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