mptcp_join.sh 53.7 KB
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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

ret=0
sin=""
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sinfail=""
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sout=""
cin=""
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cinfail=""
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cinsent=""
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cout=""
ksft_skip=4
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timeout_poll=30
timeout_test=$((timeout_poll * 2 + 1))
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mptcp_connect=""
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capture=0
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checksum=0
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do_all_tests=1
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TEST_COUNT=0

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# generated using "nfbpf_compile '(ip && (ip[54] & 0xf0) == 0x30) ||
#				  (ip6 && (ip6[74] & 0xf0) == 0x30)'"
CBPF_MPTCP_SUBOPTION_ADD_ADDR="14,
			       48 0 0 0,
			       84 0 0 240,
			       21 0 3 64,
			       48 0 0 54,
			       84 0 0 240,
			       21 6 7 48,
			       48 0 0 0,
			       84 0 0 240,
			       21 0 4 96,
			       48 0 0 74,
			       84 0 0 240,
			       21 0 1 48,
			       6 0 0 65535,
			       6 0 0 0"

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init()
{
	capout=$(mktemp)

	rndh=$(printf %x $sec)-$(mktemp -u XXXXXX)

	ns1="ns1-$rndh"
	ns2="ns2-$rndh"

	for netns in "$ns1" "$ns2";do
		ip netns add $netns || exit $ksft_skip
		ip -net $netns link set lo up
		ip netns exec $netns sysctl -q net.mptcp.enabled=1
		ip netns exec $netns sysctl -q net.ipv4.conf.all.rp_filter=0
		ip netns exec $netns sysctl -q net.ipv4.conf.default.rp_filter=0
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		if [ $checksum -eq 1 ]; then
			ip netns exec $netns sysctl -q net.mptcp.checksum_enabled=1
		fi
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	done

	#  ns1              ns2
	# ns1eth1    ns2eth1
	# ns1eth2    ns2eth2
	# ns1eth3    ns2eth3
	# ns1eth4    ns2eth4

	for i in `seq 1 4`; do
		ip link add ns1eth$i netns "$ns1" type veth peer name ns2eth$i netns "$ns2"
		ip -net "$ns1" addr add 10.0.$i.1/24 dev ns1eth$i
		ip -net "$ns1" addr add dead:beef:$i::1/64 dev ns1eth$i nodad
		ip -net "$ns1" link set ns1eth$i up

		ip -net "$ns2" addr add 10.0.$i.2/24 dev ns2eth$i
		ip -net "$ns2" addr add dead:beef:$i::2/64 dev ns2eth$i nodad
		ip -net "$ns2" link set ns2eth$i up

		# let $ns2 reach any $ns1 address from any interface
		ip -net "$ns2" route add default via 10.0.$i.1 dev ns2eth$i metric 10$i
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		ip -net "$ns2" route add default via dead:beef:$i::1 dev ns2eth$i metric 10$i
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	done
}

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init_shapers()
{
	for i in `seq 1 4`; do
		tc -n $ns1 qdisc add dev ns1eth$i root netem rate 20mbit delay 1
		tc -n $ns2 qdisc add dev ns2eth$i root netem rate 20mbit delay 1
	done
}

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cleanup_partial()
{
	rm -f "$capout"

	for netns in "$ns1" "$ns2"; do
		ip netns del $netns
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		rm -f /tmp/$netns.{nstat,out}
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	done
}

cleanup()
{
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	rm -f "$cin" "$cout" "$sinfail"
	rm -f "$sin" "$sout" "$cinsent" "$cinfail"
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	cleanup_partial
}

reset()
{
	cleanup_partial
	init
}

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reset_with_cookies()
{
	reset

	for netns in "$ns1" "$ns2";do
		ip netns exec $netns sysctl -q net.ipv4.tcp_syncookies=2
	done
}

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reset_with_add_addr_timeout()
{
	local ip="${1:-4}"
	local tables

	tables="iptables"
	if [ $ip -eq 6 ]; then
		tables="ip6tables"
	fi

	reset

	ip netns exec $ns1 sysctl -q net.mptcp.add_addr_timeout=1
	ip netns exec $ns2 $tables -A OUTPUT -p tcp \
		-m tcp --tcp-option 30 \
		-m bpf --bytecode \
		"$CBPF_MPTCP_SUBOPTION_ADD_ADDR" \
		-j DROP
}

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reset_with_checksum()
{
	local ns1_enable=$1
	local ns2_enable=$2

	reset

	ip netns exec $ns1 sysctl -q net.mptcp.checksum_enabled=$ns1_enable
	ip netns exec $ns2 sysctl -q net.mptcp.checksum_enabled=$ns2_enable
}

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reset_with_allow_join_id0()
{
	local ns1_enable=$1
	local ns2_enable=$2

	reset

	ip netns exec $ns1 sysctl -q net.mptcp.allow_join_initial_addr_port=$ns1_enable
	ip netns exec $ns2 sysctl -q net.mptcp.allow_join_initial_addr_port=$ns2_enable
}

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ip -Version > /dev/null 2>&1
if [ $? -ne 0 ];then
	echo "SKIP: Could not run test without ip tool"
	exit $ksft_skip
fi

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iptables -V > /dev/null 2>&1
if [ $? -ne 0 ];then
	echo "SKIP: Could not run all tests without iptables tool"
	exit $ksft_skip
fi

ip6tables -V > /dev/null 2>&1
if [ $? -ne 0 ];then
	echo "SKIP: Could not run all tests without ip6tables tool"
	exit $ksft_skip
fi
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print_file_err()
{
	ls -l "$1" 1>&2
	echo "Trailing bytes are: "
	tail -c 27 "$1"
}

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check_transfer()
{
	in=$1
	out=$2
	what=$3

	cmp "$in" "$out" > /dev/null 2>&1
	if [ $? -ne 0 ] ;then
		echo "[ FAIL ] $what does not match (in, out):"
		print_file_err "$in"
		print_file_err "$out"
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		ret=1
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		return 1
	fi

	return 0
}

do_ping()
{
	listener_ns="$1"
	connector_ns="$2"
	connect_addr="$3"

	ip netns exec ${connector_ns} ping -q -c 1 $connect_addr >/dev/null
	if [ $? -ne 0 ] ; then
		echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2
		ret=1
	fi
}

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link_failure()
{
	ns="$1"

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	if [ -z "$FAILING_LINKS" ]; then
		l=$((RANDOM%4))
		FAILING_LINKS=$((l+1))
	fi
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	for l in $FAILING_LINKS; do
		veth="ns1eth$l"
		ip -net "$ns" link set "$veth" down
	done
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}

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# $1: IP address
is_v6()
{
	[ -z "${1##*:*}" ]
}

