inteldpdk(Intel? Data Plane Development Kit)? 是intel開發的一個關于網絡數據包處理轉發的套件。官網：http://dpdk.org

1、系統環境要求

1）intel網卡

$lspci |grep Ethernet??? //查看網卡，配置2張網卡

2）CPU核數

$cat /proc/cpuinfo???? //查看系統有多少個cpu，支持多少硬件線程，配置2個

3）系統內存

$cat /proc/meminfo?? //系統內存支持hugepage技術

4）查看hpet

$grep hpet/proc/timer_list?? //需支持hpet

如無顯示，需設置BIOS：Advanced -> PCH-IO Configuration -> High Precision Timer ->(Change from Disabled to Enabled if necessary)

Virtualbox上虛擬機Ubuntu如何設置BIOS？

5）系統內核

$uname –a?? //虛擬機 Ubunut（主機名c） GNU/Linux x86_64

//4.2.0-16.generic（要求Kernelversion >= 2.6.34，支持hugepage）

// Kernel需支持UIO、HUGETLBFS、PROC_PAGE_MONITOR

6）組件庫

$gcc –verison?? //要求gcc4.5.x以上，本機gcc5.2.1；

$sudo apt-get installglibc++

$ldd –version? //要求glibc >= 2.7?，本機2.2.1

如何編譯安裝glibc（下載地址：http://ftp.gnu.org/gnu/glibc/）升級？

$sudo apt-get install libpcap-dev?? //安裝pcap

若要使用libpcap驅動分析，修改配置文件：$sudo gedit config/common_linuxapp

?????? CONFIG_RTE_LIBRTE_PMD_PCAP=n 修改為：CONFIG_RTE_LIBRTE_PMD_PCAP=y

$sudo apt-get installpython? //安裝python

$sudo apt-get installpython-dev

2、DPDK編譯安裝

1）GIT下載

?$sudo apt-get install git? //安裝git下載

?$git clone git://dpdk.org/dpdk? //git到/home/c/dpdk目錄

配置環境變量：$sudo gedit/etc/profile

export? RTE_SDK=/home/c/dpdk

export? RTE_TARGET= x86_64-native-linuxapp-gcc

2）腳本安裝：

$cd dpdk

$./tools/setup.sh???

//step1:14 ?x86_64-native-linuxapp-gcc

? RTE_SDK=/home/c/dpdk

? RTE_TARGET= x86_64-native-linuxapp-gcc

//step2:17Insert IGB UIO module

//step3:20Setup hugepage mappings for non-NUMA systems?輸入64或128

//step4:23Bind Ethernet device to IGB UIO module

提前關閉網卡：$ifconfig enp0s8 down?//enp0s8網卡接口名，地址00.08.0

查看PCI地址；$lspci?? //找網卡地址

輸入PCI地址：00.08.0

//step5:22Display current Ethernet device settings

//step6:26Run test application($RTE_TARGET/app/test)

輸入bitmask:0x3?

