SDFAB-193 Fix routing of GTP End Marker packet-outs on fabric-v1model

This change introduces three fixes:

1) We have observed an issue with p4lang/PI and BMv2 where in presence of
multiple metadata fields, the PI implementation for BMv2 provides an
erroneous serialization of the packet-out header, hence affecting the
parsing/forwarding behavior. As a workaround, since we cannot control
the order of fields in the p4runtime.PacketOut message, we modify the
interpreter to only add one field, egress_port or do_forwarding. Both
fields are treated as mutually exclusive by the P4 pipeline, so the
operation is safe. This is against the P4Runtime spec (all fields should
be provided), but supported by BMv2 (unset fields are initialized to
zero).

2) CPU port was not initialized when calling Pipeliner.init()

3) GTP End Marker were being parsed as GTP-U packets with inner IPv4,
causing a parser error (packet too short).

Change-Id: I406870b4a9aa044b5d0b35a56b0bfde4e601a4f6
(cherry picked from commit ffa7fed9eb3b30221cbc5e23b58c9ac322f8b7f9)
diff --git a/pipelines/fabric/impl/src/main/resources/p4c-out/fabric-full/bmv2/default/bmv2.json b/pipelines/fabric/impl/src/main/resources/p4c-out/fabric-full/bmv2/default/bmv2.json
index 1c1b0fe..62424cc 100644
--- a/pipelines/fabric/impl/src/main/resources/p4c-out/fabric-full/bmv2/default/bmv2.json
+++ b/pipelines/fabric/impl/src/main/resources/p4c-out/fabric-full/bmv2/default/bmv2.json
@@ -5,14 +5,17 @@
       "id" : 0,
       "fields" : [
         ["tmp_0", 1, false],
-        ["tmp_2", 32, false],
+        ["tmp_2", 3, false],
+        ["tmp_4", 8, false],
+        ["tmp_8", 32, false],
         ["last_ipv4_dscp_0", 6, false],
         ["tmp_1", 16, false],
         ["tmp_3", 16, false],
         ["tmp_5", 4, false],
         ["tmp_6", 16, false],
-        ["tmp_4", 32, false],
-        ["tmp_7", 32, false],
+        ["tmp_7", 64, false],
+        ["tmp_9", 32, false],
+        ["tmp_10", 32, false],
         ["bng_ingress_upstream_hasReturned", 1, false],
         ["key_0", 64, false],
         ["process_int_main_process_int_transit_hasReturned", 1, false],
@@ -66,7 +69,7 @@
         ["userMetadata._int_meta_new_bytes47", 16, false],
         ["userMetadata._int_meta_ig_tstamp48", 32, false],
         ["userMetadata._int_meta_eg_tstamp49", 32, false],
-        ["_padding_0", 5, false]
+        ["_padding_0", 2, false]
       ]
     },
     {
@@ -79,9 +82,24 @@
       ]
     },
     {
-      "name" : "standard_metadata",
+      "name" : "gtpu_t",
       "id" : 2,
       "fields" : [
+        ["version", 3, false],
+        ["pt", 1, false],
+        ["spare", 1, false],
+        ["ex_flag", 1, false],
+        ["seq_flag", 1, false],
+        ["npdu_flag", 1, false],
+        ["msgtype", 8, false],
+        ["msglen", 16, false],
+        ["teid", 32, false]
+      ]
+    },
+    {
+      "name" : "standard_metadata",
+      "id" : 3,
+      "fields" : [
         ["ingress_port", 9, false],
         ["egress_spec", 9, false],
         ["egress_port", 9, false],
@@ -103,7 +121,7 @@
     },
     {
       "name" : "ethernet_t",
-      "id" : 3,
+      "id" : 4,
       "fields" : [
         ["dst_addr", 48, false],
         ["src_addr", 48, false]
@@ -111,7 +129,7 @@
     },
     {
       "name" : "vlan_tag_t",
-      "id" : 4,
+      "id" : 5,
       "fields" : [
         ["eth_type", 16, false],
         ["pri", 3, false],
@@ -121,14 +139,14 @@
     },
     {
       "name" : "eth_type_t",
-      "id" : 5,
+      "id" : 6,
       "fields" : [
         ["value", 16, false]
       ]
     },
     {
       "name" : "pppoe_t",
-      "id" : 6,
+      "id" : 7,
       "fields" : [
         ["version", 4, false],
         ["type_id", 4, false],
@@ -140,7 +158,7 @@
     },
     {
       "name" : "mpls_t",
-      "id" : 7,
+      "id" : 8,
       "fields" : [
         ["label", 20, false],
         ["tc", 3, false],
@@ -150,7 +168,7 @@
     },
     {
       "name" : "ipv4_t",
-      "id" : 8,
+      "id" : 9,
       "fields" : [
         ["version", 4, false],
         ["ihl", 4, false],
@@ -169,7 +187,7 @@
     },
     {
       "name" : "udp_t",
-      "id" : 9,
+      "id" : 10,
       "fields" : [
         ["sport", 16, false],
         ["dport", 16, false],
@@ -178,21 +196,6 @@
       ]
     },
     {
-      "name" : "gtpu_t",
-      "id" : 10,
-      "fields" : [
-        ["version", 3, false],
-        ["pt", 1, false],
-        ["spare", 1, false],
-        ["ex_flag", 1, false],
-        ["seq_flag", 1, false],
-        ["npdu_flag", 1, false],
-        ["msgtype", 8, false],
-        ["msglen", 16, false],
-        ["teid", 32, false]
-      ]
-    },
-    {
       "name" : "tcp_t",
       "id" : 11,
