Function rte_ipsec_sad_create

dpdk/lib/ipsec/ipsec_sad.c:254–381

}

struct rte_ipsec_sad *
rte_ipsec_sad_create(const char *name, const struct rte_ipsec_sad_conf *conf)
{
	char hash_name[RTE_HASH_NAMESIZE];
	char sad_name[RTE_IPSEC_SAD_NAMESIZE];
	struct rte_tailq_entry *te;
	struct rte_ipsec_sad_list *sad_list;
	struct rte_ipsec_sad *sad, *tmp_sad = NULL;
	struct rte_hash_parameters hash_params = {0};
	int ret;
	uint32_t sa_sum;

	RTE_BUILD_BUG_ON(RTE_IPSEC_SAD_KEY_TYPE_MASK != 3);

	if ((name == NULL) || (conf == NULL) ||
			((conf->max_sa[RTE_IPSEC_SAD_SPI_ONLY] == 0) &&
			(conf->max_sa[RTE_IPSEC_SAD_SPI_DIP] == 0) &&
			(conf->max_sa[RTE_IPSEC_SAD_SPI_DIP_SIP] == 0))) {
		rte_errno = EINVAL;
		return NULL;
	}

	ret = snprintf(sad_name, RTE_IPSEC_SAD_NAMESIZE, SAD_FORMAT, name);
	if (ret < 0 || ret >= RTE_IPSEC_SAD_NAMESIZE) {
		rte_errno = ENAMETOOLONG;
		return NULL;
	}

	/** Init SAD*/
	sa_sum = RTE_MAX(MIN_HASH_ENTRIES,
		conf->max_sa[RTE_IPSEC_SAD_SPI_ONLY]) +
		RTE_MAX(MIN_HASH_ENTRIES,
		conf->max_sa[RTE_IPSEC_SAD_SPI_DIP]) +
		RTE_MAX(MIN_HASH_ENTRIES,
		conf->max_sa[RTE_IPSEC_SAD_SPI_DIP_SIP]);
	sad = rte_zmalloc_socket(NULL, sizeof(*sad) +
		(sizeof(struct hash_cnt) * sa_sum),
		RTE_CACHE_LINE_SIZE, conf->socket_id);
	if (sad == NULL) {
		rte_errno = ENOMEM;
		return NULL;
	}
	memcpy(sad->name, sad_name, sizeof(sad_name));

	hash_params.hash_func = DEFAULT_HASH_FUNC;
	hash_params.hash_func_init_val = rte_rand();
	sad->init_val = hash_params.hash_func_init_val;
	hash_params.socket_id = conf->socket_id;
	hash_params.name = hash_name;
	if (conf->flags & RTE_IPSEC_SAD_FLAG_RW_CONCURRENCY)
		hash_params.extra_flag = RTE_HASH_EXTRA_FLAGS_RW_CONCURRENCY;

	/** Init hash[RTE_IPSEC_SAD_SPI_ONLY] for SPI only */
	snprintf(hash_name, sizeof(hash_name), "sad_1_%p", sad);
	hash_params.key_len = sizeof(((struct rte_ipsec_sadv4_key *)0)->spi);
	sad->keysize[RTE_IPSEC_SAD_SPI_ONLY] = hash_params.key_len;
	hash_params.entries = sa_sum;
	sad->hash[RTE_IPSEC_SAD_SPI_ONLY] = rte_hash_create(&hash_params);