Currently both filter and action flags use same "TCA_" prefix which makes
them hard to distinguish to code and confusing for users. Create aliases
for existing action flags constants with "TCA_ACT_" prefix.
Signed-off-by: Vlad Buslov <vlad@buslov.dev>
Link: https://lore.kernel.org/r/20201124164054.893168-1-vlad@buslov.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
On close this timer might be scheduled. mptcp uses sk_reset_timer for
this, so the a reference on the mptcp socket is taken.
This causes a refcount leak which can for example be reproduced
with 'mp_join_server_v4.pkt' from the mptcp-packetdrill repo.
The leak has nothing to do with join requests, v1_mp_capable_bind_no_cs.pkt
works too when replacing the last ack mpcapable to v1 instead of v0.
unreferenced object 0xffff888109bba040 (size 2744):
comm "packetdrill", [..]
backtrace:
[..] sk_prot_alloc.isra.0+0x2b/0xc0
[..] sk_clone_lock+0x2f/0x740
[..] mptcp_sk_clone+0x33/0x1a0
[..] subflow_syn_recv_sock+0x2b1/0x690 [..]
Fixes: e16163b6e2 ("mptcp: refactor shutdown and close")
Cc: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/20201124162446.11448-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
After cited commit, gro_cells_destroy() became damn slow
on hosts with a lot of cores.
This is because we have one additional synchronize_net() per cpu as
stated in the changelog.
gro_cells_init() is setting NAPI_STATE_NO_BUSY_POLL, and this was enough
to not have one synchronize_net() call per netif_napi_del()
We can factorize all the synchronize_net() to a single one,
right before freeing per-cpu memory.
Fixes: 5198d545db ("net: remove napi_hash_del() from driver-facing API")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20201124203822.1360107-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- set module owner to THIS_MODULE, by Taehee Yoo
-----BEGIN PGP SIGNATURE-----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=Qr0B
-----END PGP SIGNATURE-----
Merge tag 'batadv-net-pullrequest-20201124' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
Here is a batman-adv bugfix:
- set module owner to THIS_MODULE, by Taehee Yoo
* tag 'batadv-net-pullrequest-20201124' of git://git.open-mesh.org/linux-merge:
batman-adv: set .owner to THIS_MODULE
====================
Link: https://lore.kernel.org/r/20201124134417.17269-1-sw@simonwunderlich.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When a BPF program is used to select between a type of TCP congestion
control algorithm that uses either ECN or not there is a case where the
synack for the frame was coming up without the ECT0 bit set. A bit of
research found that this was due to the final socket being configured to
dctcp while the listener socket was staying in cubic.
To reproduce it all that is needed is to monitor TCP traffic while running
the sample bpf program "samples/bpf/tcp_cong_kern.c". What is observed,
assuming tcp_dctcp module is loaded or compiled in and the traffic matches
the rules in the sample file, is that for all frames with the exception of
the synack the ECT0 bit is set.
To address that it is necessary to make one additional call to
tcp_bpf_ca_needs_ecn using the request socket and then use the output of
that to set the ECT0 bit for the tos/tclass of the packet.
Fixes: 91b5b21c7c ("bpf: Add support for changing congestion control")
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Link: https://lore.kernel.org/r/160593039663.2604.1374502006916871573.stgit@localhost.localdomain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In bug report [0] a warning in r8169 driver was reported that was
caused by an invalid GSO SKB (gso_type was 0). See [1] for a discussion
about this issue. Still the origin of the invalid GSO SKB isn't clear.
It shouldn't be a network drivers task to check for invalid GSO SKB's.
Also, even if issue [0] can be fixed, we can't be sure that a
similar issue doesn't pop up again at another place.
Therefore let gso_features_check() check for such invalid GSO SKB's.
[0] https://bugzilla.kernel.org/show_bug.cgi?id=209423
[1] https://www.spinics.net/lists/netdev/msg690794.html
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/97c78d21-7f0b-d843-df17-3589f224d2cf@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 642e450b6b ("xsk: Do not discard packet when NETDEV_TX_BUSY")
addressed the problem that packets were discarded from the Tx AF_XDP
ring, when the driver returned NETDEV_TX_BUSY. Part of the fix was
bumping the skbuff reference count, so that the buffer would not be
freed by dev_direct_xmit(). A reference count larger than one means
that the skbuff is "shared", which is not the case.
If the "shared" skbuff is sent to the generic XDP receive path,
netif_receive_generic_xdp(), and pskb_expand_head() is entered the
BUG_ON(skb_shared(skb)) will trigger.
This patch adds a variant to dev_direct_xmit(), __dev_direct_xmit(),
where a user can select the skbuff free policy. This allows AF_XDP to
avoid bumping the reference count, but still keep the NETDEV_TX_BUSY
behavior.
Fixes: 642e450b6b ("xsk: Do not discard packet when NETDEV_TX_BUSY")
Reported-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20201123175600.146255-1-bjorn.topel@gmail.com
Fix reload stats structure exposed to the user. Change stats structure
hierarchy to have the reload action as a parent of the stat entry and
then stat entry includes value per limit. This will also help to avoid
string concatenation on iproute2 output.
Reload stats structure before this fix:
"stats": {
"reload": {
"driver_reinit": 2,
"fw_activate": 1,
"fw_activate_no_reset": 0
}
}
After this fix:
"stats": {
"reload": {
"driver_reinit": {
"unspecified": 2
},
"fw_activate": {
"unspecified": 1,
"no_reset": 0
}
}
Fixes: a254c26426 ("devlink: Add reload stats")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/1606109785-25197-1-git-send-email-moshe@mellanox.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a packet trap to report packets that were dropped due to a
blackhole nexthop.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQIzBAABCAAdFiEEqG5UsNXhtOCrfGQP+7dXa6fLC2sFAl+8E4YACgkQ+7dXa6fL
C2tehQ/8C1O+p1UBmQ4k/eXkYqsIvRQJGXGheSClxvym8tQiut/sZEKsCqucFmO8
Y2gKEYJB3xYIqbZjjJUFYbL70Q5qG/cXgKn3rCpMjhn/0UAoUSwaGyoURcLwaz2B
asipDSvbvZk7OwX4ScUTi/b/7AHtO6l16Y6yRzUqneOsSkXYk1+HhK2/4rPDKEJf
cxocGIjjWs4d1erG2Aqgn3BZ2GsDNb88NJYi5qgc0ywFgRacX7oL0WFeu6pD1Ja+
8vZLjFYB/bDeLBlvzpnWal99lUiSee8BbUoQn1iGJ3EekUVWkkNNfjhpYRjzIIR5
GsJfbDHP16PHhLZgxBvNBwkWoqqBw3X/Zn0dkBDZgjlZQvLbeds6QRd6Ag/M2CJI
D1QtmBDBtr4UZfRFm+5hfpTqf2jeOc4o68WROH3FEdsnKvICkttKucE9LaykokFD
gQLNmkn2tb1D1yS2Y4iPucV3kYUU1Y6yw++Ck0cE2isBauN0gHtr9UAXZEc57ILc
hXCFrJTbGkph3TimQDd1QbXZ28eExRBnn+H5RyYHeEidv03d2UO5uFZaJ5b5UGX0
sE+3aeWLTH3fFTBvMnYPyFjzalSky8V5zOlUltwVCx7PpiDe6P7rKpO+ZXEi4OXP
mHz7HM6h1iEnnrqEGNz7L39pTqKVbfBxDMvFra07dyKkvVthF1w=
=TvbK
-----END PGP SIGNATURE-----
Merge tag 'rxrpc-next-20201123' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Prelude to gssapi support
Here are some patches that do some reorganisation of the security class
handling in rxrpc to allow implementation of the RxGK security class that
will allow AF_RXRPC to use GSSAPI-negotiated tokens and better crypto. The
RxGK security class is not included in this patchset.
It does the following things:
(1) Add a keyrings patch to provide the original key description, as
provided to add_key(), to the payload preparser so that it can
interpret the content on that basis. Unfortunately, the rxrpc_s key
type wasn't written to interpret its payload as anything other than a
string of bytes comprising a key, but for RxGK, more information is
required as multiple Kerberos enctypes are supported.
(2) Remove the rxk5 security class key parsing. The rxk5 class never got
rolled out in OpenAFS and got replaced with rxgk.
(3) Support the creation of rxrpc keys with multiple tokens of different
types. If some types are not supported, the ENOPKG error is
suppressed if at least one other token's type is supported.
(4) Punt the handling of server keys (rxrpc_s type) to the appropriate
security class.
(5) Organise the security bits in the rxrpc_connection struct into a
union to make it easier to override for other classes.
(6) Move some bits from core code into rxkad that won't be appropriate to
rxgk.
* tag 'rxrpc-next-20201123' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
rxrpc: Ask the security class how much space to allow in a packet
rxrpc: rxkad: Don't use pskb_pull() to advance through the response packet
rxrpc: Organise connection security to use a union
rxrpc: Don't reserve security header in Tx DATA skbuff
rxrpc: Merge prime_packet_security into init_connection_security
rxrpc: Fix example key name in a comment
rxrpc: Ignore unknown tokens in key payload unless no known tokens
rxrpc: Make the parsing of xdr payloads more coherent
rxrpc: Allow security classes to give more info on server keys
rxrpc: Don't leak the service-side session key to userspace
rxrpc: Hand server key parsing off to the security class
rxrpc: Split the server key type (rxrpc_s) into its own file
rxrpc: Don't retain the server key in the connection
rxrpc: Support keys with multiple authentication tokens
rxrpc: List the held token types in the key description in /proc/keys
rxrpc: Remove the rxk5 security class as it's now defunct
keys: Provide the original description to the key preparser
====================
Link: https://lore.kernel.org/r/160616220405.830164.2239716599743995145.stgit@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Get rid of the __call_single_node union and cleanup the API a little
to avoid external code relying on the structure layout as much.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
In the patchset merged by commit b9fcf0a0d8
("Merge branch 'support-AF_PACKET-for-layer-3-devices'") L3 devices which
did not have header_ops were given one for the purpose of protocol parsing
on af_packet transmit path.
That change made af_packet receive path regard these devices as having a
visible L3 header and therefore aligned incoming skb->data to point to the
skb's mac_header. Some devices, such as ipip, xfrmi, and others, do not
reset their mac_header prior to ingress and therefore their incoming
packets became malformed.
Ideally these devices would reset their mac headers, or af_packet would be
able to rely on dev->hard_header_len being 0 for such cases, but it seems
this is not the case.
Fix by changing af_packet RX ll visibility criteria to include the
existence of a '.create()' header operation, which is used when creating
a device hard header - via dev_hard_header() - by upper layers, and does
not exist in these L3 devices.
As this predicate may be useful in other situations, add it as a common
dev_has_header() helper in netdevice.h.
Fixes: b9fcf0a0d8 ("Merge branch 'support-AF_PACKET-for-layer-3-devices'")
Signed-off-by: Eyal Birger <eyal.birger@gmail.com>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20201121062817.3178900-1-eyal.birger@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
linux/netdevice.h is included in very many places, touching any
of its dependecies causes large incremental builds.
Drop the linux/ethtool.h include, linux/netdevice.h just needs
a forward declaration of struct ethtool_ops.
Fix all the places which made use of this implicit include.
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Link: https://lore.kernel.org/r/20201120225052.1427503-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Remove unused and add needed includes. No functional change.
Suggested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Starting from commit 8692cefc43 ("virtio_vsock: Fix race condition
in virtio_transport_recv_pkt"), we discard packets in
virtio_transport_recv_pkt() if the socket has been released.
When the socket is connected, we schedule a delayed work to wait the
RST packet from the other peer, also if SHUTDOWN_MASK is set in
sk->sk_shutdown.
This is done to complete the virtio-vsock shutdown algorithm, releasing
the port assigned to the socket definitively only when the other peer
has consumed all the packets.
If we discard the RST packet received, the socket will be closed only
when the VSOCK_CLOSE_TIMEOUT is reached.
Sergio discovered the issue while running ab(1) HTTP benchmark using
libkrun [1] and observing a latency increase with that commit.
To avoid this issue, we discard packet only if the socket is really
closed (SOCK_DONE flag is set).
We also set SOCK_DONE in virtio_transport_release() when we don't need
to wait any packets from the other peer (we didn't schedule the delayed
work). In this case we remove the socket from the vsock lists, releasing
the port assigned.
[1] https://github.com/containers/libkrun
Fixes: 8692cefc43 ("virtio_vsock: Fix race condition in virtio_transport_recv_pkt")
Cc: justin.he@arm.com
Reported-by: Sergio Lopez <slp@redhat.com>
Tested-by: Sergio Lopez <slp@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Jia He <justin.he@arm.com>
Link: https://lore.kernel.org/r/20201120104736.73749-1-sgarzare@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When the TCP stack is in SYN flood mode, the server child socket is
created from the SYN cookie received in a TCP packet with the ACK flag
set.
The child socket is created when the server receives the first TCP
packet with a valid SYN cookie from the client. Usually, this packet
corresponds to the final step of the TCP 3-way handshake, the ACK
packet. But is also possible to receive a valid SYN cookie from the
first TCP data packet sent by the client, and thus create a child socket
from that SYN cookie.
Since a client socket is ready to send data as soon as it receives the
SYN+ACK packet from the server, the client can send the ACK packet (sent
by the TCP stack code), and the first data packet (sent by the userspace
program) almost at the same time, and thus the server will equally
receive the two TCP packets with valid SYN cookies almost at the same
instant.
When such event happens, the TCP stack code has a race condition that
occurs between the momement a lookup is done to the established
connections hashtable to check for the existence of a connection for the
same client, and the moment that the child socket is added to the
established connections hashtable. As a consequence, this race condition
can lead to a situation where we add two child sockets to the
established connections hashtable and deliver two sockets to the
userspace program to the same client.
This patch fixes the race condition by checking if an existing child
socket exists for the same client when we are adding the second child
socket to the established connections socket. If an existing child
socket exists, we drop the packet and discard the second child socket
to the same client.
Signed-off-by: Ricardo Dias <rdias@singlestore.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20201120111133.GA67501@rdias-suse-pc.lan
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As pointed out by Herbert in a recent related patch, the LSM hooks do
not have the necessary address family information to use the flowi
struct safely. As none of the LSMs currently use any of the protocol
specific flowi information, replace the flowi pointers with pointers
to the address family independent flowi_common struct.
Reported-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: James Morris <jamorris@linux.microsoft.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
-----BEGIN PGP SIGNATURE-----
iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAl+69egeHHRvcnZhbGRz
QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGTSYH/ifRBlaxy5UiHFc0
2zdR7pkjWrYfDTTT3sazIAhdlzzcfnkUqgFxOP45F4ZIqeTzunH3sUY+5UlT9IX7
liUgnLxQ/1R9Gx8kPGQfu+tLCey78xVFydGsqJoW9sPRw2R+apMdGGa/lOrk+OXz
DXIN+dDnGFqwCCNJpK+rxQQhFf++IPpSI8z6Y23moOFhsDZrEziHuVFy2FGyRM6z
prZ/us/tcobE8ptCk1RmOxLoJ1DR6UxpA2vLimTE+JD8siOsSWPbjE0KudnWCnd5
BLqIjrsPJbSxyuzzK3v9dnO5wMv7tMDuMIuYM/MQTXDttNwtsqt/aP6gdnUCym7N
5eHEj5g=
=MuO1
-----END PGP SIGNATURE-----
Merge tag 'v5.10-rc5' into rdma.git for-next
For dependencies in following patches
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Ask the security class how much header and trailer space to allow for when
allocating a packet, given how much data is remaining.
This will allow the rxgk security class to stick both a trailer in as well
as a header as appropriate in the future.
Signed-off-by: David Howells <dhowells@redhat.com>
In the rxkad security class, don't use pskb_pull() to advance through the
contents of the response packet. There's no point, especially as the next
and last access to the skbuff still has to allow for the wire header in the
offset (which we didn't advance over).
Better to just add the displacement to the next offset.
Signed-off-by: David Howells <dhowells@redhat.com>
Organise the security information in the rxrpc_connection struct to use a
union to allow for different data for different security classes.
Signed-off-by: David Howells <dhowells@redhat.com>
Insert the security header into the skbuff representing a DATA packet to be
transmitted rather than using skb_reserve() when the packet is allocated.
This makes it easier to apply crypto that spans the security header and the
data, particularly in the upcoming RxGK class where we have a common
encrypt-and-checksum function that is used in a number of circumstances.
Signed-off-by: David Howells <dhowells@redhat.com>
Merge the ->prime_packet_security() into the ->init_connection_security()
hook as they're always called together.
Signed-off-by: David Howells <dhowells@redhat.com>
When parsing a payload for an rxrpc-type key, ignore any tokens that are
not of a known type and don't give an error for them - unless there are no
tokens of a known type.
Signed-off-by: David Howells <dhowells@redhat.com>
Make the parsing of xdr-encoded payloads, as passed to add_key, more
coherent. Shuttling back and forth between various variables was a bit
hard to follow.
Signed-off-by: David Howells <dhowells@redhat.com>
Allow a security class to give more information on an rxrpc_s-type key when
it is viewed in /proc/keys. This will allow the upcoming RxGK security
class to show the enctype name here.
Signed-off-by: David Howells <dhowells@redhat.com>
Don't let someone reading a service-side rxrpc-type key get access to the
session key that was exchanged with the client. The server application
will, at some point, need to be able to read the information in the ticket,
but this probably shouldn't include the key material.
Signed-off-by: David Howells <dhowells@redhat.com>
Hand responsibility for parsing a server key off to the security class. We
can determine which class from the description. This is necessary as rxgk
server keys have different lookup requirements and different content
requirements (dependent on crypto type) to those of rxkad server keys.
Signed-off-by: David Howells <dhowells@redhat.com>
Split the server private key type (rxrpc_s) out into its own file rather
than mingling it with the authentication/client key type (rxrpc) since they
don't really bear any relation.
Signed-off-by: David Howells <dhowells@redhat.com>
Don't retain a pointer to the server key in the connection, but rather get
it on demand when the server has to deal with a response packet.
This is necessary to implement RxGK (GSSAPI-mediated transport class),
where we can't know which key we'll need until we've challenged the client
and got back the response.
This also means that we don't need to do a key search in the accept path in
softirq mode.
Also, whilst we're at it, allow the security class to ask for a kvno and
encoding-type variant of a server key as RxGK needs different keys for
different encoding types. Keys of this type have an extra bit in the
description:
"<service-id>:<security-index>:<kvno>:<enctype>"
Signed-off-by: David Howells <dhowells@redhat.com>
rxrpc-type keys can have multiple tokens attached for different security
classes. Currently, rxrpc always picks the first one, whether or not the
security class it indicates is supported.
Add preliminary support for choosing which security class will be used
(this will need to be directed from a higher layer) and go through the
tokens to find one that's supported.
Signed-off-by: David Howells <dhowells@redhat.com>
No functional changes in this patch, needed to provide io_uring support
for shutdown(2).
Cc: netdev@vger.kernel.org
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Fix incorrect netdev reference count in xsk_bind operation. Incorrect
reference count of the device appears when a user calls bind with the
XDP_ZEROCOPY flag on an interface which does not support zero-copy.
In such a case, an error is returned but the reference count is not
decreased. This change fixes the fault, by decreasing the reference count
in case of such an error.
The problem being corrected appeared in '162c820ed896' for the first time,
and the code was moved to new file location over the time with commit
'c2d3d6a47462'. This specific patch applies to all version starting
from 'c2d3d6a47462'. The same solution should be applied but on different
file (net/xdp/xdp_umem.c) and function (xdp_umem_assign_dev) for versions
from '162c820ed896' to 'c2d3d6a47462' excluded.
Fixes: 162c820ed8 ("xdp: hold device for umem regardless of zero-copy mode")
Signed-off-by: Marek Majtyka <marekx.majtyka@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20201120151443.105903-1-marekx.majtyka@intel.com
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAl+3q+gTHG1rbEBwZW5n
dXRyb25peC5kZQAKCRCpyVqK+u3vqYdjB/46Qv583QBIbM8YaXN+XTSfxSufp0Ku
G0R88mJKdOalgeiD58TaZ3hAegjOW44nCMmZP64mQB7XNvRiyNk8j69VDsRy+4Zy
r86Hi0TIlpeM5oNHb84SpvIO01elmuYNlaoU9t7NQV5YlKA2Lq+kcmMLGa7Z1zVk
IZ2KF2eF2V83p/4A5t1cgQV6LRlDBgAeoe/9pyG0mNX3Fv8lI3WIqjRkuevSm6iJ
XMEuc7kjUZ8Yd59Vvnipm89teD5lCyIpxeJ2hrOsiUlkwyosdCxewMeohJ596a2L
t5DoiT+3nJLOBQ/IKCYe5RoCf7sFZ8nfjqcNYeOm7Yw1CbXg9KwGZTU7
=BedD
-----END PGP SIGNATURE-----
Merge tag 'linux-can-next-for-5.11-20201120' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2020-11-20
The first patch is by Yegor Yefremov and he improves the j1939 documentaton by
adding tables for the CAN identifier and its fields.
Then there are 8 patches by Oliver Hartkopp targeting the CAN driver
infrastructure and drivers. These add support for optional DLC element to the
Classical CAN frame structure. See patch ea7800565a ("can: add optional DLC
element to Classical CAN frame structure") for details. Oliver's last patch
adds len8_dlc support to several drivers. Stefan Mätje provides a patch to add
len8_dlc support to the esd_usb2 driver.
The next patch is by Oliver Hartkopp, too and adds support for modification of
Classical CAN DLCs to CAN GW sockets.
The next 3 patches target the nxp,flexcan DT bindings. One patch by my adds the
missing uint32 reference to the clock-frequency property. Joakim Zhang's
patches fix the fsl,clk-source property and add the IMX_SC_R_CAN() macro to the
imx firmware header file, which will be used in the flexcan driver later.
Another patch by Joakim Zhang prepares the flexcan driver for SCU based
stop-mode, by giving the existing, GPR based stop-mode, a _GPR postfix.
The next 5 patches are by me, target the flexcan driver, and clean up the
.ndo_open and .ndo_stop callbacks. These patches try to fix a sporadically
hanging flexcan_close() during simultanious ifdown, sending of CAN messages and
probably open CAN bus. I was never able to reproduce, but these seem to fix the
problem at the reporting user. As these changes are rather big, I'd like to
mainline them via net-next/master.
The next patches are by Jimmy Assarsson and Christer Beskow, they add support
for new USB devices to the existing kvaser_usb driver.
The last patch is by Kaixu Xia and simplifies the return in the
mcp251xfd_chip_softreset() function in the mcp251xfd driver.
* tag 'linux-can-next-for-5.11-20201120' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next: (25 commits)
can: mcp251xfd: remove useless code in mcp251xfd_chip_softreset
can: kvaser_usb: Add new Kvaser hydra devices
can: kvaser_usb: kvaser_usb_hydra: Add support for new device variant
can: kvaser_usb: Add new Kvaser Leaf v2 devices
can: kvaser_usb: Add USB_{LEAF,HYDRA}_PRODUCT_ID_END defines
can: flexcan: flexcan_close(): change order if commands to properly shut down the controller
can: flexcan: flexcan_open(): completely initialize controller before requesting IRQ
can: flexcan: flexcan_rx_offload_setup(): factor out mailbox and rx-offload setup into separate function
can: flexcan: move enabling/disabling of interrupts from flexcan_chip_{start,stop}() to callers
can: flexcan: factor out enabling and disabling of interrupts into separate function
can: flexcan: rename macro FLEXCAN_QUIRK_SETUP_STOP_MODE -> FLEXCAN_QUIRK_SETUP_STOP_MODE_GPR
dt-bindings: firmware: add IMX_SC_R_CAN(x) macro for CAN
dt-bindings: can: fsl,flexcan: fix fsl,clk-source property
dt-bindings: can: fsl,flexcan: add uint32 reference to clock-frequency property
can: gw: support modification of Classical CAN DLCs
can: drivers: add len8_dlc support for esd_usb2 CAN adapter
can: drivers: add len8_dlc support for various CAN adapters
can: drivers: introduce helpers to access Classical CAN DLC values
can: update documentation for DLC usage in Classical CAN
can: rename CAN FD related can_len2dlc and can_dlc2len helpers
...
====================
Link: https://lore.kernel.org/r/20201120133318.3428231-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Child sockets erroneously inherit their parent's sk_type (ie. SOCK_*),
instead of the PF_IUCV protocol that the parent was created with in
iucv_sock_create().
We're currently not using sk->sk_protocol ourselves, so this shouldn't
have much impact (except eg. getting the output in skb_dump() right).
Fixes: eac3731bd0 ("[S390]: Add AF_IUCV socket support")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Link: https://lore.kernel.org/r/20201120100657.34407-1-jwi@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use netdev->tstats instead of a member of net_bridge for storing
a pointer to the per-cpu counters. This allows us to use core
functionality for statistics handling.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/9bad2be2-fd84-7c6e-912f-cee433787018@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When setting congestion control via a BPF program it is seen that the
SYN/ACK for packets within a given flow will not include the ECT0 flag. A
bit of simple printk debugging shows that when this is configured without
BPF we will see the value INET_ECN_xmit value initialized in
tcp_assign_congestion_control however when we configure this via BPF the
socket is in the closed state and as such it isn't configured, and I do not
see it being initialized when we transition the socket into the listen
state. The result of this is that the ECT0 bit is configured based on
whatever the default state is for the socket.
Any easy way to reproduce this is to monitor the following with tcpdump:
tools/testing/selftests/bpf/test_progs -t bpf_tcp_ca
Without this patch the SYN/ACK will follow whatever the default is. If dctcp
all SYN/ACK packets will have the ECT0 bit set, and if it is not then ECT0
will be cleared on all SYN/ACK packets. With this patch applied the SYN/ACK
bit matches the value seen on the other packets in the given stream.
Fixes: 91b5b21c7c ("bpf: Add support for changing congestion control")
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
An issue was recently found where DCTCP SYN/ACK packets did not have the
ECT bit set in the L3 header. A bit of code review found that the recent
change referenced below had gone though and added a mask that prevented the
ECN bits from being populated in the L3 header.
This patch addresses that by rolling back the mask so that it is only
applied to the flags coming from the incoming TCP request instead of
applying it to the socket tos/tclass field. Doing this the ECT bits were
restored in the SYN/ACK packets in my testing.
One thing that is not addressed by this patch set is the fact that
tcp_reflect_tos appears to be incompatible with ECN based congestion
avoidance algorithms. At a minimum the feature should likely be documented
which it currently isn't.
Fixes: ac8f1710c1 ("tcp: reflect tos value received in SYN to the socket")
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Acked-by: Wei Wang <weiwan@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Send timely MPTCP-level ack is somewhat difficult when
the insertion into the msk receive level is performed
by the worker.
It needs TCP-level dup-ack to notify the MPTCP-level
ack_seq increase, as both the TCP-level ack seq and the
rcv window are unchanged.
We can actually avoid processing incoming data with the
worker, and let the subflow or recevmsg() send ack as needed.
When recvmsg() moves the skbs inside the msk receive queue,
the msk space is still unchanged, so tcp_cleanup_rbuf() could
end-up skipping TCP-level ack generation. Anyway, when
__mptcp_move_skbs() is invoked, a known amount of bytes is
going to be consumed soon: we update rcv wnd computation taking
them in account.
Additionally we need to explicitly trigger tcp_cleanup_rbuf()
when recvmsg() consumes a significant amount of the receive buffer.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
OoO handling attempts to detect when packet is out-of-window by testing
current ack sequence and remaining space vs. sequence number.
This doesn't work reliably. Store the highest allowed sequence number
that we've announced and use it to detect oow packets.
Do this when mptcp options get written to the packet (wire format).
For this to work we need to move the write_options call until after
stack selected a new tcp window.
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When ADD_ADDR suboption includes an IPv6 address, the size is 28 octets.
It will not fit when other MPTCP suboptions are included in this packet,
e.g. DSS. So here we send out an ADD_ADDR dedicated packet to carry only
ADD_ADDR suboption, no other MPTCP suboptions.
In mptcp_pm_announce_addr, we check whether this is an IPv6 ADD_ADDR.
If it is, we set the flag MPTCP_ADD_ADDR_IPV6 to true. Then we call
mptcp_pm_nl_add_addr_send_ack to sent out a new pure ACK packet.
In mptcp_established_options_add_addr, we check whether this is a pure
ACK packet for ADD_ADDR. If it is, we drop all other MPTCP suboptions
in this packet, only put ADD_ADDR suboption in it.
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch changed the 'add_addr_signal' type from bool to char, so that
we could encode the addr type there.
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This will simplify all operation dealing with subflows
before accept time (e.g. data fin processing, add_addr).
The join list is already flushed by mptcp_stream_accept()
before returning the newly created msk to the user space.
This also fixes an potential bug present into the old code:
conn_list was manipulated without helding the msk lock
in mptcp_stream_accept().
Tested-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In case a subflow path is blocked, MPTCP-level retransmit may not take
place anymore because such subflow is likely to have unacked data left
in its write queue.
Ignore subflows that have experienced loss and test next candidate.
Fixes: 3b1d6210a9 ("mptcp: implement and use MPTCP-level retransmission")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We need to cope with some more state transition for
fallback sockets, or could still end-up moving to TCP_CLOSE
too early and avoid spooling some pending data
Fixes: e16163b6e2 ("mptcp: refactor shutdown and close")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Only mptcp_close() can actually cancel the workqueue,
no need to add and use this flag.
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If dsa_switch_ops::port_txtstamp() returns false, clone will be freed
immediately. Shouldn't store a pointer to freed memory.
Signed-off-by: Christian Eggers <ceggers@arri.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20201119110906.25558-1-ceggers@arri.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In case when tcp socket received FIN after some data and the
parser haven't started before reading data caller will receive
an empty buffer. This behavior differs from plain TCP socket and
leads to special treating in user-space.
The flow that triggers the race is simple. Server sends small
amount of data right after the connection is configured to use TLS
and closes the connection. In this case receiver sees TLS Handshake
data, configures TLS socket right after Change Cipher Spec record.
While the configuration is in process, TCP socket receives small
Application Data record, Encrypted Alert record and FIN packet. So
the TCP socket changes sk_shutdown to RCV_SHUTDOWN and sk_flag with
SK_DONE bit set. The received data is not parsed upon arrival and is
never sent to user-space.
Patch unpauses parser directly if we have unparsed data in tcp
receive queue.
Fixes: fcf4793e27 ("tls: check RCV_SHUTDOWN in tls_wait_data")
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Link: https://lore.kernel.org/r/1605801588-12236-1-git-send-email-vfedorenko@novek.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
rose_send_frame() dereferences `neigh->dev` when called from
rose_transmit_clear_request(), and the first occurrence of the
`neigh` is in rose_loopback_timer() as `rose_loopback_neigh`,
and it is initialized in rose_add_loopback_neigh() as NULL.
i.e when `rose_loopback_neigh` used in rose_loopback_timer()
its `->dev` was still NULL and rose_loopback_timer() was calling
rose_rx_call_request() without checking for NULL.
- net/rose/rose_link.c
This bug seems to get triggered in this line:
rose_call = (ax25_address *)neigh->dev->dev_addr;
Fix it by adding NULL checking for `rose_loopback_neigh->dev`
in rose_loopback_timer().
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Reported-by: syzbot+a1c743815982d9496393@syzkaller.appspotmail.com
Tested-by: syzbot+a1c743815982d9496393@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?id=9d2a7ca8c7f2e4b682c97578dfa3f236258300b3
Signed-off-by: Anmol Karn <anmol.karan123@gmail.com>
Link: https://lore.kernel.org/r/20201119191043.28813-1-anmol.karan123@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The static checker is fooled by the non-static locking scheme
implemented by the mentioned helpers.
Let's make its life easier adding some unconditional annotation
so that the helpers are now interpreted as a plain spinlock from
sparse.
v1 -> v2:
- add __releases() annotation to unlock_sock_fast()
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/6ed7ae627d8271fb7f20e0a9c6750fbba1ac2635.1605634911.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There is no easy way to distinguish if a conntracked tcp packet is
marked invalid because of tcp_in_window() check error or because
it doesn't belong to an existing connection. With this patch,
openvswitch sets liberal tcp flag for the established sessions so
that out of window packets are not marked invalid.
A helper function - nf_ct_set_tcp_be_liberal(nf_conn) is added which
sets this flag for both the directions of the nf_conn.
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Numan Siddique <nusiddiq@redhat.com>
Acked-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20201116130126.3065077-1-nusiddiq@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fix a bug that is triggered when a partially setup socket is
destroyed. For a fully setup socket, a socket that has been bound to a
device, the cleanup of the umem is performed at the end of the buffer
pool's cleanup work queue item. This has to be performed in a work
queue, and not in RCU cleanup, as it is doing a vunmap that cannot
execute in interrupt context. However, when a socket has only been
partially set up so that a umem has been created but the buffer pool
has not, the code erroneously directly calls the umem cleanup function
instead of using a work queue, and this leads to a BUG_ON() in
vunmap().
As there in this case is no buffer pool, we cannot use its work queue,
so we need to introduce a work queue for the umem and schedule this for
the cleanup. So in the case there is no pool, we are going to use the
umem's own work queue to schedule the cleanup. But if there is a
pool, the cleanup of the umem is still being performed by the pool's
work queue, as it is important that the umem is cleaned up after the
pool.
Fixes: e5e1a4bc91 ("xsk: Fix possible memory leak at socket close")
Reported-by: Marek Majtyka <marekx.majtyka@intel.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Marek Majtyka <marekx.majtyka@intel.com>
Link: https://lore.kernel.org/bpf/1605873219-21629-1-git-send-email-magnus.karlsson@gmail.com
Add support for data length code modifications for Classical CAN.
The netlink configuration interface always allowed to pass any value
that fits into a byte, therefore only the modification process had to be
extended to handle the raw DLC represenation of Classical CAN frames.
When a DLC value from 0 .. F is provided for Classical CAN frame
modifications the 'len' value is modified as-is with the exception that
potentially existing 9 .. F DLC values in the len8_dlc element are moved
to the 'len' element for the modification operation by mod_retrieve_ccdlc().
After the modification the Classical CAN frame DLC information is brought
back into the correct format by mod_store_ccdlc() which is filling 'len'
and 'len8_dlc' accordingly.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/r/20201119084921.2621-1-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The naming of can_dlc as element of struct can_frame and also as variable
name is misleading as it claims to be a 'data length CODE' but in reality
it always was a plain data length.
With the indroduction of a new 'len' element in struct can_frame we can now
remove can_dlc as name and make clear which of the former uses was a plain
length (-> 'len') or a data length code (-> 'dlc') value.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/r/20201120100444.3199-1-socketcan@hartkopp.net
[mkl: gs_usb: keep struct gs_host_frame::can_dlc as is]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Reset MHI device channels when driver remove is called due to
module unload or any crash scenario. This will make sure that
MHI channels no longer remain enabled for transfers since the
MHI stack does not take care of this anymore after the auto-start
channels feature was removed.
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
This patch adds an IPv6 routes encapsulation attribute
to the result of netlink RTM_GETROUTE requests
(i.e. ip route get 2001:db8::).
Signed-off-by: Oliver Herms <oliver.peter.herms@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20201118230651.GA8861@tws
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We must start the retransmission timer only there are
pending data in the rtx queue.
Otherwise we can hit a WARN_ON in mptcp_reset_timer(),
as syzbot demonstrated.
Reported-and-tested-by: syzbot+42aa53dafb66a07e5a24@syzkaller.appspotmail.com
Fixes: d9ca1de8c0 ("mptcp: move page frag allocation in mptcp_sendmsg()")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Link: https://lore.kernel.org/r/1a72039f112cae048c44d398ffa14e0a1432db3d.1605737083.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When performing a flash update via devlink, device drivers may inform
user space of status updates via
devlink_flash_update_(begin|end|timeout|status)_notify functions.
It is expected that drivers do not send any status notifications unless
they send a begin and end message. If a driver sends a status
notification without sending the appropriate end notification upon
finishing (regardless of success or failure), the current implementation
of the devlink userspace program can get stuck endlessly waiting for the
end notification that will never come.
The current ice driver implementation may send such a status message
without the appropriate end notification in rare cases.
Fixing the ice driver is relatively simple: we just need to send the
begin_notify at the start of the function and always send an end_notify
no matter how the function exits.
Rather than assuming driver authors will always get this right in the
future, lets just fix the API so that it is not possible to get wrong.
Make devlink_flash_update_begin_notify and
devlink_flash_update_end_notify static, and call them in devlink.c core
code. Always send the begin_notify just before calling the driver's
flash_update routine. Always send the end_notify just after the routine
returns regardless of success or failure.
Doing this makes the status notification easier to use from the driver,
as it no longer needs to worry about catching failures and cleaning up
by calling devlink_flash_update_end_notify. It is now no longer possible
to do the wrong thing in this regard. We also save a couple of lines of
code in each driver.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
All drivers which implement the devlink flash update support, with the
exception of netdevsim, use either request_firmware or
request_firmware_direct to locate the firmware file. Rather than having
each driver do this separately as part of its .flash_update
implementation, perform the request_firmware within net/core/devlink.c
Replace the file_name parameter in the struct devlink_flash_update_params
with a pointer to the fw object.
Use request_firmware rather than request_firmware_direct. Although most
Linux distributions today do not have the fallback mechanism
implemented, only about half the drivers used the _direct request, as
compared to the generic request_firmware. In the event that
a distribution does support the fallback mechanism, the devlink flash
update ought to be able to use it to provide the firmware contents. For
distributions which do not support the fallback userspace mechanism,
there should be essentially no difference between request_firmware and
request_firmware_direct.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Shannon Nelson <snelson@pensando.io>
Acked-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently <crypto/sha.h> contains declarations for both SHA-1 and SHA-2,
and <crypto/sha3.h> contains declarations for SHA-3.
This organization is inconsistent, but more importantly SHA-1 is no
longer considered to be cryptographically secure. So to the extent
possible, SHA-1 shouldn't be grouped together with any of the other SHA
versions, and usage of it should be phased out.
Therefore, split <crypto/sha.h> into two headers <crypto/sha1.h> and
<crypto/sha2.h>, and make everyone explicitly specify whether they want
the declarations for SHA-1, SHA-2, or both.
This avoids making the SHA-1 declarations visible to files that don't
want anything to do with SHA-1. It also prepares for potentially moving
sha1.h into a new insecure/ or dangerous/ directory.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Alexei Starovoitov says:
====================
1) libbpf should not attempt to load unused subprogs, from Andrii.
2) Make strncpy_from_user() mask out bytes after NUL terminator, from Daniel.
3) Relax return code check for subprograms in the BPF verifier, from Dmitrii.
4) Fix several sockmap issues, from John.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
fail_function: Remove a redundant mutex unlock
selftest/bpf: Test bpf_probe_read_user_str() strips trailing bytes after NUL
lib/strncpy_from_user.c: Mask out bytes after NUL terminator.
libbpf: Fix VERSIONED_SYM_COUNT number parsing
bpf, sockmap: Avoid failures from skb_to_sgvec when skb has frag_list
bpf, sockmap: Handle memory acct if skb_verdict prog redirects to self
bpf, sockmap: Avoid returning unneeded EAGAIN when redirecting to self
bpf, sockmap: Use truesize with sk_rmem_schedule()
bpf, sockmap: Ensure SO_RCVBUF memory is observed on ingress redirect
bpf, sockmap: Fix partial copy_page_to_iter so progress can still be made
selftests/bpf: Fix error return code in run_getsockopt_test()
bpf: Relax return code check for subprograms
tools, bpftool: Add missing close before bpftool net attach exit
MAINTAINERS/bpf: Update Andrii's entry.
selftests/bpf: Fix unused attribute usage in subprogs_unused test
bpf: Fix unsigned 'datasec_id' compared with zero in check_pseudo_btf_id
bpf: Fix passing zero to PTR_ERR() in bpf_btf_printf_prepare
libbpf: Don't attempt to load unused subprog as an entry-point BPF program
====================
Link: https://lore.kernel.org/r/20201119200721.288-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sparse complaints 3 times about:
net/smc/smc_ib.c:203:52: warning: incorrect type in argument 1 (different address spaces)
net/smc/smc_ib.c:203:52: expected struct net_device const *dev
net/smc/smc_ib.c:203:52: got struct net_device [noderef] __rcu *const ndev
Fix that by using the existing and validated ndev variable instead of
accessing attr->ndev directly.
Fixes: 5102eca903 ("net/smc: Use rdma_read_gid_l2_fields to L2 fields")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
With the multi-subnet support of SMC-Dv2 the match for existing link
groups should not include the vlanid of the network device.
Set ini->smcd_version accordingly before the call to smc_conn_create()
and use this value in smc_conn_create() to skip the vlanid check.
Fixes: 5c21c4ccaf ("net/smc: determine accepted ISM devices")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
IPV6=m
NF_DEFRAG_IPV6=y
ld: net/ipv6/netfilter/nf_conntrack_reasm.o: in function
`nf_ct_frag6_gather':
net/ipv6/netfilter/nf_conntrack_reasm.c:462: undefined reference to
`ipv6_frag_thdr_truncated'
Netfilter is depending on ipv6 symbol ipv6_frag_thdr_truncated. This
dependency is forcing IPV6=y.
Remove this dependency by moving ipv6_frag_thdr_truncated out of ipv6. This
is the same solution as used with a similar issues: Referring to
commit 70b095c843 ("ipv6: remove dependency of nf_defrag_ipv6 on ipv6
module")
Fixes: 9d9e937b1c ("ipv6/netfilter: Discard first fragment not including all headers")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Georg Kohmann <geokohma@cisco.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Link: https://lore.kernel.org/r/20201119095833.8409-1-geokohma@cisco.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fix race issue in fid contention.
Eric's and Greg's patch offer a mechanism to fix open-unlink-f*syscall
bug in 9p. But there is race issue in fid parallel accesses.
As Greg's patch stores all of fids from opened files into according inode,
so all the lookup fid ops can retrieve fid from inode preferentially. But
there is no mechanism to handle the fid contention issue. For example,
there are two threads get the same fid in the same time and one of them
clunk the fid before the other thread ready to discard the fid. In this
scenario, it will lead to some fatal problems, even kernel core dump.
I introduce a mechanism to fix this race issue. A counter field introduced
into p9_fid struct to store the reference counter to the fid. When a fid
is allocated from the inode or dentry, the counter will increase, and
will decrease at the end of its occupation. It is guaranteed that the
fid won't be clunked before the reference counter go down to 0, then
we can avoid the clunked fid to be used.
tests:
race issue test from the old test case:
for file in {01..50}; do touch f.${file}; done
seq 1 1000 | xargs -n 1 -P 50 -I{} cat f.* > /dev/null
open-unlink-f*syscall test:
I have tested for f*syscall include: ftruncate fstat fchown fchmod faccessat.
Link: http://lkml.kernel.org/r/20200923141146.90046-5-jianyong.wu@arm.com
Fixes: 478ba09edc ("fs/9p: search open fids first")
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Struct br_vlan_stats duplicates pcpu_sw_netstats (apart from
br_vlan_stats not defining an alignment requirement), therefore
switch to using the latter one.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/04d25c3d-c5f6-3611-6d37-c2f40243dae2@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
push_scqe() uses in_interrupt() to figure out if it is allowed to sleep.
The usage of in_interrupt() in drivers is phased out and Linus clearly
requested that code which changes behaviour depending on context should
either be separated or the context be conveyed in an argument passed by the
caller, which usually knows the context.
Aside of that in_interrupt() is not correct as it does not catch preempt
disabled regions which neither can sleep.
ns_send() (the only caller of push_scqe()) has the following callers:
- vcc_sendmsg() used as proto_ops::sendmsg is expected to be invoked in
preemtible context.
-> vcc->dev->ops->send() (ns_send())
- atm_vcc::send via atmdev_ops::send either directly (pointer copied by
atm_init_aal34() or atm_init_aal5()) or via atm_send_aal0().
This is invoked by drivers (like br2684, clip, pppoatm, ...) which are
called from net_device_ops::ndo_start_xmit with BH disabled.
Add atmdev_ops::send_bh which is used by callers from BH context
(atm_send_aal*()) and if this callback missing then ::send is used
instead.
Implement this callback in nicstar and use it to replace in_interrupt().
Cc: Chas Williams <3chas3@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
DSA network devices rely on having their DSA management interface up and
running otherwise their ndo_open() will return -ENETDOWN. Without doing
this it would not be possible to use DSA devices as netconsole when
configured on the command line. These devices also do not utilize the
upper/lower linking so the check about the netpoll device having upper
is not going to be a problem.
The solution adopted here is identical to the one done for
net/ipv4/ipconfig.c with 728c02089a ("net: ipv4: handle DSA enabled
master network devices"), with the network namespace scope being
restricted to that of the process configuring netpoll.
Fixes: 04ff53f96a ("net: dsa: Add netconsole support")
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20201117035236.22658-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1605581105-35295-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Start MHI device channels so that transfers can be performed.
The MHI stack does not auto-start channels anymore.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Checking for ifdef CONFIG_x fails if CONFIG_x=m.
Use IS_ENABLED instead, which is true for both built-ins and modules.
Otherwise, a
> ip -4 route add 1.2.3.4/32 via inet6 fe80::2 dev eth1
fails with the message "Error: IPv6 support not enabled in kernel." if
CONFIG_IPV6 is `m`.
In the spirit of b8127113d0.
Fixes: d15662682d ("ipv4: Allow ipv6 gateway with ipv4 routes")
Cc: Kim Phillips <kim.phillips@arm.com>
Signed-off-by: Florian Klink <flokli@flokli.de>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20201115224509.2020651-1-flokli@flokli.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
nlmsg_cancel() needs to be called in the error path of
inet_req_diag_fill to cancel the message.
Fixes: d545caca82 ("net: inet: diag: expose the socket mark to privileged processes.")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Link: https://lore.kernel.org/r/20201116082018.16496-1-wanghai38@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When skb has a frag_list its possible for skb_to_sgvec() to fail. This
happens when the scatterlist has fewer elements to store pages than would
be needed for the initial skb plus any of its frags.
This case appears rare, but is possible when running an RX parser/verdict
programs exposed to the internet. Currently, when this happens we throw
an error, break the pipe, and kfree the msg. This effectively breaks the
application or forces it to do a retry.
Lets catch this case and handle it by doing an skb_linearize() on any
skb we receive with frags. At this point skb_to_sgvec should not fail
because the failing conditions would require frags to be in place.
Fixes: 604326b41a ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/160556576837.73229.14800682790808797635.stgit@john-XPS-13-9370
If the skb_verdict_prog redirects an skb knowingly to itself, fix your
BPF program this is not optimal and an abuse of the API please use
SK_PASS. That said there may be cases, such as socket load balancing,
where picking the socket is hashed based or otherwise picks the same
socket it was received on in some rare cases. If this happens we don't
want to confuse userspace giving them an EAGAIN error if we can avoid
it.
