Commit | Line | Data |
---|---|---|
4d12b8b1 LRV |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
3 | * | |
4 | * Authors: | |
5 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> | |
6 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> | |
7 | * | |
9e58095f SO |
8 | * Vendor commands implementation based on net/wireless/nl80211.c |
9 | * which is: | |
10 | * | |
11 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> | |
12 | * Copyright 2013-2014 Intel Mobile Communications GmbH | |
13 | * | |
4d12b8b1 LRV |
14 | * This program is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
98b32dec | 25 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
4d12b8b1 LRV |
26 | */ |
27 | ||
52858b51 | 28 | #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__ |
20c239c1 | 29 | |
4d12b8b1 LRV |
30 | #include <net/genetlink.h> |
31 | #include <linux/nfc.h> | |
32 | #include <linux/slab.h> | |
33 | ||
34 | #include "nfc.h" | |
30cc4587 | 35 | #include "llcp.h" |
52feb444 | 36 | |
2a94fe48 JB |
37 | static const struct genl_multicast_group nfc_genl_mcgrps[] = { |
38 | { .name = NFC_GENL_MCAST_EVENT_NAME, }, | |
4d12b8b1 LRV |
39 | }; |
40 | ||
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] = { | |
fe9c8426 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: | |
4d12b8b1 LRV |
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 | 238 | nla_put_failure: |
fc40a8c1 SO |
239 | free_msg: |
240 | nlmsg_free(msg); | |
241 | return -EMSGSIZE; | |
242 | } | |
243 | ||
244 | int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) | |
245 | { | |
246 | struct sk_buff *msg; | |
247 | void *hdr; | |
248 | ||
58050fce | 249 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
250 | if (!msg) |
251 | return -ENOMEM; | |
252 | ||
253 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
254 | NFC_EVENT_TM_ACTIVATED); | |
255 | if (!hdr) | |
256 | goto free_msg; | |
257 | ||
258 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
259 | goto nla_put_failure; | |
260 | if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) | |
261 | goto nla_put_failure; | |
262 | ||
263 | genlmsg_end(msg, hdr); | |
264 | ||
2a94fe48 | 265 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
266 | |
267 | return 0; | |
268 | ||
269 | nla_put_failure: | |
fc40a8c1 SO |
270 | free_msg: |
271 | nlmsg_free(msg); | |
272 | return -EMSGSIZE; | |
273 | } | |
274 | ||
275 | int nfc_genl_tm_deactivated(struct nfc_dev *dev) | |
276 | { | |
277 | struct sk_buff *msg; | |
278 | void *hdr; | |
279 | ||
58050fce | 280 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
281 | if (!msg) |
282 | return -ENOMEM; | |
283 | ||
284 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
285 | NFC_EVENT_TM_DEACTIVATED); | |
286 | if (!hdr) | |
287 | goto free_msg; | |
288 | ||
289 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
290 | goto nla_put_failure; | |
291 | ||
292 | genlmsg_end(msg, hdr); | |
293 | ||
2a94fe48 | 294 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
295 | |
296 | return 0; | |
297 | ||
8112a5c9 | 298 | nla_put_failure: |
8112a5c9 SO |
299 | free_msg: |
300 | nlmsg_free(msg); | |
301 | return -EMSGSIZE; | |
302 | } | |
303 | ||
85a2566d OH |
304 | static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg) |
305 | { | |
306 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || | |
307 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
308 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
309 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || | |
310 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
311 | return -1; | |
312 | return 0; | |
313 | } | |
314 | ||
4d12b8b1 LRV |
315 | int nfc_genl_device_added(struct nfc_dev *dev) |
316 | { | |
317 | struct sk_buff *msg; | |
318 | void *hdr; | |
319 | ||
58050fce | 320 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
321 | if (!msg) |
322 | return -ENOMEM; | |
323 | ||
324 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 325 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
326 | if (!hdr) |
327 | goto free_msg; | |
328 | ||
85a2566d | 329 | if (nfc_genl_setup_device_added(dev, msg)) |
1e6428d8 | 330 | goto nla_put_failure; |
4d12b8b1 LRV |
331 | |
332 | genlmsg_end(msg, hdr); | |
333 | ||
2a94fe48 | 334 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
335 | |
336 | return 0; | |
337 | ||
338 | nla_put_failure: | |
4d12b8b1 LRV |
339 | free_msg: |
340 | nlmsg_free(msg); | |
341 | return -EMSGSIZE; | |
342 | } | |
343 | ||
344 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
345 | { | |
346 | struct sk_buff *msg; | |
347 | void *hdr; | |
348 | ||
58050fce | 349 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
350 | if (!msg) |
351 | return -ENOMEM; | |
352 | ||
353 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 354 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
355 | if (!hdr) |
356 | goto free_msg; | |
357 | ||
1e6428d8 DM |
358 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
359 | goto nla_put_failure; | |
4d12b8b1 LRV |
360 | |
361 | genlmsg_end(msg, hdr); | |
362 | ||
2a94fe48 | 363 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
364 | |
365 | return 0; | |
366 | ||
367 | nla_put_failure: | |
4d12b8b1 LRV |
368 | free_msg: |
369 | nlmsg_free(msg); | |
370 | return -EMSGSIZE; | |
371 | } | |
372 | ||
d9b8d8e1 TE |
373 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
374 | { | |
375 | struct sk_buff *msg; | |
376 | struct nlattr *sdp_attr, *uri_attr; | |
377 | struct nfc_llcp_sdp_tlv *sdres; | |
378 | struct hlist_node *n; | |
379 | void *hdr; | |
380 | int rc = -EMSGSIZE; | |
381 | int i; | |
382 | ||
383 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
384 | if (!msg) | |
385 | return -ENOMEM; | |
386 | ||
387 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
388 | NFC_EVENT_LLC_SDRES); | |
389 | if (!hdr) | |
390 | goto free_msg; | |
391 | ||
392 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
393 | goto nla_put_failure; | |
394 | ||
395 | sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP); | |
396 | if (sdp_attr == NULL) { | |
397 | rc = -ENOMEM; | |
398 | goto nla_put_failure; | |
399 | } | |
400 | ||
401 | i = 1; | |
402 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
403 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
404 | ||
