| /* |
| * 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_REPORT__ |
| #define __INT_REPORT__ |
| |
| #include "telemetry_report_headers.p4" |
| |
| control process_int_report ( |
| inout headers_t hdr, |
| inout local_metadata_t local_metadata, |
| inout standard_metadata_t standard_metadata) { |
| |
| action add_report_fixed_header() { |
| /* Device should include its own INT metadata as embedded, |
| * we'll not use local_report_header for this purpose. |
| */ |
| hdr.report_fixed_header.setValid(); |
| hdr.report_fixed_header.ver = 1; |
| hdr.report_fixed_header.len = 4; |
| /* only support for flow_watchlist */ |
| hdr.report_fixed_header.nproto = NPROTO_ETHERNET; |
| hdr.report_fixed_header.rep_md_bits = 0; |
| hdr.report_fixed_header.d = 0; |
| hdr.report_fixed_header.q = 0; |
| hdr.report_fixed_header.f = 1; |
| hdr.report_fixed_header.rsvd = 0; |
| //TODO how to get information specific to the switch |
| hdr.report_fixed_header.hw_id = HW_ID; |
| hdr.report_fixed_header.sw_id = local_metadata.int_meta.switch_id; |
| // TODO how save a variable and increment |
| hdr.report_fixed_header.seq_no = 0; |
| //TODO how to get timestamp from ingress ns |
| hdr.report_fixed_header.ingress_tstamp = (bit<32>) standard_metadata.enq_timestamp; |
| |
| } |
| |
| action do_report_encapsulation(mac_t src_mac, mac_t mon_mac, ip_address_t src_ip, |
| ip_address_t mon_ip, l4_port_t mon_port) { |
| //Report Ethernet Header |
| hdr.report_ethernet.setValid(); |
| hdr.report_ethernet.dst_addr = mon_mac; |
| hdr.report_ethernet.src_addr = src_mac; |
| hdr.report_ethernet.ether_type = ETH_TYPE_IPV4; |
| |
| //Report IPV4 Header |
| hdr.report_ipv4.setValid(); |
| hdr.report_ipv4.version = IP_VERSION_4; |
| hdr.report_ipv4.ihl = IPV4_IHL_MIN; |
| hdr.report_ipv4.dscp = 6w0; |
| hdr.report_ipv4.ecn = 2w0; |
| /* Total Len is report_ipv4_len + report_udp_len + report_fixed_hdr_len + ethernet_len + ipv4_totalLen */ |
| hdr.report_ipv4.len = (bit<16>) IPV4_MIN_HEAD_LEN + (bit<16>) UDP_HEADER_LEN + (bit<16>) REPORT_FIXED_HEADER_LEN + |
| (bit<16>) ETH_HEADER_LEN + (bit<16>) IPV4_MIN_HEAD_LEN + (bit<16>) UDP_HEADER_LEN + (((bit<16>) hdr.intl4_shim.len)<< 2); |
| /* Dont Fragment bit should be set */ |
| hdr.report_ipv4.identification = 0; |
| hdr.report_ipv4.flags = 0; |
| hdr.report_ipv4.frag_offset = 0; |
| hdr.report_ipv4.ttl = REPORT_HDR_TTL; |
| hdr.report_ipv4.protocol = IP_PROTO_UDP; |
| hdr.report_ipv4.src_addr = src_ip; |
| hdr.report_ipv4.dst_addr = mon_ip; |
| |
| //Report UDP Header |
| hdr.report_udp.setValid(); |
| hdr.report_udp.src_port = 0; |
| hdr.report_udp.dst_port = mon_port; |
| hdr.report_udp.length_ = (bit<16>) UDP_HEADER_LEN + (bit<16>) REPORT_FIXED_HEADER_LEN + |
| (bit<16>) ETH_HEADER_LEN + (bit<16>) IPV4_MIN_HEAD_LEN + (bit<16>) UDP_HEADER_LEN + |
| (((bit<16>) hdr.intl4_shim.len)<< 2); |
| |
| local_metadata.compute_checksum = true; |
| add_report_fixed_header(); |
| |
| truncate((bit<32>)hdr.report_ipv4.len + (bit<32>) ETH_HEADER_LEN); |
| } |
| |
| // Cloned packet is forwarded according to the mirroring_add command |
| table tb_generate_report { |
| // We don't really need a key here, however we add a dummy one as a |
| // workaround to ONOS inability to properly support default actions. |
| key = { |
| hdr.int_header.isValid(): exact @name("int_is_valid"); |
| } |
| actions = { |
| do_report_encapsulation; |
| @defaultonly nop(); |
| } |
| default_action = nop; |
| } |
| |
| apply { |
| tb_generate_report.apply(); |
| } |
| } |
| #endif |