1 // SPDX-License-Identifier: GPL-2.0-or-later 1
2 /*
3 * Copyright (C) 2011 Instituto Nokia de Tecno
4 *
5 * Authors:
6 * Lauro Ramos Venancio <lauro.venancio@ope
7 * Aloisio Almeida Jr <aloisio.almeida@open
8 *
9 * Vendor commands implementation based on net
10 * which is:
11 *
12 * Copyright 2006-2010 Johannes Berg <johanne
13 * Copyright 2013-2014 Intel Mobile Communica
14 */
15
16 #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fm
17
18 #include <net/genetlink.h>
19 #include <linux/nfc.h>
20 #include <linux/slab.h>
21
22 #include "nfc.h"
23 #include "llcp.h"
24
25 static const struct genl_multicast_group nfc_g
26 { .name = NFC_GENL_MCAST_EVENT_NAME, }
27 };
28
29 static struct genl_family nfc_genl_family;
30 static const struct nla_policy nfc_genl_policy
31 [NFC_ATTR_DEVICE_INDEX] = { .type = NL
32 [NFC_ATTR_DEVICE_NAME] = { .type = NLA
33 .len = NFC_DEV
34 [NFC_ATTR_PROTOCOLS] = { .type = NLA_U
35 [NFC_ATTR_TARGET_INDEX] = { .type = NL
36 [NFC_ATTR_COMM_MODE] = { .type = NLA_U
37 [NFC_ATTR_RF_MODE] = { .type = NLA_U8
38 [NFC_ATTR_DEVICE_POWERED] = { .type =
39 [NFC_ATTR_IM_PROTOCOLS] = { .type = NL
40 [NFC_ATTR_TM_PROTOCOLS] = { .type = NL
41 [NFC_ATTR_LLC_PARAM_LTO] = { .type = N
42 [NFC_ATTR_LLC_PARAM_RW] = { .type = NL
43 [NFC_ATTR_LLC_PARAM_MIUX] = { .type =
44 [NFC_ATTR_LLC_SDP] = { .type = NLA_NES
45 [NFC_ATTR_FIRMWARE_NAME] = { .type = N
46 .len = NF
47 [NFC_ATTR_SE_INDEX] = { .type = NLA_U3
48 [NFC_ATTR_SE_APDU] = { .type = NLA_BIN
49 [NFC_ATTR_VENDOR_ID] = { .type = NLA_U
50 [NFC_ATTR_VENDOR_SUBCMD] = { .type = N
51 [NFC_ATTR_VENDOR_DATA] = { .type = NLA
52
53 };
54
55 static const struct nla_policy nfc_sdp_genl_po
56 [NFC_SDP_ATTR_URI] = { .type = NLA_STR
57 .len = U8_MAX -
58 [NFC_SDP_ATTR_SAP] = { .type = NLA_U8
59 };
60
61 static int nfc_genl_send_target(struct sk_buff
62 struct netlink
63 {
64 void *hdr;
65
66 hdr = genlmsg_put(msg, NETLINK_CB(cb->
67 &nfc_genl_family, fl
68 if (!hdr)
69 return -EMSGSIZE;
70
71 genl_dump_check_consistent(cb, hdr);
72
73 if (nla_put_u32(msg, NFC_ATTR_TARGET_I
74 nla_put_u32(msg, NFC_ATTR_PROTOCOL
75 nla_put_u16(msg, NFC_ATTR_TARGET_S
76 nla_put_u8(msg, NFC_ATTR_TARGET_SE
77 goto nla_put_failure;
78 if (target->nfcid1_len > 0 &&
79 nla_put(msg, NFC_ATTR_TARGET_NFCID
80 target->nfcid1))
81 goto nla_put_failure;
82 if (target->sensb_res_len > 0 &&
83 nla_put(msg, NFC_ATTR_TARGET_SENSB
84 target->sensb_res))
85 goto nla_put_failure;
86 if (target->sensf_res_len > 0 &&
87 nla_put(msg, NFC_ATTR_TARGET_SENSF
88 target->sensf_res))
89 goto nla_put_failure;
90
91 if (target->is_iso15693) {
92 if (nla_put_u8(msg, NFC_ATTR_T
93 target->iso1569
94 nla_put(msg, NFC_ATTR_TARG
95 sizeof(target->iso
96 goto nla_put_failure;
97 }
98
99 genlmsg_end(msg, hdr);
100 return 0;
101
102 nla_put_failure:
103 genlmsg_cancel(msg, hdr);
104 return -EMSGSIZE;
105 }
106
107 static struct nfc_dev *__get_device_from_cb(st
108 {
109 const struct genl_dumpit_info *info =
110 struct nfc_dev *dev;
111 u32 idx;
112
113 if (!info->info.attrs[NFC_ATTR_DEVICE_
114 return ERR_PTR(-EINVAL);
115
116 idx = nla_get_u32(info->info.attrs[NFC
117
118 dev = nfc_get_device(idx);
119 if (!dev)
120 return ERR_PTR(-ENODEV);
121
122 return dev;
123 }
124
125 static int nfc_genl_dump_targets(struct sk_buf
126 struct netlin
127 {
128 int i = cb->args[0];
129 struct nfc_dev *dev = (struct nfc_dev
130 int rc;
131
132 if (!dev) {
133 dev = __get_device_from_cb(cb)
134 if (IS_ERR(dev))
135 return PTR_ERR(dev);
136
137 cb->args[1] = (long) dev;
138 }
139
140 device_lock(&dev->dev);
141
142 cb->seq = dev->targets_generation;
143
144 while (i < dev->n_targets) {
145 rc = nfc_genl_send_target(skb,
146 NLM_
147 if (rc < 0)
148 break;
149
150 i++;
151 }
152
153 device_unlock(&dev->dev);
154
155 cb->args[0] = i;
156
157 return skb->len;
158 }
159
160 static int nfc_genl_dump_targets_done(struct n
161 {
162 struct nfc_dev *dev = (struct nfc_dev
163
164 if (dev)
165 nfc_put_device(dev);
166
167 return 0;
168 }
169
170 int nfc_genl_targets_found(struct nfc_dev *dev
171 {
172 struct sk_buff *msg;
173 void *hdr;
174
175 dev->genl_data.poll_req_portid = 0;
176
177 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
178 if (!msg)
179 return -ENOMEM;
180
181 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
182 NFC_EVENT_TARGETS_FO
183 if (!hdr)
184 goto free_msg;
185
186 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
187 goto nla_put_failure;
188
189 genlmsg_end(msg, hdr);
190
191 return genlmsg_multicast(&nfc_genl_fam
192
193 nla_put_failure:
194 free_msg:
195 nlmsg_free(msg);
196 return -EMSGSIZE;
197 }
198
199 int nfc_genl_target_lost(struct nfc_dev *dev,
200 {
201 struct sk_buff *msg;
202 void *hdr;
203
204 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
205 if (!msg)
206 return -ENOMEM;
207
208 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
209 NFC_EVENT_TARGET_LOS
210 if (!hdr)
211 goto free_msg;
212
213 if (nla_put_string(msg, NFC_ATTR_DEVIC
214 nla_put_u32(msg, NFC_ATTR_TARGET_I
215 goto nla_put_failure;
216
217 genlmsg_end(msg, hdr);
218
219 genlmsg_multicast(&nfc_genl_family, ms
220