405 | uri_attr = nla_nest_start(msg, i++); | |
406 | if (uri_attr == NULL) { | |
407 | rc = -ENOMEM; | |
408 | goto nla_put_failure; | |
409 | } | |
410 | ||
411 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
412 | goto nla_put_failure; | |
413 | ||
414 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
415 | goto nla_put_failure; | |
416 | ||
417 | nla_nest_end(msg, uri_attr); | |
418 | ||
419 | hlist_del(&sdres->node); | |
420 | ||
421 | nfc_llcp_free_sdp_tlv(sdres); | |
422 | } | |
423 | ||
424 | nla_nest_end(msg, sdp_attr); | |
425 | ||
426 | genlmsg_end(msg, hdr); | |
427 | ||
2a94fe48 | 428 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
d9b8d8e1 TE |
429 | |
430 | nla_put_failure: | |
d9b8d8e1 TE |
431 | free_msg: |
432 | nlmsg_free(msg); | |
433 | ||
434 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
435 | ||
436 | return rc; | |
437 | } | |
438 | ||
2757c372 SO |
439 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
440 | { | |
441 | struct sk_buff *msg; | |
442 | void *hdr; | |
443 | ||
444 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
445 | if (!msg) | |
446 | return -ENOMEM; | |
447 | ||
448 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
449 | NFC_EVENT_SE_ADDED); | |
450 | if (!hdr) | |
451 | goto free_msg; | |
452 | ||
453 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
454 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
455 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
456 | goto nla_put_failure; | |
457 | ||
458 | genlmsg_end(msg, hdr); | |
459 | ||
2a94fe48 | 460 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
461 | |
462 | return 0; | |
463 | ||
464 | nla_put_failure: | |
2757c372 SO |
465 | free_msg: |
466 | nlmsg_free(msg); | |
467 | return -EMSGSIZE; | |
468 | } | |
469 | ||
470 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
471 | { | |
472 | struct sk_buff *msg; | |
473 | void *hdr; | |
474 | ||
475 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
476 | if (!msg) | |
477 | return -ENOMEM; | |
478 | ||
479 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
480 | NFC_EVENT_SE_REMOVED); | |
481 | if (!hdr) | |
482 | goto free_msg; | |
483 | ||
484 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
485 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
486 | goto nla_put_failure; | |
487 | ||
488 | genlmsg_end(msg, hdr); | |
489 | ||
2a94fe48 | 490 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
491 | |
492 | return 0; | |
493 | ||
494 | nla_put_failure: | |
2757c372 SO |
495 | free_msg: |
496 | nlmsg_free(msg); | |
497 | return -EMSGSIZE; | |
498 | } | |
499 | ||
447b27c4 CR |
500 | int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx, |
501 | struct nfc_evt_transaction *evt_transaction) | |
502 | { | |
503 | struct nfc_se *se; | |
504 | struct sk_buff *msg; | |
505 | void *hdr; | |
506 | ||
507 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
508 | if (!msg) | |
509 | return -ENOMEM; | |
510 | ||
511 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
512 | NFC_EVENT_SE_TRANSACTION); | |
513 | if (!hdr) | |
514 | goto free_msg; | |
515 | ||
516 | se = nfc_find_se(dev, se_idx); | |
517 | if (!se) | |
518 | goto free_msg; | |
519 | ||
520 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
521 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
522 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) || | |
523 | nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len, | |
524 | evt_transaction->aid) || | |
525 | nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len, | |
526 | evt_transaction->params)) | |
527 | goto nla_put_failure; | |
528 | ||
529 | /* evt_transaction is no more used */ | |
530 | devm_kfree(&dev->dev, evt_transaction); | |
531 | ||
532 | genlmsg_end(msg, hdr); | |
533 | ||
534 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
535 | ||
536 | return 0; | |
537 | ||
538 | nla_put_failure: | |
447b27c4 CR |
539 | free_msg: |
540 | /* evt_transaction is no more used */ | |
541 | devm_kfree(&dev->dev, evt_transaction); | |
542 | nlmsg_free(msg); | |
543 | return -EMSGSIZE; | |
544 | } | |
545 | ||
9afec6d3 CR |
546 | int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx) |
547 | { | |
548 | struct nfc_se *se; | |
549 | struct sk_buff *msg; | |
550 | void *hdr; | |
551 | ||
552 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
553 | if (!msg) | |
554 | return -ENOMEM; | |
555 | ||
556 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
557 | NFC_EVENT_SE_CONNECTIVITY); | |
558 | if (!hdr) | |
559 | goto free_msg; | |
560 | ||
561 | se = nfc_find_se(dev, se_idx); | |
562 | if (!se) | |
563 | goto free_msg; | |
564 | ||
565 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
566 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
567 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
568 | goto nla_put_failure; | |
569 | ||
570 | genlmsg_end(msg, hdr); | |
571 | ||
572 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
573 | ||
574 | return 0; | |
575 | ||
576 | nla_put_failure: | |
9afec6d3 CR |
577 | free_msg: |
578 | nlmsg_free(msg); | |
579 | return -EMSGSIZE; | |
580 | } | |
581 | ||
4d12b8b1 | 582 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 583 | u32 portid, u32 seq, |
0a40acb2 SO |
584 | struct netlink_callback *cb, |
585 | int flags) | |
4d12b8b1 LRV |
586 | { |
587 | void *hdr; | |
588 | ||
15e47304 | 589 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 590 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
591 | if (!hdr) |
592 | return -EMSGSIZE; | |
593 | ||
594 | if (cb) | |
0a833c29 | 595 | genl_dump_check_consistent(cb, hdr); |
4d12b8b1 | 596 | |
85a2566d | 597 | if (nfc_genl_setup_device_added(dev, msg)) |
1e6428d8 | 598 | goto nla_put_failure; |
4d12b8b1 | 599 | |
053c095a JB |
600 | genlmsg_end(msg, hdr); |
601 | return 0; | |
4d12b8b1 LRV |
602 | |
603 | nla_put_failure: | |
604 | genlmsg_cancel(msg, hdr); | |
605 | return -EMSGSIZE; | |
606 | } | |
607 | ||
608 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 609 | struct netlink_callback *cb) |
4d12b8b1 LRV |
610 | { |
611 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
612 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
613 | bool first_call = false; | |
614 | ||
4d12b8b1 LRV |
615 | if (!iter) { |
616 | first_call = true; | |