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# $1: ns, $2: port
wait_local_port_listen()
{
	local listener_ns="${1}"
	local port="${2}"

	local port_hex i

	port_hex="$(printf "%04X" "${port}")"
	for i in $(seq 10); do
		ip netns exec "${listener_ns}" cat /proc/net/tcp* | \
			awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" &&
			break
		sleep 0.1
	done
}

rm_addr_count()
{
	ns=${1}

	ip netns exec ${ns} nstat -as | grep MPTcpExtRmAddr | awk '{print $2}'
}

# $1: ns, $2: old rm_addr counter in $ns
wait_rm_addr()
{
	local ns="${1}"
	local old_cnt="${2}"
	local cnt
	local i

	for i in $(seq 10); do
		cnt=$(rm_addr_count ${ns})
		[ "$cnt" = "${old_cnt}" ] || break
		sleep 0.1
	done
}

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do_transfer()
{
	listener_ns="$1"
	connector_ns="$2"
	cl_proto="$3"
	srv_proto="$4"
	connect_addr="$5"
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	test_link_fail="$6"
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	addr_nr_ns1="$7"
	addr_nr_ns2="$8"
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	speed="$9"
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	bkup="${10}"
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	port=$((10000+$TEST_COUNT))
	TEST_COUNT=$((TEST_COUNT+1))

	:> "$cout"
	:> "$sout"
	:> "$capout"

	if [ $capture -eq 1 ]; then
		if [ -z $SUDO_USER ] ; then
			capuser=""
		else
			capuser="-Z $SUDO_USER"
		fi

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		capfile=$(printf "mp_join-%02u-%s.pcap" "$TEST_COUNT" "${listener_ns}")
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		echo "Capturing traffic for test $TEST_COUNT into $capfile"
		ip netns exec ${listener_ns} tcpdump -i any -s 65535 -B 32768 $capuser -w $capfile > "$capout" 2>&1 &
		cappid=$!

		sleep 1
	fi

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	NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \
		nstat -n
	NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \
		nstat -n

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	if [ $speed = "fast" ]; then
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		mptcp_connect="./mptcp_connect -j"
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	elif [ $speed = "slow" ]; then
		mptcp_connect="./mptcp_connect -r 50"
	elif [ $speed = "least" ]; then
		mptcp_connect="./mptcp_connect -r 10"
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	fi

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	local local_addr
	if is_v6 "${connect_addr}"; then
		local_addr="::"
	else
		local_addr="0.0.0.0"
	fi

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	if [ "$test_link_fail" -eq 2 ];then
		timeout ${timeout_test} \
			ip netns exec ${listener_ns} \
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				$mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
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					${local_addr} < "$sinfail" > "$sout" &
	else
		timeout ${timeout_test} \
			ip netns exec ${listener_ns} \
				$mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
					${local_addr} < "$sin" > "$sout" &
	fi
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	spid=$!

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	wait_local_port_listen "${listener_ns}" "${port}"
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	if [ "$test_link_fail" -eq 0 ];then
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		timeout ${timeout_test} \
			ip netns exec ${connector_ns} \
				$mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
					$connect_addr < "$cin" > "$cout" &
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	else
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		( cat "$cinfail" ; sleep 2; link_failure $listener_ns ; cat "$cinfail" ) | \
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			tee "$cinsent" | \
			timeout ${timeout_test} \
				ip netns exec ${connector_ns} \
					$mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
						$connect_addr > "$cout" &
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	fi
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	cpid=$!

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	# let the mptcp subflow be established in background before
	# do endpoint manipulation
	[ $addr_nr_ns1 = "0" -a $addr_nr_ns2 = "0" ] || sleep 1

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	if [ $addr_nr_ns1 -gt 0 ]; then
		let add_nr_ns1=addr_nr_ns1
		counter=2
		while [ $add_nr_ns1 -gt 0 ]; do
			local addr
			if is_v6 "${connect_addr}"; then
				addr="dead:beef:$counter::1"
			else
				addr="10.0.$counter.1"
			fi
			ip netns exec $ns1 ./pm_nl_ctl add $addr flags signal
			let counter+=1
			let add_nr_ns1-=1
		done
	elif [ $addr_nr_ns1 -lt 0 ]; then
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		let rm_nr_ns1=-addr_nr_ns1
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		if [ $rm_nr_ns1 -lt 8 ]; then
			counter=1
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			pos=1
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			dump=(`ip netns exec ${listener_ns} ./pm_nl_ctl dump`)
			if [ ${#dump[@]} -gt 0 ]; then
				while [ $counter -le $rm_nr_ns1 ]
				do
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					id=${dump[$pos]}
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					rm_addr=$(rm_addr_count ${connector_ns})
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					ip netns exec ${listener_ns} ./pm_nl_ctl del $id
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					wait_rm_addr ${connector_ns} ${rm_addr}
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					let counter+=1
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					let pos+=5
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				done
			fi
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		elif [ $rm_nr_ns1 -eq 8 ]; then
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			ip netns exec ${listener_ns} ./pm_nl_ctl flush
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		elif [ $rm_nr_ns1 -eq 9 ]; then
			ip netns exec ${listener_ns} ./pm_nl_ctl del 0 ${connect_addr}
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		fi
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	fi

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	flags="subflow"
	if [[ "${addr_nr_ns2}" = "fullmesh_"* ]]; then
		flags="${flags},fullmesh"
		addr_nr_ns2=${addr_nr_ns2:9}
	fi

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	# if newly added endpoints must be deleted, give the background msk
	# some time to created them
	[ $addr_nr_ns1 -gt 0 -a $addr_nr_ns2 -lt 0 ] && sleep 1

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	if [ $addr_nr_ns2 -gt 0 ]; then
		let add_nr_ns2=addr_nr_ns2
		counter=3
		while [ $add_nr_ns2 -gt 0 ]; do
			local addr
			if is_v6 "${connect_addr}"; then
				addr="dead:beef:$counter::2"
			else
				addr="10.0.$counter.2"
			fi
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			ip netns exec $ns2 ./pm_nl_ctl add $addr flags $flags
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			let counter+=1
			let add_nr_ns2-=1
		done
	elif [ $addr_nr_ns2 -lt 0 ]; then
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		let rm_nr_ns2=-addr_nr_ns2
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		if [ $rm_nr_ns2 -lt 8 ]; then
			counter=1
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			pos=1
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			dump=(`ip netns exec ${connector_ns} ./pm_nl_ctl dump`)
			if [ ${#dump[@]} -gt 0 ]; then
				while [ $counter -le $rm_nr_ns2 ]
				do
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					# rm_addr are serialized, allow the previous one to complete
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					id=${dump[$pos]}
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					rm_addr=$(rm_addr_count ${listener_ns})
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					ip netns exec ${connector_ns} ./pm_nl_ctl del $id
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					wait_rm_addr ${listener_ns} ${rm_addr}
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					let counter+=1
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					let pos+=5
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				done
			fi
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		elif [ $rm_nr_ns2 -eq 8 ]; then
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			ip netns exec ${connector_ns} ./pm_nl_ctl flush
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		elif [ $rm_nr_ns2 -eq 9 ]; then
			local addr
			if is_v6 "${connect_addr}"; then
				addr="dead:beef:1::2"
			else
				addr="10.0.1.2"
			fi
			ip netns exec ${connector_ns} ./pm_nl_ctl del 0 $addr
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		fi
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	fi

