ONOS-7058 Refactored default pipeconfs in new pipelines directory
- Minimal refactoring of P4 programs
- Removed symlinks to BMv2 JSON/P4Info
- Bumped p4c commit (which fixes known parser bug)
- Renamed "default" pipeconf to "basic" (ONOS-6818)
Change-Id: I319f8b142ab22dba9b15457e28cd62d17f78a423
diff --git a/pipelines/basic/src/main/resources/ecmp.p4 b/pipelines/basic/src/main/resources/ecmp.p4
new file mode 100644
index 0000000..ab86c39
--- /dev/null
+++ b/pipelines/basic/src/main/resources/ecmp.p4
@@ -0,0 +1,105 @@
+/*
+ * 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.
+ */
+
+#include <core.p4>
+#include <v1model.p4>
+
+#include "include/headers.p4"
+#include "include/defines.p4"
+#include "include/parsers.p4"
+#include "include/actions.p4"
+#include "include/port_counters.p4"
+#include "include/checksums.p4"
+#include "include/packet_io.p4"
+#include "include/table0.p4"
+
+// FIXME: this program is obsolete and should be removed.
+// The PI ECMP demo app should be refactored to use the WCMP capability of default.p4
+
+// Expected number of ports of an ECMP group.
+// This value is fixed, .i.e. we do not support ECMP over port groups of different
+// size. Due to hardware limitations, this value must be constant and a power of 2.
+
+#define ECMP_GROUP_SIZE 128w2
+
+//------------------------------------------------------------------------------
+// INGRESS PIPELINE
+//------------------------------------------------------------------------------
+
+control ingress(inout headers_t hdr,
+ inout local_metadata_t local_metadata,
+ inout standard_metadata_t standard_metadata) {
+
+ direct_counter(CounterType.packets_and_bytes) ecmp_table_counter;
+
+ table ecmp_table {
+ key = {
+ local_metadata.next_hop_id : exact;
+ local_metadata.selector : exact;
+ }
+ actions = {
+ set_egress_port(standard_metadata);
+ }
+ counters = ecmp_table_counter;
+ }
+
+ action set_ecmp_selector() {
+ hash(local_metadata.selector, HashAlgorithm.crc16, (bit<64>) 0,
+ {
+ hdr.ipv4.src_addr,
+ hdr.ipv4.dst_addr,
+ hdr.ipv4.protocol,
+ local_metadata.l4_src_port,
+ local_metadata.l4_dst_port
+ },
+ ECMP_GROUP_SIZE);
+ }
+
+ apply {
+ port_counters_ingress.apply(hdr, standard_metadata);
+ packetio_ingress.apply(hdr, standard_metadata);
+ table0_control.apply(hdr, local_metadata, standard_metadata);
+ if (local_metadata.next_hop_id > 0) {
+ set_ecmp_selector();
+ ecmp_table.apply();
+ }
+ }
+}
+
+//------------------------------------------------------------------------------
+// EGRESS PIPELINE
+//------------------------------------------------------------------------------
+
+control egress(inout headers_t hdr,
+ inout local_metadata_t local_metadata,
+ inout standard_metadata_t standard_metadata) {
+
+ apply {
+ port_counters_egress.apply(hdr, standard_metadata);
+ packetio_egress.apply(hdr, standard_metadata);
+ }
+}
+
+//------------------------------------------------------------------------------
+// SWITCH INSTANTIATION
+//------------------------------------------------------------------------------
+
+V1Switch(parser_impl(),
+ verify_checksum_control(),
+ ingress(),
+ egress(),
+ compute_checksum_control(),
+ deparser()) main;