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>
64 #include <netinet/ip_mroute.h>
74 static void print_bw_meter(struct bw_meter *, int *);
75 static void print_mfc(struct mfc *, int, int *);
78 print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
80 char s0[256], s1[256], s2[256], s3[256];
81 struct timeval now, end, delta;
83 gettimeofday(&now, NULL);
85 if (! *banner_printed) {
86 printf(" Bandwidth Meters\n");
87 printf(" %-30s", "Measured(Start|Packets|Bytes)");
88 printf(" %s", "Type");
89 printf(" %-30s", "Thresh(Interval|Packets|Bytes)");
95 /* The measured values */
96 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
97 sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_measured.b_packets);
100 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
101 sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_measured.b_bytes);
104 sprintf(s0, "%lu.%lu|%s|%s",
105 (u_long)bw_meter->bm_start_time.tv_sec,
106 (u_long)bw_meter->bm_start_time.tv_usec,
108 printf(" %-30s", s0);
110 /* The type of entry */
111 sprintf(s0, "%s", "?");
112 if (bw_meter->bm_flags & BW_METER_GEQ)
113 sprintf(s0, "%s", ">=");
114 else if (bw_meter->bm_flags & BW_METER_LEQ)
115 sprintf(s0, "%s", "<=");
118 /* The threshold values */
119 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
120 sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_threshold.b_packets);
123 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
124 sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_threshold.b_bytes);
127 sprintf(s0, "%lu.%lu|%s|%s",
128 (u_long)bw_meter->bm_threshold.b_time.tv_sec,
129 (u_long)bw_meter->bm_threshold.b_time.tv_usec,
131 printf(" %-30s", s0);
134 timeradd(&bw_meter->bm_start_time,
135 &bw_meter->bm_threshold.b_time, &end);
136 if (timercmp(&now, &end, <=)) {
137 timersub(&end, &now, &delta);
138 sprintf(s3, "%lu.%lu",
139 (u_long)delta.tv_sec,
140 (u_long)delta.tv_usec);
143 timersub(&now, &end, &delta);
144 sprintf(s3, "-%lu.%lu",
145 (u_long)delta.tv_sec,
146 (u_long)delta.tv_usec);
154 print_mfc(struct mfc *m, int maxvif, int *banner_printed)
156 struct bw_meter bw_meter, *bwm;
157 int bw_banner_printed;
161 bw_banner_printed = 0;
163 if (! *banner_printed) {
164 printf("\nIPv4 Multicast Forwarding Table\n"
166 " Packets In-Vif Out-Vifs:Ttls\n");
170 printf(" %-15.15s", routename(m->mfc_origin.s_addr));
171 printf(" %-15.15s", routename(m->mfc_mcastgrp.s_addr));
172 printf(" %9lu", m->mfc_pkt_cnt);
173 printf(" %3d ", m->mfc_parent);
174 for (vifi = 0; vifi <= maxvif; vifi++) {
175 if (m->mfc_ttls[vifi] > 0)
176 printf(" %u:%u", vifi, m->mfc_ttls[vifi]);
181 * XXX We break the rules and try to use KVM to read the
182 * bandwidth meters, they are not retrievable via sysctl yet.
184 bwm = m->mfc_bw_meter;
185 while (bwm != NULL) {
186 error = kread((u_long)bwm, (char *)&bw_meter,
190 print_bw_meter(&bw_meter, &bw_banner_printed);
191 bwm = bw_meter.bm_mfc_next;
196 mroutepr(u_long pmfchashtbl, u_long pmfctablesize, u_long pviftbl)
198 struct vif viftable[MAXVIFS];
202 int saved_numeric_addr;
206 saved_numeric_addr = numeric_addr;
211 * The VIF table will move to hanging off the struct if_info for
212 * each IPv4 configured interface. Currently it is statically
213 * allocated, and retrieved either using KVM or an opaque SYSCTL.
215 * This can't happen until the API documented in multicast(4)
216 * is itself refactored. The historical reason why VIFs use
217 * a separate ifindex space is entirely due to the legacy
218 * capability of the MROUTING code to create IPIP tunnels on
219 * the fly to support DVMRP. When gif(4) became available, this
220 * functionality was deprecated, as PIM does not use it.