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	if [ ! -z $bkup ]; then
		sleep 1
		for netns in "$ns1" "$ns2"; do
			dump=(`ip netns exec $netns ./pm_nl_ctl dump`)
			if [ ${#dump[@]} -gt 0 ]; then
				addr=${dump[${#dump[@]} - 1]}
				backup="ip netns exec $netns ./pm_nl_ctl set $addr flags $bkup"
				$backup
			fi
		done
	fi

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	wait $cpid
	retc=$?
	wait $spid
	rets=$?

	if [ $capture -eq 1 ]; then
	    sleep 1
	    kill $cappid
	fi

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	NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \
		nstat | grep Tcp > /tmp/${listener_ns}.out
	NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \
		nstat | grep Tcp > /tmp/${connector_ns}.out

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	if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
		echo " client exit code $retc, server $rets" 1>&2
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		echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2
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		ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port"
		cat /tmp/${listener_ns}.out
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		echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2
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		ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port"
		cat /tmp/${connector_ns}.out
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		cat "$capout"
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		ret=1
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		return 1
	fi

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	if [ "$test_link_fail" -eq 2 ];then
		check_transfer $sinfail $cout "file received by client"
	else
		check_transfer $sin $cout "file received by client"
	fi
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	retc=$?
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	if [ "$test_link_fail" -eq 0 ];then
		check_transfer $cin $sout "file received by server"
	else
		check_transfer $cinsent $sout "file received by server"
	fi
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	rets=$?

	if [ $retc -eq 0 ] && [ $rets -eq 0 ];then
		cat "$capout"
		return 0
	fi

	cat "$capout"
	return 1
}

make_file()
{
	name=$1
	who=$2
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	size=$3
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	dd if=/dev/urandom of="$name" bs=1024 count=$size 2> /dev/null
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	echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name"

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	echo "Created $name (size $size KB) containing data sent by $who"
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}

run_tests()
{
	listener_ns="$1"
	connector_ns="$2"
	connect_addr="$3"
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	test_linkfail="${4:-0}"
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	addr_nr_ns1="${5:-0}"
	addr_nr_ns2="${6:-0}"
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	speed="${7:-fast}"
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	bkup="${8:-""}"
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	lret=0
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	oldin=""

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	# create the input file for the failure test when
	# the first failure test run
	if [ "$test_linkfail" -ne 0 -a -z "$cinfail" ]; then
		# the client file must be considerably larger
		# of the maximum expected cwin value, or the
		# link utilization will be not predicable
		size=$((RANDOM%2))
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		size=$((size+1))
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		size=$((size*8192))
		size=$((size + ( $RANDOM % 8192) ))
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		cinfail=$(mktemp)
		make_file "$cinfail" "client" $size
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	fi
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	if [ "$test_linkfail" -eq 2 -a -z "$sinfail" ]; then
		size=$((RANDOM%16))
		size=$((size+1))
		size=$((size*2048))
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		sinfail=$(mktemp)
		make_file "$sinfail" "server" $size
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	fi

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	do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP ${connect_addr} \
		${test_linkfail} ${addr_nr_ns1} ${addr_nr_ns2} ${speed} ${bkup}
	lret=$?
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}

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dump_stats()
{
	echo Server ns stats
	ip netns exec $ns1 nstat -as | grep Tcp
	echo Client ns stats
	ip netns exec $ns2 nstat -as | grep Tcp
}

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chk_csum_nr()
{
	local msg=${1:-""}
	local count
	local dump_stats

	if [ ! -z "$msg" ]; then
		printf "%02u" "$TEST_COUNT"
	else
		echo -n "  "
	fi
	printf " %-36s %s" "$msg" "sum"
	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != 0 ]; then
		echo "[fail] got $count data checksum error[s] expected 0"
		ret=1
		dump_stats=1
	else
		echo -n "[ ok ]"
	fi
	echo -n " - csum  "
	count=`ip netns exec $ns2 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != 0 ]; then
		echo "[fail] got $count data checksum error[s] expected 0"
		ret=1
		dump_stats=1
	else
		echo "[ ok ]"
	fi
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	[ "${dump_stats}" = 1 ] && dump_stats
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}

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chk_fail_nr()
{
	local mp_fail_nr_tx=$1
	local mp_fail_nr_rx=$2
	local count
	local dump_stats

	printf "%-39s %s" " " "ftx"
	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPFailTx | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != "$mp_fail_nr_tx" ]; then
		echo "[fail] got $count MP_FAIL[s] TX expected $mp_fail_nr_tx"
		ret=1
		dump_stats=1
	else
		echo -n "[ ok ]"
	fi

	echo -n " - frx   "
	count=`ip netns exec $ns2 nstat -as | grep MPTcpExtMPFailRx | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != "$mp_fail_nr_rx" ]; then
		echo "[fail] got $count MP_FAIL[s] RX expected $mp_fail_nr_rx"
		ret=1
		dump_stats=1
	else
		echo "[ ok ]"
	fi

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	[ "${dump_stats}" = 1 ] && dump_stats
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}

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chk_join_nr()
{
	local msg="$1"
	local syn_nr=$2
	local syn_ack_nr=$3
	local ack_nr=$4
	local count
	local dump_stats

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	printf "%02u %-36s %s" "$TEST_COUNT" "$msg" "syn"
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	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinSynRx | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != "$syn_nr" ]; then
		echo "[fail] got $count JOIN[s] syn expected $syn_nr"
		ret=1
		dump_stats=1
	else
		echo -n "[ ok ]"
	fi

	echo -n " - synack"
	count=`ip netns exec $ns2 nstat -as | grep MPTcpExtMPJoinSynAckRx | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != "$syn_ack_nr" ]; then
		echo "[fail] got $count JOIN[s] synack expected $syn_ack_nr"
		ret=1
		dump_stats=1
	else
		echo -n "[ ok ]"
	fi

	echo -n " - ack"
	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinAckRx | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != "$ack_nr" ]; then
		echo "[fail] got $count JOIN[s] ack expected $ack_nr"
		ret=1
		dump_stats=1
	else
		echo "[ ok ]"
	fi
696
	[ "${dump_stats}" = 1 ] && dump_stats
697 698
	if [ $checksum -eq 1 ]; then
		chk_csum_nr
699
		chk_fail_nr 0 0
700
	fi
701 702
}

