[linux-2.6-block.git] / include / linux / ieee802154.h

/*
 * IEEE802.15.4-2003 specification
 *
 * Copyright (C) 2007, 2008 Siemens AG
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * Written by:
 * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
 * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
 * Maxim Osipov <maxim.osipov@siemens.com>
 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
 */

#ifndef LINUX_IEEE802154_H
#define LINUX_IEEE802154_H

#include <linux/types.h>
#include <linux/random.h>
#include <asm/byteorder.h>

#define IEEE802154_MTU			127
#define IEEE802154_ACK_PSDU_LEN		5
#define IEEE802154_MIN_PSDU_LEN		9
#define IEEE802154_FCS_LEN		2

#define IEEE802154_PAN_ID_BROADCAST	0xffff
#define IEEE802154_ADDR_SHORT_BROADCAST	0xffff
#define IEEE802154_ADDR_SHORT_UNSPEC	0xfffe

#define IEEE802154_EXTENDED_ADDR_LEN	8

#define IEEE802154_LIFS_PERIOD		40
#define IEEE802154_SIFS_PERIOD		12
#define IEEE802154_MAX_SIFS_FRAME_SIZE	18

#define IEEE802154_MAX_CHANNEL		26
#define IEEE802154_MAX_PAGE		31

#define IEEE802154_FC_TYPE_BEACON	0x0	/* Frame is beacon */
#define	IEEE802154_FC_TYPE_DATA		0x1	/* Frame is data */
#define IEEE802154_FC_TYPE_ACK		0x2	/* Frame is acknowledgment */
#define IEEE802154_FC_TYPE_MAC_CMD	0x3	/* Frame is MAC command */

#define IEEE802154_FC_TYPE_SHIFT		0
#define IEEE802154_FC_TYPE_MASK		((1 << 3) - 1)
#define IEEE802154_FC_TYPE(x)		((x & IEEE802154_FC_TYPE_MASK) >> IEEE802154_FC_TYPE_SHIFT)
#define IEEE802154_FC_SET_TYPE(v, x)	do {	\
	v = (((v) & ~IEEE802154_FC_TYPE_MASK) | \
	    (((x) << IEEE802154_FC_TYPE_SHIFT) & IEEE802154_FC_TYPE_MASK)); \
	} while (0)

#define IEEE802154_FC_SECEN_SHIFT	3
#define IEEE802154_FC_SECEN		(1 << IEEE802154_FC_SECEN_SHIFT)
#define IEEE802154_FC_FRPEND_SHIFT	4
#define IEEE802154_FC_FRPEND		(1 << IEEE802154_FC_FRPEND_SHIFT)
#define IEEE802154_FC_ACK_REQ_SHIFT	5
#define IEEE802154_FC_ACK_REQ		(1 << IEEE802154_FC_ACK_REQ_SHIFT)
#define IEEE802154_FC_INTRA_PAN_SHIFT	6
#define IEEE802154_FC_INTRA_PAN		(1 << IEEE802154_FC_INTRA_PAN_SHIFT)

#define IEEE802154_FC_SAMODE_SHIFT	14
#define IEEE802154_FC_SAMODE_MASK	(3 << IEEE802154_FC_SAMODE_SHIFT)
#define IEEE802154_FC_DAMODE_SHIFT	10
#define IEEE802154_FC_DAMODE_MASK	(3 << IEEE802154_FC_DAMODE_SHIFT)

#define IEEE802154_FC_VERSION_SHIFT	12
#define IEEE802154_FC_VERSION_MASK	(3 << IEEE802154_FC_VERSION_SHIFT)
#define IEEE802154_FC_VERSION(x)	((x & IEEE802154_FC_VERSION_MASK) >> IEEE802154_FC_VERSION_SHIFT)

#define IEEE802154_FC_SAMODE(x)		\
	(((x) & IEEE802154_FC_SAMODE_MASK) >> IEEE802154_FC_SAMODE_SHIFT)

#define IEEE802154_FC_DAMODE(x)		\
	(((x) & IEEE802154_FC_DAMODE_MASK) >> IEEE802154_FC_DAMODE_SHIFT)

