[ovs-dev,v9,12/14] dpdk-tests: Add unit-tests for multi-seg mbufs.

Message ID 1535127870-91663-13-git-send-email-tiago.lam@intel.com
State Superseded
Delegated to: Ian Stokes
Headers show
Series
  • Support multi-segment mbufs
Related show

Commit Message

Lam, Tiago Aug. 24, 2018, 4:24 p.m.
In order to create a minimal environment that allows the tests to get
mbufs from an existing mempool, the following approach is taken:
- EAL is initialised (by using the main dpdk_init()) and a (very) small
  mempool is instantiated (mimicking the logic in dpdk_mp_create()).
  This mempool instance is global and used by all the tests;
- Packets are then allocated from the instantiated mempool, and tested
  on, by running some operations on them and manipulating data.

The tests introduced focus on testing DPDK dp_packets (where
source=DPBUF_DPDK), linked with a single or multiple mbufs, across
several operations, such as:
- dp_packet_put();
- dp_packet_shift();
- dp_packet_reserve();
- dp_packet_push_uninit();
- dp_packet_clear();
- dp_packet_equal();
- dp_packet_linear_data();
- And as a consequence of some of these, dp_packet_put_uninit() and
  dp_packet_resize__().

Finally, this has also been integrated with the new DPDK testsuite.
Thus, when running `$sudo make check-dpdk` one will also be running
these tests.

Signed-off-by: Tiago Lam <tiago.lam@intel.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
---
 tests/automake.mk              |  10 +-
 tests/dpdk-packet-mbufs.at     |   7 +
 tests/system-dpdk-testsuite.at |   1 +
 tests/test-dpdk-mbufs.c        | 619 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 636 insertions(+), 1 deletion(-)
 create mode 100644 tests/dpdk-packet-mbufs.at
 create mode 100644 tests/test-dpdk-mbufs.c

Patch

diff --git a/tests/automake.mk b/tests/automake.mk
index 49ceb41..f484f69 100644
--- a/tests/automake.mk
+++ b/tests/automake.mk
@@ -135,7 +135,8 @@  SYSTEM_DPDK_TESTSUITE_AT = \
 	tests/system-common-macros.at \
 	tests/system-dpdk-macros.at \
 	tests/system-dpdk-testsuite.at \
-	tests/system-dpdk.at
+	tests/system-dpdk.at \
+	tests/dpdk-packet-mbufs.at
 
 check_SCRIPTS += tests/atlocal
 
@@ -392,6 +393,10 @@  tests_ovstest_SOURCES = \
 	tests/test-vconn.c \
 	tests/test-aa.c \
 	tests/test-stopwatch.c
+if DPDK_NETDEV
+tests_ovstest_SOURCES += \
+	tests/test-dpdk-mbufs.c
+endif
 
 if !WIN32
 tests_ovstest_SOURCES += \
@@ -404,6 +409,9 @@  tests_ovstest_SOURCES += \
 endif
 
 tests_ovstest_LDADD = lib/libopenvswitch.la ovn/lib/libovn.la
+if DPDK_NETDEV
+tests_ovstest_LDFLAGS = $(AM_LDFLAGS) $(DPDK_vswitchd_LDFLAGS)
+endif
 
 noinst_PROGRAMS += tests/test-strtok_r
 tests_test_strtok_r_SOURCES = tests/test-strtok_r.c
diff --git a/tests/dpdk-packet-mbufs.at b/tests/dpdk-packet-mbufs.at
new file mode 100644
index 0000000..f28e4fc
--- /dev/null
+++ b/tests/dpdk-packet-mbufs.at
@@ -0,0 +1,7 @@ 
+AT_BANNER([OVS-DPDK dp_packet unit tests])
+
+AT_SETUP([OVS-DPDK dp_packet - mbufs allocation])
+AT_KEYWORDS([dp_packet, multi-seg, mbufs])
+AT_CHECK(ovstest test-dpdk-packet, [], [ignore], [ignore])
+
+AT_CLEANUP
diff --git a/tests/system-dpdk-testsuite.at b/tests/system-dpdk-testsuite.at
index 382f09e..f5edf58 100644
--- a/tests/system-dpdk-testsuite.at
+++ b/tests/system-dpdk-testsuite.at
@@ -23,3 +23,4 @@  m4_include([tests/system-common-macros.at])
 m4_include([tests/system-dpdk-macros.at])
 
