Граф коммитов

257 Коммитов

Автор SHA1 Сообщение Дата
Phil Sutter 22e380a649 net: team: convert to using IFF_NO_QUEUE
Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-18 11:55:05 -07:00
Samudrala, Sridhar 45d4122ca7 switchdev: add support for fdb add/del/dump via switchdev_port_obj ops.
- introduce port fdb obj and generic switchdev_port_fdb_add/del/dump()
- use switchdev_port_fdb_add/del/dump in rocker/team/bonding ndo ops.
- add support for fdb obj in switchdev_port_obj_add/del/dump()
- switch rocker to implement fdb ops via switchdev_ops

v3: updated to sync with named union changes.

Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-17 22:49:09 -04:00
Scott Feldman 7889cbee83 switchdev: remove NETIF_F_HW_SWITCH_OFFLOAD feature flag
Roopa said remove the feature flag for this series and she'll work on
bringing it back if needed at a later date.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-12 18:43:55 -04:00
Scott Feldman 85fdb95672 switchdev: cut over to new switchdev_port_bridge_getlink
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-12 18:43:55 -04:00
Scott Feldman 54ba5a0bbc switchdev: cut over to new switchdev_port_bridge_dellink
Rocker, bonding and team and switch over to the new
switchdev_port_bridge_dellink to avoid duplicating code in each driver.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-12 18:43:55 -04:00
Scott Feldman fc8f40d864 switchdev: cut over to new switchdev_port_bridge_setlink
Rocker, bonding, and team can now use the switchdev bridge setlink to parse
raw netlink; no need to duplicate this code in each driver.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-12 18:43:54 -04:00
Jiri Pirko ebb9a03a59 switchdev: s/netdev_switch_/switchdev_/ and s/NETDEV_SWITCH_/SWITCHDEV_/
Turned out that "switchdev" sticks. So just unify all related terms to use
this prefix.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-12 18:43:52 -04:00
Toshiaki Makita b9f4cf7531 team: Don't segment multiple tagged packets on team device
Team devices don't need to segment multiple tagged packets since their
slaves can segment them.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-29 13:33:24 -07:00
David S. Miller 3cef5c5b0b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/cadence/macb.c

Overlapping changes in macb driver, mostly fixes and cleanups
in 'net' overlapping with the integration of at91_ether into
macb in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-09 23:38:02 -04:00
Jiri Pirko 9215f437b8 team: don't traverse port list using rcu in team_set_mac_address
Currently the list is traversed using rcu variant. That is not correct
since dev_set_mac_address can be called which eventually calls
rtmsg_ifinfo_build_skb and there, skb allocation can sleep. So fix this
by remove the rcu usage here.

Fixes: 3d249d4ca7 "net: introduce ethernet teaming device"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-04 16:01:16 -05:00
David S. Miller 71a83a6db6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/rocker/rocker.c

The rocker commit was two overlapping changes, one to rename
the ->vport member to ->pport, and another making the bitmask
expression use '1ULL' instead of plain '1'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-03 21:16:48 -05:00
Jiri Pirko 247f6d0f86 team: allow TSO being set on master
This patch allows TSO being set/unset on the master, so that GSO
segmentation is done after team layer.

Similar patch is present for bonding:
	b0ce3508b2 ("bonding: allow TSO being set on bonding master")
and bridge:
	f902e8812e ("bridge: Add ability to enable TSO")

Suggested-by: Jiri Prochazka <jprochaz@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27 17:11:28 -05:00
Jiri Pirko 57e5956319 team: fix possible null pointer dereference in team_handle_frame
Currently following race is possible in team:

CPU0                                        CPU1
                                            team_port_del
                                              team_upper_dev_unlink
                                                priv_flags &= ~IFF_TEAM_PORT
team_handle_frame
  team_port_get_rcu
    team_port_exists
      priv_flags & IFF_TEAM_PORT == 0
    return NULL (instead of port got
                 from rx_handler_data)
                                              netdev_rx_handler_unregister

The thing is that the flag is removed before rx_handler is unregistered.
If team_handle_frame is called in between, team_port_exists returns 0
and team_port_get_rcu will return NULL.
So do not check the flag here. It is guaranteed by netdev_rx_handler_unregister
that team_handle_frame will always see valid rx_handler_data pointer.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Fixes: 3d249d4ca7 ("net: introduce ethernet teaming device")
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-23 15:30:28 -05:00
Roopa Prabhu a16a8ee7f6 team: handle NETIF_F_HW_SWITCH_OFFLOAD flag and add ndo_bridge_setlink/dellink handlers
Currently ndo_bridge_setlink and ndo_bridge_dellink handlers point
to the default switchdev handlers

This follows my bonding driver changes.

I have only compile tested this patch. However similar
bonding code has been tested.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-01 23:16:34 -08:00
David S. Miller 3f3558bb51 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/xen-netfront.c

Minor overlapping changes in xen-netfront.c, mostly to do
with some buffer management changes alongside the split
of stats into TX and RX.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-15 00:53:17 -05:00
Jiri Pirko b0d11b4278 team: avoid possible underflow of count_pending value for notify_peers and mcast_rejoin
This patch is fixing a race condition that may cause setting
count_pending to -1, which results in unwanted big bulk of arp messages
(in case of "notify peers").

Consider following scenario:

count_pending == 2
   CPU0                                           CPU1
					team_notify_peers_work
					  atomic_dec_and_test (dec count_pending to 1)
					  schedule_delayed_work
 team_notify_peers
   atomic_add (adding 1 to count_pending)
					team_notify_peers_work
					  atomic_dec_and_test (dec count_pending to 1)
					  schedule_delayed_work
					team_notify_peers_work
					  atomic_dec_and_test (dec count_pending to 0)
   schedule_delayed_work
					team_notify_peers_work
					  atomic_dec_and_test (dec count_pending to -1)

Fix this race by using atomic_dec_if_positive - that will prevent
count_pending running under 0.

Fixes: fc423ff00d ("team: add peer notification")
Fixes: 492b200efd  ("team: add support for sending multicast rejoins")
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-14 16:53:57 -05:00
Kenneth Williams e350a96ec9 team: Remove dead code
The deleted lines are called from a function which is called:
1) Only through __team_options_register via team_options_register and
2) Only during initialization / mode initialization when there are no
ports attached.
Therefore the ports list is guarenteed to be empty and this code will
never be executed.

Signed-off-by: Kenneth Williams <ken@williamsclan.us>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-12 17:02:04 -05:00
Michal Kubeček fbe168ba91 net: generic dev_disable_lro() stacked device handling
Large receive offloading is known to cause problems if received packets
are passed to other host. Therefore the kernel disables it by calling
dev_disable_lro() whenever a network device is enslaved in a bridge or
forwarding is enabled for it (or globally). For virtual devices we need
to disable LRO on the underlying physical device (which is actually
receiving the packets).

Current dev_disable_lro() code handles this  propagation for a vlan
(including 802.1ad nested vlan), macvlan or a vlan on top of a macvlan.
It doesn't handle other stacked devices and their combinations, in
particular propagation from a bond to its slaves which often causes
problems in virtualization setups.

As we now have generic data structures describing the upper-lower device
relationship, dev_disable_lro() can be generalized to disable LRO also
for all lower devices (if any) once it is disabled for the device
itself.

