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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * An interface between IEEE802.15.4 device and rest of the kernel.
4 *
5 * Copyright (C) 2007-2012 Siemens AG
6 *
7 * Written by:
8 * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
9 * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
10 * Maxim Osipov <maxim.osipov@siemens.com>
11 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
12 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
13 */
14
15#ifndef IEEE802154_NETDEVICE_H
16#define IEEE802154_NETDEVICE_H
17
18#define IEEE802154_REQUIRED_SIZE(struct_type, member) \
19 (offsetof(typeof(struct_type), member) + \
20 sizeof(((typeof(struct_type) *)(NULL))->member))
21
22#define IEEE802154_ADDR_OFFSET \
23 offsetof(typeof(struct sockaddr_ieee802154), addr)
24
25#define IEEE802154_MIN_NAMELEN (IEEE802154_ADDR_OFFSET + \
26 IEEE802154_REQUIRED_SIZE(struct ieee802154_addr_sa, addr_type))
27
28#define IEEE802154_NAMELEN_SHORT (IEEE802154_ADDR_OFFSET + \
29 IEEE802154_REQUIRED_SIZE(struct ieee802154_addr_sa, short_addr))
30
31#define IEEE802154_NAMELEN_LONG (IEEE802154_ADDR_OFFSET + \
32 IEEE802154_REQUIRED_SIZE(struct ieee802154_addr_sa, hwaddr))
33
34#include <net/af_ieee802154.h>
35#include <linux/netdevice.h>
36#include <linux/skbuff.h>
37#include <linux/ieee802154.h>
38
39#include <net/cfg802154.h>
40
41struct ieee802154_beacon_hdr {
42#if defined(__LITTLE_ENDIAN_BITFIELD)
43 u16 beacon_order:4,
44 superframe_order:4,
45 final_cap_slot:4,
46 battery_life_ext:1,
47 reserved0:1,
48 pan_coordinator:1,
49 assoc_permit:1;
50 u8 gts_count:3,
51 gts_reserved:4,
52 gts_permit:1;
53 u8 pend_short_addr_count:3,
54 reserved1:1,
55 pend_ext_addr_count:3,
56 reserved2:1;
57#elif defined(__BIG_ENDIAN_BITFIELD)
58 u16 assoc_permit:1,
59 pan_coordinator:1,
60 reserved0:1,
61 battery_life_ext:1,
62 final_cap_slot:4,
63 superframe_order:4,
64 beacon_order:4;
65 u8 gts_permit:1,
66 gts_reserved:4,
67 gts_count:3;
68 u8 reserved2:1,
69 pend_ext_addr_count:3,
70 reserved1:1,
71 pend_short_addr_count:3;
72#else
73#error "Please fix <asm/byteorder.h>"
74#endif
75} __packed;
76
77struct ieee802154_mac_cmd_pl {
78 u8 cmd_id;
79} __packed;
80
81struct ieee802154_sechdr {
82#if defined(__LITTLE_ENDIAN_BITFIELD)
83 u8 level:3,
84 key_id_mode:2,
85 reserved:3;
86#elif defined(__BIG_ENDIAN_BITFIELD)
87 u8 reserved:3,
88 key_id_mode:2,
89 level:3;
90#else
91#error "Please fix <asm/byteorder.h>"
92#endif
93 u8 key_id;
94 __le32 frame_counter;
95 union {
96 __le32 short_src;
97 __le64 extended_src;
98 };
99};
100
101struct ieee802154_hdr_fc {
102#if defined(__LITTLE_ENDIAN_BITFIELD)
103 u16 type:3,
104 security_enabled:1,
105 frame_pending:1,
106 ack_request:1,
107 intra_pan:1,
108 reserved:3,
109 dest_addr_mode:2,
110 version:2,
111 source_addr_mode:2;
112#elif defined(__BIG_ENDIAN_BITFIELD)
113 u16 reserved:1,
114 intra_pan:1,
