1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4NS1=lwt_ns1 5VETH0=tst_lwt1a 6VETH1=tst_lwt1b 7 8TRACE_ROOT=/sys/kernel/debug/tracing 9 10function cleanup { 11 ip route del 192.168.253.2/32 dev $VETH0 2> /dev/null 12 ip link del $VETH0 2> /dev/null 13 ip link del $VETH1 2> /dev/null 14 ip netns exec $NS1 killall netserver 15 ip netns delete $NS1 2> /dev/null 16} 17 18cleanup 19 20ip netns add $NS1 21ip link add $VETH0 type veth peer name $VETH1 22ip link set dev $VETH0 up 23ip addr add 192.168.253.1/24 dev $VETH0 24ip link set $VETH1 netns $NS1 25ip netns exec $NS1 ip link set dev $VETH1 up 26ip netns exec $NS1 ip addr add 192.168.253.2/24 dev $VETH1 27ip netns exec $NS1 netserver 28 29echo 1 > ${TRACE_ROOT}/tracing_on 30cp /dev/null ${TRACE_ROOT}/trace 31ip route add 192.168.253.2/32 encap bpf out obj lwt_len_hist_kern.o section len_hist dev $VETH0 32netperf -H 192.168.253.2 -t TCP_STREAM 33cat ${TRACE_ROOT}/trace | grep -v '^#' 34./lwt_len_hist 35cleanup 36echo 0 > ${TRACE_ROOT}/tracing_on 37 38exit 0 39