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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 *
15 */
16#ifndef NET_MAC802154_H
17#define NET_MAC802154_H
18
19#include <asm/unaligned.h>
20#include <net/af_ieee802154.h>
21#include <linux/ieee802154.h>
22#include <linux/skbuff.h>
23
24#include <net/cfg802154.h>
25
26/**
27 * enum ieee802154_hw_addr_filt_flags - hardware address filtering flags
28 *
29 * The following flags are used to indicate changed address settings from
30 * the stack to the hardware.
31 *
32 * @IEEE802154_AFILT_SADDR_CHANGED: Indicates that the short address will be
33 * change.
34 *
35 * @IEEE802154_AFILT_IEEEADDR_CHANGED: Indicates that the extended address
36 * will be change.
37 *
38 * @IEEE802154_AFILT_PANID_CHANGED: Indicates that the pan id will be change.
39 *
40 * @IEEE802154_AFILT_PANC_CHANGED: Indicates that the address filter will
41 * do frame address filtering as a pan coordinator.
42 */
43enum ieee802154_hw_addr_filt_flags {
44 IEEE802154_AFILT_SADDR_CHANGED = BIT(0),
45 IEEE802154_AFILT_IEEEADDR_CHANGED = BIT(1),
46 IEEE802154_AFILT_PANID_CHANGED = BIT(2),
47 IEEE802154_AFILT_PANC_CHANGED = BIT(3),
48};
49
50/**
51 * struct ieee802154_hw_addr_filt - hardware address filtering settings
52 *
53 * @pan_id: pan_id which should be set to the hardware address filter.
54 *
55 * @short_addr: short_addr which should be set to the hardware address filter.
56 *
57 * @ieee_addr: extended address which should be set to the hardware address
58 * filter.
59 *
60 * @pan_coord: boolean if hardware filtering should be operate as coordinator.
61 */
62struct ieee802154_hw_addr_filt {
63 __le16 pan_id;
64 __le16 short_addr;
65 __le64 ieee_addr;
66 bool pan_coord;
67};
68
69/**
70 * struct ieee802154_hw - ieee802154 hardware
71 *
72 * @extra_tx_headroom: headroom to reserve in each transmit skb for use by the
73 * driver (e.g. for transmit headers.)
74 *
75 * @flags: hardware flags, see &enum ieee802154_hw_flags
76 *
77 * @parent: parent device of the hardware.
78 *
79 * @priv: pointer to private area that was allocated for driver use along with
80 * this structure.
81 *
82 * @phy: This points to the &struct wpan_phy allocated for this 802.15.4 PHY.
83 */
84struct ieee802154_hw {
85 /* filled by the driver */
86 int extra_tx_headroom;
87 u32 flags;
88 struct device *parent;
89 void *priv;
90
91 /* filled by mac802154 core */
92 struct wpan_phy *phy;
93};
94
95/**
96 * enum ieee802154_hw_flags - hardware flags
97 *
98 * These flags are used to indicate hardware capabilities to
99 * the stack. Generally, flags here should have their meaning
100 * done in a way that the simplest hardware doesn't need setting
101 * any particular flags. There are some exceptions to this rule,
102 * however, so you are advised to review these flags carefully.
103 *
104 * @IEEE802154_HW_TX_OMIT_CKSUM: Indicates that xmitter will add FCS on it's
105 * own.
106 *
107 * @IEEE802154_HW_LBT: Indicates that transceiver will support listen before
108 * transmit.
109 *
110 * @IEEE802154_HW_CSMA_PARAMS: Indicates that transceiver will support csma
111 * parameters (max_be, min_be, backoff exponents).
112 *
113 * @IEEE802154_HW_FRAME_RETRIES: Indicates that transceiver will support ARET
114 * frame retries setting.
115 *
116 * @IEEE802154_HW_AFILT: Indicates that transceiver will support hardware
117 * address filter setting.
118 *
119 * @IEEE802154_HW_PROMISCUOUS: Indicates that transceiver will support
120 * promiscuous mode setting.
121 *
122 * @IEEE802154_HW_RX_OMIT_CKSUM: Indicates that receiver omits FCS.
