Integrating INT into fabric pipeline
Change-Id: I9555de0852de79d1a3c7302ecaa17ff112fc5107
diff --git a/pipelines/fabric/src/main/resources/include/int_transit.p4 b/pipelines/fabric/src/main/resources/include/int_transit.p4
new file mode 100644
index 0000000..3f863e8
--- /dev/null
+++ b/pipelines/fabric/src/main/resources/include/int_transit.p4
@@ -0,0 +1,326 @@
+/*
+ * 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.
+ */
+
+/* -*- P4_16 -*- */
+#ifndef __INT_TRANSIT__
+#define __INT_TRANSIT__
+control process_int_transit (
+ inout parsed_headers_t hdr,
+ inout fabric_metadata_t fabric_metadata,
+ inout standard_metadata_t standard_metadata) {
+
+ direct_counter(CounterType.packets_and_bytes) counter_int_insert;
+ direct_counter(CounterType.packets_and_bytes) counter_int_inst_0003;
+ direct_counter(CounterType.packets_and_bytes) counter_int_inst_0407;
+
+ action int_update_total_hop_cnt() {
+ hdr.int_header.total_hop_cnt = hdr.int_header.total_hop_cnt + 1;
+ }
+
+ action int_transit(switch_id_t switch_id) {
+ fabric_metadata.int_meta.switch_id = switch_id;
+ fabric_metadata.int_meta.insert_byte_cnt = (bit<16>) hdr.int_header.ins_cnt << 2;
+ }
+
+ /* Instr Bit 0 */
+ action int_set_header_0() { //switch_id
+ hdr.int_switch_id.setValid();
+ hdr.int_switch_id.switch_id = fabric_metadata.int_meta.switch_id;
+ }
+ action int_set_header_1() { //port_ids
+ hdr.int_port_ids.setValid();
+ hdr.int_port_ids.ingress_port_id =
+ (bit<16>) standard_metadata.ingress_port;
+ hdr.int_port_ids.egress_port_id =
+ (bit<16>) standard_metadata.egress_port;
+ }
+ action int_set_header_2() { //hop_latency
+ hdr.int_hop_latency.setValid();
+ hdr.int_hop_latency.hop_latency =
+ (bit<32>) standard_metadata.deq_timedelta;
+ }
+ action int_set_header_3() { //q_occupancy
+ // TODO: Support egress queue ID
+ hdr.int_q_occupancy.setValid();
+ hdr.int_q_occupancy.q_id =
+ 0;
+ // (bit<8>) standard_metadata.egress_qid;
+ hdr.int_q_occupancy.q_occupancy =
+ (bit<24>) standard_metadata.deq_qdepth;
+ }
+ action int_set_header_4() { //ingress_tstamp
+ hdr.int_ingress_tstamp.setValid();
+ hdr.int_ingress_tstamp.ingress_tstamp =
+ (bit<32>) standard_metadata.enq_timestamp;
+ }
+ action int_set_header_5() { //egress_timestamp
+ hdr.int_egress_tstamp.setValid();
+ hdr.int_egress_tstamp.egress_tstamp =
+ (bit<32>) standard_metadata.enq_timestamp +
+ (bit<32>) standard_metadata.deq_timedelta;
+ }
+ action int_set_header_6() { //q_congestion
+ // TODO: implement queue congestion support in BMv2
+ // TODO: update egress queue ID
+ hdr.int_q_congestion.setValid();
+ hdr.int_q_congestion.q_id =
+ 0;
+ // (bit<8>) standard_metadata.egress_qid;
+ hdr.int_q_congestion.q_congestion =
+ // (bit<24>) queueing_metadata.deq_congestion;
+ 0;
+ }
+ action int_set_header_7() { //egress_port_tx_utilization
+ // TODO: implement tx utilization support in BMv2
+ hdr.int_egress_tx_util.setValid();
+ hdr.int_egress_tx_util.egress_port_tx_util =
+ // (bit<32>) queueing_metadata.tx_utilization;
+ 0;
+ }
+
+ /* action function for bits 0-3 combinations, 0 is msb, 3 is lsb */
+ /* Each bit set indicates that corresponding INT header should be added */
+ action int_set_header_0003_i0() {
+ }
+ action int_set_header_0003_i1() {
+ int_set_header_3();
+ }
+ action int_set_header_0003_i2() {
+ int_set_header_2();
+ }
+ action int_set_header_0003_i3() {
+ int_set_header_3();
+ int_set_header_2();
+ }
+ action int_set_header_0003_i4() {
+ int_set_header_1();
+ }
+ action int_set_header_0003_i5() {
+ int_set_header_3();
+ int_set_header_1();
+ }
+ action int_set_header_0003_i6() {
+ int_set_header_2();
+ int_set_header_1();
+ }
+ action int_set_header_0003_i7() {
+ int_set_header_3();
+ int_set_header_2();
+ int_set_header_1();
+ }
+ action int_set_header_0003_i8() {
+ int_set_header_0();
+ }
+ action int_set_header_0003_i9() {
+ int_set_header_3();
+ int_set_header_0();
+ }
+ action int_set_header_0003_i10() {
+ int_set_header_2();
+ int_set_header_0();
+ }
+ action int_set_header_0003_i11() {
+ int_set_header_3();
+ int_set_header_2();
+ int_set_header_0();