 m4_include([tests/system-dpdk.at])
+m4_include([tests/dpdk-packet-mbufs.at])
diff --git a/tests/test-dpdk-mbufs.c b/tests/test-dpdk-mbufs.c
new file mode 100644
index 0000000..19081a3
--- /dev/null
+++ b/tests/test-dpdk-mbufs.c
@@ -0,0 +1,619 @@ 
+/*
+ * Copyright (c) 2018 Intel Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <rte_config.h>
+#include <rte_mbuf.h>
+#include <rte_mempool.h>
+#include <rte_errno.h>
+#include "dp-packet.h"
+#include "ovstest.h"
+#include "dpdk.h"
+#include "smap.h"
+
+#define N_MBUFS 1024
+#define MBUF_DATA_LEN 2048
+
+static int num_tests = 0;
+
+/* Global var to hold a mempool instance, "test-mp", used in all of the tests
+ * below. This instance is instantiated in dpdk_setup_eal_with_mp(). */
+static struct rte_mempool *mp;
+
+/* Test data used to fill the packets with data. Note that this isn't a string
+ * that repsents a valid packet, by any means. The pattern is generated in set_
+ * testing_pattern_str() and the sole purpose is to verify the data remains the
+ * same after inserting and operating on multi-segment mbufs. */
+static char *test_str;
+
+/* Asserts a dp_packet that holds a single mbuf, where:
+ * - nb_segs must be 1;
+ * - pkt_len must be equal to data_len which in turn must equal the provided
+ *   'pkt_len';
+ * - data_off must start at the provided 'data_ofs';
+ * - next must be NULL. */
+static void
+assert_single_mbuf(struct dp_packet *pkt, uint16_t data_ofs,
+                   uint32_t pkt_len) {
+    struct rte_mbuf *mbuf = CONST_CAST(struct rte_mbuf *, &pkt->mbuf);
+    ovs_assert(mbuf->nb_segs == 1);
+    ovs_assert(mbuf->data_off == data_ofs);
+    ovs_assert(mbuf->pkt_len == mbuf->data_len);
+    ovs_assert(mbuf->pkt_len == pkt_len);
+    ovs_assert(mbuf->next == NULL);
+}
+
+/* Asserts a dp_packet that holds multiple mbufs, where:
+ * - nb_segs must be > 1 and equal to the provided 'nb_segs';
+ * - data_off must start at the provided 'data_ofs';
+ * - pkt_len must be equal to the provided 'pkt_len' and the some of each
+ *   mbufs' 'data_len' must equal the pky_len;
+ * - next must not be NULL. */
+static void
+assert_multiple_mbufs(struct dp_packet *pkt, uint16_t data_ofs,
+                      uint32_t pkt_len, uint16_t nb_segs) {
+    struct rte_mbuf *mbuf = CONST_CAST(struct rte_mbuf *, &pkt->mbuf);
+    ovs_assert(mbuf->nb_segs > 1 && mbuf->nb_segs == nb_segs);
+    ovs_assert(mbuf->data_off == data_ofs);
+    ovs_assert(mbuf->pkt_len != mbuf->data_len);
+    ovs_assert(mbuf->next != NULL);
+    ovs_assert(mbuf->pkt_len == pkt_len);
+    /* Make sure pkt_len equals the sum of all segments data_len */
+    while (mbuf) {
+        pkt_len -= rte_pktmbuf_data_len(mbuf);
+        mbuf = mbuf->next;
+    }
+    ovs_assert(pkt_len == 0);
+}
+
+/* Asserts that the data existing in a packet, starting at 'data_ofs' of the
+ * first mbuf and of length 'data_len' matches the global test_str used,
+ * starting at index 0 and of the same length. */
+static void
+assert_data(struct dp_packet *pkt, uint16_t data_ofs, uint16_t data_len) {
+    struct rte_mbuf *mbuf = CONST_CAST(struct rte_mbuf *, &pkt->mbuf);
+
+    char *data = xmalloc(sizeof(*data) * data_len);
