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Commit | Line | Data |
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4d12b8b1 LRV |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
3 | * | |
4 | * Authors: | |
5 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> | |
6 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> | |
7 | * | |
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 | ||
489111e5 | 41 | static struct genl_family nfc_genl_family; |
4d12b8b1 LRV |
42 | static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = { |
43 | [NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 }, | |
44 | [NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING, | |
45 | .len = NFC_DEVICE_NAME_MAXSIZE }, | |
46 | [NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 }, | |
1ed28f61 SO |
47 | [NFC_ATTR_COMM_MODE] = { .type = NLA_U8 }, |
48 | [NFC_ATTR_RF_MODE] = { .type = NLA_U8 }, | |
c970a1ac | 49 | [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 }, |
fe7c5800 SO |
50 | [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 }, |
51 | [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 }, | |
8af362d1 TE |
52 | [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 }, |
53 | [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 }, | |
54 | [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 }, | |
d9b8d8e1 | 55 | [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED }, |
9674da87 EL |
56 | [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING, |
57 | .len = NFC_FIRMWARE_NAME_MAXSIZE }, | |
5ce3f32b | 58 | [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY }, |
29e76924 CR |
59 | [NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, |
60 | ||
d9b8d8e1 TE |
61 | }; |
62 | ||
63 | static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = { | |
3767558d KC |
64 | [NFC_SDP_ATTR_URI] = { .type = NLA_STRING, |
65 | .len = U8_MAX - 4 }, | |
d9b8d8e1 | 66 | [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 }, |
4d12b8b1 LRV |
67 | }; |
68 | ||
69 | static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target, | |
0a40acb2 | 70 | struct netlink_callback *cb, int flags) |
4d12b8b1 LRV |
71 | { |
72 | void *hdr; | |
73 | ||
15e47304 | 74 | hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
0a40acb2 | 75 | &nfc_genl_family, flags, NFC_CMD_GET_TARGET); |
4d12b8b1 LRV |
76 | if (!hdr) |
77 | return -EMSGSIZE; | |
78 | ||
0a833c29 | 79 | genl_dump_check_consistent(cb, hdr); |
4d12b8b1 | 80 | |
1e6428d8 DM |
81 | if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) || |
82 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) || | |
83 | nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) || | |
84 | nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res)) | |
85 | goto nla_put_failure; | |
86 | if (target->nfcid1_len > 0 && | |
87 | nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len, | |
88 | target->nfcid1)) | |
89 | goto nla_put_failure; | |
90 | if (target->sensb_res_len > 0 && | |
91 | nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len, | |
92 | target->sensb_res)) | |
93 | goto nla_put_failure; | |
94 | if (target->sensf_res_len > 0 && | |
95 | nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len, | |
96 | target->sensf_res)) | |
97 | goto nla_put_failure; | |
4d12b8b1 | 98 | |
f5f6872e MG |
99 | if (target->is_iso15693) { |
100 | if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID, | |
101 | target->iso15693_dsfid) || | |
102 | nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID, | |
103 | sizeof(target->iso15693_uid), target->iso15693_uid)) | |
104 | goto nla_put_failure; | |
105 | } | |
106 | ||
053c095a JB |
107 | genlmsg_end(msg, hdr); |
108 | return 0; | |
4d12b8b1 LRV |
109 | |
110 | nla_put_failure: | |
111 | genlmsg_cancel(msg, hdr); | |
112 | return -EMSGSIZE; | |
113 | } | |
114 | ||
115 | static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) | |
116 | { | |
c90c39da | 117 | struct nlattr **attrbuf = genl_family_attrbuf(&nfc_genl_family); |
4d12b8b1 LRV |
118 | struct nfc_dev *dev; |
119 | int rc; | |
120 | u32 idx; | |
121 | ||
122 | rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize, | |
fceb6435 JB |
123 | attrbuf, nfc_genl_family.maxattr, nfc_genl_policy, |
124 | NULL); | |
4d12b8b1 LRV |
125 | if (rc < 0) |
126 | return ERR_PTR(rc); | |
127 | ||
c90c39da | 128 | if (!attrbuf[NFC_ATTR_DEVICE_INDEX]) |
4d12b8b1 LRV |
129 | return ERR_PTR(-EINVAL); |
130 | ||
c90c39da | 131 | idx = nla_get_u32(attrbuf[NFC_ATTR_DEVICE_INDEX]); |
4d12b8b1 LRV |
132 | |
133 | dev = nfc_get_device(idx); | |
134 | if (!dev) | |
135 | return ERR_PTR(-ENODEV); | |
136 | ||
137 | return dev; | |
138 | } | |
139 | ||
140 | static int nfc_genl_dump_targets(struct sk_buff *skb, | |
0a40acb2 | 141 | struct netlink_callback *cb) |
4d12b8b1 LRV |
142 | { |
143 | int i = cb->args[0]; | |
144 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
145 | int rc; | |
146 | ||
4d12b8b1 LRV |
147 | if (!dev) { |
148 | dev = __get_device_from_cb(cb); | |
149 | if (IS_ERR(dev)) | |
150 | return PTR_ERR(dev); | |
151 | ||
152 | cb->args[1] = (long) dev; | |
153 | } | |
154 | ||
d4ccb132 | 155 | device_lock(&dev->dev); |
4d12b8b1 LRV |
156 | |
157 | cb->seq = dev->targets_generation; | |
158 | ||
159 | while (i < dev->n_targets) { | |
160 | rc = nfc_genl_send_target(skb, &dev->targets[i], cb, | |
0a40acb2 | 161 | NLM_F_MULTI); |
4d12b8b1 LRV |
162 | if (rc < 0) |
163 | break; | |
164 | ||
165 | i++; | |
166 | } | |
167 | ||
d4ccb132 | 168 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
169 | |
170 | cb->args[0] = i; | |
171 | ||
172 | return skb->len; | |
173 | } | |
174 | ||
175 | static int nfc_genl_dump_targets_done(struct netlink_callback *cb) | |
176 | { | |
177 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
178 | ||
4d12b8b1 LRV |
179 | if (dev) |
180 | nfc_put_device(dev); | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | int nfc_genl_targets_found(struct nfc_dev *dev) | |
186 | { | |
187 | struct sk_buff *msg; | |
188 | void *hdr; | |
189 | ||
15e47304 | 190 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 191 | |
58050fce | 192 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
4d12b8b1 LRV |
193 | if (!msg) |
194 | return -ENOMEM; | |
195 | ||
196 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 197 | NFC_EVENT_TARGETS_FOUND); |
4d12b8b1 LRV |
198 | if (!hdr) |
199 | goto free_msg; | |
200 | ||
1e6428d8 DM |
201 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
202 | goto nla_put_failure; | |
4d12b8b1 LRV |
203 | |
204 | genlmsg_end(msg, hdr); | |
205 | ||
2a94fe48 | 206 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
4d12b8b1 LRV |
207 | |
208 | nla_put_failure: | |
209 | genlmsg_cancel(msg, hdr); | |
210 | free_msg: | |
211 | nlmsg_free(msg); | |
212 | return -EMSGSIZE; | |
213 | } | |
214 | ||
8112a5c9 SO |
215 | int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) |
216 | { | |
217 | struct sk_buff *msg; | |
218 | void *hdr; | |
219 | ||
58050fce | 220 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
8112a5c9 SO |
221 | if (!msg) |
222 | return -ENOMEM; | |
223 | ||
