[PATCH net-next 4/5] selftests: mptcp: add IPv4-mapped IPv6 testcases
From: Mat Martineau <hidden>
Date: 2021-01-25 19:05:07
Also in:
mptcp
Subsystem:
kernel selftest framework, networking [general], networking [mptcp], the rest · Maintainers:
Shuah Khan, Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Matthieu Baerts, Mat Martineau, Linus Torvalds
From: Geliang Tang <redacted> 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: Matthieu Baerts <redacted> Signed-off-by: Matthieu Baerts <redacted> Signed-off-by: Geliang Tang <redacted> Signed-off-by: Mat Martineau <redacted> --- .../testing/selftests/net/mptcp/mptcp_join.sh | 75 +++++++++++++++++++ 1 file changed, 75 insertions(+)
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index f74cd993b168..be34b9ccbd20 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh@@ -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
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2.30.0