+    const char *rd = rte_pktmbuf_read(mbuf, data_ofs, data_len, data);
+
+    ovs_assert(rd != NULL);
+    ovs_assert(memcmp(rd, test_str, data_len) == 0);
+
+    free(data);
+}
+
+static void
+set_testing_pattern_str(void) {
+    static const char *pattern = "1234567890";
+
+    /* Pattern will be of size 5000B */
+    size_t test_str_len = 5000;
+    test_str = xmalloc(test_str_len * sizeof(*test_str) + 1);
+
+    for (int i = 0; i < test_str_len; i += strlen(pattern)) {
+        memcpy(test_str + i, pattern, strlen(pattern));
+    }
+
+    test_str[test_str_len] = 0;
+}
+
+static void
+dpdk_eal_init(void) {
+    struct smap other_config;
+    smap_init(&other_config);
+
+    printf("Initialising EAL...\n");
+    smap_add(&other_config, "dpdk-init", "true");
+    smap_add(&other_config, "dpdk-lcore-mask", "10");
+    smap_add(&other_config, "dpdk-socket-mem", "2048,0");
+    smap_add(&other_config, "dpdk-multi-seg-mbufs", "true");
+
+    dpdk_init(&other_config);
+}
+
+/* The allocation of mbufs here mimics the logic in dpdk_mp_create in
+ * netdev-dpdk.c. */
+static struct rte_mempool *
+dpdk_mp_create(char *mp_name) {
+    uint16_t mbuf_size, aligned_mbuf_size, mbuf_priv_data_len;
+
+    mbuf_size = sizeof (struct dp_packet) +
+                            MBUF_DATA_LEN + RTE_PKTMBUF_HEADROOM;
+    aligned_mbuf_size = ROUND_UP(mbuf_size, RTE_CACHE_LINE_SIZE);
+    mbuf_priv_data_len = sizeof(struct dp_packet) - sizeof(struct rte_mbuf) +
+                         (aligned_mbuf_size - mbuf_size);
+
+    struct rte_mempool *mpool = rte_pktmbuf_pool_create(
+                                    mp_name, N_MBUFS,
+                                    RTE_MEMPOOL_CACHE_MAX_SIZE,
+                                    mbuf_priv_data_len,
+                                    MBUF_DATA_LEN +
+                                    RTE_PKTMBUF_HEADROOM /* defaults 128B */,
+                                    SOCKET_ID_ANY);
+    if (mpool) {
+        printf("Allocated \"%s\" mempool with %u mbufs\n", mp_name, N_MBUFS);
+    } else {
+        printf("Failed mempool \"%s\" create request of %u mbufs: %s.\n",
+               mp_name, N_MBUFS, rte_strerror(rte_errno));
+
+        ovs_assert(mpool != NULL);
+    }
+
+    return mpool;
+}
+
+static void
+dpdk_setup_eal_with_mp(void) {
+    dpdk_eal_init();
+
+    mp = dpdk_mp_create("test-mp");
+    ovs_assert(mp != NULL);
+}
+
+static struct dp_packet *
+dpdk_mp_alloc_pkt(struct rte_mempool *mpool) {
+    struct rte_mbuf *mbuf = rte_pktmbuf_alloc(mpool);
+
+    struct dp_packet *pkt = (struct dp_packet *) mbuf;
+    pkt->source = DPBUF_DPDK;
+
+    return pkt;
+}
+
+/* Similar to dp_packet_put() in dp-packet.c, appends the 'size' bytes of data
+ * in 'p' to the tail end of 'pkt', allocating new mbufs if needed. */
+static struct dp_packet *
+dpdk_pkt_put(struct dp_packet *pkt, void *p, size_t size) {
+    uint16_t max_data_len, nb_segs;
+    struct rte_mbuf *mbuf, *fmbuf;
+
+    mbuf = CONST_CAST(struct rte_mbuf *, &pkt->mbuf);
+
+    /* All new allocated mbuf's max data len is the same */
+    max_data_len = mbuf->buf_len - mbuf->data_off;
+
+    /* Calculate # of needed mbufs to accomodate 'miss_len' */
