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Try to reproduce bool bug try #2

master
Nico Schottelius 4 years ago
parent
commit
a5a75da6b4
  1. 39
      bug1-bool/checksums.p4
  2. 140
      bug1-bool/headers.p4
  3. 97
      bug1-bool/parsers.p4
  4. 14
      bug1-bool/settings.p4
  5. 256
      bug1-bool/static-mapping.p4
  6. 2
      p4app/bug1-bool.json

39
bug1-bool/checksums.p4

@ -0,0 +1,39 @@
/* -*- P4_16 -*- */
#ifndef CHECKSUMS_P4
#define CHECKSUMS_P4
#include <core.p4>
#include <v1model.p4>
#include "headers.p4"
/*************************************************************************
************* C H E C K S U M V E R I F I C A T I O N *************
*************************************************************************/
control MyVerifyChecksum(inout headers hdr, inout metadata meta) {
apply {}
}
/*************************************************************************
************** C H E C K S U M C O M P U T A T I O N **************
*************************************************************************/
control MyComputeChecksum(inout headers hdr, inout metadata meta) {
apply {
update_checksum_with_payload(meta.do_cksum,
{
hdr.ipv6.src_addr, /* 128 */
hdr.ipv6.dst_addr, /* 128 */
meta.cast_length, /* 32 */
24w0, /* 24 0's */
PROTO_ICMP6 /* 8 */
},
hdr.icmp6.checksum,
HashAlgorithm.csum16
);
}
}
#endif

140
bug1-bool/headers.p4

@ -0,0 +1,140 @@
/* -*- P4_16 -*- */
#ifndef HEADERS_P4
#define HEADERS_P4
#include <core.p4>
#include <v1model.p4>
typedef bit<48> mac_addr_t;
typedef bit<32> ipv4_addr_t;
typedef bit<128> ipv6_addr_t;
typedef bit<9> port_t;
typedef bit<16> mcast_t;
typedef bit<16> task_t;
const bit<16> TYPE_IPV4 = 0x0800;
const bit<16> TYPE_IPV6 = 0x86DD;
const bit<16> TYPE_CPU = 0x4242;
const bit<16> TYPE_DEBUG = 0x2323;
const bit<8> PROTO_ICMP = 1;
const bit<8> PROTO_TCP = 6;
const bit<8> PROTO_UDP = 17;
const bit<8> PROTO_ICMP6 = 58;
const bit<8> TCP_SEQ_LEN = 4;
const bit<8> ICMP6_ECHO_REQUEST = 128;
const bit<8> ICMP6_ECHO_REPLY = 129;
const bit<8> ICMP6_NS = 135;
const bit<8> ICMP6_NA = 136;
const task_t TASK_ICMP6_NS = 1;
const task_t TASK_ICMP6_GENERAL = 2;
const task_t TASK_DEBUG = 3;
const task_t TASK_ICMP6_REPLY = 4;
header ethernet_t {
mac_addr_t dst_addr;
mac_addr_t src_addr;
bit<16> ethertype;
}
header ipv4_t {
bit<4> version;
bit<4> ihl;
bit<6> diff_serv;
bit<2> ecn;
bit<16> totalLen;
bit<16> identification;
bit<3> flags;
bit<13> fragOffset;
bit<8> ttl;
bit<8> protocol;
bit<16> hdrChecksum;
ipv4_addr_t src_addr;
ipv4_addr_t dst_addr;
}
/* https://en.wikipedia.org/wiki/IPv6_packet */
header ipv6_t {
bit<4> version;
bit<8> traffic_class;
bit<20> flow_label;
bit<16> payload_length;
bit<8> next_header;
bit<8> hop_limit;
ipv6_addr_t src_addr;
ipv6_addr_t dst_addr;
}
header tcp_t{
bit<16> src_port;
bit<16> dst_port;
int<32> seqNo;
int<32> ackNo;
bit<4> data_offset;
bit<4> res;
bit<1> cwr;
bit<1> ece;
bit<1> urg;
bit<1> ack;
bit<1> psh;
bit<1> rst;
bit<1> syn;
bit<1> fin;
bit<16> window;
bit<16> checksum;
bit<16> urgentPtr;
}
header udp_t {
bit<16> src_port;
bit<16> dst_port;
bit<16> payload_length;
bit<16> checksum;
}
header icmp6_t {
bit<8> type;
bit<8> code;
bit<16> checksum;
}
header icmp_t {
bit<8> type;
bit<8> code;
bit<16> checksum;
bit<32> rest;
}
header cpu_t {
task_t task;
bit<16> ingress_port;
bit<16> ethertype;
}
struct headers {
ethernet_t ethernet;
ipv4_t ipv4;
ipv6_t ipv6;
tcp_t tcp;
udp_t udp;
icmp6_t icmp6;
icmp_t icmp;
cpu_t cpu;
}
struct metadata {
port_t ingress_port;
task_t task;
bit<16> tcp_length;
bit<32> cast_length;
bool do_cksum;
}
#endif

