2 * Copyright (c) 1989 Stephen Deering
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Stephen Deering of Stanford University.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * @(#)mroute.c 8.2 (Berkeley) 4/28/95
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
44 * Print multicast routing structures and statistics.
49 #include <sys/param.h>
50 #include <sys/queue.h>
51 #include <sys/socket.h>
52 #include <sys/socketvar.h>
53 #include <sys/sysctl.h>
54 #include <sys/protosw.h>
59 #include <netinet/in.h>
60 #include <netinet/igmp.h>
61 #include <net/route.h>
62 #include <netinet/ip_mroute.h>
71 static void print_bw_meter(struct bw_meter *, int *);
72 static void print_mfc(struct mfc *, int, int *);
75 print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
77 char s0[256], s1[256], s2[256], s3[256];
78 struct timeval now, end, delta;
80 gettimeofday(&now, NULL);
82 if (! *banner_printed) {
83 printf(" Bandwidth Meters\n");
84 printf(" %-30s", "Measured(Start|Packets|Bytes)");
85 printf(" %s", "Type");
86 printf(" %-30s", "Thresh(Interval|Packets|Bytes)");
92 /* The measured values */
93 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
94 sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_measured.b_packets);
97 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
98 sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_measured.b_bytes);
101 sprintf(s0, "%lu.%lu|%s|%s",
102 (u_long)bw_meter->bm_start_time.tv_sec,
103 (u_long)bw_meter->bm_start_time.tv_usec,
105 printf(" %-30s", s0);
107 /* The type of entry */
108 sprintf(s0, "%s", "?");
109 if (bw_meter->bm_flags & BW_METER_GEQ)
110 sprintf(s0, "%s", ">=");
111 else if (bw_meter->bm_flags & BW_METER_LEQ)
112 sprintf(s0, "%s", "<=");
115 /* The threshold values */
116 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
117 sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_threshold.b_packets);
120 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
121 sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_threshold.b_bytes);
124 sprintf(s0, "%lu.%lu|%s|%s",
125 (u_long)bw_meter->bm_threshold.b_time.tv_sec,
126 (u_long)bw_meter->bm_threshold.b_time.tv_usec,
128 printf(" %-30s", s0);
131 timeradd(&bw_meter->bm_start_time,
132 &bw_meter->bm_threshold.b_time, &end);
133 if (timercmp(&now, &end, <=)) {
134 timersub(&end, &now, &delta);
135 sprintf(s3, "%lu.%lu",
136 (u_long)delta.tv_sec,
137 (u_long)delta.tv_usec);
140 timersub(&now, &end, &delta);
141 sprintf(s3, "-%lu.%lu",
142 (u_long)delta.tv_sec,
143 (u_long)delta.tv_usec);
151 print_mfc(struct mfc *m, int maxvif, int *banner_printed)
153 struct bw_meter bw_meter, *bwm;
154 int bw_banner_printed;
158 bw_banner_printed = 0;
160 if (! *banner_printed) {
161 printf("\nIPv4 Multicast Forwarding Table\n"
163 " Packets In-Vif Out-Vifs:Ttls\n");
167 printf(" %-15.15s", routename(m->mfc_origin.s_addr));
168 printf(" %-15.15s", routename(m->mfc_mcastgrp.s_addr));
169 printf(" %9lu", m->mfc_pkt_cnt);
170 printf(" %3d ", m->mfc_parent);
171 for (vifi = 0; vifi <= maxvif; vifi++) {
172 if (m->mfc_ttls[vifi] > 0)
173 printf(" %u:%u", vifi, m->mfc_ttls[vifi]);
178 * XXX We break the rules and try to use KVM to read the
179 * bandwidth meters, they are not retrievable via sysctl yet.
181 bwm = m->mfc_bw_meter;
182 while (bwm != NULL) {
183 error = kread((u_long)bwm, (char *)&bw_meter,
187 print_bw_meter(&bw_meter, &bw_banner_printed);
188 bwm = bw_meter.bm_mfc_next;
193 mroutepr(u_long pmfchashtbl, u_long pmfctablesize, u_long pviftbl)
195 struct vif viftable[MAXVIFS];
199 int saved_numeric_addr;
203 saved_numeric_addr = numeric_addr;
208 * The VIF table will move to hanging off the struct if_info for
209 * each IPv4 configured interface. Currently it is statically
210 * allocated, and retrieved either using KVM or an opaque SYSCTL.
212 * This can't happen until the API documented in multicast(4)
213 * is itself refactored. The historical reason why VIFs use
214 * a separate ifindex space is entirely due to the legacy
215 * capability of the MROUTING code to create IPIP tunnels on
216 * the fly to support DVMRP. When gif(4) became available, this
217 * functionality was deprecated, as PIM does not use it.
