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authorAndrey Vagin <avagin@openvz.org>2013-08-16 19:04:36 +0400
committerDavid S. Miller <davem@davemloft.net>2013-08-20 13:07:15 -0700
commit7ed5c5ae96d23da22de95e1c7a239537acd378b1 (patch)
tree3047a05b711692bb9da8504c26c54fe3229f22be /net/ipv4
parent49baea881689a5a0d597d5d636e13567a4c449a6 (diff)
tcp: set timestamps for restored skb-s
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 <xemul@parallels.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrey Vagin <avagin@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/tcp.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 5423223e93c2..b2f6c74861af 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1121,6 +1121,13 @@ new_segment:
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.
*/
if (sk->sk_route_caps & NETIF_F_ALL_CSUM)