From: Eric Dumazet <edumazet@google.com>
Date: Sun, 29 Jul 2012 21:06:13 +0000 (+0000)
Subject: net: TCP early demux cleanup
X-Git-Tag: v3.6-rc1~30^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cca32e4bf999a34ac08d959f351f2b30bcd02460;p=pandora-kernel.git

net: TCP early demux cleanup

early_demux() handlers should be called in RCU context, and as we
use skb_dst_set_noref(skb, dst), caller must not exit from RCU context
before dst use (skb_dst(skb)) or release (skb_drop(dst))

Therefore, rcu_read_lock()/rcu_read_unlock() pairs around
->early_demux() are confusing and not needed :

Protocol handlers are already in an RCU read lock section.
(__netif_receive_skb() does the rcu_read_lock() )

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