static int kaodv_netlink_receive_peer(unsigned char type, void *msg,
unsigned int len)
{
int ret = 0;
struct kaodv_rt_msg *m;
struct kaodv_conf_msg *cm;
struct expl_entry e;
KAODV_DEBUG("Received msg: %s", kaodv_msg_type_to_str(type));
switch (type) {
case KAODVM_ADDROUTE:
if (len < sizeof(struct kaodv_rt_msg))
return -EINVAL;
m = (struct kaodv_rt_msg *)msg;
ret = kaodv_expl_get(m->dst, &e);
if (ret > 0) {
ret = kaodv_expl_update(m->dst, m->nhop, m->time,
m->flags, m->ifindex);
} else {
ret = kaodv_expl_add(m->dst, m->nhop, m->time,
m->flags, m->ifindex);
}
printk(KERN_DEBUG "kaodv: KAODVM_ADDROUTE!\n");
kaodv_queue_set_verdict(KAODV_QUEUE_SEND, m->dst);
break;
case KAODVM_DELROUTE:
if (len < sizeof(struct kaodv_rt_msg))
return -EINVAL;
m = (struct kaodv_rt_msg *)msg;
kaodv_expl_del(m->dst);
kaodv_queue_set_verdict(KAODV_QUEUE_DROP, m->dst);
break;
case KAODVM_NOROUTE_FOUND:
if (len < sizeof(struct kaodv_rt_msg))
return -EINVAL;
m = (struct kaodv_rt_msg *)msg;
KAODV_DEBUG("No route found for %s", print_ip(m->dst));
kaodv_queue_set_verdict(KAODV_QUEUE_DROP, m->dst);
break;
case KAODVM_CONFIG:
if (len < sizeof(struct kaodv_conf_msg))
return -EINVAL;
cm = (struct kaodv_conf_msg *)msg;
active_route_timeout = cm->active_route_timeout;
qual_th = cm->qual_th;
is_gateway = cm->is_gateway;
break;
default:
printk("kaodv-netlink: Unknown message type\n");
ret = -EINVAL;
}
return ret;
}
void kaodv_update_route_timeouts(int hooknum, const struct net_device *dev,
struct iphdr *iph)
{
struct expl_entry e;
struct in_addr bcaddr;
int res;
bcaddr.s_addr = 0; /* Stop compiler from complaining about
* uninitialized bcaddr */
res = if_info_from_ifindex(NULL, &bcaddr, dev->ifindex);
if (res < 0)
return;
if (hooknum == NF_INET_PRE_ROUTING)
kaodv_netlink_send_rt_update_msg(PKT_INBOUND, iph->saddr,
iph->daddr, dev->ifindex);
else if (iph->daddr != INADDR_BROADCAST && iph->daddr != bcaddr.s_addr)
kaodv_netlink_send_rt_update_msg(PKT_OUTBOUND, iph->saddr,
iph->daddr, dev->ifindex);
/* First update forward route and next hop */
if (kaodv_expl_get(iph->daddr, &e)) {
kaodv_expl_update(e.daddr, e.nhop, ACTIVE_ROUTE_TIMEOUT,
e.flags, dev->ifindex);
if (e.nhop != e.daddr && kaodv_expl_get(e.nhop, &e))
kaodv_expl_update(e.daddr, e.nhop, ACTIVE_ROUTE_TIMEOUT,
e.flags, dev->ifindex);
}
/* Update reverse route */
if (kaodv_expl_get(iph->saddr, &e)) {
kaodv_expl_update(e.daddr, e.nhop, ACTIVE_ROUTE_TIMEOUT,
e.flags, dev->ifindex);
if (e.nhop != e.daddr && kaodv_expl_get(e.nhop, &e))
kaodv_expl_update(e.daddr, e.nhop, ACTIVE_ROUTE_TIMEOUT,
e.flags, dev->ifindex);
}
}
static void
kaodv_update_route_timeouts(int hooknum, const struct net_device *dev,
struct iphdr *iph)
{
struct expl_entry e;
struct netdev_info *netdi;
netdi = netdev_info_from_ifindex(dev->ifindex);
if (!netdi)
return;
if (hooknum == NF_IP_PRE_ROUTING)
kaodv_netlink_send_rt_update_msg(PKT_INBOUND, iph->saddr,
iph->daddr, dev->ifindex);
else if (iph->daddr != INADDR_BROADCAST && iph->daddr != netdi->bc_addr)
kaodv_netlink_send_rt_update_msg(PKT_OUTBOUND, iph->saddr,
iph->daddr, dev->ifindex);
/* First update forward route and next hop */
if (kaodv_expl_get(iph->daddr, &e)) {
kaodv_expl_update(e.daddr, e.nhop, ACTIVE_ROUTE_TIMEOUT,
e.flags);
if (e.nhop != e.daddr && kaodv_expl_get(e.nhop, &e))
kaodv_expl_update(e.daddr, e.nhop, ACTIVE_ROUTE_TIMEOUT,
e.flags);
}
/* Update reverse route */
if (kaodv_expl_get(iph->saddr, &e)) {
kaodv_expl_update(e.daddr, e.nhop, ACTIVE_ROUTE_TIMEOUT,
e.flags);
if (e.nhop != e.daddr && kaodv_expl_get(e.nhop, &e))
kaodv_expl_update(e.daddr, e.nhop, ACTIVE_ROUTE_TIMEOUT,
e.flags);
}
}
