1 /* $OpenBSD: mroute6.c,v 1.25 2021/12/05 22:36:19 deraadt Exp $ */
2
3 /*
4 * Copyright (C) 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1989 Stephen Deering
34 * Copyright (c) 1992, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * This code is derived from software contributed to Berkeley by
38 * Stephen Deering of Stanford University.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 * 1. Redistributions of source code must retain the above copyright
44 * notice, this list of conditions and the following disclaimer.
45 * 2. Redistributions in binary form must reproduce the above copyright
46 * notice, this list of conditions and the following disclaimer in the
47 * documentation and/or other materials provided with the distribution.
48 * 3. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 * SUCH DAMAGE.
63 *
64 * @(#)mroute.c 8.2 (Berkeley) 4/28/95
65 */
66
67 #include <sys/types.h>
68 #include <sys/socket.h>
69 #include <sys/sysctl.h>
70
71 #include <net/if.h>
72 #include <netinet/in.h>
73 #include <netinet6/ip6_mroute.h>
74
75 #include <err.h>
76 #include <errno.h>
77 #include <stdio.h>
78 #include <stdlib.h>
79 #include <util.h>
80 #include "netstat.h"
81
82 #define WID_ORG (lflag ? 39 : (nflag ? 29 : 18)) /* width of origin column */
83 #define WID_GRP (lflag ? 18 : (nflag ? 16 : 18)) /* width of group column */
84
85 void
mroute6pr(void)86 mroute6pr(void)
87 {
88 char *buf = NULL;
89 char fmtbuf[FMT_SCALED_STRSIZE];
90 struct mf6cinfo *mfc;
91 struct mif6info *mif;
92 size_t needed, mifi, nummifs, mfci, nummfcs;
93 int banner_printed, saved_nflag;
94 u_int mrtproto;
95 int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_MRTPROTO };
96 size_t len = sizeof(int);
97
98 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
99 &mrtproto, &len, NULL, 0) == -1) {
100 if (errno != ENOPROTOOPT)
101 warn("mroute");
102 return;
103 }
104 switch (mrtproto) {
105 case 0:
106 break;
107 default:
108 printf("IPv6 multicast routing protocol %u, unknown\n",
109 mrtproto);
110 return;
111 }
112
113 saved_nflag = nflag;
114 nflag = 1;
115
116 mib[3] = IPV6CTL_MRTMIF;
117 needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf);
118 nummifs = needed / sizeof(*mif);
119 mif = (struct mif6info *)buf;
120
121 banner_printed = 0;
122 for (mifi = 0; mifi < nummifs; ++mifi, ++mif) {
123 char ifname[IFNAMSIZ];
124
125 if (mif->m6_ifindex == 0)
126 continue;
127
128 if (!banner_printed) {
129 printf("\nIPv6 Multicast Interface Table\n"
130 " Mif Rate PhyIF "
131 "Pkts-In Pkts-Out\n");
132 banner_printed = 1;
133 }
134
135 printf(" %2u %4d",
136 mif->m6_mifi, mif->m6_rate_limit);
137 printf(" %5s", (mif->m6_flags & MIFF_REGISTER) ?
