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 }, |
29e76924 CR |
66 | [NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, |
67 | ||
d9b8d8e1 TE |
68 | }; |
69 | ||
70 | static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = { | |
71 | [NFC_SDP_ATTR_URI] = { .type = NLA_STRING }, | |
72 | [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 }, | |
4d12b8b1 LRV |
73 | }; |
74 | ||
75 | static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target, | |
0a40acb2 | 76 | struct netlink_callback *cb, int flags) |
4d12b8b1 LRV |
77 | { |
78 | void *hdr; | |
79 | ||
15e47304 | 80 | hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
0a40acb2 | 81 | &nfc_genl_family, flags, NFC_CMD_GET_TARGET); |
4d12b8b1 LRV |
82 | if (!hdr) |
83 | return -EMSGSIZE; | |
84 | ||
85 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
86 | ||
1e6428d8 DM |
87 | if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) || |
88 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) || | |
89 | nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) || | |
90 | nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res)) | |
91 | goto nla_put_failure; | |
92 | if (target->nfcid1_len > 0 && | |
93 | nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len, | |
94 | target->nfcid1)) | |
95 | goto nla_put_failure; | |
96 | if (target->sensb_res_len > 0 && | |
97 | nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len, | |
98 | target->sensb_res)) | |
99 | goto nla_put_failure; | |
100 | if (target->sensf_res_len > 0 && | |
101 | nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len, | |
102 | target->sensf_res)) | |
103 | goto nla_put_failure; | |
4d12b8b1 | 104 | |
f5f6872e MG |
105 | if (target->is_iso15693) { |
106 | if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID, | |
107 | target->iso15693_dsfid) || | |
108 | nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID, | |
109 | sizeof(target->iso15693_uid), target->iso15693_uid)) | |
110 | goto nla_put_failure; | |
111 | } | |
112 | ||
053c095a JB |
113 | genlmsg_end(msg, hdr); |
114 | return 0; | |
4d12b8b1 LRV |
115 | |
116 | nla_put_failure: | |
117 | genlmsg_cancel(msg, hdr); | |
118 | return -EMSGSIZE; | |
119 | } | |
120 | ||
121 | static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) | |
122 | { | |
123 | struct nfc_dev *dev; | |
124 | int rc; | |
125 | u32 idx; | |
126 | ||
127 | rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize, | |
0a40acb2 SO |
128 | nfc_genl_family.attrbuf, |
129 | nfc_genl_family.maxattr, | |
130 | nfc_genl_policy); | |
4d12b8b1 LRV |
131 | if (rc < 0) |
132 | return ERR_PTR(rc); | |
133 | ||
134 | if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]) | |
135 | return ERR_PTR(-EINVAL); | |
136 | ||
137 | idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]); | |
138 | ||
139 | dev = nfc_get_device(idx); | |
140 | if (!dev) | |
141 | return ERR_PTR(-ENODEV); | |
142 | ||
143 | return dev; | |
144 | } | |
145 | ||
146 | static int nfc_genl_dump_targets(struct sk_buff *skb, | |
0a40acb2 | 147 | struct netlink_callback *cb) |
4d12b8b1 LRV |
148 | { |
149 | int i = cb->args[0]; | |
150 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
151 | int rc; | |
152 | ||
4d12b8b1 LRV |
153 | if (!dev) { |
154 | dev = __get_device_from_cb(cb); | |
155 | if (IS_ERR(dev)) | |
156 | return PTR_ERR(dev); | |
157 | ||
158 | cb->args[1] = (long) dev; | |
159 | } | |
160 | ||
d4ccb132 | 161 | device_lock(&dev->dev); |
4d12b8b1 LRV |
162 | |
163 | cb->seq = dev->targets_generation; | |
164 | ||
165 | while (i < dev->n_targets) { | |
166 | rc = nfc_genl_send_target(skb, &dev->targets[i], cb, | |
0a40acb2 | 167 | NLM_F_MULTI); |
4d12b8b1 LRV |
168 | if (rc < 0) |
169 | break; | |
170 | ||
171 | i++; | |
172 | } | |
173 | ||
d4ccb132 | 174 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
175 | |
176 | cb->args[0] = i; | |
177 | ||
178 | return skb->len; | |
179 | } | |
180 | ||
181 | static int nfc_genl_dump_targets_done(struct netlink_callback *cb) | |
182 | { | |
183 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
184 | ||
4d12b8b1 LRV |
185 | if (dev) |
186 | nfc_put_device(dev); | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
191 | int nfc_genl_targets_found(struct nfc_dev *dev) | |
192 | { | |
193 | struct sk_buff *msg; | |
194 | void *hdr; | |
195 | ||
15e47304 | 196 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 197 | |
58050fce | 198 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
4d12b8b1 LRV |
199 | if (!msg) |
200 | return -ENOMEM; | |
201 | ||
202 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 203 | NFC_EVENT_TARGETS_FOUND); |
4d12b8b1 LRV |
204 | if (!hdr) |
205 | goto free_msg; | |
206 | ||
1e6428d8 DM |
207 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
208 | goto nla_put_failure; | |
4d12b8b1 LRV |
209 | |
210 | genlmsg_end(msg, hdr); | |
211 | ||
2a94fe48 | 212 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
4d12b8b1 LRV |
213 | |
214 | nla_put_failure: | |
215 | genlmsg_cancel(msg, hdr); | |
216 | free_msg: | |
217 | nlmsg_free(msg); | |
218 | return -EMSGSIZE; | |
219 | } | |
220 | ||
8112a5c9 SO |
221 | int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) |
222 | { | |
223 | struct sk_buff *msg; | |
224 | void *hdr; | |
225 | ||
58050fce | 226 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
8112a5c9 SO |
227 | if (!msg) |
228 | return -ENOMEM; | |
229 | ||
230 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
231 | NFC_EVENT_TARGET_LOST); | |
232 | if (!hdr) | |
233 | goto free_msg; | |
234 | ||
59ef43e6 JL |
235 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
236 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
237 | goto nla_put_failure; | |
8112a5c9 SO |
238 | |
239 | genlmsg_end(msg, hdr); | |
240 | ||
2a94fe48 | 241 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
8112a5c9 SO |
242 | |
243 | return 0; | |
244 | ||
fc40a8c1 SO |
245 | nla_put_failure: |
246 | genlmsg_cancel(msg, hdr); | |
247 | free_msg: | |
248 | nlmsg_free(msg); | |
249 | return -EMSGSIZE; | |
250 | } | |
251 | ||
252 | int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) | |
253 | { | |
254 | struct sk_buff *msg; | |
255 | void *hdr; | |
256 | ||
58050fce | 257 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
258 | if (!msg) |
259 | return -ENOMEM; | |
260 | ||
261 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
262 | NFC_EVENT_TM_ACTIVATED); | |
263 | if (!hdr) | |
264 | goto free_msg; | |
265 | ||
266 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
267 | goto nla_put_failure; | |
268 | if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) | |
269 | goto nla_put_failure; | |
