#!/bin/bash# SPDX-License-Identifier: GPL-2.0 ############################################################################### Topology description. p1 looped back to p2, p3 to p4 and so on. declare -A NETIFS=(    [p1]=veth0    [p2]=veth1    [p3]=veth2    [p4]=veth3    [p5]=veth4    [p6]=veth5    [p7]=veth6    [p8]=veth7    [p9]=veth8    [p10]=veth9) # Port that does not have a cable connected.: "${NETIF_NO_CABLE:=eth8}" ############################################################################### Defines # Networking utilities.: "${PING:=ping}": "${PING6:=ping6}"	# Some distros just use ping.: "${ARPING:=arping}": "${TROUTE6:=traceroute6}" # Packet generator.: "${MZ:=mausezahn}"	# Some distributions use 'mz'.: "${MZ_DELAY:=0}" # Host configuration tools.: "${TEAMD:=teamd}": "${MCD:=smcrouted}": "${MC_CLI:=smcroutectl}" # Constants for netdevice bring-up:# Default time in seconds to wait for an interface to come up before giving up# and bailing out. Used during initial setup.: "${INTERFACE_TIMEOUT:=600}"# Like INTERFACE_TIMEOUT, but default for ad-hoc waiting in testing scripts.: "${WAIT_TIMEOUT:=20}"# Time to wait after interfaces participating in the test are all UP.: "${WAIT_TIME:=5}" # Whether to pause on, respectively, after a failure and before cleanup.: "${PAUSE_ON_CLEANUP:=no}" # Whether to create virtual interfaces, and what netdevice type they should be.: "${NETIF_CREATE:=yes}": "${NETIF_TYPE:=veth}" # Constants for ping tests:# How many packets should be sent.: "${PING_COUNT:=10}"# Timeout (in seconds) before ping exits regardless of how many packets have# been sent or received: "${PING_TIMEOUT:=5}" # Minimum ageing_time (in centiseconds) supported by hardware: "${LOW_AGEING_TIME:=1000}" # Whether to check for availability of certain tools.: "${REQUIRE_JQ:=yes}": "${REQUIRE_MZ:=yes}": "${REQUIRE_MTOOLS:=no}" # Whether to override MAC addresses on interfaces participating in the test.: "${STABLE_MAC_ADDRS:=no}" # Flags for tcpdump: "${TCPDUMP_EXTRA_FLAGS:=}" # Flags for TC filters.: "${TC_FLAG:=skip_hw}" # Whether the machine is "slow" -- i.e. might be incapable of running tests# involving heavy traffic. This might be the case on a debug kernel, a VM, or# e.g. a low-power board.: "${KSFT_MACHINE_SLOW:=no}" ############################################################################### Find netifs by test-specified driver name driver_name_get(){	local dev=$1; shift	local driver_path="/sys/class/net/$dev/device/driver" 	if [[ -L $driver_path ]]; then		basename `realpath $driver_path`	fi} netif_find_driver(){	local ifnames=`ip -j link show | jq -r ".[].ifname"`	local count=0 	for ifname in $ifnames	do		local driver_name=`driver_name_get $ifname`		if [[ ! -z $driver_name && $driver_name == $NETIF_FIND_DRIVER ]]; then			count=$((count + 1))			NETIFS[p$count]="$ifname"		fi	done} # Whether to find netdevice according to the driver speficied by the importer: "${NETIF_FIND_DRIVER:=}" if [[ $NETIF_FIND_DRIVER ]]; then	unset NETIFS	declare -A NETIFS	netif_find_driverfi net_forwarding_dir=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") if [[ -f $net_forwarding_dir/forwarding.config ]]; then	source "$net_forwarding_dir/forwarding.config"fi source "$net_forwarding_dir/../lib.sh" ############################################################################### Sanity checks check_tc_version(){	tc -j &> /dev/null	if [[ $? -ne 0 ]]; then		echo "SKIP: iproute2 too old; tc is