net/mlx4_core: Port aggregation upper layer interface
[deliverable/linux.git] / include / net / ieee802154_netdev.h
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1/*
2 * An interface between IEEE802.15.4 device and rest of the kernel.
3 *
74a02fcf 4 * Copyright (C) 2007-2012 Siemens AG
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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 *
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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>
74a02fcf 20 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
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21 */
22
23#ifndef IEEE802154_NETDEVICE_H
24#define IEEE802154_NETDEVICE_H
25
1cd829c8 26#include <net/af_ieee802154.h>
94b4f6c2
PB
27#include <linux/netdevice.h>
28#include <linux/skbuff.h>
4ca24aca 29#include <linux/ieee802154.h>
94b4f6c2 30
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31#include <net/cfg802154.h>
32
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PB
33struct ieee802154_sechdr {
34#if defined(__LITTLE_ENDIAN_BITFIELD)
35 u8 level:3,
36 key_id_mode:2,
37 reserved:3;
38#elif defined(__BIG_ENDIAN_BITFIELD)
39 u8 reserved:3,
40 key_id_mode:2,
41 level:3;
42#else
43#error "Please fix <asm/byteorder.h>"
44#endif
45 u8 key_id;
46 __le32 frame_counter;
47 union {
48 __le32 short_src;
49 __le64 extended_src;
50 };
51};
1cd829c8 52
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PB
53struct ieee802154_addr {
54 u8 mode;
55 __le16 pan_id;
56 union {
57 __le16 short_addr;
58 __le64 extended_addr;
59 };
60};
61
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PB
62struct ieee802154_hdr_fc {
63#if defined(__LITTLE_ENDIAN_BITFIELD)
64 u16 type:3,
65 security_enabled:1,
66 frame_pending:1,
67 ack_request:1,
68 intra_pan:1,
69 reserved:3,
70 dest_addr_mode:2,
71 version:2,
72 source_addr_mode:2;
73#elif defined(__BIG_ENDIAN_BITFIELD)
74 u16 reserved:1,
75 intra_pan:1,
76 ack_request:1,
77 frame_pending:1,
78 security_enabled:1,
79 type:3,
80 source_addr_mode:2,
81 version:2,
82 dest_addr_mode:2,
83 reserved2:2;
84#else
85#error "Please fix <asm/byteorder.h>"
86#endif
87};
88
89struct ieee802154_hdr {
90 struct ieee802154_hdr_fc fc;
91 u8 seq;
92 struct ieee802154_addr source;
93 struct ieee802154_addr dest;
94 struct ieee802154_sechdr sec;
95};
96
97/* pushes hdr onto the skb. fields of hdr->fc that can be calculated from
98 * the contents of hdr will be, and the actual value of those bits in
99 * hdr->fc will be ignored. this includes the INTRA_PAN bit and the frame
100 * version, if SECEN is set.
