From patchwork Mon Jun 11 16:21:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lam, Tiago" X-Patchwork-Id: 927783 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=openvswitch.org (client-ip=140.211.169.12; helo=mail.linuxfoundation.org; envelope-from=ovs-dev-bounces@openvswitch.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 414JPG41x3z9rvt for ; Tue, 12 Jun 2018 02:29:06 +1000 (AEST) Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id E87EC137B; Mon, 11 Jun 2018 16:22:22 +0000 (UTC) X-Original-To: ovs-dev@openvswitch.org Delivered-To: ovs-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id DD061137A for ; Mon, 11 Jun 2018 16:22:21 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 7BD0D718 for ; Mon, 11 Jun 2018 16:22:20 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Jun 2018 09:22:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,502,1520924400"; d="scan'208";a="62210856" Received: from silpixa00399125.ir.intel.com ([10.237.223.34]) by fmsmga004.fm.intel.com with ESMTP; 11 Jun 2018 09:22:18 -0700 From: Tiago Lam To: ovs-dev@openvswitch.org Date: Mon, 11 Jun 2018 17:21:30 +0100 Message-Id: <1528734090-220990-15-git-send-email-tiago.lam@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1528734090-220990-1-git-send-email-tiago.lam@intel.com> References: <1528734090-220990-1-git-send-email-tiago.lam@intel.com> X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: i.maximets@samsung.com Subject: [ovs-dev] [PATCH v8 13/13] dpdk-tests: Add test coverage for multi-seg mbufs. X-BeenThere: ovs-dev@openvswitch.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ovs-dev-bounces@openvswitch.org Errors-To: ovs-dev-bounces@openvswitch.org 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(); - 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 --- tests/automake.mk | 10 +- tests/dpdk-packet-mbufs.at | 7 + tests/system-dpdk-testsuite.at | 1 + tests/test-dpdk-mbufs.c | 518 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 535 insertions(+), 1 deletion(-) create mode 100644 tests/dpdk-packet-mbufs.at create mode 100644 tests/test-dpdk-mbufs.c diff --git a/tests/automake.mk b/tests/automake.mk index c420b29..74841a8 100644 --- a/tests/automake.mk +++ b/tests/automake.mk @@ -134,7 +134,8 @@ 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 @@ -384,6 +385,10 @@ 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 += \ @@ -396,6 +401,9 @@ 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..6c3bfdc --- /dev/null +++ b/tests/test-dpdk-mbufs.c @@ -0,0 +1,518 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include +#include "dp-packet.h" +#include "ovstest.h" +#include "dpdk.h" +#include "smap.h" + +#define N_MBUFS 1024 +#define MBUF_DATA_LEN 2048 + +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[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); +} + +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); + + /* Adjust size of intermediate mbufs from current tail to end */ + size_t pkt_len = size; + while (fmbuf && pkt_len > 0) { + fmbuf->data_len = MIN(pkt_len, fmbuf->buf_len - fmbuf->data_off); + pkt_len -= fmbuf->data_len; + + fmbuf = fmbuf->next; + } + + 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); + + /* 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); + /* Allocate extra 256B of header */ + size_t head_len = 256; + p = dp_packet_push_uninit(pkt, head_len); + ovs_assert(p != NULL); + + /* Check properties and data are as expected */ + assert_single_mbuf(pkt, 0, str_len + head_len); + + /* Check the data inserted in the packet is correct */ + char 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); + + 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); + + /* Allocate extra 256B of header */ + size_t head_len = 256; + 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[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); + + 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[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); + + 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); + + /* Push the first 2000B of "test_str" in the packet's header */ + size_t head_len = 2000; + char *p = dp_packet_push_uninit(pkt, head_len); + ovs_assert(p != NULL); + + /* Check properties and data are as expected */ + char 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); + + 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(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++; + + printf("Executed %d tests\n", num_tests); + + exit(0); +} + +OVSTEST_REGISTER("test-dpdk-packet", test_dpdk_packet);