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Annotation of embedaddon/quagga/pimd/pim_igmp_join.c, revision 1.1.1.1

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: }