115 ack_request:1,
116 frame_pending:1,
117 security_enabled:1,
118 type:3,
119 source_addr_mode:2,
120 version:2,
121 dest_addr_mode:2,
122 reserved2:2;
123#else
124#error "Please fix <asm/byteorder.h>"
125#endif
126};
127
128struct ieee802154_assoc_req_pl {
129#if defined(__LITTLE_ENDIAN_BITFIELD)
130 u8 reserved1:1,
131 device_type:1,
132 power_source:1,
133 rx_on_when_idle:1,
134 assoc_type:1,
135 reserved2:1,
136 security_cap:1,
137 alloc_addr:1;
138#elif defined(__BIG_ENDIAN_BITFIELD)
139 u8 alloc_addr:1,
140 security_cap:1,
141 reserved2:1,
142 assoc_type:1,
143 rx_on_when_idle:1,
144 power_source:1,
145 device_type:1,
146 reserved1:1;
147#else
148#error "Please fix <asm/byteorder.h>"
149#endif
150} __packed;
151
152struct ieee802154_assoc_resp_pl {
153 __le16 short_addr;
154 u8 status;
155} __packed;
156
157enum ieee802154_frame_version {
158 IEEE802154_2003_STD,
159 IEEE802154_2006_STD,
160 IEEE802154_STD,
161 IEEE802154_RESERVED_STD,
162 IEEE802154_MULTIPURPOSE_STD = IEEE802154_2003_STD,
163};
164
165enum ieee802154_addressing_mode {
166 IEEE802154_NO_ADDRESSING,
167 IEEE802154_RESERVED,
168 IEEE802154_SHORT_ADDRESSING,
169 IEEE802154_EXTENDED_ADDRESSING,
170};
171
172enum ieee802154_association_status {
173 IEEE802154_ASSOCIATION_SUCCESSFUL = 0x00,
174 IEEE802154_PAN_AT_CAPACITY = 0x01,
175 IEEE802154_PAN_ACCESS_DENIED = 0x02,
176 IEEE802154_HOPPING_SEQUENCE_OFFSET_DUP = 0x03,
177 IEEE802154_FAST_ASSOCIATION_SUCCESSFUL = 0x80,
178};
179
180enum ieee802154_disassociation_reason {
181 IEEE802154_COORD_WISHES_DEVICE_TO_LEAVE = 0x1,
182 IEEE802154_DEVICE_WISHES_TO_LEAVE = 0x2,
183};
184
185struct ieee802154_hdr {
186 struct ieee802154_hdr_fc fc;
187 u8 seq;
188 struct ieee802154_addr source;
189 struct ieee802154_addr dest;
190 struct ieee802154_sechdr sec;
191};
192
193struct ieee802154_beacon_frame {
194 struct ieee802154_hdr mhr;
195 struct ieee802154_beacon_hdr mac_pl;
196};
197
198struct ieee802154_mac_cmd_frame {
199 struct ieee802154_hdr mhr;
200 struct ieee802154_mac_cmd_pl mac_pl;
201};
202
203struct ieee802154_beacon_req_frame {
204 struct ieee802154_hdr mhr;
205 struct ieee802154_mac_cmd_pl mac_pl;
206};
207
208struct ieee802154_association_req_frame {
209 struct ieee802154_hdr mhr;
210 struct ieee802154_mac_cmd_pl mac_pl;
211 struct ieee802154_assoc_req_pl assoc_req_pl;
212};
213
214struct ieee802154_association_resp_frame {
215 struct ieee802154_hdr mhr;
216 struct ieee802154_mac_cmd_pl mac_pl;
217 struct ieee802154_assoc_resp_pl assoc_resp_pl;
218};
219
220struct ieee802154_disassociation_notif_frame {
221 struct ieee802154_hdr mhr;
222 struct ieee802154_mac_cmd_pl mac_pl;
223 u8 disassoc_pl;
224};
225
226/* pushes hdr onto the skb. fields of hdr->fc that can be calculated from
227 * the contents of hdr will be, and the actual value of those bits in
228 * hdr->fc will be ignored. this includes the INTRA_PAN bit and the frame
229 * version, if SECEN is set.
