sriov on openshift4 with unsupport NIC
openshift4自带sriov支持，但是由于内核只认证了某些网卡，所以openshift4内置了一个白名单，sriov的功能只对这些网卡开放。那么我们做实验的时候，没有这些网卡，但是网卡本身支持sriov，怎么做实验呢？本文就讲述如何操作。
实验拓扑图
视频讲解:
there is nic whitelist build-in for openshift4’s sriov, to disable it, using:
- https://docs.openshift.com/container-platform/4.6/networking/hardware_networks/configuring-sriov-operator.html#disable-enable-sr-iov-operator-admission-control-webhook_configuring-sriov-operator
openshift
# sriov的实验不能在kvm里面做，因为sriov PF不能透传到kvm里面，那我们就搞一个物理机worker node
# check vendoer id and device id
# https://access.redhat.com/solutions/56081
# on worker-1
lspci -vv | grep -i Mellanox
# 04:00.0 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]
# Subsystem: Mellanox Technologies Device 0011
# 04:00.1 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]
# Subsystem: Mellanox Technologies Device 0011
lspci -nvv | grep "04:00.0\|04:00.1"
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.0 0200: 15b3:101d
# 04:00.1 0200: 15b3:101d
cat /sys/class/net/*/device/sriov_numvfs
# 0
# 0
cat /sys/class/net/*/device/sriov_totalvfs
# 8
# 8install NFD ( node feature discovery) operator
install SRIOV operator
oc create namespace openshift-sriov-network-operator
oc create -f - <<EOF
apiVersion: operators.coreos.com/v1
kind: OperatorGroup
metadata:
name: sriov-network-operators
namespace: openshift-sriov-network-operator
spec:
targetNamespaces:
- openshift-sriov-network-operator
EOF
# https://catalog.redhat.com/software/containers/openshift4/dpdk-base-rhel8/5e32be6cdd19c77896004a41
# registry.redhat.io/openshift4/dpdk-base-rhel8:latest
# oc get sriovnetworknodestates -n openshift-sriov-network-operator -o jsonpath='{.items[*].status}' | jq
# 可以看到，worker-1上的网卡，已经辨别出了VF
oc get sriovnetworknodestates -n openshift-sriov-network-operator -o json | jq ".items[] | (.metadata.name, .status)""master-0"
{
"interfaces": [
{
"deviceID": "1000",
"driver": "virtio-pci",
"pciAddress": "0000:00:03.0",
"vendor": "1af4"
}
],
"syncStatus": "Succeeded"
}
"master-1"
{
"interfaces": [
{
"deviceID": "1000",
"driver": "virtio-pci",
"pciAddress": "0000:00:03.0",
"vendor": "1af4"
}
],
"syncStatus": "Succeeded"
}
"master-2"
{
"interfaces": [
{
"deviceID": "1000",
"driver": "virtio-pci",
"pciAddress": "0000:00:03.0",
"vendor": "1af4"
}
],
"syncStatus": "Succeeded"
}
"worker-0"
{
"interfaces": [
{
"deviceID": "1000",
"driver": "virtio-pci",
"pciAddress": "0000:00:03.0",
"vendor": "1af4"
}
],
"syncStatus": "Succeeded"
}
"worker-1"
{
"interfaces": [
{
"deviceID": "165f",
"driver": "tg3",
"linkSpeed": "1000 Mb/s",
"linkType": "ETH",
"mac": "90:b1:1c:44:d6:0f",
"mtu": 1500,
"name": "eno1",
"pciAddress": "0000:01:00.0",
"vendor": "14e4"
},
{
"deviceID": "165f",
"driver": "tg3",
"linkSpeed": "-1 Mb/s",
"linkType": "ETH",
"mac": "90:b1:1c:44:d6:10",
"mtu": 1500,
"name": "eno2",
"pciAddress": "0000:01:00.1",
"vendor": "14e4"
},
{
"deviceID": "165f",
"driver": "tg3",
"linkSpeed": "-1 Mb/s",
"linkType": "ETH",
"mac": "90:b1:1c:44:d6:11",
"mtu": 1500,
