X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest%2Ftest_mbuf.c;fp=test%2Ftest%2Ftest_mbuf.c;h=d3ea812e51cbd3fb80433bacd1cdcb566833ddc4;hb=7595afa4d30097c1177b69257118d8ad89a539be;hp=0000000000000000000000000000000000000000;hpb=ce3d555e43e3795b5d9507fcfc76b7a0a92fd0d6;p=deb_dpdk.git

diff --git a/test/test/test_mbuf.c b/test/test/test_mbuf.c
new file mode 100644
index 00000000..d3ea812e
--- /dev/null
+++ b/test/test/test_mbuf.c
@@ -0,0 +1,1152 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/queue.h>
+
+#include <rte_common.h>
+#include <rte_debug.h>
+#include <rte_log.h>
+#include <rte_common.h>
+#include <rte_memory.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+#include <rte_launch.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_ring.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_random.h>
+#include <rte_cycles.h>
+
+#include "test.h"
+
+#define MBUF_DATA_SIZE          2048
+#define NB_MBUF                 128
+#define MBUF_TEST_DATA_LEN      1464
+#define MBUF_TEST_DATA_LEN2     50
+#define MBUF_TEST_HDR1_LEN      20
+#define MBUF_TEST_HDR2_LEN      30
+#define MBUF_TEST_ALL_HDRS_LEN  (MBUF_TEST_HDR1_LEN+MBUF_TEST_HDR2_LEN)
+
+/* size of private data for mbuf in pktmbuf_pool2 */
+#define MBUF2_PRIV_SIZE         128
+
+#define REFCNT_MAX_ITER         64
+#define REFCNT_MAX_TIMEOUT      10
+#define REFCNT_MAX_REF          (RTE_MAX_LCORE)
+#define REFCNT_MBUF_NUM         64
+#define REFCNT_RING_SIZE        (REFCNT_MBUF_NUM * REFCNT_MAX_REF)
+
+#define MAGIC_DATA              0x42424242
+
+#define MAKE_STRING(x)          # x
+
+static struct rte_mempool *pktmbuf_pool = NULL;
+static struct rte_mempool *pktmbuf_pool2 = NULL;
+
+#ifdef RTE_MBUF_REFCNT_ATOMIC
+
+static struct rte_mempool *refcnt_pool = NULL;
+static struct rte_ring *refcnt_mbuf_ring = NULL;
+static volatile uint32_t refcnt_stop_slaves;
+static unsigned refcnt_lcore[RTE_MAX_LCORE];
+
+#endif
+
+/*
+ * MBUF
+ * ====
+ *
+ * #. Allocate a mbuf pool.
+ *
+ *    - The pool contains NB_MBUF elements, where each mbuf is MBUF_SIZE
+ *      bytes long.
+ *
+ * #. Test multiple allocations of mbufs from this pool.
+ *
+ *    - Allocate NB_MBUF and store pointers in a table.
+ *    - If an allocation fails, return an error.
+ *    - Free all these mbufs.
+ *    - Repeat the same test to check that mbufs were freed correctly.
+ *
+ * #. Test data manipulation in pktmbuf.
+ *
+ *    - Alloc an mbuf.
+ *    - Append data using rte_pktmbuf_append().
+ *    - Test for error in rte_pktmbuf_append() when len is too large.
+ *    - Trim data at the end of mbuf using rte_pktmbuf_trim().
+ *    - Test for error in rte_pktmbuf_trim() when len is too large.
+ *    - Prepend a header using rte_pktmbuf_prepend().
+ *    - Test for error in rte_pktmbuf_prepend() when len is too large.
+ *    - Remove data at the beginning of mbuf using rte_pktmbuf_adj().
+ *    - Test for error in rte_pktmbuf_adj() when len is too large.
+ *    - Check that appended data is not corrupt.
+ *    - Free the mbuf.
+ *    - Between all these tests, check data_len and pkt_len, and
+ *      that the mbuf is contiguous.
+ *    - Repeat the test to check that allocation operations
+ *      reinitialize the mbuf correctly.
+ *
+ * #. Test packet cloning
+ *    - Clone a mbuf and verify the data
+ *    - Clone the cloned mbuf and verify the data
+ *    - Attach a mbuf to another that does not have the same priv_size.
