Commit fed61c4b authored by Florian Westphal's avatar Florian Westphal Committed by David S. Miller
Browse files

selftests: mptcp: make 2nd net namespace use tcp syn cookies unconditionally 



check we can establish connections also when syn cookies are in use.

Check that
MPTcpExtMPCapableSYNRX and MPTcpExtMPCapableACKRX increase for each
MPTCP test.

Check TcpExtSyncookiesSent and TcpExtSyncookiesRecv increase in netns2.

Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Reviewed-by: default avatarMat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9466a1cc

tools/testing/selftests/net/mptcp/mptcp_connect.sh

+47 −0
Original line number Diff line number Diff line
@@ -196,6 +196,9 @@ ip -net "$ns4" link set ns4eth3 up 
ip -net "$ns4" route add default via 10.0.3.2

ip -net "$ns4" route add default via dead:beef:3::2



# use TCP syn cookies, even if no flooding was detected.

ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2



set_ethtool_flags() {

	local ns="$1"

	local dev="$2"
@@ -407,6 +410,11 @@ do_transfer() 
		sleep 1

	fi



	local stat_synrx_last_l=$(ip netns exec ${listener_ns} nstat -z -a MPTcpExtMPCapableSYNRX | while read a count c rest ;do  echo $count;done)

	local stat_ackrx_last_l=$(ip netns exec ${listener_ns} nstat -z -a MPTcpExtMPCapableACKRX | while read a count c rest ;do  echo $count;done)

	local stat_cookietx_last=$(ip netns exec ${listener_ns} nstat -z -a TcpExtSyncookiesSent | while read a count c rest ;do  echo $count;done)

	local stat_cookierx_last=$(ip netns exec ${listener_ns} nstat -z -a TcpExtSyncookiesRecv | while read a count c rest ;do  echo $count;done)



	ip netns exec ${listener_ns} ./mptcp_connect -t $timeout -l -p $port -s ${srv_proto} $extra_args $local_addr < "$sin" > "$sout" &

	local spid=$!
@@ -450,6 +458,45 @@ do_transfer() 
	check_transfer $cin $sout "file received by server"

	rets=$?



	local stat_synrx_now_l=$(ip netns exec ${listener_ns} nstat -z -a MPTcpExtMPCapableSYNRX  | while read a count c rest ;do  echo $count;done)

	local stat_ackrx_now_l=$(ip netns exec ${listener_ns} nstat -z -a MPTcpExtMPCapableACKRX  | while read a count c rest ;do  echo $count;done)



	local stat_cookietx_now=$(ip netns exec ${listener_ns} nstat -z -a TcpExtSyncookiesSent | while read a count c rest ;do  echo $count;done)

	local stat_cookierx_now=$(ip netns exec ${listener_ns} nstat -z -a TcpExtSyncookiesRecv | while read a count c rest ;do  echo $count;done)



	expect_synrx=$((stat_synrx_last_l))

	expect_ackrx=$((stat_ackrx_last_l))



	cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies)

	cookies=${cookies##*=}



	if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then

		expect_synrx=$((stat_synrx_last_l+1))

		expect_ackrx=$((stat_ackrx_last_l+1))

	fi

	if [ $cookies -eq 2 ];then

		if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then

			echo "${listener_ns} CookieSent: ${cl_proto} -> ${srv_proto}: did not advance"

		fi

		if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then

			echo "${listener_ns} CookieRecv: ${cl_proto} -> ${srv_proto}: did not advance"

		fi

	else

		if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then

			echo "${listener_ns} CookieSent: ${cl_proto} -> ${srv_proto}: changed"

		fi

		if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then

			echo "${listener_ns} CookieRecv: ${cl_proto} -> ${srv_proto}: changed"

		fi

	fi



	if [ $expect_synrx -ne $stat_synrx_now_l ] ;then

		echo "${listener_ns} SYNRX: ${cl_proto} -> ${srv_proto}: expect ${expect_synrx}, got ${stat_synrx_now_l}"

	fi

	if [ $expect_ackrx -ne $stat_ackrx_now_l ] ;then

		echo "${listener_ns} ACKRX: ${cl_proto} -> ${srv_proto}: expect ${expect_synrx}, got ${stat_synrx_now_l}"

	fi



	if [ $retc -eq 0 ] && [ $rets -eq 0 ];then

		echo "$duration [ OK ]"

		cat "$capout"