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author | glebius <glebius@FreeBSD.org> | 2016-03-15 00:19:30 +0000 |
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committer | glebius <glebius@FreeBSD.org> | 2016-03-15 00:19:30 +0000 |
commit | c39b2fd5d1f987bd7aa2e9893a928d17dbafecd4 (patch) | |
tree | 0fc2b9fefde4127eee101fa817a25b94c7d5a4f8 /usr.bin/netstat/inet.c | |
parent | 224119b2ed81616e221ae89688ff098941cfaa82 (diff) | |
download | FreeBSD-src-c39b2fd5d1f987bd7aa2e9893a928d17dbafecd4.zip FreeBSD-src-c39b2fd5d1f987bd7aa2e9893a928d17dbafecd4.tar.gz |
Print running TCP connection counts with TCP statistics.
Diffstat (limited to 'usr.bin/netstat/inet.c')
-rw-r--r-- | usr.bin/netstat/inet.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/usr.bin/netstat/inet.c b/usr.bin/netstat/inet.c index b0a0a7f..4793229 100644 --- a/usr.bin/netstat/inet.c +++ b/usr.bin/netstat/inet.c @@ -82,6 +82,7 @@ __FBSDID("$FreeBSD$"); #include <unistd.h> #include <libxo/xo.h> #include "netstat.h" +#include "nl_defs.h" char *inetname(struct in_addr *); void inetprint(const char *, struct in_addr *, int, const char *, int, @@ -638,6 +639,7 @@ void tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) { struct tcpstat tcpstat; + uint64_t tcps_states[TCP_NSTATES]; #ifdef INET6 if (tcp_done != 0) @@ -650,6 +652,10 @@ tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) sizeof(tcpstat), kread_counters) != 0) return; + if (fetch_stats_ro("net.inet.tcp.states", nl[N_TCPS_STATES].n_value, + &tcps_states, sizeof(tcps_states), kread_counters) != 0) + return; + xo_open_container("tcp"); xo_emit("{T:/%s}:\n", name); @@ -853,6 +859,28 @@ tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) #undef p2a #undef p3 xo_close_container("ecn"); + + xo_open_container("TCP connection count by state"); + xo_emit("{T:/TCP connection count by state}:\n"); + for (int i = 0; i < TCP_NSTATES; i++) { + /* + * XXXGL: is there a way in libxo to use %s + * in the "content string" of a format + * string? I failed to do that, that's why + * a temporary buffer is used to construct + * format string for xo_emit(). + */ + char fmtbuf[80]; + + if (sflag > 1 && tcps_states[i] == 0) + continue; + snprintf(fmtbuf, sizeof(fmtbuf), "\t{:%s/%%ju} " + "{Np:/connection ,connections} in %s state\n", + tcpstates[i], tcpstates[i]); + xo_emit(fmtbuf, (uintmax_t )tcps_states[i]); + } + xo_close_container("TCP connection count by state"); + xo_close_container("tcp"); } |