221 return 0;
222
223 nla_put_failure:
224 free_msg:
225 nlmsg_free(msg);
226 return -EMSGSIZE;
227 }
228
229 int nfc_genl_tm_activated(struct nfc_dev *dev,
230 {
231 struct sk_buff *msg;
232 void *hdr;
233
234 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
235 if (!msg)
236 return -ENOMEM;
237
238 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
239 NFC_EVENT_TM_ACTIVAT
240 if (!hdr)
241 goto free_msg;
242
243 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
244 goto nla_put_failure;
245 if (nla_put_u32(msg, NFC_ATTR_TM_PROTO
246 goto nla_put_failure;
247
248 genlmsg_end(msg, hdr);
249
250 genlmsg_multicast(&nfc_genl_family, ms
251
252 return 0;
253
254 nla_put_failure:
255 free_msg:
256 nlmsg_free(msg);
257 return -EMSGSIZE;
258 }
259
260 int nfc_genl_tm_deactivated(struct nfc_dev *de
261 {
262 struct sk_buff *msg;
263 void *hdr;
264
265 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
266 if (!msg)
267 return -ENOMEM;
268
269 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
270 NFC_EVENT_TM_DEACTIV
271 if (!hdr)
272 goto free_msg;
273
274 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
275 goto nla_put_failure;
276
277 genlmsg_end(msg, hdr);
278
279 genlmsg_multicast(&nfc_genl_family, ms
280
281 return 0;
282
283 nla_put_failure:
284 free_msg:
285 nlmsg_free(msg);
286 return -EMSGSIZE;
287 }
288
289 static int nfc_genl_setup_device_added(struct
290 {
291 if (nla_put_string(msg, NFC_ATTR_DEVIC
292 nla_put_u32(msg, NFC_ATTR_DEVICE_I
293 nla_put_u32(msg, NFC_ATTR_PROTOCOL
294 nla_put_u8(msg, NFC_ATTR_DEVICE_PO
295 nla_put_u8(msg, NFC_ATTR_RF_MODE,
296 return -1;
297 return 0;
298 }
299
300 int nfc_genl_device_added(struct nfc_dev *dev)
301 {
302 struct sk_buff *msg;
303 void *hdr;
304
305 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
306 if (!msg)
307 return -ENOMEM;
308
309 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
310 NFC_EVENT_DEVICE_ADD
311 if (!hdr)
312 goto free_msg;
313
314 if (nfc_genl_setup_device_added(dev, m
315 goto nla_put_failure;
316
317 genlmsg_end(msg, hdr);
318
319 genlmsg_multicast(&nfc_genl_family, ms
320
321 return 0;
322
323 nla_put_failure:
324 free_msg:
325 nlmsg_free(msg);
326 return -EMSGSIZE;
327 }
328
329 int nfc_genl_device_removed(struct nfc_dev *de
330 {
331 struct sk_buff *msg;
332 void *hdr;
333
334 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
335 if (!msg)
336 return -ENOMEM;
337
338 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
339 NFC_EVENT_DEVICE_REM
340 if (!hdr)
341 goto free_msg;
342
343 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
344 goto nla_put_failure;
345
346 genlmsg_end(msg, hdr);
347
348 genlmsg_multicast(&nfc_genl_family, ms
349
350 return 0;
351
352 nla_put_failure:
353 free_msg:
354 nlmsg_free(msg);
355 return -EMSGSIZE;
356 }
357
358 int nfc_genl_llc_send_sdres(struct nfc_dev *de
359 {
360 struct sk_buff *msg;
361 struct nlattr *sdp_attr, *uri_attr;
362 struct nfc_llcp_sdp_tlv *sdres;
363 struct hlist_node *n;
364 void *hdr;
365 int rc = -EMSGSIZE;
366 int i;
367
368 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
369 if (!msg)
370 return -ENOMEM;
371
372 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
373 NFC_EVENT_LLC_SDRES)
374 if (!hdr)
375 goto free_msg;
376
377 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
378 goto nla_put_failure;
379
380 sdp_attr = nla_nest_start_noflag(msg,
381 if (sdp_attr == NULL) {
382 rc = -ENOMEM;
383 goto nla_put_failure;
384 }
385
386 i = 1;
387 hlist_for_each_entry_safe(sdres, n, sd
388 pr_debug("uri: %s, sap: %d\n",
389
390 uri_attr = nla_nest_start_nofl
391 if (uri_attr == NULL) {
392 rc = -ENOMEM;
393 goto nla_put_failure;
394 }
395
396 if (nla_put_u8(msg, NFC_SDP_AT
397 goto nla_put_failure;
398
399 if (nla_put_string(msg, NFC_SD
400 goto nla_put_failure;
401
402 nla_nest_end(msg, uri_attr);
403
404 hlist_del(&sdres->node);
405
406 nfc_llcp_free_sdp_tlv(sdres);
407 }
408
409 nla_nest_end(msg, sdp_attr);
410
411 genlmsg_end(msg, hdr);
412
413 return genlmsg_multicast(&nfc_genl_fam
414
415 nla_put_failure:
416 free_msg:
417 nlmsg_free(msg);
418
419 nfc_llcp_free_sdp_tlv_list(sdres_list)
420
421 return rc;
422 }
423
424 int nfc_genl_se_added(struct nfc_dev *dev, u32
425 {
426 struct sk_buff *msg;
427 void *hdr;
428
429 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
430 if (!msg)
431 return -ENOMEM;
432
433 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
434 NFC_EVENT_SE_ADDED);
435 if (!hdr)
436 goto free_msg;
437
438 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
439 nla_put_u32(msg, NFC_ATTR_SE_INDEX
440 nla_put_u8(msg, NFC_ATTR_SE_TYPE,
441 goto nla_put_failure;
442
443 genlmsg_end(msg, hdr);
444
445 genlmsg_multicast(&nfc_genl_family, ms
446
447 return 0;
448
449 nla_put_failure:
450 free_msg:
451 nlmsg_free(msg);
452 return -EMSGSIZE;
453 }
454
455 int nfc_genl_se_removed(struct nfc_dev *dev, u
456 {
457 struct sk_buff *msg;
458 void *hdr;
459
460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
461 if (!msg)
462 return -ENOMEM;
463
464 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