"name": "eno3",
"pciAddress": "0000:02:00.0",
"vendor": "14e4"
},
{
"deviceID": "165f",
"driver": "tg3",
"linkSpeed": "-1 Mb/s",
"linkType": "ETH",
"mac": "90:b1:1c:44:d6:12",
"mtu": 1500,
"name": "eno4",
"pciAddress": "0000:02:00.1",
"vendor": "14e4"
},
{
"deviceID": "101d",
"driver": "mlx5_core",
"linkSpeed": "-1 Mb/s",
"linkType": "ETH",
"mac": "0c:42:a1:fa:18:52",
"mtu": 1500,
"name": "enp4s0f0",
"pciAddress": "0000:04:00.0",
"totalvfs": 8,
"vendor": "15b3"
},
{
"deviceID": "101d",
"driver": "mlx5_core",
"linkSpeed": "-1 Mb/s",
"linkType": "ETH",
"mac": "0c:42:a1:fa:18:53",
"mtu": 1500,
"name": "enp4s0f1",
"pciAddress": "0000:04:00.1",
"totalvfs": 8,
"vendor": "15b3"
}
],
"syncStatus": "Succeeded"
}
# config worker-1 with hugepage
cat << EOF > /data/install/worker-performance.yaml
apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfigPool
metadata:
name: worker-performance
spec:
machineConfigSelector:
matchExpressions:
- {key: machineconfiguration.openshift.io/role, operator: In, values: [worker,worker-performance]}
nodeSelector:
matchLabels:
node-role.kubernetes.io/worker-performance: ""
EOF
oc create -f /data/install/worker-performance.yaml
# to restore
oc delete -f /data/install/worker-performance.yaml
oc label node worker-1 node-role.kubernetes.io/worker-performance=""
cat << EOF > /data/install/worker-1-hugepage.yaml
apiVersion: performance.openshift.io/v2
kind: PerformanceProfile
metadata:
name: worker-1-hugepage
spec:
cpu:
isolated: "5-23"
reserved: "0-4"
hugepages:
defaultHugepagesSize: 1G
pages:
- count: 4
size: 1G
nodeSelector:
node-role.kubernetes.io/worker-performance: ''
EOF
oc create -f /data/install/worker-1-hugepage.yaml
# to restore
oc delete -f /data/install/worker-1-hugepage.yaml
# on worker-1
grep -i huge /proc/meminfo
# before
# AnonHugePages: 448512 kB
# ShmemHugePages: 0 kB
# HugePages_Total: 0
# HugePages_Free: 0
# HugePages_Rsvd: 0
# HugePages_Surp: 0
# Hugepagesize: 2048 kB
# Hugetlb: 0 kB
# after
# AnonHugePages: 376832 kB
# ShmemHugePages: 0 kB
# HugePages_Total: 4
# HugePages_Free: 4
# HugePages_Rsvd: 0
# HugePages_Surp: 0
# Hugepagesize: 1048576 kB
# Hugetlb: 4194304 kB
cat << EOF > /data/install/sriov-cx4.yaml
apiVersion: sriovnetwork.openshift.io/v1
kind: SriovNetworkNodePolicy
metadata:
name: policy-cx4-net-1
namespace: openshift-sriov-network-operator
spec:
resourceName: cx4nic1
nodeSelector:
feature.node.kubernetes.io/network-sriov.capable: "true"
numVfs: 4
nicSelector:
vendor: "15b3"
deviceID: "101d"
# rootDevices:
# - "0000:19:00.0"
deviceType: netdevice
isRdma: true
EOF
oc create -f /data/install/sriov-cx4.yaml
# Error from server (vendor/device 15b3/101d is not supported): error when creating "/data/install/sriov-cx4.yaml": admission webhook "operator-webhook.sriovnetwork.openshift.io" denied the request: vendor/device 15b3/101d is not supported
# to restore
oc delete -f /data/install/sriov-cx4.yaml
oc get sriovoperatorconfig default -n openshift-sriov-network-operator -o yaml | yq e '.spec' -
