Commit | Line | Data |
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1802d0be | 1 | // SPDX-License-Identifier: GPL-2.0-only |
f25da51f AA |
2 | /* |
3 | * HWSIM IEEE 802.15.4 interface | |
4 | * | |
5 | * (C) 2018 Mojatau, Alexander Aring <aring@mojatau.com> | |
6 | * Copyright 2007-2012 Siemens AG | |
7 | * | |
f25da51f AA |
8 | * Based on fakelb, original Written by: |
9 | * Sergey Lapin <slapin@ossfans.org> | |
10 | * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> | |
11 | * Alexander Smirnov <alex.bluesman.smirnov@gmail.com> | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/timer.h> | |
16 | #include <linux/platform_device.h> | |
1c9f4a3f | 17 | #include <linux/rtnetlink.h> |
f25da51f AA |
18 | #include <linux/netdevice.h> |
19 | #include <linux/device.h> | |
20 | #include <linux/spinlock.h> | |
ea562d8c | 21 | #include <net/ieee802154_netdev.h> |
f25da51f AA |
22 | #include <net/mac802154.h> |
23 | #include <net/cfg802154.h> | |
24 | #include <net/genetlink.h> | |
25 | #include "mac802154_hwsim.h" | |
26 | ||
27 | MODULE_DESCRIPTION("Software simulator of IEEE 802.15.4 radio(s) for mac802154"); | |
28 | MODULE_LICENSE("GPL"); | |
29 | ||
30 | static LIST_HEAD(hwsim_phys); | |
31 | static DEFINE_MUTEX(hwsim_phys_lock); | |
32 | ||
f25da51f AA |
33 | static struct platform_device *mac802154hwsim_dev; |
34 | ||
35 | /* MAC802154_HWSIM netlink family */ | |
36 | static struct genl_family hwsim_genl_family; | |
37 | ||
38 | static int hwsim_radio_idx; | |
39 | ||
40 | enum hwsim_multicast_groups { | |
41 | HWSIM_MCGRP_CONFIG, | |
42 | }; | |
43 | ||
44 | static const struct genl_multicast_group hwsim_mcgrps[] = { | |
45 | [HWSIM_MCGRP_CONFIG] = { .name = "config", }, | |
46 | }; | |
47 | ||
48 | struct hwsim_pib { | |
49 | u8 page; | |
50 | u8 channel; | |
a87815b7 | 51 | struct ieee802154_hw_addr_filt filt; |
19177eed | 52 | enum ieee802154_filtering_level filt_level; |
f25da51f AA |
53 | |
54 | struct rcu_head rcu; | |
55 | }; | |
56 | ||
57 | struct hwsim_edge_info { | |
58 | u8 lqi; | |
59 | ||
60 | struct rcu_head rcu; | |
61 | }; | |
62 | ||
63 | struct hwsim_edge { | |
64 | struct hwsim_phy *endpoint; | |
c5d99d2b | 65 | struct hwsim_edge_info __rcu *info; |
f25da51f AA |
66 | |
67 | struct list_head list; | |
68 | struct rcu_head rcu; | |
69 | }; | |
70 | ||
71 | struct hwsim_phy { | |
72 | struct ieee802154_hw *hw; | |
73 | u32 idx; | |
74 | ||
75 | struct hwsim_pib __rcu *pib; | |
76 | ||
77 | bool suspended; | |
c5d99d2b | 78 | struct list_head edges; |
f25da51f AA |
79 | |
80 | struct list_head list; | |
f25da51f AA |
81 | }; |
82 | ||
83 | static int hwsim_add_one(struct genl_info *info, struct device *dev, | |
84 | bool init); | |
85 | static void hwsim_del(struct hwsim_phy *phy); | |
86 | ||
87 | static int hwsim_hw_ed(struct ieee802154_hw *hw, u8 *level) | |
88 | { | |
89 | *level = 0xbe; | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
9a60850e | 94 | static int hwsim_update_pib(struct ieee802154_hw *hw, u8 page, u8 channel, |
19177eed MR |
95 | struct ieee802154_hw_addr_filt *filt, |
96 | enum ieee802154_filtering_level filt_level) | |
f25da51f AA |
97 | { |
98 | struct hwsim_phy *phy = hw->priv; | |
99 | struct hwsim_pib *pib, *pib_old; | |
100 | ||
9a60850e | 101 | pib = kzalloc(sizeof(*pib), GFP_ATOMIC); |
f25da51f AA |
102 | if (!pib) |
103 | return -ENOMEM; | |
104 | ||
1c9f4a3f | 105 | pib_old = rtnl_dereference(phy->pib); |
a87815b7 | 106 | |
f25da51f AA |
107 | pib->page = page; |
108 | pib->channel = channel; | |
9a60850e MR |
109 | pib->filt.short_addr = filt->short_addr; |
110 | pib->filt.pan_id = filt->pan_id; | |
111 | pib->filt.ieee_addr = filt->ieee_addr; | |
112 | pib->filt.pan_coord = filt->pan_coord; | |
19177eed | 113 | pib->filt_level = filt_level; |
f25da51f | 114 | |
f25da51f AA |
115 | rcu_assign_pointer(phy->pib, pib); |
116 | kfree_rcu(pib_old, rcu); | |
117 | return 0; | |
118 | } | |
119 | ||
9a60850e | 120 | static int hwsim_hw_channel(struct ieee802154_hw *hw, u8 page, u8 channel) |
a87815b7 MR |
121 | { |
122 | struct hwsim_phy *phy = hw->priv; | |
9a60850e MR |
123 | struct hwsim_pib *pib; |
124 | int ret; | |
a87815b7 | 125 | |
9a60850e MR |
126 | rcu_read_lock(); |
127 | pib = rcu_dereference(phy->pib); | |
19177eed | 128 | ret = hwsim_update_pib(hw, page, channel, &pib->filt, pib->filt_level); |
9a60850e | 129 | rcu_read_unlock(); |
a87815b7 | 130 | |
9a60850e MR |
131 | return ret; |
132 | } | |
a87815b7 | 133 | |
9a60850e MR |
134 | static int hwsim_hw_addr_filt(struct ieee802154_hw *hw, |
135 | struct ieee802154_hw_addr_filt *filt, | |