For bonding and teaming devices, it is necessary to disable LRO not only
on current slaves at the moment when dev_disable_lro() is called but
also on any slave (port) added later.

v2: use lower device links for all devices (including vlan and macvlan)

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Acked-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-13 14:48:56 -05:00
David S. Miller 64b1f00a08 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-10-08 16:22:22 -04:00
Eric Dumazet 0287587884 net: better IFF_XMIT_DST_RELEASE support
Testing xmit_more support with netperf and connected UDP sockets,
I found strange dst refcount false sharing.

Current handling of IFF_XMIT_DST_RELEASE is not optimal.

Dropping dst in validate_xmit_skb() is certainly too late in case
packet was queued by cpu X but dequeued by cpu Y

The logical point to take care of drop/force is in __dev_queue_xmit()
before even taking qdisc lock.

As Julian Anastasov pointed out, need for skb_dst() might come from some
packet schedulers or classifiers.

This patch adds new helper to cleanly express needs of various drivers
or qdiscs/classifiers.

Drivers that need skb_dst() in their ndo_start_xmit() should call
following helper in their setup instead of the prior :

	dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
->
	netif_keep_dst(dev);

Instead of using a single bit, we use two bits, one being
eventually rebuilt in bonding/team drivers.

The other one, is permanent and blocks IFF_XMIT_DST_RELEASE being
rebuilt in bonding/team. Eventually, we could add something
smarter later.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-07 13:22:11 -04:00
Joe Lawrence 47549650ab team: avoid race condition in scheduling delayed work
When team_notify_peers and team_mcast_rejoin are called, they both reset
their respective .count_pending atomic variable. Then when the actual
worker function is executed, the variable is atomically decremented.
This pattern introduces a potential race condition where the
.count_pending rolls over and the worker function keeps rescheduling
until .count_pending decrements to zero again:

THREAD 1                           THREAD 2

========                           ========
team_notify_peers(teamX)
  atomic_set count_pending = 1
  schedule_delayed_work
                                   team_notify_peers(teamX)
                                   atomic_set count_pending = 1
team_notify_peers_work
  atomic_dec_and_test
    count_pending = 0
  (return)
                                   schedule_delayed_work
                                   team_notify_peers_work
                                   atomic_dec_and_test
                                     count_pending = -1
                                   schedule_delayed_work
                                   (repeat until count_pending = 0)

Instead of assigning a new value to .count_pending, use atomic_add to
tack-on the additional desired worker function invocations.

Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Fixes: fc423ff00d ("team: add peer notification")
Fixes: 492b200efd ("team: add support for sending multicast rejoins")
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-04 20:50:50 -04:00
Jiri Pirko d7d3c05135 team: set IFF_TEAM_PORT priv_flag after rx_handler is registered
When one tries to add eth as a port into team and that eth is already in
use by other rx_handler device (macvlan, bond, bridge, ...) a bug in
team_port_add() causes that IFF_TEAM_PORT flag is set before rx_handler
is registered. In between, netdev nofifier is called and
team_device_event() sees IFF_TEAM_PORT and thinks that rx_handler_data
pointer is set to team_port. But it isn't.

Fix this by reordering rx_handler register and IFF_TEAM_PORT priv flag
set so it is very similar to how bonding does this.

Reported-by: Erik Hugne <erik.hugne@ericsson.com>
Fixes: 3d249d4ca7 "net: introduce ethernet teaming device"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-25 17:35:44 -07:00
Toshiaki Makita ff204cce75 team: Simplify return path of team_newlink
The variable "err" is not necessary.
Return register_netdevice() directly.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-05 16:37:51 -07:00
Alexei Starovoitov 7ae457c1e5 net: filter: split 'struct sk_filter' into socket and bpf parts
clean up names related to socket filtering and bpf in the following way:
- everything that deals with sockets keeps 'sk_*' prefix
- everything that is pure BPF is changed to 'bpf_*' prefix

split 'struct sk_filter' into
struct sk_filter {
	atomic_t        refcnt;
	struct rcu_head rcu;
	struct bpf_prog *prog;
};
and
struct bpf_prog {
        u32                     jited:1,
                                len:31;
        struct sock_fprog_kern  *orig_prog;
        unsigned int            (*bpf_func)(const struct sk_buff *skb,
                                            const struct bpf_insn *filter);
        union {
                struct sock_filter      insns[0];
                struct bpf_insn         insnsi[0];
                struct work_struct      work;
        };
};
so that 'struct bpf_prog' can be used independent of sockets and cleans up
'unattached' bpf use cases

split SK_RUN_FILTER macro into:
    SK_RUN_FILTER to be used with 'struct sk_filter *' and
    BPF_PROG_RUN to be used with 'struct bpf_prog *'

__sk_filter_release(struct sk_filter *) gains
__bpf_prog_release(struct bpf_prog *) helper function

also perform related renames for the functions that work
with 'struct bpf_prog *', since they're on the same lines:

sk_filter_size -> bpf_prog_size
sk_filter_select_runtime -> bpf_prog_select_runtime
sk_filter_free -> bpf_prog_free
sk_unattached_filter_create -> bpf_prog_create
sk_unattached_filter_destroy -> bpf_prog_destroy
sk_store_orig_filter -> bpf_prog_store_orig_filter
sk_release_orig_filter -> bpf_release_orig_filter
__sk_migrate_filter -> bpf_migrate_filter
__sk_prepare_filter -> bpf_prepare_filter

API for attaching classic BPF to a socket stays the same:
sk_attach_filter(prog, struct sock *)/sk_detach_filter(struct sock *)
and SK_RUN_FILTER(struct sk_filter *, ctx) to execute a program
which is used by sockets, tun, af_packet

API for 'unattached' BPF programs becomes:
bpf_prog_create(struct bpf_prog **)/bpf_prog_destroy(struct bpf_prog *)
and BPF_PROG_RUN(struct bpf_prog *, ctx) to execute a program
which is used by isdn, ppp, team, seccomp, ptp, xt_bpf, cls_bpf, test_bpf

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-02 15:03:58 -07:00
Daniel Borkmann 2b391ee2ca team: fix releasing uninitialized pointer to BPF prog
Commit 34c5bd66e5 introduced the possibility that an
uninitialized pointer on the stack (orig_fp) can call into
sk_unattached_filter_destroy() when its value is non NULL.

Before that commit orig_fp was only destroyed in the same
block where it was assigned a valid BPF prog before. Fix it
up by initializing it to NULL.

Fixes: 34c5bd66e5 ("net: filter: don't release unattached filter through call_rcu()")
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Pablo Neira <pablo@netfilter.org>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-31 13:10:02 -07:00
Pablo Neira 34c5bd66e5 net: filter: don't release unattached filter through call_rcu()
sk_unattached_filter_destroy() does not always need to release the
filter object via rcu. Since this filter is never attached to the
socket, the caller should be responsible for releasing the filter
in a safe way, which may not necessarily imply rcu.

This is a short summary of clients of this function:

1) xt_bpf.c and cls_bpf.c use the bpf matchers from rules, these rules
   are removed from the packet path before the filter is released. Thus,
   the framework makes sure the filter is safely removed.

2) In the ppp driver, the ppp_lock ensures serialization between the
   xmit and filter attachment/detachment path. This doesn't use rcu
   so deferred release via rcu makes no sense.

3) In the isdn/ppp driver, it is called from isdn_ppp_release()
   the isdn_ppp_ioctl(). This driver uses mutex and spinlocks, no rcu.
   Thus, deferred rcu makes no sense to me either, the deferred releases
   may be just masking the effects of wrong locking strategy, which
   should be fixed in the driver itself.