123 *
124 * @IEEE802154_HW_RX_DROP_BAD_CKSUM: Indicates that receiver will not filter
125 * frames with bad checksum.
126 */
127enum ieee802154_hw_flags {
128 IEEE802154_HW_TX_OMIT_CKSUM = BIT(0),
129 IEEE802154_HW_LBT = BIT(1),
130 IEEE802154_HW_CSMA_PARAMS = BIT(2),
131 IEEE802154_HW_FRAME_RETRIES = BIT(3),
132 IEEE802154_HW_AFILT = BIT(4),
133 IEEE802154_HW_PROMISCUOUS = BIT(5),
134 IEEE802154_HW_RX_OMIT_CKSUM = BIT(6),
135 IEEE802154_HW_RX_DROP_BAD_CKSUM = BIT(7),
136};
137
138/* Indicates that receiver omits FCS and xmitter will add FCS on it's own. */
139#define IEEE802154_HW_OMIT_CKSUM (IEEE802154_HW_TX_OMIT_CKSUM | \
140 IEEE802154_HW_RX_OMIT_CKSUM)
141
142/* struct ieee802154_ops - callbacks from mac802154 to the driver
143 *
144 * This structure contains various callbacks that the driver may
145 * handle or, in some cases, must handle, for example to transmit
146 * a frame.
147 *
148 * start: Handler that 802.15.4 module calls for device initialization.
149 * This function is called before the first interface is attached.
150 *
151 * stop: Handler that 802.15.4 module calls for device cleanup.
152 * This function is called after the last interface is removed.
153 *
154 * xmit_sync:
155 * Handler that 802.15.4 module calls for each transmitted frame.
156 * skb cntains the buffer starting from the IEEE 802.15.4 header.
157 * The low-level driver should send the frame based on available
158 * configuration. This is called by a workqueue and useful for
159 * synchronous 802.15.4 drivers.
160 * This function should return zero or negative errno.
161 *
162 * WARNING:
163 * This will be deprecated soon. We don't accept synced xmit callbacks
164 * drivers anymore.
165 *
166 * xmit_async:
167 * Handler that 802.15.4 module calls for each transmitted frame.
168 * skb cntains the buffer starting from the IEEE 802.15.4 header.
169 * The low-level driver should send the frame based on available
170 * configuration.
171 * This function should return zero or negative errno.
172 *
173 * ed: Handler that 802.15.4 module calls for Energy Detection.
174 * This function should place the value for detected energy
175 * (usually device-dependant) in the level pointer and return
176 * either zero or negative errno. Called with pib_lock held.
177 *
178 * set_channel:
179 * Set radio for listening on specific channel.
180 * Set the device for listening on specified channel.
181 * Returns either zero, or negative errno. Called with pib_lock held.
182 *
183 * set_hw_addr_filt:
184 * Set radio for listening on specific address.
185 * Set the device for listening on specified address.
186 * Returns either zero, or negative errno.
187 *
188 * set_txpower:
189 * Set radio transmit power in mBm. Called with pib_lock held.
190 * Returns either zero, or negative errno.
191 *
192 * set_lbt
193 * Enables or disables listen before talk on the device. Called with
194 * pib_lock held.
195 * Returns either zero, or negative errno.
196 *
197 * set_cca_mode
198 * Sets the CCA mode used by the device. Called with pib_lock held.
199 * Returns either zero, or negative errno.
200 *
201 * set_cca_ed_level
202 * Sets the CCA energy detection threshold in mBm. Called with pib_lock
203 * held.
204 * Returns either zero, or negative errno.
205 *
206 * set_csma_params
207 * Sets the CSMA parameter set for the PHY. Called with pib_lock held.
208 * Returns either zero, or negative errno.
209 *
210 * set_frame_retries
211 * Sets the retransmission attempt limit. Called with pib_lock held.
212 * Returns either zero, or negative errno.
213 *
214 * set_promiscuous_mode
215 * Enables or disable promiscuous mode.
