ss: add support for segs_in and segs_out

Two new tcp_info fields: tcpi_segs_in and tcpi_segs_out.
(2efd055c53c06b7e89c167c98069bab9afce7e59)

~: ss -ti src :22
	 cubic wscale:7,6 rto:201 rtt:0.244/0.012 ato:40 mss:1418 cwnd:21 bytes_acked:80605 bytes_received:20491 segs_out:414 segs_in:600 send 976.3Mbps lastsnd:23 lastrcv:23 lastack:22 pacing_rate 1952.7Mbps rcv_rtt:98 rcv_space:28960

Signed-off-by: Craig Gallek <kraig@google.com>
Reviewed-by: Marcelo Ricardo Leitner <mleitner@redhat.com>

diff --git a/misc/ss.c b/misc/ss.c
index 0db0a529b3d3f31384e8476500abb24f81d5bf2d..aedf10f80e73db7880c278b8915d66087936ee40 100644 (file)
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -769,6 +769,8 @@ struct tcpstat
        double              pacing_rate_max;
        unsigned long long  bytes_acked;
        unsigned long long  bytes_received;
+       unsigned int        segs_out;
+       unsigned int        segs_in;
        unsigned int        unacked;
        unsigned int        retrans;
        unsigned int        retrans_total;
@@ -1688,6 +1690,10 @@ static void tcp_stats_print(struct tcpstat *s)
                printf(" bytes_acked:%llu", s->bytes_acked);
        if (s->bytes_received)
                printf(" bytes_received:%llu", s->bytes_received);
+       if (s->segs_out)
+               printf(" segs_out:%u", s->segs_out);
+       if (s->segs_in)
+               printf(" segs_in:%u", s->segs_in);
 
        if (s->dctcp && s->dctcp->enabled) {
                struct dctcpstat *dctcp = s->dctcp;
@@ -1982,6 +1988,8 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
                }
                s.bytes_acked = info->tcpi_bytes_acked;
                s.bytes_received = info->tcpi_bytes_received;
+               s.segs_out = info->tcpi_segs_out;
+               s.segs_in = info->tcpi_segs_in;
                tcp_stats_print(&s);
                if (s.dctcp)
                        free(s.dctcp);