224 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
225 | NFC_EVENT_TARGET_LOST); | |
226 | if (!hdr) | |
227 | goto free_msg; | |
228 | ||
59ef43e6 JL |
229 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
230 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
231 | goto nla_put_failure; | |
8112a5c9 SO |
232 | |
233 | genlmsg_end(msg, hdr); | |
234 | ||
2a94fe48 | 235 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
8112a5c9 SO |
236 | |
237 | return 0; | |
238 | ||
fc40a8c1 SO |
239 | nla_put_failure: |
240 | genlmsg_cancel(msg, hdr); | |
241 | free_msg: | |
242 | nlmsg_free(msg); | |
243 | return -EMSGSIZE; | |
244 | } | |
245 | ||
246 | int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) | |
247 | { | |
248 | struct sk_buff *msg; | |
249 | void *hdr; | |
250 | ||
58050fce | 251 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
252 | if (!msg) |
253 | return -ENOMEM; | |
254 | ||
255 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
256 | NFC_EVENT_TM_ACTIVATED); | |
257 | if (!hdr) | |
258 | goto free_msg; | |
259 | ||
260 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
261 | goto nla_put_failure; | |
262 | if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) | |
263 | goto nla_put_failure; | |
264 | ||
265 | genlmsg_end(msg, hdr); | |
266 | ||
2a94fe48 | 267 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
268 | |
269 | return 0; | |
270 | ||
271 | nla_put_failure: | |
272 | genlmsg_cancel(msg, hdr); | |
273 | free_msg: | |
274 | nlmsg_free(msg); | |
275 | return -EMSGSIZE; | |
276 | } | |
277 | ||
278 | int nfc_genl_tm_deactivated(struct nfc_dev *dev) | |
279 | { | |
280 | struct sk_buff *msg; | |
281 | void *hdr; | |
282 | ||
58050fce | 283 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
284 | if (!msg) |
285 | return -ENOMEM; | |
286 | ||
287 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
288 | NFC_EVENT_TM_DEACTIVATED); | |
289 | if (!hdr) | |
290 | goto free_msg; | |
291 | ||
292 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
293 | goto nla_put_failure; | |
294 | ||
295 | genlmsg_end(msg, hdr); | |
296 | ||
2a94fe48 | 297 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
298 | |
299 | return 0; | |
300 | ||
8112a5c9 SO |
301 | nla_put_failure: |
302 | genlmsg_cancel(msg, hdr); | |
303 | free_msg: | |
304 | nlmsg_free(msg); | |
305 | return -EMSGSIZE; | |
306 | } | |
307 | ||
85a2566d OH |
308 | static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg) |
309 | { | |
310 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || | |
311 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
312 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
313 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || | |
314 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
315 | return -1; | |
316 | return 0; | |
317 | } | |
318 | ||
4d12b8b1 LRV |
319 | int nfc_genl_device_added(struct nfc_dev *dev) |
320 | { | |
321 | struct sk_buff *msg; | |
322 | void *hdr; | |
323 | ||
58050fce | 324 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
325 | if (!msg) |
326 | return -ENOMEM; | |
327 | ||
328 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 329 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
330 | if (!hdr) |
331 | goto free_msg; | |
332 | ||
85a2566d | 333 | if (nfc_genl_setup_device_added(dev, msg)) |
1e6428d8 | 334 | goto nla_put_failure; |
4d12b8b1 LRV |
335 | |
336 | genlmsg_end(msg, hdr); | |
337 | ||
2a94fe48 | 338 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
339 | |
340 | return 0; | |
341 | ||
342 | nla_put_failure: | |
343 | genlmsg_cancel(msg, hdr); | |
344 | free_msg: | |
345 | nlmsg_free(msg); | |
346 | return -EMSGSIZE; | |
347 | } | |
348 | ||
349 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
350 | { | |
351 | struct sk_buff *msg; | |
352 | void *hdr; | |
353 | ||
58050fce | 354 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
355 | if (!msg) |
356 | return -ENOMEM; | |
357 | ||
358 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 359 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
360 | if (!hdr) |
361 | goto free_msg; | |
362 | ||
1e6428d8 DM |
363 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
364 | goto nla_put_failure; | |
4d12b8b1 LRV |
365 | |
366 | genlmsg_end(msg, hdr); | |
367 | ||
2a94fe48 | 368 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
369 | |
370 | return 0; | |
371 | ||
372 | nla_put_failure: | |
373 | genlmsg_cancel(msg, hdr); | |
374 | free_msg: | |
375 | nlmsg_free(msg); | |
376 | return -EMSGSIZE; | |
377 | } | |
378 | ||
d9b8d8e1 TE |
379 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
380 | { | |
381 | struct sk_buff *msg; | |
382 | struct nlattr *sdp_attr, *uri_attr; | |
383 | struct nfc_llcp_sdp_tlv *sdres; | |
384 | struct hlist_node *n; | |
385 | void *hdr; | |
386 | int rc = -EMSGSIZE; | |
387 | int i; | |
388 | ||
389 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
390 | if (!msg) | |
391 | return -ENOMEM; | |
392 | ||
393 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
394 | NFC_EVENT_LLC_SDRES); | |
395 | if (!hdr) | |
396 | goto free_msg; | |
397 | ||
398 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
399 | goto nla_put_failure; | |
400 | ||
401 | sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP); | |
402 | if (sdp_attr == NULL) { | |
403 | rc = -ENOMEM; | |
404 | goto nla_put_failure; | |
405 | } | |
406 | ||
407 | i = 1; | |
408 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
409 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
410 | ||
411 | uri_attr = nla_nest_start(msg, i++); | |
412 | if (uri_attr == NULL) { | |
413 | rc = -ENOMEM; | |
414 | goto nla_put_failure; | |
415 | } | |
416 | ||
417 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
418 | goto nla_put_failure; | |
419 | ||
420 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
421 | goto nla_put_failure; | |
422 | ||
423 | nla_nest_end(msg, uri_attr); | |
424 | ||
425 | hlist_del(&sdres->node); | |
426 | ||
427 | nfc_llcp_free_sdp_tlv(sdres); | |
428 | } | |
429 | ||
430 | nla_nest_end(msg, sdp_attr); | |
431 | ||
432 | genlmsg_end(msg, hdr); | |
433 | ||
2a94fe48 | 434 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
d9b8d8e1 TE |
435 | |
436 | nla_put_failure: | |
437 | genlmsg_cancel(msg, hdr); | |
438 | ||
439 | free_msg: | |
440 | nlmsg_free(msg); | |
441 | ||
442 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
443 | ||
444 | return rc; | |
445 | } | |
446 | ||
2757c372 SO |
447 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
448 | { | |
449 | struct sk_buff *msg; | |
450 | void *hdr; | |
451 | ||
452 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
453 | if (!msg) | |
454 | return -ENOMEM; | |
455 | ||
456 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
457 | NFC_EVENT_SE_ADDED); | |
458 | if (!hdr) | |
459 | goto free_msg; | |
460 | ||
461 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
462 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
463 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
464 | goto nla_put_failure; | |
465 | ||
466 | genlmsg_end(msg, hdr); | |
467 | ||
