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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 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
98b32dec | 19 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
4d12b8b1 LRV |
20 | */ |
21 | ||
52858b51 | 22 | #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__ |
20c239c1 | 23 | |
4d12b8b1 LRV |
24 | #include <net/genetlink.h> |
25 | #include <linux/nfc.h> | |
26 | #include <linux/slab.h> | |
27 | ||
28 | #include "nfc.h" | |
30cc4587 | 29 | #include "llcp.h" |
52feb444 | 30 | |
2a94fe48 JB |
31 | static const struct genl_multicast_group nfc_genl_mcgrps[] = { |
32 | { .name = NFC_GENL_MCAST_EVENT_NAME, }, | |
4d12b8b1 LRV |
33 | }; |
34 | ||
e5fe4cf8 | 35 | static struct genl_family nfc_genl_family = { |
4d12b8b1 LRV |
36 | .id = GENL_ID_GENERATE, |
37 | .hdrsize = 0, | |
38 | .name = NFC_GENL_NAME, | |
39 | .version = NFC_GENL_VERSION, | |
40 | .maxattr = NFC_ATTR_MAX, | |
41 | }; | |
42 | ||
43 | static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = { | |
44 | [NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 }, | |
45 | [NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING, | |
46 | .len = NFC_DEVICE_NAME_MAXSIZE }, | |
47 | [NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 }, | |
1ed28f61 SO |
48 | [NFC_ATTR_COMM_MODE] = { .type = NLA_U8 }, |
49 | [NFC_ATTR_RF_MODE] = { .type = NLA_U8 }, | |
c970a1ac | 50 | [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 }, |
fe7c5800 SO |
51 | [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 }, |
52 | [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 }, | |
8af362d1 TE |
53 | [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 }, |
54 | [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 }, | |
55 | [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 }, | |
d9b8d8e1 | 56 | [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED }, |
9674da87 EL |
57 | [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING, |
58 | .len = NFC_FIRMWARE_NAME_MAXSIZE }, | |
5ce3f32b | 59 | [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY }, |
d9b8d8e1 TE |
60 | }; |
61 | ||
62 | static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = { | |
63 | [NFC_SDP_ATTR_URI] = { .type = NLA_STRING }, | |
64 | [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 }, | |
4d12b8b1 LRV |
65 | }; |
66 | ||
67 | static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target, | |
0a40acb2 | 68 | struct netlink_callback *cb, int flags) |
4d12b8b1 LRV |
69 | { |
70 | void *hdr; | |
71 | ||
15e47304 | 72 | hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
0a40acb2 | 73 | &nfc_genl_family, flags, NFC_CMD_GET_TARGET); |
4d12b8b1 LRV |
74 | if (!hdr) |
75 | return -EMSGSIZE; | |
76 | ||
77 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
78 | ||
1e6428d8 DM |
79 | if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) || |
80 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) || | |
81 | nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) || | |
82 | nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res)) | |
83 | goto nla_put_failure; | |
84 | if (target->nfcid1_len > 0 && | |
85 | nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len, | |
86 | target->nfcid1)) | |
87 | goto nla_put_failure; | |
88 | if (target->sensb_res_len > 0 && | |
89 | nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len, | |
90 | target->sensb_res)) | |
91 | goto nla_put_failure; | |
92 | if (target->sensf_res_len > 0 && | |
93 | nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len, | |
94 | target->sensf_res)) | |
95 | goto nla_put_failure; | |
4d12b8b1 | 96 | |
f5f6872e MG |
97 | if (target->is_iso15693) { |
98 | if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID, | |
99 | target->iso15693_dsfid) || | |
100 | nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID, | |
101 | sizeof(target->iso15693_uid), target->iso15693_uid)) | |
102 | goto nla_put_failure; | |
103 | } | |
104 | ||
4d12b8b1 LRV |
105 | return genlmsg_end(msg, hdr); |
106 | ||
107 | nla_put_failure: | |
108 | genlmsg_cancel(msg, hdr); | |
109 | return -EMSGSIZE; | |
110 | } | |
111 | ||
112 | static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) | |
113 | { | |
114 | struct nfc_dev *dev; | |
115 | int rc; | |
116 | u32 idx; | |
117 | ||
118 | rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize, | |
0a40acb2 SO |
119 | nfc_genl_family.attrbuf, |
120 | nfc_genl_family.maxattr, | |
121 | nfc_genl_policy); | |
4d12b8b1 LRV |
122 | if (rc < 0) |
123 | return ERR_PTR(rc); | |
124 | ||
125 | if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]) | |
126 | return ERR_PTR(-EINVAL); | |
127 | ||
128 | idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]); | |
129 | ||
130 | dev = nfc_get_device(idx); | |
131 | if (!dev) | |
132 | return ERR_PTR(-ENODEV); | |
133 | ||
134 | return dev; | |
135 | } | |
136 | ||
137 | static int nfc_genl_dump_targets(struct sk_buff *skb, | |