216 */
217struct ieee802154_ops {
218 struct module *owner;
219 int (*start)(struct ieee802154_hw *hw);
220 void (*stop)(struct ieee802154_hw *hw);
221 int (*xmit_sync)(struct ieee802154_hw *hw,
222 struct sk_buff *skb);
223 int (*xmit_async)(struct ieee802154_hw *hw,
224 struct sk_buff *skb);
225 int (*ed)(struct ieee802154_hw *hw, u8 *level);
226 int (*set_channel)(struct ieee802154_hw *hw, u8 page,
227 u8 channel);
228 int (*set_hw_addr_filt)(struct ieee802154_hw *hw,
229 struct ieee802154_hw_addr_filt *filt,
230 unsigned long changed);
231 int (*set_txpower)(struct ieee802154_hw *hw, s32 mbm);
232 int (*set_lbt)(struct ieee802154_hw *hw, bool on);
233 int (*set_cca_mode)(struct ieee802154_hw *hw,
234 const struct wpan_phy_cca *cca);
235 int (*set_cca_ed_level)(struct ieee802154_hw *hw, s32 mbm);
236 int (*set_csma_params)(struct ieee802154_hw *hw,
237 u8 min_be, u8 max_be, u8 retries);
238 int (*set_frame_retries)(struct ieee802154_hw *hw,
239 s8 retries);
240 int (*set_promiscuous_mode)(struct ieee802154_hw *hw,
241 const bool on);
242};
243
244/**
245 * ieee802154_get_fc_from_skb - get the frame control field from an skb
246 * @skb: skb where the frame control field will be get from
247 */
248static inline __le16 ieee802154_get_fc_from_skb(const struct sk_buff *skb)
249{
250 /* check if we can fc at skb_mac_header of sk buffer */
251 if (unlikely(!skb_mac_header_was_set(skb) ||
252 (skb_tail_pointer(skb) - skb_mac_header(skb)) < 2)) {
253 WARN_ON(1);
254 return cpu_to_le16(0);
255 }
256
257 return get_unaligned_le16(skb_mac_header(skb));
258}
259
260/**
261 * ieee802154_be64_to_le64 - copies and convert be64 to le64
262 * @le64_dst: le64 destination pointer
263 * @be64_src: be64 source pointer
264 */
265static inline void ieee802154_be64_to_le64(void *le64_dst, const void *be64_src)
266{
267 put_unaligned_le64(get_unaligned_be64(be64_src), le64_dst);
268}
269
270/**
271 * ieee802154_le64_to_be64 - copies and convert le64 to be64
272 * @be64_dst: be64 destination pointer
273 * @le64_src: le64 source pointer
274 */
275static inline void ieee802154_le64_to_be64(void *be64_dst, const void *le64_src)
276{
277 put_unaligned_be64(get_unaligned_le64(le64_src), be64_dst);
278}
279
280/**
281 * ieee802154_le16_to_be16 - copies and convert le16 to be16
282 * @be16_dst: be16 destination pointer
283 * @le16_src: le16 source pointer
284 */
285static inline void ieee802154_le16_to_be16(void *be16_dst, const void *le16_src)
286{
287 put_unaligned_be16(get_unaligned_le16(le16_src), be16_dst);
288}
289
290/**
291 * ieee802154_alloc_hw - Allocate a new hardware device
292 *
293 * This must be called once for each hardware device. The returned pointer
294 * must be used to refer to this device when calling other functions.
295 * mac802154 allocates a private data area for the driver pointed to by
296 * @priv in &struct ieee802154_hw, the size of this area is given as
297 * @priv_data_len.
298 *
299 * @priv_data_len: length of private data
300 * @ops: callbacks for this device
301 *
302 * Return: A pointer to the new hardware device, or %NULL on error.
303 */
304struct ieee802154_hw *
305ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops);
306
307/**
308 * ieee802154_free_hw - free hardware descriptor
309 *
310 * This function frees everything that was allocated, including the
311 * private data for the driver. You must call ieee802154_unregister_hw()
312 * before calling this function.
313 *
314 * @hw: the hardware to free
315 */
316void ieee802154_free_hw(struct ieee802154_hw *hw);
317
318/**
319 * ieee802154_register_hw - Register hardware device
320 *
321 * You must call this function before any other functions in
322 * mac802154. Note that before a hardware can be registered, you
323 * need to fill the contained wpan_phy's information.
324 *
325 * @hw: the device to register as returned by ieee802154_alloc_hw()
326 *
327 * Return: 0 on success. An error code otherwise.