224 len = sizeof(viftable);
226 if (sysctlbyname("net.inet.ip.viftable", viftable, &len, NULL,
228 warn("sysctl: net.inet.ip.viftable");
232 kread(pviftbl, (char *)viftable, sizeof(viftable));
235 for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) {
236 if (v->v_lcl_addr.s_addr == 0)
240 if (!banner_printed) {
241 printf("\nIPv4 Virtual Interface Table\n"
242 " Vif Thresh Local-Address "
243 "Remote-Address Pkts-In Pkts-Out\n");
247 printf(" %2u %6u %-15.15s",
248 /* opposite math of add_vif() */
249 vifi, v->v_threshold,
250 routename(v->v_lcl_addr.s_addr));
251 printf(" %-15.15s", (v->v_flags & VIFF_TUNNEL) ?
252 routename(v->v_rmt_addr.s_addr) : "");
254 printf(" %9lu %9lu\n", v->v_pkt_in, v->v_pkt_out);
257 printf("\nIPv4 Virtual Interface Table is empty\n");
263 * The MFC table will move into the AF_INET radix trie in future.
264 * In 8.x, it becomes a dynamically allocated structure referenced
265 * by a hashed LIST, allowing more than 256 entries w/o kernel tuning.
267 * If retrieved via opaque SYSCTL, the kernel will coalesce it into
268 * a static table for us.
269 * If retrieved via KVM, the hash list pointers must be followed.
272 struct mfc *mfctable;
275 if (sysctlbyname("net.inet.ip.mfctable", NULL, &len, NULL,
277 warn("sysctl: net.inet.ip.mfctable");
281 mfctable = malloc(len);
282 if (mfctable == NULL) {
283 warnx("malloc %lu bytes", (u_long)len);
286 if (sysctlbyname("net.inet.ip.mfctable", mfctable, &len, NULL,
289 warn("sysctl: net.inet.ip.mfctable");
294 while (len >= sizeof(*m)) {
295 print_mfc(m++, maxvif, &banner_printed);
299 warnx("print_mfc: %lu trailing bytes", (u_long)len);
303 LIST_HEAD(, mfc) *mfchashtbl;
304 u_long i, mfctablesize;
308 error = kread(pmfctablesize, (char *)&mfctablesize,
311 warn("kread: mfctablesize");
315 len = sizeof(*mfchashtbl) * mfctablesize;
316 mfchashtbl = malloc(len);
317 if (mfchashtbl == NULL) {
318 warnx("malloc %lu bytes", (u_long)len);
321 kread(pmfchashtbl, (char *)&mfchashtbl, len);
323 for (i = 0; i < mfctablesize; i++) {
324 LIST_FOREACH(m, &mfchashtbl[i], mfc_hash) {
325 kread((u_long)m, (char *)&mfc, sizeof(mfc));
326 print_mfc(m, maxvif, &banner_printed);
334 printf("\nIPv4 Multicast Forwarding Table is empty\n");
337 numeric_addr = saved_numeric_addr;
341 mrt_stats(u_long mstaddr)
343 struct mrtstat mrtstat;
344 size_t len = sizeof mrtstat;
347 if (sysctlbyname("net.inet.ip.mrtstat", &mrtstat, &len, NULL,
349 warn("sysctl: net.inet.ip.mrtstat");
353 kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat));
355 printf("IPv4 multicast forwarding:\n");
357 #define p(f, m) if (mrtstat.f || sflag <= 1) \
358 printf(m, mrtstat.f, plural(mrtstat.f))
359 #define p2(f, m) if (mrtstat.f || sflag <= 1) \
360 printf(m, mrtstat.f, plurales(mrtstat.f))
362 p(mrts_mfc_lookups, "\t%lu multicast forwarding cache lookup%s\n");
363 p2(mrts_mfc_misses, "\t%lu multicast forwarding cache miss%s\n");
364 p(mrts_upcalls, "\t%lu upcall%s to multicast routing daemon\n");
365 p(mrts_upq_ovflw, "\t%lu upcall queue overflow%s\n");
367 "\t%lu upcall%s dropped due to full socket buffer\n");
368 p(mrts_cache_cleanups, "\t%lu cache cleanup%s\n");
369 p(mrts_no_route, "\t%lu datagram%s with no route for origin\n");
370 p(mrts_bad_tunnel, "\t%lu datagram%s arrived with bad tunneling\n");
371 p(mrts_cant_tunnel, "\t%lu datagram%s could not be tunneled\n");
372 p(mrts_wrong_if, "\t%lu datagram%s arrived on wrong interface\n");
373 p(mrts_drop_sel, "\t%lu datagram%s selectively dropped\n");
374 p(mrts_q_overflow, "\t%lu datagram%s dropped due to queue overflow\n");
375 p(mrts_pkt2large, "\t%lu datagram%s dropped for being too large\n");