#!/bin/bash

set -x

PF="ens1f0"
vf_prefix="ens1f0"

lspci -v | grep "Ethernet controller"
ethtool -i $PF
cat /proc/cmdline 

vf_a=${vf_prefix}v0
vf_b=${vf_prefix}v1
vf_a_index=0
vf_b_index=1

temp_a=temp_$(( $RANDOM % 100 ))
temp_b=temp_$(( $RANDOM % 100 ))

echo 0 > /sys/class/net/$PF/device/sriov_numvfs
ip netns del ns_a || true
ip netns del ns_b || true
sleep 1

echo 4 > /sys/class/net/$PF/device/sriov_numvfs
sleep 4

ip link set dev $PF vf 0 mac `cat /sys/class/net/${vf_prefix}v0/address`
ip link set dev $PF vf 1 mac `cat /sys/class/net/${vf_prefix}v1/address`
ip link set dev $PF vf 2 mac `cat /sys/class/net/${vf_prefix}v2/address`
ip link set dev $PF vf 3 mac `cat /sys/class/net/${vf_prefix}v3/address`

sleep 5

ip netns add ns_a
ip netns add ns_b

# ApplyVFConfig
ip link set dev $PF vf $vf_a_index vlan 0
ip link set dev $PF vf $vf_a_index state enable
ip link set dev $PF vf $vf_a_index mac 20:04:0f:f1:88:A1
# SetupVF
ip link set dev $vf_a down
ip link set $vf_a name $temp_a
ip link set dev $temp_a netns ns_a
ip netns exec ns_a ip link set $temp_a name net1
ip netns exec ns_a sh -c "echo 1 > /proc/sys/net/ipv4/conf/net1/arp_notify"
ip netns exec ns_a ip link set dev net1 address 20:04:0f:f1:88:A1 ||\
     ip netns exec ns_a ip link set dev net1 address 20:04:0f:f1:88:A1
ip netns exec ns_a ip link set dev net1 up
ip netns exec ns_a ip address add dev net1 10.255.255.1/24

sleep 3

# ApplyVFConfig
ip link set dev $PF vf $vf_b_index vlan 0
ip link set dev $PF vf $vf_b_index state enable
ip link set dev $PF vf $vf_b_index mac 20:04:0f:f1:88:A2
# SetupVF
ip link set dev $vf_b down
ip link set $vf_b name $temp_b

ip link set dev $temp_b netns ns_b
ip netns exec ns_b ip link set $temp_b name net1
ip netns exec ns_b sh -c "echo 1 > /proc/sys/net/ipv4/conf/net1/arp_notify"
ip netns exec ns_b ip link set dev net1 address 20:04:0f:f1:88:A2 ||\
     ip netns exec ns_b ip link set dev net1 address 20:04:0f:f1:88:A2
ip netns exec ns_b ip link set dev net1 up
ip netns exec ns_b ip address add dev net1 10.255.255.2/24

sleep 1

ip netns exec ns_a ping -c 3 10.255.255.2