From f3f905389f1aaae9e091a28d018c66e08c85eddd Mon Sep 17 00:00:00 2001 From: Andrey Vagin Date: Fri, 16 Aug 2013 19:04:36 +0400 Subject: tcp: set timestamps for restored skb-s [ Upstream commit 7ed5c5ae96d23da22de95e1c7a239537acd378b1 ] When the repair mode is turned off, the write queue seqs are updated so that the whole queue is considered to be 'already sent. The "when" field must be set for such skb. It's used in tcp_rearm_rto for example. If the "when" field isn't set, the retransmit timeout can be calculated incorrectly and a tcp connected can stop for two minutes (TCP_RTO_MAX). Acked-by: Pavel Emelyanov Cc: "David S. Miller" Cc: Alexey Kuznetsov Cc: James Morris Cc: Hideaki YOSHIFUJI Cc: Patrick McHardy Signed-off-by: Andrey Vagin Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv4/tcp.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'net/ipv4/tcp.c') diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index ab450c099aa..2005561861a 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1117,6 +1117,13 @@ new_segment: if (!skb) goto wait_for_memory; + /* + * All packets are restored as if they have + * already been sent. + */ + if (tp->repair) + TCP_SKB_CB(skb)->when = tcp_time_stamp; + /* * Check whether we can use HW checksum. */ -- cgit v1.2.3