To avoid double accounting in these cases. At the moment even if the
skb has already been charged against the sockets rcvbuf and forward
alloc we check it again and do set_owner_r() causing it to be orphaned
and recharged. For one this is useless work, but more importantly we
can have a case where the skb could be put on the ingress queue, but
because we are under memory pressure we return EAGAIN. The trouble
here is the skb has already been accounted for so any rcvbuf checks
include the memory associated with the packet already. This rolls
up and can result in unnecessary EAGAIN errors in userspace read()
calls.
Fix by doing an unlikely check and skipping checks if skb->sk == sk.
Fixes: 51199405f9 ("bpf: skb_verdict, support SK_PASS on RX BPF path")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/160556574804.73229.11328201020039674147.stgit@john-XPS-13-9370
If a socket redirects to itself and it is under memory pressure it is
possible to get a socket stuck so that recv() returns EAGAIN and the
socket can not advance for some time. This happens because when
redirecting a skb to the same socket we received the skb on we first
check if it is OK to enqueue the skb on the receiving socket by checking
memory limits. But, if the skb is itself the object holding the memory
needed to enqueue the skb we will keep retrying from kernel side
and always fail with EAGAIN. Then userspace will get a recv() EAGAIN
error if there are no skbs in the psock ingress queue. This will continue
until either some skbs get kfree'd causing the memory pressure to
reduce far enough that we can enqueue the pending packet or the
socket is destroyed. In some cases its possible to get a socket
stuck for a noticeable amount of time if the socket is only receiving
skbs from sk_skb verdict programs. To reproduce I make the socket
memory limits ridiculously low so sockets are always under memory
pressure. More often though if under memory pressure it looks like
a spurious EAGAIN error on user space side causing userspace to retry
and typically enough has moved on the memory side that it works.
To fix skip memory checks and skb_orphan if receiving on the same
sock as already assigned.
For SK_PASS cases this is easy, its always the same socket so we
can just omit the orphan/set_owner pair.
For backlog cases we need to check skb->sk and decide if the orphan
and set_owner pair are needed.
Fixes: 51199405f9 ("bpf: skb_verdict, support SK_PASS on RX BPF path")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/160556572660.73229.12566203819812939627.stgit@john-XPS-13-9370
We use skb->size with sk_rmem_scheduled() which is not correct. Instead
use truesize to align with socket and tcp stack usage of sk_rmem_schedule.
Suggested-by: Daniel Borkman <daniel@iogearbox.net>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/160556570616.73229.17003722112077507863.stgit@john-XPS-13-9370
Fix sockmap sk_skb programs so that they observe sk_rcvbuf limits. This
allows users to tune SO_RCVBUF and sockmap will honor them.
We can refactor the if(charge) case out in later patches. But, keep this
fix to the point.
Fixes: 51199405f9 ("bpf: skb_verdict, support SK_PASS on RX BPF path")
Suggested-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/160556568657.73229.8404601585878439060.stgit@john-XPS-13-9370
If copy_page_to_iter() fails or even partially completes, but with fewer
bytes copied than expected we currently reset sg.start and return EFAULT.
This proves problematic if we already copied data into the user buffer
before we return an error. Because we leave the copied data in the user
buffer and fail to unwind the scatterlist so kernel side believes data
has been copied and user side believes data has _not_ been received.
Expected behavior should be to return number of bytes copied and then
on the next read we need to return the error assuming its still there. This
can happen if we have a copy length spanning multiple scatterlist elements
and one or more complete before the error is hit.
The error is rare enough though that my normal testing with server side
programs, such as nginx, httpd, envoy, etc., I have never seen this. The
only reliable way to reproduce that I've found is to stream movies over
my browser for a day or so and wait for it to hang. Not very scientific,
but with a few extra WARN_ON()s in the code the bug was obvious.
When we review the errors from copy_page_to_iter() it seems we are hitting
a page fault from copy_page_to_iter_iovec() where the code checks
fault_in_pages_writeable(buf, copy) where buf is the user buffer. It
also seems typical server applications don't hit this case.
The other way to try and reproduce this is run the sockmap selftest tool
test_sockmap with data verification enabled, but it doesn't reproduce the
fault. Perhaps we can trigger this case artificially somehow from the
test tools. I haven't sorted out a way to do that yet though.
Fixes: 604326b41a ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/160556566659.73229.15694973114605301063.stgit@john-XPS-13-9370
In async_resync mode, we log the TCP seq of records until the async request
is completed. Later, in case one of the logged seqs matches the resync
request, we return it, together with its record serial number. Before this
fix, we mistakenly returned the serial number of the current record
instead.
Fixes: ed9b7646b0 ("net/tls: Add asynchronous resync")
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Boris Pismenny <borisp@nvidia.com>
Link: https://lore.kernel.org/r/20201115131448.2702-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Some identifiers have different names between their prototypes
and the kernel-doc markup.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The DLCI driver (dlci.c) implements the Frame Relay protocol. However,
we already have another newer and better implementation of Frame Relay
provided by the HDLC_FR driver (hdlc_fr.c).
The DLCI driver's implementation of Frame Relay is used by only one
hardware driver in the kernel - the SDLA driver (sdla.c).
The SDLA driver provides Frame Relay support for the Sangoma S50x devices.
However, the vendor provides their own driver (along with their own
multi-WAN-protocol implementations including Frame Relay), called WANPIPE.
I believe most users of the hardware would use the vendor-provided WANPIPE
driver instead.
(The WANPIPE driver was even once in the kernel, but was deleted in
commit 8db60bcf30 ("[WAN]: Remove broken and unmaintained Sangoma
drivers.") because the vendor no longer updated the in-kernel WANPIPE
driver.)
Cc: Mike McLagan <mike.mclagan@linux.org>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Link: https://lore.kernel.org/r/20201114150921.685594-1-xie.he.0141@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Introduce batched descriptor interfaces in the xsk core code for the
Tx path to be used in the driver to write a code path with higher
performance. This interface will be used by the i40e driver in the
next patch. Though other drivers would likely benefit from this new
interface too.
Note that batching is only implemented for the common case when
there is only one socket bound to the same device and queue id. When
this is not the case, we fall back to the old non-batched version of
the function.
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/1605525167-14450-5-git-send-email-magnus.karlsson@gmail.com
Introduce one cache line worth of padding between the consumer pointer
and the flags field as well as between the flags field and the start
of the descriptors in all the lockless rings. This so that the x86 HW
adjacency prefetcher will not prefetch the adjacent pointer/field when
only one pointer/field is going to be used. This improves throughput
performance for the l2fwd sample app with 1% on my machine with HW
prefetching turned on in the BIOS.
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/1605525167-14450-4-git-send-email-magnus.karlsson@gmail.com
RDMA ULPs should only perform DMA through the ib_dma_* API instead of
using the hidden dma_device directly. In addition using the dma coherent
API family that dmapool is a part of can be very ineffcient on plaforms
that are not DMA coherent. Switch to use slab allocations and the
ib_dma_* APIs instead.
Link: https://lore.kernel.org/r/20201106181941.1878556-6-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
During loss recovery, retransmitted packets are forced to use TCP
timestamps to calculate the RTT samples, which have a millisecond
granularity. BBR is designed using a microsecond granularity. As a
result, multiple RTT samples could be truncated to the same RTT value
during loss recovery. This is problematic, as BBR will not enter
PROBE_RTT if the RTT sample is <= the current min_rtt sample, meaning
that if there are persistent losses, PROBE_RTT will constantly be
pushed off and potentially never re-entered. This patch makes sure
that BBR enters PROBE_RTT by checking if RTT sample is < the current
min_rtt sample, rather than <=.
The Netflix transport/TCP team discovered this bug in the Linux TCP
BBR code during lab tests.
Fixes: 0f8782ea14 ("tcp_bbr: add BBR congestion control")
Signed-off-by: Ryan Sharpelletti <sharpelletti@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Link: https://lore.kernel.org/r/20201116174412.1433277-1-sharpelletti.kdev@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use a consistent style of one-line/multi-line comments throughout the
file.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Ethertype DSA encodes exactly the same information in the DSA tag as
the non-ethertype variety. So refactor out the common parts and reuse
them for both protocols.
This is ensures tag parsing and generation is always consistent across
all mv88e6xxx chips.
While we are at it, explicitly deal with all possible CPU codes on
receive, making sure to set offload_fwd_mark as appropriate.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When receiving an IGMP/MLD frame with a TO_CPU tag, the switch has not
performed any forwarding of it. This means that we should not set the
offload_fwd_mark on the skb, in case a software bridge wants it
forwarded.
This is a port of:
1ed9ec9b08 ("dsa: Allow forwarding of redirected IGMP traffic")
Which corrected the issue for chips using EDSA tags, but not for those
using regular DSA tags.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If tcp socket has more data than Encrypted Handshake Message then
tls_sw_recvmsg will try to decrypt next record instead of returning
full control message to userspace as mentioned in comment. The next
message - usually Application Data - gets corrupted because it uses
zero copy for decryption that's why the data is not stored in skb
for next iteration. Revert check to not decrypt next record if
current is not Application Data.
Fixes: 692d7b5d1f ("tls: Fix recvmsg() to be able to peek across multiple records")
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Link: https://lore.kernel.org/r/1605413760-21153-1-git-send-email-vfedorenko@novek.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The intention of the current check is to avoid using bpf_sk_storage
in irq and nmi. Jakub pointed out that the current check cannot
do that. For example, in_serving_softirq() returns true
if the softirq handling is interrupted by hard irq.
Fixes: 8e4597c627 ("bpf: Allow using bpf_sk_storage in FENTRY/FEXIT/RAW_TP")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201116200113.2868539-1-kafai@fb.com
In br_forward.c and br_input.c fields dev->stats.tx_dropped and
dev->stats.multicast are populated, but they are ignored in
ndo_get_stats64.
Fixes: 28172739f0 ("net: fix 64 bit counters on 32 bit arches")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/58ea9963-77ad-a7cf-8dfd-fc95ab95f606@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When the worker moves some bytes from the OoO queue into
the receive queue, the msk->ask_seq is updated, the MPTCP-level
ack carrying that value needs to wait the next ingress packet,
possibly slowing down or hanging the peer
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Before sending 'x' new bytes also check that the new snd_una would
be within the permitted receive window.
For every ACK that also contains a DSS ack, check whether its tcp-level
receive window would advance the current mptcp window right edge and
update it if so.
Signed-off-by: Florian Westphal <fw@strlen.de>
Co-developed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
MPTCP maintains a status bit, MPTCP_SEND_SPACE, that is set when at
least one subflow and the mptcp socket itself are writeable.
mptcp_poll returns EPOLLOUT if the bit is set.
mptcp_sendmsg makes sure MPTCP_SEND_SPACE gets cleared when last write
has used up all subflows or the mptcp socket wmem.
This reworks nospace handling as follows:
MPTCP_SEND_SPACE is replaced with MPTCP_NOSPACE, i.e. inverted meaning.
This bit is set when the mptcp socket is not writeable.
The mptcp-level ack path schedule will then schedule the mptcp worker
to allow it to free already-acked data (and reduce wmem usage).
This will then wake userspace processes that wait for a POLLOUT event.
sendmsg will set MPTCP_NOSPACE only when it has to wait for more
wmem (blocking I/O case).
poll path will set MPTCP_NOSPACE in case the mptcp socket is
not writeable.
Normal tcp-level notification (SOCK_NOSPACE) is only enabled
in case the subflow socket has no available wmem.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
After the previous patch we may end-up with unsent data
in the write buffer. If such buffer is full, the writer
will block for unlimited time.
We need to trigger the MPTCP xmit path even for the
subflow rx path, on MPTCP snd_una updates.
Keep things simple and just schedule the work queue if
needed.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
mptcp_sendmsg() is refactored so that first it copies
the data provided from user space into the send queue,
and then tries to spool the send queue via sendmsg_frag.
There a subtle change in the mptcp level collapsing on
consecutive data fragment: we now allow that only on unsent
data.
The latter don't need to deal with msghdr data anymore
and can be simplified in a relevant way.
snd_nxt and write_seq are now tracked independently.
Overall this allows some relevant cleanup and will
allow sending pending mptcp data on msk una update in
later patch.
Co-developed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We must not close the subflows before all the MPTCP level
data, comprising the DATA_FIN has been acked at the MPTCP
level, otherwise we could be unable to retransmit as needed.
__mptcp_wr_shutdown() shutdown is responsible to check for the
correct status and close all subflows. Is called by the output
path after spooling any data and at shutdown/close time.
In a similar way, __mptcp_destroy_sock() is responsible to clean-up
the MPTCP level status, and is called when the msk transition
to TCP_CLOSE.
The protocol level close() does not force anymore the TCP_CLOSE
status, but orphan the msk socket and all the subflows.
Orphaned msk sockets are forciby closed after a timeout or
when all MPTCP-level data is acked.
There is a caveat about keeping the orphaned subflows around:
the TCP stack can asynchronusly call tcp_cleanup_ulp() on them via
tcp_close(). To prevent accessing freed memory on later MPTCP
level operations, the msk acquires a reference to each subflow
socket and prevent subflow_ulp_release() from releasing the
subflow context before __mptcp_destroy_sock().
The additional subflow references are released by __mptcp_done()
and the async ULP release is detected checking ULP ops. If such
field has been already cleared by the ULP release path, the
dangling context is freed directly by __mptcp_done().
Co-developed-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Track the next MPTCP sequence number used on xmit,
currently always equal to write_next.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Preparation patch to track the data pending in the msk
write queue. No functional change introduced here
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The current argument list is pretty long and quite unreadable,
move many of them into a specific struct. Later patches
will add more stuff to such struct.
Additionally drop the 'timeo' argument, now unused.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
remove some of code duplications an allow preventing
rescheduling on close.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
unlocked version of protocol level close, will be used by
MPTCP to allow decouple orphaning and subflow level close.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
mptcp_push_pending() is called even on orphaned
msk (and orphaned subflows), if there is outstanding
data at close() time.
To cope with the above MPTCP needs to handle explicitly
the allocation failure on xmit. The newly introduced
do_tcp_sendfrag() allows that, just plug it.
We can additionally drop a couple of sanity checks,
duplicate in the TCP code.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Will be needed by the next patch, as MPTCP needs to handle
directly the error/memory-allocation-needed path.
No functional changes intended.
Additionally let MPTCP code access the tcp_remove_empty_skb()
helper.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Packets are processed even though the first fragment don't include all
headers through the upper layer header. This breaks TAHI IPv6 Core
Conformance Test v6LC.1.3.6.
Referring to RFC8200 SECTION 4.5: "If the first fragment does not include
all headers through an Upper-Layer header, then that fragment should be
discarded and an ICMP Parameter Problem, Code 3, message should be sent to
the source of the fragment, with the Pointer field set to zero."
The fragment needs to be validated the same way it is done in
commit 2efdaaaf88 ("IPv6: reply ICMP error if the first fragment don't
include all headers") for ipv6. Wrap the validation into a common function,
ipv6_frag_thdr_truncated() to check for truncation in the upper layer
header. This validation does not fullfill all aspects of RFC 8200,
section 4.5, but is at the moment sufficient to pass mentioned TAHI test.
In netfilter, utilize the fragment offset returned by find_prev_fhdr() to
let ipv6_frag_thdr_truncated() start it's traverse from the fragment
header.
Return 0 to drop the fragment in the netfilter. This is the same behaviour
as used on other protocol errors in this function, e.g. when
nf_ct_frag6_queue() returns -EPROTO. The Fragment will later be picked up
by ipv6_frag_rcv() in reassembly.c. ipv6_frag_rcv() will then send an
appropriate ICMP Parameter Problem message back to the source.
References commit 2efdaaaf88 ("IPv6: reply ICMP error if the first
fragment don't include all headers")
Signed-off-by: Georg Kohmann <geokohma@cisco.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Link: https://lore.kernel.org/r/20201111115025.28879-1-geokohma@cisco.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Calls to nla_strlcpy are now replaced by calls to nla_strscpy which is the new
name of this function.
Signed-off-by: Francis Laniel <laniel_francis@privacyrequired.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
nla_strlcpy now returns -E2BIG if src was truncated when written to dst.
It also returns this error value if dstsize is 0 or higher than INT_MAX.
For example, if src is "foo\0" and dst is 3 bytes long, the result will be:
1. "foG" after memcpy (G means garbage).
2. "fo\0" after memset.
3. -E2BIG is returned because src was not completely written into dst.
The callers of nla_strlcpy were modified to take into account this modification.
Signed-off-by: Francis Laniel <laniel_francis@privacyrequired.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAl+xZoMTHG1rbEBwZW5n
dXRyb25peC5kZQAKCRCpyVqK+u3vqX8lB/4gQq9MTczYjSxVGgqaEyToftX7rokl
EiP6RcpXKvAY8p0IJHEWHeCGOqsD5am4xo6M/Z5nMAinBdywweSvQRdU8ZDdCb84
AxJEbrkU7JTNqHbQnLp3wzl5sHPAwvRavf9plFwnPosMM2nS0HcPnjaj9kgO3cLI
E/fMa+WmPwDjMEIBM2TJCgFh9pH5Fs8I3SRHC/TUYwigXKVtgIuIm1o6t4evBk9w
zBW+5HX++r2FSt0164vVZyBCOCK/z2tEMCEO8l3mrUKdjBy3jAFqXfWxcQbaFy8f
Oy8Nx1vgNZYVH7RqYJ6JuQO6/wQIPAWb6KOgDrDWaM6jl3ZdA7/gBdiR
=Ed6S
-----END PGP SIGNATURE-----
Merge tag 'linux-can-fixes-for-5.10-20201115' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2020-11-15
Anant Thazhemadam contributed two patches for the AF_CAN that prevent potential
access of uninitialized member in can_rcv() and canfd_rcv().
The next patch is by Alejandro Concepcion Rodriguez and changes can_restart()
to use the correct function to push a skb into the networking stack from
process context.
Zhang Qilong's patch fixes a memory leak in the error path of the ti_hecc's
probe function.
A patch by me fixes mcba_usb_start_xmit() function in the mcba_usb driver, to
first fill the skb and then pass it to can_put_echo_skb().
Colin Ian King's patch fixes a potential integer overflow on shift in the
peak_usb driver.
The next two patches target the flexcan driver, a patch by me adds the missing
"req_bit" to the stop mode property comment (which was broken during net-next
for v5.10). Zhang Qilong's patch fixes the failure handling of
pm_runtime_get_sync().
The next seven patches target the m_can driver including the tcan4x5x spi
driver glue code. Enric Balletbo i Serra's patch for the tcan4x5x Kconfig fix
the REGMAP_SPI dependency handling. A patch by me for the tcan4x5x driver's
probe() function adds missing error handling to for devm_regmap_init(), and in
tcan4x5x_can_remove() the order of deregistration is fixed. Wu Bo's patch for
the m_can driver fixes the state change handling in
m_can_handle_state_change(). Two patches by Dan Murphy first introduce
m_can_class_free_dev() and then make use of it to fix the freeing of the can
device. A patch by Faiz Abbas add a missing shutdown of the CAN controller in
the m_can_stop() function.
* tag 'linux-can-fixes-for-5.10-20201115' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
can: m_can: m_can_stop(): set device to software init mode before closing
can: m_can: Fix freeing of can device from peripherials
can: m_can: m_can_class_free_dev(): introduce new function
can: m_can: m_can_handle_state_change(): fix state change
can: tcan4x5x: tcan4x5x_can_remove(): fix order of deregistration
can: tcan4x5x: tcan4x5x_can_probe(): add missing error checking for devm_regmap_init()
can: tcan4x5x: replace depends on REGMAP_SPI with depends on SPI
can: flexcan: fix failure handling of pm_runtime_get_sync()
can: flexcan: flexcan_setup_stop_mode(): add missing "req_bit" to stop mode property comment
can: peak_usb: fix potential integer overflow on shift of a int
can: mcba_usb: mcba_usb_start_xmit(): first fill skb, then pass to can_put_echo_skb()
can: ti_hecc: Fix memleak in ti_hecc_probe
can: dev: can_restart(): post buffer from the right context
can: af_can: prevent potential access of uninitialized member in canfd_rcv()
can: af_can: prevent potential access of uninitialized member in can_rcv()
====================
Link: https://lore.kernel.org/r/20201115174131.2089251-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In canfd_rcv(), cfd->len is uninitialized when skb->len = 0, and this
uninitialized cfd->len is accessed nonetheless by pr_warn_once().
Fix this uninitialized variable access by checking cfd->len's validity
condition (cfd->len > CANFD_MAX_DLEN) separately after the skb->len's
condition is checked, and appropriately modify the log messages that
are generated as well.
In case either of the required conditions fail, the skb is freed and
NET_RX_DROP is returned, same as before.
Fixes: d468984688 ("can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once")
Reported-by: syzbot+9bcb0c9409066696d3aa@syzkaller.appspotmail.com
Tested-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Link: https://lore.kernel.org/r/20201103213906.24219-3-anant.thazhemadam@gmail.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
In can_rcv(), cfd->len is uninitialized when skb->len = 0, and this
uninitialized cfd->len is accessed nonetheless by pr_warn_once().
Fix this uninitialized variable access by checking cfd->len's validity
condition (cfd->len > CAN_MAX_DLEN) separately after the skb->len's
condition is checked, and appropriately modify the log messages that
are generated as well.
In case either of the required conditions fail, the skb is freed and
NET_RX_DROP is returned, same as before.
Fixes: 8cb68751c1 ("can: af_can: can_rcv(): replace WARN_ONCE by pr_warn_once")
Reported-by: syzbot+9bcb0c9409066696d3aa@syzkaller.appspotmail.com
Tested-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Link: https://lore.kernel.org/r/20201103213906.24219-2-anant.thazhemadam@gmail.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
If THIS_MODULE is not set, the module would be removed while debugfs is
being used.
It eventually makes kernel panic.
Fixes: c6c8fea297 ("net: Add batman-adv meshing protocol")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Commit d3fd65484c ("net: core: add dev_sw_netstats_tx_add") has added
function "dev_sw_netstats_tx_add()" to update net device per-cpu TX
stats.
Use this function instead of own code.
While on it, remove xfrmi_get_stats64() and replace it with
dev_get_tstats64().
Signed-off-by: Lev Stipakov <lev@openvpn.net>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/20201113215939.147007-1-lev@openvpn.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit d3fd65484c ("net: core: add dev_sw_netstats_tx_add") has added
function "dev_sw_netstats_tx_add()" to update net device per-cpu TX
stats.
Use this function instead of own code.
While on it, remove internal_get_stats() and replace it
with dev_get_tstats64().
Signed-off-by: Lev Stipakov <lev@openvpn.net>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/20201113215336.145998-1-lev@openvpn.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If sb_occ_port_pool_get() failed in devlink_nl_sb_port_pool_fill(),
msg should be canceled by genlmsg_cancel().
Fixes: df38dafd25 ("devlink: implement shared buffer occupancy monitoring interface")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Link: https://lore.kernel.org/r/20201113111622.11040-1-wanghai38@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Both IPv4 and IPv6 needs it via a function pointer.
Following patch will avoid the indirect call.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch adds an IPv4 routes encapsulation attribute
to the result of netlink RTM_GETROUTE requests
(e.g. ip route get 192.0.2.1).
Signed-off-by: Oliver Herms <oliver.peter.herms@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20201113085517.GA1307262@tws
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Static checking revealed that a previous fix to
netlbl_unlabel_staticlist() leaves a stack variable uninitialized,
this patches fixes that.
Fixes: 866358ec33 ("netlabel: fix our progress tracking in netlbl_unlabel_staticlist()")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Link: https://lore.kernel.org/r/160530304068.15651.18355773009751195447.stgit@sifl
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit bdb7cc643f ("ipv6: Count interface receive statistics on the
ingress netdev") removed all callees for ipv6_skb_idev(). Hence, since
then, ipv6_skb_idev() is unused and make CC=clang W=1 warns:
net/ipv6/exthdrs.c:909:33:
warning: unused function 'ipv6_skb_idev' [-Wunused-function]
So, remove this unused function and a -Wunused-function warning.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lore.kernel.org/r/20201113135012.32499-1-lukas.bulwahn@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
A call trace was found in Hangbin's Codenomicon testing with debug kernel:
[ 2615.981988] ODEBUG: free active (active state 0) object type: timer_list hint: sctp_generate_proto_unreach_event+0x0/0x3a0 [sctp]
[ 2615.995050] WARNING: CPU: 17 PID: 0 at lib/debugobjects.c:328 debug_print_object+0x199/0x2b0
[ 2616.095934] RIP: 0010:debug_print_object+0x199/0x2b0
[ 2616.191533] Call Trace:
[ 2616.194265] <IRQ>
[ 2616.202068] debug_check_no_obj_freed+0x25e/0x3f0
[ 2616.207336] slab_free_freelist_hook+0xeb/0x140
[ 2616.220971] kfree+0xd6/0x2c0
[ 2616.224293] rcu_do_batch+0x3bd/0xc70
[ 2616.243096] rcu_core+0x8b9/0xd00
[ 2616.256065] __do_softirq+0x23d/0xacd
[ 2616.260166] irq_exit+0x236/0x2a0
[ 2616.263879] smp_apic_timer_interrupt+0x18d/0x620
[ 2616.269138] apic_timer_interrupt+0xf/0x20
[ 2616.273711] </IRQ>
This is because it holds asoc when transport->proto_unreach_timer starts
and puts asoc when the timer stops, and without holding transport the
transport could be freed when the timer is still running.
So fix it by holding/putting transport instead for proto_unreach_timer
in transport, just like other timers in transport.
v1->v2:
- Also use sctp_transport_put() for the "out_unlock:" path in
sctp_generate_proto_unreach_event(), as Marcelo noticed.
Fixes: 50b5d6ad63 ("sctp: Fix a race between ICMP protocol unreachable and connect()")
Reported-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Link: https://lore.kernel.org/r/102788809b554958b13b95d33440f5448113b8d6.1605331373.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Before commit c0cfa2d8a7 ("vsock: add multi-transports support"),
if a G2H transport was loaded (e.g. virtio transport), every packets
was forwarded to the host, regardless of the destination CID.
The H2G transports implemented until then (vhost-vsock, VMCI) always
responded with an error, if the destination CID was not
VMADDR_CID_HOST.
From that commit, we are using the remote CID to decide which
transport to use, so packets with remote CID > VMADDR_CID_HOST(2)
are sent only through H2G transport. If no H2G is available, packets
are discarded directly in the guest.
Some use cases (e.g. Nitro Enclaves [1]) rely on the old behaviour
to implement sibling VMs communication, so we restore the old
behavior when no H2G is registered.
It will be up to the host to discard packets if the destination is
not the right one. As it was already implemented before adding
multi-transport support.
Tested with nested QEMU/KVM by me and Nitro Enclaves by Andra.
[1] Documentation/virt/ne_overview.rst
Cc: Jorgen Hansen <jhansen@vmware.com>
Cc: Dexuan Cui <decui@microsoft.com>
Fixes: c0cfa2d8a7 ("vsock: add multi-transports support")
Reported-by: Andra Paraschiv <andraprs@amazon.com>
Tested-by: Andra Paraschiv <andraprs@amazon.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20201112133837.34183-1-sgarzare@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Daniel Borkmann says:
====================
pull-request: bpf-next 2020-11-14
1) Add BTF generation for kernel modules and extend BTF infra in kernel
e.g. support for split BTF loading and validation, from Andrii Nakryiko.
2) Support for pointers beyond pkt_end to recognize LLVM generated patterns
on inlined branch conditions, from Alexei Starovoitov.
3) Implements bpf_local_storage for task_struct for BPF LSM, from KP Singh.
4) Enable FENTRY/FEXIT/RAW_TP tracing program to use the bpf_sk_storage
infra, from Martin KaFai Lau.
5) Add XDP bulk APIs that introduce a defer/flush mechanism to optimize the
XDP_REDIRECT path, from Lorenzo Bianconi.
6) Fix a potential (although rather theoretical) deadlock of hashtab in NMI
context, from Song Liu.
7) Fixes for cross and out-of-tree build of bpftool and runqslower allowing build
for different target archs on same source tree, from Jean-Philippe Brucker.
8) Fix error path in htab_map_alloc() triggered from syzbot, from Eric Dumazet.
9) Move functionality from test_tcpbpf_user into the test_progs framework so it
can run in BPF CI, from Alexander Duyck.
10) Lift hashtab key_size limit to be larger than MAX_BPF_STACK, from Florian Lehner.
Note that for the fix from Song we have seen a sparse report on context
imbalance which requires changes in sparse itself for proper annotation
detection where this is currently being discussed on linux-sparse among
developers [0]. Once we have more clarification/guidance after their fix,
Song will follow-up.
[0] https://lore.kernel.org/linux-sparse/CAHk-=wh4bx8A8dHnX612MsDO13st6uzAz1mJ1PaHHVevJx_ZCw@mail.gmail.com/T/https://lore.kernel.org/linux-sparse/20201109221345.uklbp3lzgq6g42zb@ltop.local/T/
* git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (66 commits)
net: mlx5: Add xdp tx return bulking support
net: mvpp2: Add xdp tx return bulking support
net: mvneta: Add xdp tx return bulking support
net: page_pool: Add bulk support for ptr_ring
net: xdp: Introduce bulking for xdp tx return path
bpf: Expose bpf_d_path helper to sleepable LSM hooks
bpf: Augment the set of sleepable LSM hooks
bpf: selftest: Use bpf_sk_storage in FENTRY/FEXIT/RAW_TP
bpf: Allow using bpf_sk_storage in FENTRY/FEXIT/RAW_TP
bpf: Rename some functions in bpf_sk_storage
bpf: Folding omem_charge() into sk_storage_charge()
selftests/bpf: Add asm tests for pkt vs pkt_end comparison.
selftests/bpf: Add skb_pkt_end test
bpf: Support for pointers beyond pkt_end.
tools/bpf: Always run the *-clean recipes
tools/bpf: Add bootstrap/ to .gitignore
bpf: Fix NULL dereference in bpf_task_storage
tools/bpftool: Fix build slowdown
tools/runqslower: Build bpftool using HOSTCC
tools/runqslower: Enable out-of-tree build
...
====================
Link: https://lore.kernel.org/r/20201114020819.29584-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
genlmsg_cancel() needs to be called in the error path of
inet6_fill_ifmcaddr and inet6_fill_ifacaddr to cancel
the message.
Fixes: 6ecf4c37eb ("ipv6: enable IFA_TARGET_NETNSID for RTM_GETADDR")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201112080950.1476302-1-zhangqilong3@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Introduce the capability to batch page_pool ptr_ring refill since it is
usually run inside the driver NAPI tx completion loop.
Suggested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Co-developed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://lore.kernel.org/bpf/08dd249c9522c001313f520796faa777c4089e1c.1605267335.git.lorenzo@kernel.org
XDP bulk APIs introduce a defer/flush mechanism to return
pages belonging to the same xdp_mem_allocator object
(identified via the mem.id field) in bulk to optimize
I-cache and D-cache since xdp_return_frame is usually run
inside the driver NAPI tx completion loop.
The bulk queue size is set to 16 to be aligned to how
XDP_REDIRECT bulking works. The bulk is flushed when
it is full or when mem.id changes.
xdp_frame_bulk is usually stored/allocated on the function
call-stack to avoid locking penalties.
Current implementation considers only page_pool memory model.
Suggested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Co-developed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://lore.kernel.org/bpf/e190c03eac71b20c8407ae0fc2c399eda7835f49.1605267335.git.lorenzo@kernel.org
Commit 58956317c8 ("neighbor: Improve garbage collection")
guarantees neighbour table entries a five-second lifetime. Processes
which make heavy use of multicast can fill the neighour table with
multicast addresses in five seconds. At that point, neighbour entries
can't be GC-ed because they aren't five seconds old yet, the kernel
log starts to fill up with "neighbor table overflow!" messages, and
sends start to fail.
This patch allows multicast addresses to be thrown out before they've
lived out their five seconds. This makes room for non-multicast
addresses and makes messages to all addresses more reliable in these
circumstances.
Fixes: 58956317c8 ("neighbor: Improve garbage collection")
Signed-off-by: Jeff Dike <jdike@akamai.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20201113015815.31397-1-jdike@akamai.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Replace strncpy() with strscpy(), fixes the following warning:
In function 'bearer_name_validate',
inlined from 'tipc_enable_bearer' at net/tipc/bearer.c:246:7:
net/tipc/bearer.c:141:2: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation]
strncpy(name_copy, name, TIPC_MAX_BEARER_NAME);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Link: https://lore.kernel.org/r/20201112093442.8132-1-wenlin.kang@windriver.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* injection/radiotap updates for new test capabilities
* remove WDS support - even years ago when we turned
it off by default it was already basically unusable
* support for HE (802.11ax) rates for beacons
* support for some vendor-specific HE rates
* many other small features/cleanups
-----BEGIN PGP SIGNATURE-----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=TGgF
-----END PGP SIGNATURE-----
Merge tag 'mac80211-next-for-net-next-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Some updates:
* injection/radiotap updates for new test capabilities
* remove WDS support - even years ago when we turned
it off by default it was already basically unusable
* support for HE (802.11ax) rates for beacons
* support for some vendor-specific HE rates
* many other small features/cleanups
* tag 'mac80211-next-for-net-next-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (21 commits)
nl80211: fix kernel-doc warning in the new SAE attribute
cfg80211: remove WDS code
mac80211: remove WDS-related code
rt2x00: remove WDS code
b43legacy: remove WDS code
b43: remove WDS code
carl9170: remove WDS code
ath9k: remove WDS code
wireless: remove CONFIG_WIRELESS_WDS
mac80211: assure that certain drivers adhere to DONT_REORDER flag
mac80211: don't overwrite QoS TID of injected frames
mac80211: adhere to Tx control flag that prevents frame reordering
mac80211: add radiotap flag to assure frames are not reordered
mac80211: save HE oper info in BSS config for mesh
cfg80211: add support to configure HE MCS for beacon rate
nl80211: fix beacon tx rate mask validation
nl80211/cfg80211: fix potential infinite loop
cfg80211: Add support to calculate and report 4096-QAM HE rates
cfg80211: Add support to configure SAE PWE value to drivers
ieee80211: Add definition for WFA DPP
...
====================
Link: https://lore.kernel.org/r/20201113101148.25268-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* a use-after-free fix in rfkill
* a memory leak fix in the mac80211 TX status path
* some rate scaling fixes
* a fix for the often-reported (by syzbot) sleeping
in atomic issue with mac80211's station removal
-----BEGIN PGP SIGNATURE-----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=r2Wn
-----END PGP SIGNATURE-----
Merge tag 'mac80211-for-net-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
A handful of fixes:
* a use-after-free fix in rfkill
* a memory leak fix in the mac80211 TX status path
* some rate scaling fixes
* a fix for the often-reported (by syzbot) sleeping
in atomic issue with mac80211's station removal
* tag 'mac80211-for-net-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211:
mac80211: free sta in sta_info_insert_finish() on errors
mac80211: minstrel: fix tx status processing corner case
mac80211: minstrel: remove deferred sampling code
mac80211: fix memory leak on filtered powersave frames
rfkill: Fix use-after-free in rfkill_resume()
====================
Link: https://lore.kernel.org/r/20201113093421.24025-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch enables the FENTRY/FEXIT/RAW_TP tracing program to use
the bpf_sk_storage_(get|delete) helper, so those tracing programs
can access the sk's bpf_local_storage and the later selftest
will show some examples.
The bpf_sk_storage is currently used in bpf-tcp-cc, tc,
cg sockops...etc which is running either in softirq or
task context.
This patch adds bpf_sk_storage_get_tracing_proto and
bpf_sk_storage_delete_tracing_proto. They will check
in runtime that the helpers can only be called when serving
softirq or running in a task context. That should enable
most common tracing use cases on sk.
During the load time, the new tracing_allowed() function
will ensure the tracing prog using the bpf_sk_storage_(get|delete)
helper is not tracing any bpf_sk_storage*() function itself.
The sk is passed as "void *" when calling into bpf_local_storage.
This patch only allows tracing a kernel function.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20201112211313.2587383-1-kafai@fb.com
Rename some of the functions currently prefixed with sk_storage
to bpf_sk_storage. That will make the next patch have fewer
prefix check and also bring the bpf_sk_storage.c to a more
consistent function naming.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: KP Singh <kpsingh@google.com>
Link: https://lore.kernel.org/bpf/20201112211307.2587021-1-kafai@fb.com
sk_storage_charge() is the only user of omem_charge().
This patch simplifies it by folding omem_charge() into
sk_storage_charge().
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: KP Singh <kpsingh@google.com>
Link: https://lore.kernel.org/bpf/20201112211301.2586255-1-kafai@fb.com
The x25_disconnect function in x25_subr.c would decrease the refcount of
"x25->neighbour" (struct x25_neigh) and reset this pointer to NULL.
However, the x25_rx_call_request function in af_x25.c, which is called
when we receive a connection request, does not increase the refcount when
it assigns the pointer.
Fix this issue by increasing the refcount of "struct x25_neigh" in
x25_rx_call_request.
This patch fixes frequent kernel crashes when using AF_X25 sockets.
Fixes: 4becb7ee5b ("net/x25: Fix x25_neigh refcnt leak when x25 disconnect")
Cc: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Link: https://lore.kernel.org/r/20201112103506.5875-1-xie.he.0141@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If a user unbinds and re-binds a NC-SI aware driver the kernel will
attempt to register the netlink interface at runtime. The structure is
marked __ro_after_init so registration fails spectacularly at this point.
# echo 1e660000.ethernet > /sys/bus/platform/drivers/ftgmac100/unbind
# echo 1e660000.ethernet > /sys/bus/platform/drivers/ftgmac100/bind
ftgmac100 1e660000.ethernet: Read MAC address 52:54:00:12:34:56 from chip
ftgmac100 1e660000.ethernet: Using NCSI interface
8<--- cut here ---
Unable to handle kernel paging request at virtual address 80a8f858
pgd = 8c768dd6
[80a8f858] *pgd=80a0841e(bad)
Internal error: Oops: 80d [#1] SMP ARM
CPU: 0 PID: 116 Comm: sh Not tainted 5.10.0-rc3-next-20201111-00003-gdd25b227ec1e #51
Hardware name: Generic DT based system
PC is at genl_register_family+0x1f8/0x6d4
LR is at 0xff26ffff
pc : [<8073f930>] lr : [<ff26ffff>] psr: 20000153
sp : 8553bc80 ip : 81406244 fp : 8553bd04
r10: 8085d12c r9 : 80a8f73c r8 : 85739000
r7 : 00000017 r6 : 80a8f860 r5 : 80c8ab98 r4 : 80a8f858
r3 : 00000000 r2 : 00000000 r1 : 81406130 r0 : 00000017
Flags: nzCv IRQs on FIQs off Mode SVC_32 ISA ARM Segment none
Control: 00c5387d Table: 85524008 DAC: 00000051
Process sh (pid: 116, stack limit = 0x1f1988d6)
...
Backtrace:
[<8073f738>] (genl_register_family) from [<80860ac0>] (ncsi_init_netlink+0x20/0x48)
r10:8085d12c r9:80c8fb0c r8:85739000 r7:00000000 r6:81218000 r5:85739000
r4:8121c000
[<80860aa0>] (ncsi_init_netlink) from [<8085d740>] (ncsi_register_dev+0x1b0/0x210)
r5:8121c400 r4:8121c000
[<8085d590>] (ncsi_register_dev) from [<805a8060>] (ftgmac100_probe+0x6e0/0x778)
r10:00000004 r9:80950228 r8:8115bc10 r7:8115ab00 r6:9eae2c24 r5:813b6f88
r4:85739000
[<805a7980>] (ftgmac100_probe) from [<805355ec>] (platform_drv_probe+0x58/0xa8)
r9:80c76bb0 r8:00000000 r7:80cd4974 r6:80c76bb0 r5:8115bc10 r4:00000000
[<80535594>] (platform_drv_probe) from [<80532d58>] (really_probe+0x204/0x514)
r7:80cd4974 r6:00000000 r5:80cd4868 r4:8115bc10
Jakub pointed out that ncsi_register_dev is obviously broken, because
there is only one family so it would never work if there was more than
one ncsi netdev.
Fix the crash by registering the netlink family once on boot, and drop
the code to unregister it.
Fixes: 955dc68cb9 ("net/ncsi: Add generic netlink family")
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Link: https://lore.kernel.org/r/20201112061210.914621-1-joel@jms.id.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When dumping the name and NTP servers advertised by DHCP, a blank line
is emitted if either of the lists is empty. This can lead to confusing
issues such as the blank line getting flagged as warning. This happens
because the blank line is the result of pr_cont("\n") and that may see
its level corrupted by some other driver concurrently writing to the
console.
Fix this by making sure that the terminating newline is only emitted
if at least one entry in the lists was printed before.
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20201110073757.1284594-1-thierry.reding@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The initialization for 'err' with '-ENOSYS' is redundant and
can be removed, as it is updated soon and not used.
Changes since v1:
- Move the err declaration below struct sock *sk
Signed-off-by: Menglong Dong <dong.menglong@zte.com.cn>
Link: https://lore.kernel.org/r/5faa01d5.1c69fb81.8451c.cb5b@mx.google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Current release - regressions:
- arm64: dts: fsl-ls1028a-kontron-sl28: specify in-band mode for ENETC
Current release - bugs in new features:
- mptcp: provide rmem[0] limit offset to fix oops
Previous release - regressions:
- IPv6: Set SIT tunnel hard_header_len to zero to fix path MTU
calculations
- lan743x: correctly handle chips with internal PHY
- bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE
- mlx5e: Fix VXLAN port table synchronization after function reload
Previous release - always broken:
- bpf: Zero-fill re-used per-cpu map element
- net: udp: fix out-of-order packets when forwarding with UDP GSO
fraglists turned on
- fix UDP header access on Fast/frag0 UDP GRO
- fix IP header access and skb lookup on Fast/frag0 UDP GRO
- ethtool: netlink: add missing netdev_features_change() call
- net: Update window_clamp if SOCK_RCVBUF is set
- igc: Fix returning wrong statistics
- ch_ktls: fix multiple leaks and corner cases in Chelsio TLS offload
- tunnels: Fix off-by-one in lower MTU bounds for ICMP/ICMPv6 replies
- r8169: disable hw csum for short packets on all chip versions
- vrf: Fix fast path output packet handling with async Netfilter rules
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----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=AKM7
-----END PGP SIGNATURE-----
Merge tag 'net-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Current release - regressions:
- arm64: dts: fsl-ls1028a-kontron-sl28: specify in-band mode for
ENETC
Current release - bugs in new features:
- mptcp: provide rmem[0] limit offset to fix oops
Previous release - regressions:
- IPv6: Set SIT tunnel hard_header_len to zero to fix path MTU
calculations
- lan743x: correctly handle chips with internal PHY
- bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE
- mlx5e: Fix VXLAN port table synchronization after function reload
Previous release - always broken:
- bpf: Zero-fill re-used per-cpu map element
- fix out-of-order UDP packets when forwarding with UDP GSO fraglists
turned on:
- fix UDP header access on Fast/frag0 UDP GRO
- fix IP header access and skb lookup on Fast/frag0 UDP GRO
- ethtool: netlink: add missing netdev_features_change() call
- net: Update window_clamp if SOCK_RCVBUF is set
- igc: Fix returning wrong statistics
- ch_ktls: fix multiple leaks and corner cases in Chelsio TLS offload
- tunnels: Fix off-by-one in lower MTU bounds for ICMP/ICMPv6 replies
- r8169: disable hw csum for short packets on all chip versions
- vrf: Fix fast path output packet handling with async Netfilter
rules"
* tag 'net-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (65 commits)
lan743x: fix use of uninitialized variable
net: udp: fix IP header access and skb lookup on Fast/frag0 UDP GRO
net: udp: fix UDP header access on Fast/frag0 UDP GRO
devlink: Avoid overwriting port attributes of registered port
vrf: Fix fast path output packet handling with async Netfilter rules
cosa: Add missing kfree in error path of cosa_write
net: switch to the kernel.org patchwork instance
ch_ktls: stop the txq if reaches threshold
ch_ktls: tcb update fails sometimes
ch_ktls/cxgb4: handle partial tag alone SKBs
ch_ktls: don't free skb before sending FIN
ch_ktls: packet handling prior to start marker
ch_ktls: Correction in middle record handling
ch_ktls: missing handling of header alone
ch_ktls: Correction in trimmed_len calculation
cxgb4/ch_ktls: creating skbs causes panic
ch_ktls: Update cheksum information
ch_ktls: Correction in finding correct length
cxgb4/ch_ktls: decrypted bit is not enough
net/x25: Fix null-ptr-deref in x25_connect
...
udp{4,6}_lib_lookup_skb() use ip{,v6}_hdr() to get IP header of the
packet. While it's probably OK for non-frag0 paths, this helpers
will also point to junk on Fast/frag0 GRO when all headers are
located in frags. As a result, sk/skb lookup may fail or give wrong
results. To support both GRO modes, skb_gro_network_header() might
be used. To not modify original functions, add private versions of
udp{4,6}_lib_lookup_skb() only to perform correct sk lookups on GRO.
Present since the introduction of "application-level" UDP GRO
in 4.7-rc1.
Misc: replace totally unneeded ternaries with plain ifs.
Fixes: a6024562ff ("udp: Add GRO functions to UDP socket")
Suggested-by: Willem de Bruijn <willemb@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
UDP GRO uses udp_hdr(skb) in its .gro_receive() callback. While it's
probably OK for non-frag0 paths (when all headers or even the entire
frame are already in skb head), this inline points to junk when
using Fast GRO (napi_gro_frags() or napi_gro_receive() with only
Ethernet header in skb head and all the rest in the frags) and breaks
GRO packet compilation and the packet flow itself.
To support both modes, skb_gro_header_fast() + skb_gro_header_slow()
are typically used. UDP even has an inline helper that makes use of
them, udp_gro_udphdr(). Use that instead of troublemaking udp_hdr()
to get rid of the out-of-order delivers.
Present since the introduction of plain UDP GRO in 5.0-rc1.
Fixes: e20cf8d3f1 ("udp: implement GRO for plain UDP sockets.")
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Cited commit in fixes tag overwrites the port attributes for the
registered port.
Avoid such error by checking registered flag before setting attributes.
Fixes: 71ad8d55f8 ("devlink: Replace devlink_port_attrs_set parameters with a struct")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20201111034744.35554-1-parav@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Some drivers fill the status rate list without setting the rate index after
the final rate to -1. minstrel_ht already deals with this, but minstrel
doesn't, which causes it to get stuck at the lowest rate on these drivers.
Fix this by checking the count as well.
