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背景

上海疫情期间需要在家办公， 任务基于DPDK环境开发，
家里没有双路CPU的志强E5服务器， 更没有82599，X710多端口的网卡，小区封闭，快递停运，无从获取。

我想到了一个 Good idea!
虚拟机模拟实现.

在DPDK 源代码里面发现有 对Virtio网卡的支持。

在 KVM 虚拟机内虚拟4个 Virtio 互联网卡，以便于开发。

示意

在物理机 创建网桥镜像

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# 创建网桥
brctl addbr virtio1
brctl addbr virtio2
brctl addbr virtio3
brctl addbr virtio4

# 设置镜像
brctl setageing virtio1 0
brctl setageing virtio2 0
brctl setageing virtio3 0
brctl setageing virtio4 0

# 启动
ifconfig virtio1  up
ifconfig virtio2  up
ifconfig virtio3  up
ifconfig virtio4  up

安装开发机环境

先在KVM中安装一个CentOS 7.4， 公司的业务OS选型就是7.4
1个管理网卡
4个virtio网卡

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root@debian:~/kvm# cat kvm_install_centos7.sh
#!/bin/bash
OS_DOMAIN='centos7'
OS_DISK="/home/OS_Disk_Image/${OS_DOMAIN}.disk"
OS_IMG_DIR='/mnt/data/08_各种镜像/OS_Linux/'

virsh  destroy  $OS_DOMAIN  > /dev/null 2>&1
virsh  undefine $OS_DOMAIN  > /dev/null 2>&1

rm -rf $OS_DISK
rm -rf /var/log/libvirt/qemu/${OS_DOMAIN}.log
rm -rf /etc/libvirt/storage

virt-install                                               \
--virt-type=kvm                                            \
--os-type=linux                                            \
--os-variant=centos7                                       \
--name ${OS_DOMAIN}                                        \
--cpu=host-passthrough                                     \
--accelerate                                               \
--autostart                                                \
--ram 8192                                                 \
--noautoconsole                                            \
--vcpus sockets=1,cores=4,threads=2                        \
--network mac=12:34:56:78:90:A4,bridge=br0,model=e1000     \
--network mac=12:34:56:78:90:A5,bridge=virtio1,model=virtio    \
--network mac=12:34:56:78:90:A6,bridge=virtio2,model=virtio    \
--network mac=12:34:56:78:90:A7,bridge=virtio3,model=virtio    \
--network mac=12:34:56:78:90:A8,bridge=virtio4,model=virtio    \
--graphics vnc,listen=0.0.0.0,port=5924,password=chunli    \
--disk path=${OS_DISK},size=60,format=raw,bus=virtio       \
--cdrom     ${OS_IMG_DIR}/CentOS-7-1708/CentOS-7-x86_64-DVD-1708.iso \

root@debian:~/kvm#

virtio 专用脚本

为了便于使用 查看、巨页，绑定系列脚本

开发机的 virtio 网卡 需要特别的设置

网卡信息脚本

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eth_info=$(lspci -Dvmmnnk | awk -v RS="\n\n" '/Virtio network device/{print gensub(/:\s([^\n]*)/, cnt++ "=\"\\1\"", "g");} END{print "dev_cnt=" cnt;}')

eval $eth_info

printf "%-14s%-15s%-10s%-16s %s\n" "Slot" "IF" "UP" "Driver" "Desc"

for ((i=0; i<$dev_cnt; i++))
do
 eval "Interface$i=---"
 eval "Linking$i=-"
 eval "dev_net_path=/sys/bus/pci/devices/\$Slot$i/"
 if [ -e $dev_net_path ]
 then
    find $dev_net_path/ | grep -w carrier > /dev/null 2>&1
    if [ 0 -eq $? ]
    then
        virtioX=$(dirname $(dirname $(dirname $(find $dev_net_path -name carrier))))
        eval "Driver$i=$(basename $(readlink $(echo $virtioX/driver)))"
        eval "Interface$i=$(basename $(dirname $(find $dev_net_path -name carrier)))"
        eval "read Linking$i < $(find $dev_net_path -name carrier)"
    fi


 fi
 eval "printf '%-14s%-15s%-10s%-16s %s\n' \$Slot$i \$Interface$i \$Linking$i \$Driver$i \"\$Device$i\""
done

巨页设置

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#!/bin/bash


cd $(dirname $0)