4) In the team driver, this is the only place where the rcu
   synchronization with unattached filter is used. Therefore, this
   patch introduces synchronize_rcu() which is called from the
   genetlink path to make sure the filter doesn't go away while packets
   are still walking over it. I think we can revisit this once struct
   bpf_prog (that only wraps specific bpf code bits) is in place, then
   add some specific struct rcu_head in the scope of the team driver if
   Jiri thinks this is needed.

Deferred rcu release for unattached filters was originally introduced
in 302d663 ("filter: Allow to create sk-unattached filters").

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-30 19:56:27 -07:00
David S. Miller c99f7abf0e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	include/net/inetpeer.h
	net/ipv6/output_core.c

Changes in net were fixing bugs in code removed in net-next.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-03 23:32:12 -07:00
Jiri Pirko 9d0d68faea team: fix mtu setting
Now it is not possible to set mtu to team device which has a port
enslaved to it. The reason is that when team_change_mtu() calls
dev_set_mtu() for port device, notificator for NETDEV_PRECHANGEMTU
event is called and team_device_event() returns NOTIFY_BAD forbidding
the change. So fix this by returning NOTIFY_DONE here in case team is
changing mtu in team_change_mtu().

Introduced-by: 3d249d4c "net: introduce ethernet teaming device"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-02 14:56:01 -07:00
Daniel Borkmann ea5930f4e1 team: lb: use sizeof(*fprog) in __fprog_create
sock_fprog and sock_fprog_kern are of equal size, however
it's cleaner to just use sizeof(*fprog) instead to always
have correct type.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-24 17:06:38 -04:00
Daniel Borkmann b1fcd35cf5 net: filter: let unattached filters use sock_fprog_kern
The sk_unattached_filter_create() API is used by BPF filters that
are not directly attached or related to sockets, and are used in
team, ptp, xt_bpf, cls_bpf, etc. As such all users do their own
internal managment of obtaining filter blocks and thus already
have them in kernel memory and set up before calling into
sk_unattached_filter_create(). As a result, due to __user annotation
in sock_fprog, sparse triggers false positives (incorrect type in
assignment [different address space]) when filters are set up before
passing them to sk_unattached_filter_create(). Therefore, let
sk_unattached_filter_create() API use sock_fprog_kern to overcome
this issue.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-23 16:48:05 -04:00
Michal Kubeček 3625920b62 teaming: fix vlan_features computing
__team_compute_features() uses netdev_increment_features() to
combine vlan_features of slaves into vlan_features of the team.
As netdev_increment_features() only adds most features and we
start with TEAM_VLAN_FEATURES, we can end up with features none
of the slaves provided.

Initialize vlan_features only with the flags which are both in
TEAM_VLAN_FEATURES and NETIF_F_ALL_FOR_ALL. Right now there is
no such feature so that we actually initialize vlan_features
with zero but stating it explicitely will make the code more
future proof.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-22 15:07:23 -04:00
Jiri Pirko ed2da03c69 team: forbid incorrect fall-through in notifier
There are two breaks missing there. The result is that userspace
receives multiple messages which might be confusing.

Introduced-by: 3d249d4c "net: introduce ethernet teaming device"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-04-24 13:26:32 -04:00
Eric W. Biederman a8779ec1c5 netpoll: Remove gfp parameter from __netpoll_setup
The gfp parameter was added in:
commit 47be03a28c
Author: Amerigo Wang <amwang@redhat.com>
Date:   Fri Aug 10 01:24:37 2012 +0000

    netpoll: use GFP_ATOMIC in slave_enable_netpoll() and __netpoll_setup()

    slave_enable_netpoll() and __netpoll_setup() may be called
    with read_lock() held, so should use GFP_ATOMIC to allocate
    memory. Eric suggested to pass gfp flags to __netpoll_setup().

    Cc: Eric Dumazet <eric.dumazet@gmail.com>
    Cc: "David S. Miller" <davem@davemloft.net>
    Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
    Signed-off-by: Eric Dumazet <edumazet@google.com>
    Signed-off-by: Cong Wang <amwang@redhat.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>

The reason for the gfp parameter was removed in:
commit c4cdef9b71
Author: dingtianhong <dingtianhong@huawei.com>
Date:   Tue Jul 23 15:25:27 2013 +0800

    bonding: don't call slave_xxx_netpoll under spinlocks

    The slave_xxx_netpoll will call synchronize_rcu_bh(),
    so the function may schedule and sleep, it should't be
    called under spinlocks.

    bond_netpoll_setup() and bond_netpoll_cleanup() are always
    protected by rtnl lock, it is no need to take the read lock,
    as the slave list couldn't be changed outside rtnl lock.

    Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
    Cc: Jay Vosburgh <fubar@us.ibm.com>
    Cc: Andy Gospodarek <andy@greyhouse.net>
    Signed-off-by: David S. Miller <davem@davemloft.net>

Nothing else that calls __netpoll_setup or ndo_netpoll_setup
requires a gfp paramter, so remove the gfp parameter from both
of these functions making the code clearer.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-29 17:58:37 -04:00
Eric W. Biederman 57a7744e09 net: Replace u64_stats_fetch_begin_bh to u64_stats_fetch_begin_irq
Replace the bh safe variant with the hard irq safe variant.

We need a hard irq safe variant to deal with netpoll transmitting
packets from hard irq context, and we need it in most if not all of
the places using the bh safe variant.

Except on 32bit uni-processor the code is exactly the same so don't
bother with a bh variant, just have a hard irq safe variant that
everyone can use.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-14 22:41:36 -04:00
David S. Miller 1e8d6421cf Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/bonding/bond_3ad.h
	drivers/net/bonding/bond_main.c

Two minor conflicts in bonding, both of which were overlapping
changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-19 01:24:22 -05:00
Daniel Borkmann 99932d4fc0 netdevice: add queue selection fallback handler for ndo_select_queue
Add a new argument for ndo_select_queue() callback that passes a
fallback handler. This gets invoked through netdev_pick_tx();
fallback handler is currently __netdev_pick_tx() as most drivers
invoke this function within their customized implementation in
case for skbs that don't need any special handling. This fallback
handler can then be replaced on other call-sites with different
queue selection methods (e.g. in packet sockets, pktgen etc).

This also has the nice side-effect that __netdev_pick_tx() is
then only invoked from netdev_pick_tx() and export of that
function to modules can be undone.

Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-17 00:36:34 -05:00
WANG Cong 1c213bd24a net: introduce netdev_alloc_pcpu_stats() for drivers
There are many drivers calling alloc_percpu() to allocate pcpu stats
and then initializing ->syncp. So just introduce a helper function for them.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-14 15:49:55 -05:00
Weilong Chen 99301ba11c team: Don't allow team devices to change network namespaces.
Like bonding, team as netdevice doesn't cross netns boundaries.

Team ports and team itself live in same netns.

Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-22 21:57:17 -08:00
Daniel Borkmann f337db64af random32: add prandom_u32_max and convert open coded users
Many functions have open coded a function that returns a random
number in range [0,N-1]. Under the assumption that we have a PRNG
such as taus113 with being well distributed in [0, ~0U] space,
we can implement such a function as uword t = (n*m')>>32, where
m' is a random number obtained from PRNG, n the right open interval
border and t our resulting random number, with n,m',t in u32 universe.