328 */
329int ieee802154_register_hw(struct ieee802154_hw *hw);
330
331/**
332 * ieee802154_unregister_hw - Unregister a hardware device
333 *
334 * This function instructs mac802154 to free allocated resources
335 * and unregister netdevices from the networking subsystem.
336 *
337 * @hw: the hardware to unregister
338 */
339void ieee802154_unregister_hw(struct ieee802154_hw *hw);
340
341/**
342 * ieee802154_rx_irqsafe - receive frame
343 *
344 * Like ieee802154_rx() but can be called in IRQ context
345 * (internally defers to a tasklet.)
346 *
347 * @hw: the hardware this frame came in on
348 * @skb: the buffer to receive, owned by mac802154 after this call
349 * @lqi: link quality indicator
350 */
351void ieee802154_rx_irqsafe(struct ieee802154_hw *hw, struct sk_buff *skb,
352 u8 lqi);
353/**
354 * ieee802154_wake_queue - wake ieee802154 queue
355 * @hw: pointer as obtained from ieee802154_alloc_hw().
356 *
357 * Drivers should use this function instead of netif_wake_queue.
358 */
359void ieee802154_wake_queue(struct ieee802154_hw *hw);
360
361/**
362 * ieee802154_stop_queue - stop ieee802154 queue
363 * @hw: pointer as obtained from ieee802154_alloc_hw().
364 *
365 * Drivers should use this function instead of netif_stop_queue.
366 */
367void ieee802154_stop_queue(struct ieee802154_hw *hw);
368
369/**
370 * ieee802154_xmit_complete - frame transmission complete
371 *
372 * @hw: pointer as obtained from ieee802154_alloc_hw().
373 * @skb: buffer for transmission
374 * @ifs_handling: indicate interframe space handling
375 */
376void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
377 bool ifs_handling);
378
379#endif /* NET_MAC802154_H */
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * IEEE802.15.4-2003 specification
4 *
5 * Copyright (C) 2007-2012 Siemens AG
6 */
7#ifndef NET_MAC802154_H
8#define NET_MAC802154_H
9
10#include <asm/unaligned.h>
11#include <net/af_ieee802154.h>
12#include <linux/ieee802154.h>
13#include <linux/skbuff.h>
14
15#include <net/cfg802154.h>
16
17/**
18 * enum ieee802154_hw_addr_filt_flags - hardware address filtering flags
19 *
20 * The following flags are used to indicate changed address settings from
21 * the stack to the hardware.
22 *
23 * @IEEE802154_AFILT_SADDR_CHANGED: Indicates that the short address will be
24 * change.
25 *
26 * @IEEE802154_AFILT_IEEEADDR_CHANGED: Indicates that the extended address
27 * will be change.
28 *
29 * @IEEE802154_AFILT_PANID_CHANGED: Indicates that the pan id will be change.
30 *
31 * @IEEE802154_AFILT_PANC_CHANGED: Indicates that the address filter will
32 * do frame address filtering as a pan coordinator.
33 */
34enum ieee802154_hw_addr_filt_flags {
35 IEEE802154_AFILT_SADDR_CHANGED = BIT(0),
36 IEEE802154_AFILT_IEEEADDR_CHANGED = BIT(1),
37 IEEE802154_AFILT_PANID_CHANGED = BIT(2),
38 IEEE802154_AFILT_PANC_CHANGED = BIT(3),
39};
40
41/**
42 * struct ieee802154_hw_addr_filt - hardware address filtering settings
43 *
44 * @pan_id: pan_id which should be set to the hardware address filter.
45 *
46 * @short_addr: short_addr which should be set to the hardware address filter.
47 *
48 * @ieee_addr: extended address which should be set to the hardware address
49 * filter.
50 *
51 * @pan_coord: boolean if hardware filtering should be operate as coordinator.
52 */
53struct ieee802154_hw_addr_filt {
54 __le16 pan_id;
55 __le16 short_addr;
56 __le64 ieee_addr;
57 bool pan_coord;
58};
59
60/**
61 * struct ieee802154_hw - ieee802154 hardware
62 *
63 * @extra_tx_headroom: headroom to reserve in each transmit skb for use by the
64 * driver (e.g. for transmit headers.)