617 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
618 | if (!iter) | |
619 | return -ENOMEM; | |
620 | cb->args[0] = (long) iter; | |
621 | } | |
622 | ||
623 | mutex_lock(&nfc_devlist_mutex); | |
624 | ||
625 | cb->seq = nfc_devlist_generation; | |
626 | ||
627 | if (first_call) { | |
628 | nfc_device_iter_init(iter); | |
629 | dev = nfc_device_iter_next(iter); | |
630 | } | |
631 | ||
632 | while (dev) { | |
633 | int rc; | |
634 | ||
15e47304 | 635 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 636 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
637 | if (rc < 0) |
638 | break; | |
639 | ||
640 | dev = nfc_device_iter_next(iter); | |
641 | } | |
642 | ||
643 | mutex_unlock(&nfc_devlist_mutex); | |
644 | ||
645 | cb->args[1] = (long) dev; | |
646 | ||
647 | return skb->len; | |
648 | } | |
649 | ||
650 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
651 | { | |
652 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
653 | ||
4d12b8b1 LRV |
654 | nfc_device_iter_exit(iter); |
655 | kfree(iter); | |
656 | ||
657 | return 0; | |
658 | } | |
659 | ||
1ed28f61 | 660 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 661 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
662 | { |
663 | struct sk_buff *msg; | |
664 | void *hdr; | |
665 | ||
666 | pr_debug("DEP link is up\n"); | |
667 | ||
58050fce | 668 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
669 | if (!msg) |
670 | return -ENOMEM; | |
671 | ||
0a40acb2 | 672 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
673 | if (!hdr) |
674 | goto free_msg; | |
675 | ||
1e6428d8 DM |
676 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
677 | goto nla_put_failure; | |
678 | if (rf_mode == NFC_RF_INITIATOR && | |
679 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
680 | goto nla_put_failure; | |
681 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
682 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
683 | goto nla_put_failure; | |
1ed28f61 SO |
684 | |
685 | genlmsg_end(msg, hdr); | |
686 | ||
687 | dev->dep_link_up = true; | |
688 | ||
2a94fe48 | 689 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
690 | |
691 | return 0; | |
692 | ||
693 | nla_put_failure: | |
1ed28f61 SO |
694 | free_msg: |
695 | nlmsg_free(msg); | |
696 | return -EMSGSIZE; | |
697 | } | |
698 | ||
699 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
700 | { | |
701 | struct sk_buff *msg; | |
702 | void *hdr; | |
703 | ||
704 | pr_debug("DEP link is down\n"); | |
705 | ||
58050fce | 706 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
707 | if (!msg) |
708 | return -ENOMEM; | |
709 | ||
710 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 711 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
712 | if (!hdr) |
713 | goto free_msg; | |
714 | ||
1e6428d8 DM |
715 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
716 | goto nla_put_failure; | |
1ed28f61 SO |
717 | |
718 | genlmsg_end(msg, hdr); | |
719 | ||
2a94fe48 | 720 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
721 | |
722 | return 0; | |
723 | ||
724 | nla_put_failure: | |
1ed28f61 SO |
725 | free_msg: |
726 | nlmsg_free(msg); | |
727 | return -EMSGSIZE; | |
728 | } | |
729 | ||
4d12b8b1 LRV |
730 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
731 | { | |
732 | struct sk_buff *msg; | |
733 | struct nfc_dev *dev; | |
734 | u32 idx; | |
735 | int rc = -ENOBUFS; | |
736 | ||
4d12b8b1 LRV |
737 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
738 | return -EINVAL; | |
739 | ||
740 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
741 | ||
742 | dev = nfc_get_device(idx); | |
743 | if (!dev) | |
744 | return -ENODEV; | |
745 | ||
58050fce | 746 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
747 | if (!msg) { |
748 | rc = -ENOMEM; | |
749 | goto out_putdev; | |
750 | } | |
751 | ||
15e47304 | 752 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 753 | NULL, 0); |
4d12b8b1 LRV |
754 | if (rc < 0) |
755 | goto out_free; | |
756 | ||
757 | nfc_put_device(dev); | |
758 | ||
759 | return genlmsg_reply(msg, info); | |
760 | ||
761 | out_free: | |
762 | nlmsg_free(msg); | |
763 | out_putdev: | |
764 | nfc_put_device(dev); | |
765 | return rc; | |
766 | } | |
767 | ||
8b3fe7b5 IE |
768 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
769 | { | |
770 | struct nfc_dev *dev; | |
771 | int rc; | |
772 | u32 idx; | |
773 | ||
8b3fe7b5 IE |
774 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
775 | return -EINVAL; | |
776 | ||
777 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
778 | ||
779 | dev = nfc_get_device(idx); | |
780 | if (!dev) | |
781 | return -ENODEV; | |
782 | ||
783 | rc = nfc_dev_up(dev); | |
784 | ||
785 | nfc_put_device(dev); | |
786 | return rc; | |
787 | } | |
788 | ||
789 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
790 | { | |
791 | struct nfc_dev *dev; | |
792 | int rc; | |
793 | u32 idx; | |
794 | ||
8b3fe7b5 IE |
795 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
796 | return -EINVAL; | |
797 | ||
798 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
799 | ||
800 | dev = nfc_get_device(idx); | |
801 | if (!dev) | |
802 | return -ENODEV; | |
803 | ||
804 | rc = nfc_dev_down(dev); | |
805 | ||
806 | nfc_put_device(dev); | |
807 | return rc; | |
808 | } | |
809 | ||
4d12b8b1 LRV |
810 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
811 | { | |
812 | struct nfc_dev *dev; | |
813 | int rc; | |
814 | u32 idx; | |
fe7c5800 | 815 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 816 | |
1ed28f61 SO |
817 | pr_debug("Poll start\n"); |
818 | ||
4d12b8b1 | 819 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
820 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
821 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 822 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
823 | return -EINVAL; |
824 | ||
825 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
826 | |
827 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
828 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
829 | |
830 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
831 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
832 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
833 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
834 | |
835 | dev = nfc_get_device(idx); | |
836 | if (!dev) | |