Lets go with Joe and simply call it prandom_u32_max(), although
technically we have an right open interval endpoint, but that we
have documented. Other users can further be migrated to the new
prandom_u32_max() function later on; for now, we need to make sure
to migrate reciprocal_divide() users for the reciprocal_divide()
follow-up fixup since their function signatures are going to change.

Joint work with Hannes Frederic Sowa.

Cc: Jakub Zawadzki <darkjames-ws@darkjames.pl>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21 23:17:20 -08:00
Veaceslav Falico b01f236c66 team: block mtu change before it happens via NETDEV_PRECHANGEMTU
Now it catches the NETDEV_CHANGEMTU notification, which is signaled after
the actual change happened on the device, and returns NOTIFY_BAD, so that
the change on the device is reverted.

This might be quite costly and messy, so use the new NETDEV_PRECHANGEMTU to
catch the MTU change before the actual change happens and signal that it's
forbidden to do it.

CC: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-16 17:15:42 -08:00
Jason Wang f663dd9aaf net: core: explicitly select a txq before doing l2 forwarding
Currently, the tx queue were selected implicitly in ndo_dfwd_start_xmit(). The
will cause several issues:

- NETIF_F_LLTX were removed for macvlan, so txq lock were done for macvlan
  instead of lower device which misses the necessary txq synchronization for
  lower device such as txq stopping or frozen required by dev watchdog or
  control path.
- dev_hard_start_xmit() was called with NULL txq which bypasses the net device
  watchdog.
- dev_hard_start_xmit() does not check txq everywhere which will lead a crash
  when tso is disabled for lower device.

Fix this by explicitly introducing a new param for .ndo_select_queue() for just
selecting queues in the case of l2 forwarding offload. netdev_pick_tx() was also
extended to accept this parameter and dev_queue_xmit_accel() was used to do l2
forwarding transmission.

With this fixes, NETIF_F_LLTX could be preserved for macvlan and there's no need
to check txq against NULL in dev_hard_start_xmit(). Also there's no need to keep
a dedicated ndo_dfwd_start_xmit() and we can just reuse the code of
dev_queue_xmit() to do the transmission.

In the future, it was also required for macvtap l2 forwarding support since it
provides a necessary synchronization method.

Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: e1000-devel@lists.sourceforge.net
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-10 13:23:08 -05:00
Jiri Pirko f5e0d34382 team: fix master carrier set when user linkup is enabled
When user linkup is enabled and user sets linkup of individual port,
we need to recompute linkup (carrier) of master interface so the change
is reflected. Fix this by calling __team_carrier_check() which does the
needed work.

Please apply to all stable kernels as well. Thanks.

Reported-by: Jan Tluka <jtluka@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-29 16:34:33 -05:00
Linus Torvalds 1ee2dcc224 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "Mostly these are fixes for fallout due to merge window changes, as
  well as cures for problems that have been with us for a much longer
  period of time"

 1) Johannes Berg noticed two major deficiencies in our genetlink
    registration.  Some genetlink protocols we passing in constant
    counts for their ops array rather than something like
    ARRAY_SIZE(ops) or similar.  Also, some genetlink protocols were
    using fixed IDs for their multicast groups.

    We have to retain these fixed IDs to keep existing userland tools
    working, but reserve them so that other multicast groups used by
    other protocols can not possibly conflict.

    In dealing with these two problems, we actually now use less state
    management for genetlink operations and multicast groups.

 2) When configuring interface hardware timestamping, fix several
    drivers that simply do not validate that the hwtstamp_config value
    is one the driver actually supports.  From Ben Hutchings.

 3) Invalid memory references in mwifiex driver, from Amitkumar Karwar.

 4) In dev_forward_skb(), set the skb->protocol in the right order
    relative to skb_scrub_packet().  From Alexei Starovoitov.

 5) Bridge erroneously fails to use the proper wrapper functions to make
    calls to netdev_ops->ndo_vlan_rx_{add,kill}_vid.  Fix from Toshiaki
    Makita.

 6) When detaching a bridge port, make sure to flush all VLAN IDs to
    prevent them from leaking, also from Toshiaki Makita.

 7) Put in a compromise for TCP Small Queues so that deep queued devices
    that delay TX reclaim non-trivially don't have such a performance
    decrease.  One particularly problematic area is 802.11 AMPDU in
    wireless.  From Eric Dumazet.

 8) Fix crashes in tcp_fastopen_cache_get(), we can see NULL socket dsts
    here.  Fix from Eric Dumzaet, reported by Dave Jones.

 9) Fix use after free in ipv6 SIT driver, from Willem de Bruijn.

10) When computing mergeable buffer sizes, virtio-net fails to take the
    virtio-net header into account.  From Michael Dalton.

11) Fix seqlock deadlock in ip4_datagram_connect() wrt.  statistic
    bumping, this one has been with us for a while.  From Eric Dumazet.

12) Fix NULL deref in the new TIPC fragmentation handling, from Erik
    Hugne.

13) 6lowpan bit used for traffic classification was wrong, from Jukka
    Rissanen.

14) macvlan has the same issue as normal vlans did wrt.  propagating LRO
    disabling down to the real device, fix it the same way.  From Michal
    Kubecek.

15) CPSW driver needs to soft reset all slaves during suspend, from
    Daniel Mack.

16) Fix small frame pacing in FQ packet scheduler, from Eric Dumazet.

17) The xen-netfront RX buffer refill timer isn't properly scheduled on
    partial RX allocation success, from Ma JieYue.

18) When ipv6 ping protocol support was added, the AF_INET6 protocol
    initialization cleanup path on failure was borked a little.  Fix
    from Vlad Yasevich.

19) If a socket disconnects during a read/recvmsg/recvfrom/etc that
    blocks we can do the wrong thing with the msg_name we write back to
    userspace.  From Hannes Frederic Sowa.  There is another fix in the
    works from Hannes which will prevent future problems of this nature.

20) Fix route leak in VTI tunnel transmit, from Fan Du.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (106 commits)
  genetlink: make multicast groups const, prevent abuse
  genetlink: pass family to functions using groups
  genetlink: add and use genl_set_err()
  genetlink: remove family pointer from genl_multicast_group
  genetlink: remove genl_unregister_mc_group()
  hsr: don't call genl_unregister_mc_group()
  quota/genetlink: use proper genetlink multicast APIs
  drop_monitor/genetlink: use proper genetlink multicast APIs
  genetlink: only pass array to genl_register_family_with_ops()
  tcp: don't update snd_nxt, when a socket is switched from repair mode
  atm: idt77252: fix dev refcnt leak
  xfrm: Release dst if this dst is improper for vti tunnel
  netlink: fix documentation typo in netlink_set_err()
  be2net: Delete secondary unicast MAC addresses during be_close
  be2net: Fix unconditional enabling of Rx interface options
  net, virtio_net: replace the magic value
  ping: prevent NULL pointer dereference on write to msg_name
  bnx2x: Prevent "timeout waiting for state X"
  bnx2x: prevent CFC attention
  bnx2x: Prevent panic during DMAE timeout
  ...
2013-11-19 15:50:47 -08:00
Johannes Berg 2a94fe48f3 genetlink: make multicast groups const, prevent abuse
Register generic netlink multicast groups as an array with
the family and give them contiguous group IDs. Then instead
of passing the global group ID to the various functions that
send messages, pass the ID relative to the family - for most
families that's just 0 because the only have one group.

This avoids the list_head and ID in each group, adding a new
field for the mcast group ID offset to the family.