136 | unsigned long changed) | |
137 | { | |
138 | struct hwsim_phy *phy = hw->priv; | |
139 | struct hwsim_pib *pib; | |
140 | int ret; | |
a87815b7 | 141 | |
9a60850e MR |
142 | rcu_read_lock(); |
143 | pib = rcu_dereference(phy->pib); | |
19177eed | 144 | ret = hwsim_update_pib(hw, pib->page, pib->channel, filt, pib->filt_level); |
9a60850e | 145 | rcu_read_unlock(); |
a87815b7 | 146 | |
9a60850e | 147 | return ret; |
f25da51f AA |
148 | } |
149 | ||
ea562d8c MR |
150 | static void hwsim_hw_receive(struct ieee802154_hw *hw, struct sk_buff *skb, |
151 | u8 lqi) | |
152 | { | |
153 | struct ieee802154_hdr hdr; | |
154 | struct hwsim_phy *phy = hw->priv; | |
155 | struct hwsim_pib *pib; | |
156 | ||
157 | rcu_read_lock(); | |
158 | pib = rcu_dereference(phy->pib); | |
159 | ||
160 | if (!pskb_may_pull(skb, 3)) { | |
161 | dev_dbg(hw->parent, "invalid frame\n"); | |
162 | goto drop; | |
163 | } | |
164 | ||
165 | memcpy(&hdr, skb->data, 3); | |
166 | ||
167 | /* Level 4 filtering: Frame fields validity */ | |
19177eed | 168 | if (pib->filt_level == IEEE802154_FILTERING_4_FRAME_FIELDS) { |
ea562d8c MR |
169 | /* a) Drop reserved frame types */ |
170 | switch (mac_cb(skb)->type) { | |
171 | case IEEE802154_FC_TYPE_BEACON: | |
172 | case IEEE802154_FC_TYPE_DATA: | |
173 | case IEEE802154_FC_TYPE_ACK: | |
174 | case IEEE802154_FC_TYPE_MAC_CMD: | |
175 | break; | |
176 | default: | |
177 | dev_dbg(hw->parent, "unrecognized frame type 0x%x\n", | |
178 | mac_cb(skb)->type); | |
179 | goto drop; | |
180 | } | |
181 | ||
182 | /* b) Drop reserved frame versions */ | |
183 | switch (hdr.fc.version) { | |
184 | case IEEE802154_2003_STD: | |
185 | case IEEE802154_2006_STD: | |
186 | case IEEE802154_STD: | |
187 | break; | |
188 | default: | |
189 | dev_dbg(hw->parent, | |
190 | "unrecognized frame version 0x%x\n", | |
191 | hdr.fc.version); | |
192 | goto drop; | |
193 | } | |
194 | ||
195 | /* c) PAN ID constraints */ | |
196 | if ((mac_cb(skb)->dest.mode == IEEE802154_ADDR_LONG || | |
197 | mac_cb(skb)->dest.mode == IEEE802154_ADDR_SHORT) && | |
198 | mac_cb(skb)->dest.pan_id != pib->filt.pan_id && | |
199 | mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST)) { | |
200 | dev_dbg(hw->parent, | |
201 | "unrecognized PAN ID %04x\n", | |
202 | le16_to_cpu(mac_cb(skb)->dest.pan_id)); | |
203 | goto drop; | |
204 | } | |
205 | ||
206 | /* d1) Short address constraints */ | |
207 | if (mac_cb(skb)->dest.mode == IEEE802154_ADDR_SHORT && | |
208 | mac_cb(skb)->dest.short_addr != pib->filt.short_addr && | |
209 | mac_cb(skb)->dest.short_addr != cpu_to_le16(IEEE802154_ADDR_BROADCAST)) { | |
210 | dev_dbg(hw->parent, | |
211 | "unrecognized short address %04x\n", | |
212 | le16_to_cpu(mac_cb(skb)->dest.short_addr)); | |
213 | goto drop; | |
214 | } | |
215 | ||
216 | /* d2) Extended address constraints */ | |
217 | if (mac_cb(skb)->dest.mode == IEEE802154_ADDR_LONG && | |
218 | mac_cb(skb)->dest.extended_addr != pib->filt.ieee_addr) { | |
219 | dev_dbg(hw->parent, | |
220 | "unrecognized long address 0x%016llx\n", | |
221 | mac_cb(skb)->dest.extended_addr); | |
222 | goto drop; | |
223 | } | |
224 | ||
225 | /* d4) Specific PAN coordinator case (no parent) */ | |
226 | if ((mac_cb(skb)->type == IEEE802154_FC_TYPE_DATA || | |
227 | mac_cb(skb)->type == IEEE802154_FC_TYPE_MAC_CMD) && | |
228 | mac_cb(skb)->dest.mode == IEEE802154_ADDR_NONE) { | |
229 | dev_dbg(hw->parent, | |
230 | "relaying is not supported\n"); | |
231 | goto drop; | |
232 | } | |
233 | ||
234 | /* e) Beacon frames follow specific PAN ID rules */ | |
235 | if (mac_cb(skb)->type == IEEE802154_FC_TYPE_BEACON && | |
236 | pib->filt.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST) && | |
237 | mac_cb(skb)->dest.pan_id != pib->filt.pan_id) { | |
238 | dev_dbg(hw->parent, | |
239 | "invalid beacon PAN ID %04x\n", | |
240 | le16_to_cpu(mac_cb(skb)->dest.pan_id)); | |
241 | goto drop; | |
242 | } | |
243 | } | |
244 | ||
245 | rcu_read_unlock(); | |
246 | ||
247 | ieee802154_rx_irqsafe(hw, skb, lqi); | |
248 | ||
249 | return; | |
250 | ||
251 | drop: | |
252 | rcu_read_unlock(); | |
253 | kfree_skb(skb); | |
254 | } | |
255 | ||
f25da51f AA |
256 | static int hwsim_hw_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) |
257 | { | |
258 | struct hwsim_phy *current_phy = hw->priv; | |
259 | struct hwsim_pib *current_pib, *endpoint_pib; | |
260 | struct hwsim_edge_info *einfo; | |
261 | struct hwsim_edge *e; | |
262 | ||
263 | WARN_ON(current_phy->suspended); | |
264 | ||
265 | rcu_read_lock(); | |
266 | current_pib = rcu_dereference(current_phy->pib); | |
