netdev - [PATCH iproute2] ss: report ecnseen

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 16 Nov 2011 05:51:27 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	netdev@...r.kernel.org
Subject: [PATCH iproute2] 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 <eric.dumazet@...il.com>
---
 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 282b29c..95a4fe6 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_ECNSEEN	16
 
 /* Values for tcpi_state.  */
 enum tcp_ca_state
diff --git a/misc/ss.c b/misc/ss.c
index b00841b..778bf0a 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -1357,6 +1357,8 @@ 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_ECNSEEN)
+				printf(" ecnseen");
 		}
 
 		if (tb[INET_DIAG_CONG])


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html