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select the default interface to be used for multicast through a routing table query.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20952 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Hugo Santos
2007-05-01 15:15:47 +00:00
parent 2f470aec1c
commit bbcf6596ec
1 changed files with 19 additions and 1 deletions
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src/add-ons/kernel/network/protocols/ipv4/ipv4.cpp
+19 -1
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@@ -860,6 +860,24 @@ generic_to_ipv4(int option)
}
static net_interface *
get_multicast_interface(ipv4_protocol *protocol, const in_addr *address)
{
sockaddr_in groupAddr;
memset(&groupAddr, 0, sizeof(groupAddr));
groupAddr.sin_family = AF_INET;
if (address)
groupAddr.sin_addr = *address;
net_route *route = sDatalinkModule->get_route(sDomain,
(sockaddr *)&groupAddr);
if (route == NULL)
return NULL;
return route->interface;
}
static status_t
ipv4_delta_membership(ipv4_protocol *protocol, int option,
in_addr *interfaceAddr, in_addr *groupAddr, in_addr *sourceAddr)
@@ -867,7 +885,7 @@ ipv4_delta_membership(ipv4_protocol *protocol, int option,
net_interface *interface = NULL;
if (interfaceAddr->s_addr == INADDR_ANY) {
interface = sDatalinkModule->get_interface_with_address(sDomain, NULL);
interface = get_multicast_interface(protocol, groupAddr);
} else {
sockaddr_in address;
fill_sockaddr_in(&address, interfaceAddr->s_addr);