Commit | Line | Data |
---|---|---|
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 | * | |
9e58095f SO |
8 | * Vendor commands implementation based on net/wireless/nl80211.c |
9 | * which is: | |
10 | * | |
11 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> | |
12 | * Copyright 2013-2014 Intel Mobile Communications GmbH | |
13 | * | |
4d12b8b1 LRV |
14 | * This program is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
98b32dec | 25 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
4d12b8b1 LRV |
26 | */ |
27 | ||
52858b51 | 28 | #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__ |
20c239c1 | 29 | |
4d12b8b1 LRV |
30 | #include <net/genetlink.h> |
31 | #include <linux/nfc.h> | |
32 | #include <linux/slab.h> | |
33 | ||
34 | #include "nfc.h" | |
30cc4587 | 35 | #include "llcp.h" |
52feb444 | 36 | |
2a94fe48 JB |
37 | static const struct genl_multicast_group nfc_genl_mcgrps[] = { |
38 | { .name = NFC_GENL_MCAST_EVENT_NAME, }, | |
4d12b8b1 LRV |
39 | }; |
40 | ||
e5fe4cf8 | 41 | static struct genl_family nfc_genl_family = { |
4d12b8b1 LRV |
42 | .id = GENL_ID_GENERATE, |
43 | .hdrsize = 0, | |
44 | .name = NFC_GENL_NAME, | |
45 | .version = NFC_GENL_VERSION, | |
46 | .maxattr = NFC_ATTR_MAX, | |
47 | }; | |
48 | ||
49 | static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = { | |
50 | [NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 }, | |
51 | [NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING, | |
52 | .len = NFC_DEVICE_NAME_MAXSIZE }, | |
53 | [NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 }, | |
1ed28f61 SO |
54 | [NFC_ATTR_COMM_MODE] = { .type = NLA_U8 }, |
55 | [NFC_ATTR_RF_MODE] = { .type = NLA_U8 }, | |
c970a1ac | 56 | [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 }, |
fe7c5800 SO |
57 | [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 }, |
58 | [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 }, | |
8af362d1 TE |
59 | [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 }, |
60 | [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 }, | |
61 | [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 }, | |
d9b8d8e1 | 62 | [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED }, |
9674da87 EL |
63 | [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING, |
64 | .len = NFC_FIRMWARE_NAME_MAXSIZE }, | |
5ce3f32b | 65 | [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY }, |
d9b8d8e1 TE |
66 | }; |
67 | ||
68 | static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = { | |
69 | [NFC_SDP_ATTR_URI] = { .type = NLA_STRING }, | |
70 | [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 }, | |
4d12b8b1 LRV |
71 | }; |
72 | ||
73 | static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target, | |
0a40acb2 | 74 | struct netlink_callback *cb, int flags) |
4d12b8b1 LRV |
75 | { |
76 | void *hdr; | |
77 | ||
15e47304 | 78 | hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
0a40acb2 | 79 | &nfc_genl_family, flags, NFC_CMD_GET_TARGET); |
4d12b8b1 LRV |
80 | if (!hdr) |
81 | return -EMSGSIZE; | |
82 | ||
83 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
84 | ||
1e6428d8 DM |
85 | if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) || |
86 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) || | |
87 | nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) || | |
88 | nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res)) | |
89 | goto nla_put_failure; | |
90 | if (target->nfcid1_len > 0 && | |
91 | nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len, | |
92 | target->nfcid1)) | |
93 | goto nla_put_failure; | |
94 | if (target->sensb_res_len > 0 && | |
95 | nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len, | |
96 | target->sensb_res)) | |
97 | goto nla_put_failure; | |
98 | if (target->sensf_res_len > 0 && | |
99 | nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len, | |
100 | target->sensf_res)) | |
101 | goto nla_put_failure; | |
4d12b8b1 | 102 | |
f5f6872e MG |
103 | if (target->is_iso15693) { |
104 | if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID, | |
105 | target->iso15693_dsfid) || | |
106 | nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID, | |
107 | sizeof(target->iso15693_uid), target->iso15693_uid)) | |
108 | goto nla_put_failure; | |
109 | } | |
110 | ||
053c095a JB |
111 | genlmsg_end(msg, hdr); |
112 | return 0; | |
4d12b8b1 LRV |
113 | |
114 | nla_put_failure: | |
115 | genlmsg_cancel(msg, hdr); | |
116 | return -EMSGSIZE; | |
117 | } | |
118 | ||
119 | static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) | |
120 | { | |
121 | struct nfc_dev *dev; | |
122 | int rc; | |
123 | u32 idx; | |
124 | ||
125 | rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize, | |
0a40acb2 SO |
126 | nfc_genl_family.attrbuf, |
127 | nfc_genl_family.maxattr, | |
128 | nfc_genl_policy); | |
4d12b8b1 LRV |
129 | if (rc < 0) |
130 | return ERR_PTR(rc); | |
131 | ||
132 | if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]) | |
133 | return ERR_PTR(-EINVAL); | |
134 | ||
135 | idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]); | |
136 | ||
137 | dev = nfc_get_device(idx); | |
138 | if (!dev) | |
139 | return ERR_PTR(-ENODEV); | |
140 | ||
141 | return dev; | |
142 | } | |
143 | ||
144 | static int nfc_genl_dump_targets(struct sk_buff *skb, | |
0a40acb2 | 145 | struct netlink_callback *cb) |
4d12b8b1 LRV |
146 | { |
147 | int i = cb->args[0]; | |
148 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
149 | int rc; | |
150 | ||
4d12b8b1 LRV |
151 | if (!dev) { |
152 | dev = __get_device_from_cb(cb); | |
153 | if (IS_ERR(dev)) | |
154 | return PTR_ERR(dev); | |
155 | ||
156 | cb->args[1] = (long) dev; | |
157 | } | |
158 | ||
d4ccb132 | 159 | device_lock(&dev->dev); |
4d12b8b1 LRV |
160 | |
161 | cb->seq = dev->targets_generation; | |
162 | ||
163 | while (i < dev->n_targets) { | |
164 | rc = nfc_genl_send_target(skb, &dev->targets[i], cb, | |
0a40acb2 | 165 | NLM_F_MULTI); |
4d12b8b1 LRV |
166 | if (rc < 0) |
167 | break; | |
168 | ||
169 | i++; | |
170 | } | |
171 | ||
d4ccb132 | 172 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
173 | |
174 | cb->args[0] = i; | |
175 | ||
176 | return skb->len; | |
177 | } | |
178 | ||
179 | static int nfc_genl_dump_targets_done(struct netlink_callback *cb) | |
180 | { | |
181 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
182 | ||
4d12b8b1 LRV |
183 | if (dev) |
184 | nfc_put_device(dev); | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | int nfc_genl_targets_found(struct nfc_dev *dev) | |