+    nb_segs = size / max_data_len;
+    if (size % max_data_len) {
+        nb_segs += 1;
+    }
+
+    /* Proceed with the allocation of new mbufs */
+    mp = mbuf->pool;
+    fmbuf = mbuf;
+    mbuf = rte_pktmbuf_lastseg(mbuf);
+
+    for (int i = 0; i < nb_segs; i++) {
+        /* This takes care of initialising buf_len, data_len and other
+         * fields properly */
+        mbuf->next = rte_pktmbuf_alloc(mp);
+        if (!mbuf->next) {
+            printf("Problem allocating more mbufs for tests.\n");
+            rte_pktmbuf_free(mbuf);
+            fmbuf = NULL;
+            return NULL;
+        }
+
+        fmbuf->nb_segs += 1;
+
+        mbuf = mbuf->next;
+    }
+
+    dp_packet_mbuf_write(fmbuf, 0, size, p);
+
+    dp_packet_set_size(pkt, size);
+
+    return pkt;
+}
+
+static int
+test_dpdk_packet_insert_headroom(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Reserve 256B of header */
+    size_t str_len = 512;
+    dp_packet_reserve(pkt, str_len);
+    char *p = dp_packet_push_uninit(pkt, str_len);
+    ovs_assert(p != NULL);
+    /* Put the first 512B of "test_str" in the allocated header */
+    memcpy(p, test_str, str_len);
+
+    /* Check properties and data are as expected */
+    assert_single_mbuf(pkt, RTE_PKTMBUF_HEADROOM, str_len);
+    assert_data(pkt, 0, str_len);
+
+    dp_packet_uninit(pkt);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_insert_tailroom_and_headroom(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Reserve 256B of header */
+    size_t head_len = 256;
+    dp_packet_reserve(pkt, head_len);
+
+    /* Put the first 512B of "test_str" in the packet's header */
+    size_t str_len = 512;
+    char *p = dp_packet_put(pkt, test_str, str_len);
+    ovs_assert(p != NULL);
+
+    /* Fill the reserved 256B of header */
+    p = dp_packet_push_uninit(pkt, head_len);
+    ovs_assert(p != NULL);
+
+    /* Check properties and data are as expected */
+    assert_single_mbuf(pkt, RTE_PKTMBUF_HEADROOM, str_len + head_len);
+
+    /* Check the data inserted in the packet is correct */
+    char *data = xmalloc(sizeof(*data) * (str_len + head_len));
+    const char *rd = rte_pktmbuf_read(&pkt->mbuf, 0, str_len + head_len, data);
+    ovs_assert(rd != NULL);
+    /* Because of the headroom inserted, the data now begin at offset 256 */
+    ovs_assert(memcmp(rd + head_len, test_str, str_len) == 0);
+
+    dp_packet_uninit(pkt);
+    free(data);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_insert_tailroom_and_headroom_multiple_mbufs(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Put the first 2050B of "test_str" in the packet, just enought to
+     * allocate two mbufs */
+    size_t str_len = MBUF_DATA_LEN + 2;
+    pkt = dpdk_pkt_put(pkt, test_str, str_len);
+    ovs_assert(pkt != NULL);
+
+    /* Put the first 512B of "test_str" in the packet's header */
+    size_t tail_len = 512;
+    char *p = dp_packet_put(pkt, test_str, tail_len);
+    ovs_assert(p != NULL);
+
+    /* Fill the entire headroom */
+    size_t head_len = RTE_PKTMBUF_HEADROOM;
+    p = dp_packet_push_uninit(pkt, head_len);
+    ovs_assert(p != NULL);
+    /* Copy the data to the reserved headroom */
+    memcpy(p, test_str, head_len);
