[PATCHv2] selftests: icmp_redirect: pass xfail=0 to log_test()

If any sub-test in this icmp_redirect.sh is failing but not expected
to fail. The script will complain:
    ./icmp_redirect.sh: line 72: [: 1: unary operator expected

This is because when the sub-test is not expected to fail, we won't
pass any value for the xfail local variable in log_test() and thus
it's empty. Fix this by passing 0 as the 4th variable to log_test()
for non-xfail cases.

v2: added fixes tag

Fixes: 0a36a75c6818 ("selftests: icmp_redirect: support expected failures")
Signed-off-by: Po-Hsu Lin <redacted>
---
 tools/testing/selftests/net/icmp_redirect.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/icmp_redirect.sh b/tools/testing/selftests/net/icmp_redirect.sh
index ecbf57f..7b9d6e3 100755
--- a/tools/testing/selftests/net/icmp_redirect.sh
+++ b/tools/testing/selftests/net/icmp_redirect.sh

@@ -311,7 +311,7 @@ check_exception()
 		ip -netns h1 ro get ${H1_VRF_ARG} ${H2_N2_IP} | \
 		grep -E -v 'mtu|redirected' | grep -q "cache"
 	fi
-	log_test $? 0 "IPv4: ${desc}"
+	log_test $? 0 "IPv4: ${desc}" 0
 
 	# No PMTU info for test "redirect" and "mtu exception plus redirect"
 	if [ "$with_redirect" = "yes" ] && [ "$desc" != "redirect exception plus mtu" ]; then

-- 
2.7.4

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller [off-list ref]:

On Fri, 10 Dec 2021 15:25:23 +0800 you wrote:

If any sub-test in this icmp_redirect.sh is failing but not expected
to fail. The script will complain:
    ./icmp_redirect.sh: line 72: [: 1: unary operator expected

This is because when the sub-test is not expected to fail, we won't
pass any value for the xfail local variable in log_test() and thus
it's empty. Fix this by passing 0 as the 4th variable to log_test()
for non-xfail cases.

[...]

Here is the summary with links:
  - [PATCHv2] selftests: icmp_redirect: pass xfail=0 to log_test()
    https://git.kernel.org/netdev/net/c/3748939bce3f

You are awesome, thank you!
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