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
19
20  $QuaggaId: $Format:%an, %ai, %h$ $
21*/
22
23#include <sys/types.h>
24#include <sys/socket.h>
25#include <string.h>
26
27#include "pim_igmp_join.h"
28
29#ifndef SOL_IP
30#define SOL_IP IPPROTO_IP
31#endif
32
33#ifndef MCAST_JOIN_SOURCE_GROUP
34#define MCAST_JOIN_SOURCE_GROUP 46
35struct group_source_req
36{
37  uint32_t gsr_interface;
38  struct sockaddr_storage gsr_group;
39  struct sockaddr_storage gsr_source;
40};
41#endif
42
43int pim_igmp_join_source(int fd, int ifindex,
44			 struct in_addr group_addr,
45			 struct in_addr source_addr)
46{
47  struct group_source_req req;
48  struct sockaddr_in *group_sa = (struct sockaddr_in *) &req.gsr_group;
49  struct sockaddr_in *source_sa = (struct sockaddr_in *) &req.gsr_source;
50
51  memset(group_sa, 0, sizeof(*group_sa));
52  group_sa->sin_family = AF_INET;
53  group_sa->sin_addr = group_addr;
54  group_sa->sin_port = htons(0);
55
56  memset(source_sa, 0, sizeof(*source_sa));
57  source_sa->sin_family = AF_INET;
58  source_sa->sin_addr = source_addr;
59  source_sa->sin_port = htons(0);
60
61  req.gsr_interface = ifindex;
62
63  return setsockopt(fd, SOL_IP, MCAST_JOIN_SOURCE_GROUP,
64		    &req, sizeof(req));
65
66  return 0;
67}
68