837 | return -ENODEV; | |
838 | ||
839 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
840 | ||
fe7c5800 | 841 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 842 | if (!rc) |
15e47304 | 843 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
844 | |
845 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
846 | ||
847 | nfc_put_device(dev); | |
848 | return rc; | |
849 | } | |
850 | ||
851 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
852 | { | |
853 | struct nfc_dev *dev; | |
854 | int rc; | |
855 | u32 idx; | |
856 | ||
4d12b8b1 LRV |
857 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
858 | return -EINVAL; | |
859 | ||
860 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
861 | ||
862 | dev = nfc_get_device(idx); | |
863 | if (!dev) | |
864 | return -ENODEV; | |
865 | ||
a831b913 SO |
866 | device_lock(&dev->dev); |
867 | ||
868 | if (!dev->polling) { | |
869 | device_unlock(&dev->dev); | |
870 | return -EINVAL; | |
871 | } | |
872 | ||
873 | device_unlock(&dev->dev); | |
874 | ||
4d12b8b1 LRV |
875 | mutex_lock(&dev->genl_data.genl_data_mutex); |
876 | ||
15e47304 | 877 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
878 | rc = -EBUSY; |
879 | goto out; | |
880 | } | |
881 | ||
882 | rc = nfc_stop_poll(dev); | |
15e47304 | 883 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
884 | |
885 | out: | |
886 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
887 | nfc_put_device(dev); | |
888 | return rc; | |
889 | } | |
890 | ||
3682f49f CR |
891 | static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info) |
892 | { | |
893 | struct nfc_dev *dev; | |
894 | u32 device_idx, target_idx, protocol; | |
895 | int rc; | |
896 | ||
a0323b97 MJ |
897 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
898 | !info->attrs[NFC_ATTR_TARGET_INDEX] || | |
899 | !info->attrs[NFC_ATTR_PROTOCOLS]) | |
3682f49f CR |
900 | return -EINVAL; |
901 | ||
902 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
903 | ||
904 | dev = nfc_get_device(device_idx); | |
905 | if (!dev) | |
906 | return -ENODEV; | |
907 | ||
908 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
909 | protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
910 | ||
96d4581f | 911 | nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); |
3682f49f CR |
912 | rc = nfc_activate_target(dev, target_idx, protocol); |
913 | ||
914 | nfc_put_device(dev); | |
3267183c | 915 | return rc; |
3682f49f CR |
916 | } |
917 | ||
4d63adfe MG |
918 | static int nfc_genl_deactivate_target(struct sk_buff *skb, |
919 | struct genl_info *info) | |
920 | { | |
921 | struct nfc_dev *dev; | |
922 | u32 device_idx, target_idx; | |
923 | int rc; | |
924 | ||
925 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
926 | return -EINVAL; | |
927 | ||
928 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
929 | ||
930 | dev = nfc_get_device(device_idx); | |
931 | if (!dev) | |
932 | return -ENODEV; | |
933 | ||
934 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
935 | ||
936 | rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); | |
937 | ||
938 | nfc_put_device(dev); | |
939 | return rc; | |
940 | } | |
941 | ||
1ed28f61 SO |
942 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
943 | { | |
944 | struct nfc_dev *dev; | |
945 | int rc, tgt_idx; | |
946 | u32 idx; | |
47807d3d | 947 | u8 comm; |
1ed28f61 SO |
948 | |
949 | pr_debug("DEP link up\n"); | |
950 | ||
951 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 952 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
953 | return -EINVAL; |
954 | ||
955 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
956 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
957 | tgt_idx = NFC_TARGET_IDX_ANY; | |
958 | else | |
959 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
960 | ||
961 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
962 | |
963 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
964 | return -EINVAL; | |
965 | ||
1ed28f61 SO |
966 | dev = nfc_get_device(idx); |
967 | if (!dev) | |
968 | return -ENODEV; | |
969 | ||
47807d3d | 970 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
971 | |
972 | nfc_put_device(dev); | |
973 | ||
974 | return rc; | |
975 | } | |
976 | ||
977 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
978 | { | |
979 | struct nfc_dev *dev; | |
980 | int rc; | |
981 | u32 idx; | |
982 | ||
983 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
984 | return -EINVAL; | |
985 | ||
986 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
987 | ||
988 | dev = nfc_get_device(idx); | |
989 | if (!dev) | |
990 | return -ENODEV; | |
991 | ||
992 | rc = nfc_dep_link_down(dev); | |
993 | ||
994 | nfc_put_device(dev); | |
995 | return rc; | |
996 | } | |
997 | ||
52feb444 TE |
998 | static int nfc_genl_send_params(struct sk_buff *msg, |
999 | struct nfc_llcp_local *local, | |
1000 | u32 portid, u32 seq) | |
1001 | { | |
1002 | void *hdr; | |
1003 | ||
1004 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
1005 | NFC_CMD_LLC_GET_PARAMS); | |
1006 | if (!hdr) | |
1007 | return -EMSGSIZE; | |
1008 | ||
1009 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
1010 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
1011 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
1012 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
1013 | goto nla_put_failure; | |
1014 | ||
053c095a JB |
1015 | genlmsg_end(msg, hdr); |
1016 | return 0; | |
52feb444 TE |
1017 | |
1018 | nla_put_failure: | |
52feb444 TE |
1019 | genlmsg_cancel(msg, hdr); |
1020 | return -EMSGSIZE; | |
1021 | } | |
1022 | ||
1023 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
1024 | { | |
1025 | struct nfc_dev *dev; | |
1026 | struct nfc_llcp_local *local; | |
1027 | int rc = 0; | |
1028 | struct sk_buff *msg = NULL; | |
1029 | u32 idx; | |
1030 | ||
1031 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1032 | return -EINVAL; | |
1033 | ||
1034 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1035 | ||
1036 | dev = nfc_get_device(idx); | |
1037 | if (!dev) | |
1038 | return -ENODEV; | |
1039 | ||
1040 | device_lock(&dev->dev); | |
1041 | ||
1042 | local = nfc_llcp_find_local(dev); | |
1043 | if (!local) { | |
1044 | rc = -ENODEV; | |
1045 | goto exit; | |
1046 | } | |
1047 | ||
1048 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1049 | if (!msg) { | |
