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Annotation of embedaddon/quagga/pimd/pim_igmp_join.c, revision 1.1

1.1     ! misho       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 <zebra.h>
        !            24: 
        !            25: #include <sys/types.h>
        !            26: #include <sys/socket.h>
        !            27: #include <string.h>
        !            28: 
        !            29: #include "zebra.h"
        !            30: #include "pim_igmp_join.h"
        !            31: 
        !            32: #ifndef SOL_IP
        !            33: #define SOL_IP IPPROTO_IP
        !            34: #endif
        !            35: 
        !            36: #ifndef MCAST_JOIN_SOURCE_GROUP
        !            37: #define MCAST_JOIN_SOURCE_GROUP 46
        !            38: struct group_source_req
        !            39: {
        !            40:   uint32_t gsr_interface;
        !            41:   struct sockaddr_storage gsr_group;
        !            42:   struct sockaddr_storage gsr_source;
        !            43: };
        !            44: #endif
        !            45: 
        !            46: int pim_igmp_join_source(int fd, ifindex_t ifindex,
        !            47:                         struct in_addr group_addr,
        !            48:                         struct in_addr source_addr)
        !            49: {
        !            50:   struct group_source_req req;
        !            51:   struct sockaddr_in group;
        !            52:   struct sockaddr_in source;
        !            53: 
        !            54:   memset(&group, 0, sizeof(group));
        !            55:   group.sin_family = AF_INET;
        !            56:   group.sin_addr = group_addr;
        !            57:   group.sin_port = htons(0);
        !            58:   memcpy(&req.gsr_group, &group, sizeof(struct sockaddr_in));
        !            59: 
        !            60:   memset(&source, 0, sizeof(source));
        !            61:   source.sin_family = AF_INET;
        !            62:   source.sin_addr = source_addr;
        !            63:   source.sin_port = htons(0);
        !            64:   memcpy(&req.gsr_source, &source, sizeof(struct sockaddr_in));
        !            65: 
        !            66:   req.gsr_interface = ifindex;
        !            67: 
        !            68:   return setsockopt(fd, SOL_IP, MCAST_JOIN_SOURCE_GROUP,
        !            69:                    &req, sizeof(req));
        !            70: 
        !            71:   return 0;
        !            72: }