190 | { | |
191 | struct sk_buff *msg; | |
192 | void *hdr; | |
193 | ||
15e47304 | 194 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 195 | |
58050fce | 196 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
4d12b8b1 LRV |
197 | if (!msg) |
198 | return -ENOMEM; | |
199 | ||
200 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 201 | NFC_EVENT_TARGETS_FOUND); |
4d12b8b1 LRV |
202 | if (!hdr) |
203 | goto free_msg; | |
204 | ||
1e6428d8 DM |
205 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
206 | goto nla_put_failure; | |
4d12b8b1 LRV |
207 | |
208 | genlmsg_end(msg, hdr); | |
209 | ||
2a94fe48 | 210 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
4d12b8b1 LRV |
211 | |
212 | nla_put_failure: | |
213 | genlmsg_cancel(msg, hdr); | |
214 | free_msg: | |
215 | nlmsg_free(msg); | |
216 | return -EMSGSIZE; | |
217 | } | |
218 | ||
8112a5c9 SO |
219 | int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) |
220 | { | |
221 | struct sk_buff *msg; | |
222 | void *hdr; | |
223 | ||
58050fce | 224 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
8112a5c9 SO |
225 | if (!msg) |
226 | return -ENOMEM; | |
227 | ||
228 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
229 | NFC_EVENT_TARGET_LOST); | |
230 | if (!hdr) | |
231 | goto free_msg; | |
232 | ||
59ef43e6 JL |
233 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
234 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
235 | goto nla_put_failure; | |
8112a5c9 SO |
236 | |
237 | genlmsg_end(msg, hdr); | |
238 | ||
2a94fe48 | 239 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
8112a5c9 SO |
240 | |
241 | return 0; | |
242 | ||
fc40a8c1 SO |
243 | nla_put_failure: |
244 | genlmsg_cancel(msg, hdr); | |
245 | free_msg: | |
246 | nlmsg_free(msg); | |
247 | return -EMSGSIZE; | |
248 | } | |
249 | ||
250 | int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) | |
251 | { | |
252 | struct sk_buff *msg; | |
253 | void *hdr; | |
254 | ||
58050fce | 255 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
256 | if (!msg) |
257 | return -ENOMEM; | |
258 | ||
259 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
260 | NFC_EVENT_TM_ACTIVATED); | |
261 | if (!hdr) | |
262 | goto free_msg; | |
263 | ||
264 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
265 | goto nla_put_failure; | |
266 | if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) | |
267 | goto nla_put_failure; | |
268 | ||
269 | genlmsg_end(msg, hdr); | |
270 | ||
2a94fe48 | 271 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
272 | |
273 | return 0; | |
274 | ||
275 | nla_put_failure: | |
276 | genlmsg_cancel(msg, hdr); | |
277 | free_msg: | |
278 | nlmsg_free(msg); | |
279 | return -EMSGSIZE; | |
280 | } | |
281 | ||
282 | int nfc_genl_tm_deactivated(struct nfc_dev *dev) | |
283 | { | |
284 | struct sk_buff *msg; | |
285 | void *hdr; | |
286 | ||
58050fce | 287 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
288 | if (!msg) |
289 | return -ENOMEM; | |
290 | ||
291 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
292 | NFC_EVENT_TM_DEACTIVATED); | |
293 | if (!hdr) | |
294 | goto free_msg; | |
295 | ||
296 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
297 | goto nla_put_failure; | |
298 | ||
299 | genlmsg_end(msg, hdr); | |
300 | ||
2a94fe48 | 301 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
302 | |
303 | return 0; | |
304 | ||
8112a5c9 SO |
305 | nla_put_failure: |
306 | genlmsg_cancel(msg, hdr); | |
307 | free_msg: | |
308 | nlmsg_free(msg); | |
309 | return -EMSGSIZE; | |
310 | } | |
311 | ||
4d12b8b1 LRV |
312 | int nfc_genl_device_added(struct nfc_dev *dev) |
313 | { | |
314 | struct sk_buff *msg; | |
315 | void *hdr; | |
316 | ||
58050fce | 317 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
318 | if (!msg) |
319 | return -ENOMEM; | |
320 | ||
321 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 322 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
323 | if (!hdr) |
324 | goto free_msg; | |
325 | ||
1e6428d8 DM |
326 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
327 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
328 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
329 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up)) | |
330 | goto nla_put_failure; | |
4d12b8b1 LRV |
331 | |
332 | genlmsg_end(msg, hdr); | |
333 | ||
2a94fe48 | 334 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
335 | |
336 | return 0; | |
337 | ||
338 | nla_put_failure: | |
339 | genlmsg_cancel(msg, hdr); | |
340 | free_msg: | |
341 | nlmsg_free(msg); | |
342 | return -EMSGSIZE; | |
343 | } | |
344 | ||
345 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
346 | { | |
347 | struct sk_buff *msg; | |
348 | void *hdr; | |
349 | ||
58050fce | 350 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
351 | if (!msg) |
352 | return -ENOMEM; | |
353 | ||
354 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 355 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
356 | if (!hdr) |
357 | goto free_msg; | |
358 | ||
1e6428d8 DM |
359 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
360 | goto nla_put_failure; | |
4d12b8b1 LRV |
361 | |
362 | genlmsg_end(msg, hdr); | |
363 | ||
2a94fe48 | 364 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
365 | |
366 | return 0; | |
367 | ||
368 | nla_put_failure: | |
369 | genlmsg_cancel(msg, hdr); | |
370 | free_msg: | |
371 | nlmsg_free(msg); | |
372 | return -EMSGSIZE; | |
373 | } | |
374 | ||
d9b8d8e1 TE |
375 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
376 | { | |
377 | struct sk_buff *msg; | |
378 | struct nlattr *sdp_attr, *uri_attr; | |
379 | struct nfc_llcp_sdp_tlv *sdres; | |
380 | struct hlist_node *n; | |
381 | void *hdr; | |
382 | int rc = -EMSGSIZE; | |
383 | int i; | |
384 | ||
385 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
386 | if (!msg) | |
387 | return -ENOMEM; | |
388 | ||
389 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
390 | NFC_EVENT_LLC_SDRES); | |
391 | if (!hdr) | |
392 | goto free_msg; | |
393 | ||
394 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
395 | goto nla_put_failure; | |
396 | ||
397 | sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP); | |
398 | if (sdp_attr == NULL) { | |
399 | rc = -ENOMEM; | |
400 | goto nla_put_failure; | |
401 | } | |
402 | ||
403 | i = 1; | |
404 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
405 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
406 | ||
407 | uri_attr = nla_nest_start(msg, i++); | |
408 | if (uri_attr == NULL) { | |
