From: Eric Dumazet <edumazet@google.com>
Date: Thu, 30 Oct 2014 17:32:34 +0000 (-0700)
Subject: net: skb_fclone_busy() needs to detect orphaned skb
X-Git-Tag: omap-for-v3.19/fixes-not-urgent-part1~25^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=39bb5e62867de82b269b07df900165029b928359;p=pandora-kernel.git

net: skb_fclone_busy() needs to detect orphaned skb

Some drivers are unable to perform TX completions in a bound time.
They instead call skb_orphan()

Problem is skb_fclone_busy() has to detect this case, otherwise
we block TCP retransmits and can freeze unlucky tcp sessions on
mostly idle hosts.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 1f3279ae0c13 ("tcp: avoid retransmits of TCP packets hanging in host queues")
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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