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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, | |
c90c39da | 122 | attrbuf, nfc_genl_family.maxattr, nfc_genl_policy); |
4d12b8b1 LRV |
123 | if (rc < 0) |
124 | return ERR_PTR(rc); | |
125 | ||
c90c39da | 126 | if (!attrbuf[NFC_ATTR_DEVICE_INDEX]) |
4d12b8b1 LRV |
127 | return ERR_PTR(-EINVAL); |
128 | ||
c90c39da | 129 | idx = nla_get_u32(attrbuf[NFC_ATTR_DEVICE_INDEX]); |
4d12b8b1 LRV |
130 | |
131 | dev = nfc_get_device(idx); | |
132 | if (!dev) | |
133 | return ERR_PTR(-ENODEV); | |
134 | ||
135 | return dev; | |
136 | } | |
137 | ||
138 | static int nfc_genl_dump_targets(struct sk_buff *skb, | |
0a40acb2 | 139 | struct netlink_callback *cb) |
4d12b8b1 LRV |
140 | { |
141 | int i = cb->args[0]; | |
142 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
143 | int rc; | |
144 | ||
4d12b8b1 LRV |
145 | if (!dev) { |
146 | dev = __get_device_from_cb(cb); | |
147 | if (IS_ERR(dev)) | |
148 | return PTR_ERR(dev); | |
149 | ||
150 | cb->args[1] = (long) dev; | |
151 | } | |
152 | ||
d4ccb132 | 153 | device_lock(&dev->dev); |
4d12b8b1 LRV |
154 | |
155 | cb->seq = dev->targets_generation; | |
156 | ||
157 | while (i < dev->n_targets) { | |
158 | rc = nfc_genl_send_target(skb, &dev->targets[i], cb, | |
0a40acb2 | 159 | NLM_F_MULTI); |
4d12b8b1 LRV |
160 | if (rc < 0) |
161 | break; | |
162 | ||
163 | i++; | |
164 | } | |
165 | ||
d4ccb132 | 166 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
167 | |
168 | cb->args[0] = i; | |
169 | ||
170 | return skb->len; | |
171 | } | |
172 | ||
173 | static int nfc_genl_dump_targets_done(struct netlink_callback *cb) | |
174 | { | |
175 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
176 | ||
4d12b8b1 LRV |
177 | if (dev) |
178 | nfc_put_device(dev); | |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
183 | int nfc_genl_targets_found(struct nfc_dev *dev) | |
184 | { | |
185 | struct sk_buff *msg; | |
186 | void *hdr; | |
187 | ||
15e47304 | 188 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 189 | |
58050fce | 190 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
4d12b8b1 LRV |
191 | if (!msg) |
192 | return -ENOMEM; | |
193 | ||
194 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 195 | NFC_EVENT_TARGETS_FOUND); |
4d12b8b1 LRV |
196 | if (!hdr) |
197 | goto free_msg; | |
198 | ||
1e6428d8 DM |
199 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
200 | goto nla_put_failure; | |
4d12b8b1 LRV |
201 | |
202 | genlmsg_end(msg, hdr); | |
203 | ||
2a94fe48 | 204 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
4d12b8b1 LRV |
205 | |
206 | nla_put_failure: | |
207 | genlmsg_cancel(msg, hdr); | |
208 | free_msg: | |
209 | nlmsg_free(msg); | |
210 | return -EMSGSIZE; | |
211 | } | |
212 | ||
8112a5c9 SO |
213 | int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) |
214 | { | |
215 | struct sk_buff *msg; | |
216 | void *hdr; | |
217 | ||
58050fce | 218 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
8112a5c9 SO |
219 | if (!msg) |
220 | return -ENOMEM; | |
221 | ||
222 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
223 | NFC_EVENT_TARGET_LOST); | |
224 | if (!hdr) | |
225 | goto free_msg; | |
226 | ||
59ef43e6 JL |
227 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
228 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
229 | goto nla_put_failure; | |
8112a5c9 SO |
230 | |
231 | genlmsg_end(msg, hdr); | |
232 | ||
2a94fe48 | 233 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
8112a5c9 SO |
234 | |
235 | return 0; | |
236 | ||
fc40a8c1 SO |
237 | nla_put_failure: |
238 | genlmsg_cancel(msg, hdr); | |
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: | |
270 | genlmsg_cancel(msg, hdr); | |
271 | free_msg: | |
272 | nlmsg_free(msg); | |
273 | return -EMSGSIZE; | |
274 | } | |
275 | ||
276 | int nfc_genl_tm_deactivated(struct nfc_dev *dev) | |
277 | { | |
278 | struct sk_buff *msg; | |
279 | void *hdr; | |
280 | ||
58050fce | 281 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
282 | if (!msg) |
283 | return -ENOMEM; | |
284 | ||
285 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
286 | NFC_EVENT_TM_DEACTIVATED); | |
287 | if (!hdr) | |
288 | goto free_msg; | |
289 | ||
290 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
291 | goto nla_put_failure; | |
292 | ||
293 | genlmsg_end(msg, hdr); | |
294 | ||
2a94fe48 | 295 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
296 | |
297 | return 0; | |
298 | ||
8112a5c9 SO |
299 | nla_put_failure: |
300 | genlmsg_cancel(msg, hdr); | |
301 | free_msg: | |
302 | nlmsg_free(msg); | |
303 | return -EMSGSIZE; | |
304 | } | |
305 | ||
4d12b8b1 LRV |
306 | int nfc_genl_device_added(struct nfc_dev *dev) |
307 | { | |
308 | struct sk_buff *msg; | |
309 | void *hdr; | |
310 | ||
58050fce | 311 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
312 | if (!msg) |
313 | return -ENOMEM; | |
314 | ||
315 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 316 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
317 | if (!hdr) |
318 | goto free_msg; | |
319 | ||
1e6428d8 DM |
320 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
321 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
322 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
323 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up)) | |
324 | goto nla_put_failure; | |
4d12b8b1 LRV |
325 | |
326 | genlmsg_end(msg, hdr); | |
327 | ||
2a94fe48 | 328 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
329 | |
330 | return 0; | |
331 | ||
332 | nla_put_failure: | |
333 | genlmsg_cancel(msg, hdr); | |
334 | free_msg: | |
335 | nlmsg_free(msg); | |
336 | return -EMSGSIZE; | |
337 | } | |
338 | ||
339 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
340 | { | |
341 | struct sk_buff *msg; | |
342 | void *hdr; | |
343 | ||
58050fce | 344 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
345 | if (!msg) |
346 | return -ENOMEM; | |
347 | ||
348 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 349 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
350 | if (!hdr) |
351 | goto free_msg; | |
352 | ||
1e6428d8 DM |
353 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
354 | goto nla_put_failure; | |
4d12b8b1 LRV |
355 | |