0a40acb2 | 138 | struct netlink_callback *cb) |
4d12b8b1 LRV |
139 | { |
140 | int i = cb->args[0]; | |
141 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
142 | int rc; | |
143 | ||
4d12b8b1 LRV |
144 | if (!dev) { |
145 | dev = __get_device_from_cb(cb); | |
146 | if (IS_ERR(dev)) | |
147 | return PTR_ERR(dev); | |
148 | ||
149 | cb->args[1] = (long) dev; | |
150 | } | |
151 | ||
d4ccb132 | 152 | device_lock(&dev->dev); |
4d12b8b1 LRV |
153 | |
154 | cb->seq = dev->targets_generation; | |
155 | ||
156 | while (i < dev->n_targets) { | |
157 | rc = nfc_genl_send_target(skb, &dev->targets[i], cb, | |
0a40acb2 | 158 | NLM_F_MULTI); |
4d12b8b1 LRV |
159 | if (rc < 0) |
160 | break; | |
161 | ||
162 | i++; | |
163 | } | |
164 | ||
d4ccb132 | 165 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
166 | |
167 | cb->args[0] = i; | |
168 | ||
169 | return skb->len; | |
170 | } | |
171 | ||
172 | static int nfc_genl_dump_targets_done(struct netlink_callback *cb) | |
173 | { | |
174 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
175 | ||
4d12b8b1 LRV |
176 | if (dev) |
177 | nfc_put_device(dev); | |
178 | ||
179 | return 0; | |
180 | } | |
181 | ||
182 | int nfc_genl_targets_found(struct nfc_dev *dev) | |
183 | { | |
184 | struct sk_buff *msg; | |
185 | void *hdr; | |
186 | ||
15e47304 | 187 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 188 | |
58050fce | 189 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
4d12b8b1 LRV |
190 | if (!msg) |
191 | return -ENOMEM; | |
192 | ||
193 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 194 | NFC_EVENT_TARGETS_FOUND); |
4d12b8b1 LRV |
195 | if (!hdr) |
196 | goto free_msg; | |
197 | ||
1e6428d8 DM |
198 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
199 | goto nla_put_failure; | |
4d12b8b1 LRV |
200 | |
201 | genlmsg_end(msg, hdr); | |
202 | ||
2a94fe48 | 203 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
4d12b8b1 LRV |
204 | |
205 | nla_put_failure: | |
206 | genlmsg_cancel(msg, hdr); | |
207 | free_msg: | |
208 | nlmsg_free(msg); | |
209 | return -EMSGSIZE; | |
210 | } | |
211 | ||
8112a5c9 SO |
212 | int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) |
213 | { | |
214 | struct sk_buff *msg; | |
215 | void *hdr; | |
216 | ||
58050fce | 217 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
8112a5c9 SO |
218 | if (!msg) |
219 | return -ENOMEM; | |
220 | ||
221 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
222 | NFC_EVENT_TARGET_LOST); | |
223 | if (!hdr) | |
224 | goto free_msg; | |
225 | ||
59ef43e6 JL |
226 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
227 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
228 | goto nla_put_failure; | |
8112a5c9 SO |
229 | |
230 | genlmsg_end(msg, hdr); | |
231 | ||
2a94fe48 | 232 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
8112a5c9 SO |
233 | |
234 | return 0; | |
235 | ||
fc40a8c1 SO |
236 | nla_put_failure: |
237 | genlmsg_cancel(msg, hdr); | |
238 | free_msg: | |
239 | nlmsg_free(msg); | |
240 | return -EMSGSIZE; | |
241 | } | |
242 | ||
243 | int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) | |
244 | { | |
245 | struct sk_buff *msg; | |
246 | void *hdr; | |
247 | ||
58050fce | 248 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
249 | if (!msg) |
250 | return -ENOMEM; | |
251 | ||
252 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
253 | NFC_EVENT_TM_ACTIVATED); | |
254 | if (!hdr) | |
255 | goto free_msg; | |
256 | ||
257 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
258 | goto nla_put_failure; | |
259 | if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) | |
260 | goto nla_put_failure; | |
261 | ||
262 | genlmsg_end(msg, hdr); | |
263 | ||
2a94fe48 | 264 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
265 | |
266 | return 0; | |
267 | ||
268 | nla_put_failure: | |
269 | genlmsg_cancel(msg, hdr); | |
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 SO |
298 | nla_put_failure: |
299 | genlmsg_cancel(msg, hdr); | |
300 | free_msg: | |
301 | nlmsg_free(msg); | |
302 | return -EMSGSIZE; | |
303 | } | |
304 | ||
4d12b8b1 LRV |
305 | int nfc_genl_device_added(struct nfc_dev *dev) |
306 | { | |
307 | struct sk_buff *msg; | |
308 | void *hdr; | |
309 | ||
58050fce | 310 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
311 | if (!msg) |
312 | return -ENOMEM; | |
313 | ||
314 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 315 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
316 | if (!hdr) |
317 | goto free_msg; | |
318 | ||
1e6428d8 DM |
319 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
320 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
321 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
322 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up)) | |
323 | goto nla_put_failure; | |
4d12b8b1 LRV |
324 | |
325 | genlmsg_end(msg, hdr); | |
326 | ||
2a94fe48 | 327 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
328 | |
329 | return 0; | |
330 | ||
331 | nla_put_failure: | |