#define IEEE802154_SCF_SECLEVEL_MASK		7
#define IEEE802154_SCF_SECLEVEL_SHIFT		0
#define IEEE802154_SCF_SECLEVEL(x)		(x & IEEE802154_SCF_SECLEVEL_MASK)
#define IEEE802154_SCF_KEY_ID_MODE_SHIFT	3
#define IEEE802154_SCF_KEY_ID_MODE_MASK		(3 << IEEE802154_SCF_KEY_ID_MODE_SHIFT)
#define IEEE802154_SCF_KEY_ID_MODE(x)		\
	((x & IEEE802154_SCF_KEY_ID_MODE_MASK) >> IEEE802154_SCF_KEY_ID_MODE_SHIFT)

#define IEEE802154_SCF_KEY_IMPLICIT		0
#define IEEE802154_SCF_KEY_INDEX		1
#define IEEE802154_SCF_KEY_SHORT_INDEX		2
#define IEEE802154_SCF_KEY_HW_INDEX		3

#define IEEE802154_SCF_SECLEVEL_NONE		0
#define IEEE802154_SCF_SECLEVEL_MIC32		1
#define IEEE802154_SCF_SECLEVEL_MIC64		2
#define IEEE802154_SCF_SECLEVEL_MIC128		3
#define IEEE802154_SCF_SECLEVEL_ENC		4
#define IEEE802154_SCF_SECLEVEL_ENC_MIC32	5
#define IEEE802154_SCF_SECLEVEL_ENC_MIC64	6
#define IEEE802154_SCF_SECLEVEL_ENC_MIC128	7

/* MAC footer size */
#define IEEE802154_MFR_SIZE	2 /* 2 octets */

/* MAC's Command Frames Identifiers */
#define IEEE802154_CMD_ASSOCIATION_REQ		0x01
#define IEEE802154_CMD_ASSOCIATION_RESP		0x02
#define IEEE802154_CMD_DISASSOCIATION_NOTIFY	0x03
#define IEEE802154_CMD_DATA_REQ			0x04
#define IEEE802154_CMD_PANID_CONFLICT_NOTIFY	0x05
#define IEEE802154_CMD_ORPHAN_NOTIFY		0x06
#define IEEE802154_CMD_BEACON_REQ		0x07
#define IEEE802154_CMD_COORD_REALIGN_NOTIFY	0x08
#define IEEE802154_CMD_GTS_REQ			0x09

/*
 * The return values of MAC operations
 */
enum {
	/*
	 * The requested operation was completed successfully.
	 * For a transmission request, this value indicates
	 * a successful transmission.
	 */
	IEEE802154_SUCCESS = 0x0,

	/* The beacon was lost following a synchronization request. */
	IEEE802154_BEACON_LOSS = 0xe0,
	/*
	 * A transmission could not take place due to activity on the
	 * channel, i.e., the CSMA-CA mechanism has failed.
	 */
	IEEE802154_CHNL_ACCESS_FAIL = 0xe1,
	/* The GTS request has been denied by the PAN coordinator. */
	IEEE802154_DENINED = 0xe2,
	/* The attempt to disable the transceiver has failed. */
	IEEE802154_DISABLE_TRX_FAIL = 0xe3,
	/*
	 * The received frame induces a failed security check according to
	 * the security suite.
	 */
	IEEE802154_FAILED_SECURITY_CHECK = 0xe4,
	/*
	 * The frame resulting from secure processing has a length that is
	 * greater than aMACMaxFrameSize.
	 */
	IEEE802154_FRAME_TOO_LONG = 0xe5,
	/*
	 * The requested GTS transmission failed because the specified GTS
	 * either did not have a transmit GTS direction or was not defined.
	 */
	IEEE802154_INVALID_GTS = 0xe6,
	/*
	 * A request to purge an MSDU from the transaction queue was made using
	 * an MSDU handle that was not found in the transaction table.
	 */
	IEEE802154_INVALID_HANDLE = 0xe7,
	/* A parameter in the primitive is out of the valid range.*/
	IEEE802154_INVALID_PARAMETER = 0xe8,
	/* No acknowledgment was received after aMaxFrameRetries. */
	IEEE802154_NO_ACK = 0xe9,
	/* A scan operation failed to find any network beacons.*/
	IEEE802154_NO_BEACON = 0xea,
	/* No response data were available following a request. */
	IEEE802154_NO_DATA = 0xeb,
	/* The operation failed because a short address was not allocated. */
	IEEE802154_NO_SHORT_ADDRESS = 0xec,
	/*
	 * A receiver enable request was unsuccessful because it could not be
	 * completed within the CAP.
	 */
	IEEE802154_OUT_OF_CAP = 0xed,
	/*
	 * A PAN identifier conflict has been detected and communicated to the
	 * PAN coordinator.
	 */
	IEEE802154_PANID_CONFLICT = 0xee,
	/* A coordinator realignment command has been received. */
	IEEE802154_REALIGMENT = 0xef,
	/* The transaction has expired and its information discarded. */
	IEEE802154_TRANSACTION_EXPIRED = 0xf0,
	/* There is no capacity to store the transaction. */
	IEEE802154_TRANSACTION_OVERFLOW = 0xf1,
	/*
	 * The transceiver was in the transmitter enabled state when the
	 * receiver was requested to be enabled.
	 */
	IEEE802154_TX_ACTIVE = 0xf2,
	/* The appropriate key is not available in the ACL. */
	IEEE802154_UNAVAILABLE_KEY = 0xf3,
	/*
	 * A SET/GET request was issued with the identifier of a PIB attribute
	 * that is not supported.
	 */
	IEEE802154_UNSUPPORTED_ATTR = 0xf4,
	/*
	 * A request to perform a scan operation failed because the MLME was
	 * in the process of performing a previously initiated scan operation.
	 */
	IEEE802154_SCAN_IN_PROGRESS = 0xfc,
};