# enableInjector: true
# enableOperatorWebhook: true
# logLevel: 2
oc patch sriovoperatorconfig default --type=merge \
-n openshift-sriov-network-operator \
--patch '{ "spec": { "enableOperatorWebhook": false } }'
oc get sriovoperatorconfig default -n openshift-sriov-network-operator -o yaml | yq e '.spec' -
# enableInjector: true
# enableOperatorWebhook: false
# logLevel: 2
oc create -f /data/install/sriov-cx4.yaml
# sriovnetworknodepolicy.sriovnetwork.openshift.io/policy-cx4-net-1 created
# you can see, VF num set to '4'
# oc get sriovnetworknodestates worker-1 -n openshift-sriov-network-operator -o json | jq "(.metadata.name, .status)"
oc get sriovnetworknodestates worker-1 -n openshift-sriov-network-operator -o yaml | yq e "del(.metadata.managedFields)" -apiVersion: sriovnetwork.openshift.io/v1
kind: SriovNetworkNodeState
metadata:
creationTimestamp: "2021-06-30T16:00:09Z"
generation: 4
name: worker-1
namespace: openshift-sriov-network-operator
ownerReferences:
- apiVersion: sriovnetwork.openshift.io/v1
blockOwnerDeletion: true
controller: true
kind: SriovNetworkNodePolicy
name: default
uid: cef00fc5-7952-42ec-b863-980fdc1e6318
resourceVersion: "4425538"
selfLink: /apis/sriovnetwork.openshift.io/v1/namespaces/openshift-sriov-network-operator/sriovnetworknodestates/worker-1
uid: fcf58d46-3127-4956-ac2f-df5ce2e2ac8c
spec:
dpConfigVersion: "4381421"
interfaces:
- name: enp4s0f0
numVfs: 4
pciAddress: "0000:04:00.0"
vfGroups:
- deviceType: netdevice
policyName: policy-cx4-net-1
resourceName: cx4nic1
vfRange: 0-3
- name: enp4s0f1
numVfs: 4
pciAddress: "0000:04:00.1"
vfGroups:
- deviceType: netdevice
policyName: policy-cx4-net-1
resourceName: cx4nic1
vfRange: 0-3
status:
interfaces:
- deviceID: 165f
driver: tg3
linkSpeed: 1000 Mb/s
linkType: ETH
mac: 90:b1:1c:44:d6:0f
mtu: 1500
name: eno1
pciAddress: "0000:01:00.0"
vendor: "14e4"
- deviceID: 165f
driver: tg3
linkSpeed: -1 Mb/s
linkType: ETH
mac: 90:b1:1c:44:d6:10
mtu: 1500
name: eno2
pciAddress: "0000:01:00.1"
vendor: "14e4"
- deviceID: 165f
driver: tg3
linkSpeed: -1 Mb/s
linkType: ETH
mac: 90:b1:1c:44:d6:11
mtu: 1500
name: eno3
pciAddress: "0000:02:00.0"
vendor: "14e4"
- deviceID: 165f
driver: tg3
linkSpeed: -1 Mb/s
linkType: ETH
mac: 90:b1:1c:44:d6:12
mtu: 1500
name: eno4
pciAddress: "0000:02:00.1"
vendor: "14e4"
- Vfs:
- deviceID: 101e
driver: mlx5_core
mac: 36:da:1c:a9:47:9a
mtu: 1500
name: enp4s0f0v0
pciAddress: "0000:04:00.2"
vendor: 15b3
vfID: 0
- deviceID: 101e
driver: mlx5_core
mac: 62:ab:95:db:e6:cc
mtu: 1500
name: enp4s0f0v1
pciAddress: "0000:04:00.3"
vendor: 15b3
vfID: 1
- deviceID: 101e
driver: mlx5_core
pciAddress: "0000:04:00.4"
vendor: 15b3
vfID: 2
- deviceID: 101e
driver: mlx5_core
mac: 5e:9f:cc:cc:e4:a1
mtu: 1500
name: enp4s0f0v3
pciAddress: "0000:04:00.5"
vendor: 15b3
vfID: 3
deviceID: 101d
driver: mlx5_core
eSwitchMode: legacy
linkSpeed: -1 Mb/s
linkType: ETH
mac: 0c:42:a1:fa:18:52
mtu: 1500
name: enp4s0f0
numVfs: 4
pciAddress: "0000:04:00.0"
totalvfs: 4
vendor: 15b3
- Vfs:
- deviceID: 101e
driver: mlx5_core