At the same time, this allows us to prevent abusing groups
again like the quota and dropmon code did, since we can now
check that a family only uses a group it owns.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-19 16:39:06 -05:00
Johannes Berg 68eb55031d genetlink: pass family to functions using groups
This doesn't really change anything, but prepares for the
next patch that will change the APIs to pass the group ID
within the family, rather than the global group ID.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-19 16:39:06 -05:00
Johannes Berg c53ed74236 genetlink: only pass array to genl_register_family_with_ops()
As suggested by David Miller, make genl_register_family_with_ops()
a macro and pass only the array, evaluating ARRAY_SIZE() in the
macro, this is a little safer.

The openvswitch has some indirection, assing ops/n_ops directly in
that code. This might ultimately just assign the pointers in the
family initializations, saving the struct genl_family_and_ops and
code (once mcast groups are handled differently.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-19 16:39:05 -05:00
Johannes Berg 4534de8305 genetlink: make all genl_ops users const
Now that genl_ops are no longer modified in place when
registering, they can be made const. This patch was done
mostly with spatch:

@@
identifier ops;
@@
+const
 struct genl_ops ops[] = {
 ...
 };

(except the struct thing in net/openvswitch/datapath.c)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-14 17:10:41 -05:00
John Stultz 827da44c61 net: Explicitly initialize u64_stats_sync structures for lockdep
In order to enable lockdep on seqcount/seqlock structures, we
must explicitly initialize any locks.

The u64_stats_sync structure, uses a seqcount, and thus we need
to introduce a u64_stats_init() function and use it to initialize
the structure.

This unfortunately adds a lot of fairly trivial initialization code
to a number of drivers. But the benefit of ensuring correctness makes
this worth while.

Because these changes are required for lockdep to be enabled, and the
changes are quite trivial, I've not yet split this patch out into 30-some
separate patches, as I figured it would be better to get the various
maintainers thoughts on how to best merge this change along with
the seqcount lockdep enablement.

Feedback would be appreciated!

Signed-off-by: John Stultz <john.stultz@linaro.org>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: James Morris <jmorris@namei.org>
Cc: Jesse Gross <jesse@nicira.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Mirko Lindner <mlindner@marvell.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Roger Luethi <rl@hellgate.ch>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Simon Horman <horms@verge.net.au>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Wensong Zhang <wensong@linux-vs.org>
Cc: netdev@vger.kernel.org
Link: http://lkml.kernel.org/r/1381186321-4906-2-git-send-email-john.stultz@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-06 12:40:25 +01:00
Bjørn Mork 93af735736 net: team: inherit addr_assign_type along with dev_addr
A device inheriting a random or set address should reflect this in
its addr_assign_type.

Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-03 20:57:49 -04:00
stephen hemminger 0fb52a27a0 team: cleanup netpoll clode
This started out with fixing a sparse warning, then I realized that
the wrapper function team_netpoll_info could just be collapsed away
by rolling it into the enable code.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-26 15:24:32 -07:00
Jiri Pirko 492b200efd team: add support for sending multicast rejoins
Similar to what is implemented in bonding. User is able to ask team
driver to send IGMP rejoins in case port is enabled or disabled. Using
previously introduced netdev notifier.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-23 16:52:47 -07:00
Jiri Pirko 4aa5dee4d9 net: convert resend IGMP to notifier event
Until now, bond_resend_igmp_join_requests() looks for vlans attached to
bonding device, bridge where bonding act as port manually. It does not
care of other scenarios, like stacked bonds or team device above. Make
this more generic and use netdev notifier to propagate the event to
upper devices and to actually call ip_mc_rejoin_groups().

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-23 16:52:47 -07:00
Jiri Pirko fc423ff00d team: add peer notification
When port is enabled or disabled, allow to notify peers by unsolicitated
NAs or gratuitous ARPs. Disabled by default.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-23 16:52:47 -07:00
David S. Miller d98cae64e4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/wireless/ath/ath9k/Kconfig
	drivers/net/xen-netback/netback.c
	net/batman-adv/bat_iv_ogm.c
	net/wireless/nl80211.c

The ath9k Kconfig conflict was a change of a Kconfig option name right
next to the deletion of another option.

The xen-netback conflict was overlapping changes involving the
handling of the notify list in xen_netbk_rx_action().

Batman conflict resolution provided by Antonio Quartulli, basically
keep everything in both conflict hunks.

The nl80211 conflict is a little more involved.  In 'net' we added a
dynamic memory allocation to nl80211_dump_wiphy() to fix a race that
Linus reported.  Meanwhile in 'net-next' the handlers were converted
to use pre and post doit handlers which use a flag to determine
whether to hold the RTNL mutex around the operation.

However, the dump handlers to not use this logic.  Instead they have
to explicitly do the locking.  There were apparent bugs in the
conversion of nl80211_dump_wiphy() in that we were not dropping the
RTNL mutex in all the return paths, and it seems we very much should
be doing so.  So I fixed that whilst handling the overlapping changes.

To simplify the initial returns, I take the RTNL mutex after we try
to allocate 'tb'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-19 16:49:39 -07:00
Jiri Pirko 735d381fa5 team: remove synchronize_rcu() called during port disable
Check the unlikely case of team->en_port_count == 0 before modulo
operation.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-12 03:06:16 -07:00
Jiri Pirko d80b35beac team: use kfree_rcu instead of synchronize_rcu in team_port_dev
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-12 03:05:54 -07:00
Jiri Pirko 6c31ff366c team: remove synchronize_rcu() called during queue override change
This patch removes synchronize_rcu() from function
__team_queue_override_port_del(). That can be done because it is ok to
do list_del_rcu() and list_add_tail_rcu() on the same list_head member
without calling synchronize_rcu() in between. A bit of refactoring
needed to be done because INIT_LIST_HEAD needed to be removed (to not
kill the forward pointer) as well.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-12 03:05:53 -07:00
Jiri Pirko 72df935d98 team: move add to port list before port enablement
team_port_enable() adds port to port_hashlist. Reader sees port
in team_get_port_by_index_rcu() and returns it, but
team_get_first_port_txable_rcu() tries to go through port_list, where the
port is not inserted yet -> NULL pointer dereference.
Fix this by reordering port_list and port_hashlist insertion.
Panic is easily triggeable when txing packets and adding/removing port
in a loop.

Introduced by commit 3d249d4c "net: introduce ethernet teaming device"

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-12 00:56:27 -07:00
Jiri Pirko 76c455decb team: check return value of team_get_port_by_index_rcu() for NULL
team_get_port_by_index_rcu() might return NULL due to race between port
removal and skb tx path. Panic is easily triggeable when txing packets
and adding/removing port in a loop.

introduced by commit 3d249d4ca "net: introduce ethernet teaming device"
and commit 753f993911 "team: introduce random mode" (for random mode)

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-12 00:56:27 -07:00
David S. Miller 6bc19fb82d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Merge 'net' bug fixes into 'net-next' as we have patches
that will build on top of them.

This merge commit includes a change from Emil Goode
(emilgoode@gmail.com) that fixes a warning that would
have been introduced by this merge.  Specifically it
fixes the pingv6_ops method ipv6_chk_addr() to add a
"const" to the "struct net_device *dev" argument and
likewise update the dummy_ipv6_chk_addr() declaration.

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-05 16:37:30 -07:00
Jiri Pirko 3f3e7ce4ff team: fix port list dump for big number of ports
In case the port list dump does not fit into one skb currently the
dump would start over again. Fix this by continue from the last dumped
port.