356 | genlmsg_end(msg, hdr); | |
357 | ||
2a94fe48 | 358 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
359 | |
360 | return 0; | |
361 | ||
362 | nla_put_failure: | |
363 | genlmsg_cancel(msg, hdr); | |
364 | free_msg: | |
365 | nlmsg_free(msg); | |
366 | return -EMSGSIZE; | |
367 | } | |
368 | ||
d9b8d8e1 TE |
369 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
370 | { | |
371 | struct sk_buff *msg; | |
372 | struct nlattr *sdp_attr, *uri_attr; | |
373 | struct nfc_llcp_sdp_tlv *sdres; | |
374 | struct hlist_node *n; | |
375 | void *hdr; | |
376 | int rc = -EMSGSIZE; | |
377 | int i; | |
378 | ||
379 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
380 | if (!msg) | |
381 | return -ENOMEM; | |
382 | ||
383 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
384 | NFC_EVENT_LLC_SDRES); | |
385 | if (!hdr) | |
386 | goto free_msg; | |
387 | ||
388 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
389 | goto nla_put_failure; | |
390 | ||
391 | sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP); | |
392 | if (sdp_attr == NULL) { | |
393 | rc = -ENOMEM; | |
394 | goto nla_put_failure; | |
395 | } | |
396 | ||
397 | i = 1; | |
398 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
399 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
400 | ||
401 | uri_attr = nla_nest_start(msg, i++); | |
402 | if (uri_attr == NULL) { | |
403 | rc = -ENOMEM; | |
404 | goto nla_put_failure; | |
405 | } | |
406 | ||
407 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
408 | goto nla_put_failure; | |
409 | ||
410 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
411 | goto nla_put_failure; | |
412 | ||
413 | nla_nest_end(msg, uri_attr); | |
414 | ||
415 | hlist_del(&sdres->node); | |
416 | ||
417 | nfc_llcp_free_sdp_tlv(sdres); | |
418 | } | |
419 | ||
420 | nla_nest_end(msg, sdp_attr); | |
421 | ||
422 | genlmsg_end(msg, hdr); | |
423 | ||
2a94fe48 | 424 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
d9b8d8e1 TE |
425 | |
426 | nla_put_failure: | |
427 | genlmsg_cancel(msg, hdr); | |
428 | ||
429 | free_msg: | |
430 | nlmsg_free(msg); | |
431 | ||
432 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
433 | ||
434 | return rc; | |
435 | } | |
436 | ||
2757c372 SO |
437 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
438 | { | |
439 | struct sk_buff *msg; | |
440 | void *hdr; | |
441 | ||
442 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
443 | if (!msg) | |
444 | return -ENOMEM; | |
445 | ||
446 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
447 | NFC_EVENT_SE_ADDED); | |
448 | if (!hdr) | |
449 | goto free_msg; | |
450 | ||
451 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
452 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
453 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
454 | goto nla_put_failure; | |
455 | ||
456 | genlmsg_end(msg, hdr); | |
457 | ||
2a94fe48 | 458 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
459 | |
460 | return 0; | |
461 | ||
462 | nla_put_failure: | |
463 | genlmsg_cancel(msg, hdr); | |
464 | free_msg: | |
465 | nlmsg_free(msg); | |
466 | return -EMSGSIZE; | |
467 | } | |
468 | ||
469 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
470 | { | |
471 | struct sk_buff *msg; | |
472 | void *hdr; | |
473 | ||
474 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
475 | if (!msg) | |
476 | return -ENOMEM; | |
477 | ||
478 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
479 | NFC_EVENT_SE_REMOVED); | |
480 | if (!hdr) | |
481 | goto free_msg; | |
482 | ||
483 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
484 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
485 | goto nla_put_failure; | |
486 | ||
487 | genlmsg_end(msg, hdr); | |
488 | ||
2a94fe48 | 489 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
490 | |
491 | return 0; | |
492 | ||
493 | nla_put_failure: | |
494 | genlmsg_cancel(msg, hdr); | |
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: | |
539 | genlmsg_cancel(msg, hdr); | |
540 | free_msg: | |
541 | /* evt_transaction is no more used */ | |
542 | devm_kfree(&dev->dev, evt_transaction); | |
543 | nlmsg_free(msg); | |
544 | return -EMSGSIZE; | |
545 | } | |
546 | ||
9afec6d3 CR |
547 | int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx) |
548 | { | |
549 | struct nfc_se *se; | |
550 | struct sk_buff *msg; | |
551 | void *hdr; | |
552 | ||
553 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
554 | if (!msg) | |
555 | return -ENOMEM; | |
556 | ||
557 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
558 | NFC_EVENT_SE_CONNECTIVITY); | |
559 | if (!hdr) | |
560 | goto free_msg; | |
561 | ||
562 | se = nfc_find_se(dev, se_idx); | |
563 | if (!se) | |
564 | goto free_msg; | |
565 | ||
566 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
567 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
568 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
569 | goto nla_put_failure; | |
570 | ||
571 | genlmsg_end(msg, hdr); | |
572 | ||
573 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
574 | ||
575 | return 0; | |
576 | ||
577 | nla_put_failure: | |
578 | genlmsg_cancel(msg, hdr); | |
579 | free_msg: | |
580 | nlmsg_free(msg); | |
581 | return -EMSGSIZE; | |
582 | } | |
583 | ||
4d12b8b1 | 584 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 585 | u32 portid, u32 seq, |
0a40acb2 SO |
586 | struct netlink_callback *cb, |
587 | int flags) | |
4d12b8b1 LRV |
588 | { |
589 | void *hdr; | |
590 | ||
15e47304 | 591 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 592 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
593 | if (!hdr) |
594 | return -EMSGSIZE; | |
595 | ||
596 | if (cb) | |
597 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
598 | ||
1e6428d8 DM |
599 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
600 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
601 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
7ad39395 TE |
602 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || |
603 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
1e6428d8 | 604 | goto nla_put_failure; |
4d12b8b1 | 605 | |
053c095a JB |
606 | genlmsg_end(msg, hdr); |
607 | return 0; | |
4d12b8b1 LRV |
608 | |
609 | nla_put_failure: | |