Cc: stable@vger.kernel.org
Fixes: cccf129f82 ("mac80211: add the 'minstrel' rate control algorithm")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201111183359.43528-3-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Deferring sampling attempts to the second stage has some bad interactions
with drivers that process the rate table in hardware and use the probe flag
to indicate probing packets (e.g. most mt76 drivers). On affected drivers
it can lead to probing not working at all.
If the link conditions turn worse, it might not be such a good idea to
do a lot of sampling for lower rates in this case.
Fix this by simply skipping the sample attempt instead of deferring it,
but keep the checks that would allow it to be sampled if it was skipped
too often, but only if it has less than 95% success probability.
Also ensure that IEEE80211_TX_CTL_RATE_CTRL_PROBE is set for all probing
packets.
Cc: stable@vger.kernel.org
Fixes: cccf129f82 ("mac80211: add the 'minstrel' rate control algorithm")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201111183359.43528-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
After the status rework, ieee80211_tx_status_ext is leaking un-acknowledged
packets for stations in powersave mode.
To fix this, move the code handling those packets from __ieee80211_tx_status
into ieee80211_tx_status_ext
Reported-by: Tobias Waldvogel <tobias.waldvogel@gmail.com>
Fixes: 3318111cf6 ("mac80211: reduce duplication in tx status functions")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201111183359.43528-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If a device is getting removed or reprobed during resume, use-after-free
might happen. For example, h5_btrtl_resume() schedules a work queue for
device reprobing, which of course requires removal first.
If the removal happens in parallel with the device_resume() and wins the
race to acquire device_lock(), removal may remove the device from the PM
lists and all, but device_resume() is already running and will continue
when the lock can be acquired, thus calling rfkill_resume().
During this, if rfkill_set_block() is then called after the corresponding
*_unregister() and kfree() are called, there will be an use-after-free
in hci_rfkill_set_block():
BUG: KASAN: use-after-free in hci_rfkill_set_block+0x58/0xc0 [bluetooth]
...
Call trace:
dump_backtrace+0x0/0x154
show_stack+0x20/0x2c
dump_stack+0xbc/0x12c
print_address_description+0x88/0x4b0
__kasan_report+0x144/0x168
kasan_report+0x10/0x18
check_memory_region+0x19c/0x1ac
__kasan_check_write+0x18/0x24
hci_rfkill_set_block+0x58/0xc0 [bluetooth]
rfkill_set_block+0x9c/0x120
rfkill_resume+0x34/0x70
dpm_run_callback+0xf0/0x1f4
device_resume+0x210/0x22c
Fix this by checking rfkill->registered in rfkill_resume(). device_del()
in rfkill_unregister() requires device_lock() and the whole rfkill_resume()
is also protected by the same lock via device_resume(), we can make sure
either the rfkill->registered is false before rfkill_resume() starts or the
rfkill device won't be unregistered before rfkill_resume() returns.
As async_resume() holds a reference to the device, at this level there can
be no use-after-free; only in the user that doesn't expect this scenario.
Fixes: 8589086f4e ("Bluetooth: hci_h5: Turn off RTL8723BS on suspend, reprobe on resume")
Signed-off-by: Claire Chang <tientzu@chromium.org>
Link: https://lore.kernel.org/r/20201110084908.219088-1-tientzu@chromium.org
[edit commit message for clarity and add more info provided later]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Be more consistent about the way in which the nexthop flags are set and
set them in one go.
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20201110102553.1924232-1-idosch@idosch.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The disable_policy and disable_xfrm are a per-interface sysctl to
disable IPsec policy or encryption on an interface. However, while a
"all" variant is exposed, it was a noop since it was never evaluated.
We use the usual "or" logic for this kind of sysctls.
Signed-off-by: Vincent Bernat <vincent@bernat.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Distant QRTR nodes can be accessed via an other node that acts as
a bridge. When the a QRTR endpoint associated to a bridge node is
released, all the linked distant nodes should also be released.
This patch fixes endpoint release by:
- Submitting QRTR BYE message locally on behalf of all the nodes
accessible through the endpoint.
- Removing all the routable node IDs from radix tree pointing to
the released node endpoint.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This will be requested for allocating control packet in atomic context.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In order to reach non-immediate remote node services that are
accessed through an intermediate node, the route to the remote
node needs to be saved.
E.g for a [node1 <=> node2 <=> node3] network
- node2 forwards node3 service to node1
- node1 must save node2 as route for reaching node3
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
A remote endpoint (immediate neighbors node) can forward services
from other nodes (non-immadiate), in that case ctrl packet node ID
(offering distant service) can differ from the qrtr source node
(forwarding the packet).
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The port ID for control messages was uncorrectly set with broadcast
node ID value, causing message to be dropped on remote side since
not passing packet filtering (cb->dst_port != QRTR_PORT_CTRL).
Fixes: d27e77a3de ("net: qrtr: Reset the node and port ID of broadcast messages")
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This fixes a regression for blocking connects introduced by commit
4becb7ee5b ("net/x25: Fix x25_neigh refcnt leak when x25 disconnect").
The x25->neighbour is already set to "NULL" by x25_disconnect() now,
while a blocking connect is waiting in
x25_wait_for_connection_establishment(). Therefore x25->neighbour must
not be accessed here again and x25->state is also already set to
X25_STATE_0 by x25_disconnect().
Fixes: 4becb7ee5b ("net/x25: Fix x25_neigh refcnt leak when x25 disconnect")
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Reviewed-by: Xie He <xie.he.0141@gmail.com>
Link: https://lore.kernel.org/r/20201109065449.9014-1-ms@dev.tdt.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that rpcrdma_ep is no longer part of rpcrdma_xprt, there are
four or five serial address dereferences needed to get to the
IB device needed for DMA unmapping.
Instead, let's use the same pattern that regbufs use: cache a
pointer to the device in the MR, and use that as the indication
that unmapping is necessary.
This also guarantees that the exact same device is used for DMA
mapping and unmapping, even if the r_xprt's ep has been replaced. I
don't think this can happen today, but future changes might break
this assumption.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Clean up: This function is now invoked only in frwr_ops.c. The move
enables deduplication of the trace_xprtrdma_mr_unmap() call site.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
->buf_free is called nearly once per RPC. Only rarely does
xprt_rdma_free() have to do anything, thus tracing every one of
these calls seems unnecessary. Instead, just throw a trace event
when that one occasional RPC still has MRs that need to be
released.
xprt_rdma_free() is further micro-optimized to reduce the amount of
work done in the common case.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Tie each MR event to the requesting rpc_task to make it easier to
follow MR ownership and control flow.
MR unmapping and recycling can happen in the background, after an
MR's mr_req field is stale, so set up a separate tracepoint class
for those events.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
- Rename it following the "_err" suffix convention
- Replace display of kernel memory addresses
- Tie MR exhaustion to a peer IP address, similar to the createmrs
tracepoint
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
- Replace displayed kernel memory addresses
- Tie the XID and event with the peer's IP address
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Replace unnecessary display of kernel memory addresses.
Also, there are no longer any trace_xprtrdma_defer_cmp() call sites.
And remove the trace_xprtrdma_leaked_rep() tracepoint because there
doesn't seem to be an overwhelming need to have a tracepoint for
catching a software bug that has long since been fixed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
- Rename the tracepoints with the "_err" suffix to indicate these
are rare error events
- Replace display of kernel memory addresses
- Tie the XID and error to a connection IP address instead
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
- Replace the display of kernel memory addresses
- Add "_err" to the end of its name to indicate that it's a
tracepoint that fires only when there's an error
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Set up a completion ID in each rpcrdma_frwr. The ID is used to match
an incoming completion to a transport (CQ) and other MR-related
activity.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Set up a completion ID in each rpcrdma_req. The ID is used to match
an incoming Send completion to a transport and to a previous
ib_post_send().
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Set up a completion ID in each rpcrdma_rep. The ID is used to match
an incoming Receive completion to a transport and to a previous
ib_post_recv().
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This replaces the BT_DBG function to bt_dev_dbg as it is cleaner to show
the controller index in the debug message.
Signed-off-by: Howard Chung <howardchung@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
According to the spec Ver 5.2, Vol 3, Part C, Sec 5.2.2.8:
Device in security mode 4 level 4 shall enforce:
128-bit equivalent strength for link and encryption keys required
using FIPS approved algorithms (E0 not allowed, SAFER+ not allowed,
and P-192 not allowed; encryption key not shortened)
This patch rejects connection with key size below 16 for FIPS
level services.
Signed-off-by: Archie Pusaka <apusaka@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
syzbot reported the following KASAN finding:
BUG: KASAN: nullptr-dereference in iucv_send_ctrl+0x390/0x3f0 net/iucv/af_iucv.c:385
Read of size 2 at addr 000000000000021e by task syz-executor907/519
CPU: 0 PID: 519 Comm: syz-executor907 Not tainted 5.9.0-syzkaller-07043-gbcf9877ad213 #0
Hardware name: IBM 3906 M04 701 (KVM/Linux)
Call Trace:
[<00000000c576af60>] unwind_start arch/s390/include/asm/unwind.h:65 [inline]
[<00000000c576af60>] show_stack+0x180/0x228 arch/s390/kernel/dumpstack.c:135
[<00000000c9dcd1f8>] __dump_stack lib/dump_stack.c:77 [inline]
[<00000000c9dcd1f8>] dump_stack+0x268/0x2f0 lib/dump_stack.c:118
[<00000000c5fed016>] print_address_description.constprop.0+0x5e/0x218 mm/kasan/report.c:383
[<00000000c5fec82a>] __kasan_report mm/kasan/report.c:517 [inline]
[<00000000c5fec82a>] kasan_report+0x11a/0x168 mm/kasan/report.c:534
[<00000000c98b5b60>] iucv_send_ctrl+0x390/0x3f0 net/iucv/af_iucv.c:385
[<00000000c98b6262>] iucv_sock_shutdown+0x44a/0x4c0 net/iucv/af_iucv.c:1457
[<00000000c89d3a54>] __sys_shutdown+0x12c/0x1c8 net/socket.c:2204
[<00000000c89d3b70>] __do_sys_shutdown net/socket.c:2212 [inline]
[<00000000c89d3b70>] __s390x_sys_shutdown+0x38/0x48 net/socket.c:2210
[<00000000c9e36eac>] system_call+0xe0/0x28c arch/s390/kernel/entry.S:415
There is nothing to shutdown if a connection has never been established.
Besides that iucv->hs_dev is not yet initialized if a socket is in
IUCV_OPEN state and iucv->path is not yet initialized if socket is in
IUCV_BOUND state.
So, just skip the shutdown calls for a socket in these states.
Fixes: eac3731bd0 ("[S390]: Add AF_IUCV socket support")
Fixes: 82492a355f ("af_iucv: add shutdown for HS transport")
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
[jwi: correct one Fixes tag]
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The skb is needed only to fetch the keys for the lookup.
Both functions are used from GRO stack, we do not want
accidental modification of the skb.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When net.ipv4.tcp_syncookies=1 and syn flood is happened,
cookie_v4_check or cookie_v6_check tries to redo what
tcp_v4_send_synack or tcp_v6_send_synack did,
rsk_window_clamp will be changed if SOCK_RCVBUF is set,
which will make rcv_wscale is different, the client
still operates with initial window scale and can overshot
granted window, the client use the initial scale but local
server use new scale to advertise window value, and session
work abnormally.
Fixes: e88c64f0a4 ("tcp: allow effective reduction of TCP's rcv-buffer via setsockopt")
Signed-off-by: Mao Wenan <wenan.mao@linux.alibaba.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/1604967391-123737-1-git-send-email-wenan.mao@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Some typos are found out by misspell-fixer tool:
$ misspell-fixer -rnv ./net/sched/
./net/sched/act_api.c:686
./net/sched/act_bpf.c:68
./net/sched/cls_rsvp.h:241
./net/sched/em_cmp.c:44
./net/sched/sch_pie.c:408
Fix typos found by misspell-fixer.
Signed-off-by: Menglong Dong <dong.menglong@zte.com.cn>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/r/5fa8e9d4.1c69fb81.5d889.5c64@mx.google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The current NetLabel code doesn't correctly keep track of the netlink
dump state in some cases, in particular when multiple interfaces with
large configurations are loaded. The problem manifests itself by not
reporting the full configuration to userspace, even though it is
loaded and active in the kernel. This patch fixes this by ensuring
that the dump state is properly reset when necessary inside the
netlbl_unlabel_staticlist() function.
Fixes: 8cc44579d1 ("NetLabel: Introduce static network labels for unlabeled connections")
Signed-off-by: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/160484450633.3752.16512718263560813473.stgit@sifl
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The initialization for 'err' with '-EINVAL' is redundant and
can be removed, as it is updated soon.
Changes since v1:
- Remove redundant empty line
Signed-off-by: Menglong Dong <dong.menglong@zte.com.cn>
Link: https://lore.kernel.org/r/20201108010541.12432-1-dong.menglong@zte.com.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
if xfrm_get_translator() failed, xfrm_user_policy() return without
freeing 'data', which is allocated in memdup_sockptr().
Fixes: 96392ee5a1 ("xfrm/compat: Translate 32-bit user_policy from sockptr")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Similar to commit fda55eca5a
("net: introduce skb_transport_header_was_set()"), avoid resetting
transport offsets that were already set by GRO layer. This not only
mirrors the behavior of __netif_receive_skb_core(), but also makes
sense when it comes to UDP GSO fraglists forwarding: transport offset
of such skbs is set only once by GRO receive callback and remains
untouched and correct up to the xmitting driver in 1:1 case, but
becomes junk after untagging in ingress VLAN case and breaks UDP
GSO offload. This does not happen after this change, and all types
of forwarding of UDP GSO fraglists work as expected.
Since v1 [1]:
- keep the code 1:1 with __netif_receive_skb_core() (Jakub).
[1] https://lore.kernel.org/netdev/zYurwsZRN7BkqSoikWQLVqHyxz18h4LhHU4NFa2Vw@cp4-web-038.plabs.ch
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Link: https://lore.kernel.org/r/7JgIkgEztzt0W6ZtC9V9Cnk5qfkrUFYcpN871syCi8@cp4-web-040.plabs.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
After having migrated all users remove ip_tunnel_get_stats64().
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Replace ip_tunnel_get_stats64() with the new identical core function
dev_get_tstats64().
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Replace ip_tunnel_get_stats64() with the new identical core function
dev_get_tstats64().
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Switch ip6_tunnel to the standard statistics pattern:
- use dev->stats for the less frequently accessed counters
- use dev->tstats for the frequently accessed counters
An additional benefit is that we now have 64bit statistics also on
32bit systems.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use netdev->tstats instead of a member of dsa_slave_priv for storing
a pointer to the per-cpu counters. This allows us to use core
functionality for statistics handling.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
It's a frequent pattern to use netdev->stats for the less frequently
accessed counters and per-cpu counters for the frequently accessed
counters (rx/tx bytes/packets). Add a default ndo_get_stats64()
implementation for this use case.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The mptcp proto struct currently does not provide the
required limit for forward memory scheduling. Under
pressure sk_rmem_schedule() will unconditionally try
to use such field and will oops.
Address the issue inheriting the tcp limit, as we already
do for the wmem one.
Fixes: 9c3f94e168 ("mptcp: add missing memory scheduling in the rx path")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/37af798bd46f402fb7c79f57ebbdd00614f5d7fa.1604861097.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
After updating userspace Ethtool from 5.7 to 5.9, I noticed that
NETDEV_FEAT_CHANGE is no more raised when changing netdev features
through Ethtool.
That's because the old Ethtool ioctl interface always calls
netdev_features_change() at the end of user request processing to
inform the kernel that our netdevice has some features changed, but
the new Netlink interface does not. Instead, it just notifies itself
with ETHTOOL_MSG_FEATURES_NTF.
Replace this ethtool_notify() call with netdev_features_change(), so
the kernel will be aware of any features changes, just like in case
with the ioctl interface. This does not omit Ethtool notifications,
as Ethtool itself listens to NETDEV_FEAT_CHANGE and drops
ETHTOOL_MSG_FEATURES_NTF on it
(net/ethtool/netlink.c:ethnl_netdev_event()).
From v1 [1]:
- dropped extra new line as advised by Jakub;
- no functional changes.
[1] https://lore.kernel.org/netdev/AlZXQ2o5uuTVHCfNGOiGgJ8vJ3KgO5YIWAnQjH0cDE@cp3-web-009.plabs.ch
Fixes: 0980bfcd69 ("ethtool: set netdev features with FEATURES_SET request")
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Link: https://lore.kernel.org/r/ahA2YWXYICz5rbUSQqNG4roJ8OlJzzYQX7PTiG80@cp4-web-028.plabs.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Replace list_head with hlist_head for MRP list under the bridge.
There is no need for a circular list when a linear list will work.
This will also decrease the size of 'struct net_bridge'.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Link: https://lore.kernel.org/r/20201106215049.1448185-1-horatiu.vultur@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
One use case of PACKET_FANOUT is lockless reception with one socket
per CPU. 256 is a practical limit on increasingly many machines.
Increase PACKET_FANOUT_MAX to 64K. Expand setsockopt PACKET_FANOUT to
take an extra argument max_num_members. Also explicitly define a
fanout_args struct, instead of implicitly casting to an integer. This
documents the API and simplifies the control flow.
If max_num_members is not specified or is set to 0, then 256 is used,
same as before.
Signed-off-by: Tanner Love <tannerlove@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jianlin reports that a bridged IPv6 VXLAN endpoint, carrying IPv6
packets over a link with a PMTU estimation of exactly 1350 bytes,
won't trigger ICMPv6 Packet Too Big replies when the encapsulated
datagrams exceed said PMTU value. VXLAN over IPv6 adds 70 bytes of
overhead, so an ICMPv6 reply indicating 1280 bytes as inner MTU
would be legitimate and expected.
This comes from an off-by-one error I introduced in checks added
as part of commit 4cb47a8644 ("tunnels: PMTU discovery support
for directly bridged IP packets"), whose purpose was to prevent
sending ICMPv6 Packet Too Big messages with an MTU lower than the
smallest permissible IPv6 link MTU, i.e. 1280 bytes.
In iptunnel_pmtud_check_icmpv6(), avoid triggering a reply only if
the advertised MTU would be less than, and not equal to, 1280 bytes.
Also fix the analogous comparison for IPv4, that is, skip the ICMP
reply only if the resulting MTU is strictly less than 576 bytes.
This becomes apparent while running the net/pmtu.sh bridged VXLAN
or GENEVE selftests with adjusted lower-link MTU values. Using
e.g. GENEVE, setting ll_mtu to the values reported below, in the
test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception() test
function, we can see failures on the following tests:
test | ll_mtu
-------------------------------|--------
pmtu_ipv4_br_geneve4_exception | 626
pmtu_ipv6_br_geneve4_exception | 1330
pmtu_ipv6_br_geneve6_exception | 1350
owing to the different tunneling overheads implied by the
corresponding configurations.
Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: 4cb47a8644 ("tunnels: PMTU discovery support for directly bridged IP packets")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Link: https://lore.kernel.org/r/4f5fc2f33bfdf8409549fafd4f952b008bf04d63.1604681709.git.sbrivio@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When udp_memory_allocated is at the limit, __udp_enqueue_schedule_skb
will return a -ENOBUFS, and skb will be dropped in __udp_queue_rcv_skb
without any counters being done. It's hard to find out what happened
once this happen.
So we introduce a UDP_MIB_MEMERRORS to do this job. Well, this change
looks friendly to the existing users, such as netstat:
$ netstat -u -s
Udp:
0 packets received
639 packets to unknown port received.
158689 packet receive errors
180022 packets sent
RcvbufErrors: 20930
MemErrors: 137759
UdpLite:
IpExt:
InOctets: 257426235
OutOctets: 257460598
InNoECTPkts: 181177
v2:
- Fix some alignment problems
Signed-off-by: Menglong Dong <dong.menglong@zte.com.cn>
Link: https://lore.kernel.org/r/1604627354-43207-1-git-send-email-dong.menglong@zte.com.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Due to the legacy usage of hard_header_len for SIT tunnels while
already using infrastructure from net/ipv4/ip_tunnel.c the
calculation of the path MTU in tnl_update_pmtu is incorrect.
This leads to unnecessary creation of MTU exceptions for any
flow going over a SIT tunnel.
As SIT tunnels do not have a header themsevles other than their
transport (L3, L2) headers we're leaving hard_header_len set to zero
as tnl_update_pmtu is already taking care of the transport headers
sizes.
This will also help avoiding unnecessary IPv6 GC runs and spinlock
contention seen when using SIT tunnels and for more than
net.ipv6.route.gc_thresh flows.
Fixes: c544193214 ("GRE: Refactor GRE tunneling code.")
Signed-off-by: Oliver Herms <oliver.peter.herms@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20201103104133.GA1573211@tws
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
refactoring.
-----BEGIN PGP SIGNATURE-----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=bpPt
-----END PGP SIGNATURE-----
Merge tag 'nfsd-5.10-1' of git://linux-nfs.org/~bfields/linux
Pull nfsd fixes from Bruce Fields:
"This is mainly server-to-server copy and fallout from Chuck's 5.10 rpc
refactoring"
* tag 'nfsd-5.10-1' of git://linux-nfs.org/~bfields/linux:
net/sunrpc: fix useless comparison in proc_do_xprt()
net/sunrpc: return 0 on attempt to write to "transports"
NFSD: fix missing refcount in nfsd4_copy by nfsd4_do_async_copy
NFSD: Fix use-after-free warning when doing inter-server copy
NFSD: MKNOD should return NFSERR_BADTYPE instead of NFSERR_INVAL
SUNRPC: Fix general protection fault in trace_rpc_xdr_overflow()
NFSD: NFSv3 PATHCONF Reply is improperly formed
A different wait queue was used when removing ctrl_wait than when adding
it. This effectively made the remove operation without locking compared
to other operations on the wait queue ctrl_wait was part of. This caused
issues like below where dead000000000100 is LIST_POISON1 and
dead000000000200 is LIST_POISON2.
list_add corruption. next->prev should be prev (ffffffc1b0a33a08), \
but was dead000000000200. (next=ffffffc03ac77de0).
------------[ cut here ]------------
CPU: 3 PID: 2138 Comm: bluetoothd Tainted: G O 4.4.238+ #9
...
---[ end trace 0adc2158f0646eac ]---
Call trace:
[<ffffffc000443f78>] __list_add+0x38/0xb0
[<ffffffc0000f0d04>] add_wait_queue+0x4c/0x68
[<ffffffc00020eecc>] __pollwait+0xec/0x100
[<ffffffc000d1556c>] bt_sock_poll+0x74/0x200
[<ffffffc000bdb8a8>] sock_poll+0x110/0x128
[<ffffffc000210378>] do_sys_poll+0x220/0x480
[<ffffffc0002106f0>] SyS_poll+0x80/0x138
[<ffffffc00008510c>] __sys_trace_return+0x0/0x4
Unable to handle kernel paging request at virtual address dead000000000100
...
CPU: 4 PID: 5387 Comm: kworker/u15:3 Tainted: G W O 4.4.238+ #9
...
Call trace:
[<ffffffc0000f079c>] __wake_up_common+0x7c/0xa8
[<ffffffc0000f0818>] __wake_up+0x50/0x70
[<ffffffc000be11b0>] sock_def_wakeup+0x58/0x60
[<ffffffc000de5e10>] l2cap_sock_teardown_cb+0x200/0x224
[<ffffffc000d3f2ac>] l2cap_chan_del+0xa4/0x298
[<ffffffc000d45ea0>] l2cap_conn_del+0x118/0x198
[<ffffffc000d45f8c>] l2cap_disconn_cfm+0x6c/0x78
[<ffffffc000d29934>] hci_event_packet+0x564/0x2e30
[<ffffffc000d19b0c>] hci_rx_work+0x10c/0x360
[<ffffffc0000c2218>] process_one_work+0x268/0x460
[<ffffffc0000c2678>] worker_thread+0x268/0x480
[<ffffffc0000c94e0>] kthread+0x118/0x128
[<ffffffc000085070>] ret_from_fork+0x10/0x20
---[ end trace 0adc2158f0646ead ]---
Signed-off-by: Ole Bjørn Midtbø <omidtbo@cisco.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Avoid multiple attempts to create the debugfs entry, force_bredr_smp,
by moving it from the SMP registration to the BR/EDR controller init
section. hci_debugfs_create_bredr is only called when HCI_SETUP and
HCI_CONFIG is not set.
Signed-off-by: Claire Chang <tientzu@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Reviewed-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
When adding device to white list the device is added to resolving list
also. It has to be added only when HCI_ENABLE_LL_PRIVACY flag is set.
HCI_ENABLE_LL_PRIVACY flag has to be tested before adding/deleting devices
to resolving list. use_ll_privacy macro is used only to check if controller
supports LL_Privacy.
https://bugzilla.kernel.org/show_bug.cgi?id=209745
Fixes: 0eee35bdfa ("Bluetooth: Update resolving list when updating whitelist")
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
When an LE connection request is made, advertising is disabled and never
resumed. When a client has an active advertisement, this is disruptive.
This change adds resume logic for client-configured (non-directed)
advertisements after the connection attempt.
The patch was tested by registering an advertisement, initiating an LE
connection from a remote peer, and verifying that the advertisement is
re-activated after the connection is established. This is performed on
Hatch and Kukui Chromebooks.
Signed-off-by: Daniel Winkler <danielwinkler@google.com>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
AMP_MGR is getting derefernced in hci_phy_link_complete_evt(), when called
from hci_event_packet() and there is a possibility, that hcon->amp_mgr may
not be found when accessing after initialization of hcon.
- net/bluetooth/hci_event.c:4945
The bug seems to get triggered in this line:
bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
Fix it by adding a NULL check for the hcon->amp_mgr before checking the ev-status.
Fixes: d5e911928b ("Bluetooth: AMP: Process Physical Link Complete evt")
Reported-and-tested-by: syzbot+0bef568258653cff272f@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=0bef568258653cff272f
Signed-off-by: Anmol Karn <anmol.karan123@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
32-bit to 64-bit messages translator zerofies needed paddings in the
translation, the rest is the actual payload.
Don't allocate zero pages as they are not needed.
Fixes: 5106f4a8ac ("xfrm/compat: Add 32=>64-bit messages translator")
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
32-bit messages translated by xfrm_compat can have attributes attached.
For all, but XFRMA_SA, XFRMA_POLICY the size of payload is the same
in 32-bit UABI and 64-bit UABI. For XFRMA_SA (struct xfrm_usersa_info)
and XFRMA_POLICY (struct xfrm_userpolicy_info) it's only tail-padding
that is present in 64-bit payload, but not in 32-bit.
The proper size for destination nlattr is already calculated by
xfrm_user_rcv_calculate_len64() and allocated with kvmalloc().
xfrm_attr_cpy32() copies 32-bit copy_len into 64-bit attribute
translated payload, zero-filling possible padding for SA/POLICY.
Due to a typo, *pos already has 64-bit payload size, in a result next
memset(0) is called on the memory after the translated attribute, not on
the tail-padding of it.
Fixes: 5106f4a8ac ("xfrm/compat: Add 32=>64-bit messages translator")
Reported-by: syzbot+c43831072e7df506a646@syzkaller.appspotmail.com
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
xfrm_xlate32() translates 64-bit message provided by kernel to be sent
for 32-bit listener (acknowledge or monitor). Translator code doesn't
expect XFRMA_UNSPEC attribute as it doesn't know its payload.
Kernel never attaches such attribute, but a user can.
I've searched if any opensource does it and the answer is no.
Nothing on github and google finds only tfcproject that has such code
commented-out.
What will happen if a user sends a netlink message with XFRMA_UNSPEC
attribute? Ipsec code ignores this attribute. But if there is a
monitor-process or 32-bit user requested ack - kernel will try to
translate such message and will hit WARN_ONCE() in xfrm_xlate64_attr().
Deal with XFRMA_UNSPEC by copying the attribute payload with
xfrm_nla_cpy(). In result, the default switch-case in xfrm_xlate64_attr()
becomes an unused code. Leave those 3 lines in case a new xfrm attribute
will be added.
Fixes: 5461fc0c8d ("xfrm/compat: Add 64=>32-bit messages translator")
Reported-by: syzbot+a7e701c8385bd8543074@syzkaller.appspotmail.com
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
In the original code, the "if (*lenp < 0)" check didn't work because
"*lenp" is unsigned. Fortunately, the memory_read_from_buffer() call
will never fail in this context so it doesn't affect runtime.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Acked-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Acked-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alexei Starovoitov says:
====================
pull-request: bpf 2020-11-06
1) Pre-allocated per-cpu hashmap needs to zero-fill reused element, from David.
2) Tighten bpf_lsm function check, from KP.
3) Fix bpftool attaching to flow dissector, from Lorenz.
4) Use -fno-gcse for the whole kernel/bpf/core.c instead of function attribute, from Ard.
* git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Update verification logic for LSM programs
bpf: Zero-fill re-used per-cpu map element
bpf: BPF_PRELOAD depends on BPF_SYSCALL
tools/bpftool: Fix attaching flow dissector
libbpf: Fix possible use after free in xsk_socket__delete
libbpf: Fix null dereference in xsk_socket__delete
libbpf, hashmap: Fix undefined behavior in hash_bits
bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE
tools, bpftool: Remove two unused variables.
tools, bpftool: Avoid array index warnings.
xsk: Fix possible memory leak at socket close
bpf: Add struct bpf_redir_neigh forward declaration to BPF helper defs
samples/bpf: Set rlimit for memlock to infinity in all samples
bpf: Fix -Wshadow warnings
selftest/bpf: Fix profiler test using CO-RE relocation for enums
====================
Link: https://lore.kernel.org/r/20201106221759.24143-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
You can't write to this file because the permissions are 0444. But
it sort of looked like you could do a write and it would result in
a read. Then it looked like proc_sys_call_handler() just ignored
it. Which is confusing. It's more clear if the "write" just
returns zero.
Also, the "lenp" pointer is never NULL so that check can be removed.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
and netfilter subtrees.
Current release - bugs in new features:
- can: isotp: isotp_rcv_cf(): enable RX timeout handling in
listen-only mode
Previous release - regressions:
- mac80211:
- don't require VHT elements for HE on 2.4 GHz
- fix regression where EAPOL frames were sent in plaintext
- netfilter:
- ipset: Update byte and packet counters regardless of whether
they match
- ip_tunnel: fix over-mtu packet send by allowing fragmenting even
if inner packet has IP_DF (don't fragment) set in its header
(when TUNNEL_DONT_FRAGMENT flag is not set on the tunnel dev)
- net: fec: fix MDIO probing for some FEC hardware blocks
- ip6_tunnel: set inner ipproto before ip6_tnl_encap to un-break
gso support
- sctp: Fix COMM_LOST/CANT_STR_ASSOC err reporting on big-endian
platforms, sparse-related fix used the wrong integer size
Previous release - always broken:
- netfilter: use actual socket sk rather than skb sk when routing
harder
- r8169: work around short packet hw bug on RTL8125 by padding frames
- net: ethernet: ti: cpsw: disable PTPv1 hw timestamping
advertisement, the hardware does not support it
- chelsio/chtls: fix always leaking ctrl_skb and another leak caused
by a race condition
- fix drivers incorrectly writing into skbs on TX:
- cadence: force nonlinear buffers to be cloned
- gianfar: Account for Tx PTP timestamp in the skb headroom
- gianfar: Replace skb_realloc_headroom with skb_cow_head for PTP
- can: flexcan:
- remove FLEXCAN_QUIRK_DISABLE_MECR quirk for LS1021A
- add ECC initialization for VF610 and LX2160A
- flexcan_remove(): disable wakeup completely
- can: fix packet echo functionality:
- peak_canfd: fix echo management when loopback is on
- make sure skbs are not freed in IRQ context in case they need
to be dropped
- always clone the skbs to make sure they have a reference on
the socket, and prevent it from disappearing
- fix real payload length return value for RTR frames
- can: j1939: return failure on bind if netdev is down, rather than
waiting indefinitely
Misc:
- IPv6: reply ICMP error if the first fragment don't include all
headers to improve compliance with RFC 8200
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAl+kTDcACgkQMUZtbf5S
IrtC9A//f9rwNFI7sRaz9FYi6ljtWY7paPxdOxy3pWRoNzbfffjTGSPheNvy1pQb
IPaLsNwRrckQNSEPTbQqlUYcjzk1W74ffvq0sQOan4kNKxjX3uf78E6RuWARJsRC
dLqfcJctO6bFi6sEMwIFZ2tLOO5lUIA+Pd0GbjhSdObWzl3uqJ26v7wC6vVk29vS
116Mmhe8/TDVtCOzwlZnBPHqBJkTAirB+MAEX4Sp6FB9YirlcNZbWyHX5L6ejGqC
WQVjU2tPBBugeo0j72tc+y0mD3iK0aLcPL+dk0EQQYHRDMVTebl+gxNPUXCo9Out
HGe5z4e4qrR4Rx1W6MQ3pKwTYuCdwKjMRGd72JAi428/l4NN3y9W/HkI2Zuppd2l
7ifURkNQllYjGCSoHBviJbajyFBeA1nkFJgMSJiRs4T167K3zTbsyjNnfa4LnsvS
B3SrYMGqIH+oR20R9EoV8prVX+Alj1hh/jX02J8zsCcHmBqF2yZi17NarVAWoarm
v/AAqehlP+D1vjAmbCG9DeborrjaNi+v6zFTKK6ZadvLXRJX/N+wEPIpG4KjiK8W
DWKIVlee0R+kgCXE1n9AuZaZLWb7VwrAjkG1Pmfi3vkZhWeAhOW4X98ehhi/hVR/
Gq+e48ZECW5yuOA1q4hbsCYkGr2qAn/LPbsXxhEmW8qwkJHZYkI=
=5R2w
-----END PGP SIGNATURE-----
Merge tag 'net-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes for 5.10-rc3, including fixes from wireless, can, and
netfilter subtrees.
Current merge window - bugs in new features:
- can: isotp: isotp_rcv_cf(): enable RX timeout handling in
listen-only mode
Previous releases - regressions:
- mac80211:
- don't require VHT elements for HE on 2.4 GHz
- fix regression where EAPOL frames were sent in plaintext
- netfilter:
- ipset: Update byte and packet counters regardless of whether
they match
- ip_tunnel: fix over-mtu packet send by allowing fragmenting even if
inner packet has IP_DF (don't fragment) set in its header (when
TUNNEL_DONT_FRAGMENT flag is not set on the tunnel dev)
- net: fec: fix MDIO probing for some FEC hardware blocks
- ip6_tunnel: set inner ipproto before ip6_tnl_encap to un-break gso
support
- sctp: Fix COMM_LOST/CANT_STR_ASSOC err reporting on big-endian
platforms, sparse-related fix used the wrong integer size
Previous releases - always broken:
- netfilter: use actual socket sk rather than skb sk when routing
harder
- r8169: work around short packet hw bug on RTL8125 by padding frames
- net: ethernet: ti: cpsw: disable PTPv1 hw timestamping
advertisement, the hardware does not support it
- chelsio/chtls: fix always leaking ctrl_skb and another leak caused
by a race condition
- fix drivers incorrectly writing into skbs on TX:
- cadence: force nonlinear buffers to be cloned
- gianfar: Account for Tx PTP timestamp in the skb headroom
- gianfar: Replace skb_realloc_headroom with skb_cow_head for PTP
- can: flexcan:
- remove FLEXCAN_QUIRK_DISABLE_MECR quirk for LS1021A
- add ECC initialization for VF610 and LX2160A
- flexcan_remove(): disable wakeup completely
- can: fix packet echo functionality:
- peak_canfd: fix echo management when loopback is on
- make sure skbs are not freed in IRQ context in case they need to
be dropped
- always clone the skbs to make sure they have a reference on the
socket, and prevent it from disappearing
- fix real payload length return value for RTR frames
- can: j1939: return failure on bind if netdev is down, rather than
waiting indefinitely
Misc:
- IPv6: reply ICMP error if the first fragment don't include all
headers to improve compliance with RFC 8200"
* tag 'net-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (66 commits)
ionic: check port ptr before use
r8169: work around short packet hw bug on RTL8125
net: openvswitch: silence suspicious RCU usage warning
chelsio/chtls: fix always leaking ctrl_skb
chelsio/chtls: fix memory leaks caused by a race
can: flexcan: flexcan_remove(): disable wakeup completely
can: flexcan: add ECC initialization for VF610
can: flexcan: add ECC initialization for LX2160A
can: flexcan: remove FLEXCAN_QUIRK_DISABLE_MECR quirk for LS1021A
can: mcp251xfd: remove unneeded break
can: mcp251xfd: mcp251xfd_regmap_nocrc_read(): fix semicolon.cocci warnings
can: mcp251xfd: mcp251xfd_regmap_crc_read(): increase severity of CRC read error messages
can: peak_canfd: pucan_handle_can_rx(): fix echo management when loopback is on
can: peak_usb: peak_usb_get_ts_time(): fix timestamp wrapping
can: peak_usb: add range checking in decode operations
can: xilinx_can: handle failure cases of pm_runtime_get_sync
can: ti_hecc: ti_hecc_probe(): add missed clk_disable_unprepare() in error path
can: isotp: padlen(): make const array static, makes object smaller
can: isotp: isotp_rcv_cf(): enable RX timeout handling in listen-only mode
can: isotp: Explain PDU in CAN_ISOTP help text
...
Remove in-kernel route notifications when the configuration of their
nexthop changes.
These notifications are unnecessary because the route still uses the
same nexthop ID. A separate notification for the nexthop change itself
is now sent in the nexthop notification chain.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When registering a new notifier to the nexthop notification chain,
replay all the existing nexthops to the new notifier so that it will
have a complete picture of the available nexthops.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This will be used by the next patch which extends the function to replay
all the existing nexthops to the notifier block being registered.
Device drivers will be able to pass extack to the function since it is
passed to them upon reload from devlink.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When a single nexthop is deleted, the configuration of all the groups
using the nexthop is effectively modified. In this case, emit a
notification in the nexthop notification chain for each modified group
so that listeners would not need to keep track of which nexthops are
member in which groups.
In the rare cases where the notification fails, emit an error to the
kernel log. This is done by allocating extack on the stack and printing
the error logged by the listener that rejected the notification.
Changes since RFC:
* Allocate extack on the stack
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When a single nexthop is replaced, the configuration of all the groups
using the nexthop is effectively modified. In this case, emit a
notification in the nexthop notification chain for each modified group
so that listeners would not need to keep track of which nexthops are
member in which groups.
The notification can only be emitted after the new configuration (i.e.,
'struct nh_info') is pointed at by the old shell (i.e., 'struct
nexthop'). Before that the configuration of the nexthop groups is still
the same as before the replacement.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The notification is emitted after all the validation checks were
performed, but before the new configuration (i.e., 'struct nh_info') is
pointed at by the old shell (i.e., 'struct nexthop'). This prevents the
need to perform rollback in case the notification is vetoed.
The next patch will also emit a replace notification for all the nexthop
groups in which the nexthop is used.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Emit a notification in the nexthop notification chain when an existing
nexthop group is replaced.
The notification is emitted after all the validation checks were
performed, but before the new configuration (i.e., 'struct nh_grp') is
pointed at by the old shell (i.e., 'struct nexthop'). This prevents the
need to perform rollback in case the notification is vetoed.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Emit a notification in the nexthop notification chain when a new nexthop
is added (not replaced). The nexthop can either be a new group or a
single nexthop.
The notification is sent after the nexthop is inserted into the
red-black tree, as listeners might need to callback into the nexthop
code with the nexthop ID in order to mark the nexthop as offloaded.
A 'REPLACE' notification is emitted instead of 'ADD' as the distinction
between the two is not important for in-kernel listeners. In case the
listener is not familiar with the encoded nexthop ID, it can simply
treat it as a new one. This is also consistent with the route offload
API.
Changes since RFC:
* Reword commit message
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a function that can be called by device drivers to set "offload" or
"trap" indication on nexthops following nexthop notifications.
Changes since RFC:
* s/nexthop_hw_flags_set/nexthop_set_hw_flags/
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The flag indicates to user space that the nexthop is not programmed to
forward packets in hardware, but rather to trap them to the CPU. This is
needed, for example, when the MAC of the nexthop neighbour is not
resolved and packets should reach the CPU to trigger neighbour
resolution.
The flag will be used in subsequent patches by netdevsim to test nexthop
objects programming to device drivers and in the future by mlxsw as
well.
Changes since RFC:
* Reword commit message
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Convert the sole listener of the nexthop notification chain (the VXLAN
driver) to the new notification info.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Prepare the new notification information so that it could be passed to
listeners in the new patch.
Changes since RFC:
* Add a blank line in __nh_notifier_single_info_init()
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The next patch will add extack to the notification info. This allows
listeners to veto notifications and communicate the reason to user space.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Some drivers use skb->priority to determine on which queue to send
a frame. An example is mt76x2u (this was tested on an AWUS036ACM).
This means these drivers currently do not adhere to the DONT_REORDER
flag. To fix this, we do not set skb->priority based on the QoS TID
of injected frames when the DONT_REORDER flag is set.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201104061823.197407-5-Mathy.Vanhoef@kuleuven.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently ieee80211_set_qos_hdr sets the QoS TID of all frames based
on the value assigned to skb->priority. This means it will also
overwrite the QoS TID of injected frames. The commit 753ffad3d6
("mac80211: fix TID field in monitor mode transmit") prevented
injected frames from being modified because of this by setting
skb->priority to the TID of the injected frame, which assured the
QoS TID will not be changed to a different value. Unfortunately,
this workaround complicates the handling of injected frames because
we can't set skb->priority without affecting the TID value in the
QoS field of injected frames.
To avoid this, and to simplify the next patch, detect if a frame is
injected in ieee80211_set_qos_hdr and if so do not change its QoS
field.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201104061823.197407-4-Mathy.Vanhoef@kuleuven.be
[fix typos in commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When the Tx control flag is set to prevent frame reordering, send
all frames that have this flag set on the same queue. This assures
that frames that have this flag set are not reordered relative to
other frames that have this flag set.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201104061823.197407-3-Mathy.Vanhoef@kuleuven.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a new radiotap flag to indicate injected frames must not be
reordered relative to other frames that also have this flag set,
independent of priority field values in the transmitted frame.
Parse this radiotap flag and define and set a corresponding Tx
control flag. Note that this flag has recently been standardized
as part of an update to radiotap.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201104061823.197407-2-Mathy.Vanhoef@kuleuven.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently he_support is set only for AP mode. Storing this
information for mesh BSS as well helps driver to determine
HE support. Also save HE operation element params in BSS
conf so that drivers can access this for any configurations
instead of having to parse the beacon to fetch that info.
Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Link: https://lore.kernel.org/r/20201020183111.25458-2-pradeepc@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
While adding HE MCS beacon tx rate support, it is observed that legacy
beacon tx rate in VHT hwsim test suite is failed. Whenever the
application doesn't explicitly set VHT/MCS rate attribute in fixed rate
command, by default all HE MCS masks are enabled in cfg80211. In beacon
fixed rate, more than one rate mask is not allowed. Fix that by not
setting all rate mask by default in case of beacon tx rate.
Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
Link: https://lore.kernel.org/r/1602879327-29488-1-git-send-email-rmanohar@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The for-loop iterates with a u8 loop counter and compares this
with the loop upper limit of request->n_ssids which is an int type.
There is a potential infinite loop if n_ssids is larger than the
u8 loop counter, so fix this by making the loop counter an int.
Addresses-Coverity: ("Infinite loop")
Fixes: c8cb5b854b ("nl80211/cfg80211: support 6 GHz scanning")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20201029222407.390218-1-colin.king@canonical.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Drivers supporting 4096-QAM rates as a vendor extension in HE mode need
to update the correct rate info to userspace while using 4096-QAM (MCS12
and MCS13) in HE mode. Add support to calculate bitrates of HE-MCS12 and
HE-MCS13 which represent the 4096-QAM modulation schemes. The MCS12 and
MCS13 bitrates are defined in IEEE P802.11be/D0.1.
In addition, scale up the bitrates by 3*2048 in order to accommodate
calculations for the new MCS12 and MCS13 rates without losing fraction
values.
Signed-off-by: Vamsi Krishna <vamsin@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20201029183457.7005-1-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add support to configure SAE PWE preference from userspace to drivers in
both AP and STA modes. This is needed for cases where the driver takes
care of Authentication frame processing (SME in the driver) so that
correct enforcement of the acceptable PWE derivation mechanism can be
performed.
The userspace applications can pass the sae_pwe value using the
NL80211_ATTR_SAE_PWE attribute in the NL80211_CMD_CONNECT and
NL80211_CMD_START_AP commands to the driver. This allows selection
between the hunting-and-pecking loop and hash-to-element options for PWE
derivation. For backwards compatibility, this new attribute is optional
and if not included, the driver is notified of the value being
unspecified.
Signed-off-by: Rohan Dutta <drohan@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20201027100910.22283-1-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Replace commas with semicolons. Commas introduce unnecessary
variability in the code structure and are hard to see. What is done
is essentially described by the following Coccinelle semantic patch
(http://coccinelle.lip6.fr/):
// <smpl>
@@ expression e1,e2; @@
e1
-,
+;
e2
... when any
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1602412498-32025-3-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
inet(6)_skb_parm was removed from sctp_input_cb by Commit a1dd2cf2f1
("sctp: allow changing transport encap_port by peer packets"), as it
thought sctp_input_cb->header is not used any more in SCTP.
syzbot reported a crash:
[ ] BUG: KASAN: use-after-free in decode_session6+0xe7c/0x1580
[ ]
[ ] Call Trace:
[ ] <IRQ>
[ ] dump_stack+0x107/0x163
[ ] kasan_report.cold+0x1f/0x37
[ ] decode_session6+0xe7c/0x1580
[ ] __xfrm_policy_check+0x2fa/0x2850
[ ] sctp_rcv+0x12b0/0x2e30
[ ] sctp6_rcv+0x22/0x40
[ ] ip6_protocol_deliver_rcu+0x2e8/0x1680
[ ] ip6_input_finish+0x7f/0x160
[ ] ip6_input+0x9c/0xd0
[ ] ipv6_rcv+0x28e/0x3c0
It was caused by sctp_input_cb->header/IP6CB(skb) still used in sctp rx
path decode_session6() but some members overwritten by sctp6_rcv().
This patch is to fix it by bring inet(6)_skb_parm back to sctp_input_cb
and not overwriting it in sctp4/6_rcv() and sctp_udp_rcv().
Reported-by: syzbot+5be8aebb1b7dfa90ef31@syzkaller.appspotmail.com
Fixes: a1dd2cf2f1 ("sctp: allow changing transport encap_port by peer packets")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Link: https://lore.kernel.org/r/136c1a7a419341487c504be6d1996928d9d16e02.1604472932.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Some switches rely on unique pvids to ensure port separation in
standalone mode, because they don't have a port forwarding matrix
configurable in hardware. So, setups like a group of 2 uppers with the
same VLAN, swp0.100 and swp1.100, will cause traffic tagged with VLAN
100 to be autonomously forwarded between these switch ports, in spite
of there being no bridge between swp0 and swp1.
