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-$(mktemp -u XXXXXX)" 7 8cleanup() { 9 local -r jobs="$(jobs -p)" 10 local -r ns="$(ip netns list|grep $PEER_NS)" 11 12 [ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null 13 [ -n "$ns" ] && ip netns del $ns 2>/dev/null 14} 15trap cleanup EXIT 16 17cfg_veth() { 18 ip netns add "${PEER_NS}" 19 ip -netns "${PEER_NS}" link set lo up 20 ip link add type veth 21 ip link set dev veth0 up 22 ip addr add dev veth0 192.168.1.2/24 23 ip addr add dev veth0 2001:db8::2/64 nodad 24 25 ip link set dev veth1 netns "${PEER_NS}" 26 ip -netns "${PEER_NS}" addr add dev veth1 192.168.1.1/24 27 ip -netns "${PEER_NS}" addr add dev veth1 2001:db8::1/64 nodad 28 ip -netns "${PEER_NS}" link set dev veth1 up 29 ip -n "${PEER_NS}" link set veth1 xdp object ../bpf/xdp_dummy.o section xdp_dummy 30} 31 32run_one() { 33 # use 'rx' as separator between sender args and receiver args 34 local -r all="$@" 35 local -r tx_args=${all%rx*} 36 local -r rx_args=${all#*rx} 37 38 cfg_veth 39 40 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 1000 -R 10 ${rx_args} && \ 41 echo "ok" || \ 42 echo "failed" & 43 44 # Hack: let bg programs complete the startup 45 sleep 0.1 46 ./udpgso_bench_tx ${tx_args} 47 wait $(jobs -p) 48} 49 50run_test() { 51 local -r args=$@ 52 53 printf " %-40s" "$1" 54 ./in_netns.sh $0 __subprocess $2 rx -G -r $3 55} 56 57run_one_nat() { 58 # use 'rx' as separator between sender args and receiver args 59 local addr1 addr2 pid family="" ipt_cmd=ip6tables 60 local -r all="$@" 61 local -r tx_args=${all%rx*} 62 local -r rx_args=${all#*rx} 63 64 if [[ ${tx_args} = *-4* ]]; then 65 ipt_cmd=iptables 66 family=-4 67 addr1=192.168.1.1 68 addr2=192.168.1.3/24 69 else 70 addr1=2001:db8::1 71 addr2="2001:db8::3/64 nodad" 72 fi 73 74 cfg_veth 75 ip -netns "${PEER_NS}" addr add dev veth1 ${addr2} 76 77 # fool the GRO engine changing the destination address ... 78 ip netns exec "${PEER_NS}" $ipt_cmd -t nat -I PREROUTING -d ${addr1} -j DNAT --to-destination ${addr2%/*} 79 80 # ... so that GRO will match the UDP_GRO enabled socket, but packets 81 # will land on the 'plain' one 82 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -G ${family} -b ${addr1} -n 0 & 83 pid=$! 84 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 1000 -R 10 ${family} -b ${addr2%/*} ${rx_args} && \ 85 echo "ok" || \ 86 echo "failed"& 87 88 sleep 0.1 89 ./udpgso_bench_tx ${tx_args} 90 kill -INT $pid 91 wait $(jobs -p) 92} 93 94run_one_2sock() { 95 # use 'rx' as separator between sender args and receiver args 96 local -r all="$@" 97 local -r tx_args=${all%rx*} 98 local -r rx_args=${all#*rx} 99 100 cfg_veth 101 102 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 1000 -R 10 ${rx_args} -p 12345 & 103 ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 2000 -R 10 ${rx_args} && \ 104 echo "ok" || \ 