124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
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// Based on the net.h file from the AVRlib library by Pascal Stang.
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// Author: Guido Socher
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// Copyright: GPL V2
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//
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// For AVRlib See http://www.procyonengineering.com/
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// Used with explicit permission of Pascal Stang.
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//
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// 2010-05-20 <jc@wippler.nl>
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// notation: _P = position of a field
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// _V = value of a field
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#ifndef NET_H
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#define NET_H
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// ******* ETH *******
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#define ETH_HEADER_LEN 14
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// values of certain bytes:
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#define ETHTYPE_ARP_H_V 0x08
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#define ETHTYPE_ARP_L_V 0x06
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#define ETHTYPE_IP_H_V 0x08
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#define ETHTYPE_IP_L_V 0x00
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// byte positions in the ethernet frame:
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//
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// Ethernet type field (2bytes):
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#define ETH_TYPE_H_P 12
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#define ETH_TYPE_L_P 13
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//
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#define ETH_DST_MAC 0
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#define ETH_SRC_MAC 6
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// ******* ARP *******
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#define ETH_ARP_OPCODE_REPLY_H_V 0x0
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#define ETH_ARP_OPCODE_REPLY_L_V 0x02
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#define ETH_ARP_OPCODE_REQ_H_V 0x0
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#define ETH_ARP_OPCODE_REQ_L_V 0x01
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// start of arp header:
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#define ETH_ARP_P 0xe
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//
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#define ETHTYPE_ARP_L_V 0x06
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// arp.dst.ip
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#define ETH_ARP_DST_IP_P 0x26
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// arp.opcode
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#define ETH_ARP_OPCODE_H_P 0x14
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#define ETH_ARP_OPCODE_L_P 0x15
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// arp.src.mac
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#define ETH_ARP_SRC_MAC_P 0x16
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#define ETH_ARP_SRC_IP_P 0x1c
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#define ETH_ARP_DST_MAC_P 0x20
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#define ETH_ARP_DST_IP_P 0x26
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// ******* IP *******
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#define IP_HEADER_LEN 20
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// ip.src
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#define IP_SRC_P 0x1a
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#define IP_DST_P 0x1e
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#define IP_HEADER_LEN_VER_P 0xe
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#define IP_CHECKSUM_P 0x18
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#define IP_TTL_P 0x16
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#define IP_FLAGS_P 0x14
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#define IP_P 0xe
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#define IP_TOTLEN_H_P 0x10
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#define IP_TOTLEN_L_P 0x11
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#define IP_PROTO_P 0x17
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#define IP_PROTO_ICMP_V 1
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#define IP_PROTO_TCP_V 6
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// 17=0x11
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#define IP_PROTO_UDP_V 17
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// ******* ICMP *******
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#define ICMP_TYPE_ECHOREPLY_V 0
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#define ICMP_TYPE_ECHOREQUEST_V 8
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//
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#define ICMP_TYPE_P 0x22
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#define ICMP_CHECKSUM_P 0x24
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#define ICMP_CHECKSUM_H_P 0x24
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#define ICMP_CHECKSUM_L_P 0x25
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#define ICMP_IDENT_H_P 0x26
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#define ICMP_IDENT_L_P 0x27
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#define ICMP_DATA_P 0x2a
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// ******* UDP *******
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#define UDP_HEADER_LEN 8
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//
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#define UDP_SRC_PORT_H_P 0x22
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#define UDP_SRC_PORT_L_P 0x23
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#define UDP_DST_PORT_H_P 0x24
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#define UDP_DST_PORT_L_P 0x25
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//
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#define UDP_LEN_H_P 0x26
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#define UDP_LEN_L_P 0x27
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#define UDP_CHECKSUM_H_P 0x28
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#define UDP_CHECKSUM_L_P 0x29
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#define UDP_DATA_P 0x2a
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// ******* TCP *******
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#define TCP_SRC_PORT_H_P 0x22
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#define TCP_SRC_PORT_L_P 0x23
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#define TCP_DST_PORT_H_P 0x24
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#define TCP_DST_PORT_L_P 0x25
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// the tcp seq number is 4 bytes 0x26-0x29
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#define TCP_SEQ_H_P 0x26
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#define TCP_SEQACK_H_P 0x2a
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// flags: SYN=2
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#define TCP_FLAGS_P 0x2f
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#define TCP_FLAGS_SYN_V 2
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#define TCP_FLAGS_FIN_V 1
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#define TCP_FLAGS_RST_V 4
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#define TCP_FLAGS_PUSH_V 8
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#define TCP_FLAGS_SYNACK_V 0x12
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#define TCP_FLAGS_ACK_V 0x10
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#define TCP_FLAGS_PSHACK_V 0x18
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// plain len without the options:
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#define TCP_HEADER_LEN_PLAIN 20
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#define TCP_HEADER_LEN_P 0x2e
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#define TCP_WIN_SIZE 0x30
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#define TCP_CHECKSUM_H_P 0x32
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#define TCP_CHECKSUM_L_P 0x33
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#define TCP_OPTIONS_P 0x36
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//
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#endif
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