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 | |
2a94fe48 JB |
33 | static const struct genl_multicast_group nfc_genl_mcgrps[] = { |
34 | { .name = NFC_GENL_MCAST_EVENT_NAME, }, | |
4d12b8b1 LRV |
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 }, | |
5ce3f32b | 61 | [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY }, |
d9b8d8e1 TE |
62 | }; |
63 | ||
64 | static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = { | |
65 | [NFC_SDP_ATTR_URI] = { .type = NLA_STRING }, | |
66 | [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 }, | |
4d12b8b1 LRV |
67 | }; |
68 | ||
69 | static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target, | |
0a40acb2 | 70 | struct netlink_callback *cb, int flags) |
4d12b8b1 LRV |
71 | { |
72 | void *hdr; | |
73 | ||
15e47304 | 74 | hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
0a40acb2 | 75 | &nfc_genl_family, flags, NFC_CMD_GET_TARGET); |
4d12b8b1 LRV |
76 | if (!hdr) |
77 | return -EMSGSIZE; | |
78 | ||
79 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
80 | ||
1e6428d8 DM |
81 | if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) || |
82 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) || | |
83 | nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) || | |
84 | nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res)) | |
85 | goto nla_put_failure; | |
86 | if (target->nfcid1_len > 0 && | |
87 | nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len, | |
88 | target->nfcid1)) | |
89 | goto nla_put_failure; | |
90 | if (target->sensb_res_len > 0 && | |
91 | nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len, | |
92 | target->sensb_res)) | |
93 | goto nla_put_failure; | |
94 | if (target->sensf_res_len > 0 && | |
95 | nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len, | |
96 | target->sensf_res)) | |
97 | goto nla_put_failure; | |
4d12b8b1 LRV |
98 | |
99 | return genlmsg_end(msg, hdr); | |
100 | ||
101 | nla_put_failure: | |
102 | genlmsg_cancel(msg, hdr); | |
103 | return -EMSGSIZE; | |
104 | } | |
105 | ||
106 | static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) | |
107 | { | |
108 | struct nfc_dev *dev; | |
109 | int rc; | |
110 | u32 idx; | |
111 | ||
112 | rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize, | |
0a40acb2 SO |
113 | nfc_genl_family.attrbuf, |
114 | nfc_genl_family.maxattr, | |
115 | nfc_genl_policy); | |
4d12b8b1 LRV |
116 | if (rc < 0) |
117 | return ERR_PTR(rc); | |
118 | ||
119 | if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]) | |
120 | return ERR_PTR(-EINVAL); | |
121 | ||
122 | idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]); | |
123 | ||
124 | dev = nfc_get_device(idx); | |
125 | if (!dev) | |
126 | return ERR_PTR(-ENODEV); | |
127 | ||
128 | return dev; | |
129 | } | |
130 | ||
131 | static int nfc_genl_dump_targets(struct sk_buff *skb, | |
0a40acb2 | 132 | struct netlink_callback *cb) |
4d12b8b1 LRV |
133 | { |
134 | int i = cb->args[0]; | |
135 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
136 | int rc; | |
137 | ||
4d12b8b1 LRV |
138 | if (!dev) { |
139 | dev = __get_device_from_cb(cb); | |
140 | if (IS_ERR(dev)) | |
141 | return PTR_ERR(dev); | |
142 | ||
143 | cb->args[1] = (long) dev; | |
144 | } | |
145 | ||
d4ccb132 | 146 | device_lock(&dev->dev); |
4d12b8b1 LRV |
147 | |
148 | cb->seq = dev->targets_generation; | |
149 | ||
150 | while (i < dev->n_targets) { | |
151 | rc = nfc_genl_send_target(skb, &dev->targets[i], cb, | |
0a40acb2 | 152 | NLM_F_MULTI); |
4d12b8b1 LRV |
153 | if (rc < 0) |
154 | break; | |
155 | ||
156 | i++; | |
157 | } | |
158 | ||
d4ccb132 | 159 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
160 | |
161 | cb->args[0] = i; | |
162 | ||
163 | return skb->len; | |
164 | } | |
165 | ||
166 | static int nfc_genl_dump_targets_done(struct netlink_callback *cb) | |
167 | { | |
168 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
169 | ||
4d12b8b1 LRV |
170 | if (dev) |
171 | nfc_put_device(dev); | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
176 | int nfc_genl_targets_found(struct nfc_dev *dev) | |
177 | { | |
178 | struct sk_buff *msg; | |
179 | void *hdr; | |
180 | ||
15e47304 | 181 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 182 | |
58050fce | 183 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
4d12b8b1 LRV |
184 | if (!msg) |
185 | return -ENOMEM; | |
186 | ||
187 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 188 | NFC_EVENT_TARGETS_FOUND); |
4d12b8b1 LRV |
189 | if (!hdr) |
190 | goto free_msg; | |
191 | ||
1e6428d8 DM |
192 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
193 | goto nla_put_failure; | |
4d12b8b1 LRV |
194 | |
195 | genlmsg_end(msg, hdr); | |
196 | ||
2a94fe48 | 197 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
4d12b8b1 LRV |
198 | |
199 | nla_put_failure: | |
200 | genlmsg_cancel(msg, hdr); | |
201 | free_msg: | |
202 | nlmsg_free(msg); | |
203 | return -EMSGSIZE; | |
204 | } | |
205 | ||
8112a5c9 SO |
206 | int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) |
207 | { | |
208 | struct sk_buff *msg; | |
209 | void *hdr; | |
210 | ||
58050fce | 211 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
8112a5c9 SO |
212 | if (!msg) |
213 | return -ENOMEM; | |
214 | ||
215 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
216 | NFC_EVENT_TARGET_LOST); | |
217 | if (!hdr) | |
218 | goto free_msg; | |
219 | ||
59ef43e6 JL |
220 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
221 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
222 | goto nla_put_failure; | |
8112a5c9 SO |