465 NFC_EVENT_SE_REMOVED
466 if (!hdr)
467 goto free_msg;
468
469 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
470 nla_put_u32(msg, NFC_ATTR_SE_INDEX
471 goto nla_put_failure;
472
473 genlmsg_end(msg, hdr);
474
475 genlmsg_multicast(&nfc_genl_family, ms
476
477 return 0;
478
479 nla_put_failure:
480 free_msg:
481 nlmsg_free(msg);
482 return -EMSGSIZE;
483 }
484
485 int nfc_genl_se_transaction(struct nfc_dev *de
486 struct nfc_evt_tra
487 {
488 struct nfc_se *se;
489 struct sk_buff *msg;
490 void *hdr;
491
492 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
493 if (!msg)
494 return -ENOMEM;
495
496 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
497 NFC_EVENT_SE_TRANSAC
498 if (!hdr)
499 goto free_msg;
500
501 se = nfc_find_se(dev, se_idx);
502 if (!se)
503 goto free_msg;
504
505 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
506 nla_put_u32(msg, NFC_ATTR_SE_INDEX
507 nla_put_u8(msg, NFC_ATTR_SE_TYPE,
508 nla_put(msg, NFC_ATTR_SE_AID, evt_
509 evt_transaction->aid) ||
510 nla_put(msg, NFC_ATTR_SE_PARAMS, e
511 evt_transaction->params))
512 goto nla_put_failure;
513
514 /* evt_transaction is no more used */
515 devm_kfree(&dev->dev, evt_transaction)
516
517 genlmsg_end(msg, hdr);
518
519 genlmsg_multicast(&nfc_genl_family, ms
520
521 return 0;
522
523 nla_put_failure:
524 free_msg:
525 /* evt_transaction is no more used */
526 devm_kfree(&dev->dev, evt_transaction)
527 nlmsg_free(msg);
528 return -EMSGSIZE;
529 }
530
531 int nfc_genl_se_connectivity(struct nfc_dev *d
532 {
533 const struct nfc_se *se;
534 struct sk_buff *msg;
535 void *hdr;
536
537 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
538 if (!msg)
539 return -ENOMEM;
540
541 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
542 NFC_EVENT_SE_CONNECT
543 if (!hdr)
544 goto free_msg;
545
546 se = nfc_find_se(dev, se_idx);
547 if (!se)
548 goto free_msg;
549
550 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
551 nla_put_u32(msg, NFC_ATTR_SE_INDEX
552 nla_put_u8(msg, NFC_ATTR_SE_TYPE,
553 goto nla_put_failure;
554
555 genlmsg_end(msg, hdr);
556
557 genlmsg_multicast(&nfc_genl_family, ms
558
559 return 0;
560
561 nla_put_failure:
562 free_msg:
563 nlmsg_free(msg);
564 return -EMSGSIZE;
565 }
566
567 static int nfc_genl_send_device(struct sk_buff
568 u32 portid, u3
569 struct netlink
570 int flags)
571 {
572 void *hdr;
573
574 hdr = genlmsg_put(msg, portid, seq, &n
575 NFC_CMD_GET_DEVICE);
576 if (!hdr)
577 return -EMSGSIZE;
578
579 if (cb)
580 genl_dump_check_consistent(cb,
581
582 if (nfc_genl_setup_device_added(dev, m
583 goto nla_put_failure;
584
585 genlmsg_end(msg, hdr);
586 return 0;
587
588 nla_put_failure:
589 genlmsg_cancel(msg, hdr);
590 return -EMSGSIZE;
591 }
592
593 static int nfc_genl_dump_devices(struct sk_buf
594 struct netlin
595 {
596 struct class_dev_iter *iter = (struct
597 struct nfc_dev *dev = (struct nfc_dev
598 bool first_call = false;
599
600 if (!iter) {
601 first_call = true;
602 iter = kmalloc(sizeof(struct c
603 if (!iter)
604 return -ENOMEM;
605 cb->args[0] = (long) iter;
606 }
607
608 mutex_lock(&nfc_devlist_mutex);
609
610 cb->seq = nfc_devlist_generation;
611
612 if (first_call) {
613 nfc_device_iter_init(iter);
614 dev = nfc_device_iter_next(ite
615 }
616
617 while (dev) {
618 int rc;
619
620 rc = nfc_genl_send_device(skb,
621 cb->
622 if (rc < 0)
623 break;
624
625 dev = nfc_device_iter_next(ite
626 }
627
628 mutex_unlock(&nfc_devlist_mutex);
629
630 cb->args[1] = (long) dev;
631
632 return skb->len;
633 }
634
635 static int nfc_genl_dump_devices_done(struct n
636 {
637 struct class_dev_iter *iter = (struct
638
639 if (iter) {
640 nfc_device_iter_exit(iter);
641 kfree(iter);
642 }
643
644 return 0;
645 }
646
647 int nfc_genl_dep_link_up_event(struct nfc_dev
648 u8 comm_mode, u
649 {
650 struct sk_buff *msg;
651 void *hdr;
652
653 pr_debug("DEP link is up\n");
654
655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
656 if (!msg)
657 return -ENOMEM;
658
659 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
660 if (!hdr)
661 goto free_msg;
662
663 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
664 goto nla_put_failure;
665 if (rf_mode == NFC_RF_INITIATOR &&
666 nla_put_u32(msg, NFC_ATTR_TARGET_I
667 goto nla_put_failure;
668 if (nla_put_u8(msg, NFC_ATTR_COMM_MODE
669 nla_put_u8(msg, NFC_ATTR_RF_MODE,
670 goto nla_put_failure;
671
672 genlmsg_end(msg, hdr);
673
674 dev->dep_link_up = true;
675
676 genlmsg_multicast(&nfc_genl_family, ms
677
678 return 0;
679
680 nla_put_failure:
681 free_msg:
682 nlmsg_free(msg);
683 return -EMSGSIZE;
684 }
685
686 int nfc_genl_dep_link_down_event(struct nfc_de
687 {
688 struct sk_buff *msg;
689 void *hdr;
690
691 pr_debug("DEP link is down\n");
692
693 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
694 if (!msg)
695 return -ENOMEM;
696
697 hdr = genlmsg_put(msg, 0, 0, &nfc_genl
698 NFC_CMD_DEP_LINK_DOW
699 if (!hdr)
700 goto free_msg;
701
702 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
703 goto nla_put_failure;
704
705 genlmsg_end(msg, hdr);
706
707 genlmsg_multicast(&nfc_genl_family, ms
708
709 return 0;
710
711 nla_put_failure:
712 free_msg:
713 nlmsg_free(msg);
714 return -EMSGSIZE;
715 }
716
717 static int nfc_genl_get_device(struct sk_buff
718 {
719 struct sk_buff *msg;
720 struct nfc_dev *dev;
721 u32 idx;
722 int rc = -ENOBUFS;
723
724 if (!info->attrs[NFC_ATTR_DEVICE_INDEX
725 return -EINVAL;
726
727 idx = nla_get_u32(info->attrs[NFC_ATTR
728
729 dev = nfc_get_device(idx);
730 if (!dev)
731 return -ENODEV;
732
733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GF
734 if (!msg) {
735 rc = -ENOMEM;
736 goto out_putdev;
737 }
738
739 rc = nfc_genl_send_device(msg, dev, in
740 NULL, 0);
741 if (rc < 0)
742 goto out_free;
743
744 nfc_put_device(dev);
745
746 return genlmsg_reply(msg, info);
747
748 out_free:
749 nlmsg_free(msg);
750 out_putdev:
751 nfc_put_device(dev);
752 return rc;
753 }
754
755 static int nfc_genl_dev_up(struct sk_buff *skb
756 {
757 struct nfc_dev *dev;
758 int rc;
759 u32 idx;
760
761 if (!info->attrs[NFC_ATTR_DEVICE_INDEX
762 return -EINVAL;
763
764 idx = nla_get_u32(info->attrs[NFC_ATTR
765
766 dev = nfc_get_device(idx);
767 if (!dev)
768 return -ENODEV;
769
770 rc = nfc_dev_up(dev);
771
772 nfc_put_device(dev);
773 return rc;
774 }
775
776 static int nfc_genl_dev_down(struct sk_buff *s
777 {
778 struct nfc_dev *dev;
779 int rc;
780 u32 idx;
781
782 if (!info->attrs[NFC_ATTR_DEVICE_INDEX
783 return -EINVAL;
784
785 idx = nla_get_u32(info->attrs[NFC_ATTR
786
787 dev = nfc_get_device(idx);
788 if (!dev)
789 return -ENODEV;
790
791 rc = nfc_dev_down(dev);
792
793 nfc_put_device(dev);
794 return rc;
795 }
796
797 static int nfc_genl_start_poll(struct sk_buff
798 {
799 struct nfc_dev *dev;
800 int rc;
801 u32 idx;
802 u32 im_protocols = 0, tm_protocols = 0
803
804 pr_debug("Poll start\n");
805
806 if (!info->attrs[NFC_ATTR_DEVICE_INDEX
807 ((!info->attrs[NFC_ATTR_IM_PROTOCO
808 !info->attrs[NFC_ATTR_PROTOCOLS]
809 !info->attrs[NFC_ATTR_TM_PROTOCO
810 return -EINVAL;
811
812 idx = nla_get_u32(info->attrs[NFC_ATTR
813
814 if (info->attrs[NFC_ATTR_TM_PROTOCOLS]
815 tm_protocols = nla_get_u32(inf
816
817 if (info->attrs[NFC_ATTR_IM_PROTOCOLS]
818 im_protocols = nla_get_u32(inf
819 else if (info->attrs[NFC_ATTR_PROTOCOL
820 im_protocols = nla_get_u32(inf
821
822 dev = nfc_get_device(idx);
823 if (!dev)
824 return -ENODEV;
825
826 mutex_lock(&dev->genl_data.genl_data_m
827
828 rc = nfc_start_poll(dev, im_protocols,
829 if (!rc)
830 dev->genl_data.poll_req_portid
831
832 mutex_unlock(&dev->genl_data.genl_data
833
834 nfc_put_device(dev);
835 return rc;
836 }
837
838 static int nfc_genl_stop_poll(struct sk_buff *
839 {
840 struct nfc_dev *dev;
841 int rc;
842 u32 idx;
843
844 if (!info->attrs[NFC_ATTR_DEVICE_INDEX
845 return -EINVAL;
846
847 idx = nla_get_u32(info->attrs[NFC_ATTR
848
849 dev = nfc_get_device(idx);
850 if (!dev)
851 return -ENODEV;
852
853 device_lock(&dev->dev);
854
855 if (!dev->polling) {
856 device_unlock(&dev->dev);
857 nfc_put_device(dev);
858 return -EINVAL;
859 }
860
861 device_unlock(&dev->dev);
862
863 mutex_lock(&dev->genl_data.genl_data_m
864
865 if (dev->genl_data.poll_req_portid !=
866 rc = -EBUSY;
867 goto out;
868 }
869
870 rc = nfc_stop_poll(dev);
871 dev->genl_data.poll_req_portid = 0;
872
873 out:
874 mutex_unlock(&dev->genl_data.genl_data
875 nfc_put_device(dev);
876 return rc;
877 }
878
879 static int nfc_genl_activate_target(struct sk_
880 {
881 struct nfc_dev *dev;
882 u32 device_idx, target_idx, protocol;
883 int rc;
884
885 if (!info->attrs[NFC_ATTR_DEVICE_INDEX
886 !info->attrs[NFC_ATTR_TARGET_INDEX
887 !info->attrs[NFC_ATTR_PROTOCOLS])
888 return -EINVAL;
889
890 device_idx = nla_get_u32(info->attrs[N
891
892 dev = nfc_get_device(device_idx);
893 if (!dev)
894 return -ENODEV;
895
896 target_idx = nla_get_u32(info->attrs[N
897 protocol = nla_get_u32(info->attrs[NFC
898
899 nfc_deactivate_target(dev, target_idx,
900 rc = nfc_activate_target(dev, target_i
901
902 nfc_put_device(dev);
903 return rc;
904 }
905
906 static int nfc_genl_deactivate_target(struct s
907 struct g
908 {
909 struct nfc_dev *dev;
910 u32 device_idx, target_idx;
911 int rc;
912
913 if (!info->attrs[NFC_ATTR_DEVICE_INDEX
914 !info->attrs[NFC_ATTR_TARGET_INDEX
915 return -EINVAL;
916
917 device_idx = nla_get_u32(info->attrs[N
918
919 dev = nfc_get_device(device_idx);
920 if (!dev)
921 return -ENODEV;
922
923 target_idx = nla_get_u32(info->attrs[N
924
925 rc = nfc_deactivate_target(dev, target
926
927 nfc_put_device(dev);
928 return rc;
929 }
930
931 static int nfc_genl_dep_link_up(struct sk_buff
932 {
933 struct nfc_dev *dev;
934 int rc, tgt_idx;
935 u32 idx;
936 u8 comm;
937
938 pr_debug("DEP link up\n");
939
940 if (!info->attrs[NFC_ATTR_DEVICE_INDEX
941 !info->attrs[NFC_ATTR_COMM_MODE])
942 return -EINVAL;
943
944 idx = nla_get_u32(info->attrs[NFC_ATTR
945 if (!info->attrs[NFC_ATTR_TARGET_INDEX
946 tgt_idx = NFC_TARGET_IDX_ANY;
947 else
948 tgt_idx = nla_get_u32(info->at
949
950 comm = nla_get_u8(info->attrs[NFC_ATTR
951
952 if (comm != NFC_COMM_ACTIVE && comm !=
953 return -EINVAL;
954
955 dev = nfc_get_device(idx);
956 if (!dev)
957 return -ENODEV;
958
959 rc = nfc_dep_link_up(dev, tgt_idx, com
960