270 | ||
271 | genlmsg_end(msg, hdr); | |
272 | ||
2a94fe48 | 273 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
274 | |
275 | return 0; | |
276 | ||
277 | nla_put_failure: | |
278 | genlmsg_cancel(msg, hdr); | |
279 | free_msg: | |
280 | nlmsg_free(msg); | |
281 | return -EMSGSIZE; | |
282 | } | |
283 | ||
284 | int nfc_genl_tm_deactivated(struct nfc_dev *dev) | |
285 | { | |
286 | struct sk_buff *msg; | |
287 | void *hdr; | |
288 | ||
58050fce | 289 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
290 | if (!msg) |
291 | return -ENOMEM; | |
292 | ||
293 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
294 | NFC_EVENT_TM_DEACTIVATED); | |
295 | if (!hdr) | |
296 | goto free_msg; | |
297 | ||
298 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
299 | goto nla_put_failure; | |
300 | ||
301 | genlmsg_end(msg, hdr); | |
302 | ||
2a94fe48 | 303 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
304 | |
305 | return 0; | |
306 | ||
8112a5c9 SO |
307 | nla_put_failure: |
308 | genlmsg_cancel(msg, hdr); | |
309 | free_msg: | |
310 | nlmsg_free(msg); | |
311 | return -EMSGSIZE; | |
312 | } | |
313 | ||
4d12b8b1 LRV |
314 | int nfc_genl_device_added(struct nfc_dev *dev) |
315 | { | |
316 | struct sk_buff *msg; | |
317 | void *hdr; | |
318 | ||
58050fce | 319 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
320 | if (!msg) |
321 | return -ENOMEM; | |
322 | ||
323 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 324 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
325 | if (!hdr) |
326 | goto free_msg; | |
327 | ||
1e6428d8 DM |
328 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
329 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
330 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
331 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up)) | |
332 | goto nla_put_failure; | |
4d12b8b1 LRV |
333 | |
334 | genlmsg_end(msg, hdr); | |
335 | ||
2a94fe48 | 336 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
337 | |
338 | return 0; | |
339 | ||
340 | nla_put_failure: | |
341 | genlmsg_cancel(msg, hdr); | |
342 | free_msg: | |
343 | nlmsg_free(msg); | |
344 | return -EMSGSIZE; | |
345 | } | |
346 | ||
347 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
348 | { | |
349 | struct sk_buff *msg; | |
350 | void *hdr; | |
351 | ||
58050fce | 352 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
353 | if (!msg) |
354 | return -ENOMEM; | |
355 | ||
356 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 357 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
358 | if (!hdr) |
359 | goto free_msg; | |
360 | ||
1e6428d8 DM |
361 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
362 | goto nla_put_failure; | |
4d12b8b1 LRV |
363 | |
364 | genlmsg_end(msg, hdr); | |
365 | ||
2a94fe48 | 366 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
367 | |
368 | return 0; | |
369 | ||
370 | nla_put_failure: | |
371 | genlmsg_cancel(msg, hdr); | |
372 | free_msg: | |
373 | nlmsg_free(msg); | |
374 | return -EMSGSIZE; | |
375 | } | |
376 | ||
d9b8d8e1 TE |
377 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
378 | { | |
379 | struct sk_buff *msg; | |
380 | struct nlattr *sdp_attr, *uri_attr; | |
381 | struct nfc_llcp_sdp_tlv *sdres; | |
382 | struct hlist_node *n; | |
383 | void *hdr; | |
384 | int rc = -EMSGSIZE; | |
385 | int i; | |
386 | ||
387 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
388 | if (!msg) | |
389 | return -ENOMEM; | |
390 | ||
391 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
392 | NFC_EVENT_LLC_SDRES); | |
393 | if (!hdr) | |
394 | goto free_msg; | |
395 | ||
396 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
397 | goto nla_put_failure; | |
398 | ||
399 | sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP); | |
400 | if (sdp_attr == NULL) { | |
401 | rc = -ENOMEM; | |
402 | goto nla_put_failure; | |
403 | } | |
404 | ||
405 | i = 1; | |
406 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
407 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
408 | ||
409 | uri_attr = nla_nest_start(msg, i++); | |
410 | if (uri_attr == NULL) { | |
411 | rc = -ENOMEM; | |
412 | goto nla_put_failure; | |
413 | } | |
414 | ||
415 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
416 | goto nla_put_failure; | |
417 | ||
418 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
419 | goto nla_put_failure; | |
420 | ||
421 | nla_nest_end(msg, uri_attr); | |
422 | ||
423 | hlist_del(&sdres->node); | |
424 | ||
425 | nfc_llcp_free_sdp_tlv(sdres); | |
426 | } | |
427 | ||
428 | nla_nest_end(msg, sdp_attr); | |
429 | ||
430 | genlmsg_end(msg, hdr); | |
431 | ||
2a94fe48 | 432 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
d9b8d8e1 TE |
433 | |
434 | nla_put_failure: | |
435 | genlmsg_cancel(msg, hdr); | |
436 | ||
437 | free_msg: | |
438 | nlmsg_free(msg); | |
439 | ||
440 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
441 | ||
442 | return rc; | |
443 | } | |
444 | ||
2757c372 SO |
445 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
446 | { | |
447 | struct sk_buff *msg; | |
448 | void *hdr; | |
449 | ||
450 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
451 | if (!msg) | |
452 | return -ENOMEM; | |
453 | ||
454 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
455 | NFC_EVENT_SE_ADDED); | |
456 | if (!hdr) | |
457 | goto free_msg; | |
458 | ||
459 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
460 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
461 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
462 | goto nla_put_failure; | |
463 | ||
464 | genlmsg_end(msg, hdr); | |
465 | ||
2a94fe48 | 466 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
467 | |
468 | return 0; | |
469 | ||
470 | nla_put_failure: | |
471 | genlmsg_cancel(msg, hdr); | |
472 | free_msg: | |
473 | nlmsg_free(msg); | |
474 | return -EMSGSIZE; | |
475 | } | |
476 | ||
477 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
478 | { | |
479 | struct sk_buff *msg; | |
480 | void *hdr; | |
481 | ||
482 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
483 | if (!msg) | |
484 | return -ENOMEM; | |
485 | ||
486 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
487 | NFC_EVENT_SE_REMOVED); | |
488 | if (!hdr) | |
489 | goto free_msg; | |
490 | ||
491 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
492 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
493 | goto nla_put_failure; | |
494 | ||
495 | genlmsg_end(msg, hdr); | |
496 | ||
2a94fe48 | 497 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
498 | |
499 | return 0; | |
500 | ||
501 | nla_put_failure: | |
502 | genlmsg_cancel(msg, hdr); | |
503 | free_msg: | |
504 | nlmsg_free(msg); | |
505 | return -EMSGSIZE; | |
