1 /* $KAME: rtsock.c,v 1.3 2000/10/10 08:46:45 itojun Exp $ */
5 * Copyright (C) 2000 WIDE Project.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/param.h>
34 #include <sys/socket.h>
37 #include <sys/queue.h>
40 #include <net/route.h>
41 #include <net/if_dl.h>
43 #include <netinet/in.h>
44 #include <netinet/ip6.h>
45 #include <netinet/icmp6.h>
58 #define ROUNDUP(a, size) \
59 (((a) & ((size)-1)) ? (1 + ((a) | ((size)-1))) : (a))
61 #define NEXT_SA(ap) (ap) = (struct sockaddr *) \
63 ((ap)->sa_len ? ROUNDUP((ap)->sa_len, sizeof(u_long)) \
66 #ifdef RTM_IFANNOUNCE /*NetBSD 1.5 or later*/
67 static int rtsock_input_ifannounce(int, struct rt_msghdr *, char *);
73 int (*func)(int, struct rt_msghdr *, char *);
74 } rtsock_dispatch[] = {
75 #ifdef RTM_IFANNOUNCE /*NetBSD 1.5 or later*/
76 { RTM_IFANNOUNCE, sizeof(struct if_announcemsghdr),
77 rtsock_input_ifannounce },
86 return socket(PF_ROUTE, SOCK_RAW, 0);
95 struct rt_msghdr *rtm;
100 offsetof(struct rt_msghdr, rtm_msglen) + sizeof(rtm->rtm_msglen);
102 n = read(s, msg, sizeof(msg));
105 for (next = msg; next < lim; next += len) {
106 rtm = (struct rt_msghdr *)next;
107 if (lim - next < lenlim)
109 len = rtm->rtm_msglen;
114 warnmsg(LOG_INFO, __func__,
115 "rtmsg type %d, len=%lu", rtm->rtm_type,
119 for (idx = 0; rtsock_dispatch[idx].func; idx++) {
120 if (rtm->rtm_type != rtsock_dispatch[idx].type)
122 if (rtm->rtm_msglen < rtsock_dispatch[idx].minlen) {
123 warnmsg(LOG_INFO, __func__,
124 "rtmsg type %d too short!", rtm->rtm_type);
128 ret = (*rtsock_dispatch[idx].func)(s, rtm, lim);
136 #ifdef RTM_IFANNOUNCE /*NetBSD 1.5 or later*/
138 rtsock_input_ifannounce(int s, struct rt_msghdr *rtm, char *lim)
140 struct if_announcemsghdr *ifan;
141 struct ifinfo *ifinfo;
143 ifan = (struct if_announcemsghdr *)rtm;
144 if ((char *)(ifan + 1) > lim)
147 switch (ifan->ifan_what) {
150 * XXX for NetBSD 1.5, interface index will monotonically be
151 * increased as new pcmcia card gets inserted.
152 * we may be able to do a name-based interface match,
153 * and call ifreconfig() to enable the interface again.
155 warnmsg(LOG_INFO, __func__,
156 "interface %s inserted", ifan->ifan_name);
159 warnmsg(LOG_WARNING, __func__,
160 "interface %s removed", ifan->ifan_name);
161 ifinfo = find_ifinfo(ifan->ifan_index);
164 warnmsg(LOG_INFO, __func__,
165 "bring interface %s to DOWN state",
168 ifinfo->state = IFS_DOWN;