[PATCH net] selftests: Fix IPv6 address bind tests
From: David Ahern <dsahern@kernel.org>
Date: 2021-12-11 18:26:29
IPv6 allows binding a socket to a device then binding to an address
not on the device (__inet6_bind -> ipv6_chk_addr with strict flag
not set). Update the bind tests to reflect legacy behavior.
Fixes: 34d0302ab861 ("selftests: Add ipv6 address bind tests to fcnal-test")
Reported-by: Li Zhijian <redacted>
Signed-off-by: David Ahern <dsahern@kernel.org>
---
tools/testing/selftests/net/fcnal-test.sh | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/net/fcnal-test.sh b/tools/testing/selftests/net/fcnal-test.sh
index 25bba4557a8e..daa63e087b9f 100755
--- a/tools/testing/selftests/net/fcnal-test.sh
+++ b/tools/testing/selftests/net/fcnal-test.sh@@ -3461,11 +3461,14 @@ ipv6_addr_bind_novrf() run_cmd nettest -6 -s -l ${a} -I ${NSA_DEV} -t1 -b log_test_addr ${a} $? 0 "TCP socket bind to local address after device bind" + # Sadly, the kernel allows binding a socket to a device and then + # binding to an address not on the device. So this test passes + # when it really should not a=${NSA_LO_IP6} log_start - show_hint "Should fail with 'Cannot assign requested address'" + show_hint "Tecnically should fail since address is not on device but kernel allows" run_cmd nettest -6 -s -l ${a} -I ${NSA_DEV} -t1 -b - log_test_addr ${a} $? 1 "TCP socket bind to out of scope local address" + log_test_addr ${a} $? 0 "TCP socket bind to out of scope local address" } ipv6_addr_bind_vrf()
@@ -3514,10 +3517,15 @@ ipv6_addr_bind_vrf() run_cmd nettest -6 -s -l ${a} -I ${NSA_DEV} -t1 -b log_test_addr ${a} $? 0 "TCP socket bind to local address with device bind" + # Sadly, the kernel allows binding a socket to a device and then + # binding to an address not on the device. The only restriction + # is that the address is valid in the L3 domain. So this test + # passes when it really should not a=${VRF_IP6} log_start + show_hint "Tecnically should fail since address is not on device but kernel allows" run_cmd nettest -6 -s -l ${a} -I ${NSA_DEV} -t1 -b - log_test_addr ${a} $? 1 "TCP socket bind to VRF address with device bind" + log_test_addr ${a} $? 0 "TCP socket bind to VRF address with device bind" a=${NSA_LO_IP6} log_start
--
2.25.1