Introduced by commit d90f889e9c (team: handle sending port list in the
same way option list is sent)

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-31 17:31:52 -07:00
Jiri Pirko 351638e7de net: pass info struct via netdevice notifier
So far, only net_device * could be passed along with netdevice notifier
event. This patch provides a possibility to pass custom structure
able to provide info that event listener needs to know.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>

v2->v3: fix typo on simeth
	shortened dev_getter
	shortened notifier_info struct name
v1->v2: fix notifier_call parameter in call_netdevice_notifier()
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-28 13:11:01 -07:00
Akinobu Mita e00adf3913 drivers/net: rename random32() to prandom_u32()
Use preferable function name which implies using a pseudo-random number
generator.

[akpm@linux-foundation.org: convert team_mode_random.c]
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Thomas Sailer <t.sailer@alumni.ethz.ch>
Acked-by: Bing Zhao <bzhao@marvell.com> [mwifiex]
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Michael Chan <mchan@broadcom.com>
Cc: Thomas Sailer <t.sailer@alumni.ethz.ch>
Cc: Jean-Paul Roubelat <jpr@f6fbb.org>
Cc: Bing Zhao <bzhao@marvell.com>
Cc: Brett Rudley <brudley@broadcom.com>
Cc: Arend van Spriel <arend@broadcom.com>
Cc: "Franky (Zhenhui) Lin" <frankyl@broadcom.com>
Cc: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-07 18:38:27 -07:00
Patrick McHardy 80d5c3689b net: vlan: prepare for 802.1ad VLAN filtering offload
Change the rx_{add,kill}_vid callbacks to take a protocol argument in
preparation of 802.1ad support. The protocol argument used so far is
always htons(ETH_P_8021Q).

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-19 14:45:27 -04:00
Patrick McHardy f646968f8f net: vlan: rename NETIF_F_HW_VLAN_* feature flags to NETIF_F_HW_VLAN_CTAG_*
Rename the hardware VLAN acceleration features to include "CTAG" to indicate
that they only support CTAGs. Follow up patches will introduce 802.1ad
server provider tagging (STAGs) and require the distinction for hardware not
supporting acclerating both.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-19 14:45:26 -04:00
Vlad Yasevich 72b270323d team: Use new sync_multiple api to sync devices adressess.
Team drivers attempts to sync addresses to each of the port
devices; however, the current api doesn't really perform the sync
for any device after the first one.  Switch to using the new api
that will actually sync the addresses to all ports.

CC: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-15 16:10:47 -04:00
David S. Miller e5f2ef7ab4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/intel/e1000e/netdev.c

Minor conflict in e1000e, a line that got fixed in 'net'
has been removed in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-12 05:52:22 -04:00
stephen hemminger 2ea4659943 team: make local function static
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-09 16:09:18 -05:00
Vlad Yasevich ba81276b1a team: unsyc the devices addresses when port is removed
When a team port is removed, unsync all devices addresses that may have
been synched to the port devices.

CC: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-07 16:35:57 -05:00
Jiri Pirko 753f993911 team: introduce random mode
As suggested by Eric Dumazet, allow user to select mode which chooses
TX port randomly. Functionality should be more of less similar to
round-robin mode with even lower overhead.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-06 14:55:20 -05:00
Jiri Pirko acbba0d0f8 team: introduce two default team_modeop functions and use them in modes
No need to duplicate code for this.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-06 14:55:20 -05:00
Linus Torvalds 06991c28f3 Driver core patches for 3.9-rc1
Here is the big driver core merge for 3.9-rc1
 
 There are two major series here, both of which touch lots of drivers all
 over the kernel, and will cause you some merge conflicts:
   - add a new function called devm_ioremap_resource() to properly be
     able to check return values.
   - remove CONFIG_EXPERIMENTAL
 
 If you need me to provide a merged tree to handle these resolutions,
 please let me know.
 
 Other than those patches, there's not much here, some minor fixes and
 updates.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iEYEABECAAYFAlEmV0cACgkQMUfUDdst+yncCQCfbmnQZju7kzWXk6PjdFuKspT9
 weAAoMCzcAtEzzc4LXuUxxG/sXBVBCjW
 =yWAQ
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Merge tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg Kroah-Hartman:
 "Here is the big driver core merge for 3.9-rc1

  There are two major series here, both of which touch lots of drivers
  all over the kernel, and will cause you some merge conflicts:

   - add a new function called devm_ioremap_resource() to properly be
     able to check return values.

   - remove CONFIG_EXPERIMENTAL

  Other than those patches, there's not much here, some minor fixes and
  updates"

Fix up trivial conflicts

* tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits)
  base: memory: fix soft/hard_offline_page permissions
  drivercore: Fix ordering between deferred_probe and exiting initcalls
  backlight: fix class_find_device() arguments
  TTY: mark tty_get_device call with the proper const values
  driver-core: constify data for class_find_device()
  firmware: Ignore abort check when no user-helper is used
  firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
  firmware: Make user-mode helper optional
  firmware: Refactoring for splitting user-mode helper code
  Driver core: treat unregistered bus_types as having no devices
  watchdog: Convert to devm_ioremap_resource()
  thermal: Convert to devm_ioremap_resource()
  spi: Convert to devm_ioremap_resource()
  power: Convert to devm_ioremap_resource()
  mtd: Convert to devm_ioremap_resource()
  mmc: Convert to devm_ioremap_resource()
  mfd: Convert to devm_ioremap_resource()
  media: Convert to devm_ioremap_resource()
  iommu: Convert to devm_ioremap_resource()
  drm: Convert to devm_ioremap_resource()
  ...
2013-02-21 12:05:51 -08:00
Flavio Leitner e185483e6b team: allow userspace to take control over carrier
Some modes don't require any special carrier handling so
in these cases, the kernel can control the carrier as for
any other interface.  However, some other modes, e.g. lacp,
requires more than just that, so userspace needs to control
the carrier itself.

The daemon today is ready to control it, but the kernel
still can change it based on events.

This fix so that either kernel or userspace is controlling
the carrier.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-06 15:48:09 -05:00
Jiri Pirko 675b8044e1 team: ab: set active port option as changed when port is leaving
In case port is leaving the team, set the option "activeport" as changed
so the change can be properly propagated to userspace

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04 14:55:45 -05:00
Jiri Pirko c3969d80a3 team: move netlink event notifiers after team_port_leave()
In team_port_del(), there is need to be do all the cleanup related
things first and netlink event notifiers should be called after that.
This fixes two problems:
team carrier is now correctly set (port is removed from list first)
mode can set option as changed in .port_leave op

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04 14:55:45 -05:00
Jiri Pirko d90f889e9c team: handle sending port list in the same way option list is sent
Essentially do the same thing with port list as with option list.
Multipart netlink message.
Side effect is that port event message can send port which is not longer
in team->port_list.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04 14:55:45 -05:00
Kees Cook 513fe16a24 drivers/net/team: remove depends on CONFIG_EXPERIMENTAL
The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