332 | genlmsg_cancel(msg, hdr); | |
333 | free_msg: | |
334 | nlmsg_free(msg); | |
335 | return -EMSGSIZE; | |
336 | } | |
337 | ||
338 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
339 | { | |
340 | struct sk_buff *msg; | |
341 | void *hdr; | |
342 | ||
58050fce | 343 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
344 | if (!msg) |
345 | return -ENOMEM; | |
346 | ||
347 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 348 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
349 | if (!hdr) |
350 | goto free_msg; | |
351 | ||
1e6428d8 DM |
352 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
353 | goto nla_put_failure; | |
4d12b8b1 LRV |
354 | |
355 | genlmsg_end(msg, hdr); | |
356 | ||
2a94fe48 | 357 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
358 | |
359 | return 0; | |
360 | ||
361 | nla_put_failure: | |
362 | genlmsg_cancel(msg, hdr); | |
363 | free_msg: | |
364 | nlmsg_free(msg); | |
365 | return -EMSGSIZE; | |
366 | } | |
367 | ||
d9b8d8e1 TE |
368 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
369 | { | |
370 | struct sk_buff *msg; | |
371 | struct nlattr *sdp_attr, *uri_attr; | |
372 | struct nfc_llcp_sdp_tlv *sdres; | |
373 | struct hlist_node *n; | |
374 | void *hdr; | |
375 | int rc = -EMSGSIZE; | |
376 | int i; | |
377 | ||
378 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
379 | if (!msg) | |
380 | return -ENOMEM; | |
381 | ||
382 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
383 | NFC_EVENT_LLC_SDRES); | |
384 | if (!hdr) | |
385 | goto free_msg; | |
386 | ||
387 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
388 | goto nla_put_failure; | |
389 | ||
390 | sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP); | |
391 | if (sdp_attr == NULL) { | |
392 | rc = -ENOMEM; | |
393 | goto nla_put_failure; | |
394 | } | |
395 | ||
396 | i = 1; | |
397 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
398 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
399 | ||
400 | uri_attr = nla_nest_start(msg, i++); | |
401 | if (uri_attr == NULL) { | |
402 | rc = -ENOMEM; | |
403 | goto nla_put_failure; | |
404 | } | |
405 | ||
406 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
407 | goto nla_put_failure; | |
408 | ||
409 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
410 | goto nla_put_failure; | |
411 | ||
412 | nla_nest_end(msg, uri_attr); | |
413 | ||
414 | hlist_del(&sdres->node); | |
415 | ||
416 | nfc_llcp_free_sdp_tlv(sdres); | |
417 | } | |
418 | ||
419 | nla_nest_end(msg, sdp_attr); | |
420 | ||
421 | genlmsg_end(msg, hdr); | |
422 | ||
2a94fe48 | 423 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
d9b8d8e1 TE |
424 | |
425 | nla_put_failure: | |
426 | genlmsg_cancel(msg, hdr); | |
427 | ||
428 | free_msg: | |
429 | nlmsg_free(msg); | |
430 | ||
431 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
432 | ||
433 | return rc; | |
434 | } | |
435 | ||
2757c372 SO |
436 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
437 | { | |
438 | struct sk_buff *msg; | |
439 | void *hdr; | |
440 | ||
441 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
442 | if (!msg) | |
443 | return -ENOMEM; | |
444 | ||
445 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
446 | NFC_EVENT_SE_ADDED); | |
447 | if (!hdr) | |
448 | goto free_msg; | |
449 | ||
450 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
451 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
452 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
453 | goto nla_put_failure; | |
454 | ||
455 | genlmsg_end(msg, hdr); | |
456 | ||
2a94fe48 | 457 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
458 | |
459 | return 0; | |
460 | ||
461 | nla_put_failure: | |
462 | genlmsg_cancel(msg, hdr); | |
463 | free_msg: | |
464 | nlmsg_free(msg); | |
465 | return -EMSGSIZE; | |
466 | } | |
467 | ||
468 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
469 | { | |
470 | struct sk_buff *msg; | |
471 | void *hdr; | |
472 | ||
473 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
474 | if (!msg) | |
475 | return -ENOMEM; | |
476 | ||
477 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
478 | NFC_EVENT_SE_REMOVED); | |
479 | if (!hdr) | |
480 | goto free_msg; | |
481 | ||
482 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
483 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
484 | goto nla_put_failure; | |
485 | ||
486 | genlmsg_end(msg, hdr); | |
487 | ||
2a94fe48 | 488 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
489 | |
490 | return 0; | |
491 | ||
492 | nla_put_failure: | |
493 | genlmsg_cancel(msg, hdr); | |
494 | free_msg: | |
495 | nlmsg_free(msg); | |
496 | return -EMSGSIZE; | |
497 | } | |
498 | ||
4d12b8b1 | 499 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 500 | u32 portid, u32 seq, |
0a40acb2 SO |
501 | struct netlink_callback *cb, |
502 | int flags) | |
4d12b8b1 LRV |
503 | { |
504 | void *hdr; | |
505 | ||
15e47304 | 506 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 507 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