+ */
+
+#define GOTO_FAIL(str, ...) do {					\
+		printf("mbuf test FAILED (l.%d): <" str ">\n",		\
+		       __LINE__,  ##__VA_ARGS__);			\
+		goto fail;						\
+} while(0)
+
+/*
+ * test data manipulation in mbuf with non-ascii data
+ */
+static int
+test_pktmbuf_with_non_ascii_data(void)
+{
+	struct rte_mbuf *m = NULL;
+	char *data;
+
+	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");
+
+	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, 0xff, 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_free(m);
+
+	return 0;
+
+fail:
+	if(m) {
+		rte_pktmbuf_free(m);
+	}
+	return -1;
+}
+
+/*
+ * test data manipulation in mbuf
+ */
+static int
+test_one_pktmbuf(void)
+{
+	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");
+	if (rte_pktmbuf_data_len(m) != MBUF_TEST_DATA_LEN)
+		GOTO_FAIL("Bad data length");
+	if (!rte_pktmbuf_is_contiguous(m))
+		GOTO_FAIL("Buffer should be continuous");
+
+	/* this trim should fail */
+
+	if (rte_pktmbuf_trim(m, (uint16_t)(rte_pktmbuf_data_len(m) + 1)) == 0)
+		GOTO_FAIL("trim should not succeed");
+
+	/* prepend one header */
+
+	hdr = rte_pktmbuf_prepend(m, MBUF_TEST_HDR1_LEN);
+	if (hdr == NULL)
+		GOTO_FAIL("Cannot prepend");
+	if (data - hdr != MBUF_TEST_HDR1_LEN)
+		GOTO_FAIL("Prepend failed");
+	if (rte_pktmbuf_pkt_len(m) != MBUF_TEST_DATA_LEN + MBUF_TEST_HDR1_LEN)
+		GOTO_FAIL("Bad pkt length");
+	if (rte_pktmbuf_data_len(m) != MBUF_TEST_DATA_LEN + MBUF_TEST_HDR1_LEN)
+		GOTO_FAIL("Bad data length");
+	if (!rte_pktmbuf_is_contiguous(m))
+		GOTO_FAIL("Buffer should be continuous");
+	memset(hdr, 0x55, MBUF_TEST_HDR1_LEN);
+
+	/* prepend another header */
+
+	hdr = rte_pktmbuf_prepend(m, MBUF_TEST_HDR2_LEN);
+	if (hdr == NULL)
+		GOTO_FAIL("Cannot prepend");
+	if (data - hdr != MBUF_TEST_ALL_HDRS_LEN)
+		GOTO_FAIL("Prepend failed");
+	if (rte_pktmbuf_pkt_len(m) != MBUF_TEST_DATA_LEN + MBUF_TEST_ALL_HDRS_LEN)
+		GOTO_FAIL("Bad pkt length");
+	if (rte_pktmbuf_data_len(m) != MBUF_TEST_DATA_LEN + MBUF_TEST_ALL_HDRS_LEN)
+		GOTO_FAIL("Bad data length");
+	if (!rte_pktmbuf_is_contiguous(m))
+		GOTO_FAIL("Buffer should be continuous");
+	memset(hdr, 0x55, MBUF_TEST_HDR2_LEN);
+
+	rte_mbuf_sanity_check(m, 1);
+	rte_mbuf_sanity_check(m, 0);
+	rte_pktmbuf_dump(stdout, m, 0);
+
+	/* this prepend should fail */
+
+	hdr = rte_pktmbuf_prepend(m, (uint16_t)(rte_pktmbuf_headroom(m) + 1));
+	if (hdr != NULL)
+		GOTO_FAIL("prepend should not succeed");
+
+	/* remove data at beginning of mbuf (adj) */
+
+	if (data != rte_pktmbuf_adj(m, MBUF_TEST_ALL_HDRS_LEN))
+		GOTO_FAIL("rte_pktmbuf_adj failed");
+	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");
+	if (!rte_pktmbuf_is_contiguous(m))
+		GOTO_FAIL("Buffer should be continuous");
+
+	/* this adj should fail */
+
+	if (rte_pktmbuf_adj(m, (uint16_t)(rte_pktmbuf_data_len(m) + 1)) != NULL)
+		GOTO_FAIL("rte_pktmbuf_adj should not succeed");
+
+	/* check data */
+
+	if (!rte_pktmbuf_is_contiguous(m))
+		GOTO_FAIL("Buffer should be continuous");
+
+	for (i=0; i<MBUF_TEST_DATA_LEN; i++) {
+		if (data[i] != 0x66)
+			GOTO_FAIL("Data corrupted at offset %u", i);
+	}
+
+	/* free mbuf */
+
+	rte_pktmbuf_free(m);
+	m = NULL;
+	return 0;
