Function decompress_zlib

dpdk/app/test/test_compressdev.c:575–682

}

static int
decompress_zlib(struct rte_comp_op *op,
		const struct rte_comp_xform *xform)
{
	z_stream stream;
	int window_bits;
	int zlib_flush;
	int ret = TEST_FAILED;
	uint8_t *single_src_buf = NULL;
	uint8_t *single_dst_buf = NULL;

	/* initialize zlib stream */
	stream.zalloc = Z_NULL;
	stream.zfree = Z_NULL;
	stream.opaque = Z_NULL;

	/*
	 * Window bits is the base two logarithm of the window size (in bytes).
	 * When doing raw DEFLATE, this number will be negative.
	 */
	window_bits = -(xform->decompress.window_size);
	ret = inflateInit2(&stream, window_bits);

	if (ret != Z_OK) {
		printf("Zlib deflate could not be initialized\n");
		goto exit;
	}

	/* Assuming stateless operation */
	/* SGL */
	if (op->m_src->nb_segs > 1) {
		single_src_buf = rte_malloc(NULL,
				rte_pktmbuf_pkt_len(op->m_src), 0);
		if (single_src_buf == NULL) {
			RTE_LOG(ERR, USER1, "Buffer could not be allocated\n");
			goto exit;
		}
		single_dst_buf = rte_malloc(NULL,
				rte_pktmbuf_pkt_len(op->m_dst), 0);
		if (single_dst_buf == NULL) {
			RTE_LOG(ERR, USER1, "Buffer could not be allocated\n");
			goto exit;
		}
		if (rte_pktmbuf_read(op->m_src, 0,
					rte_pktmbuf_pkt_len(op->m_src),
					single_src_buf) == NULL) {
			RTE_LOG(ERR, USER1,
				"Buffer could not be read entirely\n");
			goto exit;
		}

		stream.avail_in = op->src.length;
		stream.next_in = single_src_buf;
		stream.avail_out = rte_pktmbuf_pkt_len(op->m_dst);
		stream.next_out = single_dst_buf;

	} else {
		stream.avail_in = op->src.length;