508 | if (!hdr) |
509 | return -EMSGSIZE; | |
510 | ||
511 | if (cb) | |
512 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
513 | ||
1e6428d8 DM |
514 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
515 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
516 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
7ad39395 TE |
517 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || |
518 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
1e6428d8 | 519 | goto nla_put_failure; |
4d12b8b1 LRV |
520 | |
521 | return genlmsg_end(msg, hdr); | |
522 | ||
523 | nla_put_failure: | |
524 | genlmsg_cancel(msg, hdr); | |
525 | return -EMSGSIZE; | |
526 | } | |
527 | ||
528 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 529 | struct netlink_callback *cb) |
4d12b8b1 LRV |
530 | { |
531 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
532 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
533 | bool first_call = false; | |
534 | ||
4d12b8b1 LRV |
535 | if (!iter) { |
536 | first_call = true; | |
537 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
538 | if (!iter) | |
539 | return -ENOMEM; | |
540 | cb->args[0] = (long) iter; | |
541 | } | |
542 | ||
543 | mutex_lock(&nfc_devlist_mutex); | |
544 | ||
545 | cb->seq = nfc_devlist_generation; | |
546 | ||
547 | if (first_call) { | |
548 | nfc_device_iter_init(iter); | |
549 | dev = nfc_device_iter_next(iter); | |
550 | } | |
551 | ||
552 | while (dev) { | |
553 | int rc; | |
554 | ||
15e47304 | 555 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 556 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
557 | if (rc < 0) |
558 | break; | |
559 | ||
560 | dev = nfc_device_iter_next(iter); | |
561 | } | |
562 | ||
563 | mutex_unlock(&nfc_devlist_mutex); | |
564 | ||
565 | cb->args[1] = (long) dev; | |
566 | ||
567 | return skb->len; | |
568 | } | |
569 | ||
570 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
571 | { | |
572 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
573 | ||
4d12b8b1 LRV |
574 | nfc_device_iter_exit(iter); |
575 | kfree(iter); | |
576 | ||
577 | return 0; | |
578 | } | |
579 | ||
1ed28f61 | 580 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 581 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
582 | { |
583 | struct sk_buff *msg; | |
584 | void *hdr; | |
585 | ||
586 | pr_debug("DEP link is up\n"); | |
587 | ||
58050fce | 588 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
589 | if (!msg) |
590 | return -ENOMEM; | |
591 | ||
0a40acb2 | 592 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
593 | if (!hdr) |
594 | goto free_msg; | |
595 | ||
1e6428d8 DM |
596 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
597 | goto nla_put_failure; | |
598 | if (rf_mode == NFC_RF_INITIATOR && | |
599 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
600 | goto nla_put_failure; | |
601 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
602 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
603 | goto nla_put_failure; | |
1ed28f61 SO |
604 | |
605 | genlmsg_end(msg, hdr); | |
606 | ||
607 | dev->dep_link_up = true; | |
608 | ||
2a94fe48 | 609 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
610 | |
611 | return 0; | |
612 | ||
613 | nla_put_failure: | |
614 | genlmsg_cancel(msg, hdr); | |
615 | free_msg: | |
616 | nlmsg_free(msg); | |
617 | return -EMSGSIZE; | |
618 | } | |
619 | ||
620 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
621 | { | |
622 | struct sk_buff *msg; | |
623 | void *hdr; | |
624 | ||
625 | pr_debug("DEP link is down\n"); | |
626 | ||
58050fce | 627 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
628 | if (!msg) |
629 | return -ENOMEM; | |
630 | ||
631 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 632 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
633 | if (!hdr) |
634 | goto free_msg; | |
635 | ||
1e6428d8 DM |
636 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
637 | goto nla_put_failure; | |
1ed28f61 SO |
638 | |
639 | genlmsg_end(msg, hdr); | |
640 | ||
2a94fe48 | 641 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
642 | |
643 | return 0; | |
644 | ||
645 | nla_put_failure: | |
646 | genlmsg_cancel(msg, hdr); | |
647 | free_msg: | |
648 | nlmsg_free(msg); | |
649 | return -EMSGSIZE; | |
650 | } | |
651 | ||
4d12b8b1 LRV |
652 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
653 | { | |
654 | struct sk_buff *msg; | |
655 | struct nfc_dev *dev; | |
656 | u32 idx; | |
657 | int rc = -ENOBUFS; | |
658 | ||
4d12b8b1 LRV |
659 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
660 | return -EINVAL; | |
661 | ||
662 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
663 | ||
664 | dev = nfc_get_device(idx); | |
665 | if (!dev) | |
666 | return -ENODEV; | |
667 | ||
58050fce | 668 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
669 | if (!msg) { |
670 | rc = -ENOMEM; | |
671 | goto out_putdev; | |
672 | } | |
673 | ||
15e47304 | 674 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 675 | NULL, 0); |