267 | list_for_each_entry_rcu(e, ¤t_phy->edges, list) { | |
268 | /* Can be changed later in rx_irqsafe, but this is only a | |
269 | * performance tweak. Received radio should drop the frame | |
270 | * in mac802154 stack anyway... so we don't need to be | |
271 | * 100% of locking here to check on suspended | |
272 | */ | |
273 | if (e->endpoint->suspended) | |
274 | continue; | |
275 | ||
276 | endpoint_pib = rcu_dereference(e->endpoint->pib); | |
277 | if (current_pib->page == endpoint_pib->page && | |
278 | current_pib->channel == endpoint_pib->channel) { | |
279 | struct sk_buff *newskb = pskb_copy(skb, GFP_ATOMIC); | |
280 | ||
281 | einfo = rcu_dereference(e->info); | |
282 | if (newskb) | |
ea562d8c | 283 | hwsim_hw_receive(e->endpoint->hw, newskb, einfo->lqi); |
f25da51f AA |
284 | } |
285 | } | |
286 | rcu_read_unlock(); | |
287 | ||
288 | ieee802154_xmit_complete(hw, skb, false); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static int hwsim_hw_start(struct ieee802154_hw *hw) | |
293 | { | |
294 | struct hwsim_phy *phy = hw->priv; | |
295 | ||
296 | phy->suspended = false; | |
a4b5b4c5 | 297 | |
f25da51f AA |
298 | return 0; |
299 | } | |
300 | ||
301 | static void hwsim_hw_stop(struct ieee802154_hw *hw) | |
302 | { | |
303 | struct hwsim_phy *phy = hw->priv; | |
304 | ||
305 | phy->suspended = true; | |
f25da51f AA |
306 | } |
307 | ||
308 | static int | |
309 | hwsim_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) | |
310 | { | |
19177eed MR |
311 | enum ieee802154_filtering_level filt_level; |
312 | struct hwsim_phy *phy = hw->priv; | |
313 | struct hwsim_pib *pib; | |
314 | int ret; | |
315 | ||
316 | if (on) | |
317 | filt_level = IEEE802154_FILTERING_NONE; | |
318 | else | |
319 | filt_level = IEEE802154_FILTERING_4_FRAME_FIELDS; | |
320 | ||
321 | rcu_read_lock(); | |
322 | pib = rcu_dereference(phy->pib); | |
323 | ret = hwsim_update_pib(hw, pib->page, pib->channel, &pib->filt, filt_level); | |
324 | rcu_read_unlock(); | |
325 | ||
326 | return ret; | |
f25da51f AA |
327 | } |
328 | ||
329 | static const struct ieee802154_ops hwsim_ops = { | |
330 | .owner = THIS_MODULE, | |
331 | .xmit_async = hwsim_hw_xmit, | |
332 | .ed = hwsim_hw_ed, | |
333 | .set_channel = hwsim_hw_channel, | |
334 | .start = hwsim_hw_start, | |
335 | .stop = hwsim_hw_stop, | |
336 | .set_promiscuous_mode = hwsim_set_promiscuous_mode, | |
a87815b7 | 337 | .set_hw_addr_filt = hwsim_hw_addr_filt, |
f25da51f AA |
338 | }; |
339 | ||
340 | static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info) | |
341 | { | |
342 | return hwsim_add_one(info, &mac802154hwsim_dev->dev, false); | |
343 | } | |
344 | ||
345 | static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info) | |
346 | { | |
347 | struct hwsim_phy *phy, *tmp; | |
348 | s64 idx = -1; | |
349 | ||
350 | if (!info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID]) | |
351 | return -EINVAL; | |
352 | ||
353 | idx = nla_get_u32(info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID]); | |
354 | ||
355 | mutex_lock(&hwsim_phys_lock); | |
356 | list_for_each_entry_safe(phy, tmp, &hwsim_phys, list) { | |
357 | if (idx == phy->idx) { | |
358 | hwsim_del(phy); | |
359 | mutex_unlock(&hwsim_phys_lock); | |
360 | return 0; | |
361 | } | |
362 | } | |
363 | mutex_unlock(&hwsim_phys_lock); | |
364 | ||
365 | return -ENODEV; | |
366 | } | |
367 | ||
368 | static int append_radio_msg(struct sk_buff *skb, struct hwsim_phy *phy) | |
369 | { | |
370 | struct nlattr *nl_edges, *nl_edge; | |
371 | struct hwsim_edge_info *einfo; | |
372 | struct hwsim_edge *e; | |
373 | int ret; | |
374 | ||
375 | ret = nla_put_u32(skb, MAC802154_HWSIM_ATTR_RADIO_ID, phy->idx); | |
376 | if (ret < 0) | |
377 | return ret; | |
378 | ||
379 | rcu_read_lock(); | |
380 | if (list_empty(&phy->edges)) { | |
381 | rcu_read_unlock(); | |
382 | return 0; | |
383 | } | |
384 | ||
ae0be8de MK |
385 | nl_edges = nla_nest_start_noflag(skb, |
386 | MAC802154_HWSIM_ATTR_RADIO_EDGES); | |
f25da51f AA |
387 | if (!nl_edges) { |
388 | rcu_read_unlock(); | |
389 | return -ENOBUFS; | |
390 | } | |
391 | ||
392 | list_for_each_entry_rcu(e, &phy->edges, list) { | |
ae0be8de MK |
393 | nl_edge = nla_nest_start_noflag(skb, |
394 | MAC802154_HWSIM_ATTR_RADIO_EDGE); | |
f25da51f AA |
395 | if (!nl_edge) { |
396 | rcu_read_unlock(); | |
397 | nla_nest_cancel(skb, nl_edges); | |
398 | return -ENOBUFS; | |
399 | } | |
400 | ||
401 | ret = nla_put_u32(skb, MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID, | |
402 | e->endpoint->idx); | |