97
bug1-bool/parsers.p4

@ -0,0 +1,97 @@
/* -*- P4_16 -*- */
#ifndef PARSERS_P4
#define PARSERS_P4
#include <core.p4>
#include <v1model.p4>
#include "headers.p4"
parser MyParser(packet_in packet,
out headers hdr,
inout metadata meta,
inout standard_metadata_t standard_metadata) {
state start {
packet.extract(hdr.ethernet);
transition select(hdr.ethernet.ethertype){
TYPE_IPV4: ipv4;
TYPE_IPV6: ipv6;
default: accept;
}
}
state ipv4 {
packet.extract(hdr.ipv4);
meta.tcp_length = hdr.ipv4.totalLen - 16w20;
transition select(hdr.ipv4.protocol){
PROTO_TCP: tcp;
PROTO_UDP: udp;
PROTO_ICMP: icmp;
default: accept;
}
}
state ipv6 {
packet.extract(hdr.ipv6);
meta.tcp_length = hdr.ipv6.payload_length;
transition select(hdr.ipv6.next_header){
PROTO_TCP: tcp;
PROTO_UDP: udp;
PROTO_ICMP6: icmp6;
default: accept;
}
}
/* Leaf */
state tcp {
packet.extract(hdr.tcp);
transition accept;
}
state udp {
packet.extract(hdr.udp);
transition accept;
}
state icmp6 {
packet.extract(hdr.icmp6);
transition accept;
}
state icmp {
packet.extract(hdr.icmp);
transition accept;
}
}
/*************************************************************************
************************ D E P A R S E R *******************************
*************************************************************************/
control MyDeparser(packet_out packet, in headers hdr) {
apply {
/* always */
packet.emit(hdr.ethernet);
/* only if information is sent to the controller */
packet.emit(hdr.cpu);
/* either */
packet.emit(hdr.ipv4);
packet.emit(hdr.ipv6);
/* either */
packet.emit(hdr.tcp);
packet.emit(hdr.udp);
packet.emit(hdr.icmp);
packet.emit(hdr.icmp6);
}
}
#endif

14
bug1-bool/settings.p4

@ -0,0 +1,14 @@
/* -*- P4_16 -*- */
/* table sizes, register widths, and such */
#ifndef SETTINGS_P4
#define SETTINGS_P4
#include <core.p4>
#include <v1model.p4>
#define THE_ANSWER_TO_LIFE_THE_UNIVERSE_AND_EVERYTHING 42 /* Important constant */
#define ROUTING_TABLE_SIZE 64 /* maximum routes per protocol */
#define ADDRESS_TABLE_SIZE 64 /* maximum number of addresses per protocol */
#define NDP_TABLE_SIZE 64 /* maximum number of multicast groups */
#endif

