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| author |   Andrew Vagin <avagin@openvz.org> | 2013-08-27 12:21:55 +0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-08-29 15:11:12 -0400 |
| commit | e3e12028315749b7fa2edbc37328e5847be9ede9 (patch) | |
| tree | 56b91f5c9bf69c923b5ca397873145777aca2db4 /net/ipv4/raw.c | |
| parent | tcp: initialize rcv_tstamp for restored sockets (diff) | |
| download | linux-dev-e3e12028315749b7fa2edbc37328e5847be9ede9.tar.xz linux-dev-e3e12028315749b7fa2edbc37328e5847be9ede9.zip | |
tcp: don't apply tsoffset if rcv_tsecr is zero
The zero value means that tsecr is not valid, so it's a special case.
tsoffset is used to customize tcp_time_stamp for one socket.
tsoffset is usually zero, it's used when a socket was moved from one
host to another host.
Currently this issue affects logic of tcp_rcv_rtt_measure_ts. Due to
incorrect value of rcv_tsecr, tcp_rcv_rtt_measure_ts sets rto to
TCP_RTO_MAX.
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Eric Dumazet <eric.dumazet@gmail.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>
Reported-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/raw.c')
0 files changed, 0 insertions, 0 deletions