1*66dfcc85SDavid van Moolenbroek /* $NetBSD: bpf.c,v 1.11 2012/12/14 08:15:44 msaitoh Exp $ */
2*66dfcc85SDavid van Moolenbroek
3*66dfcc85SDavid van Moolenbroek /*
4*66dfcc85SDavid van Moolenbroek * Copyright (c) 2005 The NetBSD Foundation, Inc.
5*66dfcc85SDavid van Moolenbroek * All rights reserved.
6*66dfcc85SDavid van Moolenbroek *
7*66dfcc85SDavid van Moolenbroek * This code is derived from software contributed to The NetBSD Foundation
8*66dfcc85SDavid van Moolenbroek * by Rui Paulo.
9*66dfcc85SDavid van Moolenbroek *
10*66dfcc85SDavid van Moolenbroek * Redistribution and use in source and binary forms, with or without
11*66dfcc85SDavid van Moolenbroek * modification, are permitted provided that the following conditions
12*66dfcc85SDavid van Moolenbroek * are met:
13*66dfcc85SDavid van Moolenbroek * 1. Redistributions of source code must retain the above copyright
14*66dfcc85SDavid van Moolenbroek * notice, this list of conditions and the following disclaimer.
15*66dfcc85SDavid van Moolenbroek * 2. Redistributions in binary form must reproduce the above copyright
16*66dfcc85SDavid van Moolenbroek * notice, this list of conditions and the following disclaimer in the
17*66dfcc85SDavid van Moolenbroek * documentation and/or other materials provided with the distribution.
18*66dfcc85SDavid van Moolenbroek *
19*66dfcc85SDavid van Moolenbroek * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*66dfcc85SDavid van Moolenbroek * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*66dfcc85SDavid van Moolenbroek * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*66dfcc85SDavid van Moolenbroek * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*66dfcc85SDavid van Moolenbroek * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*66dfcc85SDavid van Moolenbroek * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*66dfcc85SDavid van Moolenbroek * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*66dfcc85SDavid van Moolenbroek * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*66dfcc85SDavid van Moolenbroek * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*66dfcc85SDavid van Moolenbroek * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*66dfcc85SDavid van Moolenbroek * POSSIBILITY OF SUCH DAMAGE.
30*66dfcc85SDavid van Moolenbroek */
31*66dfcc85SDavid van Moolenbroek
32*66dfcc85SDavid van Moolenbroek #include <err.h>
33*66dfcc85SDavid van Moolenbroek #include <errno.h>
34*66dfcc85SDavid van Moolenbroek #include <fcntl.h>
35*66dfcc85SDavid van Moolenbroek #include <kvm.h>
36*66dfcc85SDavid van Moolenbroek #include <stdio.h>
37*66dfcc85SDavid van Moolenbroek #include <stdlib.h>
38*66dfcc85SDavid van Moolenbroek #include <string.h>
39*66dfcc85SDavid van Moolenbroek #include <unistd.h>
40*66dfcc85SDavid van Moolenbroek #include <net/if.h>
41*66dfcc85SDavid van Moolenbroek #include <sys/types.h>
42*66dfcc85SDavid van Moolenbroek #include <sys/param.h>
43*66dfcc85SDavid van Moolenbroek #include <sys/sysctl.h>
44*66dfcc85SDavid van Moolenbroek #include <net/bpfdesc.h>
45*66dfcc85SDavid van Moolenbroek #include <net/bpf.h>
46*66dfcc85SDavid van Moolenbroek #include "netstat.h"
47*66dfcc85SDavid van Moolenbroek #include "prog_ops.h"
48*66dfcc85SDavid van Moolenbroek
49*66dfcc85SDavid van Moolenbroek void
bpf_stats(void)50*66dfcc85SDavid van Moolenbroek bpf_stats(void)
51*66dfcc85SDavid van Moolenbroek {
