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mac80211: Free mpath object when rhashtable insertion fails
[mirror_ubuntu-bionic-kernel.git] / net / nfc / netlink.c
CommitLineData
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		 37static const struct genl_multicast_group nfc_genl_mcgrps[] = {
38 { .name = NFC_GENL_MCAST_EVENT_NAME, },
4d12b8b1
LRV		 39};
40
489111e5 41static struct genl_family nfc_genl_family;
4d12b8b1
LRV		 42static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = {
43 [NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 },
44 [NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING,
45 .len = NFC_DEVICE_NAME_MAXSIZE },
46 [NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 },
1ed28f61
SO		 47 [NFC_ATTR_COMM_MODE] = { .type = NLA_U8 },
48 [NFC_ATTR_RF_MODE] = { .type = NLA_U8 },
c970a1ac 49 [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 },
fe7c5800
SO		 50 [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 },
51 [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 },
8af362d1
TE		 52 [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 },
53 [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 },
54 [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 },
d9b8d8e1 55 [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED },
9674da87
EL		 56 [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
57 .len = NFC_FIRMWARE_NAME_MAXSIZE },
5ce3f32b 58 [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY },
29e76924
CR		 59 [NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
60
d9b8d8e1
TE		 61};
62
63static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = {
3767558d
KC		 64 [NFC_SDP_ATTR_URI] = { .type = NLA_STRING,
65 .len = U8_MAX - 4 },
d9b8d8e1 66 [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 },
4d12b8b1
LRV		 67};
68
69static 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
0a833c29 79 genl_dump_check_consistent(cb, hdr);
4d12b8b1 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 98
f5f6872e
MG		 99 if (target->is_iso15693) {
100 if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID,
101 target->iso15693_dsfid) ||
102 nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID,
103 sizeof(target->iso15693_uid), target->iso15693_uid))
104 goto nla_put_failure;
105 }
106
053c095a
JB		 107 genlmsg_end(msg, hdr);
108 return 0;
4d12b8b1
LRV		 109
110nla_put_failure:
111 genlmsg_cancel(msg, hdr);
112 return -EMSGSIZE;
113}
114
115static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb)
116{
c90c39da 117 struct nlattr **attrbuf = genl_family_attrbuf(&nfc_genl_family);
4d12b8b1
LRV		 118 struct nfc_dev *dev;
119 int rc;
120 u32 idx;
121
122 rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize,
fceb6435
JB		 123 attrbuf, nfc_genl_family.maxattr, nfc_genl_policy,
124 NULL);
4d12b8b1
LRV		 125 if (rc < 0)
126 return ERR_PTR(rc);
127
c90c39da 128 if (!attrbuf[NFC_ATTR_DEVICE_INDEX])
4d12b8b1
LRV		 129 return ERR_PTR(-EINVAL);
130
c90c39da 131 idx = nla_get_u32(attrbuf[NFC_ATTR_DEVICE_INDEX]);
4d12b8b1
LRV		 132
133 dev = nfc_get_device(idx);
134 if (!dev)
135 return ERR_PTR(-ENODEV);
136
137 return dev;
138}
139
140static int nfc_genl_dump_targets(struct sk_buff *skb,
0a40acb2 141 struct netlink_callback *cb)
4d12b8b1
LRV		 142{
143 int i = cb->args[0];
144 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
145 int rc;
146
4d12b8b1
LRV		 147 if (!dev) {
148 dev = __get_device_from_cb(cb);
149 if (IS_ERR(dev))
150 return PTR_ERR(dev);
151
152 cb->args[1] = (long) dev;
153 }
154
d4ccb132 155 device_lock(&dev->dev);
4d12b8b1
LRV		 156
157 cb->seq = dev->targets_generation;
158
159 while (i < dev->n_targets) {
160 rc = nfc_genl_send_target(skb, &dev->targets[i], cb,
0a40acb2 161 NLM_F_MULTI);
4d12b8b1
LRV		 162 if (rc < 0)
163 break;
164
165 i++;
166 }
167
d4ccb132 168 device_unlock(&dev->dev);
4d12b8b1
LRV		 169
170 cb->args[0] = i;
171
172 return skb->len;
173}
174
175static int nfc_genl_dump_targets_done(struct netlink_callback *cb)
176{
177 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
178
4d12b8b1
LRV		 179 if (dev)
180 nfc_put_device(dev);
181
182 return 0;
183}
184
185int nfc_genl_targets_found(struct nfc_dev *dev)
186{
187 struct sk_buff *msg;
188 void *hdr;
189
15e47304 190 dev->genl_data.poll_req_portid = 0;
4d12b8b1 191
58050fce 192 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
4d12b8b1
LRV		 193 if (!msg)
194 return -ENOMEM;
195
196 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
0a40acb2 197 NFC_EVENT_TARGETS_FOUND);
4d12b8b1
LRV		 198 if (!hdr)
199 goto free_msg;
200
1e6428d8
DM		 201 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
202 goto nla_put_failure;
4d12b8b1
LRV		 203
204 genlmsg_end(msg, hdr);
205
2a94fe48 206 return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
4d12b8b1
LRV		 207
208nla_put_failure:
209 genlmsg_cancel(msg, hdr);
210free_msg:
211 nlmsg_free(msg);
212 return -EMSGSIZE;
213}
214
8112a5c9
SO		 215int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx)
216{
217 struct sk_buff *msg;
218 void *hdr;
219
58050fce 220 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8112a5c9
SO		 221 if (!msg)
222 return -ENOMEM;
223
224 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
225 NFC_EVENT_TARGET_LOST);
226 if (!hdr)
227 goto free_msg;
228
59ef43e6
JL		 229 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
230 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
231 goto nla_put_failure;
8112a5c9
SO		 232
233 genlmsg_end(msg, hdr);
234
2a94fe48 235 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
8112a5c9
SO		 236
237 return 0;
238
fc40a8c1
SO		 239nla_put_failure:
240 genlmsg_cancel(msg, hdr);
241free_msg:
242 nlmsg_free(msg);
243 return -EMSGSIZE;
244}
245
246int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol)
247{
248 struct sk_buff *msg;
249 void *hdr;
250
58050fce 251 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
fc40a8c1
SO		 252 if (!msg)
253 return -ENOMEM;