4d12b8b1 LRV |
676 | if (rc < 0) |
677 | goto out_free; | |
678 | ||
679 | nfc_put_device(dev); | |
680 | ||
681 | return genlmsg_reply(msg, info); | |
682 | ||
683 | out_free: | |
684 | nlmsg_free(msg); | |
685 | out_putdev: | |
686 | nfc_put_device(dev); | |
687 | return rc; | |
688 | } | |
689 | ||
8b3fe7b5 IE |
690 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
691 | { | |
692 | struct nfc_dev *dev; | |
693 | int rc; | |
694 | u32 idx; | |
695 | ||
8b3fe7b5 IE |
696 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
697 | return -EINVAL; | |
698 | ||
699 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
700 | ||
701 | dev = nfc_get_device(idx); | |
702 | if (!dev) | |
703 | return -ENODEV; | |
704 | ||
705 | rc = nfc_dev_up(dev); | |
706 | ||
707 | nfc_put_device(dev); | |
708 | return rc; | |
709 | } | |
710 | ||
711 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
712 | { | |
713 | struct nfc_dev *dev; | |
714 | int rc; | |
715 | u32 idx; | |
716 | ||
8b3fe7b5 IE |
717 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
718 | return -EINVAL; | |
719 | ||
720 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
721 | ||
722 | dev = nfc_get_device(idx); | |
723 | if (!dev) | |
724 | return -ENODEV; | |
725 | ||
726 | rc = nfc_dev_down(dev); | |
727 | ||
728 | nfc_put_device(dev); | |
729 | return rc; | |
730 | } | |
731 | ||
4d12b8b1 LRV |
732 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
733 | { | |
734 | struct nfc_dev *dev; | |
735 | int rc; | |
736 | u32 idx; | |
fe7c5800 | 737 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 738 | |
1ed28f61 SO |
739 | pr_debug("Poll start\n"); |
740 | ||
4d12b8b1 | 741 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
742 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
743 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 744 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
745 | return -EINVAL; |
746 | ||
747 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
748 | |
749 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
750 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
751 | |
752 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
753 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
754 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
755 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
756 | |
757 | dev = nfc_get_device(idx); | |
758 | if (!dev) | |
759 | return -ENODEV; | |
760 | ||
761 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
762 | ||
fe7c5800 | 763 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 764 | if (!rc) |
15e47304 | 765 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
766 | |
767 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
768 | ||
769 | nfc_put_device(dev); | |
770 | return rc; | |
771 | } | |
772 | ||
773 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
774 | { | |
775 | struct nfc_dev *dev; | |
776 | int rc; | |
777 | u32 idx; | |
778 | ||
4d12b8b1 LRV |
779 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
780 | return -EINVAL; | |
781 | ||
782 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
783 | ||
784 | dev = nfc_get_device(idx); | |
785 | if (!dev) | |
786 | return -ENODEV; | |
787 | ||
a831b913 SO |
788 | device_lock(&dev->dev); |
789 | ||
790 | if (!dev->polling) { | |
791 | device_unlock(&dev->dev); | |
792 | return -EINVAL; | |
793 | } | |
794 | ||
795 | device_unlock(&dev->dev); | |
796 | ||
4d12b8b1 LRV |
797 | mutex_lock(&dev->genl_data.genl_data_mutex); |
798 | ||
15e47304 | 799 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
800 | rc = -EBUSY; |
801 | goto out; | |
802 | } | |
803 | ||
804 | rc = nfc_stop_poll(dev); | |
15e47304 | 805 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
806 | |
807 | out: | |
808 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
809 | nfc_put_device(dev); | |
810 | return rc; | |
811 | } | |
812 | ||
1ed28f61 SO |
813 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
814 | { | |
815 | struct nfc_dev *dev; | |
816 | int rc, tgt_idx; | |
817 | u32 idx; | |
47807d3d | 818 | u8 comm; |
1ed28f61 SO |
819 | |
820 | pr_debug("DEP link up\n"); | |
821 | ||
822 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 823 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
824 | return -EINVAL; |
825 | ||
826 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
827 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
828 | tgt_idx = NFC_TARGET_IDX_ANY; | |
829 | else | |
830 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
831 | ||
832 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
833 | |
834 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
835 | return -EINVAL; | |
836 | ||
1ed28f61 SO |
837 | dev = nfc_get_device(idx); |
838 | if (!dev) | |
839 | return -ENODEV; | |
840 | ||
47807d3d | 841 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
842 | |
843 | nfc_put_device(dev); | |
844 | ||
845 | return rc; | |
846 | } | |
847 | ||
