From 2ee22a90c7afac265bb6f7abea610b938195e2b8 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 6 Jul 2015 05:18:09 -0700 Subject: 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 Cc: Alexei Starovoitov Cc: Jamal Hadi Salim Cc: John Fastabend Acked-by: Jamal Hadi Salim Acked-by: Alexei Starovoitov Signed-off-by: David S. Miller --- include/net/tc_act/tc_mirred.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') 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) \ -- cgit v1.2.3-59-g8ed1b