703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742
# a negative value for 'stale_max' means no upper bound:
# for bidirectional transfer, if one peer sleep for a while
# - as these tests do - we can have a quite high number of
# stale/recover conversions, proportional to
# sleep duration/ MPTCP-level RTX interval.
chk_stale_nr()
{
	local ns=$1
	local stale_min=$2
	local stale_max=$3
	local stale_delta=$4
	local dump_stats
	local stale_nr
	local recover_nr

	printf "%-39s %-18s" " " "stale"
	stale_nr=`ip netns exec $ns nstat -as | grep MPTcpExtSubflowStale | awk '{print $2}'`
	[ -z "$stale_nr" ] && stale_nr=0
	recover_nr=`ip netns exec $ns nstat -as | grep MPTcpExtSubflowRecover | awk '{print $2}'`
	[ -z "$recover_nr" ] && recover_nr=0

	if [ $stale_nr -lt $stale_min ] ||
	   [ $stale_max -gt 0 -a $stale_nr -gt $stale_max ] ||
	   [ $((stale_nr - $recover_nr)) -ne $stale_delta ]; then
		echo "[fail] got $stale_nr stale[s] $recover_nr recover[s], " \
		     " expected stale in range [$stale_min..$stale_max]," \
		     " stale-recover delta $stale_delta "
		ret=1
		dump_stats=1
	else
		echo "[ ok ]"
	fi

	if [ "${dump_stats}" = 1 ]; then
		echo $ns stats
		ip netns exec $ns ip -s link show
		ip netns exec $ns nstat -as | grep MPTcp
	fi
}

743 744 745 746
chk_add_nr()
{
	local add_nr=$1
	local echo_nr=$2
747 748 749 750 751 752
	local port_nr=${3:-0}
	local syn_nr=${4:-$port_nr}
	local syn_ack_nr=${5:-$port_nr}
	local ack_nr=${6:-$port_nr}
	local mis_syn_nr=${7:-0}
	local mis_ack_nr=${8:-0}
753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774
	local count
	local dump_stats

	printf "%-39s %s" " " "add"
	count=`ip netns exec $ns2 nstat -as | grep MPTcpExtAddAddr | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != "$add_nr" ]; then
		echo "[fail] got $count ADD_ADDR[s] expected $add_nr"
		ret=1
		dump_stats=1
	else
		echo -n "[ ok ]"
	fi

	echo -n " - echo  "
	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtEchoAdd | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != "$echo_nr" ]; then
		echo "[fail] got $count ADD_ADDR echo[s] expected $echo_nr"
		ret=1
		dump_stats=1
	else
775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855
		echo -n "[ ok ]"
	fi

	if [ $port_nr -gt 0 ]; then
		echo -n " - pt "
		count=`ip netns exec $ns2 nstat -as | grep MPTcpExtPortAdd | awk '{print $2}'`
		[ -z "$count" ] && count=0
		if [ "$count" != "$port_nr" ]; then
			echo "[fail] got $count ADD_ADDR[s] with a port-number expected $port_nr"
			ret=1
			dump_stats=1
		else
			echo "[ ok ]"
		fi

		printf "%-39s %s" " " "syn"
		count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortSynRx |
			awk '{print $2}'`
		[ -z "$count" ] && count=0
		if [ "$count" != "$syn_nr" ]; then
			echo "[fail] got $count JOIN[s] syn with a different \
				port-number expected $syn_nr"
			ret=1
			dump_stats=1
		else
			echo -n "[ ok ]"
		fi

		echo -n " - synack"
		count=`ip netns exec $ns2 nstat -as | grep MPTcpExtMPJoinPortSynAckRx |
			awk '{print $2}'`
		[ -z "$count" ] && count=0
		if [ "$count" != "$syn_ack_nr" ]; then
			echo "[fail] got $count JOIN[s] synack with a different \
				port-number expected $syn_ack_nr"
			ret=1
			dump_stats=1
		else
			echo -n "[ ok ]"
		fi

		echo -n " - ack"
		count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortAckRx |
			awk '{print $2}'`
		[ -z "$count" ] && count=0
		if [ "$count" != "$ack_nr" ]; then
			echo "[fail] got $count JOIN[s] ack with a different \
				port-number expected $ack_nr"
			ret=1
			dump_stats=1
		else
			echo "[ ok ]"
		fi

		printf "%-39s %s" " " "syn"
		count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortSynRx |
			awk '{print $2}'`
		[ -z "$count" ] && count=0
		if [ "$count" != "$mis_syn_nr" ]; then
			echo "[fail] got $count JOIN[s] syn with a mismatched \
				port-number expected $mis_syn_nr"
			ret=1
			dump_stats=1
		else
			echo -n "[ ok ]"
		fi

		echo -n " - ack   "
		count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortAckRx |
			awk '{print $2}'`
		[ -z "$count" ] && count=0
		if [ "$count" != "$mis_ack_nr" ]; then
			echo "[fail] got $count JOIN[s] ack with a mismatched \
				port-number expected $mis_ack_nr"
			ret=1
			dump_stats=1
		else
			echo "[ ok ]"
		fi
	else
		echo ""
856 857
	fi

858
	[ "${dump_stats}" = 1 ] && dump_stats
859 860
}

861 862 863 864
chk_rm_nr()
{
	local rm_addr_nr=$1
	local rm_subflow_nr=$2
865
	local invert=${3:-""}
866 867
	local count
	local dump_stats
868 869 870 871 872 873 874 875 876 877
	local addr_ns
	local subflow_ns

	if [ -z $invert ]; then
		addr_ns=$ns1
		subflow_ns=$ns2
	elif [ $invert = "invert" ]; then
		addr_ns=$ns2
		subflow_ns=$ns1
	fi
878 879

	printf "%-39s %s" " " "rm "
880
	count=`ip netns exec $addr_ns nstat -as | grep MPTcpExtRmAddr | awk '{print $2}'`
881 882 883 884 885 886 887 888 889 890
	[ -z "$count" ] && count=0
	if [ "$count" != "$rm_addr_nr" ]; then
		echo "[fail] got $count RM_ADDR[s] expected $rm_addr_nr"
		ret=1
		dump_stats=1
	else
		echo -n "[ ok ]"
	fi

	echo -n " - sf    "
891
	count=`ip netns exec $subflow_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}'`
892 893 894 895 896 897 898 899 900
	[ -z "$count" ] && count=0
	if [ "$count" != "$rm_subflow_nr" ]; then
		echo "[fail] got $count RM_SUBFLOW[s] expected $rm_subflow_nr"
		ret=1
		dump_stats=1
	else
		echo "[ ok ]"
	fi

