From: Neal Cardwell <ncardwell@google.com>
Date: Mon, 13 Feb 2012 20:22:08 +0000 (+0000)
Subject: tcp: fix tcp_shifted_skb() adjustment of lost_cnt_hint for FACK
X-Git-Tag: v3.3-rc4~2^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0af2a0d0576205dda778d25c6c344fc6508fc81d;p=pandora-kernel.git

tcp: fix tcp_shifted_skb() adjustment of lost_cnt_hint for FACK

This commit ensures that lost_cnt_hint is correctly updated in
tcp_shifted_skb() for FACK TCP senders. The lost_cnt_hint adjustment
in tcp_sacktag_one() only applies to non-FACK senders, so FACK senders
need their own adjustment.

This applies the spirit of 1e5289e121372a3494402b1b131b41bfe1cf9b7f -
except now that the sequence range passed into tcp_sacktag_one() is
correct we need only have a special case adjustment for FACK.

Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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