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quagga 1.0.20160315

    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: }