254
255 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
256 NFC_EVENT_TM_ACTIVATED);
257 if (!hdr)
258 goto free_msg;
259
260 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
261 goto nla_put_failure;
262 if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol))
263 goto nla_put_failure;
264
265 genlmsg_end(msg, hdr);
266
2a94fe48 267 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
fc40a8c1
SO		 268
269 return 0;
270
271nla_put_failure:
272 genlmsg_cancel(msg, hdr);
273free_msg:
274 nlmsg_free(msg);
275 return -EMSGSIZE;
276}
277
278int nfc_genl_tm_deactivated(struct nfc_dev *dev)
279{
280 struct sk_buff *msg;
281 void *hdr;
282
58050fce 283 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
fc40a8c1
SO		 284 if (!msg)
285 return -ENOMEM;
286
287 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
288 NFC_EVENT_TM_DEACTIVATED);
289 if (!hdr)
290 goto free_msg;
291
292 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
293 goto nla_put_failure;
294
295 genlmsg_end(msg, hdr);
296
2a94fe48 297 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
fc40a8c1
SO		 298
299 return 0;
300
8112a5c9
SO		 301nla_put_failure:
302 genlmsg_cancel(msg, hdr);
303free_msg:
304 nlmsg_free(msg);
305 return -EMSGSIZE;
306}
307
85a2566d
OH		 308static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg)
309{
310 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
311 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
312 nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
313 nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) ||
314 nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
315 return -1;
316 return 0;
317}
318
4d12b8b1
LRV		 319int nfc_genl_device_added(struct nfc_dev *dev)
320{
321 struct sk_buff *msg;
322 void *hdr;
323
58050fce 324 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4d12b8b1
LRV		 325 if (!msg)
326 return -ENOMEM;
327
328 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
0a40acb2 329 NFC_EVENT_DEVICE_ADDED);
4d12b8b1
LRV		 330 if (!hdr)
331 goto free_msg;
332
85a2566d 333 if (nfc_genl_setup_device_added(dev, msg))
1e6428d8 334 goto nla_put_failure;
4d12b8b1
LRV		 335
336 genlmsg_end(msg, hdr);
337
2a94fe48 338 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
4d12b8b1
LRV		 339
340 return 0;
341
342nla_put_failure:
343 genlmsg_cancel(msg, hdr);
344free_msg:
345 nlmsg_free(msg);
346 return -EMSGSIZE;
347}
348
349int nfc_genl_device_removed(struct nfc_dev *dev)
350{
351 struct sk_buff *msg;
352 void *hdr;
353
58050fce 354 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4d12b8b1
LRV		 355 if (!msg)
356 return -ENOMEM;
357
358 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
0a40acb2 359 NFC_EVENT_DEVICE_REMOVED);
4d12b8b1
LRV		 360 if (!hdr)
361 goto free_msg;
362
1e6428d8
DM		 363 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
364 goto nla_put_failure;
4d12b8b1
LRV		 365
366 genlmsg_end(msg, hdr);
367
2a94fe48 368 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
4d12b8b1
LRV		 369
370 return 0;
371
372nla_put_failure:
373 genlmsg_cancel(msg, hdr);
374free_msg:
375 nlmsg_free(msg);
376 return -EMSGSIZE;
377}
378
d9b8d8e1
TE		 379int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
380{
381 struct sk_buff *msg;
382 struct nlattr *sdp_attr, *uri_attr;
383 struct nfc_llcp_sdp_tlv *sdres;
384 struct hlist_node *n;
385 void *hdr;
386 int rc = -EMSGSIZE;
387 int i;
388
389 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
390 if (!msg)
391 return -ENOMEM;
392
393 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
394 NFC_EVENT_LLC_SDRES);
395 if (!hdr)
396 goto free_msg;
397
398 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
399 goto nla_put_failure;
400
401 sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP);
402 if (sdp_attr == NULL) {
403 rc = -ENOMEM;
404 goto nla_put_failure;
405 }
406
407 i = 1;
408 hlist_for_each_entry_safe(sdres, n, sdres_list, node) {
409 pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap);
410
411 uri_attr = nla_nest_start(msg, i++);
412 if (uri_attr == NULL) {
413 rc = -ENOMEM;
414 goto nla_put_failure;
415 }
416
417 if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap))
418 goto nla_put_failure;
419
420 if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri))
421 goto nla_put_failure;
422
423 nla_nest_end(msg, uri_attr);
424
425 hlist_del(&sdres->node);
426
427 nfc_llcp_free_sdp_tlv(sdres);
428 }
429
430 nla_nest_end(msg, sdp_attr);
431
432 genlmsg_end(msg, hdr);
433
2a94fe48 434 return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
d9b8d8e1
TE		 435
436nla_put_failure:
437 genlmsg_cancel(msg, hdr);
438
439free_msg:
440 nlmsg_free(msg);
441
442 nfc_llcp_free_sdp_tlv_list(sdres_list);
443
444 return rc;
445}
446
2757c372
SO		 447int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type)
448{
449 struct sk_buff *msg;
450 void *hdr;
451
452 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
453 if (!msg)
454 return -ENOMEM;
455
456 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
457 NFC_EVENT_SE_ADDED);
458 if (!hdr)
459 goto free_msg;
460
461 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
462 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
463 nla_put_u8(msg, NFC_ATTR_SE_TYPE, type))
464 goto nla_put_failure;
465
466 genlmsg_end(msg, hdr);
467
2a94fe48 468 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
2757c372
SO		 469
470 return 0;
471
472nla_put_failure:
473 genlmsg_cancel(msg, hdr);
474free_msg:
475 nlmsg_free(msg);
476 return -EMSGSIZE;
477}
478
479int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx)
480{
481 struct sk_buff *msg;
482 void *hdr;
483
484 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
485 if (!msg)
486 return -ENOMEM;
487
488 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
489 NFC_EVENT_SE_REMOVED);
490 if (!hdr)
491 goto free_msg;
492
493 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
494 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx))