506 | } | |
507 | ||
447b27c4 CR |
508 | int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx, |
509 | struct nfc_evt_transaction *evt_transaction) | |
510 | { | |
511 | struct nfc_se *se; | |
512 | struct sk_buff *msg; | |
513 | void *hdr; | |
514 | ||
515 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
516 | if (!msg) | |
517 | return -ENOMEM; | |
518 | ||
519 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
520 | NFC_EVENT_SE_TRANSACTION); | |
521 | if (!hdr) | |
522 | goto free_msg; | |
523 | ||
524 | se = nfc_find_se(dev, se_idx); | |
525 | if (!se) | |
526 | goto free_msg; | |
527 | ||
528 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
529 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
530 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) || | |
531 | nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len, | |
532 | evt_transaction->aid) || | |
533 | nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len, | |
534 | evt_transaction->params)) | |
535 | goto nla_put_failure; | |
536 | ||
537 | /* evt_transaction is no more used */ | |
538 | devm_kfree(&dev->dev, evt_transaction); | |
539 | ||
540 | genlmsg_end(msg, hdr); | |
541 | ||
542 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
543 | ||
544 | return 0; | |
545 | ||
546 | nla_put_failure: | |
547 | genlmsg_cancel(msg, hdr); | |
548 | free_msg: | |
549 | /* evt_transaction is no more used */ | |
550 | devm_kfree(&dev->dev, evt_transaction); | |
551 | nlmsg_free(msg); | |
552 | return -EMSGSIZE; | |
553 | } | |
554 | ||
9afec6d3 CR |
555 | int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx) |
556 | { | |
557 | struct nfc_se *se; | |
558 | struct sk_buff *msg; | |
559 | void *hdr; | |
560 | ||
561 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
562 | if (!msg) | |
563 | return -ENOMEM; | |
564 | ||
565 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
566 | NFC_EVENT_SE_CONNECTIVITY); | |
567 | if (!hdr) | |
568 | goto free_msg; | |
569 | ||
570 | se = nfc_find_se(dev, se_idx); | |
571 | if (!se) | |
572 | goto free_msg; | |
573 | ||
574 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
575 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
576 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
577 | goto nla_put_failure; | |
578 | ||
579 | genlmsg_end(msg, hdr); | |
580 | ||
581 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
582 | ||
583 | return 0; | |
584 | ||
585 | nla_put_failure: | |
586 | genlmsg_cancel(msg, hdr); | |
587 | free_msg: | |
588 | nlmsg_free(msg); | |
589 | return -EMSGSIZE; | |
590 | } | |
591 | ||
4d12b8b1 | 592 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 593 | u32 portid, u32 seq, |
0a40acb2 SO |
594 | struct netlink_callback *cb, |
595 | int flags) | |
4d12b8b1 LRV |
596 | { |
597 | void *hdr; | |
598 | ||
15e47304 | 599 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 600 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
601 | if (!hdr) |
602 | return -EMSGSIZE; | |
603 | ||
604 | if (cb) | |
605 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
606 | ||
1e6428d8 DM |
607 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
608 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
609 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
7ad39395 TE |
610 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || |
611 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
1e6428d8 | 612 | goto nla_put_failure; |
4d12b8b1 | 613 | |
053c095a JB |
614 | genlmsg_end(msg, hdr); |
615 | return 0; | |
4d12b8b1 LRV |
616 | |
617 | nla_put_failure: | |
618 | genlmsg_cancel(msg, hdr); | |
619 | return -EMSGSIZE; | |
620 | } | |
621 | ||
622 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 623 | struct netlink_callback *cb) |
4d12b8b1 LRV |
624 | { |
625 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
626 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
627 | bool first_call = false; | |
628 | ||
4d12b8b1 LRV |
629 | if (!iter) { |
630 | first_call = true; | |
631 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
632 | if (!iter) | |
633 | return -ENOMEM; | |
634 | cb->args[0] = (long) iter; | |
635 | } | |
636 | ||
637 | mutex_lock(&nfc_devlist_mutex); | |
638 | ||
639 | cb->seq = nfc_devlist_generation; | |
640 | ||
641 | if (first_call) { | |
642 | nfc_device_iter_init(iter); | |
643 | dev = nfc_device_iter_next(iter); | |
644 | } | |
645 | ||
646 | while (dev) { | |
647 | int rc; | |
648 | ||
15e47304 | 649 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 650 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
651 | if (rc < 0) |
652 | break; | |
653 | ||
654 | dev = nfc_device_iter_next(iter); | |
655 | } | |
656 | ||
657 | mutex_unlock(&nfc_devlist_mutex); | |
658 | ||
659 | cb->args[1] = (long) dev; | |
660 | ||
661 | return skb->len; | |
662 | } | |
663 | ||
664 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
665 | { | |
666 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
667 | ||
4d12b8b1 LRV |
668 | nfc_device_iter_exit(iter); |
669 | kfree(iter); | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
1ed28f61 | 674 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 675 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
676 | { |
677 | struct sk_buff *msg; | |
678 | void *hdr; | |
679 | ||
680 | pr_debug("DEP link is up\n"); | |
681 | ||
58050fce | 682 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
683 | if (!msg) |
684 | return -ENOMEM; | |
685 | ||
0a40acb2 | 686 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
687 | if (!hdr) |
688 | goto free_msg; | |
689 | ||
1e6428d8 DM |
690 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
691 | goto nla_put_failure; | |
692 | if (rf_mode == NFC_RF_INITIATOR && | |
693 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
694 | goto nla_put_failure; | |
695 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
696 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
697 | goto nla_put_failure; | |
1ed28f61 SO |
698 | |
699 | genlmsg_end(msg, hdr); | |
700 | ||
701 | dev->dep_link_up = true; | |
702 | ||
2a94fe48 | 703 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
704 | |
705 | return 0; | |
706 | ||
707 | nla_put_failure: | |
708 | genlmsg_cancel(msg, hdr); | |
709 | free_msg: | |
710 | nlmsg_free(msg); | |
711 | return -EMSGSIZE; | |
712 | } | |
713 | ||
714 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
715 | { | |
716 | struct sk_buff *msg; | |
717 | void *hdr; | |
718 | ||
719 | pr_debug("DEP link is down\n"); | |
720 | ||
58050fce | 721 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
722 | if (!msg) |
723 | return -ENOMEM; | |
724 | ||