# HUGEPAGES params
HUGEPGSZ_IN_KB=`cat /proc/meminfo  | grep Hugepagesize | cut -d : -f 2 | tr -d ' '`
NUMA_HUGE_PAGE_CNT=6

echo HUGEPGSZ_IN_KB $HUGEPGSZ_IN_KB
echo NUMA_HUGE_PAGE_CNT $NUMA_HUGE_PAGE_CNT

function LOG_ERR
{
    echo -e "\033[1;31;40m"$*"\033[0m"
}

function LOG_WAR
{
    echo -e "\033[1;33;40m"$*"\033[0m"
}

function LOG_INFO
{
    echo -e "\033[1;32;40m"$*"\033[0m"
}

function LOG_DEBUG
{
    echo -e "\033[1;30;40m"$*"\033[0m"
}

function step
{
    if [ $? -ne 0 ]
    then
        LOG_ERR "previous action failed, exit."
        exit
    fi

    echo -n "step $1: "

    shift
    eval $*
}

#
# Unloads igb_uio.ko.
#
remove_igb_uio_module()
{
    /sbin/lsmod | grep -s igb_uio > /dev/null
    if [ $? -eq 0 ] ; then
         /sbin/rmmod igb_uio
    fi

    LOG_INFO "Unloading any existing DPDK UIO module"
}

#
# Loads new igb_uio.ko (and uio module if needed).
#
load_igb_uio_module()
{
    modprobe igb_uio
    if [ $? -ne 0 ] ; then
        LOG_ERR "## ERROR: Could not load kmod/igb_uio.ko."
        exit
    fi
    LOG_INFO "Load DPDK UIO module Successful!"
}

#
# Unloads the rte_kni.ko module.
#
remove_kni_module()
{
    /sbin/lsmod | grep -s rte_kni > /dev/null
    if [ $? -eq 0 ] ; then
         /sbin/rmmod rte_kni
    fi

    LOG_INFO "Unloading any existing DPDK KNI module"
}

#
# Loads the rte_kni.ko module.
#
load_kni_module()
{
    modprobe rte_kni
    if [ $? -ne 0 ] ; then
        LOG_ERR "## ERROR: Could not load kmod/rte_kni.ko."
        exit
    fi
    LOG_INFO "Load  DPDK KNI module Successful!"
}

#
# Removes all reserved hugepages.
#
clear_huge_pages()
{
    echo > .echo_tmp
    for d in /sys/devices/system/node/node? ; do
        echo "echo 0 > $d/hugepages/hugepages-${HUGEPGSZ_IN_KB}/nr_hugepages" >> .echo_tmp
    done

    sh .echo_tmp
    rm -f .echo_tmp

    remove_mnt_huge

    LOG_INFO "Remove currently reserved hugepages, Unmounting /mnt/huge and removing directory"
}

#
# Creates hugepage filesystem.
#
create_mnt_huge()
{
    mkdir -p /mnt/huge

    grep -s '/mnt/huge' /proc/mounts > /dev/null
    if [ $? -ne 0 ] ; then
         mount -t hugetlbfs nodev /mnt/huge
    fi
}

#
# Removes hugepage filesystem.
#
remove_mnt_huge()
{
    grep -s '/mnt/huge' /proc/mounts > /dev/null
    if [ $? -eq 0 ] ; then
         umount /mnt/huge
    fi

    if [ -d /mnt/huge ] ; then
         rm -R /mnt/huge
    fi
}

# Creates hugepages on specific NUMA nodes.
#
set_numa_pages()
{
    # clear_huge_pages

    Pages=$1

    echo > .echo_tmp
    for d in /sys/devices/system/node/node? ; do
        node=$(basename $d)
        echo "echo $Pages > $d/hugepages/hugepages-${HUGEPGSZ_IN_KB}/nr_hugepages" >> .echo_tmp
    done

    sh .echo_tmp

    rm -f .echo_tmp

    create_mnt_huge

    LOG_INFO "Reserving hugepages: $Pages, Creating /mnt/huge and mounting as hugetlbfs"
}

#
# show hugepages infos from /sys/devices/system/node/node0/hugepages/hugepages-1048576kB/nr_hugepages and
# /proc/meminfo.
#
show_numa_pages()
{
    LOG_INFO "show hugepages config:"

    LOG_WAR "cmdline:"
    echo "$(cat /proc/cmdline)"

