From: Eric Dumazet <edumazet@google.com>
Date: Sun, 3 Jun 2012 19:50:43 +0000 (+0000)
Subject: tcp: tcp_make_synack() can use alloc_skb()
X-Git-Tag: v3.6-rc1~125^2~621
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=90ba9b1986b5ac4b2d184575847147ea7c4280a2;p=pandora-kernel.git

tcp: tcp_make_synack() can use alloc_skb()

There is no value using sock_wmalloc() in tcp_make_synack().

A listener socket only sends SYNACK packets, they are not queued in a
socket queue, only in Qdisc and device layers, so the number of in
flight packets is limited in these layers. We used sock_wmalloc() with
the %force parameter set to 1 to ignore socket limits anyway.

This patch removes two atomic operations per SYNACK packet.

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