183 lines · bash
1#!/bin/bash2# SPDX-License-Identifier: GPL-2.03#4# Testing For IPv4 and IPv6 BIG TCP.5# TOPO: CLIENT_NS (link0)<--->(link1) ROUTER_NS (link2)<--->(link3) SERVER_NS6 7CLIENT_NS=$(mktemp -u client-XXXXXXXX)8CLIENT_IP4="198.51.100.1"9CLIENT_IP6="2001:db8:1::1"10 11SERVER_NS=$(mktemp -u server-XXXXXXXX)12SERVER_IP4="203.0.113.1"13SERVER_IP6="2001:db8:2::1"14 15ROUTER_NS=$(mktemp -u router-XXXXXXXX)16SERVER_GW4="203.0.113.2"17CLIENT_GW4="198.51.100.2"18SERVER_GW6="2001:db8:2::2"19CLIENT_GW6="2001:db8:1::2"20 21MAX_SIZE=12800022CHK_SIZE=6553523 24# Kselftest framework requirement - SKIP code is 4.25ksft_skip=426 27setup() {28 ip netns add $CLIENT_NS29 ip netns add $SERVER_NS30 ip netns add $ROUTER_NS31 ip -net $ROUTER_NS link add link1 type veth peer name link0 netns $CLIENT_NS32 ip -net $ROUTER_NS link add link2 type veth peer name link3 netns $SERVER_NS33 34 ip -net $CLIENT_NS link set link0 up35 ip -net $CLIENT_NS link set link0 mtu 144236 ip -net $CLIENT_NS addr add $CLIENT_IP4/24 dev link037 ip -net $CLIENT_NS addr add $CLIENT_IP6/64 dev link0 nodad38 ip -net $CLIENT_NS route add $SERVER_IP4 dev link0 via $CLIENT_GW439 ip -net $CLIENT_NS route add $SERVER_IP6 dev link0 via $CLIENT_GW640 ip -net $CLIENT_NS link set dev link0 \41 gro_ipv4_max_size $MAX_SIZE gso_ipv4_max_size $MAX_SIZE42 ip -net $CLIENT_NS link set dev link0 \43 gro_max_size $MAX_SIZE gso_max_size $MAX_SIZE44 ip net exec $CLIENT_NS sysctl -wq net.ipv4.tcp_window_scaling=1045 46 ip -net $ROUTER_NS link set link1 up47 ip -net $ROUTER_NS link set link2 up48 ip -net $ROUTER_NS addr add $CLIENT_GW4/24 dev link149 ip -net $ROUTER_NS addr add $CLIENT_GW6/64 dev link1 nodad50 ip -net $ROUTER_NS addr add $SERVER_GW4/24 dev link251 ip -net $ROUTER_NS addr add $SERVER_GW6/64 dev link2 nodad52 ip -net $ROUTER_NS link set dev link1 \53 gro_ipv4_max_size $MAX_SIZE gso_ipv4_max_size $MAX_SIZE54 ip -net $ROUTER_NS link set dev link2 \55 gro_ipv4_max_size $MAX_SIZE gso_ipv4_max_size $MAX_SIZE56 ip -net $ROUTER_NS link set dev link1 \57 gro_max_size $MAX_SIZE gso_max_size $MAX_SIZE58 ip -net $ROUTER_NS link set dev link2 \59 gro_max_size $MAX_SIZE gso_max_size $MAX_SIZE60 # test for nf_ct_skb_network_trim in nf_conntrack_ovs used by TC ct action.61 ip net exec $ROUTER_NS tc qdisc add dev link1 ingress62 ip net exec $ROUTER_NS tc filter add dev link1 ingress \63 proto ip flower ip_proto tcp action ct64 ip net exec $ROUTER_NS tc filter add dev link1 ingress \65 proto ipv6 flower ip_proto tcp action ct66 ip net exec $ROUTER_NS sysctl -wq net.ipv4.ip_forward=167 ip net exec $ROUTER_NS sysctl -wq net.ipv6.conf.all.forwarding=168 69 ip -net $SERVER_NS link set link3 up70 ip -net $SERVER_NS addr add $SERVER_IP4/24 dev link371 ip -net $SERVER_NS addr add $SERVER_IP6/64 dev link3 nodad72 ip -net $SERVER_NS route add $CLIENT_IP4 dev link3 via $SERVER_GW473 ip -net $SERVER_NS route add $CLIENT_IP6 dev link3 via $SERVER_GW674 ip -net $SERVER_NS