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/*
* PIM for Quagga
* Copyright (C) 2008 Everton da Silva Marques
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef PIM_IGMP_JOIN_H
#define PIM_IGMP_JOIN_H
/* required headers #include'd by caller */
#ifndef SOL_IP
#define SOL_IP IPPROTO_IP
#endif
#ifndef MCAST_JOIN_GROUP
#define MCAST_JOIN_GROUP 42
#endif
#ifndef MCAST_JOIN_SOURCE_GROUP
#define MCAST_JOIN_SOURCE_GROUP 46
struct group_source_req {
uint32_t gsr_interface;
struct sockaddr_storage gsr_group;
struct sockaddr_storage gsr_source;
};
#endif
static int pim_igmp_join_source(int fd, ifindex_t ifindex,
struct in_addr group_addr,
struct in_addr source_addr)
{
struct group_source_req req;
struct sockaddr_in group;
struct sockaddr_in source;
memset(&req, 0, sizeof(req));
memset(&group, 0, sizeof(group));
group.sin_family = AF_INET;
group.sin_addr = group_addr;
group.sin_port = htons(0);
memcpy(&req.gsr_group, &group, sizeof(struct sockaddr_in));
memset(&source, 0, sizeof(source));
source.sin_family = AF_INET;
source.sin_addr = source_addr;
source.sin_port = htons(0);
memcpy(&req.gsr_source, &source, sizeof(struct sockaddr_in));
req.gsr_interface = ifindex;
if (source_addr.s_addr == INADDR_ANY)
return setsockopt(fd, SOL_IP, MCAST_JOIN_GROUP, &req,
sizeof(req));
else
return setsockopt(fd, SOL_IP, MCAST_JOIN_SOURCE_GROUP, &req,
sizeof(req));
}
#endif /* PIM_IGMP_JOIN_H */
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