Commit | Line | Data |
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4d12b8b1 LRV |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
3 | * | |
4 | * Authors: | |
5 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> | |
6 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the | |
20 | * Free Software Foundation, Inc., | |
21 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | */ | |
23 | ||
52858b51 | 24 | #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__ |
20c239c1 | 25 | |
4d12b8b1 LRV |
26 | #include <net/genetlink.h> |
27 | #include <linux/nfc.h> | |
28 | #include <linux/slab.h> | |
29 | ||
30 | #include "nfc.h" | |
30cc4587 | 31 | #include "llcp.h" |
52feb444 | 32 | |
4d12b8b1 LRV |
33 | static struct genl_multicast_group nfc_genl_event_mcgrp = { |
34 | .name = NFC_GENL_MCAST_EVENT_NAME, | |
35 | }; | |
36 | ||
e5fe4cf8 | 37 | static struct genl_family nfc_genl_family = { |
4d12b8b1 LRV |
38 | .id = GENL_ID_GENERATE, |
39 | .hdrsize = 0, | |
40 | .name = NFC_GENL_NAME, | |
41 | .version = NFC_GENL_VERSION, | |
42 | .maxattr = NFC_ATTR_MAX, | |
43 | }; | |
44 | ||
45 | static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = { | |
46 | [NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 }, | |
47 | [NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING, | |
48 | .len = NFC_DEVICE_NAME_MAXSIZE }, | |
49 | [NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 }, | |
1ed28f61 SO |
50 | [NFC_ATTR_COMM_MODE] = { .type = NLA_U8 }, |
51 | [NFC_ATTR_RF_MODE] = { .type = NLA_U8 }, | |
c970a1ac | 52 | [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 }, |
fe7c5800 SO |
53 | [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 }, |
54 | [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 }, | |
8af362d1 TE |
55 | [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 }, |
56 | [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 }, | |
57 | [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 }, | |
d9b8d8e1 | 58 | [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED }, |
9674da87 EL |
59 | [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING, |
60 | .len = NFC_FIRMWARE_NAME_MAXSIZE }, | |
d9b8d8e1 TE |
61 | }; |
62 | ||
63 | static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = { | |
64 | [NFC_SDP_ATTR_URI] = { .type = NLA_STRING }, | |
65 | [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 }, | |
4d12b8b1 LRV |
66 | }; |
67 | ||
68 | static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target, | |
0a40acb2 | 69 | struct netlink_callback *cb, int flags) |
4d12b8b1 LRV |
70 | { |
71 | void *hdr; | |
72 | ||
15e47304 | 73 | hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
0a40acb2 | 74 | &nfc_genl_family, flags, NFC_CMD_GET_TARGET); |
4d12b8b1 LRV |
75 | if (!hdr) |
76 | return -EMSGSIZE; | |
77 | ||
78 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
79 | ||
1e6428d8 DM |
80 | if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) || |
81 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) || | |
82 | nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) || | |
83 | nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res)) | |
84 | goto nla_put_failure; | |
85 | if (target->nfcid1_len > 0 && | |
86 | nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len, | |
87 | target->nfcid1)) | |
88 | goto nla_put_failure; | |
89 | if (target->sensb_res_len > 0 && | |
90 | nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len, | |
91 | target->sensb_res)) | |
92 | goto nla_put_failure; | |
93 | if (target->sensf_res_len > 0 && | |
94 | nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len, | |
95 | target->sensf_res)) | |
96 | goto nla_put_failure; | |
4d12b8b1 LRV |
97 | |
98 | return genlmsg_end(msg, hdr); | |
99 | ||
100 | nla_put_failure: | |
101 | genlmsg_cancel(msg, hdr); | |
102 | return -EMSGSIZE; | |
103 | } | |
104 | ||
105 | static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) | |
106 | { | |
107 | struct nfc_dev *dev; | |
108 | int rc; | |
109 | u32 idx; | |
110 | ||
111 | rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize, | |
0a40acb2 SO |
112 | nfc_genl_family.attrbuf, |
113 | nfc_genl_family.maxattr, | |
114 | nfc_genl_policy); | |
4d12b8b1 LRV |
115 | if (rc < 0) |
116 | return ERR_PTR(rc); | |
117 | ||
118 | if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]) | |
119 | return ERR_PTR(-EINVAL); | |
120 | ||
121 | idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]); | |
122 | ||
123 | dev = nfc_get_device(idx); | |
124 | if (!dev) | |
125 | return ERR_PTR(-ENODEV); | |
126 | ||
127 | return dev; | |
128 | } | |
129 | ||
130 | static int nfc_genl_dump_targets(struct sk_buff *skb, | |
0a40acb2 | 131 | struct netlink_callback *cb) |
4d12b8b1 LRV |
132 | { |
133 | int i = cb->args[0]; | |
134 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
135 | int rc; | |
136 | ||
4d12b8b1 LRV |
137 | if (!dev) { |
138 | dev = __get_device_from_cb(cb); | |
139 | if (IS_ERR(dev)) | |
140 | return PTR_ERR(dev); | |
141 | ||
142 | cb->args[1] = (long) dev; | |
143 | } | |
144 | ||
d4ccb132 | 145 | device_lock(&dev->dev); |