610 | genlmsg_cancel(msg, hdr); | |
611 | return -EMSGSIZE; | |
612 | } | |
613 | ||
614 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 615 | struct netlink_callback *cb) |
4d12b8b1 LRV |
616 | { |
617 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
618 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
619 | bool first_call = false; | |
620 | ||
4d12b8b1 LRV |
621 | if (!iter) { |
622 | first_call = true; | |
623 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
624 | if (!iter) | |
625 | return -ENOMEM; | |
626 | cb->args[0] = (long) iter; | |
627 | } | |
628 | ||
629 | mutex_lock(&nfc_devlist_mutex); | |
630 | ||
631 | cb->seq = nfc_devlist_generation; | |
632 | ||
633 | if (first_call) { | |
634 | nfc_device_iter_init(iter); | |
635 | dev = nfc_device_iter_next(iter); | |
636 | } | |
637 | ||
638 | while (dev) { | |
639 | int rc; | |
640 | ||
15e47304 | 641 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 642 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
643 | if (rc < 0) |
644 | break; | |
645 | ||
646 | dev = nfc_device_iter_next(iter); | |
647 | } | |
648 | ||
649 | mutex_unlock(&nfc_devlist_mutex); | |
650 | ||
651 | cb->args[1] = (long) dev; | |
652 | ||
653 | return skb->len; | |
654 | } | |
655 | ||
656 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
657 | { | |
658 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
659 | ||
4d12b8b1 LRV |
660 | nfc_device_iter_exit(iter); |
661 | kfree(iter); | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
1ed28f61 | 666 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 667 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
668 | { |
669 | struct sk_buff *msg; | |
670 | void *hdr; | |
671 | ||
672 | pr_debug("DEP link is up\n"); | |
673 | ||
58050fce | 674 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
675 | if (!msg) |
676 | return -ENOMEM; | |
677 | ||
0a40acb2 | 678 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
679 | if (!hdr) |
680 | goto free_msg; | |
681 | ||
1e6428d8 DM |
682 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
683 | goto nla_put_failure; | |
684 | if (rf_mode == NFC_RF_INITIATOR && | |
685 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
686 | goto nla_put_failure; | |
687 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
688 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
689 | goto nla_put_failure; | |
1ed28f61 SO |
690 | |
691 | genlmsg_end(msg, hdr); | |
692 | ||
693 | dev->dep_link_up = true; | |
694 | ||
2a94fe48 | 695 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
696 | |
697 | return 0; | |
698 | ||
699 | nla_put_failure: | |
700 | genlmsg_cancel(msg, hdr); | |
701 | free_msg: | |
702 | nlmsg_free(msg); | |
703 | return -EMSGSIZE; | |
704 | } | |
705 | ||
706 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
707 | { | |
708 | struct sk_buff *msg; | |
709 | void *hdr; | |
710 | ||
711 | pr_debug("DEP link is down\n"); | |
712 | ||
58050fce | 713 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
714 | if (!msg) |
715 | return -ENOMEM; | |
716 | ||
717 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 718 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
719 | if (!hdr) |
720 | goto free_msg; | |
721 | ||
1e6428d8 DM |
722 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
723 | goto nla_put_failure; | |
1ed28f61 SO |
724 | |
725 | genlmsg_end(msg, hdr); | |
726 | ||
2a94fe48 | 727 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
728 | |
729 | return 0; | |
730 | ||
731 | nla_put_failure: | |
732 | genlmsg_cancel(msg, hdr); | |
733 | free_msg: | |
734 | nlmsg_free(msg); | |
735 | return -EMSGSIZE; | |
736 | } | |
737 | ||
4d12b8b1 LRV |
738 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
739 | { | |
740 | struct sk_buff *msg; | |
741 | struct nfc_dev *dev; | |
742 | u32 idx; | |
743 | int rc = -ENOBUFS; | |
744 | ||
4d12b8b1 LRV |
745 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
746 | return -EINVAL; | |
747 | ||
748 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
749 | ||
750 | dev = nfc_get_device(idx); | |
751 | if (!dev) | |
752 | return -ENODEV; | |
753 | ||
58050fce | 754 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
755 | if (!msg) { |
756 | rc = -ENOMEM; | |
757 | goto out_putdev; | |
758 | } | |
759 | ||
15e47304 | 760 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 761 | NULL, 0); |
4d12b8b1 LRV |
762 | if (rc < 0) |
763 | goto out_free; | |
764 | ||
765 | nfc_put_device(dev); | |
766 | ||
767 | return genlmsg_reply(msg, info); | |
768 | ||
769 | out_free: | |
770 | nlmsg_free(msg); | |
771 | out_putdev: | |
772 | nfc_put_device(dev); | |
773 | return rc; | |
774 | } | |
775 | ||
8b3fe7b5 IE |
776 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
777 | { | |
778 | struct nfc_dev *dev; | |
779 | int rc; | |
780 | u32 idx; | |
781 | ||
8b3fe7b5 IE |
782 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
783 | return -EINVAL; | |
784 | ||
785 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
786 | ||
787 | dev = nfc_get_device(idx); | |
788 | if (!dev) | |
789 | return -ENODEV; | |
790 | ||
791 | rc = nfc_dev_up(dev); | |
792 | ||
793 | nfc_put_device(dev); | |
794 | return rc; | |
795 | } | |
796 | ||
797 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
798 | { | |
799 | struct nfc_dev *dev; | |
800 | int rc; | |
801 | u32 idx; | |
802 | ||
8b3fe7b5 IE |
803 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
804 | return -EINVAL; | |
805 | ||
806 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
807 | ||
808 | dev = nfc_get_device(idx); | |
809 | if (!dev) | |
810 | return -ENODEV; | |
811 | ||
812 | rc = nfc_dev_down(dev); | |
813 | ||
814 | nfc_put_device(dev); | |
815 | return rc; | |
816 | } | |
817 | ||
4d12b8b1 LRV |
818 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
819 | { | |
820 | struct nfc_dev *dev; | |
821 | int rc; | |
822 | u32 idx; | |
fe7c5800 | 823 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 824 | |
1ed28f61 SO |
825 | pr_debug("Poll start\n"); |
826 | ||
4d12b8b1 | 827 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
828 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
829 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 830 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