+
+    /* Check properties and data are as expected */
+    size_t pkt_len = head_len + str_len + tail_len;
+    uint16_t nb_segs = 2;
+    assert_multiple_mbufs(pkt, 0, pkt_len, nb_segs);
+
+    /* Check the data inserted in the packet is correct */
+    char *data = xmalloc(sizeof(*data) * pkt_len);
+    const char *rd = rte_pktmbuf_read(&pkt->mbuf, 0, pkt_len, data);
+    ovs_assert(rd != NULL);
+    ovs_assert(memcmp(rd, test_str, head_len) == 0);
+    ovs_assert(memcmp(rd + head_len + str_len, test_str, tail_len) == 0);
+
+    dp_packet_uninit(pkt);
+    free(data);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_insert_tailroom_multiple_mbufs(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Put the first 2050B of "test_str" in the packet, just enought to
+     * allocate two mbufs */
+    size_t str_len = MBUF_DATA_LEN + 2;
+    pkt = dpdk_pkt_put(pkt, test_str, str_len);
+    ovs_assert(pkt != NULL);
+
+    /* Put the first 2000B of "test_str" in the packet's end */
+    size_t tail_len = 2000;
+    char *p = dp_packet_put(pkt, test_str, tail_len);
+    ovs_assert(p != NULL);
+
+    /* Check properties and data are as expected */
+    char *data = xmalloc(sizeof(*data) * (str_len + tail_len));
+    const char *rd = rte_pktmbuf_read(&pkt->mbuf, 0, str_len + tail_len, data);
+    ovs_assert(rd != NULL);
+    /* Because of the headroom inserted, the data now begin at offset 256 */
+    ovs_assert(memcmp(rd + str_len, test_str, tail_len) == 0);
+
+    dp_packet_uninit(pkt);
+    free(data);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_insert_headroom_multiple_mbufs(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Put the first 2050B of "test_str" in the packet, just enought to
+     * allocate two mbufs */
+    size_t str_len = MBUF_DATA_LEN + 2;
+    pkt = dpdk_pkt_put(pkt, test_str, str_len);
+
+    /* Fill the entire headroom */
+    size_t head_len = RTE_PKTMBUF_HEADROOM;
+    char *p = dp_packet_push_uninit(pkt, head_len);
+    ovs_assert(p != NULL);
+
+    /* Check properties and data are as expected */
+    char *data = xmalloc(sizeof(*data) * (str_len + head_len));
+    const char *rd = rte_pktmbuf_read(&pkt->mbuf, 0, str_len + head_len, data);
+    ovs_assert(rd != NULL);
+    /* Because of the headroom inserted, the data is at offset 'head_len' */
+    ovs_assert(memcmp(rd + head_len, test_str, str_len) == 0);
+
+    dp_packet_uninit(pkt);
+    free(data);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_change_size(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Put enough data in the packet that spans three mbufs (5120B) */
+    size_t str_len = MBUF_DATA_LEN * 2 + 1024;
+    pkt = dpdk_pkt_put(pkt, test_str, str_len);
+    ovs_assert(pkt != NULL);
+
+    /* Check properties and data are as expected */
+    uint16_t nb_segs = 3;
+    assert_multiple_mbufs(pkt, RTE_PKTMBUF_HEADROOM, str_len, nb_segs);
+
+    /* Change the size of the packet to fit in a single mbuf */
+    dp_packet_clear(pkt);
+
+    assert_single_mbuf(pkt, RTE_PKTMBUF_HEADROOM, 0);
+
+    dp_packet_uninit(pkt);
+
+    return 0;
+}
+
+/* Shift() tests */
+
+static int