403 | if (ret < 0) { | |
404 | rcu_read_unlock(); | |
405 | nla_nest_cancel(skb, nl_edge); | |
406 | nla_nest_cancel(skb, nl_edges); | |
407 | return ret; | |
408 | } | |
409 | ||
410 | einfo = rcu_dereference(e->info); | |
411 | ret = nla_put_u8(skb, MAC802154_HWSIM_EDGE_ATTR_LQI, | |
412 | einfo->lqi); | |
413 | if (ret < 0) { | |
414 | rcu_read_unlock(); | |
415 | nla_nest_cancel(skb, nl_edge); | |
416 | nla_nest_cancel(skb, nl_edges); | |
417 | return ret; | |
418 | } | |
419 | ||
420 | nla_nest_end(skb, nl_edge); | |
421 | } | |
422 | rcu_read_unlock(); | |
423 | ||
424 | nla_nest_end(skb, nl_edges); | |
425 | ||
426 | return 0; | |
427 | } | |
428 | ||
429 | static int hwsim_get_radio(struct sk_buff *skb, struct hwsim_phy *phy, | |
430 | u32 portid, u32 seq, | |
431 | struct netlink_callback *cb, int flags) | |
432 | { | |
433 | void *hdr; | |
24ad92c8 | 434 | int res; |
f25da51f AA |
435 | |
436 | hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags, | |
437 | MAC802154_HWSIM_CMD_GET_RADIO); | |
438 | if (!hdr) | |
439 | return -EMSGSIZE; | |
440 | ||
441 | if (cb) | |
442 | genl_dump_check_consistent(cb, hdr); | |
443 | ||
444 | res = append_radio_msg(skb, phy); | |
445 | if (res < 0) | |
446 | goto out_err; | |
447 | ||
448 | genlmsg_end(skb, hdr); | |
449 | return 0; | |
450 | ||
451 | out_err: | |
452 | genlmsg_cancel(skb, hdr); | |
453 | return res; | |
454 | } | |
455 | ||
456 | static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info) | |
457 | { | |
458 | struct hwsim_phy *phy; | |
459 | struct sk_buff *skb; | |
460 | int idx, res = -ENODEV; | |
461 | ||
462 | if (!info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID]) | |
463 | return -EINVAL; | |
464 | idx = nla_get_u32(info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID]); | |
465 | ||
466 | mutex_lock(&hwsim_phys_lock); | |
467 | list_for_each_entry(phy, &hwsim_phys, list) { | |
468 | if (phy->idx != idx) | |
469 | continue; | |
470 | ||
471 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); | |
472 | if (!skb) { | |
473 | res = -ENOMEM; | |
474 | goto out_err; | |
475 | } | |
476 | ||
477 | res = hwsim_get_radio(skb, phy, info->snd_portid, | |
478 | info->snd_seq, NULL, 0); | |
479 | if (res < 0) { | |
480 | nlmsg_free(skb); | |
481 | goto out_err; | |
482 | } | |
483 | ||
19b39a25 | 484 | res = genlmsg_reply(skb, info); |
f25da51f AA |
485 | break; |
486 | } | |
487 | ||
488 | out_err: | |
489 | mutex_unlock(&hwsim_phys_lock); | |
490 | ||
491 | return res; | |
492 | } | |
493 | ||
494 | static int hwsim_dump_radio_nl(struct sk_buff *skb, | |
495 | struct netlink_callback *cb) | |
496 | { | |
497 | int idx = cb->args[0]; | |
498 | struct hwsim_phy *phy; | |
499 | int res; | |
500 | ||
501 | mutex_lock(&hwsim_phys_lock); | |
502 | ||
503 | if (idx == hwsim_radio_idx) | |
504 | goto done; | |
505 | ||
506 | list_for_each_entry(phy, &hwsim_phys, list) { | |
507 | if (phy->idx < idx) | |
508 | continue; | |
509 | ||
510 | res = hwsim_get_radio(skb, phy, NETLINK_CB(cb->skb).portid, | |
511 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
512 | if (res < 0) | |
513 | break; | |
514 | ||
515 | idx = phy->idx + 1; | |
516 | } | |
517 | ||
518 | cb->args[0] = idx; | |
519 | ||
520 | done: | |
521 | mutex_unlock(&hwsim_phys_lock); | |
522 | return skb->len; | |
523 | } | |
524 | ||
525 | /* caller need to held hwsim_phys_lock */ | |
526 | static struct hwsim_phy *hwsim_get_radio_by_id(uint32_t idx) | |
527 | { | |
528 | struct hwsim_phy *phy; | |
529 | ||
530 | list_for_each_entry(phy, &hwsim_phys, list) { | |
531 | if (phy->idx == idx) | |
532 | return phy; | |
533 | } | |
534 | ||
535 | return NULL; | |
536 | } | |
537 | ||
538 | static const struct nla_policy hwsim_edge_policy[MAC802154_HWSIM_EDGE_ATTR_MAX + 1] = { | |
539 | [MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID] = { .type = NLA_U32 }, | |
540 | [MAC802154_HWSIM_EDGE_ATTR_LQI] = { .type = NLA_U8 }, | |
541 | }; | |
542 | ||
543 | static struct hwsim_edge *hwsim_alloc_edge(struct hwsim_phy *endpoint, u8 lqi) | |
544 | { | |
545 | struct hwsim_edge_info *einfo; | |
546 | struct hwsim_edge *e; | |
547 | ||
548 | e = kzalloc(sizeof(*e), GFP_KERNEL); | |
549 | if (!e) | |
550 | return NULL; | |
551 | ||
552 | einfo = kzalloc(sizeof(*einfo), GFP_KERNEL); | |
553 | if (!einfo) { | |
554 | kfree(e); | |
555 | return NULL; | |
556 | } | |
557 | ||
558 | einfo->lqi = 0xff; | |
1c9f4a3f | 559 | rcu_assign_pointer(e->info, einfo); |
f25da51f AA |
560 | e->endpoint = endpoint; |
561 | ||
562 | return e; | |
563 | } | |
564 | ||