409 | rc = -ENOMEM; | |
410 | goto nla_put_failure; | |
411 | } | |
412 | ||
413 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
414 | goto nla_put_failure; | |
415 | ||
416 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
417 | goto nla_put_failure; | |
418 | ||
419 | nla_nest_end(msg, uri_attr); | |
420 | ||
421 | hlist_del(&sdres->node); | |
422 | ||
423 | nfc_llcp_free_sdp_tlv(sdres); | |
424 | } | |
425 | ||
426 | nla_nest_end(msg, sdp_attr); | |
427 | ||
428 | genlmsg_end(msg, hdr); | |
429 | ||
2a94fe48 | 430 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
d9b8d8e1 TE |
431 | |
432 | nla_put_failure: | |
433 | genlmsg_cancel(msg, hdr); | |
434 | ||
435 | free_msg: | |
436 | nlmsg_free(msg); | |
437 | ||
438 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
439 | ||
440 | return rc; | |
441 | } | |
442 | ||
2757c372 SO |
443 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
444 | { | |
445 | struct sk_buff *msg; | |
446 | void *hdr; | |
447 | ||
448 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
449 | if (!msg) | |
450 | return -ENOMEM; | |
451 | ||
452 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
453 | NFC_EVENT_SE_ADDED); | |
454 | if (!hdr) | |
455 | goto free_msg; | |
456 | ||
457 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
458 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
459 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
460 | goto nla_put_failure; | |
461 | ||
462 | genlmsg_end(msg, hdr); | |
463 | ||
2a94fe48 | 464 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
465 | |
466 | return 0; | |
467 | ||
468 | nla_put_failure: | |
469 | genlmsg_cancel(msg, hdr); | |
470 | free_msg: | |
471 | nlmsg_free(msg); | |
472 | return -EMSGSIZE; | |
473 | } | |
474 | ||
475 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
476 | { | |
477 | struct sk_buff *msg; | |
478 | void *hdr; | |
479 | ||
480 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
481 | if (!msg) | |
482 | return -ENOMEM; | |
483 | ||
484 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
485 | NFC_EVENT_SE_REMOVED); | |
486 | if (!hdr) | |
487 | goto free_msg; | |
488 | ||
489 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
490 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
491 | goto nla_put_failure; | |
492 | ||
493 | genlmsg_end(msg, hdr); | |
494 | ||
2a94fe48 | 495 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
496 | |
497 | return 0; | |
498 | ||
499 | nla_put_failure: | |
500 | genlmsg_cancel(msg, hdr); | |
501 | free_msg: | |
502 | nlmsg_free(msg); | |
503 | return -EMSGSIZE; | |
504 | } | |
505 | ||
447b27c4 CR |
506 | int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx, |
507 | struct nfc_evt_transaction *evt_transaction) | |
508 | { | |
509 | struct nfc_se *se; | |
510 | struct sk_buff *msg; | |
511 | void *hdr; | |
512 | ||
513 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
514 | if (!msg) | |
515 | return -ENOMEM; | |
516 | ||
517 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
518 | NFC_EVENT_SE_TRANSACTION); | |
519 | if (!hdr) | |
520 | goto free_msg; | |
521 | ||
522 | se = nfc_find_se(dev, se_idx); | |
523 | if (!se) | |
524 | goto free_msg; | |
525 | ||
526 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
527 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
528 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) || | |
529 | nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len, | |
530 | evt_transaction->aid) || | |
531 | nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len, | |
532 | evt_transaction->params)) | |
533 | goto nla_put_failure; | |
534 | ||
535 | /* evt_transaction is no more used */ | |
536 | devm_kfree(&dev->dev, evt_transaction); | |
537 | ||
538 | genlmsg_end(msg, hdr); | |
539 | ||
540 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
541 | ||
542 | return 0; | |
543 | ||
544 | nla_put_failure: | |
545 | genlmsg_cancel(msg, hdr); | |
546 | free_msg: | |
547 | /* evt_transaction is no more used */ | |
548 | devm_kfree(&dev->dev, evt_transaction); | |
549 | nlmsg_free(msg); | |
550 | return -EMSGSIZE; | |
551 | } | |
552 | ||
4d12b8b1 | 553 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 554 | u32 portid, u32 seq, |
0a40acb2 SO |
555 | struct netlink_callback *cb, |
556 | int flags) | |
4d12b8b1 LRV |
557 | { |
558 | void *hdr; | |
559 | ||
15e47304 | 560 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 561 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
562 | if (!hdr) |
563 | return -EMSGSIZE; | |
564 | ||
565 | if (cb) | |
566 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
567 | ||
1e6428d8 DM |
568 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
569 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
570 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
7ad39395 TE |
571 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || |
572 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
1e6428d8 | 573 | goto nla_put_failure; |
4d12b8b1 | 574 | |
053c095a JB |
575 | genlmsg_end(msg, hdr); |
576 | return 0; | |
4d12b8b1 LRV |
577 | |
578 | nla_put_failure: | |
579 | genlmsg_cancel(msg, hdr); | |
580 | return -EMSGSIZE; | |
581 | } | |
582 | ||
583 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 584 | struct netlink_callback *cb) |
4d12b8b1 LRV |
585 | { |
586 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
587 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
588 | bool first_call = false; | |
589 | ||
4d12b8b1 LRV |
590 | if (!iter) { |
591 | first_call = true; | |
592 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
593 | if (!iter) | |
594 | return -ENOMEM; | |
595 | cb->args[0] = (long) iter; | |
596 | } | |
597 | ||
598 | mutex_lock(&nfc_devlist_mutex); | |
599 | ||
600 | cb->seq = nfc_devlist_generation; | |
601 | ||
602 | if (first_call) { | |
603 | nfc_device_iter_init(iter); | |
604 | dev = nfc_device_iter_next(iter); | |
605 | } | |
606 | ||
607 | while (dev) { | |
608 | int rc; | |
609 | ||
15e47304 | 610 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 611 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
612 | if (rc < 0) |
613 | break; | |
614 | ||
615 | dev = nfc_device_iter_next(iter); | |
616 | } | |
617 | ||
618 | mutex_unlock(&nfc_devlist_mutex); | |
619 | ||
620 | cb->args[1] = (long) dev; | |
621 | ||
622 | return skb->len; | |
623 | } | |
624 | ||
625 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
626 | { | |
627 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
