[net-next-2.6.git] / drivers / staging / brcm80211 / include / proto / ethernet.h

/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _NET_ETHERNET_H_
#define _NET_ETHERNET_H_

#include <packed_section_start.h>

#define	ETHER_ADDR_LEN		6
#define	ETHER_TYPE_LEN		2
#define	ETHER_CRC_LEN		4
#define	ETHER_HDR_LEN		(ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN)
#define	ETHER_MIN_LEN		64
#define	ETHER_MIN_DATA		46
#define	ETHER_MAX_LEN		1518
#define	ETHER_MAX_DATA		1500

#define ETHER_TYPE_MIN		0x0600
#define	ETHER_TYPE_IP		0x0800
#define ETHER_TYPE_ARP		0x0806
#define ETHER_TYPE_8021Q	0x8100
#define	ETHER_TYPE_BRCM		0x886c
#define	ETHER_TYPE_802_1X	0x888e
#define	ETHER_TYPE_802_1X_PREAUTH 0x88c7

#define ETHER_DEST_OFFSET	(0 * ETHER_ADDR_LEN)
#define ETHER_SRC_OFFSET	(1 * ETHER_ADDR_LEN)
#define ETHER_TYPE_OFFSET	(2 * ETHER_ADDR_LEN)

#define	ETHER_IS_VALID_LEN(foo)	\
	((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)

#define ETHER_FILL_MCAST_ADDR_FROM_IP(ea, mgrp_ip) {		\
		((u8 *)ea)[0] = 0x01;			\
		((u8 *)ea)[1] = 0x00;			\
		((u8 *)ea)[2] = 0x5e;			\
		((u8 *)ea)[3] = ((mgrp_ip) >> 16) & 0x7f;	\
		((u8 *)ea)[4] = ((mgrp_ip) >>  8) & 0xff;	\
		((u8 *)ea)[5] = ((mgrp_ip) >>  0) & 0xff;	\
}

BWL_PRE_PACKED_STRUCT struct ether_header {
	u8 ether_dhost[ETHER_ADDR_LEN];
	u8 ether_shost[ETHER_ADDR_LEN];
	u16 ether_type;
} BWL_POST_PACKED_STRUCT;

BWL_PRE_PACKED_STRUCT struct ether_addr {
	u8 octet[ETHER_ADDR_LEN];
} BWL_POST_PACKED_STRUCT;

#define ETHER_SET_LOCALADDR(ea)	(((u8 *)(ea))[0] = (((u8 *)(ea))[0] | 2))
#define ETHER_IS_LOCALADDR(ea) 	(((u8 *)(ea))[0] & 2)
#define ETHER_CLR_LOCALADDR(ea)	(((u8 *)(ea))[0] = \
	(((u8 *)(ea))[0] & 0xd))
#define ETHER_TOGGLE_LOCALADDR(ea)	(((u8 *)(ea))[0] = \
	(((u8 *)(ea))[0] ^ 2))

#define ETHER_SET_UNICAST(ea)	(((u8 *)(ea))[0] = (((u8 *)(ea))[0] & ~1))

#define ETHER_ISMULTI(ea) (((const u8 *)(ea))[0] & 1)

#define	ether_cmp(a, b)	(!(((short *)a)[0] == ((short *)b)[0]) | \
			 !(((short *)a)[1] == ((short *)b)[1]) | \
			 !(((short *)a)[2] == ((short *)b)[2]))

#define	ether_copy(s, d) { \
		((short *)d)[0] = ((short *)s)[0]; \
		((short *)d)[1] = ((short *)s)[1]; \
		((short *)d)[2] = ((short *)s)[2]; }

static const struct ether_addr ether_bcast = { {255, 255, 255, 255, 255, 255} };
static const struct ether_addr ether_null = { {0, 0, 0, 0, 0, 0} };

#define ETHER_ISBCAST(ea)	((((u8 *)(ea))[0] &		\
	((u8 *)(ea))[1] &		\
	((u8 *)(ea))[2] &		\
	((u8 *)(ea))[3] &		\
	((u8 *)(ea))[4] &		\
	((u8 *)(ea))[5]) == 0xff)
#define ETHER_ISNULLADDR(ea)	((((u8 *)(ea))[0] |		\
	((u8 *)(ea))[1] |		\
	((u8 *)(ea))[2] |		\
	((u8 *)(ea))[3] |		\
	((u8 *)(ea))[4] |		\
	((u8 *)(ea))[5]) == 0)

#define ETHER_MOVE_HDR(d, s) \
do { \
	struct ether_header t; \
	t = *(struct ether_header *)(s); \
	*(struct ether_header *)(d) = t; \
} while (0)

#include <packed_section_end.h>

#endif				/* _NET_ETHERNET_H_ */
Commit	Line	Data
a9533e7e HP	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
a9533e7e HP	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) { \
de9bca63 GKH	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; \
a9533e7e HP	53	}
	54
	55	BWL_PRE_PACKED_STRUCT struct ether_header {
de9bca63 GKH	56	u8 ether_dhost[ETHER_ADDR_LEN];
de9bca63 GKH	57	u8 ether_shost[ETHER_ADDR_LEN];
7d4df48e	58	u16 ether_type;
a9533e7e HP	59	} BWL_POST_PACKED_STRUCT;
	60
	61	BWL_PRE_PACKED_STRUCT struct ether_addr {
de9bca63	62	u8 octet[ETHER_ADDR_LEN];
a9533e7e HP	63	} BWL_POST_PACKED_STRUCT;
a9533e7e HP	64
de9bca63 GKH	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))
a9533e7e	71
de9bca63	72	#define ETHER_SET_UNICAST(ea) (((u8 )(ea))[0] = (((u8 )(ea))[0] & ~1))
a9533e7e	73
de9bca63	74	#define ETHER_ISMULTI(ea) (((const u8 *)(ea))[0] & 1)
a9533e7e	75
39dcff3f JC	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]))
a9533e7e HP	79
a9533e7e HP	80	#define ether_copy(s, d) { \
39dcff3f JC	81	((short )d)[0] = ((short )s)[0]; \
	82	((short )d)[1] = ((short )s)[1]; \
	83	((short )d)[2] = ((short )s)[2]; }
a9533e7e HP	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
de9bca63 GKH	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)
a9533e7e HP	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_ */