       "fields" : [
@@ -374,281 +377,288 @@
       "pi_omit" : true
     },
     {
-      "name" : "scalars",
+      "name" : "gtpu_0",
       "id" : 1,
+      "header_type" : "gtpu_t",
+      "metadata" : false,
+      "pi_omit" : true
+    },
+    {
+      "name" : "scalars",
+      "id" : 2,
       "header_type" : "scalars_0",
       "metadata" : true,
       "pi_omit" : true
     },
     {
       "name" : "standard_metadata",
-      "id" : 2,
+      "id" : 3,
       "header_type" : "standard_metadata",
       "metadata" : true,
       "pi_omit" : true
     },
     {
       "name" : "ethernet",
-      "id" : 3,
+      "id" : 4,
       "header_type" : "ethernet_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "vlan_tag",
-      "id" : 4,
-      "header_type" : "vlan_tag_t",
-      "metadata" : false,
-      "pi_omit" : true
-    },
-    {
-      "name" : "inner_vlan_tag",
       "id" : 5,
       "header_type" : "vlan_tag_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
-      "name" : "eth_type",
+      "name" : "inner_vlan_tag",
       "id" : 6,
+      "header_type" : "vlan_tag_t",
+      "metadata" : false,
+      "pi_omit" : true
+    },
+    {
+      "name" : "eth_type",
+      "id" : 7,
       "header_type" : "eth_type_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "pppoe",
-      "id" : 7,
+      "id" : 8,
       "header_type" : "pppoe_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "mpls",
-      "id" : 8,
+      "id" : 9,
       "header_type" : "mpls_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "gtpu_ipv4",
-      "id" : 9,
+      "id" : 10,
       "header_type" : "ipv4_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "gtpu_udp",
-      "id" : 10,
+      "id" : 11,
       "header_type" : "udp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "outer_gtpu",
-      "id" : 11,
-      "header_type" : "gtpu_t",
-      "metadata" : false,
-      "pi_omit" : true
-    },
-    {
-      "name" : "gtpu",
       "id" : 12,
       "header_type" : "gtpu_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
-      "name" : "inner_ipv4",
+      "name" : "gtpu",
       "id" : 13,
+      "header_type" : "gtpu_t",
+      "metadata" : false,
+      "pi_omit" : true
+    },
+    {
+      "name" : "inner_ipv4",
+      "id" : 14,
       "header_type" : "ipv4_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "inner_udp",
-      "id" : 14,
+      "id" : 15,
       "header_type" : "udp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "inner_tcp",
-      "id" : 15,
+      "id" : 16,
       "header_type" : "tcp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "inner_icmp",
-      "id" : 16,
+      "id" : 17,
       "header_type" : "icmp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "ipv4",
-      "id" : 17,
+      "id" : 18,
       "header_type" : "ipv4_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "ipv6",
-      "id" : 18,
+      "id" : 19,
       "header_type" : "ipv6_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "tcp",
-      "id" : 19,
+      "id" : 20,
       "header_type" : "tcp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "udp",
-      "id" : 20,
+      "id" : 21,
       "header_type" : "udp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "icmp",
-      "id" : 21,
+      "id" : 22,
       "header_type" : "icmp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "packet_out",
-      "id" : 22,
+      "id" : 23,
       "header_type" : "packet_out_header_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "packet_in",
-      "id" : 23,
+      "id" : 24,
       "header_type" : "packet_in_header_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "report_ethernet",
-      "id" : 24,
+      "id" : 25,
       "header_type" : "ethernet_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "report_eth_type",
-      "id" : 25,
+      "id" : 26,
       "header_type" : "eth_type_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "report_ipv4",
-      "id" : 26,
+      "id" : 27,
       "header_type" : "ipv4_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "report_udp",
-      "id" : 27,
+      "id" : 28,
       "header_type" : "udp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "report_fixed_header",
-      "id" : 28,
+      "id" : 29,
       "header_type" : "report_fixed_header_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "intl4_shim",
-      "id" : 29,
+      "id" : 30,
       "header_type" : "intl4_shim_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_header",
-      "id" : 30,
+      "id" : 31,
       "header_type" : "int_header_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_switch_id",
-      "id" : 31,
+      "id" : 32,
