From 5f6480a1361c444fa05087c1da1c463d408ef1c2 Mon Sep 17 00:00:00 2001
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue, 27 Jul 2021 23:18:16 +0200
Subject: tests: py: tcp flags & (fin | syn | rst | ack) == syn

Add a test case to cover translation to tcp flags syn / fin,syn,rst,ack.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 tests/py/inet/tcp.t         |  1 +
 tests/py/inet/tcp.t.json    | 27 +++++++++++++++++++++++++++
 tests/py/inet/tcp.t.payload |  8 ++++++++
 3 files changed, 36 insertions(+)

(limited to 'tests')

diff --git a/tests/py/inet/tcp.t b/tests/py/inet/tcp.t
index 17e0d9b6..dece9eaa 100644
--- a/tests/py/inet/tcp.t
+++ b/tests/py/inet/tcp.t
@@ -73,6 +73,7 @@ tcp flags & syn != 0;ok;tcp flags syn
 # it should be possible to transform this to: tcp flags syn
 tcp flags & syn == syn;ok
 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 | 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
 tcp flags { syn, syn | ack };ok
diff --git a/tests/py/inet/tcp.t.json b/tests/py/inet/tcp.t.json
index c1e4fb35..23244eaa 100644
--- a/tests/py/inet/tcp.t.json
+++ b/tests/py/inet/tcp.t.json
@@ -1584,6 +1584,33 @@
     }
 ]
 
+# tcp flags & (fin | syn | rst | ack) == syn
+[
+    {
+        "match": {
+            "left": {
+                "&": [
+                    {
+                        "payload": {
+                            "field": "flags",
+                            "protocol": "tcp"
+                        }
+                    },
+                    [
+                        "fin",
+                        "syn",
+                        "rst",
+                        "ack"
+                    ]
+                ]
+            },
+            "op": "==",
+            "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 77b30188..4e795aa9 100644
--- a/tests/py/inet/tcp.t.payload
+++ b/tests/py/inet/tcp.t.payload
@@ -394,6 +394,14 @@ inet test-inet input
   [ bitwise reg 1 = ( reg 1 & 0x00000017 ) ^ 0x00000000 ]
   [ cmp eq reg 1 0x00000002 ]
 
+# tcp flags & (fin | syn | rst | ack) == syn
+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 & 0x00000017 ) ^ 0x00000000 ]
+  [ cmp eq reg 1 0x00000002 ]
+
 # tcp flags & (fin | syn | rst | ack) != syn
 inet test-inet input
   [ meta load l4proto => reg 1 ]
-- 
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