65 *
66 * @flags: hardware flags, see &enum ieee802154_hw_flags
67 *
68 * @parent: parent device of the hardware.
69 *
70 * @priv: pointer to private area that was allocated for driver use along with
71 * this structure.
72 *
73 * @phy: This points to the &struct wpan_phy allocated for this 802.15.4 PHY.
74 */
75struct ieee802154_hw {
76 /* filled by the driver */
77 int extra_tx_headroom;
78 u32 flags;
79 struct device *parent;
80 void *priv;
81
82 /* filled by mac802154 core */
83 struct wpan_phy *phy;
84};
85
86/**
87 * enum ieee802154_hw_flags - hardware flags
88 *
89 * These flags are used to indicate hardware capabilities to
90 * the stack. Generally, flags here should have their meaning
91 * done in a way that the simplest hardware doesn't need setting
92 * any particular flags. There are some exceptions to this rule,
93 * however, so you are advised to review these flags carefully.
94 *
95 * @IEEE802154_HW_TX_OMIT_CKSUM: Indicates that xmitter will add FCS on it's
96 * own.
97 *
98 * @IEEE802154_HW_LBT: Indicates that transceiver will support listen before
99 * transmit.
100 *
101 * @IEEE802154_HW_CSMA_PARAMS: Indicates that transceiver will support csma
102 * parameters (max_be, min_be, backoff exponents).
103 *
104 * @IEEE802154_HW_FRAME_RETRIES: Indicates that transceiver will support ARET
105 * frame retries setting.
106 *
107 * @IEEE802154_HW_AFILT: Indicates that transceiver will support hardware
108 * address filter setting.
109 *
110 * @IEEE802154_HW_PROMISCUOUS: Indicates that transceiver will support
111 * promiscuous mode setting.
112 *
113 * @IEEE802154_HW_RX_OMIT_CKSUM: Indicates that receiver omits FCS.
114 */
115enum ieee802154_hw_flags {
116 IEEE802154_HW_TX_OMIT_CKSUM = BIT(0),
117 IEEE802154_HW_LBT = BIT(1),
118 IEEE802154_HW_CSMA_PARAMS = BIT(2),
119 IEEE802154_HW_FRAME_RETRIES = BIT(3),
120 IEEE802154_HW_AFILT = BIT(4),
121 IEEE802154_HW_PROMISCUOUS = BIT(5),
122 IEEE802154_HW_RX_OMIT_CKSUM = BIT(6),
123};
124
125/* Indicates that receiver omits FCS and xmitter will add FCS on it's own. */
126#define IEEE802154_HW_OMIT_CKSUM (IEEE802154_HW_TX_OMIT_CKSUM | \
127 IEEE802154_HW_RX_OMIT_CKSUM)
128
129/* struct ieee802154_ops - callbacks from mac802154 to the driver
130 *
131 * This structure contains various callbacks that the driver may
132 * handle or, in some cases, must handle, for example to transmit
133 * a frame.
134 *
135 * start: Handler that 802.15.4 module calls for device initialization.
136 * This function is called before the first interface is attached.
137 *
138 * stop: Handler that 802.15.4 module calls for device cleanup.
139 * This function is called after the last interface is removed.
140 *
141 * xmit_sync:
142 * Handler that 802.15.4 module calls for each transmitted frame.
143 * skb cntains the buffer starting from the IEEE 802.15.4 header.
144 * The low-level driver should send the frame based on available
145 * configuration. This is called by a workqueue and useful for
146 * synchronous 802.15.4 drivers.
147 * This function should return zero or negative errno.
148 *
149 * WARNING:
150 * This will be deprecated soon. We don't accept synced xmit callbacks
151 * drivers anymore.
152 *
153 * xmit_async:
154 * Handler that 802.15.4 module calls for each transmitted frame.
155 * skb cntains the buffer starting from the IEEE 802.15.4 header.
156 * The low-level driver should send the frame based on available
157 * configuration.
158 * This function should return zero or negative errno.
159 *
160 * ed: Handler that 802.15.4 module calls for Energy Detection.
161 * This function should place the value for detected energy
162 * (usually device-dependant) in the level pointer and return
163 * either zero or negative errno. Called with pib_lock held.