CC: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Jiri Pirko <jpirko@redhat.com>
2013-01-11 11:38:41 -08:00
Flavio Leitner 3066af582f team: use strlcpy with ethtool_drvinfo fields
The fields must be null-terminated.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-06 21:12:25 -08:00
Jiri Pirko b1cc9850cd team: remove usage of netdev_set_master()
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-04 13:31:49 -08:00
Jiri Pirko 15c6ff3bc0 net: remove unnecessary NET_ADDR_RANDOM "bitclean"
NET_ADDR_SET is set in dev_set_mac_address() no need to alter
dev->addr_assign_type value in drivers.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-03 22:37:36 -08:00
Flavio Leitner 06a7fc429f team: update master carrier state
Update master's carrier state when there is any
change with its ports.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-03 02:15:14 -08:00
Flavio Leitner 7f51c58731 team: add ethtool support
This patch adds few ethtool operations to team driver.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-30 02:32:09 -08:00
Flavio Leitner 4cafe373d4 team: implement carrier change
The user space teamd daemon may need to control the
master's carrier state depending on the selected mode.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-30 02:31:58 -08:00
Jiri Pirko 3ed7147189 team: fix hw_features setup
Do this in the same way bonding does. This fixed setup resolves performance
issues when using some cards with certain offloading.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-28 11:39:22 -05:00
Jiri Pirko 403f43c937 team: bcast: convert return value of team_dev_queue_xmit() to bool correctly
The thing is that team_dev_queue_xmit() returns NET_XMIT_* or -E*.
bc_trasmit() should return true in case all went well. So use ! to get
correct retval from team_dev_queue_xmit() result.
This bug caused iface statistics to be badly computed.

This bug was introduced by:
team: add broadcast mode (5fc889911a)

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-21 11:55:07 -05:00
Eric Dumazet b3c581d5d7 team: set qdisc_tx_busylock to avoid LOCKDEP splat
If a qdisc is installed on a team device, its possible to get
a lockdep splat under stress, because nested dev_queue_xmit() can
lock busylock a second time (on a different device, so its a false
positive)

Avoid this problem using a distinct lock_class_key for team
devices.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jiri Pirko <jpirko@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-04 15:53:48 -04:00
David S. Miller 6a06e5e1bb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/team/team.c
	drivers/net/usb/qmi_wwan.c
	net/batman-adv/bat_iv_ogm.c
	net/ipv4/fib_frontend.c
	net/ipv4/route.c
	net/l2tp/l2tp_netlink.c

The team, fib_frontend, route, and l2tp_netlink conflicts were simply
overlapping changes.

qmi_wwan and bat_iv_ogm were of the "use HEAD" variety.

With help from Antonio Quartulli.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-28 14:40:49 -04:00
Wei Yongjun a326e6dd31 team: fix return value check
In case of error, the function genlmsg_put() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-27 13:18:19 -04:00
Jiri Pirko 0b121fd28d team: send port changed when added
On some hw, link is not up during adding iface to team. That causes event
not being sent to userspace and that may cause confusion.
Fix this bug by sending port changed event once it's added to team.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-22 15:46:12 -04:00
Jiri Pirko 10f3f51d56 team: send port changed when added
On some hw, link is not up during adding iface to team. That causes event
not being sent to userspace and that may cause confusion.
Fix this bug by sending port changed event once it's added to team.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-21 15:01:21 -04:00
Eric W. Biederman 15e473046c netlink: Rename pid to portid to avoid confusion
It is a frequent mistake to confuse the netlink port identifier with a
process identifier.  Try to reduce this confusion by renaming fields
that hold port identifiers portid instead of pid.

I have carefully avoided changing the structures exported to
userspace to avoid changing the userspace API.

I have successfully built an allyesconfig kernel with this change.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-10 15:30:41 -04:00
Jiri Pirko 2c33bb37cb team: do not allow to add VLAN challenged port when vlan is used
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 13:46:40 -04:00
Jiri Pirko 0c7517e9fa team: don't print warn message on -ESRCH during event send
When no one is listening on NL socket, -ESRCH is returned and warning
message is printed. This message is confusing people and in fact has no
meaning. So do not print it in this case.

Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 13:46:39 -04:00
David S. Miller 1304a7343b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-08-22 14:21:38 -07:00
Jiri Pirko 1d76efe157 team: add support for non-ethernet devices
This is resolved by two things:
1) allow dev_addr of different length than ETH_ALEN
2) during port add, check for dev->type and change it if necessary

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-20 02:40:48 -07:00
Amerigo Wang 47be03a28c netpoll: use GFP_ATOMIC in slave_enable_netpoll() and __netpoll_setup()
slave_enable_netpoll() and __netpoll_setup() may be called
with read_lock() held, so should use GFP_ATOMIC to allocate
memory. Eric suggested to pass gfp flags to __netpoll_setup().

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-14 14:33:30 -07:00
Jiri Pirko 8ff5105a2b team: add support for queue override by setting queue_id for port
Similar to what bonding has. This allows to set queue_id for port so
this port will be used when skb with matching skb->queue_mapping is
going to be transmitted.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-03 20:40:12 -07:00
Jiri Pirko a86fc6b7d6 team: add per port priority option
Allow userspace to set port priority.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-03 20:40:12 -07:00
Jiri Pirko 69821638b2 team: add signed 32-bit team option type
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-03 20:40:11 -07:00
Jiri Pirko 3324d024ba team: init error value to 0 in team_netpoll_setup()
This will ensure correct value is returned in case the port list is empty.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-24 13:54:15 -07:00
Jiri Pirko 6c85f2bdda team: add multiqueue support
Largely copied from bonding code.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-20 11:07:00 -07:00
Jiri Pirko dc9059512c team: refine IFF_XMIT_DST_RELEASE capability
Cloned patch of Eric Dumazet for bonding.

Some workloads greatly benefit of IFF_XMIT_DST_RELEASE capability
on output net device, avoiding dirtying dst refcount.

team currently disables IFF_XMIT_DST_RELEASE unconditionally.

If all ports have the IFF_XMIT_DST_RELEASE bit set, then
team dev can also have it in its priv_flags.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-18 11:28:46 -07:00
Jiri Pirko bd2d0837ab team: add netpoll support
It's done in very similar way this is done in bonding and bridge.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-17 09:02:36 -07:00
Jiri Pirko 68c450426a team: make team_port_enabled() and team_port_txable() static inline
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12 08:08:20 -07:00
Jiri Pirko 5fc889911a team: add broadcast mode
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12 08:08:20 -07:00
Jiri Pirko 6e88e1357c team: use function team_port_txable() for determing enabled and up port
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12 08:08:20 -07:00
Jiri Pirko 5a1d1c8c78 team: use IFF_LIVE_ADDR_CHANGE priv_flag
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-30 01:08:00 -07:00
Thomas Graf 58050fce35 net: Use NLMSG_DEFAULT_SIZE in combination with nlmsg_new()
Using NLMSG_GOODSIZE results in multiple pages being used as
nlmsg_new() will automatically add the size of the netlink
header to the payload thus exceeding the page limit.

