Add a little more stucture to the ALU/JMP documentation with sections and
improve the example text.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220103183556.41040-3-hch@lst.de
The eBPF instruction set document does not currently document the basic
instruction encoding. Add a section to do that.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220103183556.41040-2-hch@lst.de
Add a new test case with mem_or_null typed register with off > 0 to ensure
it gets rejected by the verifier:
# ./test_verifier 1011
#1009/u check with invalid reg offset 0 OK
#1009/p check with invalid reg offset 0 OK
Summary: 2 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
If we ever get to a point again where we convert a bogus looking <ptr>_or_null
typed register containing a non-zero fixed or variable offset, then lets not
reset these bounds to zero since they are not and also don't promote the register
to a <ptr> type, but instead leave it as <ptr>_or_null. Converting to a unknown
register could be an avenue as well, but then if we run into this case it would
allow to leak a kernel pointer this way.
Fixes: f1174f77b5 ("bpf/verifier: rework value tracking")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
sock_map_link() is called to update a sockmap entry with a sk. But, if the
sock_map_init_proto() call fails then we return an error to the map_update
op against the sockmap. In the error path though we need to cleanup psock
and dec the refcnt on any programs associated with the map, because we
refcnt them early in the update process to ensure they are pinned for the
psock. (This avoids a race where user deletes programs while also updating
the map with new socks.)
In current code we do the prog refcnt dec explicitely by calling
bpf_prog_put() when the program was found in the map. But, after commit
'38207a5e81230' in this error path we've already done the prog to psock
assignment so the programs have a reference from the psock as well. This
then causes the psock tear down logic, invoked by sk_psock_put() in the
error path, to similarly call bpf_prog_put on the programs there.
To be explicit this logic does the prog->psock assignment:
if (msg_*)
psock_set_prog(...)
Then the error path under the out_progs label does a similar check and
dec with:
if (msg_*)
bpf_prog_put(...)
And the teardown logic sk_psock_put() does ...
psock_set_prog(msg_*, NULL)
... triggering another bpf_prog_put(...). Then KASAN gives us this splat,
found by syzbot because we've created an inbalance between bpf_prog_inc and
bpf_prog_put calling put twice on the program.
BUG: KASAN: vmalloc-out-of-bounds in __bpf_prog_put kernel/bpf/syscall.c:1812 [inline]
BUG: KASAN: vmalloc-out-of-bounds in __bpf_prog_put kernel/bpf/syscall.c:1812 [inline] kernel/bpf/syscall.c:1829
BUG: KASAN: vmalloc-out-of-bounds in bpf_prog_put+0x8c/0x4f0 kernel/bpf/syscall.c:1829 kernel/bpf/syscall.c:1829
Read of size 8 at addr ffffc90000e76038 by task syz-executor020/3641
To fix clean up error path so it doesn't try to do the bpf_prog_put in the
error path once progs are assigned then it relies on the normal psock
tear down logic to do complete cleanup.
For completness we also cover the case whereh sk_psock_init_strp() fails,
but this is not expected because it indicates an incorrect socket type
and should be caught earlier.
Fixes: 38207a5e81 ("bpf, sockmap: Attach map progs to psock early for feature probes")
Reported-by: syzbot+bb73e71cf4b8fd376a4f@syzkaller.appspotmail.com
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220104214645.290900-1-john.fastabend@gmail.com
Applications can be confused slightly because we do not always return the
same error code as expected, e.g. what the TCP stack normally returns. For
example on a sock err sk->sk_err instead of returning the sock_error we
return EAGAIN. This usually means the application will 'try again'
instead of aborting immediately. Another example, when a shutdown event
is received we should immediately abort instead of waiting for data when
the user provides a timeout.
These tend to not be fatal, applications usually recover, but introduces
bogus errors to the user or introduces unexpected latency. Before
'c5d2177a72a16' we fell back to the TCP stack when no data was available
so we managed to catch many of the cases here, although with the extra
latency cost of calling tcp_msg_wait_data() first.
To fix lets duplicate the error handling in TCP stack into tcp_bpf so
that we get the same error codes.
These were found in our CI tests that run applications against sockmap
and do longer lived testing, at least compared to test_sockmap that
does short-lived ping/pong tests, and in some of our test clusters
we deploy.
Its non-trivial to do these in a shorter form CI tests that would be
appropriate for BPF selftests, but we are looking into it so we can
ensure this keeps working going forward. As a preview one idea is to
pull in the packetdrill testing which catches some of this.
