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@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/misc/ss.c b/misc/ss.c
index 2628c2e042f1cdb616ec8aa80d4f413b41dfd3f4..9438382b8e667529dc2cf4b020d8696a4175e992 100644 (file)
--- 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);