2a94fe48 | 468 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
469 | |
470 | return 0; | |
471 | ||
472 | nla_put_failure: | |
473 | genlmsg_cancel(msg, hdr); | |
474 | free_msg: | |
475 | nlmsg_free(msg); | |
476 | return -EMSGSIZE; | |
477 | } | |
478 | ||
479 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
480 | { | |
481 | struct sk_buff *msg; | |
482 | void *hdr; | |
483 | ||
484 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
485 | if (!msg) | |
486 | return -ENOMEM; | |
487 | ||
488 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
489 | NFC_EVENT_SE_REMOVED); | |
490 | if (!hdr) | |
491 | goto free_msg; | |
492 | ||
493 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
494 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
495 | goto nla_put_failure; | |
496 | ||
497 | genlmsg_end(msg, hdr); | |
498 | ||
2a94fe48 | 499 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
500 | |
501 | return 0; | |
502 | ||
503 | nla_put_failure: | |
504 | genlmsg_cancel(msg, hdr); | |
505 | free_msg: | |
506 | nlmsg_free(msg); | |
507 | return -EMSGSIZE; | |
508 | } | |
509 | ||
447b27c4 CR |
510 | int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx, |
511 | struct nfc_evt_transaction *evt_transaction) | |
512 | { | |
513 | struct nfc_se *se; | |
514 | struct sk_buff *msg; | |
515 | void *hdr; | |
516 | ||
517 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
518 | if (!msg) | |
519 | return -ENOMEM; | |
520 | ||
521 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
522 | NFC_EVENT_SE_TRANSACTION); | |
523 | if (!hdr) | |
524 | goto free_msg; | |
525 | ||
526 | se = nfc_find_se(dev, se_idx); | |
527 | if (!se) | |
528 | goto free_msg; | |
529 | ||
530 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
531 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
532 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) || | |
533 | nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len, | |
534 | evt_transaction->aid) || | |
535 | nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len, | |
536 | evt_transaction->params)) | |
537 | goto nla_put_failure; | |
538 | ||
539 | /* evt_transaction is no more used */ | |
540 | devm_kfree(&dev->dev, evt_transaction); | |
541 | ||
542 | genlmsg_end(msg, hdr); | |
543 | ||
544 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
545 | ||
546 | return 0; | |
547 | ||
548 | nla_put_failure: | |
549 | genlmsg_cancel(msg, hdr); | |
550 | free_msg: | |
551 | /* evt_transaction is no more used */ | |
552 | devm_kfree(&dev->dev, evt_transaction); | |
553 | nlmsg_free(msg); | |
554 | return -EMSGSIZE; | |
555 | } | |
556 | ||
9afec6d3 CR |
557 | int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx) |
558 | { | |
559 | struct nfc_se *se; | |
560 | struct sk_buff *msg; | |
561 | void *hdr; | |
562 | ||
563 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
564 | if (!msg) | |
565 | return -ENOMEM; | |
566 | ||
567 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
568 | NFC_EVENT_SE_CONNECTIVITY); | |
569 | if (!hdr) | |
570 | goto free_msg; | |
571 | ||
572 | se = nfc_find_se(dev, se_idx); | |
573 | if (!se) | |
574 | goto free_msg; | |
575 | ||
576 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
577 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
578 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
579 | goto nla_put_failure; | |
580 | ||
581 | genlmsg_end(msg, hdr); | |
582 | ||
583 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
584 | ||
585 | return 0; | |
586 | ||
587 | nla_put_failure: | |
588 | genlmsg_cancel(msg, hdr); | |
589 | free_msg: | |
590 | nlmsg_free(msg); | |
591 | return -EMSGSIZE; | |
592 | } | |
593 | ||
4d12b8b1 | 594 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 595 | u32 portid, u32 seq, |
0a40acb2 SO |
596 | struct netlink_callback *cb, |
597 | int flags) | |
4d12b8b1 LRV |
598 | { |
599 | void *hdr; | |
600 | ||
15e47304 | 601 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 602 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
603 | if (!hdr) |
604 | return -EMSGSIZE; | |
605 | ||
606 | if (cb) | |
0a833c29 | 607 | genl_dump_check_consistent(cb, hdr); |
4d12b8b1 | 608 | |
85a2566d | 609 | if (nfc_genl_setup_device_added(dev, msg)) |
1e6428d8 | 610 | goto nla_put_failure; |
4d12b8b1 | 611 | |
053c095a JB |
612 | genlmsg_end(msg, hdr); |
613 | return 0; | |
4d12b8b1 LRV |
614 | |
615 | nla_put_failure: | |
616 | genlmsg_cancel(msg, hdr); | |
617 | return -EMSGSIZE; | |
618 | } | |
619 | ||
620 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 621 | struct netlink_callback *cb) |
4d12b8b1 LRV |
622 | { |
623 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
624 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
625 | bool first_call = false; | |
626 | ||
4d12b8b1 LRV |
627 | if (!iter) { |
628 | first_call = true; | |
629 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
630 | if (!iter) | |
631 | return -ENOMEM; | |
632 | cb->args[0] = (long) iter; | |
633 | } | |
634 | ||
635 | mutex_lock(&nfc_devlist_mutex); | |
636 | ||
637 | cb->seq = nfc_devlist_generation; | |
638 | ||
639 | if (first_call) { | |
640 | nfc_device_iter_init(iter); | |
641 | dev = nfc_device_iter_next(iter); | |
642 | } | |
643 | ||
644 | while (dev) { | |
645 | int rc; | |
646 | ||
15e47304 | 647 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 648 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
649 | if (rc < 0) |
650 | break; | |
651 | ||
652 | dev = nfc_device_iter_next(iter); | |
653 | } | |
654 | ||
655 | mutex_unlock(&nfc_devlist_mutex); | |
656 | ||
657 | cb->args[1] = (long) dev; | |
658 | ||
659 | return skb->len; | |
660 | } | |
661 | ||
662 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
663 | { | |
664 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
665 | ||
4d12b8b1 LRV |
666 | nfc_device_iter_exit(iter); |
667 | kfree(iter); | |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
1ed28f61 | 672 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 673 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
674 | { |
675 | struct sk_buff *msg; | |
676 | void *hdr; | |
677 | ||
678 | pr_debug("DEP link is up\n"); | |
679 | ||
58050fce | 680 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
681 | if (!msg) |
682 | return -ENOMEM; | |
683 | ||
0a40acb2 | 684 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
685 | if (!hdr) |
686 | goto free_msg; | |
687 | ||
1e6428d8 DM |
688 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
689 | goto nla_put_failure; | |
690 | if (rf_mode == NFC_RF_INITIATOR && | |
691 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
692 | goto nla_put_failure; | |
693 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
694 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
695 | goto nla_put_failure; | |
1ed28f61 SO |
696 | |
697 | genlmsg_end(msg, hdr); | |
698 | ||
699 | dev->dep_link_up = true; | |
700 | ||
2a94fe48 | 701 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
702 | |
703 | return 0; | |
704 | ||
705 | nla_put_failure: | |
706 | genlmsg_cancel(msg, hdr); | |
707 | free_msg: | |
708 | nlmsg_free(msg); | |