256
bug1-bool/static-mapping.p4

@ -0,0 +1,256 @@
/* -*- P4_16 -*- */
#include <core.p4>
#include <v1model.p4>
#include "headers.p4"
#include "parsers.p4"
#include "checksums.p4"
#include "settings.p4"
/*************************************************************************
************** I N G R E S S P R O C E S S I N G *******************
*************************************************************************/
control MyIngress(inout headers hdr,
inout metadata meta,
inout standard_metadata_t standard_metadata) {
/********************** ACTIONS ***********************************/
action drop() {
mark_to_drop();
}
action set_egress_port (port_t out_port) {
standard_metadata.egress_spec = out_port;
}
action controller_debug() {
meta.task = TASK_DEBUG;
meta.ingress_port = standard_metadata.ingress_port;
clone3(CloneType.I2E, 100, meta);
}
action controller_reply(task_t task) {
meta.task = task;
meta.ingress_port = standard_metadata.ingress_port;
clone3(CloneType.I2E, 100, meta);
}
action multicast_pkg(mcast_t mcast_grp) { /* Output PKG on correct ports (plural) */
standard_metadata.mcast_grp = mcast_grp;
}
action icmp6_neighbor_solicitation(ipv6_addr_t addr) {
/* egress = ingress */
standard_metadata.egress_spec = standard_metadata.ingress_port;
hdr.ipv6.dst_addr = hdr.ipv6.src_addr;
hdr.ipv6.src_addr = addr;
hdr.icmp6.type = ICMP6_NA;
}
action icmp6_echo_reply() {
mac_addr_t mac_tmp = hdr.ethernet.dst_addr;
hdr.ethernet.dst_addr = hdr.ethernet.src_addr;
hdr.ethernet.src_addr = mac_tmp;
ipv6_addr_t addr_tmp = hdr.ipv6.dst_addr;
hdr.ipv6.dst_addr = hdr.ipv6.src_addr;
hdr.ipv6.src_addr = addr_tmp;
hdr.icmp6.type = ICMP6_ECHO_REPLY;
meta.do_cksum = true;
meta.cast_length = (bit<32>) hdr.ipv6.payload_length;
}
/* this needs SESSIONS!!
- icmp6: (src addr, dst addr, ID??, )
- tcp: (src port, dst port, dst_addr, src addr)
- udp: (src port, dst port, dst_addr, src addr)
*/
// action nat64_static(ipv4_addr_t nataddr, ipv6_addr_t nat64_prefix) {
// hdr.ipv4.dst_addr = hdr.ipv6.dst_addr - nat64_prefix;
// hdr.ipv4.dst_addr = hdr.ipv6.dst_addr - nat64_prefix;
// }
/********************** Reply to NDP for US ***********************************/
table ndp_answer {
key = {
hdr.ipv6.dst_addr: exact; /* our multicast embedded mac address */
hdr.icmp6.type: exact;
}
actions = {
controller_debug;
icmp6_neighbor_solicitation;
NoAction;
}
size = NDP_TABLE_SIZE;
default_action = NoAction;
}
/********************** debugging / general support ***********************************/
table port2mcast {
key = {
standard_metadata.ingress_port : exact;
}
actions = {
multicast_pkg;
controller_debug;
NoAction;
}
size = NDP_TABLE_SIZE;
default_action = NoAction;
// default_action = controller_debug;
}
/* Handle multicast registration of NDP */
table addr2mcast {
key = {
hdr.ipv6.dst_addr: exact;
}
actions = {
multicast_pkg;
controller_debug;
NoAction;
}
size = NDP_TABLE_SIZE;
default_action = NoAction;
// default_action = controller_debug;
}
/********************** NDP support ***********************************/
table ndp {
key = {
hdr.ipv6.dst_addr: lpm;
standard_metadata.ingress_port : exact;
}
actions = {
multicast_pkg;
controller_debug;
NoAction;
}
size = NDP_TABLE_SIZE;
// default_action = NoAction;
default_action = controller_debug;
}
/********************** ADDRESS TABLES ***********************************/
action icmp6_answer() {
if(hdr.icmp6.isValid()) {
if(hdr.icmp6.code == ICMP6_ECHO_REQUEST) {
ipv6_addr_t tmp = hdr.ipv6.src_addr;
hdr.ipv6.src_addr = hdr.ipv6.dst_addr;
hdr.ipv6.dst_addr = tmp;
hdr.icmp6.code = ICMP6_ECHO_REPLY;
}
}
/* do something:
- change src/dst
- change type
*/
}
/********************** ROUTING (egress definiton) TABLES ***********************************/
table v6_addresses {
key = {
hdr.ipv6.dst_addr: exact;
}
actions = {
controller_debug;
controller_reply;
icmp6_echo_reply;
NoAction;
}
size = ADDRESS_TABLE_SIZE;
default_action = NoAction;
}
table v6_networks {
key = {
hdr.ipv6.dst_addr: lpm;
}
actions = {
set_egress_port;
controller_debug;
controller_reply;
NoAction;
}
size = ROUTING_TABLE_SIZE;
default_action = NoAction;
}
table v4_networks {
key = {
hdr.ipv4.dst_addr: lpm;
}
actions = {
set_egress_port;
NoAction;
}
size = ROUTING_TABLE_SIZE;
default_action = NoAction;
}
/********************** APPLYING TABLES ***********************************/
apply {
if(hdr.ipv6.isValid()) {
/* FIXME: structure / use .hit to do logic */
// ndp_answer.apply();
//ndp.apply(); /* flood or if it is us - answer */
v6_addresses.apply();
v6_networks.apply();
}
if(hdr.ipv4.isValid()) {
v4_networks.apply();
}
}
}
/*************************************************************************
**************** E G R E S S P R O C E S S I N G *******************
*************************************************************************/
control MyEgress(inout headers hdr,
inout metadata meta,
inout standard_metadata_t standard_metadata) {
apply {
// ingress clone
if (standard_metadata.instance_type == 1){
hdr.cpu.setValid();
hdr.cpu.task = meta.task;
hdr.cpu.ethertype = hdr.ethernet.ethertype;
hdr.cpu.ingress_port = (bit<16>)meta.ingress_port;
hdr.ethernet.ethertype = TYPE_CPU;
}
}
}
/*************************************************************************
*********************** S W I T C H *******************************
*************************************************************************/
V1Switch(
MyParser(),
MyVerifyChecksum(),
MyIngress(),
MyEgress(),
MyComputeChecksum(),
MyDeparser()
) main;
// truncate((bit<32>)22); //ether+cpu header

2
p4app/bug1-bool.json

@ -1,5 +1,5 @@
{
"program": "../p4src/bug1-bool.p4",
"program": "../bug1-bool/static-mapping.p4",
"switch": "simple_switch",
"compiler": "p4c",
"options": "--target bmv2 --arch v1model --std p4-16",

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