Refactor fabric.p4 INT support to allow compilation on more P4 targets
Also use constant entries for instruction mask tables to avoid
programming them at runtime.
Change-Id: Ia1ab1ecd42a433daec171f9a30bcdba3b8484061
diff --git a/pipelines/fabric/src/main/resources/include/int/int_header.p4 b/pipelines/fabric/src/main/resources/include/int/int_header.p4
new file mode 100644
index 0000000..f339995
--- /dev/null
+++ b/pipelines/fabric/src/main/resources/include/int/int_header.p4
@@ -0,0 +1,141 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __INT_HEADER__
+#define __INT_HEADER__
+
+#include "../define.p4"
+
+struct int_metadata_t {
+ _BOOL source;
+ _BOOL transit;
+ _BOOL sink;
+ bit<32> switch_id;
+ bit<8> new_words;
+ bit<16> new_bytes;
+}
+
+// INT headers - 8 bytes
+header int_header_t {
+ bit<2> ver;
+ bit<2> rep;
+ bit<1> c;
+ bit<1> e;
+ bit<5> rsvd1;
+ bit<5> ins_cnt;
+ bit<8> max_hop_cnt;
+ bit<8> total_hop_cnt;
+ bit<4> instruction_mask_0003; /* split the bits for lookup */
+ bit<4> instruction_mask_0407;
+ bit<4> instruction_mask_0811;
+ bit<4> instruction_mask_1215;
+ bit<16> rsvd2;
+}
+
+// INT shim header for TCP/UDP - 4 bytes
+header intl4_shim_t {
+ bit<8> int_type;
+ bit<8> rsvd1;
+ bit<8> len_words; // 4-byte words.
+ bit<8> rsvd2;
+}
+// INT tail header for TCP/UDP - 4 bytes
+header intl4_tail_t {
+ bit<8> next_proto;
+ bit<16> dest_port;
+ bit<2> padding;
+ bit<6> dscp;
+}
+
+header int_data_t {
+ // Maximum int metadata stack size in bits:
+ // (0xFF -4) * 32 (excluding INT shim header, tail header and INT header)
+ varbit<8032> data;
+}
+
+#ifdef WITH_INT_TRANSIT
+// INT meta-value headers - 4 bytes each
+// Different header for each value type
+header int_switch_id_t {
+ bit<32> switch_id;
+}
+header int_port_ids_t {
+ bit<16> ingress_port_id;
+ bit<16> egress_port_id;
+}
+header int_hop_latency_t {
+ bit<32> hop_latency;
+}
+header int_q_occupancy_t {
+ bit<8> q_id;
+ bit<24> q_occupancy;
+}
+header int_ingress_tstamp_t {
+ bit<32> ingress_tstamp;
+}
+header int_egress_tstamp_t {
+ bit<32> egress_tstamp;
+}
+header int_q_congestion_t {
+ bit<8> q_id;
+ bit<24> q_congestion;
+}
+header int_egress_port_tx_util_t {
+ bit<32> egress_port_tx_util;
+}
+#endif // WITH_INT_TRANSIT
+
+#ifdef WITH_INT_SINK
+// Report Telemetry Headers
+header report_fixed_header_t {
+ bit<4> ver;
+ bit<4> nproto;
+ bit<1> d;
+ bit<1> q;
+ bit<1> f;
+ bit<15> rsvd;
+ bit<6> hw_id;
+ bit<32> seq_no;
+ bit<32> ingress_tstamp;
+}
+
+// Telemetry drop report header
+header drop_report_header_t {
+ bit<32> switch_id;
+ bit<16> ingress_port_id;
+ bit<16> egress_port_id;
+ bit<8> queue_id;
+ bit<8> drop_reason;
+ bit<16> pad;
+}
+
+// Switch Local Report Header
+header local_report_header_t {
+ bit<32> switch_id;
+ bit<16> ingress_port_id;
+ bit<16> egress_port_id;
+ bit<8> queue_id;
+ bit<24> queue_occupancy;
+ bit<32> egress_tstamp;
+}
+
+header_union local_report_t {
+ drop_report_header_t drop_report_header;
+ local_report_header_t local_report_header;
+}
+#endif // WITH_INT_SINK
+
+#endif