link set dev link3 \75 gro_ipv4_max_size $MAX_SIZE gso_ipv4_max_size $MAX_SIZE76 ip -net $SERVER_NS link set dev link3 \77 gro_max_size $MAX_SIZE gso_max_size $MAX_SIZE78 ip net exec $SERVER_NS sysctl -wq net.ipv4.tcp_window_scaling=1079 ip net exec $SERVER_NS netserver 2>&1 >/dev/null80}81 82cleanup() {83 ip net exec $SERVER_NS pkill netserver84 ip -net $ROUTER_NS link del link185 ip -net $ROUTER_NS link del link286 ip netns del "$CLIENT_NS"87 ip netns del "$SERVER_NS"88 ip netns del "$ROUTER_NS"89}90 91start_counter() {92 local ipt="iptables"93 local iface=$194 local netns=$295 96 [ "$NF" = "6" ] && ipt="ip6tables"97 ip net exec $netns $ipt -t raw -A PREROUTING -i $iface \98 -m length ! --length 0:$CHK_SIZE -j ACCEPT99}100 101check_counter() {102 local ipt="iptables"103 local iface=$1104 local netns=$2105 106 [ "$NF" = "6" ] && ipt="ip6tables"107 test `ip net exec $netns $ipt -t raw -L -v |grep $iface | awk '{print $1}'` != "0"108}109 110stop_counter() {111 local ipt="iptables"112 local iface=$1113 local netns=$2114 115 [ "$NF" = "6" ] && ipt="ip6tables"116 ip net exec $netns $ipt -t raw -D PREROUTING -i $iface \117 -m length ! --length 0:$CHK_SIZE -j ACCEPT118}119 120do_netperf() {121 local serip=$SERVER_IP4122 local netns=$1123 124 [ "$NF" = "6" ] && serip=$SERVER_IP6125 126 # use large write to be sure to generate big tcp packets127 ip net exec $netns netperf -$NF -t TCP_STREAM -l 1 -H $serip -- -m 262144 2>&1 >/dev/null128}129 130do_test() {131 local cli_tso=$1132 local gw_gro=$2133 local gw_tso=$3134 local ser_gro=$4135 local ret="PASS"136 137 ip net exec $CLIENT_NS ethtool -K link0 tso $cli_tso138 ip net exec $ROUTER_NS ethtool -K link1 gro $gw_gro139 ip net exec $ROUTER_NS ethtool -K link2 tso $gw_tso140 ip net exec $SERVER_NS ethtool -K link3 gro $ser_gro141 142 start_counter link1 $ROUTER_NS143 start_counter link3 $SERVER_NS144 do_netperf $CLIENT_NS145 146 if check_counter link1 $ROUTER_NS; then147 check_counter link3 $SERVER_NS || ret="FAIL_on_link3"148 else149 ret="FAIL_on_link1"150 fi151 152 stop_counter link1 $ROUTER_NS153 stop_counter link3 $SERVER_NS154 printf "%-9s %-8s %-8s %-8s: [%s]\n" \155 $cli_tso $gw_gro $gw_tso $ser_gro $ret156 test $ret = "PASS"157}158 159testup() {160 echo "CLI GSO | GW GRO | GW GSO | SER GRO" && \161 do_test "on" "on" "on" "on" && \162 do_test "on" "off" "on" "off" && \163 do_test "off" "on" "on" "on" && \164 do_test "on" "on" "off" "on" && \165 do_test "off" "on" "off" "on"166}167 168if ! netperf -V &> /dev/null; then169 echo "SKIP: Could not run test without netperf tool"170 exit $ksft_skip171fi172 173if ! ip link help 2>&1 | grep gso_ipv4_max_size &> /dev/null; then174 echo "SKIP: Could not run test without gso/gro_ipv4_max_size supported in ip-link"175 exit $ksft_skip176fi177 178trap cleanup EXIT179setup && echo "Testing for BIG TCP:" && \180NF=4 testup && echo "***v4 Tests Done***" && \181NF=6 testup && echo "***v6 Tests Done***"182exit $?183