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Message-ID: <e0028438c01f733c6d1913db397c0df8f274f537.1700676682.git.dxu@dxuuu.xyz>
Date: Wed, 22 Nov 2023 11:20:25 -0700
From: Daniel Xu <dxu@...uu.xyz>
To: shuah@...nel.org,
	daniel@...earbox.net,
	andrii@...nel.org,
	ast@...nel.org,
	steffen.klassert@...unet.com,
	antony.antony@...unet.com,
	alexei.starovoitov@...il.com
Cc: martin.lau@...ux.dev,
	song@...nel.org,
	yonghong.song@...ux.dev,
	john.fastabend@...il.com,
	kpsingh@...nel.org,
	sdf@...gle.com,
	haoluo@...gle.com,
	jolsa@...nel.org,
	mykolal@...com,
	bpf@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	devel@...ux-ipsec.org,
	netdev@...r.kernel.org
Subject: [PATCH ipsec-next v1 4/7] bpf: selftests: test_tunnel: Mount bpffs if necessary

Previously, if bpffs was not already mounted, then the test suite would
fail during object file pinning steps. Fix by mounting bpffs if
necessary.

Co-developed-by: Antony Antony <antony.antony@...unet.com>
Signed-off-by: Antony Antony <antony.antony@...unet.com>
Signed-off-by: Daniel Xu <dxu@...uu.xyz>
---
 tools/testing/selftests/bpf/test_tunnel.sh | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_tunnel.sh b/tools/testing/selftests/bpf/test_tunnel.sh
index 85ba39992461..dd3c79129e87 100755
--- a/tools/testing/selftests/bpf/test_tunnel.sh
+++ b/tools/testing/selftests/bpf/test_tunnel.sh
@@ -46,7 +46,8 @@
 # 6) Forward the packet to the overlay tnl dev
 
 BPF_FILE="test_tunnel_kern.bpf.o"
-BPF_PIN_TUNNEL_DIR="/sys/fs/bpf/tc/tunnel"
+BPF_FS="/sys/fs/bpf"
+BPF_PIN_TUNNEL_DIR="${BPF_FS}/tc/tunnel"
 PING_ARG="-c 3 -w 10 -q"
 ret=0
 GREEN='\033[0;92m'
@@ -668,10 +669,20 @@ check_err()
 	fi
 }
 
+mount_bpffs()
+{
+	if ! mount | grep "bpf on /sys/fs/bpf" &>/dev/null; then
+		mount -t bpf bpf "$BPF_FS"
+	fi
+}
+
 bpf_tunnel_test()
 {
 	local errors=0
 
+	echo "Mounting bpffs..."
+	mount_bpffs
+
 	echo "Testing GRE tunnel..."
 	test_gre
 	errors=$(( $errors + $? ))
-- 
2.42.1


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