Commit a6094788 authored by Geliang Tang's avatar Geliang Tang Committed by Jakub Kicinski
Browse files

selftests: mptcp: add IPv4-mapped IPv6 testcases 



Here, we make sure we support IPv4-mapped in IPv6 addresses in different
contexts:

- a v4-mapped address is received by the PM and can be used as v4.
- a v4 address is received by the PM and can be used even with a v4
  mapped socket.

We also make sure we don't try to establish subflows between v4 and v6
addresses, e.g. if a real v6 address ends with a valid v4 address.

Co-developed-by: default avatarMatthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: default avatarMatthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: default avatarGeliang Tang <geliangtang@gmail.com>
Signed-off-by: default avatarMat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 1f2f1931

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

+75 −0
Original line number Diff line number Diff line
@@ -790,6 +790,81 @@ 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