void qdr_router_node_free(qdr_core_t *core, qdr_node_t *rnode)
{
qd_bitmask_free(rnode->valid_origins);
DEQ_REMOVE(core->routers, rnode);
core->routers_by_mask_bit[rnode->mask_bit] = 0;
core->cost_epoch++;
free_qdr_node_t(rnode);
}
static void qdr_del_router_CT(qdr_core_t *core, qdr_action_t *action, bool discard)
{
int router_maskbit = action->args.route_table.router_maskbit;
if (router_maskbit >= qd_bitmask_width() || router_maskbit < 0) {
qd_log(core->log, QD_LOG_CRITICAL, "del_router: Router maskbit out of range: %d", router_maskbit);
return;
}
if (core->routers_by_mask_bit[router_maskbit] == 0) {
qd_log(core->log, QD_LOG_CRITICAL, "del_router: Deleting nonexistent router: %d", router_maskbit);
return;
}
qdr_node_t *rnode = core->routers_by_mask_bit[router_maskbit];
qdr_address_t *oaddr = rnode->owning_addr;
assert(oaddr);
//
// Unlink the router node from the address record
//
qd_bitmask_clear_bit(oaddr->rnodes, router_maskbit);
qd_bitmask_clear_bit(core->router_addr_T->rnodes, router_maskbit);
qd_bitmask_clear_bit(core->routerma_addr_T->rnodes, router_maskbit);
rnode->ref_count -= 3;
//
// While the router node has a non-zero reference count, look for addresses
// to unlink the node from.
//
qdr_address_t *addr = DEQ_HEAD(core->addrs);
while (addr && rnode->ref_count > 0) {
if (qd_bitmask_clear_bit(addr->rnodes, router_maskbit))
//
// If the cleared bit was originally set, decrement the ref count
//
rnode->ref_count--;
addr = DEQ_NEXT(addr);
}
assert(rnode->ref_count == 0);
//
// Free the router node and the owning address records.
//
qd_bitmask_free(rnode->valid_origins);
DEQ_REMOVE(core->routers, rnode);
free_qdr_node_t(rnode);
qd_hash_remove_by_handle(core->addr_hash, oaddr->hash_handle);
DEQ_REMOVE(core->addrs, oaddr);
qd_hash_handle_free(oaddr->hash_handle);
core->routers_by_mask_bit[router_maskbit] = 0;
free_qdr_address_t(oaddr);
}