565 | static void hwsim_free_edge(struct hwsim_edge *e) | |
566 | { | |
1c9f4a3f AA |
567 | struct hwsim_edge_info *einfo; |
568 | ||
569 | rcu_read_lock(); | |
570 | einfo = rcu_dereference(e->info); | |
571 | rcu_read_unlock(); | |
572 | ||
573 | kfree_rcu(einfo, rcu); | |
f25da51f AA |
574 | kfree_rcu(e, rcu); |
575 | } | |
576 | ||
577 | static int hwsim_new_edge_nl(struct sk_buff *msg, struct genl_info *info) | |
578 | { | |
579 | struct nlattr *edge_attrs[MAC802154_HWSIM_EDGE_ATTR_MAX + 1]; | |
580 | struct hwsim_phy *phy_v0, *phy_v1; | |
581 | struct hwsim_edge *e; | |
582 | u32 v0, v1; | |
583 | ||
889d0e7d | 584 | if (!info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID] || |
f25da51f AA |
585 | !info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE]) |
586 | return -EINVAL; | |
587 | ||
8cb08174 | 588 | if (nla_parse_nested_deprecated(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX, info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE], hwsim_edge_policy, NULL)) |
f25da51f AA |
589 | return -EINVAL; |
590 | ||
591 | if (!edge_attrs[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID]) | |
592 | return -EINVAL; | |
593 | ||
594 | v0 = nla_get_u32(info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID]); | |
595 | v1 = nla_get_u32(edge_attrs[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID]); | |
596 | ||
597 | if (v0 == v1) | |
598 | return -EINVAL; | |
599 | ||
600 | mutex_lock(&hwsim_phys_lock); | |
601 | phy_v0 = hwsim_get_radio_by_id(v0); | |
602 | if (!phy_v0) { | |
603 | mutex_unlock(&hwsim_phys_lock); | |
604 | return -ENOENT; | |
605 | } | |
606 | ||
607 | phy_v1 = hwsim_get_radio_by_id(v1); | |
608 | if (!phy_v1) { | |
609 | mutex_unlock(&hwsim_phys_lock); | |
610 | return -ENOENT; | |
611 | } | |
612 | ||
613 | rcu_read_lock(); | |
614 | list_for_each_entry_rcu(e, &phy_v0->edges, list) { | |
615 | if (e->endpoint->idx == v1) { | |
616 | mutex_unlock(&hwsim_phys_lock); | |
617 | rcu_read_unlock(); | |
618 | return -EEXIST; | |
619 | } | |
620 | } | |
621 | rcu_read_unlock(); | |
622 | ||
623 | e = hwsim_alloc_edge(phy_v1, 0xff); | |
624 | if (!e) { | |
625 | mutex_unlock(&hwsim_phys_lock); | |
626 | return -ENOMEM; | |
627 | } | |
628 | list_add_rcu(&e->list, &phy_v0->edges); | |
629 | /* wait until changes are done under hwsim_phys_lock lock | |
630 | * should prevent of calling this function twice while | |
631 | * edges list has not the changes yet. | |
632 | */ | |
633 | synchronize_rcu(); | |
634 | mutex_unlock(&hwsim_phys_lock); | |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
639 | static int hwsim_del_edge_nl(struct sk_buff *msg, struct genl_info *info) | |
640 | { | |
641 | struct nlattr *edge_attrs[MAC802154_HWSIM_EDGE_ATTR_MAX + 1]; | |
642 | struct hwsim_phy *phy_v0; | |
643 | struct hwsim_edge *e; | |
644 | u32 v0, v1; | |
645 | ||
0303b303 | 646 | if (!info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID] || |
f25da51f AA |
647 | !info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE]) |
648 | return -EINVAL; | |
649 | ||
8cb08174 | 650 | if (nla_parse_nested_deprecated(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX, info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE], hwsim_edge_policy, NULL)) |
f25da51f AA |
651 | return -EINVAL; |
652 | ||
653 | if (!edge_attrs[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID]) | |
654 | return -EINVAL; | |
655 | ||
656 | v0 = nla_get_u32(info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID]); | |
657 | v1 = nla_get_u32(edge_attrs[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID]); | |
658 | ||
659 | mutex_lock(&hwsim_phys_lock); | |
660 | phy_v0 = hwsim_get_radio_by_id(v0); | |
661 | if (!phy_v0) { | |
662 | mutex_unlock(&hwsim_phys_lock); | |
663 | return -ENOENT; | |
664 | } | |
665 | ||
666 | rcu_read_lock(); | |
667 | list_for_each_entry_rcu(e, &phy_v0->edges, list) { | |
668 | if (e->endpoint->idx == v1) { | |
669 | rcu_read_unlock(); | |
670 | list_del_rcu(&e->list); | |
671 | hwsim_free_edge(e); | |
672 | /* same again - wait until list changes are done */ | |
673 | synchronize_rcu(); | |
674 | mutex_unlock(&hwsim_phys_lock); | |
675 | return 0; | |
676 | } | |
677 | } | |
678 | rcu_read_unlock(); | |
679 | ||
680 | mutex_unlock(&hwsim_phys_lock); | |
681 | ||
682 | return -ENOENT; | |
683 | } | |
684 | ||
685 | static int hwsim_set_edge_lqi(struct sk_buff *msg, struct genl_info *info) | |
686 | { | |
687 | struct nlattr *edge_attrs[MAC802154_HWSIM_EDGE_ATTR_MAX + 1]; | |
688 | struct hwsim_edge_info *einfo; | |
689 | struct hwsim_phy *phy_v0; | |
