[linux-2.6-block.git] / include / net / mac802154.h

/*
 * IEEE802.15.4-2003 specification
 *
 * Copyright (C) 2007-2012 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.
 *
 */
#ifndef NET_MAC802154_H
#define NET_MAC802154_H

#include <net/af_ieee802154.h>
#include <linux/ieee802154.h>
#include <linux/skbuff.h>
#include <linux/unaligned/memmove.h>

#include <net/cfg802154.h>

/* General MAC frame format:
 *  2 bytes: Frame Control
 *  1 byte:  Sequence Number
 * 20 bytes: Addressing fields
 * 14 bytes: Auxiliary Security Header
 */
#define MAC802154_FRAME_HARD_HEADER_LEN		(2 + 1 + 20 + 14)

/* The following flags are used to indicate changed address settings from
 * the stack to the hardware.
 */

/* indicates that the Short Address changed */
#define IEEE802154_AFILT_SADDR_CHANGED		0x00000001
/* indicates that the IEEE Address changed */
#define IEEE802154_AFILT_IEEEADDR_CHANGED	0x00000002
/* indicates that the PAN ID changed */
#define IEEE802154_AFILT_PANID_CHANGED		0x00000004
/* indicates that PAN Coordinator status changed */
#define IEEE802154_AFILT_PANC_CHANGED		0x00000008

struct ieee802154_hw_addr_filt {
	__le16	pan_id;		/* Each independent PAN selects a unique
				 * identifier. This PAN id allows communication
				 * between devices within a network using short
				 * addresses and enables transmissions between
				 * devices across independent networks.
				 */
	__le16	short_addr;
	__le64	ieee_addr;
	u8	pan_coord;
};

struct ieee802154_vif {
	int type;

	/* must be last */
	u8 drv_priv[0] __aligned(sizeof(void *));
};

struct ieee802154_hw {
	/* filled by the driver */
	int	extra_tx_headroom;
	u32	flags;
	struct	device *parent;

	/* filled by mac802154 core */
	struct	ieee802154_hw_addr_filt hw_filt;
	void	*priv;
	struct	wpan_phy *phy;
	size_t vif_data_size;
};

/* Checksum is in hardware and is omitted from a packet
 *
 * These following flags are used to indicate hardware capabilities to
 * the stack. Generally, flags here should have their meaning
 * done in a way that the simplest hardware doesn't need setting
 * any particular flags. There are some exceptions to this rule,
 * however, so you are advised to review these flags carefully.
 */

/* Indicates that xmitter will add FCS on it's own. */
#define IEEE802154_HW_TX_OMIT_CKSUM	0x00000001
/* Indicates that receiver will autorespond with ACK frames. */
#define IEEE802154_HW_AACK		0x00000002
/* Indicates that transceiver will support transmit power setting. */
#define IEEE802154_HW_TXPOWER		0x00000004
/* Indicates that transceiver will support listen before transmit. */
#define IEEE802154_HW_LBT		0x00000008
/* Indicates that transceiver will support cca mode setting. */
#define IEEE802154_HW_CCA_MODE		0x00000010
/* Indicates that transceiver will support cca ed level setting. */
#define IEEE802154_HW_CCA_ED_LEVEL	0x00000020
/* Indicates that transceiver will support csma (max_be, min_be, csma retries)
 * settings. */
#define IEEE802154_HW_CSMA_PARAMS	0x00000040
/* Indicates that transceiver will support ARET frame retries setting. */
#define IEEE802154_HW_FRAME_RETRIES	0x00000080
/* Indicates that transceiver will support hardware address filter setting. */
#define IEEE802154_HW_AFILT		0x00000100
/* Indicates that transceiver will support promiscuous mode setting. */
#define IEEE802154_HW_PROMISCUOUS	0x00000200
/* Indicates that receiver omits FCS. */
#define IEEE802154_HW_RX_OMIT_CKSUM	0x00000400
/* Indicates that receiver will not filter frames with bad checksum. */
#define IEEE802154_HW_RX_DROP_BAD_CKSUM	0x00000800

