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Pre-req: Install dependencies

코드 블럭

# For Ubuntu
apt install build-essential
apt install python3-pyelftools
apt-get install -y libarchive-dev
apt-get install -y libelf-dev
apt install cmake
apt-get install -y pkg-config
apt-get install -y libdpdk-dev
apt-get install -y libnuma-dev
apt-get install git libpcap-dev

apt install python3-pip
pip3 install meson ninja
pip3 install meson ninja


# For Rocky/RHEL
dnf groupinstall "Development Tools"
dnf install numactl-devel
pip3 install meson ninja
pip3 install pyelftools


# For CentOS 7

yum -y install kernel-devel.x86_64
yum -y install numactl-devel.x86_64
yum -y install elfutils-libelf-devel
yum -y install libpcap-devel

Pre-req: Install mlxofed pkg with --dpdk and --upstream-lib

코드 블럭
/mnt/mlnxofedinstall --without-fw-update --dpdk --upstream-libs --force /etc/init.d/openibd restart

Pre-req: Enable IOMMU for virtualization

코드 블럭

dmesg | grep -i -e DMAR -e IOMMU

# For rocky/centos
sudo nano /etc/default/grub

GRUB_CMDLINE_LINUX="..... intel_iommu=on iommu=pt pci=realloc"
sudo grub-mkconfig -o /boot/grub/grub.cfg

# For ubuntu
GRUB_CMDLINE_LINUX_DEFAULT="...... intel_iommu=on"
sudo grub-mkconfig -o /boot/grub/grub.cfg
reboot

If you want to create virtual function, first check in the firmware SRIOV_EN is 'enabled' or 'disabled'. Enable it if it isnt.

wget https://git.dpdk.org/apps/pktgen-dpdk/snapshot/pktgen-dpdk-pktgen-23.06.1.tar.xz tar xJf dpdk-23.03.tar.xz

코드 블럭

mlxconfig -d /dev/mst/mt4119_pciconf0 q | grep SRIOV_EN

# Set the Number of VFs in the firmware
# Run mst start.

# Using the IDs obtained in the previous task, type the following:

sudo mlxconfig -d /dev/mst/mt4119_pciconf0set SRIOV_EN=1 NUM_OF_VFS=<number between 0-127>

sudo mlxconfig -d /dev/mst/mt4119_pciconf0 set SRIOV_EN=1 NUM_OF_VFS=8

sudo mlxconfig -d /dev/mst/mt4119_pciconf0 query

sudo mlxconfig -d /dev/mst/mt4119_pciconf0 query


#Update the firmware

sudo mst start
sudo mst status -v
sudo flint -d /dev/mst/mt4119_pciconf0 -i fw-download-from-official-website-based-on-psid-of-your-nic.bin burn

# Reboot for the settings to take effect.


cat /sys/class/net/enp10s0np0/device/mlx5_num_vfs

echo 8 > /sys/class/infiniband/mlx5_0/device/mlx5_num_vfs

코드 블럭


or
echo 8 > /sys/class/net/ens785f0/device/sriov_numvfs
or
echo 8 > /sys/class/net/ens785f0/device/mlx5_num_vfs

Build 'igb_uio' driver if needed

정보
If you wanna build 'igb_uio', follow below. In my case, it did not work for Mellanox Connect X5 (mlx_core driver was enough)

코드 블럭

git clone git://dpdk.org/dpdk-kmods
cp -r dpdk-kmods/linux/igb_uio dpdk-23.03/kernel/linux/
cd dpdk-23.03/kernel/linux/igb_uio
vi meson.build

""""""""""

# SPDX-License-Identifier: BSD-3-Clause
# Copyright(c) 2017 Intel Corporation

mkfile = custom_target('igb_uio_makefile',
        output: 'Makefile',
        command: ['touch', '@OUTPUT@'])

kernel_dir = '/lib/modules/' + kernel_version
custom_target('igb_uio',
        input: ['igb_uio.c', 'Kbuild'],
        output: 'igb_uio.ko',
        command: ['make', '-C', kernel_dir + '/build',
                'M=' + meson.current_build_dir(),
                'src=' + meson.current_source_dir(),
                'EXTRA_CFLAGS=-I' + meson.current_source_dir() +
                        '/../../../lib/librte_eal/include',
                'modules'],
        depends: mkfile,
        install: true,
        install_dir: kernel_dir + '/extra/dpdk',
        build_by_default: get_option('enable_kmods'))

