tree c970f5b6134fac0c8da11f20ae364c92ae80a8ad
parent dd24c00191d5e4a1ae896aafe33c6b8095ab4bd1
author Eric Dumazet <dada1@cosmosbay.com> 1227690498 -0800
committer David S. Miller <davem@davemloft.net> 1227690498 -0800

net: release skb->dst in sock_queue_rcv_skb()

When queuing a skb to sk->sk_receive_queue, we can release its dst,
not anymore needed.  Since current cpu did the dst_hold(), refcount is
probably still hot int this cpu caches.

This avoids readers to access the original dst to decrement its
refcount, possibly a long time after packet reception. This should
speedup UDP and RAW receive path.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>