netdev - [PATCH iproute2] ss: add support for rcv

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Message-ID: <20231031111720.2871511-1-edumazet@google.com>
Date: Tue, 31 Oct 2023 11:17:20 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: David Ahern <dsahern@...nel.org>, Stephen Hemminger <stephen@...workplumber.org>
Cc: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, Neal Cardwell <ncardwell@...gle.com>, netdev@...r.kernel.org, 
	eric.dumazet@...il.com, Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH iproute2] ss: add support for rcv_wnd and rehash

tcpi_rcv_wnd and tcpi_rehash were added in linux-6.2.

$ ss -ti
...
 cubic wscale:7,7 ... minrtt:0.01 snd_wnd:65536 rcv_wnd:458496

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 misc/ss.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/misc/ss.c b/misc/ss.c
index 2628c2e042f1cdb616ec8aa80d4f413b41dfd3f4..9438382b8e667529dc2cf4b020d8696a4175e992 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -865,6 +865,8 @@ struct tcpstat {
 	double		    min_rtt;
 	unsigned int 	    rcv_ooopack;
 	unsigned int	    snd_wnd;
+	unsigned int	    rcv_wnd;
+	unsigned int	    rehash;
 	int		    rcv_space;
 	unsigned int        rcv_ssthresh;
 	unsigned long long  busy_time;
@@ -2711,6 +2713,10 @@ static void tcp_stats_print(struct tcpstat *s)
 		out(" rcv_ooopack:%u", s->rcv_ooopack);
 	if (s->snd_wnd)
 		out(" snd_wnd:%u", s->snd_wnd);
+	if (s->rcv_wnd)
+		out(" rcv_wnd:%u", s->rcv_wnd);
+	if (s->rehash)
+		out(" rehash:%u", s->rehash);
 }
 
 static void tcp_timer_print(struct tcpstat *s)
@@ -3147,6 +3153,8 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
 		s.bytes_retrans = info->tcpi_bytes_retrans;
 		s.rcv_ooopack = info->tcpi_rcv_ooopack;
 		s.snd_wnd = info->tcpi_snd_wnd;
+		s.rcv_wnd = info->tcpi_rcv_wnd;
+		s.rehash = info->tcpi_rehash;
 		tcp_stats_print(&s);
 		free(s.dctcp);
 		free(s.bbr_info);
-- 
2.42.0.820.g83a721a137-goog