These drivers need to prevent this from happening. They need to have
VLAN filtering enabled in standalone mode (so they'll drop frames tagged
with unknown VLANs) and they can only accept an 8021q upper on a port as
long as it isn't installed on any other port too. So give them the
chance to veto bad user requests.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
[Kurt: Pass info instead of ptr]
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The Hirschmann Hellcreek TSN switches have a special tagging protocol for frames
exchanged between the CPU port and the master interface. The format is a one
byte trailer indicating the destination or origin port.
It's quite similar to the Micrel KSZ tagging. That's why the implementation is
based on that code.
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Allow user to request action terse dump with new flag value
TCA_FLAG_TERSE_DUMP. Only output essential action info in terse dump (kind,
stats, index and cookie, if set by the user when creating the action). This
is different from filter terse dump where index is excluded (filter can be
identified by its own handle).
Move tcf_action_dump_terse() function to the beginning of source file in
order to call it from tcf_dump_walker().
Signed-off-by: Vlad Buslov <vlad@buslov.dev>
Suggested-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://lore.kernel.org/r/20201102201243.287486-1-vlad@buslov.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pablo Neira Ayuso says:
====================
Netfilter updates for net-next
1) Move existing bridge packet reject infra to nf_reject_{ipv4,ipv6}.c
from Jose M. Guisado.
2) Consolidate nft_reject_inet initialization and dump, also from Jose.
3) Add the netdev reject action, from Jose.
4) Allow to combine the exist flag and the destroy command in ipset,
from Joszef Kadlecsik.
5) Expose bucket size parameter for hashtables, also from Jozsef.
6) Expose the init value for reproducible ipset listings, from Jozsef.
7) Use __printf attribute in nft_request_module, from Andrew Lunn.
8) Allow to use reject from the inet ingress chain.
* git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next:
netfilter: nft_reject_inet: allow to use reject from inet ingress
netfilter: nftables: Add __printf() attribute
netfilter: ipset: Expose the initval hash parameter to userspace
netfilter: ipset: Add bucketsize parameter to all hash types
netfilter: ipset: Support the -exist flag with the destroy command
netfilter: nft_reject: add reject verdict support for netdev
netfilter: nft_reject: unify reject init and dump into nft_reject
netfilter: nf_reject: add reject skbuff creation helpers
====================
Link: https://lore.kernel.org/r/20201104141149.30082-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch added a new sysctl, named add_addr_timeout, to control the
timeout value (in seconds) of the ADD_ADDR retransmission.
Suggested-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
mptcp_clean_una() will wake writers in case memory could be reclaimed.
When called from mptcp_sendmsg the wakeup code isn't needed.
Move the wakeup to a new helper and then use that from the mptcp worker.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When the TCP stack splits a packet on the write queue, the tail
half currently lose the associated skb extensions, and will not
carry the DSM on the wire.
The above does not cause functional problems and is allowed by
the RFC, but interact badly with GRO and RX coalescing, as possible
candidates for aggregation will carry different TCP options.
This change tries to improve the MPTCP behavior, propagating the
skb extensions on split.
Additionally, we must prevent the MPTCP stack from updating the
mapping after the split occur: that will both violate the RFC and
fool the reader.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The function is short and won't sleep, so this can use the _fast version.
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In addition to tcp autotuning during read, it may also increase the
receive buffer in tcp_clamp_window().
In this case, mptcp should adjust its receive buffer size as well so
it can move all pending skbs from the subflow socket to the mptcp socket.
At this time, TCP can have more skbs ready for processing than what the
mptcp receive buffer size allows.
In the mptcp case, the receive window announced is based on the free
space of the mptcp parent socket instead of the individual subflows.
Following the subflow allows mptcp to grow its receive buffer.
This is especially noticeable for loopback traffic where two skbs are
enough to fill the initial receive window.
In mptcp_data_ready() we do not hold the mptcp socket lock, so modifying
mptcp_sk->sk_rcvbuf is racy. Do it when moving skbs from subflow to
mptcp socket, both sockets are locked in this case.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAl+hzPwTHG1rbEBwZW5n
dXRyb25peC5kZQAKCRCpyVqK+u3vqU8YB/9PBALnpZFDSyOE/8rKoBoqA2uPfj2i
Yplu98jkFqhnb5I1KFPCNJiTQd+/aAzM2LzeGHVOBMIF6scPUclC12k1q4fdLtX0
6YMZ38w2I2hq8z1QIgOYo7jQ34NeonNt7T5CHEeBA7xXGnlo/WYDNDE0cruPnPRZ
eFqM5f1/PVKKh4gFVTAqICC2ZMefL4rgAkFgFXj2rfiYr115OEGAwCav5Ys31p/y
MI5SfQmNkfkE8HswMNBDQZ+8V5qkKvarHXwUcRfgUqkpqHQjzcOIJnCDh/ngIh50
imwxHaCerXvEj8MBUcF2fZV7w6QPTFIV3TQ0AiUjuVUE3HPuR+JPvSl4
=B3CC
-----END PGP SIGNATURE-----
Merge tag 'linux-can-fixes-for-5.10-20201103' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2020-11-03
The first two patches are by Oleksij Rempel and they add a generic
can-controller Device Tree yaml binding and convert the text based binding
of the flexcan driver to a yaml based binding.
Zhang Changzhong's patch fixes a remove_proc_entry warning in the AF_CAN
core.
A patch by me fixes a kfree_skb() call from IRQ context in the rx-offload
helper.
Vincent Mailhol contributes a patch to prevent a call to kfree_skb() in
hard IRQ context in can_get_echo_skb().
Oliver Hartkopp's patch fixes the length calculation for RTR CAN frames
in the __can_get_echo_skb() helper.
Oleksij Rempel's patch fixes a use-after-free that shows up with j1939 in
can_create_echo_skb().
Yegor Yefremov contributes 4 patches to enhance the j1939 documentation.
Zhang Changzhong's patch fixes a hanging task problem in j1939_sk_bind()
if the netdev is down.
Then there are three patches for the newly added CAN_ISOTP protocol. Geert
Uytterhoeven enhances the kconfig help text. Oliver Hartkopp's patch adds
missing RX timeout handling in listen-only mode and Colin Ian King's patch
decreases the generated object code by 926 bytes.
Zhang Changzhong contributes a patch for the ti_hecc driver that fixes the
error path in the probe function.
Navid Emamdoost's patch for the xilinx_can driver fixes the error handling
in case of failing pm_runtime_get_sync().
There are two patches for the peak_usb driver. Dan Carpenter adds range
checking in decode operations and Stephane Grosjean's patch fixes
a timestamp wrapping problem.
Stephane Grosjean's patch for th peak_canfd driver fixes echo management if
loopback is on.
The next three patches all target the mcp251xfd driver. The first one is
by me and it increased the severity of CRC read error messages. The kernel
test robot removes an unneeded semicolon and Tom Rix removes unneeded
break in several switch-cases.
The last 4 patches are by Joakim Zhang and target the flexcan driver,
the first three fix ECC related device specific quirks for the LS1021A,
LX2160A and the VF610 SoC. The last patch disable wakeup completely upon
driver remove.
* tag 'linux-can-fixes-for-5.10-20201103' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can: (27 commits)
can: flexcan: flexcan_remove(): disable wakeup completely
can: flexcan: add ECC initialization for VF610
can: flexcan: add ECC initialization for LX2160A
can: flexcan: remove FLEXCAN_QUIRK_DISABLE_MECR quirk for LS1021A
can: mcp251xfd: remove unneeded break
can: mcp251xfd: mcp251xfd_regmap_nocrc_read(): fix semicolon.cocci warnings
can: mcp251xfd: mcp251xfd_regmap_crc_read(): increase severity of CRC read error messages
can: peak_canfd: pucan_handle_can_rx(): fix echo management when loopback is on
can: peak_usb: peak_usb_get_ts_time(): fix timestamp wrapping
can: peak_usb: add range checking in decode operations
can: xilinx_can: handle failure cases of pm_runtime_get_sync
can: ti_hecc: ti_hecc_probe(): add missed clk_disable_unprepare() in error path
can: isotp: padlen(): make const array static, makes object smaller
can: isotp: isotp_rcv_cf(): enable RX timeout handling in listen-only mode
can: isotp: Explain PDU in CAN_ISOTP help text
can: j1939: j1939_sk_bind(): return failure if netdev is down
can: j1939: use backquotes for code samples
can: j1939: swap addr and pgn in the send example
can: j1939: fix syntax and spelling
can: j1939: rename jacd tool
...
====================
Link: https://lore.kernel.org/r/<20201103220636.972106-1-mkl@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Steffen Klassert says:
====================
1) Fix packet receiving of standard IP tunnels when the xfrm_interface
module is installed. From Xin Long.
2) Fix a race condition between spi allocating and hash list
resizing. From zhuoliang zhang.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The variable err is being initialized with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20201102121615.695196-1-colin.king@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Don't populate the const array plen on the stack but instead it static. Makes
the object code smaller by 926 bytes.
Before:
text data bss dec hex filename
26531 1943 64 28538 6f7a net/can/isotp.o
After:
text data bss dec hex filename
25509 2039 64 27612 6bdc net/can/isotp.o
(gcc version 10.2.0)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20201020154203.54711-1-colin.king@canonical.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
As reported by Thomas Wagner:
https://github.com/hartkopp/can-isotp/issues/34
the timeout handling for data frames is not enabled when the isotp socket is
used in listen-only mode (sockopt CAN_ISOTP_LISTEN_MODE). This mode is enabled
by the isotpsniffer application which therefore became inconsistend with the
strict rx timeout rules when running the isotp protocol in the operational
mode.
This patch fixes this inconsistency by moving the return condition for the
listen-only mode behind the timeout handling code.
Reported-by: Thomas Wagner <thwa1@web.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Fixes: e057dd3fc2 ("can: add ISO 15765-2:2016 transport protocol")
Link: https://github.com/hartkopp/can-isotp/issues/34
Link: https://lore.kernel.org/r/20201019120229.89326-1-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The help text for the CAN_ISOTP config symbol uses the acronym "PDU". However,
this acronym is not explained here, nor in Documentation/networking/can.rst.
Expand the acronym to make it easier for users to decide if they need to enable
the CAN_ISOTP option or not.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201013141341.28487-1-geert+renesas@glider.be
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
When a netdev down event occurs after a successful call to
j1939_sk_bind(), j1939_netdev_notify() can handle it correctly.
But if the netdev already in down state before calling j1939_sk_bind(),
j1939_sk_release() will stay in wait_event_interruptible() blocked
forever. Because in this case, j1939_netdev_notify() won't be called and
j1939_tp_txtimer() won't call j1939_session_cancel() or other function
to clear session for ENETDOWN error, this lead to mismatch of
j1939_session_get/put() and jsk->skb_pending will never decrease to
zero.
To reproduce it use following commands:
1. ip link add dev vcan0 type vcan
2. j1939acd -r 100,80-120 1122334455667788 vcan0
3. presses ctrl-c and thread will be blocked forever
This patch adds check for ndev->flags in j1939_sk_bind() to avoid this
kind of situation and return with -ENETDOWN.
Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1599460308-18770-1-git-send-email-zhangchangzhong@huawei.com
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
If can_init_proc() fail to create /proc/net/can directory, can_remove_proc()
will trigger a warning:
WARNING: CPU: 6 PID: 7133 at fs/proc/generic.c:672 remove_proc_entry+0x17b0
Kernel panic - not syncing: panic_on_warn set ...
Fix to return early from can_remove_proc() if can proc_dir does not exists.
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1594709090-3203-1-git-send-email-zhangchangzhong@huawei.com
Fixes: 8e8cda6d73 ("can: initial support for network namespaces")
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Commit 394de110a7 ("net: Added pointer check for
dst->ops->neigh_lookup in dst_neigh_lookup_skb") added a test in
dst_neigh_lookup_skb() to avoid a NULL pointer dereference. The root
cause was the MPLS forwarding code, which doesn't call skb_dst_drop()
on incoming packets. That is, if the packet is received from a
collect_md device, it has a metadata_dst attached to it that doesn't
implement any dst_ops function.
To align the MPLS behaviour with IPv4 and IPv6, let's drop the dst in
mpls_forward(). This way, dst_neigh_lookup_skb() doesn't need to test
->neigh_lookup any more. Let's keep a WARN condition though, to
document the precondition and to ease detection of such problems in the
future.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/f8c2784c13faa54469a2aac339470b1049ca6b63.1604102750.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fixes several outstanding bug reports of not being able to getattr from an
open file after an unlink. This patch cleans up transient fids on an unlink
and will search open fids on a client if it detects a dentry that appears to
have been unlinked. This search is necessary because fstat does not pass fd
information through the VFS API to the filesystem, only the dentry which for
9p has an imperfect match to fids.
Inherent in this patch is also a fix for the qid handling on create/open
which apparently wasn't being set correctly and was necessary for the search
to succeed.
A possible optimization over this fix is to include accounting of open fids
with the inode in the private data (in a similar fashion to the way we track
transient fids with dentries). This would allow a much quicker search for
a matching open fid.
(changed v9fs_fid_find_global to v9fs_fid_find_inode in comment)
Link: http://lkml.kernel.org/r/20200923141146.90046-2-jianyong.wu@arm.com
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Add KCOV remote annotations to ieee80211_iface_work() and
ieee80211_rx_list(). This will enable coverage-guided fuzzing of
mac80211 code that processes incoming 802.11 frames.
Signed-off-by: Aleksandr Nogikh <nogikh@google.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Remote KCOV coverage collection enables coverage-guided fuzzing of the
code that is not reachable during normal system call execution. It is
especially helpful for fuzzing networking subsystems, where it is
common to perform packet handling in separate work queues even for the
packets that originated directly from the user space.
Enable coverage-guided frame injection by adding kcov remote handle to
skb extensions. Default initialization in __alloc_skb and
__build_skb_around ensures that no socket buffer that was generated
during a system call will be missed.
Code that is of interest and that performs packet processing should be
annotated with kcov_remote_start()/kcov_remote_stop().
An alternative approach is to determine kcov_handle solely on the
basis of the device/interface that received the specific socket
buffer. However, in this case it would be impossible to distinguish
between packets that originated during normal background network
processes or were intentionally injected from the user space.
Signed-off-by: Aleksandr Nogikh <nogikh@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.
Cc: Per Forlin <per.forlin@axis.com>
Cc: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Oleksij Rempel <linux@rempel-privat.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.
This one is interesting, the DSA tag is 8 bytes on RX and 4 bytes on TX.
Because DSA is unaware of asymmetrical tag lengths, the overhead/needed
headroom is declared as 8 bytes and therefore 4 bytes larger than it
needs to be. If this becomes a problem, and the GSWIP driver can't be
converted to a uniform header length, we might need to make DSA aware of
separate RX/TX overhead values.
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.
Similar to the EtherType DSA tagger, the old Marvell tagger can
transform an 802.1Q header if present into a DSA tag, so there is no
headroom required in that case. But we are ensuring that it exists,
regardless (practically speaking, the headroom must be 4 bytes larger
than it needs to be).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.
Note that the VLAN code path needs a smaller extra headroom than the
regular EtherType DSA path. That isn't a problem, because this tagger
declares the larger tag length (8 bytes vs 4) as the protocol overhead,
so we are covered in both cases.
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.
Cc: DENG Qingfang <dqfext@gmail.com>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.
Cc: John Crispin <john@phrozen.org>
Cc: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The caller (dsa_slave_xmit) guarantees that the frame length is at least
ETH_ZLEN and that enough memory for tail tagging is available.
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The caller (dsa_slave_xmit) guarantees that the frame length is at least
ETH_ZLEN and that enough memory for tail tagging is available.
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
At the moment, taggers are left with the task of ensuring that the skb
headers are writable (which they aren't, if the frames were cloned for
TX timestamping, for flooding by the bridge, etc), and that there is
enough space in the skb data area for the DSA tag to be pushed.
Moreover, the life of tail taggers is even harder, because they need to
ensure that short frames have enough padding, a problem that normal
taggers don't have.
The principle of the DSA framework is that everything except for the
most intimate hardware specifics (like in this case, the actual packing
of the DSA tag bits) should be done inside the core, to avoid having
code paths that are very rarely tested.
So provide a TX reallocation procedure that should cover the known needs
of DSA today.
Note that this patch also gives the network stack a good hint about the
headroom/tailroom it's going to need. Up till now it wasn't doing that.
So the reallocation procedure should really be there only for the
exceptional cases, and for cloned packets which need to be unshared.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Christian Eggers <ceggers@arri.de> # For tail taggers only
Tested-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fix smatch warning:
net/openvswitch/meter.c:427 ovs_meter_cmd_set() warn: passing zero to 'PTR_ERR'
dp_meter_create() never returns NULL, use IS_ERR
instead of IS_ERR_OR_NULL to fix this.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Link: https://lore.kernel.org/r/20201031060153.39912-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
During TCP fast recovery, the congestion control in charge is by
default the Proportional Rate Reduction (PRR) unless the congestion
control module specified otherwise (e.g. BBR).
Previously when tcp_packets_in_flight() is below snd_ssthresh PRR
would slow start upon receiving an ACK that
1) cumulatively acknowledges retransmitted data
and
2) does not detect further lost retransmission
Such conditions indicate the repair is in good steady progress
after the first round trip of recovery. Otherwise PRR adopts the
packet conservation principle to send only the amount that was
newly delivered (indicated by this ACK).
This patch generalizes the previous design principle to include
also the newly sent data beside retransmission: as long as
the delivery is making good progress, both retransmission and
new data should be accounted to make PRR more cautious in slow
starting.
Suggested-by: Matt Mathis <mattmathis@google.com>
Suggested-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20201031013412.1973112-1-ycheng@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/ipv6/addrconf.c:2005: warning: Function parameter or member 'dev' not described in 'ipv6_dev_find'
net/ipv6/ip6_vti.c:138: warning: Function parameter or member 'ip6n' not described in 'vti6_tnl_bucket'
net/ipv6/ip6_tunnel.c:218: warning: Function parameter or member 'ip6n' not described in 'ip6_tnl_bucket'
net/ipv6/ip6_tunnel.c:238: warning: Function parameter or member 'ip6n' not described in 'ip6_tnl_link'
net/ipv6/ip6_tunnel.c:254: warning: Function parameter or member 'ip6n' not described in 'ip6_tnl_unlink'
net/ipv6/ip6_tunnel.c:427: warning: Function parameter or member 'raw' not described in 'ip6_tnl_parse_tlv_enc_lim'
net/ipv6/ip6_tunnel.c:499: warning: Function parameter or member 'skb' not described in 'ip6_tnl_err'
net/ipv6/ip6_tunnel.c:499: warning: Function parameter or member 'ipproto' not described in 'ip6_tnl_err'
net/ipv6/ip6_tunnel.c:499: warning: Function parameter or member 'opt' not described in 'ip6_tnl_err'
net/ipv6/ip6_tunnel.c:499: warning: Function parameter or member 'type' not described in 'ip6_tnl_err'
net/ipv6/ip6_tunnel.c:499: warning: Function parameter or member 'code' not described in 'ip6_tnl_err'
net/ipv6/ip6_tunnel.c:499: warning: Function parameter or member 'msg' not described in 'ip6_tnl_err'
net/ipv6/ip6_tunnel.c:499: warning: Function parameter or member 'info' not described in 'ip6_tnl_err'
net/ipv6/ip6_tunnel.c:499: warning: Function parameter or member 'offset' not described in 'ip6_tnl_err'
ip6_tnl_err() is an internal function, so remove the kerneldoc. For
the others, add the missing parameters.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201031183044.1082193-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 978aa04741 ("sctp: fix some type cast warnings introduced since
very beginning")' broke err reading from sctp_arg, because it reads the
value as 32-bit integer, although the value is stored as 16-bit integer.
Later this value is passed to the userspace in 16-bit variable, thus the
user always gets 0 on big-endian platforms. Fix it by reading the __u16
field of sctp_arg union, as reading err field would produce a sparse
warning.
Fixes: 978aa04741 ("sctp: fix some type cast warnings introduced since very beginning")
Signed-off-by: Petr Malat <oss@malat.biz>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Link: https://lore.kernel.org/r/20201030132633.7045-1-oss@malat.biz
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/9p/client.c:420: warning: Function parameter or member 'c' not described in 'p9_client_cb'
net/9p/client.c:420: warning: Function parameter or member 'req' not described in 'p9_client_cb'
net/9p/client.c:420: warning: Function parameter or member 'status' not described in 'p9_client_cb'
net/9p/client.c:568: warning: Function parameter or member 'uidata' not described in 'p9_check_zc_errors'
net/9p/trans_common.c:23: warning: Function parameter or member 'nr_pages' not described in 'p9_release_pages'
net/9p/trans_common.c:23: warning: Function parameter or member 'pages' not described in 'p9_release_pages'
net/9p/trans_fd.c:132: warning: Function parameter or member 'rreq' not described in 'p9_conn'
net/9p/trans_fd.c:132: warning: Function parameter or member 'wreq' not described in 'p9_conn'
net/9p/trans_fd.c:56: warning: Function parameter or member 'privport' not described in 'p9_fd_opts'
net/9p/trans_rdma.c:113: warning: Function parameter or member 'cqe' not described in 'p9_rdma_context'
net/9p/trans_rdma.c:129: warning: Function parameter or member 'privport' not described in 'p9_rdma_opts'
net/9p/trans_virtio.c:215: warning: Function parameter or member 'limit' not described in 'pack_sg_list_p'
net/9p/trans_virtio.c:83: warning: Function parameter or member 'chan_list' not described in 'virtio_chan'
net/9p/trans_virtio.c:83: warning: Function parameter or member 'p9_max_pages' not described in 'virtio_chan'
net/9p/trans_virtio.c:83: warning: Function parameter or member 'ring_bufs_avail' not described in 'virtio_chan'
net/9p/trans_virtio.c:83: warning: Function parameter or member 'tag' not described in 'virtio_chan'
net/9p/trans_virtio.c:83: warning: Function parameter or member 'vc_wq' not described in 'virtio_chan'
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Dominique Martinet <asmadeus@codewreck.org>
Link: https://lore.kernel.org/r/20201031182655.1082065-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* HE on 2.4 GHz
* a few issues syzbot found, but we have many more reports :-(
* a regression in nl80211-transported EAPOL frames which had
affected a number of users, from Mathy
* kernel-doc markings in mac80211, from Mauro
* a format argument in reg.c, from Ye Bin
-----BEGIN PGP SIGNATURE-----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=2AGz
-----END PGP SIGNATURE-----
Merge tag 'mac80211-for-net-2020-10-30' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
A couple of fixes, for
* HE on 2.4 GHz
* a few issues syzbot found, but we have many more reports :-(
* a regression in nl80211-transported EAPOL frames which had
affected a number of users, from Mathy
* kernel-doc markings in mac80211, from Mauro
* a format argument in reg.c, from Ye Bin
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Enhance validation to support for reject from inet ingress chains.
Note that, reject from inet ingress and netdev ingress differ.
Reject packets from inet ingress are sent through ip_local_out() since
inet reject emulates the IP layer receive path. So the reject packet
follows to classic IP output and postrouting paths.
The reject action from netdev ingress assumes the packet not yet entered
the IP layer, so the reject packet is sent through dev_queue_xmit().
Therefore, reject packets from netdev ingress do not follow the classic
IP output and postrouting paths.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
nft_request_module calls vsnprintf() using parameters passed to it.
Make the function with __printf() attribute so the compiler can check
the format and arguments.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
1) Incorrect netlink report logic in flowtable and genID.
2) Add a selftest to check that wireguard passes the right sk
to ip_route_me_harder, from Jason A. Donenfeld.
3) Pass the actual sk to ip_route_me_harder(), also from Jason.
4) Missing expression validation of updates via nft --check.
5) Update byte and packet counters regardless of whether they
match, from Stefano Brivio.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The commit cited below has changed only the functional prototype of
br_multicast_querier_exists, but forgot to do that for the stub
prototype (the one where CONFIG_BRIDGE_IGMP_SNOOPING is disabled).
Fixes: 955062b03f ("net: bridge: mcast: add support for raw L2 multicast groups")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20201101000845.190009-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The tunnel device such as vxlan, bareudp and geneve in the lwt mode set
the outer df only based TUNNEL_DONT_FRAGMENT.
And this was also the behavior for gre device before switching to use
ip_md_tunnel_xmit in commit 962924fa2b ("ip_gre: Refactor collect
metatdata mode tunnel xmit to ip_md_tunnel_xmit")
When the ip_gre in lwt mode xmit with ip_md_tunnel_xmi changed the rule and
make the discrepancy between handling of DF by different tunnels. So in the
ip_md_tunnel_xmit should follow the same rule like other tunnels.
Fixes: cfc7381b30 ("ip_tunnel: add collect_md mode to IPIP tunnel")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Link: https://lore.kernel.org/r/1604028728-31100-1-git-send-email-wenxu@ucloud.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
To allow better problem diagnosis the return codes for SMC-Dv2 are
improved by this patch. A few more CLC DECLINE codes are defined and
sent to the peer when an SMC connection cannot be established.
There are now multiple SMC variations that are offered by the client and
the server may encounter problems to initialize all of them.
Because only one diagnosis code can be sent to the client the decision
was made to send the first code that was encountered. Because the server
tries the variations in the order of importance (SMC-Dv2, SMC-D, SMC-R)
this makes sure that the diagnosis code of the most important variation
is sent.
v2: initialize rc in smc_listen_v2_check().
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Link: https://lore.kernel.org/r/20201031181938.69903-1-kgraul@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Hi Linus,
Please, pull the following patches that replace zero-length arrays with
flexible-array members.
Thanks
--
Gustavo
-----BEGIN PGP SIGNATURE-----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=vyu3
-----END PGP SIGNATURE-----
Merge tag 'flexible-array-conversions-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux
Pull more flexible-array member conversions from Gustavo A. R. Silva:
"Replace zero-length arrays with flexible-array members"
* tag 'flexible-array-conversions-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
printk: ringbuffer: Replace zero-length array with flexible-array member
net/smc: Replace zero-length array with flexible-array member
net/mlx5: Replace zero-length array with flexible-array member
mei: hw: Replace zero-length array with flexible-array member
gve: Replace zero-length array with flexible-array member
Bluetooth: btintel: Replace zero-length array with flexible-array member
scsi: target: tcmu: Replace zero-length array with flexible-array member
ima: Replace zero-length array with flexible-array member
enetc: Replace zero-length array with flexible-array member
fs: Replace zero-length array with flexible-array member
Bluetooth: Replace zero-length array with flexible-array member
params: Replace zero-length array with flexible-array member
tracepoint: Replace zero-length array with flexible-array member
platform/chrome: cros_ec_proto: Replace zero-length array with flexible-array member
platform/chrome: cros_ec_commands: Replace zero-length array with flexible-array member
mailbox: zynqmp-ipi-message: Replace zero-length array with flexible-array member
dmaengine: ti-cppi5: Replace zero-length array with flexible-array member
Based on RFC 8200, Section 4.5 Fragment Header:
- If the first fragment does not include all headers through an
Upper-Layer header, then that fragment should be discarded and
an ICMP Parameter Problem, Code 3, message should be sent to
the source of the fragment, with the Pointer field set to zero.
Checking each packet header in IPv6 fast path will have performance impact,
so I put the checking in ipv6_frag_rcv().
As the packet may be any kind of L4 protocol, I only checked some common
protocols' header length and handle others by (offset + 1) > skb->len.
Also use !(frag_off & htons(IP6_OFFSET)) to catch atomic fragments
(fragmented packet with only one fragment).
When send ICMP error message, if the 1st truncated fragment is ICMP message,
icmp6_send() will break as is_ineligible() return true. So I added a check
in is_ineligible() to let fragment packet with nexthdr ICMP but no ICMP header
return false.
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The position index in leq_seq_next is not updated when the next
entry is fetched an no more entries are available. This causes
seq_file to report the following error:
"seq_file: buggy .next function lec_seq_next [lec] did not update
position index"
Fix this by always updating the position index.
[ Note: this is an ancient 2002 bug, the sha is from the
tglx/history repo ]
Fixes 4aea2cbff417 ("[ATM]: Move lan seq_file ops to lec.c [1/3]")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20201027114925.21843-1-colin.king@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
It makes possible to reproduce exactly the same set after a save/restore.
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The parameter defines the upper limit in any hash bucket at adding new entries
from userspace - if the limit would be exceeded, ipset doubles the hash size
and rehashes. It means the set may consume more memory but gives faster
evaluation at matching in the set.
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The -exist flag was supported with the create, add and delete commands.
In order to gracefully handle the destroy command with nonexistent sets,
the -exist flag is added to destroy too.
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
In ip_set_match_extensions(), for sets with counters, we take care of
updating counters themselves by calling ip_set_update_counter(), and of
checking if the given comparison and values match, by calling
ip_set_match_counter() if needed.
However, if a given comparison on counters doesn't match the configured
values, that doesn't mean the set entry itself isn't matching.
This fix restores the behaviour we had before commit 4750005a85
("netfilter: ipset: Fix "don't update counters" mode when counters used
at the matching"), without reintroducing the issue fixed there: back
then, mtype_data_match() first updated counters in any case, and then
took care of matching on counters.
Now, if the IPSET_FLAG_SKIP_COUNTER_UPDATE flag is set,
ip_set_update_counter() will anyway skip counter updates if desired.
The issue observed is illustrated by this reproducer:
ipset create c hash:ip counters
ipset add c 192.0.2.1
iptables -I INPUT -m set --match-set c src --bytes-gt 800 -j DROP
if we now send packets from 192.0.2.1, bytes and packets counters
for the entry as shown by 'ipset list' are always zero, and, no
matter how many bytes we send, the rule will never match, because
counters themselves are not updated.
Reported-by: Mithil Mhatre <mmhatre@redhat.com>
Fixes: 4750005a85 ("netfilter: ipset: Fix "don't update counters" mode when counters used at the matching")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Adds support for reject from ingress hook in netdev family.
Both stacks ipv4 and ipv6. With reject packets supporting ICMP
and TCP RST.
This ability is required in devices that need to REJECT legitimate
clients which traffic is forwarded from the ingress hook.
Joint work with Laura Garcia.
Signed-off-by: Jose M. Guisado Gomez <guigom@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Bridge family is using the same static init and dump function as inet.
This patch removes duplicate code unifying these functions body into
nft_reject.c so they can be reused in the rest of families supporting
reject verdict.
Signed-off-by: Jose M. Guisado Gomez <guigom@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Adds reject skbuff creation helper functions to ipv4/6 nf_reject
infrastructure. Use these functions for reject verdict in bridge
family.
Can be reused by all different families that support reject and
will not inject the reject packet through ip local out.
Signed-off-by: Jose M. Guisado Gomez <guigom@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
When creating a new multicast port group, there is implicit conversion
between the __u8 state member of struct br_mdb_entry and the unsigned
char flags member of struct net_bridge_port_group. This implicit
conversion relies on the fact that MDB_PERMANENT is equal to
MDB_PG_FLAGS_PERMANENT.
Let's be more explicit and convert the state to flags manually.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20201028234815.613226-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Extend the bridge multicast control and data path to configure routes
for L2 (non-IP) multicast groups.
The uapi struct br_mdb_entry union u is extended with another variant,
mac_addr, which does not change the structure size, and which is valid
when the proto field is zero.
To be compatible with the forwarding code that is already in place,
which acts as an IGMP/MLD snooping bridge with querier capabilities, we
need to declare that for L2 MDB entries (for which there exists no such
thing as IGMP/MLD snooping/querying), that there is always a querier.
Otherwise, these entries would be flooded to all bridge ports and not
just to those that are members of the L2 multicast group.
Needless to say, only permanent L2 multicast groups can be installed on
a bridge port.
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20201028233831.610076-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch is to enable udp tunneling socks by calling
sctp_udp_sock_start() in sctp_ctrlsock_init(), and
sctp_udp_sock_stop() in sctp_ctrlsock_exit().
Also add sysctl udp_port to allow changing the listening
sock's port by users.
Wit this patch, the whole sctp over udp feature can be
enabled and used.
v1->v2:
- Also update ctl_sock udp_port in proc_sctp_do_udp_port()
where netns udp_port gets changed.
v2->v3:
- Call htons() when setting sk udp_port from netns udp_port.
v3->v4:
- Not call sctp_udp_sock_start() when new_value is 0.
- Add udp_port entry in ip-sysctl.rst.
v4->v5:
- Not call sctp_udp_sock_start/stop() in sctp_ctrlsock_init/exit().
- Improve the description of udp_port in ip-sysctl.rst.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is from Section 4 of draft-tuexen-tsvwg-sctp-udp-encaps-cons-03,
and it requires responding with an abort chunk with an error cause
when the udp source port of the received init chunk doesn't match the
encap port of the transport.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch is to add the function to make the abort chunk with
the error cause for new encapsulation port restart, defined
on Section 4.4 in draft-tuexen-tsvwg-sctp-udp-encaps-cons-03.
v1->v2:
- no change.
v2->v3:
- no need to call htons() when setting nep.cur_port/new_port.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This one basically does the similar things in sctp_v6_xmit as does for
udp4 sock in the last patch, just note that:
1. label needs to be calculated, as it's the param of
udp_tunnel6_xmit_skb().
2. The 'nocheck' param of udp_tunnel6_xmit_skb() is false, as
required by RFC.
v1->v2:
- Use sp->udp_port instead in sctp_v6_xmit(), which is more safe.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch does what the rfc6951#section-5.3 says for ipv4:
"Within the UDP header, the source port MUST be the local UDP
encapsulation port number of the SCTP stack, and the destination port
MUST be the remote UDP encapsulation port number maintained for the
association and the destination address to which the packet is sent
(see Section 5.1).
Because the SCTP packet is the UDP payload, the length of the UDP
packet MUST be the length of the SCTP packet plus the size of the UDP
header.
The SCTP checksum MUST be computed for IPv4 and IPv6, and the UDP
checksum SHOULD be computed for IPv4 and IPv6."
Some places need to be adjusted in sctp_packet_transmit():
1. For non-gso packets, when transport's encap_port is set, sctp
checksum has to be done in sctp_packet_pack(), as the outer
udp will use ip_summed = CHECKSUM_PARTIAL to do the offload
setting for checksum.
2. Delay calling dst_clone() and skb_dst_set() for non-udp packets
until sctp_v4_xmit(), as for udp packets, skb_dst_set() is not
needed before calling udp_tunnel_xmit_skb().
then in sctp_v4_xmit():
1. Go to udp_tunnel_xmit_skb() only when transport->encap_port and
net->sctp.udp_port both are set, as these are one for dst port
and another for src port.
2. For gso packet, SKB_GSO_UDP_TUNNEL_CSUM is set for gso_type, and
with this udp checksum can be done in __skb_udp_tunnel_segment()
for each segments after the sctp gso.
3. inner_mac_header and inner_transport_header are set, as these
will be needed in __skb_udp_tunnel_segment() to find the right
headers.
4. df and ttl are calculated, as these are the required params by
udp_tunnel_xmit_skb().
5. nocheck param has to be false, as "the UDP checksum SHOULD be
computed for IPv4 and IPv6", says in rfc6951#section-5.3.
v1->v2:
- Use sp->udp_port instead in sctp_v4_xmit(), which is more safe.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
sk_setup_caps() was originally called in Commit 90017accff ("sctp:
Add GSO support"), as:
"We have to refresh this in case we are xmiting to more than one
transport at a time"
This actually happens in the loop of sctp_outq_flush_transports(),
and it shouldn't be tied to gso, so move it out of gso part and
before sctp_packet_pack().
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
sctp_mtu_payload() is for calculating the frag size before making
chunks from a msg. So we should only add udphdr size to overhead
when udp socks are listening, as only then sctp can handle the
incoming sctp over udp packets and outgoing sctp over udp packets
will be possible.
Note that we can't do this according to transport->encap_port, as
different transports may be set to different values, while the
chunks were made before choosing the transport, we could not be
able to meet all rfc6951#section-5.6 recommends.
v1->v2:
- Add udp_port for sctp_sock to avoid a potential race issue, it
will be used in xmit path in the next patch.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As rfc6951#section-5.4 says:
"After finding the SCTP association (which
includes checking the verification tag), the UDP source port MUST be
stored as the encapsulation port for the destination address the SCTP
packet is received from (see Section 5.1).
When a non-encapsulated SCTP packet is received by the SCTP stack,
the encapsulation of outgoing packets belonging to the same
association and the corresponding destination address MUST be
disabled."
transport encap_port should be updated by a validated incoming packet's
udp src port.
We save the udp src port in sctp_input_cb->encap_port, and then update
the transport in two places:
1. right after vtag is verified, which is required by RFC, and this
allows the existent transports to be updated by the chunks that
can only be processed on an asoc.
2. right before processing the 'init' where the transports are added,
and this allows building a sctp over udp connection by client with
the server not knowing the remote encap port.
3. when processing ootb_pkt and creating the temporary transport for
the reply pkt.
Note that sctp_input_cb->header is removed, as it's not used any more
in sctp.
v1->v2:
- Change encap_port as __be16 for sctp_input_cb.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch is to implement:
rfc6951#section-6.1: Get or Set the Remote UDP Encapsulation Port Number
with the param of the struct:
struct sctp_udpencaps {
sctp_assoc_t sue_assoc_id;
struct sockaddr_storage sue_address;
uint16_t sue_port;
};
the encap_port of sock, assoc or transport can be changed by users,
which also means it allows the different transports of the same asoc
to have different encap_port value.
v1->v2:
- no change.
v2->v3:
- fix the endian warning when setting values between encap_port and
sue_port.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
encap_port is added as per netns/sock/assoc/transport, and the
latter one's encap_port inherits the former one's by default.
The transport's encap_port value would mostly decide if one
packet should go out with udp encapsulated or not.
This patch also allows users to set netns' encap_port by sysctl.
v1->v2:
- Change to define encap_port as __be16 for sctp_sock, asoc and
transport.
v2->v3:
- No change.
v3->v4:
- Add 'encap_port' entry in ip-sysctl.rst.
v4->v5:
- Improve the description of encap_port in ip-sysctl.rst.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As it says in rfc6951#section-5.5:
"When receiving ICMP or ICMPv6 response packets, there might not be
enough bytes in the payload to identify the SCTP association that the
SCTP packet triggering the ICMP or ICMPv6 packet belongs to. If a
received ICMP or ICMPv6 packet cannot be related to a specific SCTP
association or the verification tag cannot be verified, it MUST be
discarded silently. In particular, this means that the SCTP stack
MUST NOT rely on receiving ICMP or ICMPv6 messages. Implementation
constraints could prevent processing received ICMP or ICMPv6
messages."
ICMP or ICMPv6 packets need to be handled, and this is implemented by
udp encap sock .encap_err_lookup function.
The .encap_err_lookup function is called in __udp(6)_lib_err_encap()
to confirm this path does need to be updated. For sctp, what we can
do here is check if the corresponding asoc and transport exist.
Note that icmp packet process for sctp over udp is done by udp sock
.encap_err_lookup(), and it means for now we can't do as much as
sctp_v4/6_err() does. Also we can't do the two mappings mentioned
in rfc6951#section-5.5.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch is to add the udp6 sock part in sctp_udp_sock_start/stop().
udp_conf.use_udp6_rx_checksums is set to true, as:
"The SCTP checksum MUST be computed for IPv4 and IPv6, and the UDP
checksum SHOULD be computed for IPv4 and IPv6"
says in rfc6951#section-5.3.
v1->v2:
- Add pr_err() when fails to create udp v6 sock.
- Add #if IS_ENABLED(CONFIG_IPV6) not to create v6 sock when ipv6 is
disabled.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch is to add the functions to create/release udp4 sock,
and set the sock's encap_rcv to process the incoming udp encap
sctp packets. In sctp_udp_rcv(), as we can see, all we need to
do is fix the transport header for sctp_rcv(), then it would
implement the part of rfc6951#section-5.4:
"When an encapsulated packet is received, the UDP header is removed.
Then, the generic lookup is performed, as done by an SCTP stack
whenever a packet is received, to find the association for the
received SCTP packet"
Note that these functions will be called in the last patch of
this patchset when enabling this feature.
v1->v2:
- Add pr_err() when fails to create udp v4 sock.
v2->v3:
- Add 'select NET_UDP_TUNNEL' in sctp Kconfig.
v3->v4:
- No change.
v4->v5:
- Change to set udp_port to 0 by default.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
For the gso of sctp over udp packets, sctp_gso_segment() will be called in
skb_udp_tunnel_segment(), we need to set transport_header to sctp header.
As all the current HWs can't handle both crc checksum and udp checksum at
the same time, the crc checksum has to be done in sctp_gso_segment() by
removing the NETIF_F_SCTP_CRC flag from the features.
Meanwhile, if the HW can't do udp checksum, csum and csum_start has to be
set correctly, and udp checksum will be done in __skb_udp_tunnel_segment()
by calling gso_make_checksum().
Thanks to Paolo, Marcelo and Guillaume for helping with this one.
v1->v2:
- no change.
v2->v3:
- remove the he NETIF_F_SCTP_CRC flag from the features.
- set csum and csum_start in sctp_gso_make_checksum().
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
For some protocol's gso, like SCTP, it's using GSO_BY_FRAGS for
gso_size. When using UDP to encapsulate its packet, it will
return error in udp6_ufo_fragment() as skb->len < gso_size,
and it will never go to the gso tunnel processing.
So we should move this check after udp gso tunnel processing,
the same as udp4_ufo_fragment() does.
v1->v2:
- no change.
v2->v3:
- not do any cleanup.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There is a chance that __udp4/6_lib_lookup() returns a udp encap
sock in __udp_lib_err(), like the udp encap listening sock may
use the same port as remote encap port, in which case it should
go to __udp4/6_lib_err_encap() for more validation before
processing the icmp packet.
This patch is to check encap_type in __udp_lib_err() for the
further validation for a encap sock.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
make clang-analyzer on x86_64 defconfig caught my attention with:
net/sched/cls_api.c:2964:3: warning: Value stored to 'parent' is never read
[clang-analyzer-deadcode.DeadStores]
parent = 0;
^
net/sched/cls_api.c:2977:4: warning: Value stored to 'parent' is never read
[clang-analyzer-deadcode.DeadStores]
parent = q->handle;
^
Commit 32a4f5ecd7 ("net: sched: introduce chain object to uapi")
introduced tc_dump_chain() and this initial implementation already
contained these unneeded dead stores.
Simplify the code to make clang-analyzer happy.
As compilers will detect these unneeded assignments and optimize this
anyway, the resulting binary is identical before and after this change.
No functional change. No change in object code.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20201028113533.26160-1-lukas.bulwahn@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 931ca7ab7f ("ip*_mc_gsfget(): lift copyout of struct group_filter
into callers") adjusted the type annotations for ip6_mc_msfget() at its
declaration, but missed the type annotations at its definition.
Hence, sparse complains on ./net/ipv6/mcast.c:
mcast.c:550:5: error: symbol 'ip6_mc_msfget' redeclared with different type \
(incompatible argument 3 (different address spaces))
Make ip6_mc_msfget() annotations consistent, which also resolves this
warning from sparse:
mcast.c:607:34: warning: incorrect type in argument 1 (different address spaces)
mcast.c:607:34: expected void [noderef] __user *to
mcast.c:607:34: got struct __kernel_sockaddr_storage *p
No functional change. No change in object code.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20201028115349.6855-1-lukas.bulwahn@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
dist_queue is no longer used since commit 37922ea4a3
("tipc: permit overlapping service ranges in name table")
Acked-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Hoang Huu Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20201028032712.31009-1-hoang.h.le@dektech.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/ipv6/calipso.c:1236: warning: Excess function parameter 'reg' description in 'calipso_req_delattr'
net/ipv6/calipso.c:1236: warning: Function parameter or member 'req' not described in 'calipso_req_delattr'
net/ipv6/calipso.c:435: warning: Excess function parameter 'audit_secid' description in 'calipso_doi_remove'
net/ipv6/calipso.c:435: warning: Function parameter or member 'audit_info' not described in 'calipso_doi_remove'
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028013344.931928-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/ipv6/rpl_iptunnel.c:15: warning: cannot understand function prototype: 'struct rpl_iptunnel_encap '
The header on the file containing the author copyright message uses
kerneldoc /** opener. This confuses the parser when it gets to
struct rpl_iptunnel_encap {
struct ipv6_rpl_sr_hdr srh[0];
};
Similarly:
net//ipv6/rpl.c:10: warning: Function parameter or member 'x' not described in 'IPV6_PFXTAIL_LEN'
where IPV6_PFXTAIL_LEN is a macro definition, not a function.