495 goto nla_put_failure;
496
497 genlmsg_end(msg, hdr);
498
2a94fe48 499 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
2757c372
SO		 500
501 return 0;
502
503nla_put_failure:
504 genlmsg_cancel(msg, hdr);
505free_msg:
506 nlmsg_free(msg);
507 return -EMSGSIZE;
508}
509
447b27c4
CR		 510int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
511 struct nfc_evt_transaction *evt_transaction)
512{
513 struct nfc_se *se;
514 struct sk_buff *msg;
515 void *hdr;
516
517 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
518 if (!msg)
519 return -ENOMEM;
520
521 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
522 NFC_EVENT_SE_TRANSACTION);
523 if (!hdr)
524 goto free_msg;
525
526 se = nfc_find_se(dev, se_idx);
527 if (!se)
528 goto free_msg;
529
530 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
531 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
532 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) ||
533 nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len,
534 evt_transaction->aid) ||
535 nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len,
536 evt_transaction->params))
537 goto nla_put_failure;
538
539 /* evt_transaction is no more used */
540 devm_kfree(&dev->dev, evt_transaction);
541
542 genlmsg_end(msg, hdr);
543
544 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
545
546 return 0;
547
548nla_put_failure:
549 genlmsg_cancel(msg, hdr);
550free_msg:
551 /* evt_transaction is no more used */
552 devm_kfree(&dev->dev, evt_transaction);
553 nlmsg_free(msg);
554 return -EMSGSIZE;
555}
556
9afec6d3
CR		 557int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx)
558{
559 struct nfc_se *se;
560 struct sk_buff *msg;
561 void *hdr;
562
563 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
564 if (!msg)
565 return -ENOMEM;
566
567 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
568 NFC_EVENT_SE_CONNECTIVITY);
569 if (!hdr)
570 goto free_msg;
571
572 se = nfc_find_se(dev, se_idx);
573 if (!se)
574 goto free_msg;
575
576 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
577 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
578 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
579 goto nla_put_failure;
580
581 genlmsg_end(msg, hdr);
582
583 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
584
585 return 0;
586
587nla_put_failure:
588 genlmsg_cancel(msg, hdr);
589free_msg:
590 nlmsg_free(msg);
591 return -EMSGSIZE;
592}
593
4d12b8b1 594static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
15e47304 595 u32 portid, u32 seq,
0a40acb2
SO		 596 struct netlink_callback *cb,
597 int flags)
4d12b8b1
LRV		 598{
599 void *hdr;
600
15e47304 601 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
0a40acb2 602 NFC_CMD_GET_DEVICE);
4d12b8b1
LRV		 603 if (!hdr)
604 return -EMSGSIZE;
605
606 if (cb)
0a833c29 607 genl_dump_check_consistent(cb, hdr);
4d12b8b1 608
85a2566d 609 if (nfc_genl_setup_device_added(dev, msg))
1e6428d8 610 goto nla_put_failure;
4d12b8b1 611
053c095a
JB		 612 genlmsg_end(msg, hdr);
613 return 0;
4d12b8b1
LRV		 614
615nla_put_failure:
616 genlmsg_cancel(msg, hdr);
617 return -EMSGSIZE;
618}
619
620static int nfc_genl_dump_devices(struct sk_buff *skb,
0a40acb2 621 struct netlink_callback *cb)
4d12b8b1
LRV		 622{
623 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
624 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
625 bool first_call = false;
626
4d12b8b1
LRV		 627 if (!iter) {
628 first_call = true;
629 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
630 if (!iter)
631 return -ENOMEM;
632 cb->args[0] = (long) iter;
633 }
634
635 mutex_lock(&nfc_devlist_mutex);
636
637 cb->seq = nfc_devlist_generation;
638
639 if (first_call) {
640 nfc_device_iter_init(iter);
641 dev = nfc_device_iter_next(iter);
642 }
643
644 while (dev) {
645 int rc;
646
15e47304 647 rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid,
0a40acb2 648 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
4d12b8b1
LRV		 649 if (rc < 0)
650 break;
651
652 dev = nfc_device_iter_next(iter);
653 }
654
655 mutex_unlock(&nfc_devlist_mutex);
656
657 cb->args[1] = (long) dev;
658
659 return skb->len;
660}
661
662static int nfc_genl_dump_devices_done(struct netlink_callback *cb)
663{
664 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
665
4d12b8b1
LRV		 666 nfc_device_iter_exit(iter);
667 kfree(iter);
668
669 return 0;
670}
671
1ed28f61 672int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
0a40acb2 673 u8 comm_mode, u8 rf_mode)
1ed28f61
SO		 674{
675 struct sk_buff *msg;
676 void *hdr;
677
678 pr_debug("DEP link is up\n");
679
58050fce 680 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1ed28f61
SO		 681 if (!msg)
682 return -ENOMEM;
683
0a40acb2 684 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP);
1ed28f61
SO		 685 if (!hdr)
686 goto free_msg;
687
1e6428d8
DM		 688 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
689 goto nla_put_failure;
690 if (rf_mode == NFC_RF_INITIATOR &&
691 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
692 goto nla_put_failure;
693 if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) ||
694 nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode))
695 goto nla_put_failure;
1ed28f61
SO		 696
697 genlmsg_end(msg, hdr);
698
699 dev->dep_link_up = true;
700
2a94fe48 701 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
1ed28f61
SO		 702
703 return 0;
704
705nla_put_failure:
706 genlmsg_cancel(msg, hdr);
707free_msg:
708 nlmsg_free(msg);
709 return -EMSGSIZE;
710}
711
712int nfc_genl_dep_link_down_event(struct nfc_dev *dev)
713{
714 struct sk_buff *msg;
715 void *hdr;
716
717 pr_debug("DEP link is down\n");
718
58050fce 719 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1ed28f61
SO		 720 if (!msg)
721 return -ENOMEM;
722
723 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
0a40acb2 724 NFC_CMD_DEP_LINK_DOWN);
1ed28f61
SO		 725 if (!hdr)
726 goto free_msg;
727
1e6428d8
