Function ext_mbuf_create

dpdk/app/test/test_cryptodev.c:9890–9993

}

static inline struct rte_mbuf *
ext_mbuf_create(struct rte_mempool *mbuf_pool, int pkt_len,
		int nb_segs, const void *input_text)
{
	struct rte_mbuf *m = NULL, *mbuf = NULL;
	size_t data_off = 0;
	uint8_t *dst;
	int i, size;
	int t_len;

	if (pkt_len < 1) {
		printf("Packet size must be 1 or more (is %d)\n", pkt_len);
		return NULL;
	}

	if (nb_segs < 1) {
		printf("Number of segments must be 1 or more (is %d)\n",
				nb_segs);
		return NULL;
	}

	t_len = pkt_len >= nb_segs ? pkt_len / nb_segs : 1;
	size = pkt_len;

	/* Create chained mbuf_src with external buffer */
	for (i = 0; size > 0; i++) {
		struct rte_mbuf_ext_shared_info *ret_shinfo = NULL;
		uint16_t data_len = RTE_MIN(size, t_len);
		char mz_name[RTE_MEMZONE_NAMESIZE];
		const struct rte_memzone *memzone;
		void *ext_buf_addr = NULL;
		rte_iova_t buf_iova;
		bool freed = false;
		uint16_t buf_len;

		buf_len = RTE_ALIGN_CEIL(data_len + 1024 +
			sizeof(struct rte_mbuf_ext_shared_info), 8);

		snprintf(mz_name, RTE_MEMZONE_NAMESIZE, "ext_buf_%d", i);
		memzone = rte_memzone_lookup(mz_name);
		if (memzone != NULL && memzone->len != buf_len) {
			rte_memzone_free(memzone);
			memzone = NULL;
		}
		if (memzone == NULL) {
			memzone = rte_memzone_reserve_aligned(mz_name, buf_len, SOCKET_ID_ANY,
				RTE_MEMZONE_IOVA_CONTIG, RTE_CACHE_LINE_SIZE);
			if (memzone == NULL) {
				printf("Can't allocate memory zone %s\n", mz_name);
				return NULL;
			}
		}

		ext_buf_addr = memzone->addr;
		memcpy(ext_buf_addr, RTE_PTR_ADD(input_text, data_off), data_len);

		/* Create buffer to hold rte_mbuf header */
		m = rte_pktmbuf_alloc(mbuf_pool);