@@ -184,6 +184,10 @@ max segment size
congestion window size
.P
.TP
+.B pmtu:<pmtu>
+path MTU value
+.P
+.TP
.B ssthresh:<ssthresh>
tcp congestion window slow start threshold
.P
@@ -790,6 +790,7 @@ struct tcpstat {
int mss;
int rcv_mss;
int advmss;
+ unsigned int pmtu;
unsigned int cwnd;
unsigned int lastsnd;
unsigned int lastrcv;
@@ -2360,6 +2361,8 @@ static void tcp_stats_print(struct tcpstat *s)
if (s->mss)
out(" mss:%d", s->mss);
+ if (s->pmtu)
+ out(" pmtu:%u", s->pmtu);
if (s->rcv_mss)
out(" rcvmss:%d", s->rcv_mss);
if (s->advmss)
@@ -2707,6 +2710,7 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
s.reordering = info->tcpi_reordering;
s.rcv_ssthresh = info->tcpi_rcv_ssthresh;
s.cwnd = info->tcpi_snd_cwnd;
+ s.pmtu = info->tcpi_pmtu;
if (info->tcpi_snd_ssthresh < 0xFFFF)
s.ssthresh = info->tcpi_snd_ssthresh;
v3: Rebase and use out() instead of printf(). v2: Print the path MTU immediately after the MSS, as it is easier to parse for humans (suggested by Neal Cardwell). Signed-off-by: Roman Mashak <mrv@mojatatu.com> --- man/man8/ss.8 | 4 ++++ misc/ss.c | 4 ++++ 2 files changed, 8 insertions(+)