1050 | rc = -ENOMEM; | |
1051 | goto exit; | |
1052 | } | |
1053 | ||
1054 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
1055 | ||
1056 | exit: | |
1057 | device_unlock(&dev->dev); | |
1058 | ||
1059 | nfc_put_device(dev); | |
1060 | ||
1061 | if (rc < 0) { | |
1062 | if (msg) | |
1063 | nlmsg_free(msg); | |
1064 | ||
1065 | return rc; | |
1066 | } | |
1067 | ||
1068 | return genlmsg_reply(msg, info); | |
1069 | } | |
1070 | ||
1071 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
1072 | { | |
1073 | struct nfc_dev *dev; | |
1074 | struct nfc_llcp_local *local; | |
1075 | u8 rw = 0; | |
1076 | u16 miux = 0; | |
1077 | u32 idx; | |
1078 | int rc = 0; | |
1079 | ||
1080 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1081 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
1082 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
1083 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
1084 | return -EINVAL; | |
1085 | ||
1086 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
1087 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
1088 | ||
1089 | if (rw > LLCP_MAX_RW) | |
1090 | return -EINVAL; | |
1091 | } | |
1092 | ||
1093 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
1094 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
1095 | ||
1096 | if (miux > LLCP_MAX_MIUX) | |
1097 | return -EINVAL; | |
1098 | } | |
1099 | ||
1100 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1101 | ||
1102 | dev = nfc_get_device(idx); | |
1103 | if (!dev) | |
1104 | return -ENODEV; | |
1105 | ||
1106 | device_lock(&dev->dev); | |
1107 | ||
1108 | local = nfc_llcp_find_local(dev); | |
1109 | if (!local) { | |
1110 | nfc_put_device(dev); | |
1111 | rc = -ENODEV; | |
1112 | goto exit; | |
1113 | } | |
1114 | ||
1115 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
1116 | if (dev->dep_link_up) { | |
1117 | rc = -EINPROGRESS; | |
1118 | goto exit; | |
1119 | } | |
1120 | ||
1121 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
1122 | } | |
1123 | ||
1124 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
1125 | local->rw = rw; | |
1126 | ||
1127 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
1128 | local->miux = cpu_to_be16(miux); | |
1129 | ||
1130 | exit: | |
1131 | device_unlock(&dev->dev); | |
1132 | ||
1133 | nfc_put_device(dev); | |
1134 | ||
1135 | return rc; | |
1136 | } | |
1137 | ||
d9b8d8e1 TE |
1138 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1139 | { | |
1140 | struct nfc_dev *dev; | |
1141 | struct nfc_llcp_local *local; | |
1142 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1143 | u32 idx; | |
1144 | u8 tid; | |
1145 | char *uri; | |
1146 | int rc = 0, rem; | |
1147 | size_t uri_len, tlvs_len; | |
1148 | struct hlist_head sdreq_list; | |
1149 | struct nfc_llcp_sdp_tlv *sdreq; | |
1150 | ||
1151 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1152 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1153 | return -EINVAL; | |
1154 | ||
1155 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1156 | ||
1157 | dev = nfc_get_device(idx); | |
9abebb8a JL |
1158 | if (!dev) |
1159 | return -ENODEV; | |
d9b8d8e1 TE |
1160 | |
1161 | device_lock(&dev->dev); | |
1162 | ||
1163 | if (dev->dep_link_up == false) { | |
1164 | rc = -ENOLINK; | |
1165 | goto exit; | |
1166 | } | |
1167 | ||
1168 | local = nfc_llcp_find_local(dev); | |
1169 | if (!local) { | |
1170 | nfc_put_device(dev); | |
1171 | rc = -ENODEV; | |
1172 | goto exit; | |
1173 | } | |
1174 | ||
1175 | INIT_HLIST_HEAD(&sdreq_list); | |
1176 | ||
1177 | tlvs_len = 0; | |
1178 | ||
1179 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
1180 | rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr, | |
fe52145f | 1181 | nfc_sdp_genl_policy, info->extack); |
d9b8d8e1 TE |
1182 | |
1183 | if (rc != 0) { | |
1184 | rc = -EINVAL; | |
1185 | goto exit; | |
1186 | } | |
1187 | ||
1188 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1189 | continue; | |
1190 | ||
1191 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1192 | if (uri_len == 0) | |
1193 | continue; | |
1194 | ||
1195 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1196 | if (uri == NULL || *uri == 0) | |
1197 | continue; | |
1198 | ||
1199 | tid = local->sdreq_next_tid++; | |
1200 | ||
1201 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1202 | if (sdreq == NULL) { | |
1203 | rc = -ENOMEM; | |
1204 | goto exit; | |
1205 | } | |
1206 | ||
1207 | tlvs_len += sdreq->tlv_len; | |
1208 | ||
1209 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1210 | } | |
1211 | ||
1212 | if (hlist_empty(&sdreq_list)) { | |
1213 | rc = -EINVAL; | |
1214 | goto exit; | |
1215 | } | |
1216 | ||
1217 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1218 | exit: | |
1219 | device_unlock(&dev->dev); | |
1220 | ||
1221 | nfc_put_device(dev); | |
1222 | ||
1223 | return rc; | |
1224 | } | |
1225 | ||
9ea7187c | 1226 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1227 | { |
1228 | struct nfc_dev *dev; | |
1229 | int rc; | |
1230 | u32 idx; | |
1231 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1232 | ||
1233 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1234 | return -EINVAL; | |
1235 | ||
1236 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1237 | ||
1238 | dev = nfc_get_device(idx); | |
1239 | if (!dev) | |
1240 | return -ENODEV; | |
1241 | ||
1242 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1243 | sizeof(firmware_name)); | |
1244 | ||
9ea7187c | 1245 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1246 | |
1247 | nfc_put_device(dev); | |
1248 | return rc; | |
1249 | } | |
1250 | ||
352a5f5f EL |
1251 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1252 | u32 result) | |
9674da87 EL |
1253 | { |
1254 | struct sk_buff *msg; | |
1255 | void *hdr; | |
1256 | ||
1257 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1258 | if (!msg) | |
1259 | return -ENOMEM; | |
1260 | ||
1261 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1262 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1263 | if (!hdr) |
1264 | goto free_msg; | |
1265 | ||
1266 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1267 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1268 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1269 | goto nla_put_failure; | |
1270 | ||