    LOG_WAR "hugepages info:"
    for d in /sys/devices/system/node/node? ; do
        pagesPath=$d/hugepages/hugepages-${HUGEPGSZ_IN_KB}/nr_hugepages
        echo $pagesPath "$(cat $pagesPath)"
    done

    LOG_WAR "hugepages in /proc/meminfo:"
    echo "$(grep -ri huge /proc/meminfo)"
}

#
# Uses dpdk-devbind.py to move devices to work with igb_uio
#
bind_devices_to_igb_uio()
{
    if [ -d /sys/module/igb_uio ]; then
        PCI_PATH=$1
        ${RTE_SDK}/usertools/dpdk-devbind.py --force -b igb_uio $PCI_PATH || exit 1
        LOG_INFO "bind $PCI_PATH to igb_uio Successfully!"
    else
        LOG_ERR "# Please load the 'igb_uio' kernel module before querying or "
        LOG_ERR "# adjusting device bindings"
    fi
}

#
# Uses dpdk-devbind.py to move devices to work with kernel drivers again
#
unbind_devices()
{
    DRV=$1
    PCI_PATH=$2
    ${RTE_SDK}/usertools/dpdk-devbind.py -b $DRV $PCI_PATH || LOG_ERR "[Fail] unbind"
    LOG_INFO "unbind $PCI_PATH, bind to driver $DRV Successfully !"
}

get_eth_original_info_by_name()
{
    dst_eth_name=$1
    pci_addr_of_this_eth=""
    driver_of_this_eth=""

    for((i=0; i<$dev_cnt; i++))
    do
        eval "eth_name_i=\$if$i"

        if [ -z $eth_name_i ]
        then
          return 1
        fi

        if [ $eth_name_i == $dst_eth_name ]
        then
            eval "pci_addr_of_this_eth=\$bus$i"
            eval "driver_of_this_eth=\$driver$i"
            return 0
        fi
    done
    return 1
}

#
# ret info at driver_of_this_eth
#
get_eth_original_info_by_pci()
{
    driver_of_this_eth=""

    for((i=0; i<$dev_cnt; i++))
    do
        eval "pci_i=\$bus$i"

        if [ -z $pci_i ]
        then
          return 1
        fi

        if [ $pci_i == $1 ]
        then
            eval "driver_of_this_eth=\$driver$i"
            return 0
        fi
    done
    return 1
}

#
# bind all given eth to dpdk driver.
# zero args will do nothing.
#
function bind_devices_by_name
{
    for eth in $*
    do
        get_eth_original_info_by_name $eth
        if [ $? -ne 0 ]
        then
            echo "can not get pci addr of $eth, bind failed."
            continue
        fi
        echo "bind eth $eth to dpdk driver igb_uio ..."
        bind_devices_to_igb_uio $pci_addr_of_this_eth
    done
}

#
# unbind a eth to it's original driver
#
function unbind_this_device_by_name
{
    get_eth_original_info_by_name $1
    if [ $? -ne 0 ]
    then
        echo "can not get pci addr of $eth, bind failed."
        return 0
    fi

    unbind_devices $driver_of_this_eth $pci_addr_of_this_eth
}

#
# 1) unbind given eth to their original driver.
# 2) if no eth given, unbind all eth binding dpdk driver.
#
function unbind_devices_by_name
{
    # unbind all given eth
    for eth in $*
    do
        echo "unbind dev for $eth"
        unbind_this_device_by_name $eth
    done

    # given at least one eth, bind done and ret
    if [ $# -gt 0 ]
    then
        return 0
    fi

    # given no eth, unbind all dev binding dpdk driver
    for((i=0; i<$dev_cnt; i++))
    do
        eval "Driver_i=\$Driver$i"

        if [ -z $Driver_i ]
        then
          return 1
        fi

        if [ $Driver_i != "igb_uio" ]
        then
            continue
        fi

        eval "get_eth_original_info_by_pci \$Slot$i"
        if [ $? -ne 0 ]
        then
            eval "echo can not get driver of \$Slot$i, unbind failed."
            continue
        fi

        eval "unbind_devices $driver_of_this_eth \$Slot$i"
    done
}

step 1 load_igb_uio_module
step 2 load_kni_module
step 3 set_numa_pages $NUMA_HUGE_PAGE_CNT
step 4 show_numa_pages