961 nfc_put_device(dev);
962
963 return rc;
964 }
965
966 static int nfc_genl_dep_link_down(struct sk_bu
967 {
968 struct nfc_dev *dev;
969 int rc;
970 u32 idx;
971
972 if (!info->attrs[NFC_ATTR_DEVICE_INDEX
973 return -EINVAL;
974
975 idx = nla_get_u32(info->attrs[NFC_ATTR
976
977 dev = nfc_get_device(idx);
978 if (!dev)
979 return -ENODEV;
980
981 rc = nfc_dep_link_down(dev);
982
983 nfc_put_device(dev);
984 return rc;
985 }
986
987 static int nfc_genl_send_params(struct sk_buff
988 struct nfc_llc
989 u32 portid, u3
990 {
991 void *hdr;
992
993 hdr = genlmsg_put(msg, portid, seq, &n
994 NFC_CMD_LLC_GET_PARA
995 if (!hdr)
996 return -EMSGSIZE;
997
998 if (nla_put_u32(msg, NFC_ATTR_DEVICE_I
999 nla_put_u8(msg, NFC_ATTR_LLC_PARAM
1000 nla_put_u8(msg, NFC_ATTR_LLC_PARA
1001 nla_put_u16(msg, NFC_ATTR_LLC_PAR
1002 goto nla_put_failure;
1003
1004 genlmsg_end(msg, hdr);
1005 return 0;
1006
1007 nla_put_failure:
1008 genlmsg_cancel(msg, hdr);
1009 return -EMSGSIZE;
1010 }
1011
1012 static int nfc_genl_llc_get_params(struct sk_
1013 {
1014 struct nfc_dev *dev;
1015 struct nfc_llcp_local *local;
1016 int rc = 0;
1017 struct sk_buff *msg = NULL;
1018 u32 idx;
1019
1020 if (!info->attrs[NFC_ATTR_DEVICE_INDE
1021 return -EINVAL;
1022
1023 idx = nla_get_u32(info->attrs[NFC_ATT
1024
1025 dev = nfc_get_device(idx);
1026 if (!dev)
1027 return -ENODEV;
1028
1029 device_lock(&dev->dev);
1030
1031 local = nfc_llcp_find_local(dev);
1032 if (!local) {
1033 rc = -ENODEV;
1034 goto exit;
1035 }
1036
1037 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, G
1038 if (!msg) {
1039 rc = -ENOMEM;
1040 goto put_local;
1041 }
1042
1043 rc = nfc_genl_send_params(msg, local,
1044
1045 put_local:
1046 nfc_llcp_local_put(local);
1047
1048 exit:
1049 device_unlock(&dev->dev);
1050
1051 nfc_put_device(dev);
1052
1053 if (rc < 0) {
1054 if (msg)
1055 nlmsg_free(msg);
1056
1057 return rc;
1058 }
1059
1060 return genlmsg_reply(msg, info);
1061 }
1062
1063 static int nfc_genl_llc_set_params(struct sk_
1064 {
1065 struct nfc_dev *dev;
1066 struct nfc_llcp_local *local;
1067 u8 rw = 0;
1068 u16 miux = 0;
1069 u32 idx;
1070 int rc = 0;
1071
1072 if (!info->attrs[NFC_ATTR_DEVICE_INDE
1073 (!info->attrs[NFC_ATTR_LLC_PARAM_
1074 !info->attrs[NFC_ATTR_LLC_PARAM_
1075 !info->attrs[NFC_ATTR_LLC_PARAM_
1076 return -EINVAL;
1077
1078 if (info->attrs[NFC_ATTR_LLC_PARAM_RW
1079 rw = nla_get_u8(info->attrs[N
1080
1081 if (rw > LLCP_MAX_RW)
1082 return -EINVAL;
1083 }
1084
1085 if (info->attrs[NFC_ATTR_LLC_PARAM_MI
1086 miux = nla_get_u16(info->attr
1087
1088 if (miux > LLCP_MAX_MIUX)
1089 return -EINVAL;
1090 }
1091
1092 idx = nla_get_u32(info->attrs[NFC_ATT
1093
1094 dev = nfc_get_device(idx);
1095 if (!dev)
1096 return -ENODEV;
1097
1098 device_lock(&dev->dev);
1099
1100 local = nfc_llcp_find_local(dev);
1101 if (!local) {
1102 rc = -ENODEV;
1103 goto exit;
1104 }
1105
1106 if (info->attrs[NFC_ATTR_LLC_PARAM_LT
1107 if (dev->dep_link_up) {
1108 rc = -EINPROGRESS;
1109 goto put_local;
1110 }
1111
1112 local->lto = nla_get_u8(info-
1113 }
1114
1115 if (info->attrs[NFC_ATTR_LLC_PARAM_RW
1116 local->rw = rw;
1117
1118 if (info->attrs[NFC_ATTR_LLC_PARAM_MI
1119 local->miux = cpu_to_be16(miu
1120
1121 put_local:
1122 nfc_llcp_local_put(local);
1123
1124 exit:
1125 device_unlock(&dev->dev);
1126
1127 nfc_put_device(dev);
1128
1129 return rc;
1130 }
1131
1132 static int nfc_genl_llc_sdreq(struct sk_buff
1133 {
1134 struct nfc_dev *dev;
1135 struct nfc_llcp_local *local;
1136 struct nlattr *attr, *sdp_attrs[NFC_S
1137 u32 idx;
1138 u8 tid;
1139 char *uri;
1140 int rc = 0, rem;
1141 size_t uri_len, tlvs_len;
1142 struct hlist_head sdreq_list;
1143 struct nfc_llcp_sdp_tlv *sdreq;
1144
1145 if (!info->attrs[NFC_ATTR_DEVICE_INDE
1146 !info->attrs[NFC_ATTR_LLC_SDP])
1147 return -EINVAL;
1148
1149 idx = nla_get_u32(info->attrs[NFC_ATT
1150
1151 dev = nfc_get_device(idx);
1152 if (!dev)
1153 return -ENODEV;
1154
1155 device_lock(&dev->dev);
1156
1157 if (dev->dep_link_up == false) {
1158 rc = -ENOLINK;
1159 goto exit;
1160 }
1161
1162 local = nfc_llcp_find_local(dev);
1163 if (!local) {
1164 rc = -ENODEV;
1165 goto exit;
1166 }
1167
1168 INIT_HLIST_HEAD(&sdreq_list);
1169
1170 tlvs_len = 0;
1171
1172 nla_for_each_nested(attr, info->attrs
1173 rc = nla_parse_nested_depreca
1174
1175
1176
1177 if (rc != 0) {
1178 rc = -EINVAL;
1179 goto put_local;
1180 }
1181
1182 if (!sdp_attrs[NFC_SDP_ATTR_U
1183 continue;
1184
1185 uri_len = nla_len(sdp_attrs[N
1186 if (uri_len == 0)
1187 continue;
1188
1189 uri = nla_data(sdp_attrs[NFC_
1190 if (uri == NULL || *uri == 0)
1191 continue;
1192
1193 tid = local->sdreq_next_tid++
1194
1195 sdreq = nfc_llcp_build_sdreq_
1196 if (sdreq == NULL) {
1197 rc = -ENOMEM;
1198 goto put_local;
1199 }
1200
1201 tlvs_len += sdreq->tlv_len;
1202
1203 hlist_add_head(&sdreq->node,
1204 }
1205
1206 if (hlist_empty(&sdreq_list)) {
1207 rc = -EINVAL;
1208 goto put_local;
1209 }
1210
1211 rc = nfc_llcp_send_snl_sdreq(local, &
1212
1213 put_local:
1214 nfc_llcp_local_put(local);
1215
1216 exit:
1217 device_unlock(&dev->dev);
1218
1219 nfc_put_device(dev);
1220
