3 * Copyright (C) 2008 Everton da Silva Marques
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; see the file COPYING; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #ifndef PIM_IGMP_JOIN_H
21 #define PIM_IGMP_JOIN_H
23 /* required headers #include'd by caller */
26 #define SOL_IP IPPROTO_IP
29 #ifndef MCAST_JOIN_GROUP
30 #define MCAST_JOIN_GROUP 42
33 #ifndef MCAST_JOIN_SOURCE_GROUP
34 #define MCAST_JOIN_SOURCE_GROUP 46
35 struct group_source_req
{
36 uint32_t gsr_interface
;
37 struct sockaddr_storage gsr_group
;
38 struct sockaddr_storage gsr_source
;
42 static int pim_igmp_join_source(int fd
, ifindex_t ifindex
,
43 struct in_addr group_addr
,
44 struct in_addr source_addr
)
46 struct group_source_req req
;
47 struct sockaddr_in group
;
48 struct sockaddr_in source
;
50 memset(&req
, 0, sizeof(req
));
51 memset(&group
, 0, sizeof(group
));
52 group
.sin_family
= AF_INET
;
53 group
.sin_addr
= group_addr
;
54 group
.sin_port
= htons(0);
55 memcpy(&req
.gsr_group
, &group
, sizeof(struct sockaddr_in
));
57 memset(&source
, 0, sizeof(source
));
58 source
.sin_family
= AF_INET
;
59 source
.sin_addr
= source_addr
;
60 source
.sin_port
= htons(0);
61 memcpy(&req
.gsr_source
, &source
, sizeof(struct sockaddr_in
));
63 req
.gsr_interface
= ifindex
;
65 if (source_addr
.s_addr
== INADDR_ANY
)
66 return setsockopt(fd
, SOL_IP
, MCAST_JOIN_GROUP
, &req
,
69 return setsockopt(fd
, SOL_IP
, MCAST_JOIN_SOURCE_GROUP
, &req
,
73 #endif /* PIM_IGMP_JOIN_H */