709 | return -EMSGSIZE; | |
710 | } | |
711 | ||
712 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
713 | { | |
714 | struct sk_buff *msg; | |
715 | void *hdr; | |
716 | ||
717 | pr_debug("DEP link is down\n"); | |
718 | ||
58050fce | 719 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
720 | if (!msg) |
721 | return -ENOMEM; | |
722 | ||
723 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 724 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
725 | if (!hdr) |
726 | goto free_msg; | |
727 | ||
1e6428d8 DM |
728 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
729 | goto nla_put_failure; | |
1ed28f61 SO |
730 | |
731 | genlmsg_end(msg, hdr); | |
732 | ||
2a94fe48 | 733 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
734 | |
735 | return 0; | |
736 | ||
737 | nla_put_failure: | |
738 | genlmsg_cancel(msg, hdr); | |
739 | free_msg: | |
740 | nlmsg_free(msg); | |
741 | return -EMSGSIZE; | |
742 | } | |
743 | ||
4d12b8b1 LRV |
744 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
745 | { | |
746 | struct sk_buff *msg; | |
747 | struct nfc_dev *dev; | |
748 | u32 idx; | |
749 | int rc = -ENOBUFS; | |
750 | ||
4d12b8b1 LRV |
751 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
752 | return -EINVAL; | |
753 | ||
754 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
755 | ||
756 | dev = nfc_get_device(idx); | |
757 | if (!dev) | |
758 | return -ENODEV; | |
759 | ||
58050fce | 760 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
761 | if (!msg) { |
762 | rc = -ENOMEM; | |
763 | goto out_putdev; | |
764 | } | |
765 | ||
15e47304 | 766 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 767 | NULL, 0); |
4d12b8b1 LRV |
768 | if (rc < 0) |
769 | goto out_free; | |
770 | ||
771 | nfc_put_device(dev); | |
772 | ||
773 | return genlmsg_reply(msg, info); | |
774 | ||
775 | out_free: | |
776 | nlmsg_free(msg); | |
777 | out_putdev: | |
778 | nfc_put_device(dev); | |
779 | return rc; | |
780 | } | |
781 | ||
8b3fe7b5 IE |
782 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
783 | { | |
784 | struct nfc_dev *dev; | |
785 | int rc; | |
786 | u32 idx; | |
787 | ||
8b3fe7b5 IE |
788 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
789 | return -EINVAL; | |
790 | ||
791 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
792 | ||
793 | dev = nfc_get_device(idx); | |
794 | if (!dev) | |
795 | return -ENODEV; | |
796 | ||
797 | rc = nfc_dev_up(dev); | |
798 | ||
799 | nfc_put_device(dev); | |
800 | return rc; | |
801 | } | |
802 | ||
803 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
804 | { | |
805 | struct nfc_dev *dev; | |
806 | int rc; | |
807 | u32 idx; | |
808 | ||
8b3fe7b5 IE |
809 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
810 | return -EINVAL; | |
811 | ||
812 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
813 | ||
814 | dev = nfc_get_device(idx); | |
815 | if (!dev) | |
816 | return -ENODEV; | |
817 | ||
818 | rc = nfc_dev_down(dev); | |
819 | ||
820 | nfc_put_device(dev); | |
821 | return rc; | |
822 | } | |
823 | ||
4d12b8b1 LRV |
824 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
825 | { | |
826 | struct nfc_dev *dev; | |
827 | int rc; | |
828 | u32 idx; | |
fe7c5800 | 829 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 830 | |
1ed28f61 SO |
831 | pr_debug("Poll start\n"); |
832 | ||
4d12b8b1 | 833 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
834 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
835 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 836 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
837 | return -EINVAL; |
838 | ||
839 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
840 | |
841 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
842 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
843 | |
844 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
845 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
846 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
847 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
848 | |
849 | dev = nfc_get_device(idx); | |
850 | if (!dev) | |
851 | return -ENODEV; | |
852 | ||
853 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
854 | ||
fe7c5800 | 855 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 856 | if (!rc) |
15e47304 | 857 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
858 | |
859 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
860 | ||
861 | nfc_put_device(dev); | |
862 | return rc; | |
863 | } | |
864 | ||
865 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
866 | { | |
867 | struct nfc_dev *dev; | |
868 | int rc; | |
869 | u32 idx; | |
870 | ||
4d12b8b1 LRV |
871 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
872 | return -EINVAL; | |
873 | ||
874 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
875 | ||
876 | dev = nfc_get_device(idx); | |
877 | if (!dev) | |
878 | return -ENODEV; | |
879 | ||
a831b913 SO |
880 | device_lock(&dev->dev); |
881 | ||
882 | if (!dev->polling) { | |
883 | device_unlock(&dev->dev); | |
884 | return -EINVAL; | |
885 | } | |
886 | ||
887 | device_unlock(&dev->dev); | |
888 | ||
4d12b8b1 LRV |
889 | mutex_lock(&dev->genl_data.genl_data_mutex); |
890 | ||
15e47304 | 891 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
892 | rc = -EBUSY; |
893 | goto out; | |
894 | } | |
895 | ||
896 | rc = nfc_stop_poll(dev); | |
15e47304 | 897 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
898 | |
899 | out: | |
900 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
901 | nfc_put_device(dev); | |
902 | return rc; | |
903 | } | |
904 | ||
3682f49f CR |
905 | static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info) |
906 | { | |
907 | struct nfc_dev *dev; | |
908 | u32 device_idx, target_idx, protocol; | |
909 | int rc; | |
910 | ||
a0323b97 MJ |
911 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
912 | !info->attrs[NFC_ATTR_TARGET_INDEX] || | |
913 | !info->attrs[NFC_ATTR_PROTOCOLS]) | |
3682f49f CR |
914 | return -EINVAL; |
915 | ||
916 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
917 | ||
918 | dev = nfc_get_device(device_idx); | |
919 | if (!dev) | |
920 | return -ENODEV; | |
921 | ||
922 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
923 | protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
924 | ||
96d4581f | 925 | nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); |
3682f49f CR |
926 | rc = nfc_activate_target(dev, target_idx, protocol); |
927 | ||
928 | nfc_put_device(dev); | |
3267183c | 929 | return rc; |
3682f49f CR |
930 | } |
931 | ||
4d63adfe MG |
932 | static int nfc_genl_deactivate_target(struct sk_buff *skb, |
933 | struct genl_info *info) | |
934 | { | |
935 | struct nfc_dev *dev; | |
936 | u32 device_idx, target_idx; | |
937 | int rc; | |
938 | ||
939 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
940 | return -EINVAL; | |
941 | ||
942 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
943 | ||
944 | dev = nfc_get_device(device_idx); | |
945 | if (!dev) | |
946 | return -ENODEV; | |
947 | ||
948 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
949 | ||
950 | rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); | |