1221 return rc;
1222 }
1223
1224 static int nfc_genl_fw_download(struct sk_buf
1225 {
1226 struct nfc_dev *dev;
1227 int rc;
1228 u32 idx;
1229 char firmware_name[NFC_FIRMWARE_NAME_
1230
1231 if (!info->attrs[NFC_ATTR_DEVICE_INDE
1232 return -EINVAL;
1233
1234 idx = nla_get_u32(info->attrs[NFC_ATT
1235
1236 dev = nfc_get_device(idx);
1237 if (!dev)
1238 return -ENODEV;
1239
1240 nla_strscpy(firmware_name, info->attr
1241 sizeof(firmware_name));
1242
1243 rc = nfc_fw_download(dev, firmware_na
1244
1245 nfc_put_device(dev);
1246 return rc;
1247 }
1248
1249 int nfc_genl_fw_download_done(struct nfc_dev
1250 u32 result)
1251 {
1252 struct sk_buff *msg;
1253 void *hdr;
1254
1255 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, G
1256 if (!msg)
1257 return -ENOMEM;
1258
1259 hdr = genlmsg_put(msg, 0, 0, &nfc_gen
1260 NFC_CMD_FW_DOWNLOAD
1261 if (!hdr)
1262 goto free_msg;
1263
1264 if (nla_put_string(msg, NFC_ATTR_FIRM
1265 nla_put_u32(msg, NFC_ATTR_FIRMWAR
1266 nla_put_u32(msg, NFC_ATTR_DEVICE_
1267 goto nla_put_failure;
1268
1269 genlmsg_end(msg, hdr);
1270
1271 genlmsg_multicast(&nfc_genl_family, m
1272
1273 return 0;
1274
1275 nla_put_failure:
1276 free_msg:
1277 nlmsg_free(msg);
1278 return -EMSGSIZE;
1279 }
1280
1281 static int nfc_genl_enable_se(struct sk_buff
1282 {
1283 struct nfc_dev *dev;
1284 int rc;
1285 u32 idx, se_idx;
1286
1287 if (!info->attrs[NFC_ATTR_DEVICE_INDE
1288 !info->attrs[NFC_ATTR_SE_INDEX])
1289 return -EINVAL;
1290
1291 idx = nla_get_u32(info->attrs[NFC_ATT
1292 se_idx = nla_get_u32(info->attrs[NFC_
1293
1294 dev = nfc_get_device(idx);
1295 if (!dev)
1296 return -ENODEV;
1297
1298 rc = nfc_enable_se(dev, se_idx);
1299
1300 nfc_put_device(dev);
1301 return rc;
1302 }
1303
1304 static int nfc_genl_disable_se(struct sk_buff
1305 {
1306 struct nfc_dev *dev;
1307 int rc;
1308 u32 idx, se_idx;
1309
1310 if (!info->attrs[NFC_ATTR_DEVICE_INDE
1311 !info->attrs[NFC_ATTR_SE_INDEX])
1312 return -EINVAL;
1313
1314 idx = nla_get_u32(info->attrs[NFC_ATT
1315 se_idx = nla_get_u32(info->attrs[NFC_
1316
1317 dev = nfc_get_device(idx);
1318 if (!dev)
1319 return -ENODEV;
1320
1321 rc = nfc_disable_se(dev, se_idx);
1322
1323 nfc_put_device(dev);
1324 return rc;
1325 }
1326
1327 static int nfc_genl_send_se(struct sk_buff *m
1328 u32 portid, u
1329 struct netlin
1330 int flags)
1331 {
1332 void *hdr;
1333 struct nfc_se *se, *n;
1334
1335 list_for_each_entry_safe(se, n, &dev-
1336 hdr = genlmsg_put(msg, portid
1337 NFC_CMD_GET
1338 if (!hdr)
1339 goto nla_put_failure;
1340
1341 if (cb)
1342 genl_dump_check_consi
1343
1344 if (nla_put_u32(msg, NFC_ATTR
1345 nla_put_u32(msg, NFC_ATTR
1346 nla_put_u8(msg, NFC_ATTR_
1347 goto nla_put_failure;
1348
1349 genlmsg_end(msg, hdr);
1350 }
1351
1352 return 0;
1353
1354 nla_put_failure:
1355 genlmsg_cancel(msg, hdr);
1356 return -EMSGSIZE;
1357 }
1358
1359 static int nfc_genl_dump_ses(struct sk_buff *
1360 struct netli
1361 {
1362 struct class_dev_iter *iter = (struct
1363 struct nfc_dev *dev = (struct nfc_dev
1364 bool first_call = false;
1365
1366 if (!iter) {
1367 first_call = true;
1368 iter = kmalloc(sizeof(struct
1369 if (!iter)
1370 return -ENOMEM;
1371 cb->args[0] = (long) iter;
1372 }
1373
1374 mutex_lock(&nfc_devlist_mutex);
1375
1376 cb->seq = nfc_devlist_generation;
1377
1378 if (first_call) {
1379 nfc_device_iter_init(iter);
1380 dev = nfc_device_iter_next(it
1381 }
1382
1383 while (dev) {
1384 int rc;
1385
1386 rc = nfc_genl_send_se(skb, de
1387 cb-
1388 if (rc < 0)
1389 break;
1390
1391 dev = nfc_device_iter_next(it
1392 }
1393
1394 mutex_unlock(&nfc_devlist_mutex);
1395
1396 cb->args[1] = (long) dev;
1397
1398 return skb->len;
1399 }
1400
1401 static int nfc_genl_dump_ses_done(struct netl
1402 {
1403 struct class_dev_iter *iter = (struct
1404
1405 if (iter) {
1406 nfc_device_iter_exit(iter);
1407 kfree(iter);
1408 }
1409
1410 return 0;
1411 }
1412
1413 static int nfc_se_io(struct nfc_dev *dev, u32
1414 u8 *apdu, size_t apdu_le
1415 se_io_cb_t cb, void *cb_
1416 {
1417 struct nfc_se *se;
1418 int rc;
1419
1420 pr_debug("%s se index %d\n", dev_name
1421
1422 device_lock(&dev->dev);
1423
1424 if (!device_is_registered(&dev->dev))
1425 rc = -ENODEV;
1426 goto error;
1427 }
1428
1429 if (!dev->dev_up) {
1430 rc = -ENODEV;
1431 goto error;
1432 }
1433
1434 if (!dev->ops->se_io) {
1435 rc = -EOPNOTSUPP;
1436 goto error;
1437 }
1438
1439 se = nfc_find_se(dev, se_idx);
1440 if (!se) {
1441 rc = -EINVAL;
1442 goto error;
1443 }
1444
1445 if (se->state != NFC_SE_ENABLED) {
1446 rc = -ENODEV;
1447 goto error;
1448 }
1449
1450 rc = dev->ops->se_io(dev, se_idx, apd
1451 apdu_length, cb, cb_c
1452
1453 device_unlock(&dev->dev);
1454 return rc;
1455
1456 error:
1457 device_unlock(&dev->dev);
1458 kfree(cb_context);
1459 return rc;
1460 }
1461
1462 struct se_io_ctx {
1463 u32 dev_idx;
1464 u32 se_idx;
1465 };
1466
1467 static void se_io_cb(void *context, u8 *apdu,
1468 {
1469 struct se_io_ctx *ctx = context;
1470 struct sk_buff *msg;
1471 void *hdr;
1472
1473 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, G
1474 if (!msg) {
1475 kfree(ctx);
1476 return;
