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net: sched: RCU cls_tcindex
authorJohn Fastabend <john.fastabend@gmail.com>
Sat, 13 Sep 2014 03:08:20 +0000 (20:08 -0700)
committerDavid S. Miller <davem@davemloft.net>
Sat, 13 Sep 2014 16:30:26 +0000 (12:30 -0400)
commit331b72922c5f58d48fd5500acadc91777cc31970
tree03f16a1e47e4b4c01dca29868a9b13d86634aa82
parent1109c00547fc66df45b9ff923544be4c1e1bec13
net: sched: RCU cls_tcindex

Make cls_tcindex RCU safe.

This patch addds a new RCU routine rcu_dereference_bh_rtnl() to check
caller either holds the rcu read lock or RTNL. This is needed to
handle the case where tcindex_lookup() is being called in both cases.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/rtnetlink.h
net/sched/cls_tcindex.c