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[ONOS-7154] Add DSCP bit support as an INT header indicator

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Change-Id: I2e80dd64b8c73808e96bba7470c1c331b562c45e
This commit is contained in:
Jonghwan Hyun 2017-12-04 15:48:44 -08:00 committed by Carmelo Cascone
parent 8bcd5863ff
commit 8be0339935
11 changed files with 719 additions and 459 deletions
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3
pipelines/basic/src/main/resources/include/headers.p4
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@ -38,7 +38,8 @@ header ethernet_t {
header ipv4_t {
bit<4> version;
bit<4> ihl;
bit<8> diffserv;
bit<6> dscp;
bit<2> ecn;
bit<16> len;
bit<16> identification;
bit<3> flags;

3
pipelines/basic/src/main/resources/include/int_defines.p4 → pipelines/basic/src/main/resources/include/int_definitions.p4
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@ -20,7 +20,8 @@
#include "defines.p4"
const next_hop_id_t INT_PORT = 54321;
/* indicate INT at LSB of DSCP */
const bit<6> INT_DSCP = 0x1;
typedef bit<48> timestamp_t;
typedef bit<32> switch_id_t;

3
pipelines/basic/src/main/resources/include/int_headers.p4
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@ -84,12 +84,11 @@ header intl4_tail_t {
bit<8> dscp;
}
header int_metadata_t {
struct int_metadata_t {
switch_id_t switch_id;
bit<16> insert_byte_cnt;
bit<1> source;
bit<1> sink;
bit<16> origin_port;
bit<8> mirror_id;
bit<16> flow_id;
bit<8> metadata_len;

15
pipelines/basic/src/main/resources/include/int_parser.p4
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@ -15,8 +15,8 @@
*/
/* -*- P4_16 -*- */
#ifndef __PARSER__
#define __PARSER__
#ifndef __INT_PARSER__
#define __INT_PARSER__
parser int_parser (
packet_in packet,
@ -54,15 +54,20 @@ parser int_parser (
state parse_tcp {
packet.extract(hdr.tcp);
transition accept;
local_metadata.l4_src_port = hdr.tcp.src_port;
local_metadata.l4_dst_port = hdr.tcp.dst_port;
transition select((hdr.ipv4.dscp & INT_DSCP) == INT_DSCP) {
true: parse_intl4_shim;
default: accept;
}
}
state parse_udp {
packet.extract(hdr.udp);
local_metadata.l4_src_port = hdr.udp.src_port;
local_metadata.l4_dst_port = hdr.udp.dst_port;
transition select(hdr.udp.dst_port) {
INT_PORT: parse_intl4_shim;
transition select((hdr.ipv4.dscp & INT_DSCP) == INT_DSCP) {
true: parse_intl4_shim;
default: accept;
}
}

21
pipelines/basic/src/main/resources/include/int_sink.p4
View File

@ -23,27 +23,34 @@ control process_int_sink (
inout headers_t hdr,
inout local_metadata_t local_metadata,
inout standard_metadata_t standard_metadata) {
action restore_header () {
hdr.udp.dst_port = hdr.intl4_tail.dest_port;
hdr.ipv4.dscp = (bit<6>)hdr.intl4_tail.dscp;
}
action int_sink() {
// restore length fields of IPv4 header and UDP header
hdr.ipv4.len = hdr.ipv4.len - (bit<16>)((hdr.intl4_shim.len - (bit<8>)hdr.int_header.ins_cnt) << 2);
hdr.udp.length_ = hdr.udp.length_ - (bit<16>)((hdr.intl4_shim.len - (bit<8>)hdr.int_header.ins_cnt) << 2);
// restore original dst port
local_metadata.int_meta.origin_port = hdr.intl4_tail.dest_port;
// remove all the INT information from the packet
hdr.int_header.setInvalid();
hdr.int_data.setInvalid();
hdr.intl4_shim.setInvalid();
hdr.intl4_tail.setInvalid();
}
action restore_port () {
hdr.udp.dst_port = local_metadata.int_meta.origin_port;
hdr.int_switch_id.setInvalid();
hdr.int_port_ids.setInvalid();
hdr.int_hop_latency.setInvalid();
hdr.int_q_occupancy.setInvalid();
hdr.int_ingress_tstamp.setInvalid();
hdr.int_egress_tstamp.setInvalid();
hdr.int_q_congestion.setInvalid();
hdr.int_egress_tx_util.setInvalid();
}
apply {
if (local_metadata.int_meta.sink == 1) {
restore_header();
int_sink();
restore_port();
}
}
}