/* Indicates that receiver omits FCS and xmitter will add FCS on it's own. */
#define IEEE802154_HW_OMIT_CKSUM	(IEEE802154_HW_TX_OMIT_CKSUM | \
					 IEEE802154_HW_RX_OMIT_CKSUM)

/* This groups the most common CSMA support fields into one. */
#define IEEE802154_HW_CSMA		(IEEE802154_HW_CCA_MODE | \
					 IEEE802154_HW_CCA_ED_LEVEL | \
					 IEEE802154_HW_CSMA_PARAMS)

/* This groups the most common ARET support fields into one. */
#define IEEE802154_HW_ARET		(IEEE802154_HW_CSMA | \
					 IEEE802154_HW_FRAME_RETRIES)

/* struct ieee802154_ops - callbacks from mac802154 to the driver
 *
 * This structure contains various callbacks that the driver may
 * handle or, in some cases, must handle, for example to transmit
 * a frame.
 *
 * start: Handler that 802.15.4 module calls for device initialization.
 *	  This function is called before the first interface is attached.
 *
 * stop:  Handler that 802.15.4 module calls for device cleanup.
 *	  This function is called after the last interface is removed.
 *
 * xmit_sync:
 *	  Handler that 802.15.4 module calls for each transmitted frame.
 *	  skb cntains the buffer starting from the IEEE 802.15.4 header.
 *	  The low-level driver should send the frame based on available
 *	  configuration. This is called by a workqueue and useful for
 *	  synchronous 802.15.4 drivers.
 *	  This function should return zero or negative errno.
 *
 *	  WARNING:
 *	  This will be deprecated soon. We don't accept synced xmit callbacks
 *	  drivers anymore.
 *
 * xmit_async:
 *	  Handler that 802.15.4 module calls for each transmitted frame.
 *	  skb cntains the buffer starting from the IEEE 802.15.4 header.
 *	  The low-level driver should send the frame based on available
 *	  configuration.
 *	  This function should return zero or negative errno.
 *
 * ed:    Handler that 802.15.4 module calls for Energy Detection.
 *	  This function should place the value for detected energy
 *	  (usually device-dependant) in the level pointer and return
 *	  either zero or negative errno. Called with pib_lock held.
 *
 * set_channel:
 * 	  Set radio for listening on specific channel.
 *	  Set the device for listening on specified channel.
 *	  Returns either zero, or negative errno. Called with pib_lock held.
 *
 * set_hw_addr_filt:
 *	  Set radio for listening on specific address.
 *	  Set the device for listening on specified address.
 *	  Returns either zero, or negative errno.
 *
 * set_txpower:
 *	  Set radio transmit power in dB. Called with pib_lock held.
 *	  Returns either zero, or negative errno.
 *
 * set_lbt
 *	  Enables or disables listen before talk on the device. Called with
 *	  pib_lock held.
 *	  Returns either zero, or negative errno.
 *
 * set_cca_mode
 *	  Sets the CCA mode used by the device. Called with pib_lock held.
 *	  Returns either zero, or negative errno.
 *
 * set_cca_ed_level
 *	  Sets the CCA energy detection threshold in dBm. Called with pib_lock
 *	  held.
 *	  Returns either zero, or negative errno.
 *
 * set_csma_params
 *	  Sets the CSMA parameter set for the PHY. Called with pib_lock held.
 *	  Returns either zero, or negative errno.
 *
 * set_frame_retries
 *	  Sets the retransmission attempt limit. Called with pib_lock held.
 *	  Returns either zero, or negative errno.
 *
 * set_promiscuous_mode
 *	  Enables or disable promiscuous mode.
 */
struct ieee802154_ops {
	struct module	*owner;
	int		(*start)(struct ieee802154_hw *hw);
	void		(*stop)(struct ieee802154_hw *hw);
	int		(*xmit_sync)(struct ieee802154_hw *hw,
				     struct sk_buff *skb);
	int		(*xmit_async)(struct ieee802154_hw *hw,
				      struct sk_buff *skb);
	int		(*ed)(struct ieee802154_hw *hw, u8 *level);
	int		(*set_channel)(struct ieee802154_hw *hw, u8 page,
				       u8 channel);
	int		(*set_hw_addr_filt)(struct ieee802154_hw *hw,
					    struct ieee802154_hw_addr_filt *filt,
					    unsigned long changed);
	int		(*set_txpower)(struct ieee802154_hw *hw, s8 dbm);
	int		(*set_lbt)(struct ieee802154_hw *hw, bool on);
	int		(*set_cca_mode)(struct ieee802154_hw *hw,
					const struct wpan_phy_cca *cca);
	int		(*set_cca_ed_level)(struct ieee802154_hw *hw,
					    s32 level);
	int		(*set_csma_params)(struct ieee802154_hw *hw,
					   u8 min_be, u8 max_be, u8 retries);
	int		(*set_frame_retries)(struct ieee802154_hw *hw,
					     s8 retries);
	int             (*set_promiscuous_mode)(struct ieee802154_hw *hw,
						const bool on);
};