951 | ||
952 | nfc_put_device(dev); | |
953 | return rc; | |
954 | } | |
955 | ||
1ed28f61 SO |
956 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
957 | { | |
958 | struct nfc_dev *dev; | |
959 | int rc, tgt_idx; | |
960 | u32 idx; | |
47807d3d | 961 | u8 comm; |
1ed28f61 SO |
962 | |
963 | pr_debug("DEP link up\n"); | |
964 | ||
965 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 966 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
967 | return -EINVAL; |
968 | ||
969 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
970 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
971 | tgt_idx = NFC_TARGET_IDX_ANY; | |
972 | else | |
973 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
974 | ||
975 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
976 | |
977 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
978 | return -EINVAL; | |
979 | ||
1ed28f61 SO |
980 | dev = nfc_get_device(idx); |
981 | if (!dev) | |
982 | return -ENODEV; | |
983 | ||
47807d3d | 984 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
985 | |
986 | nfc_put_device(dev); | |
987 | ||
988 | return rc; | |
989 | } | |
990 | ||
991 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
992 | { | |
993 | struct nfc_dev *dev; | |
994 | int rc; | |
995 | u32 idx; | |
996 | ||
997 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
998 | return -EINVAL; | |
999 | ||
1000 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1001 | ||
1002 | dev = nfc_get_device(idx); | |
1003 | if (!dev) | |
1004 | return -ENODEV; | |
1005 | ||
1006 | rc = nfc_dep_link_down(dev); | |
1007 | ||
1008 | nfc_put_device(dev); | |
1009 | return rc; | |
1010 | } | |
1011 | ||
52feb444 TE |
1012 | static int nfc_genl_send_params(struct sk_buff *msg, |
1013 | struct nfc_llcp_local *local, | |
1014 | u32 portid, u32 seq) | |
1015 | { | |
1016 | void *hdr; | |
1017 | ||
1018 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
1019 | NFC_CMD_LLC_GET_PARAMS); | |
1020 | if (!hdr) | |
1021 | return -EMSGSIZE; | |
1022 | ||
1023 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
1024 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
1025 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
1026 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
1027 | goto nla_put_failure; | |
1028 | ||
053c095a JB |
1029 | genlmsg_end(msg, hdr); |
1030 | return 0; | |
52feb444 TE |
1031 | |
1032 | nla_put_failure: | |
1033 | ||
1034 | genlmsg_cancel(msg, hdr); | |
1035 | return -EMSGSIZE; | |
1036 | } | |
1037 | ||
1038 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
1039 | { | |
1040 | struct nfc_dev *dev; | |
1041 | struct nfc_llcp_local *local; | |
1042 | int rc = 0; | |
1043 | struct sk_buff *msg = NULL; | |
1044 | u32 idx; | |
1045 | ||
1046 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1047 | return -EINVAL; | |
1048 | ||
1049 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1050 | ||
1051 | dev = nfc_get_device(idx); | |
1052 | if (!dev) | |
1053 | return -ENODEV; | |
1054 | ||
1055 | device_lock(&dev->dev); | |
1056 | ||
1057 | local = nfc_llcp_find_local(dev); | |
1058 | if (!local) { | |
1059 | rc = -ENODEV; | |
1060 | goto exit; | |
1061 | } | |
1062 | ||
1063 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1064 | if (!msg) { | |
1065 | rc = -ENOMEM; | |
1066 | goto exit; | |
1067 | } | |
1068 | ||
1069 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
1070 | ||
1071 | exit: | |
1072 | device_unlock(&dev->dev); | |
1073 | ||
1074 | nfc_put_device(dev); | |
1075 | ||
1076 | if (rc < 0) { | |
1077 | if (msg) | |
1078 | nlmsg_free(msg); | |
1079 | ||
1080 | return rc; | |
1081 | } | |
1082 | ||
1083 | return genlmsg_reply(msg, info); | |
1084 | } | |
1085 | ||
1086 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
1087 | { | |
1088 | struct nfc_dev *dev; | |
1089 | struct nfc_llcp_local *local; | |
1090 | u8 rw = 0; | |
1091 | u16 miux = 0; | |
1092 | u32 idx; | |
1093 | int rc = 0; | |
1094 | ||
1095 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1096 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
1097 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
1098 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
1099 | return -EINVAL; | |
1100 | ||
1101 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
1102 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
1103 | ||
1104 | if (rw > LLCP_MAX_RW) | |
1105 | return -EINVAL; | |
1106 | } | |
1107 | ||
1108 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
1109 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
1110 | ||
1111 | if (miux > LLCP_MAX_MIUX) | |
1112 | return -EINVAL; | |
1113 | } | |
1114 | ||
1115 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1116 | ||
1117 | dev = nfc_get_device(idx); | |
1118 | if (!dev) | |
1119 | return -ENODEV; | |
1120 | ||
1121 | device_lock(&dev->dev); | |
1122 | ||
1123 | local = nfc_llcp_find_local(dev); | |
1124 | if (!local) { | |
1125 | nfc_put_device(dev); | |
1126 | rc = -ENODEV; | |
1127 | goto exit; | |
1128 | } | |
1129 | ||
1130 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
1131 | if (dev->dep_link_up) { | |
1132 | rc = -EINPROGRESS; | |
1133 | goto exit; | |
1134 | } | |
1135 | ||
1136 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
1137 | } | |
1138 | ||
1139 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
1140 | local->rw = rw; | |
1141 | ||
1142 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
1143 | local->miux = cpu_to_be16(miux); | |
1144 | ||
1145 | exit: | |
1146 | device_unlock(&dev->dev); | |
1147 | ||
1148 | nfc_put_device(dev); | |
1149 | ||
1150 | return rc; | |
1151 | } | |
1152 | ||
d9b8d8e1 TE |
1153 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1154 | { | |
1155 | struct nfc_dev *dev; | |
1156 | struct nfc_llcp_local *local; | |
1157 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1158 | u32 idx; | |
1159 | u8 tid; | |
1160 | char *uri; | |
1161 | int rc = 0, rem; | |
1162 | size_t uri_len, tlvs_len; | |
1163 | struct hlist_head sdreq_list; | |
1164 | struct nfc_llcp_sdp_tlv *sdreq; | |
1165 | ||
1166 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1167 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1168 | return -EINVAL; | |
1169 | ||
1170 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1171 | ||
1172 | dev = nfc_get_device(idx); | |
9abebb8a JL |
1173 | if (!dev) |
1174 | return -ENODEV; | |
d9b8d8e1 TE |
1175 | |
1176 | device_lock(&dev->dev); | |
1177 | ||
1178 | if (dev->dep_link_up == false) { | |
1179 | rc = -ENOLINK; | |
1180 | goto exit; | |
1181 | } | |
1182 | ||
1183 | local = nfc_llcp_find_local(dev); | |
1184 | if (!local) { | |
1185 | nfc_put_device(dev); | |
1186 | rc = -ENODEV; | |
1187 | goto exit; | |
1188 | } | |
1189 | ||
1190 | INIT_HLIST_HEAD(&sdreq_list); | |
1191 | ||
1192 | tlvs_len = 0; | |
1193 | ||
1194 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
1195 | rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr, | |
fe52145f | 1196 | nfc_sdp_genl_policy, info->extack); |
d9b8d8e1 TE |
1197 | |
1198 | if (rc != 0) { | |
1199 | rc = -EINVAL; | |
1200 | goto exit; | |
1201 | } | |
