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1 | /* | |
2 | * Copyright (C) 2007, 2008, 2009 Siemens AG | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * Written by: | |
14 | * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> | |
15 | */ | |
16 | ||
17 | #ifndef __NET_CFG802154_H | |
18 | #define __NET_CFG802154_H | |
19 | ||
20 | #include <linux/ieee802154.h> | |
21 | #include <linux/netdevice.h> | |
22 | #include <linux/mutex.h> | |
23 | #include <linux/bug.h> | |
24 | ||
25 | #include <net/nl802154.h> | |
26 | ||
27 | struct wpan_phy; | |
28 | struct wpan_phy_cca; | |
29 | ||
30 | #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL | |
31 | struct ieee802154_llsec_device_key; | |
32 | struct ieee802154_llsec_seclevel; | |
33 | struct ieee802154_llsec_params; | |
34 | struct ieee802154_llsec_device; | |
35 | struct ieee802154_llsec_table; | |
36 | struct ieee802154_llsec_key_id; | |
37 | struct ieee802154_llsec_key; | |
38 | #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */ | |
39 | ||
40 | struct cfg802154_ops { | |
41 | struct net_device * (*add_virtual_intf_deprecated)(struct wpan_phy *wpan_phy, | |
42 | const char *name, | |
43 | unsigned char name_assign_type, | |
44 | int type); | |
45 | void (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy, | |
46 | struct net_device *dev); | |
47 | int (*suspend)(struct wpan_phy *wpan_phy); | |
48 | int (*resume)(struct wpan_phy *wpan_phy); | |
49 | int (*add_virtual_intf)(struct wpan_phy *wpan_phy, | |
50 | const char *name, | |
51 | unsigned char name_assign_type, | |
52 | enum nl802154_iftype type, | |
53 | __le64 extended_addr); | |
54 | int (*del_virtual_intf)(struct wpan_phy *wpan_phy, | |
55 | struct wpan_dev *wpan_dev); | |
56 | int (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel); | |
57 | int (*set_cca_mode)(struct wpan_phy *wpan_phy, | |
58 | const struct wpan_phy_cca *cca); | |
59 | int (*set_cca_ed_level)(struct wpan_phy *wpan_phy, s32 ed_level); | |
60 | int (*set_tx_power)(struct wpan_phy *wpan_phy, s32 power); | |
61 | int (*set_pan_id)(struct wpan_phy *wpan_phy, | |
62 | struct wpan_dev *wpan_dev, __le16 pan_id); | |
63 | int (*set_short_addr)(struct wpan_phy *wpan_phy, | |
64 | struct wpan_dev *wpan_dev, __le16 short_addr); | |
65 | int (*set_backoff_exponent)(struct wpan_phy *wpan_phy, | |
66 | struct wpan_dev *wpan_dev, u8 min_be, | |
67 | u8 max_be); | |
68 | int (*set_max_csma_backoffs)(struct wpan_phy *wpan_phy, | |
69 | struct wpan_dev *wpan_dev, | |
70 | u8 max_csma_backoffs); | |
71 | int (*set_max_frame_retries)(struct wpan_phy *wpan_phy, | |
72 | struct wpan_dev *wpan_dev, | |
73 | s8 max_frame_retries); | |
74 | int (*set_lbt_mode)(struct wpan_phy *wpan_phy, | |
75 | struct wpan_dev *wpan_dev, bool mode); | |
76 | int (*set_ackreq_default)(struct wpan_phy *wpan_phy, | |
77 | struct wpan_dev *wpan_dev, bool ackreq); | |
78 | #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL | |
79 | void (*get_llsec_table)(struct wpan_phy *wpan_phy, | |
80 | struct wpan_dev *wpan_dev, | |
81 | struct ieee802154_llsec_table **table); | |
82 | void (*lock_llsec_table)(struct wpan_phy *wpan_phy, | |
83 | struct wpan_dev *wpan_dev); | |
84 | void (*unlock_llsec_table)(struct wpan_phy *wpan_phy, | |
85 | struct wpan_dev *wpan_dev); | |
86 | /* TODO remove locking/get table callbacks, this is part of the | |
87 | * nl802154 interface and should be accessible from ieee802154 layer. | |
88 | */ | |
89 | int (*get_llsec_params)(struct wpan_phy *wpan_phy, | |
