From 719b958bbdfd1cb85d4b59826c503d0982322a9d Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 16 Nov 2011 07:59:06 +0000 Subject: [PATCH] ss: report ecnseen Support ECNSEEN reporting in ss command. ESTAB 0 0 10.170.73.123:4900 10.170.73.125:51001 uid:501 ino:385994 sk:f31e5f00 mem:(r0,w0,f0,t0) ts sack ecn ecnseen bic wscale:8,8 rto:210 rtt:18.75/15 ato:40 cwnd:10 send 69.9Mbps rcv_space:32768 "ecn" means TCP session negociated ECN capability (TCP layer) at setup time "ecnseen" at least one frame with ECT(0) or ECT(1) or ECN (IP layer) was received from peer. Signed-off-by: Eric Dumazet --- include/netinet/tcp.h | 1 + misc/ss.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/include/netinet/tcp.h b/include/netinet/tcp.h index 282b29c5..3f890a13 100644 --- a/include/netinet/tcp.h +++ b/include/netinet/tcp.h @@ -172,6 +172,7 @@ enum # define TCPI_OPT_SACK 2 # define TCPI_OPT_WSCALE 4 # define TCPI_OPT_ECN 8 +# define TCPI_OPT_ECN_SEEN 16 /* Values for tcpi_state. */ enum tcp_ca_state diff --git a/misc/ss.c b/misc/ss.c index af774d14..5ce40c04 100644 --- a/misc/ss.c +++ b/misc/ss.c @@ -1363,6 +1363,8 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r) printf(" sack"); if (info->tcpi_options & TCPI_OPT_ECN) printf(" ecn"); + if (info->tcpi_options & TCPI_OPT_ECN_SEEN) + printf(" ecnseen"); } if (tb[INET_DIAG_CONG])