selftests: mptcp: enhance userspace pm tests

Some userspace pm tests failed since pm listener events have been added.
Now MPTCP_EVENT_LISTENER_CREATED event becomes the first item in the
events list like this:

 type:15,family:2,sport:10006,saddr4:0.0.0.0
 type:1,token:3701282876,server_side:1,family:2,saddr4:10.0.1.1,...

And no token value in this MPTCP_EVENT_LISTENER_CREATED event.

This patch fixes this by specifying the type 1 item to search for token
values.
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -830,7 +830,8 @@ do_transfer()
 			if [ $userspace_pm -eq 0 ]; then
 				pm_nl_add_endpoint $ns1 $addr flags signal
 			else
-				tk=$(sed -n 's/.*\(token:\)\([[:digit:]]*\).*$/\2/p;q' "$evts_ns1")
+				tk=$(grep "type:1," "$evts_ns1" |
+				     sed -n 's/.*\(token:\)\([[:digit:]]*\).*$/\2/p;q')
 				ip netns exec ${listener_ns} ./pm_nl_ctl ann $addr token $tk id $id
 				sleep 1
 				ip netns exec ${listener_ns} ./pm_nl_ctl rem token $tk id $id

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

@@ -172,9 +172,10 @@ make_connection()
 	client_serverside=$(sed --unbuffered -n 's/.*\(server_side:\)\([[:digit:]]*\).*$/\2/p;q'\
 				      "$client_evts")
 	kill_wait $server_evts_pid
-	server_token=$(sed --unbuffered -n 's/.*\(token:\)\([[:digit:]]*\).*$/\2/p;q' "$server_evts")
-	server_serverside=$(sed --unbuffered -n 's/.*\(server_side:\)\([[:digit:]]*\).*$/\2/p;q'\
-				      "$server_evts")
+	server_token=$(grep "type:1," "$server_evts" |
+		       sed --unbuffered -n 's/.*\(token:\)\([[:digit:]]*\).*$/\2/p;q')
+	server_serverside=$(grep "type:1," "$server_evts" |
+			    sed --unbuffered -n 's/.*\(server_side:\)\([[:digit:]]*\).*$/\2/p;q')
 	rm -f "$client_evts" "$server_evts" "$file"
 
 	if [ "$client_token" != "" ] && [ "$server_token" != "" ] && [ "$client_serverside" = 0 ] &&