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@ -28,12 +28,7 @@
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#pragma pack(1) |
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#define IP_HEADER_SIZE 20 |
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#define IPV6_HEADER_SIZE 40 |
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typedef unsigned char MACADDR [6]; |
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typedef unsigned long IPADDR; |
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typedef unsigned char IPV6ADDR [16]; |
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//-----------------
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// Ethernet address
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@ -62,163 +57,4 @@ typedef struct
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USHORT proto; /* packet type ID field */ |
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} ETH_HEADER, *PETH_HEADER; |
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//----------------
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// ARP packet
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//----------------
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typedef struct |
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{ |
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MACADDR m_MAC_Destination; // Reverse these two
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MACADDR m_MAC_Source; // to answer ARP requests
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USHORT m_Proto; // 0x0806
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# define MAC_ADDR_TYPE 0x0001 |
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USHORT m_MAC_AddressType; // 0x0001
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USHORT m_PROTO_AddressType; // 0x0800
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UCHAR m_MAC_AddressSize; // 0x06
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UCHAR m_PROTO_AddressSize; // 0x04
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# define ARP_REQUEST 0x0001 |
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# define ARP_REPLY 0x0002 |
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USHORT m_ARP_Operation; // 0x0001 for ARP request, 0x0002 for ARP reply
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MACADDR m_ARP_MAC_Source; |
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IPADDR m_ARP_IP_Source; |
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MACADDR m_ARP_MAC_Destination; |
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IPADDR m_ARP_IP_Destination; |
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} |
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ARP_PACKET, *PARP_PACKET; |
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//----------
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// IP Header
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//----------
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typedef struct { |
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# define IPH_GET_VER(v) (((v) >> 4) & 0x0F) |
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# define IPH_GET_LEN(v) (((v) & 0x0F) << 2) |
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UCHAR version_len; |
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UCHAR tos; |
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USHORT tot_len; |
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USHORT id; |
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# define IP_OFFMASK 0x1fff |
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USHORT frag_off; |
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UCHAR ttl; |
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# define IPPROTO_UDP 17 /* UDP protocol */ |
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# define IPPROTO_TCP 6 /* TCP protocol */ |
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# define IPPROTO_ICMP 1 /* ICMP protocol */ |
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# define IPPROTO_IGMP 2 /* IGMP protocol */ |
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UCHAR protocol; |
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USHORT check; |
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ULONG saddr; |
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ULONG daddr; |
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/* The options start here. */ |
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} IPHDR; |
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//-----------
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// UDP header
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//-----------
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typedef struct { |
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USHORT source; |
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USHORT dest; |
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USHORT len; |
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USHORT check; |
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} UDPHDR; |
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//--------------------------
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// TCP header, per RFC 793.
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//--------------------------
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typedef struct { |
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USHORT source; /* source port */ |
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USHORT dest; /* destination port */ |
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ULONG seq; /* sequence number */ |
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ULONG ack_seq; /* acknowledgement number */ |
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# define TCPH_GET_DOFF(d) (((d) & 0xF0) >> 2) |
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UCHAR doff_res; |
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# define TCPH_FIN_MASK (1<<0) |
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# define TCPH_SYN_MASK (1<<1) |
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# define TCPH_RST_MASK (1<<2) |
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# define TCPH_PSH_MASK (1<<3) |
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# define TCPH_ACK_MASK (1<<4) |
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# define TCPH_URG_MASK (1<<5) |
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# define TCPH_ECE_MASK (1<<6) |
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# define TCPH_CWR_MASK (1<<7) |
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UCHAR flags; |
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USHORT window; |
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USHORT check; |
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USHORT urg_ptr; |
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} TCPHDR; |
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#define TCPOPT_EOL 0 |
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#define TCPOPT_NOP 1 |
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#define TCPOPT_MAXSEG 2 |
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#define TCPOLEN_MAXSEG 4 |
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//------------
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// IPv6 Header
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//------------
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typedef struct { |
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UCHAR version_prio; |
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UCHAR flow_lbl[3]; |
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USHORT payload_len; |
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# define IPPROTO_ICMPV6 0x3a /* ICMP protocol v6 */ |
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UCHAR nexthdr; |
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UCHAR hop_limit; |
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IPV6ADDR saddr; |
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IPV6ADDR daddr; |
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} IPV6HDR; |
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//--------------------------------------------
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// IPCMPv6 NS/NA Packets (RFC4443 and RFC4861)
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//--------------------------------------------
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// Neighbor Solictiation - RFC 4861, 4.3
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// (this is just the ICMPv6 part of the packet)
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typedef struct { |
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UCHAR type; |
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# define ICMPV6_TYPE_NS 135 // neighbour solicitation
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UCHAR code; |
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# define ICMPV6_CODE_0 0 // no specific sub-code for NS/NA
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USHORT checksum; |
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ULONG reserved; |
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IPV6ADDR target_addr; |
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} ICMPV6_NS; |
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// Neighbor Advertisement - RFC 4861, 4.4 + 4.6/4.6.1
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// (this is just the ICMPv6 payload)
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typedef struct { |
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UCHAR type; |
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# define ICMPV6_TYPE_NA 136 // neighbour advertisement
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UCHAR code; |
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# define ICMPV6_CODE_0 0 // no specific sub-code for NS/NA
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USHORT checksum; |
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UCHAR rso_bits; // Router(0), Solicited(2), Ovrrd(4)
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UCHAR reserved[3]; |
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IPV6ADDR target_addr; |
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// always include "Target Link-layer Address" option (RFC 4861 4.6.1)
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UCHAR opt_type; |
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#define ICMPV6_OPTION_TLLA 2 |
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UCHAR opt_length; |
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#define ICMPV6_LENGTH_TLLA 1 // multiplied by 8 -> 1 = 8 bytes
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MACADDR target_macaddr; |
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} ICMPV6_NA; |
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// this is the complete packet with Ethernet and IPv6 headers
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typedef struct { |
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ETH_HEADER eth; |
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IPV6HDR ipv6; |
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ICMPV6_NA icmpv6; |
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} ICMPV6_NA_PKT; |
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#pragma pack() |
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Adam Ierymenko
12 years ago