listvf.sh

#!/bin/bash
 
NIC_DIR="/sys/class/net"
for i in $( ls $NIC_DIR) ;
do
    if [ -d "${NIC_DIR}/$i/device" -a ! -L "${NIC_DIR}/$i/device/physfn" ]; then
        declare -a VF_PCI_BDF
        declare -a VF_INTERFACE
        k=0
        for j in $( ls "${NIC_DIR}/$i/device" ) ;
        do
            if [[ "$j" == "virtfn"* ]]; then
                VF_PCI=$( readlink "${NIC_DIR}/$i/device/$j" | cut -d '/' -f2 )
                VF_PCI_BDF[$k]=$VF_PCI
                #get the interface name for the VF at this PCI Address
                for iface in $( ls $NIC_DIR );
                do
                    link_dir=$( readlink ${NIC_DIR}/$iface )
                    if [[ "$link_dir" == *"$VF_PCI"* ]]; then
                        VF_INTERFACE[$k]=$iface
                    fi
                done
                ((k++))
            fi
        done
        NUM_VFs=${#VF_PCI_BDF[@]}
        if [[ $NUM_VFs -gt 0 ]]; then
            #get the PF Device Description
            PF_PCI=$( readlink "${NIC_DIR}/$i/device" | cut -d '/' -f4 )
            PF_VENDOR=$( lspci -vmmks $PF_PCI | grep ^Vendor | cut -f2)
            PF_NAME=$( lspci -vmmks $PF_PCI | grep ^Device | cut -f2).
            echo "Virtual Functions on $PF_VENDOR $PF_NAME ($i):"
            echo -e "PCI BDF\t\tInterface"
            echo -e "=======\t\t========="
            for (( l = 0; l < $NUM_VFs; l++ )) ;
            do
                echo -e "${VF_PCI_BDF[$l]}\t${VF_INTERFACE[$l]}"
            done
            unset VF_PCI_BDF
            unset VF_INTERFACE
            echo " "
        fi
    fi
done