90 | struct wpan_dev *wpan_dev, | |
91 | struct ieee802154_llsec_params *params); | |
92 | int (*set_llsec_params)(struct wpan_phy *wpan_phy, | |
93 | struct wpan_dev *wpan_dev, | |
94 | const struct ieee802154_llsec_params *params, | |
95 | int changed); | |
96 | int (*add_llsec_key)(struct wpan_phy *wpan_phy, | |
97 | struct wpan_dev *wpan_dev, | |
98 | const struct ieee802154_llsec_key_id *id, | |
99 | const struct ieee802154_llsec_key *key); | |
100 | int (*del_llsec_key)(struct wpan_phy *wpan_phy, | |
101 | struct wpan_dev *wpan_dev, | |
102 | const struct ieee802154_llsec_key_id *id); | |
103 | int (*add_seclevel)(struct wpan_phy *wpan_phy, | |
104 | struct wpan_dev *wpan_dev, | |
105 | const struct ieee802154_llsec_seclevel *sl); | |
106 | int (*del_seclevel)(struct wpan_phy *wpan_phy, | |
107 | struct wpan_dev *wpan_dev, | |
108 | const struct ieee802154_llsec_seclevel *sl); | |
109 | int (*add_device)(struct wpan_phy *wpan_phy, | |
110 | struct wpan_dev *wpan_dev, | |
111 | const struct ieee802154_llsec_device *dev); | |
112 | int (*del_device)(struct wpan_phy *wpan_phy, | |
113 | struct wpan_dev *wpan_dev, __le64 extended_addr); | |
114 | int (*add_devkey)(struct wpan_phy *wpan_phy, | |
115 | struct wpan_dev *wpan_dev, | |
116 | __le64 extended_addr, | |
117 | const struct ieee802154_llsec_device_key *key); | |
118 | int (*del_devkey)(struct wpan_phy *wpan_phy, | |
119 | struct wpan_dev *wpan_dev, | |
120 | __le64 extended_addr, | |
121 | const struct ieee802154_llsec_device_key *key); | |
122 | #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */ | |
123 | }; | |
124 | ||
125 | static inline bool | |
126 | wpan_phy_supported_bool(bool b, enum nl802154_supported_bool_states st) | |
127 | { | |
128 | switch (st) { | |
129 | case NL802154_SUPPORTED_BOOL_TRUE: | |
130 | return b; | |
131 | case NL802154_SUPPORTED_BOOL_FALSE: | |
132 | return !b; | |
133 | case NL802154_SUPPORTED_BOOL_BOTH: | |
134 | return true; | |
135 | default: | |
136 | WARN_ON(1); | |
137 | } | |
138 | ||
139 | return false; | |
140 | } | |
141 | ||
142 | struct wpan_phy_supported { | |
143 | u32 channels[IEEE802154_MAX_PAGE + 1], | |
144 | cca_modes, cca_opts, iftypes; | |
145 | enum nl802154_supported_bool_states lbt; | |
146 | u8 min_minbe, max_minbe, min_maxbe, max_maxbe, | |
147 | min_csma_backoffs, max_csma_backoffs; | |
148 | s8 min_frame_retries, max_frame_retries; | |
149 | size_t tx_powers_size, cca_ed_levels_size; | |
150 | const s32 *tx_powers, *cca_ed_levels; | |
151 | }; | |
152 | ||
153 | struct wpan_phy_cca { | |
154 | enum nl802154_cca_modes mode; | |
155 | enum nl802154_cca_opts opt; | |
156 | }; | |
157 | ||
158 | static inline bool | |
159 | wpan_phy_cca_cmp(const struct wpan_phy_cca *a, const struct wpan_phy_cca *b) | |
160 | { | |
161 | if (a->mode != b->mode) | |
162 | return false; | |
163 | ||
164 | if (a->mode == NL802154_CCA_ENERGY_CARRIER) | |
165 | return a->opt == b->opt; | |
166 | ||
167 | return true; | |
168 | } | |
169 | ||
170 | /** | |
171 | * @WPAN_PHY_FLAG_TRANSMIT_POWER: Indicates that transceiver will support | |
172 | * transmit power setting. | |
173 | * @WPAN_PHY_FLAG_CCA_ED_LEVEL: Indicates that transceiver will support cca ed | |
174 | * level setting. | |
175 | * @WPAN_PHY_FLAG_CCA_MODE: Indicates that transceiver will support cca mode | |
176 | * setting. | |
177 | */ | |
178 | enum wpan_phy_flags { | |
179 | WPAN_PHY_FLAG_TXPOWER = BIT(1), | |
180 | WPAN_PHY_FLAG_CCA_ED_LEVEL = BIT(2), | |