230 */
231int ieee802154_hdr_push(struct sk_buff *skb, struct ieee802154_hdr *hdr);
232
233/* pulls the entire 802.15.4 header off of the skb, including the security
234 * header, and performs pan id decompression
235 */
236int ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr);
237
238/* parses the frame control, sequence number of address fields in a given skb
239 * and stores them into hdr, performing pan id decompression and length checks
240 * to be suitable for use in header_ops.parse
241 */
242int ieee802154_hdr_peek_addrs(const struct sk_buff *skb,
243 struct ieee802154_hdr *hdr);
244
245/* parses the full 802.15.4 header a given skb and stores them into hdr,
246 * performing pan id decompression and length checks to be suitable for use in
247 * header_ops.parse
248 */
249int ieee802154_hdr_peek(const struct sk_buff *skb, struct ieee802154_hdr *hdr);
250
251/* pushes/pulls various frame types into/from an skb */
252int ieee802154_beacon_push(struct sk_buff *skb,
253 struct ieee802154_beacon_frame *beacon);
254int ieee802154_mac_cmd_push(struct sk_buff *skb, void *frame,
255 const void *pl, unsigned int pl_len);
256int ieee802154_mac_cmd_pl_pull(struct sk_buff *skb,
257 struct ieee802154_mac_cmd_pl *mac_pl);
258
259int ieee802154_max_payload(const struct ieee802154_hdr *hdr);
260
261static inline int
262ieee802154_sechdr_authtag_len(const struct ieee802154_sechdr *sec)
263{
264 switch (sec->level) {
265 case IEEE802154_SCF_SECLEVEL_MIC32:
266 case IEEE802154_SCF_SECLEVEL_ENC_MIC32:
267 return 4;
268 case IEEE802154_SCF_SECLEVEL_MIC64:
269 case IEEE802154_SCF_SECLEVEL_ENC_MIC64:
270 return 8;
271 case IEEE802154_SCF_SECLEVEL_MIC128:
272 case IEEE802154_SCF_SECLEVEL_ENC_MIC128:
273 return 16;
274 case IEEE802154_SCF_SECLEVEL_NONE:
275 case IEEE802154_SCF_SECLEVEL_ENC:
276 default:
277 return 0;
278 }
279}
280
281static inline int ieee802154_hdr_length(struct sk_buff *skb)
282{
283 struct ieee802154_hdr hdr;
284 int len = ieee802154_hdr_pull(skb, &hdr);
285
286 if (len > 0)
287 skb_push(skb, len);
288
289 return len;
290}
291
292static inline bool ieee802154_addr_equal(const struct ieee802154_addr *a1,
293 const struct ieee802154_addr *a2)
294{
295 if (a1->pan_id != a2->pan_id || a1->mode != a2->mode)
296 return false;
297
298 if ((a1->mode == IEEE802154_ADDR_LONG &&
299 a1->extended_addr != a2->extended_addr) ||
300 (a1->mode == IEEE802154_ADDR_SHORT &&
301 a1->short_addr != a2->short_addr))
302 return false;
303
304 return true;
305}
306
307static inline __le64 ieee802154_devaddr_from_raw(const void *raw)
308{
309 u64 temp;
310
311 memcpy(&temp, raw, IEEE802154_ADDR_LEN);
312 return (__force __le64)swab64(temp);
313}
314
315static inline void ieee802154_devaddr_to_raw(void *raw, __le64 addr)
316{
317 u64 temp = swab64((__force u64)addr);
318
319 memcpy(raw, &temp, IEEE802154_ADDR_LEN);
320}
321
322static inline int
323ieee802154_sockaddr_check_size(struct sockaddr_ieee802154 *daddr, int len)
324{
325 struct ieee802154_addr_sa *sa;
326 int ret = 0;
327
328 sa = &daddr->addr;
329 if (len < IEEE802154_MIN_NAMELEN)
330 return -EINVAL;
331 switch (sa->addr_type) {
332 case IEEE802154_ADDR_NONE:
333 break;
334 case IEEE802154_ADDR_SHORT:
335 if (len < IEEE802154_NAMELEN_SHORT)
336 ret = -EINVAL;
337 break;
338 case IEEE802154_ADDR_LONG:
339 if (len < IEEE802154_NAMELEN_LONG)
340 ret = -EINVAL;
341 break;
342 default:
343 ret = -EINVAL;
344 break;
345 }
346 return ret;
347}
348
349static inline void ieee802154_addr_from_sa(struct ieee802154_addr *a,
350 const struct ieee802154_addr_sa *sa)
351{
352 a->mode = sa->addr_type;
353 a->pan_id = cpu_to_le16(sa->pan_id);
354
355 switch (a->mode) {
356 case IEEE802154_ADDR_SHORT:
357 a->short_addr = cpu_to_le16(sa->short_addr);
358 break;
359 case IEEE802154_ADDR_LONG:
360 a->extended_addr = ieee802154_devaddr_from_raw(sa->hwaddr);
361 break;
362 }
363}
364
365static inline void ieee802154_addr_to_sa(struct ieee802154_addr_sa *sa,
366 const struct ieee802154_addr *a)
367{
368 sa->addr_type = a->mode;
369 sa->pan_id = le16_to_cpu(a->pan_id);
370
371 switch (a->mode) {
372 case IEEE802154_ADDR_SHORT:
373 sa->short_addr = le16_to_cpu(a->short_addr);
374 break;
375 case IEEE802154_ADDR_LONG:
376 ieee802154_devaddr_to_raw(sa->hwaddr, a->extended_addr);
377 break;
378 }
379}
380
381/*
382 * A control block of skb passed between the ARPHRD_IEEE802154 device
383 * and other stack parts.