1477 }
1478
1479 hdr = genlmsg_put(msg, 0, 0, &nfc_gen
1480 NFC_CMD_SE_IO);
1481 if (!hdr)
1482 goto free_msg;
1483
1484 if (nla_put_u32(msg, NFC_ATTR_DEVICE_
1485 nla_put_u32(msg, NFC_ATTR_SE_INDE
1486 nla_put(msg, NFC_ATTR_SE_APDU, ap
1487 goto nla_put_failure;
1488
1489 genlmsg_end(msg, hdr);
1490
1491 genlmsg_multicast(&nfc_genl_family, m
1492
1493 kfree(ctx);
1494
1495 return;
1496
1497 nla_put_failure:
1498 free_msg:
1499 nlmsg_free(msg);
1500 kfree(ctx);
1501
1502 return;
1503 }
1504
1505 static int nfc_genl_se_io(struct sk_buff *skb
1506 {
1507 struct nfc_dev *dev;
1508 struct se_io_ctx *ctx;
1509 u32 dev_idx, se_idx;
1510 u8 *apdu;
1511 size_t apdu_len;
1512 int rc;
1513
1514 if (!info->attrs[NFC_ATTR_DEVICE_INDE
1515 !info->attrs[NFC_ATTR_SE_INDEX] |
1516 !info->attrs[NFC_ATTR_SE_APDU])
1517 return -EINVAL;
1518
1519 dev_idx = nla_get_u32(info->attrs[NFC
1520 se_idx = nla_get_u32(info->attrs[NFC_
1521
1522 dev = nfc_get_device(dev_idx);
1523 if (!dev)
1524 return -ENODEV;
1525
1526 if (!dev->ops || !dev->ops->se_io) {
1527 rc = -EOPNOTSUPP;
1528 goto put_dev;
1529 }
1530
1531 apdu_len = nla_len(info->attrs[NFC_AT
1532 if (apdu_len == 0) {
1533 rc = -EINVAL;
1534 goto put_dev;
1535 }
1536
1537 apdu = nla_data(info->attrs[NFC_ATTR_
1538 if (!apdu) {
1539 rc = -EINVAL;
1540 goto put_dev;
1541 }
1542
1543 ctx = kzalloc(sizeof(struct se_io_ctx
1544 if (!ctx) {
1545 rc = -ENOMEM;
1546 goto put_dev;
1547 }
1548
1549 ctx->dev_idx = dev_idx;
1550 ctx->se_idx = se_idx;
1551
1552 rc = nfc_se_io(dev, se_idx, apdu, apd
1553
1554 put_dev:
1555 nfc_put_device(dev);
1556 return rc;
1557 }
1558
1559 static int nfc_genl_vendor_cmd(struct sk_buff
1560 struct genl_in
1561 {
1562 struct nfc_dev *dev;
1563 const struct nfc_vendor_cmd *cmd;
1564 u32 dev_idx, vid, subcmd;
1565 u8 *data;
1566 size_t data_len;
1567 int i, err;
1568
1569 if (!info->attrs[NFC_ATTR_DEVICE_INDE
1570 !info->attrs[NFC_ATTR_VENDOR_ID]
1571 !info->attrs[NFC_ATTR_VENDOR_SUBC
1572 return -EINVAL;
1573
1574 dev_idx = nla_get_u32(info->attrs[NFC
1575 vid = nla_get_u32(info->attrs[NFC_ATT
1576 subcmd = nla_get_u32(info->attrs[NFC_
1577
1578 dev = nfc_get_device(dev_idx);
1579 if (!dev)
1580 return -ENODEV;
1581
1582 if (!dev->vendor_cmds || !dev->n_vend
1583 err = -ENODEV;
1584 goto put_dev;
1585 }
1586
1587 if (info->attrs[NFC_ATTR_VENDOR_DATA]
1588 data = nla_data(info->attrs[N
1589 data_len = nla_len(info->attr
1590 if (data_len == 0) {
1591 err = -EINVAL;
1592 goto put_dev;
1593 }
1594 } else {
1595 data = NULL;
1596 data_len = 0;
1597 }
1598
1599 for (i = 0; i < dev->n_vendor_cmds; i
1600 cmd = &dev->vendor_cmds[i];
1601
1602 if (cmd->vendor_id != vid ||
1603 continue;
1604
1605 dev->cur_cmd_info = info;
1606 err = cmd->doit(dev, data, da
1607 dev->cur_cmd_info = NULL;
1608 goto put_dev;
1609 }
1610
1611 err = -EOPNOTSUPP;
1612
1613 put_dev:
1614 nfc_put_device(dev);
1615 return err;
1616 }
1617
1618 /* message building helper */
1619 static inline void *nfc_hdr_put(struct sk_buf
1620 int flags, u8
1621 {
1622 /* since there is no private header j
1623 return genlmsg_put(skb, portid, seq,
1624 }
1625
1626 static struct sk_buff *
1627 __nfc_alloc_vendor_cmd_skb(struct nfc_dev *de
1628 u32 portid, u32 se
1629 enum nfc_attrs att
1630 u32 oui, u32 subcm
1631 {
1632 struct sk_buff *skb;
1633 void *hdr;
1634
1635 skb = nlmsg_new(approxlen + 100, gfp)
1636 if (!skb)
1637 return NULL;
1638
1639 hdr = nfc_hdr_put(skb, portid, seq, 0
1640 if (!hdr) {
1641 kfree_skb(skb);
1642 return NULL;
1643 }
1644
1645 if (nla_put_u32(skb, NFC_ATTR_DEVICE_
1646 goto nla_put_failure;
1647 if (nla_put_u32(skb, NFC_ATTR_VENDOR_
1648 goto nla_put_failure;
1649 if (nla_put_u32(skb, NFC_ATTR_VENDOR_
1650 goto nla_put_failure;
1651
1652 ((void **)skb->cb)[0] = dev;
1653 ((void **)skb->cb)[1] = hdr;
1654
1655 return skb;
1656
1657 nla_put_failure:
1658 kfree_skb(skb);
1659 return NULL;
1660 }
1661
1662 struct sk_buff *__nfc_alloc_vendor_cmd_reply_
1663
1664
1665
1666 {
1667 if (WARN_ON(!dev->cur_cmd_info))
1668 return NULL;
1669
1670 return __nfc_alloc_vendor_cmd_skb(dev
1671 dev
1672 dev
1673 oui
1674 }
1675 EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_sk
1676
1677 int nfc_vendor_cmd_reply(struct sk_buff *skb)
1678 {
1679 struct nfc_dev *dev = ((void **)skb->
1680 void *hdr = ((void **)skb->cb)[1];
1681
1682 /* clear CB data for netlink core to
1683 memset(skb->cb, 0, sizeof(skb->cb));
1684
1685 if (WARN_ON(!dev->cur_cmd_info)) {
1686 kfree_skb(skb);
1687 return -EINVAL;
1688 }
1689
1690 genlmsg_end(skb, hdr);
1691 return genlmsg_reply(skb, dev->cur_cm
1692 }
1693 EXPORT_SYMBOL(nfc_vendor_cmd_reply);
1694
1695 static const struct genl_ops nfc_genl_ops[] =
1696 {
1697 .cmd = NFC_CMD_GET_DEVICE,
1698 .validate = GENL_DONT_VALIDAT
1699 .doit = nfc_genl_get_device,
1700 .dumpit = nfc_genl_dump_devic
1701 .done = nfc_genl_dump_devices
1702 },
1703 {
1704 .cmd = NFC_CMD_DEV_UP,
1705 .validate = GENL_DONT_VALIDAT
1706 .doit = nfc_genl_dev_up,
1707 .flags = GENL_ADMIN_PERM,
1708 },
1709 {
1710 .cmd = NFC_CMD_DEV_DOWN,
1711 .validate = GENL_DONT_VALIDAT
1712 .doit = nfc_genl_dev_down,