mac: e6:75:48:6f:56:33
mtu: 1500
name: enp4s0f1v0
pciAddress: "0000:04:00.6"
vendor: 15b3
vfID: 0
- deviceID: 101e
driver: mlx5_core
mac: 5a:74:7a:e7:3d:2b
mtu: 1500
name: enp4s0f1v1
pciAddress: "0000:04:00.7"
vendor: 15b3
vfID: 1
- deviceID: 101e
driver: mlx5_core
mac: 62:f8:19:98:d5:5f
mtu: 1500
name: enp4s0f1v2
pciAddress: "0000:04:01.0"
vendor: 15b3
vfID: 2
- deviceID: 101e
driver: mlx5_core
mac: f2:14:1e:93:e9:39
mtu: 1500
name: enp4s0f1v3
pciAddress: "0000:04:01.1"
vendor: 15b3
vfID: 3
deviceID: 101d
driver: mlx5_core
eSwitchMode: legacy
linkSpeed: -1 Mb/s
linkType: ETH
mac: 0c:42:a1:fa:18:53
mtu: 1500
name: enp4s0f1
numVfs: 4
pciAddress: "0000:04:00.1"
totalvfs: 4
vendor: 15b3
syncStatus: Succeededcat << EOF > /data/install/sriov-network.yaml
apiVersion: sriovnetwork.openshift.io/v1
kind: SriovNetwork
metadata:
name: mlx-dpdk-network
namespace: openshift-sriov-network-operator
spec:
networkNamespace: demo
ipam: "{}"
resourceName: cx4nic1
EOF
oc create -f /data/install/sriov-network.yaml
# to restore
oc delete -f /data/install/sriov-network.yaml
# https://github.com/openshift/sriov-network-operator/issues/133
lspci -vv | grep -i Mellanox
# 04:00.0 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]
# Subsystem: Mellanox Technologies Device 0011
# 04:00.1 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]
# Subsystem: Mellanox Technologies Device 0011
# 04:00.2 Ethernet controller: Mellanox Technologies ConnectX Family mlx5Gen Virtual Function
# Subsystem: Mellanox Technologies Device 0011
# 04:00.3 Ethernet controller: Mellanox Technologies ConnectX Family mlx5Gen Virtual Function
# Subsystem: Mellanox Technologies Device 0011
# 04:00.4 Ethernet controller: Mellanox Technologies ConnectX Family mlx5Gen Virtual Function
# Subsystem: Mellanox Technologies Device 0011
# 04:00.5 Ethernet controller: Mellanox Technologies ConnectX Family mlx5Gen Virtual Function
# Subsystem: Mellanox Technologies Device 0011
# 04:00.6 Ethernet controller: Mellanox Technologies ConnectX Family mlx5Gen Virtual Function
# Subsystem: Mellanox Technologies Device 0011
# 04:00.7 Ethernet controller: Mellanox Technologies ConnectX Family mlx5Gen Virtual Function
# Subsystem: Mellanox Technologies Device 0011
# 04:01.0 Ethernet controller: Mellanox Technologies ConnectX Family mlx5Gen Virtual Function
# Subsystem: Mellanox Technologies Device 0011
# 04:01.1 Ethernet controller: Mellanox Technologies ConnectX Family mlx5Gen Virtual Function
# Subsystem: Mellanox Technologies Device 0011
lspci -nvv | grep "04:00.0\|04:00.1"
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.0 0200: 15b3:101d
# 04:00.1 0200: 15b3:101d
lspci | grep -i Mellanox | awk '{print $1}' | xargs -I DEMO sh -c "lspci -nvv | grep DEMO "
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.0 0200: 15b3:101d
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.1 0200: 15b3:101d
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.2 0200: 15b3:101e
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.3 0200: 15b3:101e
