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| author |   Eric Dumazet <edumazet@google.com> | 2015-07-06 05:18:09 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-07-08 13:50:42 -0700 |
| commit | 2ee22a90c7afac265bb6f7abea610b938195e2b8 (patch) | |
| tree | 586595f3aa88196669cbff3b6580353135c6e335 /include/net/tc_act | |
| parent | net_sched: act_gact: remove spinlock in fast path (diff) | |
| download | linux-dev-2ee22a90c7afac265bb6f7abea610b938195e2b8.tar.xz linux-dev-2ee22a90c7afac265bb6f7abea610b938195e2b8.zip | |
net_sched: act_mirred: remove spinlock in fast path
Like act_gact, act_mirred can be lockless in packet processing
1) Use percpu stats
2) update lastuse only every clock tick to avoid false sharing
3) use rcu to protect tcfm_dev
4) Remove spinlock usage, as it is no longer needed.
Next step : add multi queue capability to ifb device
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/tc_act')
| -rw-r--r-- | include/net/tc_act/tc_mirred.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/tc_act/tc_mirred.h b/include/net/tc_act/tc_mirred.h index 4dd77a1c106b..dae96bae1c19 100644 --- a/include/net/tc_act/tc_mirred.h +++ b/include/net/tc_act/tc_mirred.h @@ -8,7 +8,7 @@ struct tcf_mirred { int tcfm_eaction; int tcfm_ifindex; int tcfm_ok_push; - struct net_device *tcfm_dev; + struct net_device __rcu *tcfm_dev; struct list_head tcfm_list; }; #define to_mirred(a) \ |