4d12b8b1 LRV |
146 | |
147 | cb->seq = dev->targets_generation; | |
148 | ||
149 | while (i < dev->n_targets) { | |
150 | rc = nfc_genl_send_target(skb, &dev->targets[i], cb, | |
0a40acb2 | 151 | NLM_F_MULTI); |
4d12b8b1 LRV |
152 | if (rc < 0) |
153 | break; | |
154 | ||
155 | i++; | |
156 | } | |
157 | ||
d4ccb132 | 158 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
159 | |
160 | cb->args[0] = i; | |
161 | ||
162 | return skb->len; | |
163 | } | |
164 | ||
165 | static int nfc_genl_dump_targets_done(struct netlink_callback *cb) | |
166 | { | |
167 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
168 | ||
4d12b8b1 LRV |
169 | if (dev) |
170 | nfc_put_device(dev); | |
171 | ||
172 | return 0; | |
173 | } | |
174 | ||
175 | int nfc_genl_targets_found(struct nfc_dev *dev) | |
176 | { | |
177 | struct sk_buff *msg; | |
178 | void *hdr; | |
179 | ||
15e47304 | 180 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 181 | |
58050fce | 182 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
4d12b8b1 LRV |
183 | if (!msg) |
184 | return -ENOMEM; | |
185 | ||
186 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 187 | NFC_EVENT_TARGETS_FOUND); |
4d12b8b1 LRV |
188 | if (!hdr) |
189 | goto free_msg; | |
190 | ||
1e6428d8 DM |
191 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
192 | goto nla_put_failure; | |
4d12b8b1 LRV |
193 | |
194 | genlmsg_end(msg, hdr); | |
195 | ||
196 | return genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_ATOMIC); | |
197 | ||
198 | nla_put_failure: | |
199 | genlmsg_cancel(msg, hdr); | |
200 | free_msg: | |
201 | nlmsg_free(msg); | |
202 | return -EMSGSIZE; | |
203 | } | |
204 | ||
8112a5c9 SO |
205 | int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) |
206 | { | |
207 | struct sk_buff *msg; | |
208 | void *hdr; | |
209 | ||
58050fce | 210 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
8112a5c9 SO |
211 | if (!msg) |
212 | return -ENOMEM; | |
213 | ||
214 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
215 | NFC_EVENT_TARGET_LOST); | |
216 | if (!hdr) | |
217 | goto free_msg; | |
218 | ||
59ef43e6 JL |
219 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
220 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
221 | goto nla_put_failure; | |
8112a5c9 SO |
222 | |
223 | genlmsg_end(msg, hdr); | |
224 | ||
225 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); | |
226 | ||
227 | return 0; | |
228 | ||
fc40a8c1 SO |
229 | nla_put_failure: |
230 | genlmsg_cancel(msg, hdr); | |
231 | free_msg: | |
232 | nlmsg_free(msg); | |
233 | return -EMSGSIZE; | |
234 | } | |
235 | ||
236 | int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) | |
237 | { | |
238 | struct sk_buff *msg; | |
239 | void *hdr; | |
240 | ||
58050fce | 241 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
242 | if (!msg) |
243 | return -ENOMEM; | |
244 | ||
245 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
246 | NFC_EVENT_TM_ACTIVATED); | |
247 | if (!hdr) | |
248 | goto free_msg; | |
249 | ||
250 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
251 | goto nla_put_failure; | |
252 | if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) | |
253 | goto nla_put_failure; | |
254 | ||
255 | genlmsg_end(msg, hdr); | |
256 | ||
257 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); | |
258 | ||
259 | return 0; | |
260 | ||
261 | nla_put_failure: | |
262 | genlmsg_cancel(msg, hdr); | |
263 | free_msg: | |
264 | nlmsg_free(msg); | |
265 | return -EMSGSIZE; | |
266 | } | |
267 | ||
268 | int nfc_genl_tm_deactivated(struct nfc_dev *dev) | |
269 | { | |
270 | struct sk_buff *msg; | |
271 | void *hdr; | |
272 | ||
58050fce | 273 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
274 | if (!msg) |
275 | return -ENOMEM; | |
276 | ||
277 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
278 | NFC_EVENT_TM_DEACTIVATED); | |
279 | if (!hdr) | |
280 | goto free_msg; | |
281 | ||
282 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
283 | goto nla_put_failure; | |
284 | ||
285 | genlmsg_end(msg, hdr); | |
286 | ||
287 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); | |
288 | ||
289 | return 0; | |
290 | ||
8112a5c9 SO |
291 | nla_put_failure: |
292 | genlmsg_cancel(msg, hdr); | |
293 | free_msg: | |
294 | nlmsg_free(msg); | |
295 | return -EMSGSIZE; | |
296 | } | |
297 | ||
4d12b8b1 LRV |
298 | int nfc_genl_device_added(struct nfc_dev *dev) |
299 | { | |
300 | struct sk_buff *msg; | |
301 | void *hdr; | |
302 | ||
58050fce | 303 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
304 | if (!msg) |
305 | return -ENOMEM; | |
306 | ||
307 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 308 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
309 | if (!hdr) |
310 | goto free_msg; | |
311 | ||
1e6428d8 DM |
312 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
313 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
314 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
315 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up)) | |
316 | goto nla_put_failure; | |
4d12b8b1 LRV |
317 | |
318 | genlmsg_end(msg, hdr); | |
319 | ||