1202 | ||
1203 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1204 | continue; | |
1205 | ||
1206 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1207 | if (uri_len == 0) | |
1208 | continue; | |
1209 | ||
1210 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1211 | if (uri == NULL || *uri == 0) | |
1212 | continue; | |
1213 | ||
1214 | tid = local->sdreq_next_tid++; | |
1215 | ||
1216 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1217 | if (sdreq == NULL) { | |
1218 | rc = -ENOMEM; | |
1219 | goto exit; | |
1220 | } | |
1221 | ||
1222 | tlvs_len += sdreq->tlv_len; | |
1223 | ||
1224 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1225 | } | |
1226 | ||
1227 | if (hlist_empty(&sdreq_list)) { | |
1228 | rc = -EINVAL; | |
1229 | goto exit; | |
1230 | } | |
1231 | ||
1232 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1233 | exit: | |
1234 | device_unlock(&dev->dev); | |
1235 | ||
1236 | nfc_put_device(dev); | |
1237 | ||
1238 | return rc; | |
1239 | } | |
1240 | ||
9ea7187c | 1241 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1242 | { |
1243 | struct nfc_dev *dev; | |
1244 | int rc; | |
1245 | u32 idx; | |
1246 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1247 | ||
1248 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1249 | return -EINVAL; | |
1250 | ||
1251 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1252 | ||
1253 | dev = nfc_get_device(idx); | |
1254 | if (!dev) | |
1255 | return -ENODEV; | |
1256 | ||
1257 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1258 | sizeof(firmware_name)); | |
1259 | ||
9ea7187c | 1260 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1261 | |
1262 | nfc_put_device(dev); | |
1263 | return rc; | |
1264 | } | |
1265 | ||
352a5f5f EL |
1266 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1267 | u32 result) | |
9674da87 EL |
1268 | { |
1269 | struct sk_buff *msg; | |
1270 | void *hdr; | |
1271 | ||
1272 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1273 | if (!msg) | |
1274 | return -ENOMEM; | |
1275 | ||
1276 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1277 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1278 | if (!hdr) |
1279 | goto free_msg; | |
1280 | ||
1281 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1282 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1283 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1284 | goto nla_put_failure; | |
1285 | ||
1286 | genlmsg_end(msg, hdr); | |
1287 | ||
2a94fe48 | 1288 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da87 EL |
1289 | |
1290 | return 0; | |
1291 | ||
1292 | nla_put_failure: | |
1293 | genlmsg_cancel(msg, hdr); | |
1294 | free_msg: | |
1295 | nlmsg_free(msg); | |
1296 | return -EMSGSIZE; | |
1297 | } | |
1298 | ||
be085653 SO |
1299 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1300 | { | |
1301 | struct nfc_dev *dev; | |
1302 | int rc; | |
1303 | u32 idx, se_idx; | |
1304 | ||
1305 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1306 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1307 | return -EINVAL; | |
1308 | ||
1309 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1310 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1311 | ||
1312 | dev = nfc_get_device(idx); | |
1313 | if (!dev) | |
1314 | return -ENODEV; | |
1315 | ||
1316 | rc = nfc_enable_se(dev, se_idx); | |
1317 | ||
1318 | nfc_put_device(dev); | |
1319 | return rc; | |
1320 | } | |
1321 | ||
1322 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1323 | { | |
1324 | struct nfc_dev *dev; | |
1325 | int rc; | |
1326 | u32 idx, se_idx; | |
1327 | ||
1328 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1329 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1330 | return -EINVAL; | |
1331 | ||
1332 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1333 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1334 | ||
1335 | dev = nfc_get_device(idx); | |
1336 | if (!dev) | |
1337 | return -ENODEV; | |
1338 | ||
1339 | rc = nfc_disable_se(dev, se_idx); | |
1340 | ||
1341 | nfc_put_device(dev); | |
1342 | return rc; | |
1343 | } | |
1344 | ||
ac22ac46 SO |
1345 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1346 | u32 portid, u32 seq, | |
1347 | struct netlink_callback *cb, | |
1348 | int flags) | |
1349 | { | |
1350 | void *hdr; | |
1351 | struct nfc_se *se, *n; | |
1352 | ||
1353 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1354 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1355 | NFC_CMD_GET_SE); | |
1356 | if (!hdr) | |
1357 | goto nla_put_failure; | |
1358 | ||
1359 | if (cb) | |
0a833c29 | 1360 | genl_dump_check_consistent(cb, hdr); |
ac22ac46 SO |
1361 | |
1362 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1363 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1364 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1365 | goto nla_put_failure; | |
1366 | ||
053c095a | 1367 | genlmsg_end(msg, hdr); |
ac22ac46 SO |
1368 | } |
1369 | ||
1370 | return 0; | |
1371 | ||
1372 | nla_put_failure: | |
1373 | genlmsg_cancel(msg, hdr); | |
1374 | return -EMSGSIZE; | |
1375 | } | |
1376 | ||
1377 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1378 | struct netlink_callback *cb) | |
1379 | { | |
1380 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1381 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1382 | bool first_call = false; | |
1383 | ||
1384 | if (!iter) { | |
1385 | first_call = true; | |
1386 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1387 | if (!iter) | |
1388 | return -ENOMEM; | |
1389 | cb->args[0] = (long) iter; | |
1390 | } | |
1391 | ||
1392 | mutex_lock(&nfc_devlist_mutex); | |
1393 | ||
1394 | cb->seq = nfc_devlist_generation; | |
1395 | ||
1396 | if (first_call) { | |
1397 | nfc_device_iter_init(iter); | |
1398 | dev = nfc_device_iter_next(iter); | |
1399 | } | |
1400 | ||
1401 | while (dev) { | |
1402 | int rc; | |
1403 | ||
1404 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1405 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1406 | if (rc < 0) | |
1407 | break; | |
1408 | ||
1409 | dev = nfc_device_iter_next(iter); | |
1410 | } | |
1411 | ||
1412 | mutex_unlock(&nfc_devlist_mutex); | |
1413 | ||
1414 | cb->args[1] = (long) dev; | |
1415 | ||
1416 | return skb->len; | |
1417 | } | |
1418 | ||
1419 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1420 | { | |
1421 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1422 | ||
1423 | nfc_device_iter_exit(iter); | |
1424 | kfree(iter); | |
1425 | ||
1426 | return 0; | |
1427 | } | |
1428 | ||
cd96db6f CR |
1429 | static int nfc_se_io(struct nfc_dev *dev, u32 se_idx, |
1430 | u8 *apdu, size_t apdu_length, | |
1431 | se_io_cb_t cb, void *cb_context) | |
1432 | { | |
1433 | struct nfc_se *se; | |
1434 | int rc; | |
1435 | ||
1436 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
1437 | ||
1438 | device_lock(&dev->dev); | |
1439 | ||
1440 | if (!device_is_registered(&dev->dev)) { | |
1441 | rc = -ENODEV; | |
1442 | goto error; | |
1443 | } | |
1444 | ||
1445 | if (!dev->dev_up) { | |
1446 | rc = -ENODEV; | |
1447 | goto error; | |
1448 | } | |
1449 | ||
1450 | if (!dev->ops->se_io) { | |
