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 <netinet/in_var.h>
50 #include <arpa/inet.h>
53 #include <netinet6/nd6.h>
57 #define MAX_SYSCTL_TRY 5
58 #define ND6BITS "\020\001PERFORMNUD\002ACCEPT_RTADV\003PREFER_SOURCE" \
59 "\004IFDISABLED\005DONT_SET_IFROUTE\006AUTO_LINKLOCAL" \
60 "\007NO_RADR\010NO_PREFER_IFACE\011NO_DAD\020DEFAULTIF"
62 static int isnd6defif(int);
63 void setnd6flags(const char *, int, int, const struct afswtch *);
64 void setnd6defif(const char *, int, int, const struct afswtch *);
68 setnd6flags(const char *dummyaddr __unused,
70 const struct afswtch *afp)
75 memset(&nd, 0, sizeof(nd));
76 strlcpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
77 error = ioctl(s, SIOCGIFINFO_IN6, &nd);
79 warn("ioctl(SIOCGIFINFO_IN6)");
83 nd.ndi.flags &= ~(-d);
86 error = ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd);
88 warn("ioctl(SIOCSIFINFO_IN6)");
92 setnd6defif(const char *dummyaddr __unused,
94 const struct afswtch *afp)
96 struct in6_ndifreq ndifreq;
100 memset(&ndifreq, 0, sizeof(ndifreq));
101 strlcpy(ndifreq.ifname, ifr.ifr_name, sizeof(ndifreq.ifname));
105 /* ifindex = 0 means to remove default if */
109 } else if ((ifindex = if_nametoindex(ndifreq.ifname)) == 0) {
110 warn("if_nametoindex(%s)", ndifreq.ifname);
114 ndifreq.ifindex = ifindex;
115 error = ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq);
117 warn("ioctl(SIOCSDEFIFACE_IN6)");
123 struct in6_ndifreq ndifreq;
124 unsigned int ifindex;
127 memset(&ndifreq, 0, sizeof(ndifreq));
128 strlcpy(ndifreq.ifname, ifr.ifr_name, sizeof(ndifreq.ifname));
130 ifindex = if_nametoindex(ndifreq.ifname);
131 error = ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq);
133 warn("ioctl(SIOCGDEFIFACE_IN6)");
136 return (ndifreq.ifindex == ifindex);
142 struct in6_ndireq nd;
147 memset(&nd, 0, sizeof(nd));
148 strlcpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
149 if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
150 if (errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT)
151 warn("socket(AF_INET6, SOCK_DGRAM)");
154 error = ioctl(s6, SIOCGIFINFO_IN6, &nd);
156 if (errno != EPFNOSUPPORT)
157 warn("ioctl(SIOCGIFINFO_IN6)");
161 isdefif = isnd6defif(s6);
163 if (nd.ndi.flags == 0 && !isdefif)
165 printb("\tnd6 options",
166 (unsigned int)(nd.ndi.flags | (isdefif << 15)), ND6BITS);