On Tue, 20 Sep 2016 22:43:44 -0400 Neal Cardwell <ncardw...@google.com> wrote:
> Dump useful TCP BBR state information from a struct tcp_bbr_info that > was grabbed using the inet_diag API. > > We tolerate info that is shorter or longer than expected, in case the > kernel is older or newer than the ss binary. We simply print the > minimum of what is expected from the kernel and what is provided from > the kernel. We use the same trick as that used for struct tcp_info: > when the info from the kernel is shorter than we hoped, we pad the end > with zeroes, and don't print fields if they are zero. > > The BBR output looks like: > bbr:(bw:1.2Mbps,mrtt:18.965,pacing_gain:2.88672,cwnd_gain:2.88672) > > The motivation here is to be consistent with DCTCP, which looks like: > dctcp(ce_state:23,alpha:23,ab_ecn:23,ab_tot:23) > > Signed-off-by: Neal Cardwell <ncardw...@google.com> > Signed-off-by: Yuchung Cheng <ych...@google.com> > Signed-off-by: Eric Dumazet <eduma...@google.com> > Signed-off-by: Soheil Hassas Yeganeh <soh...@google.com> Applied, to net-next. The first two patches were unnecessary. Already picked up current net-next headers.
