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linux tcp_stat impl

This commit is contained in:
Doug MacEachern 2007-07-14 16:31:37 +00:00
parent 414a38ac13
commit ef37a1bf3a
1 changed files with 39 additions and 1 deletions
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40
src/os/linux/linux_sigar.c
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@ -2079,11 +2079,49 @@ static int sigar_net_connection_get(sigar_t *sigar,
return status;
}
#define SNMP_TCP_PREFIX "Tcp: "
SIGAR_DECLARE(int)
sigar_tcp_stat_get(sigar_t *sigar,
sigar_tcp_stat_t *tcpstat)
{
return SIGAR_ENOTIMPL;
FILE *fp;
char buffer[1024], *ptr=buffer;
int status = SIGAR_ENOENT;
if (!(fp = fopen(PROC_FS_ROOT "net/snmp", "r"))) {
return errno;
}
while (fgets(buffer, sizeof(buffer), fp)) {
if (strnEQ(buffer, SNMP_TCP_PREFIX, sizeof(SNMP_TCP_PREFIX)-1)) {
if (fgets(buffer, sizeof(buffer), fp)) {
status = SIGAR_OK;
break;
}
}
}
fclose(fp);
if (status == SIGAR_OK) {
/* assuming field order, same in 2.2, 2.4 and 2.6 kernels */
/* Tcp: RtoAlgorithm RtoMin RtoMax */
ptr = sigar_skip_multiple_token(ptr, 4);
tcpstat->max_conn = sigar_strtoul(ptr);
tcpstat->active_opens = sigar_strtoull(ptr);
tcpstat->passive_opens = sigar_strtoull(ptr);
tcpstat->attempt_fails = sigar_strtoull(ptr);
tcpstat->estab_resets = sigar_strtoull(ptr);
tcpstat->curr_estab = sigar_strtoull(ptr);
tcpstat->in_segs = sigar_strtoull(ptr);
tcpstat->out_segs = sigar_strtoull(ptr);
tcpstat->retrans_segs = sigar_strtoull(ptr);
(void)sigar_strtoull(ptr); /* InErrs */
tcpstat->out_rsts = sigar_strtoull(ptr);
}
return status;
}
int sigar_proc_port_get(sigar_t *sigar, int protocol,