Fix decoding of changed MAC address.
[helenos.git] / uspace / srv / net / ethip / std.h
blob4a71d195929ec18bf5af7dbce568bceb880f062d
1 /*
2 * Copyright (c) 2021 Jiri Svoboda
3 * All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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29 /** @addtogroup ethip
30 * @{
32 /**
33 * @file Ethernet, IP/Ethernet standard definitions
37 #ifndef ETHIP_STD_H_
38 #define ETHIP_STD_H_
40 #include <stdint.h>
42 #define ETH_ADDR_SIZE 6
43 #define IPV4_ADDR_SIZE 4
44 #define ETH_FRAME_MIN_SIZE 60
46 /** Ethernet frame header */
47 typedef struct {
48 /** Destination Address */
49 uint8_t dest[ETH_ADDR_SIZE];
50 /** Source Address */
51 uint8_t src[ETH_ADDR_SIZE];
52 /** Ethertype or Length */
53 uint16_t etype_len;
54 } eth_header_t;
56 /** ARP packet format (for 48-bit MAC addresses and IPv4) */
57 typedef struct {
58 /** Hardware address space */
59 uint16_t hw_addr_space;
60 /** Protocol address space */
61 uint16_t proto_addr_space;
62 /** Hardware address size */
63 uint8_t hw_addr_size;
64 /** Protocol address size */
65 uint8_t proto_addr_size;
66 /** Opcode */
67 uint16_t opcode;
68 /** Sender hardware address */
69 uint8_t sender_hw_addr[ETH_ADDR_SIZE];
70 /** Sender protocol address */
71 uint32_t sender_proto_addr;
72 /** Target hardware address */
73 uint8_t target_hw_addr[ETH_ADDR_SIZE];
74 /** Target protocol address */
75 uint32_t target_proto_addr;
76 } __attribute__((packed)) arp_eth_packet_fmt_t;
78 enum arp_opcode_fmt {
79 AOP_REQUEST = 1,
80 AOP_REPLY = 2
83 enum arp_hw_addr_space {
84 AHRD_ETHERNET = 1
87 /** IP Ethertype */
88 enum ether_type {
89 ETYPE_ARP = 0x0806,
90 ETYPE_IP = 0x0800,
91 ETYPE_IPV6 = 0x86DD
94 #endif
96 /** @}