628 | ||
4d12b8b1 LRV |
629 | nfc_device_iter_exit(iter); |
630 | kfree(iter); | |
631 | ||
632 | return 0; | |
633 | } | |
634 | ||
1ed28f61 | 635 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 636 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
637 | { |
638 | struct sk_buff *msg; | |
639 | void *hdr; | |
640 | ||
641 | pr_debug("DEP link is up\n"); | |
642 | ||
58050fce | 643 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
644 | if (!msg) |
645 | return -ENOMEM; | |
646 | ||
0a40acb2 | 647 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
648 | if (!hdr) |
649 | goto free_msg; | |
650 | ||
1e6428d8 DM |
651 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
652 | goto nla_put_failure; | |
653 | if (rf_mode == NFC_RF_INITIATOR && | |
654 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
655 | goto nla_put_failure; | |
656 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
657 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
658 | goto nla_put_failure; | |
1ed28f61 SO |
659 | |
660 | genlmsg_end(msg, hdr); | |
661 | ||
662 | dev->dep_link_up = true; | |
663 | ||
2a94fe48 | 664 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
665 | |
666 | return 0; | |
667 | ||
668 | nla_put_failure: | |
669 | genlmsg_cancel(msg, hdr); | |
670 | free_msg: | |
671 | nlmsg_free(msg); | |
672 | return -EMSGSIZE; | |
673 | } | |
674 | ||
675 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
676 | { | |
677 | struct sk_buff *msg; | |
678 | void *hdr; | |
679 | ||
680 | pr_debug("DEP link is down\n"); | |
681 | ||
58050fce | 682 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
683 | if (!msg) |
684 | return -ENOMEM; | |
685 | ||
686 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 687 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
688 | if (!hdr) |
689 | goto free_msg; | |
690 | ||
1e6428d8 DM |
691 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
692 | goto nla_put_failure; | |
1ed28f61 SO |
693 | |
694 | genlmsg_end(msg, hdr); | |
695 | ||
2a94fe48 | 696 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
697 | |
698 | return 0; | |
699 | ||
700 | nla_put_failure: | |
701 | genlmsg_cancel(msg, hdr); | |
702 | free_msg: | |
703 | nlmsg_free(msg); | |
704 | return -EMSGSIZE; | |
705 | } | |
706 | ||
4d12b8b1 LRV |
707 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
708 | { | |
709 | struct sk_buff *msg; | |
710 | struct nfc_dev *dev; | |
711 | u32 idx; | |
712 | int rc = -ENOBUFS; | |
713 | ||
4d12b8b1 LRV |
714 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
715 | return -EINVAL; | |
716 | ||
717 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
718 | ||
719 | dev = nfc_get_device(idx); | |
720 | if (!dev) | |
721 | return -ENODEV; | |
722 | ||
58050fce | 723 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
724 | if (!msg) { |
725 | rc = -ENOMEM; | |
726 | goto out_putdev; | |
727 | } | |
728 | ||
15e47304 | 729 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 730 | NULL, 0); |
4d12b8b1 LRV |
731 | if (rc < 0) |
732 | goto out_free; | |
733 | ||
734 | nfc_put_device(dev); | |
735 | ||
736 | return genlmsg_reply(msg, info); | |
737 | ||
738 | out_free: | |
739 | nlmsg_free(msg); | |
740 | out_putdev: | |
741 | nfc_put_device(dev); | |
742 | return rc; | |
743 | } | |
744 | ||
8b3fe7b5 IE |
745 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
746 | { | |
747 | struct nfc_dev *dev; | |
748 | int rc; | |
749 | u32 idx; | |
750 | ||
8b3fe7b5 IE |
751 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
752 | return -EINVAL; | |
753 | ||
754 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
755 | ||
756 | dev = nfc_get_device(idx); | |
757 | if (!dev) | |
758 | return -ENODEV; | |
759 | ||
760 | rc = nfc_dev_up(dev); | |
761 | ||
762 | nfc_put_device(dev); | |
763 | return rc; | |
764 | } | |
765 | ||
766 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
767 | { | |
768 | struct nfc_dev *dev; | |
769 | int rc; | |
770 | u32 idx; | |
771 | ||
8b3fe7b5 IE |
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 | ||
781 | rc = nfc_dev_down(dev); | |
782 | ||
783 | nfc_put_device(dev); | |
784 | return rc; | |
785 | } | |
786 | ||
4d12b8b1 LRV |
787 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
788 | { | |
789 | struct nfc_dev *dev; | |
790 | int rc; | |
791 | u32 idx; | |
fe7c5800 | 792 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 793 | |
1ed28f61 SO |
794 | pr_debug("Poll start\n"); |
795 | ||
4d12b8b1 | 796 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
797 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
798 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 799 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
800 | return -EINVAL; |
801 | ||
802 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
803 | |
804 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
805 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
806 | |
807 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
808 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
809 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
810 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
811 | |
812 | dev = nfc_get_device(idx); | |
813 | if (!dev) | |
814 | return -ENODEV; | |
815 | ||
816 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
817 | ||
fe7c5800 | 818 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 819 | if (!rc) |
15e47304 | 820 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
821 | |
822 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
823 | ||
824 | nfc_put_device(dev); | |
825 | return rc; | |
826 | } | |
827 | ||
828 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
829 | { | |
830 | struct nfc_dev *dev; | |
831 | int rc; | |
832 | u32 idx; | |
833 | ||
4d12b8b1 LRV |
834 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
835 | return -EINVAL; | |
836 | ||
837 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
838 | ||
839 | dev = nfc_get_device(idx); | |
840 | if (!dev) | |
841 | return -ENODEV; | |
842 | ||
a831b913 SO |
843 | device_lock(&dev->dev); |
844 | ||
845 | if (!dev->polling) { | |
846 | device_unlock(&dev->dev); | |
847 | return -EINVAL; | |
848 | } | |
849 | ||
850 | device_unlock(&dev->dev); | |
851 | ||
4d12b8b1 LRV |
852 | mutex_lock(&dev->genl_data.genl_data_mutex); |
853 | ||
15e47304 | 854 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
855 | rc = -EBUSY; |
856 | goto out; | |
857 | } | |
858 | ||
859 | rc = nfc_stop_poll(dev); | |
