network code: Convert if_multiaddrs from LIST to TAILQ.
[dragonfly.git] / usr.sbin / ifmcstat / ifmcstat.c
CommitLineData
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1/*
2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the project nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: src/usr.sbin/ifmcstat/ifmcstat.c,v 1.3.2.2 2001/07/03 11:02:06 ume Exp $
b2632176 30 * $DragonFly: src/usr.sbin/ifmcstat/ifmcstat.c,v 1.9 2008/03/07 11:34:21 sephe Exp $
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31 */
32
cc970022
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33#define _KERNEL_STRUCTURES
34
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35#include <stdio.h>
36#include <stdlib.h>
37#include <fcntl.h>
38#include <kvm.h>
39#include <nlist.h>
40#include <string.h>
41#include <limits.h>
42
43#include <sys/types.h>
44#include <sys/socket.h>
45#include <sys/queue.h>
46
47#include <net/if.h>
48#include <net/if_var.h>
49#include <net/if_types.h>
50#include <net/if_dl.h>
51#include <netinet/in.h>
984263bc 52#include <netinet/if_ether.h>
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53#include <netinet/in_var.h>
54#include <arpa/inet.h>
55
56#include <netdb.h>
57
58kvm_t *kvmd;
59
60struct nlist nl[] = {
61#define N_IFNET 0
62 { "_ifnet" },
63 { "" },
64};
65
2d8a3be7 66const char *inet6_n2a(struct in6_addr *);
68da13b1 67int main(int, char **);
2d8a3be7
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68char *ifname(struct ifnet *);
69void kread(u_long, void *, int);
b2632176 70void if6_addrlist(struct ifaddr_container *);
2d8a3be7
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71void in6_multilist(struct in6_multi *);
72struct in6_multi * in6_multientry(struct in6_multi *);
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73
74#define KREAD(addr, buf, type) \
75 kread((u_long)addr, (void *)buf, sizeof(type))
76
77#ifdef N_IN6_MK
78struct multi6_kludge {
79 LIST_ENTRY(multi6_kludge) mk_entry;
80 struct ifnet *mk_ifp;
81 struct in6_multihead mk_head;
82};
83#endif
84
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85const char *
86inet6_n2a(struct in6_addr *p)
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87{
88 static char buf[NI_MAXHOST];
89 struct sockaddr_in6 sin6;
90 u_int32_t scopeid;
91#ifdef NI_WITHSCOPEID
92 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID;
93#else
94 const int niflags = NI_NUMERICHOST;
95#endif
96
97 memset(&sin6, 0, sizeof(sin6));
98 sin6.sin6_family = AF_INET6;
99 sin6.sin6_len = sizeof(struct sockaddr_in6);
100 sin6.sin6_addr = *p;
101 if (IN6_IS_ADDR_LINKLOCAL(p) || IN6_IS_ADDR_MC_LINKLOCAL(p)) {
102 scopeid = ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
103 if (scopeid) {
104 sin6.sin6_scope_id = scopeid;
105 sin6.sin6_addr.s6_addr[2] = 0;
106 sin6.sin6_addr.s6_addr[3] = 0;
107 }
108 }
109 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
110 buf, sizeof(buf), NULL, 0, niflags) == 0)
111 return buf;
112 else
113 return "(invalid)";
114}
115
68da13b1
EN
116int
117main(int argc __unused, char **argv __unused)
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118{
119 char buf[_POSIX2_LINE_MAX], ifname[IFNAMSIZ];
120 struct ifnet *ifp, *nifp, ifnet;
121 struct arpcom arpcom;
122
123 if ((kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, buf)) == NULL) {
124 perror("kvm_openfiles");
125 exit(1);
126 }
127 if (kvm_nlist(kvmd, nl) < 0) {
128 perror("kvm_nlist");
129 exit(1);
130 }
131 if (nl[N_IFNET].n_value == 0) {
132 printf("symbol %s not found\n", nl[N_IFNET].n_name);
133 exit(1);
134 }
135 KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *);
136 while (ifp) {
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137 struct ifaddrhead head;
138 struct ifaddr_container ifac, *ifacp = NULL;
139
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140 KREAD(ifp, &ifnet, struct ifnet);
141 printf("%s:\n", if_indextoname(ifnet.if_index, ifname));
142
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143 KREAD(ifnet.if_addrheads, &head, struct ifaddrhead);
144 if (TAILQ_FIRST(&head) != NULL) {
145 KREAD(TAILQ_FIRST(&head), &ifac,
146 struct ifaddr_container);
147 ifacp = &ifac;
148 }
149
150 if6_addrlist(ifacp);
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151 nifp = ifnet.if_link.tqe_next;
152
153 /* not supported */
154