221 len = sizeof(viftable);
223 if (sysctlbyname("net.inet.ip.viftable", viftable, &len, NULL,
225 warn("sysctl: net.inet.ip.viftable");
229 kread(pviftbl, (char *)viftable, sizeof(viftable));
232 for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) {
233 if (v->v_lcl_addr.s_addr == 0)
237 if (!banner_printed) {
238 printf("\nIPv4 Virtual Interface Table\n"
239 " Vif Thresh Local-Address "
240 "Remote-Address Pkts-In Pkts-Out\n");
244 printf(" %2u %6u %-15.15s",
245 /* opposite math of add_vif() */
246 vifi, v->v_threshold,
247 routename(v->v_lcl_addr.s_addr));
248 printf(" %-15.15s", (v->v_flags & VIFF_TUNNEL) ?
249 routename(v->v_rmt_addr.s_addr) : "");
251 printf(" %9lu %9lu\n", v->v_pkt_in, v->v_pkt_out);
254 printf("\nIPv4 Virtual Interface Table is empty\n");
260 * The MFC table will move into the AF_INET radix trie in future.
261 * In 8.x, it becomes a dynamically allocated structure referenced
262 * by a hashed LIST, allowing more than 256 entries w/o kernel tuning.
264 * If retrieved via opaque SYSCTL, the kernel will coalesce it into
265 * a static table for us.
266 * If retrieved via KVM, the hash list pointers must be followed.
269 struct mfc *mfctable;
272 if (sysctlbyname("net.inet.ip.mfctable", NULL, &len, NULL,
274 warn("sysctl: net.inet.ip.mfctable");
278 mfctable = malloc(len);
279 if (mfctable == NULL) {
280 warnx("malloc %lu bytes", (u_long)len);
283 if (sysctlbyname("net.inet.ip.mfctable", mfctable, &len, NULL,
286 warn("sysctl: net.inet.ip.mfctable");
291 while (len >= sizeof(*m)) {
292 print_mfc(m++, maxvif, &banner_printed);
296 warnx("print_mfc: %lu trailing bytes", (u_long)len);
300 LIST_HEAD(, mfc) *mfchashtbl;
301 u_long i, mfctablesize;
305 error = kread(pmfctablesize, (char *)&mfctablesize,
308 warn("kread: mfctablesize");
312 len = sizeof(*mfchashtbl) * mfctablesize;
313 mfchashtbl = malloc(len);
314 if (mfchashtbl == NULL) {
315 warnx("malloc %lu bytes", (u_long)len);
318 kread(pmfchashtbl, (char *)&mfchashtbl, len);
320 for (i = 0; i < mfctablesize; i++) {
321 LIST_FOREACH(m, &mfchashtbl[i], mfc_hash) {
322 kread((u_long)m, (char *)&mfc, sizeof(mfc));
323 print_mfc(m, maxvif, &banner_printed);
331 printf("\nIPv4 Multicast Forwarding Table is empty\n");
334 numeric_addr = saved_numeric_addr;
338 mrt_stats(u_long mstaddr)
340 struct mrtstat mrtstat;
341 size_t len = sizeof mrtstat;
344 if (sysctlbyname("net.inet.ip.mrtstat", &mrtstat, &len, NULL,
346 warn("sysctl: net.inet.ip.mrtstat");
350 kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat));
352 printf("IPv4 multicast forwarding:\n");
354 #define p(f, m) if (mrtstat.f || sflag <= 1) \
355 printf(m, mrtstat.f, plural(mrtstat.f))
356 #define p2(f, m) if (mrtstat.f || sflag <= 1) \
357 printf(m, mrtstat.f, plurales(mrtstat.f))
359 p(mrts_mfc_lookups, "\t%lu multicast forwarding cache lookup%s\n");
360 p2(mrts_mfc_misses, "\t%lu multicast forwarding cache miss%s\n");
361 p(mrts_upcalls, "\t%lu upcall%s to multicast routing daemon\n");
362 p(mrts_upq_ovflw, "\t%lu upcall queue overflow%s\n");
364 "\t%lu upcall%s dropped due to full socket buffer\n");
365 p(mrts_cache_cleanups, "\t%lu cache cleanup%s\n");
366 p(mrts_no_route, "\t%lu datagram%s with no route for origin\n");
367 p(mrts_bad_tunnel, "\t%lu datagram%s arrived with bad tunneling\n");
368 p(mrts_cant_tunnel, "\t%lu datagram%s could not be tunneled\n");
369 p(mrts_wrong_if, "\t%lu datagram%s arrived on wrong interface\n");
370 p(mrts_drop_sel, "\t%lu datagram%s selectively dropped\n");
371 p(mrts_q_overflow, "\t%lu datagram%s dropped due to queue overflow\n");
372 p(mrts_pkt2large, "\t%lu datagram%s dropped for being too large\n");