848 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
849 | { | |
850 | struct nfc_dev *dev; | |
851 | int rc; | |
852 | u32 idx; | |
853 | ||
854 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
855 | return -EINVAL; | |
856 | ||
857 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
858 | ||
859 | dev = nfc_get_device(idx); | |
860 | if (!dev) | |
861 | return -ENODEV; | |
862 | ||
863 | rc = nfc_dep_link_down(dev); | |
864 | ||
865 | nfc_put_device(dev); | |
866 | return rc; | |
867 | } | |
868 | ||
52feb444 TE |
869 | static int nfc_genl_send_params(struct sk_buff *msg, |
870 | struct nfc_llcp_local *local, | |
871 | u32 portid, u32 seq) | |
872 | { | |
873 | void *hdr; | |
874 | ||
875 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
876 | NFC_CMD_LLC_GET_PARAMS); | |
877 | if (!hdr) | |
878 | return -EMSGSIZE; | |
879 | ||
880 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
881 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
882 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
883 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
884 | goto nla_put_failure; | |
885 | ||
886 | return genlmsg_end(msg, hdr); | |
887 | ||
888 | nla_put_failure: | |
889 | ||
890 | genlmsg_cancel(msg, hdr); | |
891 | return -EMSGSIZE; | |
892 | } | |
893 | ||
894 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
895 | { | |
896 | struct nfc_dev *dev; | |
897 | struct nfc_llcp_local *local; | |
898 | int rc = 0; | |
899 | struct sk_buff *msg = NULL; | |
900 | u32 idx; | |
901 | ||
902 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
903 | return -EINVAL; | |
904 | ||
905 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
906 | ||
907 | dev = nfc_get_device(idx); | |
908 | if (!dev) | |
909 | return -ENODEV; | |
910 | ||
911 | device_lock(&dev->dev); | |
912 | ||
913 | local = nfc_llcp_find_local(dev); | |
914 | if (!local) { | |
915 | rc = -ENODEV; | |
916 | goto exit; | |
917 | } | |
918 | ||
919 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
920 | if (!msg) { | |
921 | rc = -ENOMEM; | |
922 | goto exit; | |
923 | } | |
924 | ||
925 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
926 | ||
927 | exit: | |
928 | device_unlock(&dev->dev); | |
929 | ||
930 | nfc_put_device(dev); | |
931 | ||
932 | if (rc < 0) { | |
933 | if (msg) | |
934 | nlmsg_free(msg); | |
935 | ||
936 | return rc; | |
937 | } | |
938 | ||
939 | return genlmsg_reply(msg, info); | |
940 | } | |
941 | ||
942 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
943 | { | |
944 | struct nfc_dev *dev; | |
945 | struct nfc_llcp_local *local; | |
946 | u8 rw = 0; | |
947 | u16 miux = 0; | |
948 | u32 idx; | |
949 | int rc = 0; | |
950 | ||
951 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
952 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
953 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
954 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
955 | return -EINVAL; | |
956 | ||
957 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
958 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
959 | ||
960 | if (rw > LLCP_MAX_RW) | |
961 | return -EINVAL; | |
962 | } | |
963 | ||
964 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
965 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
966 | ||
967 | if (miux > LLCP_MAX_MIUX) | |
968 | return -EINVAL; | |
969 | } | |
970 | ||
971 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
972 | ||
973 | dev = nfc_get_device(idx); | |
974 | if (!dev) | |
975 | return -ENODEV; | |
976 | ||
977 | device_lock(&dev->dev); | |
978 | ||
979 | local = nfc_llcp_find_local(dev); | |
980 | if (!local) { | |
981 | nfc_put_device(dev); | |
982 | rc = -ENODEV; | |
983 | goto exit; | |
984 | } | |
985 | ||
986 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
987 | if (dev->dep_link_up) { | |
988 | rc = -EINPROGRESS; | |
989 | goto exit; | |
990 | } | |
991 | ||
992 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
993 | } | |
994 | ||
995 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
996 | local->rw = rw; | |
997 | ||
998 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
999 | local->miux = cpu_to_be16(miux); | |
1000 | ||
1001 | exit: | |
1002 | device_unlock(&dev->dev); | |
1003 | ||
1004 | nfc_put_device(dev); | |
1005 | ||
1006 | return rc; | |
1007 | } | |
1008 | ||
d9b8d8e1 TE |
1009 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1010 | { | |
1011 | struct nfc_dev *dev; | |
1012 | struct nfc_llcp_local *local; | |
1013 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1014 | u32 idx; | |
1015 | u8 tid; | |
1016 | char *uri; | |
1017 | int rc = 0, rem; | |
1018 | size_t uri_len, tlvs_len; | |
1019 | struct hlist_head sdreq_list; | |
1020 | struct nfc_llcp_sdp_tlv *sdreq; | |
1021 | ||
1022 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1023 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1024 | return -EINVAL; | |
1025 | ||
1026 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1027 | ||
1028 | dev = nfc_get_device(idx); | |