384 */
385struct ieee802154_mac_cb {
386 u8 lqi;
387 u8 type;
388 bool ackreq;
389 bool secen;
390 bool secen_override;
391 u8 seclevel;
392 bool seclevel_override;
393 struct ieee802154_addr source;
394 struct ieee802154_addr dest;
395};
396
397static inline struct ieee802154_mac_cb *mac_cb(struct sk_buff *skb)
398{
399 return (struct ieee802154_mac_cb *)skb->cb;
400}
401
402static inline struct ieee802154_mac_cb *mac_cb_init(struct sk_buff *skb)
403{
404 BUILD_BUG_ON(sizeof(struct ieee802154_mac_cb) > sizeof(skb->cb));
405
406 memset(skb->cb, 0, sizeof(struct ieee802154_mac_cb));
407 return mac_cb(skb);
408}
409
410enum {
411 IEEE802154_LLSEC_DEVKEY_IGNORE,
412 IEEE802154_LLSEC_DEVKEY_RESTRICT,
413 IEEE802154_LLSEC_DEVKEY_RECORD,
414
415 __IEEE802154_LLSEC_DEVKEY_MAX,
416};
417
418#define IEEE802154_MAC_SCAN_ED 0
419#define IEEE802154_MAC_SCAN_ACTIVE 1
420#define IEEE802154_MAC_SCAN_PASSIVE 2
421#define IEEE802154_MAC_SCAN_ORPHAN 3
422
423struct ieee802154_mac_params {
424 s8 transmit_power;
425 u8 min_be;
426 u8 max_be;
427 u8 csma_retries;
428 s8 frame_retries;
429
430 bool lbt;
431 struct wpan_phy_cca cca;
432 s32 cca_ed_level;
433};
434
435struct wpan_phy;
436
437enum {
438 IEEE802154_LLSEC_PARAM_ENABLED = BIT(0),
439 IEEE802154_LLSEC_PARAM_FRAME_COUNTER = BIT(1),
440 IEEE802154_LLSEC_PARAM_OUT_LEVEL = BIT(2),
441 IEEE802154_LLSEC_PARAM_OUT_KEY = BIT(3),
442 IEEE802154_LLSEC_PARAM_KEY_SOURCE = BIT(4),
443 IEEE802154_LLSEC_PARAM_PAN_ID = BIT(5),
444 IEEE802154_LLSEC_PARAM_HWADDR = BIT(6),
445 IEEE802154_LLSEC_PARAM_COORD_HWADDR = BIT(7),
446 IEEE802154_LLSEC_PARAM_COORD_SHORTADDR = BIT(8),
447};
448
449struct ieee802154_llsec_ops {
450 int (*get_params)(struct net_device *dev,
451 struct ieee802154_llsec_params *params);
452 int (*set_params)(struct net_device *dev,
453 const struct ieee802154_llsec_params *params,
454 int changed);
455
456 int (*add_key)(struct net_device *dev,
457 const struct ieee802154_llsec_key_id *id,
458 const struct ieee802154_llsec_key *key);
459 int (*del_key)(struct net_device *dev,
460 const struct ieee802154_llsec_key_id *id);
461
462 int (*add_dev)(struct net_device *dev,
463 const struct ieee802154_llsec_device *llsec_dev);
464 int (*del_dev)(struct net_device *dev, __le64 dev_addr);
465
466 int (*add_devkey)(struct net_device *dev,
467 __le64 device_addr,
468 const struct ieee802154_llsec_device_key *key);
469 int (*del_devkey)(struct net_device *dev,
470 __le64 device_addr,
471 const struct ieee802154_llsec_device_key *key);
472
473 int (*add_seclevel)(struct net_device *dev,
474 const struct ieee802154_llsec_seclevel *sl);
475 int (*del_seclevel)(struct net_device *dev,
476 const struct ieee802154_llsec_seclevel *sl);
477
478 void (*lock_table)(struct net_device *dev);
479 void (*get_table)(struct net_device *dev,
480 struct ieee802154_llsec_table **t);
481 void (*unlock_table)(struct net_device *dev);
482};
483/*
484 * This should be located at net_device->ml_priv
485 *
486 * get_phy should increment the reference counting on returned phy.