DM		 728 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
729 goto nla_put_failure;
1ed28f61
SO		 730
731 genlmsg_end(msg, hdr);
732
2a94fe48 733 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
1ed28f61
SO		 734
735 return 0;
736
737nla_put_failure:
738 genlmsg_cancel(msg, hdr);
739free_msg:
740 nlmsg_free(msg);
741 return -EMSGSIZE;
742}
743
4d12b8b1
LRV		 744static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info)
745{
746 struct sk_buff *msg;
747 struct nfc_dev *dev;
748 u32 idx;
749 int rc = -ENOBUFS;
750
4d12b8b1
LRV		 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
58050fce 760 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4d12b8b1
LRV		 761 if (!msg) {
762 rc = -ENOMEM;
763 goto out_putdev;
764 }
765
15e47304 766 rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq,
0a40acb2 767 NULL, 0);
4d12b8b1
LRV		 768 if (rc < 0)
769 goto out_free;
770
771 nfc_put_device(dev);
772
773 return genlmsg_reply(msg, info);
774
775out_free:
776 nlmsg_free(msg);
777out_putdev:
778 nfc_put_device(dev);
779 return rc;
780}
781
8b3fe7b5
IE		 782static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info)
783{
784 struct nfc_dev *dev;
785 int rc;
786 u32 idx;
787
8b3fe7b5
IE		 788 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
789 return -EINVAL;
790
791 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
792
793 dev = nfc_get_device(idx);
794 if (!dev)
795 return -ENODEV;
796
797 rc = nfc_dev_up(dev);
798
799 nfc_put_device(dev);
800 return rc;
801}
802
803static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info)
804{
805 struct nfc_dev *dev;
806 int rc;
807 u32 idx;
808
8b3fe7b5
IE		 809 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
810 return -EINVAL;
811
812 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
813
814 dev = nfc_get_device(idx);
815 if (!dev)
816 return -ENODEV;
817
818 rc = nfc_dev_down(dev);
819
820 nfc_put_device(dev);
821 return rc;
822}
823
4d12b8b1
LRV		 824static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
825{
826 struct nfc_dev *dev;
827 int rc;
828 u32 idx;
fe7c5800 829 u32 im_protocols = 0, tm_protocols = 0;
4d12b8b1 830
1ed28f61
SO		 831 pr_debug("Poll start\n");
832
4d12b8b1 833 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
fe7c5800
SO		 834 ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] &&
835 !info->attrs[NFC_ATTR_PROTOCOLS]) &&
0f450772 836 !info->attrs[NFC_ATTR_TM_PROTOCOLS]))
4d12b8b1
LRV		 837 return -EINVAL;
838
839 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
fe7c5800
SO		 840
841 if (info->attrs[NFC_ATTR_TM_PROTOCOLS])
842 tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]);
fe7c5800
SO		 843
844 if (info->attrs[NFC_ATTR_IM_PROTOCOLS])
845 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]);
5e50ee3a
SO		 846 else if (info->attrs[NFC_ATTR_PROTOCOLS])
847 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
4d12b8b1
LRV		 848
849 dev = nfc_get_device(idx);
850 if (!dev)
851 return -ENODEV;
852
853 mutex_lock(&dev->genl_data.genl_data_mutex);
854
fe7c5800 855 rc = nfc_start_poll(dev, im_protocols, tm_protocols);
4d12b8b1 856 if (!rc)
15e47304 857 dev->genl_data.poll_req_portid = info->snd_portid;
4d12b8b1
LRV		 858
859 mutex_unlock(&dev->genl_data.genl_data_mutex);
860
861 nfc_put_device(dev);
862 return rc;
863}
864
865static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
866{
867 struct nfc_dev *dev;
868 int rc;
869 u32 idx;
870
4d12b8b1
LRV		 871 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
872 return -EINVAL;
873
874 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
875
876 dev = nfc_get_device(idx);
877 if (!dev)
878 return -ENODEV;
879
a831b913
SO		 880 device_lock(&dev->dev);
881
882 if (!dev->polling) {
883 device_unlock(&dev->dev);
884 return -EINVAL;
885 }
886
887 device_unlock(&dev->dev);
888
4d12b8b1
LRV		 889 mutex_lock(&dev->genl_data.genl_data_mutex);
890
15e47304 891 if (dev->genl_data.poll_req_portid != info->snd_portid) {
4d12b8b1
LRV		 892 rc = -EBUSY;
893 goto out;
894 }
895
896 rc = nfc_stop_poll(dev);
15e47304 897 dev->genl_data.poll_req_portid = 0;
4d12b8b1
LRV		 898
899out:
900 mutex_unlock(&dev->genl_data.genl_data_mutex);
901 nfc_put_device(dev);
902 return rc;
903}
904
3682f49f
CR		 905static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info)
906{
907 struct nfc_dev *dev;
908 u32 device_idx, target_idx, protocol;
909 int rc;
910
a0323b97
MJ		 911 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
912 !info->attrs[NFC_ATTR_TARGET_INDEX] ||
913 !info->attrs[NFC_ATTR_PROTOCOLS])
3682f49f
CR		 914 return -EINVAL;
915
916 device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
917
918 dev = nfc_get_device(device_idx);
919 if (!dev)
920 return -ENODEV;
921
922 target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
923 protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
924
96d4581f 925 nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
3682f49f
CR		 926 rc = nfc_activate_target(dev, target_idx, protocol);
927
928 nfc_put_device(dev);
3267183c 929 return rc;
3682f49f
CR		 930}
931
4d63adfe
MG		 932static int nfc_genl_deactivate_target(struct sk_buff *skb,
933 struct genl_info *info)
934{
935 struct nfc_dev *dev;
936 u32 device_idx, target_idx;
937 int rc;
938
291b1512
YX		 939 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
940 !info->attrs[NFC_ATTR_TARGET_INDEX])
4d63adfe
MG		 941 return -EINVAL;
942
943 device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
944
945 dev = nfc_get_device(device_idx);
946 if (!dev)
947 return -ENODEV;
948
949 target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
950
951 rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
952
953 nfc_put_device(dev);
954 return rc;
955}
956
1ed28f61
SO		 957static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info)
958{
959 struct nfc_dev *dev;
960 int rc, tgt_idx;
961 u32 idx;
47807d3d 962 u8 comm;
1ed28f61
SO		 963
964 pr_debug("DEP link up\n");
965