223 | |
224 | genlmsg_end(msg, hdr); | |
225 | ||
2a94fe48 | 226 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
8112a5c9 SO |
227 | |
228 | return 0; | |
229 | ||
fc40a8c1 SO |
230 | nla_put_failure: |
231 | genlmsg_cancel(msg, hdr); | |
232 | free_msg: | |
233 | nlmsg_free(msg); | |
234 | return -EMSGSIZE; | |
235 | } | |
236 | ||
237 | int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) | |
238 | { | |
239 | struct sk_buff *msg; | |
240 | void *hdr; | |
241 | ||
58050fce | 242 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
243 | if (!msg) |
244 | return -ENOMEM; | |
245 | ||
246 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
247 | NFC_EVENT_TM_ACTIVATED); | |
248 | if (!hdr) | |
249 | goto free_msg; | |
250 | ||
251 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
252 | goto nla_put_failure; | |
253 | if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) | |
254 | goto nla_put_failure; | |
255 | ||
256 | genlmsg_end(msg, hdr); | |
257 | ||
2a94fe48 | 258 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
259 | |
260 | return 0; | |
261 | ||
262 | nla_put_failure: | |
263 | genlmsg_cancel(msg, hdr); | |
264 | free_msg: | |
265 | nlmsg_free(msg); | |
266 | return -EMSGSIZE; | |
267 | } | |
268 | ||
269 | int nfc_genl_tm_deactivated(struct nfc_dev *dev) | |
270 | { | |
271 | struct sk_buff *msg; | |
272 | void *hdr; | |
273 | ||
58050fce | 274 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
275 | if (!msg) |
276 | return -ENOMEM; | |
277 | ||
278 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
279 | NFC_EVENT_TM_DEACTIVATED); | |
280 | if (!hdr) | |
281 | goto free_msg; | |
282 | ||
283 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
284 | goto nla_put_failure; | |
285 | ||
286 | genlmsg_end(msg, hdr); | |
287 | ||
2a94fe48 | 288 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
289 | |
290 | return 0; | |
291 | ||
8112a5c9 SO |
292 | nla_put_failure: |
293 | genlmsg_cancel(msg, hdr); | |
294 | free_msg: | |
295 | nlmsg_free(msg); | |
296 | return -EMSGSIZE; | |
297 | } | |
298 | ||
4d12b8b1 LRV |
299 | int nfc_genl_device_added(struct nfc_dev *dev) |
300 | { | |
301 | struct sk_buff *msg; | |
302 | void *hdr; | |
303 | ||
58050fce | 304 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
305 | if (!msg) |
306 | return -ENOMEM; | |
307 | ||
308 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 309 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
310 | if (!hdr) |
311 | goto free_msg; | |
312 | ||
1e6428d8 DM |
313 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
314 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
315 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
316 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up)) | |
317 | goto nla_put_failure; | |
4d12b8b1 LRV |
318 | |
319 | genlmsg_end(msg, hdr); | |
320 | ||
2a94fe48 | 321 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
322 | |
323 | return 0; | |
324 | ||
325 | nla_put_failure: | |
326 | genlmsg_cancel(msg, hdr); | |
327 | free_msg: | |
328 | nlmsg_free(msg); | |
329 | return -EMSGSIZE; | |
330 | } | |
331 | ||
332 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
333 | { | |
334 | struct sk_buff *msg; | |
335 | void *hdr; | |
336 | ||
58050fce | 337 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
338 | if (!msg) |
339 | return -ENOMEM; | |
340 | ||
341 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 342 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
343 | if (!hdr) |
344 | goto free_msg; | |
345 | ||
1e6428d8 DM |
346 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
347 | goto nla_put_failure; | |
4d12b8b1 LRV |
348 | |
349 | genlmsg_end(msg, hdr); | |
350 | ||
2a94fe48 | 351 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
352 | |
353 | return 0; | |
354 | ||
355 | nla_put_failure: | |
356 | genlmsg_cancel(msg, hdr); | |
357 | free_msg: | |
358 | nlmsg_free(msg); | |
359 | return -EMSGSIZE; | |
360 | } | |
361 | ||
d9b8d8e1 TE |
362 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
363 | { | |
364 | struct sk_buff *msg; | |
365 | struct nlattr *sdp_attr, *uri_attr; | |
366 | struct nfc_llcp_sdp_tlv *sdres; | |
367 | struct hlist_node *n; | |
368 | void *hdr; | |
369 | int rc = -EMSGSIZE; | |
370 | int i; | |
371 | ||
372 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
373 | if (!msg) | |
374 | return -ENOMEM; | |
375 | ||
376 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
377 | NFC_EVENT_LLC_SDRES); | |
378 | if (!hdr) | |
379 | goto free_msg; | |
380 | ||
381 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
382 | goto nla_put_failure; | |
383 | ||
384 | sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP); | |
385 | if (sdp_attr == NULL) { | |
386 | rc = -ENOMEM; | |
387 | goto nla_put_failure; | |
388 | } | |
389 | ||
390 | i = 1; | |
391 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
392 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
393 | ||
394 | uri_attr = nla_nest_start(msg, i++); | |
395 | if (uri_attr == NULL) { | |
396 | rc = -ENOMEM; | |
397 | goto nla_put_failure; | |
398 | } | |
399 | ||
400 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
401 | goto nla_put_failure; | |
402 | ||
403 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
404 | goto nla_put_failure; | |
405 | ||
406 | nla_nest_end(msg, uri_attr); | |
407 | ||
408 | hlist_del(&sdres->node); | |
409 | ||
410 | nfc_llcp_free_sdp_tlv(sdres); | |
411 | } | |
412 | ||
413 | nla_nest_end(msg, sdp_attr); | |
414 | ||
415 | genlmsg_end(msg, hdr); | |
416 | ||