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.4 0200: 15b3:101e
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.5 0200: 15b3:101e
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.6 0200: 15b3:101e
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:00.7 0200: 15b3:101e
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:01.0 0200: 15b3:101e
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 04:01.1 0200: 15b3:101e
# <human readable name>: <vendor ID> <pf ID> <vf ID>
cat << EOF > /data/install/sriov-unsupport.yaml
apiVersion: v1
data:
CX6DX: 15b3 101d 101e
kind: ConfigMap
metadata:
name: unsupported-nic-ids
namespace: openshift-sriov-network-operator
EOF
oc create -f /data/install/sriov-unsupport.yaml
# try to deply a demo pod
cat << EOF > /data/install/dpdk-test.yaml
apiVersion: v1
kind: Pod
metadata:
name: dpdk-app
annotations:
k8s.v1.cni.cncf.io/networks: mlx-dpdk-network
spec:
containers:
- name: testpmd
image: registry.redhat.io/openshift4/dpdk-base-rhel8:v4.6
securityContext:
capabilities:
add: ["IPC_LOCK"]
volumeMounts:
- mountPath: /dev/hugepages
name: hugepage
resources:
limits:
openshift.io/cx4nic1: "1"
memory: "1Gi"
cpu: "4"
hugepages-1Gi: "4Gi"
requests:
openshift.io/cx4nic1: "1"
memory: "1Gi"
cpu: "4"
hugepages-1Gi: "4Gi"
command: ["sleep", "infinity"]
volumes:
- name: hugepage
emptyDir:
medium: HugePages
EOF
oc create -n demo -f /data/install/dpdk-test.yaml
# to restore
oc delete -n demo -f /data/install/dpdk-test.yaml
# in the pod
rpm -ql dpdk-tools
# /usr/sbin/dpdk-devbind
# /usr/share/dpdk/usertools
# /usr/share/dpdk/usertools/cpu_layout.py
# /usr/share/dpdk/usertools/dpdk-devbind.py
# /usr/share/dpdk/usertools/dpdk-pmdinfo.py
# /usr/share/dpdk/usertools/dpdk-telemetry-client.py
/usr/share/dpdk/usertools/dpdk-devbind.py --status-dev net
# lspci: Unable to load libkmod resources: error -12
# lspci: Unable to load libkmod resources: error -12
# lspci: Unable to load libkmod resources: error -12
# lspci: Unable to load libkmod resources: error -12
# lspci: Unable to load libkmod resources: error -12
# lspci: Unable to load libkmod resources: error -12
# lspci: Unable to load libkmod resources: error -12
# Network devices using kernel driver
# ===================================
# 0000:01:00.0 'NetXtreme BCM5720 2-port Gigabit Ethernet PCIe 165f' if= drv=tg3 unused=
# 0000:01:00.1 'NetXtreme BCM5720 2-port Gigabit Ethernet PCIe 165f' if= drv=tg3 unused=
# 0000:02:00.0 'NetXtreme BCM5720 2-port Gigabit Ethernet PCIe 165f' if= drv=tg3 unused=
# 0000:02:00.1 'NetXtreme BCM5720 2-port Gigabit Ethernet PCIe 165f' if= drv=tg3 unused=
# 0000:04:00.0 'MT2892 Family [ConnectX-6 Dx] 101d' if= drv=mlx5_core unused=
# 0000:04:00.1 'MT2892 Family [ConnectX-6 Dx] 101d' if= drv=mlx5_core unused=
# 0000:04:00.2 'ConnectX Family mlx5Gen Virtual Function 101e' if= drv=mlx5_core unused=
# 0000:04:00.3 'ConnectX Family mlx5Gen Virtual Function 101e' if= drv=mlx5_core unused=
# 0000:04:00.4 'ConnectX Family