1029 | if (!dev) { | |
1030 | rc = -ENODEV; | |
1031 | goto exit; | |
1032 | } | |
1033 | ||
1034 | device_lock(&dev->dev); | |
1035 | ||
1036 | if (dev->dep_link_up == false) { | |
1037 | rc = -ENOLINK; | |
1038 | goto exit; | |
1039 | } | |
1040 | ||
1041 | local = nfc_llcp_find_local(dev); | |
1042 | if (!local) { | |
1043 | nfc_put_device(dev); | |
1044 | rc = -ENODEV; | |
1045 | goto exit; | |
1046 | } | |
1047 | ||
1048 | INIT_HLIST_HEAD(&sdreq_list); | |
1049 | ||
1050 | tlvs_len = 0; | |
1051 | ||
1052 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
1053 | rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr, | |
1054 | nfc_sdp_genl_policy); | |
1055 | ||
1056 | if (rc != 0) { | |
1057 | rc = -EINVAL; | |
1058 | goto exit; | |
1059 | } | |
1060 | ||
1061 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1062 | continue; | |
1063 | ||
1064 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1065 | if (uri_len == 0) | |
1066 | continue; | |
1067 | ||
1068 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1069 | if (uri == NULL || *uri == 0) | |
1070 | continue; | |
1071 | ||
1072 | tid = local->sdreq_next_tid++; | |
1073 | ||
1074 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1075 | if (sdreq == NULL) { | |
1076 | rc = -ENOMEM; | |
1077 | goto exit; | |
1078 | } | |
1079 | ||
1080 | tlvs_len += sdreq->tlv_len; | |
1081 | ||
1082 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1083 | } | |
1084 | ||
1085 | if (hlist_empty(&sdreq_list)) { | |
1086 | rc = -EINVAL; | |
1087 | goto exit; | |
1088 | } | |
1089 | ||
1090 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1091 | exit: | |
1092 | device_unlock(&dev->dev); | |
1093 | ||
1094 | nfc_put_device(dev); | |
1095 | ||
1096 | return rc; | |
1097 | } | |
1098 | ||
9ea7187c | 1099 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1100 | { |
1101 | struct nfc_dev *dev; | |
1102 | int rc; | |
1103 | u32 idx; | |
1104 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1105 | ||
1106 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1107 | return -EINVAL; | |
1108 | ||
1109 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1110 | ||
1111 | dev = nfc_get_device(idx); | |
1112 | if (!dev) | |
1113 | return -ENODEV; | |
1114 | ||
1115 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1116 | sizeof(firmware_name)); | |
1117 | ||
9ea7187c | 1118 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1119 | |
1120 | nfc_put_device(dev); | |
1121 | return rc; | |
1122 | } | |
1123 | ||
352a5f5f EL |
1124 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1125 | u32 result) | |
9674da87 EL |
1126 | { |
1127 | struct sk_buff *msg; | |
1128 | void *hdr; | |
1129 | ||
1130 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1131 | if (!msg) | |
1132 | return -ENOMEM; | |
1133 | ||
1134 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1135 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1136 | if (!hdr) |
1137 | goto free_msg; | |
1138 | ||
1139 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1140 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1141 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1142 | goto nla_put_failure; | |
1143 | ||
1144 | genlmsg_end(msg, hdr); | |
1145 | ||
2a94fe48 | 1146 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da87 EL |
1147 | |
1148 | return 0; | |
1149 | ||
1150 | nla_put_failure: | |
1151 | genlmsg_cancel(msg, hdr); | |
1152 | free_msg: | |
1153 | nlmsg_free(msg); | |
1154 | return -EMSGSIZE; | |
1155 | } | |
1156 | ||
be085653 SO |
1157 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1158 | { | |
1159 | struct nfc_dev *dev; | |
1160 | int rc; | |
1161 | u32 idx, se_idx; | |
1162 | ||
1163 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1164 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1165 | return -EINVAL; | |
1166 | ||
1167 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1168 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1169 | ||
1170 | dev = nfc_get_device(idx); | |
1171 | if (!dev) | |
1172 | return -ENODEV; | |
1173 | ||
1174 | rc = nfc_enable_se(dev, se_idx); | |
1175 | ||
1176 | nfc_put_device(dev); | |
1177 | return rc; | |
1178 | } | |
1179 | ||
1180 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1181 | { | |
1182 | struct nfc_dev *dev; | |
1183 | int rc; | |
1184 | u32 idx, se_idx; | |
1185 | ||
1186 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1187 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1188 | return -EINVAL; | |
1189 | ||
1190 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1191 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1192 | ||
1193 | dev = nfc_get_device(idx); | |
1194 | if (!dev) | |
1195 | return -ENODEV; | |
1196 | ||
1197 | rc = nfc_disable_se(dev, se_idx); | |
1198 | ||
1199 | nfc_put_device(dev); | |
1200 | return rc; | |
1201 | } | |
1202 | ||
ac22ac46 SO |
1203 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1204 | u32 portid, u32 seq, | |
1205 | struct netlink_callback *cb, | |