2a94fe48 | 417 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
d9b8d8e1 TE |
418 | |
419 | nla_put_failure: | |
420 | genlmsg_cancel(msg, hdr); | |
421 | ||
422 | free_msg: | |
423 | nlmsg_free(msg); | |
424 | ||
425 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
426 | ||
427 | return rc; | |
428 | } | |
429 | ||
2757c372 SO |
430 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
431 | { | |
432 | struct sk_buff *msg; | |
433 | void *hdr; | |
434 | ||
435 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
436 | if (!msg) | |
437 | return -ENOMEM; | |
438 | ||
439 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
440 | NFC_EVENT_SE_ADDED); | |
441 | if (!hdr) | |
442 | goto free_msg; | |
443 | ||
444 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
445 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
446 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
447 | goto nla_put_failure; | |
448 | ||
449 | genlmsg_end(msg, hdr); | |
450 | ||
2a94fe48 | 451 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
452 | |
453 | return 0; | |
454 | ||
455 | nla_put_failure: | |
456 | genlmsg_cancel(msg, hdr); | |
457 | free_msg: | |
458 | nlmsg_free(msg); | |
459 | return -EMSGSIZE; | |
460 | } | |
461 | ||
462 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
463 | { | |
464 | struct sk_buff *msg; | |
465 | void *hdr; | |
466 | ||
467 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
468 | if (!msg) | |
469 | return -ENOMEM; | |
470 | ||
471 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
472 | NFC_EVENT_SE_REMOVED); | |
473 | if (!hdr) | |
474 | goto free_msg; | |
475 | ||
476 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
477 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
478 | goto nla_put_failure; | |
479 | ||
480 | genlmsg_end(msg, hdr); | |
481 | ||
2a94fe48 | 482 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
483 | |
484 | return 0; | |
485 | ||
486 | nla_put_failure: | |
487 | genlmsg_cancel(msg, hdr); | |
488 | free_msg: | |
489 | nlmsg_free(msg); | |
490 | return -EMSGSIZE; | |
491 | } | |
492 | ||
4d12b8b1 | 493 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 494 | u32 portid, u32 seq, |
0a40acb2 SO |
495 | struct netlink_callback *cb, |
496 | int flags) | |
4d12b8b1 LRV |
497 | { |
498 | void *hdr; | |
499 | ||
15e47304 | 500 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 501 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
502 | if (!hdr) |
503 | return -EMSGSIZE; | |
504 | ||
505 | if (cb) | |
506 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
507 | ||
1e6428d8 DM |
508 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
509 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
510 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
7ad39395 TE |
511 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || |
512 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
1e6428d8 | 513 | goto nla_put_failure; |
4d12b8b1 LRV |
514 | |
515 | return genlmsg_end(msg, hdr); | |
516 | ||
517 | nla_put_failure: | |
518 | genlmsg_cancel(msg, hdr); | |
519 | return -EMSGSIZE; | |
520 | } | |
521 | ||
522 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 523 | struct netlink_callback *cb) |
4d12b8b1 LRV |
524 | { |
525 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
526 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
527 | bool first_call = false; | |
528 | ||
4d12b8b1 LRV |
529 | if (!iter) { |
530 | first_call = true; | |
531 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
532 | if (!iter) | |
533 | return -ENOMEM; | |
534 | cb->args[0] = (long) iter; | |
535 | } | |
536 | ||
537 | mutex_lock(&nfc_devlist_mutex); | |
538 | ||
539 | cb->seq = nfc_devlist_generation; | |
540 | ||
541 | if (first_call) { | |
542 | nfc_device_iter_init(iter); | |
543 | dev = nfc_device_iter_next(iter); | |
544 | } | |
545 | ||
546 | while (dev) { | |
547 | int rc; | |
548 | ||
15e47304 | 549 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 550 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
551 | if (rc < 0) |
552 | break; | |
553 | ||
554 | dev = nfc_device_iter_next(iter); | |
555 | } | |
556 | ||
557 | mutex_unlock(&nfc_devlist_mutex); | |
558 | ||
559 | cb->args[1] = (long) dev; | |
560 | ||
561 | return skb->len; | |
562 | } | |
563 | ||
564 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
565 | { | |
566 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
567 | ||
4d12b8b1 LRV |
568 | nfc_device_iter_exit(iter); |
569 | kfree(iter); | |
570 | ||
571 | return 0; | |
572 | } | |
573 | ||
1ed28f61 | 574 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 575 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
576 | { |
577 | struct sk_buff *msg; | |
578 | void *hdr; | |
579 | ||
580 | pr_debug("DEP link is up\n"); | |
581 | ||
58050fce | 582 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
583 | if (!msg) |
584 | return -ENOMEM; | |
585 | ||
0a40acb2 | 586 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
587 | if (!hdr) |
588 | goto free_msg; | |
589 | ||
1e6428d8 DM |
590 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
591 | goto nla_put_failure; | |
592 | if (rf_mode == NFC_RF_INITIATOR && | |
593 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
594 | goto nla_put_failure; | |
595 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
596 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
597 | goto nla_put_failure; | |
1ed28f61 SO |
598 | |
599 | genlmsg_end(msg, hdr); | |
600 | ||
601 | dev->dep_link_up = true; | |
602 | ||
