tree 06ede4b3ed91be899f8f29b4c7eb1fb76f1ade97
parent 4b0b72f7dd617b13abd1b04c947e15873e011a24
author Eric Dumazet <eric.dumazet@gmail.com> 1272493911 -0700
committer David S. Miller <davem@davemloft.net> 1272493911 -0700

net: ip_queue_rcv_skb() helper

When queueing a skb to socket, we can immediately release its dst if
target socket do not use IP_CMSG_PKTINFO.

tcp_data_queue() can drop dst too.

This to benefit from a hot cache line and avoid the receiver, possibly
on another cpu, to dirty this cache line himself.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>