testing/test_runner: Always mount new bpffs

Since we run in a separate mount namespace, we should always mount a new bpffs during setup. This way, we are sure the bpffs instance will be removed once we exit the test run, which ensures that no pinned programs are left at the end of the test. Signed-off-by: Toke Høiland-Jørgensen <[email protected]>
xdp-project · Aug 5, 2024 · 5c7239b · 5c7239b
1 parent 3492ea4
commit 5c7239b
Showing 1 changed file with 2 additions and 4 deletions.
diff --git a/lib/testing/test_runner.sh b/lib/testing/test_runner.sh
@@ -242,6 +242,8 @@ check_prereq()
     if [ "$max_locked_mem" != "unlimited" ]; then
 	ulimit -l unlimited || die "Unable to set ulimit"
     fi
+
+    mount -t bpf bpf /sys/fs/bpf/ || die "Unable to mount bpffs"
 }
 
 gen_nsname()
@@ -294,10 +296,6 @@ init_ns()
     OUTSIDE_IP6="${IP6_PREFIX}1"
     OUTSIDE_IP4="${IP4_PREFIX}1"
 
-    if ! mount | grep -q /sys/fs/bpf; then
-        mount -t bpf bpf /sys/fs/bpf/
-    fi
-
     ip netns add "$nsname"
     ip link add dev "$nsname" type veth peer name "$peername"
     set_sysctls $nsname