master-thesis/p4src/parsers.p4

94 lines
2 KiB
Text
Raw Normal View History

2019-02-21 22:09:03 +00:00
/* -*- P4_16 -*- */
#ifndef PARSERS_P4
#define PARSERS_P4
2019-07-10 20:28:37 +00:00
/* to be included into the parser block */
2019-02-21 22:09:03 +00:00
state start {
meta.chk_icmp = 0;
meta.chk_icmp6 = 0;
2019-03-30 16:01:04 +00:00
meta.chk_icmp6_na_ns = 0;
meta.chk_ipv4 = 0;
meta.chk_udp_v6 = 0;
2019-04-11 08:13:54 +00:00
meta.chk_udp_v4 = 0;
meta.chk_tcp_v6 = 0;
meta.chk_tcp_v4 = 0;
2019-07-10 20:28:37 +00:00
meta.v4sum = 0;
meta.v6sum = 0;
2019-02-21 22:09:03 +00:00
packet.extract(hdr.ethernet);
transition select(hdr.ethernet.ethertype){
TYPE_IPV4: ipv4;
TYPE_IPV6: ipv6;
2019-03-31 14:37:21 +00:00
TYPE_ARP: arp;
2019-02-21 22:09:03 +00:00
default: accept;
}
}
state ipv4 {
packet.extract(hdr.ipv4);
meta.length_without_ip_header = hdr.ipv4.totalLen - 16w20;
2019-02-21 22:09:03 +00:00
transition select(hdr.ipv4.protocol){
2019-02-21 23:01:53 +00:00
PROTO_TCP: tcp;
PROTO_UDP: udp;
PROTO_ICMP: icmp;
2019-02-21 22:09:03 +00:00
default: accept;
}
}
state ipv6 {
packet.extract(hdr.ipv6);
meta.length_without_ip_header = hdr.ipv6.payload_length;
2019-02-21 22:09:03 +00:00
transition select(hdr.ipv6.next_header){
2019-02-21 23:01:53 +00:00
PROTO_TCP: tcp;
PROTO_UDP: udp;
PROTO_ICMP6: icmp6;
2019-02-21 22:09:03 +00:00
default: accept;
}
}
2019-03-21 19:48:56 +00:00
state icmp6 {
packet.extract(hdr.icmp6);
transition select(hdr.icmp6.type) {
2019-03-23 12:33:25 +00:00
ICMP6_NS: icmp6_neighbor_solicitation;
2019-03-21 19:48:56 +00:00
default: accept;
}
}
2019-03-23 12:33:25 +00:00
2019-03-21 19:48:56 +00:00
state icmp6_neighbor_solicitation {
packet.extract(hdr.icmp6_na_ns);
/* BUG: This MIGHT fail */
packet.extract(hdr.icmp6_option_link_layer_addr);
2019-03-23 12:33:25 +00:00
transition accept;
2019-03-23 12:33:25 +00:00
}
2019-03-21 19:48:56 +00:00
2019-02-21 23:01:53 +00:00
/* Leaf */
2019-02-21 22:09:03 +00:00
state tcp {
packet.extract(hdr.tcp);
transition accept;
2019-02-21 22:09:03 +00:00
}
2019-02-21 23:01:53 +00:00
state udp {
packet.extract(hdr.udp);
transition accept;
2019-02-21 23:01:53 +00:00
}
state icmp {
packet.extract(hdr.icmp);
transition accept;
2019-02-21 23:01:53 +00:00
}
2019-03-31 14:37:21 +00:00
state arp {
packet.extract(hdr.arp);
transition accept;
}
2019-02-21 22:09:03 +00:00
#endif