2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #ifndef _NET_ETHERNET_H_
18 #define _NET_ETHERNET_H_
23 #include <packed_section_start.h>
25 #define ETHER_ADDR_LEN 6
26 #define ETHER_TYPE_LEN 2
27 #define ETHER_CRC_LEN 4
28 #define ETHER_HDR_LEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN)
29 #define ETHER_MIN_LEN 64
30 #define ETHER_MIN_DATA 46
31 #define ETHER_MAX_LEN 1518
32 #define ETHER_MAX_DATA 1500
34 #define ETHER_TYPE_MIN 0x0600
35 #define ETHER_TYPE_IP 0x0800
36 #define ETHER_TYPE_ARP 0x0806
37 #define ETHER_TYPE_8021Q 0x8100
38 #define ETHER_TYPE_BRCM 0x886c
39 #define ETHER_TYPE_802_1X 0x888e
40 #define ETHER_TYPE_802_1X_PREAUTH 0x88c7
42 #define ETHER_DEST_OFFSET (0 * ETHER_ADDR_LEN)
43 #define ETHER_SRC_OFFSET (1 * ETHER_ADDR_LEN)
44 #define ETHER_TYPE_OFFSET (2 * ETHER_ADDR_LEN)
46 #define ETHER_IS_VALID_LEN(foo) \
47 ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
49 #define ETHER_FILL_MCAST_ADDR_FROM_IP(ea, mgrp_ip) { \
50 ((uint8 *)ea)[0] = 0x01; \
51 ((uint8 *)ea)[1] = 0x00; \
52 ((uint8 *)ea)[2] = 0x5e; \
53 ((uint8 *)ea)[3] = ((mgrp_ip) >> 16) & 0x7f; \
54 ((uint8 *)ea)[4] = ((mgrp_ip) >> 8) & 0xff; \
55 ((uint8 *)ea)[5] = ((mgrp_ip) >> 0) & 0xff; \
58 BWL_PRE_PACKED_STRUCT struct ether_header {
59 uint8 ether_dhost[ETHER_ADDR_LEN];
60 uint8 ether_shost[ETHER_ADDR_LEN];
62 } BWL_POST_PACKED_STRUCT;
64 BWL_PRE_PACKED_STRUCT struct ether_addr {
65 uint8 octet[ETHER_ADDR_LEN];
66 } BWL_POST_PACKED_STRUCT;
68 #define ETHER_SET_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] | 2))
69 #define ETHER_IS_LOCALADDR(ea) (((uint8 *)(ea))[0] & 2)
70 #define ETHER_CLR_LOCALADDR(ea) (((uint8 *)(ea))[0] = \
71 (((uint8 *)(ea))[0] & 0xd))
72 #define ETHER_TOGGLE_LOCALADDR(ea) (((uint8 *)(ea))[0] = \
73 (((uint8 *)(ea))[0] ^ 2))
75 #define ETHER_SET_UNICAST(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & ~1))
77 #define ETHER_ISMULTI(ea) (((const uint8 *)(ea))[0] & 1)
79 #define ether_cmp(a, b) (!(((short*)a)[0] == ((short*)b)[0]) | \
80 !(((short*)a)[1] == ((short*)b)[1]) | \
81 !(((short*)a)[2] == ((short*)b)[2]))
83 #define ether_copy(s, d) { \
84 ((short*)d)[0] = ((short*)s)[0]; \
85 ((short*)d)[1] = ((short*)s)[1]; \
86 ((short*)d)[2] = ((short*)s)[2]; }
88 static const struct ether_addr ether_bcast = { {255, 255, 255, 255, 255, 255} };
89 static const struct ether_addr ether_null = { {0, 0, 0, 0, 0, 0} };
91 #define ETHER_ISBCAST(ea) ((((uint8 *)(ea))[0] & \
92 ((uint8 *)(ea))[1] & \
93 ((uint8 *)(ea))[2] & \
94 ((uint8 *)(ea))[3] & \
95 ((uint8 *)(ea))[4] & \
96 ((uint8 *)(ea))[5]) == 0xff)
97 #define ETHER_ISNULLADDR(ea) ((((uint8 *)(ea))[0] | \
98 ((uint8 *)(ea))[1] | \
99 ((uint8 *)(ea))[2] | \
100 ((uint8 *)(ea))[3] | \
101 ((uint8 *)(ea))[4] | \
102 ((uint8 *)(ea))[5]) == 0)
104 #define ETHER_MOVE_HDR(d, s) \
106 struct ether_header t; \
107 t = *(struct ether_header *)(s); \
108 *(struct ether_header *)(d) = t; \
111 #include <packed_section_end.h>
113 #endif /* _NET_ETHERNET_H_ */