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13 changes: 8 additions & 5 deletions backends/dpdk/dpdkArch.h
Original file line number Diff line number Diff line change
Expand Up @@ -702,7 +702,8 @@ class BreakLogicalExpressionParenthesis : public Transform {
} else if (!land->left->is<IR::LOr>() && !land->left->is<IR::Equ>() &&
!land->left->is<IR::Neq>() && !land->left->is<IR::Leq>() &&
!land->left->is<IR::Geq>() && !land->left->is<IR::Lss>() &&
!land->left->is<IR::Grt>() && !land->left->is<IR::MethodCallExpression>() &&
!land->left->is<IR::Grt>() && !land->left->is<IR::LNot>() &&
!land->left->is<IR::MethodCallExpression>() &&
!land->left->is<IR::PathExpression>() && !land->left->is<IR::Member>()) {
BUG("Logical Expression Unroll pass failed");
}
Expand All @@ -712,9 +713,10 @@ class BreakLogicalExpressionParenthesis : public Transform {
if (auto lor2 = lor->left->to<IR::LOr>()) {
auto sub = new IR::LOr(lor2->right, lor->right);
return new IR::LOr(lor2->left, sub);
} else if (!lor->left->is<IR::LOr>() && !lor->left->is<IR::Equ>() &&
} else if (!lor->left->is<IR::LAnd>() && !lor->left->is<IR::Equ>() &&
!lor->left->is<IR::Neq>() && !lor->left->is<IR::Lss>() &&
!lor->left->is<IR::Grt>() && !lor->left->is<IR::MethodCallExpression>() &&
!lor->left->is<IR::Grt>() && !lor->left->is<IR::LNot>() &&
!lor->left->is<IR::MethodCallExpression>() &&
!lor->left->is<IR::PathExpression>() && !lor->left->is<IR::Member>()) {
BUG("Logical Expression Unroll pass failed");
}
Expand All @@ -729,8 +731,9 @@ class BreakLogicalExpressionParenthesis : public Transform {
class SwapSimpleExpressionToFrontOfLogicalExpression : public Transform {
bool is_simple(const IR::Node *n) {
if (n->is<IR::Equ>() || n->is<IR::Neq>() || n->is<IR::Lss>() || n->is<IR::Grt>() ||
n->is<IR::Geq>() || n->is<IR::Leq>() || n->is<IR::MethodCallExpression>() ||
n->is<IR::PathExpression>() || n->is<IR::Member>()) {
n->is<IR::Geq>() || n->is<IR::Leq>() || n->is<IR::LNot>() ||
n->is<IR::MethodCallExpression>() || n->is<IR::PathExpression>() ||
n->is<IR::Member>()) {
return true;
} else if (!n->is<IR::LAnd>() && !n->is<IR::LOr>()) {
BUG("Logical Expression Unroll pass failed");
Expand Down
142 changes: 142 additions & 0 deletions testdata/p4_16_samples/pna-example-logical-operations.p4
Original file line number Diff line number Diff line change
@@ -0,0 +1,142 @@
/*
Copyright 2022 Intel Corporation

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 <core.p4>
#include "pna.p4"


typedef bit<48> EthernetAddress;

header ethernet_t {
EthernetAddress dstAddr;
EthernetAddress srcAddr;
bit<16> etherType;
}

header ipv4_t {
bit<4> version;
bit<4> ihl;
bit<8> diffserv;
bit<16> totalLen;
bit<16> identification;
bit<3> flags;
bit<13> fragOffset;
bit<8> ttl;
bit<8> protocol;
bit<16> hdrChecksum;
bit<32> srcAddr;
bit<32> dstAddr;
}

header udp_t {
bit<16> src_port;
bit<16> dst_port;
bit<16> length;
bit<16> checksum;
}

