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