320 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); | |
321 | ||
322 | return 0; | |
323 | ||
324 | nla_put_failure: | |
325 | genlmsg_cancel(msg, hdr); | |
326 | free_msg: | |
327 | nlmsg_free(msg); | |
328 | return -EMSGSIZE; | |
329 | } | |
330 | ||
331 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
332 | { | |
333 | struct sk_buff *msg; | |
334 | void *hdr; | |
335 | ||
58050fce | 336 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
337 | if (!msg) |
338 | return -ENOMEM; | |
339 | ||
340 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 341 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
342 | if (!hdr) |
343 | goto free_msg; | |
344 | ||
1e6428d8 DM |
345 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
346 | goto nla_put_failure; | |
4d12b8b1 LRV |
347 | |
348 | genlmsg_end(msg, hdr); | |
349 | ||
350 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); | |
351 | ||
352 | return 0; | |
353 | ||
354 | nla_put_failure: | |
355 | genlmsg_cancel(msg, hdr); | |
356 | free_msg: | |
357 | nlmsg_free(msg); | |
358 | return -EMSGSIZE; | |
359 | } | |
360 | ||
d9b8d8e1 TE |
361 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
362 | { | |
363 | struct sk_buff *msg; | |
364 | struct nlattr *sdp_attr, *uri_attr; | |
365 | struct nfc_llcp_sdp_tlv *sdres; | |
366 | struct hlist_node *n; | |
367 | void *hdr; | |
368 | int rc = -EMSGSIZE; | |
369 | int i; | |
370 | ||
371 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
372 | if (!msg) | |
373 | return -ENOMEM; | |
374 | ||
375 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
376 | NFC_EVENT_LLC_SDRES); | |
377 | if (!hdr) | |
378 | goto free_msg; | |
379 | ||
380 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
381 | goto nla_put_failure; | |
382 | ||
383 | sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP); | |
384 | if (sdp_attr == NULL) { | |
385 | rc = -ENOMEM; | |
386 | goto nla_put_failure; | |
387 | } | |
388 | ||
389 | i = 1; | |
390 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
391 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
392 | ||
393 | uri_attr = nla_nest_start(msg, i++); | |
394 | if (uri_attr == NULL) { | |
395 | rc = -ENOMEM; | |
396 | goto nla_put_failure; | |
397 | } | |
398 | ||
399 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
400 | goto nla_put_failure; | |
401 | ||
402 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
403 | goto nla_put_failure; | |
404 | ||
405 | nla_nest_end(msg, uri_attr); | |
406 | ||
407 | hlist_del(&sdres->node); | |
408 | ||
409 | nfc_llcp_free_sdp_tlv(sdres); | |
410 | } | |
411 | ||
412 | nla_nest_end(msg, sdp_attr); | |
413 | ||
414 | genlmsg_end(msg, hdr); | |
415 | ||
416 | return genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_ATOMIC); | |
417 | ||
418 | nla_put_failure: | |
419 | genlmsg_cancel(msg, hdr); | |
420 | ||
421 | free_msg: | |
422 | nlmsg_free(msg); | |
423 | ||
424 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
425 | ||
426 | return rc; | |
427 | } | |
428 | ||
2757c372 SO |
429 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
430 | { | |
431 | struct sk_buff *msg; | |
432 | void *hdr; | |
433 | ||
434 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
435 | if (!msg) | |
436 | return -ENOMEM; | |
437 | ||
438 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
439 | NFC_EVENT_SE_ADDED); | |
440 | if (!hdr) | |
441 | goto free_msg; | |
442 | ||
443 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
444 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
445 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
446 | goto nla_put_failure; | |
447 | ||
448 | genlmsg_end(msg, hdr); | |
449 | ||
450 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); | |
451 | ||
452 | return 0; | |
453 | ||
454 | nla_put_failure: | |
455 | genlmsg_cancel(msg, hdr); | |
456 | free_msg: | |
457 | nlmsg_free(msg); | |
458 | return -EMSGSIZE; | |
459 | } | |
460 | ||
461 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
462 | { | |
463 | struct sk_buff *msg; | |
464 | void *hdr; | |
465 | ||
466 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
467 | if (!msg) | |
468 | return -ENOMEM; | |
469 | ||
470 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
471 | NFC_EVENT_SE_REMOVED); | |
472 | if (!hdr) | |
473 | goto free_msg; | |
474 | ||
475 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
476 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
477 | goto nla_put_failure; | |
478 | ||
479 | genlmsg_end(msg, hdr); | |
480 | ||
481 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); | |
482 | ||
483 | return 0; | |
484 | ||
485 | nla_put_failure: | |
486 | genlmsg_cancel(msg, hdr); | |
487 | free_msg: | |
488 | nlmsg_free(msg); | |
489 | return -EMSGSIZE; | |
490 | } | |
491 | ||
4d12b8b1 | 492 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 493 | u32 portid, u32 seq, |
0a40acb2 SO |
494 | struct netlink_callback *cb, |
495 | int flags) | |
4d12b8b1 LRV |
496 | { |
497 | void *hdr; | |
498 | ||
15e47304 | 499 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 500 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