966 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
47807d3d 967 !info->attrs[NFC_ATTR_COMM_MODE])
1ed28f61
SO		 968 return -EINVAL;
969
970 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
971 if (!info->attrs[NFC_ATTR_TARGET_INDEX])
972 tgt_idx = NFC_TARGET_IDX_ANY;
973 else
974 tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
975
976 comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]);
1ed28f61
SO		 977
978 if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE)
979 return -EINVAL;
980
1ed28f61
SO		 981 dev = nfc_get_device(idx);
982 if (!dev)
983 return -ENODEV;
984
47807d3d 985 rc = nfc_dep_link_up(dev, tgt_idx, comm);
1ed28f61
SO		 986
987 nfc_put_device(dev);
988
989 return rc;
990}
991
992static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info)
993{
994 struct nfc_dev *dev;
995 int rc;
996 u32 idx;
997
998 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
999 return -EINVAL;
1000
1001 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1002
1003 dev = nfc_get_device(idx);
1004 if (!dev)
1005 return -ENODEV;
1006
1007 rc = nfc_dep_link_down(dev);
1008
1009 nfc_put_device(dev);
1010 return rc;
1011}
1012
52feb444
TE		 1013static int nfc_genl_send_params(struct sk_buff *msg,
1014 struct nfc_llcp_local *local,
1015 u32 portid, u32 seq)
1016{
1017 void *hdr;
1018
1019 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0,
1020 NFC_CMD_LLC_GET_PARAMS);
1021 if (!hdr)
1022 return -EMSGSIZE;
1023
1024 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) ||
1025 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) ||
1026 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) ||
1027 nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux)))
1028 goto nla_put_failure;
1029
053c095a
JB		 1030 genlmsg_end(msg, hdr);
1031 return 0;
52feb444
TE		 1032
1033nla_put_failure:
1034
1035 genlmsg_cancel(msg, hdr);
1036 return -EMSGSIZE;
1037}
1038
1039static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
1040{
1041 struct nfc_dev *dev;
1042 struct nfc_llcp_local *local;
1043 int rc = 0;
1044 struct sk_buff *msg = NULL;
1045 u32 idx;
1046
1047 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
1048 return -EINVAL;
1049
1050 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1051
1052 dev = nfc_get_device(idx);
1053 if (!dev)
1054 return -ENODEV;
1055
1056 device_lock(&dev->dev);
1057
1058 local = nfc_llcp_find_local(dev);
1059 if (!local) {
1060 rc = -ENODEV;
1061 goto exit;
1062 }
1063
1064 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1065 if (!msg) {
1066 rc = -ENOMEM;
1067 goto exit;
1068 }
1069
1070 rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq);
1071
1072exit:
1073 device_unlock(&dev->dev);
1074
1075 nfc_put_device(dev);
1076
1077 if (rc < 0) {
1078 if (msg)
1079 nlmsg_free(msg);
1080
1081 return rc;
1082 }
1083
1084 return genlmsg_reply(msg, info);
1085}
1086
1087static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
1088{
1089 struct nfc_dev *dev;
1090 struct nfc_llcp_local *local;
1091 u8 rw = 0;
1092 u16 miux = 0;
1093 u32 idx;
1094 int rc = 0;
1095
1096 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1097 (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] &&
1098 !info->attrs[NFC_ATTR_LLC_PARAM_RW] &&
1099 !info->attrs[NFC_ATTR_LLC_PARAM_MIUX]))
1100 return -EINVAL;
1101
1102 if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) {
1103 rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]);
1104
1105 if (rw > LLCP_MAX_RW)
1106 return -EINVAL;
1107 }
1108
1109 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) {
1110 miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]);
1111
1112 if (miux > LLCP_MAX_MIUX)
1113 return -EINVAL;
1114 }
1115
1116 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1117
1118 dev = nfc_get_device(idx);
1119 if (!dev)
1120 return -ENODEV;
1121
1122 device_lock(&dev->dev);
1123
1124 local = nfc_llcp_find_local(dev);
1125 if (!local) {
1126 nfc_put_device(dev);
1127 rc = -ENODEV;
1128 goto exit;
1129 }
1130
1131 if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) {
1132 if (dev->dep_link_up) {
1133 rc = -EINPROGRESS;
1134 goto exit;
1135 }
1136
1137 local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]);
1138 }
1139
1140 if (info->attrs[NFC_ATTR_LLC_PARAM_RW])
1141 local->rw = rw;
1142
1143 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX])
1144 local->miux = cpu_to_be16(miux);
1145
1146exit:
1147 device_unlock(&dev->dev);
1148
1149 nfc_put_device(dev);
1150
1151 return rc;
1152}
1153
d9b8d8e1
TE		 1154static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
1155{
1156 struct nfc_dev *dev;
1157 struct nfc_llcp_local *local;
1158 struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1];
1159 u32 idx;
1160 u8 tid;
1161 char *uri;
1162 int rc = 0, rem;
1163 size_t uri_len, tlvs_len;
1164 struct hlist_head sdreq_list;
1165 struct nfc_llcp_sdp_tlv *sdreq;
1166
1167 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1168 !info->attrs[NFC_ATTR_LLC_SDP])
1169 return -EINVAL;
1170
1171 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1172
1173 dev = nfc_get_device(idx);
9abebb8a
JL		 1174 if (!dev)
1175 return -ENODEV;
d9b8d8e1
TE		 1176
1177 device_lock(&dev->dev);
1178
1179 if (dev->dep_link_up == false) {
1180 rc = -ENOLINK;
1181 goto exit;
1182 }
1183
1184 local = nfc_llcp_find_local(dev);
1185 if (!local) {
1186 nfc_put_device(dev);
1187 rc = -ENODEV;
1188 goto exit;
1189 }
1190
1191 INIT_HLIST_HEAD(&sdreq_list);
1192
1193 tlvs_len = 0;
1194
1195 nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) {
1196 rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr,
fe52145f 1197 nfc_sdp_genl_policy, info->extack);
d9b8d8e1
TE		 1198
1199 if (rc != 0) {
1200 rc = -EINVAL;
1201 goto exit;
1202 }
1203
1204 if (!sdp_attrs[NFC_SDP_ATTR_URI])
1205 continue;
1206
1207 uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]);
1208 if (uri_len == 0)
1209 continue;
1210
1211 uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]);