mlx5Gen Virtual Function 101e' if=net1 drv=mlx5_core unused=
# 0000:04:00.5 'ConnectX Family mlx5Gen Virtual Function 101e' if= drv=mlx5_core unused=
# 0000:04:00.6 'ConnectX Family mlx5Gen Virtual Function 101e' if= drv=mlx5_core unused=
# 0000:04:00.7 'ConnectX Family mlx5Gen Virtual Function 101e' if= drv=mlx5_core unused=
# 0000:04:01.0 'ConnectX Family mlx5Gen Virtual Function 101e' if= drv=mlx5_core unused=
# 0000:04:01.1 'ConnectX Family mlx5Gen Virtual Function 101e' if= drv=mlx5_core unused= kvm does’t support sriov PF passthrough
it only support VF passthrough
- https://www.cnblogs.com/dion-90/articles/8522733.html
- https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/sect-pci_devices-pci_passthrough
# on 101
ls /sys/class/net/
lspci -vv | grep -i Mellanox
# pcilib: sysfs_read_vpd: read failed: Input/output error
# 05:00.0 Ethernet controller: Mellanox Technologies MT27710 Family [ConnectX-4 Lx]
# Subsystem: Mellanox Technologies Stand-up ConnectX-4 Lx EN, 25GbE dual-port SFP28, PCIe3.0 x8, MCX4121A-ACAT
# 05:00.1 Ethernet controller: Mellanox Technologies MT27710 Family [ConnectX-4 Lx]
# Subsystem: Mellanox Technologies Stand-up ConnectX-4 Lx EN, 25GbE dual-port SFP28, PCIe3.0 x8, MCX4121A-ACAT
# 07:00.0 Ethernet controller: Mellanox Technologies MT27710 Family [ConnectX-4 Lx]
# Subsystem: Mellanox Technologies Stand-up ConnectX-4 Lx EN, 25GbE dual-port SFP28, PCIe3.0 x8, MCX4121A-ACAT
# 07:00.1 Ethernet controller: Mellanox Technologies MT27710 Family [ConnectX-4 Lx]
# Subsystem: Mellanox Technologies Stand-up ConnectX-4 Lx EN, 25GbE dual-port SFP28, PCIe3.0 x8, MCX4121A-ACAT
virsh nodedev-list | grep 000_05
# pci_0000_05_00_0
# pci_0000_05_00_1
virsh nodedev-dumpxml pci_0000_05_00_0<device>
<name>pci_0000_05_00_0</name>
<path>/sys/devices/pci0000:00/0000:00:06.0/0000:05:00.0</path>
<parent>pci_0000_00_06_0</parent>
<driver>
<name>mlx5_core</name>
</driver>
<capability type='pci'>
<domain>0</domain>
<bus>5</bus>
<slot>0</slot>
<function>0</function>
<product id='0x1015'>MT27710 Family [ConnectX-4 Lx]</product>
<vendor id='0x15b3'>Mellanox Technologies</vendor>
<capability type='virt_functions' maxCount='64'/>
<iommuGroup number='17'>
<address domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
</iommuGroup>
<pci-express>
<link validity='cap' port='0' speed='8' width='8'/>
<link validity='sta' speed='5' width='4'/>
</pci-express>
</capability>
</device>virsh nodedev-dumpxml pci_0000_05_00_1<device>
<name>pci_0000_05_00_1</name>
<path>/sys/devices/pci0000:00/0000:00:06.0/0000:05:00.1</path>
<parent>pci_0000_00_06_0</parent>
<driver>
<name>mlx5_core</name>
</driver>
<capability type='pci'>
<domain>0</domain>
<bus>5</bus>
<slot>0</slot>
<function>1</function>
<product id='0x1015'>MT27710 Family [ConnectX-4 Lx]</product>
<vendor id='0x15b3'>Mellanox Technologies</vendor>
<capability type='virt_functions' maxCount='64'/>
<iommuGroup number='18'>
<address domain='0x0000' bus='0x05' slot='0x00' function='0x1'/>
</iommuGroup>
<pci-express>