831 | return -EINVAL; |
832 | ||
833 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
834 | |
835 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
836 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
837 | |
838 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
839 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
840 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
841 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
842 | |
843 | dev = nfc_get_device(idx); | |
844 | if (!dev) | |
845 | return -ENODEV; | |
846 | ||
847 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
848 | ||
fe7c5800 | 849 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 850 | if (!rc) |
15e47304 | 851 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
852 | |
853 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
854 | ||
855 | nfc_put_device(dev); | |
856 | return rc; | |
857 | } | |
858 | ||
859 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
860 | { | |
861 | struct nfc_dev *dev; | |
862 | int rc; | |
863 | u32 idx; | |
864 | ||
4d12b8b1 LRV |
865 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
866 | return -EINVAL; | |
867 | ||
868 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
869 | ||
870 | dev = nfc_get_device(idx); | |
871 | if (!dev) | |
872 | return -ENODEV; | |
873 | ||
a831b913 SO |
874 | device_lock(&dev->dev); |
875 | ||
876 | if (!dev->polling) { | |
877 | device_unlock(&dev->dev); | |
878 | return -EINVAL; | |
879 | } | |
880 | ||
881 | device_unlock(&dev->dev); | |
882 | ||
4d12b8b1 LRV |
883 | mutex_lock(&dev->genl_data.genl_data_mutex); |
884 | ||
15e47304 | 885 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
886 | rc = -EBUSY; |
887 | goto out; | |
888 | } | |
889 | ||
890 | rc = nfc_stop_poll(dev); | |
15e47304 | 891 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
892 | |
893 | out: | |
894 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
895 | nfc_put_device(dev); | |
896 | return rc; | |
897 | } | |
898 | ||
3682f49f CR |
899 | static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info) |
900 | { | |
901 | struct nfc_dev *dev; | |
902 | u32 device_idx, target_idx, protocol; | |
903 | int rc; | |
904 | ||
905 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
906 | return -EINVAL; | |
907 | ||
908 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
909 | ||
910 | dev = nfc_get_device(device_idx); | |
911 | if (!dev) | |
912 | return -ENODEV; | |
913 | ||
914 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
915 | protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
916 | ||
96d4581f | 917 | nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); |
3682f49f CR |
918 | rc = nfc_activate_target(dev, target_idx, protocol); |
919 | ||
920 | nfc_put_device(dev); | |
921 | return 0; | |
922 | } | |
923 | ||
1ed28f61 SO |
924 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
925 | { | |
926 | struct nfc_dev *dev; | |
927 | int rc, tgt_idx; | |
928 | u32 idx; | |
47807d3d | 929 | u8 comm; |
1ed28f61 SO |
930 | |
931 | pr_debug("DEP link up\n"); | |
932 | ||
933 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 934 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
935 | return -EINVAL; |
936 | ||
937 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
938 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
939 | tgt_idx = NFC_TARGET_IDX_ANY; | |
940 | else | |
941 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
942 | ||
943 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
944 | |
945 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
946 | return -EINVAL; | |
947 | ||
1ed28f61 SO |
948 | dev = nfc_get_device(idx); |
949 | if (!dev) | |
950 | return -ENODEV; | |
951 | ||
47807d3d | 952 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
953 | |
954 | nfc_put_device(dev); | |
955 | ||
956 | return rc; | |
957 | } | |
958 | ||
959 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
960 | { | |
961 | struct nfc_dev *dev; | |
962 | int rc; | |
963 | u32 idx; | |
964 | ||
965 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
966 | return -EINVAL; | |
967 | ||
968 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
969 | ||
970 | dev = nfc_get_device(idx); | |
971 | if (!dev) | |
972 | return -ENODEV; | |
973 | ||
974 | rc = nfc_dep_link_down(dev); | |
975 | ||
976 | nfc_put_device(dev); | |
977 | return rc; | |
978 | } | |
979 | ||
52feb444 TE |
980 | static int nfc_genl_send_params(struct sk_buff *msg, |
981 | struct nfc_llcp_local *local, | |
982 | u32 portid, u32 seq) | |
983 | { | |
984 | void *hdr; | |
985 | ||
986 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
987 | NFC_CMD_LLC_GET_PARAMS); | |
988 | if (!hdr) | |
989 | return -EMSGSIZE; | |
990 | ||
991 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
992 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
993 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
994 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
995 | goto nla_put_failure; | |
996 | ||
053c095a JB |
997 | genlmsg_end(msg, hdr); |
998 | return 0; | |
52feb444 TE |
999 | |
1000 | nla_put_failure: | |
1001 | ||
1002 | genlmsg_cancel(msg, hdr); | |
1003 | return -EMSGSIZE; | |
1004 | } | |
1005 | ||
1006 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
1007 | { | |
1008 | struct nfc_dev *dev; | |
1009 | struct nfc_llcp_local *local; | |
1010 | int rc = 0; | |
1011 | struct sk_buff *msg = NULL; | |
1012 | u32 idx; | |
1013 | ||
1014 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1015 | return -EINVAL; | |
1016 | ||
1017 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1018 | ||
1019 | dev = nfc_get_device(idx); | |
1020 | if (!dev) | |
1021 | return -ENODEV; | |
1022 | ||
1023 | device_lock(&dev->dev); | |
1024 | ||
1025 | local = nfc_llcp_find_local(dev); | |
1026 | if (!local) { | |
1027 | rc = -ENODEV; | |
1028 | goto exit; | |
1029 | } | |
1030 | ||
1031 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1032 | if (!msg) { | |
1033 | rc = -ENOMEM; | |
1034 | goto exit; | |
1035 | } | |
1036 | ||
1037 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
1038 | ||
1039 | exit: | |