Fixes: c5d2177a72 ("bpf, sockmap: Fix race in ingress receive verdict with redirect to self")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220104205918.286416-1-john.fastabend@gmail.com
The following error is reported when running "./test_progs -t for_each"
under arm64:
bpf_jit: multi-func JIT bug 58 != 56
[...]
JIT doesn't support bpf-to-bpf calls
The root cause is the size of BPF_PSEUDO_FUNC instruction increases
from 2 to 3 after the address of called bpf-function is settled and
there are two bpf-to-bpf calls in test_pkt_access. The generated
instructions are shown below:
0x48: 21 00 C0 D2 movz x1, #0x1, lsl #32
0x4c: 21 00 80 F2 movk x1, #0x1
0x48: E1 3F C0 92 movn x1, #0x1ff, lsl #32
0x4c: 41 FE A2 F2 movk x1, #0x17f2, lsl #16
0x50: 81 70 9F F2 movk x1, #0xfb84
Fixing it by using emit_addr_mov_i64() for BPF_PSEUDO_FUNC, so
the size of jited image will not change.
Fixes: 69c087ba62 ("bpf: Add bpf_for_each_map_elem() helper")
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211231151018.3781550-1-houtao1@huawei.com
The tc_redirect umounts /sys in the new namespace, which can be
mounted as shared and cause global umount. The lazy umount also
takes down mounted trees under /sys like debugfs, which won't be
available after sysfs mounts again and could cause fails in other
tests.
# cat /proc/self/mountinfo | grep debugfs
34 23 0:7 / /sys/kernel/debug rw,nosuid,nodev,noexec,relatime shared:14 - debugfs debugfs rw
# cat /proc/self/mountinfo | grep sysfs
23 86 0:22 / /sys rw,nosuid,nodev,noexec,relatime shared:2 - sysfs sysfs rw
# mount | grep debugfs
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
# ./test_progs -t tc_redirect
#164 tc_redirect:OK
Summary: 1/4 PASSED, 0 SKIPPED, 0 FAILED
# mount | grep debugfs
# cat /proc/self/mountinfo | grep debugfs
# cat /proc/self/mountinfo | grep sysfs
25 86 0:22 / /sys rw,relatime shared:2 - sysfs sysfs rw
Making the sysfs private under the new namespace so the umount won't
trigger the global sysfs umount.
Reported-by: Hangbin Liu <haliu@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jussi Maki <joamaki@gmail.com>
Link: https://lore.kernel.org/bpf/20220104121030.138216-1-jolsa@kernel.org
This patch introduces new probes to check whether the kernel supports
instruction set extensions v2 and v3. The first introduced eBPF
instructions BPF_J{LT,LE,SLT,SLE} in commit 92b31a9af7 ("bpf: add
BPF_J{LT,LE,SLT,SLE} instructions"). The second introduces 32-bit
variants of all jump instructions in commit 092ed0968b ("bpf:
verifier support JMP32").
These probes are useful for userspace BPF projects that want to use newer
instruction set extensions on newer kernels, to reduce the programs'
sizes or their complexity. LLVM already provides an mcpu=probe option to
automatically probe the kernel and select the newest-supported
instruction set extension. That is however not flexible enough for all
use cases. For example, in Cilium, we only want to use the v3
instruction set extension on v5.10+, even though it is supported on all
kernels v5.1+.
Signed-off-by: Paul Chaignon <paul@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/3bfedcd9898c1f41ac67ca61f144fec84c6c3a92.1641314075.git.paul@isovalent.com
This patch introduces a new probe to check whether the verifier supports
bounded loops as introduced in commit 2589726d12 ("bpf: introduce
bounded loops"). This patch will allow BPF users such as Cilium to probe
for loop support on startup and only unconditionally unroll loops on
older kernels.
The results are displayed as part of the miscellaneous section, as shown
below.
$ bpftool feature probe | grep loops
Bounded loop support is available
$ bpftool feature probe macro | grep LOOPS
#define HAVE_BOUNDED_LOOPS
$ bpftool feature probe -j | jq .misc
{
"have_large_insn_limit": true,
"have_bounded_loops": true
}
Signed-off-by: Paul Chaignon <paul@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/f7807c0b27d79f48e71de7b5a99c680ca4bd0151.1641314075.git.paul@isovalent.com
There is currently a single miscellaneous feature probe,
HAVE_LARGE_INSN_LIMIT, to check for the 1M instructions limit in the
verifier. Subsequent patches will add additional miscellaneous probes,
which follow the same pattern at the existing probe. This patch
therefore refactors the probe to avoid code duplication in subsequent
patches.
