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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* PIM for Quagga
* Copyright (C) 2008 Everton da Silva Marques
*/
#ifndef PIM_IGMP_JOIN_H
#define PIM_IGMP_JOIN_H
#include "pim_addr.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
#if PIM_IPV == 4
static inline int pim_gm_join_source(int fd, ifindex_t ifindex,
pim_addr group_addr, pim_addr source_addr)
{
struct group_source_req req;
struct sockaddr_in group = {};
struct sockaddr_in source = {};
memset(&req, 0, sizeof(req));
group.sin_family = PIM_AF;
group.sin_addr = group_addr;
group.sin_port = htons(0);
memcpy(&req.gsr_group, &group, sizeof(group));
source.sin_family = PIM_AF;
source.sin_addr = source_addr;
source.sin_port = htons(0);
memcpy(&req.gsr_source, &source, sizeof(source));
req.gsr_interface = ifindex;
if (pim_addr_is_any(source_addr))
return setsockopt(fd, SOL_IP, MCAST_JOIN_GROUP, &req,
sizeof(req));
else
return setsockopt(fd, SOL_IP, MCAST_JOIN_SOURCE_GROUP, &req,
sizeof(req));
}
#else /* PIM_IPV != 4*/
static inline int pim_gm_join_source(int fd, ifindex_t ifindex,
pim_addr group_addr, pim_addr source_addr)
{
struct group_source_req req;
struct sockaddr_in6 group = {};
struct sockaddr_in6 source = {};
memset(&req, 0, sizeof(req));
group.sin6_family = PIM_AF;
group.sin6_addr = group_addr;
group.sin6_port = htons(0);
memcpy(&req.gsr_group, &group, sizeof(group));
source.sin6_family = PIM_AF;
source.sin6_addr = source_addr;
source.sin6_port = htons(0);
memcpy(&req.gsr_source, &source, sizeof(source));
req.gsr_interface = ifindex;
if (pim_addr_is_any(source_addr))
return setsockopt(fd, SOL_IPV6, MCAST_JOIN_GROUP, &req,
sizeof(req));
else
return setsockopt(fd, SOL_IPV6, MCAST_JOIN_SOURCE_GROUP, &req,
sizeof(req));
}
#endif /* PIM_IPV != 4*/
#endif /* PIM_IGMP_JOIN_H */
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