164 *
165 * set_channel:
166 * Set radio for listening on specific channel.
167 * Set the device for listening on specified channel.
168 * Returns either zero, or negative errno. Called with pib_lock held.
169 *
170 * set_hw_addr_filt:
171 * Set radio for listening on specific address.
172 * Set the device for listening on specified address.
173 * Returns either zero, or negative errno.
174 *
175 * set_txpower:
176 * Set radio transmit power in mBm. Called with pib_lock held.
177 * Returns either zero, or negative errno.
178 *
179 * set_lbt
180 * Enables or disables listen before talk on the device. Called with
181 * pib_lock held.
182 * Returns either zero, or negative errno.
183 *
184 * set_cca_mode
185 * Sets the CCA mode used by the device. Called with pib_lock held.
186 * Returns either zero, or negative errno.
187 *
188 * set_cca_ed_level
189 * Sets the CCA energy detection threshold in mBm. Called with pib_lock
190 * held.
191 * Returns either zero, or negative errno.
192 *
193 * set_csma_params
194 * Sets the CSMA parameter set for the PHY. Called with pib_lock held.
195 * Returns either zero, or negative errno.
196 *
197 * set_frame_retries
198 * Sets the retransmission attempt limit. Called with pib_lock held.
199 * Returns either zero, or negative errno.
200 *
201 * set_promiscuous_mode
202 * Enables or disable promiscuous mode.
203 */
204struct ieee802154_ops {
205 struct module *owner;
206 int (*start)(struct ieee802154_hw *hw);
207 void (*stop)(struct ieee802154_hw *hw);
208 int (*xmit_sync)(struct ieee802154_hw *hw,
209 struct sk_buff *skb);
210 int (*xmit_async)(struct ieee802154_hw *hw,
211 struct sk_buff *skb);
212 int (*ed)(struct ieee802154_hw *hw, u8 *level);
213 int (*set_channel)(struct ieee802154_hw *hw, u8 page,
214 u8 channel);
215 int (*set_hw_addr_filt)(struct ieee802154_hw *hw,
216 struct ieee802154_hw_addr_filt *filt,
217 unsigned long changed);
218 int (*set_txpower)(struct ieee802154_hw *hw, s32 mbm);
219 int (*set_lbt)(struct ieee802154_hw *hw, bool on);
220 int (*set_cca_mode)(struct ieee802154_hw *hw,
221 const struct wpan_phy_cca *cca);
222 int (*set_cca_ed_level)(struct ieee802154_hw *hw, s32 mbm);
223 int (*set_csma_params)(struct ieee802154_hw *hw,
224 u8 min_be, u8 max_be, u8 retries);
225 int (*set_frame_retries)(struct ieee802154_hw *hw,
226 s8 retries);
227 int (*set_promiscuous_mode)(struct ieee802154_hw *hw,
228 const bool on);
229};
230
231/**
232 * ieee802154_get_fc_from_skb - get the frame control field from an skb
233 * @skb: skb where the frame control field will be get from
234 */
235static inline __le16 ieee802154_get_fc_from_skb(const struct sk_buff *skb)
236{
237 __le16 fc;
238
239 /* check if we can fc at skb_mac_header of sk buffer */
240 if (WARN_ON(!skb_mac_header_was_set(skb) ||
241 (skb_tail_pointer(skb) -
242 skb_mac_header(skb)) < IEEE802154_FC_LEN))
243 return cpu_to_le16(0);
244
245 memcpy(&fc, skb_mac_header(skb), IEEE802154_FC_LEN);
246 return fc;
247}
248
249/**
250 * ieee802154_skb_dst_pan - get the pointer to destination pan field
251 * @fc: mac header frame control field
252 * @skb: skb where the destination pan pointer will be get from
253 */
254static inline unsigned char *ieee802154_skb_dst_pan(__le16 fc,
255 const struct sk_buff *skb)
256{
257 unsigned char *dst_pan;
258
259 switch (ieee802154_daddr_mode(fc)) {
260 case cpu_to_le16(IEEE802154_FCTL_ADDR_NONE):
261 dst_pan = NULL;
262 break;
263 case cpu_to_le16(IEEE802154_FCTL_DADDR_SHORT):
264 case cpu_to_le16(IEEE802154_FCTL_DADDR_EXTENDED):
265 dst_pan = skb_mac_header(skb) +
266 IEEE802154_FC_LEN +
267 IEEE802154_SEQ_LEN;
268 break;
269 default:
270 WARN_ONCE(1, "invalid addr mode detected");
271 dst_pan = NULL;
272 break;
273 }
274
275 return dst_pan;
276}
