shell bypass 403
UnknownSec Shell
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usr
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src
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linux-headers-6.8.0-36
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tools
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testing
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selftests
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net
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drwxr-xr-x
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upload
mass deface
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name :
veth.sh
#!/bin/sh # SPDX-License-Identifier: GPL-2.0 BPF_FILE="xdp_dummy.o" readonly STATS="$(mktemp -p /tmp ns-XXXXXX)" readonly BASE=`basename $STATS` readonly SRC=2 readonly DST=1 readonly DST_NAT=100 readonly NS_SRC=$BASE$SRC readonly NS_DST=$BASE$DST # "baremetal" network used for raw UDP traffic readonly BM_NET_V4=192.168.1. readonly BM_NET_V6=2001:db8:: readonly CPUS=`nproc` ret=0 cleanup() { local ns local jobs readonly jobs="$(jobs -p)" [ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null rm -f $STATS for ns in $NS_SRC $NS_DST; do ip netns del $ns 2>/dev/null done } trap cleanup EXIT create_ns() { local ns for ns in $NS_SRC $NS_DST; do ip netns add $ns ip -n $ns link set dev lo up done ip link add name veth$SRC type veth peer name veth$DST for ns in $SRC $DST; do ip link set dev veth$ns netns $BASE$ns up ip -n $BASE$ns addr add dev veth$ns $BM_NET_V4$ns/24 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V6$ns/64 nodad done echo "#kernel" > $BASE chmod go-rw $BASE } __chk_flag() { local msg="$1" local target=$2 local expected=$3 local flagname=$4 local flag=`ip netns exec $BASE$target ethtool -k veth$target |\ grep $flagname | awk '{print $2}'` printf "%-60s" "$msg" if [ "$flag" = "$expected" ]; then echo " ok " else echo " fail - expected $expected found $flag" ret=1 fi } chk_gro_flag() { __chk_flag "$1" $2 $3 generic-receive-offload } chk_tso_flag() { __chk_flag "$1" $2 $3 tcp-segmentation-offload } chk_channels() { local msg="$1" local target=$2 local rx=$3 local tx=$4 local dev=veth$target local cur_rx=`ip netns exec $BASE$target ethtool -l $dev |\ grep RX: | tail -n 1 | awk '{print $2}' ` local cur_tx=`ip netns exec $BASE$target ethtool -l $dev |\ grep TX: | tail -n 1 | awk '{print $2}'` local cur_combined=`ip netns exec $BASE$target ethtool -l $dev |\ grep Combined: | tail -n 1 | awk '{print $2}'` printf "%-60s" "$msg" if [ "$cur_rx" = "$rx" -a "$cur_tx" = "$tx" -a "$cur_combined" = "n/a" ]; then echo " ok " else echo " fail rx:$rx:$cur_rx tx:$tx:$cur_tx combined:n/a:$cur_combined" fi } chk_gro() { local msg="$1" local expected=$2 ip netns exec $BASE$SRC ping -qc 1 $BM_NET_V4$DST >/dev/null NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat -n printf "%-60s" "$msg" ip netns exec $BASE$DST ./udpgso_bench_rx -C 1000 -R 10 & local spid=$! sleep 0.1 ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 13000 -S 1300 -M 1 -D $BM_NET_V4$DST local retc=$? wait $spid local rets=$? if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then echo " fail client exit code $retc, server $rets" ret=1 return fi local pkts=`NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat IpInReceives | \ awk '{print $2}' | tail -n 1` if [ "$pkts" = "$expected" ]; then echo " ok " else echo " fail - got $pkts packets, expected $expected " ret=1 fi } __change_channels() { local cur_cpu local end=$1 local cur local i while true; do printf -v cur '%(%s)T' [ $cur -le $end ] || break for i in `seq 1 $CPUS`; do ip netns exec $NS_SRC ethtool -L veth$SRC rx $i tx $i ip netns exec $NS_DST ethtool -L veth$DST rx $i tx $i done for i in `seq 1 $((CPUS - 1))`; do cur_cpu=$((CPUS - $i)) ip netns exec $NS_SRC ethtool -L veth$SRC rx $cur_cpu tx $cur_cpu ip netns exec $NS_DST ethtool -L veth$DST rx $cur_cpu tx $cur_cpu done done } __send_data() { local end=$1 while true; do printf -v cur '%(%s)T' [ $cur -le $end ] || break ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 1000 -M 300 -D $BM_NET_V4$DST done } do_stress() { local end printf -v end '%(%s)T' end=$((end + $STRESS)) ip netns exec $NS_SRC ethtool -L veth$SRC rx 3 tx 3 ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3 ip netns exec $NS_DST ./udpgso_bench_rx & local rx_pid=$! echo "Running stress test for $STRESS seconds..." __change_channels $end & local ch_pid=$! __send_data $end & local data_pid_1=$! __send_data $end & local data_pid_2=$! __send_data $end & local data_pid_3=$! __send_data $end & local data_pid_4=$! wait $ch_pid $data_pid_1 $data_pid_2 $data_pid_3 $data_pid_4 kill -9 $rx_pid echo "done" # restore previous setting ip netns exec $NS_SRC ethtool -L veth$SRC rx 2 tx 2 ip netns exec $NS_DST ethtool -L veth$DST rx 2 tx 1 } usage() { echo "Usage: $0 [-h] [-s <seconds>]" echo -e "\t-h: show this help" echo -e "\t-s: run optional stress tests for the given amount of seconds" } STRESS=0 while getopts "hs:" option; do case "$option" in "h") usage $0 exit 0 ;; "s") STRESS=$OPTARG ;; esac done if [ ! -f ${BPF_FILE} ]; then echo "Missing ${BPF_FILE}. Run 'make' first" exit 1 fi [ $CPUS -lt 2 ] && echo "Only one CPU available, some tests will be skipped" [ $STRESS -gt 0 -a $CPUS -lt 3 ] && echo " stress test will be skipped, too" create_ns chk_gro_flag "default - gro flag" $SRC off chk_gro_flag " - peer gro flag" $DST off chk_tso_flag " - tso flag" $SRC on chk_tso_flag " - peer tso flag" $DST on chk_gro " - aggregation" 1 ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off chk_gro " - aggregation with TSO off" 10 cleanup create_ns ip netns exec $NS_DST ethtool -K veth$DST gro on chk_gro_flag "with gro on - gro flag" $DST on chk_gro_flag " - peer gro flag" $SRC off chk_tso_flag " - tso flag" $SRC on chk_tso_flag " - peer tso flag" $DST on ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on chk_gro " - aggregation with TSO off" 1 cleanup create_ns ip -n $NS_DST link set dev veth$DST up ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} section xdp chk_gro_flag "gro vs xdp while down - gro flag on" $DST on ip -n $NS_DST link set dev veth$DST down chk_gro_flag " - after down" $DST on ip -n $NS_DST link set dev veth$DST xdp off chk_gro_flag " - after xdp off" $DST off ip -n $NS_DST link set dev veth$DST up chk_gro_flag " - after up" $DST off ip -n $NS_SRC link set dev veth$SRC xdp object ${BPF_FILE} section xdp chk_gro_flag " - after peer xdp" $DST off cleanup create_ns chk_channels "default channels" $DST 1 1 ip -n $NS_DST link set dev veth$DST down ip netns exec $NS_DST ethtool -K veth$DST gro on chk_gro_flag "with gro enabled on link down - gro flag" $DST on chk_gro_flag " - peer gro flag" $SRC off chk_tso_flag " - tso flag" $SRC on chk_tso_flag " - peer tso flag" $DST on ip -n $NS_DST link set dev veth$DST up ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on chk_gro " - aggregation with TSO off" 1 cleanup create_ns CUR_TX=1 CUR_RX=1 if [ $CPUS -gt 1 ]; then ip netns exec $NS_DST ethtool -L veth$DST tx 2 chk_channels "setting tx channels" $DST 1 2 CUR_TX=2 fi if [ $CPUS -gt 2 ]; then ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3 chk_channels "setting both rx and tx channels" $DST 3 3 CUR_RX=3 CUR_TX=3 fi ip netns exec $NS_DST ethtool -L veth$DST combined 2 2>/dev/null chk_channels "bad setting: combined channels" $DST $CUR_RX $CUR_TX ip netns exec $NS_DST ethtool -L veth$DST tx $((CPUS + 1)) 2>/dev/null chk_channels "setting invalid channels nr" $DST $CUR_RX $CUR_TX if [ $CPUS -gt 1 ]; then # this also tests queues nr reduction ip netns exec $NS_DST ethtool -L veth$DST rx 1 tx 2 2>/dev/null ip netns exec $NS_SRC ethtool -L veth$SRC rx 1 tx 2 2>/dev/null printf "%-60s" "bad setting: XDP with RX nr less than TX" ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} \ section xdp 2>/dev/null &&\ echo "fail - set operation successful ?!?" || echo " ok " # the following tests will run with multiple channels active ip netns exec $NS_SRC ethtool -L veth$SRC rx 2 ip netns exec $NS_DST ethtool -L veth$DST rx 2 ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} \ section xdp 2>/dev/null printf "%-60s" "bad setting: reducing RX nr below peer TX with XDP set" ip netns exec $NS_DST ethtool -L veth$DST rx 1 2>/dev/null &&\ echo "fail - set operation successful ?!?" || echo " ok " CUR_RX=2 CUR_TX=2 fi if [ $CPUS -gt 2 ]; then printf "%-60s" "bad setting: increasing peer TX nr above RX with XDP set" ip netns exec $NS_SRC ethtool -L veth$SRC tx 3 2>/dev/null &&\ echo "fail - set operation successful ?!?" || echo " ok " chk_channels "setting invalid channels nr" $DST 2 2 fi ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} section xdp 2>/dev/null chk_gro_flag "with xdp attached - gro flag" $DST on chk_gro_flag " - peer gro flag" $SRC off chk_tso_flag " - tso flag" $SRC off chk_tso_flag " - peer tso flag" $DST on ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on chk_gro " - aggregation" 1 ip -n $NS_DST link set dev veth$DST down ip -n $NS_SRC link set dev veth$SRC down chk_gro_flag " - after dev off, flag" $DST on chk_gro_flag " - peer flag" $SRC off ip netns exec $NS_DST ethtool -K veth$DST gro on ip -n $NS_DST link set dev veth$DST xdp off chk_gro_flag " - after gro on xdp off, gro flag" $DST on chk_gro_flag " - peer gro flag" $SRC off chk_tso_flag " - tso flag" $SRC on chk_tso_flag " - peer tso flag" $DST on if [ $CPUS -gt 1 ]; then ip netns exec $NS_DST ethtool -L veth$DST tx 1 chk_channels "decreasing tx channels with device down" $DST 2 1 fi ip -n $NS_DST link set dev veth$DST up ip -n $NS_SRC link set dev veth$SRC up chk_gro " - aggregation" 1 if [ $CPUS -gt 1 ]; then [ $STRESS -gt 0 -a $CPUS -gt 2 ] && do_stress ip -n $NS_DST link set dev veth$DST down ip -n $NS_SRC link set dev veth$SRC down ip netns exec $NS_DST ethtool -L veth$DST tx 2 chk_channels "increasing tx channels with device down" $DST 2 2 ip -n $NS_DST link set dev veth$DST up ip -n $NS_SRC link set dev veth$SRC up fi ip netns exec $NS_DST ethtool -K veth$DST gro off ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off chk_gro "aggregation again with default and TSO off" 10 exit $ret
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