+
+fail:
+	if (m)
+		rte_pktmbuf_free(m);
+	return -1;
+}
+
+static int
+testclone_testupdate_testdetach(void)
+{
+	struct rte_mbuf *m = NULL;
+	struct rte_mbuf *clone = NULL;
+	struct rte_mbuf *clone2 = NULL;
+	unaligned_uint32_t *data;
+
+	/* alloc a mbuf */
+	m = rte_pktmbuf_alloc(pktmbuf_pool);
+	if (m == NULL)
+		GOTO_FAIL("ooops not allocating mbuf");
+
+	if (rte_pktmbuf_pkt_len(m) != 0)
+		GOTO_FAIL("Bad length");
+
+	rte_pktmbuf_append(m, sizeof(uint32_t));
+	data = rte_pktmbuf_mtod(m, unaligned_uint32_t *);
+	*data = MAGIC_DATA;
+
+	/* clone the allocated mbuf */
+	clone = rte_pktmbuf_clone(m, pktmbuf_pool);
+	if (clone == NULL)
+		GOTO_FAIL("cannot clone data\n");
+
+	data = rte_pktmbuf_mtod(clone, unaligned_uint32_t *);
+	if (*data != MAGIC_DATA)
+		GOTO_FAIL("invalid data in clone\n");
+
+	if (rte_mbuf_refcnt_read(m) != 2)
+		GOTO_FAIL("invalid refcnt in m\n");
+
+	/* free the clone */
+	rte_pktmbuf_free(clone);
+	clone = NULL;
+
+	/* same test with a chained mbuf */
+	m->next = rte_pktmbuf_alloc(pktmbuf_pool);
+	if (m->next == NULL)
+		GOTO_FAIL("Next Pkt Null\n");
+
+	rte_pktmbuf_append(m->next, sizeof(uint32_t));
+	data = rte_pktmbuf_mtod(m->next, unaligned_uint32_t *);
+	*data = MAGIC_DATA;
+
+	clone = rte_pktmbuf_clone(m, pktmbuf_pool);
+	if (clone == NULL)
+		GOTO_FAIL("cannot clone data\n");
+
+	data = rte_pktmbuf_mtod(clone, unaligned_uint32_t *);
+	if (*data != MAGIC_DATA)
+		GOTO_FAIL("invalid data in clone\n");
+
+	data = rte_pktmbuf_mtod(clone->next, unaligned_uint32_t *);
+	if (*data != MAGIC_DATA)
+		GOTO_FAIL("invalid data in clone->next\n");
+
+	if (rte_mbuf_refcnt_read(m) != 2)
+		GOTO_FAIL("invalid refcnt in m\n");
+
+	if (rte_mbuf_refcnt_read(m->next) != 2)
+		GOTO_FAIL("invalid refcnt in m->next\n");
+
+	/* try to clone the clone */
+
+	clone2 = rte_pktmbuf_clone(clone, pktmbuf_pool);
+	if (clone2 == NULL)
+		GOTO_FAIL("cannot clone the clone\n");
+
+	data = rte_pktmbuf_mtod(clone2, unaligned_uint32_t *);
+	if (*data != MAGIC_DATA)
+		GOTO_FAIL("invalid data in clone2\n");
+
+	data = rte_pktmbuf_mtod(clone2->next, unaligned_uint32_t *);
+	if (*data != MAGIC_DATA)
+		GOTO_FAIL("invalid data in clone2->next\n");
+
+	if (rte_mbuf_refcnt_read(m) != 3)
+		GOTO_FAIL("invalid refcnt in m\n");
+
+	if (rte_mbuf_refcnt_read(m->next) != 3)
+		GOTO_FAIL("invalid refcnt in m->next\n");
+
+	/* free mbuf */
+	rte_pktmbuf_free(m);
+	rte_pktmbuf_free(clone);
+	rte_pktmbuf_free(clone2);
+
+	m = NULL;
+	clone = NULL;
+	clone2 = NULL;
+	printf("%s ok\n", __func__);
+	return 0;
+
+fail:
+	if (m)
+		rte_pktmbuf_free(m);
+	if (clone)
+		rte_pktmbuf_free(clone);
+	if (clone2)
+		rte_pktmbuf_free(clone2);
+	return -1;
+}
+
+static int
+test_attach_from_different_pool(void)
+{
+	struct rte_mbuf *m = NULL;
+	struct rte_mbuf *clone = NULL;
+	struct rte_mbuf *clone2 = NULL;
+	char *data, *c_data, *c_data2;
+
+	/* 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");
+
+	data = rte_pktmbuf_mtod(m, char *);
+
+	/* allocate a new mbuf from the second pool, and attach it to the first
+	 * mbuf */
+	clone = rte_pktmbuf_alloc(pktmbuf_pool2);
+	if (clone == NULL)
+		GOTO_FAIL("cannot allocate mbuf from second pool\n");