+test_dpdk_packet_shift_single_mbuf(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Put the first 1024B of "test_str" in the packet */
+    size_t str_len = 1024;
+    char *p = dp_packet_put(pkt, test_str, str_len);
+    ovs_assert(p != NULL);
+
+    /* Shift data right by 512B */
+    uint16_t shift_len = 512;
+    dp_packet_shift(pkt, shift_len);
+
+    /* Check properties and data are as expected */
+    assert_single_mbuf(pkt, RTE_PKTMBUF_HEADROOM + shift_len, str_len);
+    assert_data(pkt, 0, str_len);
+
+    dp_packet_uninit(pkt);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_shift_multiple_mbufs(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Put the data in "test_str" in the packet */
+    size_t str_len = strlen(test_str);
+    pkt = dpdk_pkt_put(pkt, test_str, str_len);
+    ovs_assert(pkt != NULL);
+
+    /* Check properties and data are as expected */
+    uint16_t nb_segs = 3;
+    assert_multiple_mbufs(pkt, RTE_PKTMBUF_HEADROOM, str_len, nb_segs);
+
+    /* Shift data right by 1024B */
+    uint16_t shift_len = 1024;
+    dp_packet_shift(pkt, shift_len);
+
+    /* Check the data has been inserted correctly */
+    assert_multiple_mbufs(pkt, RTE_PKTMBUF_HEADROOM + shift_len, str_len,
+                          nb_segs);
+    assert_data(pkt, 0, str_len);
+
+    dp_packet_uninit(pkt);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_shift_right_then_left(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Put the first 1024B of "test_str" in the packet */
+    size_t str_len = strlen(test_str);
+    pkt = dpdk_pkt_put(pkt, test_str, str_len);
+    ovs_assert(pkt != NULL);
+
+    /* Shift data right by 1024B */
+    int16_t shift_len = 1024;
+    dp_packet_shift(pkt, 1024);
+
+    /* Check properties and data are as expected */
+    uint16_t nb_segs = 3;
+    assert_multiple_mbufs(pkt, RTE_PKTMBUF_HEADROOM + shift_len, str_len,
+                          nb_segs);
+
+    /* Shift data left by 512B */
+    dp_packet_shift(pkt, -shift_len);
+
+    /* We negative shift_len (-shift_len) since  */
+    assert_multiple_mbufs(pkt, RTE_PKTMBUF_HEADROOM, str_len,
+                          nb_segs);
+    assert_data(pkt, 0, str_len);
+
+    dp_packet_uninit(pkt);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_equal_multiple_mbufs(void) {
+    /* Allocate first packet for comparison */
+    struct dp_packet *pkt1 = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt1 != NULL);
+
+    /* Put the data in "test_str" in the packet */
+    size_t str_len = strlen(test_str);
+    pkt1 = dpdk_pkt_put(pkt1, test_str, str_len);
+    ovs_assert(pkt1 != NULL);
+
+    /* Check properties and data are as expected */
+    uint16_t nb_segs = 3;
+    assert_multiple_mbufs(pkt1, RTE_PKTMBUF_HEADROOM, str_len, nb_segs);
+
+    /* Allocate second packet for comparison */
+    struct dp_packet *pkt2 = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt2 != NULL);
+
+    /* Put the data in "test_str" in the packet */
+    pkt2 = dpdk_pkt_put(pkt2, test_str, str_len);
+    ovs_assert(pkt2 != NULL);
+
+    /* Check properties and data are as expected */
+    assert_multiple_mbufs(pkt2, RTE_PKTMBUF_HEADROOM, str_len, nb_segs);
+
+    ovs_assert(dp_packet_equal(pkt1, pkt2));