52*66dfcc85SDavid van Moolenbroek struct bpf_stat bpf_s;
53*66dfcc85SDavid van Moolenbroek size_t len = sizeof(bpf_s);
54*66dfcc85SDavid van Moolenbroek
55*66dfcc85SDavid van Moolenbroek if (use_sysctl) {
56*66dfcc85SDavid van Moolenbroek if (sysctlbyname("net.bpf.stats", &bpf_s, &len, NULL, 0) == -1)
57*66dfcc85SDavid van Moolenbroek err(1, "net.bpf.stats");
58*66dfcc85SDavid van Moolenbroek
59*66dfcc85SDavid van Moolenbroek printf("bpf:\n");
60*66dfcc85SDavid van Moolenbroek printf("\t%" PRIu64 " total packets received\n",
61*66dfcc85SDavid van Moolenbroek bpf_s.bs_recv);
62*66dfcc85SDavid van Moolenbroek printf("\t%" PRIu64 " total packets captured\n",
63*66dfcc85SDavid van Moolenbroek bpf_s.bs_capt);
64*66dfcc85SDavid van Moolenbroek printf("\t%" PRIu64 " total packets dropped\n",
65*66dfcc85SDavid van Moolenbroek bpf_s.bs_drop);
66*66dfcc85SDavid van Moolenbroek } else {
67*66dfcc85SDavid van Moolenbroek warnx("BPF stats not available via KVM.");
68*66dfcc85SDavid van Moolenbroek }
69*66dfcc85SDavid van Moolenbroek }
70*66dfcc85SDavid van Moolenbroek
71*66dfcc85SDavid van Moolenbroek void
bpf_dump(const char * bpfif)72*66dfcc85SDavid van Moolenbroek bpf_dump(const char *bpfif)
73*66dfcc85SDavid van Moolenbroek {
74*66dfcc85SDavid van Moolenbroek struct bpf_d_ext *dpe;
75*66dfcc85SDavid van Moolenbroek
76*66dfcc85SDavid van Moolenbroek if (use_sysctl) {
77*66dfcc85SDavid van Moolenbroek int name[CTL_MAXNAME], rc;
78*66dfcc85SDavid van Moolenbroek size_t i, sz, szproc;
79*66dfcc85SDavid van Moolenbroek u_int namelen;
80*66dfcc85SDavid van Moolenbroek void *v;
81*66dfcc85SDavid van Moolenbroek struct kinfo_proc2 p;
82*66dfcc85SDavid van Moolenbroek
83*66dfcc85SDavid van Moolenbroek /* adapted from sockstat.c by Andrew Brown */
84*66dfcc85SDavid van Moolenbroek
85*66dfcc85SDavid van Moolenbroek sz = CTL_MAXNAME;
86*66dfcc85SDavid van Moolenbroek if (sysctlnametomib("net.bpf.peers", &name[0], &sz) == -1)
87*66dfcc85SDavid van Moolenbroek err(1, "sysctlnametomib: net.bpf.peers");
88*66dfcc85SDavid van Moolenbroek namelen = sz;
89*66dfcc85SDavid van Moolenbroek
90*66dfcc85SDavid van Moolenbroek name[namelen++] = sizeof(*dpe);
91*66dfcc85SDavid van Moolenbroek name[namelen++] = INT_MAX;
92*66dfcc85SDavid van Moolenbroek
93*66dfcc85SDavid van Moolenbroek v = NULL;
94*66dfcc85SDavid van Moolenbroek sz = 0;
95*66dfcc85SDavid van Moolenbroek do {
96*66dfcc85SDavid van Moolenbroek rc = prog_sysctl(&name[0], namelen,
97*66dfcc85SDavid van Moolenbroek v, &sz, NULL, 0);
98*66dfcc85SDavid van Moolenbroek if (rc == -1 && errno != ENOMEM)
99*66dfcc85SDavid van Moolenbroek err(1, "sysctl: net.bpf.peers");
100*66dfcc85SDavid van Moolenbroek if (rc == -1 && v != NULL) {
101*66dfcc85SDavid van Moolenbroek free(v);
102*66dfcc85SDavid van Moolenbroek v = NULL;
103*66dfcc85SDavid van Moolenbroek }
104*66dfcc85SDavid van Moolenbroek if (v == NULL) {
105*66dfcc85SDavid van Moolenbroek v = malloc(sz);
106*66dfcc85SDavid van Moolenbroek rc = -1;
107*66dfcc85SDavid van Moolenbroek }
108*66dfcc85SDavid van Moolenbroek if (v == NULL)
109*66dfcc85SDavid van Moolenbroek err(1, "malloc");
110*66dfcc85SDavid van Moolenbroek } while (rc == -1);
111*66dfcc85SDavid van Moolenbroek
112*66dfcc85SDavid van Moolenbroek dpe = v;
113*66dfcc85SDavid van Moolenbroek
114*66dfcc85SDavid van Moolenbroek puts("Active BPF peers\nPID\tInt\tRecv Drop Capt" \