/**
 * ieee802154_is_valid_psdu_len - check if psdu len is valid
 * available lengths:
 *	0-4	Reserved
 *	5	MPDU (Acknowledgment)
 *	6-8	Reserved
 *	9-127	MPDU
 *
 * @len: psdu len with (MHR + payload + MFR)
 */
static inline bool ieee802154_is_valid_psdu_len(const u8 len)
{
	return (len == IEEE802154_ACK_PSDU_LEN ||
		(len >= IEEE802154_MIN_PSDU_LEN && len <= IEEE802154_MTU));
}

/**
 * ieee802154_is_valid_psdu_len - check if extended addr is valid
 * @addr: extended addr to check
 */
static inline bool ieee802154_is_valid_extended_addr(const __le64 addr)
{
	/* These EUI-64 addresses are reserved by IEEE. 0xffffffffffffffff
	 * is used internally as extended to short address broadcast mapping.
	 * This is currently a workaround because neighbor discovery can't
	 * deal with short addresses types right now.
	 */
	return ((addr != cpu_to_le64(0x0000000000000000ULL)) &&
		(addr != cpu_to_le64(0xffffffffffffffffULL)));
}

/**
 * ieee802154_random_extended_addr - generates a random extended address
 * @addr: extended addr pointer to place the random address
 */
static inline void ieee802154_random_extended_addr(__le64 *addr)
{
	get_random_bytes(addr, IEEE802154_EXTENDED_ADDR_LEN);

	/* toggle some bit if we hit an invalid extended addr */
	if (!ieee802154_is_valid_extended_addr(*addr))
		((u8 *)addr)[IEEE802154_EXTENDED_ADDR_LEN - 1] ^= 0x01;
}

