2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 1989 Stephen Deering
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
8 * This code is derived from software contributed to Berkeley by
9 * Stephen Deering of Stanford University.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 #include <sys/cdefs.h>
42 * Print multicast routing structures and statistics.
47 #include <sys/param.h>
48 #include <sys/queue.h>
49 #include <sys/socket.h>
50 #include <sys/socketvar.h>
51 #include <sys/sysctl.h>
52 #include <sys/protosw.h>
57 #include <netinet/in.h>
58 #include <netinet/igmp.h>
59 #include <net/route.h>
62 #include <netinet/ip_mroute.h>
75 static void print_bw_meter(struct bw_meter *, int *);
76 static void print_mfc(struct mfc *, int, int *);
79 print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
81 char s1[256], s2[256], s3[256];
82 struct timeval now, end, delta;
84 gettimeofday(&now, NULL);
86 if (! *banner_printed) {
87 xo_open_list("bandwidth-meter");
88 xo_emit(" {T:Bandwidth Meters}\n");
89 xo_emit(" {T:/%-30s}", "Measured(Start|Packets|Bytes)");
90 xo_emit(" {T:/%s}", "Type");
91 xo_emit(" {T:/%-30s}", "Thresh(Interval|Packets|Bytes)");
92 xo_emit(" {T:Remain}");
97 xo_open_instance("bandwidth-meter");
99 /* The measured values */
100 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS) {
101 snprintf(s1, sizeof(s1), "%ju",
102 (uintmax_t)bw_meter->bm_measured.b_packets);
103 xo_emit("{e:measured-packets/%ju}",
104 (uintmax_t)bw_meter->bm_measured.b_packets);
107 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES) {
108 snprintf(s2, sizeof(s2), "%ju",
109 (uintmax_t)bw_meter->bm_measured.b_bytes);
110 xo_emit("{e:measured-bytes/%ju}",
111 (uintmax_t)bw_meter->bm_measured.b_bytes);
114 xo_emit(" {[:-30}{:start-time/%lu.%06lu}|{q:measured-packets/%s}"
115 "|{q:measured-bytes%s}{]:}",
116 (u_long)bw_meter->bm_start_time.tv_sec,
117 (u_long)bw_meter->bm_start_time.tv_usec, s1, s2);
119 /* The type of entry */
120 xo_emit(" {t:type/%-3s}", (bw_meter->bm_flags & BW_METER_GEQ) ? ">=" :
121 (bw_meter->bm_flags & BW_METER_LEQ) ? "<=" : "?");
123 /* The threshold values */
124 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS) {
125 snprintf(s1, sizeof(s1), "%ju",
126 (uintmax_t)bw_meter->bm_threshold.b_packets);
127 xo_emit("{e:threshold-packets/%ju}",
128 (uintmax_t)bw_meter->bm_threshold.b_packets);
131 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES) {
132 snprintf(s2, sizeof(s2), "%ju",
133 (uintmax_t)bw_meter->bm_threshold.b_bytes);
134 xo_emit("{e:threshold-bytes/%ju}",
135 (uintmax_t)bw_meter->bm_threshold.b_bytes);
139 xo_emit(" {[:-30}{:threshold-time/%lu.%06lu}|{q:threshold-packets/%s}"
140 "|{q:threshold-bytes%s}{]:}",
141 (u_long)bw_meter->bm_threshold.b_time.tv_sec,
142 (u_long)bw_meter->bm_threshold.b_time.tv_usec, s1, s2);
145 timeradd(&bw_meter->bm_start_time,
146 &bw_meter->bm_threshold.b_time, &end);
147 if (timercmp(&now, &end, <=)) {
148 timersub(&end, &now, &delta);
149 snprintf(s3, sizeof(s3), "%lu.%06lu",
150 (u_long)delta.tv_sec,
151 (u_long)delta.tv_usec);
154 timersub(&now, &end, &delta);
155 snprintf(s3, sizeof(s3), "-%lu.06%lu",
156 (u_long)delta.tv_sec,
157 (u_long)delta.tv_usec);
159 xo_emit(" {:remaining-time/%s}", s3);
161 xo_open_instance("bandwidth-meter");
167 print_mfc(struct mfc *m, int maxvif, int *banner_printed)
169 struct sockaddr_in sin;
170 struct sockaddr *sa = (struct sockaddr *)&sin;
171 struct bw_meter bw_meter, *bwm;
172 int bw_banner_printed;
176 bw_banner_printed = 0;
177 memset(&sin, 0, sizeof(sin));
178 sin.sin_len = sizeof(sin);
179 sin.sin_family = AF_INET;
181 if (! *banner_printed) {
182 xo_open_list("multicast-forwarding-entry");
183 xo_emit("\n{T:IPv4 Multicast Forwarding Table}\n"
184 " {T:Origin} {T:Group} "
185 " {T:Packets In-Vif} {T:Out-Vifs:Ttls}\n");
189 memcpy(&sin.sin_addr, &m->mfc_origin, sizeof(sin.sin_addr));
190 xo_emit(" {:origin-address/%-15.15s}", routename(sa, numeric_addr));
191 memcpy(&sin.sin_addr, &m->mfc_mcastgrp, sizeof(sin.sin_addr));
192 xo_emit(" {:group-address/%-15.15s}",
193 routename(sa, numeric_addr));
194 xo_emit(" {:sent-packets/%9lu}", m->mfc_pkt_cnt);
195 xo_emit(" {:parent/%3d} ", m->mfc_parent);
196 xo_open_list("vif-ttl");
197 for (vifi = 0; vifi <= maxvif; vifi++) {
198 if (m->mfc_ttls[vifi] > 0) {
199 xo_open_instance("vif-ttl");
200 xo_emit(" {k:vif/%u}:{:ttl/%u}", vifi,
202 xo_close_instance("vif-ttl");
205 xo_close_list("vif-ttl");
209 * XXX We break the rules and try to use KVM to read the
210 * bandwidth meters, they are not retrievable via sysctl yet.