+
+	/* check data room size and priv size, and erase priv */
+	if (rte_pktmbuf_data_room_size(clone->pool) != 0)
+		GOTO_FAIL("data room size should be 0\n");
+	if (rte_pktmbuf_priv_size(clone->pool) != MBUF2_PRIV_SIZE)
+		GOTO_FAIL("data room size should be %d\n", MBUF2_PRIV_SIZE);
+	memset(clone + 1, 0, MBUF2_PRIV_SIZE);
+
+	/* save data pointer to compare it after detach() */
+	c_data = rte_pktmbuf_mtod(clone, char *);
+	if (c_data != (char *)clone + sizeof(*clone) + MBUF2_PRIV_SIZE)
+		GOTO_FAIL("bad data pointer in clone");
+	if (rte_pktmbuf_headroom(clone) != 0)
+		GOTO_FAIL("bad headroom in clone");
+
+	rte_pktmbuf_attach(clone, m);
+
+	if (rte_pktmbuf_mtod(clone, char *) != data)
+		GOTO_FAIL("clone was not attached properly\n");
+	if (rte_pktmbuf_headroom(clone) != RTE_PKTMBUF_HEADROOM)
+		GOTO_FAIL("bad headroom in clone after attach");
+	if (rte_mbuf_refcnt_read(m) != 2)
+		GOTO_FAIL("invalid refcnt in m\n");
+
+	/* allocate a new mbuf from the second pool, and attach it to the first
+	 * cloned mbuf */
+	clone2 = rte_pktmbuf_alloc(pktmbuf_pool2);
+	if (clone2 == NULL)
+		GOTO_FAIL("cannot allocate clone2 from second pool\n");
+
+	/* check data room size and priv size, and erase priv */
+	if (rte_pktmbuf_data_room_size(clone2->pool) != 0)
+		GOTO_FAIL("data room size should be 0\n");
+	if (rte_pktmbuf_priv_size(clone2->pool) != MBUF2_PRIV_SIZE)
+		GOTO_FAIL("data room size should be %d\n", MBUF2_PRIV_SIZE);
+	memset(clone2 + 1, 0, MBUF2_PRIV_SIZE);
+
+	/* save data pointer to compare it after detach() */
+	c_data2 = rte_pktmbuf_mtod(clone2, char *);
+	if (c_data2 != (char *)clone2 + sizeof(*clone2) + MBUF2_PRIV_SIZE)
+		GOTO_FAIL("bad data pointer in clone2");
+	if (rte_pktmbuf_headroom(clone2) != 0)
+		GOTO_FAIL("bad headroom in clone2");
+
+	rte_pktmbuf_attach(clone2, clone);
+
+	if (rte_pktmbuf_mtod(clone2, char *) != data)
+		GOTO_FAIL("clone2 was not attached properly\n");
+	if (rte_pktmbuf_headroom(clone2) != RTE_PKTMBUF_HEADROOM)
+		GOTO_FAIL("bad headroom in clone2 after attach");
+	if (rte_mbuf_refcnt_read(m) != 3)
+		GOTO_FAIL("invalid refcnt in m\n");
+
+	/* detach the clones */
+	rte_pktmbuf_detach(clone);
+	if (c_data != rte_pktmbuf_mtod(clone, char *))
+		GOTO_FAIL("clone was not detached properly\n");
+	if (rte_mbuf_refcnt_read(m) != 2)
+		GOTO_FAIL("invalid refcnt in m\n");
+
+	rte_pktmbuf_detach(clone2);
+	if (c_data2 != rte_pktmbuf_mtod(clone2, char *))
+		GOTO_FAIL("clone2 was not detached properly\n");
+	if (rte_mbuf_refcnt_read(m) != 1)
+		GOTO_FAIL("invalid refcnt in m\n");
+
+	/* free the clones and the initial mbuf */
+	rte_pktmbuf_free(clone2);
+	rte_pktmbuf_free(clone);
+	rte_pktmbuf_free(m);
+	printf("%s ok\n", __func__);
+	return 0;
+
+fail:
+	if (m)
+		rte_pktmbuf_free(m);
+	if (clone)
+		rte_pktmbuf_free(clone);
+	if (clone2)
+		rte_pktmbuf_free(clone2);
+	return -1;
+}
+#undef GOTO_FAIL
+
+/*
+ * test allocation and free of mbufs
+ */
+static int
+test_pktmbuf_pool(void)
+{
+	unsigned i;
+	struct rte_mbuf *m[NB_MBUF];
+	int ret = 0;
+
+	for (i=0; i<NB_MBUF; i++)
+		m[i] = NULL;
+
+	/* alloc NB_MBUF mbufs */
+	for (i=0; i<NB_MBUF; i++) {
+		m[i] = rte_pktmbuf_alloc(pktmbuf_pool);