115*66dfcc85SDavid van Moolenbroek " Flags Bufsize Comm");
116*66dfcc85SDavid van Moolenbroek
117*66dfcc85SDavid van Moolenbroek #define BPFEXT(entry) dpe->entry
118*66dfcc85SDavid van Moolenbroek
119*66dfcc85SDavid van Moolenbroek for (i = 0; i < (sz / sizeof(*dpe)); i++, dpe++) {
120*66dfcc85SDavid van Moolenbroek if (bpfif &&
121*66dfcc85SDavid van Moolenbroek strncmp(BPFEXT(bde_ifname), bpfif, IFNAMSIZ))
122*66dfcc85SDavid van Moolenbroek continue;
123*66dfcc85SDavid van Moolenbroek
124*66dfcc85SDavid van Moolenbroek printf("%-7d ", BPFEXT(bde_pid));
125*66dfcc85SDavid van Moolenbroek printf("%-7s ",
126*66dfcc85SDavid van Moolenbroek (BPFEXT(bde_ifname)[0] == '\0') ? "-" :
127*66dfcc85SDavid van Moolenbroek BPFEXT(bde_ifname));
128*66dfcc85SDavid van Moolenbroek
129*66dfcc85SDavid van Moolenbroek printf("%-8" PRIu64 " %-8" PRIu64 " %-8" PRIu64 " ",
130*66dfcc85SDavid van Moolenbroek BPFEXT(bde_rcount), BPFEXT(bde_dcount),
131*66dfcc85SDavid van Moolenbroek BPFEXT(bde_ccount));
132*66dfcc85SDavid van Moolenbroek
133*66dfcc85SDavid van Moolenbroek switch (BPFEXT(bde_state)) {
134*66dfcc85SDavid van Moolenbroek case BPF_IDLE:
135*66dfcc85SDavid van Moolenbroek printf("I");
136*66dfcc85SDavid van Moolenbroek break;
137*66dfcc85SDavid van Moolenbroek case BPF_WAITING:
138*66dfcc85SDavid van Moolenbroek printf("W");
139*66dfcc85SDavid van Moolenbroek break;
140*66dfcc85SDavid van Moolenbroek case BPF_TIMED_OUT:
141*66dfcc85SDavid van Moolenbroek printf("T");
142*66dfcc85SDavid van Moolenbroek break;
143*66dfcc85SDavid van Moolenbroek default:
144*66dfcc85SDavid van Moolenbroek printf("-");
145*66dfcc85SDavid van Moolenbroek break;
146*66dfcc85SDavid van Moolenbroek }
147*66dfcc85SDavid van Moolenbroek
148*66dfcc85SDavid van Moolenbroek printf("%c", BPFEXT(bde_promisc) ? 'P' : '-');
149*66dfcc85SDavid van Moolenbroek printf("%c", BPFEXT(bde_immediate) ? 'R' : '-');
150*66dfcc85SDavid van Moolenbroek printf("%c", BPFEXT(bde_seesent) ? 'S' : '-');
151*66dfcc85SDavid van Moolenbroek printf("%c", BPFEXT(bde_hdrcmplt) ? 'H' : '-');
152*66dfcc85SDavid van Moolenbroek printf(" %-8d ", BPFEXT(bde_bufsize));
153*66dfcc85SDavid van Moolenbroek
154*66dfcc85SDavid van Moolenbroek szproc = sizeof(p);
155*66dfcc85SDavid van Moolenbroek namelen = 0;
156*66dfcc85SDavid van Moolenbroek name[namelen++] = CTL_KERN;
157*66dfcc85SDavid van Moolenbroek name[namelen++] = KERN_PROC2;
158*66dfcc85SDavid van Moolenbroek name[namelen++] = KERN_PROC_PID;
159*66dfcc85SDavid van Moolenbroek name[namelen++] = BPFEXT(bde_pid);
160*66dfcc85SDavid van Moolenbroek name[namelen++] = szproc;
161*66dfcc85SDavid van Moolenbroek name[namelen++] = 1;
162*66dfcc85SDavid van Moolenbroek
163*66dfcc85SDavid van Moolenbroek if (prog_sysctl(&name[0], namelen, &p, &szproc,
164*66dfcc85SDavid van Moolenbroek NULL, 0) == -1)
165*66dfcc85SDavid van Moolenbroek printf("-\n");
166*66dfcc85SDavid van Moolenbroek else
167*66dfcc85SDavid van Moolenbroek printf("%s\n", p.p_comm);
168*66dfcc85SDavid van Moolenbroek #undef BPFEXT
169*66dfcc85SDavid van Moolenbroek }
170*66dfcc85SDavid van Moolenbroek free(v);
171*66dfcc85SDavid van Moolenbroek } else {
172*66dfcc85SDavid van Moolenbroek /* XXX */
173*66dfcc85SDavid van Moolenbroek errx(1, "bpf_dump not implemented using kvm");
174*66dfcc85SDavid van Moolenbroek }
175*66dfcc85SDavid van Moolenbroek }
176