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/*
* 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 __CUSTOM_HEADERS__
#define __CUSTOM_HEADERS__
#ifndef __INT_HEADERS__
#define __INT_HEADERS__
#include "telemetry_report_headers.p4"
// INT version 1.0
// INT header
header int_header_t {
bit<4> ver;
bit<2> rep;
bit<1> c;
bit<1> e;
bit<1> m;
bit<7> rsvd1;
bit<3> rsvd2;
bit<5> hop_metadata_len;
bit<8> remaining_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> rsvd3;
}
// INT meta-value headers - different header for each value type
header int_switch_id_t {
bit<32> switch_id;
}
header int_level1_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_level2_port_ids_t {
bit<32> ingress_port_id;
bit<32> egress_port_id;
}
header int_egress_port_tx_util_t {
bit<32> egress_port_tx_util;
}
header int_data_t {
// Maximum int metadata stack size in bits:
// (0x3F - 3) * 4 * 8 (excluding INT shim header and INT header)
varbit<1920> data;
}
// INT shim header for TCP/UDP
header intl4_shim_t {
bit<8> int_type;
bit<8> rsvd1;
bit<8> len;
bit<6> dscp;
bit<2> rsvd2;
}
struct int_metadata_t {
switch_id_t switch_id;
bit<16> new_bytes;
bit<8> new_words;
_BOOL source;
_BOOL sink;
_BOOL transit;
bit<8> intl4_shim_len;
}
struct headers_t {
packet_out_header_t packet_out;
packet_in_header_t packet_in;
// INT Report Encapsulation
ethernet_t report_ethernet;
ipv4_t report_ipv4;
udp_t report_udp;
// INT Report Headers
report_fixed_header_t report_fixed_header;
local_report_t report_local;
// Original packet's headers
ethernet_t ethernet;
ipv4_t ipv4;
tcp_t tcp;
udp_t udp;
// INT specific headers
intl4_shim_t intl4_shim;
int_header_t int_header;
int_data_t int_data;
int_switch_id_t int_switch_id;
int_level1_port_ids_t int_level1_port_ids;
int_hop_latency_t int_hop_latency;
int_q_occupancy_t int_q_occupancy;
int_ingress_tstamp_t int_ingress_tstamp;
int_egress_tstamp_t int_egress_tstamp;
int_level2_port_ids_t int_level2_port_ids;
int_egress_port_tx_util_t int_egress_tx_util;
}
struct local_metadata_t {
bit<16> l4_src_port;
bit<16> l4_dst_port;
next_hop_id_t next_hop_id;
bit<16> selector;
int_metadata_t int_meta;
bool compute_checksum;
}
#endif // __INT_HEADERS__
#endif // __CUSTOM_HEADERS__