101 */
102int ieee802154_hdr_push(struct sk_buff *skb, const struct ieee802154_hdr *hdr);
103
104/* pulls the entire 802.15.4 header off of the skb, including the security
105 * header, and performs pan id decompression
106 */
107int ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr);
108
109/* parses the frame control, sequence number of address fields in a given skb
110 * and stores them into hdr, performing pan id decompression and length checks
111 * to be suitable for use in header_ops.parse
112 */
113int ieee802154_hdr_peek_addrs(const struct sk_buff *skb,
114 struct ieee802154_hdr *hdr);
115
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116/* parses the full 802.15.4 header a given skb and stores them into hdr,
117 * performing pan id decompression and length checks to be suitable for use in
118 * header_ops.parse
119 */
120int ieee802154_hdr_peek(const struct sk_buff *skb, struct ieee802154_hdr *hdr);
121
122int ieee802154_max_payload(const struct ieee802154_hdr *hdr);
123
124static inline int
125ieee802154_sechdr_authtag_len(const struct ieee802154_sechdr *sec)
126{
127 switch (sec->level) {
128 case IEEE802154_SCF_SECLEVEL_MIC32:
129 case IEEE802154_SCF_SECLEVEL_ENC_MIC32:
130 return 4;
131 case IEEE802154_SCF_SECLEVEL_MIC64:
132 case IEEE802154_SCF_SECLEVEL_ENC_MIC64:
133 return 8;
134 case IEEE802154_SCF_SECLEVEL_MIC128:
135 case IEEE802154_SCF_SECLEVEL_ENC_MIC128:
136 return 16;
137 case IEEE802154_SCF_SECLEVEL_NONE:
138 case IEEE802154_SCF_SECLEVEL_ENC:
139 default:
140 return 0;
141 }
142}
143
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144static inline int ieee802154_hdr_length(struct sk_buff *skb)
145{
146 struct ieee802154_hdr hdr;
147 int len = ieee802154_hdr_pull(skb, &hdr);
148
149 if (len > 0)
150 skb_push(skb, len);
151
152 return len;
153}
154
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155static inline bool ieee802154_addr_equal(const struct ieee802154_addr *a1,
156 const struct ieee802154_addr *a2)
157{
158 if (a1->pan_id != a2->pan_id || a1->mode != a2->mode)
159 return false;
160
161 if ((a1->mode == IEEE802154_ADDR_LONG &&
162 a1->extended_addr != a2->extended_addr) ||
163 (a1->mode == IEEE802154_ADDR_SHORT &&
164 a1->short_addr != a2->short_addr))
165 return false;
166
167 return true;
168}
169
170static inline __le64 ieee802154_devaddr_from_raw(const void *raw)
171{
172 u64 temp;
173
174 memcpy(&temp, raw, IEEE802154_ADDR_LEN);
175 return (__force __le64)swab64(temp);
176}
177
178static inline void ieee802154_devaddr_to_raw(void *raw, __le64 addr)
179{
180 u64 temp = swab64((__force u64)addr);
181
182 memcpy(raw, &temp, IEEE802154_ADDR_LEN);
183}
184
185static inline void ieee802154_addr_from_sa(struct ieee802154_addr *a,
186 const struct ieee802154_addr_sa *sa)
187{
188 a->mode = sa->addr_type;
189 a->pan_id = cpu_to_le16(sa->pan_id);
190
191 switch (a->mode) {
192 case IEEE802154_ADDR_SHORT:
193 a->short_addr = cpu_to_le16(sa->short_addr);
194 break;
195 case IEEE802154_ADDR_LONG:
196 a->extended_addr = ieee802154_devaddr_from_raw(sa->hwaddr);
197 break;
198 }
199}
200
201static inline void ieee802154_addr_to_sa(struct ieee802154_addr_sa *sa,
202 const struct ieee802154_addr *a)
203{
204 sa->addr_type = a->mode;
205 sa->pan_id = le16_to_cpu(a->pan_id);
206
207 switch (a->mode) {
208 case IEEE802154_ADDR_SHORT:
209 sa->short_addr = le16_to_cpu(a->short_addr);
210 break;
211 case IEEE802154_ADDR_LONG:
212 ieee802154_devaddr_to_raw(sa->hwaddr, a->extended_addr);
213 break;
214 }
215}
216
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217/*
218 * A control block of skb passed between the ARPHRD_IEEE802154 device
219 * and other stack parts.