       "header_type" : "int_switch_id_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_port_ids",
-      "id" : 32,
+      "id" : 33,
       "header_type" : "int_port_ids_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_hop_latency",
-      "id" : 33,
+      "id" : 34,
       "header_type" : "int_hop_latency_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_q_occupancy",
-      "id" : 34,
+      "id" : 35,
       "header_type" : "int_q_occupancy_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_ingress_tstamp",
-      "id" : 35,
+      "id" : 36,
       "header_type" : "int_ingress_tstamp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_egress_tstamp",
-      "id" : 36,
+      "id" : 37,
       "header_type" : "int_egress_tstamp_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_q_congestion",
-      "id" : 37,
+      "id" : 38,
       "header_type" : "int_q_congestion_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_egress_tx_util",
-      "id" : 38,
+      "id" : 39,
       "header_type" : "int_egress_port_tx_util_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "int_data",
-      "id" : 39,
+      "id" : 40,
       "header_type" : "int_data_t",
       "metadata" : false,
       "pi_omit" : true
     },
     {
       "name" : "intl4_tail",
-      "id" : 40,
+      "id" : 41,
       "header_type" : "intl4_tail_t",
       "metadata" : false,
       "pi_omit" : true
@@ -1642,12 +1652,525 @@
                 }
               ],
               "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["scalars", "tmp_7"]
+                },
+                {
+                  "type" : "lookahead",
+                  "value" : [0, 64]
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "parameters" : [
+                    {
+                      "type" : "header",
+                      "value" : "gtpu_0"
+                    }
+                  ],
+                  "op" : "add_header"
+                }
+              ],
+              "op" : "primitive"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["gtpu_0", "version"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x3d"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0x07"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["gtpu_0", "pt"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x3c"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0x01"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["gtpu_0", "spare"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x3b"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0x01"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["gtpu_0", "ex_flag"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x3a"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0x01"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["gtpu_0", "seq_flag"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x39"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0x01"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["gtpu_0", "npdu_flag"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x38"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0x01"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["gtpu_0", "msgtype"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x30"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0xff"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["gtpu_0", "msglen"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x20"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0xffff"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["gtpu_0", "teid"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "field",
+                        "value" : ["scalars", "tmp_7"]
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0xffffffff"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["scalars", "tmp_2"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x3d"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0x07"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
+            },
+            {
+              "parameters" : [
+                {
+                  "type" : "field",
+                  "value" : ["scalars", "tmp_4"]
+                },
+                {
+                  "type" : "expression",
+                  "value" : {
+                    "type" : "expression",
+                    "value" : {
+                      "op" : "&",
+                      "left" : {
+                        "type" : "expression",
+                        "value" : {
+                          "op" : "&",
+                          "left" : {
+                            "type" : "expression",
+                            "value" : {