+		if (m[i] == NULL) {
+			printf("rte_pktmbuf_alloc() failed (%u)\n", i);
+			ret = -1;
+		}
+	}
+	struct rte_mbuf *extra = NULL;
+	extra = rte_pktmbuf_alloc(pktmbuf_pool);
+	if(extra != NULL) {
+		printf("Error pool not empty");
+		ret = -1;
+	}
+	extra = rte_pktmbuf_clone(m[0], pktmbuf_pool);
+	if(extra != NULL) {
+		printf("Error pool not empty");
+		ret = -1;
+	}
+	/* free them */
+	for (i=0; i<NB_MBUF; i++) {
+		if (m[i] != NULL)
+			rte_pktmbuf_free(m[i]);
+	}
+
+	return ret;
+}
+
+/*
+ * test that the pointer to the data on a packet mbuf is set properly
+ */
+static int
+test_pktmbuf_pool_ptr(void)
+{
+	unsigned i;
+	struct rte_mbuf *m[NB_MBUF];
+	int ret = 0;
+
+	for (i=0; i<NB_MBUF; i++)
+		m[i] = NULL;
+
+	/* alloc NB_MBUF mbufs */
+	for (i=0; i<NB_MBUF; i++) {
+		m[i] = rte_pktmbuf_alloc(pktmbuf_pool);
+		if (m[i] == NULL) {
+			printf("rte_pktmbuf_alloc() failed (%u)\n", i);
+			ret = -1;
+			break;
+		}
+		m[i]->data_off += 64;
+	}
+
+	/* free them */
+	for (i=0; i<NB_MBUF; i++) {
+		if (m[i] != NULL)
+			rte_pktmbuf_free(m[i]);
+	}
+
+	for (i=0; i<NB_MBUF; i++)
+		m[i] = NULL;
+
+	/* alloc NB_MBUF mbufs */
+	for (i=0; i<NB_MBUF; i++) {
+		m[i] = rte_pktmbuf_alloc(pktmbuf_pool);
+		if (m[i] == NULL) {
+			printf("rte_pktmbuf_alloc() failed (%u)\n", i);
+			ret = -1;
+			break;
+		}
+		if (m[i]->data_off != RTE_PKTMBUF_HEADROOM) {
+			printf("invalid data_off\n");
+			ret = -1;
+		}
+	}
+
+	/* free them */
+	for (i=0; i<NB_MBUF; i++) {
+		if (m[i] != NULL)
+			rte_pktmbuf_free(m[i]);
+	}
+
+	return ret;
+}
+
+static int
+test_pktmbuf_free_segment(void)
+{
+	unsigned i;
+	struct rte_mbuf *m[NB_MBUF];
+	int ret = 0;
+
+	for (i=0; i<NB_MBUF; i++)
+		m[i] = NULL;
+
+	/* alloc NB_MBUF mbufs */
+	for (i=0; i<NB_MBUF; i++) {
+		m[i] = rte_pktmbuf_alloc(pktmbuf_pool);
+		if (m[i] == NULL) {
+			printf("rte_pktmbuf_alloc() failed (%u)\n", i);
+			ret = -1;
+		}
+	}
+
+	/* free them */
+	for (i=0; i<NB_MBUF; i++) {
+		if (m[i] != NULL) {
+			struct rte_mbuf *mb, *mt;
+
+			mb = m[i];
+			while(mb != NULL) {
+				mt = mb;
+				mb = mb->next;
+				rte_pktmbuf_free_seg(mt);
+			}
+		}
+	}
+
+	return ret;
+}
+
+/*
+ * Stress test for rte_mbuf atomic refcnt.
+ * Implies that RTE_MBUF_REFCNT_ATOMIC is defined.
+ * For more efficency, recomended to run with RTE_LIBRTE_MBUF_DEBUG defined.
+ */
+
+#ifdef RTE_MBUF_REFCNT_ATOMIC
+
+static int
+test_refcnt_slave(__attribute__((unused)) void *arg)
+{
+	unsigned lcore, free;
+	void *mp = 0;
+
+	lcore = rte_lcore_id();
+	printf("%s started at lcore %u\n", __func__, lcore);
+
+	free = 0;
+	while (refcnt_stop_slaves == 0) {
+		if (rte_ring_dequeue(refcnt_mbuf_ring, &mp) == 0) {
+			free++;
+			rte_pktmbuf_free(mp);
+		}
+	}
+
+	refcnt_lcore[lcore] += free;
+	printf("%s finished at lcore %u, "
+	       "number of freed mbufs: %u\n",
+	       __func__, lcore, free);
+	return 0;
+}
+
+static void
+test_refcnt_iter(unsigned lcore, unsigned iter)
+{
+	uint16_t ref;
+	unsigned i, n, tref, wn;
+	struct rte_mbuf *m;
+
+	tref = 0;
+
+	/* For each mbuf in the pool:
+	 * - allocate mbuf,
+	 * - increment it's reference up to N+1,
+	 * - enqueue it N times into the ring for slave cores to free.