212 bwm = m->mfc_bw_meter_leq;
213 while (bwm != NULL) {
214 error = kread((u_long)bwm, (char *)&bw_meter,
218 print_bw_meter(&bw_meter, &bw_banner_printed);
219 bwm = bw_meter.bm_mfc_next;
221 bwm = m->mfc_bw_meter_geq;
222 while (bwm != NULL) {
223 error = kread((u_long)bwm, (char *)&bw_meter,
227 print_bw_meter(&bw_meter, &bw_banner_printed);
228 bwm = bw_meter.bm_mfc_next;
231 xo_close_list("bandwidth-meter");
237 struct sockaddr_in sin;
238 struct sockaddr *sa = (struct sockaddr *)&sin;
239 struct vif viftable[MAXVIFS];
242 u_long pmfchashtbl, pmfctablesize, pviftbl;
244 int saved_numeric_addr;
248 saved_numeric_addr = numeric_addr;
251 memset(&sin, 0, sizeof(sin));
252 sin.sin_len = sizeof(sin);
253 sin.sin_family = AF_INET;
257 * The VIF table will move to hanging off the struct if_info for
258 * each IPv4 configured interface. Currently it is statically
259 * allocated, and retrieved either using KVM or an opaque SYSCTL.
261 * This can't happen until the API documented in multicast(4)
262 * is itself refactored. The historical reason why VIFs use
263 * a separate ifindex space is entirely due to the legacy
264 * capability of the MROUTING code to create IPIP tunnels on
265 * the fly to support DVMRP. When gif(4) became available, this
266 * functionality was deprecated, as PIM does not use it.
269 pmfchashtbl = pmfctablesize = pviftbl = 0;
271 len = sizeof(viftable);
273 if (sysctlbyname("net.inet.ip.viftable", viftable, &len, NULL,
275 xo_warn("sysctl: net.inet.ip.viftable");
279 pmfchashtbl = nl[N_MFCHASHTBL].n_value;
280 pmfctablesize = nl[N_MFCTABLESIZE].n_value;
281 pviftbl = nl[N_VIFTABLE].n_value;
283 if (pmfchashtbl == 0 || pmfctablesize == 0 || pviftbl == 0) {
284 xo_warnx("No IPv4 MROUTING kernel support.");
288 kread(pviftbl, (char *)viftable, sizeof(viftable));
292 for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) {
293 if (v->v_lcl_addr.s_addr == 0)
297 if (!banner_printed) {
298 xo_emit("\n{T:IPv4 Virtual Interface Table\n"
299 " Vif Thresh Local-Address "
300 "Remote-Address Pkts-In Pkts-Out}\n");
305 xo_open_instance("vif");
306 memcpy(&sin.sin_addr, &v->v_lcl_addr, sizeof(sin.sin_addr));
307 xo_emit(" {:vif/%2u} {:threshold/%6u} {:route/%-15.15s}",
308 /* opposite math of add_vif() */
309 vifi, v->v_threshold,
310 routename(sa, numeric_addr));
311 memcpy(&sin.sin_addr, &v->v_rmt_addr, sizeof(sin.sin_addr));
312 xo_emit(" {:source/%-15.15s}", (v->v_flags & VIFF_TUNNEL) ?
313 routename(sa, numeric_addr) : "");
315 xo_emit(" {:received-packets/%9lu} {:sent-packets/%9lu}\n",
316 v->v_pkt_in, v->v_pkt_out);
317 xo_close_instance("vif");
320 xo_close_list("vif");
322 xo_emit("\n{T:IPv4 Virtual Interface Table is empty}\n");
328 * The MFC table will move into the AF_INET radix trie in future.