501 | if (!hdr) |
502 | return -EMSGSIZE; | |
503 | ||
504 | if (cb) | |
505 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
506 | ||
1e6428d8 DM |
507 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
508 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
509 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
7ad39395 TE |
510 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || |
511 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
1e6428d8 | 512 | goto nla_put_failure; |
4d12b8b1 LRV |
513 | |
514 | return genlmsg_end(msg, hdr); | |
515 | ||
516 | nla_put_failure: | |
517 | genlmsg_cancel(msg, hdr); | |
518 | return -EMSGSIZE; | |
519 | } | |
520 | ||
521 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 522 | struct netlink_callback *cb) |
4d12b8b1 LRV |
523 | { |
524 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
525 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
526 | bool first_call = false; | |
527 | ||
4d12b8b1 LRV |
528 | if (!iter) { |
529 | first_call = true; | |
530 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
531 | if (!iter) | |
532 | return -ENOMEM; | |
533 | cb->args[0] = (long) iter; | |
534 | } | |
535 | ||
536 | mutex_lock(&nfc_devlist_mutex); | |
537 | ||
538 | cb->seq = nfc_devlist_generation; | |
539 | ||
540 | if (first_call) { | |
541 | nfc_device_iter_init(iter); | |
542 | dev = nfc_device_iter_next(iter); | |
543 | } | |
544 | ||
545 | while (dev) { | |
546 | int rc; | |
547 | ||
15e47304 | 548 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 549 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
550 | if (rc < 0) |
551 | break; | |
552 | ||
553 | dev = nfc_device_iter_next(iter); | |
554 | } | |
555 | ||
556 | mutex_unlock(&nfc_devlist_mutex); | |
557 | ||
558 | cb->args[1] = (long) dev; | |
559 | ||
560 | return skb->len; | |
561 | } | |
562 | ||
563 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
564 | { | |
565 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
566 | ||
4d12b8b1 LRV |
567 | nfc_device_iter_exit(iter); |
568 | kfree(iter); | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
1ed28f61 | 573 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 574 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
575 | { |
576 | struct sk_buff *msg; | |
577 | void *hdr; | |
578 | ||
579 | pr_debug("DEP link is up\n"); | |
580 | ||
58050fce | 581 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
582 | if (!msg) |
583 | return -ENOMEM; | |
584 | ||
0a40acb2 | 585 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
586 | if (!hdr) |
587 | goto free_msg; | |
588 | ||
1e6428d8 DM |
589 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
590 | goto nla_put_failure; | |
591 | if (rf_mode == NFC_RF_INITIATOR && | |
592 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
593 | goto nla_put_failure; | |
594 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
595 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
596 | goto nla_put_failure; | |
1ed28f61 SO |
597 | |
598 | genlmsg_end(msg, hdr); | |
599 | ||
600 | dev->dep_link_up = true; | |
601 | ||
602 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_ATOMIC); | |
603 | ||
604 | return 0; | |
605 | ||
606 | nla_put_failure: | |
607 | genlmsg_cancel(msg, hdr); | |
608 | free_msg: | |
609 | nlmsg_free(msg); | |
610 | return -EMSGSIZE; | |
611 | } | |
612 | ||
613 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
614 | { | |
615 | struct sk_buff *msg; | |
616 | void *hdr; | |
617 | ||
618 | pr_debug("DEP link is down\n"); | |
619 | ||
58050fce | 620 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
621 | if (!msg) |
622 | return -ENOMEM; | |
623 | ||
624 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 625 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
626 | if (!hdr) |
627 | goto free_msg; | |
628 | ||
1e6428d8 DM |
629 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
630 | goto nla_put_failure; | |
1ed28f61 SO |
631 | |
632 | genlmsg_end(msg, hdr); | |
633 | ||
634 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_ATOMIC); | |
635 | ||
636 | return 0; | |
637 | ||
638 | nla_put_failure: | |
639 | genlmsg_cancel(msg, hdr); | |
640 | free_msg: | |
641 | nlmsg_free(msg); | |
642 | return -EMSGSIZE; | |
643 | } | |
644 | ||
4d12b8b1 LRV |
645 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
646 | { | |
647 | struct sk_buff *msg; | |
648 | struct nfc_dev *dev; | |
649 | u32 idx; | |
650 | int rc = -ENOBUFS; | |
651 | ||
4d12b8b1 LRV |
652 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
653 | return -EINVAL; | |
654 | ||
655 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
656 | ||
657 | dev = nfc_get_device(idx); | |
658 | if (!dev) | |
659 | return -ENODEV; | |
660 | ||
58050fce | 661 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
662 | if (!msg) { |
663 | rc = -ENOMEM; | |
664 | goto out_putdev; | |
665 | } | |
666 | ||
15e47304 | 667 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 668 | NULL, 0); |
4d12b8b1 LRV |
669 | if (rc < 0) |
670 | goto out_free; | |
671 | ||
672 | nfc_put_device(dev); | |
673 | ||
674 | return genlmsg_reply(msg, info); | |