""""""

cd .. (in meson.build -> dpdk-23.03/kernel/linux)
add the following:
subdirs = ['kni', 'igb_uio']

Build dpdk and install using meson and ninja

코드 블럭
cd dpdk-23.03 meson setup build cd build ninja ninja install ldconfig

Download dpdk from official website

코드 블럭
wget https://fast.dpdk.org/rel/dpdk-23.03.tar.xz tar xJf dpdk-23.03.tar.xz

Build dpdk and install using meson and ninja

코드 블럭
cd dpdk-23.03 meson setup build cd build ninja ninja install ldconfig

Set hugepage

정보

Set the hugepage to 1G and number of page as per your requirements (just increase 'nr_hugepages' if the eval mem allocation failed). more details: https://haryachyy.wordpress.com/2019/04/17/learning-dpdk-huge-pages/

There are three ways to do it as follows.

코드 블럭

language	bash
theme	Emacs

# 1. Using dpdk based python program 
/usr/local/bin/dpdk-hugepages.py -p 1G --setup 32G

# 2. Insert 'nr_hugepages'
echo 4 > /sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages

# 3. The permanent option (but I won't recommend this, this makes the the grub penic attack in rocky linux and goes to emergency mode)
vi /etc/fstab 

nodev /mnt/huge hugetlbfs pagesize=1GB 0 0

Download pktgen-dpdk from official website (make sure, the version of pktgen-dpdk is higher than dpdk → it's very fragile)

코드 블럭

export RTE_SDK=/root/dpdk-23.03
export RTE_TARGET=x86_64-native-linux-gcc 

wget https://git.dpdk.org/apps/pktgen-dpdk/snapshot/pktgen-dpdk-pktgen-23.06.1.tar.xz
tar xJf pktgen-dpdk-pktgen-23.06.1.tar.xz

BW test

Following configuration can be applied if the expected bandwidth is not showing up for mellanox X5 (ref: https://stackoverflow.com/questions/72345569/why-does-dpdk-mellanox-connectx5-process-128b-packets-much-faster-than-other-s/72393527#72393527)

코드 블럭

systemctl stop irqbalance.service
systemctl disable irqbalance.service
systemctl stop wpa_supplicant
systemctl disable wpa_supplicant
./set_irq_affinity_cpulist.sh [non dpdk cores] [desired NIC]
mlxconfig -d [pcie device id] set SRIOV_EN=0
mlx_tune -r
ifconfig [NIC] txqueuelen 20000
ethtool -G [NIC] rx 8192 tx 8192
ethtool -A [NIC] rx off tx off
mlxconfig -d [pcie address] set ZERO_TOUCH_TUNING_ENABLE=1
mlxconfig -d [pcie address] set CQE_COMPRESSION=1
mlxconfig -d [pcie address] s PCI_WR_ORDERING=1

Testing between two servers. We are using 8 virtual function in each server but not utilizing all of them.

...

코드 블럭

language	bash

Sender:  /usr/local/bin/pktgen --huge-dir /dev/hugepages -l 1-10 -n 2 -- -P -m '[0:2-8].2-6' -T

코드 블럭

language	bash

Receiver: /usr/local/bin/pktgen --huge-dir /dev/hugepages -l 1-10 -n 2 -- -P -m '[2-5:6-10].0' -T -s 2:output.pcap

Image Removed

Image Added

코드 블럭
Pktgen:/> set 2-6 src ip 10.10.11.0/24 Pktgen:/> set 2-6 dst ip 10.0.10.3 Pktgen:/> set 2-6 dst mac fe:63:23:fc:5e:36 Pktgen:/> set 2-6 size 512 Pktgen:/> start 2-6

Image Added

Some helpful config in pkt-gen: https://stackoverflow.com/questions/73218563/dpdk-pktgen-how-to-change-rate-of-packet-transmissionCopy
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키

Pre-req: Install dependencies

Pre-req: Install mlxofed pkg with --dpdk and --upstream-lib

Pre-req: Enable IOMMU for virtualization

Build 'igb_uio' driver if needed

Build dpdk and install using meson and ninja

Download dpdk from official website

Build dpdk and install using meson and ninja

Set hugepage

Download pktgen-dpdk from official website (make sure, the version of pktgen-dpdk is higher than dpdk → it's very fragile)

BW test