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
;
120 int bufsize
= (8 * 1024 * 1024);
123 mreq6
.ipv6mr_interface
= ifindex
;
124 memcpy (&mreq6
.ipv6mr_multiaddr
, group
, sizeof (struct in6_addr
));
126 ret
= setsockopt (ospf6_sock
, IPPROTO_IPV6
, option
,
127 &mreq6
, sizeof (mreq6
));
130 zlog_err ("Network: setsockopt (%d) on ifindex %d failed: %s",
131 option
, ifindex
, safe_strerror (errno
));
135 setsockopt_so_sendbuf (ospf6_sock
, bufsize
);
136 setsockopt_so_recvbuf (ospf6_sock
, bufsize
);
142 iov_count (struct iovec
*iov
)
145 for (i
= 0; iov
[i
].iov_base
; i
++)
151 iov_totallen (struct iovec
*iov
)
155 for (i
= 0; iov
[i
].iov_base
; i
++)
156 totallen
+= iov
[i
].iov_len
;
161 ospf6_sendmsg (struct in6_addr
*src
, struct in6_addr
*dst
,
162 ifindex_t
*ifindex
, struct iovec
*message
)
165 struct msghdr smsghdr
;
166 struct cmsghdr
*scmsgp
;
170 u_char buf
[CMSG_SPACE (sizeof (struct in6_pktinfo
))];
172 struct in6_pktinfo
*pktinfo
;
173 struct sockaddr_in6 dst_sin6
;
178 scmsgp
= (struct cmsghdr
*)&cmsgbuf
;
179 pktinfo
= (struct in6_pktinfo
*)(CMSG_DATA(scmsgp
));
180 memset (&dst_sin6
, 0, sizeof (struct sockaddr_in6
));
183 pktinfo
->ipi6_ifindex
= *ifindex
;
185 memcpy (&pktinfo
->ipi6_addr
, src
, sizeof (struct in6_addr
));
187 memset (&pktinfo
->ipi6_addr
, 0, sizeof (struct in6_addr
));
189 /* destination address */
190 dst_sin6
.sin6_family
= AF_INET6
;
192 dst_sin6
.sin6_len
= sizeof (struct sockaddr_in6
);
194 memcpy (&dst_sin6
.sin6_addr
, dst
, sizeof (struct in6_addr
));
195 dst_sin6
.sin6_scope_id
= *ifindex
;
197 /* send control msg */
198 scmsgp
->cmsg_level
= IPPROTO_IPV6
;
199 scmsgp
->cmsg_type
= IPV6_PKTINFO
;
200 scmsgp
->cmsg_len
= CMSG_LEN (sizeof (struct in6_pktinfo
));
201 /* scmsgp = CMSG_NXTHDR (&smsghdr, scmsgp); */
204 memset (&smsghdr
, 0, sizeof (smsghdr
));
205 smsghdr
.msg_iov
= message
;
206 smsghdr
.msg_iovlen
= iov_count (message
);
207 smsghdr
.msg_name
= (caddr_t
) &dst_sin6
;
208 smsghdr
.msg_namelen
= sizeof (struct sockaddr_in6
);
209 smsghdr
.msg_control
= (caddr_t
) &cmsgbuf
.buf
;
210 smsghdr
.msg_controllen
= sizeof(cmsgbuf
.buf
);
212 retval
= sendmsg (ospf6_sock
, &smsghdr
, 0);
213 if (retval
!= iov_totallen (message
))
214 zlog_warn ("sendmsg failed: ifindex: %d: %s (%d)",
215 *ifindex
, safe_strerror (errno
), errno
);
221 ospf6_recvmsg (struct in6_addr
*src
, struct in6_addr
*dst
,
222 ifindex_t
*ifindex
, struct iovec
*message
)
225 struct msghdr rmsghdr
;
226 struct cmsghdr
*rcmsgp
;
227 u_char cmsgbuf
[CMSG_SPACE(sizeof (struct in6_pktinfo
))];
228 struct in6_pktinfo
*pktinfo
;
229 struct sockaddr_in6 src_sin6
;
231 rcmsgp
= (struct cmsghdr
*)cmsgbuf
;
232 pktinfo
= (struct in6_pktinfo
*)(CMSG_DATA(rcmsgp
));
233 memset (&src_sin6
, 0, sizeof (struct sockaddr_in6
));
235 /* receive control msg */
236 rcmsgp
->cmsg_level
= IPPROTO_IPV6
;
237 rcmsgp
->cmsg_type
= IPV6_PKTINFO
;
238 rcmsgp
->cmsg_len
= CMSG_LEN (sizeof (struct in6_pktinfo
));
239 /* rcmsgp = CMSG_NXTHDR (&rmsghdr, rcmsgp); */
241 /* receive msg hdr */
242 memset (&rmsghdr
, 0, sizeof (rmsghdr
));
243 rmsghdr
.msg_iov
= message
;
244 rmsghdr
.msg_iovlen
= iov_count (message
);
245 rmsghdr
.msg_name
= (caddr_t
) &src_sin6
;
246 rmsghdr
.msg_namelen
= sizeof (struct sockaddr_in6
);
247 rmsghdr
.msg_control
= (caddr_t
) cmsgbuf
;
248 rmsghdr
.msg_controllen
= sizeof (cmsgbuf
);
250 retval
= recvmsg (ospf6_sock
, &rmsghdr
, 0);
252 zlog_warn ("recvmsg failed: %s", safe_strerror (errno
));
253 else if (retval
== iov_totallen (message
))
254 zlog_warn ("recvmsg read full buffer size: %d", retval
);
258 memcpy (src
, &src_sin6
.sin6_addr
, sizeof (struct in6_addr
));
260 /* destination address */
262 *ifindex
= pktinfo
->ipi6_ifindex
;
264 memcpy (dst
, &pktinfo
->ipi6_addr
, sizeof (struct in6_addr
));