1040 | device_unlock(&dev->dev); | |
1041 | ||
1042 | nfc_put_device(dev); | |
1043 | ||
1044 | if (rc < 0) { | |
1045 | if (msg) | |
1046 | nlmsg_free(msg); | |
1047 | ||
1048 | return rc; | |
1049 | } | |
1050 | ||
1051 | return genlmsg_reply(msg, info); | |
1052 | } | |
1053 | ||
1054 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
1055 | { | |
1056 | struct nfc_dev *dev; | |
1057 | struct nfc_llcp_local *local; | |
1058 | u8 rw = 0; | |
1059 | u16 miux = 0; | |
1060 | u32 idx; | |
1061 | int rc = 0; | |
1062 | ||
1063 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1064 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
1065 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
1066 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
1067 | return -EINVAL; | |
1068 | ||
1069 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
1070 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
1071 | ||
1072 | if (rw > LLCP_MAX_RW) | |
1073 | return -EINVAL; | |
1074 | } | |
1075 | ||
1076 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
1077 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
1078 | ||
1079 | if (miux > LLCP_MAX_MIUX) | |
1080 | return -EINVAL; | |
1081 | } | |
1082 | ||
1083 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1084 | ||
1085 | dev = nfc_get_device(idx); | |
1086 | if (!dev) | |
1087 | return -ENODEV; | |
1088 | ||
1089 | device_lock(&dev->dev); | |
1090 | ||
1091 | local = nfc_llcp_find_local(dev); | |
1092 | if (!local) { | |
1093 | nfc_put_device(dev); | |
1094 | rc = -ENODEV; | |
1095 | goto exit; | |
1096 | } | |
1097 | ||
1098 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
1099 | if (dev->dep_link_up) { | |
1100 | rc = -EINPROGRESS; | |
1101 | goto exit; | |
1102 | } | |
1103 | ||
1104 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
1105 | } | |
1106 | ||
1107 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
1108 | local->rw = rw; | |
1109 | ||
1110 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
1111 | local->miux = cpu_to_be16(miux); | |
1112 | ||
1113 | exit: | |
1114 | device_unlock(&dev->dev); | |
1115 | ||
1116 | nfc_put_device(dev); | |
1117 | ||
1118 | return rc; | |
1119 | } | |
1120 | ||
d9b8d8e1 TE |
1121 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1122 | { | |
1123 | struct nfc_dev *dev; | |
1124 | struct nfc_llcp_local *local; | |
1125 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1126 | u32 idx; | |
1127 | u8 tid; | |
1128 | char *uri; | |
1129 | int rc = 0, rem; | |
1130 | size_t uri_len, tlvs_len; | |
1131 | struct hlist_head sdreq_list; | |
1132 | struct nfc_llcp_sdp_tlv *sdreq; | |
1133 | ||
1134 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1135 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1136 | return -EINVAL; | |
1137 | ||
1138 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1139 | ||
1140 | dev = nfc_get_device(idx); | |
9abebb8a JL |
1141 | if (!dev) |
1142 | return -ENODEV; | |
d9b8d8e1 TE |
1143 | |
1144 | device_lock(&dev->dev); | |
1145 | ||
1146 | if (dev->dep_link_up == false) { | |
1147 | rc = -ENOLINK; | |
1148 | goto exit; | |
1149 | } | |
1150 | ||
1151 | local = nfc_llcp_find_local(dev); | |
1152 | if (!local) { | |
1153 | nfc_put_device(dev); | |
1154 | rc = -ENODEV; | |
1155 | goto exit; | |
1156 | } | |
1157 | ||
1158 | INIT_HLIST_HEAD(&sdreq_list); | |
1159 | ||
1160 | tlvs_len = 0; | |
1161 | ||
1162 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
1163 | rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr, | |
1164 | nfc_sdp_genl_policy); | |
1165 | ||
1166 | if (rc != 0) { | |
1167 | rc = -EINVAL; | |
1168 | goto exit; | |
1169 | } | |
1170 | ||
1171 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1172 | continue; | |
1173 | ||
1174 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1175 | if (uri_len == 0) | |
1176 | continue; | |
1177 | ||
1178 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1179 | if (uri == NULL || *uri == 0) | |
1180 | continue; | |
1181 | ||
1182 | tid = local->sdreq_next_tid++; | |
1183 | ||
1184 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1185 | if (sdreq == NULL) { | |
1186 | rc = -ENOMEM; | |
1187 | goto exit; | |
1188 | } | |
1189 | ||
1190 | tlvs_len += sdreq->tlv_len; | |
1191 | ||
1192 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1193 | } | |
1194 | ||
1195 | if (hlist_empty(&sdreq_list)) { | |
1196 | rc = -EINVAL; | |
1197 | goto exit; | |
1198 | } | |
1199 | ||
1200 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1201 | exit: | |
1202 | device_unlock(&dev->dev); | |
1203 | ||
1204 | nfc_put_device(dev); | |
1205 | ||
1206 | return rc; | |
1207 | } | |
1208 | ||
9ea7187c | 1209 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1210 | { |
1211 | struct nfc_dev *dev; | |
1212 | int rc; | |
1213 | u32 idx; | |
1214 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1215 | ||
1216 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1217 | return -EINVAL; | |
1218 | ||
1219 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1220 | ||
1221 | dev = nfc_get_device(idx); | |
1222 | if (!dev) | |
1223 | return -ENODEV; | |
1224 | ||
1225 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1226 | sizeof(firmware_name)); | |
1227 | ||
9ea7187c | 1228 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1229 | |
1230 | nfc_put_device(dev); | |
1231 | return rc; | |
1232 | } | |
1233 | ||
352a5f5f EL |
1234 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1235 | u32 result) | |
9674da87 EL |
1236 | { |
1237 | struct sk_buff *msg; | |
1238 | void *hdr; | |
1239 | ||
1240 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1241 | if (!msg) | |
1242 | return -ENOMEM; | |
1243 | ||
1244 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1245 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1246 | if (!hdr) |
1247 | goto free_msg; | |
1248 | ||
1249 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1250 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1251 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1252 | goto nla_put_failure; | |
1253 | ||
1254 | genlmsg_end(msg, hdr); | |
1255 | ||
2a94fe48 | 1256 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da87 EL |
1257 | |
1258 | return 0; | |