901
	[ "${dump_stats}" = 1 ] && dump_stats
902 903
}

904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932
chk_prio_nr()
{
	local mp_prio_nr_tx=$1
	local mp_prio_nr_rx=$2
	local count
	local dump_stats

	printf "%-39s %s" " " "ptx"
	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioTx | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != "$mp_prio_nr_tx" ]; then
		echo "[fail] got $count MP_PRIO[s] TX expected $mp_prio_nr_tx"
		ret=1
		dump_stats=1
	else
		echo -n "[ ok ]"
	fi

	echo -n " - prx   "
	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioRx | awk '{print $2}'`
	[ -z "$count" ] && count=0
	if [ "$count" != "$mp_prio_nr_rx" ]; then
		echo "[fail] got $count MP_PRIO[s] RX expected $mp_prio_nr_rx"
		ret=1
		dump_stats=1
	else
		echo "[ ok ]"
	fi

933
	[ "${dump_stats}" = 1 ] && dump_stats
934 935
}

936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956
chk_link_usage()
{
	local ns=$1
	local link=$2
	local out=$3
	local expected_rate=$4
	local tx_link=`ip netns exec $ns cat /sys/class/net/$link/statistics/tx_bytes`
	local tx_total=`ls -l $out | awk '{print $5}'`
	local tx_rate=$((tx_link * 100 / $tx_total))
	local tolerance=5

	printf "%-39s %-18s" " " "link usage"
	if [ $tx_rate -lt $((expected_rate - $tolerance)) -o \
	     $tx_rate -gt $((expected_rate + $tolerance)) ]; then
		echo "[fail] got $tx_rate% usage, expected $expected_rate%"
		ret=1
	else
		echo "[ ok ]"
	fi
}

957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972
wait_for_tw()
{
	local timeout_ms=$((timeout_poll * 1000))
	local time=0
	local ns=$1

	while [ $time -lt $timeout_ms ]; do
		local cnt=$(ip netns exec $ns ss -t state time-wait |wc -l)

		[ "$cnt" = 1 ] && return 1
		time=$((time + 100))
		sleep 0.1
	done
	return 1
}

973 974 975 976 977 978 979 980
subflows_tests()
{
	reset
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "no JOIN" "0" "0" "0"

	# subflow limited by client
	reset
981 982
	ip netns exec $ns1 ./pm_nl_ctl limits 0 0
	ip netns exec $ns2 ./pm_nl_ctl limits 0 0
983 984 985 986 987 988
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "single subflow, limited by client" 0 0 0

	# subflow limited by server
	reset
989
	ip netns exec $ns1 ./pm_nl_ctl limits 0 0
990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "single subflow, limited by server" 1 1 0

	# subflow
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "single subflow" 1 1 1

	# multiple subflows
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "multiple subflows" 2 2 2

1012
	# multiple subflows limited by server
1013 1014 1015 1016 1017 1018 1019
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "multiple subflows, limited by server" 2 2 1
1020 1021 1022 1023 1024 1025 1026 1027

	# single subflow, dev
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow dev ns2eth3
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "single subflow, dev" 1 1 1
1028 1029
}

1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084
subflows_error_tests()
{
	# If a single subflow is configured, and matches the MPC src
	# address, no additional subflow should be created
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.1.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
	chk_join_nr "no MPC reuse with single endpoint" 0 0 0

	# multiple subflows, with subflow creation error
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
	ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
	chk_join_nr "multi subflows, with failing subflow" 1 1 1

	# multiple subflows, with subflow timeout on MPJ
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
	ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j DROP
	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
	chk_join_nr "multi subflows, with subflow timeout" 1 1 1

	# multiple subflows, check that the endpoint corresponding to
	# closed subflow (due to reset) is not reused if additional
	# subflows are added later
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow &

	# updates in the child shell do not have any effect here, we
	# need to bump the test counter for the above case
	TEST_COUNT=$((TEST_COUNT+1))

	# mpj subflow will be in TW after the reset
	wait_for_tw $ns2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
	wait

	# additional subflow could be created only if the PM select
	# the later endpoint, skipping the already used one
	chk_join_nr "multi subflows, fair usage on close" 1 1 1
}

1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125
signal_address_tests()
{
	# add_address, unused
	reset
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "unused signal address" 0 0 0
	chk_add_nr 1 1

	# accept and use add_addr
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "signal address" 1 1 1
	chk_add_nr 1 1

	# accept and use add_addr with an additional subflow
	# note: signal address in server ns and local addresses in client ns must
	# belong to different subnets or one of the listed local address could be
	# used for 'add_addr' subflow
	reset
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "subflow and signal" 2 2 2
	chk_add_nr 1 1

	# accept and use add_addr with additional subflows
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "multiple subflows and signal" 3 3 3
	chk_add_nr 1 1
1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147

	# signal addresses
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 3 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.4.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 3 3
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "signal addresses" 3 3 3
	chk_add_nr 3 3

	# signal invalid addresses
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 3 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.12.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.14.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 3 3
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "signal invalid addresses" 1 1 1
	chk_add_nr 3 3
1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161

	# signal addresses race test
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 4 4
	ip netns exec $ns2 ./pm_nl_ctl limits 4 4
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.4.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.1.2 flags signal
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags signal
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags signal
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags signal
	run_tests $ns1 $ns2 10.0.1.1
1162 1163 1164 1165

	# the server will not signal the address terminating
	# the MPC subflow
	chk_add_nr 3 3
1166 1167 1168 1169 1170 1171
}

link_failure_tests()
{
	# accept and use add_addr with additional subflows and link loss
	reset
1172 1173 1174 1175 1176 1177 1178 1179

	# without any b/w limit each veth could spool the packets and get
	# them acked at xmit time, so that the corresponding subflow will
	# have almost always no outstanding pkts, the scheduler will pick
	# always the first subflow and we will have hard time testing
	# active backup and link switch-over.
	# Let's set some arbitrary (low) virtual link limits.
	init_shapers
1180
	ip netns exec $ns1 ./pm_nl_ctl limits 0 3
1181
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
1182
	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
1183 1184
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 dev ns2eth4 flags subflow
1185 1186 1187
	run_tests $ns1 $ns2 10.0.1.1 1
	chk_join_nr "multiple flows, signal, link failure" 3 3 3
	chk_add_nr 1 1
1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245
	chk_stale_nr $ns2 1 5 1