2a94fe48 | 603 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
604 | |
605 | return 0; | |
606 | ||
607 | nla_put_failure: | |
608 | genlmsg_cancel(msg, hdr); | |
609 | free_msg: | |
610 | nlmsg_free(msg); | |
611 | return -EMSGSIZE; | |
612 | } | |
613 | ||
614 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
615 | { | |
616 | struct sk_buff *msg; | |
617 | void *hdr; | |
618 | ||
619 | pr_debug("DEP link is down\n"); | |
620 | ||
58050fce | 621 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
622 | if (!msg) |
623 | return -ENOMEM; | |
624 | ||
625 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 626 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
627 | if (!hdr) |
628 | goto free_msg; | |
629 | ||
1e6428d8 DM |
630 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
631 | goto nla_put_failure; | |
1ed28f61 SO |
632 | |
633 | genlmsg_end(msg, hdr); | |
634 | ||
2a94fe48 | 635 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
636 | |
637 | return 0; | |
638 | ||
639 | nla_put_failure: | |
640 | genlmsg_cancel(msg, hdr); | |
641 | free_msg: | |
642 | nlmsg_free(msg); | |
643 | return -EMSGSIZE; | |
644 | } | |
645 | ||
4d12b8b1 LRV |
646 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
647 | { | |
648 | struct sk_buff *msg; | |
649 | struct nfc_dev *dev; | |
650 | u32 idx; | |
651 | int rc = -ENOBUFS; | |
652 | ||
4d12b8b1 LRV |
653 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
654 | return -EINVAL; | |
655 | ||
656 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
657 | ||
658 | dev = nfc_get_device(idx); | |
659 | if (!dev) | |
660 | return -ENODEV; | |
661 | ||
58050fce | 662 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
663 | if (!msg) { |
664 | rc = -ENOMEM; | |
665 | goto out_putdev; | |
666 | } | |
667 | ||
15e47304 | 668 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 669 | NULL, 0); |
4d12b8b1 LRV |
670 | if (rc < 0) |
671 | goto out_free; | |
672 | ||
673 | nfc_put_device(dev); | |
674 | ||
675 | return genlmsg_reply(msg, info); | |
676 | ||
677 | out_free: | |
678 | nlmsg_free(msg); | |
679 | out_putdev: | |
680 | nfc_put_device(dev); | |
681 | return rc; | |
682 | } | |
683 | ||
8b3fe7b5 IE |
684 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
685 | { | |
686 | struct nfc_dev *dev; | |
687 | int rc; | |
688 | u32 idx; | |
689 | ||
8b3fe7b5 IE |
690 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
691 | return -EINVAL; | |
692 | ||
693 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
694 | ||
695 | dev = nfc_get_device(idx); | |
696 | if (!dev) | |
697 | return -ENODEV; | |
698 | ||
699 | rc = nfc_dev_up(dev); | |
700 | ||
701 | nfc_put_device(dev); | |
702 | return rc; | |
703 | } | |
704 | ||
705 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
706 | { | |
707 | struct nfc_dev *dev; | |
708 | int rc; | |
709 | u32 idx; | |
710 | ||
8b3fe7b5 IE |
711 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
712 | return -EINVAL; | |
713 | ||
714 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
715 | ||
716 | dev = nfc_get_device(idx); | |
717 | if (!dev) | |
718 | return -ENODEV; | |
719 | ||
720 | rc = nfc_dev_down(dev); | |
721 | ||
722 | nfc_put_device(dev); | |
723 | return rc; | |
724 | } | |
725 | ||
4d12b8b1 LRV |
726 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
727 | { | |
728 | struct nfc_dev *dev; | |
729 | int rc; | |
730 | u32 idx; | |
fe7c5800 | 731 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 732 | |
1ed28f61 SO |
733 | pr_debug("Poll start\n"); |
734 | ||
4d12b8b1 | 735 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
736 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
737 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 738 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
739 | return -EINVAL; |
740 | ||
741 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
742 | |
743 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
744 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
745 | |
746 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
747 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
748 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
749 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
750 | |
751 | dev = nfc_get_device(idx); | |
752 | if (!dev) | |
753 | return -ENODEV; | |
754 | ||
755 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
756 | ||
fe7c5800 | 757 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 758 | if (!rc) |
15e47304 | 759 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
760 | |
761 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
762 | ||
763 | nfc_put_device(dev); | |
764 | return rc; | |
765 | } | |
766 | ||
767 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
768 | { | |
769 | struct nfc_dev *dev; | |
770 | int rc; | |
771 | u32 idx; | |
772 | ||
4d12b8b1 LRV |
773 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
774 | return -EINVAL; | |
775 | ||
776 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
777 | ||
778 | dev = nfc_get_device(idx); | |
779 | if (!dev) | |
780 | return -ENODEV; | |
781 | ||
a831b913 SO |
782 | device_lock(&dev->dev); |
783 | ||
784 | if (!dev->polling) { | |
785 | device_unlock(&dev->dev); | |
786 | return -EINVAL; | |
787 | } | |
788 | ||
789 | device_unlock(&dev->dev); | |
790 | ||
4d12b8b1 LRV |
791 | mutex_lock(&dev->genl_data.genl_data_mutex); |
792 | ||
15e47304 | 793 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
794 | rc = -EBUSY; |
795 | goto out; | |
796 | } | |
797 | ||
798 | rc = nfc_stop_poll(dev); | |