15e47304 | 860 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
861 | |
862 | out: | |
863 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
864 | nfc_put_device(dev); | |
865 | return rc; | |
866 | } | |
867 | ||
3682f49f CR |
868 | static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info) |
869 | { | |
870 | struct nfc_dev *dev; | |
871 | u32 device_idx, target_idx, protocol; | |
872 | int rc; | |
873 | ||
874 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
875 | return -EINVAL; | |
876 | ||
877 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
878 | ||
879 | dev = nfc_get_device(device_idx); | |
880 | if (!dev) | |
881 | return -ENODEV; | |
882 | ||
883 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
884 | protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
885 | ||
886 | nfc_deactivate_target(dev, target_idx); | |
887 | rc = nfc_activate_target(dev, target_idx, protocol); | |
888 | ||
889 | nfc_put_device(dev); | |
890 | return 0; | |
891 | } | |
892 | ||
1ed28f61 SO |
893 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
894 | { | |
895 | struct nfc_dev *dev; | |
896 | int rc, tgt_idx; | |
897 | u32 idx; | |
47807d3d | 898 | u8 comm; |
1ed28f61 SO |
899 | |
900 | pr_debug("DEP link up\n"); | |
901 | ||
902 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 903 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
904 | return -EINVAL; |
905 | ||
906 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
907 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
908 | tgt_idx = NFC_TARGET_IDX_ANY; | |
909 | else | |
910 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
911 | ||
912 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
913 | |
914 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
915 | return -EINVAL; | |
916 | ||
1ed28f61 SO |
917 | dev = nfc_get_device(idx); |
918 | if (!dev) | |
919 | return -ENODEV; | |
920 | ||
47807d3d | 921 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
922 | |
923 | nfc_put_device(dev); | |
924 | ||
925 | return rc; | |
926 | } | |
927 | ||
928 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
929 | { | |
930 | struct nfc_dev *dev; | |
931 | int rc; | |
932 | u32 idx; | |
933 | ||
934 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
935 | return -EINVAL; | |
936 | ||
937 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
938 | ||
939 | dev = nfc_get_device(idx); | |
940 | if (!dev) | |
941 | return -ENODEV; | |
942 | ||
943 | rc = nfc_dep_link_down(dev); | |
944 | ||
945 | nfc_put_device(dev); | |
946 | return rc; | |
947 | } | |
948 | ||
52feb444 TE |
949 | static int nfc_genl_send_params(struct sk_buff *msg, |
950 | struct nfc_llcp_local *local, | |
951 | u32 portid, u32 seq) | |
952 | { | |
953 | void *hdr; | |
954 | ||
955 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
956 | NFC_CMD_LLC_GET_PARAMS); | |
957 | if (!hdr) | |
958 | return -EMSGSIZE; | |
959 | ||
960 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
961 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
962 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
963 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
964 | goto nla_put_failure; | |
965 | ||
053c095a JB |
966 | genlmsg_end(msg, hdr); |
967 | return 0; | |
52feb444 TE |
968 | |
969 | nla_put_failure: | |
970 | ||
971 | genlmsg_cancel(msg, hdr); | |
972 | return -EMSGSIZE; | |
973 | } | |
974 | ||
975 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
976 | { | |
977 | struct nfc_dev *dev; | |
978 | struct nfc_llcp_local *local; | |
979 | int rc = 0; | |
980 | struct sk_buff *msg = NULL; | |
981 | u32 idx; | |
982 | ||
983 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
984 | return -EINVAL; | |
985 | ||
986 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
987 | ||
988 | dev = nfc_get_device(idx); | |
989 | if (!dev) | |
990 | return -ENODEV; | |
991 | ||
992 | device_lock(&dev->dev); | |
993 | ||
994 | local = nfc_llcp_find_local(dev); | |
995 | if (!local) { | |
996 | rc = -ENODEV; | |
997 | goto exit; | |
998 | } | |
999 | ||
1000 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1001 | if (!msg) { | |
1002 | rc = -ENOMEM; | |
1003 | goto exit; | |
1004 | } | |
1005 | ||
1006 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
1007 | ||
1008 | exit: | |
1009 | device_unlock(&dev->dev); | |
1010 | ||
1011 | nfc_put_device(dev); | |
1012 | ||
1013 | if (rc < 0) { | |
1014 | if (msg) | |
1015 | nlmsg_free(msg); | |
1016 | ||
1017 | return rc; | |
1018 | } | |
1019 | ||
1020 | return genlmsg_reply(msg, info); | |
1021 | } | |
1022 | ||
1023 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
1024 | { | |
1025 | struct nfc_dev *dev; | |
1026 | struct nfc_llcp_local *local; | |
1027 | u8 rw = 0; | |
1028 | u16 miux = 0; | |
1029 | u32 idx; | |
1030 | int rc = 0; | |
1031 | ||
1032 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1033 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
1034 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
1035 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
1036 | return -EINVAL; | |
1037 | ||
1038 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
1039 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
1040 | ||
1041 | if (rw > LLCP_MAX_RW) | |
1042 | return -EINVAL; | |
1043 | } | |
1044 | ||
1045 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
1046 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
1047 | ||
1048 | if (miux > LLCP_MAX_MIUX) | |
1049 | return -EINVAL; | |
1050 | } | |
1051 | ||
1052 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1053 | ||
1054 | dev = nfc_get_device(idx); | |
1055 | if (!dev) | |
1056 | return -ENODEV; | |
1057 | ||
1058 | device_lock(&dev->dev); | |
1059 | ||
1060 | local = nfc_llcp_find_local(dev); | |
1061 | if (!local) { | |
1062 | nfc_put_device(dev); | |
1063 | rc = -ENODEV; | |
1064 | goto exit; | |
1065 | } | |
1066 | ||
1067 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
1068 | if (dev->dep_link_up) { | |
1069 | rc = -EINPROGRESS; | |
1070 | goto exit; | |
1071 | } | |
1072 | ||
1073 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
1074 | } | |
1075 | ||
1076 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
1077 | local->rw = rw; | |
1078 | ||
1079 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
1080 | local->miux = cpu_to_be16(miux); | |
1081 | ||
1082 | exit: | |
1083 | device_unlock(&dev->dev); | |
1084 | ||
1085 | nfc_put_device(dev); | |
1086 | ||
1087 | return rc; | |
