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ALV_Complete.p4
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ALV_Complete.p4
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/*
Fusion of ALV.p4 and Complete.p4
Nik Sultana, UPenn, March 2020
*/
#ifdef FP_ANNOTATE
#include "Flightplan.p4"
extern Landing Point_Alpha();
extern Landing Point_Bravo();
#endif // FP_ANNOTATE
#if !defined(TARGET_BMV2)
#error Currently unsupported target
#endif
#include "targets.h"
#include "EmptyBMDefinitions.p4"
#include "Memcached_extern.p4"
#include "FEC.p4"
#include "FEC_Classify.p4"
#include "Compression.p4"
#define WIDTH_PORT_NUMBER 9
control ALV_Route(inout headers_t hdr, inout booster_metadata_t m, inout metadata_t meta) {
action mac_forward_set_egress(bit<WIDTH_PORT_NUMBER> port) {
meta.egress_spec = port;
}
table mac_forwarding {
key = {
hdr.eth.dst : exact;
}
actions = {
mac_forward_set_egress;
NoAction;
}
}
bit<32> dst_gateway_ipv4 = 0;
action ipv4_forward(bit<32> next_hop, bit<WIDTH_PORT_NUMBER> port) {
meta.egress_spec = port;
dst_gateway_ipv4 = next_hop;
hdr.ipv4.ttl = hdr.ipv4.ttl - 1;
}
table ipv4_forwarding {
key = {
hdr.ipv4.dst : ternary;
}
actions = {
ipv4_forward;
NoAction;
}
}
action arp_lookup_set_addresses(bit<48> mac_address) {
hdr.eth.src = hdr.eth.dst;
hdr.eth.dst = mac_address;
}
table next_hop_arp_lookup {
key = {
dst_gateway_ipv4 : exact;
}
actions = {
arp_lookup_set_addresses;
NoAction;
}
}
apply {
#if 0
if (hdr.eth.isValid()) {
if (mac_forwarding.apply().hit) return;
if (hdr.ipv4.isValid() &&
hdr.ipv4.ttl > 1 &&
ipv4_forwarding.apply().hit) {
if (next_hop_arp_lookup.apply().hit) return;
}
}
drop();
#endif // 0
bit<1> processed = 0;
if (hdr.eth.isValid()) {
if (mac_forwarding.apply().hit) {
processed = 1;
} else if (hdr.ipv4.isValid() &&
hdr.ipv4.ttl > 1 &&
ipv4_forwarding.apply().hit) {
if (next_hop_arp_lookup.apply().hit) {
processed = 1;
}
}
}
if (0 == processed) {
drop();
exit;
}
}
}
parser CompleteParser(packet_in pkt, out headers_t hdr, inout booster_metadata_t m, inout metadata_t meta) {
state start {
FecParser.apply(pkt, hdr);
transition accept;
}
}
#define FEC_BOOSTER
#define COMPRESSION_BOOSTER
#define MEMCACHED_BOOSTER
control Crosspod(inout headers_t hdr, inout booster_metadata_t m, inout metadata_t meta) {
bit<1> run_program_ingress = 0;
bit<1> run_program_egress = 0;
action run_Complete_ingress() {
run_program_ingress = 1;
}
table check_run_Complete_ingress {
key = {
meta.ingress_port : exact;
}
actions = {
run_Complete_ingress;
NoAction;
}
}
action run_Complete_egress() {
run_program_egress = 1;
}
table check_run_Complete_egress {
key = {
meta.egress_spec : exact;
}
actions = {
run_Complete_egress;
NoAction;
}
}
#if defined(FEC_BOOSTER)
bit<FEC_K_WIDTH> k = 0;
bit<FEC_H_WIDTH> h = 0;
bit<24> proto_and_port = 0;
FEC_Classify() classification;
FecClassParams() decoder_params;
FecClassParams() encoder_params;
#endif
#if defined(COMPRESSION_BOOSTER)
CompressedLink() ingress_compression;
CompressedLink() egress_compression;
#endif
apply {
bit<1> compressed_link = 0;
bit<1> forward = 0;
check_run_Complete_ingress.apply();
#ifdef FP_ANNOTATE
flyto(Point_Alpha());
#endif // FP_ANNOTATE
if (1 == run_program_ingress) {
#if defined(FEC_BOOSTER)
// If we received an FEC update, then update the table.
bit<1> is_ctrl;
FECController.apply(hdr, meta, is_ctrl);
if (is_ctrl == 1) {
drop();
exit;
}
#endif
#if defined(FEC_BOOSTER)
// If lossy link, then FEC decode.
if (hdr.fec.isValid()) {
decoder_params.apply(hdr.fec.traffic_class, k, h);
hdr.eth.type = hdr.fec.orig_ethertype;
FEC_DECODE(hdr.fec, k, h);
if (hdr.fec.isValid() && hdr.fec.packet_index >= k) {
drop();
exit;
}
hdr.fec.setInvalid();
}
#endif
#if defined(COMPRESSION_BOOSTER)
// If multiplexed link, then header decompress.
ingress_compression.apply(meta.ingress_port, compressed_link);
if (compressed_link == 1) {
header_decompress(forward);
if (forward == 0) {
drop();
exit;
}
}
#endif
// NOTE could move this to the later part of the program.
#if defined(MEMCACHED_BOOSTER)
// If Memcached REQ/RES then pass through the cache.
if (hdr.udp.isValid()) {
if (hdr.udp.dport == 11211 || hdr.udp.sport == 11211) {
memcached(forward);
if (forward == 0) {
drop();
exit;
}
}
}
#endif
}
#ifdef FP_ANNOTATE
flyto(FlightStart());
#endif // FP_ANNOTATE
// NOTE could do the routing step at very beginning, to get clarity on what follows.
ALV_Route.apply(hdr, m, meta);
check_run_Complete_egress.apply();
#ifdef FP_ANNOTATE
flyto(Point_Bravo());
#endif // FP_ANNOTATE
if (1 == run_program_egress) {
#if defined(COMPRESSION_BOOSTER)
compressed_link = 0;
forward = 0;
// If heading out on a multiplexed link, then header compress.
egress_compression.apply(meta.egress_spec, compressed_link);
if (compressed_link == 1) {
header_compress(forward);
if (forward == 0) {
drop();
exit;
}
}
#endif
#if defined(FEC_BOOSTER)
bit<1> faulty = 0;
// If heading out on a lossy link, then FEC encode.
get_port_status(meta.egress_spec, faulty);
if (faulty == 1) {
if (hdr.tcp.isValid()) {
proto_and_port = hdr.ipv4.proto ++ hdr.tcp.dport;
} else if (hdr.udp.isValid()) {
proto_and_port = hdr.ipv4.proto ++ hdr.udp.dport;
} else {
proto_and_port = hdr.ipv4.proto ++ (bit<16>)0;
}
classification.apply(hdr, proto_and_port);
if (hdr.fec.isValid()) {
encoder_params.apply(hdr.fec.traffic_class, k, h);
update_fec_state(hdr.fec.traffic_class, k, h,
hdr.fec.block_index, hdr.fec.packet_index);
hdr.fec.orig_ethertype = hdr.eth.type;
FEC_ENCODE(hdr.fec, k, h);
hdr.eth.type = ETHERTYPE_WHARF;
}
}
#endif
}
#ifdef FP_ANNOTATE
flyto(FlightStart());
#endif // FP_ANNOTATE
}
}
V1Switch(CompleteParser(), NoVerify(), Crosspod(), NoEgress(), ComputeCheck(), FecDeparser()) main;