From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Sun, 8 Nov 2009 10:18:52 +0000 (+0000)
Subject: ipv6: udp: Optimise multicast reception
X-Git-Tag: v2.6.33-rc1~388^2~455
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1ab77f97ed03f5dae66ae4c64375beffab83772;p=pandora-kernel.git

ipv6: udp: Optimise multicast reception

IPV6 UDP multicast rx path is a bit complex and can hold a spinlock
for a long time.

Using a small (32 or 64 entries) stack of socket pointers can help
to perform expensive operations (skb_clone(), udp_queue_rcv_skb())
outside of the lock, in most cases.

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

Reading git-diff-tree failed