+	 */
+	for (i = 0, n = rte_mempool_avail_count(refcnt_pool);
+	    i != n && (m = rte_pktmbuf_alloc(refcnt_pool)) != NULL;
+	    i++) {
+		ref = RTE_MAX(rte_rand() % REFCNT_MAX_REF, 1UL);
+		tref += ref;
+		if ((ref & 1) != 0) {
+			rte_pktmbuf_refcnt_update(m, ref);
+			while (ref-- != 0)
+				rte_ring_enqueue(refcnt_mbuf_ring, m);
+		} else {
+			while (ref-- != 0) {
+				rte_pktmbuf_refcnt_update(m, 1);
+				rte_ring_enqueue(refcnt_mbuf_ring, m);
+			}
+		}
+		rte_pktmbuf_free(m);
+	}
+
+	if (i != n)
+		rte_panic("(lcore=%u, iter=%u): was able to allocate only "
+		          "%u from %u mbufs\n", lcore, iter, i, n);
+
+	/* wait till slave lcores  will consume all mbufs */
+	while (!rte_ring_empty(refcnt_mbuf_ring))
+		;
+
+	/* check that all mbufs are back into mempool by now */
+	for (wn = 0; wn != REFCNT_MAX_TIMEOUT; wn++) {
+		if ((i = rte_mempool_avail_count(refcnt_pool)) == n) {
+			refcnt_lcore[lcore] += tref;
+			printf("%s(lcore=%u, iter=%u) completed, "
+			    "%u references processed\n",
+			    __func__, lcore, iter, tref);
+			return;
+		}
+		rte_delay_ms(100);
+	}
+
+	rte_panic("(lcore=%u, iter=%u): after %us only "
+	          "%u of %u mbufs left free\n", lcore, iter, wn, i, n);
+}
+
+static int
+test_refcnt_master(void)
+{
+	unsigned i, lcore;
+
+	lcore = rte_lcore_id();
+	printf("%s started at lcore %u\n", __func__, lcore);
+
+	for (i = 0; i != REFCNT_MAX_ITER; i++)
+		test_refcnt_iter(lcore, i);
+
+	refcnt_stop_slaves = 1;
+	rte_wmb();
+
+	printf("%s finished at lcore %u\n", __func__, lcore);
+	return 0;
+}
+
+#endif
+
+static int
+test_refcnt_mbuf(void)
+{
+#ifdef RTE_MBUF_REFCNT_ATOMIC
+
+	unsigned lnum, master, slave, tref;
+
+
+	if ((lnum = rte_lcore_count()) == 1) {
+		printf("skipping %s, number of lcores: %u is not enough\n",
+		    __func__, lnum);
+		return 0;
+	}
+
+	printf("starting %s, at %u lcores\n", __func__, lnum);
+
+	/* create refcnt pool & ring if they don't exist */
+
+	if (refcnt_pool == NULL &&
+			(refcnt_pool = rte_pktmbuf_pool_create(
+				MAKE_STRING(refcnt_pool),
+				REFCNT_MBUF_NUM, 0, 0, 0,
+				SOCKET_ID_ANY)) == NULL) {
+		printf("%s: cannot allocate " MAKE_STRING(refcnt_pool) "\n",
+		    __func__);
+		return -1;
+	}
+
+	if (refcnt_mbuf_ring == NULL &&
+			(refcnt_mbuf_ring = rte_ring_create("refcnt_mbuf_ring",
+			rte_align32pow2(REFCNT_RING_SIZE), SOCKET_ID_ANY,
+			RING_F_SP_ENQ)) == NULL) {
+		printf("%s: cannot allocate " MAKE_STRING(refcnt_mbuf_ring)
+		    "\n", __func__);
+		return -1;
+	}
+
+	refcnt_stop_slaves = 0;
+	memset(refcnt_lcore, 0, sizeof (refcnt_lcore));
+
+	rte_eal_mp_remote_launch(test_refcnt_slave, NULL, SKIP_MASTER);
+
+	test_refcnt_master();
+
+	rte_eal_mp_wait_lcore();
+
+	/* check that we porcessed all references */
+	tref = 0;
+	master = rte_get_master_lcore();
+
+	RTE_LCORE_FOREACH_SLAVE(slave)
+		tref += refcnt_lcore[slave];
+
+	if (tref != refcnt_lcore[master])
+		rte_panic("refernced mbufs: %u, freed mbufs: %u\n",
+		          tref, refcnt_lcore[master]);
+
+	rte_mempool_dump(stdout, refcnt_pool);
+	rte_ring_dump(stdout, refcnt_mbuf_ring);
+
+#endif
+	return 0;
+}
+
+#include <unistd.h>
+#include <sys/wait.h>
+
+/* use fork() to test mbuf errors panic */
+static int
+verify_mbuf_check_panics(struct rte_mbuf *buf)