/**
 * ieee802154_be64_to_le64 - copies and convert be64 to le64
 * @le64_dst: le64 destination pointer
 * @be64_src: be64 source pointer
 */
static inline void ieee802154_be64_to_le64(void *le64_dst, const void *be64_src)
{
	__put_unaligned_memmove64(swab64p(be64_src), le64_dst);
}

/**
 * ieee802154_le64_to_be64 - copies and convert le64 to be64
 * @be64_dst: be64 destination pointer
 * @le64_src: le64 source pointer
 */
static inline void ieee802154_le64_to_be64(void *be64_dst, const void *le64_src)
{
	__put_unaligned_memmove64(swab64p(le64_src), be64_dst);
}

/* Basic interface to register ieee802154 device */
struct ieee802154_hw *
ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops);
void ieee802154_free_hw(struct ieee802154_hw *hw);
int ieee802154_register_hw(struct ieee802154_hw *hw);
void ieee802154_unregister_hw(struct ieee802154_hw *hw);

void ieee802154_rx(struct ieee802154_hw *hw, struct sk_buff *skb);
void ieee802154_rx_irqsafe(struct ieee802154_hw *hw, struct sk_buff *skb,
			   u8 lqi);

void ieee802154_wake_queue(struct ieee802154_hw *hw);
void ieee802154_stop_queue(struct ieee802154_hw *hw);
void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
			      bool ifs_handling);