690 | struct hwsim_edge *e; | |
691 | u32 v0, v1; | |
692 | u8 lqi; | |
693 | ||
e9faf53c | 694 | if (!info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID] || |
f25da51f AA |
695 | !info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE]) |
696 | return -EINVAL; | |
697 | ||
8cb08174 | 698 | if (nla_parse_nested_deprecated(edge_attrs, MAC802154_HWSIM_EDGE_ATTR_MAX, info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE], hwsim_edge_policy, NULL)) |
f25da51f AA |
699 | return -EINVAL; |
700 | ||
e9faf53c | 701 | if (!edge_attrs[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID] || |
f25da51f AA |
702 | !edge_attrs[MAC802154_HWSIM_EDGE_ATTR_LQI]) |
703 | return -EINVAL; | |
704 | ||
705 | v0 = nla_get_u32(info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID]); | |
706 | v1 = nla_get_u32(edge_attrs[MAC802154_HWSIM_EDGE_ATTR_ENDPOINT_ID]); | |
707 | lqi = nla_get_u8(edge_attrs[MAC802154_HWSIM_EDGE_ATTR_LQI]); | |
708 | ||
709 | mutex_lock(&hwsim_phys_lock); | |
710 | phy_v0 = hwsim_get_radio_by_id(v0); | |
711 | if (!phy_v0) { | |
712 | mutex_unlock(&hwsim_phys_lock); | |
713 | return -ENOENT; | |
714 | } | |
715 | ||
716 | einfo = kzalloc(sizeof(*einfo), GFP_KERNEL); | |
470770bf | 717 | if (!einfo) { |
f25da51f AA |
718 | mutex_unlock(&hwsim_phys_lock); |
719 | return -ENOMEM; | |
720 | } | |
721 | ||
722 | rcu_read_lock(); | |
723 | list_for_each_entry_rcu(e, &phy_v0->edges, list) { | |
724 | if (e->endpoint->idx == v1) { | |
725 | einfo->lqi = lqi; | |
726 | rcu_assign_pointer(e->info, einfo); | |
727 | rcu_read_unlock(); | |
728 | mutex_unlock(&hwsim_phys_lock); | |
729 | return 0; | |
730 | } | |
731 | } | |
732 | rcu_read_unlock(); | |
733 | ||
734 | kfree(einfo); | |
735 | mutex_unlock(&hwsim_phys_lock); | |
736 | ||
737 | return -ENOENT; | |
738 | } | |
739 | ||
740 | /* MAC802154_HWSIM netlink policy */ | |
741 | ||
742 | static const struct nla_policy hwsim_genl_policy[MAC802154_HWSIM_ATTR_MAX + 1] = { | |
743 | [MAC802154_HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 }, | |
744 | [MAC802154_HWSIM_ATTR_RADIO_EDGE] = { .type = NLA_NESTED }, | |
745 | [MAC802154_HWSIM_ATTR_RADIO_EDGES] = { .type = NLA_NESTED }, | |
746 | }; | |
747 | ||
748 | /* Generic Netlink operations array */ | |
66a9b928 | 749 | static const struct genl_small_ops hwsim_nl_ops[] = { |
f25da51f AA |
750 | { |
751 | .cmd = MAC802154_HWSIM_CMD_NEW_RADIO, | |
ef6243ac | 752 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f25da51f AA |
753 | .doit = hwsim_new_radio_nl, |
754 | .flags = GENL_UNS_ADMIN_PERM, | |
755 | }, | |
756 | { | |
757 | .cmd = MAC802154_HWSIM_CMD_DEL_RADIO, | |
ef6243ac | 758 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f25da51f AA |
759 | .doit = hwsim_del_radio_nl, |
760 | .flags = GENL_UNS_ADMIN_PERM, | |
761 | }, | |
762 | { | |
763 | .cmd = MAC802154_HWSIM_CMD_GET_RADIO, | |
ef6243ac | 764 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f25da51f AA |
765 | .doit = hwsim_get_radio_nl, |
766 | .dumpit = hwsim_dump_radio_nl, | |
767 | }, | |
768 | { | |
769 | .cmd = MAC802154_HWSIM_CMD_NEW_EDGE, | |
ef6243ac | 770 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f25da51f AA |
771 | .doit = hwsim_new_edge_nl, |
772 | .flags = GENL_UNS_ADMIN_PERM, | |
773 | }, | |
774 | { | |
775 | .cmd = MAC802154_HWSIM_CMD_DEL_EDGE, | |
ef6243ac | 776 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f25da51f AA |
777 | .doit = hwsim_del_edge_nl, |
778 | .flags = GENL_UNS_ADMIN_PERM, | |
779 | }, | |
780 | { | |
781 | .cmd = MAC802154_HWSIM_CMD_SET_EDGE, | |
ef6243ac | 782 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f25da51f AA |
783 | .doit = hwsim_set_edge_lqi, |
784 | .flags = GENL_UNS_ADMIN_PERM, | |
785 | }, | |
786 | }; | |
787 | ||
788 | static struct genl_family hwsim_genl_family __ro_after_init = { | |
789 | .name = "MAC802154_HWSIM", | |
790 | .version = 1, | |
791 | .maxattr = MAC802154_HWSIM_ATTR_MAX, | |
3b0f31f2 | 792 | .policy = hwsim_genl_policy, |
f25da51f | 793 | .module = THIS_MODULE, |
66a9b928 JK |
794 | .small_ops = hwsim_nl_ops, |
795 | .n_small_ops = ARRAY_SIZE(hwsim_nl_ops), | |
9c5d03d3 | 796 | .resv_start_op = MAC802154_HWSIM_CMD_NEW_EDGE + 1, |
f25da51f AA |
797 | .mcgrps = hwsim_mcgrps, |
798 | .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps), | |
799 | }; | |
800 | ||
801 | static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb, | |
802 | struct genl_info *info) | |
803 | { | |
804 | if (info) | |
805 | genl_notify(&hwsim_genl_family, mcast_skb, info, | |
806 | HWSIM_MCGRP_CONFIG, GFP_KERNEL); | |
807 | else | |