The BPF program type and the checked error numbers in the
HAVE_LARGE_INSN_LIMIT probe are changed to better generalize to other
probes. The feature probe retains its current behavior despite those
changes.
Signed-off-by: Paul Chaignon <paul@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/956c9329a932c75941194f91790d01f31dfbe01b.1641314075.git.paul@isovalent.com
Horatiu Vultur says:
====================
net: lan966x: Extend switchdev with mdb support
This patch series extends lan966x with mdb support by implementing
the switchdev callbacks: SWITCHDEV_OBJ_ID_PORT_MDB and
SWITCHDEV_OBJ_ID_HOST_MDB.
It adds support for both ipv4/ipv6 entries and l2 entries.
v2->v3:
- rename PGID_FIRST and PGID_LAST to PGID_GP_START and PGID_GP_END
- don't forget and relearn an entry for the CPU if there are more
references to the cpu.
v1->v2:
- rename lan966x_mac_learn_impl to __lan966x_mac_learn
- rename lan966x_mac_cpu_copy to lan966x_mac_ip_learn
- fix grammar and typos in comments and commit messages
- add reference counter for entries that copy frames to CPU
====================
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Extend lan966x driver with mdb support by implementing the switchdev
calls: SWITCHDEV_OBJ_ID_PORT_MDB and SWITCHDEV_OBJ_ID_HOST_MDB.
It is allowed to add both ipv4/ipv6 entries and l2 entries. To add
ipv4/ipv6 entries is not required to use the PGID table while for l2
entries it is required. The PGID table is much smaller than MAC table
so only fewer l2 entries can be added.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The first entries in the PGID table are used by the front ports while
the last entries are used for different purposes like flooding mask,
copy to CPU, etc. So add these macros to define which entries can be
used for general purpose.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Extend mac functionality with the function lan966x_mac_ip_learn. This
function adds an entry in the MAC table for IP multicast addresses.
These entries can copy a frame to the CPU but also can forward on the
front ports.
This functionality is needed for mdb support. In case the CPU and some
of the front ports subscribe to an IP multicast address.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Golle says:
====================
net: ethernet: mtk_eth_soc: refactoring and Clause 45
Rework value and type of mdio read and write functions in mtk_eth_soc
and generally clean up and unify both functions.
Then add support to access Clause 45 phy registers, using newly
introduced helper inline functions added by a patch Russell King has
suggested in a reply to an earlier version of this series [1].
All three commits are tested on the Bananapi BPi-R64 board having
MediaTek MT7531BE DSA gigE switch using clause 22 MDIO and
Ubiquiti UniFi 6 LR access point having Aquantia AQR112C PHY using
clause 45 MDIO.
[1]: https://lore.kernel.org/netdev/Ycr5Cna76eg2B0An@shell.armlinux.org.uk/
v11: also address return value of mtk_mdio_busy_wait
v10: correct order of SoB lines in 2/3, change patch order in series
v9: improved formatting and Cc missing maintainer
v8: add patch from Russel King, switch to bitfield helper macros
v7: remove unneeded variables and order OR-ed call parameters
v6: further clean up functions and more cleanly separate patches
v5: fix wrong variable name in first patch covered by follow-up patch
v4: clean-up return values and types, split into two commits
v3: return -1 instead of 0xffff on error in _mtk_mdio_write
v2: use MII_DEVADDR_C45_SHIFT and MII_REGADDR_C45_MASK to extract
device id and register address. Unify read and write functions to
have identical types and parameter names where possible as we are
anyway already replacing both function bodies.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement read and write access to IEEE 802.3 Clause 45 Ethernet
phy registers while making use of new mdiobus_c45_regad and
mdiobus_c45_devad helpers.
Tested on the Ubiquiti UniFi 6 LR access point featuring
MediaTek MT7622BV WiSoC with Aquantia AQR112C.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a couple of helpers and definitions to extract the clause 45 regad
and devad fields from the regnum passed into MDIO drivers.
Tested-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of returning -1 (-EPERM) when MDIO bus is stuck busy
while writing or 0xffff if it happens while reading, return the
appropriate -ETIMEDOUT. Also fix return type to int instead of u32.
Refactor functions to use bitfield helpers instead of having various
masking and shifting constants in the code, which also results in the
register definitions in the header file being more obviously related
to what is stated in the MediaTek's Reference Manual.
