Yi Tseng | 2162993 | 2017-06-06 11:17:43 -0700 | [diff] [blame] | 1 | #ifndef PARSERS |
| 2 | #define PARSERS |
| 3 | #include "headers.p4" |
Yi Tseng | 2162993 | 2017-06-06 11:17:43 -0700 | [diff] [blame] | 4 | |
Carmelo Cascone | 837e645 | 2017-07-19 20:35:22 -0400 | [diff] [blame] | 5 | parser ParserImpl(packet_in packet, out headers_t hdr, inout metadata_t meta, |
| 6 | inout standard_metadata_t standard_metadata) { |
Yi Tseng | 2162993 | 2017-06-06 11:17:43 -0700 | [diff] [blame] | 7 | |
Carmelo Cascone | 837e645 | 2017-07-19 20:35:22 -0400 | [diff] [blame] | 8 | state parse_packet_out { |
| 9 | packet.extract(hdr.packet_out); |
| 10 | transition parse_ethernet; |
| 11 | } |
| 12 | |
Yi Tseng | 2162993 | 2017-06-06 11:17:43 -0700 | [diff] [blame] | 13 | state parse_ethernet { |
| 14 | packet.extract(hdr.ethernet); |
| 15 | transition select(hdr.ethernet.etherType) { |
| 16 | ETH_TYPE_IPV4: parse_ipv4; |
| 17 | default: accept; |
| 18 | } |
| 19 | } |
| 20 | |
| 21 | state parse_ipv4 { |
| 22 | packet.extract(hdr.ipv4); |
| 23 | transition select(hdr.ipv4.protocol) { |
| 24 | IP_TYPE_TCP: parse_tcp; |
| 25 | IP_TYPE_UDP: parse_udp; |
| 26 | default: accept; |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | state parse_tcp { |
| 31 | packet.extract(hdr.tcp); |
| 32 | transition accept; |
| 33 | } |
| 34 | |
| 35 | state parse_udp { |
| 36 | packet.extract(hdr.udp); |
| 37 | transition accept; |
| 38 | } |
| 39 | |
| 40 | state start { |
Carmelo Cascone | 837e645 | 2017-07-19 20:35:22 -0400 | [diff] [blame] | 41 | transition select(standard_metadata.ingress_port) { |
| 42 | CPU_PORT: parse_packet_out; |
| 43 | default: parse_ethernet; |
| 44 | } |
Yi Tseng | 2162993 | 2017-06-06 11:17:43 -0700 | [diff] [blame] | 45 | } |
| 46 | } |
| 47 | |
Carmelo Cascone | 837e645 | 2017-07-19 20:35:22 -0400 | [diff] [blame] | 48 | control DeparserImpl(packet_out packet, in headers_t hdr) { |
Yi Tseng | 2162993 | 2017-06-06 11:17:43 -0700 | [diff] [blame] | 49 | apply { |
Carmelo Cascone | 837e645 | 2017-07-19 20:35:22 -0400 | [diff] [blame] | 50 | packet.emit(hdr.packet_in); |
Yi Tseng | 2162993 | 2017-06-06 11:17:43 -0700 | [diff] [blame] | 51 | packet.emit(hdr.ethernet); |
| 52 | packet.emit(hdr.ipv4); |
| 53 | packet.emit(hdr.udp); |
| 54 | packet.emit(hdr.tcp); |
| 55 | } |
| 56 | } |
| 57 | #endif |