Intel DPDK包部署试验

inteldpdk(Intel® Data Plane Development Kit)  是intel开发的一个关于网络数据包处理转发的套件。官网：http://dpdk.org

1、系统环境要求

1）intel网卡

$lspci |grep Ethernet    //查看网卡，配置2张网卡

2）CPU核数

$cat /proc/cpuinfo     //查看系统有多少个cpu，支持多少硬件线程，配置2个

3）系统内存

$cat /proc/meminfo   //系统内存支持hugepage技术

4）查看hpet

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

如无显示，需设置BIOS：Advanced -> PCH-IO Configuration -> High Precision Timer ->(Change from Disabled to Enabled if necessary)

Virtualbox上虚拟机Ubuntu如何设置BIOS？

5）系统内核

$uname –a   //虚拟机 Ubunut（主机名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）组件库

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

$sudo apt-get installglibc++

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

如何编译安装glibc（下载地址：http://ftp.gnu.org/gnu/glibc/）升级？

$sudo apt-get install libpcap-dev   //安装pcap

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

       CONFIG_RTE_LIBRTE_PMD_PCAP=n 修改为：CONFIG_RTE_LIBRTE_PMD_PCAP=y

$sudo apt-get installpython  //安装python

$sudo apt-get installpython-dev

2、DPDK编译安装

1）GIT下载

 $sudo apt-get install git  //安装git下载

 $git clone git://dpdk.org/dpdk  //git到/home/c/dpdk目录

配置环境变量：$sudo gedit/etc/profile

export  RTE_SDK=/home/c/dpdk

export  RTE_TARGET= x86_64-native-linuxapp-gcc

2）脚本安装：

$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 输入64或128

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

提前关闭网卡：$ifconfig enp0s8 down //enp0s8网卡接口名，地址00.08.0

查看PCI地址；$lspci   //找网卡地址

输入PCI地址：00.08.0

//step5:22Display current Ethernet device settings

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

输入bitmask:0x3 

设置CPU的掩码，根据CPU的个数来设置，比如如果只有2个cpu，按照16进制掩码就选择 0x3

提示HPET不可用，需要BIOS设置。

3）手动安装：

——编译

$makeinstall T=x86_64-native-linuxapp-gcc

——配置大页内存（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   //查看大页内存状态

——安装igb_uio驱动

$modprobeuio

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

——绑定网卡

$./tools/dpdk_nic_bind.py--status

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

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

——运行testpmd测试程序

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

4）运行示例

$cdexamples/helloworld

$make

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

参数解释：c代表用几个core， 采用bit位设置，如 f 代码 二进制 1111 相当于 从0到3这4个core都采用；n 表示设置内存的通道数。

3、DPDK示例代码

#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 512 static 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 16 struct 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 void l2fwd_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){} intmain(__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;  /* 这里其实只有一个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");        /* 打开网卡的混杂模式 */    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;}