2 * Copyright (C) 2003 Yasuhiro Ohara
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GNU Zebra; see the file COPYING. If not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
26 #include "sockunion.h"
31 #include "ospf6_proto.h"
32 #include "ospf6_network.h"
34 extern struct zebra_privs_t ospf6d_privs;
37 struct in6_addr allspfrouters6;
38 struct in6_addr alldrouters6;
40 /* setsockopt MulticastLoop to off */
42 ospf6_reset_mcastloop (void)
45 if (setsockopt (ospf6_sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
46 &off, sizeof (u_int)) < 0)
47 zlog_warn ("Network: reset IPV6_MULTICAST_LOOP failed: %s",
48 safe_strerror (errno));
52 ospf6_set_pktinfo (void)
54 setsockopt_ipv6_pktinfo (ospf6_sock, 1);
58 ospf6_set_transport_class (void)
60 #ifdef IPTOS_PREC_INTERNETCONTROL
61 setsockopt_ipv6_tclass (ospf6_sock, IPTOS_PREC_INTERNETCONTROL);
66 ospf6_set_checksum (void)
69 #ifndef DISABLE_IPV6_CHECKSUM
70 if (setsockopt (ospf6_sock, IPPROTO_IPV6, IPV6_CHECKSUM,
71 &offset, sizeof (offset)) < 0)
72 zlog_warn ("Network: set IPV6_CHECKSUM failed: %s", safe_strerror (errno));
74 zlog_warn ("Network: Don't set IPV6_CHECKSUM");
75 #endif /* DISABLE_IPV6_CHECKSUM */
78 /* Make ospf6d's server socket. */
80 ospf6_serv_sock (void)
82 if (ospf6d_privs.change (ZPRIVS_RAISE))
83 zlog_err ("ospf6_serv_sock: could not raise privs");
85 ospf6_sock = socket (AF_INET6, SOCK_RAW, IPPROTO_OSPFIGP);
88 zlog_warn ("Network: can't create OSPF6 socket.");
89 if (ospf6d_privs.change (ZPRIVS_LOWER))
90 zlog_err ("ospf_sock_init: could not lower privs");
93 if (ospf6d_privs.change (ZPRIVS_LOWER))
94 zlog_err ("ospf_sock_init: could not lower privs");
96 /* set socket options */
98 sockopt_reuseaddr (ospf6_sock);
100 ospf6_set_reuseaddr ();
102 ospf6_reset_mcastloop ();
103 ospf6_set_pktinfo ();
104 ospf6_set_transport_class ();
105 ospf6_set_checksum ();
107 /* setup global in6_addr, allspf6 and alldr6 for later use */
108 inet_pton (AF_INET6, ALLSPFROUTERS6, &allspfrouters6);
109 inet_pton (AF_INET6, ALLDROUTERS6, &alldrouters6);
114 /* ospf6 set socket option */
116 ospf6_sso (ifindex_t ifindex, struct in6_addr *group, int option)
118 struct ipv6_mreq mreq6;
122 mreq6.ipv6mr_interface = ifindex;
123 memcpy (&mreq6.ipv6mr_multiaddr, group, sizeof (struct in6_addr));
125 ret = setsockopt (ospf6_sock, IPPROTO_IPV6, option,
126 &mreq6, sizeof (mreq6));
129 zlog_err ("Network: setsockopt (%d) on ifindex %d failed: %s",
130 option, ifindex, safe_strerror (errno));
137 iov_count (struct iovec *iov)
140 for (i = 0; iov[i].iov_base; i++)
146 iov_totallen (struct iovec *iov)
150 for (i = 0; iov[i].iov_base; i++)
151 totallen += iov[i].iov_len;
156 ospf6_sendmsg (struct in6_addr *src, struct in6_addr *dst,
157 ifindex_t *ifindex, struct iovec *message)
160 struct msghdr smsghdr;
161 struct cmsghdr *scmsgp;
