diff options
Diffstat (limited to 'usr.bin/netstat/flowtable.c')
| -rw-r--r-- | usr.bin/netstat/flowtable.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/usr.bin/netstat/flowtable.c b/usr.bin/netstat/flowtable.c new file mode 100644 index 0000000..a232d80 --- /dev/null +++ b/usr.bin/netstat/flowtable.c @@ -0,0 +1,85 @@ +/*- + * Copyright (c) 2014 Gleb Smirnoff <glebius@FreeBSD.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); +#include <sys/param.h> +#include <sys/sysctl.h> +#include <net/flowtable.h> +#include <err.h> +#include <stdint.h> +#include <stdio.h> +#include <stdbool.h> +#include "netstat.h" + +/* + * Print flowtable statistics. + */ + +static void +print_stats(struct flowtable_stat *stat) +{ + +#define p(f, m) if (stat->f || sflag <= 1) \ + printf(m, (uintmax_t)stat->f, plural(stat->f)) +#define p2(f, m) if (stat->f || sflag <= 1) \ + printf(m, (uintmax_t)stat->f, plurales(stat->f)) + + p(ft_lookups, "\t%ju lookup%s\n"); + p(ft_hits, "\t%ju hit%s\n"); + p2(ft_misses, "\t%ju miss%s\n"); + p(ft_inserts, "\t%ju insert%s\n"); + p(ft_collisions, "\t%ju collision%s\n"); + p(ft_free_checks, "\t%ju free check%s\n"); + p(ft_frees, "\t%ju free%s\n"); + p(ft_fail_lle_invalid, + "\t%ju lookup%s with not resolved Layer 2 address\n"); + +#undef p2 +#undef p +} + +void +flowtable_stats(void) +{ + struct flowtable_stat stat; + size_t len = sizeof(stat); + + if (!live) + return; + + if (sysctlbyname("net.flowtable.ip4.stat", &stat, &len, NULL, 0) == 0) { + printf("flowtable for IPv4:\n"); + print_stats(&stat); + } + + if (sysctlbyname("net.flowtable.ip6.stat", &stat, &len, NULL, 0) == 0) { + printf("flowtable for IPv6:\n"); + print_stats(&stat); + } +} |