巨页清除

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#!/bin/bash

HUGEPGSZ_IN_KB=1048576kB
function LOG_ERR
{
    echo -e "\033[1;31;40m"$*"\033[0m"
}

function LOG_WAR
{
    echo -e "\033[1;33;40m"$*"\033[0m"
}

function LOG_INFO
{
    echo -e "\033[1;32;40m"$*"\033[0m"
}

function LOG_DEBUG
{
    echo -e "\033[1;30;40m"$*"\033[0m"
}

function step
{
    if [ $? -ne 0 ]
    then
        LOG_ERR "previous action failed, exit."
        exit
    fi

    echo -n "step $1: "

    shift
    eval $*
}

#
# Unloads igb_uio.ko.
#
remove_igb_uio_module()
{
    /sbin/lsmod | grep -s igb_uio > /dev/null
    if [ $? -eq 0 ] ; then
         /sbin/rmmod igb_uio
    fi

    LOG_INFO "Unloading any existing DPDK UIO module"
}

#
# Loads new igb_uio.ko (and uio module if needed).
#
load_igb_uio_module()
{
    modprobe igb_uio
    if [ $? -ne 0 ] ; then
        LOG_ERR "## ERROR: Could not load kmod/igb_uio.ko."
        exit
    fi
    LOG_INFO "Load DPDK UIO module Successful!"
}

#
# Unloads the rte_kni.ko module.
#
remove_kni_module()
{
    /sbin/lsmod | grep -s rte_kni > /dev/null
    if [ $? -eq 0 ] ; then
         /sbin/rmmod rte_kni
    fi

    LOG_INFO "Unloading any existing DPDK KNI module"
}

#
# Loads the rte_kni.ko module.
#
load_kni_module()
{
    # Now try load the KNI module.
    # LOG_DEBUG "Loading DPDK KNI module"
    modprobe rte_kni
    if [ $? -ne 0 ] ; then
        LOG_ERR "## ERROR: Could not load kmod/rte_kni.ko."
        exit
    fi
    LOG_INFO "Load  DPDK KNI module Successful!"
}
#
# Removes all reserved hugepages.
#
clear_huge_pages()
{
    echo > .echo_tmp
    for d in /sys/devices/system/node/node? ; do
        echo "echo 0 > $d/hugepages/hugepages-${HUGEPGSZ_IN_KB}/nr_hugepages" >> .echo_tmp
    done

    sh .echo_tmp
    rm -f .echo_tmp

    remove_mnt_huge

    LOG_INFO "Remove currently reserved hugepages, Unmounting /mnt/huge and removing directory"
}

#
# Creates hugepage filesystem.
#
create_mnt_huge()
{
    mkdir -p /mnt/huge

    grep -s '/mnt/huge' /proc/mounts > /dev/null
    if [ $? -ne 0 ] ; then
         mount -t hugetlbfs nodev /mnt/huge
    fi
}

#
# Removes hugepage filesystem.
#
remove_mnt_huge()
{
    grep -s '/mnt/huge' /proc/mounts > /dev/null
    if [ $? -eq 0 ] ; then
         umount /mnt/huge
    fi

    if [ -d /mnt/huge ] ; then
         rm -R /mnt/huge
    fi
}

# Creates hugepages on specific NUMA nodes.
#
set_numa_pages()
{
    Pages=$1

    echo > .echo_tmp
    for d in /sys/devices/system/node/node? ; do
        node=$(basename $d)
        echo "echo $Pages > $d/hugepages/hugepages-${HUGEPGSZ_IN_KB}/nr_hugepages" >> .echo_tmp
    done

    sh .echo_tmp

    rm -f .echo_tmp

    create_mnt_huge

    LOG_INFO "Reserving hugepages: $Pages, Creating /mnt/huge and mounting as hugetlbfs"
}

#
# Uses dpdk-devbind.py to move devices to work with igb_uio
#
bind_devices_to_igb_uio()
{
    if [ -d /sys/module/igb_uio ]; then
        PCI_PATH=$1
        ${RTE_SDK}/usertools/dpdk-devbind.py --force -b igb_uio $PCI_PATH || exit 1
        LOG_INFO "bind $PCI_PATH to igb_uio Successfully!"
    else
        LOG_ERR "# Please load the 'igb_uio' kernel module before querying or "
        LOG_ERR "# adjusting device bindings"
    fi
}