設置CPU的掩碼，根據CPU的個數來設置，比如如果只有2個cpu，按照16進制掩碼就選擇 0x3

提示HPET不可用，需要BIOS設置。

3）手動安裝：

——編譯

$makeinstall T=x86_64-native-linuxapp-gcc

——配置大頁內存（非NUMA）

$echo 128> /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages

$mkdir/mnt/huge

$mount -thugetlbfs nodev /mnt/huge

$cat/proc/meminfo | grep Huge?? //查看大頁內存狀態

——安裝igb_uio驅動

$modprobeuio

$insmodx86_64-native-linuxapp-gcc/kmod/igb_uio.ko

——綁定網卡

$./tools/dpdk_nic_bind.py--status

$ ./tools/dpdk_nic_bind.py -b igb_uio 00.03.0? //網卡1的PCI地址，可用eth1接口名

$./tools/dpdk_nic_bind.py-b igb_uio 00.08.0?? //網卡2的PCI地址，可用eth2接口名

——運行testpmd測試程序

$ ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x3 -n 2 -- -i

4）運行示例

$cdexamples/helloworld

$make

$./build/helloworld-c 0xf -n 2

參數解釋：c代表用幾個core， 采用bit位設置，如 f 代碼 二進制?1111 相當于 從0到3這4個core都采用；n 表示設置內存的通道數。

3、DPDK示例代碼

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> #include <inttypes.h> #include <sys/types.h> #include <sys/queue.h> #include <netinet/in.h> #include <setjmp.h> #include <stdarg.h> #include <ctype.h> #include <errno.h> #include <getopt.h> #include <unistd.h>#include <rte_common.h> #include <rte_log.h> #include <rte_memory.h> #include <rte_memcpy.h> #include <rte_memzone.h> #include <rte_eal.h> #include <rte_per_lcore.h> #include <rte_launch.h> #include <rte_atomic.h> #include <rte_cycles.h> #include <rte_prefetch.h> #include <rte_lcore.h> #include <rte_per_lcore.h> #include <rte_branch_prediction.h> #include <rte_interrupts.h> #include <rte_pci.h> #include <rte_random.h> #include <rte_debug.h> #include <rte_ether.h> #include <rte_ethdev.h> #include <rte_ring.h> #include <rte_mempool.h> #include <rte_mbuf.h>#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1#define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM) #define NB_MBUF 8192#define MAX_PKT_BURST 32 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us *//** Configurable number of RX/TX ring descriptors*/ #define RTE_TEST_RX_DESC_DEFAULT 128 #define RTE_TEST_TX_DESC_DEFAULT 512static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;/* ethernet addresses of ports */static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];/* mask of enabled ports */static uint32_t l2fwd_enabled_port_mask = 0;/* list of enabled ports */static uint32_t iweb_dst_ports[RTE_MAX_ETHPORTS];static unsigned int l2fwd_rx_queue_per_lcore = 1;struct mbuf_table {unsigned len;struct rte_mbuf *m_table[MAX_PKT_BURST];};#define MAX_RX_QUEUE_PER_LCORE 16 #define MAX_TX_QUEUE_PER_PORT 16struct lcore_queue_conf {unsigned n_rx_port;unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];} __rte_cache_aligned;struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];static const struct rte_eth_conf port_conf = {.rxmode = {.split_hdr_size = 0,.header_split = 0, /**< Header Split disabled */.hw_ip_checksum = 0, /**< IP checksum offload disabled */.hw_vlan_filter = 0, /**< VLAN filtering disabled */.jumbo_frame = 0, /**< Jumbo Frame Support disabled */.hw_strip_crc = 0, /**< CRC stripped by hardware */},.txmode = {.mq_mode = ETH_MQ_TX_NONE,},};struct rte_mempool * l2fwd_pktmbuf_pool = NULL;/* Per-port statistics struct */struct l2fwd_port_statistics {uint64_t tx;uint64_t rx;uint64_t dropped;} __rte_cache_aligned;struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];/* A tsc-based timer responsible for triggering statistics printout */ #define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */ #define MAX_TIMER_PERIOD 86400 /* 1 day max */ static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds *//* main processing loop */static voidl2fwd_main_loop(void){struct rte_mbuf *pkts_burst[MAX_PKT_BURST];struct rte_mbuf *m;unsigned lcore_id;uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;unsigned i, j, portid, nb_rx;struct lcore_queue_conf *qconf;const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;prev_tsc = 0;timer_tsc = 0;lcore_id = rte_lcore_id();qconf = &lcore_queue_conf[lcore_id];if (qconf->n_rx_port == 