+{
+	int pid;
+	int status;
+
+	pid = fork();
+
+	if (pid == 0) {
+		rte_mbuf_sanity_check(buf, 1); /* should panic */
+		exit(0);  /* return normally if it doesn't panic */
+	} else if (pid < 0){
+		printf("Fork Failed\n");
+		return -1;
+	}
+	wait(&status);
+	if(status == 0)
+		return -1;
+
+	return 0;
+}
+
+static int
+test_failing_mbuf_sanity_check(void)
+{
+	struct rte_mbuf *buf;
+	struct rte_mbuf badbuf;
+
+	printf("Checking rte_mbuf_sanity_check for failure conditions\n");
+
+	/* get a good mbuf to use to make copies */
+	buf = rte_pktmbuf_alloc(pktmbuf_pool);
+	if (buf == NULL)
+		return -1;
+	printf("Checking good mbuf initially\n");
+	if (verify_mbuf_check_panics(buf) != -1)
+		return -1;
+
+	printf("Now checking for error conditions\n");
+
+	if (verify_mbuf_check_panics(NULL)) {
+		printf("Error with NULL mbuf test\n");
+		return -1;
+	}
+
+	badbuf = *buf;
+	badbuf.pool = NULL;
+	if (verify_mbuf_check_panics(&badbuf)) {
+		printf("Error with bad-pool mbuf test\n");
+		return -1;
+	}
+
+	badbuf = *buf;
+	badbuf.buf_physaddr = 0;
+	if (verify_mbuf_check_panics(&badbuf)) {
+		printf("Error with bad-physaddr mbuf test\n");
+		return -1;
+	}
+
+	badbuf = *buf;
+	badbuf.buf_addr = NULL;
+	if (verify_mbuf_check_panics(&badbuf)) {
+		printf("Error with bad-addr mbuf test\n");
+		return -1;
+	}
+
+	badbuf = *buf;
+	badbuf.refcnt = 0;
+	if (verify_mbuf_check_panics(&badbuf)) {
+		printf("Error with bad-refcnt(0) mbuf test\n");
+		return -1;
+	}
+
+	badbuf = *buf;
+	badbuf.refcnt = UINT16_MAX;
+	if (verify_mbuf_check_panics(&badbuf)) {
+		printf("Error with bad-refcnt(MAX) mbuf test\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int
+test_mbuf_linearize(int pkt_len, int nb_segs) {
+
+	struct rte_mbuf *m = NULL, *mbuf = NULL;
+	uint8_t *data;
+	int data_len = 0;
+	int remain;
+	int seg, seg_len;
+	int i;
+
+	if (pkt_len < 1) {
+		printf("Packet size must be 1 or more (is %d)\n", pkt_len);
+		return -1;
+	}
+
+	if (nb_segs < 1) {
+		printf("Number of segments must be 1 or more (is %d)\n",
+				nb_segs);
+		return -1;
+	}
+
+	seg_len = pkt_len / nb_segs;
+	if (seg_len == 0)
+		seg_len = 1;
+
+	remain = pkt_len;
+
+	/* Create chained mbuf_src and fill it generated data */
+	for (seg = 0; remain > 0; seg++) {
+
+		m = rte_pktmbuf_alloc(pktmbuf_pool);
+		if (m == NULL) {
+			printf("Cannot create segment for source mbuf");
+			goto fail;
+		}
+
+		/* Make sure if tailroom is zeroed */
+		memset(rte_pktmbuf_mtod(m, uint8_t *), 0,
+				rte_pktmbuf_tailroom(m));
+
+		data_len = remain;
+		if (data_len > seg_len)
+			data_len = seg_len;
+
+		data = (uint8_t *)rte_pktmbuf_append(m, data_len);
+		if (data == NULL) {
+			printf("Cannot append %d bytes to the mbuf\n",
+					data_len);
+			goto fail;
+		}
+
+		for (i = 0; i < data_len; i++)
+			data[i] = (seg * seg_len + i) % 0x0ff;
+
+		if (seg == 0)
+			mbuf = m;
+		else
+			rte_pktmbuf_chain(mbuf, m);
+
+		remain -= data_len;
+	}
+
+	/* Create destination buffer to store coalesced data */
+	if (rte_pktmbuf_linearize(mbuf)) {
+		printf("Mbuf linearization failed\n");
+		goto fail;
+	}
+
+	if (!rte_pktmbuf_is_contiguous(mbuf)) {
+		printf("Source buffer should be contiguous after "
+				"linearization\n");
+		goto fail;
+	}
+