#endif /* LINUX_IEEE802154_H */
Commit	Line	Data
9ec76716 SL	1	/*
	2	* IEEE802.15.4-2003 specification
	3	*
	4	* Copyright (C) 2007, 2008 Siemens AG
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2
	8	* as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
9ec76716 SL	15	* Written by:
	16	* Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
	17	* Maxim Gorbachyov <maxim.gorbachev@siemens.com>
	18	* Maxim Osipov <maxim.osipov@siemens.com>
	19	* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
719269af	20	* Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
9ec76716 SL	21	*/
9ec76716 SL	22
4ca24aca AA	23	#ifndef LINUX_IEEE802154_H
4ca24aca AA	24	#define LINUX_IEEE802154_H
9ec76716	25
fa491001	26	#include <linux/types.h>
35d5a374	27	#include <linux/random.h>
c28bee84	28	#include <asm/byteorder.h>
fa491001	29
719269af	30	#define IEEE802154_MTU 127
306f7aa1 AA	31	#define IEEE802154_ACK_PSDU_LEN 5
306f7aa1 AA	32	#define IEEE802154_MIN_PSDU_LEN 9
3f3c4bb5	33	#define IEEE802154_FCS_LEN 2
719269af	34
702bf371	35	#define IEEE802154_PAN_ID_BROADCAST 0xffff
9830c62a AA	36	#define IEEE802154_ADDR_SHORT_BROADCAST 0xffff
9830c62a AA	37	#define IEEE802154_ADDR_SHORT_UNSPEC 0xfffe
702bf371	38
1906bbbd AA	39	#define IEEE802154_EXTENDED_ADDR_LEN 8
1906bbbd AA	40
61f2dcba AA	41	#define IEEE802154_LIFS_PERIOD 40
61f2dcba AA	42	#define IEEE802154_SIFS_PERIOD 12
3f3c4bb5	43	#define IEEE802154_MAX_SIFS_FRAME_SIZE 18
61f2dcba	44
cb41c8dd AA	45	#define IEEE802154_MAX_CHANNEL 26
	46	#define IEEE802154_MAX_PAGE 31
	47
9ec76716 SL	48	#define IEEE802154_FC_TYPE_BEACON 0x0 /* Frame is beacon */
	49	#define IEEE802154_FC_TYPE_DATA 0x1 /* Frame is data */
	50	#define IEEE802154_FC_TYPE_ACK 0x2 /* Frame is acknowledgment */
	51	#define IEEE802154_FC_TYPE_MAC_CMD 0x3 /* Frame is MAC command */
	52
	53	#define IEEE802154_FC_TYPE_SHIFT 0
	54	#define IEEE802154_FC_TYPE_MASK ((1 << 3) - 1)
	55	#define IEEE802154_FC_TYPE(x) ((x & IEEE802154_FC_TYPE_MASK) >> IEEE802154_FC_TYPE_SHIFT)
	56	#define IEEE802154_FC_SET_TYPE(v, x) do { \
	57	v = (((v) & ~IEEE802154_FC_TYPE_MASK) \| \
	58	(((x) << IEEE802154_FC_TYPE_SHIFT) & IEEE802154_FC_TYPE_MASK)); \
	59	} while (0)
	60
94b4f6c2 PB	61	#define IEEE802154_FC_SECEN_SHIFT 3
	62	#define IEEE802154_FC_SECEN (1 << IEEE802154_FC_SECEN_SHIFT)
	63	#define IEEE802154_FC_FRPEND_SHIFT 4
	64	#define IEEE802154_FC_FRPEND (1 << IEEE802154_FC_FRPEND_SHIFT)
	65	#define IEEE802154_FC_ACK_REQ_SHIFT 5
	66	#define IEEE802154_FC_ACK_REQ (1 << IEEE802154_FC_ACK_REQ_SHIFT)
	67	#define IEEE802154_FC_INTRA_PAN_SHIFT 6
	68	#define IEEE802154_FC_INTRA_PAN (1 << IEEE802154_FC_INTRA_PAN_SHIFT)
9ec76716 SL	69
	70	#define IEEE802154_FC_SAMODE_SHIFT 14
	71	#define IEEE802154_FC_SAMODE_MASK (3 << IEEE802154_FC_SAMODE_SHIFT)
	72	#define IEEE802154_FC_DAMODE_SHIFT 10
	73	#define IEEE802154_FC_DAMODE_MASK (3 << IEEE802154_FC_DAMODE_SHIFT)
	74
94b4f6c2 PB	75	#define IEEE802154_FC_VERSION_SHIFT 12
	76	#define IEEE802154_FC_VERSION_MASK (3 << IEEE802154_FC_VERSION_SHIFT)
	77	#define IEEE802154_FC_VERSION(x) ((x & IEEE802154_FC_VERSION_MASK) >> IEEE802154_FC_VERSION_SHIFT)
	78
9ec76716 SL	79	#define IEEE802154_FC_SAMODE(x) \
	80	(((x) & IEEE802154_FC_SAMODE_MASK) >> IEEE802154_FC_SAMODE_SHIFT)
	81
	82	#define IEEE802154_FC_DAMODE(x) \
