From: Eric Dumazet <eric.duma...@gmail.com> Date: Wed, 20 May 2015 16:35:41 -0700
> From: Marcelo Ricardo Leitner <mleit...@redhat.com> > > This patch tracks the total number of inbound and outbound segments on a > TCP socket. One may use this number to have an idea on connection > quality when compared against the retransmissions. > > RFC4898 named these : tcpEStatsPerfSegsIn and tcpEStatsPerfSegsOut > > These are a 32bit field each and can be fetched both from TCP_INFO > getsockopt() if one has a handle on a TCP socket, or from inet_diag > netlink facility (iproute2/ss patch will follow) > > Note that tp->segs_out was placed near tp->snd_nxt for good data > locality and minimal performance impact, while tp->segs_in was placed > near tp->bytes_received for the same reason. > > Join work with Eric Dumazet. > > Note that received SYN are accounted on the listener, but sent SYNACK > are not accounted. > > Signed-off-by: Marcelo Ricardo Leitner <mleit...@redhat.com> > Signed-off-by: Eric Dumazet <eduma...@google.com> Applied to net-next, thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