1259 | ||
1260 | nla_put_failure: | |
1261 | genlmsg_cancel(msg, hdr); | |
1262 | free_msg: | |
1263 | nlmsg_free(msg); | |
1264 | return -EMSGSIZE; | |
1265 | } | |
1266 | ||
be085653 SO |
1267 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1268 | { | |
1269 | struct nfc_dev *dev; | |
1270 | int rc; | |
1271 | u32 idx, se_idx; | |
1272 | ||
1273 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1274 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1275 | return -EINVAL; | |
1276 | ||
1277 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1278 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1279 | ||
1280 | dev = nfc_get_device(idx); | |
1281 | if (!dev) | |
1282 | return -ENODEV; | |
1283 | ||
1284 | rc = nfc_enable_se(dev, se_idx); | |
1285 | ||
1286 | nfc_put_device(dev); | |
1287 | return rc; | |
1288 | } | |
1289 | ||
1290 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1291 | { | |
1292 | struct nfc_dev *dev; | |
1293 | int rc; | |
1294 | u32 idx, se_idx; | |
1295 | ||
1296 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1297 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1298 | return -EINVAL; | |
1299 | ||
1300 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1301 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1302 | ||
1303 | dev = nfc_get_device(idx); | |
1304 | if (!dev) | |
1305 | return -ENODEV; | |
1306 | ||
1307 | rc = nfc_disable_se(dev, se_idx); | |
1308 | ||
1309 | nfc_put_device(dev); | |
1310 | return rc; | |
1311 | } | |
1312 | ||
ac22ac46 SO |
1313 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1314 | u32 portid, u32 seq, | |
1315 | struct netlink_callback *cb, | |
1316 | int flags) | |
1317 | { | |
1318 | void *hdr; | |
1319 | struct nfc_se *se, *n; | |
1320 | ||
1321 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1322 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1323 | NFC_CMD_GET_SE); | |
1324 | if (!hdr) | |
1325 | goto nla_put_failure; | |
1326 | ||
1327 | if (cb) | |
1328 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
1329 | ||
1330 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1331 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1332 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1333 | goto nla_put_failure; | |
1334 | ||
053c095a | 1335 | genlmsg_end(msg, hdr); |
ac22ac46 SO |
1336 | } |
1337 | ||
1338 | return 0; | |
1339 | ||
1340 | nla_put_failure: | |
1341 | genlmsg_cancel(msg, hdr); | |
1342 | return -EMSGSIZE; | |
1343 | } | |
1344 | ||
1345 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1346 | struct netlink_callback *cb) | |
1347 | { | |
1348 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1349 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1350 | bool first_call = false; | |
1351 | ||
1352 | if (!iter) { | |
1353 | first_call = true; | |
1354 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1355 | if (!iter) | |
1356 | return -ENOMEM; | |
1357 | cb->args[0] = (long) iter; | |
1358 | } | |
1359 | ||
1360 | mutex_lock(&nfc_devlist_mutex); | |
1361 | ||
1362 | cb->seq = nfc_devlist_generation; | |
1363 | ||
1364 | if (first_call) { | |
1365 | nfc_device_iter_init(iter); | |
1366 | dev = nfc_device_iter_next(iter); | |
1367 | } | |
1368 | ||
1369 | while (dev) { | |
1370 | int rc; | |
1371 | ||
1372 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1373 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1374 | if (rc < 0) | |
1375 | break; | |
1376 | ||
1377 | dev = nfc_device_iter_next(iter); | |
1378 | } | |
1379 | ||
1380 | mutex_unlock(&nfc_devlist_mutex); | |
1381 | ||
1382 | cb->args[1] = (long) dev; | |
1383 | ||
1384 | return skb->len; | |
1385 | } | |
1386 | ||
1387 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1388 | { | |
1389 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1390 | ||
1391 | nfc_device_iter_exit(iter); | |
1392 | kfree(iter); | |
1393 | ||
1394 | return 0; | |
1395 | } | |
1396 | ||
cd96db6f CR |
1397 | static int nfc_se_io(struct nfc_dev *dev, u32 se_idx, |
1398 | u8 *apdu, size_t apdu_length, | |
1399 | se_io_cb_t cb, void *cb_context) | |
1400 | { | |
1401 | struct nfc_se *se; | |
1402 | int rc; | |
1403 | ||
1404 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
1405 | ||
1406 | device_lock(&dev->dev); | |
1407 | ||
1408 | if (!device_is_registered(&dev->dev)) { | |
1409 | rc = -ENODEV; | |
1410 | goto error; | |
1411 | } | |
1412 | ||
1413 | if (!dev->dev_up) { | |
1414 | rc = -ENODEV; | |
1415 | goto error; | |
1416 | } | |
1417 | ||
1418 | if (!dev->ops->se_io) { | |
1419 | rc = -EOPNOTSUPP; | |
1420 | goto error; | |
1421 | } | |
1422 | ||
1423 | se = nfc_find_se(dev, se_idx); | |
1424 | if (!se) { | |
1425 | rc = -EINVAL; | |
1426 | goto error; | |
1427 | } | |
1428 | ||
1429 | if (se->state != NFC_SE_ENABLED) { | |
1430 | rc = -ENODEV; | |
1431 | goto error; | |
1432 | } | |
1433 | ||
1434 | rc = dev->ops->se_io(dev, se_idx, apdu, | |
1435 | apdu_length, cb, cb_context); | |
1436 | ||
1437 | error: | |
1438 | device_unlock(&dev->dev); | |
1439 | return rc; | |
1440 | } | |
1441 | ||
5ce3f32b SO |
1442 | struct se_io_ctx { |
1443 | u32 dev_idx; | |
1444 | u32 se_idx; | |
1445 | }; | |
1446 | ||
ddc1a70b | 1447 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1448 | { |
1449 | struct se_io_ctx *ctx = context; | |
1450 | struct sk_buff *msg; | |
1451 | void *hdr; | |
1452 | ||
1453 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1454 | if (!msg) { | |
1455 | kfree(ctx); | |
1456 | return; | |
1457 | } | |
1458 | ||
1459 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1460 | NFC_CMD_SE_IO); | |
1461 | if (!hdr) | |
1462 | goto free_msg; | |
1463 | ||
1464 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1465 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1466 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1467 | goto nla_put_failure; | |
1468 | ||
1469 | genlmsg_end(msg, hdr); | |
1470 | ||
2a94fe48 | 1471 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1472 | |
1473 | kfree(ctx); | |
1474 | ||
1475 | return; | |
1476 | ||
1477 | nla_put_failure: | |
1478 | genlmsg_cancel(msg, hdr); | |
1479 | free_msg: | |
1480 | nlmsg_free(msg); | |
1481 | kfree(ctx); | |
1482 | ||
1483 | return; | |