Fixes: 656e705243 ("net-next: mediatek: add support for MT7623 ethernet")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Depending on BIOS configuration IOSM driver exchanges
protocol required for putting device into D3L2 or D3L1.2.
ipc_pcie_suspend_s2idle() is implemented to put device to D3L1.2.
This patch forces PCI core know this device should stay at D0.
- pci_save_state()is expensive since it does a lot of slow PCI
config reads.
The reported issue is not observed on x86 platform. The supurios
wake on AMD platform needs to be futher debugged with orignal patch
submitter [1]. Also the impact of adding pci_save_state() needs to be
assessed by testing it on other platforms.
This reverts commit f4dd5174e273("net: wwan: iosm: Keep device
at D0 for s2idle case").
[1] https://lore.kernel.org/all/20211224081914.345292-2-kai.heng.feng@canonical.com/
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Link: https://lore.kernel.org/r/20220104150213.1894-1-m.chetan.kumar@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* mac80211: allow non-standard VHT MCSes 10/11
* mac80211: add sleepable station iterator for drivers
* nl80211: clarify a comment
* mac80211: small cleanup to use typed element helpers
-----BEGIN PGP SIGNATURE-----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=m+bZ
-----END PGP SIGNATURE-----
Merge tag 'mac80211-next-for-net-next-2022-01-04' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Just a few more changes:
- mac80211: allow non-standard VHT MCSes 10/11
- mac80211: add sleepable station iterator for drivers
- nl80211: clarify a comment
- mac80211: small cleanup to use typed element helpers
* tag 'mac80211-next-for-net-next-2022-01-04' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next:
mac80211: use ieee80211_bss_get_elem()
nl80211: clarify comment for mesh PLINK_BLOCKED state
mac80211: Add stations iterator where the iterator function may sleep
mac80211: allow non-standard VHT MCS-10/11
====================
Link: https://lore.kernel.org/r/20220104153403.69749-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When a mesh link is in blocked state, it is very useful to still allow
auth requests from the peer to re-establish it.
When a remote node is power cycled, the peer state can easily end up
in blocked state if multiple auth attempts are performed. Since this
can lead to several minutes of downtime, we should accept auth attempts
of the peer after it has come back.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211220105147.88625-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_iterate_active_interfaces() and
ieee80211_iterate_active_interfaces_atomic() already exist, where the
former allows the iterator function to sleep. Add
ieee80211_iterate_stations() which is similar to
ieee80211_iterate_stations_atomic() but allows the iterator to sleep.
This is needed for adding SDIO support to the rtw88 driver. Some
interators there are reading or writing registers. With the SDIO ops
(sdio_readb, sdio_writeb and friends) this means that the iterator
function may sleep.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20211228211501.468981-2-martin.blumenstingl@googlemail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some AP can possibly try non-standard VHT rate and mac80211 warns and drops
packets, and leads low TCP throughput.
Rate marked as a VHT rate but data is invalid: MCS: 10, NSS: 2
WARNING: CPU: 1 PID: 7817 at net/mac80211/rx.c:4856 ieee80211_rx_list+0x223/0x2f0 [mac8021
Since commit c27aa56a72 ("cfg80211: add VHT rate entries for MCS-10 and MCS-11")
has added, mac80211 adds this support as well.
After this patch, throughput is good and iw can get the bitrate:
rx bitrate: 975.1 MBit/s VHT-MCS 10 80MHz short GI VHT-NSS 2
or
rx bitrate: 1083.3 MBit/s VHT-MCS 11 80MHz short GI VHT-NSS 2
Buglink: https://bugzilla.suse.com/show_bug.cgi?id=1192891
Reported-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/20220103013623.17052-1-pkshih@realtek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Return value from efx_mcdi_rpc() directly instead
of taking this in another redundant variable.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: CGEL ZTE <cgel.zte@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
xu xin says:
====================
ipv4: Namespaceify two sysctls related with mtu
The following patch series enables the min_pmtu and mtu_expires to
be visible and configurable per net namespace. Different namespace
application might have different requirements on the setting of
min_pmtu and mtu_expires.
If these two patches are applied, inside a net namespace we create,
we can see two more sysctls under /proc/sys/net/ipv4/route:
1. min_pmtu
2. mtu_expires
where min_pmtu and mtu_expires are configurable.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch enables the sysctl mtu_expires to be configured per net
namespace.
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch enables the sysctl min_pmtu to be configured per net
namespace.