725 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 726 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
727 | if (!hdr) |
728 | goto free_msg; | |
729 | ||
1e6428d8 DM |
730 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
731 | goto nla_put_failure; | |
1ed28f61 SO |
732 | |
733 | genlmsg_end(msg, hdr); | |
734 | ||
2a94fe48 | 735 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
736 | |
737 | return 0; | |
738 | ||
739 | nla_put_failure: | |
740 | genlmsg_cancel(msg, hdr); | |
741 | free_msg: | |
742 | nlmsg_free(msg); | |
743 | return -EMSGSIZE; | |
744 | } | |
745 | ||
4d12b8b1 LRV |
746 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
747 | { | |
748 | struct sk_buff *msg; | |
749 | struct nfc_dev *dev; | |
750 | u32 idx; | |
751 | int rc = -ENOBUFS; | |
752 | ||
4d12b8b1 LRV |
753 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
754 | return -EINVAL; | |
755 | ||
756 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
757 | ||
758 | dev = nfc_get_device(idx); | |
759 | if (!dev) | |
760 | return -ENODEV; | |
761 | ||
58050fce | 762 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
763 | if (!msg) { |
764 | rc = -ENOMEM; | |
765 | goto out_putdev; | |
766 | } | |
767 | ||
15e47304 | 768 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 769 | NULL, 0); |
4d12b8b1 LRV |
770 | if (rc < 0) |
771 | goto out_free; | |
772 | ||
773 | nfc_put_device(dev); | |
774 | ||
775 | return genlmsg_reply(msg, info); | |
776 | ||
777 | out_free: | |
778 | nlmsg_free(msg); | |
779 | out_putdev: | |
780 | nfc_put_device(dev); | |
781 | return rc; | |
782 | } | |
783 | ||
8b3fe7b5 IE |
784 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
785 | { | |
786 | struct nfc_dev *dev; | |
787 | int rc; | |
788 | u32 idx; | |
789 | ||
8b3fe7b5 IE |
790 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
791 | return -EINVAL; | |
792 | ||
793 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
794 | ||
795 | dev = nfc_get_device(idx); | |
796 | if (!dev) | |
797 | return -ENODEV; | |
798 | ||
799 | rc = nfc_dev_up(dev); | |
800 | ||
801 | nfc_put_device(dev); | |
802 | return rc; | |
803 | } | |
804 | ||
805 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
806 | { | |
807 | struct nfc_dev *dev; | |
808 | int rc; | |
809 | u32 idx; | |
810 | ||
8b3fe7b5 IE |
811 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
812 | return -EINVAL; | |
813 | ||
814 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
815 | ||
816 | dev = nfc_get_device(idx); | |
817 | if (!dev) | |
818 | return -ENODEV; | |
819 | ||
820 | rc = nfc_dev_down(dev); | |
821 | ||
822 | nfc_put_device(dev); | |
823 | return rc; | |
824 | } | |
825 | ||
4d12b8b1 LRV |
826 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
827 | { | |
828 | struct nfc_dev *dev; | |
829 | int rc; | |
830 | u32 idx; | |
fe7c5800 | 831 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 832 | |
1ed28f61 SO |
833 | pr_debug("Poll start\n"); |
834 | ||
4d12b8b1 | 835 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
836 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
837 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 838 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
839 | return -EINVAL; |
840 | ||
841 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
842 | |
843 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
844 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
845 | |
846 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
847 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
848 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
849 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
850 | |
851 | dev = nfc_get_device(idx); | |
852 | if (!dev) | |
853 | return -ENODEV; | |
854 | ||
855 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
856 | ||
fe7c5800 | 857 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 858 | if (!rc) |
15e47304 | 859 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
860 | |
861 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
862 | ||
863 | nfc_put_device(dev); | |
864 | return rc; | |
865 | } | |
866 | ||
867 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
868 | { | |
869 | struct nfc_dev *dev; | |
870 | int rc; | |
871 | u32 idx; | |
872 | ||
4d12b8b1 LRV |
873 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
874 | return -EINVAL; | |
875 | ||
876 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
877 | ||
878 | dev = nfc_get_device(idx); | |
879 | if (!dev) | |
880 | return -ENODEV; | |
881 | ||
a831b913 SO |
882 | device_lock(&dev->dev); |
883 | ||
884 | if (!dev->polling) { | |
885 | device_unlock(&dev->dev); | |
886 | return -EINVAL; | |
887 | } | |
888 | ||
889 | device_unlock(&dev->dev); | |
890 | ||
4d12b8b1 LRV |
891 | mutex_lock(&dev->genl_data.genl_data_mutex); |
892 | ||
15e47304 | 893 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
894 | rc = -EBUSY; |
895 | goto out; | |
896 | } | |
897 | ||
898 | rc = nfc_stop_poll(dev); | |
15e47304 | 899 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
900 | |
901 | out: | |
902 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
903 | nfc_put_device(dev); | |
904 | return rc; | |
905 | } | |
906 | ||
3682f49f CR |
907 | static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info) |
908 | { | |
909 | struct nfc_dev *dev; | |
910 | u32 device_idx, target_idx, protocol; | |
911 | int rc; | |
912 | ||
913 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
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); | |
929 | return 0; | |
930 | } | |
931 | ||
1ed28f61 SO |
932 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
933 | { | |
934 | struct nfc_dev *dev; | |
935 | int rc, tgt_idx; | |
936 | u32 idx; | |
47807d3d | 937 | u8 comm; |
1ed28f61 SO |
938 | |
939 | pr_debug("DEP link up\n"); | |
940 | ||
941 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 942 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
943 | return -EINVAL; |
944 | ||
945 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
946 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
947 | tgt_idx = NFC_TARGET_IDX_ANY; | |
948 | else | |
949 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
950 | ||
951 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
952 | |
953 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
954 | return -EINVAL; | |
955 | ||
1ed28f61 SO |
956 | dev = nfc_get_device(idx); |
957 | if (!dev) | |
958 | return -ENODEV; | |
959 | ||
47807d3d | 960 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
961 | |
962 | nfc_put_device(dev); | |
963 | ||
964 | return rc; | |
965 | } | |
966 | ||
967 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