1713 .flags = GENL_ADMIN_PERM,
1714 },
1715 {
1716 .cmd = NFC_CMD_START_POLL,
1717 .validate = GENL_DONT_VALIDAT
1718 .doit = nfc_genl_start_poll,
1719 .flags = GENL_ADMIN_PERM,
1720 },
1721 {
1722 .cmd = NFC_CMD_STOP_POLL,
1723 .validate = GENL_DONT_VALIDAT
1724 .doit = nfc_genl_stop_poll,
1725 .flags = GENL_ADMIN_PERM,
1726 },
1727 {
1728 .cmd = NFC_CMD_DEP_LINK_UP,
1729 .validate = GENL_DONT_VALIDAT
1730 .doit = nfc_genl_dep_link_up,
1731 .flags = GENL_ADMIN_PERM,
1732 },
1733 {
1734 .cmd = NFC_CMD_DEP_LINK_DOWN,
1735 .validate = GENL_DONT_VALIDAT
1736 .doit = nfc_genl_dep_link_dow
1737 .flags = GENL_ADMIN_PERM,
1738 },
1739 {
1740 .cmd = NFC_CMD_GET_TARGET,
1741 .validate = GENL_DONT_VALIDAT
1742 GENL_DONT_VALIDAT
1743 .dumpit = nfc_genl_dump_targe
1744 .done = nfc_genl_dump_targets
1745 },
1746 {
1747 .cmd = NFC_CMD_LLC_GET_PARAMS
1748 .validate = GENL_DONT_VALIDAT
1749 .doit = nfc_genl_llc_get_para
1750 },
1751 {
1752 .cmd = NFC_CMD_LLC_SET_PARAMS
1753 .validate = GENL_DONT_VALIDAT
1754 .doit = nfc_genl_llc_set_para
1755 .flags = GENL_ADMIN_PERM,
1756 },
1757 {
1758 .cmd = NFC_CMD_LLC_SDREQ,
1759 .validate = GENL_DONT_VALIDAT
1760 .doit = nfc_genl_llc_sdreq,
1761 .flags = GENL_ADMIN_PERM,
1762 },
1763 {
1764 .cmd = NFC_CMD_FW_DOWNLOAD,
1765 .validate = GENL_DONT_VALIDAT
1766 .doit = nfc_genl_fw_download,
1767 .flags = GENL_ADMIN_PERM,
1768 },
1769 {
1770 .cmd = NFC_CMD_ENABLE_SE,
1771 .validate = GENL_DONT_VALIDAT
1772 .doit = nfc_genl_enable_se,
1773 .flags = GENL_ADMIN_PERM,
1774 },
1775 {
1776 .cmd = NFC_CMD_DISABLE_SE,
1777 .validate = GENL_DONT_VALIDAT
1778 .doit = nfc_genl_disable_se,
1779 .flags = GENL_ADMIN_PERM,
1780 },
1781 {
1782 .cmd = NFC_CMD_GET_SE,
1783 .validate = GENL_DONT_VALIDAT
1784 .dumpit = nfc_genl_dump_ses,
1785 .done = nfc_genl_dump_ses_don
1786 },
1787 {
1788 .cmd = NFC_CMD_SE_IO,
1789 .validate = GENL_DONT_VALIDAT
1790 .doit = nfc_genl_se_io,
1791 .flags = GENL_ADMIN_PERM,
1792 },
1793 {
1794 .cmd = NFC_CMD_ACTIVATE_TARGE
1795 .validate = GENL_DONT_VALIDAT
1796 .doit = nfc_genl_activate_tar
1797 .flags = GENL_ADMIN_PERM,
1798 },
1799 {
1800 .cmd = NFC_CMD_VENDOR,
1801 .validate = GENL_DONT_VALIDAT
1802 .doit = nfc_genl_vendor_cmd,
1803 .flags = GENL_ADMIN_PERM,
1804 },
1805 {
1806 .cmd = NFC_CMD_DEACTIVATE_TAR
1807 .validate = GENL_DONT_VALIDAT
1808 .doit = nfc_genl_deactivate_t
1809 .flags = GENL_ADMIN_PERM,
1810 },
1811 };
1812
1813 static struct genl_family nfc_genl_family __r
1814 .hdrsize = 0,
1815 .name = NFC_GENL_NAME,
1816 .version = NFC_GENL_VERSION,
1817 .maxattr = NFC_ATTR_MAX,
1818 .policy = nfc_genl_policy,
1819 .module = THIS_MODULE,
1820 .ops = nfc_genl_ops,
1821 .n_ops = ARRAY_SIZE(nfc_genl_ops),
1822 .resv_start_op = NFC_CMD_DEACTIVATE_T
1823 .mcgrps = nfc_genl_mcgrps,
1824 .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrp
1825 };
1826
1827
1828 struct urelease_work {
1829 struct work_struct w;
1830 u32 portid;
1831 };
1832
1833 static void nfc_urelease_event_work(struct wo
1834 {
1835 struct urelease_work *w = container_o
1836 struct class_dev_iter iter;
1837 struct nfc_dev *dev;
1838
1839 pr_debug("portid %d\n", w->portid);
1840
1841 mutex_lock(&nfc_devlist_mutex);
1842
1843 nfc_device_iter_init(&iter);
1844 dev = nfc_device_iter_next(&iter);
1845
1846 while (dev) {
1847 mutex_lock(&dev->genl_data.ge
1848
1849 if (dev->genl_data.poll_req_p
1850 nfc_stop_poll(dev);
1851 dev->genl_data.poll_r
1852 }
1853
1854 mutex_unlock(&dev->genl_data.
1855
1856 dev = nfc_device_iter_next(&i
1857 }
1858
1859 nfc_device_iter_exit(&iter);
1860
1861 mutex_unlock(&nfc_devlist_mutex);
1862
1863 kfree(w);
1864 }
1865
1866 static int nfc_genl_rcv_nl_event(struct notif
1867 unsigned lon
1868 {
1869 struct netlink_notify *n = ptr;
1870 struct urelease_work *w;
1871
1872 if (event != NETLINK_URELEASE || n->p
1873 goto out;
1874
1875 pr_debug("NETLINK_URELEASE event from
1876
1877 w = kmalloc(sizeof(*w), GFP_ATOMIC);
1878 if (w) {
1879 INIT_WORK(&w->w, nfc_urelease
1880 w->portid = n->portid;
1881 schedule_work(&w->w);
1882 }
1883
1884 out:
1885 return NOTIFY_DONE;
1886 }
1887
1888 void nfc_genl_data_init(struct nfc_genl_data
1889 {
1890 genl_data->poll_req_portid = 0;
1891 mutex_init(&genl_data->genl_data_mute
1892 }
1893
1894 void nfc_genl_data_exit(struct nfc_genl_data
1895 {
1896 mutex_destroy(&genl_data->genl_data_m
1897 }
1898
1899 static struct notifier_block nl_notifier = {
1900 .notifier_call = nfc_genl_rcv_nl_eve
1901 };
1902
1903 /**
1904 * nfc_genl_init() - Initialize netlink inter
1905 *
1906 * This initialization function registers the
1907 */
1908 int __init nfc_genl_init(void)
1909 {
1910 int rc;
1911
1912 rc = genl_register_family(&nfc_genl_f
1913 if (rc)
1914 return rc;
1915
1916 netlink_register_notifier(&nl_notifie
1917
1918 return 0;
1919 }
1920
1921 /**
1922 * nfc_genl_exit() - Deinitialize netlink int
1923 *
1924 * This exit function unregisters the nfc net
1925 */
1926 void nfc_genl_exit(void)
1927 {
1928 netlink_unregister_notifier(&nl_notif
1929 genl_unregister_family(&nfc_genl_fami
1930 }
1931
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