+ }
+ action int_set_header_0003_i12() {
+ int_set_header_1();
+ int_set_header_0();
+ }
+ action int_set_header_0003_i13() {
+ int_set_header_3();
+ int_set_header_1();
+ int_set_header_0();
+ }
+ action int_set_header_0003_i14() {
+ int_set_header_2();
+ int_set_header_1();
+ int_set_header_0();
+ }
+ action int_set_header_0003_i15() {
+ int_set_header_3();
+ int_set_header_2();
+ int_set_header_1();
+ int_set_header_0();
+ }
+
+ /* action function for bits 4-7 combinations, 4 is msb, 7 is lsb */
+ action int_set_header_0407_i0() {
+ }
+ action int_set_header_0407_i1() {
+ int_set_header_7();
+ }
+ action int_set_header_0407_i2() {
+ int_set_header_6();
+ }
+ action int_set_header_0407_i3() {
+ int_set_header_7();
+ int_set_header_6();
+ }
+ action int_set_header_0407_i4() {
+ int_set_header_5();
+ }
+ action int_set_header_0407_i5() {
+ int_set_header_7();
+ int_set_header_5();
+ }
+ action int_set_header_0407_i6() {
+ int_set_header_6();
+ int_set_header_5();
+ }
+ action int_set_header_0407_i7() {
+ int_set_header_7();
+ int_set_header_6();
+ int_set_header_5();
+ }
+ action int_set_header_0407_i8() {
+ int_set_header_4();
+ }
+ action int_set_header_0407_i9() {
+ int_set_header_7();
+ int_set_header_4();
+ }
+ action int_set_header_0407_i10() {
+ int_set_header_6();
+ int_set_header_4();
+ }
+ action int_set_header_0407_i11() {
+ int_set_header_7();
+ int_set_header_6();
+ int_set_header_4();
+ }
+ action int_set_header_0407_i12() {
+ int_set_header_5();
+ int_set_header_4();
+ }
+ action int_set_header_0407_i13() {
+ int_set_header_7();
+ int_set_header_5();
+ int_set_header_4();
+ }
+ action int_set_header_0407_i14() {
+ int_set_header_6();
+ int_set_header_5();
+ int_set_header_4();
+ }
+ action int_set_header_0407_i15() {
+ int_set_header_7();
+ int_set_header_6();
+ int_set_header_5();
+ int_set_header_4();
+ }
+
+ table tb_int_insert {
+ key = {}
+ actions = {
+ int_transit;
+ }
+ counters = counter_int_insert;
+ size = 2;
+ }
+
+ /* Table to process instruction bits 0-3 */
+ table tb_int_inst_0003 {
+ key = {
+ hdr.int_header.instruction_mask_0003 : exact;
+ }
+ actions = {
+ int_set_header_0003_i0;
+ int_set_header_0003_i1;
+ int_set_header_0003_i2;
+ int_set_header_0003_i3;
+ int_set_header_0003_i4;
+ int_set_header_0003_i5;
+ int_set_header_0003_i6;
+ int_set_header_0003_i7;
+ int_set_header_0003_i8;
+ int_set_header_0003_i9;
+ int_set_header_0003_i10;
+ int_set_header_0003_i11;
+ int_set_header_0003_i12;
+ int_set_header_0003_i13;
+ int_set_header_0003_i14;
+ int_set_header_0003_i15;
+ }
+ counters = counter_int_inst_0003;
+ size = 16;
+ }
+
+ /* Table to process instruction bits 4-7 */
+ table tb_int_inst_0407 {
+ key = {
+ hdr.int_header.instruction_mask_0407 : exact;
+ }
+ actions = {
+ int_set_header_0407_i0;
+ int_set_header_0407_i1;
+ int_set_header_0407_i2;
+ int_set_header_0407_i3;
+ int_set_header_0407_i4;
+ int_set_header_0407_i5;
+ int_set_header_0407_i6;
+ int_set_header_0407_i7;
+ int_set_header_0407_i8;
+ int_set_header_0407_i9;
+ int_set_header_0407_i10;
+ int_set_header_0407_i11;
+ int_set_header_0407_i12;
+ int_set_header_0407_i13;
+ int_set_header_0407_i14;
+ int_set_header_0407_i15;
+ }
+ counters = counter_int_inst_0407;
+ size = 16;
+ }
+
+ apply {
+ tb_int_insert.apply();
+ tb_int_inst_0003.apply();
+ tb_int_inst_0407.apply();
+ int_update_total_hop_cnt();
+ }
+}
+
+control process_int_outer_encap (
+ inout parsed_headers_t hdr,
+ inout fabric_metadata_t fabric_metadata,
+ inout standard_metadata_t standard_metadata) {
+
+ action int_update_ipv4() {
+ hdr.ipv4.total_len = hdr.ipv4.total_len + fabric_metadata.int_meta.insert_byte_cnt;
+ }
+ action int_update_udp() {
+ hdr.udp.len = hdr.udp.len + fabric_metadata.int_meta.insert_byte_cnt;
+ }
+ action int_update_shim() {
+ hdr.intl4_shim.len = hdr.intl4_shim.len + (bit<8>)hdr.int_header.ins_cnt;
+ }
+
+ apply {
+ if (hdr.ipv4.isValid()) {
+ int_update_ipv4();
+ }
+ if (hdr.udp.isValid()) {
+ int_update_udp();
+ }
+ if (hdr.intl4_shim.isValid()) {
+ int_update_shim();
+ }
+ }
+}
+
+#endif