968 | { | |
969 | struct nfc_dev *dev; | |
970 | int rc; | |
971 | u32 idx; | |
972 | ||
973 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
974 | return -EINVAL; | |
975 | ||
976 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
977 | ||
978 | dev = nfc_get_device(idx); | |
979 | if (!dev) | |
980 | return -ENODEV; | |
981 | ||
982 | rc = nfc_dep_link_down(dev); | |
983 | ||
984 | nfc_put_device(dev); | |
985 | return rc; | |
986 | } | |
987 | ||
52feb444 TE |
988 | static int nfc_genl_send_params(struct sk_buff *msg, |
989 | struct nfc_llcp_local *local, | |
990 | u32 portid, u32 seq) | |
991 | { | |
992 | void *hdr; | |
993 | ||
994 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
995 | NFC_CMD_LLC_GET_PARAMS); | |
996 | if (!hdr) | |
997 | return -EMSGSIZE; | |
998 | ||
999 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
1000 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
1001 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
1002 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
1003 | goto nla_put_failure; | |
1004 | ||
053c095a JB |
1005 | genlmsg_end(msg, hdr); |
1006 | return 0; | |
52feb444 TE |
1007 | |
1008 | nla_put_failure: | |
1009 | ||
1010 | genlmsg_cancel(msg, hdr); | |
1011 | return -EMSGSIZE; | |
1012 | } | |
1013 | ||
1014 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
1015 | { | |
1016 | struct nfc_dev *dev; | |
1017 | struct nfc_llcp_local *local; | |
1018 | int rc = 0; | |
1019 | struct sk_buff *msg = NULL; | |
1020 | u32 idx; | |
1021 | ||
1022 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1023 | return -EINVAL; | |
1024 | ||
1025 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1026 | ||
1027 | dev = nfc_get_device(idx); | |
1028 | if (!dev) | |
1029 | return -ENODEV; | |
1030 | ||
1031 | device_lock(&dev->dev); | |
1032 | ||
1033 | local = nfc_llcp_find_local(dev); | |
1034 | if (!local) { | |
1035 | rc = -ENODEV; | |
1036 | goto exit; | |
1037 | } | |
1038 | ||
1039 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1040 | if (!msg) { | |
1041 | rc = -ENOMEM; | |
1042 | goto exit; | |
1043 | } | |
1044 | ||
1045 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
1046 | ||
1047 | exit: | |
1048 | device_unlock(&dev->dev); | |
1049 | ||
1050 | nfc_put_device(dev); | |
1051 | ||
1052 | if (rc < 0) { | |
1053 | if (msg) | |
1054 | nlmsg_free(msg); | |
1055 | ||
1056 | return rc; | |
1057 | } | |
1058 | ||
1059 | return genlmsg_reply(msg, info); | |
1060 | } | |
1061 | ||
1062 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
1063 | { | |
1064 | struct nfc_dev *dev; | |
1065 | struct nfc_llcp_local *local; | |
1066 | u8 rw = 0; | |
1067 | u16 miux = 0; | |
1068 | u32 idx; | |
1069 | int rc = 0; | |
1070 | ||
1071 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1072 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
1073 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
1074 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
1075 | return -EINVAL; | |
1076 | ||
1077 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
1078 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
1079 | ||
1080 | if (rw > LLCP_MAX_RW) | |
1081 | return -EINVAL; | |
1082 | } | |
1083 | ||
1084 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
1085 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
1086 | ||
1087 | if (miux > LLCP_MAX_MIUX) | |
1088 | return -EINVAL; | |
1089 | } | |
1090 | ||
1091 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1092 | ||
1093 | dev = nfc_get_device(idx); | |
1094 | if (!dev) | |
1095 | return -ENODEV; | |
1096 | ||
1097 | device_lock(&dev->dev); | |
1098 | ||
1099 | local = nfc_llcp_find_local(dev); | |
1100 | if (!local) { | |
1101 | nfc_put_device(dev); | |
1102 | rc = -ENODEV; | |
1103 | goto exit; | |
1104 | } | |
1105 | ||
1106 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
1107 | if (dev->dep_link_up) { | |
1108 | rc = -EINPROGRESS; | |
1109 | goto exit; | |
1110 | } | |
1111 | ||
1112 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
1113 | } | |
1114 | ||
1115 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
1116 | local->rw = rw; | |
1117 | ||
1118 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
1119 | local->miux = cpu_to_be16(miux); | |
1120 | ||
1121 | exit: | |
1122 | device_unlock(&dev->dev); | |
1123 | ||
1124 | nfc_put_device(dev); | |
1125 | ||
1126 | return rc; | |
1127 | } | |
1128 | ||
d9b8d8e1 TE |
1129 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1130 | { | |
1131 | struct nfc_dev *dev; | |
1132 | struct nfc_llcp_local *local; | |
1133 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1134 | u32 idx; | |
1135 | u8 tid; | |
1136 | char *uri; | |
1137 | int rc = 0, rem; | |
1138 | size_t uri_len, tlvs_len; | |
1139 | struct hlist_head sdreq_list; | |
1140 | struct nfc_llcp_sdp_tlv *sdreq; | |
1141 | ||
1142 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1143 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1144 | return -EINVAL; | |
1145 | ||
1146 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1147 | ||
1148 | dev = nfc_get_device(idx); | |
9abebb8a JL |
1149 | if (!dev) |
1150 | return -ENODEV; | |
d9b8d8e1 TE |
1151 | |
1152 | device_lock(&dev->dev); | |
1153 | ||
1154 | if (dev->dep_link_up == false) { | |
1155 | rc = -ENOLINK; | |
1156 | goto exit; | |
1157 | } | |
1158 | ||
1159 | local = nfc_llcp_find_local(dev); | |
1160 | if (!local) { | |
1161 | nfc_put_device(dev); | |
1162 | rc = -ENODEV; | |
1163 | goto exit; | |
1164 | } | |
1165 | ||
1166 | INIT_HLIST_HEAD(&sdreq_list); | |
1167 | ||
1168 | tlvs_len = 0; | |
1169 | ||
1170 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
1171 | rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr, | |
1172 | nfc_sdp_genl_policy); | |
1173 | ||
1174 | if (rc != 0) { | |
1175 | rc = -EINVAL; | |
1176 | goto exit; | |
1177 | } | |
1178 | ||
1179 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1180 | continue; | |
1181 | ||
1182 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1183 | if (uri_len == 0) | |
1184 | continue; | |
1185 | ||
1186 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1187 | if (uri == NULL || *uri == 0) | |
1188 | continue; | |
1189 | ||
1190 | tid = local->sdreq_next_tid++; | |
1191 | ||
1192 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1193 | if (sdreq == NULL) { | |
1194 | rc = -ENOMEM; | |
1195 | goto exit; | |
1196 | } | |
1197 | ||
1198 | tlvs_len += sdreq->tlv_len; | |
1199 | ||
1200 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1201 | } | |
1202 | ||
1203 | if (hlist_empty(&sdreq_list)) { | |
1204 | rc = -EINVAL; | |
1205 | goto exit; | |
1206 | } | |
1207 | ||
