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ss: display not_sent and min_rtt info 

Display new info from net-next kernel.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Stephen Hemminger 2016-02-17 17:43:59 -08:00
parent 0aefb9fa41
commit 9e99e49528
3 changed files with 12 additions and 0 deletions
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1
include/linux/genetlink.h
View File

@ -21,6 +21,7 @@ struct genlmsghdr {
#define GENL_CMD_CAP_DO 0x02
#define GENL_CMD_CAP_DUMP 0x04
#define GENL_CMD_CAP_HASPOL 0x08
#define GENL_UNS_ADMIN_PERM 0x10
/*
* List of reserved static generic netlink identifiers:

3
include/linux/tcp.h
View File

@ -196,6 +196,9 @@ struct tcp_info {
__u64 tcpi_bytes_received; /* RFC4898 tcpEStatsAppHCThruOctetsReceived */
__u32 tcpi_segs_out; /* RFC4898 tcpEStatsPerfSegsOut */
__u32 tcpi_segs_in; /* RFC4898 tcpEStatsPerfSegsIn */
__u32 tcpi_notsent_bytes;
__u32 tcpi_min_rtt;
};
/* for TCP_MD5SIG socket option */

8
misc/ss.c
View File

@ -778,7 +778,9 @@ struct tcpstat
unsigned int sacked;
unsigned int fackets;
unsigned int reordering;
unsigned int not_sent;
double rcv_rtt;
double min_rtt;
int rcv_space;
bool has_ts_opt;
bool has_sack_opt;
@ -1737,6 +1739,10 @@ static void tcp_stats_print(struct tcpstat *s)
printf(" rcv_rtt:%g", s->rcv_rtt);
if (s->rcv_space)
printf(" rcv_space:%d", s->rcv_space);
if (s->not_sent)
printf(" notsent:%u", s->not_sent);
if (s->min_rtt)
printf(" minrtt:%g", s->min_rtt);
}
static void tcp_timer_print(struct tcpstat *s)
@ -1990,6 +1996,8 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
s.bytes_received = info->tcpi_bytes_received;
s.segs_out = info->tcpi_segs_out;
s.segs_in = info->tcpi_segs_in;
s.not_sent = info->tcpi_notsent_bytes;
s.min_rtt = (double) info->tcpi_min_rtt / 1000;
tcp_stats_print(&s);
free(s.dctcp);
}