Function rte_efd_create

dpdk/lib/efd/rte_efd.c:493–715

}

struct rte_efd_table *
rte_efd_create(const char *name, uint32_t max_num_rules, uint32_t key_len,
		uint64_t online_cpu_socket_bitmask, uint8_t offline_cpu_socket)
{
	struct rte_efd_table *table = NULL;
	uint8_t *key_array = NULL;
	uint32_t num_chunks, num_chunks_shift;
	uint8_t socket_id;
	struct rte_efd_list *efd_list = NULL;
	struct rte_tailq_entry *te;
	uint64_t offline_table_size;
	char ring_name[RTE_RING_NAMESIZE];
	struct rte_ring *r = NULL;
	unsigned int i;

	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);

	if (online_cpu_socket_bitmask == 0) {
		RTE_LOG(ERR, EFD, "At least one CPU socket must be enabled "
				"in the bitmask\n");
		return NULL;
	}

	if (max_num_rules == 0) {
		RTE_LOG(ERR, EFD, "Max num rules must be higher than 0\n");
		return NULL;
	}

	/*
	 * Compute the minimum number of chunks (smallest power of 2)
	 * that can hold all of the rules
	 */
	if (max_num_rules % EFD_TARGET_CHUNK_NUM_RULES == 0)
		num_chunks = rte_align32pow2(max_num_rules /
			EFD_TARGET_CHUNK_NUM_RULES);
	else
		num_chunks = rte_align32pow2((max_num_rules /
			EFD_TARGET_CHUNK_NUM_RULES) + 1);

	num_chunks_shift = rte_bsf32(num_chunks);

	rte_mcfg_tailq_write_lock();

	/*
	 * Guarantee there's no existing: this is normally already checked
	 * by ring creation above
	 */
	TAILQ_FOREACH(te, efd_list, next)
	{
		table = (struct rte_efd_table *) te->data;
		if (strncmp(name, table->name, RTE_EFD_NAMESIZE) == 0)
			break;
	}

	table = NULL;
	if (te != NULL) {
		rte_errno = EEXIST;
		te = NULL;