1208 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1209 | exit: | |
1210 | device_unlock(&dev->dev); | |
1211 | ||
1212 | nfc_put_device(dev); | |
1213 | ||
1214 | return rc; | |
1215 | } | |
1216 | ||
9ea7187c | 1217 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1218 | { |
1219 | struct nfc_dev *dev; | |
1220 | int rc; | |
1221 | u32 idx; | |
1222 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1223 | ||
1224 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1225 | return -EINVAL; | |
1226 | ||
1227 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1228 | ||
1229 | dev = nfc_get_device(idx); | |
1230 | if (!dev) | |
1231 | return -ENODEV; | |
1232 | ||
1233 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1234 | sizeof(firmware_name)); | |
1235 | ||
9ea7187c | 1236 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1237 | |
1238 | nfc_put_device(dev); | |
1239 | return rc; | |
1240 | } | |
1241 | ||
352a5f5f EL |
1242 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1243 | u32 result) | |
9674da87 EL |
1244 | { |
1245 | struct sk_buff *msg; | |
1246 | void *hdr; | |
1247 | ||
1248 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1249 | if (!msg) | |
1250 | return -ENOMEM; | |
1251 | ||
1252 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1253 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1254 | if (!hdr) |
1255 | goto free_msg; | |
1256 | ||
1257 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1258 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1259 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1260 | goto nla_put_failure; | |
1261 | ||
1262 | genlmsg_end(msg, hdr); | |
1263 | ||
2a94fe48 | 1264 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da87 EL |
1265 | |
1266 | return 0; | |
1267 | ||
1268 | nla_put_failure: | |
1269 | genlmsg_cancel(msg, hdr); | |
1270 | free_msg: | |
1271 | nlmsg_free(msg); | |
1272 | return -EMSGSIZE; | |
1273 | } | |
1274 | ||
be085653 SO |
1275 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1276 | { | |
1277 | struct nfc_dev *dev; | |
1278 | int rc; | |
1279 | u32 idx, se_idx; | |
1280 | ||
1281 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1282 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1283 | return -EINVAL; | |
1284 | ||
1285 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1286 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1287 | ||
1288 | dev = nfc_get_device(idx); | |
1289 | if (!dev) | |
1290 | return -ENODEV; | |
1291 | ||
1292 | rc = nfc_enable_se(dev, se_idx); | |
1293 | ||
1294 | nfc_put_device(dev); | |
1295 | return rc; | |
1296 | } | |
1297 | ||
1298 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1299 | { | |
1300 | struct nfc_dev *dev; | |
1301 | int rc; | |
1302 | u32 idx, se_idx; | |
1303 | ||
1304 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1305 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1306 | return -EINVAL; | |
1307 | ||
1308 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1309 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1310 | ||
1311 | dev = nfc_get_device(idx); | |
1312 | if (!dev) | |
1313 | return -ENODEV; | |
1314 | ||
1315 | rc = nfc_disable_se(dev, se_idx); | |
1316 | ||
1317 | nfc_put_device(dev); | |
1318 | return rc; | |
1319 | } | |
1320 | ||
ac22ac46 SO |
1321 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1322 | u32 portid, u32 seq, | |
1323 | struct netlink_callback *cb, | |
1324 | int flags) | |
1325 | { | |
1326 | void *hdr; | |
1327 | struct nfc_se *se, *n; | |
1328 | ||
1329 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1330 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1331 | NFC_CMD_GET_SE); | |
1332 | if (!hdr) | |
1333 | goto nla_put_failure; | |
1334 | ||
1335 | if (cb) | |
1336 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
1337 | ||
1338 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1339 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1340 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1341 | goto nla_put_failure; | |
1342 | ||
053c095a | 1343 | genlmsg_end(msg, hdr); |
ac22ac46 SO |
1344 | } |
1345 | ||
1346 | return 0; | |
1347 | ||
1348 | nla_put_failure: | |
1349 | genlmsg_cancel(msg, hdr); | |
1350 | return -EMSGSIZE; | |
1351 | } | |
1352 | ||
1353 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1354 | struct netlink_callback *cb) | |
1355 | { | |
1356 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1357 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1358 | bool first_call = false; | |
1359 | ||
1360 | if (!iter) { | |
1361 | first_call = true; | |
1362 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1363 | if (!iter) | |
1364 | return -ENOMEM; | |
1365 | cb->args[0] = (long) iter; | |
1366 | } | |
1367 | ||
1368 | mutex_lock(&nfc_devlist_mutex); | |
1369 | ||
1370 | cb->seq = nfc_devlist_generation; | |
1371 | ||
1372 | if (first_call) { | |
1373 | nfc_device_iter_init(iter); | |
1374 | dev = nfc_device_iter_next(iter); | |
1375 | } | |
1376 | ||
1377 | while (dev) { | |
1378 | int rc; | |
1379 | ||
1380 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1381 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1382 | if (rc < 0) | |
1383 | break; | |
1384 | ||
1385 | dev = nfc_device_iter_next(iter); | |
1386 | } | |
1387 | ||
1388 | mutex_unlock(&nfc_devlist_mutex); | |
1389 | ||
1390 | cb->args[1] = (long) dev; | |
1391 | ||
1392 | return skb->len; | |
1393 | } | |
1394 | ||
1395 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1396 | { | |
1397 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1398 | ||
1399 | nfc_device_iter_exit(iter); | |
1400 | kfree(iter); | |
1401 | ||
1402 | return 0; | |
1403 | } | |
1404 | ||
cd96db6f CR |
1405 | static int nfc_se_io(struct nfc_dev *dev, u32 se_idx, |
1406 | u8 *apdu, size_t apdu_length, | |
1407 | se_io_cb_t cb, void *cb_context) | |
1408 | { | |
1409 | struct nfc_se *se; | |
1410 | int rc; | |
1411 | ||
1412 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
1413 | ||
1414 | device_lock(&dev->dev); | |
1415 | ||
1416 | if (!device_is_registered(&dev->dev)) { | |
1417 | rc = -ENODEV; | |
1418 | goto error; | |
1419 | } | |
1420 | ||
1421 | if (!dev->dev_up) { | |
1422 | rc = -ENODEV; | |
1423 | goto error; | |
1424 | } | |
1425 | ||
1426 | if (!dev->ops->se_io) { | |
1427 | rc = -EOPNOTSUPP; | |
1428 | goto error; | |
1429 | } | |
1430 | ||
1431 | se = nfc_find_se(dev, se_idx); | |
1432 | if (!se) { | |
1433 | rc = -EINVAL; | |
1434 | goto error; | |
1435 | } | |
1436 | ||
1437 | if (se->state != NFC_SE_ENABLED) { | |
1438 | rc = -ENODEV; | |
1439 | goto error; | |
1440 | } | |
1441 | ||
1442 | rc = dev->ops->se_io(dev, se_idx, apdu, | |