#endif /* NET_MAC802154_H */
Commit	Line	Data
0afd7ad9	1	/*
	2	* IEEE802.15.4-2003 specification
	3	*
	4	* Copyright (C) 2007-2012 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	*
0afd7ad9	15	*/
	16	#ifndef NET_MAC802154_H
	17	#define NET_MAC802154_H
	18
	19	#include <net/af_ieee802154.h>
239a84a9	20	#include <linux/ieee802154.h>
94b4f6c2	21	#include <linux/skbuff.h>
ba5bf17e	22	#include <linux/unaligned/memmove.h>
0afd7ad9	23
7fe9a388 AA	24	#include <net/cfg802154.h>
7fe9a388 AA	25
32bad7e3	26	/* General MAC frame format:
	27	* 2 bytes: Frame Control
	28	* 1 byte: Sequence Number
	29	* 20 bytes: Addressing fields
	30	* 14 bytes: Auxiliary Security Header
	31	*/
	32	#define MAC802154_FRAME_HARD_HEADER_LEN (2 + 1 + 20 + 14)
	33
0afd7ad9	34	/* The following flags are used to indicate changed address settings from
	35	* the stack to the hardware.
	36	*/
	37
	38	/* indicates that the Short Address changed */
57205c14	39	#define IEEE802154_AFILT_SADDR_CHANGED 0x00000001
0afd7ad9	40	/* indicates that the IEEE Address changed */
57205c14	41	#define IEEE802154_AFILT_IEEEADDR_CHANGED 0x00000002
0afd7ad9	42	/* indicates that the PAN ID changed */
57205c14	43	#define IEEE802154_AFILT_PANID_CHANGED 0x00000004
0afd7ad9	44	/* indicates that PAN Coordinator status changed */
57205c14	45	#define IEEE802154_AFILT_PANC_CHANGED 0x00000008
0afd7ad9	46
	47	struct ieee802154_hw_addr_filt {
	48	__le16 pan_id; /* Each independent PAN selects a unique
	49	* identifier. This PAN id allows communication
	50	* between devices within a network using short
	51	* addresses and enables transmissions between
	52	* devices across independent networks.
	53	*/
	54	__le16 short_addr;
b70ab2e8	55	__le64 ieee_addr;
0afd7ad9	56	u8 pan_coord;
	57	};
	58
7c118c1a AA	59	struct ieee802154_vif {
	60	int type;
	61
	62	/* must be last */
	63	u8 drv_priv[0] __aligned(sizeof(void *));
	64	};
	65
5a504397	66	struct ieee802154_hw {
0afd7ad9	67	/* filled by the driver */
	68	int extra_tx_headroom;
	69	u32 flags;
	70	struct device *parent;
	71
	72	/* filled by mac802154 core */
	73	struct ieee802154_hw_addr_filt hw_filt;
	74	void *priv;
	75	struct wpan_phy *phy;
7c118c1a	76	size_t vif_data_size;
0afd7ad9	77	};
	78
	79	/* Checksum is in hardware and is omitted from a packet
	80	*
	81	* These following flags are used to indicate hardware capabilities to
	82	* the stack. Generally, flags here should have their meaning
	83	* done in a way that the simplest hardware doesn't need setting
	84	* any particular flags. There are some exceptions to this rule,
	85	* however, so you are advised to review these flags carefully.
	86	*/
	87
90386a7e AA	88	/* Indicates that xmitter will add FCS on it's own. */
90386a7e AA	89	#define IEEE802154_HW_TX_OMIT_CKSUM 0x00000001
0afd7ad9	90	/* Indicates that receiver will autorespond with ACK frames. */
90a6161d	91	#define IEEE802154_HW_AACK 0x00000002
640985ec	92	/* Indicates that transceiver will support transmit power setting. */
90a6161d	93	#define IEEE802154_HW_TXPOWER 0x00000004
640985ec	94	/* Indicates that transceiver will support listen before transmit. */
90a6161d	95	#define IEEE802154_HW_LBT 0x00000008
640985ec	96	/* Indicates that transceiver will support cca mode setting. */
90a6161d	97	#define IEEE802154_HW_CCA_MODE 0x00000010
640985ec	98	/* Indicates that transceiver will support cca ed level setting. */
90a6161d	99	#define IEEE802154_HW_CCA_ED_LEVEL 0x00000020
640985ec AA	100	/* Indicates that transceiver will support csma (max_be, min_be, csma retries)
640985ec AA	101	* settings. */
90a6161d	102	#define IEEE802154_HW_CSMA_PARAMS 0x00000040
640985ec	103	/* Indicates that transceiver will support ARET frame retries setting. */