181 | WPAN_PHY_FLAG_CCA_MODE = BIT(3), | |
182 | }; | |
183 | ||
184 | struct wpan_phy { | |
185 | /* If multiple wpan_phys are registered and you're handed e.g. | |
186 | * a regular netdev with assigned ieee802154_ptr, you won't | |
187 | * know whether it points to a wpan_phy your driver has registered | |
188 | * or not. Assign this to something global to your driver to | |
189 | * help determine whether you own this wpan_phy or not. | |
190 | */ | |
191 | const void *privid; | |
192 | ||
193 | u32 flags; | |
194 | ||
195 | /* | |
196 | * This is a PIB according to 802.15.4-2011. | |
197 | * We do not provide timing-related variables, as they | |
198 | * aren't used outside of driver | |
199 | */ | |
200 | u8 current_channel; | |
201 | u8 current_page; | |
202 | struct wpan_phy_supported supported; | |
203 | /* current transmit_power in mBm */ | |
204 | s32 transmit_power; | |
205 | struct wpan_phy_cca cca; | |
206 | ||
207 | __le64 perm_extended_addr; | |
208 | ||
209 | /* current cca ed threshold in mBm */ | |
210 | s32 cca_ed_level; | |
211 | ||
212 | /* PHY depended MAC PIB values */ | |
213 | ||
214 | /* 802.15.4 acronym: Tdsym in usec */ | |
215 | u8 symbol_duration; | |
216 | /* lifs and sifs periods timing */ | |
217 | u16 lifs_period; | |
218 | u16 sifs_period; | |
219 | ||
220 | struct device dev; | |
221 | ||
222 | /* the network namespace this phy lives in currently */ | |
223 | possible_net_t _net; | |
224 | ||
225 | char priv[0] __aligned(NETDEV_ALIGN); | |
226 | }; | |
227 | ||
228 | static inline struct net *wpan_phy_net(struct wpan_phy *wpan_phy) | |
229 | { | |
230 | return read_pnet(&wpan_phy->_net); | |
231 | } | |
232 | ||
233 | static inline void wpan_phy_net_set(struct wpan_phy *wpan_phy, struct net *net) | |
234 | { | |
235 | write_pnet(&wpan_phy->_net, net); | |
236 | } | |
237 | ||
238 | struct ieee802154_addr { | |
239 | u8 mode; | |
240 | __le16 pan_id; | |
241 | union { | |
242 | __le16 short_addr; | |
243 | __le64 extended_addr; | |
244 | }; | |
245 | }; | |
246 | ||
247 | struct ieee802154_llsec_key_id { | |
248 | u8 mode; | |
249 | u8 id; | |
250 | union { | |
251 | struct ieee802154_addr device_addr; | |
252 | __le32 short_source; | |
253 | __le64 extended_source; | |
254 | }; | |
255 | }; | |
256 | ||
257 | #define IEEE802154_LLSEC_KEY_SIZE 16 | |
258 | ||
259 | struct ieee802154_llsec_key { | |
260 | u8 frame_types; | |
261 | u32 cmd_frame_ids; | |
262 | /* TODO replace with NL802154_KEY_SIZE */ | |
263 | u8 key[IEEE802154_LLSEC_KEY_SIZE]; | |
264 | }; | |
265 | ||
266 | struct ieee802154_llsec_key_entry { | |
267 | struct list_head list; | |
268 | ||
269 | struct ieee802154_llsec_key_id id; | |
270 | struct ieee802154_llsec_key *key; | |
271 | }; | |
272 | ||
273 | struct ieee802154_llsec_params { | |
274 | bool enabled; | |
275 | ||
276 | __be32 frame_counter; | |
277 | u8 out_level; | |
278 | struct ieee802154_llsec_key_id out_key; | |
279 | ||
280 | __le64 default_key_source; | |
281 | ||
282 | __le16 pan_id; | |
283 | __le64 hwaddr; | |
284 | __le64 coord_hwaddr; | |
285 | __le16 coord_shortaddr; | |
286 | }; | |
287 | ||
288 | struct ieee802154_llsec_table { | |
289 | struct list_head keys; | |
290 | struct list_head devices; | |
291 | struct list_head security_levels; | |
292 | }; | |
293 | ||
294 | struct ieee802154_llsec_seclevel { | |
295 | struct list_head list; | |
296 | ||
297 | u8 frame_type; | |
298 | u8 cmd_frame_id; | |
299 | bool device_override; | |
300 | u32 sec_levels; | |
301 | }; | |
302 | ||