277
278/**
279 * ieee802154_skb_src_pan - get the pointer to source pan field
280 * @fc: mac header frame control field
281 * @skb: skb where the source pan pointer will be get from
282 */
283static inline unsigned char *ieee802154_skb_src_pan(__le16 fc,
284 const struct sk_buff *skb)
285{
286 unsigned char *src_pan;
287
288 switch (ieee802154_saddr_mode(fc)) {
289 case cpu_to_le16(IEEE802154_FCTL_ADDR_NONE):
290 src_pan = NULL;
291 break;
292 case cpu_to_le16(IEEE802154_FCTL_SADDR_SHORT):
293 case cpu_to_le16(IEEE802154_FCTL_SADDR_EXTENDED):
294 /* if intra-pan and source addr mode is non none,
295 * then source pan id is equal destination pan id.
296 */
297 if (ieee802154_is_intra_pan(fc)) {
298 src_pan = ieee802154_skb_dst_pan(fc, skb);
299 break;
300 }
301
302 switch (ieee802154_daddr_mode(fc)) {
303 case cpu_to_le16(IEEE802154_FCTL_ADDR_NONE):
304 src_pan = skb_mac_header(skb) +
305 IEEE802154_FC_LEN +
306 IEEE802154_SEQ_LEN;
307 break;
308 case cpu_to_le16(IEEE802154_FCTL_DADDR_SHORT):
309 src_pan = skb_mac_header(skb) +
310 IEEE802154_FC_LEN +
311 IEEE802154_SEQ_LEN +
312 IEEE802154_PAN_ID_LEN +
313 IEEE802154_SHORT_ADDR_LEN;
314 break;
315 case cpu_to_le16(IEEE802154_FCTL_DADDR_EXTENDED):
316 src_pan = skb_mac_header(skb) +
317 IEEE802154_FC_LEN +
318 IEEE802154_SEQ_LEN +
319 IEEE802154_PAN_ID_LEN +
320 IEEE802154_EXTENDED_ADDR_LEN;
321 break;
322 default:
323 WARN_ONCE(1, "invalid addr mode detected");
324 src_pan = NULL;
325 break;
326 }
327 break;
328 default:
329 WARN_ONCE(1, "invalid addr mode detected");
330 src_pan = NULL;
331 break;
332 }
333
334 return src_pan;
335}
336
337/**
338 * ieee802154_skb_is_intra_pan_addressing - checks whenever the mac addressing
339 * is an intra pan communication
340 * @fc: mac header frame control field
341 * @skb: skb where the source and destination pan should be get from
342 */
343static inline bool ieee802154_skb_is_intra_pan_addressing(__le16 fc,
344 const struct sk_buff *skb)
345{
346 unsigned char *dst_pan = ieee802154_skb_dst_pan(fc, skb),
347 *src_pan = ieee802154_skb_src_pan(fc, skb);
348
349 /* if one is NULL is no intra pan addressing */
350 if (!dst_pan || !src_pan)
351 return false;
352
353 return !memcmp(dst_pan, src_pan, IEEE802154_PAN_ID_LEN);
354}
355
356/**
357 * ieee802154_be64_to_le64 - copies and convert be64 to le64
358 * @le64_dst: le64 destination pointer
359 * @be64_src: be64 source pointer
360 */
361static inline void ieee802154_be64_to_le64(void *le64_dst, const void *be64_src)
362{
363 put_unaligned_le64(get_unaligned_be64(be64_src), le64_dst);
364}
365
366/**
367 * ieee802154_le64_to_be64 - copies and convert le64 to be64
368 * @be64_dst: be64 destination pointer
369 * @le64_src: le64 source pointer
370 */
371static inline void ieee802154_le64_to_be64(void *be64_dst, const void *le64_src)
372{
373 put_unaligned_be64(get_unaligned_le64(le64_src), be64_dst);
374}
375
376/**
377 * ieee802154_le16_to_be16 - copies and convert le16 to be16
378 * @be16_dst: be16 destination pointer
379 * @le16_src: le16 source pointer
380 */
381static inline void ieee802154_le16_to_be16(void *be16_dst, const void *le16_src)
382{
383 put_unaligned_be16(get_unaligned_le16(le16_src), be16_dst);
384}
385
386/**
387 * ieee802154_be16_to_le16 - copies and convert be16 to le16
388 * @le16_dst: le16 destination pointer
389 * @be16_src: be16 source pointer
390 */
391static inline void ieee802154_be16_to_le16(void *le16_dst, const void *be16_src)
392{
393 put_unaligned_le16(get_unaligned_be16(be16_src), le16_dst);
394}
395
396/**
397 * ieee802154_alloc_hw - Allocate a new hardware device
398 *
399 * This must be called once for each hardware device. The returned pointer
400 * must be used to refer to this device when calling other functions.