90a6161d	104	#define IEEE802154_HW_FRAME_RETRIES 0x00000080
c8fc84ed AA	105	/* Indicates that transceiver will support hardware address filter setting. */
c8fc84ed AA	106	#define IEEE802154_HW_AFILT 0x00000100
94b79222 AA	107	/* Indicates that transceiver will support promiscuous mode setting. */
94b79222 AA	108	#define IEEE802154_HW_PROMISCUOUS 0x00000200
90386a7e AA	109	/* Indicates that receiver omits FCS. */
90386a7e AA	110	#define IEEE802154_HW_RX_OMIT_CKSUM 0x00000400
ec718f3d AA	111	/* Indicates that receiver will not filter frames with bad checksum. */
ec718f3d AA	112	#define IEEE802154_HW_RX_DROP_BAD_CKSUM 0x00000800
90386a7e AA	113
	114	/* Indicates that receiver omits FCS and xmitter will add FCS on it's own. */
	115	#define IEEE802154_HW_OMIT_CKSUM (IEEE802154_HW_TX_OMIT_CKSUM \| \
	116	IEEE802154_HW_RX_OMIT_CKSUM)
640985ec AA	117
	118	/* This groups the most common CSMA support fields into one. */
	119	#define IEEE802154_HW_CSMA (IEEE802154_HW_CCA_MODE \| \
	120	IEEE802154_HW_CCA_ED_LEVEL \| \
ab79be3e AA	121	IEEE802154_HW_CSMA_PARAMS)
	122
	123	/* This groups the most common ARET support fields into one. */
	124	#define IEEE802154_HW_ARET (IEEE802154_HW_CSMA \| \
640985ec	125	IEEE802154_HW_FRAME_RETRIES)
0afd7ad9	126
	127	/* struct ieee802154_ops - callbacks from mac802154 to the driver
	128	*
	129	* This structure contains various callbacks that the driver may
	130	* handle or, in some cases, must handle, for example to transmit
	131	* a frame.
	132	*
	133	* start: Handler that 802.15.4 module calls for device initialization.
	134	* This function is called before the first interface is attached.
	135	*
	136	* stop: Handler that 802.15.4 module calls for device cleanup.
	137	* This function is called after the last interface is removed.
	138	*
ed0a5dce AA	139	* xmit_sync:
	140	* Handler that 802.15.4 module calls for each transmitted frame.
	141	* skb cntains the buffer starting from the IEEE 802.15.4 header.
	142	* The low-level driver should send the frame based on available
	143	* configuration. This is called by a workqueue and useful for
	144	* synchronous 802.15.4 drivers.
	145	* This function should return zero or negative errno.
	146	*
1e7283a2 AA	147	* WARNING:
	148	* This will be deprecated soon. We don't accept synced xmit callbacks
	149	* drivers anymore.
	150	*
ed0a5dce AA	151	* xmit_async:
ed0a5dce AA	152	* Handler that 802.15.4 module calls for each transmitted frame.
0afd7ad9	153	* skb cntains the buffer starting from the IEEE 802.15.4 header.
	154	* The low-level driver should send the frame based on available
	155	* configuration.
dc67c6b3	156	* This function should return zero or negative errno.
0afd7ad9	157	*
	158	* ed: Handler that 802.15.4 module calls for Energy Detection.
	159	* This function should place the value for detected energy
	160	* (usually device-dependant) in the level pointer and return
	161	* either zero or negative errno. Called with pib_lock held.
	162	*
	163	* set_channel:
	164	* Set radio for listening on specific channel.
	165	* Set the device for listening on specified channel.
	166	* Returns either zero, or negative errno. Called with pib_lock held.
	167	*
	168	* set_hw_addr_filt:
	169	* Set radio for listening on specific address.
	170	* Set the device for listening on specified address.
	171	* Returns either zero, or negative errno.
9b2777d6 PB	172	*
	173	* set_txpower:
	174	* Set radio transmit power in dB. Called with pib_lock held.
	175	* Returns either zero, or negative errno.
84dda3c6 PB	176	*
	177	* set_lbt
	178	* Enables or disables listen before talk on the device. Called with
	179	* pib_lock held.
	180	* Returns either zero, or negative errno.
