[PATCH] selftests: icmp_redirect: support expected failures

According to a comment in commit 99513cfa16c6 ("selftest: Fixes for
icmp_redirect test") the test "IPv6: mtu exception plus redirect" is
expected to fail, because of a bug in the IPv6 logic that hasn't been
fixed yet apparently.

We should probably consider this failure as an "expected failure",
therefore change the script to return XFAIL for that particular test and
also report the total amount of expected failures at the end of the run.

Signed-off-by: Andrea Righi <redacted>
---
 tools/testing/selftests/net/icmp_redirect.sh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/icmp_redirect.sh b/tools/testing/selftests/net/icmp_redirect.sh
index bf361f30d6ef..c19ecc6a8614 100755
--- a/tools/testing/selftests/net/icmp_redirect.sh
+++ b/tools/testing/selftests/net/icmp_redirect.sh

@@ -63,10 +63,14 @@ log_test()
 	local rc=$1
 	local expected=$2
 	local msg="$3"
+	local xfail=$4
 
 	if [ ${rc} -eq ${expected} ]; then
 		printf "TEST: %-60s  [ OK ]\n" "${msg}"
 		nsuccess=$((nsuccess+1))
+	elif [ ${rc} -eq ${xfail} ]; then
+		printf "TEST: %-60s  [XFAIL]\n" "${msg}"
+		nxfail=$((nxfail+1))
 	else
 		ret=1
 		nfail=$((nfail+1))

@@ -322,7 +326,7 @@ check_exception()
 		ip -netns h1 -6 ro get ${H1_VRF_ARG} ${H2_N2_IP6} | \
 		grep -v "mtu" | grep -q "${R1_LLADDR}"
 	fi
-	log_test $? 0 "IPv6: ${desc}"
+	log_test $? 0 "IPv6: ${desc}" 1
 }
 
 run_ping()

@@ -488,6 +492,7 @@ which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
 ret=0
 nsuccess=0
 nfail=0
+nxfail=0
 
 while getopts :pv o
 do

@@ -532,5 +537,6 @@ fi
 
 printf "\nTests passed: %3d\n" ${nsuccess}
 printf "Tests failed: %3d\n"   ${nfail}
+printf "Tests xfailed: %3d\n"  ${nxfail}
 
 exit $ret

-- 
2.31.1

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Tue, 22 Jun 2021 09:46:48 +0200 you wrote:

According to a comment in commit 99513cfa16c6 ("selftest: Fixes for
icmp_redirect test") the test "IPv6: mtu exception plus redirect" is
expected to fail, because of a bug in the IPv6 logic that hasn't been
fixed yet apparently.

We should probably consider this failure as an "expected failure",
therefore change the script to return XFAIL for that particular test and
also report the total amount of expected failures at the end of the run.

[...]

Here is the summary with links:
  - selftests: icmp_redirect: support expected failures
    https://git.kernel.org/netdev/net-next/c/0a36a75c6818

You are awesome, thank you!
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