Convert the header comments to a plain /* comment.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028013123.931816-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net//ipv4/tcp_lp.c:120: warning: Function parameter or member 'sk' not described in 'tcp_lp_cong_avoid'
net//ipv4/tcp_lp.c:135: warning: Function parameter or member 'sk' not described in 'tcp_lp_remote_hz_estimator'
net//ipv4/tcp_lp.c:188: warning: Function parameter or member 'sk' not described in 'tcp_lp_owd_calculator'
net//ipv4/tcp_lp.c:222: warning: Function parameter or member 'rtt' not described in 'tcp_lp_rtt_sample'
net//ipv4/tcp_lp.c:222: warning: Function parameter or member 'sk' not described in 'tcp_lp_rtt_sample'
net//ipv4/tcp_lp.c:265: warning: Function parameter or member 'sk' not described in 'tcp_lp_pkts_acked'
net//ipv4/tcp_lp.c:97: warning: Function parameter or member 'sk' not described in 'tcp_lp_init'
There are still a few kerneldoc warnings after this fix.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028012703.931632-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/dccp/ccids/ccid2.c:190: warning: Function parameter or member 'hc' not described in 'ccid2_update_used_window'
net/dccp/ccids/ccid2.c:190: warning: Function parameter or member 'new_wnd' not described in 'ccid2_update_used_window'
net/dccp/ccids/ccid2.c:360: warning: Function parameter or member 'sk' not described in 'ccid2_rtt_estimator'
net/dccp/ccids/ccid3.c:112: warning: Function parameter or member 'sk' not described in 'ccid3_hc_tx_update_x'
net/dccp/ccids/ccid3.c:159: warning: Function parameter or member 'hc' not described in 'ccid3_hc_tx_update_s'
net/dccp/ccids/ccid3.c:268: warning: Function parameter or member 'sk' not described in 'ccid3_hc_tx_send_packet'
net/dccp/ccids/ccid3.c:667: warning: Function parameter or member 'sk' not described in 'ccid3_first_li'
net/dccp/ccids/ccid3.c:85: warning: Function parameter or member 'hc' not described in 'ccid3_update_send_interval'
net/dccp/ccids/lib/loss_interval.c:85: warning: Function parameter or member 'lh' not described in 'tfrc_lh_update_i_mean'
net/dccp/ccids/lib/loss_interval.c:85: warning: Function parameter or member 'skb' not described in 'tfrc_lh_update_i_mean'
net/dccp/ccids/lib/packet_history.c:392: warning: Function parameter or member 'h' not described in 'tfrc_rx_hist_sample_rtt'
net/dccp/ccids/lib/packet_history.c:392: warning: Function parameter or member 'skb' not described in 'tfrc_rx_hist_sample_rtt'
net/dccp/feat.c:1003: warning: Function parameter or member 'dreq' not described in 'dccp_feat_server_ccid_dependencies'
net/dccp/feat.c:1040: warning: Function parameter or member 'array_len' not described in 'dccp_feat_prefer'
net/dccp/feat.c:1040: warning: Function parameter or member 'array' not described in 'dccp_feat_prefer'
net/dccp/feat.c:1040: warning: Function parameter or member 'preferred_value' not described in 'dccp_feat_prefer'
net/dccp/output.c:151: warning: Function parameter or member 'dp' not described in 'dccp_determine_ccmps'
net/dccp/output.c:242: warning: Function parameter or member 'sk' not described in 'dccp_xmit_packet'
net/dccp/output.c:305: warning: Function parameter or member 'sk' not described in 'dccp_flush_write_queue'
net/dccp/output.c:305: warning: Function parameter or member 'time_budget' not described in 'dccp_flush_write_queue'
net/dccp/output.c:378: warning: Function parameter or member 'sk' not described in 'dccp_retransmit_skb'
net/dccp/qpolicy.c:88: warning: Function parameter or member '' not described in 'dccp_qpolicy_operations'
net/dccp/qpolicy.c:88: warning: Function parameter or member '{' not described in 'dccp_qpolicy_operations'
net/dccp/qpolicy.c:88: warning: Function parameter or member 'params' not described in 'dccp_qpolicy_operations'
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028011412.931250-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net//dcb/dcbnl.c:1836: warning: Function parameter or member 'app' not described in 'dcb_getapp'
net//dcb/dcbnl.c:1836: warning: Function parameter or member 'dev' not described in 'dcb_getapp'
net//dcb/dcbnl.c:1858: warning: Function parameter or member 'dev' not described in 'dcb_setapp'
net//dcb/dcbnl.c:1858: warning: Function parameter or member 'new' not described in 'dcb_setapp'
net//dcb/dcbnl.c:1899: warning: Function parameter or member 'app' not described in 'dcb_ieee_getapp_mask'
net//dcb/dcbnl.c:1899: warning: Function parameter or member 'dev' not described in 'dcb_ieee_getapp_mask'
net//dcb/dcbnl.c:1922: warning: Function parameter or member 'dev' not described in 'dcb_ieee_setapp'
net//dcb/dcbnl.c:1922: warning: Function parameter or member 'new' not described in 'dcb_ieee_setapp'
net//dcb/dcbnl.c:1953: warning: Function parameter or member 'del' not described in 'dcb_ieee_delapp'
net//dcb/dcbnl.c:1953: warning: Function parameter or member 'dev' not described in 'dcb_ieee_delapp'
net//dcb/dcbnl.c:1986: warning: Function parameter or member 'dev' not described in 'dcb_ieee_getapp_prio_dscp_mask_map'
net//dcb/dcbnl.c:1986: warning: Function parameter or member 'p_map' not described in 'dcb_ieee_getapp_prio_dscp_mask_map'
net//dcb/dcbnl.c:2016: warning: Function parameter or member 'dev' not described in 'dcb_ieee_getapp_dscp_prio_mask_map'
net//dcb/dcbnl.c:2016: warning: Function parameter or member 'p_map' not described in 'dcb_ieee_getapp_dscp_prio_mask_map'
net//dcb/dcbnl.c:2045: warning: Function parameter or member 'dev' not described in 'dcb_ieee_getapp_default_prio_mask'
For some of these warnings, change to comments to plain comments,
since no attempt is being made to follow kerneldoc syntax.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028010913.930929-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net//nfc/core.c:1046: warning: Function parameter or member 'tx_headroom' not described in 'nfc_allocate_device'
net//nfc/core.c:1046: warning: Function parameter or member 'tx_tailroom' not described in 'nfc_allocate_device'
net//nfc/core.c:198: warning: Excess function parameter 'protocols' description in 'nfc_start_poll'
net//nfc/core.c:198: warning: Function parameter or member 'im_protocols' not described in 'nfc_start_poll'
net//nfc/core.c:198: warning: Function parameter or member 'tm_protocols' not described in 'nfc_start_poll'
net//nfc/core.c:441: warning: Function parameter or member 'mode' not described in 'nfc_deactivate_target'
net//nfc/core.c:711: warning: Function parameter or member 'dev' not described in 'nfc_alloc_send_skb'
net//nfc/core.c:711: warning: Function parameter or member 'err' not described in 'nfc_alloc_send_skb'
net//nfc/core.c:711: warning: Function parameter or member 'flags' not described in 'nfc_alloc_send_skb'
net//nfc/core.c:711: warning: Function parameter or member 'sk' not described in 'nfc_alloc_send_skb'
net//nfc/digital_core.c:470: warning: Function parameter or member 'im_protocols' not described in 'digital_start_poll'
net//nfc/digital_core.c:470: warning: Function parameter or member 'nfc_dev' not described in 'digital_start_poll'
net//nfc/digital_core.c:470: warning: Function parameter or member 'tm_protocols' not described in 'digital_start_poll'
net//nfc/nci/core.c:1119: warning: Function parameter or member 'tx_headroom' not described in 'nci_allocate_device'
net//nfc/nci/core.c:1119: warning: Function parameter or member 'tx_tailroom' not described in 'nci_allocate_device'
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028005653.930467-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/appletalk/aarp.c:68: warning: Function parameter or member 'dev' not described in 'aarp_entry'
net/appletalk/aarp.c:68: warning: Function parameter or member 'expires_at' not described in 'aarp_entry'
net/appletalk/aarp.c:68: warning: Function parameter or member 'hwaddr' not described in 'aarp_entry'
net/appletalk/aarp.c:68: warning: Function parameter or member 'last_sent' not described in 'aarp_entry'
net/appletalk/aarp.c:68: warning: Function parameter or member 'next' not described in 'aarp_entry'
net/appletalk/aarp.c:68: warning: Function parameter or member 'packet_queue' not described in 'aarp_entry'
net/appletalk/aarp.c:68: warning: Function parameter or member 'status' not described in 'aarp_entry'
net/appletalk/aarp.c:68: warning: Function parameter or member 'target_addr' not described in 'aarp_entry'
net/appletalk/aarp.c:68: warning: Function parameter or member 'xmit_count' not described in 'aarp_entry'
net/appletalk/ddp.c:1422: warning: Function parameter or member 'dev' not described in 'atalk_rcv'
net/appletalk/ddp.c:1422: warning: Function parameter or member 'orig_dev' not described in 'atalk_rcv'
net/appletalk/ddp.c:1422: warning: Function parameter or member 'pt' not described in 'atalk_rcv'
net/appletalk/ddp.c:1422: warning: Function parameter or member 'skb' not described in 'atalk_rcv'
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028005527.930388-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/netlabel/netlabel_calipso.c:376: warning: Function parameter or member 'ops' not described in 'netlbl_calipso_ops_register'
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/20201028005350.930299-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/l3mdev/l3mdev.c:249: warning: Function parameter or member 'arg' not described in 'l3mdev_fib_rule_match'
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20201028005059.930192-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/openvswitch/flow.c:303: warning: Function parameter or member 'key_vh' not described in 'parse_vlan_tag'
net/openvswitch/flow.c:303: warning: Function parameter or member 'skb' not described in 'parse_vlan_tag'
net/openvswitch/flow.c:303: warning: Function parameter or member 'untag_vlan' not described in 'parse_vlan_tag'
net/openvswitch/vport.c:122: warning: Function parameter or member 'parms' not described in 'ovs_vport_alloc'
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028004849.930094-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/llc/llc_conn.c:917: warning: Function parameter or member 'kern' not described in 'llc_sk_alloc'
net/llc/llc_conn.c:917: warning: Function parameter or member 'prot' not described in 'llc_sk_alloc'
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028004644.929997-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/tipc/netlink_compat.c: In function ‘tipc_tlv_sprintf’:
net/tipc/netlink_compat.c:137:2: warning: function ‘tipc_tlv_sprintf’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
137 | n = vscnprintf(buf, rem, fmt, args);
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/dccp/ccid.c: In function ‘ccid_kmem_cache_create’:
net/dccp/ccid.c:85:2: warning: function ‘ccid_kmem_cache_create’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
85 | vsnprintf(slab_name_fmt, CCID_SLAB_NAME_LENGTH, fmt, args);
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that the compiler is performing printf checking, we get the warning:
net/tipc/netlink_compat.c: In function ‘tipc_nl_compat_link_stat_dump’:
net/tipc/netlink_compat.c:591:39: warning: format ‘%s’ expects argument of type ‘char *’, but argument 3 has type ‘void *’ [-Wformat=]
591 | tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n",
| ~^
| |
| char *
| %p
592 | nla_data(link[TIPC_NLA_LINK_NAME]));
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| void *
There is no nla_string(), so cast to a char *.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201028004333.929816-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
After I sent a fix for what appeared to be a harmless warning in
the wimax user interface code, the conclusion was that the whole
thing has most likely not been used in a very long time, and the
user interface possibly been broken since b61a5eea59 ("wimax: use
genl_register_family_with_ops()").
Using a shared branch between net-next and staging should help
coordinate patches getting submitted against it.
-----BEGIN PGP SIGNATURE-----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=PyFd
-----END PGP SIGNATURE-----
Merge tag 'wimax-staging' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground
Arnd Bergmann says:
====================
wimax: move to staging
After I sent a fix for what appeared to be a harmless warning in
the wimax user interface code, the conclusion was that the whole
thing has most likely not been used in a very long time, and the
user interface possibly been broken since b61a5eea59 ("wimax: use
genl_register_family_with_ops()").
Using a shared branch between net-next and staging should help
coordinate patches getting submitted against it.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
TIPC reserves 64 service types for current and future internal use.
Therefore, the bind() function is meant to block regular user sockets
from being bound to these values, while it should let through such
bindings from internal users.
However, since we at the design moment saw no way to distinguish
between regular and internal users the filter function ended up
with allowing all bindings of the reserved types which were really
in use ([0,1]), and block all the rest ([2,63]).
This is risky, since a regular user may bind to the service type
representing the topology server (TIPC_TOP_SRV == 1) or the one used
for indicating neighboring node status (TIPC_CFG_SRV == 0), and wreak
havoc for users of those services, i.e., most users.
The reality is however that TIPC_CFG_SRV never is bound through the
bind() function, since it doesn't represent a regular socket, and
TIPC_TOP_SRV can also be made to bypass the checks in tipc_bind()
by introducing a different entry function, tipc_sk_bind().
It should be noted that although this is a change of the API semantics,
there is no risk we will break any currently working applications by
doing this. Any application trying to bind to the values in question
would be badly broken from the outset, so there is no chance we would
find any such applications in real-world production systems.
v2: Added warning printout when a user is blocked from binding,
as suggested by Jakub Kicinski
Acked-by: Yung Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Link: https://lore.kernel.org/r/20201030012938.489557-1-jmaloy@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ip6_tnl_encap assigns to proto transport protocol which
encapsulates inner packet, but we must pass to set_inner_ipproto
protocol of that inner packet.
Calling set_inner_ipproto after ip6_tnl_encap might break gso.
For example, in case of encapsulating ipv6 packet in fou6 packet, inner_ipproto
would be set to IPPROTO_UDP instead of IPPROTO_IPV6. This would lead to
incorrect calling sequence of gso functions:
ipv6_gso_segment -> udp6_ufo_fragment -> skb_udp_tunnel_segment -> udp6_ufo_fragment
instead of:
ipv6_gso_segment -> udp6_ufo_fragment -> skb_udp_tunnel_segment -> ip6ip6_gso_segment
Fixes: 6c11fbf97e ("ip6_tunnel: add MPLS transmit support")
Signed-off-by: Alexander Ovechkin <ovov@yandex-team.ru>
Link: https://lore.kernel.org/r/20201029171012.20904-1-ovov@yandex-team.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If userspace does not include the trailing end of batch message, then
nfnetlink aborts the transaction. This allows to check that ruleset
updates trigger no errors.
After this patch, invoking this command from the prerouting chain:
# nft -c add rule x y fib saddr . oif type local
fails since oif is not supported there.
This patch fixes the lack of rule validation from the abort/check path
to catch configuration errors such as the one above.
Fixes: a654de8fdc ("netfilter: nf_tables: fix chain dependency validation")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
If netfilter changes the packet mark when mangling, the packet is
rerouted using the route_me_harder set of functions. Prior to this
commit, there's one big difference between route_me_harder and the
ordinary initial routing functions, described in the comment above
__ip_queue_xmit():
/* Note: skb->sk can be different from sk, in case of tunnels */
int __ip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
That function goes on to correctly make use of sk->sk_bound_dev_if,
rather than skb->sk->sk_bound_dev_if. And indeed the comment is true: a
tunnel will receive a packet in ndo_start_xmit with an initial skb->sk.
It will make some transformations to that packet, and then it will send
the encapsulated packet out of a *new* socket. That new socket will
basically always have a different sk_bound_dev_if (otherwise there'd be
a routing loop). So for the purposes of routing the encapsulated packet,
the routing information as it pertains to the socket should come from
that socket's sk, rather than the packet's original skb->sk. For that
reason __ip_queue_xmit() and related functions all do the right thing.
One might argue that all tunnels should just call skb_orphan(skb) before
transmitting the encapsulated packet into the new socket. But tunnels do
*not* do this -- and this is wisely avoided in skb_scrub_packet() too --
because features like TSQ rely on skb->destructor() being called when
that buffer space is truely available again. Calling skb_orphan(skb) too
early would result in buffers filling up unnecessarily and accounting
info being all wrong. Instead, additional routing must take into account
the new sk, just as __ip_queue_xmit() notes.
So, this commit addresses the problem by fishing the correct sk out of
state->sk -- it's already set properly in the call to nf_hook() in
__ip_local_out(), which receives the sk as part of its normal
functionality. So we make sure to plumb state->sk through the various
route_me_harder functions, and then make correct use of it following the
example of __ip_queue_xmit().
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The netlink report should be sent regardless the available listeners.
Fixes: 84d7fce693 ("netfilter: nf_tables: export rule-set generation ID")
Fixes: 3b49e2e94e ("netfilter: nf_tables: add flow table netlink frontend")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
After the previous similar bugfix there was another bug here,
if no VHT elements were found we also disabled HE. Fix this to
disable HE only on the 5 GHz band; on 6 GHz it was already not
disabled, and on 2.4 GHz there need (should) not be any VHT.
Fixes: 57fa5e85d5 ("mac80211: determine chandef from HE 6 GHz operation")
Link: https://lore.kernel.org/r/20201013140156.535a2fc6192f.Id6e5e525a60ac18d245d86f4015f1b271fce6ee6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fix follow warning:
[net/wireless/reg.c:3619]: (warning) %d in format string (no. 2)
requires 'int' but the argument type is 'unsigned int'.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ye Bin <yebin10@huawei.com>
Link: https://lore.kernel.org/r/20201009070215.63695-1-yebin10@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some identifiers have different names between their prototypes
and the kernel-doc markup.
Others need to be fixed, as kernel-doc markups should use this format:
identifier - description
In the specific case of __sta_info_flush(), add a documentation
for sta_info_flush(), as this one is the one used outside
sta_info.c.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Link: https://lore.kernel.org/r/978d35eef2dc76e21c81931804e4eaefbd6d635e.1603469755.git.mchehab+huawei@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When (for example) an IBSS station is pre-moved to AUTHORIZED
before it's inserted, and then the insertion fails, we don't
clean up the fast RX/TX states that might already have been
created, since we don't go through all the state transitions
again on the way down.
Do that, if it hasn't been done already, when the station is
freed. I considered only freeing the fast TX/RX state there,
but we might add more state so it's more robust to wind down
the state properly.
Note that we warn if the station was ever inserted, it should
have been properly cleaned up in that case, and the driver
will probably not like things happening out of order.
Reported-by: syzbot+2e293dbd67de2836ba42@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20201009141710.7223b322a955.I95bd08b9ad0e039c034927cce0b75beea38e059b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's a race condition in the netdev registration in that
NETDEV_REGISTER actually happens after the netdev is available,
and so if we initialize things only there, we might get called
with an uninitialized wdev through nl80211 - not using a wdev
but using a netdev interface index.
I found this while looking into a syzbot report, but it doesn't
really seem to be related, and unfortunately there's no repro
for it (yet). I can't (yet) explain how it managed to get into
cfg80211_release_pmsr() from nl80211_netlink_notify() without
the wdev having been initialized, as the latter only iterates
the wdevs that are linked into the rdev, which even without the
change here happened after init.
However, looking at this, it seems fairly clear that the init
needs to be done earlier, otherwise we might even re-init on a
netns move, when data might still be pending.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20201009135821.fdcbba3aad65.Ie9201d91dbcb7da32318812effdc1561aeaf4cdc@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When ieee80211_skb_resize() is called from ieee80211_build_hdr()
the skb has no 802.11 header yet, in fact it consist only of the
payload as the ethernet frame is removed. As such, we're using
the payload data for ieee80211_is_mgmt(), which is of course
completely wrong. This didn't really hurt us because these are
always data frames, so we could only have added more tailroom
than we needed if we determined it was a management frame and
sdata->crypto_tx_tailroom_needed_cnt was false.
However, syzbot found that of course there need not be any payload,
so we're using at best uninitialized memory for the check.
Fix this to pass explicitly the kind of frame that we have instead
of checking there, by replacing the "bool may_encrypt" argument
with an argument that can carry the three possible states - it's
not going to be encrypted, it's a management frame, or it's a data
frame (and then we check sdata->crypto_tx_tailroom_needed_cnt).
Reported-by: syzbot+32fd1a1bfe355e93f1e2@syzkaller.appspotmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20201009132538.e1fd7f802947.I799b288466ea2815f9d4c84349fae697dca2f189@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When sending EAPOL frames via NL80211 they are treated as injected
frames in mac80211. Due to commit 1df2bdba52 ("mac80211: never drop
injected frames even if normally not allowed") these injected frames
were not assigned a sta context in the function ieee80211_tx_dequeue,
causing certain wireless network cards to always send EAPOL frames in
plaintext. This may cause compatibility issues with some clients or
APs, which for instance can cause the group key handshake to fail and
in turn would cause the station to get disconnected.
This commit fixes this regression by assigning a sta context in
ieee80211_tx_dequeue to injected frames as well.
Note that sending EAPOL frames in plaintext is not a security issue
since they contain their own encryption and authentication protection.
Cc: stable@vger.kernel.org
Fixes: 1df2bdba52 ("mac80211: never drop injected frames even if normally not allowed")
Reported-by: Thomas Deutschmann <whissi@gentoo.org>
Tested-by: Christian Hesse <list@eworm.de>
Tested-by: Thomas Deutschmann <whissi@gentoo.org>
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201019160113.350912-1-Mathy.Vanhoef@kuleuven.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is the implementation of Netlink notifications out of CFM.
Notifications are initiated whenever a state change happens in CFM.
IFLA_BRIDGE_CFM:
Points to the CFM information.
IFLA_BRIDGE_CFM_MEP_STATUS_INFO:
This indicate that the MEP instance status are following.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO:
This indicate that the peer MEP status are following.
CFM nested attribute has the following attributes in next level.
IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE:
The MEP instance number of the delivered status.
The type is NLA_U32.
IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN:
The MEP instance received CFM PDU with unexpected Opcode.
The type is NLA_U32 (bool).
IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN:
The MEP instance received CFM PDU with unexpected version.
The type is NLA_U32 (bool).
IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN:
The MEP instance received CCM PDU with MD level lower than
configured level. This frame is discarded.
The type is NLA_U32 (bool).
IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE:
The MEP instance number of the delivered status.
The type is NLA_U32.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID:
The added Peer MEP ID of the delivered status.
The type is NLA_U32.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT:
The CCM defect status.
The type is NLA_U32 (bool).
True means no CCM frame is received for 3.25 intervals.
IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI:
The last received CCM PDU RDI.
The type is NLA_U32 (bool).
IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE:
The last received CCM PDU Port Status TLV value field.
The type is NLA_U8.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE:
The last received CCM PDU Interface Status TLV value field.
The type is NLA_U8.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN:
A CCM frame has been received from Peer MEP.
The type is NLA_U32 (bool).
This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN:
A CCM frame with TLV has been received from Peer MEP.
The type is NLA_U32 (bool).
This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN:
A CCM frame with unexpected sequence number has been received
from Peer MEP.
The type is NLA_U32 (bool).
When a sequence number is not one higher than previously received
then it is unexpected.
This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO.
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is the implementation of CFM netlink status
get information interface.
Add new nested netlink attributes. These attributes are used by the
user space to get status information.
GETLINK:
Request filter RTEXT_FILTER_CFM_STATUS:
Indicating that CFM status information must be delivered.
IFLA_BRIDGE_CFM:
Points to the CFM information.
IFLA_BRIDGE_CFM_MEP_STATUS_INFO:
This indicate that the MEP instance status are following.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO:
This indicate that the peer MEP status are following.
CFM nested attribute has the following attributes in next level.
GETLINK RTEXT_FILTER_CFM_STATUS:
IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE:
The MEP instance number of the delivered status.
The type is u32.
IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN:
The MEP instance received CFM PDU with unexpected Opcode.
The type is u32 (bool).
IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN:
The MEP instance received CFM PDU with unexpected version.
The type is u32 (bool).
IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN:
The MEP instance received CCM PDU with MD level lower than
configured level. This frame is discarded.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE:
The MEP instance number of the delivered status.
The type is u32.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID:
The added Peer MEP ID of the delivered status.
The type is u32.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT:
The CCM defect status.
The type is u32 (bool).
True means no CCM frame is received for 3.25 intervals.
IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI:
The last received CCM PDU RDI.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE:
The last received CCM PDU Port Status TLV value field.
The type is u8.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE:
The last received CCM PDU Interface Status TLV value field.
The type is u8.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN:
A CCM frame has been received from Peer MEP.
The type is u32 (bool).
This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN:
A CCM frame with TLV has been received from Peer MEP.
The type is u32 (bool).
This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO.
IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN:
A CCM frame with unexpected sequence number has been received
from Peer MEP.
The type is u32 (bool).
When a sequence number is not one higher than previously received
then it is unexpected.
This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO.
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is the implementation of CFM netlink configuration
get information interface.
Add new nested netlink attributes. These attributes are used by the
user space to get configuration information.
GETLINK:
Request filter RTEXT_FILTER_CFM_CONFIG:
Indicating that CFM configuration information must be delivered.
IFLA_BRIDGE_CFM:
Points to the CFM information.
IFLA_BRIDGE_CFM_MEP_CREATE_INFO:
This indicate that MEP instance create parameters are following.
IFLA_BRIDGE_CFM_MEP_CONFIG_INFO:
This indicate that MEP instance config parameters are following.
IFLA_BRIDGE_CFM_CC_CONFIG_INFO:
This indicate that MEP instance CC functionality
parameters are following.
IFLA_BRIDGE_CFM_CC_RDI_INFO:
This indicate that CC transmitted CCM PDU RDI
parameters are following.
IFLA_BRIDGE_CFM_CC_CCM_TX_INFO:
This indicate that CC transmitted CCM PDU parameters are
following.
IFLA_BRIDGE_CFM_CC_PEER_MEP_INFO:
This indicate that the added peer MEP IDs are following.
CFM nested attribute has the following attributes in next level.
GETLINK RTEXT_FILTER_CFM_CONFIG:
IFLA_BRIDGE_CFM_MEP_CREATE_INSTANCE:
The created MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_MEP_CREATE_DOMAIN:
The created MEP domain.
The type is u32 (br_cfm_domain).
It must be BR_CFM_PORT.
This means that CFM frames are transmitted and received
directly on the port - untagged. Not in a VLAN.
IFLA_BRIDGE_CFM_MEP_CREATE_DIRECTION:
The created MEP direction.
The type is u32 (br_cfm_mep_direction).
It must be BR_CFM_MEP_DIRECTION_DOWN.
This means that CFM frames are transmitted and received on
the port. Not in the bridge.
IFLA_BRIDGE_CFM_MEP_CREATE_IFINDEX:
The created MEP residence port ifindex.
The type is u32 (ifindex).
IFLA_BRIDGE_CFM_MEP_DELETE_INSTANCE:
The deleted MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_MEP_CONFIG_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_MEP_CONFIG_UNICAST_MAC:
The configured MEP unicast MAC address.
The type is 6*u8 (array).
This is used as SMAC in all transmitted CFM frames.
IFLA_BRIDGE_CFM_MEP_CONFIG_MDLEVEL:
The configured MEP unicast MD level.
The type is u32.
It must be in the range 1-7.
No CFM frames are passing through this MEP on lower levels.
IFLA_BRIDGE_CFM_MEP_CONFIG_MEPID:
The configured MEP ID.
The type is u32.
It must be in the range 0-0x1FFF.
This MEP ID is inserted in any transmitted CCM frame.
IFLA_BRIDGE_CFM_CC_CONFIG_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_CC_CONFIG_ENABLE:
The Continuity Check (CC) functionality is enabled or disabled.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL:
The CC expected receive interval of CCM frames.
The type is u32 (br_cfm_ccm_interval).
This is also the transmission interval of CCM frames when enabled.
IFLA_BRIDGE_CFM_CC_CONFIG_EXP_MAID:
The CC expected receive MAID in CCM frames.
The type is CFM_MAID_LENGTH*u8.
This is MAID is also inserted in transmitted CCM frames.
IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_CC_PEER_MEPID:
The CC Peer MEP ID added.
The type is u32.
When a Peer MEP ID is added and CC is enabled it is expected to
receive CCM frames from that Peer MEP.
IFLA_BRIDGE_CFM_CC_RDI_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_CC_RDI_RDI:
The RDI that is inserted in transmitted CCM PDU.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CCM_TX_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_CC_CCM_TX_DMAC:
The transmitted CCM frame destination MAC address.
The type is 6*u8 (array).
This is used as DMAC in all transmitted CFM frames.
IFLA_BRIDGE_CFM_CC_CCM_TX_SEQ_NO_UPDATE:
The transmitted CCM frame update (increment) of sequence
number is enabled or disabled.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CCM_TX_PERIOD:
The period of time where CCM frame are transmitted.
The type is u32.
The time is given in seconds. SETLINK IFLA_BRIDGE_CFM_CC_CCM_TX
must be done before timeout to keep transmission alive.
When period is zero any ongoing CCM frame transmission
will be stopped.
IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV:
The transmitted CCM frame update with Interface Status TLV
is enabled or disabled.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV_VALUE:
The transmitted Interface Status TLV value field.
The type is u8.
IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV:
The transmitted CCM frame update with Port Status TLV is enabled
or disabled.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV_VALUE:
The transmitted Port Status TLV value field.
The type is u8.
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is the implementation of CFM netlink configuration
set information interface.
Add new nested netlink attributes. These attributes are used by the
user space to create/delete/configure CFM instances.
SETLINK:
IFLA_BRIDGE_CFM:
Indicate that the following attributes are CFM.
IFLA_BRIDGE_CFM_MEP_CREATE:
This indicate that a MEP instance must be created.
IFLA_BRIDGE_CFM_MEP_DELETE:
This indicate that a MEP instance must be deleted.
IFLA_BRIDGE_CFM_MEP_CONFIG:
This indicate that a MEP instance must be configured.
IFLA_BRIDGE_CFM_CC_CONFIG:
This indicate that a MEP instance Continuity Check (CC)
functionality must be configured.
IFLA_BRIDGE_CFM_CC_PEER_MEP_ADD:
This indicate that a CC Peer MEP must be added.
IFLA_BRIDGE_CFM_CC_PEER_MEP_REMOVE:
This indicate that a CC Peer MEP must be removed.
IFLA_BRIDGE_CFM_CC_CCM_TX:
This indicate that the CC transmitted CCM PDU must be configured.
IFLA_BRIDGE_CFM_CC_RDI:
This indicate that the CC transmitted CCM PDU RDI must be
configured.
CFM nested attribute has the following attributes in next level.
SETLINK RTEXT_FILTER_CFM_CONFIG:
IFLA_BRIDGE_CFM_MEP_CREATE_INSTANCE:
The created MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_MEP_CREATE_DOMAIN:
The created MEP domain.
The type is u32 (br_cfm_domain).
It must be BR_CFM_PORT.
This means that CFM frames are transmitted and received
directly on the port - untagged. Not in a VLAN.
IFLA_BRIDGE_CFM_MEP_CREATE_DIRECTION:
The created MEP direction.
The type is u32 (br_cfm_mep_direction).
It must be BR_CFM_MEP_DIRECTION_DOWN.
This means that CFM frames are transmitted and received on
the port. Not in the bridge.
IFLA_BRIDGE_CFM_MEP_CREATE_IFINDEX:
The created MEP residence port ifindex.
The type is u32 (ifindex).
IFLA_BRIDGE_CFM_MEP_DELETE_INSTANCE:
The deleted MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_MEP_CONFIG_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_MEP_CONFIG_UNICAST_MAC:
The configured MEP unicast MAC address.
The type is 6*u8 (array).
This is used as SMAC in all transmitted CFM frames.
IFLA_BRIDGE_CFM_MEP_CONFIG_MDLEVEL:
The configured MEP unicast MD level.
The type is u32.
It must be in the range 1-7.
No CFM frames are passing through this MEP on lower levels.
IFLA_BRIDGE_CFM_MEP_CONFIG_MEPID:
The configured MEP ID.
The type is u32.
It must be in the range 0-0x1FFF.
This MEP ID is inserted in any transmitted CCM frame.
IFLA_BRIDGE_CFM_CC_CONFIG_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_CC_CONFIG_ENABLE:
The Continuity Check (CC) functionality is enabled or disabled.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL:
The CC expected receive interval of CCM frames.
The type is u32 (br_cfm_ccm_interval).
This is also the transmission interval of CCM frames when enabled.
IFLA_BRIDGE_CFM_CC_CONFIG_EXP_MAID:
The CC expected receive MAID in CCM frames.
The type is CFM_MAID_LENGTH*u8.
This is MAID is also inserted in transmitted CCM frames.
IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_CC_PEER_MEPID:
The CC Peer MEP ID added.
The type is u32.
When a Peer MEP ID is added and CC is enabled it is expected to
receive CCM frames from that Peer MEP.
IFLA_BRIDGE_CFM_CC_RDI_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_CC_RDI_RDI:
The RDI that is inserted in transmitted CCM PDU.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CCM_TX_INSTANCE:
The configured MEP instance number.
The type is u32.
IFLA_BRIDGE_CFM_CC_CCM_TX_DMAC:
The transmitted CCM frame destination MAC address.
The type is 6*u8 (array).
This is used as DMAC in all transmitted CFM frames.
IFLA_BRIDGE_CFM_CC_CCM_TX_SEQ_NO_UPDATE:
The transmitted CCM frame update (increment) of sequence
number is enabled or disabled.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CCM_TX_PERIOD:
The period of time where CCM frame are transmitted.
The type is u32.
The time is given in seconds. SETLINK IFLA_BRIDGE_CFM_CC_CCM_TX
must be done before timeout to keep transmission alive.
When period is zero any ongoing CCM frame transmission
will be stopped.
IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV:
The transmitted CCM frame update with Interface Status TLV
is enabled or disabled.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV_VALUE:
The transmitted Interface Status TLV value field.
The type is u8.
IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV:
The transmitted CCM frame update with Port Status TLV is enabled
or disabled.
The type is u32 (bool).
IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV_VALUE:
The transmitted Port Status TLV value field.
The type is u8.
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is the third commit of the implementation of the CFM protocol
according to 802.1Q section 12.14.
Functionality is extended with CCM frame reception.
The MEP instance now contains CCM based status information.
Most important is the CCM defect status indicating if correct
CCM frames are received with the expected interval.
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is the second commit of the implementation of the CFM protocol
according to 802.1Q section 12.14.
Functionality is extended with CCM frame transmission.
Interface is extended with these functions:
br_cfm_cc_rdi_set()
br_cfm_cc_ccm_tx()
br_cfm_cc_config_set()
A MEP Continuity Check feature can be configured by
br_cfm_cc_config_set()
The Continuity Check parameters can be configured to be used when
transmitting CCM.
A MEP can be configured to start or stop transmission of CCM frames by
br_cfm_cc_ccm_tx()
The CCM will be transmitted for a selected period in seconds.
Must call this function before timeout to keep transmission alive.
A MEP transmitting CCM can be configured with inserted RDI in PDU by
br_cfm_cc_rdi_set()
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is the first commit of the implementation of the CFM protocol
according to 802.1Q section 12.14.
It contains MEP instance create, delete and configuration.
Connectivity Fault Management (CFM) comprises capabilities for
detecting, verifying, and isolating connectivity failures in
Virtual Bridged Networks. These capabilities can be used in
networks operated by multiple independent organizations, each
with restricted management access to each others equipment.
CFM functions are partitioned as follows:
- Path discovery
- Fault detection
- Fault verification and isolation
- Fault notification
- Fault recovery
Interface consists of these functions:
br_cfm_mep_create()
br_cfm_mep_delete()
br_cfm_mep_config_set()
br_cfm_cc_config_set()
br_cfm_cc_peer_mep_add()
br_cfm_cc_peer_mep_remove()
A MEP instance is created by br_cfm_mep_create()
-It is the Maintenance association End Point
described in 802.1Q section 19.2.
-It is created on a specific level (1-7) and is assuring
that no CFM frames are passing through this MEP on lower levels.
-It initiates and validates CFM frames on its level.
-It can only exist on a port that is related to a bridge.
-Attributes given cannot be changed until the instance is
deleted.
A MEP instance can be deleted by br_cfm_mep_delete().
A created MEP instance has attributes that can be
configured by br_cfm_mep_config_set().
A MEP Continuity Check feature can be configured by
br_cfm_cc_config_set()
The Continuity Check Receiver state machine can be
enabled and disabled.
According to 802.1Q section 19.2.8
A MEP can have Peer MEPs added and removed by
br_cfm_cc_peer_mep_add() and br_cfm_cc_peer_mep_remove()
The Continuity Check feature can maintain connectivity
status on each added Peer MEP.
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This makes it possible to include or exclude the CFM
protocol according to 802.1Q section 12.14.
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch extends the processing of frames in the bridge. Currently MRP
frames needs special processing and the current implementation doesn't
allow a nice way to process different frame types. Therefore try to
improve this by adding a list that contains frame types that need
special processing. This list is iterated for each input frame and if
there is a match based on frame type then these functions will be called
and decide what to do with the frame. It can process the frame then the
bridge doesn't need to do anything or don't process so then the bridge
will do normal forwarding.
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently when an invalid ioctl command is used the error return
is -EINVAL. Fix this by returning the correct error -ENOIOCTLCMD.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When exercising the kernel with stress-ng with some ioctl tests the
"Unknown ioctl" error message is spamming the kernel log at a high
rate. Remove this message.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Current release regressions:
- r8169: fix forced threading conflicting with other shared
interrupts; we tried to fix the use of raise_softirq_irqoff
from an IRQ handler on RT by forcing hard irqs, but this
driver shares legacy PCI IRQs so drop the _irqoff() instead
- tipc: fix memory leak caused by a recent syzbot report fix
to tipc_buf_append()
Current release - bugs in new features:
- devlink: Unlock on error in dumpit() and fix some error codes
- net/smc: fix null pointer dereference in smc_listen_decline()
Previous release - regressions:
- tcp: Prevent low rmem stalls with SO_RCVLOWAT.
- net: protect tcf_block_unbind with block lock
- ibmveth: Fix use of ibmveth in a bridge; the self-imposed filtering
to only send legal frames to the hypervisor was too strict
- net: hns3: Clear the CMDQ registers before unmapping BAR region;
incorrect cleanup order was leading to a crash
- bnxt_en - handful of fixes to fixes:
- Send HWRM_FUNC_RESET fw command unconditionally, even
if there are PCIe errors being reported
- Check abort error state in bnxt_open_nic().
- Invoke cancel_delayed_work_sync() for PFs also.
- Fix regression in workqueue cleanup logic in bnxt_remove_one().
- mlxsw: Only advertise link modes supported by both driver
and device, after removal of 56G support from the driver
56G was not cleared from advertised modes
- net/smc: fix suppressed return code
Previous release - always broken:
- netem: fix zero division in tabledist, caused by integer overflow
- bnxt_en: Re-write PCI BARs after PCI fatal error.
- cxgb4: set up filter action after rewrites
- net: ipa: command payloads already mapped
Misc:
- s390/ism: fix incorrect system EID, it's okay to change since
it was added in current release
- vsock: use ns_capable_noaudit() on socket create to suppress
false positive audit messages
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----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=reLi
-----END PGP SIGNATURE-----
Merge tag 'net-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Current release regressions:
- r8169: fix forced threading conflicting with other shared
interrupts; we tried to fix the use of raise_softirq_irqoff from an
IRQ handler on RT by forcing hard irqs, but this driver shares
legacy PCI IRQs so drop the _irqoff() instead
- tipc: fix memory leak caused by a recent syzbot report fix to
tipc_buf_append()
Current release - bugs in new features:
- devlink: Unlock on error in dumpit() and fix some error codes
- net/smc: fix null pointer dereference in smc_listen_decline()
Previous release - regressions:
- tcp: Prevent low rmem stalls with SO_RCVLOWAT.
- net: protect tcf_block_unbind with block lock
- ibmveth: Fix use of ibmveth in a bridge; the self-imposed filtering
to only send legal frames to the hypervisor was too strict
- net: hns3: Clear the CMDQ registers before unmapping BAR region;
incorrect cleanup order was leading to a crash
- bnxt_en - handful of fixes to fixes:
- Send HWRM_FUNC_RESET fw command unconditionally, even if there
are PCIe errors being reported
- Check abort error state in bnxt_open_nic().
- Invoke cancel_delayed_work_sync() for PFs also.
- Fix regression in workqueue cleanup logic in bnxt_remove_one().
- mlxsw: Only advertise link modes supported by both driver and
device, after removal of 56G support from the driver 56G was not
cleared from advertised modes
- net/smc: fix suppressed return code
Previous release - always broken:
- netem: fix zero division in tabledist, caused by integer overflow
- bnxt_en: Re-write PCI BARs after PCI fatal error.
- cxgb4: set up filter action after rewrites
- net: ipa: command payloads already mapped
Misc:
- s390/ism: fix incorrect system EID, it's okay to change since it
was added in current release
- vsock: use ns_capable_noaudit() on socket create to suppress false
positive audit messages"
* tag 'net-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (36 commits)
r8169: fix issue with forced threading in combination with shared interrupts
netem: fix zero division in tabledist
ibmvnic: fix ibmvnic_set_mac
mptcp: add missing memory scheduling in the rx path
tipc: fix memory leak caused by tipc_buf_append()
gtp: fix an use-before-init in gtp_newlink()
net: protect tcf_block_unbind with block lock
ibmveth: Fix use of ibmveth in a bridge.
net/sched: act_mpls: Add softdep on mpls_gso.ko
ravb: Fix bit fields checking in ravb_hwtstamp_get()
devlink: Unlock on error in dumpit()
devlink: Fix some error codes
chelsio/chtls: fix memory leaks in CPL handlers
chelsio/chtls: fix deadlock issue
net: hns3: Clear the CMDQ registers before unmapping BAR region
bnxt_en: Send HWRM_FUNC_RESET fw command unconditionally.
bnxt_en: Check abort error state in bnxt_open_nic().
bnxt_en: Re-write PCI BARs after PCI fatal error.
bnxt_en: Invoke cancel_delayed_work_sync() for PFs also.
bnxt_en: Fix regression in workqueue cleanup logic in bnxt_remove_one().
...
Currently it is possible to craft a special netlink RTM_NEWQDISC
command that can result in jitter being equal to 0x80000000. It is
enough to set the 32 bit jitter to 0x02000000 (it will later be
multiplied by 2^6) or just set the 64 bit jitter via
TCA_NETEM_JITTER64. This causes an overflow during the generation of
uniformly distributed numbers in tabledist(), which in turn leads to
division by zero (sigma != 0, but sigma * 2 is 0).
The related fragment of code needs 32-bit division - see commit
9b0ed89 ("netem: remove unnecessary 64 bit modulus"), so switching to
64 bit is not an option.
Fix the issue by keeping the value of jitter within the range that can
be adequately handled by tabledist() - [0;INT_MAX]. As negative std
deviation makes no sense, take the absolute value of the passed value
and cap it at INT_MAX. Inside tabledist(), switch to unsigned 32 bit
arithmetic in order to prevent overflows.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Aleksandr Nogikh <nogikh@google.com>
Reported-by: syzbot+ec762a6342ad0d3c0d8f@syzkaller.appspotmail.com
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Link: https://lore.kernel.org/r/20201028170731.1383332-1-aleksandrnogikh@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There are no known users of this driver as of October 2020, and it will
be removed unless someone turns out to still need it in future releases.
According to https://en.wikipedia.org/wiki/List_of_WiMAX_networks, there
have been many public wimax networks, but it appears that many of these
have migrated to LTE or discontinued their service altogether.
As most PCs and phones lack WiMAX hardware support, the remaining
networks tend to use standalone routers. These almost certainly
run Linux, but not a modern kernel or the mainline wimax driver stack.
NetworkManager appears to have dropped userspace support in 2015
https://bugzilla.gnome.org/show_bug.cgi?id=747846, the
www.linuxwimax.org
site had already shut down earlier.
WiMax is apparently still being deployed on airport campus networks
("AeroMACS"), but in a frequency band that was not supported by the old
Intel 2400m (used in Sandy Bridge laptops and earlier), which is the
only driver using the kernel's wimax stack.
Move all files into drivers/staging/wimax, including the uapi header
files and documentation, to make it easier to remove it when it gets
to that. Only minimal changes are made to the source files, in order
to make it possible to port patches across the move.
Also remove the MAINTAINERS entry that refers to a broken mailing
list and website.
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-By: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Suggested-by: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
gcc -Wextra points out multiple fields that use the same index '1'
in the wimax_gnl_policy definition:
net/wimax/stack.c:393:29: warning: initialized field overwritten [-Woverride-init]
net/wimax/stack.c:397:28: warning: initialized field overwritten [-Woverride-init]
net/wimax/stack.c:398:26: warning: initialized field overwritten [-Woverride-init]
This seems to work since all four use the same NLA_U32 value, but it
still appears to be wrong. In addition, there is no intializer for
WIMAX_GNL_MSG_PIPE_NAME, which uses the same index '2' as
WIMAX_GNL_RFKILL_STATE.
Johannes already changed this twice to improve it, but I don't think
there is a good solution, so try to work around it by using a
numeric index and adding comments.
Fixes: 3b0f31f2b8 ("genetlink: make policy common to family")
Fixes: b61a5eea59 ("wimax: use genl_register_family_with_ops()")
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
When moving the skbs from the subflow into the msk receive
queue, we must schedule there the required amount of memory.
Try to borrow the required memory from the subflow, if needed,
so that we leverage the existing TCP heuristic.
Fixes: 6771bfd9ee ("mptcp: update mptcp ack sequence from work queue")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Link: https://lore.kernel.org/r/f6143a6193a083574f11b00dbf7b5ad151bc4ff4.1603810630.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit ed42989eab ("tipc: fix the skb_unshare() in tipc_buf_append()")
replaced skb_unshare() with skb_copy() to not reduce the data reference
counter of the original skb intentionally. This is not the correct
way to handle the cloned skb because it causes memory leak in 2
following cases:
1/ Sending multicast messages via broadcast link
The original skb list is cloned to the local skb list for local
destination. After that, the data reference counter of each skb
in the original list has the value of 2. This causes each skb not
to be freed after receiving ACK:
tipc_link_advance_transmq()
{
...
/* release skb */
__skb_unlink(skb, &l->transmq);
kfree_skb(skb); <-- memory exists after being freed
}
2/ Sending multicast messages via replicast link
Similar to the above case, each skb cannot be freed after purging
the skb list:
tipc_mcast_xmit()
{
...
__skb_queue_purge(pkts); <-- memory exists after being freed
}
This commit fixes this issue by using skb_unshare() instead. Besides,
to avoid use-after-free error reported by KASAN, the pointer to the
fragment is set to NULL before calling skb_unshare() to make sure that
the original skb is not freed after freeing the fragment 2 times in
case skb_unshare() returns NULL.
Fixes: ed42989eab ("tipc: fix the skb_unshare() in tipc_buf_append()")
Acked-by: Jon Maloy <jmaloy@redhat.com>
Reported-by: Thang Hoang Ngo <thang.h.ngo@dektech.com.au>
Signed-off-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://lore.kernel.org/r/20201027032403.1823-1-tung.q.nguyen@dektech.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fix a possible memory leak at xsk socket close that is caused by the
refcounting of the umem object being wrong. The reference count of the
umem was decremented only after the pool had been freed. Note that if
the buffer pool is destroyed, it is important that the umem is
destroyed after the pool, otherwise the umem would disappear while the
driver is still running. And as the buffer pool needs to be destroyed
in a work queue, the umem is also (if its refcount reaches zero)
destroyed after the buffer pool in that same work queue.
What was missing is that the refcount also needs to be decremented
when the pool is not freed and when the pool has not even been
created. The first case happens when the refcount of the pool is
higher than 1, i.e. it is still being used by some other socket using
the same device and queue id. In this case, it is safe to decrement
the refcount of the umem outside of the work queue as the umem will
never be freed because the refcount of the umem is always greater than
or equal to the refcount of the buffer pool. The second case is if the
buffer pool has not been created yet, i.e. the socket was closed
before it was bound but after the umem was created. In this case, it
is safe to destroy the umem outside of the work queue, since there is
no pool that can use it by definition.
Fixes: 1c1efc2af1 ("xsk: Create and free buffer pool independently from umem")
Reported-by: syzbot+eb71df123dc2be2c1456@syzkaller.appspotmail.com
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Link: https://lore.kernel.org/bpf/1603801921-2712-1-git-send-email-magnus.karlsson@gmail.com
There are two flows for handling RDMA_CM_EVENT_ROUTE_RESOLVED, either the
handler triggers a completion and another thread does rdma_connect() or
the handler directly calls rdma_connect().
In all cases rdma_connect() needs to hold the handler_mutex, but when
handler's are invoked this is already held by the core code. This causes
ULPs using the 2nd method to deadlock.