675 | ||
676 | out_free: | |
677 | nlmsg_free(msg); | |
678 | out_putdev: | |
679 | nfc_put_device(dev); | |
680 | return rc; | |
681 | } | |
682 | ||
8b3fe7b5 IE |
683 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
684 | { | |
685 | struct nfc_dev *dev; | |
686 | int rc; | |
687 | u32 idx; | |
688 | ||
8b3fe7b5 IE |
689 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
690 | return -EINVAL; | |
691 | ||
692 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
693 | ||
694 | dev = nfc_get_device(idx); | |
695 | if (!dev) | |
696 | return -ENODEV; | |
697 | ||
698 | rc = nfc_dev_up(dev); | |
699 | ||
700 | nfc_put_device(dev); | |
701 | return rc; | |
702 | } | |
703 | ||
704 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
705 | { | |
706 | struct nfc_dev *dev; | |
707 | int rc; | |
708 | u32 idx; | |
709 | ||
8b3fe7b5 IE |
710 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
711 | return -EINVAL; | |
712 | ||
713 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
714 | ||
715 | dev = nfc_get_device(idx); | |
716 | if (!dev) | |
717 | return -ENODEV; | |
718 | ||
719 | rc = nfc_dev_down(dev); | |
720 | ||
721 | nfc_put_device(dev); | |
722 | return rc; | |
723 | } | |
724 | ||
4d12b8b1 LRV |
725 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
726 | { | |
727 | struct nfc_dev *dev; | |
728 | int rc; | |
729 | u32 idx; | |
fe7c5800 | 730 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 731 | |
1ed28f61 SO |
732 | pr_debug("Poll start\n"); |
733 | ||
4d12b8b1 | 734 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
735 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
736 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 737 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
738 | return -EINVAL; |
739 | ||
740 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
741 | |
742 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
743 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
744 | |
745 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
746 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
747 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
748 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
749 | |
750 | dev = nfc_get_device(idx); | |
751 | if (!dev) | |
752 | return -ENODEV; | |
753 | ||
754 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
755 | ||
fe7c5800 | 756 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 757 | if (!rc) |
15e47304 | 758 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
759 | |
760 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
761 | ||
762 | nfc_put_device(dev); | |
763 | return rc; | |
764 | } | |
765 | ||
766 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
767 | { | |
768 | struct nfc_dev *dev; | |
769 | int rc; | |
770 | u32 idx; | |
771 | ||
4d12b8b1 LRV |
772 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
773 | return -EINVAL; | |
774 | ||
775 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
776 | ||
777 | dev = nfc_get_device(idx); | |
778 | if (!dev) | |
779 | return -ENODEV; | |
780 | ||
a831b913 SO |
781 | device_lock(&dev->dev); |
782 | ||
783 | if (!dev->polling) { | |
784 | device_unlock(&dev->dev); | |
785 | return -EINVAL; | |
786 | } | |
787 | ||
788 | device_unlock(&dev->dev); | |
789 | ||
4d12b8b1 LRV |
790 | mutex_lock(&dev->genl_data.genl_data_mutex); |
791 | ||
15e47304 | 792 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
793 | rc = -EBUSY; |
794 | goto out; | |
795 | } | |
796 | ||
797 | rc = nfc_stop_poll(dev); | |
15e47304 | 798 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
799 | |
800 | out: | |
801 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
802 | nfc_put_device(dev); | |
803 | return rc; | |
804 | } | |
805 | ||
1ed28f61 SO |
806 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
807 | { | |
808 | struct nfc_dev *dev; | |
809 | int rc, tgt_idx; | |
810 | u32 idx; | |
47807d3d | 811 | u8 comm; |
1ed28f61 SO |
812 | |
813 | pr_debug("DEP link up\n"); | |
814 | ||
815 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 816 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
817 | return -EINVAL; |
818 | ||
819 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
820 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
821 | tgt_idx = NFC_TARGET_IDX_ANY; | |
822 | else | |
823 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
824 | ||
825 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
826 | |
827 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
828 | return -EINVAL; | |
829 | ||
1ed28f61 SO |
830 | dev = nfc_get_device(idx); |
831 | if (!dev) | |
832 | return -ENODEV; | |
833 | ||
47807d3d | 834 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
835 | |
836 | nfc_put_device(dev); | |
837 | ||
838 | return rc; | |
839 | } | |
840 | ||
841 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
842 | { | |
843 | struct nfc_dev *dev; | |
844 | int rc; | |
845 | u32 idx; | |
846 | ||
847 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
848 | return -EINVAL; | |
849 | ||
850 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
