Function rte_eth_dma_zone_reserve

dpdk/lib/ethdev/ethdev_driver.c:550–583

}

const struct rte_memzone *
rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
			 uint16_t queue_id, size_t size, unsigned int align,
			 int socket_id)
{
	char z_name[RTE_MEMZONE_NAMESIZE];
	const struct rte_memzone *mz;
	int rc;

	rc = eth_dev_dma_mzone_name(z_name, sizeof(z_name), dev->data->port_id,
			queue_id, ring_name);
	if (rc >= RTE_MEMZONE_NAMESIZE) {
		RTE_ETHDEV_LOG(ERR, "ring name too long\n");
		rte_errno = ENAMETOOLONG;
		return NULL;
	}

	mz = rte_memzone_lookup(z_name);
	if (mz) {
		if ((socket_id != SOCKET_ID_ANY && socket_id != mz->socket_id) ||
				size > mz->len ||
				((uintptr_t)mz->addr & (align - 1)) != 0) {
			RTE_ETHDEV_LOG(ERR,
				"memzone %s does not justify the requested attributes\n",
				mz->name);
			return NULL;
		}

		return mz;
	}

	return rte_memzone_reserve_aligned(z_name, size, socket_id,
			RTE_MEMZONE_IOVA_CONTIG, align);
}

int
rte_eth_hairpin_queue_peer_bind(uint16_t cur_port, uint16_t cur_queue,