From: Yuchung Cheng <ych...@google.com> Date: Tue, 4 Apr 2017 14:15:40 -0700
> Currently the reordering SNMP counters only increase if a connection > sees a higher degree then it has previously seen. It ignores if the > reordering degree is not greater than the default system threshold. > This significantly under-counts the number of reordering events > and falsely convey that reordering is rare on the network. > > This patch properly and faithfully records the number of reordering > events detected by the TCP stack, just like the comment says "this > exciting event is worth to be remembered". Note that even so TCP > still under-estimate the actual reordering events because TCP > requires TS options or certain packet sequences to detect reordering > (i.e. ACKing never-retransmitted sequence in recovery or disordered > state). > > Signed-off-by: Yuchung Cheng <ych...@google.com> > Signed-off-by: Eric Dumazet <eduma...@google.com> > Signed-off-by: Neal Cardwell <ncardw...@google.com> > Signed-off-by: Soheil Hassas Yeganeh <soh...@google.com> Applied.
