1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4readonly server_ns=$(mktemp -u server-XXXXXXXX) 5readonly client_ns=$(mktemp -u client-XXXXXXXX) 6 7setup_veth_ns() { 8 local -r link_dev="$1" 9 local -r ns_name="$2" 10 local -r ns_dev="$3" 11 local -r ns_mac="$4" 12 13 [[ -e /var/run/netns/"${ns_name}" ]] || ip netns add "${ns_name}" 14 echo 200000 > "/sys/class/net/${ns_dev}/gro_flush_timeout" 15 echo 1 > "/sys/class/net/${ns_dev}/napi_defer_hard_irqs" 16 ip link set dev "${ns_dev}" netns "${ns_name}" mtu 65535 17 ip -netns "${ns_name}" link set dev "${ns_dev}" up 18 19 ip netns exec "${ns_name}" ethtool -K "${ns_dev}" gro on tso off 20} 21 22setup_ns() { 23 # Set up server_ns namespace and client_ns namespace 24 ip link add name server type veth peer name client 25 26 setup_veth_ns "${dev}" ${server_ns} server "${SERVER_MAC}" 27 setup_veth_ns "${dev}" ${client_ns} client "${CLIENT_MAC}" 28} 29 30cleanup_ns() { 31 local ns_name 32 33 for ns_name in ${client_ns} ${server_ns}; do 34 [[ -e /var/run/netns/"${ns_name}" ]] && ip netns del "${ns_name}" 35 done 36} 37 38setup() { 39 # no global init setup step needed 40 : 41} 42 43cleanup() { 44 cleanup_ns 45} 46