Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2010 Broadcom Corporation |
| 3 | * |
| 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. |
| 7 | * |
| 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. |
| 15 | */ |
| 16 | |
| 17 | #ifndef _NET_ETHERNET_H_ |
| 18 | #define _NET_ETHERNET_H_ |
| 19 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 20 | #include <packed_section_start.h> |
| 21 | |
| 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 |
| 30 | |
| 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 |
| 38 | |
| 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) |
| 42 | |
| 43 | #define ETHER_IS_VALID_LEN(foo) \ |
| 44 | ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN) |
| 45 | |
| 46 | #define ETHER_FILL_MCAST_ADDR_FROM_IP(ea, mgrp_ip) { \ |
Greg Kroah-Hartman | de9bca6 | 2010-10-05 10:23:40 -0700 | [diff] [blame] | 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; \ |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 53 | } |
| 54 | |
| 55 | BWL_PRE_PACKED_STRUCT struct ether_header { |
Greg Kroah-Hartman | de9bca6 | 2010-10-05 10:23:40 -0700 | [diff] [blame] | 56 | u8 ether_dhost[ETHER_ADDR_LEN]; |
| 57 | u8 ether_shost[ETHER_ADDR_LEN]; |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 58 | u16 ether_type; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 59 | } BWL_POST_PACKED_STRUCT; |
| 60 | |
| 61 | BWL_PRE_PACKED_STRUCT struct ether_addr { |
Greg Kroah-Hartman | de9bca6 | 2010-10-05 10:23:40 -0700 | [diff] [blame] | 62 | u8 octet[ETHER_ADDR_LEN]; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 63 | } BWL_POST_PACKED_STRUCT; |
| 64 | |
Greg Kroah-Hartman | de9bca6 | 2010-10-05 10:23:40 -0700 | [diff] [blame] | 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)) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 71 | |
Greg Kroah-Hartman | de9bca6 | 2010-10-05 10:23:40 -0700 | [diff] [blame] | 72 | #define ETHER_SET_UNICAST(ea) (((u8 *)(ea))[0] = (((u8 *)(ea))[0] & ~1)) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 73 | |
Greg Kroah-Hartman | de9bca6 | 2010-10-05 10:23:40 -0700 | [diff] [blame] | 74 | #define ETHER_ISMULTI(ea) (((const u8 *)(ea))[0] & 1) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 75 | |
Jason Cooper | 39dcff3 | 2010-09-14 09:45:41 -0400 | [diff] [blame] | 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])) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 79 | |
| 80 | #define ether_copy(s, d) { \ |
Jason Cooper | 39dcff3 | 2010-09-14 09:45:41 -0400 | [diff] [blame] | 81 | ((short *)d)[0] = ((short *)s)[0]; \ |
| 82 | ((short *)d)[1] = ((short *)s)[1]; \ |
| 83 | ((short *)d)[2] = ((short *)s)[2]; } |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 84 | |
| 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} }; |
| 87 | |
Greg Kroah-Hartman | de9bca6 | 2010-10-05 10:23:40 -0700 | [diff] [blame] | 88 | #define ETHER_ISBCAST(ea) ((((u8 *)(ea))[0] & \ |
| 89 | ((u8 *)(ea))[1] & \ |
| 90 | ((u8 *)(ea))[2] & \ |
| 91 | ((u8 *)(ea))[3] & \ |
| 92 | ((u8 *)(ea))[4] & \ |
| 93 | ((u8 *)(ea))[5]) == 0xff) |
| 94 | #define ETHER_ISNULLADDR(ea) ((((u8 *)(ea))[0] | \ |
| 95 | ((u8 *)(ea))[1] | \ |
| 96 | ((u8 *)(ea))[2] | \ |
| 97 | ((u8 *)(ea))[3] | \ |
| 98 | ((u8 *)(ea))[4] | \ |
| 99 | ((u8 *)(ea))[5]) == 0) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 100 | |
| 101 | #define ETHER_MOVE_HDR(d, s) \ |
| 102 | do { \ |
| 103 | struct ether_header t; \ |
| 104 | t = *(struct ether_header *)(s); \ |
| 105 | *(struct ether_header *)(d) = t; \ |
| 106 | } while (0) |
| 107 | |
| 108 | #include <packed_section_end.h> |
| 109 | |
| 110 | #endif /* _NET_ETHERNET_H_ */ |