487 * Use wpan_wpy_put to put that reference.
488 */
489struct ieee802154_mlme_ops {
490 /* The following fields are optional (can be NULL). */
491
492 int (*assoc_req)(struct net_device *dev,
493 struct ieee802154_addr *addr,
494 u8 channel, u8 page, u8 cap);
495 int (*assoc_resp)(struct net_device *dev,
496 struct ieee802154_addr *addr,
497 __le16 short_addr, u8 status);
498 int (*disassoc_req)(struct net_device *dev,
499 struct ieee802154_addr *addr,
500 u8 reason);
501 int (*start_req)(struct net_device *dev,
502 struct ieee802154_addr *addr,
503 u8 channel, u8 page, u8 bcn_ord, u8 sf_ord,
504 u8 pan_coord, u8 blx, u8 coord_realign);
505 int (*scan_req)(struct net_device *dev,
506 u8 type, u32 channels, u8 page, u8 duration);
507
508 int (*set_mac_params)(struct net_device *dev,
509 const struct ieee802154_mac_params *params);
510 void (*get_mac_params)(struct net_device *dev,
511 struct ieee802154_mac_params *params);
512
513 const struct ieee802154_llsec_ops *llsec;
514};
515
516static inline struct ieee802154_mlme_ops *
517ieee802154_mlme_ops(const struct net_device *dev)
518{
519 return dev->ml_priv;
520}
521
522#endif
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * An interface between IEEE802.15.4 device and rest of the kernel.
4 *
5 * Copyright (C) 2007-2012 Siemens AG
6 *
7 * Written by:
8 * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
9 * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
10 * Maxim Osipov <maxim.osipov@siemens.com>
11 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
12 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
13 */
14
15#ifndef IEEE802154_NETDEVICE_H
16#define IEEE802154_NETDEVICE_H
17
18#define IEEE802154_REQUIRED_SIZE(struct_type, member) \
19 (offsetof(typeof(struct_type), member) + \
20 sizeof(((typeof(struct_type) *)(NULL))->member))
21
22#define IEEE802154_ADDR_OFFSET \
23 offsetof(typeof(struct sockaddr_ieee802154), addr)
24
25#define IEEE802154_MIN_NAMELEN (IEEE802154_ADDR_OFFSET + \
26 IEEE802154_REQUIRED_SIZE(struct ieee802154_addr_sa, addr_type))
27
28#define IEEE802154_NAMELEN_SHORT (IEEE802154_ADDR_OFFSET + \
29 IEEE802154_REQUIRED_SIZE(struct ieee802154_addr_sa, short_addr))
30
31#define IEEE802154_NAMELEN_LONG (IEEE802154_ADDR_OFFSET + \
32 IEEE802154_REQUIRED_SIZE(struct ieee802154_addr_sa, hwaddr))
33
34#include <net/af_ieee802154.h>
35#include <linux/netdevice.h>
36#include <linux/skbuff.h>
37#include <linux/ieee802154.h>
38
39#include <net/cfg802154.h>
40
41struct ieee802154_sechdr {
42#if defined(__LITTLE_ENDIAN_BITFIELD)
43 u8 level:3,
44 key_id_mode:2,
45 reserved:3;
46#elif defined(__BIG_ENDIAN_BITFIELD)
47 u8 reserved:3,
48 key_id_mode:2,
49 level:3;
50#else
51#error "Please fix <asm/byteorder.h>"
52#endif
53 u8 key_id;
54 __le32 frame_counter;
55 union {
56 __le32 short_src;
57 __le64 extended_src;
58 };
59};
60
61struct ieee802154_hdr_fc {
62#if defined(__LITTLE_ENDIAN_BITFIELD)
63 u16 type:3,
64 security_enabled:1,
65 frame_pending:1,
66 ack_request:1,
67 intra_pan:1,
68 reserved:3,
69 dest_addr_mode:2,