15e47304 | 799 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
800 | |
801 | out: | |
802 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
803 | nfc_put_device(dev); | |
804 | return rc; | |
805 | } | |
806 | ||
1ed28f61 SO |
807 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
808 | { | |
809 | struct nfc_dev *dev; | |
810 | int rc, tgt_idx; | |
811 | u32 idx; | |
47807d3d | 812 | u8 comm; |
1ed28f61 SO |
813 | |
814 | pr_debug("DEP link up\n"); | |
815 | ||
816 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 817 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
818 | return -EINVAL; |
819 | ||
820 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
821 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
822 | tgt_idx = NFC_TARGET_IDX_ANY; | |
823 | else | |
824 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
825 | ||
826 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
827 | |
828 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
829 | return -EINVAL; | |
830 | ||
1ed28f61 SO |
831 | dev = nfc_get_device(idx); |
832 | if (!dev) | |
833 | return -ENODEV; | |
834 | ||
47807d3d | 835 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
836 | |
837 | nfc_put_device(dev); | |
838 | ||
839 | return rc; | |
840 | } | |
841 | ||
842 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
843 | { | |
844 | struct nfc_dev *dev; | |
845 | int rc; | |
846 | u32 idx; | |
847 | ||
848 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
849 | return -EINVAL; | |
850 | ||
851 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
852 | ||
853 | dev = nfc_get_device(idx); | |
854 | if (!dev) | |
855 | return -ENODEV; | |
856 | ||
857 | rc = nfc_dep_link_down(dev); | |
858 | ||
859 | nfc_put_device(dev); | |
860 | return rc; | |
861 | } | |
862 | ||
52feb444 TE |
863 | static int nfc_genl_send_params(struct sk_buff *msg, |
864 | struct nfc_llcp_local *local, | |
865 | u32 portid, u32 seq) | |
866 | { | |
867 | void *hdr; | |
868 | ||
869 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
870 | NFC_CMD_LLC_GET_PARAMS); | |
871 | if (!hdr) | |
872 | return -EMSGSIZE; | |
873 | ||
874 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
875 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
876 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
877 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
878 | goto nla_put_failure; | |
879 | ||
880 | return genlmsg_end(msg, hdr); | |
881 | ||
882 | nla_put_failure: | |
883 | ||
884 | genlmsg_cancel(msg, hdr); | |
885 | return -EMSGSIZE; | |
886 | } | |
887 | ||
888 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
889 | { | |
890 | struct nfc_dev *dev; | |
891 | struct nfc_llcp_local *local; | |
892 | int rc = 0; | |
893 | struct sk_buff *msg = NULL; | |
894 | u32 idx; | |
895 | ||
896 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
897 | return -EINVAL; | |
898 | ||
899 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
900 | ||
901 | dev = nfc_get_device(idx); | |
902 | if (!dev) | |
903 | return -ENODEV; | |
904 | ||
905 | device_lock(&dev->dev); | |
906 | ||
907 | local = nfc_llcp_find_local(dev); | |
908 | if (!local) { | |
909 | rc = -ENODEV; | |
910 | goto exit; | |
911 | } | |
912 | ||
913 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
914 | if (!msg) { | |
915 | rc = -ENOMEM; | |
916 | goto exit; | |
917 | } | |
918 | ||
919 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
920 | ||
921 | exit: | |
922 | device_unlock(&dev->dev); | |
923 | ||
924 | nfc_put_device(dev); | |
925 | ||
926 | if (rc < 0) { | |
927 | if (msg) | |
928 | nlmsg_free(msg); | |
929 | ||
930 | return rc; | |
931 | } | |
932 | ||
933 | return genlmsg_reply(msg, info); | |
934 | } | |
935 | ||
936 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
937 | { | |
938 | struct nfc_dev *dev; | |
939 | struct nfc_llcp_local *local; | |
940 | u8 rw = 0; | |
941 | u16 miux = 0; | |
942 | u32 idx; | |
943 | int rc = 0; | |
944 | ||
945 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
946 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
947 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
948 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
949 | return -EINVAL; | |
950 | ||
951 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
952 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
953 | ||
954 | if (rw > LLCP_MAX_RW) | |
955 | return -EINVAL; | |
956 | } | |
957 | ||
958 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
959 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
960 | ||
961 | if (miux > LLCP_MAX_MIUX) | |
962 | return -EINVAL; | |
963 | } | |
964 | ||
965 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
966 | ||
967 | dev = nfc_get_device(idx); | |
968 | if (!dev) | |
969 | return -ENODEV; | |
970 | ||
971 | device_lock(&dev->dev); | |
972 | ||
973 | local = nfc_llcp_find_local(dev); | |
974 | if (!local) { | |
975 | nfc_put_device(dev); | |
976 | rc = -ENODEV; | |
977 | goto exit; | |
978 | } | |
979 | ||
980 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
981 | if (dev->dep_link_up) { | |
982 | rc = -EINPROGRESS; | |
983 | goto exit; | |
984 | } | |
985 | ||
986 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
987 | } | |
988 | ||
989 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
990 | local->rw = rw; | |
991 | ||
992 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
993 | local->miux = cpu_to_be16(miux); | |
994 | ||
995 | exit: | |
996 | device_unlock(&dev->dev); | |
997 | ||
998 | nfc_put_device(dev); | |