162 u_char cmsgbuf[CMSG_SPACE(sizeof (struct in6_pktinfo))];
163 struct in6_pktinfo *pktinfo;
164 struct sockaddr_in6 dst_sin6;
169 scmsgp = (struct cmsghdr *)cmsgbuf;
170 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
171 memset (&dst_sin6, 0, sizeof (struct sockaddr_in6));
174 pktinfo->ipi6_ifindex = *ifindex;
176 memcpy (&pktinfo->ipi6_addr, src, sizeof (struct in6_addr));
178 memset (&pktinfo->ipi6_addr, 0, sizeof (struct in6_addr));
180 /* destination address */
181 dst_sin6.sin6_family = AF_INET6;
183 dst_sin6.sin6_len = sizeof (struct sockaddr_in6);
185 memcpy (&dst_sin6.sin6_addr, dst, sizeof (struct in6_addr));
186 #ifdef HAVE_SIN6_SCOPE_ID
187 dst_sin6.sin6_scope_id = *ifindex;
190 /* send control msg */
191 scmsgp->cmsg_level = IPPROTO_IPV6;
192 scmsgp->cmsg_type = IPV6_PKTINFO;
193 scmsgp->cmsg_len = CMSG_LEN (sizeof (struct in6_pktinfo));
194 /* scmsgp = CMSG_NXTHDR (&smsghdr, scmsgp); */
197 memset (&smsghdr, 0, sizeof (smsghdr));
198 smsghdr.msg_iov = message;
199 smsghdr.msg_iovlen = iov_count (message);
200 smsghdr.msg_name = (caddr_t) &dst_sin6;
201 smsghdr.msg_namelen = sizeof (struct sockaddr_in6);
202 smsghdr.msg_control = (caddr_t) cmsgbuf;
203 smsghdr.msg_controllen = scmsgp->cmsg_len;
205 retval = sendmsg (ospf6_sock, &smsghdr, 0);
206 if (retval != iov_totallen (message))
207 zlog_warn ("sendmsg failed: ifindex: %d: %s (%d)",
208 *ifindex, safe_strerror (errno), errno);
214 ospf6_recvmsg (struct in6_addr *src, struct in6_addr *dst,
215 ifindex_t *ifindex, struct iovec *message)
218 struct msghdr rmsghdr;
219 struct cmsghdr *rcmsgp;
220 u_char cmsgbuf[CMSG_SPACE(sizeof (struct in6_pktinfo))];
221 struct in6_pktinfo *pktinfo;
222 struct sockaddr_in6 src_sin6;
224 rcmsgp = (struct cmsghdr *)cmsgbuf;
225 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(rcmsgp));
226 memset (&src_sin6, 0, sizeof (struct sockaddr_in6));
228 /* receive control msg */
229 rcmsgp->cmsg_level = IPPROTO_IPV6;
230 rcmsgp->cmsg_type = IPV6_PKTINFO;
231 rcmsgp->cmsg_len = CMSG_LEN (sizeof (struct in6_pktinfo));
232 /* rcmsgp = CMSG_NXTHDR (&rmsghdr, rcmsgp); */
234 /* receive msg hdr */
235 memset (&rmsghdr, 0, sizeof (rmsghdr));
236 rmsghdr.msg_iov = message;
237 rmsghdr.msg_iovlen = iov_count (message);
238 rmsghdr.msg_name = (caddr_t) &src_sin6;
239 rmsghdr.msg_namelen = sizeof (struct sockaddr_in6);
240 rmsghdr.msg_control = (caddr_t) cmsgbuf;
241 rmsghdr.msg_controllen = sizeof (cmsgbuf);
243 retval = recvmsg (ospf6_sock, &rmsghdr, 0);
245 zlog_warn ("recvmsg failed: %s", safe_strerror (errno));
246 else if (retval == iov_totallen (message))
247 zlog_warn ("recvmsg read full buffer size: %d", retval);
251 memcpy (src, &src_sin6.sin6_addr, sizeof (struct in6_addr));
253 /* destination address */
255 *ifindex = pktinfo->ipi6_ifindex;
257 memcpy (dst, &pktinfo->ipi6_addr, sizeof (struct in6_addr));