tests: py: add vlan test case for ip/inet family

before fixup, this failed with:

line 4: 'add rule ip test-ip4 input vlan id 1': '[ payload load 2b @ link header + 12 => reg 1 ]' mismatches '[ payload load 2b @ link header + 0 => reg 1 ]'

... because the auto-dependency did not add the preceeding ethernet
header, so vlan was using the wrong offset.

Note than vlan id match in inet input families will only work if header
removal was disabled, i.e.

... add link vethin1 name vethin1.3 type vlan id 3 reorder_hdr off

otherwise, kernel will strip the vlan tag and interface appears as
a normal ethernet interface.

Signed-off-by: Florian Westphal <fw@strlen.de>

5 files changed, 94 insertions, 0 deletions

diff --git a/tests/py/inet/ether.t b/tests/py/inet/ether.t
index c4b1ced7..8625f70b 100644
--- a/tests/py/inet/ether.t
+++ b/tests/py/inet/ether.t
@@ -12,3 +12,9 @@ tcp dport 22 iiftype ether ether saddr 00:0f:54:0c:11:4 accept;ok;tcp dport 22 e
 tcp dport 22 ether saddr 00:0f:54:0c:11:04 accept;ok
 
 ether saddr 00:0f:54:0c:11:04 accept;ok
+
+vlan id 1;ok
+ether type vlan vlan id 2;ok;vlan id 2
+
+# invalid dependency
+ether type ip vlan id 1;fail
diff --git a/tests/py/inet/ether.t.json b/tests/py/inet/ether.t.json
index 84b184c7..c7a7f886 100644
--- a/tests/py/inet/ether.t.json
+++ b/tests/py/inet/ether.t.json
@@ -88,3 +88,35 @@
     }
 ]
 
+# vlan id 1
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "id",
+                    "protocol": "vlan"
+                }
+            },
+            "op": "==",
+            "right": 1
+        }
+    }
+]
+
+# ether type vlan vlan id 2
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "id",
+                    "protocol": "vlan"
+                }
+            },
+            "op": "==",
+            "right": 2
+        }
+    }
+]
+
diff --git a/tests/py/inet/ether.t.payload b/tests/py/inet/ether.t.payload
index 53648413..8b74a781 100644
--- a/tests/py/inet/ether.t.payload
+++ b/tests/py/inet/ether.t.payload
@@ -30,3 +30,23 @@ inet test-inet input
   [ cmp eq reg 1 0x0c540f00 0x00000411 ]
   [ immediate reg 0 accept ]
 
+# vlan id 1
+netdev test-netdev ingress
+  [ meta load iiftype => reg 1 ]
+  [ cmp eq reg 1 0x00000001 ]
+  [ payload load 2b @ link header + 12 => reg 1 ]
+  [ cmp eq reg 1 0x00000081 ]
+  [ payload load 2b @ link header + 14 => reg 1 ]
+  [ bitwise reg 1 = ( reg 1 & 0x0000ff0f ) ^ 0x00000000 ]
+  [ cmp eq reg 1 0x00000100 ]
+
+# ether type vlan vlan id 2
+netdev test-netdev ingress
+  [ meta load iiftype => reg 1 ]
+  [ cmp eq reg 1 0x00000001 ]
+  [ payload load 2b @ link header + 12 => reg 1 ]
+  [ cmp eq reg 1 0x00000081 ]
+  [ payload load 2b @ link header + 14 => reg 1 ]
+  [ bitwise reg 1 = ( reg 1 & 0x0000ff0f ) ^ 0x00000000 ]
+  [ cmp eq reg 1 0x00000200 ]
+
diff --git a/tests/py/inet/ether.t.payload.bridge b/tests/py/inet/ether.t.payload.bridge
index e9208008..0128d5f0 100644
--- a/tests/py/inet/ether.t.payload.bridge
+++ b/tests/py/inet/ether.t.payload.bridge
@@ -26,3 +26,19 @@ bridge test-bridge input
   [ cmp eq reg 1 0x0c540f00 0x00000411 ]
   [ immediate reg 0 accept ]
 
+# vlan id 1
+bridge test-bridge input
+  [ payload load 2b @ link header + 12 => reg 1 ]
+  [ cmp eq reg 1 0x00000081 ]
+  [ payload load 2b @ link header + 14 => reg 1 ]
+  [ bitwise reg 1 = ( reg 1 & 0x0000ff0f ) ^ 0x00000000 ]
+  [ cmp eq reg 1 0x00000100 ]
+
+# ether type vlan vlan id 2
+bridge test-bridge input
+  [ payload load 2b @ link header + 12 => reg 1 ]
+  [ cmp eq reg 1 0x00000081 ]
+  [ payload load 2b @ link header + 14 => reg 1 ]
+  [ bitwise reg 1 = ( reg 1 & 0x0000ff0f ) ^ 0x00000000 ]
+  [ cmp eq reg 1 0x00000200 ]
+
diff --git a/tests/py/inet/ether.t.payload.ip b/tests/py/inet/ether.t.payload.ip
index a604f603..7c91f412 100644
--- a/tests/py/inet/ether.t.payload.ip
+++ b/tests/py/inet/ether.t.payload.ip
@@ -30,3 +30,23 @@ ip test-ip4 input
   [ cmp eq reg 1 0x0c540f00 0x00000411 ]
   [ immediate reg 0 accept ]
 
+# vlan id 1
+ip test-ip4 input
+  [ meta load iiftype => reg 1 ]
+  [ cmp eq reg 1 0x00000001 ]
+  [ payload load 2b @ link header + 12 => reg 1 ]
+  [ cmp eq reg 1 0x00000081 ]
+  [ payload load 2b @ link header + 14 => reg 1 ]
+  [ bitwise reg 1 = ( reg 1 & 0x0000ff0f ) ^ 0x00000000 ]
+  [ cmp eq reg 1 0x00000100 ]
+
+# ether type vlan vlan id 2
+ip test-ip4 input
+  [ meta load iiftype => reg 1 ]
+  [ cmp eq reg 1 0x00000001 ]
+  [ payload load 2b @ link header + 12 => reg 1 ]
+  [ cmp eq reg 1 0x00000081 ]
+  [ payload load 2b @ link header + 14 => reg 1 ]
+  [ bitwise reg 1 = ( reg 1 & 0x0000ff0f ) ^ 0x00000000 ]
+  [ cmp eq reg 1 0x00000200 ]
+