999 | ||
1000 | return rc; | |
1001 | } | |
1002 | ||
d9b8d8e1 TE |
1003 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1004 | { | |
1005 | struct nfc_dev *dev; | |
1006 | struct nfc_llcp_local *local; | |
1007 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1008 | u32 idx; | |
1009 | u8 tid; | |
1010 | char *uri; | |
1011 | int rc = 0, rem; | |
1012 | size_t uri_len, tlvs_len; | |
1013 | struct hlist_head sdreq_list; | |
1014 | struct nfc_llcp_sdp_tlv *sdreq; | |
1015 | ||
1016 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1017 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1018 | return -EINVAL; | |
1019 | ||
1020 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1021 | ||
1022 | dev = nfc_get_device(idx); | |
1023 | if (!dev) { | |
1024 | rc = -ENODEV; | |
1025 | goto exit; | |
1026 | } | |
1027 | ||
1028 | device_lock(&dev->dev); | |
1029 | ||
1030 | if (dev->dep_link_up == false) { | |
1031 | rc = -ENOLINK; | |
1032 | goto exit; | |
1033 | } | |
1034 | ||
1035 | local = nfc_llcp_find_local(dev); | |
1036 | if (!local) { | |
1037 | nfc_put_device(dev); | |
1038 | rc = -ENODEV; | |
1039 | goto exit; | |
1040 | } | |
1041 | ||
1042 | INIT_HLIST_HEAD(&sdreq_list); | |
1043 | ||
1044 | tlvs_len = 0; | |
1045 | ||
1046 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
1047 | rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr, | |
1048 | nfc_sdp_genl_policy); | |
1049 | ||
1050 | if (rc != 0) { | |
1051 | rc = -EINVAL; | |
1052 | goto exit; | |
1053 | } | |
1054 | ||
1055 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1056 | continue; | |
1057 | ||
1058 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1059 | if (uri_len == 0) | |
1060 | continue; | |
1061 | ||
1062 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1063 | if (uri == NULL || *uri == 0) | |
1064 | continue; | |
1065 | ||
1066 | tid = local->sdreq_next_tid++; | |
1067 | ||
1068 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1069 | if (sdreq == NULL) { | |
1070 | rc = -ENOMEM; | |
1071 | goto exit; | |
1072 | } | |
1073 | ||
1074 | tlvs_len += sdreq->tlv_len; | |
1075 | ||
1076 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1077 | } | |
1078 | ||
1079 | if (hlist_empty(&sdreq_list)) { | |
1080 | rc = -EINVAL; | |
1081 | goto exit; | |
1082 | } | |
1083 | ||
1084 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1085 | exit: | |
1086 | device_unlock(&dev->dev); | |
1087 | ||
1088 | nfc_put_device(dev); | |
1089 | ||
1090 | return rc; | |
1091 | } | |
1092 | ||
9ea7187c | 1093 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1094 | { |
1095 | struct nfc_dev *dev; | |
1096 | int rc; | |
1097 | u32 idx; | |
1098 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1099 | ||
1100 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1101 | return -EINVAL; | |
1102 | ||
1103 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1104 | ||
1105 | dev = nfc_get_device(idx); | |
1106 | if (!dev) | |
1107 | return -ENODEV; | |
1108 | ||
1109 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1110 | sizeof(firmware_name)); | |
1111 | ||
9ea7187c | 1112 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1113 | |
1114 | nfc_put_device(dev); | |
1115 | return rc; | |
1116 | } | |
1117 | ||
352a5f5f EL |
1118 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1119 | u32 result) | |
9674da87 EL |
1120 | { |
1121 | struct sk_buff *msg; | |
1122 | void *hdr; | |
1123 | ||
1124 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1125 | if (!msg) | |
1126 | return -ENOMEM; | |
1127 | ||
1128 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1129 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1130 | if (!hdr) |
1131 | goto free_msg; | |
1132 | ||
1133 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1134 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1135 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1136 | goto nla_put_failure; | |
1137 | ||
1138 | genlmsg_end(msg, hdr); | |
1139 | ||
2a94fe48 | 1140 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da87 EL |
1141 | |
1142 | return 0; | |
1143 | ||
1144 | nla_put_failure: | |
1145 | genlmsg_cancel(msg, hdr); | |
1146 | free_msg: | |
1147 | nlmsg_free(msg); | |
1148 | return -EMSGSIZE; | |
1149 | } | |
1150 | ||
be085653 SO |
1151 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1152 | { | |
1153 | struct nfc_dev *dev; | |
1154 | int rc; | |
1155 | u32 idx, se_idx; | |
1156 | ||
1157 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1158 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1159 | return -EINVAL; | |
1160 | ||
1161 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1162 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1163 | ||
1164 | dev = nfc_get_device(idx); | |
1165 | if (!dev) | |
1166 | return -ENODEV; | |
1167 | ||
1168 | rc = nfc_enable_se(dev, se_idx); | |
1169 | ||
1170 | nfc_put_device(dev); | |
1171 | return rc; | |
1172 | } | |
1173 | ||
1174 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1175 | { | |
1176 | struct nfc_dev *dev; | |
1177 | int rc; | |
1178 | u32 idx, se_idx; | |
1179 | ||
1180 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1181 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1182 | return -EINVAL; | |
1183 | ||
1184 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1185 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1186 | ||
1187 | dev = nfc_get_device(idx); | |
1188 | if (!dev) | |
1189 | return -ENODEV; | |
1190 | ||
1191 | rc = nfc_disable_se(dev, se_idx); | |
1192 | ||