138 "reg0" : if_indextoname(mif->m6_ifindex, ifname));
139
140 printf(" %9llu %9llu\n", mif->m6_pkt_in, mif->m6_pkt_out);
141 }
142 if (!banner_printed)
143 printf("IPv6 Multicast Interface Table is empty\n");
144
145 mib[3] = IPV6CTL_MRTMFC;
146 needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf);
147 nummfcs = needed / sizeof(*mfc);
148 mfc = (struct mf6cinfo *)buf;
149
150 banner_printed = 0;
151 for (mfci = 0; mfci < nummfcs; ++mfci, ++mfc) {
152 if (!banner_printed) {
153 printf("\nIPv6 Multicast Forwarding Cache\n");
154 printf(" %-*.*s %-*.*s %s",
155 WID_ORG, WID_ORG, "Origin",
156 WID_GRP, WID_GRP, "Group",
157 " Packets Waits In-Mif Out-Mifs\n");
158 banner_printed = 1;
159 }
160
161 printf(" %-*.*s", WID_ORG, WID_ORG,
162 routename6(&mfc->mf6c_origin));
163 printf(" %-*.*s", WID_GRP, WID_GRP,
164 routename6(&mfc->mf6c_mcastgrp));
165 fmt_scaled(mfc->mf6c_pkt_cnt, fmtbuf);
166 printf(" %9s", fmtbuf);
167
168 printf(" %3llu", mfc->mf6c_stall_cnt);
169
170 if (mfc->mf6c_parent == MF6C_INCOMPLETE_PARENT)
171 printf(" --- ");
172 else
173 printf(" %3d ", mfc->mf6c_parent);
174 for (mifi = 0; mifi <= MAXMIFS; mifi++) {
175 if (IF_ISSET(mifi, &mfc->mf6c_ifset))
176 printf(" %zu", mifi);
177 }
178 printf("\n");
179 }
180 if (!banner_printed)
181 printf("IPv6 Multicast Routing Table is empty");
182
183 printf("\n");
184 nflag = saved_nflag;
185
186 free(buf);
187 }
188
189 void
mrt6_stats(void)190 mrt6_stats(void)
191 {
192 struct mrt6stat mrt6stat;
193 u_int mrt6proto;
194 int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_MRTPROTO };
195 int mib2[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_MRTSTATS };
196 size_t len = sizeof(int);
197
198 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
199 &mrt6proto, &len, NULL, 0) == -1) {
200 if (errno != ENOPROTOOPT)
201 warn("mroute");
202 return;
203 }
204 switch (mrt6proto) {
205 case 0:
206 printf("no IPv6 multicast routing compiled into this system\n");
207 return;
208 default:
209 printf("IPv6 multicast routing protocol %u, unknown\n",
210 mrt6proto);
211 return;
212 }
213
214 len = sizeof(mrt6stat);
215 if (sysctl(mib2, sizeof(mib2) / sizeof(mib2[0]),
216 &mrt6stat, &len, NULL, 0) == -1) {
217 if (errno != ENOPROTOOPT)
218 warn("mroute");
219 return;
220 }
221
222 printf("multicast forwarding:\n");
223 printf("\t%llu multicast forwarding cache lookup%s\n",
224 mrt6stat.mrt6s_mfc_lookups, plural(mrt6stat.mrt6s_mfc_lookups));
225 printf("\t%llu multicast forwarding cache miss%s\n",
226 mrt6stat.mrt6s_mfc_misses, plurales(mrt6stat.mrt6s_mfc_misses));
227 printf("\t%llu upcall%s to mrouted\n",
228 mrt6stat.mrt6s_upcalls, plural(mrt6stat.mrt6s_upcalls));
229 printf("\t%llu upcall queue overflow%s\n",
230 mrt6stat.mrt6s_upq_ovflw, plural(mrt6stat.mrt6s_upq_ovflw));
231 printf("\t%llu upcall%s dropped due to full socket buffer\n",
232 mrt6stat.mrt6s_upq_sockfull, plural(mrt6stat.mrt6s_upq_sockfull));
233 printf("\t%llu cache cleanup%s\n",
234 mrt6stat.mrt6s_cache_cleanups, plural(mrt6stat.mrt6s_cache_cleanups));
235 printf("\t%llu datagram%s with no route for origin\n",
236 mrt6stat.mrt6s_no_route, plural(mrt6stat.mrt6s_no_route));
237 printf("\t%llu datagram%s arrived with bad tunneling\n",
238 mrt6stat.mrt6s_bad_tunnel, plural(mrt6stat.mrt6s_bad_tunnel));
239 printf("\t%llu datagram%s could not be tunneled\n",
240 mrt6stat.mrt6s_cant_tunnel, plural(mrt6stat.mrt6s_cant_tunnel));
241 printf("\t%llu datagram%s arrived on wrong interface\n",
242 mrt6stat.mrt6s_wrong_if, plural(mrt6stat.mrt6s_wrong_if));
243 printf("\t%llu datagram%s selectively dropped\n",
244 mrt6stat.mrt6s_drop_sel, plural(mrt6stat.mrt6s_drop_sel));
245 printf("\t%llu datagram%s dropped due to queue overflow\n",
246 mrt6stat.mrt6s_q_overflow, plural(mrt6stat.mrt6s_q_overflow));
247 printf("\t%llu datagram%s dropped for being too large\n",
248 mrt6stat.mrt6s_pkt2large, plural(mrt6stat.mrt6s_pkt2large));
249 }
250