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authorEric Dumazet <edumazet@google.com>2015-07-06 05:18:09 -0700
committerDavid S. Miller <davem@davemloft.net>2015-07-08 13:50:42 -0700
commit2ee22a90c7afac265bb6f7abea610b938195e2b8 (patch)
tree586595f3aa88196669cbff3b6580353135c6e335 /include/net/tc_act
parent56e5d1ca183d8616fab377d7d466c244b4dbb3b9 (diff)
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.h2
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) \