1212 if (uri == NULL || *uri == 0)
1213 continue;
1214
1215 tid = local->sdreq_next_tid++;
1216
1217 sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len);
1218 if (sdreq == NULL) {
1219 rc = -ENOMEM;
1220 goto exit;
1221 }
1222
1223 tlvs_len += sdreq->tlv_len;
1224
1225 hlist_add_head(&sdreq->node, &sdreq_list);
1226 }
1227
1228 if (hlist_empty(&sdreq_list)) {
1229 rc = -EINVAL;
1230 goto exit;
1231 }
1232
1233 rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len);
1234exit:
1235 device_unlock(&dev->dev);
1236
1237 nfc_put_device(dev);
1238
1239 return rc;
1240}
1241
9ea7187c 1242static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info)
9674da87
EL		 1243{
1244 struct nfc_dev *dev;
1245 int rc;
1246 u32 idx;
1247 char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
1248
1249 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
1250 return -EINVAL;
1251
1252 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1253
1254 dev = nfc_get_device(idx);
1255 if (!dev)
1256 return -ENODEV;
1257
1258 nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
1259 sizeof(firmware_name));
1260
9ea7187c 1261 rc = nfc_fw_download(dev, firmware_name);
9674da87
EL		 1262
1263 nfc_put_device(dev);
1264 return rc;
1265}
1266
352a5f5f
EL		 1267int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
1268 u32 result)
9674da87
EL		 1269{
1270 struct sk_buff *msg;
1271 void *hdr;
1272
1273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1274 if (!msg)
1275 return -ENOMEM;
1276
1277 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
9ea7187c 1278 NFC_CMD_FW_DOWNLOAD);
9674da87
EL		 1279 if (!hdr)
1280 goto free_msg;
1281
1282 if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) ||
352a5f5f 1283 nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) ||
9674da87
EL		 1284 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
1285 goto nla_put_failure;
1286
1287 genlmsg_end(msg, hdr);
1288
2a94fe48 1289 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
9674da87
EL		 1290
1291 return 0;
1292
1293nla_put_failure:
1294 genlmsg_cancel(msg, hdr);
1295free_msg:
1296 nlmsg_free(msg);
1297 return -EMSGSIZE;
1298}
1299
be085653
SO		 1300static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info)
1301{
1302 struct nfc_dev *dev;
1303 int rc;
1304 u32 idx, se_idx;
1305
1306 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1307 !info->attrs[NFC_ATTR_SE_INDEX])
1308 return -EINVAL;
1309
1310 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1311 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1312
1313 dev = nfc_get_device(idx);
1314 if (!dev)
1315 return -ENODEV;
1316
1317 rc = nfc_enable_se(dev, se_idx);
1318
1319 nfc_put_device(dev);
1320 return rc;
1321}
1322
1323static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info)
1324{
1325 struct nfc_dev *dev;
1326 int rc;
1327 u32 idx, se_idx;
1328
1329 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1330 !info->attrs[NFC_ATTR_SE_INDEX])
1331 return -EINVAL;
1332
1333 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1334 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1335
1336 dev = nfc_get_device(idx);
1337 if (!dev)
1338 return -ENODEV;
1339
1340 rc = nfc_disable_se(dev, se_idx);
1341
1342 nfc_put_device(dev);
1343 return rc;
1344}
1345
ac22ac46
SO		 1346static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev,
1347 u32 portid, u32 seq,
1348 struct netlink_callback *cb,
1349 int flags)
1350{
1351 void *hdr;
1352 struct nfc_se *se, *n;
1353
1354 list_for_each_entry_safe(se, n, &dev->secure_elements, list) {
1355 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
1356 NFC_CMD_GET_SE);
1357 if (!hdr)
1358 goto nla_put_failure;
1359
1360 if (cb)
0a833c29 1361 genl_dump_check_consistent(cb, hdr);
ac22ac46
SO		 1362
1363 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
1364 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) ||
1365 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
1366 goto nla_put_failure;
1367
053c095a 1368 genlmsg_end(msg, hdr);
ac22ac46
SO		 1369 }
1370
1371 return 0;
1372
1373nla_put_failure:
1374 genlmsg_cancel(msg, hdr);
1375 return -EMSGSIZE;
1376}
1377
1378static int nfc_genl_dump_ses(struct sk_buff *skb,
1379 struct netlink_callback *cb)
1380{
1381 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1382 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
1383 bool first_call = false;
1384
1385 if (!iter) {
1386 first_call = true;
1387 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
1388 if (!iter)
1389 return -ENOMEM;
1390 cb->args[0] = (long) iter;
1391 }
1392
1393 mutex_lock(&nfc_devlist_mutex);
1394
1395 cb->seq = nfc_devlist_generation;
1396
1397 if (first_call) {
1398 nfc_device_iter_init(iter);
1399 dev = nfc_device_iter_next(iter);
1400 }
1401
1402 while (dev) {
1403 int rc;
1404
1405 rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid,
1406 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
1407 if (rc < 0)
1408 break;
1409
1410 dev = nfc_device_iter_next(iter);
1411 }
1412
1413 mutex_unlock(&nfc_devlist_mutex);
1414
1415 cb->args[1] = (long) dev;
1416
1417 return skb->len;
1418}
1419
1420static int nfc_genl_dump_ses_done(struct netlink_callback *cb)
1421{
1422 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1423
1424 nfc_device_iter_exit(iter);
1425 kfree(iter);
1426
1427 return 0;
1428}
1429
cd96db6f
CR		 1430static int nfc_se_io(struct nfc_dev *dev, u32 se_idx,
1431 u8 *apdu, size_t apdu_length,
1432 se_io_cb_t cb, void *cb_context)
1433{
1434 struct nfc_se *se;
1435 int rc;
1436
1437 pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
1438
1439 device_lock(&dev->dev);
1440
1441 if (!device_is_registered(&dev->dev)) {
1442 rc = -ENODEV;
1443 goto error;
1444 }
1445
1446 if (!dev->dev_up) {
1447 rc = -ENODEV;
1448 goto error;
1449 }
1450
1451 if (!dev->ops->se_io) {
1452 rc = -EOPNOTSUPP;
1453 goto error;
1454 }
1455
1456 se = nfc_find_se(dev, se_idx);
1457 if (!se) {
1458 rc = -EINVAL;
