selftests: mptcp: add testcases for removing addrs

This patch added the testcases for removing a list of addresses. Used
the netlink to flush the addresses in the testcases.
Signed-off-by: NGeliang Tang <geliangtang@gmail.com>
Signed-off-by: NMat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -890,6 +890,29 @@ remove_tests()
 	chk_join_nr "flush subflows and signal" 3 3 3
 	chk_add_nr 1 1
 	chk_rm_nr 2 2
+
+	# 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
 }
 
 add_tests()