Merge branch 'mptcp-misc-updates-for-tests-lock-annotation'

Mat Martineau says:

====================
mptcp: Misc. updates for tests & lock annotation

Here are two fixes we've collected in the mptcp tree.

Patch 1 refactors a MPTCP selftest script to allow running a subset of
the tests.

Patch 2 adds some locking & might_sleep assertations.
====================

Link: https://lore.kernel.org/r/20210204232330.202441-1-mathew.j.martineau@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

5 files changed, 614 insertions, 478 deletions

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 3a22e73220b9..1a25003fd8e3 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -20,6 +20,8 @@ int mptcp_pm_announce_addr(struct mptcp_sock *msk,
 
 	pr_debug("msk=%p, local_id=%d", msk, addr->id);
 
+	lockdep_assert_held(&msk->pm.lock);
+
 	if (add_addr) {
 		pr_warn("addr_signal error, add_addr=%d", add_addr);
 		return -EINVAL;
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index e7b1abb4f0c2..23780a13b934 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -145,6 +145,8 @@ select_local_address(const struct pm_nl_pernet *pernet,
 	struct mptcp_pm_addr_entry *entry, *ret = NULL;
 	struct sock *sk = (struct sock *)msk;
 
+	msk_owned_by_me(msk);
+
 	rcu_read_lock();
 	__mptcp_flush_join_list(msk);
 	list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {
@@ -246,6 +248,8 @@ lookup_anno_list_by_saddr(struct mptcp_sock *msk,
 {
 	struct mptcp_pm_add_entry *entry;
 
+	lockdep_assert_held(&msk->pm.lock);
+
 	list_for_each_entry(entry, &msk->pm.anno_list, list) {
 		if (addresses_equal(&entry->addr, addr, true))
 			return entry;
@@ -342,6 +346,8 @@ static bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk,
 	struct sock *sk = (struct sock *)msk;
 	struct net *net = sock_net(sk);
 
+	lockdep_assert_held(&msk->pm.lock);
+
 	if (lookup_anno_list_by_saddr(msk, &entry->addr))
 		return false;
 
@@ -496,6 +502,9 @@ void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk)
 {
 	struct mptcp_subflow_context *subflow;
 
+	msk_owned_by_me(msk);
+	lockdep_assert_held(&msk->pm.lock);
+
 	if (!mptcp_pm_should_add_signal(msk))
 		return;
 
@@ -566,6 +575,8 @@ void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk)
 
 	pr_debug("address rm_id %d", msk->pm.rm_id);
 
+	msk_owned_by_me(msk);
+
 	if (!msk->pm.rm_id)
 		return;
 
@@ -601,6 +612,8 @@ void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, u8 rm_id)
 
 	pr_debug("subflow rm_id %d", rm_id);
 
+	msk_owned_by_me(msk);
+
 	if (!rm_id)
 		return;
 
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 1405e146dd7c..b9f16a1535d2 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -2187,6 +2187,8 @@ static void __mptcp_close_subflow(struct mptcp_sock *msk)
 {
 	struct mptcp_subflow_context *subflow, *tmp;
 
+	might_sleep();
+
 	list_for_each_entry_safe(subflow, tmp, &msk->conn_list, node) {
 		struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
 
@@ -2529,6 +2531,8 @@ static void __mptcp_destroy_sock(struct sock *sk)
 
 	pr_debug("msk=%p", msk);
 
+	might_sleep();
+
 	/* dispose the ancillatory tcp socket, if any */
 	if (msk->subflow) {
 		iput(SOCK_INODE(msk->subflow));
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 1cc7948a1826..73a923d02aad 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -288,6 +288,11 @@ struct mptcp_sock {
 #define mptcp_for_each_subflow(__msk, __subflow)			\
 	list_for_each_entry(__subflow, &((__msk)->conn_list), node)
 
+static inline void msk_owned_by_me(const struct mptcp_sock *msk)
+{
+	sock_owned_by_me((const struct sock *)msk);
+}
+
 static inline struct mptcp_sock *mptcp_sk(const struct sock *sk)
 {
 	return (struct mptcp_sock *)sk;
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index b8fd924033b1..964db9ed544f 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -680,6 +680,551 @@ chk_prio_nr()
 	fi
 }
 