	# accept and use add_addr with additional subflows and link loss
	# for bidirectional transfer
	reset
	init_shapers
	ip netns exec $ns1 ./pm_nl_ctl limits 0 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 dev ns2eth4 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 2
	chk_join_nr "multi flows, signal, bidi, link fail" 3 3 3
	chk_add_nr 1 1
	chk_stale_nr $ns2 1 -1 1

	# 2 subflows plus 1 backup subflow with a lossy link, backup
	# will never be used
	reset
	init_shapers
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
	export FAILING_LINKS="1"
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow,backup
	run_tests $ns1 $ns2 10.0.1.1 1
	chk_join_nr "backup subflow unused, link failure" 2 2 2
	chk_add_nr 1 1
	chk_link_usage $ns2 ns2eth3 $cinsent 0

	# 2 lossy links after half transfer, backup will get half of
	# the traffic
	reset
	init_shapers
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow,backup
	export FAILING_LINKS="1 2"
	run_tests $ns1 $ns2 10.0.1.1 1
	chk_join_nr "backup flow used, multi links fail" 2 2 2
	chk_add_nr 1 1
	chk_stale_nr $ns2 2 4 2
	chk_link_usage $ns2 ns2eth3 $cinsent 50

	# use a backup subflow with the first subflow on a lossy link
	# for bidirectional transfer
	reset
	init_shapers
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow,backup
	run_tests $ns1 $ns2 10.0.1.1 2
	chk_join_nr "backup flow used, bidi, link failure" 2 2 2
	chk_add_nr 1 1
	chk_stale_nr $ns2 1 -1 2
	chk_link_usage $ns2 ns2eth3 $cinsent 50
1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266
}

add_addr_timeout_tests()
{
	# add_addr timeout
	reset_with_add_addr_timeout
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
	chk_join_nr "signal address, ADD_ADDR timeout" 1 1 1
	chk_add_nr 4 0

	# add_addr timeout IPv6
	reset_with_add_addr_timeout 6
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add dead:beef:2::1 flags signal
	run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
	chk_join_nr "signal address, ADD_ADDR6 timeout" 1 1 1
	chk_add_nr 4 0
1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286

	# signal addresses timeout
	reset_with_add_addr_timeout
	ip netns exec $ns1 ./pm_nl_ctl limits 2 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 2 2
	run_tests $ns1 $ns2 10.0.1.1 0 0 0 least
	chk_join_nr "signal addresses, ADD_ADDR timeout" 2 2 2
	chk_add_nr 8 0

	# signal invalid addresses timeout
	reset_with_add_addr_timeout
	ip netns exec $ns1 ./pm_nl_ctl limits 2 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.12.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 2 2
	run_tests $ns1 $ns2 10.0.1.1 0 0 0 least
	chk_join_nr "invalid address, ADD_ADDR timeout" 1 1 1
	chk_add_nr 8 0
1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317
}

remove_tests()
{
	# single subflow, remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 0 0 -1 slow
	chk_join_nr "remove single subflow" 1 1 1
	chk_rm_nr 1 1

	# multiple subflows, remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 0 0 -2 slow
	chk_join_nr "remove multiple subflows" 2 2 2
	chk_rm_nr 2 2

	# single address, remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
	chk_join_nr "remove single address" 1 1 1
	chk_add_nr 1 1
1318
	chk_rm_nr 1 1 invert
1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342

	# subflow and signal, remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 0 -1 -1 slow
	chk_join_nr "remove subflow and signal" 2 2 2
	chk_add_nr 1 1
	chk_rm_nr 1 1

	# subflows and signal, remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 0 -1 -2 slow
	chk_join_nr "remove subflows and signal" 3 3 3
	chk_add_nr 1 1
	chk_rm_nr 2 2

1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366
	# addresses remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 3 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal id 250
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.4.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 3 3
	run_tests $ns1 $ns2 10.0.1.1 0 -3 0 slow
	chk_join_nr "remove addresses" 3 3 3
	chk_add_nr 3 3
	chk_rm_nr 3 3 invert

	# invalid addresses remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 3 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.12.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.14.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 3 3
	run_tests $ns1 $ns2 10.0.1.1 0 -3 0 slow
	chk_join_nr "remove invalid addresses" 1 1 1
	chk_add_nr 3 3
	chk_rm_nr 3 1 invert

1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377
	# subflows and signal, flush
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
	chk_join_nr "flush subflows and signal" 3 3 3
	chk_add_nr 1 1
	chk_rm_nr 2 2
1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400

	# subflows flush
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 3 3
	ip netns exec $ns2 ./pm_nl_ctl limits 3 3
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow id 150
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
	chk_join_nr "flush subflows" 3 3 3
	chk_rm_nr 3 3

	# addresses flush
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 3 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal id 250
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.4.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 3 3
	run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
	chk_join_nr "flush addresses" 3 3 3
	chk_add_nr 3 3
	chk_rm_nr 3 3 invert
1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412

	# invalid addresses flush
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 3 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.12.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.14.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 3 3
	run_tests $ns1 $ns2 10.0.1.1 0 -8 0 slow
	chk_join_nr "flush invalid addresses" 1 1 1
	chk_add_nr 3 3
	chk_rm_nr 3 1 invert
1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431

	# remove id 0 subflow
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 0 0 -9 slow
	chk_join_nr "remove id 0 subflow" 1 1 1
	chk_rm_nr 1 1

	# remove id 0 address
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	run_tests $ns1 $ns2 10.0.1.1 0 -9 0 slow
	chk_join_nr "remove id 0 address" 1 1 1
	chk_add_nr 1 1
	chk_rm_nr 1 1 invert
1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479
}

add_tests()
{
	# add single subflow
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow
	chk_join_nr "add single subflow" 1 1 1

	# add signal address
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	run_tests $ns1 $ns2 10.0.1.1 0 1 0 slow
	chk_join_nr "add signal address" 1 1 1
	chk_add_nr 1 1

	# add multiple subflows
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
	run_tests $ns1 $ns2 10.0.1.1 0 0 2 slow
	chk_join_nr "add multiple subflows" 2 2 2

	# add multiple subflows IPv6
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
	run_tests $ns1 $ns2 dead:beef:1::1 0 0 2 slow
	chk_join_nr "add multiple subflows IPv6" 2 2 2

	# add multiple addresses IPv6
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 2 2
	run_tests $ns1 $ns2 dead:beef:1::1 0 2 0 slow
	chk_join_nr "add multiple addresses IPv6" 2 2 2
	chk_add_nr 2 2
}

ipv6_tests()
{
	# subflow IPv6
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
1480
	ip netns exec $ns2 ./pm_nl_ctl add dead:beef:3::2 dev ns2eth3 flags subflow
1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507
	run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
	chk_join_nr "single subflow IPv6" 1 1 1

