2 * Copyright (c) 2009 Hiroki Sato. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 static const char rcsid[] =
31 #include <sys/param.h>
32 #include <sys/ioctl.h>
33 #include <sys/socket.h>
34 #include <sys/sysctl.h>
36 #include <net/route.h>
46 #include <arpa/inet.h>
48 #include <netinet/in.h>
49 #include <net/if_var.h>
50 #include <netinet/in_var.h>
51 #include <arpa/inet.h>
54 #include <netinet6/nd6.h>
58 #define MAX_SYSCTL_TRY 5
59 #define ND6BITS "\020\001PERFORMNUD\002ACCEPT_RTADV\003PREFER_SOURCE" \
60 "\004IFDISABLED\005DONT_SET_IFROUTE\006AUTO_LINKLOCAL" \
61 "\007NO_RADR\010NO_PREFER_IFACE\020DEFAULTIF"
63 static int isnd6defif(int);
64 void setnd6flags(const char *, int, int, const struct afswtch *);
65 void setnd6defif(const char *, int, int, const struct afswtch *);
69 setnd6flags(const char *dummyaddr __unused,
71 const struct afswtch *afp)
76 memset(&nd, 0, sizeof(nd));
77 strncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
78 error = ioctl(s, SIOCGIFINFO_IN6, &nd);
80 warn("ioctl(SIOCGIFINFO_IN6)");
84 nd.ndi.flags &= ~(-d);
87 error = ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd);
89 warn("ioctl(SIOCSIFINFO_IN6)");
93 setnd6defif(const char *dummyaddr __unused,
95 const struct afswtch *afp)
97 struct in6_ndifreq ndifreq;
101 memset(&ndifreq, 0, sizeof(ndifreq));
102 strncpy(ndifreq.ifname, ifr.ifr_name, sizeof(ndifreq.ifname));
106 /* ifindex = 0 means to remove default if */
110 } else if ((ifindex = if_nametoindex(ndifreq.ifname)) == 0) {
111 warn("if_nametoindex(%s)", ndifreq.ifname);
115 ndifreq.ifindex = ifindex;
116 error = ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq);
118 warn("ioctl(SIOCSDEFIFACE_IN6)");
124 struct in6_ndifreq ndifreq;
125 unsigned int ifindex;
128 memset(&ndifreq, 0, sizeof(ndifreq));
129 strncpy(ndifreq.ifname, ifr.ifr_name, sizeof(ndifreq.ifname));
131 ifindex = if_nametoindex(ndifreq.ifname);
132 error = ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq);
134 warn("ioctl(SIOCGDEFIFACE_IN6)");
137 return (ndifreq.ifindex == ifindex);
143 struct in6_ndireq nd;
148 memset(&nd, 0, sizeof(nd));
149 strncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
150 if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
151 if (errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT)
152 warn("socket(AF_INET6, SOCK_DGRAM)");
155 error = ioctl(s6, SIOCGIFINFO_IN6, &nd);
157 if (errno != EPFNOSUPPORT)
158 warn("ioctl(SIOCGIFINFO_IN6)");
162 isdefif = isnd6defif(s6);
164 if (nd.ndi.flags == 0 && !isdefif)
166 printb("\tnd6 options",
167 (unsigned int)(nd.ndi.flags | (isdefif << 15)), ND6BITS);