1271 | genlmsg_end(msg, hdr); | |
1272 | ||
2a94fe48 | 1273 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da87 EL |
1274 | |
1275 | return 0; | |
1276 | ||
1277 | nla_put_failure: | |
9674da87 EL |
1278 | free_msg: |
1279 | nlmsg_free(msg); | |
1280 | return -EMSGSIZE; | |
1281 | } | |
1282 | ||
be085653 SO |
1283 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1284 | { | |
1285 | struct nfc_dev *dev; | |
1286 | int rc; | |
1287 | u32 idx, se_idx; | |
1288 | ||
1289 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1290 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1291 | return -EINVAL; | |
1292 | ||
1293 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1294 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1295 | ||
1296 | dev = nfc_get_device(idx); | |
1297 | if (!dev) | |
1298 | return -ENODEV; | |
1299 | ||
1300 | rc = nfc_enable_se(dev, se_idx); | |
1301 | ||
1302 | nfc_put_device(dev); | |
1303 | return rc; | |
1304 | } | |
1305 | ||
1306 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1307 | { | |
1308 | struct nfc_dev *dev; | |
1309 | int rc; | |
1310 | u32 idx, se_idx; | |
1311 | ||
1312 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1313 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1314 | return -EINVAL; | |
1315 | ||
1316 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1317 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1318 | ||
1319 | dev = nfc_get_device(idx); | |
1320 | if (!dev) | |
1321 | return -ENODEV; | |
1322 | ||
1323 | rc = nfc_disable_se(dev, se_idx); | |
1324 | ||
1325 | nfc_put_device(dev); | |
1326 | return rc; | |
1327 | } | |
1328 | ||
ac22ac46 SO |
1329 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1330 | u32 portid, u32 seq, | |
1331 | struct netlink_callback *cb, | |
1332 | int flags) | |
1333 | { | |
1334 | void *hdr; | |
1335 | struct nfc_se *se, *n; | |
1336 | ||
1337 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1338 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1339 | NFC_CMD_GET_SE); | |
1340 | if (!hdr) | |
1341 | goto nla_put_failure; | |
1342 | ||
1343 | if (cb) | |
0a833c29 | 1344 | genl_dump_check_consistent(cb, hdr); |
ac22ac46 SO |
1345 | |
1346 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1347 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1348 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1349 | goto nla_put_failure; | |
1350 | ||
053c095a | 1351 | genlmsg_end(msg, hdr); |
ac22ac46 SO |
1352 | } |
1353 | ||
1354 | return 0; | |
1355 | ||
1356 | nla_put_failure: | |
1357 | genlmsg_cancel(msg, hdr); | |
1358 | return -EMSGSIZE; | |
1359 | } | |
1360 | ||
1361 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1362 | struct netlink_callback *cb) | |
1363 | { | |
1364 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1365 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1366 | bool first_call = false; | |
1367 | ||
1368 | if (!iter) { | |
1369 | first_call = true; | |
1370 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1371 | if (!iter) | |
1372 | return -ENOMEM; | |
1373 | cb->args[0] = (long) iter; | |
1374 | } | |
1375 | ||
1376 | mutex_lock(&nfc_devlist_mutex); | |
1377 | ||
1378 | cb->seq = nfc_devlist_generation; | |
1379 | ||
1380 | if (first_call) { | |
1381 | nfc_device_iter_init(iter); | |
1382 | dev = nfc_device_iter_next(iter); | |
1383 | } | |
1384 | ||
1385 | while (dev) { | |
1386 | int rc; | |
1387 | ||
1388 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1389 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1390 | if (rc < 0) | |
1391 | break; | |
1392 | ||
1393 | dev = nfc_device_iter_next(iter); | |
1394 | } | |
1395 | ||
1396 | mutex_unlock(&nfc_devlist_mutex); | |
1397 | ||
1398 | cb->args[1] = (long) dev; | |
1399 | ||
1400 | return skb->len; | |
1401 | } | |
1402 | ||
1403 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1404 | { | |
1405 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1406 | ||
1407 | nfc_device_iter_exit(iter); | |
1408 | kfree(iter); | |
1409 | ||
1410 | return 0; | |
1411 | } | |
1412 | ||
cd96db6f CR |
1413 | static int nfc_se_io(struct nfc_dev *dev, u32 se_idx, |
1414 | u8 *apdu, size_t apdu_length, | |
1415 | se_io_cb_t cb, void *cb_context) | |
1416 | { | |
1417 | struct nfc_se *se; | |
1418 | int rc; | |
1419 | ||
1420 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
1421 | ||
1422 | device_lock(&dev->dev); | |
1423 | ||
1424 | if (!device_is_registered(&dev->dev)) { | |
1425 | rc = -ENODEV; | |
1426 | goto error; | |
1427 | } | |
1428 | ||
1429 | if (!dev->dev_up) { | |
1430 | rc = -ENODEV; | |
1431 | goto error; | |
1432 | } | |
1433 | ||
1434 | if (!dev->ops->se_io) { | |
1435 | rc = -EOPNOTSUPP; | |
1436 | goto error; | |
1437 | } | |
1438 | ||
1439 | se = nfc_find_se(dev, se_idx); | |
1440 | if (!se) { | |
1441 | rc = -EINVAL; | |
1442 | goto error; | |
1443 | } | |
1444 | ||
1445 | if (se->state != NFC_SE_ENABLED) { | |
1446 | rc = -ENODEV; | |
1447 | goto error; | |
1448 | } | |
1449 | ||
1450 | rc = dev->ops->se_io(dev, se_idx, apdu, | |
1451 | apdu_length, cb, cb_context); | |
1452 | ||
1453 | error: | |
1454 | device_unlock(&dev->dev); | |
1455 | return rc; | |
1456 | } | |
1457 | ||
5ce3f32b SO |
1458 | struct se_io_ctx { |
1459 | u32 dev_idx; | |
1460 | u32 se_idx; | |
1461 | }; | |
1462 | ||
ddc1a70b | 1463 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1464 | { |
1465 | struct se_io_ctx *ctx = context; | |
1466 | struct sk_buff *msg; | |
1467 | void *hdr; | |
1468 | ||
1469 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1470 | if (!msg) { | |
1471 | kfree(ctx); | |
1472 | return; | |
1473 | } | |
1474 | ||
1475 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1476 | NFC_CMD_SE_IO); | |
1477 | if (!hdr) | |
1478 | goto free_msg; | |
1479 | ||
1480 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1481 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1482 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1483 | goto nla_put_failure; | |
1484 | ||
1485 | genlmsg_end(msg, hdr); | |
1486 | ||
2a94fe48 | 1487 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1488 | |
1489 | kfree(ctx); | |
1490 | ||
1491 | return; | |
1492 | ||
1493 | nla_put_failure: | |
5ce3f32b SO |
1494 | free_msg: |
1495 | nlmsg_free(msg); | |
1496 | kfree(ctx); | |
1497 | ||
1498 | return; | |