	# add_address, unused IPv6
	reset
	ip netns exec $ns1 ./pm_nl_ctl add dead:beef:2::1 flags signal
	run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
	chk_join_nr "unused signal address IPv6" 0 0 0
	chk_add_nr 1 1

	# signal address IPv6
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns1 ./pm_nl_ctl add dead:beef:2::1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
	chk_join_nr "single address IPv6" 1 1 1
	chk_add_nr 1 1

	# single address IPv6, remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns1 ./pm_nl_ctl add dead:beef:2::1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	run_tests $ns1 $ns2 dead:beef:1::1 0 -1 0 slow
	chk_join_nr "remove single address IPv6" 1 1 1
	chk_add_nr 1 1
1508
	chk_rm_nr 1 1 invert
1509 1510 1511 1512 1513 1514

	# subflow and signal IPv6, remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns1 ./pm_nl_ctl add dead:beef:2::1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
1515
	ip netns exec $ns2 ./pm_nl_ctl add dead:beef:3::2 dev ns2eth3 flags subflow
1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650
	run_tests $ns1 $ns2 dead:beef:1::1 0 -1 -1 slow
	chk_join_nr "remove subflow and signal IPv6" 2 2 2
	chk_add_nr 1 1
	chk_rm_nr 1 1
}

v4mapped_tests()
{
	# subflow IPv4-mapped to IPv4-mapped
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add "::ffff:10.0.3.2" flags subflow
	run_tests $ns1 $ns2 "::ffff:10.0.1.1"
	chk_join_nr "single subflow IPv4-mapped" 1 1 1

	# signal address IPv4-mapped with IPv4-mapped sk
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add "::ffff:10.0.2.1" flags signal
	run_tests $ns1 $ns2 "::ffff:10.0.1.1"
	chk_join_nr "signal address IPv4-mapped" 1 1 1
	chk_add_nr 1 1

	# subflow v4-map-v6
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 "::ffff:10.0.1.1"
	chk_join_nr "single subflow v4-map-v6" 1 1 1

	# signal address v4-map-v6
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 "::ffff:10.0.1.1"
	chk_join_nr "signal address v4-map-v6" 1 1 1
	chk_add_nr 1 1

	# subflow v6-map-v4
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add "::ffff:10.0.3.2" flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "single subflow v6-map-v4" 1 1 1

	# signal address v6-map-v4
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add "::ffff:10.0.2.1" flags signal
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "signal address v6-map-v4" 1 1 1
	chk_add_nr 1 1

	# no subflow IPv6 to v4 address
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add dead:beef:2::2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "no JOIN with diff families v4-v6" 0 0 0

	# no subflow IPv6 to v4 address even if v6 has a valid v4 at the end
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add dead:beef:2::10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "no JOIN with diff families v4-v6-2" 0 0 0

	# no subflow IPv4 to v6 address, no need to slow down too then
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 dead:beef:1::1
	chk_join_nr "no JOIN with diff families v6-v4" 0 0 0
}

backup_tests()
{
	# single subflow, backup
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow,backup
	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow nobackup
	chk_join_nr "single subflow, backup" 1 1 1
	chk_prio_nr 0 1

	# single address, backup
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
	chk_join_nr "single address, backup" 1 1 1
	chk_add_nr 1 1
	chk_prio_nr 1 0
}

add_addr_ports_tests()
{
	# signal address with port
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal port 10100
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "signal address with port" 1 1 1
	chk_add_nr 1 1 1

	# subflow and signal with port
	reset
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal port 10100
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "subflow and signal with port" 2 2 2
	chk_add_nr 1 1 1

	# single address with port, remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal port 10100
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
	chk_join_nr "remove single address with port" 1 1 1
	chk_add_nr 1 1 1
1651
	chk_rm_nr 1 1 invert
1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670

	# subflow and signal with port, remove
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal port 10100
	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1 0 -1 -1 slow
	chk_join_nr "remove subflow and signal with port" 2 2 2
	chk_add_nr 1 1 1
	chk_rm_nr 1 1

	# subflows and signal with port, flush
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal port 10100
	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags subflow
1671
	run_tests $ns1 $ns2 10.0.1.1 0 -8 -2 slow
1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722
	chk_join_nr "flush subflows and signal with port" 3 3 3
	chk_add_nr 1 1
	chk_rm_nr 2 2

	# multiple addresses with port
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 2 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal port 10100
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal port 10100
	ip netns exec $ns2 ./pm_nl_ctl limits 2 2
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "multiple addresses with port" 2 2 2
	chk_add_nr 2 2 2

	# multiple addresses with ports
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 2 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal port 10100
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal port 10101
	ip netns exec $ns2 ./pm_nl_ctl limits 2 2
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "multiple addresses with ports" 2 2 2
	chk_add_nr 2 2 2
}

syncookies_tests()
{
	# single subflow, syncookies
	reset_with_cookies
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "single subflow with syn cookies" 1 1 1

	# multiple subflows with syn cookies
	reset_with_cookies
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "multiple subflows with syn cookies" 2 2 2

	# multiple subflows limited by server
	reset_with_cookies
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
1723
	chk_join_nr "subflows limited by server w cookies" 2 1 1
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	# test signal address with cookies
	reset_with_cookies
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "signal address with syn cookies" 1 1 1
	chk_add_nr 1 1

	# test cookie with subflow and signal
	reset_with_cookies
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "subflow and signal w cookies" 2 2 2
	chk_add_nr 1 1

	# accept and use add_addr with additional subflows
	reset_with_cookies
	ip netns exec $ns1 ./pm_nl_ctl limits 0 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "subflows and signal w. cookies" 3 3 3
	chk_add_nr 1 1
}

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checksum_tests()
{
	# checksum test 0 0
	reset_with_checksum 0 0
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	run_tests $ns1 $ns2 10.0.1.1
	chk_csum_nr "checksum test 0 0"

	# checksum test 1 1
	reset_with_checksum 1 1
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	run_tests $ns1 $ns2 10.0.1.1
	chk_csum_nr "checksum test 1 1"

	# checksum test 0 1
	reset_with_checksum 0 1
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	run_tests $ns1 $ns2 10.0.1.1
	chk_csum_nr "checksum test 0 1"

	# checksum test 1 0
	reset_with_checksum 1 0
	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
	run_tests $ns1 $ns2 10.0.1.1
	chk_csum_nr "checksum test 1 0"
}

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deny_join_id0_tests()
{
	# subflow allow join id0 ns1
	reset_with_allow_join_id0 1 0
	ip netns exec $ns1 ./pm_nl_ctl limits 1 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "single subflow allow join id0 ns1" 1 1 1

