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12e41d03 DL |
1 | /* |
2 | PIM for Quagga | |
3 | Copyright (C) 2008 Everton da Silva Marques | |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; see the file COPYING; if not, write to the | |
17 | Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
18 | MA 02110-1301 USA | |
12e41d03 DL |
19 | */ |
20 | ||
21 | #ifndef PIM_IGMP_JOIN_H | |
22 | #define PIM_IGMP_JOIN_H | |
23 | ||
5ef104fc | 24 | /* required headers #include'd by caller */ |
12e41d03 | 25 | |
5ef104fc DL |
26 | #ifndef SOL_IP |
27 | #define SOL_IP IPPROTO_IP | |
28 | #endif | |
29 | ||
30 | #ifndef MCAST_JOIN_SOURCE_GROUP | |
31 | #define MCAST_JOIN_SOURCE_GROUP 46 | |
32 | struct group_source_req | |
33 | { | |
34 | uint32_t gsr_interface; | |
35 | struct sockaddr_storage gsr_group; | |
36 | struct sockaddr_storage gsr_source; | |
37 | }; | |
38 | #endif | |
39 | ||
b892f1dd | 40 | static int pim_igmp_join_source(int fd, ifindex_t ifindex, |
5ef104fc DL |
41 | struct in_addr group_addr, |
42 | struct in_addr source_addr) | |
43 | { | |
44 | struct group_source_req req; | |
45 | struct sockaddr_in group; | |
46 | struct sockaddr_in source; | |
47 | ||
48 | memset(&group, 0, sizeof(group)); | |
49 | group.sin_family = AF_INET; | |
50 | group.sin_addr = group_addr; | |
51 | group.sin_port = htons(0); | |
52 | memcpy(&req.gsr_group, &group, sizeof(struct sockaddr_in)); | |
53 | ||
54 | memset(&source, 0, sizeof(source)); | |
55 | source.sin_family = AF_INET; | |
56 | source.sin_addr = source_addr; | |
57 | source.sin_port = htons(0); | |
58 | memcpy(&req.gsr_source, &source, sizeof(struct sockaddr_in)); | |
59 | ||
60 | req.gsr_interface = ifindex; | |
61 | ||
62 | return setsockopt(fd, SOL_IP, MCAST_JOIN_SOURCE_GROUP, | |
63 | &req, sizeof(req)); | |
64 | ||
65 | return 0; | |
66 | } | |
12e41d03 DL |
67 | |
68 | #endif /* PIM_IGMP_JOIN_H */ |