static int
fetch_ipstats(struct ip_stats *st)
{
struct ip_stats stattmp[SMP_MAXCPU];
size_t len;
int name[4], cpucnt;
name[0] = CTL_NET;
name[1] = PF_INET;
name[2] = IPPROTO_IP;
name[3] = IPCTL_STATS;
len = sizeof(struct ip_stats) * SMP_MAXCPU;
if (sysctl(name, 4, stattmp, &len, NULL, 0) < 0) {
error("sysctl getting ip_stats failed");
return -1;
}
cpucnt = len / sizeof(struct ip_stats);
ip_stats_agg(stattmp, st, cpucnt);
return 0;
}
/*
* Dump IP statistics structure.
*/
void
ip_stats(u_long off __unused, const char *name, int af1 __unused)
{
struct ip_stats ipstat, *stattmp;
struct ip_stats zerostat[SMP_MAXCPU];
size_t len = sizeof(struct ip_stats) * SMP_MAXCPU;
int cpucnt;
if (zflag)
memset(zerostat, 0, len);
if ((stattmp = malloc(len)) == NULL) {
return;
} else {
if (sysctlbyname("net.inet.ip.stats", stattmp, &len,
zflag ? zerostat : NULL, zflag ? len : 0) < 0) {
warn("sysctl: net.inet.ip.stats");
free(stattmp);
return;
} else {
if ((stattmp = realloc(stattmp, len)) == NULL) {
warn("ip_stats");
return;
}
}
}
cpucnt = len / sizeof(struct ip_stats);
ip_stats_agg(stattmp, &ipstat, cpucnt);
printf("%s:\n", name);
#define p(f, m) if (ipstat.f || sflag <= 1) \
printf(m, ipstat.f, plural(ipstat.f))
#define p1a(f, m) if (ipstat.f || sflag <= 1) \
printf(m, ipstat.f)
p(ips_total, "\t%lu total packet%s received\n");
p(ips_badsum, "\t%lu bad header checksum%s\n");
p1a(ips_toosmall, "\t%lu with size smaller than minimum\n");
p1a(ips_tooshort, "\t%lu with data size < data length\n");
p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n");
p1a(ips_badhlen, "\t%lu with header length < data size\n");
p1a(ips_badlen, "\t%lu with data length < header length\n");
p1a(ips_badoptions, "\t%lu with bad options\n");
p1a(ips_badvers, "\t%lu with incorrect version number\n");
p(ips_fragments, "\t%lu fragment%s received\n");
p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n");
p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n");
p(ips_reassembled, "\t%lu packet%s reassembled ok\n");
p(ips_delivered, "\t%lu packet%s for this host\n");
p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n");
p(ips_forward, "\t%lu packet%s forwarded");
p(ips_fastforward, " (%lu packet%s fast forwarded)");
if (ipstat.ips_forward || sflag <= 1)
putchar('\n');
p(ips_cantforward, "\t%lu packet%s not forwardable\n");
p(ips_notmember,
"\t%lu packet%s received for unknown multicast group\n");
p(ips_redirectsent, "\t%lu redirect%s sent\n");
p(ips_localout, "\t%lu packet%s sent from this host\n");
p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n");
p(ips_odropped,
"\t%lu output packet%s dropped due to no bufs, etc.\n");
p(ips_noroute, "\t%lu output packet%s discarded due to no route\n");
p(ips_fragmented, "\t%lu output datagram%s fragmented\n");
p(ips_ofragments, "\t%lu fragment%s created\n");
p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n");
p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n");
p(ips_badaddr, "\t%lu datagram%s with bad address in header\n");
free(stattmp);
#undef p
#undef p1a
}