220 */
221struct ieee802154_mac_cb {
222 u8 lqi;
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223 u8 type;
224 bool ackreq;
225 bool secen;
f30be4d5
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226 bool secen_override;
227 u8 seclevel;
228 bool seclevel_override;
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229 struct ieee802154_addr source;
230 struct ieee802154_addr dest;
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231};
232
233static inline struct ieee802154_mac_cb *mac_cb(struct sk_buff *skb)
234{
235 return (struct ieee802154_mac_cb *)skb->cb;
236}
237
32edc40a 238static inline struct ieee802154_mac_cb *mac_cb_init(struct sk_buff *skb)
9ec76716 239{
32edc40a 240 BUILD_BUG_ON(sizeof(struct ieee802154_mac_cb) > sizeof(skb->cb));
9ec76716 241
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242 memset(skb->cb, 0, sizeof(struct ieee802154_mac_cb));
243 return mac_cb(skb);
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244}
245
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246#define IEEE802154_LLSEC_KEY_SIZE 16
247
248struct ieee802154_llsec_key_id {
249 u8 mode;
250 u8 id;
251 union {
252 struct ieee802154_addr device_addr;
253 __le32 short_source;
254 __le64 extended_source;
255 };
256};
257
258struct ieee802154_llsec_key {
259 u8 frame_types;
260 u32 cmd_frame_ids;
261 u8 key[IEEE802154_LLSEC_KEY_SIZE];
262};
263
264struct ieee802154_llsec_key_entry {
265 struct list_head list;
266
267 struct ieee802154_llsec_key_id id;
268 struct ieee802154_llsec_key *key;
269};
270
271struct ieee802154_llsec_device_key {
272 struct list_head list;
273
274 struct ieee802154_llsec_key_id key_id;
275 u32 frame_counter;
276};
277
278enum {
279 IEEE802154_LLSEC_DEVKEY_IGNORE,
280 IEEE802154_LLSEC_DEVKEY_RESTRICT,
f0f77dc6 281 IEEE802154_LLSEC_DEVKEY_RECORD,
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282
283 __IEEE802154_LLSEC_DEVKEY_MAX,
284};
285
286struct ieee802154_llsec_device {
287 struct list_head list;
288
289 __le16 pan_id;
290 __le16 short_addr;
291 __le64 hwaddr;
292 u32 frame_counter;
293 bool seclevel_exempt;
294
295 u8 key_mode;
296 struct list_head keys;
297};
298
299struct ieee802154_llsec_seclevel {
300 struct list_head list;
301
302 u8 frame_type;
303 u8 cmd_frame_id;
304 bool device_override;
305 u32 sec_levels;
306};
307
308struct ieee802154_llsec_params {
309 bool enabled;
310
311 __be32 frame_counter;
312 u8 out_level;
313 struct ieee802154_llsec_key_id out_key;
314
315 __le64 default_key_source;
316
317 __le16 pan_id;
318 __le64 hwaddr;
319 __le64 coord_hwaddr;
320 __le16 coord_shortaddr;
321};
322
323struct ieee802154_llsec_table {
324 struct list_head keys;
325 struct list_head devices;
326 struct list_head security_levels;
327};
328
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329#define IEEE802154_MAC_SCAN_ED 0
330#define IEEE802154_MAC_SCAN_ACTIVE 1
331#define IEEE802154_MAC_SCAN_PASSIVE 2
332#define IEEE802154_MAC_SCAN_ORPHAN 3
333
e462ded6
PB
334struct ieee802154_mac_params {
335 s8 transmit_power;
336 u8 min_be;
337 u8 max_be;
338 u8 csma_retries;
339 s8 frame_retries;
340
341 bool lbt;
7fe9a388 342 struct wpan_phy_cca cca;
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343 s32 cca_ed_level;
344};
345
42723448 346struct wpan_phy;
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347
348enum {
349 IEEE802154_LLSEC_PARAM_ENABLED = 1 << 0,
350 IEEE802154_LLSEC_PARAM_FRAME_COUNTER = 1 << 1,
351 IEEE802154_LLSEC_PARAM_OUT_LEVEL = 1 << 2,
352 IEEE802154_LLSEC_PARAM_OUT_KEY = 1 << 3,
353 IEEE802154_LLSEC_PARAM_KEY_SOURCE = 1 << 4,
354 IEEE802154_LLSEC_PARAM_PAN_ID = 1 << 5,
355 IEEE802154_LLSEC_PARAM_HWADDR = 1 << 6,
356 IEEE802154_LLSEC_PARAM_COORD_HWADDR = 1 << 7,
357 IEEE802154_LLSEC_PARAM_COORD_SHORTADDR = 1 << 8,
358};
359
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360struct ieee802154_llsec_ops {