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Recent bpf-next merge brought in header changes which uncovered
includes missing in net-next which were not present in bpf-next.
Build problems happen only on less-popular arches like hppa,
sparc, alpha etc.
I could repro the build problem with ice but not the mlx5 problem
Abdul was reporting. mlx5 does look like it should include filter.h,
anyway.
Reported-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Fixes: e63a023489 ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next")
Link: https://lore.kernel.org/all/7c03768d-d948-c935-a7ab-b1f963ac7eed@linux.vnet.ibm.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds support for scatter gather DMA. DMA in PMAC splits
the packet into several buffers when the MTU on the CPU port is
less than the MTU of the switch. The first buffer starts at an
offset of NET_IP_ALIGN. In subsequent buffers, dma ignores the
offset. Thanks to this patch, the user can still connect to the
device in such a situation. For normal configurations, the patch
has no effect on performance.
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for external timestamp and periodic signal output.
TJA1103 have one periodic signal and one external time stamp signal that
can be multiplexed on all 11 gpio pins.
The periodic signal can be only enabled or disabled. Have no start time
and if is enabled will be generated with a period of one second in sync
with the LTC seconds counter. The phase change is possible only with a
half of a second.
The external timestamp signal has no interrupt and no valid bit and
that's why the timestamps are handled by polling in .do_aux_work.
Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@oss.nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Blakey says:
====================
net/sched: Pass originating device to drivers offloading ct connection
Currently, drivers register to a ct zone that can be shared by multiple
devices. This can be inefficient for the driver to offload, as it
needs to handle all the cases where the tuple can come from,
instead of where it's most likely will arive from.
For example, consider the following tc rules:
tc filter add dev dev1 ... flower action ct commit zone 5 \
action mirred egress redirect dev dev2
tc filter add dev dev2 ... flower action ct zone 5 \
action goto chain chain 2
tc filter add dev dev2 ... flower ct_state +trk+est ... \
action mirred egress redirect dev dev1
Both dev2 and dev1 register to the zone 5 flow table (created
by act_ct). A tuple originating on dev1, going to dev2, will
be offloaded to both devices, and both will need to offload
both directions, resulting in 4 total rules. The traffic
will only hit originiating tuple on dev1, and reply tuple
on dev2.
By passing the originating device that created the connection
with the tuple, dev1 can choose to offload only the originating
tuple, and dev2 only the reply tuple. Resulting in a more
efficient offload.
The first patch adds an act_ct nf conntrack extension, to
temporarily store the originiating device from the skb before
offloading the connection once the connection is established.
Once sent to offload, it fills the tuple originating device.
The second patch get this information from tuples
which pass in openvswitch.
The third patch is Mellanox driver ct offload implementation using
this information to provide a hint to firmware of where this
offloaded tuple packets will arrive from (LOCAL or UPLINK port),
and thus increase insertion rate.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Get originating device from tuple offload metadata match ingress_ifindex,
and set flow_source hint to either LOCAL for vf/sf reps, UPLINK for
uplink/wire/tunnel devices/bond, or ANY (as before this patch)
for all others.
This allows lower layer (software steering or firmware) to insert the tuple
rule only in one table (either rx or tx) instead of two (rx and tx).
Signed-off-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
To give drivers the originating device information for optimized
connection tracking offload, fill in act ct extension with
ifindex from skb.
Signed-off-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Driver offloading ct tuples can use the information of which devices
received the packets that created the offloaded connections, to
more efficiently offload them only to the relevant device.
Add new act_ct nf conntrack extension, which is used to store the skb
devices before offloading the connection, and then fill in the tuple
iifindex so drivers can get the device via metadata dissector match.
Signed-off-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- bump version strings, by Simon Wunderlich
- allow netlink usage in unprivileged containers, by Linus Lüssing
- remove unneeded variable, by Minghao Chi
-----BEGIN PGP SIGNATURE-----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=iGTA
-----END PGP SIGNATURE-----
Merge tag 'batadv-next-pullrequest-20220103' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
This cleanup patchset includes the following patches:
- bump version strings, by Simon Wunderlich
- allow netlink usage in unprivileged containers, by Linus Lüssing
- remove unneeded variable, by Minghao Chi
* tag 'batadv-next-pullrequest-20220103' of git://git.open-mesh.org/linux-merge:
batman-adv: remove unneeded variable in batadv_nc_init
batman-adv: allow netlink usage in unprivileged containers
batman-adv: Start new development cycle
====================
Link: https://lore.kernel.org/r/20220103171722.1126109-1-sw@simonwunderlich.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
On systems with large numbers of MDIO bus/muxes the message indicating
that a given MDIO bus has been successfully probed is repeated for as
many buses we have, which can eat up substantial boot time for no
reason, demote to a debug print.
