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ss: add support for bytes_sent, bytes_retrans, dsack_dups and reord_seen 

Wei Wang added these fields in linux-4.19

Tested:

ss -ti ...

	ts sack cubic wscale:8,8 rto:7 rtt:2.678/0.267 mss:1428 pmtu:1500
    rcvmss:536 advmss:1428 cwnd:91 ssthresh:65
(*) bytes_sent:17470606104 bytes_retrans:2856
    bytes_acked:17470483297
    segs_out:12234320 segs_in:622983
    data_segs_out:12234318 send 388.2Mbps lastrcv:986784 lastack:1
    pacing_rate 465.8Mbps delivery_rate 162.7Mbps
    delivered:12234235 delivered_ce:3669056
    busy:986784ms unacked:84 retrans:0/2
(*) dsack_dups:2
    rcv_space:14280 rcv_ssthresh:65535 notsent:2016336 minrtt:0.183

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Wei Wang <weiwan@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Wei Wang <weiwan@google.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Eric Dumazet 2018-11-29 02:27:54 -08:00 committed by Stephen Hemminger
parent 7ab8f249aa
commit 5eead6270a
1 changed files with 16 additions and 0 deletions
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16
misc/ss.c
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@ -819,6 +819,8 @@ struct tcpstat {
unsigned int not_sent;
unsigned int delivered;
unsigned int delivered_ce;
unsigned int dsack_dups;
unsigned int reord_seen;
double rcv_rtt;
double min_rtt;
int rcv_space;
@ -826,6 +828,8 @@ struct tcpstat {
unsigned long long busy_time;
unsigned long long rwnd_limited;
unsigned long long sndbuf_limited;
unsigned long long bytes_sent;
unsigned long long bytes_retrans;
bool has_ts_opt;
bool has_sack_opt;
bool has_ecn_opt;
@ -2426,6 +2430,10 @@ static void tcp_stats_print(struct tcpstat *s)
if (s->ssthresh)
out(" ssthresh:%d", s->ssthresh);
if (s->bytes_sent)
out(" bytes_sent:%llu", s->bytes_sent);
if (s->bytes_retrans)
out(" bytes_retrans:%llu", s->bytes_retrans);
if (s->bytes_acked)
out(" bytes_acked:%llu", s->bytes_acked);
if (s->bytes_received)
@ -2512,10 +2520,14 @@ static void tcp_stats_print(struct tcpstat *s)
out(" lost:%u", s->lost);
if (s->sacked && s->ss.state != SS_LISTEN)
out(" sacked:%u", s->sacked);
if (s->dsack_dups)
out(" dsack_dups:%u", s->dsack_dups);
if (s->fackets)
out(" fackets:%u", s->fackets);
if (s->reordering != 3)
out(" reordering:%d", s->reordering);
if (s->reord_seen)
out(" reord_seen:%d", s->reord_seen);
if (s->rcv_rtt)
out(" rcv_rtt:%g", s->rcv_rtt);
if (s->rcv_space)
@ -2837,6 +2849,10 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
s.sndbuf_limited = info->tcpi_sndbuf_limited;
s.delivered = info->tcpi_delivered;
s.delivered_ce = info->tcpi_delivered_ce;
s.dsack_dups = info->tcpi_dsack_dups;
s.reord_seen = info->tcpi_reord_seen;
s.bytes_sent = info->tcpi_bytes_sent;
s.bytes_retrans = info->tcpi_bytes_retrans;
tcp_stats_print(&s);
free(s.dctcp);
free(s.bbr_info);