blob: a77d82a4f4cb110c843046c5c08622ee0eff1df4 [file] [log] [blame]
/*
* 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 "../header.p4"
#include "../action.p4"
control PacketIoIngress(
inout parsed_headers_t hdr,
inout fabric_metadata_t fabric_metadata,
inout standard_metadata_t standard_metadata) {
apply {
if (hdr.packet_out.isValid()) {
standard_metadata.egress_spec = hdr.packet_out.egress_port;
hdr.packet_out.setInvalid();
fabric_metadata.is_controller_packet_out = _TRUE;
// No need for ingress processing, straight to egress.
exit;
}
}
}
control PacketIoEgress(
inout parsed_headers_t hdr,
inout fabric_metadata_t fabric_metadata,
inout standard_metadata_t standard_metadata) {
action pop_vlan() {
hdr.ethernet.ether_type = hdr.vlan_tag.ether_type;
hdr.vlan_tag.setInvalid();
}
apply {
if (fabric_metadata.is_controller_packet_out == _TRUE) {
// Transmit right away.
exit;
}
if (standard_metadata.egress_port == CPU_PORT) {
if (hdr.vlan_tag.isValid() && fabric_metadata.pop_vlan_when_packet_in == _TRUE) {
pop_vlan();
}
if (fabric_metadata.is_multicast == _TRUE &&
fabric_metadata.clone_to_cpu == _FALSE) {
// Is multicast but clone was not requested.
drop_now();
}
hdr.packet_in.setValid();
hdr.packet_in.ingress_port = standard_metadata.ingress_port;
// No need to process through the rest of the pipeline.
exit;
}
}
}