1088 | } | |
1089 | ||
d9b8d8e1 TE |
1090 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1091 | { | |
1092 | struct nfc_dev *dev; | |
1093 | struct nfc_llcp_local *local; | |
1094 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1095 | u32 idx; | |
1096 | u8 tid; | |
1097 | char *uri; | |
1098 | int rc = 0, rem; | |
1099 | size_t uri_len, tlvs_len; | |
1100 | struct hlist_head sdreq_list; | |
1101 | struct nfc_llcp_sdp_tlv *sdreq; | |
1102 | ||
1103 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1104 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1105 | return -EINVAL; | |
1106 | ||
1107 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1108 | ||
1109 | dev = nfc_get_device(idx); | |
1110 | if (!dev) { | |
1111 | rc = -ENODEV; | |
1112 | goto exit; | |
1113 | } | |
1114 | ||
1115 | device_lock(&dev->dev); | |
1116 | ||
1117 | if (dev->dep_link_up == false) { | |
1118 | rc = -ENOLINK; | |
1119 | goto exit; | |
1120 | } | |
1121 | ||
1122 | local = nfc_llcp_find_local(dev); | |
1123 | if (!local) { | |
1124 | nfc_put_device(dev); | |
1125 | rc = -ENODEV; | |
1126 | goto exit; | |
1127 | } | |
1128 | ||
1129 | INIT_HLIST_HEAD(&sdreq_list); | |
1130 | ||
1131 | tlvs_len = 0; | |
1132 | ||
1133 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
1134 | rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr, | |
1135 | nfc_sdp_genl_policy); | |
1136 | ||
1137 | if (rc != 0) { | |
1138 | rc = -EINVAL; | |
1139 | goto exit; | |
1140 | } | |
1141 | ||
1142 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1143 | continue; | |
1144 | ||
1145 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1146 | if (uri_len == 0) | |
1147 | continue; | |
1148 | ||
1149 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1150 | if (uri == NULL || *uri == 0) | |
1151 | continue; | |
1152 | ||
1153 | tid = local->sdreq_next_tid++; | |
1154 | ||
1155 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1156 | if (sdreq == NULL) { | |
1157 | rc = -ENOMEM; | |
1158 | goto exit; | |
1159 | } | |
1160 | ||
1161 | tlvs_len += sdreq->tlv_len; | |
1162 | ||
1163 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1164 | } | |
1165 | ||
1166 | if (hlist_empty(&sdreq_list)) { | |
1167 | rc = -EINVAL; | |
1168 | goto exit; | |
1169 | } | |
1170 | ||
1171 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1172 | exit: | |
1173 | device_unlock(&dev->dev); | |
1174 | ||
1175 | nfc_put_device(dev); | |
1176 | ||
1177 | return rc; | |
1178 | } | |
1179 | ||
9ea7187c | 1180 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1181 | { |
1182 | struct nfc_dev *dev; | |
1183 | int rc; | |
1184 | u32 idx; | |
1185 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1186 | ||
1187 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1188 | return -EINVAL; | |
1189 | ||
1190 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1191 | ||
1192 | dev = nfc_get_device(idx); | |
1193 | if (!dev) | |
1194 | return -ENODEV; | |
1195 | ||
1196 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1197 | sizeof(firmware_name)); | |
1198 | ||
9ea7187c | 1199 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1200 | |
1201 | nfc_put_device(dev); | |
1202 | return rc; | |
1203 | } | |
1204 | ||
352a5f5f EL |
1205 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1206 | u32 result) | |
9674da87 EL |
1207 | { |
1208 | struct sk_buff *msg; | |
1209 | void *hdr; | |
1210 | ||
1211 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1212 | if (!msg) | |
1213 | return -ENOMEM; | |
1214 | ||
1215 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1216 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1217 | if (!hdr) |
1218 | goto free_msg; | |
1219 | ||
1220 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1221 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1222 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1223 | goto nla_put_failure; | |
1224 | ||
1225 | genlmsg_end(msg, hdr); | |
1226 | ||
2a94fe48 | 1227 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da87 EL |
1228 | |
1229 | return 0; | |
1230 | ||
1231 | nla_put_failure: | |
1232 | genlmsg_cancel(msg, hdr); | |
1233 | free_msg: | |
1234 | nlmsg_free(msg); | |
1235 | return -EMSGSIZE; | |
1236 | } | |
1237 | ||
be085653 SO |
1238 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1239 | { | |
1240 | struct nfc_dev *dev; | |
1241 | int rc; | |
1242 | u32 idx, se_idx; | |
1243 | ||
1244 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1245 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1246 | return -EINVAL; | |
1247 | ||
1248 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1249 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1250 | ||
1251 | dev = nfc_get_device(idx); | |
1252 | if (!dev) | |
1253 | return -ENODEV; | |
1254 | ||
1255 | rc = nfc_enable_se(dev, se_idx); | |
1256 | ||
1257 | nfc_put_device(dev); | |
1258 | return rc; | |
1259 | } | |
1260 | ||
1261 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1262 | { | |
1263 | struct nfc_dev *dev; | |
1264 | int rc; | |
1265 | u32 idx, se_idx; | |
1266 | ||
1267 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1268 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1269 | return -EINVAL; | |
1270 | ||
1271 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1272 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1273 | ||
1274 | dev = nfc_get_device(idx); | |
1275 | if (!dev) | |
1276 | return -ENODEV; | |
1277 | ||
1278 | rc = nfc_disable_se(dev, se_idx); | |
1279 | ||
1280 | nfc_put_device(dev); | |
1281 | return rc; | |
1282 | } | |
1283 | ||
ac22ac46 SO |
1284 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1285 | u32 portid, u32 seq, | |
1286 | struct netlink_callback *cb, | |
1287 | int flags) | |
1288 | { | |
1289 | void *hdr; | |
1290 | struct nfc_se *se, *n; | |
1291 | ||
1292 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1293 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1294 | NFC_CMD_GET_SE); | |
1295 | if (!hdr) | |
1296 | goto nla_put_failure; | |
1297 | ||
1298 | if (cb) | |
1299 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
1300 | ||
1301 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1302 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1303 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1304 | goto nla_put_failure; | |
1305 | ||
053c095a | 1306 | genlmsg_end(msg, hdr); |
ac22ac46 SO |
1307 | } |
1308 | ||
1309 | return 0; | |
1310 | ||
1311 | nla_put_failure: | |
1312 | genlmsg_cancel(msg, hdr); | |