329 * In 8.x, it becomes a dynamically allocated structure referenced
330 * by a hashed LIST, allowing more than 256 entries w/o kernel tuning.
332 * If retrieved via opaque SYSCTL, the kernel will coalesce it into
333 * a static table for us.
334 * If retrieved via KVM, the hash list pointers must be followed.
337 struct mfc *mfctable;
340 if (sysctlbyname("net.inet.ip.mfctable", NULL, &len, NULL,
342 xo_warn("sysctl: net.inet.ip.mfctable");
346 mfctable = malloc(len);
347 if (mfctable == NULL) {
348 xo_warnx("malloc %lu bytes", (u_long)len);
351 if (sysctlbyname("net.inet.ip.mfctable", mfctable, &len, NULL,
354 xo_warn("sysctl: net.inet.ip.mfctable");
359 while (len >= sizeof(*m)) {
360 print_mfc(m++, maxvif, &banner_printed);
364 xo_close_list("multicast-forwarding-entry");
366 xo_warnx("print_mfc: %lu trailing bytes", (u_long)len);
370 LIST_HEAD(, mfc) *mfchashtbl;
371 u_long i, mfctablesize;
375 error = kread(pmfctablesize, (char *)&mfctablesize,
378 xo_warn("kread: mfctablesize");
382 len = sizeof(*mfchashtbl) * mfctablesize;
383 mfchashtbl = malloc(len);
384 if (mfchashtbl == NULL) {
385 xo_warnx("malloc %lu bytes", (u_long)len);
388 kread(pmfchashtbl, (char *)&mfchashtbl, len);
390 for (i = 0; i < mfctablesize; i++) {
391 LIST_FOREACH(m, &mfchashtbl[i], mfc_hash) {
392 kread((u_long)m, (char *)&mfc, sizeof(mfc));
393 print_mfc(m, maxvif, &banner_printed);
397 xo_close_list("multicast-forwarding-entry");
403 xo_emit("\n{T:IPv4 Multicast Forwarding Table is empty}\n");
406 numeric_addr = saved_numeric_addr;
412 struct mrtstat mrtstat;
415 mstaddr = nl[N_MRTSTAT].n_value;
417 if (fetch_stats("net.inet.ip.mrtstat", mstaddr, &mrtstat,
418 sizeof(mrtstat), kread_counters) != 0) {
419 if ((live && errno == ENOENT) || (!live && mstaddr == 0))
420 fprintf(stderr, "No IPv4 MROUTING kernel support.\n");
424 xo_emit("{T:IPv4 multicast forwarding}:\n");
426 #define p(f, m) if (mrtstat.f || sflag <= 1) \
427 xo_emit(m, (uintmax_t)mrtstat.f, plural(mrtstat.f))
428 #define p2(f, m) if (mrtstat.f || sflag <= 1) \
429 xo_emit(m, (uintmax_t)mrtstat.f, plurales(mrtstat.f))
431 xo_open_container("multicast-statistics");
433 p(mrts_mfc_lookups, "\t{:cache-lookups/%ju} "
434 "{N:/multicast forwarding cache lookup%s}\n");
435 p2(mrts_mfc_misses, "\t{:cache-misses/%ju} "
436 "{N:/multicast forwarding cache miss%s}\n");
437 p(mrts_upcalls, "\t{:upcalls-total/%ju} "
438 "{N:/upcall%s to multicast routing daemon}\n");
439 p(mrts_upq_ovflw, "\t{:upcall-overflows/%ju} "
440 "{N:/upcall queue overflow%s}\n");
442 "\t{:upcalls-dropped-full-buffer/%ju} "
443 "{N:/upcall%s dropped due to full socket buffer}\n");
444 p(mrts_cache_cleanups, "\t{:cache-cleanups/%ju} "
445 "{N:/cache cleanup%s}\n");
446 p(mrts_no_route, "\t{:dropped-no-origin/%ju} "
447 "{N:/datagram%s with no route for origin}\n");
448 p(mrts_bad_tunnel, "\t{:dropped-bad-tunnel/%ju} "
449 "{N:/datagram%s arrived with bad tunneling}\n");
450 p(mrts_cant_tunnel, "\t{:dropped-could-not-tunnel/%ju} "
451 "{N:/datagram%s could not be tunneled}\n");
452 p(mrts_wrong_if, "\t{:dropped-wrong-incoming-interface/%ju} "
453 "{N:/datagram%s arrived on wrong interface}\n");
454 p(mrts_drop_sel, "\t{:dropped-selectively/%ju} "
455 "{N:/datagram%s selectively dropped}\n");
456 p(mrts_q_overflow, "\t{:dropped-queue-overflow/%ju} "
457 "{N:/datagram%s dropped due to queue overflow}\n");
458 p(mrts_pkt2large, "\t{:dropped-too-large/%ju} "
459 "{N:/datagram%s dropped for being too large}\n");