155 ifp = nifp;
156 }
157
158 exit(0);
159 /*NOTREACHED*/
160}
161
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162char *
163ifname(struct ifnet *ifp)
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164{
165 static char buf[BUFSIZ];
166 struct ifnet ifnet;
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167
168 KREAD(ifp, &ifnet, struct ifnet);
3e4a09e7 169 strlcpy(buf, ifnet.if_xname, sizeof(buf));
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170 return buf;
171}
172
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173void
174kread(u_long addr, void *buf, int len)
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175{
176 if (kvm_read(kvmd, addr, buf, len) != len) {
177 perror("kvm_read");
178 exit(1);
179 }
180}
181
182void
b2632176 183if6_addrlist(struct ifaddr_container *ifac)
984263bc 184{
b2632176 185 struct ifaddr *ifap;
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186 struct ifaddr ifa;
187 struct sockaddr sa;
188 struct in6_ifaddr if6a;
189 struct in6_multi *mc = 0;
190 struct ifaddr *ifap0;
191
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192 if (ifac != NULL)
193 ifap = ifac->ifa;
194 else
195 ifap = NULL;
196
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197 ifap0 = ifap;
198 while (ifap) {
199 KREAD(ifap, &ifa, struct ifaddr);
200 if (ifa.ifa_addr == NULL)
201 goto nextifap;
202 KREAD(ifa.ifa_addr, &sa, struct sockaddr);
203 if (sa.sa_family != PF_INET6)
204 goto nextifap;
205 KREAD(ifap, &if6a, struct in6_ifaddr);
206 printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr));
207 nextifap:
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208 if (TAILQ_NEXT(ifac, ifa_link) == NULL) {
209 ifap = NULL;
210 } else {
211 KREAD(TAILQ_NEXT(ifac, ifa_link), ifac,
212 struct ifaddr_container);
213 ifap = ifac->ifa;
214 }
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215 }
216 if (ifap0) {
217 struct ifnet ifnet;
218 struct ifmultiaddr ifm, *ifmp = 0;
219 struct sockaddr_in6 sin6;
220 struct in6_multi in6m;
221 struct sockaddr_dl sdl;
222 int in6_multilist_done = 0;
223
224 KREAD(ifap0, &ifa, struct ifaddr);
225 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
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226 if (TAILQ_FIRST(&ifnet.if_multiaddrs))
227 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
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228 while (ifmp) {
229 KREAD(ifmp, &ifm, struct ifmultiaddr);
230 if (ifm.ifma_addr == NULL)
231 goto nextmulti;
232 KREAD(ifm.ifma_addr, &sa, struct sockaddr);
233 if (sa.sa_family != AF_INET6)
234 goto nextmulti;
71126e33 235 in6_multientry((struct in6_multi *)ifm.ifma_protospec);
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236 if (ifm.ifma_lladdr == 0)
237 goto nextmulti;
238 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
239 printf("\t\t\tmcast-macaddr %s multicnt %d\n",
240 ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
241 ifm.ifma_refcount);
242 nextmulti:
441d34b2 243 ifmp = TAILQ_NEXT(&ifm, ifma_link);
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244 }
245 }
246#ifdef N_IN6_MK
247 if (nl[N_IN6_MK].n_value != 0) {
248 LIST_HEAD(in6_mktype, multi6_kludge) in6_mk;
249 struct multi6_kludge *mkp, mk;
250 char *nam;
251
252 KREAD(nl[N_IN6_MK].n_value, &in6_mk, struct in6_mktype);
253 KREAD(ifap0, &ifa, struct ifaddr);
254
255 nam = strdup(ifname(ifa.ifa_ifp));
256 if (!nam) {
257 fprintf(stderr, "ifmcstat: not enough core\n");
258 exit(1);
259 }
260
261 for (mkp = in6_mk.lh_first; mkp; mkp = mk.mk_entry.le_next) {
262 KREAD(mkp, &mk, struct multi6_kludge);
263 if (strcmp(nam, ifname(mk.mk_ifp)) == 0 &&
264 mk.mk_head.lh_first) {
265 printf("\t(on kludge entry for %s)\n", nam);
266 in6_multilist(mk.mk_head.lh_first);
267 }
268 }
269
270 free(nam);
271 }
272#endif
273}
274
275struct in6_multi *
68da13b1 276in6_multientry(struct in6_multi *mc)
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277{
278 struct in6_multi multi;
279
280 KREAD(mc, &multi, struct in6_multi);
281 printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr));
282 printf(" refcnt %u\n", multi.in6m_refcount);
283 return(multi.in6m_entry.le_next);
284}
285
286void
68da13b1 287in6_multilist(struct in6_multi *mc)
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288{
289 while (mc)
290 mc = in6_multientry(mc);
291}