+
+    dp_packet_uninit(pkt1);
+    dp_packet_uninit(pkt2);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_single_mbuf_to_linear_malloc(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Put the first 1024B of "test_str" in the packet */
+    size_t str_len = 1024;
+    char *p = dp_packet_put(pkt, test_str, str_len);
+    ovs_assert(p != NULL);
+
+    char *paddr = rte_pktmbuf_mtod(&pkt->mbuf, char *);
+    /* Convert DPBUF_DPDK packet in a linear DPBUF_MALLOC packet */
+    char *d = dp_packet_linear_data(pkt);
+
+    /* Check properties and data are as expected, namely:
+     * - The packet is still a DPBUF_DPDK packet;
+     * - The returned address is still an address in the mbuf;
+     * - Single mbuf properties still hold. */
+    ovs_assert(d != NULL);
+    ovs_assert(pkt->source == DPBUF_DPDK);
+    ovs_assert(d == paddr);
+    assert_single_mbuf(pkt, RTE_PKTMBUF_HEADROOM, str_len);
+
+    dp_packet_uninit(pkt);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet_multiple_mbufs_to_linear_malloc(void) {
+    struct dp_packet *pkt = dpdk_mp_alloc_pkt(mp);
+    ovs_assert(pkt != NULL);
+
+    /* Put the data in "test_str" in the packet */
+    size_t str_len = strlen(test_str);
+    pkt = dpdk_pkt_put(pkt, test_str, str_len);
+    ovs_assert(pkt != NULL);
+
+    /* Check properties and data are as expected */
+    uint16_t nb_segs = 3;
+    assert_multiple_mbufs(pkt, RTE_PKTMBUF_HEADROOM, str_len, nb_segs);
+
+    char *paddr = rte_pktmbuf_mtod(&pkt->mbuf, char *);
+    /* Convert DPBUF_DPDK packet in a linear DPBUF_MALLOC packet */
+    char *d = dp_packet_linear_data(pkt);
+
+    /* Check properties and data are as expected, namely:
+     * - The packet is now a DPBUF_MALLOC packet;
+     * - The returned address is a new address;
+     * - All expected data is now in the new address. */
+    ovs_assert(d != NULL);
+    ovs_assert(pkt->source == DPBUF_MALLOC);
+    ovs_assert(d != paddr);
+    ovs_assert(memcmp(d, test_str, str_len) == 0);
+
+    dp_packet_uninit(pkt);
+
+    return 0;
+}
+
+static int
+test_dpdk_packet(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
+{
+    /* Setup environment for tests */
+    dpdk_setup_eal_with_mp();
+    set_testing_pattern_str();
+
+    test_dpdk_packet_insert_headroom();
+    num_tests++;
+    test_dpdk_packet_insert_tailroom_and_headroom();
+    num_tests++;
+    test_dpdk_packet_insert_tailroom_multiple_mbufs();
+    num_tests++;
+    test_dpdk_packet_insert_headroom_multiple_mbufs();
+    num_tests++;
+    test_dpdk_packet_insert_tailroom_and_headroom_multiple_mbufs();
+    num_tests++;
+    test_dpdk_packet_change_size();
+    num_tests++;
+    test_dpdk_packet_shift_single_mbuf();
+    num_tests++;
+    test_dpdk_packet_shift_multiple_mbufs();
+    num_tests++;
+    test_dpdk_packet_shift_right_then_left();
+    num_tests++;
+    test_dpdk_packet_equal_multiple_mbufs();
+    num_tests++;
+    test_dpdk_packet_single_mbuf_to_linear_malloc();
+    num_tests++;
+    test_dpdk_packet_multiple_mbufs_to_linear_malloc();
+    num_tests++;
+
+    printf("Executed %d tests\n", num_tests);
+
+    exit(0);
+}
+
+OVSTEST_REGISTER("test-dpdk-packet", test_dpdk_packet);