	83	(((x) & IEEE802154_FC_DAMODE_MASK) >> IEEE802154_FC_DAMODE_SHIFT)
	84
94b4f6c2 PB	85	#define IEEE802154_SCF_SECLEVEL_MASK 7
	86	#define IEEE802154_SCF_SECLEVEL_SHIFT 0
	87	#define IEEE802154_SCF_SECLEVEL(x) (x & IEEE802154_SCF_SECLEVEL_MASK)
	88	#define IEEE802154_SCF_KEY_ID_MODE_SHIFT 3
	89	#define IEEE802154_SCF_KEY_ID_MODE_MASK (3 << IEEE802154_SCF_KEY_ID_MODE_SHIFT)
	90	#define IEEE802154_SCF_KEY_ID_MODE(x) \
	91	((x & IEEE802154_SCF_KEY_ID_MODE_MASK) >> IEEE802154_SCF_KEY_ID_MODE_SHIFT)
	92
	93	#define IEEE802154_SCF_KEY_IMPLICIT 0
	94	#define IEEE802154_SCF_KEY_INDEX 1
	95	#define IEEE802154_SCF_KEY_SHORT_INDEX 2
	96	#define IEEE802154_SCF_KEY_HW_INDEX 3
9ec76716	97
c3a6114f PB	98	#define IEEE802154_SCF_SECLEVEL_NONE 0
	99	#define IEEE802154_SCF_SECLEVEL_MIC32 1
	100	#define IEEE802154_SCF_SECLEVEL_MIC64 2
	101	#define IEEE802154_SCF_SECLEVEL_MIC128 3
	102	#define IEEE802154_SCF_SECLEVEL_ENC 4
	103	#define IEEE802154_SCF_SECLEVEL_ENC_MIC32 5
	104	#define IEEE802154_SCF_SECLEVEL_ENC_MIC64 6
	105	#define IEEE802154_SCF_SECLEVEL_ENC_MIC128 7
	106
719269af	107	/* MAC footer size */
	108	#define IEEE802154_MFR_SIZE 2 /* 2 octets */
	109
9ec76716 SL	110	/* MAC's Command Frames Identifiers */
	111	#define IEEE802154_CMD_ASSOCIATION_REQ 0x01
	112	#define IEEE802154_CMD_ASSOCIATION_RESP 0x02
	113	#define IEEE802154_CMD_DISASSOCIATION_NOTIFY 0x03
	114	#define IEEE802154_CMD_DATA_REQ 0x04
	115	#define IEEE802154_CMD_PANID_CONFLICT_NOTIFY 0x05
	116	#define IEEE802154_CMD_ORPHAN_NOTIFY 0x06
	117	#define IEEE802154_CMD_BEACON_REQ 0x07
	118	#define IEEE802154_CMD_COORD_REALIGN_NOTIFY 0x08
	119	#define IEEE802154_CMD_GTS_REQ 0x09
	120
	121	/*
	122	* The return values of MAC operations
	123	*/
	124	enum {
	125	/*
	126	* The requested operation was completed successfully.
	127	* For a transmission request, this value indicates
	128	* a successful transmission.
	129	*/
	130	IEEE802154_SUCCESS = 0x0,
	131
	132	/* The beacon was lost following a synchronization request. */
	133	IEEE802154_BEACON_LOSS = 0xe0,
	134	/*
	135	* A transmission could not take place due to activity on the
	136	* channel, i.e., the CSMA-CA mechanism has failed.
	137	*/
	138	IEEE802154_CHNL_ACCESS_FAIL = 0xe1,
	139	/* The GTS request has been denied by the PAN coordinator. */
	140	IEEE802154_DENINED = 0xe2,
	141	/* The attempt to disable the transceiver has failed. */
	142	IEEE802154_DISABLE_TRX_FAIL = 0xe3,
	143	/*
	144	* The received frame induces a failed security check according to
	145	* the security suite.
	146	*/
	147	IEEE802154_FAILED_SECURITY_CHECK = 0xe4,
	148	/*
	149	* The frame resulting from secure processing has a length that is
	150	* greater than aMACMaxFrameSize.
	151	*/
	152	IEEE802154_FRAME_TOO_LONG = 0xe5,
	153	/*
	154	* The requested GTS transmission failed because the specified GTS
	155	* either did not have a transmit GTS direction or was not defined.
	156	*/
	157	IEEE802154_INVALID_GTS = 0xe6,
	158	/*
	159	* A request to purge an MSDU from the transaction queue was made using
	160	* an MSDU handle that was not found in the transaction table.
	161	*/
	162	IEEE802154_INVALID_HANDLE = 0xe7,
	163	/* A parameter in the primitive is out of the valid range.*/
	164	IEEE802154_INVALID_PARAMETER = 0xe8,
	165	/* No acknowledgment was received after aMaxFrameRetries. */