+subflows_tests()
+{
+	reset
+	run_tests $ns1 $ns2 10.0.1.1
+	chk_join_nr "no JOIN" "0" "0" "0"
+
+	# subflow limited by client
+	reset
+	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
+	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
+
+	# multiple subflows limited by serverf
+	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
+}
+
+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
+}
+
+link_failure_tests()
+{
+	# accept and use add_addr with additional subflows and link loss
+	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 1
+	chk_join_nr "multiple flows, signal, link failure" 3 3 3
+	chk_add_nr 1 1
+}
+
+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
+}
+
+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
+	chk_rm_nr 0 0
+
+	# 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
+
+	# 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
+}
+
+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
+	ip netns exec $ns2 ./pm_nl_ctl add dead:beef:3::2 flags subflow
+	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
+	chk_rm_nr 0 0
+
+	# 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
+	ip netns exec $ns2 ./pm_nl_ctl add dead:beef:3::2 flags subflow
+	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
+	chk_rm_nr 0 0
+
+	# 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
+	run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
+	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
+	chk_join_nr "subflows limited by server w cookies" 2 2 1
+
+	# 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 $ns2 10.0.1.1
+	chk_join_nr "subflows and signal w. cookies" 3 3 3
+	chk_add_nr 1 1
+}
+
+all_tests()
+{
+	subflows_tests
+	signal_address_tests
+	link_failure_tests
+	add_addr_timeout_tests
+	remove_tests
+	add_tests
+	ipv6_tests
+	v4mapped_tests
+	backup_tests
+	add_addr_ports_tests
+	syncookies_tests
+}
+
+usage()
+{
+	echo "mptcp_join usage:"
+	echo "  -f subflows_tests"
+	echo "  -s signal_address_tests"
+	echo "  -l link_failure_tests"
+	echo "  -t add_addr_timeout_tests"
+	echo "  -r remove_tests"
+	echo "  -a add_tests"
+	echo "  -6 ipv6_tests"
+	echo "  -4 v4mapped_tests"
+	echo "  -b backup_tests"
+	echo "  -p add_addr_ports_tests"
+	echo "  -c syncookies_tests"
+	echo "  -h help"
+}
+
 sin=$(mktemp)
 sout=$(mktemp)
 cin=$(mktemp)
@@ -690,483 +1235,50 @@ make_file "$cin" "client" 1
 make_file "$sin" "server" 1
 trap cleanup EXIT
 
-run_tests $ns1 $ns2 10.0.1.1
-chk_join_nr "no JOIN" "0" "0" "0"
-
-# subflow limted by client
-reset
-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 limted by server
-reset
-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
-
-# multiple subflows limited by serverf
-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
-
-# 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
-
-# accept and use add_addr with additional subflows and link loss
-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 1
-chk_join_nr "multiple flows, signal, link failure" 3 3 3
-chk_add_nr 1 1
-
-# 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
-
-# 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
-chk_rm_nr 0 0
-
-# 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
-
-# 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
-
-# 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
-
-# subflow IPv6
-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:3::2 flags subflow
-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
-
-# 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
-
-# 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
-chk_rm_nr 0 0
-
-# 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
-ip netns exec $ns2 ./pm_nl_ctl add dead:beef:3::2 flags subflow
-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
-
-# 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
-
-# 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
-
-# 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
-chk_rm_nr 0 0
-
-# 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
-run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
-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
-
-# 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
-chk_join_nr "subflows limited by server w cookies" 2 2 1
-
-# 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
+if [ -z $1 ]; then
+	all_tests
+	exit $ret
+fi
+
+while getopts 'fsltra64bpch' opt; do
+	case $opt in
+		f)
+			subflows_tests
+			;;
+		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
+			;;
+		c)
+			syncookies_tests
+			;;
+		h | *)
+			usage
+			;;
+	esac
+done
 
 exit $ret