1193 | nfc_put_device(dev); | |
1194 | return rc; | |
1195 | } | |
1196 | ||
ac22ac46 SO |
1197 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1198 | u32 portid, u32 seq, | |
1199 | struct netlink_callback *cb, | |
1200 | int flags) | |
1201 | { | |
1202 | void *hdr; | |
1203 | struct nfc_se *se, *n; | |
1204 | ||
1205 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1206 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1207 | NFC_CMD_GET_SE); | |
1208 | if (!hdr) | |
1209 | goto nla_put_failure; | |
1210 | ||
1211 | if (cb) | |
1212 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
1213 | ||
1214 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1215 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1216 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1217 | goto nla_put_failure; | |
1218 | ||
1219 | if (genlmsg_end(msg, hdr) < 0) | |
1220 | goto nla_put_failure; | |
1221 | } | |
1222 | ||
1223 | return 0; | |
1224 | ||
1225 | nla_put_failure: | |
1226 | genlmsg_cancel(msg, hdr); | |
1227 | return -EMSGSIZE; | |
1228 | } | |
1229 | ||
1230 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1231 | struct netlink_callback *cb) | |
1232 | { | |
1233 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1234 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1235 | bool first_call = false; | |
1236 | ||
1237 | if (!iter) { | |
1238 | first_call = true; | |
1239 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1240 | if (!iter) | |
1241 | return -ENOMEM; | |
1242 | cb->args[0] = (long) iter; | |
1243 | } | |
1244 | ||
1245 | mutex_lock(&nfc_devlist_mutex); | |
1246 | ||
1247 | cb->seq = nfc_devlist_generation; | |
1248 | ||
1249 | if (first_call) { | |
1250 | nfc_device_iter_init(iter); | |
1251 | dev = nfc_device_iter_next(iter); | |
1252 | } | |
1253 | ||
1254 | while (dev) { | |
1255 | int rc; | |
1256 | ||
1257 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1258 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1259 | if (rc < 0) | |
1260 | break; | |
1261 | ||
1262 | dev = nfc_device_iter_next(iter); | |
1263 | } | |
1264 | ||
1265 | mutex_unlock(&nfc_devlist_mutex); | |
1266 | ||
1267 | cb->args[1] = (long) dev; | |
1268 | ||
1269 | return skb->len; | |
1270 | } | |
1271 | ||
1272 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1273 | { | |
1274 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1275 | ||
1276 | nfc_device_iter_exit(iter); | |
1277 | kfree(iter); | |
1278 | ||
1279 | return 0; | |
1280 | } | |
1281 | ||
5ce3f32b SO |
1282 | struct se_io_ctx { |
1283 | u32 dev_idx; | |
1284 | u32 se_idx; | |
1285 | }; | |
1286 | ||
ddc1a70b | 1287 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1288 | { |
1289 | struct se_io_ctx *ctx = context; | |
1290 | struct sk_buff *msg; | |
1291 | void *hdr; | |
1292 | ||
1293 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1294 | if (!msg) { | |
1295 | kfree(ctx); | |
1296 | return; | |
1297 | } | |
1298 | ||
1299 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1300 | NFC_CMD_SE_IO); | |
1301 | if (!hdr) | |
1302 | goto free_msg; | |
1303 | ||
1304 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1305 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1306 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1307 | goto nla_put_failure; | |
1308 | ||
1309 | genlmsg_end(msg, hdr); | |
1310 | ||
2a94fe48 | 1311 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1312 | |
1313 | kfree(ctx); | |
1314 | ||
1315 | return; | |
1316 | ||
1317 | nla_put_failure: | |
1318 | genlmsg_cancel(msg, hdr); | |
1319 | free_msg: | |
1320 | nlmsg_free(msg); | |
1321 | kfree(ctx); | |
1322 | ||
1323 | return; | |
1324 | } | |
1325 | ||
1326 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1327 | { | |
1328 | struct nfc_dev *dev; | |
1329 | struct se_io_ctx *ctx; | |
1330 | u32 dev_idx, se_idx; | |
1331 | u8 *apdu; | |
1332 | size_t apdu_len; | |
1333 | ||
1334 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1335 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1336 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1337 | return -EINVAL; | |
1338 | ||
1339 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1340 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1341 | ||
1342 | dev = nfc_get_device(dev_idx); | |
1343 | if (!dev) | |
1344 | return -ENODEV; | |
1345 | ||
1346 | if (!dev->ops || !dev->ops->se_io) | |
1347 | return -ENOTSUPP; | |
1348 | ||
1349 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
1350 | if (apdu_len == 0) | |
1351 | return -EINVAL; | |
1352 | ||
1353 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
1354 | if (!apdu) | |
1355 | return -EINVAL; | |
1356 | ||
1357 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
1358 | if (!ctx) | |
1359 | return -ENOMEM; | |
1360 | ||
1361 | ctx->dev_idx = dev_idx; | |
1362 | ctx->se_idx = se_idx; | |
1363 | ||
1364 | return dev->ops->se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); | |
1365 | } | |
1366 | ||
4534de83 | 1367 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1368 | { |
1369 | .cmd = NFC_CMD_GET_DEVICE, | |
1370 | .doit = nfc_genl_get_device, | |
1371 | .dumpit = nfc_genl_dump_devices, | |
1372 | .done = nfc_genl_dump_devices_done, | |
1373 | .policy = nfc_genl_policy, | |
8b3fe7b5 IE |
1374 | }, |
1375 | { | |
1376 | .cmd = NFC_CMD_DEV_UP, | |
1377 | .doit = nfc_genl_dev_up, | |
1378 | .policy = nfc_genl_policy, | |
1379 | }, | |
1380 | { | |
1381 | .cmd = NFC_CMD_DEV_DOWN, | |
1382 | .doit = nfc_genl_dev_down, | |
1383 | .policy = nfc_genl_policy, | |
4d12b8b1 LRV |
