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

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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: Florian Westphal <fw@strlen.de>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal 2020-07-30 21:25:57 +02:00 committed by David S. Miller
parent 9466a1cceb
commit fed61c4b58
1 changed files with 47 additions and 0 deletions
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47
tools/testing/selftests/net/mptcp/mptcp_connect.sh
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@ -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"