master-thesis/p4src/static-mapping.p4
2019-03-06 17:37:30 +01:00

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/* -*- 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 = 1;
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