851 | ||
852 | dev = nfc_get_device(idx); | |
853 | if (!dev) | |
854 | return -ENODEV; | |
855 | ||
856 | rc = nfc_dep_link_down(dev); | |
857 | ||
858 | nfc_put_device(dev); | |
859 | return rc; | |
860 | } | |
861 | ||
52feb444 TE |
862 | static int nfc_genl_send_params(struct sk_buff *msg, |
863 | struct nfc_llcp_local *local, | |
864 | u32 portid, u32 seq) | |
865 | { | |
866 | void *hdr; | |
867 | ||
868 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
869 | NFC_CMD_LLC_GET_PARAMS); | |
870 | if (!hdr) | |
871 | return -EMSGSIZE; | |
872 | ||
873 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
874 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
875 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
876 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
877 | goto nla_put_failure; | |
878 | ||
879 | return genlmsg_end(msg, hdr); | |
880 | ||
881 | nla_put_failure: | |
882 | ||
883 | genlmsg_cancel(msg, hdr); | |
884 | return -EMSGSIZE; | |
885 | } | |
886 | ||
887 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
888 | { | |
889 | struct nfc_dev *dev; | |
890 | struct nfc_llcp_local *local; | |
891 | int rc = 0; | |
892 | struct sk_buff *msg = NULL; | |
893 | u32 idx; | |
894 | ||
895 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
896 | return -EINVAL; | |
897 | ||
898 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
899 | ||
900 | dev = nfc_get_device(idx); | |
901 | if (!dev) | |
902 | return -ENODEV; | |
903 | ||
904 | device_lock(&dev->dev); | |
905 | ||
906 | local = nfc_llcp_find_local(dev); | |
907 | if (!local) { | |
908 | rc = -ENODEV; | |
909 | goto exit; | |
910 | } | |
911 | ||
912 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
913 | if (!msg) { | |
914 | rc = -ENOMEM; | |
915 | goto exit; | |
916 | } | |
917 | ||
918 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
919 | ||
920 | exit: | |
921 | device_unlock(&dev->dev); | |
922 | ||
923 | nfc_put_device(dev); | |
924 | ||
925 | if (rc < 0) { | |
926 | if (msg) | |
927 | nlmsg_free(msg); | |
928 | ||
929 | return rc; | |
930 | } | |
931 | ||
932 | return genlmsg_reply(msg, info); | |
933 | } | |
934 | ||
935 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
936 | { | |
937 | struct nfc_dev *dev; | |
938 | struct nfc_llcp_local *local; | |
939 | u8 rw = 0; | |
940 | u16 miux = 0; | |
941 | u32 idx; | |
942 | int rc = 0; | |
943 | ||
944 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
945 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
946 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
947 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
948 | return -EINVAL; | |
949 | ||
950 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
951 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
952 | ||
953 | if (rw > LLCP_MAX_RW) | |
954 | return -EINVAL; | |
955 | } | |
956 | ||
957 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
958 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
959 | ||
960 | if (miux > LLCP_MAX_MIUX) | |
961 | return -EINVAL; | |
962 | } | |
963 | ||
964 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
965 | ||
966 | dev = nfc_get_device(idx); | |
967 | if (!dev) | |
968 | return -ENODEV; | |
969 | ||
970 | device_lock(&dev->dev); | |
971 | ||
972 | local = nfc_llcp_find_local(dev); | |
973 | if (!local) { | |
974 | nfc_put_device(dev); | |
975 | rc = -ENODEV; | |
976 | goto exit; | |
977 | } | |
978 | ||
979 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
980 | if (dev->dep_link_up) { | |
981 | rc = -EINPROGRESS; | |
982 | goto exit; | |
983 | } | |
984 | ||
985 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
986 | } | |
987 | ||
988 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
989 | local->rw = rw; | |
990 | ||
991 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
992 | local->miux = cpu_to_be16(miux); | |
993 | ||
994 | exit: | |
995 | device_unlock(&dev->dev); | |
996 | ||
997 | nfc_put_device(dev); | |
998 | ||
999 | return rc; | |
1000 | } | |
1001 | ||
d9b8d8e1 TE |
1002 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1003 | { | |
1004 | struct nfc_dev *dev; | |
1005 | struct nfc_llcp_local *local; | |
1006 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1007 | u32 idx; | |
1008 | u8 tid; | |
1009 | char *uri; | |
1010 | int rc = 0, rem; | |
1011 | size_t uri_len, tlvs_len; | |
1012 | struct hlist_head sdreq_list; | |
1013 | struct nfc_llcp_sdp_tlv *sdreq; | |
1014 | ||
1015 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1016 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1017 | return -EINVAL; | |
1018 | ||
1019 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1020 | ||
1021 | dev = nfc_get_device(idx); | |
1022 | if (!dev) { | |
1023 | rc = -ENODEV; | |
1024 | goto exit; | |
1025 | } | |
1026 | ||
1027 | device_lock(&dev->dev); | |
1028 | ||
1029 | if (dev->dep_link_up == false) { | |
1030 | rc = -ENOLINK; | |
1031 | goto exit; | |
1032 | } | |
1033 | ||
1034 | local = nfc_llcp_find_local(dev); | |
1035 | if (!local) { | |
1036 | nfc_put_device(dev); | |
1037 | rc = -ENODEV; | |