70 version:2,
71 source_addr_mode:2;
72#elif defined(__BIG_ENDIAN_BITFIELD)
73 u16 reserved:1,
74 intra_pan:1,
75 ack_request:1,
76 frame_pending:1,
77 security_enabled:1,
78 type:3,
79 source_addr_mode:2,
80 version:2,
81 dest_addr_mode:2,
82 reserved2:2;
83#else
84#error "Please fix <asm/byteorder.h>"
85#endif
86};
87
88enum ieee802154_frame_version {
89 IEEE802154_2003_STD,
90 IEEE802154_2006_STD,
91 IEEE802154_STD,
92 IEEE802154_RESERVED_STD,
93 IEEE802154_MULTIPURPOSE_STD = IEEE802154_2003_STD,
94};
95
96struct ieee802154_hdr {
97 struct ieee802154_hdr_fc fc;
98 u8 seq;
99 struct ieee802154_addr source;
100 struct ieee802154_addr dest;
101 struct ieee802154_sechdr sec;
102};
103
104/* pushes hdr onto the skb. fields of hdr->fc that can be calculated from
105 * the contents of hdr will be, and the actual value of those bits in
106 * hdr->fc will be ignored. this includes the INTRA_PAN bit and the frame
107 * version, if SECEN is set.
108 */
109int ieee802154_hdr_push(struct sk_buff *skb, struct ieee802154_hdr *hdr);
110
111/* pulls the entire 802.15.4 header off of the skb, including the security
112 * header, and performs pan id decompression
113 */
114int ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr);
115
116/* parses the frame control, sequence number of address fields in a given skb
117 * and stores them into hdr, performing pan id decompression and length checks
118 * to be suitable for use in header_ops.parse
119 */
120int ieee802154_hdr_peek_addrs(const struct sk_buff *skb,
121 struct ieee802154_hdr *hdr);
122
123/* parses the full 802.15.4 header a given skb and stores them into hdr,
124 * performing pan id decompression and length checks to be suitable for use in
125 * header_ops.parse
126 */
127int ieee802154_hdr_peek(const struct sk_buff *skb, struct ieee802154_hdr *hdr);
128
129int ieee802154_max_payload(const struct ieee802154_hdr *hdr);
130
131static inline int
132ieee802154_sechdr_authtag_len(const struct ieee802154_sechdr *sec)
133{
134 switch (sec->level) {
135 case IEEE802154_SCF_SECLEVEL_MIC32:
136 case IEEE802154_SCF_SECLEVEL_ENC_MIC32:
137 return 4;
138 case IEEE802154_SCF_SECLEVEL_MIC64:
139 case IEEE802154_SCF_SECLEVEL_ENC_MIC64:
140 return 8;
141 case IEEE802154_SCF_SECLEVEL_MIC128:
142 case IEEE802154_SCF_SECLEVEL_ENC_MIC128:
143 return 16;
144 case IEEE802154_SCF_SECLEVEL_NONE:
145 case IEEE802154_SCF_SECLEVEL_ENC:
146 default:
147 return 0;
148 }
149}
150
151static inline int ieee802154_hdr_length(struct sk_buff *skb)
152{
153 struct ieee802154_hdr hdr;
154 int len = ieee802154_hdr_pull(skb, &hdr);
155
156 if (len > 0)
157 skb_push(skb, len);
158
159 return len;
160}
161
162static inline bool ieee802154_addr_equal(const struct ieee802154_addr *a1,
163 const struct ieee802154_addr *a2)
164{
165 if (a1->pan_id != a2->pan_id || a1->mode != a2->mode)
166 return false;
167
168 if ((a1->mode == IEEE802154_ADDR_LONG &&
169 a1->extended_addr != a2->extended_addr) ||
170 (a1->mode == IEEE802154_ADDR_SHORT &&
171 a1->short_addr != a2->short_addr))
172 return false;
173
