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98 lines
2.1 KiB
98 lines
2.1 KiB
/* -*- P4_16 -*- */ |
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#ifndef PARSERS_P4 |
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#define PARSERS_P4 |
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/* to be included into the parser block */ |
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state start { |
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meta.chk_icmp = 0; |
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meta.chk_icmp6 = 0; |
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meta.chk_icmp6_na_ns = 0; |
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meta.chk_ipv4 = 0; |
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meta.chk_udp_v6 = 0; |
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meta.chk_udp_v4 = 0; |
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meta.chk_tcp_v6 = 0; |
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meta.chk_tcp_v4 = 0; |
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meta.v4sum = 0; |
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meta.v6sum = 0; |
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meta.headerdiff = 0; |
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#ifdef _SUME_SWITCH_P4_ |
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digest_data.unused = 0; /* avoid compiler warning */ |
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#endif |
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packet.extract(hdr.ethernet); |
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transition select(hdr.ethernet.ethertype){ |
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TYPE_IPV4: ipv4; |
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TYPE_IPV6: ipv6; |
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TYPE_ARP: arp; |
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default: accept; |
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} |
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} |
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state ipv4 { |
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packet.extract(hdr.ipv4); |
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meta.length_without_ip_header = hdr.ipv4.totalLen - 16w20; |
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transition select(hdr.ipv4.protocol){ |
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PROTO_TCP: tcp; |
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PROTO_UDP: udp; |
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PROTO_ICMP: icmp; |
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default: accept; |
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} |
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} |
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state ipv6 { |
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packet.extract(hdr.ipv6); |
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meta.length_without_ip_header = hdr.ipv6.payload_length; |
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transition select(hdr.ipv6.next_header){ |
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PROTO_TCP: tcp; |
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PROTO_UDP: udp; |
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PROTO_ICMP6: icmp6; |
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default: accept; |
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} |
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} |
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state icmp6 { |
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packet.extract(hdr.icmp6); |
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transition select(hdr.icmp6.type) { |
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ICMP6_NS: icmp6_neighbor_solicitation; |
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default: accept; |
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} |
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} |
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state icmp6_neighbor_solicitation { |
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packet.extract(hdr.icmp6_na_ns); |
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/* BUG: This MIGHT fail */ |
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packet.extract(hdr.icmp6_option_link_layer_addr); |
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transition accept; |
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} |
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/* Leaf */ |
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state tcp { |
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packet.extract(hdr.tcp); |
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transition accept; |
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} |
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state udp { |
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packet.extract(hdr.udp); |
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transition accept; |
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} |
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state icmp { |
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packet.extract(hdr.icmp); |
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transition accept; |
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} |
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state arp { |
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packet.extract(hdr.arp); |
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transition accept; |
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} |
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#endif
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