808 | genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0, | |
809 | HWSIM_MCGRP_CONFIG, GFP_KERNEL); | |
810 | } | |
811 | ||
812 | static void hwsim_mcast_new_radio(struct genl_info *info, struct hwsim_phy *phy) | |
813 | { | |
814 | struct sk_buff *mcast_skb; | |
815 | void *data; | |
816 | ||
817 | mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
818 | if (!mcast_skb) | |
819 | return; | |
820 | ||
821 | data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0, | |
822 | MAC802154_HWSIM_CMD_NEW_RADIO); | |
823 | if (!data) | |
824 | goto out_err; | |
825 | ||
826 | if (append_radio_msg(mcast_skb, phy) < 0) | |
827 | goto out_err; | |
828 | ||
829 | genlmsg_end(mcast_skb, data); | |
830 | ||
831 | hwsim_mcast_config_msg(mcast_skb, info); | |
832 | return; | |
833 | ||
834 | out_err: | |
835 | genlmsg_cancel(mcast_skb, data); | |
836 | nlmsg_free(mcast_skb); | |
837 | } | |
838 | ||
839 | static void hwsim_edge_unsubscribe_me(struct hwsim_phy *phy) | |
840 | { | |
841 | struct hwsim_phy *tmp; | |
842 | struct hwsim_edge *e; | |
843 | ||
844 | rcu_read_lock(); | |
845 | /* going to all phy edges and remove phy from it */ | |
846 | list_for_each_entry(tmp, &hwsim_phys, list) { | |
847 | list_for_each_entry_rcu(e, &tmp->edges, list) { | |
848 | if (e->endpoint->idx == phy->idx) { | |
849 | list_del_rcu(&e->list); | |
850 | hwsim_free_edge(e); | |
851 | } | |
852 | } | |
853 | } | |
854 | rcu_read_unlock(); | |
855 | ||
856 | synchronize_rcu(); | |
857 | } | |
858 | ||
859 | static int hwsim_subscribe_all_others(struct hwsim_phy *phy) | |
860 | { | |
861 | struct hwsim_phy *sub; | |
862 | struct hwsim_edge *e; | |
863 | ||
864 | list_for_each_entry(sub, &hwsim_phys, list) { | |
865 | e = hwsim_alloc_edge(sub, 0xff); | |
866 | if (!e) | |
867 | goto me_fail; | |
868 | ||
869 | list_add_rcu(&e->list, &phy->edges); | |
870 | } | |
871 | ||
872 | list_for_each_entry(sub, &hwsim_phys, list) { | |
873 | e = hwsim_alloc_edge(phy, 0xff); | |
874 | if (!e) | |
875 | goto sub_fail; | |
876 | ||
877 | list_add_rcu(&e->list, &sub->edges); | |
878 | } | |
879 | ||
880 | return 0; | |
881 | ||
ab372c22 DM |
882 | sub_fail: |
883 | hwsim_edge_unsubscribe_me(phy); | |
f25da51f | 884 | me_fail: |
1c89a8e3 AA |
885 | rcu_read_lock(); |
886 | list_for_each_entry_rcu(e, &phy->edges, list) { | |
f25da51f AA |
887 | list_del_rcu(&e->list); |
888 | hwsim_free_edge(e); | |
889 | } | |
1c89a8e3 | 890 | rcu_read_unlock(); |
f25da51f AA |
891 | return -ENOMEM; |
892 | } | |
893 | ||
894 | static int hwsim_add_one(struct genl_info *info, struct device *dev, | |
895 | bool init) | |
896 | { | |
897 | struct ieee802154_hw *hw; | |
898 | struct hwsim_phy *phy; | |
899 | struct hwsim_pib *pib; | |
900 | int idx; | |
901 | int err; | |
902 | ||
903 | idx = hwsim_radio_idx++; | |
904 | ||
905 | hw = ieee802154_alloc_hw(sizeof(*phy), &hwsim_ops); | |
906 | if (!hw) | |
907 | return -ENOMEM; | |
908 | ||
909 | phy = hw->priv; | |
910 | phy->hw = hw; | |
911 | ||
912 | /* 868 MHz BPSK 802.15.4-2003 */ | |
913 | hw->phy->supported.channels[0] |= 1; | |
914 | /* 915 MHz BPSK 802.15.4-2003 */ | |
915 | hw->phy->supported.channels[0] |= 0x7fe; | |
916 | /* 2.4 GHz O-QPSK 802.15.4-2003 */ | |
917 | hw->phy->supported.channels[0] |= 0x7FFF800; | |
918 | /* 868 MHz ASK 802.15.4-2006 */ | |
919 | hw->phy->supported.channels[1] |= 1; | |
920 | /* 915 MHz ASK 802.15.4-2006 */ | |
921 | hw->phy->supported.channels[1] |= 0x7fe; | |
922 | /* 868 MHz O-QPSK 802.15.4-2006 */ | |
923 | hw->phy->supported.channels[2] |= 1; | |
924 | /* 915 MHz O-QPSK 802.15.4-2006 */ | |
925 | hw->phy->supported.channels[2] |= 0x7fe; | |
926 | /* 2.4 GHz CSS 802.15.4a-2007 */ | |
927 | hw->phy->supported.channels[3] |= 0x3fff; | |
928 | /* UWB Sub-gigahertz 802.15.4a-2007 */ | |
929 | hw->phy->supported.channels[4] |= 1; | |
930 | /* UWB Low band 802.15.4a-2007 */ | |
931 | hw->phy->supported.channels[4] |= 0x1e; | |
932 | /* UWB High band 802.15.4a-2007 */ | |
933 | hw->phy->supported.channels[4] |= 0xffe0; | |
934 | /* 750 MHz O-QPSK 802.15.4c-2009 */ | |
935 | hw->phy->supported.channels[5] |= 0xf; | |
936 | /* 750 MHz MPSK 802.15.4c-2009 */ | |
937 | hw->phy->supported.channels[5] |= 0xf0; | |
938 | /* 950 MHz BPSK 802.15.4d-2009 */ | |
939 | hw->phy->supported.channels[6] |= 0x3ff; | |
940 | /* 950 MHz GFSK 802.15.4d-2009 */ | |
941 | hw->phy->supported.channels[6] |= 0x3ffc00; | |
942 | ||
943 | ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); | |
944 | ||
945 | /* hwsim phy channel 13 as default */ | |
946 | hw->phy->current_channel = 13; | |
