tests: py: idempotent tcp flags & syn != 0 to tcp flag syn

Add a test to cover this case.

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

3 files changed, 25 insertions, 0 deletions

diff --git a/tests/py/inet/tcp.t b/tests/py/inet/tcp.t
index 13b84215..5e2830b6 100644
--- a/tests/py/inet/tcp.t
+++ b/tests/py/inet/tcp.t
@@ -69,6 +69,7 @@ tcp flags != cwr;ok
 tcp flags == syn;ok
 tcp flags fin,syn / fin,syn;ok
 tcp flags != syn / fin,syn;ok
+tcp flags & syn != 0;ok;tcp flags syn
 tcp flags & (fin | syn | rst | ack) syn;ok;tcp flags syn / fin,syn,rst,ack
 tcp flags & (fin | syn | rst | ack) != syn;ok;tcp flags != syn / fin,syn,rst,ack
 tcp flags & (fin | syn | rst | psh | ack | urg | ecn | cwr) == fin | syn | rst | psh | ack | urg | ecn | cwr;ok;tcp flags == 0xff
diff --git a/tests/py/inet/tcp.t.json b/tests/py/inet/tcp.t.json
index 033a4f22..6155c81f 100644
--- a/tests/py/inet/tcp.t.json
+++ b/tests/py/inet/tcp.t.json
@@ -1521,6 +1521,22 @@
     }
 ]
 
+# tcp flags & syn != 0
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "flags",
+                    "protocol": "tcp"
+                }
+            },
+            "op": "in",
+            "right": "syn"
+        }
+    }
+]
+
 # tcp flags & (fin | syn | rst | ack) syn
 [
     {
diff --git a/tests/py/inet/tcp.t.payload b/tests/py/inet/tcp.t.payload
index eaa7cd09..6b8b4ecd 100644
--- a/tests/py/inet/tcp.t.payload
+++ b/tests/py/inet/tcp.t.payload
@@ -370,6 +370,14 @@ inet test-inet input
   [ bitwise reg 1 = ( reg 1 & 0x00000003 ) ^ 0x00000000 ]
   [ cmp neq reg 1 0x00000002 ]
 
+# tcp flags & syn != 0
+inet test-inet input
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000006 ]
+  [ payload load 1b @ transport header + 13 => reg 1 ]
+  [ bitwise reg 1 = ( reg 1 & 0x00000002 ) ^ 0x00000000 ]
+  [ cmp neq reg 1 0x00000000 ]
+
 # tcp flags & (fin | syn | rst | ack) syn
 inet test-inet input
   [ meta load l4proto => reg 1 ]