From: Yuchung Cheng <ycheng@google.com>
Date: Thu, 23 Aug 2012 07:05:17 +0000 (+0000)
Subject: tcp: fix cwnd reduction for non-sack recovery
X-Git-Tag: v3.6-rc5~20^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c4a56fec379ac0d7754e0d4da6a7361f1a4fe64;p=pandora-kernel.git

tcp: fix cwnd reduction for non-sack recovery

The cwnd reduction in fast recovery is based on the number of packets
newly delivered per ACK. For non-sack connections every DUPACK
signifies a packet has been delivered, but the sender mistakenly
skips counting them for cwnd reduction.

The fix is to compute newly_acked_sacked after DUPACKs are accounted
in sacked_out for non-sack connections.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Nandita Dukkipati <nanditad@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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