1443 | apdu_length, cb, cb_context); | |
1444 | ||
1445 | error: | |
1446 | device_unlock(&dev->dev); | |
1447 | return rc; | |
1448 | } | |
1449 | ||
5ce3f32b SO |
1450 | struct se_io_ctx { |
1451 | u32 dev_idx; | |
1452 | u32 se_idx; | |
1453 | }; | |
1454 | ||
ddc1a70b | 1455 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1456 | { |
1457 | struct se_io_ctx *ctx = context; | |
1458 | struct sk_buff *msg; | |
1459 | void *hdr; | |
1460 | ||
1461 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1462 | if (!msg) { | |
1463 | kfree(ctx); | |
1464 | return; | |
1465 | } | |
1466 | ||
1467 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1468 | NFC_CMD_SE_IO); | |
1469 | if (!hdr) | |
1470 | goto free_msg; | |
1471 | ||
1472 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1473 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1474 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1475 | goto nla_put_failure; | |
1476 | ||
1477 | genlmsg_end(msg, hdr); | |
1478 | ||
2a94fe48 | 1479 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1480 | |
1481 | kfree(ctx); | |
1482 | ||
1483 | return; | |
1484 | ||
1485 | nla_put_failure: | |
1486 | genlmsg_cancel(msg, hdr); | |
1487 | free_msg: | |
1488 | nlmsg_free(msg); | |
1489 | kfree(ctx); | |
1490 | ||
1491 | return; | |
1492 | } | |
1493 | ||
1494 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1495 | { | |
1496 | struct nfc_dev *dev; | |
1497 | struct se_io_ctx *ctx; | |
1498 | u32 dev_idx, se_idx; | |
1499 | u8 *apdu; | |
1500 | size_t apdu_len; | |
1501 | ||
1502 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1503 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1504 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1505 | return -EINVAL; | |
1506 | ||
1507 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1508 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1509 | ||
1510 | dev = nfc_get_device(dev_idx); | |
1511 | if (!dev) | |
1512 | return -ENODEV; | |
1513 | ||
1514 | if (!dev->ops || !dev->ops->se_io) | |
1515 | return -ENOTSUPP; | |
1516 | ||
1517 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
1518 | if (apdu_len == 0) | |
1519 | return -EINVAL; | |
1520 | ||
1521 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
1522 | if (!apdu) | |
1523 | return -EINVAL; | |
1524 | ||
1525 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
1526 | if (!ctx) | |
1527 | return -ENOMEM; | |
1528 | ||
1529 | ctx->dev_idx = dev_idx; | |
1530 | ctx->se_idx = se_idx; | |
1531 | ||
cd96db6f | 1532 | return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); |
5ce3f32b SO |
1533 | } |
1534 | ||
9e58095f SO |
1535 | static int nfc_genl_vendor_cmd(struct sk_buff *skb, |
1536 | struct genl_info *info) | |
1537 | { | |
1538 | struct nfc_dev *dev; | |
1539 | struct nfc_vendor_cmd *cmd; | |
1540 | u32 dev_idx, vid, subcmd; | |
1541 | u8 *data; | |
1542 | size_t data_len; | |
29e76924 | 1543 | int i, err; |
9e58095f SO |
1544 | |
1545 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1546 | !info->attrs[NFC_ATTR_VENDOR_ID] || | |
1547 | !info->attrs[NFC_ATTR_VENDOR_SUBCMD]) | |
1548 | return -EINVAL; | |
1549 | ||
1550 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1551 | vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]); | |
1552 | subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]); | |
1553 | ||
1554 | dev = nfc_get_device(dev_idx); | |
1555 | if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds) | |
1556 | return -ENODEV; | |
1557 | ||
fe202fe9 CR |
1558 | if (info->attrs[NFC_ATTR_VENDOR_DATA]) { |
1559 | data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]); | |
9e58095f SO |
1560 | data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]); |
1561 | if (data_len == 0) | |
1562 | return -EINVAL; | |
1563 | } else { | |
adca3c38 | 1564 | data = NULL; |
9e58095f SO |
1565 | data_len = 0; |
1566 | } | |
1567 | ||
1568 | for (i = 0; i < dev->n_vendor_cmds; i++) { | |
1569 | cmd = &dev->vendor_cmds[i]; | |
1570 | ||
1571 | if (cmd->vendor_id != vid || cmd->subcmd != subcmd) | |
1572 | continue; | |
1573 | ||
29e76924 CR |
1574 | dev->cur_cmd_info = info; |
1575 | err = cmd->doit(dev, data, data_len); | |
1576 | dev->cur_cmd_info = NULL; | |
1577 | return err; | |
9e58095f SO |
1578 | } |
1579 | ||
1580 | return -EOPNOTSUPP; | |
1581 | } | |
1582 | ||
29e76924 CR |
1583 | /* message building helper */ |
1584 | static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq, | |
1585 | int flags, u8 cmd) | |
1586 | { | |
1587 | /* since there is no private header just add the generic one */ | |
1588 | return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd); | |
1589 | } | |
1590 | ||
1591 | static struct sk_buff * | |
1592 | __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen, | |
1593 | u32 portid, u32 seq, | |
1594 | enum nfc_attrs attr, | |
1595 | u32 oui, u32 subcmd, gfp_t gfp) | |
1596 | { | |
1597 | struct sk_buff *skb; | |
1598 | void *hdr; | |
1599 | ||
1600 | skb = nlmsg_new(approxlen + 100, gfp); | |
1601 | if (!skb) | |
1602 | return NULL; | |
1603 | ||
1604 | hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR); | |
1605 | if (!hdr) { | |
1606 | kfree_skb(skb); | |
1607 | return NULL; | |
1608 | } | |
1609 | ||
1610 | if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
1611 | goto nla_put_failure; | |
1612 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui)) | |
1613 | goto nla_put_failure; | |
1614 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd)) | |
1615 | goto nla_put_failure; | |
1616 | ||
1617 | ((void **)skb->cb)[0] = dev; | |
1618 | ((void **)skb->cb)[1] = hdr; | |
1619 | ||
1620 | return skb; | |
1621 | ||
1622 | nla_put_failure: | |
1623 | kfree_skb(skb); | |
1624 | return NULL; | |
1625 | } | |
1626 | ||
1627 | struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev, | |
1628 | enum nfc_attrs attr, | |
1629 | u32 oui, u32 subcmd, | |
1630 | int approxlen) | |
1631 | { | |
1632 | if (WARN_ON(!dev->cur_cmd_info)) | |
1633 | return NULL; | |
1634 | ||
1635 | return __nfc_alloc_vendor_cmd_skb(dev, approxlen, | |
1636 | dev->cur_cmd_info->snd_portid, | |
1637 | dev->cur_cmd_info->snd_seq, attr, | |
1638 | oui, subcmd, GFP_KERNEL); | |
1639 | } | |
1640 | EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb); | |
1641 | ||
1642 | int nfc_vendor_cmd_reply(struct sk_buff *skb) | |
1643 | { | |
1644 | struct nfc_dev *dev = ((void **)skb->cb)[0]; | |
1645 | void *hdr = ((void **)skb->cb)[1]; | |
1646 | ||
1647 | /* clear CB data for netlink core to own from now on */ | |
1648 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1649 | ||
1650 | if (WARN_ON(!dev->cur_cmd_info)) { | |
