tests: add test for dormant on/off/on bug

Disallow enabling/disabling a table in a single transaction.
Make sure we still allow one update, either to dormant, or
from active to dormant.

Reported-by: "Lee, Cherie-Anne" <cherie.lee@starlabs.sg>
Cc: Bing-Jhong Billy Jheng <billy@starlabs.sg>
Cc: info@starlabs.sg
Signed-off-by: Florian Westphal <fw@strlen.de>

2 files changed, 52 insertions, 0 deletions

diff --git a/tests/shell/testcases/transactions/dumps/table_onoff.nft b/tests/shell/testcases/transactions/dumps/table_onoff.nft
new file mode 100644
index 00000000..038be1c0
--- /dev/null
+++ b/tests/shell/testcases/transactions/dumps/table_onoff.nft
@@ -0,0 +1,8 @@
+table ip t {
+	flags dormant
+
+	chain c {
+		type filter hook input priority filter; policy accept;
+		ip daddr 127.0.0.42 counter packets 0 bytes 0
+	}
+}
diff --git a/tests/shell/testcases/transactions/table_onoff b/tests/shell/testcases/transactions/table_onoff
new file mode 100755
index 00000000..831d4614
--- /dev/null
+++ b/tests/shell/testcases/transactions/table_onoff
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+# attempt to re-awaken a table that is flagged dormant within
+# same transaction
+$NFT -f - <<EOF
+add table ip t
+add table ip t { flags dormant; }
+add chain ip t c { type filter hook input priority 0; }
+add table ip t
+delete table ip t
+EOF
+
+if [ $? -eq 0 ]; then
+	exit 1
+fi
+
+set -e
+
+ip link set lo up
+
+# add a dormant table, then wake it up in same
+# transaction.
+$NFT -f - <<EOF
+add table ip t { flags dormant; }
+add chain ip t c { type filter hook input priority 0; }
+add rule ip t c ip daddr 127.0.0.42 counter
+add table ip t
+EOF
+
+# check table is indeed active.
+ping -c 1 127.0.0.42
+$NFT list chain ip t c | grep "counter packets 1"
+$NFT delete table ip t
+
+# allow to flag table dormant.
+$NFT -f - <<EOF
+add table ip t
+add chain ip t c { type filter hook input priority 0; }
+add rule ip t c ip daddr 127.0.0.42 counter
+add table ip t { flags dormant; }
+EOF
+
+ping -c 1 127.0.0.42
+# expect run-tests.sh to complain if counter isn't 0.