92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* PIM for Quagga
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* Copyright (C) 2008 Everton da Silva Marques
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*/
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#ifndef PIM_IGMP_JOIN_H
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#define PIM_IGMP_JOIN_H
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#include "pim_addr.h"
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/* required headers #include'd by caller */
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#ifndef SOL_IP
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#define SOL_IP IPPROTO_IP
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#endif
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#ifndef MCAST_JOIN_GROUP
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#define MCAST_JOIN_GROUP 42
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#endif
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#ifndef MCAST_JOIN_SOURCE_GROUP
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#define MCAST_JOIN_SOURCE_GROUP 46
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struct group_source_req {
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uint32_t gsr_interface;
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struct sockaddr_storage gsr_group;
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struct sockaddr_storage gsr_source;
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};
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#endif
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#if PIM_IPV == 4
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static inline int pim_gm_join_source(int fd, ifindex_t ifindex,
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pim_addr group_addr, pim_addr source_addr)
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{
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struct group_source_req req;
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struct sockaddr_in group = {};
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struct sockaddr_in source = {};
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memset(&req, 0, sizeof(req));
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group.sin_family = PIM_AF;
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group.sin_addr = group_addr;
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group.sin_port = htons(0);
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memcpy(&req.gsr_group, &group, sizeof(group));
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source.sin_family = PIM_AF;
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source.sin_addr = source_addr;
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source.sin_port = htons(0);
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memcpy(&req.gsr_source, &source, sizeof(source));
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req.gsr_interface = ifindex;
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if (pim_addr_is_any(source_addr))
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return setsockopt(fd, SOL_IP, MCAST_JOIN_GROUP, &req,
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sizeof(req));
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else
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return setsockopt(fd, SOL_IP, MCAST_JOIN_SOURCE_GROUP, &req,
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sizeof(req));
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}
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#else /* PIM_IPV != 4*/
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static inline int pim_gm_join_source(int fd, ifindex_t ifindex,
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pim_addr group_addr, pim_addr source_addr)
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{
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struct group_source_req req;
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struct sockaddr_in6 group = {};
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struct sockaddr_in6 source = {};
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memset(&req, 0, sizeof(req));
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group.sin6_family = PIM_AF;
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group.sin6_addr = group_addr;
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group.sin6_port = htons(0);
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memcpy(&req.gsr_group, &group, sizeof(group));
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source.sin6_family = PIM_AF;
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source.sin6_addr = source_addr;
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source.sin6_port = htons(0);
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memcpy(&req.gsr_source, &source, sizeof(source));
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req.gsr_interface = ifindex;
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if (pim_addr_is_any(source_addr))
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return setsockopt(fd, SOL_IPV6, MCAST_JOIN_GROUP, &req,
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sizeof(req));
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else
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return setsockopt(fd, SOL_IPV6, MCAST_JOIN_SOURCE_GROUP, &req,
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sizeof(req));
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}
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#endif /* PIM_IPV != 4*/
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#endif /* PIM_IGMP_JOIN_H */
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