struct empty_metadata_t {
}

struct main_metadata_t {
bool flag;
// empty for this skeleton
}

// User-defined struct containing all of those headers parsed in the
// main parser.
struct headers_t {
ethernet_t ethernet;
ipv4_t ipv4;
udp_t udp;
}

control PreControlImpl(
in headers_t hdr,
inout main_metadata_t meta,
in pna_pre_input_metadata_t istd,
inout pna_pre_output_metadata_t ostd)
{
apply {
}
}

parser MainParserImpl(
packet_in pkt,
out headers_t hdr,
inout main_metadata_t main_meta,
in pna_main_parser_input_metadata_t istd)
{
state start {
pkt.extract(hdr.ethernet);
transition select(hdr.ethernet.etherType) {
0x0800: parse_ipv4;
default: accept;
}
}
state parse_ipv4 {
pkt.extract(hdr.ipv4);
transition parse_udp;
}
state parse_udp {
pkt.extract(hdr.udp);
transition accept;
}
}

control MainControlImpl(
inout headers_t hdr, // from main parser
inout main_metadata_t user_meta, // from main parser, to "next block"
in pna_main_input_metadata_t istd,
inout pna_main_output_metadata_t ostd)
{
apply {
if (hdr.ipv4.isValid() || !user_meta.flag) {
hdr.ipv4.ttl = hdr.ipv4.ttl + 1;
recirculate();
}
if (!hdr.udp.isValid() && user_meta.flag) {
hdr.udp.setValid();
hdr.udp.src_port = hdr.udp.src_port + 1;
recirculate();
}
}
}

control MainDeparserImpl(
packet_out pkt,
in headers_t hdr, // from main control
in main_metadata_t user_meta, // from main control
in pna_main_output_metadata_t ostd)
{
apply {
pkt.emit(hdr.ethernet);
pkt.emit(hdr.ipv4);
pkt.emit(hdr.udp);
}
}

// BEGIN:Package_Instantiation_Example
PNA_NIC(
MainParserImpl(),
PreControlImpl(),
MainControlImpl(),
MainDeparserImpl()
// Hoping to make this optional parameter later, but not supported
// by p4c yet.
//, PreParserImpl()
) main;
// END:Package_Instantiation_Example
Original file line number Diff line number Diff line change
@@ -0,0 +1,90 @@
#include <core.p4>
#include <pna.p4>

typedef bit<48> EthernetAddress;
header ethernet_t {
EthernetAddress dstAddr;
EthernetAddress srcAddr;
bit<16> etherType;
}

header ipv4_t {
bit<4> version;
bit<4> ihl;
bit<8> diffserv;
bit<16> totalLen;
bit<16> identification;
bit<3> flags;
bit<13> fragOffset;
bit<8> ttl;
bit<8> protocol;
bit<16> hdrChecksum;
bit<32> srcAddr;
bit<32> dstAddr;
}

header udp_t {
bit<16> src_port;
bit<16> dst_port;
bit<16> length;
bit<16> checksum;
}

struct empty_metadata_t {
}

struct main_metadata_t {
}

struct headers_t {
ethernet_t ethernet;
ipv4_t ipv4;
udp_t udp;
}

control PreControlImpl(in headers_t hdr, inout main_metadata_t meta, in pna_pre_input_metadata_t istd, inout pna_pre_output_metadata_t ostd) {
apply {
}
}

parser MainParserImpl(packet_in pkt, out headers_t hdr, inout main_metadata_t main_meta, in pna_main_parser_input_metadata_t istd) {
state start {
pkt.extract<ethernet_t>(hdr.ethernet);
transition select(hdr.ethernet.etherType) {
16w0x800: parse_ipv4;
default: accept;
}
}
state parse_ipv4 {
pkt.extract<ipv4_t>(hdr.ipv4);
transition parse_udp;
}
state parse_udp {
pkt.extract<udp_t>(hdr.udp);
transition accept;
}
}

