tree 7cc2a560a0b95d500b12c172f9e8b32b1d1321d1
parent cd094927c68718c8bda432c18e85b6ec3a9ee3d1
author Willem de Bruijn <willemb@google.com> 1407869596 -0400
committer David S. Miller <davem@davemloft.net> 1407985566 -0700

net-timestamp: fix missing ACK timestamp

ACK timestamps are generated in tcp_clean_rtx_queue. The TSO datapath
can break out early, causing the timestamp code to be skipped. Move
the code up before the break.

Reported-by: David S. Miller <davem@davemloft.net>

Also fix a boundary condition: tp->snd_una is the next unacknowledged
byte and between tests inclusive (a <= b <= c), so generate a an ACK
timestamp if (prior_snd_una <= tskey <= tp->snd_una - 1).

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>