1451 | rc = -EOPNOTSUPP; | |
1452 | goto error; | |
1453 | } | |
1454 | ||
1455 | se = nfc_find_se(dev, se_idx); | |
1456 | if (!se) { | |
1457 | rc = -EINVAL; | |
1458 | goto error; | |
1459 | } | |
1460 | ||
1461 | if (se->state != NFC_SE_ENABLED) { | |
1462 | rc = -ENODEV; | |
1463 | goto error; | |
1464 | } | |
1465 | ||
1466 | rc = dev->ops->se_io(dev, se_idx, apdu, | |
1467 | apdu_length, cb, cb_context); | |
1468 | ||
1469 | error: | |
1470 | device_unlock(&dev->dev); | |
1471 | return rc; | |
1472 | } | |
1473 | ||
5ce3f32b SO |
1474 | struct se_io_ctx { |
1475 | u32 dev_idx; | |
1476 | u32 se_idx; | |
1477 | }; | |
1478 | ||
ddc1a70b | 1479 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1480 | { |
1481 | struct se_io_ctx *ctx = context; | |
1482 | struct sk_buff *msg; | |
1483 | void *hdr; | |
1484 | ||
1485 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1486 | if (!msg) { | |
1487 | kfree(ctx); | |
1488 | return; | |
1489 | } | |
1490 | ||
1491 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1492 | NFC_CMD_SE_IO); | |
1493 | if (!hdr) | |
1494 | goto free_msg; | |
1495 | ||
1496 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1497 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1498 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1499 | goto nla_put_failure; | |
1500 | ||
1501 | genlmsg_end(msg, hdr); | |
1502 | ||
2a94fe48 | 1503 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1504 | |
1505 | kfree(ctx); | |
1506 | ||
1507 | return; | |
1508 | ||
1509 | nla_put_failure: | |
1510 | genlmsg_cancel(msg, hdr); | |
1511 | free_msg: | |
1512 | nlmsg_free(msg); | |
1513 | kfree(ctx); | |
1514 | ||
1515 | return; | |
1516 | } | |
1517 | ||
1518 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1519 | { | |
1520 | struct nfc_dev *dev; | |
1521 | struct se_io_ctx *ctx; | |
1522 | u32 dev_idx, se_idx; | |
1523 | u8 *apdu; | |
1524 | size_t apdu_len; | |
1525 | ||
1526 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1527 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1528 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1529 | return -EINVAL; | |
1530 | ||
1531 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1532 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1533 | ||
1534 | dev = nfc_get_device(dev_idx); | |
1535 | if (!dev) | |
1536 | return -ENODEV; | |
1537 | ||
1538 | if (!dev->ops || !dev->ops->se_io) | |
1539 | return -ENOTSUPP; | |
1540 | ||
1541 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
1542 | if (apdu_len == 0) | |
1543 | return -EINVAL; | |
1544 | ||
1545 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
1546 | if (!apdu) | |
1547 | return -EINVAL; | |
1548 | ||
1549 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
1550 | if (!ctx) | |
1551 | return -ENOMEM; | |
1552 | ||
1553 | ctx->dev_idx = dev_idx; | |
1554 | ctx->se_idx = se_idx; | |
1555 | ||
cd96db6f | 1556 | return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); |
5ce3f32b SO |
1557 | } |
1558 | ||
9e58095f SO |
1559 | static int nfc_genl_vendor_cmd(struct sk_buff *skb, |
1560 | struct genl_info *info) | |
1561 | { | |
1562 | struct nfc_dev *dev; | |
1563 | struct nfc_vendor_cmd *cmd; | |
1564 | u32 dev_idx, vid, subcmd; | |
1565 | u8 *data; | |
1566 | size_t data_len; | |
29e76924 | 1567 | int i, err; |
9e58095f SO |
1568 | |
1569 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1570 | !info->attrs[NFC_ATTR_VENDOR_ID] || | |
1571 | !info->attrs[NFC_ATTR_VENDOR_SUBCMD]) | |
1572 | return -EINVAL; | |
1573 | ||
1574 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1575 | vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]); | |
1576 | subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]); | |
1577 | ||
1578 | dev = nfc_get_device(dev_idx); | |
1579 | if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds) | |
1580 | return -ENODEV; | |
1581 | ||
fe202fe9 CR |
1582 | if (info->attrs[NFC_ATTR_VENDOR_DATA]) { |
1583 | data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]); | |
9e58095f SO |
1584 | data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]); |
1585 | if (data_len == 0) | |
1586 | return -EINVAL; | |
1587 | } else { | |
adca3c38 | 1588 | data = NULL; |
9e58095f SO |
1589 | data_len = 0; |
1590 | } | |
1591 | ||
1592 | for (i = 0; i < dev->n_vendor_cmds; i++) { | |
1593 | cmd = &dev->vendor_cmds[i]; | |
1594 | ||
1595 | if (cmd->vendor_id != vid || cmd->subcmd != subcmd) | |
1596 | continue; | |
1597 | ||
29e76924 CR |
1598 | dev->cur_cmd_info = info; |
1599 | err = cmd->doit(dev, data, data_len); | |
1600 | dev->cur_cmd_info = NULL; | |
1601 | return err; | |
9e58095f SO |
1602 | } |
1603 | ||
1604 | return -EOPNOTSUPP; | |
1605 | } | |
1606 | ||
29e76924 CR |
1607 | /* message building helper */ |
1608 | static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq, | |
1609 | int flags, u8 cmd) | |
1610 | { | |
1611 | /* since there is no private header just add the generic one */ | |
1612 | return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd); | |
1613 | } | |
1614 | ||
1615 | static struct sk_buff * | |
1616 | __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen, | |
1617 | u32 portid, u32 seq, | |
1618 | enum nfc_attrs attr, | |
1619 | u32 oui, u32 subcmd, gfp_t gfp) | |
1620 | { | |
1621 | struct sk_buff *skb; | |
1622 | void *hdr; | |
1623 | ||
1624 | skb = nlmsg_new(approxlen + 100, gfp); | |
1625 | if (!skb) | |
1626 | return NULL; | |
1627 | ||
1628 | hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR); | |
1629 | if (!hdr) { | |
1630 | kfree_skb(skb); | |
1631 | return NULL; | |
1632 | } | |
1633 | ||
1634 | if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
1635 | goto nla_put_failure; | |
1636 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui)) | |
1637 | goto nla_put_failure; | |
1638 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd)) | |
1639 | goto nla_put_failure; | |
1640 | ||
1641 | ((void **)skb->cb)[0] = dev; | |
1642 | ((void **)skb->cb)[1] = hdr; | |
1643 | ||
1644 | return skb; | |
1645 | ||
1646 | nla_put_failure: | |
1647 | kfree_skb(skb); | |
1648 | return NULL; | |
1649 | } | |
1650 | ||
1651 | struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev, | |
1652 | enum nfc_attrs attr, | |
1653 | u32 oui, u32 subcmd, | |
1654 | int approxlen) | |
1655 | { | |
1656 | if (WARN_ON(!dev->cur_cmd_info)) | |
1657 | return NULL; | |
1658 | ||
1659 | return __nfc_alloc_vendor_cmd_skb(dev, approxlen, | |
1660 | dev->cur_cmd_info->snd_portid, | |
1661 | dev->cur_cmd_info->snd_seq, attr, | |
1662 | oui, subcmd, GFP_KERNEL); | |
1663 | } | |
1664 | EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb); | |
1665 | ||
1666 | int nfc_vendor_cmd_reply(struct sk_buff *skb) | |
1667 | { | |
1668 | struct nfc_dev *dev = ((void **)skb->cb)[0]; | |
1669 | void *hdr = ((void **)skb->cb)[1]; | |
1670 | ||
1671 | /* clear CB data for netlink core to own from now on */ | |
1672 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1673 | ||
1674 | if (WARN_ON(!dev->cur_cmd_info)) { | |
1675 | kfree_skb(skb); | |
1676 | return -EINVAL; | |
1677 | } | |
1678 | ||
1679 | genlmsg_end(skb, hdr); | |
