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Date:   Thu, 13 Aug 2020 12:44:22 +0800
From:   Po-Hsu Lin <po-hsu.lin@...onical.com>
To:     davem@...emloft.net, kuba@...nel.org, skhan@...uxfoundation.org
Cc:     po-hsu.lin@...onical.com, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH] selftests: rtnetlink: load fou module for kci_test_encap_fou()

The kci_test_encap_fou() test from kci_test_encap() in rtnetlink.sh
needs the fou module to work. Otherwise it will fail with:

  $ ip netns exec "$testns" ip fou add port 7777 ipproto 47
  RTNETLINK answers: No such file or directory
  Error talking to the kernel

Add the CONFIG_NET_FOU into the config file as well.

Signed-off-by: Po-Hsu Lin <po-hsu.lin@...onical.com>
---
 tools/testing/selftests/net/config       | 1 +
 tools/testing/selftests/net/rtnetlink.sh | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config
index 3b42c06b..96d2763 100644
--- a/tools/testing/selftests/net/config
+++ b/tools/testing/selftests/net/config
@@ -31,3 +31,4 @@ CONFIG_NET_SCH_ETF=m
 CONFIG_NET_SCH_NETEM=y
 CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_KALLSYMS=y
+CONFIG_NET_FOU
diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh
index bdbf4b3..7931b65 100755
--- a/tools/testing/selftests/net/rtnetlink.sh
+++ b/tools/testing/selftests/net/rtnetlink.sh
@@ -521,6 +521,11 @@ kci_test_encap_fou()
 		return $ksft_skip
 	fi
 
+	if ! /sbin/modprobe -q -n fou; then
+		echo "SKIP: module fou is not found"
+		return $ksft_skip
+	fi
+	/sbin/modprobe -q fou
 	ip -netns "$testns" fou add port 7777 ipproto 47 2>/dev/null
 	if [ $? -ne 0 ];then
 		echo "FAIL: can't add fou port 7777, skipping test"
@@ -541,6 +546,7 @@ kci_test_encap_fou()
 		return 1
 	fi
 
+	/sbin/modprobe -q -r fou
 	echo "PASS: fou"
 }
 
-- 
2.7.4

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