1384 | }, |
1385 | { | |
1386 | .cmd = NFC_CMD_START_POLL, | |
1387 | .doit = nfc_genl_start_poll, | |
1388 | .policy = nfc_genl_policy, | |
1389 | }, | |
1390 | { | |
1391 | .cmd = NFC_CMD_STOP_POLL, | |
1392 | .doit = nfc_genl_stop_poll, | |
1393 | .policy = nfc_genl_policy, | |
1394 | }, | |
1ed28f61 SO |
1395 | { |
1396 | .cmd = NFC_CMD_DEP_LINK_UP, | |
1397 | .doit = nfc_genl_dep_link_up, | |
1398 | .policy = nfc_genl_policy, | |
1399 | }, | |
1400 | { | |
1401 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
1402 | .doit = nfc_genl_dep_link_down, | |
1403 | .policy = nfc_genl_policy, | |
1404 | }, | |
4d12b8b1 LRV |
1405 | { |
1406 | .cmd = NFC_CMD_GET_TARGET, | |
1407 | .dumpit = nfc_genl_dump_targets, | |
1408 | .done = nfc_genl_dump_targets_done, | |
1409 | .policy = nfc_genl_policy, | |
1410 | }, | |
52feb444 TE |
1411 | { |
1412 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
1413 | .doit = nfc_genl_llc_get_params, | |
1414 | .policy = nfc_genl_policy, | |
1415 | }, | |
1416 | { | |
1417 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
1418 | .doit = nfc_genl_llc_set_params, | |
1419 | .policy = nfc_genl_policy, | |
1420 | }, | |
d9b8d8e1 TE |
1421 | { |
1422 | .cmd = NFC_CMD_LLC_SDREQ, | |
1423 | .doit = nfc_genl_llc_sdreq, | |
1424 | .policy = nfc_genl_policy, | |
1425 | }, | |
9674da87 | 1426 | { |
9ea7187c SO |
1427 | .cmd = NFC_CMD_FW_DOWNLOAD, |
1428 | .doit = nfc_genl_fw_download, | |
9674da87 EL |
1429 | .policy = nfc_genl_policy, |
1430 | }, | |
be085653 SO |
1431 | { |
1432 | .cmd = NFC_CMD_ENABLE_SE, | |
1433 | .doit = nfc_genl_enable_se, | |
1434 | .policy = nfc_genl_policy, | |
1435 | }, | |
1436 | { | |
1437 | .cmd = NFC_CMD_DISABLE_SE, | |
1438 | .doit = nfc_genl_disable_se, | |
1439 | .policy = nfc_genl_policy, | |
1440 | }, | |
ac22ac46 SO |
1441 | { |
1442 | .cmd = NFC_CMD_GET_SE, | |
1443 | .dumpit = nfc_genl_dump_ses, | |
1444 | .done = nfc_genl_dump_ses_done, | |
1445 | .policy = nfc_genl_policy, | |
1446 | }, | |
5ce3f32b SO |
1447 | { |
1448 | .cmd = NFC_CMD_SE_IO, | |
1449 | .doit = nfc_genl_se_io, | |
1450 | .policy = nfc_genl_policy, | |
1451 | }, | |
4d12b8b1 LRV |
1452 | }; |
1453 | ||
3c0cc8aa SJ |
1454 | |
1455 | struct urelease_work { | |
1456 | struct work_struct w; | |
c487606f | 1457 | int portid; |
3c0cc8aa SJ |
1458 | }; |
1459 | ||
1460 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1461 | { |
3c0cc8aa | 1462 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1463 | struct class_dev_iter iter; |
1464 | struct nfc_dev *dev; | |
1465 | ||
c487606f | 1466 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1467 | |
3c0cc8aa | 1468 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1469 | |
1470 | nfc_device_iter_init(&iter); | |
1471 | dev = nfc_device_iter_next(&iter); | |
1472 | ||
1473 | while (dev) { | |
3c0cc8aa SJ |
1474 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1475 | ||
c487606f | 1476 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1477 | nfc_stop_poll(dev); |
15e47304 | 1478 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1479 | } |
3c0cc8aa SJ |
1480 | |
1481 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1482 | ||
4d12b8b1 LRV |
1483 | dev = nfc_device_iter_next(&iter); |
1484 | } | |
1485 | ||
1486 | nfc_device_iter_exit(&iter); | |
1487 | ||
3c0cc8aa SJ |
1488 | mutex_unlock(&nfc_devlist_mutex); |
1489 | ||
1490 | kfree(w); | |
1491 | } | |
1492 | ||
1493 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1494 | unsigned long event, void *ptr) | |
1495 | { | |
1496 | struct netlink_notify *n = ptr; | |
1497 | struct urelease_work *w; | |
1498 | ||
1499 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1500 | goto out; | |
1501 | ||
c487606f | 1502 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1503 | |
1504 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1505 | if (w) { | |
1506 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1507 | w->portid = n->portid; |
3c0cc8aa SJ |
1508 | schedule_work((struct work_struct *) w); |
1509 | } | |
1510 | ||
4d12b8b1 LRV |
1511 | out: |
1512 | return NOTIFY_DONE; | |
1513 | } | |
1514 | ||
1515 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1516 | { | |
15e47304 | 1517 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1518 | mutex_init(&genl_data->genl_data_mutex); |
1519 | } | |
1520 | ||
1521 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1522 | { | |
1523 | mutex_destroy(&genl_data->genl_data_mutex); | |
1524 | } | |
1525 | ||
1526 | static struct notifier_block nl_notifier = { | |
1527 | .notifier_call = nfc_genl_rcv_nl_event, | |
1528 | }; | |
1529 | ||
1530 | /** | |
1531 | * nfc_genl_init() - Initialize netlink interface | |
1532 | * | |
1533 | * This initialization function registers the nfc netlink family. | |
1534 | */ | |
1535 | int __init nfc_genl_init(void) | |
1536 | { | |
1537 | int rc; | |
1538 | ||
2a94fe48 JB |
1539 | rc = genl_register_family_with_ops_groups(&nfc_genl_family, |
1540 | nfc_genl_ops, | |
1541 | nfc_genl_mcgrps); | |
4d12b8b1 LRV |
1542 | if (rc) |
1543 | return rc; | |
1544 | ||
4d12b8b1 LRV |
1545 | netlink_register_notifier(&nl_notifier); |
1546 | ||
2a94fe48 | 1547 | return 0; |
4d12b8b1 LRV |
1548 | } |
1549 | ||
1550 | /** | |
1551 | * nfc_genl_exit() - Deinitialize netlink interface | |
1552 | * | |
1553 | * This exit function unregisters the nfc netlink family. | |
1554 | */ | |
1555 | void nfc_genl_exit(void) | |
1556 | { | |
1557 | netlink_unregister_notifier(&nl_notifier); | |
1558 | genl_unregister_family(&nfc_genl_family); | |
1559 | } |