1499 | } | |
1500 | ||
1501 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1502 | { | |
1503 | struct nfc_dev *dev; | |
1504 | struct se_io_ctx *ctx; | |
1505 | u32 dev_idx, se_idx; | |
1506 | u8 *apdu; | |
1507 | size_t apdu_len; | |
1508 | ||
1509 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1510 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1511 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1512 | return -EINVAL; | |
1513 | ||
1514 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1515 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1516 | ||
1517 | dev = nfc_get_device(dev_idx); | |
1518 | if (!dev) | |
1519 | return -ENODEV; | |
1520 | ||
1521 | if (!dev->ops || !dev->ops->se_io) | |
1522 | return -ENOTSUPP; | |
1523 | ||
1524 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
1525 | if (apdu_len == 0) | |
1526 | return -EINVAL; | |
1527 | ||
1528 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
1529 | if (!apdu) | |
1530 | return -EINVAL; | |
1531 | ||
1532 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
1533 | if (!ctx) | |
1534 | return -ENOMEM; | |
1535 | ||
1536 | ctx->dev_idx = dev_idx; | |
1537 | ctx->se_idx = se_idx; | |
1538 | ||
cd96db6f | 1539 | return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); |
5ce3f32b SO |
1540 | } |
1541 | ||
9e58095f SO |
1542 | static int nfc_genl_vendor_cmd(struct sk_buff *skb, |
1543 | struct genl_info *info) | |
1544 | { | |
1545 | struct nfc_dev *dev; | |
1546 | struct nfc_vendor_cmd *cmd; | |
1547 | u32 dev_idx, vid, subcmd; | |
1548 | u8 *data; | |
1549 | size_t data_len; | |
29e76924 | 1550 | int i, err; |
9e58095f SO |
1551 | |
1552 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1553 | !info->attrs[NFC_ATTR_VENDOR_ID] || | |
1554 | !info->attrs[NFC_ATTR_VENDOR_SUBCMD]) | |
1555 | return -EINVAL; | |
1556 | ||
1557 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1558 | vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]); | |
1559 | subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]); | |
1560 | ||
1561 | dev = nfc_get_device(dev_idx); | |
1562 | if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds) | |
1563 | return -ENODEV; | |
1564 | ||
fe202fe9 CR |
1565 | if (info->attrs[NFC_ATTR_VENDOR_DATA]) { |
1566 | data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]); | |
9e58095f SO |
1567 | data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]); |
1568 | if (data_len == 0) | |
1569 | return -EINVAL; | |
1570 | } else { | |
adca3c38 | 1571 | data = NULL; |
9e58095f SO |
1572 | data_len = 0; |
1573 | } | |
1574 | ||
1575 | for (i = 0; i < dev->n_vendor_cmds; i++) { | |
1576 | cmd = &dev->vendor_cmds[i]; | |
1577 | ||
1578 | if (cmd->vendor_id != vid || cmd->subcmd != subcmd) | |
1579 | continue; | |
1580 | ||
29e76924 CR |
1581 | dev->cur_cmd_info = info; |
1582 | err = cmd->doit(dev, data, data_len); | |
1583 | dev->cur_cmd_info = NULL; | |
1584 | return err; | |
9e58095f SO |
1585 | } |
1586 | ||
1587 | return -EOPNOTSUPP; | |
1588 | } | |
1589 | ||
29e76924 CR |
1590 | /* message building helper */ |
1591 | static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq, | |
1592 | int flags, u8 cmd) | |
1593 | { | |
1594 | /* since there is no private header just add the generic one */ | |
1595 | return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd); | |
1596 | } | |
1597 | ||
1598 | static struct sk_buff * | |
1599 | __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen, | |
1600 | u32 portid, u32 seq, | |
1601 | enum nfc_attrs attr, | |
1602 | u32 oui, u32 subcmd, gfp_t gfp) | |
1603 | { | |
1604 | struct sk_buff *skb; | |
1605 | void *hdr; | |
1606 | ||
1607 | skb = nlmsg_new(approxlen + 100, gfp); | |
1608 | if (!skb) | |
1609 | return NULL; | |
1610 | ||
1611 | hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR); | |
1612 | if (!hdr) { | |
1613 | kfree_skb(skb); | |
1614 | return NULL; | |
1615 | } | |
1616 | ||
1617 | if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
1618 | goto nla_put_failure; | |
1619 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui)) | |
1620 | goto nla_put_failure; | |
1621 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd)) | |
1622 | goto nla_put_failure; | |
1623 | ||
1624 | ((void **)skb->cb)[0] = dev; | |
1625 | ((void **)skb->cb)[1] = hdr; | |
1626 | ||
1627 | return skb; | |
1628 | ||
1629 | nla_put_failure: | |
1630 | kfree_skb(skb); | |
1631 | return NULL; | |
1632 | } | |
1633 | ||
1634 | struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev, | |
1635 | enum nfc_attrs attr, | |
1636 | u32 oui, u32 subcmd, | |
1637 | int approxlen) | |
1638 | { | |
1639 | if (WARN_ON(!dev->cur_cmd_info)) | |
1640 | return NULL; | |
1641 | ||
1642 | return __nfc_alloc_vendor_cmd_skb(dev, approxlen, | |
1643 | dev->cur_cmd_info->snd_portid, | |
1644 | dev->cur_cmd_info->snd_seq, attr, | |
1645 | oui, subcmd, GFP_KERNEL); | |
1646 | } | |
1647 | EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb); | |
1648 | ||
1649 | int nfc_vendor_cmd_reply(struct sk_buff *skb) | |
1650 | { | |
1651 | struct nfc_dev *dev = ((void **)skb->cb)[0]; | |
1652 | void *hdr = ((void **)skb->cb)[1]; | |
1653 | ||
1654 | /* clear CB data for netlink core to own from now on */ | |
1655 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1656 | ||
1657 | if (WARN_ON(!dev->cur_cmd_info)) { | |
1658 | kfree_skb(skb); | |
1659 | return -EINVAL; | |
1660 | } | |
1661 | ||
1662 | genlmsg_end(skb, hdr); | |
1663 | return genlmsg_reply(skb, dev->cur_cmd_info); | |
1664 | } | |
1665 | EXPORT_SYMBOL(nfc_vendor_cmd_reply); | |
1666 | ||
4534de83 | 1667 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1668 | { |
1669 | .cmd = NFC_CMD_GET_DEVICE, | |
1670 | .doit = nfc_genl_get_device, | |
1671 | .dumpit = nfc_genl_dump_devices, | |
1672 | .done = nfc_genl_dump_devices_done, | |
1673 | .policy = nfc_genl_policy, | |
8b3fe7b5 IE |
1674 | }, |
1675 | { | |
1676 | .cmd = NFC_CMD_DEV_UP, | |
1677 | .doit = nfc_genl_dev_up, | |
1678 | .policy = nfc_genl_policy, | |
1679 | }, | |
1680 | { | |
1681 | .cmd = NFC_CMD_DEV_DOWN, | |
1682 | .doit = nfc_genl_dev_down, | |
1683 | .policy = nfc_genl_policy, | |
4d12b8b1 LRV |
1684 | }, |
1685 | { | |
1686 | .cmd = NFC_CMD_START_POLL, | |
1687 | .doit = nfc_genl_start_poll, | |
1688 | .policy = nfc_genl_policy, | |