Provide a rdma_connect_locked() and have all ULPs call it from their
handlers.
Link: https://lore.kernel.org/r/0-v2-53c22d5c1405+33-rdma_connect_locking_jgg@nvidia.com
Reported-and-tested-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Fixes: 2a7cec5381 ("RDMA/cma: Fix locking for the RDMA_CM_CONNECT state")
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
TCA_MPLS_ACT_PUSH and TCA_MPLS_ACT_MAC_PUSH might be used on gso
packets. Such packets will thus require mpls_gso.ko for segmentation.
v2: Drop dependency on CONFIG_NET_MPLS_GSO in Kconfig (from Jakub and
David).
Fixes: 2a2ea50870 ("net: sched: add mpls manipulation actions to TC")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/1f6cab15bbd15666795061c55563aaf6a386e90e.1603708007.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This needs to unlock before returning.
Fixes: 544e7c33ec ("net: devlink: Add support for port regions")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20201026080127.GB1628785@mwanda
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
These paths don't set the error codes. It's especially important in
devlink_nl_region_notify_build() where it leads to a NULL dereference in
the caller.
Fixes: 544e7c33ec ("net: devlink: Add support for port regions")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20201026080059.GA1628785@mwanda
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The patch that repaired the invalid return code in smcd_new_buf_create()
missed to take care of errno ENOSPC which has a special meaning that no
more DMBEs can be registered on the device. Fix that by keeping this
errno value during the translation of the return code.
Fixes: 6b1bbf94ab ("net/smc: fix invalid return code in smcd_new_buf_create()")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
smc_listen_work() calls smc_listen_decline() on label out_decl,
providing the ini pointer variable. But this pointer can still be null
when the label out_decl is reached.
Fix this by checking the ini variable in smc_listen_work() and call
smc_listen_decline() with the result directly.
Fixes: a7c9c5f4af ("net/smc: CLC accept / confirm V2")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
During __vsock_create() CAP_NET_ADMIN is used to determine if the
vsock_sock->trusted should be set to true. This value is used later
for determing if a remote connection should be allowed to connect
to a restricted VM. Unfortunately, if the caller doesn't have
CAP_NET_ADMIN, an audit message such as an selinux denial is
generated even if the caller does not want a trusted socket.
Logging errors on success is confusing. To avoid this, switch the
capable(CAP_NET_ADMIN) check to the noaudit version.
Reported-by: Roman Kiryanov <rkir@google.com>
https://android-review.googlesource.com/c/device/generic/goldfish/+/1468545/
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Link: https://lore.kernel.org/r/20201023143757.377574-1-jeffv@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 453431a549 ("mm, treewide: rename kzfree() to
kfree_sensitive()") renamed kzfree() to kfree_sensitive(),
but it left a compatibility definition of kzfree() to avoid
being too disruptive.
Since then a few more instances of kzfree() have slipped in.
Just get rid of them and remove the compatibility definition
once and for all.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
With the removal of the interrupt perturbations in previous random32
change (random32: make prandom_u32() output unpredictable), the PRNG
has become 100% deterministic again. While SipHash is expected to be
way more robust against brute force than the previous Tausworthe LFSR,
there's still the risk that whoever has even one temporary access to
the PRNG's internal state is able to predict all subsequent draws till
the next reseed (roughly every minute). This may happen through a side
channel attack or any data leak.
This patch restores the spirit of commit f227e3ec3b ("random32: update
the net random state on interrupt and activity") in that it will perturb
the internal PRNG's statee using externally collected noise, except that
it will not pick that noise from the random pool's bits nor upon
interrupt, but will rather combine a few elements along the Tx path
that are collectively hard to predict, such as dev, skb and txq
pointers, packet length and jiffies values. These ones are combined
using a single round of SipHash into a single long variable that is
mixed with the net_rand_state upon each invocation.
The operation was inlined because it produces very small and efficient
code, typically 3 xor, 2 add and 2 rol. The performance was measured
to be the same (even very slightly better) than before the switch to
SipHash; on a 6-core 12-thread Core i7-8700k equipped with a 40G NIC
(i40e), the connection rate dropped from 556k/s to 555k/s while the
SYN cookie rate grew from 5.38 Mpps to 5.45 Mpps.
Link: https://lore.kernel.org/netdev/20200808152628.GA27941@SDF.ORG/
Cc: George Spelvin <lkml@sdf.org>
Cc: Amit Klein <aksecurity@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: tytso@mit.edu
Cc: Florian Westphal <fw@strlen.de>
Cc: Marc Plumb <lkml.mplumb@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
With SO_RCVLOWAT, under memory pressure,
it is possible to enter a state where:
1. We have not received enough bytes to satisfy SO_RCVLOWAT.
2. We have not entered buffer pressure (see tcp_rmem_pressure()).
3. But, we do not have enough buffer space to accept more packets.
In this case, we advertise 0 rwnd (due to #3) but the application does
not drain the receive queue (no wakeup because of #1 and #2) so the
flow stalls.
Modify the heuristic for SO_RCVLOWAT so that, if we are advertising
rwnd<=rcv_mss, force a wakeup to prevent a stall.
Without this patch, setting tcp_rmem to 6143 and disabling TCP
autotune causes a stalled flow. With this patch, no stall occurs. This
is with RPC-style traffic with large messages.
Fixes: 03f45c883c ("tcp: avoid extra wakeups for SO_RCVLOWAT users")
Signed-off-by: Arjun Roy <arjunroy@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20201023184709.217614-1-arjunroy.kdev@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Cross-tree/merge window issues:
- rtl8150: don't incorrectly assign random MAC addresses; fix late
in the 5.9 cycle started depending on a return code from
a function which changed with the 5.10 PR from the usb subsystem
Current release - regressions:
- Revert "virtio-net: ethtool configurable RXCSUM", it was causing
crashes at probe when control vq was not negotiated/available
Previous releases - regressions:
- ixgbe: fix probing of multi-port 10 Gigabit Intel NICs with an MDIO
bus, only first device would be probed correctly
- nexthop: Fix performance regression in nexthop deletion by
effectively switching from recently added synchronize_rcu()
to synchronize_rcu_expedited()
- netsec: ignore 'phy-mode' device property on ACPI systems;
the property is not populated correctly by the firmware,
but firmware configures the PHY so just keep boot settings
Previous releases - always broken:
- tcp: fix to update snd_wl1 in bulk receiver fast path, addressing
bulk transfers getting "stuck"
- icmp: randomize the global rate limiter to prevent attackers from
getting useful signal
- r8169: fix operation under forced interrupt threading, make the
driver always use hard irqs, even on RT, given the handler is
light and only wants to schedule napi (and do so through
a _irqoff() variant, preferably)
- bpf: Enforce pointer id generation for all may-be-null register
type to avoid pointers erroneously getting marked as null-checked
- tipc: re-configure queue limit for broadcast link
- net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN
tunnels
- fix various issues in chelsio inline tls driver
Misc:
- bpf: improve just-added bpf_redirect_neigh() helper api to support
supplying nexthop by the caller - in case BPF program has already
done a lookup we can avoid doing another one
- remove unnecessary break statements
- make MCTCP not select IPV6, but rather depend on it
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----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=ceke
-----END PGP SIGNATURE-----
Merge tag 'net-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Cross-tree/merge window issues:
- rtl8150: don't incorrectly assign random MAC addresses; fix late in
the 5.9 cycle started depending on a return code from a function
which changed with the 5.10 PR from the usb subsystem
Current release regressions:
- Revert "virtio-net: ethtool configurable RXCSUM", it was causing
crashes at probe when control vq was not negotiated/available
Previous release regressions:
- ixgbe: fix probing of multi-port 10 Gigabit Intel NICs with an MDIO
bus, only first device would be probed correctly
- nexthop: Fix performance regression in nexthop deletion by
effectively switching from recently added synchronize_rcu() to
synchronize_rcu_expedited()
- netsec: ignore 'phy-mode' device property on ACPI systems; the
property is not populated correctly by the firmware, but firmware
configures the PHY so just keep boot settings
Previous releases - always broken:
- tcp: fix to update snd_wl1 in bulk receiver fast path, addressing
bulk transfers getting "stuck"
- icmp: randomize the global rate limiter to prevent attackers from
getting useful signal
- r8169: fix operation under forced interrupt threading, make the
driver always use hard irqs, even on RT, given the handler is light
and only wants to schedule napi (and do so through a _irqoff()
variant, preferably)
- bpf: Enforce pointer id generation for all may-be-null register
type to avoid pointers erroneously getting marked as null-checked
- tipc: re-configure queue limit for broadcast link
- net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN
tunnels
- fix various issues in chelsio inline tls driver
Misc:
- bpf: improve just-added bpf_redirect_neigh() helper api to support
supplying nexthop by the caller - in case BPF program has already
done a lookup we can avoid doing another one
- remove unnecessary break statements
- make MCTCP not select IPV6, but rather depend on it"
* tag 'net-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (62 commits)
tcp: fix to update snd_wl1 in bulk receiver fast path
net: Properly typecast int values to set sk_max_pacing_rate
netfilter: nf_fwd_netdev: clear timestamp in forwarding path
ibmvnic: save changed mac address to adapter->mac_addr
selftests: mptcp: depends on built-in IPv6
Revert "virtio-net: ethtool configurable RXCSUM"
rtnetlink: fix data overflow in rtnl_calcit()
net: ethernet: mtk-star-emac: select REGMAP_MMIO
net: hdlc_raw_eth: Clear the IFF_TX_SKB_SHARING flag after calling ether_setup
net: hdlc: In hdlc_rcv, check to make sure dev is an HDLC device
bpf, libbpf: Guard bpf inline asm from bpf_tail_call_static
bpf, selftests: Extend test_tc_redirect to use modified bpf_redirect_neigh()
bpf: Fix bpf_redirect_neigh helper api to support supplying nexthop
mptcp: depends on IPV6 but not as a module
sfc: move initialisation of efx->filter_sem to efx_init_struct()
mpls: load mpls_gso after mpls_iptunnel
net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels
net/sched: act_gate: Unlock ->tcfa_lock in tc_setup_flow_action()
net: dsa: bcm_sf2: make const array static, makes object smaller
mptcp: MPTCP_IPV6 should depend on IPV6 instead of selecting it
...
we found that the following race condition exists in
xfrm_alloc_userspi flow:
user thread state_hash_work thread
---- ----
xfrm_alloc_userspi()
__find_acq_core()
/*alloc new xfrm_state:x*/
xfrm_state_alloc()
/*schedule state_hash_work thread*/
xfrm_hash_grow_check() xfrm_hash_resize()
xfrm_alloc_spi /*hold lock*/
x->id.spi = htonl(spi) spin_lock_bh(&net->xfrm.xfrm_state_lock)
/*waiting lock release*/ xfrm_hash_transfer()
spin_lock_bh(&net->xfrm.xfrm_state_lock) /*add x into hlist:net->xfrm.state_byspi*/
hlist_add_head_rcu(&x->byspi)
spin_unlock_bh(&net->xfrm.xfrm_state_lock)
/*add x into hlist:net->xfrm.state_byspi 2 times*/
hlist_add_head_rcu(&x->byspi)
1. a new state x is alloced in xfrm_state_alloc() and added into the bydst hlist
in __find_acq_core() on the LHS;
2. on the RHS, state_hash_work thread travels the old bydst and tranfers every xfrm_state
(include x) into the new bydst hlist and new byspi hlist;
3. user thread on the LHS gets the lock and adds x into the new byspi hlist again.
So the same xfrm_state (x) is added into the same list_hash
(net->xfrm.state_byspi) 2 times that makes the list_hash become
an inifite loop.
To fix the race, x->id.spi = htonl(spi) in the xfrm_alloc_spi() is moved
to the back of spin_lock_bh, sothat state_hash_work thread no longer add x
which id.spi is zero into the hash_list.
Fixes: f034b5d4ef ("[XFRM]: Dynamic xfrm_state hash table sizing.")
Signed-off-by: zhuoliang zhang <zhuoliang.zhang@mediatek.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
In the header prediction fast path for a bulk data receiver, if no
data is newly acknowledged then we do not call tcp_ack() and do not
call tcp_ack_update_window(). This means that a bulk receiver that
receives large amounts of data can have the incoming sequence numbers
wrap, so that the check in tcp_may_update_window fails:
after(ack_seq, tp->snd_wl1)
If the incoming receive windows are zero in this state, and then the
connection that was a bulk data receiver later wants to send data,
that connection can find itself persistently rejecting the window
updates in incoming ACKs. This means the connection can persistently
fail to discover that the receive window has opened, which in turn
means that the connection is unable to send anything, and the
connection's sending process can get permanently "stuck".
The fix is to update snd_wl1 in the header prediction fast path for a
bulk data receiver, so that it keeps up and does not see wrapping
problems.
This fix is based on a very nice and thorough analysis and diagnosis
by Apollon Oikonomopoulos (see link below).
This is a stable candidate but there is no Fixes tag here since the
bug predates current git history. Just for fun: looks like the bug
dates back to when header prediction was added in Linux v2.1.8 in Nov
1996. In that version tcp_rcv_established() was added, and the code
only updates snd_wl1 in tcp_ack(), and in the new "Bulk data transfer:
receiver" code path it does not call tcp_ack(). This fix seems to
apply cleanly at least as far back as v3.2.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Reported-by: Apollon Oikonomopoulos <apoikos@dmesg.gr>
Tested-by: Apollon Oikonomopoulos <apoikos@dmesg.gr>
Link: https://www.spinics.net/lists/netdev/msg692430.html
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20201022143331.1887495-1-ncardwell.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In setsockopt(SO_MAX_PACING_RATE) on 64bit systems, sk_max_pacing_rate,
after extended from 'u32' to 'unsigned long', takes unintentionally
hiked value whenever assigned from an 'int' value with MSB=1, due to
binary sign extension in promoting s32 to u64, e.g. 0x80000000 becomes
0xFFFFFFFF80000000.
Thus inflated sk_max_pacing_rate causes subsequent getsockopt to return
~0U unexpectedly. It may also result in increased pacing rate.
Fix by explicitly casting the 'int' value to 'unsigned int' before
assigning it to sk_max_pacing_rate, for zero extension to happen.
Fixes: 76a9ebe811 ("net: extend sk_pacing_rate to unsigned long")
Signed-off-by: Ji Li <jli@akamai.com>
Signed-off-by: Ke Li <keli@akamai.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20201022064146.79873-1-keli@akamai.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
1) Update debugging in IPVS tcp protocol handler to make it easier
to understand, from longguang.yue
2) Update TCP tracker to deal with keepalive packet after
re-registration, from Franceso Ruggeri.
3) Missing IP6SKB_FRAGMENTED from netfilter fragment reassembly,
from Georg Kohmann.
4) Fix bogus packet drop in ebtables nat extensions, from
Thimothee Cocault.
5) Fix typo in flowtable documentation.
6) Reset skb timestamp in nft_fwd_netdev.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Daniel Borkmann says:
====================
pull-request: bpf 2020-10-22
1) Fix enforcing NULL check in verifier for new helper return types of
RET_PTR_TO_{BTF_ID,MEM_OR_BTF_ID}_OR_NULL, from Martin KaFai Lau.
2) Fix bpf_redirect_neigh() helper API before it becomes frozen by adding
nexthop information as argument, from Toke Høiland-Jørgensen.
3) Guard & fix compilation of bpf_tail_call_static() when __bpf__ arch is
not defined by compiler or clang too old, from Daniel Borkmann.
4) Remove misplaced break after return in attach_type_to_prog_type(), from
Tom Rix.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
has the same arguments as READ but allows the server to return an array
of data and hole extents.
Otherwise it's a lot of cleanup and bugfixes.
-----BEGIN PGP SIGNATURE-----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=rcOj
-----END PGP SIGNATURE-----
Merge tag 'nfsd-5.10' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields:
"The one new feature this time, from Anna Schumaker, is READ_PLUS,
which has the same arguments as READ but allows the server to return
an array of data and hole extents.
Otherwise it's a lot of cleanup and bugfixes"
* tag 'nfsd-5.10' of git://linux-nfs.org/~bfields/linux: (43 commits)
NFSv4.2: Fix NFS4ERR_STALE error when doing inter server copy
SUNRPC: fix copying of multiple pages in gss_read_proxy_verf()
sunrpc: raise kernel RPC channel buffer size
svcrdma: fix bounce buffers for unaligned offsets and multiple pages
nfsd: remove unneeded break
net/sunrpc: Fix return value for sysctl sunrpc.transports
NFSD: Encode a full READ_PLUS reply
NFSD: Return both a hole and a data segment
NFSD: Add READ_PLUS hole segment encoding
NFSD: Add READ_PLUS data support
NFSD: Hoist status code encoding into XDR encoder functions
NFSD: Map nfserr_wrongsec outside of nfsd_dispatch
NFSD: Remove the RETURN_STATUS() macro
NFSD: Call NFSv2 encoders on error returns
NFSD: Fix .pc_release method for NFSv2
NFSD: Remove vestigial typedefs
NFSD: Refactor nfsd_dispatch() error paths
NFSD: Clean up nfsd_dispatch() variables
NFSD: Clean up stale comments in nfsd_dispatch()
NFSD: Clean up switch statement in nfsd_dispatch()
...
A couple of small fixes (loff_t overflow on 32bit, syzbot uninitialized
variable warning) and code cleanup (xen)
-----BEGIN PGP SIGNATURE-----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=ONeq
-----END PGP SIGNATURE-----
Merge tag '9p-for-5.10-rc1' of git://github.com/martinetd/linux
Pull 9p updates from Dominique Martinet:
"A couple of small fixes (loff_t overflow on 32bit, syzbot
uninitialized variable warning) and code cleanup (xen)"
* tag '9p-for-5.10-rc1' of git://github.com/martinetd/linux:
net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid
9p/xen: Fix format argument warning
9P: Cast to loff_t before multiplying
Similar to 7980d2eabd ("ipvs: clear skb->tstamp in forwarding path").
fq qdisc requires tstamp to be cleared in forwarding path.
Fixes: 8203e2d844 ("net: clear skb->tstamp in forwarding paths")
Fixes: fb420d5d91 ("tcp/fq: move back to CLOCK_MONOTONIC")
Fixes: 80b14dee2b ("net: Add a new socket option for a future transmit time.")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
"ip addr show" command execute error when we have a physical
network card with a large number of VFs
The return value of if_nlmsg_size() in rtnl_calcit() will exceed
range of u16 data type when any network cards has a larger number of
VFs. rtnl_vfinfo_size() will significant increase needed dump size when
the value of num_vfs is larger.
Eventually we get a wrong value of min_ifinfo_dump_size because of overflow
which decides the memory size needed by netlink dump and netlink_dump()
will return -EMSGSIZE because of not enough memory was allocated.
So fix it by promoting min_dump_alloc data type to u32 to
avoid whole netlink message size overflow and it's also align
with the data type of struct netlink_callback{}.min_dump_alloc
which is assigned by return value of rtnl_calcit()
Signed-off-by: Di Zhu <zhudi21@huawei.com>
Link: https://lore.kernel.org/r/20201021020053.1401-1-zhudi21@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Based on the discussion in [0], update the bpf_redirect_neigh() helper to
accept an optional parameter specifying the nexthop information. This makes
it possible to combine bpf_fib_lookup() and bpf_redirect_neigh() without
incurring a duplicate FIB lookup - since the FIB lookup helper will return
the nexthop information even if no neighbour is present, this can simply
be passed on to bpf_redirect_neigh() if bpf_fib_lookup() returns
BPF_FIB_LKUP_RET_NO_NEIGH. Thus fix & extend it before helper API is frozen.
[0] https://lore.kernel.org/bpf/393e17fc-d187-3a8d-2f0d-a627c7c63fca@iogearbox.net/
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/bpf/160322915615.32199.1187570224032024535.stgit@toke.dk
- a patch that removes crush_workspace_mutex (myself). CRUSH
computations are no longer serialized and can run in parallel.
- a couple new filesystem client metrics for "ceph fs top" command
(Xiubo Li)
- a fix for a very old messenger bug that affected the filesystem,
marked for stable (myself)
- assorted fixups and cleanups throughout the codebase from Jeff
and others.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAl+QN8cTHGlkcnlvbW92
QGdtYWlsLmNvbQAKCRBKf944AhHzi4iwCACLwUvO0ONTzUUb2D8ftfyXjo/jIod5
eO7RHfCHOP2A83GQpdYdktVDSVeOUIOiPhxAxo1dL4GieI2/saXrnoevam7ogZkA
OmR4drdtRVUqF/aATrtjiDMg2ge0dnx5gfjMxSP/FiPPpXOdrtxng/7tv8yo+03q
AlMqg/YcxO06t1M1qh9SEyfzjcHyPnJU2i0ienngxnGxQ7QiMOR6anF1LNhtN803
4fTBX2tLqDNAa+x5yF1kKSn9OmFNhc0oUsqef+Ck0Vw1LC0/SuxzE2J904iehAwy
/HzJCer0zcp+eZhn3HhoHmp0UZpOC1dzMxa3CHyRJFrxCSTEhY8iqPiJ
=wGr7
-----END PGP SIGNATURE-----
Merge tag 'ceph-for-5.10-rc1' of git://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
- a patch that removes crush_workspace_mutex (myself). CRUSH
computations are no longer serialized and can run in parallel.
- a couple new filesystem client metrics for "ceph fs top" command
(Xiubo Li)
- a fix for a very old messenger bug that affected the filesystem,
marked for stable (myself)
- assorted fixups and cleanups throughout the codebase from Jeff and
others.
* tag 'ceph-for-5.10-rc1' of git://github.com/ceph/ceph-client: (27 commits)
libceph: clear con->out_msg on Policy::stateful_server faults
libceph: format ceph_entity_addr nonces as unsigned
libceph: fix ENTITY_NAME format suggestion
libceph: move a dout in queue_con_delay()
ceph: comment cleanups and clarifications
ceph: break up send_cap_msg
ceph: drop separate mdsc argument from __send_cap
ceph: promote to unsigned long long before shifting
ceph: don't SetPageError on readpage errors
ceph: mark ceph_fmt_xattr() as printf-like for better type checking
ceph: fold ceph_update_writeable_page into ceph_write_begin
ceph: fold ceph_sync_writepages into writepage_nounlock
ceph: fold ceph_sync_readpages into ceph_readpage
ceph: don't call ceph_update_writeable_page from page_mkwrite
ceph: break out writeback of incompatible snap context to separate function
ceph: add a note explaining session reject error string
libceph: switch to the new "osd blocklist add" command
libceph, rbd, ceph: "blacklist" -> "blocklist"
ceph: have ceph_writepages_start call pagevec_lookup_range_tag
ceph: use kill_anon_super helper
...
Like TCP, MPTCP cannot be compiled as a module. Obviously, MPTCP IPv6'
support also depends on CONFIG_IPV6. But not all functions from IPv6
code are exported.
To simplify the code and reduce modifications outside MPTCP, it was
decided from the beginning to support MPTCP with IPv6 only if
CONFIG_IPV6 was built inlined. That's also why CONFIG_MPTCP_IPV6 was
created. More modifications are needed to support CONFIG_IPV6=m.
Even if it was not explicit, until recently, we were forcing CONFIG_IPV6
to be built-in because we had "select IPV6" in Kconfig. Now that we have
"depends on IPV6", we have to explicitly set "IPV6=y" to force
CONFIG_IPV6 not to be built as a module.
In other words, we can now only have CONFIG_MPTCP_IPV6=y if
CONFIG_IPV6=y.
Note that the new dependency might hide the fact IPv6 is not supported
in MPTCP even if we have CONFIG_IPV6=m. But selecting IPV6 like we did
before was forcing it to be built-in while it was maybe not what the
user wants.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: 010b430d5d ("mptcp: MPTCP_IPV6 should depend on IPV6 instead of selecting it")
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20201021105154.628257-1-matthieu.baerts@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
mpls_iptunnel is used only for mpls encapsuation, and if encaplusated
packet is larger than MTU we need mpls_gso for segmentation.
Signed-off-by: Alexander Ovechkin <ovov@yandex-team.ru>
Acked-by: Dmitry Yakunin <zeil@yandex-team.ru>
Reviewed-by: David Ahern <dsahern@gmail.com>
Link: https://lore.kernel.org/r/20201020114333.26866-1-ovov@yandex-team.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
the following command
# tc action add action tunnel_key \
> set src_ip 2001:db8::1 dst_ip 2001:db8::2 id 10 erspan_opts 1:6789:0:0
generates the following splat:
BUG: KASAN: slab-out-of-bounds in tunnel_key_copy_opts+0xcc9/0x1010 [act_tunnel_key]
Write of size 4 at addr ffff88813f5f1cc8 by task tc/873
CPU: 2 PID: 873 Comm: tc Not tainted 5.9.0+ #282
Hardware name: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066+0f1aadab 04/01/2014
Call Trace:
dump_stack+0x99/0xcb
print_address_description.constprop.7+0x1e/0x230
kasan_report.cold.13+0x37/0x7c
tunnel_key_copy_opts+0xcc9/0x1010 [act_tunnel_key]
tunnel_key_init+0x160c/0x1f40 [act_tunnel_key]
tcf_action_init_1+0x5b5/0x850
tcf_action_init+0x15d/0x370
tcf_action_add+0xd9/0x2f0
tc_ctl_action+0x29b/0x3a0
rtnetlink_rcv_msg+0x341/0x8d0
netlink_rcv_skb+0x120/0x380
netlink_unicast+0x439/0x630
netlink_sendmsg+0x719/0xbf0
sock_sendmsg+0xe2/0x110
____sys_sendmsg+0x5ba/0x890
___sys_sendmsg+0xe9/0x160
__sys_sendmsg+0xd3/0x170
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f872a96b338
Code: 89 02 48 c7 c0 ff ff ff ff eb b5 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 25 43 2c 00 8b 00 85 c0 75 17 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 41 89 d4 55
RSP: 002b:00007ffffe367518 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000005f8f5aed RCX: 00007f872a96b338
RDX: 0000000000000000 RSI: 00007ffffe367580 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000001c
R10: 000000000000000b R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000686760 R14: 0000000000000601 R15: 0000000000000000
Allocated by task 873:
kasan_save_stack+0x19/0x40
__kasan_kmalloc.constprop.7+0xc1/0xd0
__kmalloc+0x151/0x310
metadata_dst_alloc+0x20/0x40
tunnel_key_init+0xfff/0x1f40 [act_tunnel_key]
tcf_action_init_1+0x5b5/0x850
tcf_action_init+0x15d/0x370
tcf_action_add+0xd9/0x2f0
tc_ctl_action+0x29b/0x3a0
rtnetlink_rcv_msg+0x341/0x8d0
netlink_rcv_skb+0x120/0x380
netlink_unicast+0x439/0x630
netlink_sendmsg+0x719/0xbf0
sock_sendmsg+0xe2/0x110
____sys_sendmsg+0x5ba/0x890
___sys_sendmsg+0xe9/0x160
__sys_sendmsg+0xd3/0x170
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xa9
The buggy address belongs to the object at ffff88813f5f1c00
which belongs to the cache kmalloc-256 of size 256
The buggy address is located 200 bytes inside of
256-byte region [ffff88813f5f1c00, ffff88813f5f1d00)
The buggy address belongs to the page:
page:0000000011b48a19 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x13f5f0
head:0000000011b48a19 order:1 compound_mapcount:0
flags: 0x17ffffc0010200(slab|head)
raw: 0017ffffc0010200 0000000000000000 0000000d00000001 ffff888107c43400
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88813f5f1b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88813f5f1c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88813f5f1c80: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
^
ffff88813f5f1d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88813f5f1d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
using IPv6 tunnels, act_tunnel_key allocates a fixed amount of memory for
the tunnel metadata, but then it expects additional bytes to store tunnel
specific metadata with tunnel_key_copy_opts().
Fix the arguments of __ipv6_tun_set_dst(), so that 'md_size' contains the
size previously computed by tunnel_key_get_opts_len(), like it's done for
IPv4 tunnels.
Fixes: 0ed5269f9e ("net/sched: add tunnel option support to act_tunnel_key")
Reported-by: Shuang Li <shuali@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://lore.kernel.org/r/36ebe969f6d13ff59912d6464a4356fe6f103766.1603231100.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We need to jump to the "err_out_locked" label when
tcf_gate_get_entries() fails. Otherwise, tc_setup_flow_action() exits
with ->tcfa_lock still held.
Fixes: d29bdd69ec ("net: schedule: add action gate offloading")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://lore.kernel.org/r/12f60e385584c52c22863701c0185e40ab08a7a7.1603207948.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
MPTCP_IPV6 selects IPV6, thus enabling an optional feature the user may
not want to enable. Fix this by making MPTCP_IPV6 depend on IPV6, like
is done for all other IPv6 features.
Fixes: f870fa0b57 ("mptcp: Add MPTCP socket stubs")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20201020073839.29226-1-geert@linux-m68k.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Check that the NFC_ATTR_FIRMWARE_NAME attributes are provided by
the netlink client prior to accessing them.This prevents potential
unhandled NULL pointer dereference exceptions which can be triggered
by malicious user-mode programs, if they omit one or both of these
attributes.
Similar to commit a0323b979f ("nfc: Ensure presence of required attributes in the activate_target handler").
Fixes: 9674da8759 ("NFC: Add firmware upload netlink command")
Signed-off-by: Defang Bo <bodefang@126.com>
Link: https://lore.kernel.org/r/1603107538-4744-1-git-send-email-bodefang@126.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
MPTCP_KUNIT_TESTS selects MPTCP, thus enabling an optional feature the
user may not want to enable. Fix this by making the test depend on
MPTCP instead.
Fixes: a00a582203 ("mptcp: move crypto test to KUNIT")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20201019113240.11516-1-geert@linux-m68k.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Move mptcp_options_received's port initialization from
mptcp_parse_option to mptcp_get_options, put it together with
the other fields initializations of mptcp_options_received.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Initialize mptcp_options_received's ahmac to zero, otherwise it
will be a random number when receiving ADD_ADDR suboption with echo-flag=1.
Fixes: 3df523ab58 ("mptcp: Add ADD_ADDR handling")
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Need to use the udp header type and not tcp.
Fixes: 9c26ba9b1f ("net/sched: act_ct: Instantiate flow table entry actions")
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Paul Blakey <paulb@nvidia.com>
Link: https://lore.kernel.org/r/20201019090244.3015186-1-roid@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Stable Fixes:
- Wait for stateid updates after CLOSE/OPEN_DOWNGRADE # v5.4+
- Fix nfs_path in case of a rename retry
- Support EXCHID4_FLAG_SUPP_FENCE_OPS v4.2 EXCHANGE_ID flag
- New features and improvements:
- Replace dprintk() calls with tracepoints
- Make cache consistency bitmap dynamic
- Added support for the NFS v4.2 READ_PLUS operation
- Improvements to net namespace uniquifier
- Other bugfixes and cleanups
- Remove redundant clnt pointer
- Don't update timeout values on connection resets
- Remove redundant tracepoints
- Various cleanups to comments
- Fix oops when trying to use copy_file_range with v4.0 source server
- Improvements to flexfiles mirrors
- Add missing "local_lock=posix" mount option
-----BEGIN PGP SIGNATURE-----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=6RM5
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-5.10-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"Stable Fixes:
- Wait for stateid updates after CLOSE/OPEN_DOWNGRADE # v5.4+
- Fix nfs_path in case of a rename retry
- Support EXCHID4_FLAG_SUPP_FENCE_OPS v4.2 EXCHANGE_ID flag
New features and improvements:
- Replace dprintk() calls with tracepoints
- Make cache consistency bitmap dynamic
- Added support for the NFS v4.2 READ_PLUS operation
- Improvements to net namespace uniquifier
Other bugfixes and cleanups:
- Remove redundant clnt pointer
- Don't update timeout values on connection resets
- Remove redundant tracepoints
- Various cleanups to comments
- Fix oops when trying to use copy_file_range with v4.0 source server
- Improvements to flexfiles mirrors
- Add missing 'local_lock=posix' mount option"
* tag 'nfs-for-5.10-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (55 commits)
NFSv4.2: support EXCHGID4_FLAG_SUPP_FENCE_OPS 4.2 EXCHANGE_ID flag
NFSv4: Fix up RCU annotations for struct nfs_netns_client
NFS: Only reference user namespace from nfs4idmap struct instead of cred
nfs: add missing "posix" local_lock constant table definition
NFSv4: Use the net namespace uniquifier if it is set
NFSv4: Clean up initialisation of uniquified client id strings
NFS: Decode a full READ_PLUS reply
SUNRPC: Add an xdr_align_data() function
NFS: Add READ_PLUS hole segment decoding
SUNRPC: Add the ability to expand holes in data pages
SUNRPC: Split out _shift_data_right_tail()
SUNRPC: Split out xdr_realign_pages() from xdr_align_pages()
NFS: Add READ_PLUS data segment support
NFS: Use xdr_page_pos() in NFSv4 decode_getacl()
SUNRPC: Implement a xdr_page_pos() function
SUNRPC: Split out a function for setting current page
NFS: fix nfs_path in case of a rename retry
fs: nfs: return per memcg count for xattr shrinkers
NFSv4: Wait for stateid updates after CLOSE/OPEN_DOWNGRADE
nfs: remove incorrect fallthrough label
...
When the passed token is longer than 4032 bytes, the remaining part
of the token must be copied from the rqstp->rq_arg.pages. But the
copy must make sure it happens in a consecutive way.
With the existing code, the first memcpy copies 'length' bytes from
argv->iobase, but since the header is in front, this never fills the
whole first page of in_token->pages.
The mecpy in the loop copies the following bytes, but starts writing at
the next page of in_token->pages. This leaves the last bytes of page 0
unwritten.
Symptoms were that users with many groups were not able to access NFS
exports, when using Active Directory as the KDC.
Signed-off-by: Martijn de Gouw <martijn.de.gouw@prodrive-technologies.com>
Fixes: 5866efa8cb "SUNRPC: Fix svcauth_gss_proxy_init()"
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Its possible that using AUTH_SYS and mountd manage-gids option a
user may hit the 8k RPC channel buffer limit. This have been observed
on field, causing unanswered RPCs on clients after mountd fails to
write on channel :
rpc.mountd[11231]: auth_unix_gid: error writing reply
Userland nfs-utils uses a buffer size of 32k (RPC_CHAN_BUF_SIZE), so
lets match those two.
Signed-off-by: Roberto Bergantinos Corpas <rbergant@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This patch fixes the issue due to:
BUG: KASAN: slab-out-of-bounds in nft_flow_rule_create+0x622/0x6a2
net/netfilter/nf_tables_offload.c:40
Read of size 8 at addr ffff888103910b58 by task syz-executor227/16244
The error happens when expr->ops is accessed early on before performing the boundary check and after nft_expr_next() moves the expr to go out-of-bounds.
This patch checks the boundary condition before expr->ops that fixes the slab-out-of-bounds Read issue.
Add nft_expr_more() and use it to fix this problem.
Signed-off-by: Saeed Mirzamohammadi <saeed.mirzamohammadi@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Fixes an error causing small packets to get dropped. skb_ensure_writable
expects the second parameter to be a length in the ethernet payload.=20
If we want to write the ethernet header (src, dst), we should pass 0.
Otherwise, packets with small payloads (< ETH_ALEN) will get dropped.
Fixes: c1a8311679 ("netfilter: bridge: convert skb_make_writable to skb_ensure_writable")
Signed-off-by: Timothée COCAULT <timothee.cocault@orange.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Fragmented ndisc packets assembled in netfilter not dropped as specified
in RFC 6980, section 5. This behaviour breaks TAHI IPv6 Core Conformance
Tests v6LC.2.1.22/23, V6LC.2.2.26/27 and V6LC.2.3.18.
Setting IP6SKB_FRAGMENTED flag during reassembly.
References: commit b800c3b966 ("ipv6: drop fragmented ndisc packets by default (RFC 6980)")
Signed-off-by: Georg Kohmann <geokohma@cisco.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
If the first packet conntrack sees after a re-register is an outgoing
keepalive packet with no data (SEG.SEQ = SND.NXT-1), td_end is set to
SND.NXT-1.
When the peer correctly acknowledges SND.NXT, tcp_in_window fails
check III (Upper bound for valid (s)ack: sack <= receiver.td_end) and
returns false, which cascades into nf_conntrack_in setting
skb->_nfct = 0 and in later conntrack iptables rules not matching.
In cases where iptables are dropping packets that do not match
conntrack rules this can result in idle tcp connections to time out.
v2: adjust td_end when getting the reply rather than when sending out
the keepalive packet.
Fixes: f94e63801a ("netfilter: conntrack: reset tcp maxwin on re-register")
Signed-off-by: Francesco Ruggeri <fruggeri@arista.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Outputting client,virtual,dst addresses info when tcp state changes,
which makes the connection debug more clear
Signed-off-by: longguang.yue <bigclouds@163.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
While insertion of 16k nexthops all using the same netdev ('dummy10')
takes less than a second, deletion takes about 130 seconds:
# time -p ip -b nexthop.batch
real 0.29
user 0.01
sys 0.15
# time -p ip link set dev dummy10 down
real 131.03
user 0.06
sys 0.52
This is because of repeated calls to synchronize_rcu() whenever a
nexthop is removed from a nexthop group:
# /usr/share/bcc/tools/offcputime -p `pgrep -nx ip` -K
...
b'finish_task_switch'
b'schedule'
b'schedule_timeout'
b'wait_for_completion'
b'__wait_rcu_gp'
b'synchronize_rcu.part.0'
b'synchronize_rcu'
b'__remove_nexthop'
b'remove_nexthop'
b'nexthop_flush_dev'
b'nh_netdev_event'
b'raw_notifier_call_chain'
b'call_netdevice_notifiers_info'
b'__dev_notify_flags'
b'dev_change_flags'
b'do_setlink'
b'__rtnl_newlink'
b'rtnl_newlink'
b'rtnetlink_rcv_msg'
b'netlink_rcv_skb'
b'rtnetlink_rcv'
b'netlink_unicast'
b'netlink_sendmsg'
b'____sys_sendmsg'
b'___sys_sendmsg'
b'__sys_sendmsg'
b'__x64_sys_sendmsg'
b'do_syscall_64'
b'entry_SYSCALL_64_after_hwframe'
- ip (277)
126554955
Since nexthops are always deleted under RTNL, synchronize_net() can be
used instead. It will call synchronize_rcu_expedited() which only blocks
for several microseconds as opposed to multiple milliseconds like
synchronize_rcu().
With this patch deletion of 16k nexthops takes less than a second:
# time -p ip link set dev dummy10 down
real 0.12
user 0.00
sys 0.04
Tested with fib_nexthops.sh which includes torture tests that prompted
the initial change:
# ./fib_nexthops.sh
...
Tests passed: 134
Tests failed: 0
Fixes: 90f33bffa3 ("nexthops: don't modify published nexthop groups")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://lore.kernel.org/r/20201016172914.643282-1-idosch@idosch.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The Marvell 88E6060 uses tag_trailer.c and the KSZ8795, KSZ9477 and
KSZ9893 switches also use tail tags.
Fixes: 7a6ffe764b ("net: dsa: point out the tail taggers")
Signed-off-by: Christian Eggers <ceggers@arri.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20201016171603.10587-1-ceggers@arri.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The flow_lookup() function uses per CPU variables, which must be called
with BH disabled. However, this is fine in the general NAPI use case
where the local BH is disabled. But, it's also called from the netlink
context. The below patch makes sure that even in the netlink path, the
BH is disabled.
In addition, u64_stats_update_begin() requires a lock to ensure one writer
which is not ensured here. Making it per-CPU and disabling NAPI (softirq)
ensures that there is always only one writer.
Fixes: eac87c413b ("net: openvswitch: reorder masks array based on usage")
Reported-by: Juri Lelli <jlelli@redhat.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Link: https://lore.kernel.org/r/160295903253.7789.826736662555102345.stgit@ebuild
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Keyu Man reported that the ICMP rate limiter could be used
by attackers to get useful signal. Details will be provided
in an upcoming academic publication.
Our solution is to add some noise, so that the attackers
no longer can get help from the predictable token bucket limiter.
Fixes: 4cdf507d54 ("icmp: add a global rate limitation")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Keyu Man <kman001@ucr.edu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In commit 16ad3f4022
("tipc: introduce variable window congestion control"), we applied
the algorithm to select window size from minimum window to the
configured maximum window for unicast link, and, besides we chose
to keep the window size for broadcast link unchanged and equal (i.e
fix window 50)
However, when setting maximum window variable via command, the window
variable was re-initialized to unexpect value (i.e 32).
We fix this by updating the fix window for broadcast as we stated.
Fixes: 16ad3f4022 ("tipc: introduce variable window congestion control")
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Huu Le <hoang.h.le@dektech.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The queue limit of the broadcast link is being calculated base on initial
MTU. However, when MTU value changed (e.g manual changing MTU on NIC
device, MTU negotiation etc.,) we do not re-calculate queue limit.
This gives throughput does not reflect with the change.
So fix it by calling the function to re-calculate queue limit of the
broadcast link.
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Huu Le <hoang.h.le@dektech.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This was discovered using O_DIRECT at the client side, with small
unaligned file offsets or IOs that span multiple file pages.
Fixes: e248aa7be8 ("svcrdma: Remove max_sge check at connect time")
Signed-off-by: Dan Aloni <dan@kernelim.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Fix returning value for sysctl sunrpc.transports.
Return error code from sysctl proc_handler function proc_do_xprt instead of number of the written bytes.
Otherwise sysctl returns random garbage for this key.
Since v1:
- Handle negative returned value from memory_read_from_buffer as an error
Signed-off-by: Artur Molchanov <arturmolchanov@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Add redirect_neigh() BPF packet redirect helper, allowing to limit stack
traversal in common container configs and improving TCP back-pressure.
Daniel reports ~10Gbps => ~15Gbps single stream TCP performance gain.
Expand netlink policy support and improve policy export to user space.
(Ge)netlink core performs request validation according to declared
policies. Expand the expressiveness of those policies (min/max length
and bitmasks). Allow dumping policies for particular commands.
This is used for feature discovery by user space (instead of kernel
version parsing or trial and error).
Support IGMPv3/MLDv2 multicast listener discovery protocols in bridge.
Allow more than 255 IPv4 multicast interfaces.
Add support for Type of Service (ToS) reflection in SYN/SYN-ACK
packets of TCPv6.
In Multi-patch TCP (MPTCP) support concurrent transmission of data
on multiple subflows in a load balancing scenario. Enhance advertising
addresses via the RM_ADDR/ADD_ADDR options.
Support SMC-Dv2 version of SMC, which enables multi-subnet deployments.
Allow more calls to same peer in RxRPC.
Support two new Controller Area Network (CAN) protocols -
CAN-FD and ISO 15765-2:2016.
Add xfrm/IPsec compat layer, solving the 32bit user space on 64bit
kernel problem.
Add TC actions for implementing MPLS L2 VPNs.
Improve nexthop code - e.g. handle various corner cases when nexthop
objects are removed from groups better, skip unnecessary notifications
and make it easier to offload nexthops into HW by converting
to a blocking notifier.
Support adding and consuming TCP header options by BPF programs,
opening the doors for easy experimental and deployment-specific
TCP option use.
Reorganize TCP congestion control (CC) initialization to simplify life
of TCP CC implemented in BPF.
Add support for shipping BPF programs with the kernel and loading them
early on boot via the User Mode Driver mechanism, hence reusing all the
user space infra we have.
Support sleepable BPF programs, initially targeting LSM and tracing.
Add bpf_d_path() helper for returning full path for given 'struct path'.
Make bpf_tail_call compatible with bpf-to-bpf calls.
Allow BPF programs to call map_update_elem on sockmaps.
Add BPF Type Format (BTF) support for type and enum discovery, as
well as support for using BTF within the kernel itself (current use
is for pretty printing structures).
Support listing and getting information about bpf_links via the bpf
syscall.
Enhance kernel interfaces around NIC firmware update. Allow specifying
overwrite mask to control if settings etc. are reset during update;
report expected max time operation may take to users; support firmware
activation without machine reboot incl. limits of how much impact
reset may have (e.g. dropping link or not).
Extend ethtool configuration interface to report IEEE-standard
counters, to limit the need for per-vendor logic in user space.
Adopt or extend devlink use for debug, monitoring, fw update
in many drivers (dsa loop, ice, ionic, sja1105, qed, mlxsw,
mv88e6xxx, dpaa2-eth).
In mlxsw expose critical and emergency SFP module temperature alarms.
Refactor port buffer handling to make the defaults more suitable and
support setting these values explicitly via the DCBNL interface.
Add XDP support for Intel's igb driver.
Support offloading TC flower classification and filtering rules to
mscc_ocelot switches.
Add PTP support for Marvell Octeontx2 and PP2.2 hardware, as well as
fixed interval period pulse generator and one-step timestamping in
dpaa-eth.
Add support for various auth offloads in WiFi APs, e.g. SAE (WPA3)
offload.
Add Lynx PHY/PCS MDIO module, and convert various drivers which have
this HW to use it. Convert mvpp2 to split PCS.
Support Marvell Prestera 98DX3255 24-port switch ASICs, as well as
7-port Mediatek MT7531 IP.
Add initial support for QCA6390 and IPQ6018 in ath11k WiFi driver,
and wcn3680 support in wcn36xx.
Improve performance for packets which don't require much offloads
on recent Mellanox NICs by 20% by making multiple packets share
a descriptor entry.
Move chelsio inline crypto drivers (for TLS and IPsec) from the crypto
subtree to drivers/net. Move MDIO drivers out of the phy directory.
Clean up a lot of W=1 warnings, reportedly the actively developed
subsections of networking drivers should now build W=1 warning free.
Make sure drivers don't use in_interrupt() to dynamically adapt their
code. Convert tasklets to use new tasklet_setup API (sadly this
conversion is not yet complete).
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----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=bc1U
-----END PGP SIGNATURE-----
Merge tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
- Add redirect_neigh() BPF packet redirect helper, allowing to limit
stack traversal in common container configs and improving TCP
back-pressure.
Daniel reports ~10Gbps => ~15Gbps single stream TCP performance gain.
- Expand netlink policy support and improve policy export to user
space. (Ge)netlink core performs request validation according to
declared policies. Expand the expressiveness of those policies
(min/max length and bitmasks). Allow dumping policies for particular
commands. This is used for feature discovery by user space (instead
of kernel version parsing or trial and error).
- Support IGMPv3/MLDv2 multicast listener discovery protocols in
bridge.
- Allow more than 255 IPv4 multicast interfaces.
- Add support for Type of Service (ToS) reflection in SYN/SYN-ACK
packets of TCPv6.
- In Multi-patch TCP (MPTCP) support concurrent transmission of data on
multiple subflows in a load balancing scenario. Enhance advertising
addresses via the RM_ADDR/ADD_ADDR options.