174 return true;
175}
176
177static inline __le64 ieee802154_devaddr_from_raw(const void *raw)
178{
179 u64 temp;
180
181 memcpy(&temp, raw, IEEE802154_ADDR_LEN);
182 return (__force __le64)swab64(temp);
183}
184
185static inline void ieee802154_devaddr_to_raw(void *raw, __le64 addr)
186{
187 u64 temp = swab64((__force u64)addr);
188
189 memcpy(raw, &temp, IEEE802154_ADDR_LEN);
190}
191
192static inline int
193ieee802154_sockaddr_check_size(struct sockaddr_ieee802154 *daddr, int len)
194{
195 struct ieee802154_addr_sa *sa;
196 int ret = 0;
197
198 sa = &daddr->addr;
199 if (len < IEEE802154_MIN_NAMELEN)
200 return -EINVAL;
201 switch (sa->addr_type) {
202 case IEEE802154_ADDR_NONE:
203 break;
204 case IEEE802154_ADDR_SHORT:
205 if (len < IEEE802154_NAMELEN_SHORT)
206 ret = -EINVAL;
207 break;
208 case IEEE802154_ADDR_LONG:
209 if (len < IEEE802154_NAMELEN_LONG)
210 ret = -EINVAL;
211 break;
212 default:
213 ret = -EINVAL;
214 break;
215 }
216 return ret;
217}
218
219static inline void ieee802154_addr_from_sa(struct ieee802154_addr *a,
220 const struct ieee802154_addr_sa *sa)
221{
222 a->mode = sa->addr_type;
223 a->pan_id = cpu_to_le16(sa->pan_id);
224
225 switch (a->mode) {
226 case IEEE802154_ADDR_SHORT:
227 a->short_addr = cpu_to_le16(sa->short_addr);
228 break;
229 case IEEE802154_ADDR_LONG:
230 a->extended_addr = ieee802154_devaddr_from_raw(sa->hwaddr);
231 break;
232 }
233}
234
235static inline void ieee802154_addr_to_sa(struct ieee802154_addr_sa *sa,
236 const struct ieee802154_addr *a)
237{
238 sa->addr_type = a->mode;
239 sa->pan_id = le16_to_cpu(a->pan_id);
240
241 switch (a->mode) {
242 case IEEE802154_ADDR_SHORT:
243 sa->short_addr = le16_to_cpu(a->short_addr);
244 break;
245 case IEEE802154_ADDR_LONG:
246 ieee802154_devaddr_to_raw(sa->hwaddr, a->extended_addr);
247 break;
248 }
249}
250
251/*
252 * A control block of skb passed between the ARPHRD_IEEE802154 device
253 * and other stack parts.
254 */
255struct ieee802154_mac_cb {
256 u8 lqi;
257 u8 type;
258 bool ackreq;
259 bool secen;
260 bool secen_override;
261 u8 seclevel;
262 bool seclevel_override;
263 struct ieee802154_addr source;
264 struct ieee802154_addr dest;
265};
266
267static inline struct ieee802154_mac_cb *mac_cb(struct sk_buff *skb)
268{
269 return (struct ieee802154_mac_cb *)skb->cb;
270}
271
272static inline struct ieee802154_mac_cb *mac_cb_init(struct sk_buff *skb)
273{
274 BUILD_BUG_ON(sizeof(struct ieee802154_mac_cb) > sizeof(skb->cb));
275
276 memset(skb->cb, 0, sizeof(struct ieee802154_mac_cb));
277 return mac_cb(skb);
278}
279
280enum {
281 IEEE802154_LLSEC_DEVKEY_IGNORE,
282 IEEE802154_LLSEC_DEVKEY_RESTRICT,
283 IEEE802154_LLSEC_DEVKEY_RECORD,
284
285 __IEEE802154_LLSEC_DEVKEY_MAX,
286};
287
288#define IEEE802154_MAC_SCAN_ED 0
289#define IEEE802154_MAC_SCAN_ACTIVE 1
290#define IEEE802154_MAC_SCAN_PASSIVE 2
291#define IEEE802154_MAC_SCAN_ORPHAN 3
292
293struct ieee802154_mac_params {
294 s8 transmit_power;
295 u8 min_be;
296 u8 max_be;
297 u8 csma_retries;
298 s8 frame_retries;
299
300 bool lbt;
301 struct wpan_phy_cca cca;