1689 | }, | |
1690 | { | |
1691 | .cmd = NFC_CMD_STOP_POLL, | |
1692 | .doit = nfc_genl_stop_poll, | |
1693 | .policy = nfc_genl_policy, | |
1694 | }, | |
1ed28f61 SO |
1695 | { |
1696 | .cmd = NFC_CMD_DEP_LINK_UP, | |
1697 | .doit = nfc_genl_dep_link_up, | |
1698 | .policy = nfc_genl_policy, | |
1699 | }, | |
1700 | { | |
1701 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
1702 | .doit = nfc_genl_dep_link_down, | |
1703 | .policy = nfc_genl_policy, | |
1704 | }, | |
4d12b8b1 LRV |
1705 | { |
1706 | .cmd = NFC_CMD_GET_TARGET, | |
1707 | .dumpit = nfc_genl_dump_targets, | |
1708 | .done = nfc_genl_dump_targets_done, | |
1709 | .policy = nfc_genl_policy, | |
1710 | }, | |
52feb444 TE |
1711 | { |
1712 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
1713 | .doit = nfc_genl_llc_get_params, | |
1714 | .policy = nfc_genl_policy, | |
1715 | }, | |
1716 | { | |
1717 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
1718 | .doit = nfc_genl_llc_set_params, | |
1719 | .policy = nfc_genl_policy, | |
1720 | }, | |
d9b8d8e1 TE |
1721 | { |
1722 | .cmd = NFC_CMD_LLC_SDREQ, | |
1723 | .doit = nfc_genl_llc_sdreq, | |
1724 | .policy = nfc_genl_policy, | |
1725 | }, | |
9674da87 | 1726 | { |
9ea7187c SO |
1727 | .cmd = NFC_CMD_FW_DOWNLOAD, |
1728 | .doit = nfc_genl_fw_download, | |
9674da87 EL |
1729 | .policy = nfc_genl_policy, |
1730 | }, | |
be085653 SO |
1731 | { |
1732 | .cmd = NFC_CMD_ENABLE_SE, | |
1733 | .doit = nfc_genl_enable_se, | |
1734 | .policy = nfc_genl_policy, | |
1735 | }, | |
1736 | { | |
1737 | .cmd = NFC_CMD_DISABLE_SE, | |
1738 | .doit = nfc_genl_disable_se, | |
1739 | .policy = nfc_genl_policy, | |
1740 | }, | |
ac22ac46 SO |
1741 | { |
1742 | .cmd = NFC_CMD_GET_SE, | |
1743 | .dumpit = nfc_genl_dump_ses, | |
1744 | .done = nfc_genl_dump_ses_done, | |
1745 | .policy = nfc_genl_policy, | |
1746 | }, | |
5ce3f32b SO |
1747 | { |
1748 | .cmd = NFC_CMD_SE_IO, | |
1749 | .doit = nfc_genl_se_io, | |
1750 | .policy = nfc_genl_policy, | |
1751 | }, | |
3682f49f CR |
1752 | { |
1753 | .cmd = NFC_CMD_ACTIVATE_TARGET, | |
1754 | .doit = nfc_genl_activate_target, | |
1755 | .policy = nfc_genl_policy, | |
1756 | }, | |
9e58095f SO |
1757 | { |
1758 | .cmd = NFC_CMD_VENDOR, | |
1759 | .doit = nfc_genl_vendor_cmd, | |
1760 | .policy = nfc_genl_policy, | |
1761 | }, | |
4d63adfe MG |
1762 | { |
1763 | .cmd = NFC_CMD_DEACTIVATE_TARGET, | |
1764 | .doit = nfc_genl_deactivate_target, | |
1765 | .policy = nfc_genl_policy, | |
1766 | }, | |
4d12b8b1 LRV |
1767 | }; |
1768 | ||
56989f6d | 1769 | static struct genl_family nfc_genl_family __ro_after_init = { |
489111e5 JB |
1770 | .hdrsize = 0, |
1771 | .name = NFC_GENL_NAME, | |
1772 | .version = NFC_GENL_VERSION, | |
1773 | .maxattr = NFC_ATTR_MAX, | |
1774 | .module = THIS_MODULE, | |
1775 | .ops = nfc_genl_ops, | |
1776 | .n_ops = ARRAY_SIZE(nfc_genl_ops), | |
1777 | .mcgrps = nfc_genl_mcgrps, | |
1778 | .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps), | |
1779 | }; | |
1780 | ||
3c0cc8aa SJ |
1781 | |
1782 | struct urelease_work { | |
1783 | struct work_struct w; | |
65bc4f93 | 1784 | u32 portid; |
3c0cc8aa SJ |
1785 | }; |
1786 | ||
1787 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1788 | { |
3c0cc8aa | 1789 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1790 | struct class_dev_iter iter; |
1791 | struct nfc_dev *dev; | |
1792 | ||
c487606f | 1793 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1794 | |
3c0cc8aa | 1795 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1796 | |
1797 | nfc_device_iter_init(&iter); | |
1798 | dev = nfc_device_iter_next(&iter); | |
1799 | ||
1800 | while (dev) { | |
3c0cc8aa SJ |
1801 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1802 | ||
c487606f | 1803 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1804 | nfc_stop_poll(dev); |
15e47304 | 1805 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1806 | } |
3c0cc8aa SJ |
1807 | |
1808 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1809 | ||
4d12b8b1 LRV |
1810 | dev = nfc_device_iter_next(&iter); |
1811 | } | |
1812 | ||
1813 | nfc_device_iter_exit(&iter); | |
1814 | ||
3c0cc8aa SJ |
1815 | mutex_unlock(&nfc_devlist_mutex); |
1816 | ||
1817 | kfree(w); | |
1818 | } | |
1819 | ||
1820 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1821 | unsigned long event, void *ptr) | |
1822 | { | |
1823 | struct netlink_notify *n = ptr; | |
1824 | struct urelease_work *w; | |
1825 | ||
1826 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1827 | goto out; | |
1828 | ||
c487606f | 1829 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1830 | |
1831 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1832 | if (w) { | |
1833 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1834 | w->portid = n->portid; |
3c0cc8aa SJ |
1835 | schedule_work((struct work_struct *) w); |
1836 | } | |
1837 | ||
4d12b8b1 LRV |
1838 | out: |
1839 | return NOTIFY_DONE; | |
1840 | } | |
1841 | ||
1842 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1843 | { | |
15e47304 | 1844 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1845 | mutex_init(&genl_data->genl_data_mutex); |
1846 | } | |
1847 | ||
1848 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1849 | { | |
1850 | mutex_destroy(&genl_data->genl_data_mutex); | |
1851 | } | |
1852 | ||
1853 | static struct notifier_block nl_notifier = { | |
1854 | .notifier_call = nfc_genl_rcv_nl_event, | |
1855 | }; | |
1856 | ||
1857 | /** | |
1858 | * nfc_genl_init() - Initialize netlink interface | |
1859 | * | |
1860 | * This initialization function registers the nfc netlink family. | |
1861 | */ | |
1862 | int __init nfc_genl_init(void) | |
1863 | { | |
1864 | int rc; | |
1865 | ||
489111e5 | 1866 | rc = genl_register_family(&nfc_genl_family); |
4d12b8b1 LRV |
1867 | if (rc) |
1868 | return rc; | |
1869 | ||
4d12b8b1 LRV |
1870 | netlink_register_notifier(&nl_notifier); |
1871 | ||
2a94fe48 | 1872 | return 0; |
4d12b8b1 LRV |
1873 | } |
1874 | ||
1875 | /** | |
1876 | * nfc_genl_exit() - Deinitialize netlink interface | |
1877 | * | |
1878 | * This exit function unregisters the nfc netlink family. | |
1879 | */ | |
1880 | void nfc_genl_exit(void) | |
1881 | { | |
1882 | netlink_unregister_notifier(&nl_notifier); | |
1883 | genl_unregister_family(&nfc_genl_family); | |
1884 | } |