/**
* Update a HNA entry. If it does not exist it
* is created.
* This is the only function that should be called
* from outside concerning creation of HNA entries.
*
*@param gw address of the gateway
*@param net address of the network
*@param prefixlen the prefix length
*@param vtime the validitytime of the entry
*/
void
olsr_update_hna_entry(const union olsr_ip_addr *gw, const union olsr_ip_addr *net, uint8_t prefixlen, olsr_reltime vtime)
{
struct hna_entry *gw_entry;
struct hna_net *net_entry;
gw_entry = olsr_lookup_hna_gw(gw);
if (!gw_entry) {
/* Need to add the entry */
gw_entry = olsr_add_hna_entry(gw);
}
net_entry = olsr_lookup_hna_net(&gw_entry->networks, net, prefixlen);
if (net_entry == NULL) {
/* Need to add the net */
net_entry = olsr_add_hna_net(gw_entry, net, prefixlen);
changes_hna = true;
}
/*
* Add the rt_path for the entry.
*/
olsr_insert_routing_table(&net_entry->hna_prefix.prefix,
net_entry->hna_prefix.prefix_len, &gw_entry->A_gateway_addr, OLSR_RT_ORIGIN_HNA);
/*
* Start, or refresh the timer, whatever is appropriate.
*/
olsr_set_timer(&net_entry->hna_net_timer, vtime, OLSR_HNA_NET_JITTER, OLSR_TIMER_ONESHOT, &olsr_expire_hna_net_entry, net_entry,
hna_net_timer_cookie);
}
/**
* Add a new tc_entry to the tc tree
*
* @param (last)adr address of the entry
* @return a pointer to the created entry
*/
static struct tc_entry *
olsr_add_tc_entry(const union olsr_ip_addr *adr)
{
#if !defined REMOVE_LOG_DEBUG
struct ipaddr_str buf;
#endif
struct tc_entry *tc;
/*
* Safety net against loss of the last main IP address.
*/
if (olsr_ipcmp(&olsr_cnf->router_id, &all_zero) == 0) {
return NULL;
}
OLSR_DEBUG(LOG_TC, "TC: add entry %s\n", olsr_ip_to_string(&buf, adr));
tc = olsr_memcookie_malloc(tc_mem_cookie);
if (!tc) {
return NULL;
}
/* Fill entry */
tc->addr = *adr;
tc->vertex_node.key = &tc->addr;
tc->mid_seq = -1;
tc->hna_seq = -1;
tc->tc_seq = -1;
/*
* Insert into the global tc tree.
*/
avl_insert(&tc_tree, &tc->vertex_node);
/*
* Initialize subtrees for edges, prefixes, HNAs and MIDs.
*/
avl_init(&tc->edge_tree, avl_comp_default, true, NULL);
avl_init(&tc->prefix_tree, avl_comp_prefix_origin_default, false, NULL);
avl_init(&tc->mid_tree, avl_comp_default, false, NULL);
avl_init(&tc->hna_tree, avl_comp_prefix_default, false, NULL);
/*
* Add a rt_path for ourselves.
*/
olsr_insert_routing_table(adr, 8 * olsr_cnf->ipsize, adr, OLSR_RT_ORIGIN_TC);
return tc;
}
/**
* Add a new tc_entry to the tc tree
*
* @param adr (last)adr address of the entry
* @return a pointer to the created entry
*/
static struct tc_entry *
olsr_add_tc_entry(union olsr_ip_addr *adr)
{
#ifdef DEBUG
struct ipaddr_str buf;
#endif /* DEBUG */
struct tc_entry *tc;
/*
* Safety net against loss of the last main IP address.
*/
if (ipequal(&olsr_cnf->main_addr, &all_zero)) {
return NULL;
}
#ifdef DEBUG
OLSR_PRINTF(1, "TC: add entry %s\n", olsr_ip_to_string(&buf, adr));
#endif /* DEBUG */
tc = olsr_cookie_malloc(tc_mem_cookie);
if (!tc) {
return NULL;
}
/* Fill entry */
tc->addr = *adr;
tc->vertex_node.key = &tc->addr;
/*
* Insert into the global tc tree.
*/
avl_insert(&tc_tree, &tc->vertex_node, AVL_DUP_NO);
olsr_lock_tc_entry(tc);
/*
* Initialize subtrees for edges and prefixes.
*/
avl_init(&tc->edge_tree, avl_comp_default);
avl_init(&tc->prefix_tree, avl_comp_prefix_default);
/*
* Add a rt_path for ourselves.
*/
olsr_insert_routing_table(adr, olsr_cnf->maxplen, adr, OLSR_RT_ORIGIN_INT);
return tc;
}
