Function test_one_pktmbuf

dpdk/app/test/test_mbuf.c:166–309

* test data manipulation in mbuf */

 * test data manipulation in mbuf
 */
static int
test_one_pktmbuf(struct rte_mempool *pktmbuf_pool)
{
	struct rte_mbuf *m = NULL;
	char *data, *data2, *hdr;
	unsigned i;

	printf("Test pktmbuf API\n");

	/* alloc a mbuf */

	m = rte_pktmbuf_alloc(pktmbuf_pool);
	if (m == NULL)
		GOTO_FAIL("Cannot allocate mbuf");
	if (rte_pktmbuf_pkt_len(m) != 0)
		GOTO_FAIL("Bad length");

	rte_pktmbuf_dump(stdout, m, 0);

	/* append data */

	data = rte_pktmbuf_append(m, MBUF_TEST_DATA_LEN);
	if (data == NULL)
		GOTO_FAIL("Cannot append data");
	if (rte_pktmbuf_pkt_len(m) != MBUF_TEST_DATA_LEN)
		GOTO_FAIL("Bad pkt length");
	if (rte_pktmbuf_data_len(m) != MBUF_TEST_DATA_LEN)
		GOTO_FAIL("Bad data length");
	memset(data, 0x66, rte_pktmbuf_pkt_len(m));
	if (!rte_pktmbuf_is_contiguous(m))
		GOTO_FAIL("Buffer should be continuous");
	rte_pktmbuf_dump(stdout, m, MBUF_TEST_DATA_LEN);
	rte_pktmbuf_dump(stdout, m, 2*MBUF_TEST_DATA_LEN);

	/* this append should fail */

	data2 = rte_pktmbuf_append(m, (uint16_t)(rte_pktmbuf_tailroom(m) + 1));
	if (data2 != NULL)
		GOTO_FAIL("Append should not succeed");

	/* append some more data */

	data2 = rte_pktmbuf_append(m, MBUF_TEST_DATA_LEN2);
	if (data2 == NULL)
		GOTO_FAIL("Cannot append data");
	if (rte_pktmbuf_pkt_len(m) != MBUF_TEST_DATA_LEN + MBUF_TEST_DATA_LEN2)
		GOTO_FAIL("Bad pkt length");
	if (rte_pktmbuf_data_len(m) != MBUF_TEST_DATA_LEN + MBUF_TEST_DATA_LEN2)
		GOTO_FAIL("Bad data length");
	if (!rte_pktmbuf_is_contiguous(m))
		GOTO_FAIL("Buffer should be continuous");

	/* trim data at the end of mbuf */

	if (rte_pktmbuf_trim(m, MBUF_TEST_DATA_LEN2) < 0)
		GOTO_FAIL("Cannot trim data");
	if (rte_pktmbuf_pkt_len(m) != MBUF_TEST_DATA_LEN)
		GOTO_FAIL("Bad pkt length");