1484 | } | |
1485 | ||
1486 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1487 | { | |
1488 | struct nfc_dev *dev; | |
1489 | struct se_io_ctx *ctx; | |
1490 | u32 dev_idx, se_idx; | |
1491 | u8 *apdu; | |
1492 | size_t apdu_len; | |
1493 | ||
1494 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1495 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1496 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1497 | return -EINVAL; | |
1498 | ||
1499 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1500 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1501 | ||
1502 | dev = nfc_get_device(dev_idx); | |
1503 | if (!dev) | |
1504 | return -ENODEV; | |
1505 | ||
1506 | if (!dev->ops || !dev->ops->se_io) | |
1507 | return -ENOTSUPP; | |
1508 | ||
1509 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
1510 | if (apdu_len == 0) | |
1511 | return -EINVAL; | |
1512 | ||
1513 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
1514 | if (!apdu) | |
1515 | return -EINVAL; | |
1516 | ||
1517 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
1518 | if (!ctx) | |
1519 | return -ENOMEM; | |
1520 | ||
1521 | ctx->dev_idx = dev_idx; | |
1522 | ctx->se_idx = se_idx; | |
1523 | ||
cd96db6f | 1524 | return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); |
5ce3f32b SO |
1525 | } |
1526 | ||
9e58095f SO |
1527 | static int nfc_genl_vendor_cmd(struct sk_buff *skb, |
1528 | struct genl_info *info) | |
1529 | { | |
1530 | struct nfc_dev *dev; | |
1531 | struct nfc_vendor_cmd *cmd; | |
1532 | u32 dev_idx, vid, subcmd; | |
1533 | u8 *data; | |
1534 | size_t data_len; | |
29e76924 | 1535 | int i, err; |
9e58095f SO |
1536 | |
1537 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1538 | !info->attrs[NFC_ATTR_VENDOR_ID] || | |
1539 | !info->attrs[NFC_ATTR_VENDOR_SUBCMD]) | |
1540 | return -EINVAL; | |
1541 | ||
1542 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1543 | vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]); | |
1544 | subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]); | |
1545 | ||
1546 | dev = nfc_get_device(dev_idx); | |
1547 | if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds) | |
1548 | return -ENODEV; | |
1549 | ||
fe202fe9 CR |
1550 | if (info->attrs[NFC_ATTR_VENDOR_DATA]) { |
1551 | data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]); | |
9e58095f SO |
1552 | data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]); |
1553 | if (data_len == 0) | |
1554 | return -EINVAL; | |
1555 | } else { | |
adca3c38 | 1556 | data = NULL; |
9e58095f SO |
1557 | data_len = 0; |
1558 | } | |
1559 | ||
1560 | for (i = 0; i < dev->n_vendor_cmds; i++) { | |
1561 | cmd = &dev->vendor_cmds[i]; | |
1562 | ||
1563 | if (cmd->vendor_id != vid || cmd->subcmd != subcmd) | |
1564 | continue; | |
1565 | ||
29e76924 CR |
1566 | dev->cur_cmd_info = info; |
1567 | err = cmd->doit(dev, data, data_len); | |
1568 | dev->cur_cmd_info = NULL; | |
1569 | return err; | |
9e58095f SO |
1570 | } |
1571 | ||
1572 | return -EOPNOTSUPP; | |
1573 | } | |
1574 | ||
29e76924 CR |
1575 | /* message building helper */ |
1576 | static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq, | |
1577 | int flags, u8 cmd) | |
1578 | { | |
1579 | /* since there is no private header just add the generic one */ | |
1580 | return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd); | |
1581 | } | |
1582 | ||
1583 | static struct sk_buff * | |
1584 | __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen, | |
1585 | u32 portid, u32 seq, | |
1586 | enum nfc_attrs attr, | |
1587 | u32 oui, u32 subcmd, gfp_t gfp) | |
1588 | { | |
1589 | struct sk_buff *skb; | |
1590 | void *hdr; | |
1591 | ||
1592 | skb = nlmsg_new(approxlen + 100, gfp); | |
1593 | if (!skb) | |
1594 | return NULL; | |
1595 | ||
1596 | hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR); | |
1597 | if (!hdr) { | |
1598 | kfree_skb(skb); | |
1599 | return NULL; | |
1600 | } | |
1601 | ||
1602 | if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
1603 | goto nla_put_failure; | |
1604 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui)) | |
1605 | goto nla_put_failure; | |
1606 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd)) | |
1607 | goto nla_put_failure; | |
1608 | ||
1609 | ((void **)skb->cb)[0] = dev; | |
1610 | ((void **)skb->cb)[1] = hdr; | |
1611 | ||
1612 | return skb; | |
1613 | ||
1614 | nla_put_failure: | |
1615 | kfree_skb(skb); | |
1616 | return NULL; | |
1617 | } | |
1618 | ||
1619 | struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev, | |
1620 | enum nfc_attrs attr, | |
1621 | u32 oui, u32 subcmd, | |
1622 | int approxlen) | |
1623 | { | |
1624 | if (WARN_ON(!dev->cur_cmd_info)) | |
1625 | return NULL; | |
1626 | ||
1627 | return __nfc_alloc_vendor_cmd_skb(dev, approxlen, | |
1628 | dev->cur_cmd_info->snd_portid, | |
1629 | dev->cur_cmd_info->snd_seq, attr, | |
1630 | oui, subcmd, GFP_KERNEL); | |
1631 | } | |
1632 | EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb); | |
1633 | ||
1634 | int nfc_vendor_cmd_reply(struct sk_buff *skb) | |
1635 | { | |
1636 | struct nfc_dev *dev = ((void **)skb->cb)[0]; | |
1637 | void *hdr = ((void **)skb->cb)[1]; | |
1638 | ||
1639 | /* clear CB data for netlink core to own from now on */ | |
1640 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1641 | ||
1642 | if (WARN_ON(!dev->cur_cmd_info)) { | |
1643 | kfree_skb(skb); | |
1644 | return -EINVAL; | |
1645 | } | |
1646 | ||
1647 | genlmsg_end(skb, hdr); | |
1648 | return genlmsg_reply(skb, dev->cur_cmd_info); | |
1649 | } | |
1650 | EXPORT_SYMBOL(nfc_vendor_cmd_reply); | |
1651 | ||
4534de83 | 1652 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1653 | { |
1654 | .cmd = NFC_CMD_GET_DEVICE, | |
1655 | .doit = nfc_genl_get_device, | |
1656 | .dumpit = nfc_genl_dump_devices, | |
1657 | .done = nfc_genl_dump_devices_done, | |
1658 | .policy = nfc_genl_policy, | |
8b3fe7b5 IE |
1659 | }, |
1660 | { | |
1661 | .cmd = NFC_CMD_DEV_UP, | |
1662 | .doit = nfc_genl_dev_up, | |
1663 | .policy = nfc_genl_policy, | |
1664 | }, | |
1665 | { | |
1666 | .cmd = NFC_CMD_DEV_DOWN, | |
1667 | .doit = nfc_genl_dev_down, | |
1668 | .policy = nfc_genl_policy, | |
4d12b8b1 LRV |
1669 | }, |
1670 | { | |