1459 goto error;
1460 }
1461
1462 if (se->state != NFC_SE_ENABLED) {
1463 rc = -ENODEV;
1464 goto error;
1465 }
1466
1467 rc = dev->ops->se_io(dev, se_idx, apdu,
1468 apdu_length, cb, cb_context);
1469
1470error:
1471 device_unlock(&dev->dev);
1472 return rc;
1473}
1474
5ce3f32b
SO		 1475struct se_io_ctx {
1476 u32 dev_idx;
1477 u32 se_idx;
1478};
1479
ddc1a70b 1480static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err)
5ce3f32b
SO		 1481{
1482 struct se_io_ctx *ctx = context;
1483 struct sk_buff *msg;
1484 void *hdr;
1485
1486 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1487 if (!msg) {
1488 kfree(ctx);
1489 return;
1490 }
1491
1492 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
1493 NFC_CMD_SE_IO);
1494 if (!hdr)
1495 goto free_msg;
1496
1497 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) ||
1498 nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) ||
1499 nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu))
1500 goto nla_put_failure;
1501
1502 genlmsg_end(msg, hdr);
1503
2a94fe48 1504 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
5ce3f32b
SO		 1505
1506 kfree(ctx);
1507
1508 return;
1509
1510nla_put_failure:
1511 genlmsg_cancel(msg, hdr);
1512free_msg:
1513 nlmsg_free(msg);
1514 kfree(ctx);
1515
1516 return;
1517}
1518
1519static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info)
1520{
1521 struct nfc_dev *dev;
1522 struct se_io_ctx *ctx;
1523 u32 dev_idx, se_idx;
1524 u8 *apdu;
1525 size_t apdu_len;
1526
1527 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1528 !info->attrs[NFC_ATTR_SE_INDEX] ||
1529 !info->attrs[NFC_ATTR_SE_APDU])
1530 return -EINVAL;
1531
1532 dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1533 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1534
1535 dev = nfc_get_device(dev_idx);
1536 if (!dev)
1537 return -ENODEV;
1538
1539 if (!dev->ops || !dev->ops->se_io)
1540 return -ENOTSUPP;
1541
1542 apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]);
1543 if (apdu_len == 0)
1544 return -EINVAL;
1545
1546 apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]);
1547 if (!apdu)
1548 return -EINVAL;
1549
1550 ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL);
1551 if (!ctx)
1552 return -ENOMEM;
1553
1554 ctx->dev_idx = dev_idx;
1555 ctx->se_idx = se_idx;
1556
cd96db6f 1557 return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
5ce3f32b
SO		 1558}
1559
9e58095f
SO		 1560static int nfc_genl_vendor_cmd(struct sk_buff *skb,
1561 struct genl_info *info)
1562{
1563 struct nfc_dev *dev;
1564 struct nfc_vendor_cmd *cmd;
1565 u32 dev_idx, vid, subcmd;
1566 u8 *data;
1567 size_t data_len;
29e76924 1568 int i, err;
9e58095f
SO		 1569
1570 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1571 !info->attrs[NFC_ATTR_VENDOR_ID] ||
1572 !info->attrs[NFC_ATTR_VENDOR_SUBCMD])
1573 return -EINVAL;
1574
1575 dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1576 vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]);
1577 subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]);
1578
1579 dev = nfc_get_device(dev_idx);
1580 if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds)
1581 return -ENODEV;
1582
fe202fe9
CR		 1583 if (info->attrs[NFC_ATTR_VENDOR_DATA]) {
1584 data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
9e58095f
SO		 1585 data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);
1586 if (data_len == 0)
1587 return -EINVAL;
1588 } else {
adca3c38 1589 data = NULL;
9e58095f
SO		 1590 data_len = 0;
1591 }
1592
1593 for (i = 0; i < dev->n_vendor_cmds; i++) {
1594 cmd = &dev->vendor_cmds[i];
1595
1596 if (cmd->vendor_id != vid || cmd->subcmd != subcmd)
1597 continue;
1598
29e76924
CR		 1599 dev->cur_cmd_info = info;
1600 err = cmd->doit(dev, data, data_len);
1601 dev->cur_cmd_info = NULL;
1602 return err;
9e58095f
SO		 1603 }
1604
1605 return -EOPNOTSUPP;
1606}
1607
29e76924
CR		 1608/* message building helper */
1609static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1610 int flags, u8 cmd)
1611{
1612 /* since there is no private header just add the generic one */
1613 return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd);
1614}
1615
1616static struct sk_buff *
1617__nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen,
1618 u32 portid, u32 seq,
1619 enum nfc_attrs attr,
1620 u32 oui, u32 subcmd, gfp_t gfp)
1621{
1622 struct sk_buff *skb;
1623 void *hdr;
1624
1625 skb = nlmsg_new(approxlen + 100, gfp);
1626 if (!skb)
1627 return NULL;
1628
1629 hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR);
1630 if (!hdr) {
1631 kfree_skb(skb);
1632 return NULL;
1633 }
1634
1635 if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx))
1636 goto nla_put_failure;
1637 if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui))
1638 goto nla_put_failure;
1639 if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd))
1640 goto nla_put_failure;
1641
1642 ((void **)skb->cb)[0] = dev;
1643 ((void **)skb->cb)[1] = hdr;
1644
1645 return skb;
1646
1647nla_put_failure:
1648 kfree_skb(skb);
1649 return NULL;
1650}
1651
1652struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev,
1653 enum nfc_attrs attr,
1654 u32 oui, u32 subcmd,
1655 int approxlen)
1656{
1657 if (WARN_ON(!dev->cur_cmd_info))
1658 return NULL;
1659
1660 return __nfc_alloc_vendor_cmd_skb(dev, approxlen,
1661 dev->cur_cmd_info->snd_portid,
1662 dev->cur_cmd_info->snd_seq, attr,
1663 oui, subcmd, GFP_KERNEL);
1664}
1665EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb);
1666
1667int nfc_vendor_cmd_reply(struct sk_buff *skb)
1668{
1669 struct nfc_dev *dev = ((void **)skb->cb)[0];
1670 void *hdr = ((void **)skb->cb)[1];
1671
1672 /* clear CB data for netlink core to own from now on */
1673 memset(skb->cb, 0, sizeof(skb->cb));
1674
1675 if (WARN_ON(!dev->cur_cmd_info)) {
1676 kfree_skb(skb);
1677 return -EINVAL;
1678 }
1679
1680 genlmsg_end(skb, hdr);
1681 return genlmsg_reply(skb, dev->cur_cmd_info);
1682}
1683EXPORT_SYMBOL(nfc_vendor_cmd_reply);
1684