302 s32 cca_ed_level;
303};
304
305struct wpan_phy;
306
307enum {
308 IEEE802154_LLSEC_PARAM_ENABLED = BIT(0),
309 IEEE802154_LLSEC_PARAM_FRAME_COUNTER = BIT(1),
310 IEEE802154_LLSEC_PARAM_OUT_LEVEL = BIT(2),
311 IEEE802154_LLSEC_PARAM_OUT_KEY = BIT(3),
312 IEEE802154_LLSEC_PARAM_KEY_SOURCE = BIT(4),
313 IEEE802154_LLSEC_PARAM_PAN_ID = BIT(5),
314 IEEE802154_LLSEC_PARAM_HWADDR = BIT(6),
315 IEEE802154_LLSEC_PARAM_COORD_HWADDR = BIT(7),
316 IEEE802154_LLSEC_PARAM_COORD_SHORTADDR = BIT(8),
317};
318
319struct ieee802154_llsec_ops {
320 int (*get_params)(struct net_device *dev,
321 struct ieee802154_llsec_params *params);
322 int (*set_params)(struct net_device *dev,
323 const struct ieee802154_llsec_params *params,
324 int changed);
325
326 int (*add_key)(struct net_device *dev,
327 const struct ieee802154_llsec_key_id *id,
328 const struct ieee802154_llsec_key *key);
329 int (*del_key)(struct net_device *dev,
330 const struct ieee802154_llsec_key_id *id);
331
332 int (*add_dev)(struct net_device *dev,
333 const struct ieee802154_llsec_device *llsec_dev);
334 int (*del_dev)(struct net_device *dev, __le64 dev_addr);
335
336 int (*add_devkey)(struct net_device *dev,
337 __le64 device_addr,
338 const struct ieee802154_llsec_device_key *key);
339 int (*del_devkey)(struct net_device *dev,
340 __le64 device_addr,
341 const struct ieee802154_llsec_device_key *key);
342
343 int (*add_seclevel)(struct net_device *dev,
344 const struct ieee802154_llsec_seclevel *sl);
345 int (*del_seclevel)(struct net_device *dev,
346 const struct ieee802154_llsec_seclevel *sl);
347
348 void (*lock_table)(struct net_device *dev);
349 void (*get_table)(struct net_device *dev,
350 struct ieee802154_llsec_table **t);
351 void (*unlock_table)(struct net_device *dev);
352};
353/*
354 * This should be located at net_device->ml_priv
355 *
356 * get_phy should increment the reference counting on returned phy.
357 * Use wpan_wpy_put to put that reference.
358 */
359struct ieee802154_mlme_ops {
360 /* The following fields are optional (can be NULL). */
361
362 int (*assoc_req)(struct net_device *dev,
363 struct ieee802154_addr *addr,
364 u8 channel, u8 page, u8 cap);
365 int (*assoc_resp)(struct net_device *dev,
366 struct ieee802154_addr *addr,
367 __le16 short_addr, u8 status);
368 int (*disassoc_req)(struct net_device *dev,
369 struct ieee802154_addr *addr,
370 u8 reason);
371 int (*start_req)(struct net_device *dev,
372 struct ieee802154_addr *addr,
373 u8 channel, u8 page, u8 bcn_ord, u8 sf_ord,
374 u8 pan_coord, u8 blx, u8 coord_realign);
375 int (*scan_req)(struct net_device *dev,
376 u8 type, u32 channels, u8 page, u8 duration);
377
378 int (*set_mac_params)(struct net_device *dev,
379 const struct ieee802154_mac_params *params);
380 void (*get_mac_params)(struct net_device *dev,
381 struct ieee802154_mac_params *params);
382
383 const struct ieee802154_llsec_ops *llsec;
384};
385
386static inline struct ieee802154_mlme_ops *
387ieee802154_mlme_ops(const struct net_device *dev)
388{
389 return dev->ml_priv;
390}
391
392#endif