#
# Uses dpdk-devbind.py to move devices to work with kernel drivers again
#
unbind_devices()
{
    DRV=$1
    PCI_PATH=$2
    ${RTE_SDK}/usertools/dpdk-devbind.py -b $DRV $PCI_PATH || LOG_ERR "[Fail] unbind"
    LOG_INFO "unbind $PCI_PATH, bind to driver $DRV Successfully !"
}

get_all_eth_info()
{
    if [ ! -f ./.if_tbl ]
    then
        LOG_ERR "ERROR: there is no .if_tbl, pleae do ./dpdk.install"
        exit
    fi

    # calc original eth info from .if_tbl
    original_eth_info=$(awk '{print gensub(/=(\S*)/, cnt++ "=\\1;", "g");}' ./.if_tbl)
    eval $original_eth_info

    # get eth dev info from lspci and format the output
    # as shell script's value assignment.
    eth_info=$(lspci -Dvmmnnk | awk -v RS="\n\n" '/Eth/{print gensub(/:\s([^\n]*)/, cnt++ "=\"\\1\"", "g");} END{print "dev_cnt=" cnt;}')

    # eval the shell script to get the variables.
    eval $eth_info
    for ((i=0; i<$dev_cnt; i++))
    do
        # calculate eth interface and linking status
        # if eth1's Slog is 0000:05:00.0
        # it's interface name is /sys/bus/pci/devices/0000:05:00.0/net/[interface]
        # it's linking status in /sys/bus/pci/devices/0000:05:00.0/net/[interface]/carrier
        eval "Interface$i=---"
        eval "Linking$i=-"
        eval "dev_net_path=/sys/bus/pci/devices/\$Slot$i/net"
        if [ -e $dev_net_path ]
        then
            eval "Interface$i=$(ls $dev_net_path)"
            eval "read Linking$i</sys/bus/pci/devices/\$Slot$i/net/\$Interface$i/carrier"
        fi
    done
}

#
# ret info at pci_addr_of_this_eth and driver_of_this_eth
#
get_eth_original_info_by_name()
{
    dst_eth_name=$1
    pci_addr_of_this_eth=""
    driver_of_this_eth=""

    for((i=0; i<$dev_cnt; i++))
    do
        eval "eth_name_i=\$if$i"

        if [ -z $eth_name_i ]
        then
          return 1
        fi

        if [ $eth_name_i == $dst_eth_name ]
        then
            eval "pci_addr_of_this_eth=\$bus$i"
            eval "driver_of_this_eth=\$driver$i"
            return 0
        fi
    done
    return 1
}

#
# ret info at driver_of_this_eth
#
get_eth_original_info_by_pci()
{
    driver_of_this_eth=""

    for((i=0; i<$dev_cnt; i++))
    do
        eval "pci_i=\$bus$i"

        if [ -z $pci_i ]
        then
          return 1
        fi

        if [ $pci_i == $1 ]
        then
            eval "driver_of_this_eth=\$driver$i"
            return 0
        fi
    done
    return 1
}

#
# bind all given eth to dpdk driver.
# zero args will do nothing.
#
function bind_devices_by_name
{
    for eth in $*
    do
        get_eth_original_info_by_name $eth
        if [ $? -ne 0 ]
        then
            echo "can not get pci addr of $eth, bind failed."
            continue
        fi
        echo "bind eth $eth to dpdk driver igb_uio ..."
        bind_devices_to_igb_uio $pci_addr_of_this_eth
    done
}

#
# unbind a eth to it's original driver
#
function unbind_this_device_by_name
{
    get_eth_original_info_by_name $1
    if [ $? -ne 0 ]
    then
        echo "can not get pci addr of $eth, bind failed."
        return 0
    fi

    unbind_devices $driver_of_this_eth $pci_addr_of_this_eth
}

#
# 1) unbind given eth to their original driver.
# 2) if no eth given, unbind all eth binding dpdk driver.
#
function unbind_devices_by_name
{
    # unbind all given eth
    for eth in $*
    do
        echo "unbind dev for $eth"
        unbind_this_device_by_name $eth
    done

