static struct fib6_table *ipv6_route_seq_next_table(struct fib6_table *tbl,
						    struct net *net)
{
	unsigned int h;
	struct hlist_node *node;

	if (tbl) {
		h = (tbl->tb6_id & (FIB6_TABLE_HASHSZ - 1)) + 1;
		node = rcu_dereference_bh(hlist_next_rcu(&tbl->tb6_hlist));
	} else {
		h = 0;
		node = NULL;
	}

	while (!node && h < FIB6_TABLE_HASHSZ) {
		node = rcu_dereference_bh(
			hlist_first_rcu(&net->ipv6.fib_table_hash[h++]));
	}
	return hlist_entry_safe(node, struct fib6_table, tb6_hlist);
}
Unknown