947 | pib = kzalloc(sizeof(*pib), GFP_KERNEL); | |
948 | if (!pib) { | |
949 | err = -ENOMEM; | |
950 | goto err_pib; | |
951 | } | |
952 | ||
1293fccc | 953 | pib->channel = 13; |
a87815b7 MR |
954 | pib->filt.short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST); |
955 | pib->filt.pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST); | |
1c9f4a3f | 956 | rcu_assign_pointer(phy->pib, pib); |
f25da51f AA |
957 | phy->idx = idx; |
958 | INIT_LIST_HEAD(&phy->edges); | |
959 | ||
a4b5b4c5 | 960 | hw->flags = IEEE802154_HW_PROMISCUOUS; |
f25da51f AA |
961 | hw->parent = dev; |
962 | ||
963 | err = ieee802154_register_hw(hw); | |
964 | if (err) | |
965 | goto err_reg; | |
966 | ||
967 | mutex_lock(&hwsim_phys_lock); | |
968 | if (init) { | |
969 | err = hwsim_subscribe_all_others(phy); | |
13403d69 WY |
970 | if (err < 0) { |
971 | mutex_unlock(&hwsim_phys_lock); | |
de166bbe | 972 | goto err_subscribe; |
13403d69 | 973 | } |
f25da51f AA |
974 | } |
975 | list_add_tail(&phy->list, &hwsim_phys); | |
976 | mutex_unlock(&hwsim_phys_lock); | |
977 | ||
978 | hwsim_mcast_new_radio(info, phy); | |
979 | ||
980 | return idx; | |
981 | ||
de166bbe Y |
982 | err_subscribe: |
983 | ieee802154_unregister_hw(phy->hw); | |
f25da51f AA |
984 | err_reg: |
985 | kfree(pib); | |
986 | err_pib: | |
987 | ieee802154_free_hw(phy->hw); | |
988 | return err; | |
989 | } | |
990 | ||
991 | static void hwsim_del(struct hwsim_phy *phy) | |
992 | { | |
1c9f4a3f | 993 | struct hwsim_pib *pib; |
28a5501c | 994 | struct hwsim_edge *e; |
1c9f4a3f | 995 | |
f25da51f AA |
996 | hwsim_edge_unsubscribe_me(phy); |
997 | ||
998 | list_del(&phy->list); | |
1c9f4a3f AA |
999 | |
1000 | rcu_read_lock(); | |
28a5501c DM |
1001 | list_for_each_entry_rcu(e, &phy->edges, list) { |
1002 | list_del_rcu(&e->list); | |
1003 | hwsim_free_edge(e); | |
1004 | } | |
1c9f4a3f AA |
1005 | pib = rcu_dereference(phy->pib); |
1006 | rcu_read_unlock(); | |
1007 | ||
1008 | kfree_rcu(pib, rcu); | |
f25da51f AA |
1009 | |
1010 | ieee802154_unregister_hw(phy->hw); | |
1011 | ieee802154_free_hw(phy->hw); | |
1012 | } | |
1013 | ||
1014 | static int hwsim_probe(struct platform_device *pdev) | |
1015 | { | |
1016 | struct hwsim_phy *phy, *tmp; | |
1017 | int err, i; | |
1018 | ||
1019 | for (i = 0; i < 2; i++) { | |
1020 | err = hwsim_add_one(NULL, &pdev->dev, true); | |
1021 | if (err < 0) | |
1022 | goto err_slave; | |
1023 | } | |
1024 | ||
1025 | dev_info(&pdev->dev, "Added 2 mac802154 hwsim hardware radios\n"); | |
1026 | return 0; | |
1027 | ||
1028 | err_slave: | |
1029 | mutex_lock(&hwsim_phys_lock); | |
1030 | list_for_each_entry_safe(phy, tmp, &hwsim_phys, list) | |
1031 | hwsim_del(phy); | |
1032 | mutex_unlock(&hwsim_phys_lock); | |
1033 | return err; | |
1034 | } | |
1035 | ||
1036 | static int hwsim_remove(struct platform_device *pdev) | |
1037 | { | |
1038 | struct hwsim_phy *phy, *tmp; | |
1039 | ||
1040 | mutex_lock(&hwsim_phys_lock); | |
1041 | list_for_each_entry_safe(phy, tmp, &hwsim_phys, list) | |
1042 | hwsim_del(phy); | |
1043 | mutex_unlock(&hwsim_phys_lock); | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | static struct platform_driver mac802154hwsim_driver = { | |
1049 | .probe = hwsim_probe, | |
1050 | .remove = hwsim_remove, | |
1051 | .driver = { | |
1052 | .name = "mac802154_hwsim", | |
1053 | }, | |
1054 | }; | |
1055 | ||
1056 | static __init int hwsim_init_module(void) | |
1057 | { | |
1058 | int rc; | |
1059 | ||
1060 | rc = genl_register_family(&hwsim_genl_family); | |
1061 | if (rc) | |
1062 | return rc; | |
1063 | ||
1064 | mac802154hwsim_dev = platform_device_register_simple("mac802154_hwsim", | |
1065 | -1, NULL, 0); | |
1066 | if (IS_ERR(mac802154hwsim_dev)) { | |
1067 | rc = PTR_ERR(mac802154hwsim_dev); | |
1068 | goto platform_dev; | |
1069 | } | |
1070 | ||
1071 | rc = platform_driver_register(&mac802154hwsim_driver); | |
1072 | if (rc < 0) | |
1073 | goto platform_drv; | |
1074 | ||
1075 | return 0; | |
1076 | ||
1077 | platform_drv: | |
f25da51f | 1078 | platform_device_unregister(mac802154hwsim_dev); |
1cbbbf39 Y |
1079 | platform_dev: |
1080 | genl_unregister_family(&hwsim_genl_family); | |
f25da51f AA |
1081 | return rc; |
1082 | } | |
1083 | ||
1084 | static __exit void hwsim_remove_module(void) | |
1085 | { | |
1086 | genl_unregister_family(&hwsim_genl_family); | |
1087 | platform_driver_unregister(&mac802154hwsim_driver); | |
1088 | platform_device_unregister(mac802154hwsim_dev); | |
1089 | } | |
1090 | ||
1091 | module_init(hwsim_init_module); | |
1092 | module_exit(hwsim_remove_module); |