1038 | goto exit; | |
1039 | } | |
1040 | ||
1041 | INIT_HLIST_HEAD(&sdreq_list); | |
1042 | ||
1043 | tlvs_len = 0; | |
1044 | ||
1045 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
1046 | rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr, | |
1047 | nfc_sdp_genl_policy); | |
1048 | ||
1049 | if (rc != 0) { | |
1050 | rc = -EINVAL; | |
1051 | goto exit; | |
1052 | } | |
1053 | ||
1054 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1055 | continue; | |
1056 | ||
1057 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1058 | if (uri_len == 0) | |
1059 | continue; | |
1060 | ||
1061 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1062 | if (uri == NULL || *uri == 0) | |
1063 | continue; | |
1064 | ||
1065 | tid = local->sdreq_next_tid++; | |
1066 | ||
1067 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1068 | if (sdreq == NULL) { | |
1069 | rc = -ENOMEM; | |
1070 | goto exit; | |
1071 | } | |
1072 | ||
1073 | tlvs_len += sdreq->tlv_len; | |
1074 | ||
1075 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1076 | } | |
1077 | ||
1078 | if (hlist_empty(&sdreq_list)) { | |
1079 | rc = -EINVAL; | |
1080 | goto exit; | |
1081 | } | |
1082 | ||
1083 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1084 | exit: | |
1085 | device_unlock(&dev->dev); | |
1086 | ||
1087 | nfc_put_device(dev); | |
1088 | ||
1089 | return rc; | |
1090 | } | |
1091 | ||
9ea7187c | 1092 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1093 | { |
1094 | struct nfc_dev *dev; | |
1095 | int rc; | |
1096 | u32 idx; | |
1097 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1098 | ||
1099 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1100 | return -EINVAL; | |
1101 | ||
1102 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1103 | ||
1104 | dev = nfc_get_device(idx); | |
1105 | if (!dev) | |
1106 | return -ENODEV; | |
1107 | ||
1108 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1109 | sizeof(firmware_name)); | |
1110 | ||
9ea7187c | 1111 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1112 | |
1113 | nfc_put_device(dev); | |
1114 | return rc; | |
1115 | } | |
1116 | ||
9ea7187c | 1117 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name) |
9674da87 EL |
1118 | { |
1119 | struct sk_buff *msg; | |
1120 | void *hdr; | |
1121 | ||
1122 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1123 | if (!msg) | |
1124 | return -ENOMEM; | |
1125 | ||
1126 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1127 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1128 | if (!hdr) |
1129 | goto free_msg; | |
1130 | ||
1131 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
1132 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
1133 | goto nla_put_failure; | |
1134 | ||
1135 | genlmsg_end(msg, hdr); | |
1136 | ||
1137 | genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL); | |
1138 | ||
1139 | return 0; | |
1140 | ||
1141 | nla_put_failure: | |
1142 | genlmsg_cancel(msg, hdr); | |
1143 | free_msg: | |
1144 | nlmsg_free(msg); | |
1145 | return -EMSGSIZE; | |
1146 | } | |
1147 | ||
be085653 SO |
1148 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1149 | { | |
1150 | struct nfc_dev *dev; | |
1151 | int rc; | |
1152 | u32 idx, se_idx; | |
1153 | ||
1154 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1155 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1156 | return -EINVAL; | |
1157 | ||
1158 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1159 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1160 | ||
1161 | dev = nfc_get_device(idx); | |
1162 | if (!dev) | |
1163 | return -ENODEV; | |
1164 | ||
1165 | rc = nfc_enable_se(dev, se_idx); | |
1166 | ||
1167 | nfc_put_device(dev); | |
1168 | return rc; | |
1169 | } | |
1170 | ||
1171 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1172 | { | |
1173 | struct nfc_dev *dev; | |
1174 | int rc; | |
1175 | u32 idx, se_idx; | |
1176 | ||
1177 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1178 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1179 | return -EINVAL; | |
1180 | ||
1181 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1182 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1183 | ||
1184 | dev = nfc_get_device(idx); | |
1185 | if (!dev) | |
1186 | return -ENODEV; | |
1187 | ||
1188 | rc = nfc_disable_se(dev, se_idx); | |
1189 | ||
1190 | nfc_put_device(dev); | |
1191 | return rc; | |
1192 | } | |
1193 | ||
4d12b8b1 LRV |
1194 | static struct genl_ops nfc_genl_ops[] = { |
1195 | { | |
1196 | .cmd = NFC_CMD_GET_DEVICE, | |
1197 | .doit = nfc_genl_get_device, | |
1198 | .dumpit = nfc_genl_dump_devices, | |
1199 | .done = nfc_genl_dump_devices_done, | |
1200 | .policy = nfc_genl_policy, | |
8b3fe7b5 IE |
1201 | }, |
1202 | { | |
1203 | .cmd = NFC_CMD_DEV_UP, | |
1204 | .doit = nfc_genl_dev_up, | |
1205 | .policy = nfc_genl_policy, | |
1206 | }, | |
1207 | { | |
1208 | .cmd = NFC_CMD_DEV_DOWN, | |
1209 | .doit = nfc_genl_dev_down, | |
1210 | .policy = nfc_genl_policy, | |
4d12b8b1 LRV |
1211 | }, |
1212 | { | |
1213 | .cmd = NFC_CMD_START_POLL, | |
1214 | .doit = nfc_genl_start_poll, | |
1215 | .policy = nfc_genl_policy, | |
