1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3# 4# Run a series of udpgro functional tests. 5 6readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)" 7 8BPF_FILE="../bpf/xdp_dummy.bpf.o" 9 10# set global exit status, but never reset nonzero one. 11check_err() 12{ 13 if [ $ret -eq 0 ]; then 14 ret=$1 15 fi 16} 17 18cleanup() { 19 local -r jobs="$(jobs -p)" 20 local -r ns="$(ip netns list|grep $PEER_NS)" 21 22 [ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null 23 [ -n "$ns" ] && ip netns del $ns 2>/dev/null 24} 25trap cleanup EXIT 26 27cfg_veth() { 28 ip netns add "${PEER_NS}" 29 ip -netns "${PEER_NS}" link set lo up 30 ip link add type veth 31 ip link set dev veth0 up 32 ip addr add dev veth0 192.168.1.2/24 33 ip addr add dev veth0 2001:db8::2/64 nodad 34 35 ip link set dev veth1 netns "${PEER_NS}" 36 ip -netns "${PEER_NS}" addr add dev veth1 192.168.1.1/24 37 ip -netns "${PEER_NS}" addr add dev veth1 2001:db8::1/64 nodad 38 ip -netns "${PEER_NS}" link set dev veth1 up 39 ip -n "${PEER_NS}" link set veth1 xdp object ${BPF_FILE} section xdp 40} 41 42run_one() { 43 # use 'rx' as separator between sender args and receiver args 44 local -r all="$@" 45 local -r tx_args=${all%rx*} 46 local -r rx_args=${all#*rx} 47 48 cfg_veth 49 50 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 1000 -R 10 ${rx_args} && \ 51 echo "ok" || \ 52 echo "failed" & 53 54 # Hack: let bg programs complete the startup 55 sleep 0.2 56 ./udpgso_bench_tx ${tx_args} 57 ret=$? 58 wait $(jobs -p) 59 return $ret 60} 61 62run_test() { 63 local -r args=$@ 64 65 printf " %-40s" "$1" 66 ./in_netns.sh $0 __subprocess $2 rx -G -r $3 67} 68 69run_one_nat() { 70 # use 'rx' as separator between sender args and receiver args 71 local addr1 addr2 pid family="" ipt_cmd=ip6tables 72 local -r all="$@" 73 local -r tx_args=${all%rx*} 74 local -r rx_args=${all#*rx} 75 76 if [[ ${tx_args} = *-4* ]]; then 77 ipt_cmd=iptables 78 family=-4 79 addr1=192.168.1.1 80 addr2=192.168.1.3/24 81 else 82 addr1=2001:db8::1 83 addr2="2001:db8::3/64 nodad" 84 fi 85 86 cfg_veth 87 ip -netns "${PEER_NS}" addr add dev veth1 ${addr2} 88 89 # fool the GRO engine changing the destination address ... 90 ip netns exec "${PEER_NS}" $ipt_cmd -t nat -I PREROUTING -d ${addr1} -j DNAT --to-destination ${addr2%/*} 91 92 # ... so that GRO will match the UDP_GRO enabled socket, but packets 93 # will land on the 'plain' one 94 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -G ${family} -b ${addr1} -n 0 & 95 pid=$! 96 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 1000 -R 10 ${family} -b ${addr2%/*} ${rx_args} && \ 97 echo "ok" || \ 98 echo "failed"& 99 100 sleep 0.1 101 ./udpgso_bench_tx ${tx_args} 102 ret=$? 103 kill -INT $pid 104 wait $(jobs -p) 105 return $ret 106} 107 108run_one_2sock() { 109 # use 'rx' as separator between sender args and receiver args 110 local -r all="$@" 111 local -r tx_args=${all%rx*} 112 local -r rx_args=${all#*rx} 113 114 cfg_veth 115 116 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 1000 -R 10 ${rx_args} -p 12345 & 117 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 2000 -R 10 ${rx_args} && \ 118 echo "ok" || \ 119 echo "failed" & 120 121 # Hack: let bg programs complete the startup 122 sleep 0.2 123 ./udpgso_bench_tx ${tx_args} -p 12345 124 sleep 0.1 125 # first UDP GSO socket should be closed at this point 126 ./udpgso_bench_tx ${tx_args} 127 ret=$? 