39
pipelines/basic/src/main/resources/include/int_source.p4
View File

@ -52,26 +52,26 @@ control process_int_source (
hdr.intl4_tail.setValid();
hdr.intl4_tail.next_proto = hdr.ipv4.protocol;
hdr.intl4_tail.dest_port = local_metadata.l4_dst_port;
hdr.intl4_tail.dscp = 0; // not used
hdr.udp.dst_port = INT_PORT;
hdr.intl4_tail.dscp = (bit<8>) hdr.ipv4.dscp;
// add the header len (8 bytes) to total len
hdr.ipv4.len = hdr.ipv4.len + 16;
hdr.udp.length_ = hdr.udp.length_ + 16;
}
action int_source_dscp(bit<8> max_hop, bit<5> ins_cnt, bit<4> ins_mask0003, bit<4> ins_mask0407) {
int_source(max_hop, ins_cnt, ins_mask0003, ins_mask0407);
hdr.ipv4.dscp = INT_DSCP;
}
table tb_int_source {
key = {
local_metadata.int_meta.sink: exact;
local_metadata.int_meta.source: exact;
hdr.ipv4.src_addr: ternary;
hdr.ipv4.dst_addr: ternary;
local_metadata.l4_src_port: ternary;
local_metadata.l4_dst_port: ternary;
}
actions = {
int_source; // sink = 0 & source = 1
int_source_dscp;
}
counters = counter_int_source;
size = 1024;
@ -87,18 +87,17 @@ control process_set_source_sink (
inout local_metadata_t local_metadata,
inout standard_metadata_t standard_metadata) {
direct_counter(CounterType.packets_and_bytes) counter_set_source;
direct_counter(CounterType.packets_and_bytes) counter_set_sink;
direct_counter(CounterType.packets_and_bytes) counter_set_source_sink;
action int_set_source () {
local_metadata.int_meta.source = 1;
local_metadata.int_meta.source = 1;
}
action int_set_sink () {
local_metadata.int_meta.sink = 1;
}
table tb_set_source {
table tb_set_source_sink {
key = {
hdr.ipv4.src_addr: ternary;
hdr.ipv4.dst_addr: ternary;
@ -107,30 +106,14 @@ control process_set_source_sink (
}
actions = {
int_set_source;
}
counters = counter_set_source;
size = 1024;
}
table tb_set_sink {
key = {
hdr.ipv4.src_addr: ternary;
hdr.ipv4.dst_addr: ternary;
local_metadata.l4_src_port: ternary;
local_metadata.l4_dst_port: ternary;
}
actions = {
int_set_sink;
}
counters = counter_set_sink;
counters = counter_set_source_sink;
size = 1024;
}
apply {
if (hdr.udp.isValid()) {
tb_set_source.apply();
tb_set_sink.apply();
}
tb_set_source_sink.apply();
}
}
#endif

8
pipelines/basic/src/main/resources/include/int_transit.p4
View File

@ -307,6 +307,8 @@ control process_int_outer_encap (
}
action int_update_udp() {
hdr.udp.length_ = hdr.udp.length_ + local_metadata.int_meta.insert_byte_cnt;
}
action int_update_shim() {
hdr.intl4_shim.len = hdr.intl4_shim.len + (bit<8>)hdr.int_header.ins_cnt;
}
@ -314,10 +316,12 @@ control process_int_outer_encap (
if (hdr.ipv4.isValid()) {
int_update_ipv4();
}
if (hdr.intl4_shim.isValid()) {
if (hdr.udp.isValid()) {
int_update_udp();
}
if (hdr.intl4_shim.isValid()) {
int_update_shim();
}
}
}

10
pipelines/basic/src/main/resources/int.p4
View File

@ -21,7 +21,7 @@
#include "include/defines.p4"
#include "include/headers.p4"
#include "include/actions.p4"
#include "include/int_defines.p4"
#include "include/int_definitions.p4"
#include "include/int_headers.p4"
#include "include/packet_io.p4"
#include "include/port_counters.p4"
@ -53,9 +53,11 @@ control int_egress (
apply {
if (standard_metadata.ingress_port != CPU_PORT &&
standard_metadata.egress_port != CPU_PORT &&
hdr.udp.isValid()) {
process_int_source.apply(hdr, local_metadata, standard_metadata);
if(hdr.udp.dst_port == INT_PORT) {
(hdr.udp.isValid() || hdr.tcp.isValid())) {
if (local_metadata.int_meta.sink == 0 && local_metadata.int_meta.source == 1) {
process_int_source.apply(hdr, local_metadata, standard_metadata);
}
if(hdr.int_header.isValid()) {
process_int_transit.apply(hdr, local_metadata, standard_metadata);
// update underlay header based on INT information inserted
process_int_outer_encap.apply(hdr, local_metadata, standard_metadata);