- Support SMC-Dv2 version of SMC, which enables multi-subnet
deployments.
- Allow more calls to same peer in RxRPC.
- Support two new Controller Area Network (CAN) protocols - CAN-FD and
ISO 15765-2:2016.
- Add xfrm/IPsec compat layer, solving the 32bit user space on 64bit
kernel problem.
- Add TC actions for implementing MPLS L2 VPNs.
- Improve nexthop code - e.g. handle various corner cases when nexthop
objects are removed from groups better, skip unnecessary
notifications and make it easier to offload nexthops into HW by
converting to a blocking notifier.
- Support adding and consuming TCP header options by BPF programs,
opening the doors for easy experimental and deployment-specific TCP
option use.
- Reorganize TCP congestion control (CC) initialization to simplify
life of TCP CC implemented in BPF.
- Add support for shipping BPF programs with the kernel and loading
them early on boot via the User Mode Driver mechanism, hence reusing
all the user space infra we have.
- Support sleepable BPF programs, initially targeting LSM and tracing.
- Add bpf_d_path() helper for returning full path for given 'struct
path'.
- Make bpf_tail_call compatible with bpf-to-bpf calls.
- Allow BPF programs to call map_update_elem on sockmaps.
- Add BPF Type Format (BTF) support for type and enum discovery, as
well as support for using BTF within the kernel itself (current use
is for pretty printing structures).
- Support listing and getting information about bpf_links via the bpf
syscall.
- Enhance kernel interfaces around NIC firmware update. Allow
specifying overwrite mask to control if settings etc. are reset
during update; report expected max time operation may take to users;
support firmware activation without machine reboot incl. limits of
how much impact reset may have (e.g. dropping link or not).
- Extend ethtool configuration interface to report IEEE-standard
counters, to limit the need for per-vendor logic in user space.
- Adopt or extend devlink use for debug, monitoring, fw update in many
drivers (dsa loop, ice, ionic, sja1105, qed, mlxsw, mv88e6xxx,
dpaa2-eth).
- In mlxsw expose critical and emergency SFP module temperature alarms.
Refactor port buffer handling to make the defaults more suitable and
support setting these values explicitly via the DCBNL interface.
- Add XDP support for Intel's igb driver.
- Support offloading TC flower classification and filtering rules to
mscc_ocelot switches.
- Add PTP support for Marvell Octeontx2 and PP2.2 hardware, as well as
fixed interval period pulse generator and one-step timestamping in
dpaa-eth.
- Add support for various auth offloads in WiFi APs, e.g. SAE (WPA3)
offload.
- Add Lynx PHY/PCS MDIO module, and convert various drivers which have
this HW to use it. Convert mvpp2 to split PCS.
- Support Marvell Prestera 98DX3255 24-port switch ASICs, as well as
7-port Mediatek MT7531 IP.
- Add initial support for QCA6390 and IPQ6018 in ath11k WiFi driver,
and wcn3680 support in wcn36xx.
- Improve performance for packets which don't require much offloads on
recent Mellanox NICs by 20% by making multiple packets share a
descriptor entry.
- Move chelsio inline crypto drivers (for TLS and IPsec) from the
crypto subtree to drivers/net. Move MDIO drivers out of the phy
directory.
- Clean up a lot of W=1 warnings, reportedly the actively developed
subsections of networking drivers should now build W=1 warning free.
- Make sure drivers don't use in_interrupt() to dynamically adapt their
code. Convert tasklets to use new tasklet_setup API (sadly this
conversion is not yet complete).
* tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2583 commits)
Revert "bpfilter: Fix build error with CONFIG_BPFILTER_UMH"
net, sockmap: Don't call bpf_prog_put() on NULL pointer
bpf, selftest: Fix flaky tcp_hdr_options test when adding addr to lo
bpf, sockmap: Add locking annotations to iterator
netfilter: nftables: allow re-computing sctp CRC-32C in 'payload' statements
net: fix pos incrementment in ipv6_route_seq_next
net/smc: fix invalid return code in smcd_new_buf_create()
net/smc: fix valid DMBE buffer sizes
net/smc: fix use-after-free of delayed events
bpfilter: Fix build error with CONFIG_BPFILTER_UMH
cxgb4/ch_ipsec: Replace the module name to ch_ipsec from chcr
net: sched: Fix suspicious RCU usage while accessing tcf_tunnel_info
bpf: Fix register equivalence tracking.
rxrpc: Fix loss of final ack on shutdown
rxrpc: Fix bundle counting for exclusive connections
netfilter: restore NF_INET_NUMHOOKS
ibmveth: Identify ingress large send packets.
ibmveth: Switch order of ibmveth_helper calls.
cxgb4: handle 4-tuple PEDIT to NAT mode translation
selftests: Add VRF route leaking tests
...
Daniel Borkmann says:
====================
pull-request: bpf-next 2020-10-15
The main changes are:
1) Fix register equivalence tracking in verifier, from Alexei Starovoitov.
2) Fix sockmap error path to not call bpf_prog_put() with NULL, from Alex Dewar.
3) Fix sockmap to add locking annotations to iterator, from Lorenz Bauer.
4) Fix tcp_hdr_options test to use loopback address, from Martin KaFai Lau.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Minor conflicts in net/mptcp/protocol.h and
tools/testing/selftests/net/Makefile.
In both cases code was added on both sides in the same place
so just keep both.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This reverts commit 1d273fcc2c.
Alexei points out there's nothing implying headers will be built
and therefore exist under usr/include, so this fix doesn't make
much sense.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If bpf_prog_inc_not_zero() fails for skb_parser, then bpf_prog_put() is
called unconditionally on skb_verdict, even though it may be NULL. Fix
and tidy up error path.
Fixes: 743df8b774 ("bpf, sockmap: Check skb_verdict and skb_parser programs explicitly")
Addresses-Coverity-ID: 1497799: Null pointer dereferences (FORWARD_NULL)
Signed-off-by: Alex Dewar <alex.dewar90@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20201012170952.60750-1-alex.dewar90@gmail.com
The sparse checker currently outputs the following warnings:
include/linux/rcupdate.h:632:9: sparse: sparse: context imbalance in 'sock_hash_seq_start' - wrong count at exit
include/linux/rcupdate.h:632:9: sparse: sparse: context imbalance in 'sock_map_seq_start' - wrong count at exit
Add the necessary __acquires and __release annotations to make the
iterator locking schema palatable to sparse. Also add __must_hold
for good measure.
The kernel codebase uses both __acquires(rcu) and __acquires(RCU).
I couldn't find any guidance which one is preferred, so I used
what is easier to type out.
Fixes: 0365351524 ("net: Allow iterating sockmap and sockhash")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20201012091850.67452-1-lmb@cloudflare.com
nftables payload statements are used to mangle SCTP headers, but they can
only replace the Internet Checksum. As a consequence, nftables rules that
mangle sport/dport/vtag in SCTP headers potentially generate packets that
are discarded by the receiver, unless the CRC-32C is "offloaded" (e.g the
rule mangles a skb having 'ip_summed' equal to 'CHECKSUM_PARTIAL'.
Fix this extending uAPI definitions and L4 checksum update function, in a
way that userspace programs (e.g. nft) can instruct the kernel to compute
CRC-32C in SCTP headers. Also ensure that LIBCRC32C is built if NF_TABLES
is 'y' or 'm' in the kernel build configuration.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 4fc427e051 ("ipv6_route_seq_next should increase position index")
tried to fix the issue where seq_file pos is not increased
if a NULL element is returned with seq_ops->next(). See bug
https://bugzilla.kernel.org/show_bug.cgi?id=206283
The commit effectively does:
- increase pos for all seq_ops->start()
- increase pos for all seq_ops->next()
For ipv6_route, increasing pos for all seq_ops->next() is correct.
But increasing pos for seq_ops->start() is not correct
since pos is used to determine how many items to skip during
seq_ops->start():
iter->skip = *pos;
seq_ops->start() just fetches the *current* pos item.
The item can be skipped only after seq_ops->show() which essentially
is the beginning of seq_ops->next().
For example, I have 7 ipv6 route entries,
root@arch-fb-vm1:~/net-next dd if=/proc/net/ipv6_route bs=4096
00000000000000000000000000000000 40 00000000000000000000000000000000 00 00000000000000000000000000000000 00000400 00000001 00000000 00000001 eth0
fe800000000000000000000000000000 40 00000000000000000000000000000000 00 00000000000000000000000000000000 00000100 00000001 00000000 00000001 eth0
00000000000000000000000000000000 00 00000000000000000000000000000000 00 00000000000000000000000000000000 ffffffff 00000001 00000000 00200200 lo
00000000000000000000000000000001 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000003 00000000 80200001 lo
fe800000000000002050e3fffebd3be8 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000002 00000000 80200001 eth0
ff000000000000000000000000000000 08 00000000000000000000000000000000 00 00000000000000000000000000000000 00000100 00000004 00000000 00000001 eth0
00000000000000000000000000000000 00 00000000000000000000000000000000 00 00000000000000000000000000000000 ffffffff 00000001 00000000 00200200 lo
0+1 records in
0+1 records out
1050 bytes (1.0 kB, 1.0 KiB) copied, 0.00707908 s, 148 kB/s
root@arch-fb-vm1:~/net-next
In the above, I specify buffer size 4096, so all records can be returned
to user space with a single trip to the kernel.
If I use buffer size 128, since each record size is 149, internally
kernel seq_read() will read 149 into its internal buffer and return the data
to user space in two read() syscalls. Then user read() syscall will trigger
next seq_ops->start(). Since the current implementation increased pos even
for seq_ops->start(), it will skip record #2, #4 and #6, assuming the first
record is #1.
root@arch-fb-vm1:~/net-next dd if=/proc/net/ipv6_route bs=128
00000000000000000000000000000000 40 00000000000000000000000000000000 00 00000000000000000000000000000000 00000400 00000001 00000000 00000001 eth0
00000000000000000000000000000000 00 00000000000000000000000000000000 00 00000000000000000000000000000000 ffffffff 00000001 00000000 00200200 lo
fe800000000000002050e3fffebd3be8 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000002 00000000 80200001 eth0
00000000000000000000000000000000 00 00000000000000000000000000000000 00 00000000000000000000000000000000 ffffffff 00000001 00000000 00200200 lo
4+1 records in
4+1 records out
600 bytes copied, 0.00127758 s, 470 kB/s
To fix the problem, create a fake pos pointer so seq_ops->start()
won't actually increase seq_file pos. With this fix, the
above `dd` command with `bs=128` will show correct result.
Fixes: 4fc427e051 ("ipv6_route_seq_next should increase position index")
Cc: Alexei Starovoitov <ast@kernel.org>
Suggested-by: Vasily Averin <vvs@virtuozzo.com>
Reviewed-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
smc_ism_register_dmb() returns error codes set by the ISM driver which
are not guaranteed to be negative or in the errno range. Such values
would not be handled by ERR_PTR() and finally the return code will be
used as a memory address.
Fix that by using a valid negative errno value with ERR_PTR().
Fixes: 72b7f6c487 ("net/smc: unique reason code for exceeded max dmb count")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The SMCD_DMBE_SIZES should include all valid DMBE buffer sizes, so the
correct value is 6 which means 1MB. With 7 the registration of an ISM
buffer would always fail because of the invalid size requested.
Fix that and set the value to 6.
Fixes: c6ba7c9ba4 ("net/smc: add base infrastructure for SMC-D and ISM")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When a delayed event is enqueued then the event worker will send this
event the next time it is running and no other flow is currently
active. The event handler is called for the delayed event, and the
pointer to the event keeps set in lgr->delayed_event. This pointer is
cleared later in the processing by smc_llc_flow_start().
This can lead to a use-after-free condition when the processing does not
reach smc_llc_flow_start(), but frees the event because of an error
situation. Then the delayed_event pointer is still set but the event is
freed.
Fix this by always clearing the delayed event pointer when the event is
provided to the event handler for processing, and remove the code to
clear it in smc_llc_flow_start().
Fixes: 555da9af82 ("net/smc: add event-based llc_flow framework")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
IF CONFIG_BPFILTER_UMH is set, building fails:
In file included from /usr/include/sys/socket.h:33:0,
from net/bpfilter/main.c:6:
/usr/include/bits/socket.h:390:10: fatal error: asm/socket.h: No such file or directory
#include <asm/socket.h>
^~~~~~~~~~~~~~
compilation terminated.
scripts/Makefile.userprogs:43: recipe for target 'net/bpfilter/main.o' failed
make[2]: *** [net/bpfilter/main.o] Error 1
Add missing include path to fix this.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fix the loss of transmission of a call's final ack when a socket gets shut
down. This means that the server will retransmit the last data packet or
send a ping ack and then get an ICMP indicating the port got closed. The
server will then view this as a failure.
Fixes: 3136ef49a1 ("rxrpc: Delay terminal ACK transmission on a client call")
Signed-off-by: David Howells <dhowells@redhat.com>
Fix rxrpc_unbundle_conn() to not drop the bundle usage count when cleaning
up an exclusive connection.
Based on the suggested fix from Hillf Danton.
Fixes: 245500d853 ("rxrpc: Rewrite the client connection manager")
Reported-by: syzbot+d57aaf84dd8a550e6d91@syzkaller.appspotmail.com
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Hillf Danton <hdanton@sina.com>
This definition is used by the iptables legacy UAPI, restore it.
Fixes: d3519cb89f ("netfilter: nf_tables: add inet ingress support")
Reported-by: Jason A. Donenfeld <Jason@zx2c4.com>
Tested-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As per RFC4443, the destination address field for ICMPv6 error messages
is copied from the source address field of the invoking packet.
In configurations with Virtual Routing and Forwarding tables, looking up
which routing table to use for sending ICMPv6 error messages is
currently done by using the destination net_device.
If the source and destination interfaces are within separate VRFs, or
one in the global routing table and the other in a VRF, looking up the
source address of the invoking packet in the destination interface's
routing table will fail if the destination interface's routing table
contains no route to the invoking packet's source address.
One observable effect of this issue is that traceroute6 does not work in
the following cases:
- Route leaking between global routing table and VRF
- Route leaking between VRFs
Use the source device routing table when sending ICMPv6 error
messages.
[ In the context of ipv4, it has been pointed out that a similar issue
may exist with ICMP errors triggered when forwarding between network
namespaces. It would be worthwhile to investigate whether ipv6 has
similar issues, but is outside of the scope of this investigation. ]
[ Testing shows that similar issues exist with ipv6 unreachable /
fragmentation needed messages. However, investigation of this
additional failure mode is beyond this investigation's scope. ]
Link: https://tools.ietf.org/html/rfc4443
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As per RFC792, ICMP errors should be sent to the source host.
However, in configurations with Virtual Routing and Forwarding tables,
looking up which routing table to use is currently done by using the
destination net_device.
commit 9d1a6c4ea4 ("net: icmp_route_lookup should use rt dev to
determine L3 domain") changes the interface passed to
l3mdev_master_ifindex() and inet_addr_type_dev_table() from skb_in->dev
to skb_dst(skb_in)->dev. This effectively uses the destination device
rather than the source device for choosing which routing table should be
used to lookup where to send the ICMP error.
Therefore, if the source and destination interfaces are within separate
VRFs, or one in the global routing table and the other in a VRF, looking
up the source host in the destination interface's routing table will
fail if the destination interface's routing table contains no route to
the source host.
One observable effect of this issue is that traceroute does not work in
the following cases:
- Route leaking between global routing table and VRF
- Route leaking between VRFs
Preferably use the source device routing table when sending ICMP error
messages. If no source device is set, fall-back on the destination
device routing table. Else, use the main routing table (index 0).
[ It has been pointed out that a similar issue may exist with ICMP
errors triggered when forwarding between network namespaces. It would
be worthwhile to investigate, but is outside of the scope of this
investigation. ]
[ It has also been pointed out that a similar issue exists with
unreachable / fragmentation needed messages, which can be triggered by
changing the MTU of eth1 in r1 to 1400 and running:
ip netns exec h1 ping -s 1450 -Mdo -c1 172.16.2.2
Some investigation points to raw_icmp_error() and raw_err() as being
involved in this last scenario. The focus of this patch is TTL expired
ICMP messages, which go through icmp_route_lookup.
Investigation of failure modes related to raw_icmp_error() is beyond
this investigation's scope. ]
Fixes: 9d1a6c4ea4 ("net: icmp_route_lookup should use rt dev to determine L3 domain")
Link: https://tools.ietf.org/html/rfc792
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
1) Extend nf_queue selftest to cover re-queueing, non-gso mode and
delayed queueing, from Florian Westphal.
2) Clear skb->tstamp in IPVS forwarding path, from Julian Anastasov.
3) Provide netlink extended error reporting for EEXIST case.
4) Missing VLAN offload tag and proto in log target.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
GRE tunnel has its own header_ops, ipgre_header_ops, and sets it
conditionally. When it is set, it assumes the outer IP header is
already created before ipgre_xmit().
This is not true when we send packets through a raw packet socket,
where L2 headers are supposed to be constructed by user. Packet
socket calls dev_validate_header() to validate the header. But
GRE tunnel does not set dev->hard_header_len, so that check can
be simply bypassed, therefore uninit memory could be passed down
to ipgre_xmit(). Similar for dev->needed_headroom.
dev->hard_header_len is supposed to be the length of the header
created by dev->header_ops->create(), so it should be used whenever
header_ops is set, and dev->needed_headroom should be used when it
is not set.
Reported-and-tested-by: syzbot+4a2c52677a8a1aa283cb@syzkaller.appspotmail.com
Cc: William Tu <u9012063@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Simplify the code by using new function dev_fetch_sw_netstats().
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/b6047017-8226-6b7e-a3cd-064e69fdfa27@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In several places the same code is used to populate rtnl_link_stats64
fields with data from pcpu_sw_netstats. Therefore factor out this code
to a new function dev_fetch_sw_netstats().
v2:
- constify argument netstats
- don't ignore netstats being NULL or an ERRPTR
- switch to EXPORT_SYMBOL_GPL
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/6d16a338-52f5-df69-0020-6bc771a7d498@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 109f6e39fa ("af_unix: Allow SO_PEERCRED
to work across namespaces.") introduced the old_pid variable
in unix_listen, but it's never used.
Remove the declaration and the call to put_pid.
Signed-off-by: Or Cohen <orcohen@paloaltonetworks.com>
Link: https://lore.kernel.org/r/20201011153527.18628-1-orcohen@paloaltonetworks.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
SOCK_TSTAMP_NEW (timespec64 instead of timespec) is also used for
hardware time stamps (configured via SO_TIMESTAMPING_NEW).
User space (ptp4l) first configures hardware time stamping via
SO_TIMESTAMPING_NEW which sets SOCK_TSTAMP_NEW. In the next step, ptp4l
disables SO_TIMESTAMPNS(_NEW) (software time stamps), but this must not
switch hardware time stamps back to "32 bit mode".
This problem happens on 32 bit platforms were the libc has already
switched to struct timespec64 (from SO_TIMExxx_OLD to SO_TIMExxx_NEW
socket options). ptp4l complains with "missing timestamp on transmitted
peer delay request" because the wrong format is received (and
discarded).
Fixes: 887feae36a ("socket: Add SO_TIMESTAMP[NS]_NEW")
Fixes: 783da70e83 ("net: add sock_enable_timestamps")
Signed-off-by: Christian Eggers <ceggers@arri.de>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The comparison of optname with SO_TIMESTAMPING_NEW is wrong way around,
so SOCK_TSTAMP_NEW will first be set and than reset again. Additionally
move it out of the test for SOF_TIMESTAMPING_RX_SOFTWARE as this seems
unrelated.
This problem happens on 32 bit platforms were the libc has already
switched to struct timespec64 (from SO_TIMExxx_OLD to SO_TIMExxx_NEW
socket options). ptp4l complains with "missing timestamp on transmitted
peer delay request" because the wrong format is received (and
discarded).
Fixes: 9718475e69 ("socket: Add SO_TIMESTAMPING_NEW")
Signed-off-by: Christian Eggers <ceggers@arri.de>
Reviewed-by: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Reviewed-by: Deepa Dinamani <deepa.kernel@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Replace commas with semicolons. Commas introduce unnecessary
variability in the code structure and are hard to see. What is done
is essentially described by the following Coccinelle semantic patch
(http://coccinelle.lip6.fr/):
// <smpl>
@@ expression e1,e2; @@
e1
-,
+;
e2
... when any
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1602412498-32025-6-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Replace commas with semicolons. Commas introduce unnecessary
variability in the code structure and are hard to see. What is done
is essentially described by the following Coccinelle semantic patch
(http://coccinelle.lip6.fr/):
// <smpl>
@@ expression e1,e2; @@
e1
-,
+;
e2
... when any
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Acked-by: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/1602412498-32025-5-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Replace commas with semicolons. Commas introduce unnecessary
variability in the code structure and are hard to see. What is done
is essentially described by the following Coccinelle semantic patch
(http://coccinelle.lip6.fr/):
// <smpl>
@@ expression e1,e2; @@
e1
-,
+;
e2
... when any
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1602412498-32025-4-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Dump vlan tag and proto for the usual vlan offload case if the
NF_LOG_MACDECODE flag is set on. Without this information the logging is
misleading as there is no reference to the VLAN header.
[12716.993704] test: IN=veth0 OUT= MACSRC=86:6c:92:ea:d6:73 MACDST=0e:3b:eb:86:73:76 VPROTO=8100 VID=10 MACPROTO=0800 SRC=192.168.10.2 DST=172.217.168.163 LEN=52 TOS=0x00 PREC=0x00 TTL=64 ID=2548 DF PROTO=TCP SPT=55848 DPT=80 WINDOW=501 RES=0x00 ACK FIN URGP=0
[12721.157643] test: IN=veth0 OUT= MACSRC=86:6c:92:ea:d6:73 MACDST=0e:3b:eb:86:73:76 VPROTO=8100 VID=10 MACPROTO=0806 ARP HTYPE=1 PTYPE=0x0800 OPCODE=2 MACSRC=86:6c:92:ea:d6:73 IPSRC=192.168.10.2 MACDST=0e:3b:eb:86:73:76 IPDST=192.168.10.1
Fixes: 83e96d443b ("netfilter: log: split family specific code to nf_log_{ip,ip6,common}.c files")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
-----BEGIN PGP SIGNATURE-----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=udgj
-----END PGP SIGNATURE-----
Merge tag 'io_uring-5.10-2020-10-12' of git://git.kernel.dk/linux-block
Pull io_uring updates from Jens Axboe:
- Add blkcg accounting for io-wq offload (Dennis)
- A use-after-free fix for io-wq (Hillf)
- Cancelation fixes and improvements
- Use proper files_struct references for offload
- Cleanup of io_uring_get_socket() since that can now go into our own
header
- SQPOLL fixes and cleanups, and support for sharing the thread
- Improvement to how page accounting is done for registered buffers and
huge pages, accounting the real pinned state
- Series cleaning up the xarray code (Willy)
- Various cleanups, refactoring, and improvements (Pavel)
- Use raw spinlock for io-wq (Sebastian)
- Add support for ring restrictions (Stefano)
* tag 'io_uring-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (62 commits)
io_uring: keep a pointer ref_node in file_data
io_uring: refactor *files_register()'s error paths
io_uring: clean file_data access in files_register
io_uring: don't delay io_init_req() error check
io_uring: clean leftovers after splitting issue
io_uring: remove timeout.list after hrtimer cancel
io_uring: use a separate struct for timeout_remove
io_uring: improve submit_state.ios_left accounting
io_uring: simplify io_file_get()
io_uring: kill extra check in fixed io_file_get()
io_uring: clean up ->files grabbing
io_uring: don't io_prep_async_work() linked reqs
io_uring: Convert advanced XArray uses to the normal API
io_uring: Fix XArray usage in io_uring_add_task_file
io_uring: Fix use of XArray in __io_uring_files_cancel
io_uring: fix break condition for __io_uring_register() waiting
io_uring: no need to call xa_destroy() on empty xarray
io_uring: batch account ->req_issue and task struct references
io_uring: kill callback_head argument for io_req_task_work_add()
io_uring: move req preps out of io_issue_sqe()
...
Pull crypto updates from Herbert Xu:
"API:
- Allow DRBG testing through user-space af_alg
- Add tcrypt speed testing support for keyed hashes
- Add type-safe init/exit hooks for ahash
Algorithms:
- Mark arc4 as obsolete and pending for future removal
- Mark anubis, khazad, sead and tea as obsolete
- Improve boot-time xor benchmark
- Add OSCCA SM2 asymmetric cipher algorithm and use it for integrity
Drivers:
- Fixes and enhancement for XTS in caam
- Add support for XIP8001B hwrng in xiphera-trng
- Add RNG and hash support in sun8i-ce/sun8i-ss
- Allow imx-rngc to be used by kernel entropy pool
- Use crypto engine in omap-sham
- Add support for Ingenic X1830 with ingenic"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (205 commits)
X.509: Fix modular build of public_key_sm2
crypto: xor - Remove unused variable count in do_xor_speed
X.509: fix error return value on the failed path
crypto: bcm - Verify GCM/CCM key length in setkey
crypto: qat - drop input parameter from adf_enable_aer()
crypto: qat - fix function parameters descriptions
crypto: atmel-tdes - use semicolons rather than commas to separate statements
crypto: drivers - use semicolons rather than commas to separate statements
hwrng: mxc-rnga - use semicolons rather than commas to separate statements
hwrng: iproc-rng200 - use semicolons rather than commas to separate statements
hwrng: stm32 - use semicolons rather than commas to separate statements
crypto: xor - use ktime for template benchmarking
crypto: xor - defer load time benchmark to a later time
crypto: hisilicon/zip - fix the uninitalized 'curr_qm_qp_num'
crypto: hisilicon/zip - fix the return value when device is busy
crypto: hisilicon/zip - fix zero length input in GZIP decompress
crypto: hisilicon/zip - fix the uncleared debug registers
lib/mpi: Fix unused variable warnings
crypto: x86/poly1305 - Remove assignments with no effect
hwrng: npcm - modify readl to readb
...
Pull compat iovec cleanups from Al Viro:
"Christoph's series around import_iovec() and compat variant thereof"
* 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
security/keys: remove compat_keyctl_instantiate_key_iov
mm: remove compat_process_vm_{readv,writev}
fs: remove compat_sys_vmsplice
fs: remove the compat readv/writev syscalls
fs: remove various compat readv/writev helpers
iov_iter: transparently handle compat iovecs in import_iovec
iov_iter: refactor rw_copy_check_uvector and import_iovec
iov_iter: move rw_copy_check_uvector() into lib/iov_iter.c
compat.h: fix a spelling error in <linux/compat.h>
Pull copy_and_csum cleanups from Al Viro:
"Saner calling conventions for csum_and_copy_..._user() and friends"
[ Removing 800+ lines of code and cleaning stuff up is good - Linus ]
* 'work.csum_and_copy' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
ppc: propagate the calling conventions change down to csum_partial_copy_generic()
amd64: switch csum_partial_copy_generic() to new calling conventions
sparc64: propagate the calling convention changes down to __csum_partial_copy_...()
xtensa: propagate the calling conventions change down into csum_partial_copy_generic()
mips: propagate the calling convention change down into __csum_partial_copy_..._user()
mips: __csum_partial_copy_kernel() has no users left
mips: csum_and_copy_{to,from}_user() are never called under KERNEL_DS
sparc32: propagate the calling conventions change down to __csum_partial_copy_sparc_generic()
i386: propagate the calling conventions change down to csum_partial_copy_generic()
sh: propage the calling conventions change down to csum_partial_copy_generic()
m68k: get rid of zeroing destination on error in csum_and_copy_from_user()
arm: propagate the calling convention changes down to csum_partial_copy_from_user()
alpha: propagate the calling convention changes down to csum_partial_copy.c helpers
saner calling conventions for csum_and_copy_..._user()
csum_and_copy_..._user(): pass 0xffffffff instead of 0 as initial sum
csum_partial_copy_nocheck(): drop the last argument
unify generic instances of csum_partial_copy_nocheck()
icmp_push_reply(): reorder adding the checksum up
skb_copy_and_csum_bits(): don't bother with the last argument
Alexei Starovoitov says:
====================
pull-request: bpf-next 2020-10-12
The main changes are:
1) The BPF verifier improvements to track register allocation pattern, from Alexei and Yonghong.
2) libbpf relocation support for different size load/store, from Andrii.
3) bpf_redirect_peer() helper and support for inner map array with different max_entries, from Daniel.
4) BPF support for per-cpu variables, form Hao.
5) sockmap improvements, from John.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pablo Neira Ayuso says:
====================
Netfilter/IPVS updates for net-next
The following patchset contains Netfilter/IPVS updates for net-next:
1) Inspect the reply packets coming from DR/TUN and refresh connection
state and timeout, from longguang yue and Julian Anastasov.
2) Series to add support for the inet ingress chain type in nf_tables.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The initial support for netlink extended ACK is missing the chain update
path, which results in misleading error reporting in case of EEXIST.
Fixes 36dd1bcc07 ("netfilter: nf_tables: initial support for extended ACK reporting")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
con->out_msg must be cleared on Policy::stateful_server
(!CEPH_MSG_CONNECT_LOSSY) faults. Not doing so botches the
reconnection attempt, because after writing the banner the
messenger moves on to writing the data section of that message
(either from where it got interrupted by the connection reset or
from the beginning) instead of writing struct ceph_msg_connect.
This results in a bizarre error message because the server
sends CEPH_MSGR_TAG_BADPROTOVER but we think we wrote struct
ceph_msg_connect:
libceph: mds0 (1)172.21.15.45:6828 socket error on write
ceph: mds0 reconnect start
libceph: mds0 (1)172.21.15.45:6829 socket closed (con state OPEN)
libceph: mds0 (1)172.21.15.45:6829 protocol version mismatch, my 32 != server's 32
libceph: mds0 (1)172.21.15.45:6829 protocol version mismatch
AFAICT this bug goes back to the dawn of the kernel client.
The reason it survived for so long is that only MDS sessions
are stateful and only two MDS messages have a data section:
CEPH_MSG_CLIENT_RECONNECT (always, but reconnecting is rare)
and CEPH_MSG_CLIENT_REQUEST (only when xattrs are involved).
The connection has to get reset precisely when such message
is being sent -- in this case it was the former.
Cc: stable@vger.kernel.org
Link: https://tracker.ceph.com/issues/47723
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
The queued con->work can start executing (and therefore logging)
before we get to this "con->work has been queued" message, making
the logs confusing. Move it up, with the meaning of "con->work
is about to be queued".
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Replace a global map->crush_workspace (protected by a global mutex)
with a list of workspaces, up to the number of CPUs + 1.
This is based on a patch from Robin Geuze <robing@nl.team.blue>.
Robin and his team have observed a 10-20% increase in IOPS on all
queue depths and lower CPU usage as well on a high-end all-NVMe
100GbE cluster.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
In p9_fd_create_unix, checking is performed to see if the addr (passed
as an argument) is NULL or not.
However, no check is performed to see if addr is a valid address, i.e.,
it doesn't entirely consist of only 0's.
The initialization of sun_server.sun_path to be equal to this faulty
addr value leads to an uninitialized variable, as detected by KMSAN.
Checking for this (faulty addr) and returning a negative error number
appropriately, resolves this issue.
Link: http://lkml.kernel.org/r/20201012042404.2508-1-anant.thazhemadam@gmail.com
Reported-by: syzbot+75d51fe5bf4ebe988518@syzkaller.appspotmail.com
Tested-by: syzbot+75d51fe5bf4ebe988518@syzkaller.appspotmail.com
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Currently, we often run with a nop parser namely one that just does
this, 'return skb->len'. This happens when either our verdict program
can handle streaming data or it is only looking at socket data such
as IP addresses and other metadata associated with the flow. The second
case is common for a L3/L4 proxy for instance.
So lets allow loading programs without the parser then we can skip
the stream parser logic and avoid having to add a BPF program that
is effectively a nop.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/160239297866.8495.13345662302749219672.stgit@john-Precision-5820-Tower
We are about to allow skb_verdict to run without skb_parser programs
as a first step change code to check each program type specifically.
This should be a mechanical change without any impact to actual result.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/160239294756.8495.5796595770890272219.stgit@john-Precision-5820-Tower
Move skb->sk assignment out of sk_psock_bpf_run() and into individual
callers. Then we can use proper skb_set_owner_r() call to assign a
sk to a skb. This improves things by also charging the truesize against
the sockets sk_rmem_alloc counter. With this done we get some accounting
in place to ensure the memory associated with skbs on the workqueue are
still being accounted for somewhere. Finally, by using skb_set_owner_r
the destructor is setup so we can just let the normal skb_kfree logic
recover the memory. Combined with previous patch dropping skb_orphan()
we now can recover from memory pressure and maintain accounting.
Note, we will charge the skbs against their originating socket even
if being redirected into another socket. Once the skb completes the
redirect op the kfree_skb will give the memory back. This is important
because if we charged the socket we are redirecting to (like it was
done before this series) the sock_writeable() test could fail because
of the skb trying to be sent is already charged against the socket.
Also TLS case is special. Here we wait until we have decided not to
simply PASS the packet up the stack. In the case where we PASS the
packet up the stack we already have an skb which is accounted for on
the TLS socket context.
For the parser case we continue to just set/clear skb->sk this is
because the skb being used here may be combined with other skbs or
turned into multiple skbs depending on the parser logic. For example
the parser could request a payload length greater than skb->len so
that the strparser needs to collect multiple skbs. At any rate
the final result will be handled in the strparser recv callback.
Fixes: 604326b41a ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/160226867513.5692.10579573214635925960.stgit@john-Precision-5820-Tower
Calling skb_orphan() is unnecessary in the strp rcv handler because the skb
is from a skb_clone() in __strp_recv. So it never has a destructor or a
sk assigned. Plus its confusing to read because it might hint to the reader
that the skb could have an sk assigned which is not true. Even if we did
have an sk assigned it would be cleaner to simply wait for the upcoming
kfree_skb().
Additionally, move the comment about strparser clone up so its closer to
the logic it is describing and add to it so that it is more complete.
Fixes: 604326b41a ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/160226865548.5692.9098315689984599579.stgit@john-Precision-5820-Tower
In the sk_skb redirect case we didn't handle the case where we overrun
the sk_rmem_alloc entry on ingress redirect or sk_wmem_alloc on egress.
Because we didn't have anything implemented we simply dropped the skb.
This meant data could be dropped if socket memory accounting was in
place.
This fixes the above dropped data case by moving the memory checks
later in the code where we actually do the send or recv. This pushes
those checks into the workqueue and allows us to return an EAGAIN error
which in turn allows us to try again later from the workqueue.
Fixes: 51199405f9 ("bpf: skb_verdict, support SK_PASS on RX BPF path")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/160226863689.5692.13861422742592309285.stgit@john-Precision-5820-Tower
The skb_set_owner_w is unnecessary here. The sendpage call will create a
fresh skb and set the owner correctly from workqueue. Its also not entirely
harmless because it consumes cycles, but also impacts resource accounting
by increasing sk_wmem_alloc. This is charging the socket we are going to
send to for the skb, but we will put it on the workqueue for some time
before this happens so we are artifically inflating sk_wmem_alloc for
this period. Further, we don't know how many skbs will be used to send the
packet or how it will be broken up when sent over the new socket so
charging it with one big sum is also not correct when the workqueue may
break it up if facing memory pressure. Seeing we don't know how/when
this is going to be sent drop the early accounting.
A later patch will do proper accounting charged on receive socket for
the case where skbs get enqueued on the workqueue.
Fixes: 604326b41a ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/160226861708.5692.17964237936462425136.stgit@john-Precision-5820-Tower
When we receive an skb and the ingress skb verdict program returns
SK_PASS we currently set the ingress flag and put it on the workqueue
so it can be turned into a sk_msg and put on the sk_msg ingress queue.
Then finally telling userspace with data_ready hook.
Here we observe that if the workqueue is empty then we can try to
convert into a sk_msg type and call data_ready directly without
bouncing through a workqueue. Its a common pattern to have a recv
verdict program for visibility that always returns SK_PASS. In this
case unless there is an ENOMEM error or we overrun the socket we
can avoid the workqueue completely only using it when we fall back
to error cases caused by memory pressure.
By doing this we eliminate another case where data may be dropped
if errors occur on memory limits in workqueue.
Fixes: 51199405f9 ("bpf: skb_verdict, support SK_PASS on RX BPF path")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/160226859704.5692.12929678876744977669.stgit@john-Precision-5820-Tower
For sk_skb case where skb_verdict program returns SK_PASS to continue to
pass packet up the stack, the memory limits were already checked before
enqueuing in skb_queue_tail from TCP side. So, lets remove the extra checks
here. The theory is if the TCP stack believes we have memory to receive
the packet then lets trust the stack and not double check the limits.
In fact the accounting here can cause a drop if sk_rmem_alloc has increased
after the stack accepted this packet, but before the duplicate check here.
And worse if this happens because TCP stack already believes the data has
been received there is no retransmit.
Fixes: 51199405f9 ("bpf: skb_verdict, support SK_PASS on RX BPF path")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/160226857664.5692.668205469388498375.stgit@john-Precision-5820-Tower
fq qdisc requires tstamp to be cleared in forwarding path
Reported-by: Evgeny B <abt-admin@mail.ru>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209427
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Fixes: 8203e2d844 ("net: clear skb->tstamp in forwarding paths")
Fixes: fb420d5d91 ("tcp/fq: move back to CLOCK_MONOTONIC")
Fixes: 80b14dee2b ("net: Add a new socket option for a future transmit time.")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This patch adds a new ingress hook for the inet family. The inet ingress
hook emulates the IP receive path code, therefore, unclean packets are
drop before walking over the ruleset in this basechain.
This patch also introduces the nft_base_chain_netdev() helper function
to check if this hook is bound to one or more devices (through the hook
list infrastructure). This check allows to perform the same handling for
the inet ingress as it would be a netdev ingress chain from the control
plane.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This patch adds the NF_INET_INGRESS pseudohook for the NFPROTO_INET
family. This is a mapping this new hook to the existing NFPROTO_NETDEV
and NF_NETDEV_INGRESS hook. The hook does not guarantee that packets are
inet only, users must filter out non-ip traffic explicitly.
This infrastructure makes it easier to support this new hook in nf_tables.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Just like for MASQ, inspect the reply packets coming from DR/TUN
real servers and alter the connection's state and timeout
according to the protocol.
It's ipvs's duty to do traffic statistic if packets get hit,
no matter what mode it is.
Signed-off-by: longguang.yue <bigclouds@163.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The bpf_fib_lookup() helper performs a neighbour lookup for the destination
IP and returns BPF_FIB_LKUP_NO_NEIGH if this fails, with the expectation
that the BPF program will pass the packet up the stack in this case.
However, with the addition of bpf_redirect_neigh() that can be used instead
to perform the neighbour lookup, at the cost of a bit of duplicated work.
For that we still need the target ifindex, and since bpf_fib_lookup()
already has that at the time it performs the neighbour lookup, there is
really no reason why it can't just return it in any case. So let's just
always return the ifindex if the FIB lookup itself succeeds.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Link: https://lore.kernel.org/bpf/20201009184234.134214-1-toke@redhat.com
When the Extraction Frame Header contains a valid classified VLAN, use
that instead of the VLAN header present in the packet.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Recent work in f4d0525921 ("bpf: Add map_meta_equal map ops") and 134fede4ee
("bpf: Relax max_entries check for most of the inner map types") added support
for dynamic inner max elements for most map-in-map types. Exceptions were maps
like array or prog array where the map_gen_lookup() callback uses the maps'
max_entries field as a constant when emitting instructions.
We recently implemented Maglev consistent hashing into Cilium's load balancer
which uses map-in-map with an outer map being hash and inner being array holding
the Maglev backend table for each service. This has been designed this way in
order to reduce overall memory consumption given the outer hash map allows to
avoid preallocating a large, flat memory area for all services. Also, the
number of service mappings is not always known a-priori.
The use case for dynamic inner array map entries is to further reduce memory
overhead, for example, some services might just have a small number of back
ends while others could have a large number. Right now the Maglev backend table
for small and large number of backends would need to have the same inner array
map entries which adds a lot of unneeded overhead.
Dynamic inner array map entries can be realized by avoiding the inlined code
generation for their lookup. The lookup will still be efficient since it will
be calling into array_map_lookup_elem() directly and thus avoiding retpoline.
The patch adds a BPF_F_INNER_MAP flag to map creation which therefore skips
inline code generation and relaxes array_map_meta_equal() check to ignore both
maps' max_entries. This also still allows to have faster lookups for map-in-map
when BPF_F_INNER_MAP is not specified and hence dynamic max_entries not needed.
Example code generation where inner map is dynamic sized array:
# bpftool p d x i 125
int handle__sys_enter(void * ctx):
; int handle__sys_enter(void *ctx)
0: (b4) w1 = 0
; int key = 0;
1: (63) *(u32 *)(r10 -4) = r1
2: (bf) r2 = r10
;
3: (07) r2 += -4
; inner_map = bpf_map_lookup_elem(&outer_arr_dyn, &key);
4: (18) r1 = map[id:468]
6: (07) r1 += 272
7: (61) r0 = *(u32 *)(r2 +0)
8: (35) if r0 >= 0x3 goto pc+5
9: (67) r0 <<= 3
10: (0f) r0 += r1
11: (79) r0 = *(u64 *)(r0 +0)
12: (15) if r0 == 0x0 goto pc+1
13: (05) goto pc+1
14: (b7) r0 = 0
15: (b4) w6 = -1
; if (!inner_map)
16: (15) if r0 == 0x0 goto pc+6
17: (bf) r2 = r10
;
18: (07) r2 += -4
; val = bpf_map_lookup_elem(inner_map, &key);
19: (bf) r1 = r0 | No inlining but instead
20: (85) call array_map_lookup_elem#149280 | call to array_map_lookup_elem()
; return val ? *val : -1; | for inner array lookup.
21: (15) if r0 == 0x0 goto pc+1
; return val ? *val : -1;
22: (61) r6 = *(u32 *)(r0 +0)
; }
23: (bc) w0 = w6
24: (95) exit
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20201010234006.7075-4-daniel@iogearbox.net
Add an efficient ingress to ingress netns switch that can be used out of tc BPF
programs in order to redirect traffic from host ns ingress into a container
veth device ingress without having to go via CPU backlog queue [0]. For local
containers this can also be utilized and path via CPU backlog queue only needs
to be taken once, not twice. On a high level this borrows from ipvlan which does
similar switch in __netif_receive_skb_core() and then iterates via another_round.
This helps to reduce latency for mentioned use cases.
Pod to remote pod with redirect(), TCP_RR [1]:
# percpu_netperf 10.217.1.33
RT_LATENCY: 122.450 (per CPU: 122.666 122.401 122.333 122.401 )
MEAN_LATENCY: 121.210 (per CPU: 121.100 121.260 121.320 121.160 )
STDDEV_LATENCY: 120.040 (per CPU: 119.420 119.910 125.460 115.370 )
MIN_LATENCY: 46.500 (per CPU: 47.000 47.000 47.000 45.000 )
P50_LATENCY: 118.500 (per CPU: 118.000 119.000 118.000 119.000 )
P90_LATENCY: 127.500 (per CPU: 127.000 128.000 127.000 128.000 )
P99_LATENCY: 130.750 (per CPU: 131.000 131.000 129.000 132.000 )
TRANSACTION_RATE: 32666.400 (per CPU: 8152.200 8169.842 8174.439 8169.897 )
Pod to remote pod with redirect_peer(), TCP_RR:
# percpu_netperf 10.217.1.33
RT_LATENCY: 44.449 (per CPU: 43.767 43.127 45.279 45.622 )
MEAN_LATENCY: 45.065 (per CPU: 44.030 45.530 45.190 45.510 )
STDDEV_LATENCY: 84.823 (per CPU: 66.770 97.290 84.380 90.850 )
MIN_LATENCY: 33.500 (per CPU: 33.000 33.000 34.000 34.000 )
P50_LATENCY: 43.250 (per CPU: 43.000 43.000 43.000 44.000 )
P90_LATENCY: 46.750 (per CPU: 46.000 47.000 47.000 47.000 )
P99_LATENCY: 52.750 (per CPU: 51.000 54.000 53.000 53.000 )
TRANSACTION_RATE: 90039.500 (per CPU: 22848.186 23187.089 22085.077 21919.130 )
[0] https://linuxplumbersconf.org/event/7/contributions/674/attachments/568/1002/plumbers_2020_cilium_load_balancer.pdf
[1] https://github.com/borkmann/netperf_scripts/blob/master/percpu_netperf
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201010234006.7075-3-daniel@iogearbox.net
Tobias reported regressions in IPsec tests following the patch
referenced by the Fixes tag below. The root cause is dropping the
reset of the flowi4_oif after the fib_lookup. Apparently it is
needed for xfrm cases, so restore the oif update to ip_route_output_flow
right before the call to xfrm_lookup_route.
Fixes: 2fbc6e89b2 ("ipv4: Update exception handling for multipath routes via same device")
Reported-by: Tobias Brunner <tobias@strongswan.org>
Signed-off-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The msk can close MP_JOIN subflows if the initial handshake
fails. Currently such subflows are kept alive in the
conn_list until the msk itself is closed.
Beyond the wasted memory, we could end-up sending the
DATA_FIN and the DATA_FIN ack on such socket, even after a
reset.
Fixes: 43b54c6ee3 ("mptcp: Use full MPTCP-level disconnect state machine")
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Additional/MP_JOIN subflows that do not pass some initial handshake
tests currently causes fallback to TCP. That is an RFC violation:
we should instead reset the subflow and leave the the msk untouched.
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/91
Fixes: f296234c98 ("mptcp: Add handling of incoming MP_JOIN requests")
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
For older versions of gcc, the array = {0}; will cause warnings:
net/smc/smc_llc.c: In function 'smc_llc_send_link_delete_all':
net/smc/smc_llc.c:1317:9: warning: missing braces around initializer [-Wmissing-braces]
struct smc_llc_msg_del_link delllc = {0};
^
net/smc/smc_llc.c:1317:9: warning: (near initialization for 'delllc.hd') [-Wmissing-braces]
1 warnings generated
Fixes: f3811fd7bc ("net/smc: send DELETE_LINK, ALL message and wait for send to complete")
Signed-off-by: Pujin Shi <shipujin.t@gmail.com>
Acked-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAl9/hIITHG1rbEBwZW5n
dXRyb25peC5kZQAKCRCpyVqK+u3vqSUNB/9NiVYEPFF2mkNKzHAkhOssFF2NIzo8
0LBsV/YbOFqxSW0nYg0BB2nIdfIIdR+yqBW3ishbvizAWUOzSVvGD03oG0pZkKaZ
eMhh+OQ5fBjIjkNYXHC870uUZyJ7FzcyFLpeNoJfrGVuAtTpQts2TwWwevArPhfk
4XswX7DQ5npLwTGWBIvL8a6zYAmjEtT5Fnds0oeGeLfepWePG0ih/uxLN65JTrTU
uHt5gSgJLflXF+swErnLosMr1ADy2I+Zsg3XlYp89A9xLy5IEh0vyQPxEl69Wu1x
gQgO7L675YRwO9EyVkIfkYUzd/ot3o+virHTN470unu5QCb6O+04nof1
=omsQ
-----END PGP SIGNATURE-----
Merge tag 'linux-can-fixes-for-5.9-20201008' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
====================
linux-can-fixes-for-5.9-20201008
The first patch is by Lucas Stach and fixes m_can driver by removing an
erroneous call to m_can_class_suspend() in runtime suspend. Which causes the
pinctrl state to get stuck on the "sleep" state, which breaks all CAN
functionality on SoCs where this state is defined.