NLMSG_DEFAULT_SIZE takes this into account.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Cc: Jiri Pirko <jpirko@redhat.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Sergey Lapin <slapin@ossfans.org>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org>
Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Reviewed-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-28 17:56:43 -07:00
Jiri Pirko 52a4fd7780 team: do not allow to map disabled ports
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-26 21:09:39 -07:00
Jiri Pirko 122bb046bc team: fix team_adjust_ops with regard to enabled ports
team_adjust_ops should check for enabled ports, not all ports.
This may lead to division by zero. This patch fixes this.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-26 21:09:39 -07:00
Jiri Pirko 6dab015cf8 team: do RCU update path fixups
Use rcu_access_pointer and rcu_dereference_protected
to access RCU pointer by updater.
Use RCU_INIT_POINTER for NULL assignment of RCU pointer.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-20 14:29:12 -07:00
David S. Miller f643776e4d team: Revert previous two changes.
I didn't notice that these were superceded by a more uptodate
version of the changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-20 14:28:58 -07:00
Jiri Pirko d8dbd96e50 team: use RCU_INIT_POINTER for NULL assignment of RCU pointer
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-20 14:04:10 -07:00
Jiri Pirko b443a2307d team: use rcu_access_pointer to access RCU pointer by writer
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-20 14:04:10 -07:00
Jiri Pirko d1904fbd88 team: use rcu_dereference_bh() in tx path
Should be used instead of rcu_dereference, since rcu_read_lock_bh is
held.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:24 -07:00
Jiri Pirko 2fcdb2c9e6 team: allow to send multiple set events in one message
When multiple sets are done, event message is generated for each. This
patch accumulates these messages into one.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:24 -07:00
Jiri Pirko 35b384bd14 team: ensure correct order of netlink messages delivery
currently, when port is created and per-port options are present, there
options are sent to userspace with ifindex of port which userspace does
not know about. Port add message goes right after.

This patch corrects message ordering so userspace would not be confused.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:24 -07:00
Jiri Pirko 9b00cf2d10 team: implement multipart netlink messages for options transfers
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:24 -07:00
Jiri Pirko ab8250d700 team: lb: introduce infrastructure for userspace driven tx loadbalancing
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:24 -07:00
Jiri Pirko 4bccfd17e1 team: add port_[enabled/disabled] mode callbacks
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:24 -07:00
Jiri Pirko f88725ffb0 team: pass NULL to __team_option_inst_add() instead of 0
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:24 -07:00
Jiri Pirko 01048d9a29 team: allow to specify one option instance to be send to userspace
No need to walk through option instance list and look for ->changed ==
true when called knows exactly what one option instance changed.

Also use lists to pass option instances needed to be present in netlink
message.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:23 -07:00
Jiri Pirko 3221c64603 team: fix error path in team_nl_fill_port_list_get()
genlmsg_cancel() needs to be called in case nest fails

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:23 -07:00
Jiri Pirko 75db986a6b team: fix error path in team_nl_fill_options_get()
genlmsg_cancel() needs to be called in case nest fails

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:23 -07:00
Jiri Pirko 0f1aad2b7f team: allow async option changes
This patch adds two exported functions. One allows to mark option
instance as changed and the second processes change check and does
transfer of changed options to userspace.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:23 -07:00
Jiri Pirko 85d59a8724 team: push array_index and port into separate structure
Introduce struct team_option_inst_info and push option instance info
there. It can be then easily passed to gsetter context and used for
feature async option changes.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:23 -07:00
Jiri Pirko 0d572e45f7 team: comments: s/net\/drivers\/team/drivers\/net\/team/
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:23 -07:00
Jiri Pirko b13033262d team: introduce array options
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:23 -07:00
Jiri Pirko f82b959d26 team: allow read/write-only options
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:23 -07:00
Jiri Pirko 596e2024c4 team: lb: push hash counting into separate function
Also squash hash into one byte

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:23 -07:00
Jiri Pirko 5149ee5838 team: add mode priv to port
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:22 -07:00
Jiri Pirko d299cd5116 team: for nomode use dummy struct team_mode
That leaves team->mode and all its values valid so no checks would be
needed (for example in team_mode_option_get()).

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:22 -07:00
Jiri Pirko 0402788a6c team: make team_mode struct const
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 15:00:22 -07:00
Jiri Pirko acd6996234 team: add per-port option for enabling/disabling ports
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-21 16:26:33 -04:00
Jiri Pirko 19a0b58e50 team: allow to enable/disable ports
This patch changes content of hashlist (used to get port struct by
computed index (0...en_port_count-1)). Now the hash list contains only
enabled ports so userspace will be able to say what ports can be used
for tx/rx. This becomes handy when userspace will need to disable ports
which does not belong to active aggregator. By default, newly added port
is enabled.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-21 16:26:33 -04:00
Jiri Pirko 4c78bb845b team: lb: let userspace care about port macs
Better to leave this for userspace

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-21 16:26:33 -04:00
Jiri Pirko cade455596 team: add missed "statics"
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-11 10:03:52 -04:00
Jiri Pirko 679b160730 team: ab: walk through port list non-rcu
Since team->lock is being held, _rcu variant make no sense.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-11 10:03:52 -04:00
Jiri Pirko 71472ec12c team: add user_linkup and user_linkup_enabled per-port option
Allows userspace to setup linkup for ports. Default is to take linkup
directly from ethtool state.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-11 10:03:52 -04:00
Jiri Pirko 14f066bab1 team: add bool option type
Add another (hopefully last) option type. Use NLA_FLAG to implement
that.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-11 10:03:51 -04:00
Jiri Pirko 80f7c6683f team: add support for per-port options
This patch allows to create per-port options. That becomes handy for all
sorts of stuff, for example for userspace driven link-state, 802.3ad
implementation and so on.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-11 10:03:51 -04:00
Jiri Pirko 01d7f30a9f team: add loadbalance mode
This patch introduces new team mode. It's TX port is selected by
user-set BPF hash function.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-04 20:30:40 -04:00
Jiri Pirko 2615598fc1 team: add binary option type
For transfering generic binary data (e.g. BPF code), introduce new
binary option type.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-04 20:30:40 -04:00
David S. Miller 86ebb02dc7 team: Stop using NLA_PUT*().
These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-02 04:33:43 -04:00
Danny Kukawka 7ce5d22219 net: use eth_hw_addr_random() and reset addr_assign_type
Use eth_hw_addr_random() instead of calling random_ether_addr()
to set addr_assign_type correctly to NET_ADDR_RANDOM.

Reset the state to NET_ADDR_PERM as soon as the MAC get
changed via .ndo_set_mac_address.

v2: adapt to renamed eth_hw_addr_random()

Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-15 15:34:17 -05:00
Jiri Pirko b82b9183d4 team: send only changed options/ports via netlink
This patch changes event message behaviour to send only updated records
instead of whole list. This fixes bug on which userspace receives non-actual
data in case multiple events occur in row.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-24 15:51:00 -05:00
Jiri Pirko 57459185a1 team: use vlan_vids_[addr/del]_by_dev
So far when vlan id was added to team device befor port was added, this
vid was not added to port's vlan filter. Also after removal, vid stayed
in port device's vlan filter. Benefit of new vlan functions to handle
this work.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08 19:52:43 -05:00
Jiri Pirko 87002b03ba net: introduce vlan_vid_[add/del] and use them instead of direct [add/kill]_vid ndo calls
This patch adds wrapper for ndo_vlan_rx_add_vid/ndo_vlan_rx_kill_vid
functions. Check for NETIF_F_HW_VLAN_FILTER feature is done in this
wrapper.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08 19:52:42 -05:00
Jiri Pirko 8e586137e6 net: make vlan ndo_vlan_rx_[add/kill]_vid return error value
Let caller know the result of adding/removing vlan id to/from vlan
filter.

In some drivers I make those functions to just return 0. But in those
where there is able to see if hw setup went correctly, return value is
set appropriately.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08 19:52:37 -05:00
Eric Dumazet 2cfa5a0471 net: treewide use of RCU_INIT_POINTER
rcu_assign_pointer(ptr, NULL) can be safely replaced by
RCU_INIT_POINTER(ptr, NULL)

(old rcu_assign_pointer() macro was testing the NULL value and could
omit the smp_wmb(), but this had to be removed because of compiler
warnings)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-23 18:48:19 -05:00