[PATCH net] selftests: Add duplicate config only for MD5 VRF tests

[PATCH net] selftests: Add duplicate config only for MD5 VRF tests

[David Ahern]

Commit referenced below added configuration in the default VRF that
duplicates a VRF to check MD5 passwords are properly used and fail
when expected. That config should not be added all the time as it
can cause tests to pass that should not (by matching on default VRF
setup when it should not). Move the duplicate setup to a function
that is only called for the MD5 tests and add a cleanup function
to remove it after the MD5 tests.

Fixes: 5cad8bce26e0 ("fcnal-test: Add TCP MD5 tests for VRF")
Signed-off-by: David Ahern <dsahern@kernel.org>
---
 tools/testing/selftests/net/fcnal-test.sh | 26 +++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/net/fcnal-test.sh b/tools/testing/selftests/net/fcnal-test.sh
index 32d5f7bc588e..d0c45023b4d4 100755
--- a/tools/testing/selftests/net/fcnal-test.sh
+++ b/tools/testing/selftests/net/fcnal-test.sh
@@ -462,6 +462,22 @@ cleanup()
 	ip netns del ${NSC} >/dev/null 2>&1
 }
 
+cleanup_vrf_dup()
+{
+	ip link del ${NSA_DEV2} >/dev/null 2>&1
+	ip netns pids ${NSC} | xargs kill 2>/dev/null
+	ip netns del ${NSC} >/dev/null 2>&1
+}
+
+setup_vrf_dup()
+{
+	# some VRF tests use ns-C which has the same config as
+	# ns-B but for a device NOT in the VRF
+	create_ns ${NSC} "-" "-"
+	connect_ns ${NSA} ${NSA_DEV2} ${NSA_IP}/24 ${NSA_IP6}/64 \
+		   ${NSC} ${NSC_DEV} ${NSB_IP}/24 ${NSB_IP6}/64
+}
+
 setup()
 {
 	local with_vrf=${1}
@@ -491,12 +507,6 @@ setup()
 
 		ip -netns ${NSB} ro add ${VRF_IP}/32 via ${NSA_IP} dev ${NSB_DEV}
 		ip -netns ${NSB} -6 ro add ${VRF_IP6}/128 via ${NSA_IP6} dev ${NSB_DEV}
-
-		# some VRF tests use ns-C which has the same config as
-		# ns-B but for a device NOT in the VRF
-		create_ns ${NSC} "-" "-"
-		connect_ns ${NSA} ${NSA_DEV2} ${NSA_IP}/24 ${NSA_IP6}/64 \
-			   ${NSC} ${NSC_DEV} ${NSB_IP}/24 ${NSB_IP6}/64
 	else
 		ip -netns ${NSA} ro add ${NSB_LO_IP}/32 via ${NSB_IP} dev ${NSA_DEV}
 		ip -netns ${NSA} ro add ${NSB_LO_IP6}/128 via ${NSB_IP6} dev ${NSA_DEV}
@@ -1247,7 +1257,9 @@ ipv4_tcp_vrf()
 	log_test_addr ${a} $? 1 "Global server, local connection"
 
 	# run MD5 tests
+	setup_vrf_dup
 	ipv4_tcp_md5
+	cleanup_vrf_dup
 
 	#
 	# enable VRF global server
@@ -2743,7 +2755,9 @@ ipv6_tcp_vrf()
 	log_test_addr ${a} $? 1 "Global server, local connection"
 
 	# run MD5 tests
+	setup_vrf_dup
 	ipv6_tcp_md5
+	cleanup_vrf_dup
 
 	#
 	# enable VRF global server
-- 
2.25.1

Re: [PATCH net] selftests: Add duplicate config only for MD5 VRF tests

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@davemloft.net>:

On Sat, 11 Dec 2021 10:11:30 -0700 you wrote:
> Commit referenced below added configuration in the default VRF that
> duplicates a VRF to check MD5 passwords are properly used and fail
> when expected. That config should not be added all the time as it
> can cause tests to pass that should not (by matching on default VRF
> setup when it should not). Move the duplicate setup to a function
> that is only called for the MD5 tests and add a cleanup function
> to remove it after the MD5 tests.
> 
> [...]

Here is the summary with links:
  - [net] selftests: Add duplicate config only for MD5 VRF tests
    https://git.kernel.org/netdev/net/c/7e0147592b5c

You are awesome, thank you!
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