flowtable.c revision 287649 
1/*-
2 * Copyright (c) 2014 Gleb Smirnoff <glebius@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 * 4. Neither the name of the University nor the names of its contributors
13 *    may be used to endorse or promote products derived from this software
14 *    without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/usr.bin/netstat/flowtable.c 287649 2015-09-11 04:37:01Z markj $");
31
32#include <sys/param.h>
33
34#include <net/flowtable.h>
35
36#include <stdint.h>
37#include <stdio.h>
38#include <stdbool.h>
39
40#include "netstat.h"
41
42/*
43 * Print flowtable statistics.
44 */
45
46static void
47print_stats(struct flowtable_stat *stat)
48{
49
50#define	p(f, m) if (stat->f || sflag <= 1) \
51	printf(m, (uintmax_t)stat->f, plural(stat->f))
52#define	p2(f, m) if (stat->f || sflag <= 1) \
53	printf(m, (uintmax_t)stat->f, plurales(stat->f))
54
55	p(ft_lookups, "\t%ju lookup%s\n");
56	p(ft_hits, "\t%ju hit%s\n");
57	p2(ft_misses, "\t%ju miss%s\n");
58	p(ft_inserts, "\t%ju insert%s\n");
59	p(ft_collisions, "\t%ju collision%s\n");
60	p(ft_free_checks, "\t%ju free check%s\n");
61	p(ft_frees, "\t%ju free%s\n");
62	p(ft_fail_lle_invalid,
63	    "\t%ju lookup%s with not resolved Layer 2 address\n");
64
65#undef	p2
66#undef	p
67}
68
69void
70flowtable_stats(void)
71{
72	struct flowtable_stat stat;
73
74	if (!live)
75		return;
76
77	if (fetch_stats("net.flowtable.ip4.stat", 0, &stat,
78	    sizeof(stat), NULL) == 0) {
79		printf("flowtable for IPv4:\n");
80		print_stats(&stat);
81	}
82
83	if (fetch_stats("net.flowtable.ip6.stat", 0, &stat,
84	    sizeof(stat), NULL) == 0) {
85		printf("flowtable for IPv6:\n");
86		print_stats(&stat);
87	}
88}
89