    # given at least one eth, bind done and ret
    if [ $# -gt 0 ]
    then
        return 0
    fi

    # given no eth, unbind all dev binding dpdk driver
    for((i=0; i<$dev_cnt; i++))
    do
        eval "Driver_i=\$Driver$i"

        if [ -z $Driver_i ]
        then
          return 1
        fi

        if [ $Driver_i != "igb_uio" ]
        then
            continue
        fi

        eval "get_eth_original_info_by_pci \$Slot$i"
        if [ $? -ne 0 ]
        then
            eval "echo can not get driver of \$Slot$i, unbind failed."
            continue
        fi

        eval "unbind_devices $driver_of_this_eth \$Slot$i"
    done
}


step 1 remove_igb_uio_module
step 2 remove_kni_module
step 3 clear_huge_pages

网卡绑定

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#!/bin/bash

# 示例
# 如下
# 0000:03:00.0  eth0           1         virtio_net
#./usertools/dpdk-devbind.py --force -b virtio_net  0000:03:00.0

./usertools/dpdk-devbind.py --force -b $*

网卡解绑

暂未实现
目前只能绑定， 不能解绑.

运行

查看 virtio 网卡信息

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[root@localhost dpdk_virtio]# ./ethinfo.sh
Slot          IF             UP        Driver           Desc
0000:03:00.0  eth0           1         virtio_net       Virtio network device [1041]
0000:04:00.0  eth1           1         virtio_net       Virtio network device [1041]
0000:05:00.0  eth2           1         virtio_net       Virtio network device [1041]
0000:06:00.0  eth3           1         virtio_net       Virtio network device [1041]
[root@localhost dpdk_virtio]#

巨页设置

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[root@localhost dpdk_virtio]#
[root@localhost dpdk_virtio]# ./huge_mount
HUGEPGSZ_IN_KB 1048576kB
NUMA_HUGE_PAGE_CNT 6
step 1: Load DPDK UIO module Successful!
step 2: Load DPDK KNI module Successful!
step 3: Reserving hugepages: 6, Creating /mnt/huge and mounting as hugetlbfs
step 4: show hugepages config:
cmdline:
BOOT_IMAGE=/boot/vmlinuz-3.10.0-693.el7.x86_64 root=UUID=66371ca9-9e2a-4922-9a94-aed6ed192959 ro crashkernel=auto rhgb quiet console=ttyS0,115200 default_hugepagesz=1G hugepagesz=1G hugepages=6
hugepages info:
/sys/devices/system/node/node0/hugepages/hugepages-1048576kB/nr_hugepages 5
hugepages in /proc/meminfo:
AnonHugePages:      4096 kB
HugePages_Total:       5
HugePages_Free:        5
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:    1048576 kB
[root@localhost dpdk_virtio]#

网卡绑定

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[root@localhost dpdk_virtio]# ./interface_bind igb_uio 0000:03:00.0
[root@localhost dpdk_virtio]# ./interface_bind igb_uio 0000:05:00.0
[root@localhost dpdk_virtio]# ./ethinfo.sh
Slot          IF             UP        Driver           Desc
0000:03:00.0  ---            -         igb_uio          Virtio network device [1041]
0000:04:00.0  eth1           1         virtio_net       Virtio network device [1041]
0000:05:00.0  ---            -         igb_uio          Virtio network device [1041]
0000:06:00.0  eth3           1         virtio_net       Virtio network device [1041]
[root@localhost dpdk_virtio]#
[root@localhost dpdk_virtio]#

运行 DPDK 程序

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[root@localhost ~]# ./l2fwd -l 0-4 -- -p 0x0f
EAL: Detected 8 lcore(s)
EAL: Probing VFIO support...
EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using unreliable clock cycles !
EAL: PCI device 0000:02:01.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100e net_e1000_em
EAL: PCI device 0000:03:00.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 1af4:1041 net_virtio
EAL: PCI device 0000:04:00.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 1af4:1041 net_virtio
EAL: PCI device 0000:05:00.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 1af4:1041 net_virtio
EAL: PCI device 0000:06:00.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 1af4:1041 net_virtio
MAC updating enabled
Lcore 0: RX port 0
Lcore 1: RX port 1
Initializing port 0... done:
Port 0, MAC address: 12:34:56:78:90:A5