128 wait $(jobs -p) 129 return $ret 130} 131 132run_nat_test() { 133 local -r args=$@ 134 135 printf " %-40s" "$1" 136 ./in_netns.sh $0 __subprocess_nat $2 rx -r $3 137} 138 139run_2sock_test() { 140 local -r args=$@ 141 142 printf " %-40s" "$1" 143 ./in_netns.sh $0 __subprocess_2sock $2 rx -G -r $3 144} 145 146run_all() { 147 local -r core_args="-l 4" 148 local -r ipv4_args="${core_args} -4 -D 192.168.1.1" 149 local -r ipv6_args="${core_args} -6 -D 2001:db8::1" 150 ret=0 151 152 echo "ipv4" 153 run_test "no GRO" "${ipv4_args} -M 10 -s 1400" "-4 -n 10 -l 1400" 154 check_err $? 155 156 # explicitly check we are not receiving UDP_SEGMENT cmsg (-S -1) 157 # when GRO does not take place 158 run_test "no GRO chk cmsg" "${ipv4_args} -M 10 -s 1400" "-4 -n 10 -l 1400 -S -1" 159 check_err $? 160 161 # the GSO packets are aggregated because: 162 # * veth schedule napi after each xmit 163 # * segmentation happens in BH context, veth napi poll is delayed after 164 # the transmission of the last segment 165 run_test "GRO" "${ipv4_args} -M 1 -s 14720 -S 0 " "-4 -n 1 -l 14720" 166 check_err $? 167 run_test "GRO chk cmsg" "${ipv4_args} -M 1 -s 14720 -S 0 " "-4 -n 1 -l 14720 -S 1472" 168 check_err $? 169 run_test "GRO with custom segment size" "${ipv4_args} -M 1 -s 14720 -S 500 " "-4 -n 1 -l 14720" 170 check_err $? 171 run_test "GRO with custom segment size cmsg" "${ipv4_args} -M 1 -s 14720 -S 500 " "-4 -n 1 -l 14720 -S 500" 172 check_err $? 173 174 run_nat_test "bad GRO lookup" "${ipv4_args} -M 1 -s 14720 -S 0" "-n 10 -l 1472" 175 check_err $? 176 run_2sock_test "multiple GRO socks" "${ipv4_args} -M 1 -s 14720 -S 0 " "-4 -n 1 -l 14720 -S 1472" 177 check_err $? 178 179 echo "ipv6" 180 run_test "no GRO" "${ipv6_args} -M 10 -s 1400" "-n 10 -l 1400" 181 check_err $? 182 run_test "no GRO chk cmsg" "${ipv6_args} -M 10 -s 1400" "-n 10 -l 1400 -S -1" 183 check_err $? 184 run_test "GRO" "${ipv6_args} -M 1 -s 14520 -S 0" "-n 1 -l 14520" 185 check_err $? 186 run_test "GRO chk cmsg" "${ipv6_args} -M 1 -s 14520 -S 0" "-n 1 -l 14520 -S 1452" 187 check_err $? 188 run_test "GRO with custom segment size" "${ipv6_args} -M 1 -s 14520 -S 500" "-n 1 -l 14520" 189 check_err $? 190 run_test "GRO with custom segment size cmsg" "${ipv6_args} -M 1 -s 14520 -S 500" "-n 1 -l 14520 -S 500" 191 check_err $? 192 193 run_nat_test "bad GRO lookup" "${ipv6_args} -M 1 -s 14520 -S 0" "-n 10 -l 1452" 194 check_err $? 195 run_2sock_test "multiple GRO socks" "${ipv6_args} -M 1 -s 14520 -S 0 " "-n 1 -l 14520 -S 1452" 196 check_err $? 197 return $ret 198} 199 200if [ ! -f ${BPF_FILE} ]; then 201 echo "Missing ${BPF_FILE}. Build bpf selftest first" 202 exit -1 203fi 204 205if [[ $# -eq 0 ]]; then 206 run_all 207elif [[ $1 == "__subprocess" ]]; then 208 shift 209 run_one $@ 210elif [[ $1 == "__subprocess_nat" ]]; then 211 shift 212 run_one_nat $@ 213elif [[ $1 == "__subprocess_2sock" ]]; then 214 shift 215 run_one_2sock $@ 216fi 217 218exit $? 219