missing JSON support"		exit $ksft_skip	fi} # Old versions of tc don't understand "mpls_uc"check_tc_mpls_support(){	local dev=$1; shift 	tc filter add dev $dev ingress protocol mpls_uc pref 1 handle 1 \		matchall action pipe &> /dev/null	if [[ $? -ne 0 ]]; then		echo "SKIP: iproute2 too old; tc is missing MPLS support"		return $ksft_skip	fi	tc filter del dev $dev ingress protocol mpls_uc pref 1 handle 1 \		matchall} # Old versions of tc produce invalid json output for mpls lse statisticscheck_tc_mpls_lse_stats(){	local dev=$1; shift	local ret; 	tc filter add dev $dev ingress protocol mpls_uc pref 1 handle 1 \		flower mpls lse depth 2                                 \		action continue &> /dev/null 	if [[ $? -ne 0 ]]; then		echo "SKIP: iproute2 too old; tc-flower is missing extended MPLS support"		return $ksft_skip	fi 	tc -j filter show dev $dev ingress protocol mpls_uc | jq . &> /dev/null	ret=$?	tc filter del dev $dev ingress protocol mpls_uc pref 1 handle 1 \		flower 	if [[ $ret -ne 0 ]]; then		echo "SKIP: iproute2 too old; tc-flower produces invalid json output for extended MPLS filters"		return $ksft_skip	fi} check_tc_shblock_support(){	tc filter help 2>&1 | grep block &> /dev/null	if [[ $? -ne 0 ]]; then		echo "SKIP: iproute2 too old; tc is missing shared block support"		exit $ksft_skip	fi} check_tc_chain_support(){	tc help 2>&1|grep chain &> /dev/null	if [[ $? -ne 0 ]]; then		echo "SKIP: iproute2 too old; tc is missing chain support"		exit $ksft_skip	fi} check_tc_action_hw_stats_support(){	tc actions help 2>&1 | grep -q hw_stats	if [[ $? -ne 0 ]]; then		echo "SKIP: iproute2 too old; tc is missing action hw_stats support"		exit $ksft_skip	fi} check_tc_fp_support(){	tc qdisc add dev lo mqprio help 2>&1 | grep -q "fp "	if [[ $? -ne 0 ]]; then		echo "SKIP: iproute2 too old; tc is missing frame preemption support"		exit $ksft_skip	fi} check_ethtool_lanes_support(){	ethtool --help 2>&1| grep lanes &> /dev/null	if [[ $? -ne 0 ]]; then		echo "SKIP: ethtool too old; it is missing lanes support"		exit $ksft_skip	fi} check_ethtool_mm_support(){	ethtool --help 2>&1| grep -- '--show-mm' &> /dev/null	if [[ $? -ne 0 ]]; then		echo "SKIP: ethtool too old; it is missing MAC Merge layer support"		exit $ksft_skip	fi} check_ethtool_counter_group_support(){	ethtool --help 2>&1| grep -- '--all-groups' &> /dev/null	if [[ $? -ne 0 ]]; then		echo "SKIP: ethtool too old; it is missing standard counter group support"		exit $ksft_skip	fi} check_ethtool_pmac_std_stats_support(){	local dev=$1; shift	local grp=$1; shift 	[ 0 -ne $(ethtool --json -S $dev --all-groups --src pmac 2>/dev/null \		| jq ".[].\"$grp\" | length") ]} check_locked_port_support(){	if ! bridge -d link show | grep -q " locked"; then		echo "SKIP: iproute2 too old; Locked port feature not supported."		return $ksft_skip	fi} check_port_mab_support(){	if ! bridge -d link show | grep -q "mab"; then		echo "SKIP: iproute2 too old; MacAuth feature not supported."		