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_
20 #include <packed_section_start.h>
22 #define ETHER_ADDR_LEN 6
23 #define ETHER_TYPE_LEN 2
24 #define ETHER_CRC_LEN 4
25 #define ETHER_HDR_LEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN)
26 #define ETHER_MIN_LEN 64
27 #define ETHER_MIN_DATA 46
28 #define ETHER_MAX_LEN 1518
29 #define ETHER_MAX_DATA 1500
31 #define ETHER_TYPE_MIN 0x0600
32 #define ETHER_TYPE_IP 0x0800
33 #define ETHER_TYPE_ARP 0x0806
34 #define ETHER_TYPE_8021Q 0x8100
35 #define ETHER_TYPE_BRCM 0x886c
36 #define ETHER_TYPE_802_1X 0x888e
37 #define ETHER_TYPE_802_1X_PREAUTH 0x88c7
39 #define ETHER_DEST_OFFSET (0 * ETHER_ADDR_LEN)
40 #define ETHER_SRC_OFFSET (1 * ETHER_ADDR_LEN)
41 #define ETHER_TYPE_OFFSET (2 * ETHER_ADDR_LEN)
43 #define ETHER_IS_VALID_LEN(foo) \
44 ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
46 #define ETHER_FILL_MCAST_ADDR_FROM_IP(ea, mgrp_ip) { \
47 ((u8 *)ea)[0] = 0x01; \
48 ((u8 *)ea)[1] = 0x00; \
49 ((u8 *)ea)[2] = 0x5e; \
50 ((u8 *)ea)[3] = ((mgrp_ip) >> 16) & 0x7f; \
51 ((u8 *)ea)[4] = ((mgrp_ip) >> 8) & 0xff; \
52 ((u8 *)ea)[5] = ((mgrp_ip) >> 0) & 0xff; \
55 BWL_PRE_PACKED_STRUCT struct ether_header {
56 u8 ether_dhost[ETHER_ADDR_LEN];
57 u8 ether_shost[ETHER_ADDR_LEN];
59 } BWL_POST_PACKED_STRUCT;
61 BWL_PRE_PACKED_STRUCT struct ether_addr {
62 u8 octet[ETHER_ADDR_LEN];
63 } BWL_POST_PACKED_STRUCT;
65 #define ETHER_SET_LOCALADDR(ea) (((u8 *)(ea))[0] = (((u8 *)(ea))[0] | 2))
66 #define ETHER_IS_LOCALADDR(ea) (((u8 *)(ea))[0] & 2)
67 #define ETHER_CLR_LOCALADDR(ea) (((u8 *)(ea))[0] = \
68 (((u8 *)(ea))[0] & 0xd))
69 #define ETHER_TOGGLE_LOCALADDR(ea) (((u8 *)(ea))[0] = \
70 (((u8 *)(ea))[0] ^ 2))
72 #define ETHER_SET_UNICAST(ea) (((u8 *)(ea))[0] = (((u8 *)(ea))[0] & ~1))
74 #define ETHER_ISMULTI(ea) (((const u8 *)(ea))[0] & 1)
76 #define ether_cmp(a, b) (!(((short *)a)[0] == ((short *)b)[0]) | \
77 !(((short *)a)[1] == ((short *)b)[1]) | \
78 !(((short *)a)[2] == ((short *)b)[2]))
80 #define ether_copy(s, d) { \
81 ((short *)d)[0] = ((short *)s)[0]; \
82 ((short *)d)[1] = ((short *)s)[1]; \
83 ((short *)d)[2] = ((short *)s)[2]; }
85 static const struct ether_addr ether_bcast = { {255, 255, 255, 255, 255, 255} };
86 static const struct ether_addr ether_null = { {0, 0, 0, 0, 0, 0} };
88 #define ETHER_ISBCAST(ea) ((((u8 *)(ea))[0] & \
93 ((u8 *)(ea))[5]) == 0xff)
94 #define ETHER_ISNULLADDR(ea) ((((u8 *)(ea))[0] | \
99 ((u8 *)(ea))[5]) == 0)
101 #define ETHER_MOVE_HDR(d, s) \
103 struct ether_header t; \
104 t = *(struct ether_header *)(s); \
105 *(struct ether_header *)(d) = t; \
108 #include <packed_section_end.h>
110 #endif /* _NET_ETHERNET_H_ */