Initializing port 1... done:
Port 1, MAC address: 12:34:56:78:90:A7

Checking link statusdone
Port 0 Link Up - speed 10000 Mbps - full-duplex
Port 1 Link Up - speed 10000 Mbps - full-duplex
L2FWD: entering main loop on lcore 1
L2FWD:  -- lcoreid=1 portid=1
L2FWD: lcore 2 has nothing to do
L2FWD: lcore 4 has nothing to do
L2FWD: lcore 3 has nothing to do
L2FWD: entering main loop on lcore 0
L2FWD:  -- lcoreid=0 portid=0

Port statistics ====================================
Statistics for port 0 ------------------------------
Packets sent:                  1101894
Packets received:               907488
Speed PPS sent:                1101894
Speed PPS received:             907488
Packets dropped:                   853
Statistics for port 1 ------------------------------
Packets sent:                   906641
Packets received:              1102747
Speed PPS sent:                 906641
Speed PPS received:            1102747
Packets dropped:                   847
Statistics for port 2 ------------------------------
Packets sent:                        0
Packets received:                    0
Speed PPS sent:                      0
Speed PPS received:                  0
Packets dropped:                     0
Statistics for port 3 ------------------------------
Packets sent:                        0
Packets received:                    0
Speed PPS sent:                      0
Speed PPS received:                  0
Packets dropped:                     0
Aggregate statistics ===============================
Total packets sent:            2008535
Total packets received:        2010235
Total packets dropped:            1700
====================================================
^C
Signal 2 received, preparing to exit...
Closing port 0... Done
Closing port 1... Done
Bye...
[root@localhost ~]#

创建发包机

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root@debian:~# cat kvm/kvm_install_slave.sh
#!/bin/bash
OS_DOMAIN='slave'
OS_DISK="/home/OS_Disk_Image/${OS_DOMAIN}.disk"
OS_IMG_DIR='/mnt/data/08_各种镜像/OS_Linux/'

virsh  destroy  $OS_DOMAIN  > /dev/null 2>&1
virsh  undefine $OS_DOMAIN  > /dev/null 2>&1

rm -rf $OS_DISK
rm -rf /var/log/libvirt/qemu/${OS_DOMAIN}.log
rm -rf /etc/libvirt/storage

virt-install                                                \
--virt-type=kvm                                             \
--os-type=linux                                             \
--os-variant=centos7                                        \
--name ${OS_DOMAIN}                                         \
--cpu=host-passthrough                                      \
--accelerate                                                \
--autostart                                                 \
--ram 1024                                                  \
--noautoconsole                                             \
--vcpus sockets=1,cores=1,threads=1                         \
--network mac=12:34:56:78:90:B4,bridge=br0,model=e1000      \
--network mac=12:34:56:78:90:B5,bridge=virtio1,model=virtio \
--network mac=12:34:56:78:90:B6,bridge=virtio2,model=virtio \
--network mac=12:34:56:78:90:B7,bridge=virtio3,model=virtio \
--network mac=12:34:56:78:90:B8,bridge=virtio4,model=virtio \
--graphics vnc,listen=0.0.0.0,port=5934,password=chunli     \
--disk path=${OS_DISK},size=40,format=raw,bus=virtio        \
--cdrom     ${OS_IMG_DIR}/CentOS-7-1708/CentOS-7-x86_64-DVD-1708.iso \

安装发包工具

关闭巨帧

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[root@slave ~]# yum install ethtool

关闭巨帧
[root@slave ~]# ethtool -K eno1  gso off gro off tso off  lro off

验证 还有没有 巨帧
[root@slave ~]# tcpdump -i br0  greater 1500  -tnn

安装发包

tcpreplay-4.2.5-1.el7.x86_64.rpm CentOS7 安装包下载
tcpreplay-4.2.5-1.el7.x86_64.rpm 

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[root@slave ~]# yum install ./tcpreplay-4.2.5-1.el7.x86_64.rpm

开发发包
[root@slave ~]# tcpreplay -i eth1  -M 200  packets_1.pcap
Actual: 137768 packets (110568244 bytes) sent in 4.42 seconds
Rated: 24999727.3 Bps, 199.99 Mbps, 31149.65 pps
Flows: 2204 flows, 498.32 fps, 137329 flow packets, 439 non-flow
Statistics for network device: eth1
    Successful packets:        137768
    Failed packets:            0
    Truncated packets:         0
    Retried packets (ENOBUFS): 0
    Retried packets (EAGAIN):  0
[root@slave ~]#

结束

到此， 端口互联， 开发机配置， 发包机配置，就全部配置好了。

可以安心的工作了。