1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3 4readonly STATS="$(mktemp -p /tmp ns-XXXXXX)" 5readonly BASE=`basename $STATS` 6readonly SRC=2 7readonly DST=1 8readonly DST_NAT=100 9readonly NS_SRC=$BASE$SRC 10readonly NS_DST=$BASE$DST 11 12# "baremetal" network used for raw UDP traffic 13readonly BM_NET_V4=192.168.1. 14readonly BM_NET_V6=2001:db8:: 15 16readonly NPROCS=`nproc` 17ret=0 18 19cleanup() { 20 local ns 21 local -r jobs="$(jobs -p)" 22 [ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null 23 rm -f $STATS 24 25 for ns in $NS_SRC $NS_DST; do 26 ip netns del $ns 2>/dev/null 27 done 28} 29 30trap cleanup EXIT 31 32create_ns() { 33 local ns 34 35 for ns in $NS_SRC $NS_DST; do 36 ip netns add $ns 37 ip -n $ns link set dev lo up 38 done 39 40 ip link add name veth$SRC type veth peer name veth$DST 41 42 for ns in $SRC $DST; do 43 ip link set dev veth$ns netns $BASE$ns up 44 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V4$ns/24 45 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V6$ns/64 nodad 46 done 47 echo "#kernel" > $BASE 48 chmod go-rw $BASE 49} 50 51__chk_flag() { 52 local msg="$1" 53 local target=$2 54 local expected=$3 55 local flagname=$4 56 57 local flag=`ip netns exec $BASE$target ethtool -k veth$target |\ 58 grep $flagname | awk '{print $2}'` 59 60 printf "%-60s" "$msg" 61 if [ "$flag" = "$expected" ]; then 62 echo " ok " 63 else 64 echo " fail - expected $expected found $flag" 65 ret=1 66 fi 67} 68 69chk_gro_flag() { 70 __chk_flag "$1" $2 $3 generic-receive-offload 71} 72 73chk_tso_flag() { 74 __chk_flag "$1" $2 $3 tcp-segmentation-offload 75} 76 77chk_gro() { 78 local msg="$1" 79 local expected=$2 80 81 ip netns exec $BASE$SRC ping -qc 1 $BM_NET_V4$DST >/dev/null 82 NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat -n 83 84 printf "%-60s" "$msg" 85 ip netns exec $BASE$DST ./udpgso_bench_rx -C 1000 -R 10 & 86 local spid=$! 87 sleep 0.1 88 89 ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 13000 -S 1300 -M 1 -D $BM_NET_V4$DST 90 local retc=$? 91 wait $spid 92 local rets=$? 93 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 94 echo " fail client exit code $retc, server $rets" 95 ret=1 96 return 97 fi 98 99 local pkts=`NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat IpInReceives | \ 100 awk '{print $2}' | tail -n 1` 101 if [ "$pkts" = "$expected" ]; then 102 echo " ok " 103 else 104 echo " fail - got $pkts packets, expected $expected " 105 ret=1 106 fi 107} 108 109if [ ! -f ../bpf/xdp_dummy.o ]; then 110 echo "Missing xdp_dummy helper. Build bpf selftest first" 111 exit -1 112fi 113 114create_ns 115chk_gro_flag "default - gro flag" $SRC off 116chk_gro_flag " - peer gro flag" $DST off 117chk_tso_flag " - tso flag" $SRC on 118chk_tso_flag " - peer tso flag" $DST on 119chk_gro " - aggregation" 1 120ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off 121chk_gro " - aggregation with TSO off" 10 122cleanup 123 124create_ns 125ip netns exec $NS_DST ethtool -K veth$DST gro on 126chk_gro_flag "with gro on - gro flag" $DST on 127chk_gro_flag " - peer gro flag" $SRC off 128chk_tso_flag " - tso flag" $SRC on 129chk_tso_flag " - peer tso flag" $DST on 130ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off 131ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on 132chk_gro " - aggregation with TSO off" 1 133cleanup 134 135create_ns 136ip -n $NS_DST link set dev veth$DST down 137ip netns exec $NS_DST ethtool -K veth$DST gro on 138chk_gro_flag "with gro enabled on link down - gro flag" $DST on 139chk_gro_flag " - peer gro flag" $SRC off 140chk_tso_flag " - tso flag" $SRC on 141chk_tso_flag " - peer tso flag" $DST on 142ip -n $NS_DST link set dev veth$DST up 143ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off 144ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on 145chk_gro " - aggregation with TSO off" 1 146cleanup 147 148create_ns 149ip -n $NS_DST link set dev veth$DST xdp object ../bpf/xdp_dummy.o section xdp_dummy 2>/dev/null 150chk_gro_flag "with xdp attached - gro flag" $DST on 151chk_gro_flag " - peer gro flag" $SRC off 152chk_tso_flag " - tso flag" $SRC off 153chk_tso_flag " - peer tso flag" $DST on 154ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on 155chk_gro " - aggregation" 1 156 157 158ip -n $NS_DST link set dev veth$DST down 159ip -n $NS_SRC link set dev veth$SRC down 160chk_gro_flag " - after dev off, flag" $DST on 161chk_gro_flag " - peer flag" $SRC off 162 163ip netns exec $NS_DST ethtool -K veth$DST gro on 164ip -n $NS_DST link set dev veth$DST xdp off 165chk_gro_flag " - after gro on xdp off, gro flag" $DST on 166chk_gro_flag " - peer gro flag" $SRC off 167chk_tso_flag " - tso flag" $SRC on 168chk_tso_flag " - peer tso flag" $DST on 169ip -n $NS_DST link set dev veth$DST up 170ip -n $NS_SRC link set dev veth$SRC up 171chk_gro " - aggregation" 1 172 173ip netns exec $NS_DST ethtool -K veth$DST gro off 174ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off 175chk_gro "aggregation again with default and TSO off" 10 176 177exit $ret 178