ba08fea5 PB	181	*
	182	* set_cca_mode
	183	* Sets the CCA mode used by the device. Called with pib_lock held.
	184	* Returns either zero, or negative errno.
6ca00197 PB	185	*
	186	* set_cca_ed_level
	187	* Sets the CCA energy detection threshold in dBm. Called with pib_lock
	188	* held.
	189	* Returns either zero, or negative errno.
4244db1b PB	190	*
	191	* set_csma_params
	192	* Sets the CSMA parameter set for the PHY. Called with pib_lock held.
	193	* Returns either zero, or negative errno.
	194	*
	195	* set_frame_retries
	196	* Sets the retransmission attempt limit. Called with pib_lock held.
	197	* Returns either zero, or negative errno.
94b79222 AA	198	*
	199	* set_promiscuous_mode
	200	* Enables or disable promiscuous mode.
0afd7ad9	201	*/
	202	struct ieee802154_ops {
	203	struct module *owner;
5a504397 AA	204	int (start)(struct ieee802154_hw hw);
5a504397 AA	205	void (stop)(struct ieee802154_hw hw);
ed0a5dce AA	206	int (xmit_sync)(struct ieee802154_hw hw,
	207	struct sk_buff *skb);
	208	int (xmit_async)(struct ieee802154_hw hw,
	209	struct sk_buff *skb);
5a504397	210	int (ed)(struct ieee802154_hw hw, u8 *level);
e37d2ec8 AA	211	int (set_channel)(struct ieee802154_hw hw, u8 page,
e37d2ec8 AA	212	u8 channel);
5a504397 AA	213	int (set_hw_addr_filt)(struct ieee802154_hw hw,
5a504397 AA	214	struct ieee802154_hw_addr_filt *filt,
0afd7ad9	215	unsigned long changed);
23310f6f	216	int (set_txpower)(struct ieee802154_hw hw, s8 dbm);
5a504397	217	int (set_lbt)(struct ieee802154_hw hw, bool on);
7fe9a388 AA	218	int (set_cca_mode)(struct ieee802154_hw hw,
7fe9a388 AA	219	const struct wpan_phy_cca *cca);
5a504397	220	int (set_cca_ed_level)(struct ieee802154_hw hw,
6ca00197	221	s32 level);
5a504397	222	int (set_csma_params)(struct ieee802154_hw hw,
4244db1b	223	u8 min_be, u8 max_be, u8 retries);
5a504397	224	int (set_frame_retries)(struct ieee802154_hw hw,
4244db1b	225	s8 retries);
94b79222 AA	226	int (set_promiscuous_mode)(struct ieee802154_hw hw,
94b79222 AA	227	const bool on);
0afd7ad9	228	};
0afd7ad9	229
ab24f50f	230	/**
705cbbbe AA	231	* ieee802154_be64_to_le64 - copies and convert be64 to le64
	232	* @le64_dst: le64 destination pointer
	233	* @be64_src: be64 source pointer
ab24f50f	234	*/
705cbbbe	235	static inline void ieee802154_be64_to_le64(void le64_dst, const void be64_src)
ab24f50f	236	{
ba5bf17e	237	__put_unaligned_memmove64(swab64p(be64_src), le64_dst);
ab24f50f AA	238	}
ab24f50f AA	239
239a84a9 AA	240	/**
	241	* ieee802154_le64_to_be64 - copies and convert le64 to be64
	242	* @be64_dst: be64 destination pointer
	243	* @le64_src: le64 source pointer
	244	*/
	245	static inline void ieee802154_le64_to_be64(void be64_dst, const void le64_src)
	246	{
b9767969	247	__put_unaligned_memmove64(swab64p(le64_src), be64_dst);
239a84a9 AA	248	}
239a84a9 AA	249
94910d41	250	/* Basic interface to register ieee802154 device */
5a504397	251	struct ieee802154_hw *
16301861	252	ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops);
5a504397 AA	253	void ieee802154_free_hw(struct ieee802154_hw *hw);
	254	int ieee802154_register_hw(struct ieee802154_hw *hw);
	255	void ieee802154_unregister_hw(struct ieee802154_hw *hw);
1010f540	256
c5c47e67	257	void ieee802154_rx(struct ieee802154_hw hw, struct sk_buff skb);
5a504397	258	void ieee802154_rx_irqsafe(struct ieee802154_hw hw, struct sk_buff skb,
1cd829c8	259	u8 lqi);
1cd829c8	260
c2085103 AA	261	void ieee802154_wake_queue(struct ieee802154_hw *hw);
c2085103 AA	262	void ieee802154_stop_queue(struct ieee802154_hw *hw);
61f2dcba AA	263	void ieee802154_xmit_complete(struct ieee802154_hw hw, struct sk_buff skb,
61f2dcba AA	264	bool ifs_handling);
c2085103	265
0afd7ad9	266	#endif /* NET_MAC802154_H */