Reported-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220103194024.2620-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use dma_set_mask_and_coherent() instead of unrolling it with some
dma_set_mask()+dma_set_coherent_mask().
Moreover, as stated in [1], dma_set_mask() with a 64-bit mask will never
fail if dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.
That said, 'high_dma' can only be 1 after a successful
dma_set_mask_and_coherent().
Simplify code and remove some dead code accordingly, including a now
useless parameter to vxge_device_register().
[1]: https://lkml.org/lkml/2021/6/7/398
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use dma_set_mask_and_coherent() instead of unrolling it with some
dma_set_mask()+dma_set_coherent_mask().
Moreover, as stated in [1], dma_set_mask() with a 64-bit mask will never
fail if dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.
That said, 'dma_flag' can only be 'true' after a successful
dma_set_mask_and_coherent().
Simplify code and remove some dead code accordingly, including the now
useless 'high_dma_flag' field in 'struct s2io_nic'.
[1]: https://lkml.org/lkml/2021/6/7/398
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sorry for being rude but new vendors/drivers are supposed to be disabled
by default, otherwise we will have to manually keep track of all vendors
we are not interested in building.
Fixes: 2f207cbf0d ("net: vertexcom: Add MSE102x SPI support")
CC: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Foster says:
====================
lynx pcs interface cleanup
The current Felix driver (and Seville) rely directly on the lynx_pcs
device. There are other possible PCS interfaces that can be used with
this hardware, so this should be abstracted from felix. The generic
phylink_pcs is used instead.
While going through the code, there were some opportunities to change
some misleading variable names. Those are included in this patch set.
v1->v2
* compile-time fixes for freescale parts
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
pcs-lynx.c used lynx_pcs and lynx as a variable name within the same file.
This standardizes all internal variables to just "lynx"
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A simple variable update from "pcs" to "mdio_device" for the mdio device
will make things a little cleaner.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A simple variable update from "pcs" to "mdio_device" for the mdio device
will make things a little cleaner.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Simple rename of a variable to make things more logical.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove references to lynx_pcs structures so drivers like the Felix DSA
can reference alternate PCS drivers.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In [1], Christoph Hellwig has proposed to remove the wrappers in
include/linux/pci-dma-compat.h.
Some reasons why this API should be removed have been given by Julia
Lawall in [2].
A coccinelle script has been used to perform the needed transformation
Only relevant parts are given below.
@@
expression e1, e2;
@@
- pci_dma_mapping_error(e1, e2)
+ dma_mapping_error(&e1->dev, e2)
[1]: https://lore.kernel.org/kernel-janitors/20200421081257.GA131897@infradead.org/
[2]: https://lore.kernel.org/kernel-janitors/alpine.DEB.2.22.394.2007120902170.2424@hadrien/
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use dma_set_mask_and_coherent() instead of unrolling it with some
dma_set_mask()+dma_set_coherent_mask().
Moreover, as stated in [1], dma_set_mask() with a 64-bit mask will never
fail if dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.
Simplify code and remove some dead code accordingly.
Now that qed_set_coherency_mask() is mostly a single call to
dma_set_mask_and_coherent(), fold it in its only caller.
[1]: https://lkml.org/lkml/2021/6/7/398
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use dma_set_mask_and_coherent() instead of unrolling it with some
dma_set_mask()+dma_set_coherent_mask().
Moreover, as stated in [1], dma_set_mask() with a 64-bit mask will never
fail if dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.
That said, 'pci_using_dac' can only be 1 after a successful
dma_set_mask_and_coherent().
Simplify code and remove some dead code accordingly.
[1]: https://lkml.org/lkml/2021/6/7/398
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christoph Hellwig
Daniel Borkmann
John Fastabend
Hou Tao
Jiri Olsa
Paul Chaignon
David S. Miller
Horatiu Vultur
Daniel Golle
Russell King (Oracle)
M Chetan Kumar
Jakub Kicinski
Johannes Berg
Felix Fietkau
Martin Blumenstingl
Ping-Ke Shih
Minghao Chi
xu xin
Aleksander Jan Bajkowski
Radu Pirea (NXP OSS)
Paul Blakey
Florian Fainelli
Christophe JAILLET
Saeed Mahameed
Colin Foster