	166	IEEE802154_NO_ACK = 0xe9,
	167	/* A scan operation failed to find any network beacons.*/
	168	IEEE802154_NO_BEACON = 0xea,
	169	/* No response data were available following a request. */
	170	IEEE802154_NO_DATA = 0xeb,
	171	/* The operation failed because a short address was not allocated. */
	172	IEEE802154_NO_SHORT_ADDRESS = 0xec,
	173	/*
174	* A receiver enable request was unsuccessful because it could not be
175	* completed within the CAP.
176	*/
177	IEEE802154_OUT_OF_CAP = 0xed,
178	/*
179	* A PAN identifier conflict has been detected and communicated to the
180	* PAN coordinator.
181	*/
182	IEEE802154_PANID_CONFLICT = 0xee,
183	/* A coordinator realignment command has been received. */
184	IEEE802154_REALIGMENT = 0xef,
185	/* The transaction has expired and its information discarded. */
186	IEEE802154_TRANSACTION_EXPIRED = 0xf0,
187	/* There is no capacity to store the transaction. */
188	IEEE802154_TRANSACTION_OVERFLOW = 0xf1,
189	/*
190	* The transceiver was in the transmitter enabled state when the
191	* receiver was requested to be enabled.
192	*/
193	IEEE802154_TX_ACTIVE = 0xf2,
194	/* The appropriate key is not available in the ACL. */
195	IEEE802154_UNAVAILABLE_KEY = 0xf3,
196	/*
197	* A SET/GET request was issued with the identifier of a PIB attribute
198	* that is not supported.
199	*/
200	IEEE802154_UNSUPPORTED_ATTR = 0xf4,
201	/*
202	* A request to perform a scan operation failed because the MLME was
203	* in the process of performing a previously initiated scan operation.
204	*/
205	IEEE802154_SCAN_IN_PROGRESS = 0xfc,
206	};
207
fa491001 AA	208	/**
fa491001 AA	209	* ieee802154_is_valid_psdu_len - check if psdu len is valid
306f7aa1 AA	210	* available lengths:
	211	* 0-4 Reserved
	212	* 5 MPDU (Acknowledgment)
	213	* 6-8 Reserved
	214	* 9-127 MPDU
	215	*
fa491001 AA	216	* @len: psdu len with (MHR + payload + MFR)
	217	*/
	218	static inline bool ieee802154_is_valid_psdu_len(const u8 len)
	219	{
306f7aa1 AA	220	return (len == IEEE802154_ACK_PSDU_LEN \|\|
306f7aa1 AA	221	(len >= IEEE802154_MIN_PSDU_LEN && len <= IEEE802154_MTU));
fa491001	222	}
9ec76716	223
cb904b0a AA	224	/**
	225	* ieee802154_is_valid_psdu_len - check if extended addr is valid
	226	* @addr: extended addr to check
	227	*/
	228	static inline bool ieee802154_is_valid_extended_addr(const __le64 addr)
	229	{
	230	/* These EUI-64 addresses are reserved by IEEE. 0xffffffffffffffff
	231	* is used internally as extended to short address broadcast mapping.
	232	* This is currently a workaround because neighbor discovery can't
	233	* deal with short addresses types right now.
	234	*/
0d8a52f9	235	return ((addr != cpu_to_le64(0x0000000000000000ULL)) &&
c28bee84	236	(addr != cpu_to_le64(0xffffffffffffffffULL)));
cb904b0a AA	237	}
cb904b0a AA	238
35d5a374 AA	239	/**
	240	* ieee802154_random_extended_addr - generates a random extended address
	241	* @addr: extended addr pointer to place the random address
	242	*/
	243	static inline void ieee802154_random_extended_addr(__le64 *addr)
	244	{
	245	get_random_bytes(addr, IEEE802154_EXTENDED_ADDR_LEN);
	246
	247	/* toggle some bit if we hit an invalid extended addr */
	248	if (!ieee802154_is_valid_extended_addr(*addr))
	249	((u8 *)addr)[IEEE802154_EXTENDED_ADDR_LEN - 1] ^= 0x01;
	250	}
	251
4ca24aca	252	#endif /* LINUX_IEEE802154_H */