	# subflow allow join id0 ns2
	reset_with_allow_join_id0 0 1
	ip netns exec $ns1 ./pm_nl_ctl limits 1 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "single subflow allow join id0 ns2" 0 0 0

	# signal address allow join id0 ns1
	# ADD_ADDRs are not affected by allow_join_id0 value.
	reset_with_allow_join_id0 1 0
	ip netns exec $ns1 ./pm_nl_ctl limits 1 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "signal address allow join id0 ns1" 1 1 1
	chk_add_nr 1 1

	# signal address allow join id0 ns2
	# ADD_ADDRs are not affected by allow_join_id0 value.
	reset_with_allow_join_id0 0 1
	ip netns exec $ns1 ./pm_nl_ctl limits 1 1
	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "signal address allow join id0 ns2" 1 1 1
	chk_add_nr 1 1

	# subflow and address allow join id0 ns1
	reset_with_allow_join_id0 1 0
	ip netns exec $ns1 ./pm_nl_ctl limits 2 2
	ip netns exec $ns2 ./pm_nl_ctl limits 2 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "subflow and address allow join id0 1" 2 2 2

	# subflow and address allow join id0 ns2
	reset_with_allow_join_id0 0 1
	ip netns exec $ns1 ./pm_nl_ctl limits 2 2
	ip netns exec $ns2 ./pm_nl_ctl limits 2 2
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
	run_tests $ns1 $ns2 10.0.1.1
	chk_join_nr "subflow and address allow join id0 2" 1 1 1
}

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fullmesh_tests()
{
	# fullmesh 1
	# 2 fullmesh addrs in ns2, added before the connection,
	# 1 non-fullmesh addr in ns1, added during the connection.
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 0 4
	ip netns exec $ns2 ./pm_nl_ctl limits 1 4
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow,fullmesh
	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow,fullmesh
	run_tests $ns1 $ns2 10.0.1.1 0 1 0 slow
	chk_join_nr "fullmesh test 2x1" 4 4 4
	chk_add_nr 1 1

	# fullmesh 2
	# 1 non-fullmesh addr in ns1, added before the connection,
	# 1 fullmesh addr in ns2, added during the connection.
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 1 3
	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_1 slow
	chk_join_nr "fullmesh test 1x1" 3 3 3
	chk_add_nr 1 1

	# fullmesh 3
	# 1 non-fullmesh addr in ns1, added before the connection,
	# 2 fullmesh addrs in ns2, added during the connection.
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 2 5
	ip netns exec $ns2 ./pm_nl_ctl limits 1 5
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
	chk_join_nr "fullmesh test 1x2" 5 5 5
	chk_add_nr 1 1

	# fullmesh 4
	# 1 non-fullmesh addr in ns1, added before the connection,
	# 2 fullmesh addrs in ns2, added during the connection,
	# limit max_subflows to 4.
	reset
	ip netns exec $ns1 ./pm_nl_ctl limits 2 4
	ip netns exec $ns2 ./pm_nl_ctl limits 1 4
	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
	chk_join_nr "fullmesh test 1x2, limited" 4 4 4
	chk_add_nr 1 1
}

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all_tests()
{
	subflows_tests
1896
	subflows_error_tests
1897 1898 1899 1900 1901 1902 1903 1904 1905 1906
	signal_address_tests
	link_failure_tests
	add_addr_timeout_tests
	remove_tests
	add_tests
	ipv6_tests
	v4mapped_tests
	backup_tests
	add_addr_ports_tests
	syncookies_tests
1907
	checksum_tests
1908
	deny_join_id0_tests
1909
	fullmesh_tests
1910 1911 1912 1913 1914 1915
}

usage()
{
	echo "mptcp_join usage:"
	echo "  -f subflows_tests"
1916
	echo "  -e subflows_error_tests"
1917 1918 1919 1920 1921 1922 1923 1924 1925
	echo "  -s signal_address_tests"
	echo "  -l link_failure_tests"
	echo "  -t add_addr_timeout_tests"
	echo "  -r remove_tests"
	echo "  -a add_tests"
	echo "  -6 ipv6_tests"
	echo "  -4 v4mapped_tests"
	echo "  -b backup_tests"
	echo "  -p add_addr_ports_tests"
1926
	echo "  -k syncookies_tests"
1927
	echo "  -S checksum_tests"
1928
	echo "  -d deny_join_id0_tests"
1929
	echo "  -m fullmesh_tests"
1930
	echo "  -c capture pcap files"
1931
	echo "  -C enable data checksum"
1932 1933 1934
	echo "  -h help"
}

1935 1936 1937
sin=$(mktemp)
sout=$(mktemp)
cin=$(mktemp)
1938
cinsent=$(mktemp)
1939 1940
cout=$(mktemp)
init
1941 1942
make_file "$cin" "client" 1
make_file "$sin" "server" 1
1943 1944
trap cleanup EXIT

1945
for arg in "$@"; do
1946
	# check for "capture/checksum" args before launching tests
1947 1948 1949
	if [[ "${arg}" =~ ^"-"[0-9a-zA-Z]*"c"[0-9a-zA-Z]*$ ]]; then
		capture=1
	fi
1950 1951 1952
	if [[ "${arg}" =~ ^"-"[0-9a-zA-Z]*"C"[0-9a-zA-Z]*$ ]]; then
		checksum=1
	fi
1953

1954 1955
	# exception for the capture/checksum options, the rest means: a part of the tests
	if [ "${arg}" != "-c" ] && [ "${arg}" != "-C" ]; then
1956 1957 1958 1959 1960
		do_all_tests=0
	fi
done

if [ $do_all_tests -eq 1 ]; then
1961 1962 1963 1964
	all_tests
	exit $ret
fi

1965
while getopts 'fesltra64bpkdmchCS' opt; do
1966 1967 1968 1969
	case $opt in
		f)
			subflows_tests
			;;
1970 1971 1972
		e)
			subflows_error_tests
			;;
1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
		s)
			signal_address_tests
			;;
		l)
			link_failure_tests
			;;
		t)
			add_addr_timeout_tests
			;;
		r)
			remove_tests
			;;
		a)
			add_tests
			;;
		6)
			ipv6_tests
			;;
		4)
			v4mapped_tests
			;;
		b)
			backup_tests
			;;
		p)
			add_addr_ports_tests
			;;
2000
		k)
2001 2002
			syncookies_tests
			;;
2003 2004 2005
		S)
			checksum_tests
			;;
2006 2007 2008
		d)
			deny_join_id0_tests
			;;
2009 2010 2011
		m)
			fullmesh_tests
			;;
2012 2013
		c)
			;;
2014 2015
		C)
			;;
2016 2017 2018 2019 2020
		h | *)
			usage
			;;
	esac
done
2021

2022
exit $ret