105 echo "failed" & 106 107 # Hack: let bg programs complete the startup 108 sleep 0.1 109 ./udpgso_bench_tx ${tx_args} -p 12345 110 sleep 0.1 111 # first UDP GSO socket should be closed at this point 112 ./udpgso_bench_tx ${tx_args} 113 wait $(jobs -p) 114} 115 116run_nat_test() { 117 local -r args=$@ 118 119 printf " %-40s" "$1" 120 ./in_netns.sh $0 __subprocess_nat $2 rx -r $3 121} 122 123run_2sock_test() { 124 local -r args=$@ 125 126 printf " %-40s" "$1" 127 ./in_netns.sh $0 __subprocess_2sock $2 rx -G -r $3 128} 129 130run_all() { 131 local -r core_args="-l 4" 132 local -r ipv4_args="${core_args} -4 -D 192.168.1.1" 133 local -r ipv6_args="${core_args} -6 -D 2001:db8::1" 134 135 echo "ipv4" 136 run_test "no GRO" "${ipv4_args} -M 10 -s 1400" "-4 -n 10 -l 1400" 137 138 # explicitly check we are not receiving UDP_SEGMENT cmsg (-S -1) 139 # when GRO does not take place 140 run_test "no GRO chk cmsg" "${ipv4_args} -M 10 -s 1400" "-4 -n 10 -l 1400 -S -1" 141 142 # the GSO packets are aggregated because: 143 # * veth schedule napi after each xmit 144 # * segmentation happens in BH context, veth napi poll is delayed after 145 # the transmission of the last segment 146 run_test "GRO" "${ipv4_args} -M 1 -s 14720 -S 0 " "-4 -n 1 -l 14720" 147 run_test "GRO chk cmsg" "${ipv4_args} -M 1 -s 14720 -S 0 " "-4 -n 1 -l 14720 -S 1472" 148 run_test "GRO with custom segment size" "${ipv4_args} -M 1 -s 14720 -S 500 " "-4 -n 1 -l 14720" 149 run_test "GRO with custom segment size cmsg" "${ipv4_args} -M 1 -s 14720 -S 500 " "-4 -n 1 -l 14720 -S 500" 150 151 run_nat_test "bad GRO lookup" "${ipv4_args} -M 1 -s 14720 -S 0" "-n 10 -l 1472" 152 run_2sock_test "multiple GRO socks" "${ipv4_args} -M 1 -s 14720 -S 0 " "-4 -n 1 -l 14720 -S 1472" 153 154 echo "ipv6" 155 run_test "no GRO" "${ipv6_args} -M 10 -s 1400" "-n 10 -l 1400" 156 run_test "no GRO chk cmsg" "${ipv6_args} -M 10 -s 1400" "-n 10 -l 1400 -S -1" 157 run_test "GRO" "${ipv6_args} -M 1 -s 14520 -S 0" "-n 1 -l 14520" 158 run_test "GRO chk cmsg" "${ipv6_args} -M 1 -s 14520 -S 0" "-n 1 -l 14520 -S 1452" 159 run_test "GRO with custom segment size" "${ipv6_args} -M 1 -s 14520 -S 500" "-n 1 -l 14520" 160 run_test "GRO with custom segment size cmsg" "${ipv6_args} -M 1 -s 14520 -S 500" "-n 1 -l 14520 -S 500" 161 162 run_nat_test "bad GRO lookup" "${ipv6_args} -M 1 -s 14520 -S 0" "-n 10 -l 1452" 163 run_2sock_test "multiple GRO socks" "${ipv6_args} -M 1 -s 14520 -S 0 " "-n 1 -l 14520 -S 1452" 164} 165 166if [ ! -f ../bpf/xdp_dummy.o ]; then 167 echo "Missing xdp_dummy helper. Build bpf selftest first" 168 exit -1 169fi 170 171if [[ $# -eq 0 ]]; then 172 run_all 173elif [[ $1 == "__subprocess" ]]; then 174 shift 175 run_one $@ 176elif [[ $1 == "__subprocess_nat" ]]; then 177 shift 178 run_one_nat $@ 179elif [[ $1 == "__subprocess_2sock" ]]; then 180 shift 181 run_one_2sock $@ 182fi 183