return $ksft_skip	fi} if [[ "$(id -u)" -ne 0 ]]; then	echo "SKIP: need root privileges"	exit $ksft_skipfi check_driver(){	local dev=$1; shift	local expected=$1; shift	local driver_name=`driver_name_get $dev` 	if [[ $driver_name != $expected ]]; then		echo "SKIP: expected driver $expected for $dev, got $driver_name instead"		exit $ksft_skip	fi} if [[ "$CHECK_TC" = "yes" ]]; then	check_tc_versionfi require_command(){	local cmd=$1; shift 	if [[ ! -x "$(command -v "$cmd")" ]]; then		echo "SKIP: $cmd not installed"		exit $ksft_skip	fi} # IPv6 support was added in v3.0check_mtools_version(){	local version="$(msend -v)"	local major 	version=${version##msend version }	major=$(echo $version | cut -d. -f1) 	if [ $major -lt 3 ]; then		echo "SKIP: expected mtools version 3.0, got $version"		exit $ksft_skip	fi} if [[ "$REQUIRE_JQ" = "yes" ]]; then	require_command jqfiif [[ "$REQUIRE_MZ" = "yes" ]]; then	require_command $MZfiif [[ "$REQUIRE_MTOOLS" = "yes" ]]; then	# https://github.com/troglobit/mtools	require_command msend	require_command mreceive	check_mtools_versionfi ############################################################################### Command line options handling count=0 while [[ $# -gt 0 ]]; do	if [[ "$count" -eq "0" ]]; then		unset NETIFS		declare -A NETIFS	fi	count=$((count + 1))	NETIFS[p$count]="$1"	shiftdone ############################################################################### Network interfaces configuration if [[ ! -v NUM_NETIFS ]]; then	echo "SKIP: importer does not define \"NUM_NETIFS\""	exit $ksft_skipfi if (( NUM_NETIFS > ${#NETIFS[@]} )); then	echo "SKIP: Importer requires $NUM_NETIFS NETIFS, but only ${#NETIFS[@]} are defined (${NETIFS[@]})"	exit $ksft_skipfi for i in $(seq ${#NETIFS[@]}); do	if [[ ! ${NETIFS[p$i]} ]]; then		echo "SKIP: NETIFS[p$i] not given"		exit $ksft_skip	fidone create_netif_veth(){	local i 	for ((i = 1; i <= NUM_NETIFS; ++i)); do		local j=$((i+1)) 		if [ -z ${NETIFS[p$i]} ]; then			echo "SKIP: Cannot create interface. Name not specified"			exit $ksft_skip		fi 		ip link show dev ${NETIFS[p$i]} &> /dev/null		if [[ $? -ne 0 ]]; then			ip link add ${NETIFS[p$i]} type veth \				peer name ${NETIFS[p$j]}			if [[ $? -ne 0 ]]; then				echo "Failed to create netif"				exit 1			fi		fi		i=$j	done} create_netif(){	case "$NETIF_TYPE" in	veth) create_netif_veth	      ;;	*) echo "Can not create interfaces of type \'$NETIF_TYPE\'"	   exit 1	   ;;	esac} declare -A MAC_ADDR_ORIGmac_addr_prepare(){	local new_addr=	local dev= 	for ((i = 1; i <= NUM_NETIFS; ++i)); do		dev=${NETIFS[p$i]}		new_addr=$(printf "00:01:02:03:04:%02x" $i) 		MAC_ADDR_ORIG["$dev"]=$(ip -j link show dev $dev | jq -e '.[].address')		# Strip quotes		MAC_ADDR_ORIG["$dev"]=${MAC_ADDR_ORIG["$dev"]//\"/}		ip link set dev $dev address $new_addr	done} mac_addr_restore(){	local dev= 	for ((i = 1; i <= NUM_NETIFS; ++i)); do		dev=${NETIFS[p$i]}		ip link set dev $dev address ${MAC_ADDR_ORIG["$dev"]}	done} if [[ "$NETIF_CREATE" = "yes" ]]; then	create_netiffi if [[ "$STABLE_MAC_ADDRS" = "yes" ]]; then	mac_addr_preparefi for ((i = 1; i <= NUM_NETIFS; ++i)); do	ip link show dev ${NETIFS[p$i]} &> /dev/null	if [[ $? -ne 0 ]]; then		echo "SKIP: could not find all required interfaces"		exit $ksft_skip	fidone ############################################################################### Helpers not(){	"$@"	[[ $? != 0 ]]} get_max(){	local arr=("$@") 	max=${arr[0]}	for cur in ${arr[@]}; do		if [[ $cur -gt $max ]]; then			max=$cur		fi	done 	echo $max} grep_bridge_fdb(){	local addr=$1; shift	local word	local flag 	if [ "$1" == "self" ] || [ "$1" == "master" ]; then		word=$1; shift		if [ "$1" == "-v" ]; then			flag=$1; shift		fi	fi 	$@ | grep $addr | grep $flag "$word"} wait_for_port_up(){	"$@" | grep -q "Link detected: yes"} wait_for_offload(){	"$@" | grep -q offload} wait_for_trap(){	"$@" | grep -q trap} setup_wait_dev(){

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