1216 | }, | |
1217 | { | |
1218 | .cmd = NFC_CMD_STOP_POLL, | |
1219 | .doit = nfc_genl_stop_poll, | |
1220 | .policy = nfc_genl_policy, | |
1221 | }, | |
1ed28f61 SO |
1222 | { |
1223 | .cmd = NFC_CMD_DEP_LINK_UP, | |
1224 | .doit = nfc_genl_dep_link_up, | |
1225 | .policy = nfc_genl_policy, | |
1226 | }, | |
1227 | { | |
1228 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
1229 | .doit = nfc_genl_dep_link_down, | |
1230 | .policy = nfc_genl_policy, | |
1231 | }, | |
4d12b8b1 LRV |
1232 | { |
1233 | .cmd = NFC_CMD_GET_TARGET, | |
1234 | .dumpit = nfc_genl_dump_targets, | |
1235 | .done = nfc_genl_dump_targets_done, | |
1236 | .policy = nfc_genl_policy, | |
1237 | }, | |
52feb444 TE |
1238 | { |
1239 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
1240 | .doit = nfc_genl_llc_get_params, | |
1241 | .policy = nfc_genl_policy, | |
1242 | }, | |
1243 | { | |
1244 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
1245 | .doit = nfc_genl_llc_set_params, | |
1246 | .policy = nfc_genl_policy, | |
1247 | }, | |
d9b8d8e1 TE |
1248 | { |
1249 | .cmd = NFC_CMD_LLC_SDREQ, | |
1250 | .doit = nfc_genl_llc_sdreq, | |
1251 | .policy = nfc_genl_policy, | |
1252 | }, | |
9674da87 | 1253 | { |
9ea7187c SO |
1254 | .cmd = NFC_CMD_FW_DOWNLOAD, |
1255 | .doit = nfc_genl_fw_download, | |
9674da87 EL |
1256 | .policy = nfc_genl_policy, |
1257 | }, | |
be085653 SO |
1258 | { |
1259 | .cmd = NFC_CMD_ENABLE_SE, | |
1260 | .doit = nfc_genl_enable_se, | |
1261 | .policy = nfc_genl_policy, | |
1262 | }, | |
1263 | { | |
1264 | .cmd = NFC_CMD_DISABLE_SE, | |
1265 | .doit = nfc_genl_disable_se, | |
1266 | .policy = nfc_genl_policy, | |
1267 | }, | |
4d12b8b1 LRV |
1268 | }; |
1269 | ||
3c0cc8aa SJ |
1270 | |
1271 | struct urelease_work { | |
1272 | struct work_struct w; | |
c487606f | 1273 | int portid; |
3c0cc8aa SJ |
1274 | }; |
1275 | ||
1276 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1277 | { |
3c0cc8aa | 1278 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1279 | struct class_dev_iter iter; |
1280 | struct nfc_dev *dev; | |
1281 | ||
c487606f | 1282 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1283 | |
3c0cc8aa | 1284 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1285 | |
1286 | nfc_device_iter_init(&iter); | |
1287 | dev = nfc_device_iter_next(&iter); | |
1288 | ||
1289 | while (dev) { | |
3c0cc8aa SJ |
1290 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1291 | ||
c487606f | 1292 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1293 | nfc_stop_poll(dev); |
15e47304 | 1294 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1295 | } |
3c0cc8aa SJ |
1296 | |
1297 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1298 | ||
4d12b8b1 LRV |
1299 | dev = nfc_device_iter_next(&iter); |
1300 | } | |
1301 | ||
1302 | nfc_device_iter_exit(&iter); | |
1303 | ||
3c0cc8aa SJ |
1304 | mutex_unlock(&nfc_devlist_mutex); |
1305 | ||
1306 | kfree(w); | |
1307 | } | |
1308 | ||
1309 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1310 | unsigned long event, void *ptr) | |
1311 | { | |
1312 | struct netlink_notify *n = ptr; | |
1313 | struct urelease_work *w; | |
1314 | ||
1315 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1316 | goto out; | |
1317 | ||
c487606f | 1318 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1319 | |
1320 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1321 | if (w) { | |
1322 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1323 | w->portid = n->portid; |
3c0cc8aa SJ |
1324 | schedule_work((struct work_struct *) w); |
1325 | } | |
1326 | ||
4d12b8b1 LRV |
1327 | out: |
1328 | return NOTIFY_DONE; | |
1329 | } | |
1330 | ||
1331 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1332 | { | |
15e47304 | 1333 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1334 | mutex_init(&genl_data->genl_data_mutex); |
1335 | } | |
1336 | ||
1337 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1338 | { | |
1339 | mutex_destroy(&genl_data->genl_data_mutex); | |
1340 | } | |
1341 | ||
1342 | static struct notifier_block nl_notifier = { | |
1343 | .notifier_call = nfc_genl_rcv_nl_event, | |
1344 | }; | |
1345 | ||
1346 | /** | |
1347 | * nfc_genl_init() - Initialize netlink interface | |
1348 | * | |
1349 | * This initialization function registers the nfc netlink family. | |
1350 | */ | |
1351 | int __init nfc_genl_init(void) | |
1352 | { | |
1353 | int rc; | |
1354 | ||
1355 | rc = genl_register_family_with_ops(&nfc_genl_family, nfc_genl_ops, | |
0a40acb2 | 1356 | ARRAY_SIZE(nfc_genl_ops)); |
4d12b8b1 LRV |
1357 | if (rc) |
1358 | return rc; | |
1359 | ||
1360 | rc = genl_register_mc_group(&nfc_genl_family, &nfc_genl_event_mcgrp); | |
1361 | ||
1362 | netlink_register_notifier(&nl_notifier); | |
1363 | ||
1364 | return rc; | |
1365 | } | |
1366 | ||
1367 | /** | |
1368 | * nfc_genl_exit() - Deinitialize netlink interface | |
1369 | * | |
1370 | * This exit function unregisters the nfc netlink family. | |
1371 | */ | |
1372 | void nfc_genl_exit(void) | |
1373 | { | |
1374 | netlink_unregister_notifier(&nl_notifier); | |
1375 | genl_unregister_family(&nfc_genl_family); | |
1376 | } |