0) {RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);return;}//RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);for (i = 0; i < qconf->n_rx_port; i++) {portid = qconf->rx_port_list[i];RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id, portid);}while (1) {cur_tsc = rte_rdtsc(); #if 0/** TX burst queue drain*/diff_tsc = cur_tsc - prev_tsc;if (unlikely(diff_tsc > drain_tsc)) {for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {if (qconf->tx_mbufs[portid].len == 0)continue;l2fwd_send_burst(&lcore_queue_conf[lcore_id],qconf->tx_mbufs[portid].len,(uint8_t) portid);qconf->tx_mbufs[portid].len = 0;}/* if timer is enabled */if (timer_period > 0) {/* advance the timer */timer_tsc += diff_tsc;/* if timer has reached its timeout */if (unlikely(timer_tsc >= (uint64_t) timer_period)) {/* do this only on master core */if (lcore_id == rte_get_master_lcore()) {print_stats();/* reset the timer */timer_tsc = 0;}}}prev_tsc = cur_tsc;} #endif/** Read packet from RX queues*/usleep(1);for (i = 0; i < qconf->n_rx_port; i++) {portid = qconf->rx_port_list[i];nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,pkts_burst, MAX_PKT_BURST);if (nb_rx <= 0){//printf("xxxxxxxxxxxxxxxxxxxx\n");break;}port_statistics[portid].rx += nb_rx;printf("rcv packets %d\n", port_statistics[portid].rx);printf("this timer packets is %d\n", nb_rx);for (j = 0; j < nb_rx; j++) {m = pkts_burst[j];rte_pktmbuf_free(m);//printf("packet %d\n", j);//printf("rcv packets %d\n", port_statistics[portid].rx);}}}}static int l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy){l2fwd_main_loop();return 0;}/* Parse the argument given in the command line of the application */ static int iweb_parse_args(int argc, char **argv) { }int main(__attribute__((unused)) int argc, __attribute__((unused)) char **argv) {struct lcore_queue_conf *qconf;struct rte_eth_dev_info dev_info;int ret;uint8_t nb_ports;uint8_t nb_ports_available;uint8_t portid, last_port;unsigned lcore_id, rx_lcore_id;unsigned nb_ports_in_mask = 0;/* init EAL */ret = rte_eal_init(argc, argv);if (ret < 0){rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");}argc -= ret;argv += ret;/* parse application arguments (after the EAL ones) */ret = iweb_parse_args(argc, argv);if (ret < 0){rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");}/* create the mbuf pool */l2fwd_pktmbuf_pool = rte_mempool_create("mbuf_pool", NB_MBUF, MBUF_SIZE, 32,sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init, NULL,rte_pktmbuf_init, NULL, rte_socket_id(), 0);if (l2fwd_pktmbuf_pool == NULL){rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");}nb_ports = rte_eth_dev_count();if (nb_ports != 1){rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");}/* reset l2fwd_dst_ports */iweb_dst_ports[0] = 0; /* 這里其實只有一個port */rx_lcore_id = 0;qconf = NULL;qconf = &lcore_queue_conf[rx_lcore_id];qconf->rx_port_list[0] = portid;qconf->n_rx_port = 1;printf("Initializing port %u... ", (unsigned) portid);fflush(stdout);ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);if (ret < 0){rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n", ret, (unsigned)portid);}fflush(stdout);ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd, rte_eth_dev_socket_id(portid),NULL,l2fwd_pktmbuf_pool);if (ret < 0){rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n", ret, (unsigned)portid);}/* init one TX queue on each port */fflush(stdout);ret = rte_eth_tx_queue_setup(portid, 0, nb_txd, rte_eth_dev_socket_id(portid), NULL);if (ret < 0){rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n", ret, (unsigned)portid);}/* Start device */ret = rte_eth_dev_start(portid);if (ret < 0){rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n", ret, (unsigned)portid);}printf("done: \n");/* 打開網卡的混雜模式 */rte_eth_promiscuous_enable(portid);/* launch per-lcore init on every lcore */rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);RTE_LCORE_FOREACH_SLAVE(lcore_id){if (rte_eal_wait_lcore(lcore_id) < 0){return -1;}}return 0; }

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