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[RFC,bpf-next,3/6] bpf: selftests: test_tunnel: Mount bpffs if necessary

Message ID f72e76f4fcfb6498562ce859b6d2e6f15e2bd435.1698431765.git.dxu@dxuuu.xyz
State Superseded
Headers show
Series Add bpf_xdp_get_xfrm_state() kfunc | expand

Commit Message

Daniel Xu Oct. 27, 2023, 6:46 p.m. UTC 
Previously, if bpffs was not already mounted, then the test suite would
fail during object file pinning steps. Fix by mounting bpffs if
necessary.

Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
---
 tools/testing/selftests/bpf/test_tunnel.sh | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
diff mbox series

Patch

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 + $? ))