4534de83 1685static const struct genl_ops nfc_genl_ops[] = {
4d12b8b1
LRV		 1686 {
1687 .cmd = NFC_CMD_GET_DEVICE,
1688 .doit = nfc_genl_get_device,
1689 .dumpit = nfc_genl_dump_devices,
1690 .done = nfc_genl_dump_devices_done,
1691 .policy = nfc_genl_policy,
8b3fe7b5
IE		 1692 },
1693 {
1694 .cmd = NFC_CMD_DEV_UP,
1695 .doit = nfc_genl_dev_up,
1696 .policy = nfc_genl_policy,
1697 },
1698 {
1699 .cmd = NFC_CMD_DEV_DOWN,
1700 .doit = nfc_genl_dev_down,
1701 .policy = nfc_genl_policy,
4d12b8b1
LRV		 1702 },
1703 {
1704 .cmd = NFC_CMD_START_POLL,
1705 .doit = nfc_genl_start_poll,
1706 .policy = nfc_genl_policy,
1707 },
1708 {
1709 .cmd = NFC_CMD_STOP_POLL,
1710 .doit = nfc_genl_stop_poll,
1711 .policy = nfc_genl_policy,
1712 },
1ed28f61
SO		 1713 {
1714 .cmd = NFC_CMD_DEP_LINK_UP,
1715 .doit = nfc_genl_dep_link_up,
1716 .policy = nfc_genl_policy,
1717 },
1718 {
1719 .cmd = NFC_CMD_DEP_LINK_DOWN,
1720 .doit = nfc_genl_dep_link_down,
1721 .policy = nfc_genl_policy,
1722 },
4d12b8b1
LRV		 1723 {
1724 .cmd = NFC_CMD_GET_TARGET,
1725 .dumpit = nfc_genl_dump_targets,
1726 .done = nfc_genl_dump_targets_done,
1727 .policy = nfc_genl_policy,
1728 },
52feb444
TE		 1729 {
1730 .cmd = NFC_CMD_LLC_GET_PARAMS,
1731 .doit = nfc_genl_llc_get_params,
1732 .policy = nfc_genl_policy,
1733 },
1734 {
1735 .cmd = NFC_CMD_LLC_SET_PARAMS,
1736 .doit = nfc_genl_llc_set_params,
1737 .policy = nfc_genl_policy,
1738 },
d9b8d8e1
TE		 1739 {
1740 .cmd = NFC_CMD_LLC_SDREQ,
1741 .doit = nfc_genl_llc_sdreq,
1742 .policy = nfc_genl_policy,
1743 },
9674da87 1744 {
9ea7187c
SO		 1745 .cmd = NFC_CMD_FW_DOWNLOAD,
1746 .doit = nfc_genl_fw_download,
9674da87
EL		 1747 .policy = nfc_genl_policy,
1748 },
be085653
SO		 1749 {
1750 .cmd = NFC_CMD_ENABLE_SE,
1751 .doit = nfc_genl_enable_se,
1752 .policy = nfc_genl_policy,
1753 },
1754 {
1755 .cmd = NFC_CMD_DISABLE_SE,
1756 .doit = nfc_genl_disable_se,
1757 .policy = nfc_genl_policy,
1758 },
ac22ac46
SO		 1759 {
1760 .cmd = NFC_CMD_GET_SE,
1761 .dumpit = nfc_genl_dump_ses,
1762 .done = nfc_genl_dump_ses_done,
1763 .policy = nfc_genl_policy,
1764 },
5ce3f32b
SO		 1765 {
1766 .cmd = NFC_CMD_SE_IO,
1767 .doit = nfc_genl_se_io,
1768 .policy = nfc_genl_policy,
1769 },
3682f49f
CR		 1770 {
1771 .cmd = NFC_CMD_ACTIVATE_TARGET,
1772 .doit = nfc_genl_activate_target,
1773 .policy = nfc_genl_policy,
1774 },
9e58095f
SO		 1775 {
1776 .cmd = NFC_CMD_VENDOR,
1777 .doit = nfc_genl_vendor_cmd,
1778 .policy = nfc_genl_policy,
1779 },
4d63adfe
MG		 1780 {
1781 .cmd = NFC_CMD_DEACTIVATE_TARGET,
1782 .doit = nfc_genl_deactivate_target,
1783 .policy = nfc_genl_policy,
1784 },
4d12b8b1
LRV		 1785};
1786
56989f6d 1787static struct genl_family nfc_genl_family __ro_after_init = {
489111e5
JB		 1788 .hdrsize = 0,
1789 .name = NFC_GENL_NAME,
1790 .version = NFC_GENL_VERSION,
1791 .maxattr = NFC_ATTR_MAX,
1792 .module = THIS_MODULE,
1793 .ops = nfc_genl_ops,
1794 .n_ops = ARRAY_SIZE(nfc_genl_ops),
1795 .mcgrps = nfc_genl_mcgrps,
1796 .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps),
1797};
1798
3c0cc8aa
SJ		 1799
1800struct urelease_work {
1801 struct work_struct w;
65bc4f93 1802 u32 portid;
3c0cc8aa
SJ		 1803};
1804
1805static void nfc_urelease_event_work(struct work_struct *work)
4d12b8b1 1806{
3c0cc8aa 1807 struct urelease_work *w = container_of(work, struct urelease_work, w);
4d12b8b1
LRV		 1808 struct class_dev_iter iter;
1809 struct nfc_dev *dev;
1810
c487606f 1811 pr_debug("portid %d\n", w->portid);
4d12b8b1 1812
3c0cc8aa 1813 mutex_lock(&nfc_devlist_mutex);
4d12b8b1
LRV		 1814
1815 nfc_device_iter_init(&iter);
1816 dev = nfc_device_iter_next(&iter);
1817
1818 while (dev) {
3c0cc8aa
SJ		 1819 mutex_lock(&dev->genl_data.genl_data_mutex);
1820
c487606f 1821 if (dev->genl_data.poll_req_portid == w->portid) {
4d12b8b1 1822 nfc_stop_poll(dev);
15e47304 1823 dev->genl_data.poll_req_portid = 0;
4d12b8b1 1824 }
3c0cc8aa
SJ		 1825
1826 mutex_unlock(&dev->genl_data.genl_data_mutex);
1827
4d12b8b1
LRV		 1828 dev = nfc_device_iter_next(&iter);
1829 }
1830
1831 nfc_device_iter_exit(&iter);
1832
3c0cc8aa
SJ		 1833 mutex_unlock(&nfc_devlist_mutex);
1834
1835 kfree(w);
1836}
1837
1838static int nfc_genl_rcv_nl_event(struct notifier_block *this,
1839 unsigned long event, void *ptr)
1840{
1841 struct netlink_notify *n = ptr;
1842 struct urelease_work *w;
1843
1844 if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
1845 goto out;
1846
c487606f 1847 pr_debug("NETLINK_URELEASE event from id %d\n", n->portid);
3c0cc8aa
SJ		 1848
1849 w = kmalloc(sizeof(*w), GFP_ATOMIC);
1850 if (w) {
1851 INIT_WORK((struct work_struct *) w, nfc_urelease_event_work);
c487606f 1852 w->portid = n->portid;
3c0cc8aa
SJ		 1853 schedule_work((struct work_struct *) w);
1854 }
1855
4d12b8b1
LRV		 1856out:
1857 return NOTIFY_DONE;
1858}
1859
1860void nfc_genl_data_init(struct nfc_genl_data *genl_data)
1861{
15e47304 1862 genl_data->poll_req_portid = 0;
4d12b8b1
LRV		 1863 mutex_init(&genl_data->genl_data_mutex);
1864}
1865
1866void nfc_genl_data_exit(struct nfc_genl_data *genl_data)
1867{
1868 mutex_destroy(&genl_data->genl_data_mutex);
1869}
1870
1871static struct notifier_block nl_notifier = {
1872 .notifier_call = nfc_genl_rcv_nl_event,
1873};
1874
1875/**
1876 * nfc_genl_init() - Initialize netlink interface
1877 *
1878 * This initialization function registers the nfc netlink family.
1879 */
1880int __init nfc_genl_init(void)
1881{
1882 int rc;
1883
489111e5 1884 rc = genl_register_family(&nfc_genl_family);
4d12b8b1
LRV		 1885 if (rc)
1886 return rc;
1887
4d12b8b1
LRV		 1888 netlink_register_notifier(&nl_notifier);
1889
2a94fe48 1890 return 0;
4d12b8b1
LRV		 1891}
1892
1893/**
1894 * nfc_genl_exit() - Deinitialize netlink interface
1895 *
1896 * This exit function unregisters the nfc netlink family.
1897 */
1898void nfc_genl_exit(void)
1899{
1900 netlink_unregister_notifier(&nl_notifier);
1901 genl_unregister_family(&nfc_genl_family);
1902}
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