The last two patches target the j1939 protocol: Cong Wang fixes a syzbot
finding of an uninitialized variable in the j1939 transport protocol. I
contribute a patch, that fixes the initialization of a same uninitialized
variable in a different function.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* fixes for the recent S1G work
* a docbook build time improvement
* API to pass beacon rate to lower-level driver
-----BEGIN PGP SIGNATURE-----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=TrMG
-----END PGP SIGNATURE-----
Merge tag 'mac80211-next-for-net-next-2020-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
A handful of changes:
* fixes for the recent S1G work
* a docbook build time improvement
* API to pass beacon rate to lower-level driver
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a new attribute NLMSGERR_ATTR_POLICY to the extended ACK
to advertise the policy, e.g. if an attribute was out of range,
you'll know the range that's permissible.
Add new NL_SET_ERR_MSG_ATTR_POL() and NL_SET_ERR_MSG_ATTR_POL()
macros to set this, since realistically it's only useful to do
this when the bad attribute (offset) is also returned.
Use it in lib/nlattr.c which practically does all the policy
validation.
v2:
- add and use netlink_policy_dump_attr_size_estimate()
v3:
- remove redundant break
v4:
- really remove redundant break ... sorry
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Refactor the per-attribute policy writing into a new
helper function, to be used later for dumping out the
policy of a rejected attribute.
v2:
- fix some indentation
v3:
- change variable order in netlink_policy_dump_write()
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
skb_unshare() drops a reference count on the old skb unconditionally,
so in the failure case, we end up freeing the skb twice here.
And because the skb is allocated in fclone and cloned by caller
tipc_msg_reassemble(), the consequence is actually freeing the
original skb too, thus triggered the UAF by syzbot.
Fix this by replacing this skb_unshare() with skb_cloned()+skb_copy().
Fixes: ff48b6222e ("tipc: use skb_unshare() instead in tipc_buf_append()")
Reported-and-tested-by: syzbot+e96a7ba46281824cc46a@syzkaller.appspotmail.com
Cc: Jon Maloy <jmaloy@redhat.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Field ini->smcd_version is set to SMC_V2 before calling
smc_listen_ism_init(). This clears the V1 bit that may be set. When all
matching ISM V2 devices fail to initialize then the smcd_version field
needs to get restored to allow any possible V1 devices to initialize.
And be consistent, always go to the not_found label when no device was
found.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
coccinelle informs about
net/smc/af_smc.c:1770:10-11: WARNING: opportunity for kzfree/kvfree_sensitive
Its not that kzfree() would help here, the memset() is done to prepare
the buffer for another socket receive.
Fix that warning message by reordering the calls, while at it eliminate
the unneeded variable cclc2 and use sizeof(*buf) as above in the same
function. No functional changes.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Static code checkers warn of inconsistent returns because the lgr mutex
is locked in one function and unlocked in a function called by the
locking function:
net/smc/af_smc.c:823 smc_connect_rdma() warn: inconsistent returns 'smc_client_lgr_pending'.
net/smc/af_smc.c:897 smc_connect_ism() warn: inconsistent returns 'smc_server_lgr_pending'.
Make the code consistent by doing the unlock in the same function that
fetches the lock. No functional changes.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAl9+MLsTHG1rbEBwZW5n
dXRyb25peC5kZQAKCRCpyVqK+u3vqScfCACBLbt8heMyVQQYd130/oIAvQ2o8Bjf
DPa36CVMYOGH1KOCnEyuc+oKsXeJfy33Faxe3+s7q2aMkddH7zhHQNiohPgwWAsM
AuAjRgbAVkDd9BTAbOS/cujftZBBccGRUuusbCg7lsBdwhGQbCggfYbOmGt2B8Gv
Wt3s2td8i90WutFb3UN3ec5N44jTn+WQvuOjX0Dzt/qi3r5qyC5JvcdkW3LAfxEG
X7bJ6cf8HRgUyPAALJGdoWdKT+ImmFbUJc8WuX9PdlYzxR+FyPKQgxD187ARTeLA
OqQSMHi4jRNywei0WUg5YoR0qPAHWKOLIMBK45TWNfa0p2+JzRbxTf3o
=7UL+
-----END PGP SIGNATURE-----
Merge tag 'linux-can-next-for-5.10-20201007' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
linux-can-next-for-5.10-20201007
The first 3 patches are by me and fix several warnings found
when compiling the kernel with W=1.
Lukas Bulwahn's patch adjusts the MAINTAINERS file, to accommodate
the renaming of the mcp251xfd driver.
Vincent Mailhol contributes 3 patches for the CAN networking layer.
First error queue support is added the the CAN RAW protocol.
The second patch converts the get_can_dlc() and get_canfd_dlc()
in-Kernel-only macros from using __u8 to u8.
The third patch adds a helper function to calculate the length of
one bit in in multiple of time quanta.
Oliver Hartkopp's patch add support for the ISO 15765-2:2016
transport protocol to the CAN stack.
Three patches by Lad Prabhakar add documentation for various
new rcar controllers to the device tree bindings of the rcar_can
and rcan_canfd driver.
Michael Walle's patch adds various processors to the flexcan
driver binding documentation.
The next two patches are by me and target the flexcan driver aswell.
The remove the ack_grp and ack_bit from the fsl,stop-mode DT property
and the driver, as they are not used anymore. As these are the last
two arguments this change will not break existing device trees.
The last three patches are by Srinivas Neeli and target
the xilinx_can driver.
The first one increases the lower limit for the bit rate
prescaler to 2, the other two fix sparse and coverity findings.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
At first when sendpage gets called, if there is more data, 'more' in
tls_push_data() gets set which later sets pending_open_record_frags, but
when there is no more data in file left, and last time tls_push_data()
gets called, pending_open_record_frags doesn't get reset. And later when
2 bytes of encrypted alert comes as sendmsg, it first checks for
pending_open_record_frags, and since this is set, it creates a record with
0 data bytes to encrypt, meaning record length is prepend_size + tag_size
only, which causes problem.
We should set/reset pending_open_record_frags based on more bit.
Fixes: e8f6979981 ("net/tls: Add generic NIC offload infrastructure")
Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When a ICMPV6_PKT_TOOBIG report a next-hop MTU that is less than the IPv6
minimum link MTU, the estimated path MTU is reduced to the minimum link
MTU. This behaviour breaks TAHI IPv6 Core Conformance Test v6LC4.1.6:
Packet Too Big Less than IPv6 MTU.
Referring to RFC 8201 section 4: "If a node receives a Packet Too Big
message reporting a next-hop MTU that is less than the IPv6 minimum link
MTU, it must discard it. A node must not reduce its estimate of the Path
MTU below the IPv6 minimum link MTU on receipt of a Packet Too Big
message."
Drop the path MTU update if reported MTU is less than the minimum link MTU.
Signed-off-by: Georg Kohmann <geokohma@cisco.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
RDS/IB tries to refill the recv buffer in softirq context using
GFP_NOWAIT flag. However alloc failure is handled by queueing a work to
refill the recv buffer with GFP_KERNEL flag. This means failure to
allocate with GFP_NOWAIT isn't fatal. Do not print the PAF warnings if
softirq context fails to refill the recv buffer. We will see the PAF
warnings when worker also fails to allocate.
Signed-off-by: Manjunath Patil <manjunath.b.patil@oracle.com>
Reviewed-by: Aruna Ramakrishna <aruna.ramakrishna@oracle.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The enable_remote_dev_reset devlink param flags that the host admin
allows device resets that can be initiated by other hosts. This
parameter is useful for setups where a device is shared by different
hosts, such as multi-host setup. Once the user set this parameter to
false, the driver should NACK any attempt to reset the device while the
driver is loaded.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add remote reload stats to hold the history of actions performed due
devlink reload commands initiated by remote host. For example, in case
firmware activation with reset finished successfully but was initiated
by remote host.
The function devlink_remote_reload_actions_performed() is exported to
enable drivers update on remote reload actions performed as it was not
initiated by their own devlink instance.
Expose devlink remote reload stats to the user through devlink dev get
command.
Examples:
$ devlink dev show
pci/0000:82:00.0:
stats:
reload:
driver_reinit 2 fw_activate 1 fw_activate_no_reset 0
remote_reload:
driver_reinit 0 fw_activate 0 fw_activate_no_reset 0
pci/0000:82:00.1:
stats:
reload:
driver_reinit 1 fw_activate 0 fw_activate_no_reset 0
remote_reload:
driver_reinit 1 fw_activate 1 fw_activate_no_reset 0
$ devlink dev show -jp
{
"dev": {
"pci/0000:82:00.0": {
"stats": {
"reload": {
"driver_reinit": 2,
"fw_activate": 1,
"fw_activate_no_reset": 0
},
"remote_reload": {
"driver_reinit": 0,
"fw_activate": 0,
"fw_activate_no_reset": 0
}
}
},
"pci/0000:82:00.1": {
"stats": {
"reload": {
"driver_reinit": 1,
"fw_activate": 0,
"fw_activate_no_reset": 0
},
"remote_reload": {
"driver_reinit": 1,
"fw_activate": 1,
"fw_activate_no_reset": 0
}
}
}
}
}
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add reload stats to hold the history per reload action type and limit.
For example, the number of times fw_activate has been performed on this
device since the driver module was added or if the firmware activation
was performed with or without reset.
Add devlink notification on stats update.
Expose devlink reload stats to the user through devlink dev get command.
Examples:
$ devlink dev show
pci/0000:82:00.0:
stats:
reload:
driver_reinit 2 fw_activate 1 fw_activate_no_reset 0
pci/0000:82:00.1:
stats:
reload:
driver_reinit 1 fw_activate 0 fw_activate_no_reset 0
$ devlink dev show -jp
{
"dev": {
"pci/0000:82:00.0": {
"stats": {
"reload": {
"driver_reinit": 2,
"fw_activate": 1,
"fw_activate_no_reset": 0
}
}
},
"pci/0000:82:00.1": {
"stats": {
"reload": {
"driver_reinit": 1,
"fw_activate": 0,
"fw_activate_no_reset": 0
}
}
}
}
}
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add reload limit to demand restrictions on reload actions.
Reload limits supported:
no_reset: No reset allowed, no down time allowed, no link flap and no
configuration is lost.
By default reload limit is unspecified and so no constraints on reload
actions are required.
Some combinations of action and limit are invalid. For example, driver
can not reinitialize its entities without any downtime.
The no_reset reload limit will have usecase in this patchset to
implement restricted fw_activate on mlx5.
Have the uapi parameter of reload limit ready for future support of
multiselection.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add devlink reload action to allow the user to request a specific reload
action. The action parameter is optional, if not specified then devlink
driver re-init action is used (backward compatible).
Note that when required to do firmware activation some drivers may need
to reload the driver. On the other hand some drivers may need to reset
the firmware to reinitialize the driver entities. Therefore, the devlink
reload command returns the actions which were actually performed.
Reload actions supported are:
driver_reinit: driver entities re-initialization, applying devlink-param
and devlink-resource values.
fw_activate: firmware activate.
command examples:
$devlink dev reload pci/0000:82:00.0 action driver_reinit
reload_actions_performed:
driver_reinit
$devlink dev reload pci/0000:82:00.0 action fw_activate
reload_actions_performed:
driver_reinit fw_activate
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Change devlink_reload_supported() function to get devlink_ops pointer
param instead of devlink pointer param.
This change will be used in the next patch to check if devlink reload is
supported before devlink instance is allocated.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
using packetdrill it's possible to observe the same MPTCP DSN being acked
by different subflows with DACK4 and DACK8. This is in contrast with what
specified in RFC8684 §3.3.2: if an MPTCP endpoint transmits a 64-bit wide
DSN, it MUST be acknowledged with a 64-bit wide DACK. Fix 'use_64bit_ack'
variable to make it a property of MPTCP sockets, not TCP subflows.
Fixes: a0c1d0eafd ("mptcp: Use 32-bit DATA_ACK when possible")
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
kmalloc() of sufficiently big portion of memory is cache-aligned
in regular conditions. If some debugging options are used,
there is no reason qdisc structures would need 64-byte alignment
if most other kernel structures are not aligned.
This get rid of QDISC_ALIGN and QDISC_ALIGNTO.
Addition of privdata field will help implementing
the reverse of qdisc_priv() and documents where
the private data is.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Allen Pais <allen.lkml@gmail.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Introduce one cache line worth of padding between the producer and
consumer pointers in all the lockless rings. This so that the HW
adjacency prefetcher will not prefetch the consumer pointer when the
producer pointer is used and vice versa. This improves throughput
performance for the l2fwd sample app with 2% on my machine with HW
prefetching turned on.
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/1602166338-21378-1-git-send-email-magnus.karlsson@gmail.com
As Nicolas noticed in his case, when xfrm_interface module is installed
the standard IP tunnels will break in receiving packets.
This is caused by the IP tunnel handlers with a higher priority in xfrm
interface processing incoming packets by xfrm_input(), which would drop
the packets and return 0 instead when anything wrong happens.
Rather than changing xfrm_input(), this patch is to adjust the priority
for the IP tunnel handlers in xfrm interface, so that the packets would
go to xfrmi's later than the others', as the others' would not drop the
packets when the handlers couldn't process them.
Note that IPCOMP also defines its own IPIP tunnel handler and it calls
xfrm_input() as well, so we must make its priority lower than xfrmi's,
which means having xfrmi loaded would still break IPCOMP. We may seek
another way to fix it in xfrm_input() in the future.
Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Tested-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Fixes: da9bbf0598 ("xfrm: interface: support IPIP and IPIP6 tunnels processing with .cb_handler")
FIxes: d7b360c286 ("xfrm: interface: support IP6IP6 and IP6IP tunnels processing with .cb_handler")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Fix follow warnings:
[net/9p/trans_xen.c:454]: (warning) %u in format string (no. 1) requires
'unsigned int' but the argument type is 'int'.
[net/9p/trans_xen.c:460]: (warning) %u in format string (no. 1) requires
'unsigned int' but the argument type is 'int'.
Link: http://lkml.kernel.org/r/20201009080552.89918-1-yebin10@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
If recvmsg() and the workqueue race to dequeue the data
pending on some subflow, the current mapping for such
subflow covers several skbs and some of them have not
reached yet the received, either the worker or recvmsg()
can find a subflow with the data_avail flag set - since
the current mapping is valid and in sequence - but no
skbs in the receive queue - since the other entity just
processed them.
The above will lead to an unbounded loop in __mptcp_move_skbs()
and a subsequent hang of any task trying to acquiring the msk
socket lock.
This change addresses the issue stopping the __mptcp_move_skbs()
loop as soon as we detect the above race (empty receive queue
with data_avail set).
Reported-and-tested-by: syzbot+fcf8ca5817d6e92c6567@syzkaller.appspotmail.com
Fixes: ab174ad8ef ("mptcp: move ooo skbs into msk out of order queue.")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This accidentally got wired up to the *get* policy instead
of the *set* policy, causing operations to be rejected. Fix
it by wiring up the correct policy instead.
Fixes: 5028588b62 ("ethtool: wire up set policies to ops")
Reported-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The ETHTOOL_A_STRSET_COUNTS_ONLY flag attribute was previously
not allowed to be used, but now due to the policy size reduction
we would access the tb[] array out of bounds since we tried to
check for the attribute despite it not being accepted.
Fix both issues by adding it correctly to the appropriate policy.
Fixes: ff419afa43 ("ethtool: trim policy tables")
Fixes: 71921690f9 ("ethtool: provide string sets with STRSET_GET request")
Reported-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Small conflict around locking in rxrpc_process_event() -
channel_lock moved to bundle in next, while state lock
needs _bh() from net.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch add the initialization of skbcnt, similar to:
e009f95b15 can: j1935: j1939_tp_tx_dat_new(): fix missing initialization of skbcnt
Let's play save and initialize this skbcnt as well.
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This fixes an uninit-value warning:
BUG: KMSAN: uninit-value in can_receive+0x26b/0x630 net/can/af_can.c:650
Reported-and-tested-by: syzbot+3f3837e61a48d32b495f@syzkaller.appspotmail.com
Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Cc: Robin van der Gracht <robin@protonic.nl>
Cc: Oleksij Rempel <linux@rempel-privat.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://lore.kernel.org/r/20201008061821.24663-1-xiyou.wangcong@gmail.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
With multiple DNAT rules it's possible that after destination
translation the resulting tuples collide.
For example, two openvswitch flows:
nw_dst=10.0.0.10,tp_dst=10, actions=ct(commit,table=2,nat(dst=20.0.0.1:20))
nw_dst=10.0.0.20,tp_dst=10, actions=ct(commit,table=2,nat(dst=20.0.0.1:20))
Assuming two TCP clients initiating the following connections:
10.0.0.10:5000->10.0.0.10:10
10.0.0.10:5000->10.0.0.20:10
Both tuples would translate to 10.0.0.10:5000->20.0.0.1:20 causing
nf_conntrack_confirm() to fail because of tuple collision.
Netfilter handles this case by allocating a null binding for SNAT at
egress by default. Perform the same operation in openvswitch for DNAT
if no explicit SNAT is requested by the user and allocate a null binding
for SNAT for packets in the "original" direction.
Reported-at: https://bugzilla.redhat.com/1877128
Suggested-by: Florian Westphal <fw@strlen.de>
Fixes: 05752523e5 ("openvswitch: Interface with NAT.")
Signed-off-by: Dumitru Ceara <dceara@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Daniel Borkmann says:
====================
pull-request: bpf 2020-10-08
The main changes are:
1) Fix "unresolved symbol" build error under CONFIG_NET w/o CONFIG_INET due
to missing tcp_timewait_sock and inet_timewait_sock BTF, from Yonghong Song.
2) Fix 32 bit sub-register bounds tracking for OR case, from Daniel Borkmann.
====================
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is correcting NETLINK br_fill_ifinfo() to be able to
handle 'filter_mask' with multiple flags asserted.
Fixes: 36a8e8e265 ("bridge: Extend br_fill_ifinfo to return MPR status")
Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Suggested-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The user is allowed to change beacon tx rate (HT/VHT/HE) from hostapd.
This information needs to be passed to the driver when the rate control
is offloaded to the firmware. The driver capability of allowing beacon
rate is already validated in cfg80211, so simply passing the rate
information to the driver is enough.
Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
Link: https://lore.kernel.org/r/1601762658-15627-1-git-send-email-rmanohar@codeaurora.org
[adjust commit message slightly]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
last_rate is initialized to zero by sta_info_alloc(), but
this indicates legacy bitrate for the last TX rate (and
invalid for the last RX rate). To avoid a warning when
decoding the last rate as legacy (before a data frame
has been sent), initialize them as S1G MCS.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20201005164522.18069-2-thomas@adapt-ip.com
[rename to ieee80211_s1g_sta_rate_init(), seems more appropriate]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Even though a driver or mac80211 shouldn't produce a
legacy bitrate if sband->bitrates doesn't exist, don't
crash if that is the case either.
This fixes a kernel panic if station dump is run before
last_rate can be updated with a data frame when
sband->bitrates is missing (eg. in S1G bands).
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20201005164522.18069-1-thomas@adapt-ip.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
CAN Transport Protocols offer support for segmented Point-to-Point
communication between CAN nodes via two defined CAN Identifiers.
As CAN frames can only transport a small amount of data bytes
(max. 8 bytes for 'classic' CAN and max. 64 bytes for CAN FD) this
segmentation is needed to transport longer PDUs as needed e.g. for
vehicle diagnosis (UDS, ISO 14229) or IP-over-CAN traffic.
This protocol driver implements data transfers according to
ISO 15765-2:2016 for 'classic' CAN and CAN FD frame types.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/r/20200928200404.82229-1-socketcan@hartkopp.net
[mkl: Removed "WITH Linux-syscall-note" from isotp.c.
Fixed indention, a checkpatch warning and typos.
Replaced __u{8,32} by u{8,32}.
Removed always false (optlen < 0) check in isotp_setsockopt().]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
For now, this function simply aligns the data at the beginning of the
pages. This can eventually be expanded to shift data to the correct
offsets when we're ready.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This patch adds the ability to "read a hole" into a set of XDR data
pages by taking the following steps:
1) Shift all data after the current xdr->p to the right, possibly into
the tail,
2) Zero the specified range, and
3) Update xdr->p to point beyond the hole.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
xdr_shrink_pagelen() is very similar to what we need for hole expansion,
so split out the common code into its own function that can be used by
both functions.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
I don't need the entire align pages code for READ_PLUS, so split out the
part I do need so I don't need to reimplement anything.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
I'll need this for READ_PLUS to help figure out the offset where page
data is stored at, but it might also be useful for other things.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
I'm going to need this bit of code in a few places for READ_PLUS
decoding, so let's make it a helper function.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Error queue are not yet implemented in CAN-raw sockets.
The problem: a userland call to recvmsg(soc, msg, MSG_ERRQUEUE) on a
CAN-raw socket would unqueue messages from the normal queue without
any kind of error or warning. As such, it prevented CAN drivers from
using the functionalities that relies on the error queue such as
skb_tx_timestamp().
SCM_CAN_RAW_ERRQUEUE is defined as the type for the CAN raw error
queue. SCM stands for "Socket control messages". The name is inspired
from SCM_J1939_ERRQUEUE of include/uapi/linux/can/j1939.h.
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/r/20200926162527.270030-1-mailhol.vincent@wanadoo.fr
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This patch fixes the kernel doc for can_rcv_list_find() which was broken in commit:
3ee6d2bebe ("can: af_can: rename find_rcv_list() to can_rcv_list_find()")
while renaming a variable, but forgetting to rename the kernel doc, too.
Link: http://lore.kernel.org/r/20201006203748.1750156-2-mkl@pengutronix.de
Fixes: 3ee6d2bebe ("can: af_can: rename find_rcv_list() to can_rcv_list_find()")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Perform header flags validation through the policy.
Only pause command supports ETHTOOL_FLAG_STATS. Create a separate
policy to be able to express that in policy dumps to user space.
Note that even though the core will validate the header policy,
it cannot record multiple layers of attributes and we have to
re-parse header sub-attrs. When doing so we could skip attribute
validation, or use most permissive policy. Opt for the former.
We will no longer return the extack cookie for flags but since
we only added first new flag in this release it's not expected
that any user space had a chance to make use of it.
v2: - remove the re-validation in ethnl_parse_header_dev_get()
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We don't have good validation policy for existing unsigned int attrs
which serve as flags (for new ones we could use NLA_BITFIELD32).
With increased use of policy dumping having the validation be
expressed as part of the policy is important. Add validation
policy in form of a mask of supported/valid bits.
Support u64 in the uAPI to be future-proof, but really for now
the embedded mask member can only hold 32 bits, so anything with
bit 32+ set will always fail validation.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
To get the most out of parsing by the core, and to allow dumping
full policies we need to specify which policy applies to nested
attrs. For headers it's ethnl_header_policy.
$ sed -i 's@\(ETHTOOL_A_.*HEADER\].*=\) { .type = NLA_NESTED },@\1\n\t\tNLA_POLICY_NESTED(ethnl_header_policy),@' net/ethtool/*
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since ethtool uses strict attribute validation there's no need
to initialize all attributes in policy tables. 0 is NLA_UNSPEC
which is going to be rejected. Remove the NLA_REJECTs.
Similarly attributes above maxattrs are rejected, so there's
no need to always size the policy tables to ETHTOOL_A_..._MAX.
v2: - new patch
Suggested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Similarly to get commands wire up the policies of set commands
to get parsing by the core and policy dumps.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wire up policies for get commands in struct nla_policy of the ethtool
family. Make use of genetlink code attr validation and parsing, as well
as allow dumping policies to user space.
For every ETHTOOL_MSG_*_GET:
- add 'ethnl_' prefix to policy name
- add extern declaration in net/ethtool/netlink.h
- wire up the policy & attr in ethtool_genl_ops[].
- remove .request_policy and .max_attr from ethnl_request_ops.
Obviously core only records the first "layer" of parsed attrs
so we still need to parse the sub-attrs of the nested header
attribute.
v2:
- merge of patches 1 and 2 from v1
- remove stray empty lines in ops
- also remove .max_attr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
use new helper for netstats settings
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
-----BEGIN PGP SIGNATURE-----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=dmWc
-----END PGP SIGNATURE-----
Merge tag 'rxrpc-fixes-20201005' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Miscellaneous fixes
Here are some miscellaneous rxrpc fixes:
(1) Fix the xdr encoding of the contents read from an rxrpc key.
(2) Fix a BUG() for a unsupported encoding type.
(3) Fix missing _bh lock annotations.
(4) Fix acceptance handling for an incoming call where the incoming call
is encrypted.
(5) The server token keyring isn't network namespaced - it belongs to the
server, so there's no need. Namespacing it means that request_key()
fails to find it.
(6) Fix a leak of the server keyring.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Define get/set phy tunable callbacks in ethtool ops.
This will allow MAC drivers with integrated PHY still to implement
these tunables.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently skb_dump has a restriction to only dump full packet for the
first 5 socket buffers, then only headers will be printed. Remove this
arbitrary and confusing restriction, which is only documented vaguely
("up to") in the comments above the prototype.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We got reports from GKE customers flows being reset by netfilter
conntrack unless nf_conntrack_tcp_be_liberal is set to 1.
Traces seemed to suggest ACK packet being dropped by the
packet capture, or more likely that ACK were received in the
wrong order.
wscale=7, SYN and SYNACK not shown here.
This ACK allows the sender to send 1871*128 bytes from seq 51359321 :
New right edge of the window -> 51359321+1871*128=51598809
09:17:23.389210 IP A > B: Flags [.], ack 51359321, win 1871, options [nop,nop,TS val 10 ecr 999], length 0
09:17:23.389212 IP B > A: Flags [.], seq 51422681:51424089, ack 1577, win 268, options [nop,nop,TS val 999 ecr 10], length 1408
09:17:23.389214 IP A > B: Flags [.], ack 51422681, win 1376, options [nop,nop,TS val 10 ecr 999], length 0
09:17:23.389253 IP B > A: Flags [.], seq 51424089:51488857, ack 1577, win 268, options [nop,nop,TS val 999 ecr 10], length 64768
09:17:23.389272 IP A > B: Flags [.], ack 51488857, win 859, options [nop,nop,TS val 10 ecr 999], length 0
09:17:23.389275 IP B > A: Flags [.], seq 51488857:51521241, ack 1577, win 268, options [nop,nop,TS val 999 ecr 10], length 32384
Receiver now allows to send 606*128=77568 from seq 51521241 :
New right edge of the window -> 51521241+606*128=51598809
09:17:23.389296 IP A > B: Flags [.], ack 51521241, win 606, options [nop,nop,TS val 10 ecr 999], length 0
09:17:23.389308 IP B > A: Flags [.], seq 51521241:51553625, ack 1577, win 268, options [nop,nop,TS val 999 ecr 10], length 32384
It seems the sender exceeds RWIN allowance, since 51611353 > 51598809
09:17:23.389346 IP B > A: Flags [.], seq 51553625:51611353, ack 1577, win 268, options [nop,nop,TS val 999 ecr 10], length 57728
09:17:23.389356 IP B > A: Flags [.], seq 51611353:51618393, ack 1577, win 268, options [nop,nop,TS val 999 ecr 10], length 7040
09:17:23.389367 IP A > B: Flags [.], ack 51611353, win 0, options [nop,nop,TS val 10 ecr 999], length 0
netfilter conntrack is not happy and sends RST
09:17:23.389389 IP A > B: Flags [R], seq 92176528, win 0, length 0
09:17:23.389488 IP B > A: Flags [R], seq 174478967, win 0, length 0
Now imagine ACK were delivered out of order and tcp_add_backlog() sets window based on wrong packet.
New right edge of the window -> 51521241+859*128=51631193
Normally TCP stack handles OOO packets just fine, but it
turns out tcp_add_backlog() does not. It can update the window
field of the aggregated packet even if the ACK sequence
of the last received packet is too old.
Many thanks to Alexandre Ferrieux for independently reporting the issue
and suggesting a fix.
Fixes: 4f693b55c3 ("tcp: implement coalescing on backlog queue")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Alexandre Ferrieux <alexandre.ferrieux@orange.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently we skip calling tcp_cleanup_rbuf() when packets
are moved into the OoO queue or simply dropped. In both
cases we still increment tp->copied_seq, and we should
ask the TCP stack to check for ack.
Fixes: c76c695656 ("mptcp: call tcp_cleanup_rbuf on subflows")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently data fin on data packet are not handled properly:
the 'rcv_data_fin_seq' field is interpreted as the last
sequence number carrying a valid data, but for data fin
packet with valid maps we currently store map_seq + map_len,
that is, the next value.
The 'write_seq' fields carries instead the value subseguent
to the last valid byte, so in mptcp_write_data_fin() we
never detect correctly the last DSS map.
Fixes: 7279da6145 ("mptcp: Use MPTCP-level flag for sending DATA_FIN")
Fixes: 1a49b2c2a5 ("mptcp: Handle incoming 32-bit DATA_FIN values")
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The rcu_read_lock() is not supposed to lock the kernel_sendmsg() API
since it has the lock_sock() in qrtr_sendmsg() which will sleep. Hence,
fix it by excluding the locking for kernel_sendmsg().
While at it, let's also use radix_tree_deref_retry() to confirm the
validity of the pointer returned by radix_tree_deref_slot() and use
radix_tree_iter_resume() to resume iterating the tree properly before
releasing the lock as suggested by Doug.
Fixes: a7809ff90c ("net: qrtr: ns: Protect radix_tree_deref_slot() using rcu read locks")
Reported-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Alex Elder <elder@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rejecting non-native endian BTF overlapped with the addition
of support for it.
The rest were more simple overlapping changes, except the
renesas ravb binding update, which had to follow a file
move as well as a YAML conversion.
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
1) Make sure SKB control block is in the proper state during IPSEC
ESP-in-TCP encapsulation. From Sabrina Dubroca.
2) Various kinds of attributes were not being cloned properly when we
build new xfrm_state objects from existing ones. Fix from Antony
Antony.
3) Make sure to keep BTF sections, from Tony Ambardar.
4) TX DMA channels need proper locking in lantiq driver, from Hauke
Mehrtens.
5) Honour route MTU during forwarding, always. From Maciej
Żenczykowski.
6) Fix races in kTLS which can result in crashes, from Rohit
Maheshwari.
7) Skip TCP DSACKs with rediculous sequence ranges, from Priyaranjan
Jha.
8) Use correct address family in xfrm state lookups, from Herbert Xu.
9) A bridge FDB flush should not clear out user managed fdb entries
with the ext_learn flag set, from Nikolay Aleksandrov.
10) Fix nested locking of netdev address lists, from Taehee Yoo.
11) Fix handling of 32-bit DATA_FIN values in mptcp, from Mat Martineau.
12) Fix r8169 data corruptions on RTL8402 chips, from Heiner Kallweit.
13) Don't free command entries in mlx5 while comp handler could still be
running, from Eran Ben Elisha.
14) Error flow of request_irq() in mlx5 is busted, due to an off by one
we try to free and IRQ never allocated. From Maor Gottlieb.
15) Fix leak when dumping netlink policies, from Johannes Berg.
16) Sendpage cannot be performed when a page is a slab page, or the page
count is < 1. Some subsystems such as nvme were doing so. Create a
"sendpage_ok()" helper and use it as needed, from Coly Li.
17) Don't leak request socket when using syncookes with mptcp, from
Paolo Abeni.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (111 commits)
net/core: check length before updating Ethertype in skb_mpls_{push,pop}
net: mvneta: fix double free of txq->buf
net_sched: check error pointer in tcf_dump_walker()
net: team: fix memory leak in __team_options_register
net: typhoon: Fix a typo Typoon --> Typhoon
net: hinic: fix DEVLINK build errors
net: stmmac: Modify configuration method of EEE timers
tcp: fix syn cookied MPTCP request socket leak
libceph: use sendpage_ok() in ceph_tcp_sendpage()
scsi: libiscsi: use sendpage_ok() in iscsi_tcp_segment_map()
drbd: code cleanup by using sendpage_ok() to check page for kernel_sendpage()
tcp: use sendpage_ok() to detect misused .sendpage
nvme-tcp: check page by sendpage_ok() before calling kernel_sendpage()
net: add WARN_ONCE in kernel_sendpage() for improper zero-copy send
net: introduce helper sendpage_ok() in include/linux/net.h
net: usb: pegasus: Proper error handing when setting pegasus' MAC address
net: core: document two new elements of struct net_device
netlink: fix policy dump leak
net/mlx5e: Fix race condition on nhe->n pointer in neigh update
net/mlx5e: Fix VLAN create flow
...
If someone calls setsockopt() twice to set a server key keyring, the first
keyring is leaked.
Fix it to return an error instead if the server key keyring is already set.
Fixes: 17926a7932 ("[AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both")
Signed-off-by: David Howells <dhowells@redhat.com>
The keyring containing the server's tokens isn't network-namespaced, so it
shouldn't be looked up with a network namespace. It is expected to be
owned specifically by the server, so namespacing is unnecessary.
Fixes: a58946c158 ("keys: Pass the network namespace into request_key mechanism")
Signed-off-by: David Howells <dhowells@redhat.com>
When a new incoming call arrives at an userspace rxrpc socket on a new
connection that has a security class set, the code currently pushes it onto
the accept queue to hold a ref on it for the socket. This doesn't work,
however, as recvmsg() pops it off, notices that it's in the SERVER_SECURING
state and discards the ref. This means that the call runs out of refs too
early and the kernel oopses.
By contrast, a kernel rxrpc socket manually pre-charges the incoming call
pool with calls that already have user call IDs assigned, so they are ref'd
by the call tree on the socket.
Change the mode of operation for userspace rxrpc server sockets to work
like this too. Although this is a UAPI change, server sockets aren't
currently functional.
Fixes: 248f219cb8 ("rxrpc: Rewrite the data and ack handling code")
Signed-off-by: David Howells <dhowells@redhat.com>
conn->state_lock may be taken in softirq mode, but a previous patch
replaced an outer lock in the response-packet event handling code, and lost
the _bh from that when doing so.
Fix this by applying the _bh annotation to the state_lock locking.
Fixes: a1399f8bb0 ("rxrpc: Call channels should have separate call number spaces")
Signed-off-by: David Howells <dhowells@redhat.com>
If rxrpc_read() (which allows KEYCTL_READ to read a key), sees a token of a
type it doesn't recognise, it can BUG in a couple of places, which is
unnecessary as it can easily get back to userspace.
Fix this to print an error message instead.
Fixes: 99455153d0 ("RxRPC: Parse security index 5 keys (Kerberos 5)")
Signed-off-by: David Howells <dhowells@redhat.com>
The session key should be encoded with just the 8 data bytes and
no length; ENCODE_DATA precedes it with a 4 byte length, which
confuses some existing tools that try to parse this format.
Add an ENCODE_BYTES macro that does not include a length, and use
it for the key. Also adjust the expected length.
Note that commit 774521f353 ("rxrpc: Fix an assertion in
rxrpc_read()") had fixed a BUG by changing the length rather than
fixing the encoding. The original length was correct.
Fixes: 99455153d0 ("RxRPC: Parse security index 5 keys (Kerberos 5)")
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
A driver may refuse to enable VLAN filtering for any reason beyond what
the DSA framework cares about, such as:
- having tc-flower rules that rely on the switch being VLAN-aware
- the particular switch does not support VLAN, even if the driver does
(the DSA framework just checks for the presence of the .port_vlan_add
and .port_vlan_del pointers)
- simply not supporting this configuration to be toggled at runtime
Currently, when a driver rejects a configuration it cannot support, it
does this from the commit phase, which triggers various warnings in
switchdev.
So propagate the prepare phase to drivers, to give them the ability to
refuse invalid configurations cleanly and avoid the warnings.
Since we need to modify all function prototypes and check for the
prepare phase from within the drivers, take that opportunity and move
the existing driver restrictions within the prepare phase where that is
possible and easy.
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Woojung Huh <woojung.huh@microchip.com>
Cc: Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: Landen Chao <Landen.Chao@mediatek.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Vivien Didelot <vivien.didelot@gmail.com>
Cc: Jonathan McDowell <noodles@earth.li>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The only usage of these is to assign their address to the small_ops field
in the genl_family struct, which is a const pointer, and applying
ARRAY_SIZE() on them. Make them const to allow the compiler to put them
in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The only usages of mptcp_pm_ops is to assign its address to the small_ops
field of the genl_family struct, which is a const pointer, and applying
ARRAY_SIZE() on it. Make it const to allow the compiler to put it in
read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Openvswitch allows to drop a packet's Ethernet header, therefore
skb_mpls_push() and skb_mpls_pop() might be called with ethernet=true
and mac_len=0. In that case the pointer passed to skb_mod_eth_type()
doesn't point to an Ethernet header and the new Ethertype is written at
unexpected locations.
Fix this by verifying that mac_len is big enough to contain an Ethernet
header.
Fixes: fa4e0f8855 ("net/sched: fix corrupted L2 header with MPLS 'push' and 'pop' actions")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Acked-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Although we take RTNL on dump path, it is possible to
skip RTNL on insertion path. So the following race condition
is possible:
rtnl_lock() // no rtnl lock
mutex_lock(&idrinfo->lock);
// insert ERR_PTR(-EBUSY)
mutex_unlock(&idrinfo->lock);
tc_dump_action()
rtnl_unlock()
So we have to skip those temporary -EBUSY entries on dump path
too.
Reported-and-tested-by: syzbot+b47bc4f247856fb4d9e1@syzkaller.appspotmail.com
Fixes: 0fedc63fad ("net_sched: commit action insertions together")
Cc: Vlad Buslov <vladbu@mellanox.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow DSA drivers to make use of devlink port regions, via simple
wrappers.
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow regions to be registered to a devlink port. The same netlink API
is used, but the port index is provided to indicate when a region is a
port region as opposed to a device region.
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
DSA drivers want to create regions on devlink ports as well as the
devlink device instance, in order to export registers and other tables
per port. To keep all this code together in the drivers, have the
devlink ports registered early, so the setup() method can setup both
device and port devlink regions.
v3:
Remove dp->setup
Move common code out of switch statement.
Fix wrong goto
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If a port is unused, still create a devlink port for it, but set the
flavour to unused. This allows us to attach devlink regions to the
port, etc.
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Not all ports of a switch need to be used, particularly in embedded
systems. Add a port flavour for ports which physically exist in the
switch, but are not connected to the front panel etc, and so are
unused. By having unused ports present in devlink, it gives a more
accurate representation of the hardware. It also allows regions to be
associated to such ports, so allowing, for example, to determine
unused ports are correctly powered off, or to compare probable reset
defaults of unused ports to used ports experiences issues.
Actually registering unused ports and setting the flavour to unused is
optional. The DSA core will register all such switch ports, but such
ports are expected to be limited in number. Bigger ASICs may decide
not to list unused ports.
v2:
Expand the description about why it is useful
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter updates for net-next
The following patchset contains Netfilter updates for net-next:
1) Rename 'searched' column to 'clashres' in conntrack /proc/ stats
to amend a recent patch, from Florian Westphal.
2) Remove unused nft_data_debug(), from YueHaibing.
3) Remove unused definitions in IPVS, also from YueHaibing.
4) Fix user data memleak in tables and objects, this is also amending
a recent patch, from Jose M. Guisado.
5) Use nla_memdup() to allocate user data in table and objects, also
from Jose M. Guisado
6) User data support for chains, from Jose M. Guisado
7) Remove unused definition in nf_tables_offload, from YueHaibing.
8) Use kvzalloc() in ip_set_alloc(), from Vasily Averin.
9) Fix false positive reported by lockdep in nfnetlink mutexes,
from Florian Westphal.
10) Extend fast variant of cmp for neq operation, from Phil Sutter.
11) Implement fast bitwise variant, also from Phil Sutter.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
A typical use of bitwise expression is to mask out parts of an IP
address when matching on the network part only. Optimize for this common
use with a fast variant for NFT_BITWISE_BOOL-type expressions operating
on 32bit-sized values.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Add a boolean indicating NFT_CMP_NEQ. To include it into the match
decision, it is sufficient to XOR it with the data comparison's result.
While being at it, store the mask that is calculated during expression
init and free the eval routine from having to recalculate it each time.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
From time to time there are lockdep reports similar to this one:
WARNING: possible circular locking dependency detected
------------------------------------------------------
000000004f61aa56 (&table[i].mutex){+.+.}, at: nfnl_lock [nfnetlink]
but task is already holding lock:
[..] (&net->nft.commit_mutex){+.+.}, at: nf_tables_valid_genid [nf_tables]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&net->nft.commit_mutex){+.+.}:
[..]
nf_tables_valid_genid+0x18/0x60 [nf_tables]
nfnetlink_rcv_batch+0x24c/0x620 [nfnetlink]
nfnetlink_rcv+0x110/0x140 [nfnetlink]
netlink_unicast+0x12c/0x1e0
[..]
sys_sendmsg+0x18/0x40
linux_sparc_syscall+0x34/0x44
-> #0 (&table[i].mutex){+.+.}:
[..]
nfnl_lock+0x24/0x40 [nfnetlink]
ip_set_nfnl_get_byindex+0x19c/0x280 [ip_set]
set_match_v1_checkentry+0x14/0xc0 [xt_set]
xt_check_match+0x238/0x260 [x_tables]
__nft_match_init+0x160/0x180 [nft_compat]
[..]
sys_sendmsg+0x18/0x40
linux_sparc_syscall+0x34/0x44
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&net->nft.commit_mutex);
lock(&table[i].mutex);
lock(&net->nft.commit_mutex);
lock(&table[i].mutex);
Lockdep considers this an ABBA deadlock because the different nfnl subsys
mutexes reside in the same lockdep class, but this is a false positive.
CPU1 table[i] refers to the nftables subsys mutex, whereas CPU1 locks
the ipset subsys mutex.
Yi Che reported a similar lockdep splat, this time between ipset and
ctnetlink subsys mutexes.
Time to place them in distinct classes to avoid these warnings.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Vlad Buslov
Florian Westphal
Eric Dumazet
Wang Hai
Jakub Kicinski
Alexander Duyck
Heiner Kallweit
Björn Töpel
Moshe Shemesh
Ido Schimmel
Peter Zijlstra
Christophe JAILLET
Eyal Birger
Kurt Kanzenbach
Stefano Garzarella
Ricardo Dias
Paul Moore
Jason Gunthorpe
David Howells
Jens Axboe
Marek Majtyka
Yejune Deng
Randy Dunlap
Julian Wiedmann
Paolo Abeni
Geliang Tang
Christian Eggers
Vadim Fedorenko
Anmol Karn
Numan Siddique
Magnus Karlsson
Oliver Hartkopp
Bhaumik Bhatt
Oliver Herms
Jacob Keller
Eric Biggers
Karsten Graul
Georg Kohmann
Dominique Martinet
Jianyong Wu
Sebastian Andrzej Siewior
Florian Fainelli
Zhang Changzhong
Loic Poulain
Florian Klink
John Fastabend
Tariq Toukan
Mauro Carvalho Chehab
Xie He
Christoph Hellwig
Ryan Sharpelletti
Tobias Waldekranz
Martin KaFai Lau
Francis Laniel
Anant Thazhemadam
Taehee Yoo
Lev Stipakov
Alex Shi
Lukas Bulwahn
Xin Long
Zhang Qilong
Lorenzo Bianconi
Jeff Dike
Wenlin Kang
Johannes Berg
Joel Stanley
Thierry Reding
Menglong Dong
Linus Torvalds
Alexander Lobakin
Parav Pandit
Felix Fietkau
Claire Chang
Vincent Bernat
Martin Schiller
Chuck Lever
Howard Chung
Sergey Shtylyov
Archie Pusaka
Ursula Braun
Mao Wenan
Menglong Dong
Yu Kuai
Horatiu Vultur
Tanner Love
Stefano Brivio
Ole Bjørn Midtbø
Sathish Narasimman
Daniel Winkler
Peilin Ye
Dmitry Safonov
Dan Carpenter
Wang Qing
Allen Pais
Mathy Vanhoef
Pradeep Kumar Chitrapu
Rajkumar Manoharan
Colin Ian King
Vamsi Krishna
Rohan Dutta
Julia Lawall
Vladimir Oltean
Eelco Chaudron
Geert Uytterhoeven
Davide Caratti
Guillaume Nault
Eric Van Hensbergen
Aleksandr Nogikh
Tom Rix
YueHaibing
Yuchung Cheng
Petr Malat
Andrew Lunn
Pablo Neira Ayuso
wenxu
Hangbin Liu
Jozsef Kadlecsik
Jose M. Guisado Gomez
Nikolay Aleksandrov
Gustavo A. R. Silva
Hoang Huu Le
Jon Maloy
Alexander Ovechkin
Jason A. Donenfeld
Ye Bin
Henrik Bjoernlund
Arnd Bergmann
Tung Nguyen
Leon Romanovsky
Yi Li
Jeff Vander Stoep
Willy Tarreau
Arjun Roy
zhuoliang zhang
Neal Cardwell
Ke Li
Di Zhu
Toke Høiland-Jørgensen
Matthieu Baerts
Geert Uytterhoeven
Defang Bo
Roi Dayan
Martijn de Gouw
Roberto Bergantinos Corpas
Saeed Mirzamohammadi
Timothée COCAULT
Francesco Ruggeri
longguang.yue
Dan Aloni
Artur Molchanov
Alex Dewar
Lorenz Bauer
Yonghong Song
Mathieu Desnoyers
Cong Wang
Or Cohen
Ilya Dryomov
Julian Anastasov
Daniel Borkmann
David Ahern
Pujin Shi
Rohit Maheshwari
Manjunath Patil
Nikita V. Shirokov
Marc Kleine-Budde
Dumitru Ceara
Thomas Pedersen
Anna Schumaker
Vincent Mailhol
Fabian Frederick
David S. Miller
Igor Russkikh
Manivannan Sadhasivam
Marc Dionne
Rikard Falkeborn
Phil Sutter