tree 45078d076bcd952d8820c590653939b312d06ac2
parent 22b1a9203ea634ac0ee5240e021613da3328275f
author Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> 1181945323 -0700
committer David S. Miller <davem@davemloft.net> 1181945323 -0700

[TCP]: Congestion control API RTT sampling fix

Commit 164891aadf1721fca4dce473bb0e0998181537c6 broke RTT
sampling of congestion control modules. Inaccurate timestamps
could be fed to them without providing any way for them to
identify such cases. Previously RTT sampler was called only if
FLAG_RETRANS_DATA_ACKED was not set filtering inaccurate
timestamps nicely. In addition, the new behavior could give an
invalid timestamp (zero) to RTT sampler if only skbs with
TCPCB_RETRANS were ACKed. This solves both problems.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>