<link validity='cap' port='0' speed='8' width='8'/>
<link validity='sta' speed='5' width='4'/>
</pci-express>
</capability>
</device>on 103
ls /sys/class/net/
# baremetal eno1 eno2 eno3 eno4 enp4s0f0 enp4s0f1 lo virbr0 virbr0-nic
echo 0 > /sys/class/net/enp4s0f0/device/sriov_numvfs
echo 0 > /sys/class/net/enp4s0f1/device/sriov_numvfs
lspci -vv | grep -i Mellanox
# 04:00.0 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]
# Subsystem: Mellanox Technologies Device 0011
# 04:00.1 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]
# Subsystem: Mellanox Technologies Device 0011
virsh nodedev-list | grep 000_04
# pci_0000_04_00_0
# pci_0000_04_00_1
virsh nodedev-dumpxml pci_0000_04_00_0<device>
<name>pci_0000_04_00_0</name>
<path>/sys/devices/pci0000:00/0000:00:02.0/0000:04:00.0</path>
<parent>pci_0000_00_02_0</parent>
<driver>
<name>mlx5_core</name>
</driver>
<capability type='pci'>
<class>0x020000</class>
<domain>0</domain>
<bus>4</bus>
<slot>0</slot>
<function>0</function>
<product id='0x101d'>MT2892 Family [ConnectX-6 Dx]</product>
<vendor id='0x15b3'>Mellanox Technologies</vendor>
<capability type='virt_functions' maxCount='8'/>
<iommuGroup number='27'>
<address domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
</iommuGroup>
<numa node='0'/>
<pci-express>
<link validity='cap' port='0' speed='16' width='16'/>
<link validity='sta' speed='8' width='8'/>
</pci-express>
</capability>
</device>virsh nodedev-dumpxml pci_0000_04_00_1<device>
<name>pci_0000_04_00_1</name>
<path>/sys/devices/pci0000:00/0000:00:02.0/0000:04:00.1</path>
<parent>pci_0000_00_02_0</parent>
<driver>
<name>mlx5_core</name>
</driver>
<capability type='pci'>
<class>0x020000</class>
<domain>0</domain>
<bus>4</bus>
<slot>0</slot>
<function>1</function>
<product id='0x101d'>MT2892 Family [ConnectX-6 Dx]</product>
<vendor id='0x15b3'>Mellanox Technologies</vendor>
<capability type='virt_functions' maxCount='8'/>
<iommuGroup number='28'>
<address domain='0x0000' bus='0x04' slot='0x00' function='0x1'/>
</iommuGroup>
<numa node='0'/>
<pci-express>
<link validity='cap' port='0' speed='16' width='16'/>
<link validity='sta' speed='8' width='8'/>
</pci-express>
</capability>
</device>for ocp4-aHelper, change below kvm config
<hostdev mode='subsystem' type='pci' managed='yes'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
</source>
<alias name='hostdev0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
</hostdev>
<hostdev mode='subsystem' type='pci' managed='yes'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x05' slot='0x00' function='0x1'/>
</source>
<alias name='hostdev1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
</hostdev>to
<interface type='hostdev' managed='yes'>
<driver name='vfio'/>
<source>
<address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
</source>
</interface>
<interface type='hostdev' managed='yes'>
<driver name='vfio'/>
<source>
<address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x1'/>
</source>
</interface>virsh edit ocp4-aHelper