3
pipelines/basic/src/main/resources/p4c-out/bmv2/basic.json
View File

@ -47,7 +47,8 @@
"fields" : [
["version", 4, false],
["ihl", 4, false],
["diffserv", 8, false],
["dscp", 6, false],
["ecn", 2, false],
["len", 16, false],
["identification", 16, false],
["flags", 3, false],

964
pipelines/basic/src/main/resources/p4c-out/bmv2/int.json
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File diff suppressed because it is too large Load Diff

109
pipelines/basic/src/main/resources/p4c-out/bmv2/int.p4info
View File

@ -76,9 +76,9 @@ tables {
}
tables {
preamble {
id: 33573105
name: "process_set_source_sink.tb_set_source"
alias: "tb_set_source"
id: 33582667
name: "process_set_source_sink.tb_set_source_sink"
alias: "tb_set_source_sink"
}
match_fields {
id: 1
@ -107,43 +107,6 @@ tables {
action_refs {
id: 16816387
}
action_refs {
id: 16800567
annotations: "@defaultonly()"
}
direct_resource_ids: 302036180
size: 1024
}
tables {
preamble {
id: 33590037
name: "process_set_source_sink.tb_set_sink"
alias: "tb_set_sink"
}
match_fields {
id: 1
name: "hdr.ipv4.src_addr"
bitwidth: 32
match_type: TERNARY
}
match_fields {
id: 2
name: "hdr.ipv4.dst_addr"
bitwidth: 32
match_type: TERNARY
}
match_fields {
id: 3
name: "local_metadata.l4_src_port"
bitwidth: 16
match_type: TERNARY
}
match_fields {
id: 4
name: "local_metadata.l4_dst_port"
bitwidth: 16
match_type: TERNARY
}
action_refs {
id: 16784579
}
@ -151,7 +114,7 @@ tables {
id: 16800567
annotations: "@defaultonly()"
}
direct_resource_ids: 302053848
direct_resource_ids: 301997871
size: 1024
}
tables {
@ -162,42 +125,30 @@ tables {
}
match_fields {
id: 1
name: "local_metadata.int_meta.sink"
bitwidth: 1
match_type: EXACT
}
match_fields {
id: 2
name: "local_metadata.int_meta.source"
bitwidth: 1
match_type: EXACT
}
match_fields {
id: 3
name: "hdr.ipv4.src_addr"
bitwidth: 32
match_type: TERNARY
}
match_fields {
id: 4
id: 2
name: "hdr.ipv4.dst_addr"
bitwidth: 32
match_type: TERNARY
}
match_fields {
id: 5
id: 3
name: "local_metadata.l4_src_port"
bitwidth: 16
match_type: TERNARY
}
match_fields {
id: 6
id: 4
name: "local_metadata.l4_dst_port"
bitwidth: 16
match_type: TERNARY
}
action_refs {
id: 16841774
id: 16820636
}
action_refs {
id: 16800567
@ -423,9 +374,9 @@ actions {
}
actions {
preamble {
id: 16841774
name: "process_int_source.int_source"
alias: "int_source"
id: 16820636
name: "process_int_source.int_source_dscp"
alias: "int_source_dscp"
}
params {
id: 1
@ -707,16 +658,23 @@ actions {
}
actions {
preamble {
id: 16826281
name: "process_int_sink.int_sink"
alias: "int_sink"
id: 16835077
name: "process_int_outer_encap.int_update_shim"
alias: "int_update_shim"
}
}
actions {
preamble {
id: 16792548
name: "process_int_sink.restore_port"
alias: "restore_port"
id: 16798801
name: "process_int_sink.restore_header"
alias: "restore_header"
}
}
actions {
preamble {
id: 16826281
name: "process_int_sink.int_sink"
alias: "int_sink"
}
}
counters {
@ -754,25 +712,14 @@ direct_counters {
}
direct_counters {
preamble {
id: 302036180
name: "process_set_source_sink.counter_set_source"
alias: "counter_set_source"
id: 301997871
name: "process_set_source_sink.counter_set_source_sink"
alias: "counter_set_source_sink"
}
spec {
unit: BOTH
}
direct_table_id: 33573105
}
direct_counters {
preamble {
id: 302053848
name: "process_set_source_sink.counter_set_sink"
alias: "counter_set_sink"
}
spec {
unit: BOTH
}
direct_table_id: 33590037
direct_table_id: 33582667
}
direct_counters {
preamble {