1680 | return genlmsg_reply(skb, dev->cur_cmd_info); | |
1681 | } | |
1682 | EXPORT_SYMBOL(nfc_vendor_cmd_reply); | |
1683 | ||
4534de83 | 1684 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1685 | { |
1686 | .cmd = NFC_CMD_GET_DEVICE, | |
1687 | .doit = nfc_genl_get_device, | |
1688 | .dumpit = nfc_genl_dump_devices, | |
1689 | .done = nfc_genl_dump_devices_done, | |
1690 | .policy = nfc_genl_policy, | |
8b3fe7b5 IE |
1691 | }, |
1692 | { | |
1693 | .cmd = NFC_CMD_DEV_UP, | |
1694 | .doit = nfc_genl_dev_up, | |
1695 | .policy = nfc_genl_policy, | |
1696 | }, | |
1697 | { | |
1698 | .cmd = NFC_CMD_DEV_DOWN, | |
1699 | .doit = nfc_genl_dev_down, | |
1700 | .policy = nfc_genl_policy, | |
4d12b8b1 LRV |
1701 | }, |
1702 | { | |
1703 | .cmd = NFC_CMD_START_POLL, | |
1704 | .doit = nfc_genl_start_poll, | |
1705 | .policy = nfc_genl_policy, | |
1706 | }, | |
1707 | { | |
1708 | .cmd = NFC_CMD_STOP_POLL, | |
1709 | .doit = nfc_genl_stop_poll, | |
1710 | .policy = nfc_genl_policy, | |
1711 | }, | |
1ed28f61 SO |
1712 | { |
1713 | .cmd = NFC_CMD_DEP_LINK_UP, | |
1714 | .doit = nfc_genl_dep_link_up, | |
1715 | .policy = nfc_genl_policy, | |
1716 | }, | |
1717 | { | |
1718 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
1719 | .doit = nfc_genl_dep_link_down, | |
1720 | .policy = nfc_genl_policy, | |
1721 | }, | |
4d12b8b1 LRV |
1722 | { |
1723 | .cmd = NFC_CMD_GET_TARGET, | |
1724 | .dumpit = nfc_genl_dump_targets, | |
1725 | .done = nfc_genl_dump_targets_done, | |
1726 | .policy = nfc_genl_policy, | |
1727 | }, | |
52feb444 TE |
1728 | { |
1729 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
1730 | .doit = nfc_genl_llc_get_params, | |
1731 | .policy = nfc_genl_policy, | |
1732 | }, | |
1733 | { | |
1734 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
1735 | .doit = nfc_genl_llc_set_params, | |
1736 | .policy = nfc_genl_policy, | |
1737 | }, | |
d9b8d8e1 TE |
1738 | { |
1739 | .cmd = NFC_CMD_LLC_SDREQ, | |
1740 | .doit = nfc_genl_llc_sdreq, | |
1741 | .policy = nfc_genl_policy, | |
1742 | }, | |
9674da87 | 1743 | { |
9ea7187c SO |
1744 | .cmd = NFC_CMD_FW_DOWNLOAD, |
1745 | .doit = nfc_genl_fw_download, | |
9674da87 EL |
1746 | .policy = nfc_genl_policy, |
1747 | }, | |
be085653 SO |
1748 | { |
1749 | .cmd = NFC_CMD_ENABLE_SE, | |
1750 | .doit = nfc_genl_enable_se, | |
1751 | .policy = nfc_genl_policy, | |
1752 | }, | |
1753 | { | |
1754 | .cmd = NFC_CMD_DISABLE_SE, | |
1755 | .doit = nfc_genl_disable_se, | |
1756 | .policy = nfc_genl_policy, | |
1757 | }, | |
ac22ac46 SO |
1758 | { |
1759 | .cmd = NFC_CMD_GET_SE, | |
1760 | .dumpit = nfc_genl_dump_ses, | |
1761 | .done = nfc_genl_dump_ses_done, | |
1762 | .policy = nfc_genl_policy, | |
1763 | }, | |
5ce3f32b SO |
1764 | { |
1765 | .cmd = NFC_CMD_SE_IO, | |
1766 | .doit = nfc_genl_se_io, | |
1767 | .policy = nfc_genl_policy, | |
1768 | }, | |
3682f49f CR |
1769 | { |
1770 | .cmd = NFC_CMD_ACTIVATE_TARGET, | |
1771 | .doit = nfc_genl_activate_target, | |
1772 | .policy = nfc_genl_policy, | |
1773 | }, | |
9e58095f SO |
1774 | { |
1775 | .cmd = NFC_CMD_VENDOR, | |
1776 | .doit = nfc_genl_vendor_cmd, | |
1777 | .policy = nfc_genl_policy, | |
1778 | }, | |
4d63adfe MG |
1779 | { |
1780 | .cmd = NFC_CMD_DEACTIVATE_TARGET, | |
1781 | .doit = nfc_genl_deactivate_target, | |
1782 | .policy = nfc_genl_policy, | |
1783 | }, | |
4d12b8b1 LRV |
1784 | }; |
1785 | ||
56989f6d | 1786 | static struct genl_family nfc_genl_family __ro_after_init = { |
489111e5 JB |
1787 | .hdrsize = 0, |
1788 | .name = NFC_GENL_NAME, | |
1789 | .version = NFC_GENL_VERSION, | |
1790 | .maxattr = NFC_ATTR_MAX, | |
1791 | .module = THIS_MODULE, | |
1792 | .ops = nfc_genl_ops, | |
1793 | .n_ops = ARRAY_SIZE(nfc_genl_ops), | |
1794 | .mcgrps = nfc_genl_mcgrps, | |
1795 | .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps), | |
1796 | }; | |
1797 | ||
3c0cc8aa SJ |
1798 | |
1799 | struct urelease_work { | |
1800 | struct work_struct w; | |
65bc4f93 | 1801 | u32 portid; |
3c0cc8aa SJ |
1802 | }; |
1803 | ||
1804 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1805 | { |
3c0cc8aa | 1806 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1807 | struct class_dev_iter iter; |
1808 | struct nfc_dev *dev; | |
1809 | ||
c487606f | 1810 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1811 | |
3c0cc8aa | 1812 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1813 | |
1814 | nfc_device_iter_init(&iter); | |
1815 | dev = nfc_device_iter_next(&iter); | |
1816 | ||
1817 | while (dev) { | |
3c0cc8aa SJ |
1818 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1819 | ||
c487606f | 1820 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1821 | nfc_stop_poll(dev); |
15e47304 | 1822 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1823 | } |
3c0cc8aa SJ |
1824 | |
1825 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1826 | ||
4d12b8b1 LRV |
1827 | dev = nfc_device_iter_next(&iter); |
1828 | } | |
1829 | ||
1830 | nfc_device_iter_exit(&iter); | |
1831 | ||
3c0cc8aa SJ |
1832 | mutex_unlock(&nfc_devlist_mutex); |
1833 | ||
1834 | kfree(w); | |
1835 | } | |
1836 | ||
1837 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1838 | unsigned long event, void *ptr) | |
1839 | { | |
1840 | struct netlink_notify *n = ptr; | |
1841 | struct urelease_work *w; | |
1842 | ||
1843 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1844 | goto out; | |
1845 | ||
c487606f | 1846 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1847 | |
1848 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1849 | if (w) { | |
1850 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1851 | w->portid = n->portid; |
3c0cc8aa SJ |
1852 | schedule_work((struct work_struct *) w); |
1853 | } | |
1854 | ||
4d12b8b1 LRV |
1855 | out: |
1856 | return NOTIFY_DONE; | |
1857 | } | |
1858 | ||
1859 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1860 | { | |
15e47304 | 1861 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1862 | mutex_init(&genl_data->genl_data_mutex); |
1863 | } | |
1864 | ||
1865 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1866 | { | |
1867 | mutex_destroy(&genl_data->genl_data_mutex); | |
1868 | } | |
1869 | ||
1870 | static struct notifier_block nl_notifier = { | |
1871 | .notifier_call = nfc_genl_rcv_nl_event, | |
1872 | }; | |
1873 | ||
1874 | /** | |
1875 | * nfc_genl_init() - Initialize netlink interface | |
1876 | * | |
1877 | * This initialization function registers the nfc netlink family. | |
1878 | */ | |
1879 | int __init nfc_genl_init(void) | |
1880 | { | |
1881 | int rc; | |
1882 | ||
489111e5 | 1883 | rc = genl_register_family(&nfc_genl_family); |
4d12b8b1 LRV |
1884 | if (rc) |
1885 | return rc; | |
1886 | ||
4d12b8b1 LRV |
1887 | netlink_register_notifier(&nl_notifier); |
1888 | ||
2a94fe48 | 1889 | return 0; |
4d12b8b1 LRV |
1890 | } |
1891 | ||
1892 | /** | |
1893 | * nfc_genl_exit() - Deinitialize netlink interface | |
1894 | * | |
1895 | * This exit function unregisters the nfc netlink family. | |
1896 | */ | |
1897 | void nfc_genl_exit(void) | |
1898 | { | |
1899 | netlink_unregister_notifier(&nl_notifier); | |
1900 | genl_unregister_family(&nfc_genl_family); | |
1901 | } |