[ONOS-7128] Initial commit of fabric.p4
Change-Id: I5224c411a1eccdbee84b1fc0b1824c5fa922f689
diff --git a/pipelines/fabric/src/main/resources/include/control/next.p4 b/pipelines/fabric/src/main/resources/include/control/next.p4
new file mode 100644
index 0000000..5ab18fa
--- /dev/null
+++ b/pipelines/fabric/src/main/resources/include/control/next.p4
@@ -0,0 +1,154 @@
+/*
+ * 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 "../header.p4"
+#include "../action.p4"
+
+control Next (
+ inout parsed_headers_t hdr,
+ inout fabric_metadata_t fabric_metadata,
+ inout standard_metadata_t standard_metadata) {
+ direct_counter(CounterType.packets_and_bytes) next_id_mapping_counter;
+ direct_counter(CounterType.packets_and_bytes) simple_counter;
+ direct_counter(CounterType.packets_and_bytes) hashed_counter;
+ direct_counter(CounterType.packets_and_bytes) broadcast_counter;
+ action_selector(HashAlgorithm.crc16, 32w64, 32w16) ecmp_selector;
+
+ action set_next_type(next_type_t next_type) {
+ fabric_metadata.next_type = next_type;
+ }
+
+ action output(port_num_t port_num) {
+ standard_metadata.egress_spec = port_num;
+ if(!hdr.mpls.isValid()) {
+ if(hdr.ipv4.isValid()) {
+ hdr.ipv4.ttl = hdr.ipv4.ttl - 1;
+ }
+ else if (hdr.ipv6.isValid()) {
+ hdr.ipv6.hop_limit = hdr.ipv6.hop_limit - 1;
+ }
+ }
+ }
+
+ action set_vlan_output(vlan_id_t new_vlan_id, port_num_t port_num){
+ hdr.vlan_tag.vlan_id = new_vlan_id;
+
+ // don't remove the vlan from egress since we set the vlan to it.
+ fabric_metadata.pop_vlan_at_egress = false;
+ output(port_num);
+ }
+
+ action rewrite_smac(mac_addr_t smac) {
+ hdr.ethernet.src_addr = smac;
+ }
+
+ action rewrite_dmac(mac_addr_t dmac) {
+ hdr.ethernet.dst_addr = dmac;
+ }
+
+ action l3_routing(port_num_t port_num, mac_addr_t smac, mac_addr_t dmac) {
+ rewrite_smac(smac);
+ rewrite_dmac(dmac);
+ output(port_num);
+ }
+
+ action set_mcast_group(group_id_t gid, mac_addr_t smac) {
+ standard_metadata.mcast_grp = gid;
+ rewrite_smac(smac);
+ }
+
+ table next_id_mapping {
+ key = {
+ fabric_metadata.next_id: exact;
+ }
+
+ actions = {
+ set_next_type;
+ }
+ counters = next_id_mapping_counter;
+ }
+
+ table simple {
+ key = {
+ fabric_metadata.next_id: exact;
+ }
+
+ actions = {
+ output;
+ set_vlan_output;
+ l3_routing;
+ }
+ counters = simple_counter;
+ }
+
+ table hashed {
+ key = {
+ fabric_metadata.next_id: exact;
+ hdr.ipv4.src_addr: selector;
+ hdr.ipv4.dst_addr: selector;
+ hdr.ipv4.protocol: selector;
+ hdr.ipv6.src_addr: selector;
+ hdr.ipv6.dst_addr: selector;
+ hdr.ipv6.next_hdr: selector;
+ fabric_metadata.l4_src_port: selector;
+ fabric_metadata.l4_dst_port: selector;
+ }
+
+ actions = {
+ l3_routing;
+ }
+
+ implementation = ecmp_selector;
+ counters = hashed_counter;
+ }
+
+ /*
+ * Work in progress
+ */
+ table broadcast {
+ key = {
+ fabric_metadata.next_id: exact;
+ }
+ actions = {
+ set_mcast_group;
+ }
+ counters = broadcast_counter;
+ }
+
+ apply {
+ next_id_mapping.apply();
+ if (fabric_metadata.next_type == NEXT_TYPE_SIMPLE) simple.apply();
+ else if (fabric_metadata.next_type == NEXT_TYPE_HASHED) hashed.apply();
+ else if (fabric_metadata.next_type == NEXT_TYPE_BROADCAST) broadcast.apply();
+ // next_type == PUNT, leave it to packet-io egress
+ }
+}
+
+control EgressNextControl (
+ inout parsed_headers_t hdr,
+ inout fabric_metadata_t fabric_metadata,
+ inout standard_metadata_t standard_metadata){
+
+ apply {
+ // pop internal vlan if the meta is set
+ if (fabric_metadata.pop_vlan_at_egress) {
+ hdr.vlan_tag.setInvalid();
+ }
+ }
+}