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Allow broadcast packets to be sent directly instead of via the MST.

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When the "Broadcast = direct" option is used, broadcast packets are not sent
and forwarded via the Minimum Spanning Tree to all nodes, but are sent directly
to all nodes that can be reached in one hop.

One use for this is to allow running ad-hoc routing protocols, such as OLSR, on
top of tinc.
This commit is contained in:
Guus Sliepen 2012-04-16 01:57:25 +02:00
parent 535a55100b
commit 84531fb6e6
6 changed files with 97 additions and 22 deletions
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9
src/route.c
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@ -34,12 +34,12 @@
rmode_t routing_mode = RMODE_ROUTER;
fmode_t forwarding_mode = FMODE_INTERNAL;
bmode_t broadcast_mode = BMODE_MST;
bool decrement_ttl = false;
bool directonly = false;
bool priorityinheritance = false;
int macexpire = 600;
bool overwrite_mac = false;
bool broadcast = true;
mac_t mymac = {{0xFE, 0xFD, 0, 0, 0, 0}};
/* Sizes of various headers */
@ -430,7 +430,7 @@ static void route_ipv4(node_t *source, vpn_packet_t *packet) {
if(!checklength(source, packet, ether_size + ip_size))
return;
if(broadcast && (((packet->data[30] & 0xf0) == 0xe0) || (
if(broadcast_mode && (((packet->data[30] & 0xf0) == 0xe0) || (
packet->data[30] == 255 &&
packet->data[31] == 255 &&
packet->data[32] == 255 &&
@ -727,7 +727,7 @@ static void route_ipv6(node_t *source, vpn_packet_t *packet) {
return;
}
if(broadcast && packet->data[38] == 255)
if(broadcast_mode && packet->data[38] == 255)
broadcast_packet(source, packet);
else
route_ipv6_unicast(source, packet);
@ -817,8 +817,7 @@ static void route_mac(node_t *source, vpn_packet_t *packet) {
subnet = lookup_subnet_mac(NULL, &dest);
if(!subnet) {
if(broadcast)
broadcast_packet(source, packet);
broadcast_packet(source, packet);
return;
}