tests: shell: skip if kernel does not support flowtable counter

Check if kernel provides flowtable counter supports which is available
since 53c2b2899af7 ("netfilter: flowtable: add counter support").

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

2 files changed, 18 insertions, 0 deletions

diff --git a/tests/shell/features/flowtable_counter.sh b/tests/shell/features/flowtable_counter.sh
new file mode 100755
index 00000000..a4c4c621
--- /dev/null
+++ b/tests/shell/features/flowtable_counter.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# 53c2b2899af7 ("netfilter: flowtable: add counter support")
+# v5.7-rc1~146^2~12^2~16
+
+EXPECTED="table ip filter2 {
+	flowtable main_ft2 {
+		hook ingress priority filter
+		devices = { lo }
+		counter
+	}
+}"
+
+$NFT -f - <<< $EXPECTED
+
+diff -u <($NFT list ruleset) - <<<"$EXPECTED"
diff --git a/tests/shell/testcases/flowtable/0012flowtable_variable_0 b/tests/shell/testcases/flowtable/0012flowtable_variable_0
index 080059d2..9c03820f 100755
--- a/tests/shell/testcases/flowtable/0012flowtable_variable_0
+++ b/tests/shell/testcases/flowtable/0012flowtable_variable_0
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# NFT_TEST_REQUIRES(NFT_TEST_HAVE_flowtable_counter)
+
 set -e
 
 iface_cleanup() {