361 int (*get_params)(struct net_device *dev,
362 struct ieee802154_llsec_params *params);
363 int (*set_params)(struct net_device *dev,
364 const struct ieee802154_llsec_params *params,
365 int changed);
366
367 int (*add_key)(struct net_device *dev,
368 const struct ieee802154_llsec_key_id *id,
369 const struct ieee802154_llsec_key *key);
370 int (*del_key)(struct net_device *dev,
371 const struct ieee802154_llsec_key_id *id);
372
373 int (*add_dev)(struct net_device *dev,
374 const struct ieee802154_llsec_device *llsec_dev);
375 int (*del_dev)(struct net_device *dev, __le64 dev_addr);
376
377 int (*add_devkey)(struct net_device *dev,
378 __le64 device_addr,
379 const struct ieee802154_llsec_device_key *key);
380 int (*del_devkey)(struct net_device *dev,
381 __le64 device_addr,
382 const struct ieee802154_llsec_device_key *key);
383
384 int (*add_seclevel)(struct net_device *dev,
385 const struct ieee802154_llsec_seclevel *sl);
386 int (*del_seclevel)(struct net_device *dev,
387 const struct ieee802154_llsec_seclevel *sl);
388
389 void (*lock_table)(struct net_device *dev);
390 void (*get_table)(struct net_device *dev,
391 struct ieee802154_llsec_table **t);
392 void (*unlock_table)(struct net_device *dev);
393};
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394/*
395 * This should be located at net_device->ml_priv
42723448
DES
396 *
397 * get_phy should increment the reference counting on returned phy.
398 * Use wpan_wpy_put to put that reference.
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399 */
400struct ieee802154_mlme_ops {
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WA
401 /* The following fields are optional (can be NULL). */
402
9ec76716 403 int (*assoc_req)(struct net_device *dev,
ae531b94 404 struct ieee802154_addr *addr,
16eea493 405 u8 channel, u8 page, u8 cap);
9ec76716 406 int (*assoc_resp)(struct net_device *dev,
ae531b94 407 struct ieee802154_addr *addr,
b70ab2e8 408 __le16 short_addr, u8 status);
9ec76716 409 int (*disassoc_req)(struct net_device *dev,
ae531b94 410 struct ieee802154_addr *addr,
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411 u8 reason);
412 int (*start_req)(struct net_device *dev,
ae531b94 413 struct ieee802154_addr *addr,
16eea493 414 u8 channel, u8 page, u8 bcn_ord, u8 sf_ord,
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415 u8 pan_coord, u8 blx, u8 coord_realign);
416 int (*scan_req)(struct net_device *dev,
16eea493 417 u8 type, u32 channels, u8 page, u8 duration);
9ec76716 418
e462ded6
PB
419 int (*set_mac_params)(struct net_device *dev,
420 const struct ieee802154_mac_params *params);
421 void (*get_mac_params)(struct net_device *dev,
422 struct ieee802154_mac_params *params);
423
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424 struct ieee802154_llsec_ops *llsec;
425
56aa091d
WA
426 /* The fields below are required. */
427
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428 /*
429 * FIXME: these should become the part of PIB/MIB interface.
430 * However we still don't have IB interface of any kind
431 */
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432 __le16 (*get_pan_id)(const struct net_device *dev);
433 __le16 (*get_short_addr)(const struct net_device *dev);
a9966b58 434 u8 (*get_dsn)(const struct net_device *dev);
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435};
436
74a02fcf 437static inline struct ieee802154_mlme_ops *
438ieee802154_mlme_ops(const struct net_device *dev)
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439{
440 return dev->ml_priv;
441}
442
74a02fcf 443static inline struct ieee802154_reduced_mlme_ops *
444ieee802154_reduced_mlme_ops(const struct net_device *dev)
445{
446 return dev->ml_priv;
447}
9ec76716 448
74a02fcf 449#endif
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