303 | struct ieee802154_llsec_device { | |
304 | struct list_head list; | |
305 | ||
306 | __le16 pan_id; | |
307 | __le16 short_addr; | |
308 | __le64 hwaddr; | |
309 | u32 frame_counter; | |
310 | bool seclevel_exempt; | |
311 | ||
312 | u8 key_mode; | |
313 | struct list_head keys; | |
314 | }; | |
315 | ||
316 | struct ieee802154_llsec_device_key { | |
317 | struct list_head list; | |
318 | ||
319 | struct ieee802154_llsec_key_id key_id; | |
320 | u32 frame_counter; | |
321 | }; | |
322 | ||
323 | struct wpan_dev_header_ops { | |
324 | /* TODO create callback currently assumes ieee802154_mac_cb inside | |
325 | * skb->cb. This should be changed to give these information as | |
326 | * parameter. | |
327 | */ | |
328 | int (*create)(struct sk_buff *skb, struct net_device *dev, | |
329 | const struct ieee802154_addr *daddr, | |
330 | const struct ieee802154_addr *saddr, | |
331 | unsigned int len); | |
332 | }; | |
333 | ||
334 | struct wpan_dev { | |
335 | struct wpan_phy *wpan_phy; | |
336 | int iftype; | |
337 | ||
338 | /* the remainder of this struct should be private to cfg802154 */ | |
339 | struct list_head list; | |
340 | struct net_device *netdev; | |
341 | ||
342 | const struct wpan_dev_header_ops *header_ops; | |
343 | ||
344 | /* lowpan interface, set when the wpan_dev belongs to one lowpan_dev */ | |
345 | struct net_device *lowpan_dev; | |
346 | ||
347 | u32 identifier; | |
348 | ||
349 | /* MAC PIB */ | |
350 | __le16 pan_id; | |
351 | __le16 short_addr; | |
352 | __le64 extended_addr; | |
353 | ||
354 | /* MAC BSN field */ | |
355 | atomic_t bsn; | |
356 | /* MAC DSN field */ | |
357 | atomic_t dsn; | |
358 | ||
359 | u8 min_be; | |
360 | u8 max_be; | |
361 | u8 csma_retries; | |
362 | s8 frame_retries; | |
363 | ||
364 | bool lbt; | |
365 | ||
366 | bool promiscuous_mode; | |
367 | ||
368 | /* fallback for acknowledgment bit setting */ | |
369 | bool ackreq; | |
370 | }; | |
371 | ||
372 | #define to_phy(_dev) container_of(_dev, struct wpan_phy, dev) | |
373 | ||
374 | static inline int | |
375 | wpan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, | |
376 | const struct ieee802154_addr *daddr, | |
377 | const struct ieee802154_addr *saddr, | |
378 | unsigned int len) | |
379 | { | |
380 | struct wpan_dev *wpan_dev = dev->ieee802154_ptr; | |
381 | ||
382 | return wpan_dev->header_ops->create(skb, dev, daddr, saddr, len); | |
383 | } | |
384 | ||
385 | struct wpan_phy * | |
386 | wpan_phy_new(const struct cfg802154_ops *ops, size_t priv_size); | |
387 | static inline void wpan_phy_set_dev(struct wpan_phy *phy, struct device *dev) | |
388 | { | |
389 | phy->dev.parent = dev; | |
390 | } | |
391 | ||
392 | int wpan_phy_register(struct wpan_phy *phy); | |
393 | void wpan_phy_unregister(struct wpan_phy *phy); | |
394 | void wpan_phy_free(struct wpan_phy *phy); | |
395 | /* Same semantics as for class_for_each_device */ | |
396 | int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data), void *data); | |
397 | ||
398 | static inline void *wpan_phy_priv(struct wpan_phy *phy) | |
399 | { | |
400 | BUG_ON(!phy); | |
401 | return &phy->priv; | |
402 | } | |
403 | ||
404 | struct wpan_phy *wpan_phy_find(const char *str); | |
405 | ||
406 | static inline void wpan_phy_put(struct wpan_phy *phy) | |
407 | { | |
408 | put_device(&phy->dev); | |
409 | } | |
410 | ||
411 | static inline const char *wpan_phy_name(struct wpan_phy *phy) | |
412 | { | |
413 | return dev_name(&phy->dev); | |
414 | } | |
415 | ||
416 | #endif /* __NET_CFG802154_H */ |