401 * mac802154 allocates a private data area for the driver pointed to by
402 * @priv in &struct ieee802154_hw, the size of this area is given as
403 * @priv_data_len.
404 *
405 * @priv_data_len: length of private data
406 * @ops: callbacks for this device
407 *
408 * Return: A pointer to the new hardware device, or %NULL on error.
409 */
410struct ieee802154_hw *
411ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops);
412
413/**
414 * ieee802154_free_hw - free hardware descriptor
415 *
416 * This function frees everything that was allocated, including the
417 * private data for the driver. You must call ieee802154_unregister_hw()
418 * before calling this function.
419 *
420 * @hw: the hardware to free
421 */
422void ieee802154_free_hw(struct ieee802154_hw *hw);
423
424/**
425 * ieee802154_register_hw - Register hardware device
426 *
427 * You must call this function before any other functions in
428 * mac802154. Note that before a hardware can be registered, you
429 * need to fill the contained wpan_phy's information.
430 *
431 * @hw: the device to register as returned by ieee802154_alloc_hw()
432 *
433 * Return: 0 on success. An error code otherwise.
434 */
435int ieee802154_register_hw(struct ieee802154_hw *hw);
436
437/**
438 * ieee802154_unregister_hw - Unregister a hardware device
439 *
440 * This function instructs mac802154 to free allocated resources
441 * and unregister netdevices from the networking subsystem.
442 *
443 * @hw: the hardware to unregister
444 */
445void ieee802154_unregister_hw(struct ieee802154_hw *hw);
446
447/**
448 * ieee802154_rx_irqsafe - receive frame
449 *
450 * Like ieee802154_rx() but can be called in IRQ context
451 * (internally defers to a tasklet.)
452 *
453 * @hw: the hardware this frame came in on
454 * @skb: the buffer to receive, owned by mac802154 after this call
455 * @lqi: link quality indicator
456 */
457void ieee802154_rx_irqsafe(struct ieee802154_hw *hw, struct sk_buff *skb,
458 u8 lqi);
459
460/**
461 * ieee802154_xmit_complete - frame transmission complete
462 *
463 * @hw: pointer as obtained from ieee802154_alloc_hw().
464 * @skb: buffer for transmission
465 * @ifs_handling: indicate interframe space handling
466 */
467void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
468 bool ifs_handling);
469
470/**
471 * ieee802154_xmit_error - offloaded frame transmission failed
472 *
473 * @hw: pointer as obtained from ieee802154_alloc_hw().
474 * @skb: buffer for transmission
475 * @reason: error code
476 */
477void ieee802154_xmit_error(struct ieee802154_hw *hw, struct sk_buff *skb,
478 int reason);
479
480/**
481 * ieee802154_xmit_hw_error - frame could not be offloaded to the transmitter
482 * because of a hardware error (bus error, timeout, etc)
483 *
484 * @hw: pointer as obtained from ieee802154_alloc_hw().
485 * @skb: buffer for transmission
486 */
487void ieee802154_xmit_hw_error(struct ieee802154_hw *hw, struct sk_buff *skb);
488
489#endif /* NET_MAC802154_H */