+	data = rte_pktmbuf_mtod(mbuf, uint8_t *);
+
+	for (i = 0; i < pkt_len; i++)
+		if (data[i] != (i % 0x0ff)) {
+			printf("Incorrect data in linearized mbuf\n");
+			goto fail;
+		}
+
+	rte_pktmbuf_free(mbuf);
+	return 0;
+
+fail:
+	if (mbuf)
+		rte_pktmbuf_free(mbuf);
+	return -1;
+}
+
+static int
+test_mbuf_linearize_check(void)
+{
+	struct test_mbuf_array {
+		int size;
+		int nb_segs;
+	} mbuf_array[] = {
+			{ 128, 1 },
+			{ 64, 64 },
+			{ 512, 10 },
+			{ 250, 11 },
+			{ 123, 8 },
+	};
+	unsigned int i;
+
+	printf("Test mbuf linearize API\n");
+
+	for (i = 0; i < RTE_DIM(mbuf_array); i++)
+		if (test_mbuf_linearize(mbuf_array[i].size,
+				mbuf_array[i].nb_segs)) {
+			printf("Test failed for %d, %d\n", mbuf_array[i].size,
+					mbuf_array[i].nb_segs);
+			return -1;
+		}
+
+	return 0;
+}
+
+static int
+test_mbuf(void)
+{
+	RTE_BUILD_BUG_ON(sizeof(struct rte_mbuf) != RTE_CACHE_LINE_MIN_SIZE * 2);
+
+	/* create pktmbuf pool if it does not exist */
+	if (pktmbuf_pool == NULL) {
+		pktmbuf_pool = rte_pktmbuf_pool_create("test_pktmbuf_pool",
+			NB_MBUF, 32, 0, MBUF_DATA_SIZE, SOCKET_ID_ANY);
+	}
+
+	if (pktmbuf_pool == NULL) {
+		printf("cannot allocate mbuf pool\n");
+		return -1;
+	}
+
+	/* create a specific pktmbuf pool with a priv_size != 0 and no data
+	 * room size */
+	if (pktmbuf_pool2 == NULL) {
+		pktmbuf_pool2 = rte_pktmbuf_pool_create("test_pktmbuf_pool2",
+			NB_MBUF, 32, MBUF2_PRIV_SIZE, 0, SOCKET_ID_ANY);
+	}
+
+	if (pktmbuf_pool2 == NULL) {
+		printf("cannot allocate mbuf pool\n");
+		return -1;
+	}
+
+	/* test multiple mbuf alloc */
+	if (test_pktmbuf_pool() < 0) {
+		printf("test_mbuf_pool() failed\n");
+		return -1;
+	}
+
+	/* do it another time to check that all mbufs were freed */
+	if (test_pktmbuf_pool() < 0) {
+		printf("test_mbuf_pool() failed (2)\n");
+		return -1;
+	}
+
+	/* test that the pointer to the data on a packet mbuf is set properly */
+	if (test_pktmbuf_pool_ptr() < 0) {
+		printf("test_pktmbuf_pool_ptr() failed\n");
+		return -1;
+	}
+
+	/* test data manipulation in mbuf */
+	if (test_one_pktmbuf() < 0) {
+		printf("test_one_mbuf() failed\n");
+		return -1;
+	}
+
+
+	/*
+	 * do it another time, to check that allocation reinitialize
+	 * the mbuf correctly
+	 */
+	if (test_one_pktmbuf() < 0) {
+		printf("test_one_mbuf() failed (2)\n");
+		return -1;
+	}
+
+	if (test_pktmbuf_with_non_ascii_data() < 0) {
+		printf("test_pktmbuf_with_non_ascii_data() failed\n");
+		return -1;
+	}
+
+	/* test free pktmbuf segment one by one */
+	if (test_pktmbuf_free_segment() < 0) {
+		printf("test_pktmbuf_free_segment() failed.\n");
+		return -1;
+	}
+
+	if (testclone_testupdate_testdetach()<0){
+		printf("testclone_and_testupdate() failed \n");
+		return -1;
+	}
+
+	if (test_attach_from_different_pool() < 0) {
+		printf("test_attach_from_different_pool() failed\n");
+		return -1;
+	}
+
+	if (test_refcnt_mbuf()<0){
+		printf("test_refcnt_mbuf() failed \n");
+		return -1;
+	}
+
+	if (test_failing_mbuf_sanity_check() < 0) {
+		printf("test_failing_mbuf_sanity_check() failed\n");
+		return -1;
+	}
+
+	if (test_mbuf_linearize_check() < 0) {
+		printf("test_mbuf_linearize_check() failed\n");
+		return -1;
+	}
+	return 0;
+}
+
+REGISTER_TEST_COMMAND(mbuf_autotest, test_mbuf);