1313 | return -EMSGSIZE; | |
1314 | } | |
1315 | ||
1316 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1317 | struct netlink_callback *cb) | |
1318 | { | |
1319 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1320 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1321 | bool first_call = false; | |
1322 | ||
1323 | if (!iter) { | |
1324 | first_call = true; | |
1325 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1326 | if (!iter) | |
1327 | return -ENOMEM; | |
1328 | cb->args[0] = (long) iter; | |
1329 | } | |
1330 | ||
1331 | mutex_lock(&nfc_devlist_mutex); | |
1332 | ||
1333 | cb->seq = nfc_devlist_generation; | |
1334 | ||
1335 | if (first_call) { | |
1336 | nfc_device_iter_init(iter); | |
1337 | dev = nfc_device_iter_next(iter); | |
1338 | } | |
1339 | ||
1340 | while (dev) { | |
1341 | int rc; | |
1342 | ||
1343 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1344 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1345 | if (rc < 0) | |
1346 | break; | |
1347 | ||
1348 | dev = nfc_device_iter_next(iter); | |
1349 | } | |
1350 | ||
1351 | mutex_unlock(&nfc_devlist_mutex); | |
1352 | ||
1353 | cb->args[1] = (long) dev; | |
1354 | ||
1355 | return skb->len; | |
1356 | } | |
1357 | ||
1358 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1359 | { | |
1360 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1361 | ||
1362 | nfc_device_iter_exit(iter); | |
1363 | kfree(iter); | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
cd96db6f CR |
1368 | static int nfc_se_io(struct nfc_dev *dev, u32 se_idx, |
1369 | u8 *apdu, size_t apdu_length, | |
1370 | se_io_cb_t cb, void *cb_context) | |
1371 | { | |
1372 | struct nfc_se *se; | |
1373 | int rc; | |
1374 | ||
1375 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
1376 | ||
1377 | device_lock(&dev->dev); | |
1378 | ||
1379 | if (!device_is_registered(&dev->dev)) { | |
1380 | rc = -ENODEV; | |
1381 | goto error; | |
1382 | } | |
1383 | ||
1384 | if (!dev->dev_up) { | |
1385 | rc = -ENODEV; | |
1386 | goto error; | |
1387 | } | |
1388 | ||
1389 | if (!dev->ops->se_io) { | |
1390 | rc = -EOPNOTSUPP; | |
1391 | goto error; | |
1392 | } | |
1393 | ||
1394 | se = nfc_find_se(dev, se_idx); | |
1395 | if (!se) { | |
1396 | rc = -EINVAL; | |
1397 | goto error; | |
1398 | } | |
1399 | ||
1400 | if (se->state != NFC_SE_ENABLED) { | |
1401 | rc = -ENODEV; | |
1402 | goto error; | |
1403 | } | |
1404 | ||
1405 | rc = dev->ops->se_io(dev, se_idx, apdu, | |
1406 | apdu_length, cb, cb_context); | |
1407 | ||
1408 | error: | |
1409 | device_unlock(&dev->dev); | |
1410 | return rc; | |
1411 | } | |
1412 | ||
5ce3f32b SO |
1413 | struct se_io_ctx { |
1414 | u32 dev_idx; | |
1415 | u32 se_idx; | |
1416 | }; | |
1417 | ||
ddc1a70b | 1418 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1419 | { |
1420 | struct se_io_ctx *ctx = context; | |
1421 | struct sk_buff *msg; | |
1422 | void *hdr; | |
1423 | ||
1424 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1425 | if (!msg) { | |
1426 | kfree(ctx); | |
1427 | return; | |
1428 | } | |
1429 | ||
1430 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1431 | NFC_CMD_SE_IO); | |
1432 | if (!hdr) | |
1433 | goto free_msg; | |
1434 | ||
1435 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1436 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1437 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1438 | goto nla_put_failure; | |
1439 | ||
1440 | genlmsg_end(msg, hdr); | |
1441 | ||
2a94fe48 | 1442 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1443 | |
1444 | kfree(ctx); | |
1445 | ||
1446 | return; | |
1447 | ||
1448 | nla_put_failure: | |
1449 | genlmsg_cancel(msg, hdr); | |
1450 | free_msg: | |
1451 | nlmsg_free(msg); | |
1452 | kfree(ctx); | |
1453 | ||
1454 | return; | |
1455 | } | |
1456 | ||
1457 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1458 | { | |
1459 | struct nfc_dev *dev; | |
1460 | struct se_io_ctx *ctx; | |
1461 | u32 dev_idx, se_idx; | |
1462 | u8 *apdu; | |
1463 | size_t apdu_len; | |
1464 | ||
1465 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1466 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1467 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1468 | return -EINVAL; | |
1469 | ||
1470 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1471 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1472 | ||
1473 | dev = nfc_get_device(dev_idx); | |
1474 | if (!dev) | |
1475 | return -ENODEV; | |
1476 | ||
1477 | if (!dev->ops || !dev->ops->se_io) | |
1478 | return -ENOTSUPP; | |
1479 | ||
1480 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
1481 | if (apdu_len == 0) | |
1482 | return -EINVAL; | |
1483 | ||
1484 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
1485 | if (!apdu) | |
1486 | return -EINVAL; | |
1487 | ||
1488 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
1489 | if (!ctx) | |
1490 | return -ENOMEM; | |
1491 | ||
1492 | ctx->dev_idx = dev_idx; | |
1493 | ctx->se_idx = se_idx; | |
1494 | ||
cd96db6f | 1495 | return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); |
5ce3f32b SO |
1496 | } |
1497 | ||
9e58095f SO |
1498 | static int nfc_genl_vendor_cmd(struct sk_buff *skb, |
1499 | struct genl_info *info) | |
1500 | { | |
1501 | struct nfc_dev *dev; | |
1502 | struct nfc_vendor_cmd *cmd; | |
1503 | u32 dev_idx, vid, subcmd; | |
1504 | u8 *data; | |
1505 | size_t data_len; | |
1506 | int i; | |
1507 | ||
1508 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1509 | !info->attrs[NFC_ATTR_VENDOR_ID] || | |
1510 | !info->attrs[NFC_ATTR_VENDOR_SUBCMD]) | |
1511 | return -EINVAL; | |
1512 | ||
1513 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1514 | vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]); | |
1515 | subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]); | |
1516 | ||
1517 | dev = nfc_get_device(dev_idx); | |
1518 | if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds) | |
1519 | return -ENODEV; | |
1520 | ||
1521 | data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]); | |
1522 | if (data) { | |
1523 | data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]); | |
1524 | if (data_len == 0) | |
1525 | return -EINVAL; | |
1526 | } else { | |
1527 | data_len = 0; | |
1528 | } | |
1529 | ||
1530 | for (i = 0; i < dev->n_vendor_cmds; i++) { | |
1531 | cmd = &dev->vendor_cmds[i]; | |
1532 | ||
1533 | if (cmd->vendor_id != vid || cmd->subcmd != subcmd) | |
1534 | continue; | |
1535 | ||
1536 | return cmd->doit(dev, data, data_len); | |
1537 | } | |
1538 | ||