1671 | .cmd = NFC_CMD_START_POLL, | |
1672 | .doit = nfc_genl_start_poll, | |
1673 | .policy = nfc_genl_policy, | |
1674 | }, | |
1675 | { | |
1676 | .cmd = NFC_CMD_STOP_POLL, | |
1677 | .doit = nfc_genl_stop_poll, | |
1678 | .policy = nfc_genl_policy, | |
1679 | }, | |
1ed28f61 SO |
1680 | { |
1681 | .cmd = NFC_CMD_DEP_LINK_UP, | |
1682 | .doit = nfc_genl_dep_link_up, | |
1683 | .policy = nfc_genl_policy, | |
1684 | }, | |
1685 | { | |
1686 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
1687 | .doit = nfc_genl_dep_link_down, | |
1688 | .policy = nfc_genl_policy, | |
1689 | }, | |
4d12b8b1 LRV |
1690 | { |
1691 | .cmd = NFC_CMD_GET_TARGET, | |
1692 | .dumpit = nfc_genl_dump_targets, | |
1693 | .done = nfc_genl_dump_targets_done, | |
1694 | .policy = nfc_genl_policy, | |
1695 | }, | |
52feb444 TE |
1696 | { |
1697 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
1698 | .doit = nfc_genl_llc_get_params, | |
1699 | .policy = nfc_genl_policy, | |
1700 | }, | |
1701 | { | |
1702 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
1703 | .doit = nfc_genl_llc_set_params, | |
1704 | .policy = nfc_genl_policy, | |
1705 | }, | |
d9b8d8e1 TE |
1706 | { |
1707 | .cmd = NFC_CMD_LLC_SDREQ, | |
1708 | .doit = nfc_genl_llc_sdreq, | |
1709 | .policy = nfc_genl_policy, | |
1710 | }, | |
9674da87 | 1711 | { |
9ea7187c SO |
1712 | .cmd = NFC_CMD_FW_DOWNLOAD, |
1713 | .doit = nfc_genl_fw_download, | |
9674da87 EL |
1714 | .policy = nfc_genl_policy, |
1715 | }, | |
be085653 SO |
1716 | { |
1717 | .cmd = NFC_CMD_ENABLE_SE, | |
1718 | .doit = nfc_genl_enable_se, | |
1719 | .policy = nfc_genl_policy, | |
1720 | }, | |
1721 | { | |
1722 | .cmd = NFC_CMD_DISABLE_SE, | |
1723 | .doit = nfc_genl_disable_se, | |
1724 | .policy = nfc_genl_policy, | |
1725 | }, | |
ac22ac46 SO |
1726 | { |
1727 | .cmd = NFC_CMD_GET_SE, | |
1728 | .dumpit = nfc_genl_dump_ses, | |
1729 | .done = nfc_genl_dump_ses_done, | |
1730 | .policy = nfc_genl_policy, | |
1731 | }, | |
5ce3f32b SO |
1732 | { |
1733 | .cmd = NFC_CMD_SE_IO, | |
1734 | .doit = nfc_genl_se_io, | |
1735 | .policy = nfc_genl_policy, | |
1736 | }, | |
3682f49f CR |
1737 | { |
1738 | .cmd = NFC_CMD_ACTIVATE_TARGET, | |
1739 | .doit = nfc_genl_activate_target, | |
1740 | .policy = nfc_genl_policy, | |
1741 | }, | |
9e58095f SO |
1742 | { |
1743 | .cmd = NFC_CMD_VENDOR, | |
1744 | .doit = nfc_genl_vendor_cmd, | |
1745 | .policy = nfc_genl_policy, | |
1746 | }, | |
4d12b8b1 LRV |
1747 | }; |
1748 | ||
56989f6d | 1749 | static struct genl_family nfc_genl_family __ro_after_init = { |
489111e5 JB |
1750 | .hdrsize = 0, |
1751 | .name = NFC_GENL_NAME, | |
1752 | .version = NFC_GENL_VERSION, | |
1753 | .maxattr = NFC_ATTR_MAX, | |
1754 | .module = THIS_MODULE, | |
1755 | .ops = nfc_genl_ops, | |
1756 | .n_ops = ARRAY_SIZE(nfc_genl_ops), | |
1757 | .mcgrps = nfc_genl_mcgrps, | |
1758 | .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps), | |
1759 | }; | |
1760 | ||
3c0cc8aa SJ |
1761 | |
1762 | struct urelease_work { | |
1763 | struct work_struct w; | |
65bc4f93 | 1764 | u32 portid; |
3c0cc8aa SJ |
1765 | }; |
1766 | ||
1767 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1768 | { |
3c0cc8aa | 1769 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1770 | struct class_dev_iter iter; |
1771 | struct nfc_dev *dev; | |
1772 | ||
c487606f | 1773 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1774 | |
3c0cc8aa | 1775 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1776 | |
1777 | nfc_device_iter_init(&iter); | |
1778 | dev = nfc_device_iter_next(&iter); | |
1779 | ||
1780 | while (dev) { | |
3c0cc8aa SJ |
1781 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1782 | ||
c487606f | 1783 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1784 | nfc_stop_poll(dev); |
15e47304 | 1785 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1786 | } |
3c0cc8aa SJ |
1787 | |
1788 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1789 | ||
4d12b8b1 LRV |
1790 | dev = nfc_device_iter_next(&iter); |
1791 | } | |
1792 | ||
1793 | nfc_device_iter_exit(&iter); | |
1794 | ||
3c0cc8aa SJ |
1795 | mutex_unlock(&nfc_devlist_mutex); |
1796 | ||
1797 | kfree(w); | |
1798 | } | |
1799 | ||
1800 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1801 | unsigned long event, void *ptr) | |
1802 | { | |
1803 | struct netlink_notify *n = ptr; | |
1804 | struct urelease_work *w; | |
1805 | ||
1806 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1807 | goto out; | |
1808 | ||
c487606f | 1809 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1810 | |
1811 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1812 | if (w) { | |
1813 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1814 | w->portid = n->portid; |
3c0cc8aa SJ |
1815 | schedule_work((struct work_struct *) w); |
1816 | } | |
1817 | ||
4d12b8b1 LRV |
1818 | out: |
1819 | return NOTIFY_DONE; | |
1820 | } | |
1821 | ||
1822 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1823 | { | |
15e47304 | 1824 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1825 | mutex_init(&genl_data->genl_data_mutex); |
1826 | } | |
1827 | ||
1828 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1829 | { | |
1830 | mutex_destroy(&genl_data->genl_data_mutex); | |
1831 | } | |
1832 | ||
1833 | static struct notifier_block nl_notifier = { | |
1834 | .notifier_call = nfc_genl_rcv_nl_event, | |
1835 | }; | |
1836 | ||
1837 | /** | |
1838 | * nfc_genl_init() - Initialize netlink interface | |
1839 | * | |
1840 | * This initialization function registers the nfc netlink family. | |
1841 | */ | |
1842 | int __init nfc_genl_init(void) | |
1843 | { | |
1844 | int rc; | |
1845 | ||
489111e5 | 1846 | rc = genl_register_family(&nfc_genl_family); |
4d12b8b1 LRV |
1847 | if (rc) |
1848 | return rc; | |
1849 | ||
4d12b8b1 LRV |
1850 | netlink_register_notifier(&nl_notifier); |
1851 | ||
2a94fe48 | 1852 | return 0; |
4d12b8b1 LRV |
1853 | } |
1854 | ||
1855 | /** | |
1856 | * nfc_genl_exit() - Deinitialize netlink interface | |
1857 | * | |
1858 | * This exit function unregisters the nfc netlink family. | |
1859 | */ | |
1860 | void nfc_genl_exit(void) | |
1861 | { | |
1862 | netlink_unregister_notifier(&nl_notifier); | |
1863 | genl_unregister_family(&nfc_genl_family); | |
1864 | } |