1651 | kfree_skb(skb); | |
1652 | return -EINVAL; | |
1653 | } | |
1654 | ||
1655 | genlmsg_end(skb, hdr); | |
1656 | return genlmsg_reply(skb, dev->cur_cmd_info); | |
1657 | } | |
1658 | EXPORT_SYMBOL(nfc_vendor_cmd_reply); | |
1659 | ||
4534de83 | 1660 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1661 | { |
1662 | .cmd = NFC_CMD_GET_DEVICE, | |
1663 | .doit = nfc_genl_get_device, | |
1664 | .dumpit = nfc_genl_dump_devices, | |
1665 | .done = nfc_genl_dump_devices_done, | |
1666 | .policy = nfc_genl_policy, | |
8b3fe7b5 IE |
1667 | }, |
1668 | { | |
1669 | .cmd = NFC_CMD_DEV_UP, | |
1670 | .doit = nfc_genl_dev_up, | |
1671 | .policy = nfc_genl_policy, | |
1672 | }, | |
1673 | { | |
1674 | .cmd = NFC_CMD_DEV_DOWN, | |
1675 | .doit = nfc_genl_dev_down, | |
1676 | .policy = nfc_genl_policy, | |
4d12b8b1 LRV |
1677 | }, |
1678 | { | |
1679 | .cmd = NFC_CMD_START_POLL, | |
1680 | .doit = nfc_genl_start_poll, | |
1681 | .policy = nfc_genl_policy, | |
1682 | }, | |
1683 | { | |
1684 | .cmd = NFC_CMD_STOP_POLL, | |
1685 | .doit = nfc_genl_stop_poll, | |
1686 | .policy = nfc_genl_policy, | |
1687 | }, | |
1ed28f61 SO |
1688 | { |
1689 | .cmd = NFC_CMD_DEP_LINK_UP, | |
1690 | .doit = nfc_genl_dep_link_up, | |
1691 | .policy = nfc_genl_policy, | |
1692 | }, | |
1693 | { | |
1694 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
1695 | .doit = nfc_genl_dep_link_down, | |
1696 | .policy = nfc_genl_policy, | |
1697 | }, | |
4d12b8b1 LRV |
1698 | { |
1699 | .cmd = NFC_CMD_GET_TARGET, | |
1700 | .dumpit = nfc_genl_dump_targets, | |
1701 | .done = nfc_genl_dump_targets_done, | |
1702 | .policy = nfc_genl_policy, | |
1703 | }, | |
52feb444 TE |
1704 | { |
1705 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
1706 | .doit = nfc_genl_llc_get_params, | |
1707 | .policy = nfc_genl_policy, | |
1708 | }, | |
1709 | { | |
1710 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
1711 | .doit = nfc_genl_llc_set_params, | |
1712 | .policy = nfc_genl_policy, | |
1713 | }, | |
d9b8d8e1 TE |
1714 | { |
1715 | .cmd = NFC_CMD_LLC_SDREQ, | |
1716 | .doit = nfc_genl_llc_sdreq, | |
1717 | .policy = nfc_genl_policy, | |
1718 | }, | |
9674da87 | 1719 | { |
9ea7187c SO |
1720 | .cmd = NFC_CMD_FW_DOWNLOAD, |
1721 | .doit = nfc_genl_fw_download, | |
9674da87 EL |
1722 | .policy = nfc_genl_policy, |
1723 | }, | |
be085653 SO |
1724 | { |
1725 | .cmd = NFC_CMD_ENABLE_SE, | |
1726 | .doit = nfc_genl_enable_se, | |
1727 | .policy = nfc_genl_policy, | |
1728 | }, | |
1729 | { | |
1730 | .cmd = NFC_CMD_DISABLE_SE, | |
1731 | .doit = nfc_genl_disable_se, | |
1732 | .policy = nfc_genl_policy, | |
1733 | }, | |
ac22ac46 SO |
1734 | { |
1735 | .cmd = NFC_CMD_GET_SE, | |
1736 | .dumpit = nfc_genl_dump_ses, | |
1737 | .done = nfc_genl_dump_ses_done, | |
1738 | .policy = nfc_genl_policy, | |
1739 | }, | |
5ce3f32b SO |
1740 | { |
1741 | .cmd = NFC_CMD_SE_IO, | |
1742 | .doit = nfc_genl_se_io, | |
1743 | .policy = nfc_genl_policy, | |
1744 | }, | |
3682f49f CR |
1745 | { |
1746 | .cmd = NFC_CMD_ACTIVATE_TARGET, | |
1747 | .doit = nfc_genl_activate_target, | |
1748 | .policy = nfc_genl_policy, | |
1749 | }, | |
9e58095f SO |
1750 | { |
1751 | .cmd = NFC_CMD_VENDOR, | |
1752 | .doit = nfc_genl_vendor_cmd, | |
1753 | .policy = nfc_genl_policy, | |
1754 | }, | |
4d12b8b1 LRV |
1755 | }; |
1756 | ||
3c0cc8aa SJ |
1757 | |
1758 | struct urelease_work { | |
1759 | struct work_struct w; | |
65bc4f93 | 1760 | u32 portid; |
3c0cc8aa SJ |
1761 | }; |
1762 | ||
1763 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1764 | { |
3c0cc8aa | 1765 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1766 | struct class_dev_iter iter; |
1767 | struct nfc_dev *dev; | |
1768 | ||
c487606f | 1769 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1770 | |
3c0cc8aa | 1771 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1772 | |
1773 | nfc_device_iter_init(&iter); | |
1774 | dev = nfc_device_iter_next(&iter); | |
1775 | ||
1776 | while (dev) { | |
3c0cc8aa SJ |
1777 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1778 | ||
c487606f | 1779 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1780 | nfc_stop_poll(dev); |
15e47304 | 1781 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1782 | } |
3c0cc8aa SJ |
1783 | |
1784 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1785 | ||
4d12b8b1 LRV |
1786 | dev = nfc_device_iter_next(&iter); |
1787 | } | |
1788 | ||
1789 | nfc_device_iter_exit(&iter); | |
1790 | ||
3c0cc8aa SJ |
1791 | mutex_unlock(&nfc_devlist_mutex); |
1792 | ||
1793 | kfree(w); | |
1794 | } | |
1795 | ||
1796 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1797 | unsigned long event, void *ptr) | |
1798 | { | |
1799 | struct netlink_notify *n = ptr; | |
1800 | struct urelease_work *w; | |
1801 | ||
1802 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1803 | goto out; | |
1804 | ||
c487606f | 1805 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1806 | |
1807 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1808 | if (w) { | |
1809 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1810 | w->portid = n->portid; |
3c0cc8aa SJ |
1811 | schedule_work((struct work_struct *) w); |
1812 | } | |
1813 | ||
4d12b8b1 LRV |
1814 | out: |
1815 | return NOTIFY_DONE; | |
1816 | } | |
1817 | ||
1818 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1819 | { | |
15e47304 | 1820 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1821 | mutex_init(&genl_data->genl_data_mutex); |
1822 | } | |
1823 | ||
1824 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1825 | { | |
1826 | mutex_destroy(&genl_data->genl_data_mutex); | |
1827 | } | |
1828 | ||
1829 | static struct notifier_block nl_notifier = { | |
1830 | .notifier_call = nfc_genl_rcv_nl_event, | |
1831 | }; | |
1832 | ||
1833 | /** | |
1834 | * nfc_genl_init() - Initialize netlink interface | |
1835 | * | |
1836 | * This initialization function registers the nfc netlink family. | |
1837 | */ | |
1838 | int __init nfc_genl_init(void) | |
1839 | { | |
1840 | int rc; | |
1841 | ||
2a94fe48 JB |
1842 | rc = genl_register_family_with_ops_groups(&nfc_genl_family, |
1843 | nfc_genl_ops, | |
1844 | nfc_genl_mcgrps); | |
4d12b8b1 LRV |
1845 | if (rc) |
1846 | return rc; | |
1847 | ||
4d12b8b1 LRV |
1848 | netlink_register_notifier(&nl_notifier); |
1849 | ||
2a94fe48 | 1850 | return 0; |
4d12b8b1 LRV |
1851 | } |
1852 | ||
1853 | /** | |
1854 | * nfc_genl_exit() - Deinitialize netlink interface | |
1855 | * | |
1856 | * This exit function unregisters the nfc netlink family. | |
1857 | */ | |
1858 | void nfc_genl_exit(void) | |
1859 | { | |
1860 | netlink_unregister_notifier(&nl_notifier); | |
1861 | genl_unregister_family(&nfc_genl_family); | |
1862 | } |