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(parent: 897dc80) | patch
ip6tnl: avoid touching dst refcount in ip6_tnl_xmit2()
authorEric Dumazet <eric.dumazet@gmail.com>
Thu, 28 Jul 2011 04:32:25 +0000 (04:32 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 1 Aug 2011 07:12:00 +0000 (00:12 -0700)
commit89b0212697e92bc59a021a2338cd8c09f919325c
tree633279786602d3677ea5c4959528aa00219afed2tree | snapshot (tar.gz zip)
parent897dc80b951e996ba4d26c0038e81a505b92aec1commit | diff
ip6tnl: avoid touching dst refcount in ip6_tnl_xmit2()

Even using percpu stats, we still hit tunnel dst_entry refcount in
ip6_tnl_xmit2()

Since we are in RCU locked section, we can use skb_dst_set_noref() and
avoid these atomic operations, leaving dst shared on cpus.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/ip6_tunnel.c diff | blob | blame | history