control MainControlImpl(inout headers_t hdr, inout main_metadata_t user_meta, in pna_main_input_metadata_t istd, inout pna_main_output_metadata_t ostd) {
apply {
if (hdr.ipv4.isValid() || istd.pass != (PassNumber_t)3w0) {
hdr.ipv4.ttl = hdr.ipv4.ttl + 8w1;
recirculate();
}
if (!hdr.udp.isValid() && istd.pass == (PassNumber_t)3w4) {
hdr.udp.setValid();
hdr.udp.src_port = hdr.udp.src_port + 16w1;
recirculate();
}
}
}

control MainDeparserImpl(packet_out pkt, in headers_t hdr, in main_metadata_t user_meta, in pna_main_output_metadata_t ostd) {
apply {
pkt.emit<ethernet_t>(hdr.ethernet);
pkt.emit<ipv4_t>(hdr.ipv4);
pkt.emit<udp_t>(hdr.udp);
}
}

PNA_NIC<headers_t, main_metadata_t, headers_t, main_metadata_t>(MainParserImpl(), PreControlImpl(), MainControlImpl(), MainDeparserImpl()) main;
Original file line number Diff line number Diff line change
@@ -0,0 +1,87 @@
#include <core.p4>
#include <pna.p4>

typedef bit<48> EthernetAddress;
header ethernet_t {
EthernetAddress dstAddr;
EthernetAddress srcAddr;
bit<16> etherType;
}

header ipv4_t {
bit<4> version;
bit<4> ihl;
bit<8> diffserv;
bit<16> totalLen;
bit<16> identification;
bit<3> flags;
bit<13> fragOffset;
bit<8> ttl;
bit<8> protocol;
bit<16> hdrChecksum;
bit<32> srcAddr;
bit<32> dstAddr;
}

header udp_t {
bit<16> src_port;
bit<16> dst_port;
bit<16> length;
bit<16> checksum;
}

struct empty_metadata_t {
}

struct main_metadata_t {
}

struct headers_t {
ethernet_t ethernet;
ipv4_t ipv4;
udp_t udp;
}

control PreControlImpl(in headers_t hdr, inout main_metadata_t meta, in pna_pre_input_metadata_t istd, inout pna_pre_output_metadata_t ostd) {
apply {
}
}

parser MainParserImpl(packet_in pkt, out headers_t hdr, inout main_metadata_t main_meta, in pna_main_parser_input_metadata_t istd) {
state start {
pkt.extract<ethernet_t>(hdr.ethernet);
transition select(hdr.ethernet.etherType) {
16w0x800: parse_ipv4;
default: accept;
}
}
state parse_ipv4 {
pkt.extract<ipv4_t>(hdr.ipv4);
pkt.extract<udp_t>(hdr.udp);
transition accept;
}
}

control MainControlImpl(inout headers_t hdr, inout main_metadata_t user_meta, in pna_main_input_metadata_t istd, inout pna_main_output_metadata_t ostd) {
apply {
if (hdr.ipv4.isValid() || istd.pass != (PassNumber_t)3w0) {
hdr.ipv4.ttl = hdr.ipv4.ttl + 8w1;
recirculate();
}
if (!hdr.udp.isValid() && istd.pass == (PassNumber_t)3w4) {
hdr.udp.setValid();
hdr.udp.src_port = hdr.udp.src_port + 16w1;
recirculate();
}
}
}

control MainDeparserImpl(packet_out pkt, in headers_t hdr, in main_metadata_t user_meta, in pna_main_output_metadata_t ostd) {
apply {
pkt.emit<ethernet_t>(hdr.ethernet);
pkt.emit<ipv4_t>(hdr.ipv4);
pkt.emit<udp_t>(hdr.udp);
}
}

PNA_NIC<headers_t, main_metadata_t, headers_t, main_metadata_t>(MainParserImpl(), PreControlImpl(), MainControlImpl(), MainDeparserImpl()) main;
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