+                              "op" : ">>",
+                              "left" : {
+                                "type" : "field",
+                                "value" : ["scalars", "tmp_7"]
+                              },
+                              "right" : {
+                                "type" : "hexstr",
+                                "value" : "0x30"
+                              }
+                            }
+                          },
+                          "right" : {
+                            "type" : "hexstr",
+                            "value" : "0xffffffffffffffff"
+                          }
+                        }
+                      },
+                      "right" : {
+                        "type" : "hexstr",
+                        "value" : "0xff"
+                      }
+                    }
+                  }
+                }
+              ],
+              "op" : "set"
             }
           ],
           "transitions" : [
             {
               "type" : "hexstr",
-              "value" : "0x0868",
+              "value" : "0x086801ff",
               "mask" : null,
               "next_state" : "parse_gtpu"
             },
@@ -1662,6 +2185,14 @@
             {
               "type" : "field",
               "value" : ["udp", "dport"]
+            },
+            {
+              "type" : "field",
+              "value" : ["scalars", "tmp_2"]
+            },
+            {
+              "type" : "field",
+              "value" : ["scalars", "tmp_4"]
             }
           ]
         },
@@ -1885,7 +2416,7 @@
               "parameters" : [
                 {
                   "type" : "field",
-                  "value" : ["scalars", "tmp_2"]
+                  "value" : ["scalars", "tmp_8"]
                 },
                 {
                   "type" : "expression",
@@ -1957,7 +2488,7 @@
                   "type" : "expression",
                   "value" : {
                     "type" : "field",
-                    "value" : ["scalars", "tmp_2"]
+                    "value" : ["scalars", "tmp_8"]
                   }
                 }
               ],
@@ -2008,7 +2539,7 @@
       "id" : 0,
       "source_info" : {
         "filename" : "include/parser.p4",
-        "line" : 283,
+        "line" : 285,
         "column" : 8,
         "source_fragment" : "FabricDeparser"
       },
@@ -2769,7 +3300,7 @@
           ],
           "source_info" : {
             "filename" : "include/control/../header.p4",
-            "line" : 162,
+            "line" : 163,
             "column" : 36,
             "source_fragment" : "2w0x0; ..."
           }
@@ -2810,7 +3341,7 @@
           ],
           "source_info" : {
             "filename" : "include/control/../header.p4",
-            "line" : 162,
+            "line" : 163,
             "column" : 36,
             "source_fragment" : "2w0x0; ..."
           }
@@ -2976,7 +3507,7 @@
           ],
           "source_info" : {
             "filename" : "include/control/../header.p4",
-            "line" : 164,
+            "line" : 165,
             "column" : 39,
             "source_fragment" : "2w0x2;; ..."
           }
@@ -3040,7 +3571,7 @@
           ],
           "source_info" : {
             "filename" : "include/control/../header.p4",
-            "line" : 164,
+            "line" : 165,
             "column" : 39,
             "source_fragment" : "2w0x2;; ..."
           }
@@ -7565,7 +8096,7 @@
           "parameters" : [
             {
               "type" : "field",
-              "value" : ["scalars", "tmp_4"]
+              "value" : ["scalars", "tmp_9"]
             },
             {
               "type" : "expression",
@@ -7601,7 +8132,7 @@
             },
             {
               "type" : "field",
-              "value" : ["scalars", "tmp_4"]
+              "value" : ["scalars", "tmp_9"]
             }
           ],
           "source_info" : {
@@ -7623,7 +8154,7 @@
           "parameters" : [
             {
               "type" : "field",
-              "value" : ["scalars", "tmp_7"]
+              "value" : ["scalars", "tmp_10"]
             },
             {
               "type" : "expression",
@@ -7659,7 +8190,7 @@
             },
             {
               "type" : "field",
-              "value" : ["scalars", "tmp_7"]
+              "value" : ["scalars", "tmp_10"]
             }
           ],
           "source_info" : {
@@ -7752,7 +8283,7 @@
           ],
           "source_info" : {
             "filename" : "include/control/../header.p4",
-            "line" : 163,
+            "line" : 164,
             "column" : 37,
             "source_fragment" : "2w0x1; ..."
           }