1539 | return -EOPNOTSUPP; | |
1540 | } | |
1541 | ||
4534de83 | 1542 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1543 | { |
1544 | .cmd = NFC_CMD_GET_DEVICE, | |
1545 | .doit = nfc_genl_get_device, | |
1546 | .dumpit = nfc_genl_dump_devices, | |
1547 | .done = nfc_genl_dump_devices_done, | |
1548 | .policy = nfc_genl_policy, | |
8b3fe7b5 IE |
1549 | }, |
1550 | { | |
1551 | .cmd = NFC_CMD_DEV_UP, | |
1552 | .doit = nfc_genl_dev_up, | |
1553 | .policy = nfc_genl_policy, | |
1554 | }, | |
1555 | { | |
1556 | .cmd = NFC_CMD_DEV_DOWN, | |
1557 | .doit = nfc_genl_dev_down, | |
1558 | .policy = nfc_genl_policy, | |
4d12b8b1 LRV |
1559 | }, |
1560 | { | |
1561 | .cmd = NFC_CMD_START_POLL, | |
1562 | .doit = nfc_genl_start_poll, | |
1563 | .policy = nfc_genl_policy, | |
1564 | }, | |
1565 | { | |
1566 | .cmd = NFC_CMD_STOP_POLL, | |
1567 | .doit = nfc_genl_stop_poll, | |
1568 | .policy = nfc_genl_policy, | |
1569 | }, | |
1ed28f61 SO |
1570 | { |
1571 | .cmd = NFC_CMD_DEP_LINK_UP, | |
1572 | .doit = nfc_genl_dep_link_up, | |
1573 | .policy = nfc_genl_policy, | |
1574 | }, | |
1575 | { | |
1576 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
1577 | .doit = nfc_genl_dep_link_down, | |
1578 | .policy = nfc_genl_policy, | |
1579 | }, | |
4d12b8b1 LRV |
1580 | { |
1581 | .cmd = NFC_CMD_GET_TARGET, | |
1582 | .dumpit = nfc_genl_dump_targets, | |
1583 | .done = nfc_genl_dump_targets_done, | |
1584 | .policy = nfc_genl_policy, | |
1585 | }, | |
52feb444 TE |
1586 | { |
1587 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
1588 | .doit = nfc_genl_llc_get_params, | |
1589 | .policy = nfc_genl_policy, | |
1590 | }, | |
1591 | { | |
1592 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
1593 | .doit = nfc_genl_llc_set_params, | |
1594 | .policy = nfc_genl_policy, | |
1595 | }, | |
d9b8d8e1 TE |
1596 | { |
1597 | .cmd = NFC_CMD_LLC_SDREQ, | |
1598 | .doit = nfc_genl_llc_sdreq, | |
1599 | .policy = nfc_genl_policy, | |
1600 | }, | |
9674da87 | 1601 | { |
9ea7187c SO |
1602 | .cmd = NFC_CMD_FW_DOWNLOAD, |
1603 | .doit = nfc_genl_fw_download, | |
9674da87 EL |
1604 | .policy = nfc_genl_policy, |
1605 | }, | |
be085653 SO |
1606 | { |
1607 | .cmd = NFC_CMD_ENABLE_SE, | |
1608 | .doit = nfc_genl_enable_se, | |
1609 | .policy = nfc_genl_policy, | |
1610 | }, | |
1611 | { | |
1612 | .cmd = NFC_CMD_DISABLE_SE, | |
1613 | .doit = nfc_genl_disable_se, | |
1614 | .policy = nfc_genl_policy, | |
1615 | }, | |
ac22ac46 SO |
1616 | { |
1617 | .cmd = NFC_CMD_GET_SE, | |
1618 | .dumpit = nfc_genl_dump_ses, | |
1619 | .done = nfc_genl_dump_ses_done, | |
1620 | .policy = nfc_genl_policy, | |
1621 | }, | |
5ce3f32b SO |
1622 | { |
1623 | .cmd = NFC_CMD_SE_IO, | |
1624 | .doit = nfc_genl_se_io, | |
1625 | .policy = nfc_genl_policy, | |
1626 | }, | |
3682f49f CR |
1627 | { |
1628 | .cmd = NFC_CMD_ACTIVATE_TARGET, | |
1629 | .doit = nfc_genl_activate_target, | |
1630 | .policy = nfc_genl_policy, | |
1631 | }, | |
9e58095f SO |
1632 | { |
1633 | .cmd = NFC_CMD_VENDOR, | |
1634 | .doit = nfc_genl_vendor_cmd, | |
1635 | .policy = nfc_genl_policy, | |
1636 | }, | |
4d12b8b1 LRV |
1637 | }; |
1638 | ||
3c0cc8aa SJ |
1639 | |
1640 | struct urelease_work { | |
1641 | struct work_struct w; | |
65bc4f93 | 1642 | u32 portid; |
3c0cc8aa SJ |
1643 | }; |
1644 | ||
1645 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1646 | { |
3c0cc8aa | 1647 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1648 | struct class_dev_iter iter; |
1649 | struct nfc_dev *dev; | |
1650 | ||
c487606f | 1651 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1652 | |
3c0cc8aa | 1653 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1654 | |
1655 | nfc_device_iter_init(&iter); | |
1656 | dev = nfc_device_iter_next(&iter); | |
1657 | ||
1658 | while (dev) { | |
3c0cc8aa SJ |
1659 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1660 | ||
c487606f | 1661 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1662 | nfc_stop_poll(dev); |
15e47304 | 1663 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1664 | } |
3c0cc8aa SJ |
1665 | |
1666 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1667 | ||
4d12b8b1 LRV |
1668 | dev = nfc_device_iter_next(&iter); |
1669 | } | |
1670 | ||
1671 | nfc_device_iter_exit(&iter); | |
1672 | ||
3c0cc8aa SJ |
1673 | mutex_unlock(&nfc_devlist_mutex); |
1674 | ||
1675 | kfree(w); | |
1676 | } | |
1677 | ||
1678 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1679 | unsigned long event, void *ptr) | |
1680 | { | |
1681 | struct netlink_notify *n = ptr; | |
1682 | struct urelease_work *w; | |
1683 | ||
1684 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1685 | goto out; | |
1686 | ||
c487606f | 1687 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1688 | |
1689 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1690 | if (w) { | |
1691 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1692 | w->portid = n->portid; |
3c0cc8aa SJ |
1693 | schedule_work((struct work_struct *) w); |
1694 | } | |
1695 | ||
4d12b8b1 LRV |
1696 | out: |
1697 | return NOTIFY_DONE; | |
1698 | } | |
1699 | ||
1700 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1701 | { | |
15e47304 | 1702 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1703 | mutex_init(&genl_data->genl_data_mutex); |
1704 | } | |
1705 | ||
1706 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1707 | { | |
1708 | mutex_destroy(&genl_data->genl_data_mutex); | |
1709 | } | |
1710 | ||
1711 | static struct notifier_block nl_notifier = { | |
1712 | .notifier_call = nfc_genl_rcv_nl_event, | |
1713 | }; | |
1714 | ||
1715 | /** | |
1716 | * nfc_genl_init() - Initialize netlink interface | |
1717 | * | |
1718 | * This initialization function registers the nfc netlink family. | |
1719 | */ | |
1720 | int __init nfc_genl_init(void) | |
1721 | { | |
1722 | int rc; | |
1723 | ||
2a94fe48 JB |
1724 | rc = genl_register_family_with_ops_groups(&nfc_genl_family, |
1725 | nfc_genl_ops, | |
1726 | nfc_genl_mcgrps); | |
4d12b8b1 LRV |
1727 | if (rc) |
1728 | return rc; | |
1729 | ||
4d12b8b1 LRV |
1730 | netlink_register_notifier(&nl_notifier); |
1731 | ||
2a94fe48 | 1732 | return 0; |
4d12b8b1 LRV |
1733 | } |
1734 | ||
1735 | /** | |
1736 | * nfc_genl_exit() - Deinitialize netlink interface | |
1737 | * | |
1738 | * This exit function unregisters the nfc netlink family. | |
1739 | */ | |
1740 | void nfc_genl_exit(void) | |
1741 | { | |
1742 | netlink_unregister_notifier(&nl_notifier); | |
1743 | genl_unregister_family(&nfc_genl_family); | |
1744 | } |