From: Eric Dumazet <edumazet@google.com>
Date: Thu, 18 Oct 2012 09:14:12 +0000 (+0000)
Subject: tcp: fix FIONREAD/SIOCINQ
X-Git-Tag: v3.7-rc3~7^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a3374c42aa5f7237e87ff3b0622018636b0c847e;p=pandora-kernel.git

tcp: fix FIONREAD/SIOCINQ

tcp_ioctl() tries to take into account if tcp socket received a FIN
to report correct number bytes in receive queue.

But its flaky because if the application ate the last skb,
we return 1 instead of 0.

Correct way to detect that FIN was received is to test SOCK_DONE.

Reported-by: Elliot Hughes <enh@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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