1206 | int flags) | |
1207 | { | |
1208 | void *hdr; | |
1209 | struct nfc_se *se, *n; | |
1210 | ||
1211 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1212 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1213 | NFC_CMD_GET_SE); | |
1214 | if (!hdr) | |
1215 | goto nla_put_failure; | |
1216 | ||
1217 | if (cb) | |
1218 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
1219 | ||
1220 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1221 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1222 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1223 | goto nla_put_failure; | |
1224 | ||
1225 | if (genlmsg_end(msg, hdr) < 0) | |
1226 | goto nla_put_failure; | |
1227 | } | |
1228 | ||
1229 | return 0; | |
1230 | ||
1231 | nla_put_failure: | |
1232 | genlmsg_cancel(msg, hdr); | |
1233 | return -EMSGSIZE; | |
1234 | } | |
1235 | ||
1236 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1237 | struct netlink_callback *cb) | |
1238 | { | |
1239 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1240 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1241 | bool first_call = false; | |
1242 | ||
1243 | if (!iter) { | |
1244 | first_call = true; | |
1245 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1246 | if (!iter) | |
1247 | return -ENOMEM; | |
1248 | cb->args[0] = (long) iter; | |
1249 | } | |
1250 | ||
1251 | mutex_lock(&nfc_devlist_mutex); | |
1252 | ||
1253 | cb->seq = nfc_devlist_generation; | |
1254 | ||
1255 | if (first_call) { | |
1256 | nfc_device_iter_init(iter); | |
1257 | dev = nfc_device_iter_next(iter); | |
1258 | } | |
1259 | ||
1260 | while (dev) { | |
1261 | int rc; | |
1262 | ||
1263 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1264 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1265 | if (rc < 0) | |
1266 | break; | |
1267 | ||
1268 | dev = nfc_device_iter_next(iter); | |
1269 | } | |
1270 | ||
1271 | mutex_unlock(&nfc_devlist_mutex); | |
1272 | ||
1273 | cb->args[1] = (long) dev; | |
1274 | ||
1275 | return skb->len; | |
1276 | } | |
1277 | ||
1278 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1279 | { | |
1280 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1281 | ||
1282 | nfc_device_iter_exit(iter); | |
1283 | kfree(iter); | |
1284 | ||
1285 | return 0; | |
1286 | } | |
1287 | ||
5ce3f32b SO |
1288 | struct se_io_ctx { |
1289 | u32 dev_idx; | |
1290 | u32 se_idx; | |
1291 | }; | |
1292 | ||
ddc1a70b | 1293 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1294 | { |
1295 | struct se_io_ctx *ctx = context; | |
1296 | struct sk_buff *msg; | |
1297 | void *hdr; | |
1298 | ||
1299 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1300 | if (!msg) { | |
1301 | kfree(ctx); | |
1302 | return; | |
1303 | } | |
1304 | ||
1305 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1306 | NFC_CMD_SE_IO); | |
1307 | if (!hdr) | |
1308 | goto free_msg; | |
1309 | ||
1310 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1311 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1312 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1313 | goto nla_put_failure; | |
1314 | ||
1315 | genlmsg_end(msg, hdr); | |
1316 | ||
2a94fe48 | 1317 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1318 | |
1319 | kfree(ctx); | |
1320 | ||
1321 | return; | |
1322 | ||
1323 | nla_put_failure: | |
1324 | genlmsg_cancel(msg, hdr); | |
1325 | free_msg: | |
1326 | nlmsg_free(msg); | |
1327 | kfree(ctx); | |
1328 | ||
1329 | return; | |
1330 | } | |
1331 | ||
1332 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1333 | { | |
1334 | struct nfc_dev *dev; | |
1335 | struct se_io_ctx *ctx; | |
1336 | u32 dev_idx, se_idx; | |
1337 | u8 *apdu; | |
1338 | size_t apdu_len; | |
1339 | ||
1340 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1341 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1342 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1343 | return -EINVAL; | |
1344 | ||
1345 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1346 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1347 | ||
1348 | dev = nfc_get_device(dev_idx); | |
1349 | if (!dev) | |
1350 | return -ENODEV; | |
1351 | ||
1352 | if (!dev->ops || !dev->ops->se_io) | |
1353 | return -ENOTSUPP; | |
1354 | ||
1355 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
1356 | if (apdu_len == 0) | |
1357 | return -EINVAL; | |
1358 | ||
1359 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
1360 | if (!apdu) | |
1361 | return -EINVAL; | |
1362 | ||
1363 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
1364 | if (!ctx) | |
1365 | return -ENOMEM; | |
1366 | ||
1367 | ctx->dev_idx = dev_idx; | |
1368 | ctx->se_idx = se_idx; | |
1369 | ||
1370 | return dev->ops->se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); | |
1371 | } | |
1372 | ||
4534de83 | 1373 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1374 | { |
1375 | .cmd = NFC_CMD_GET_DEVICE, | |
1376 | .doit = nfc_genl_get_device, | |
1377 | .dumpit = nfc_genl_dump_devices, | |
1378 | .done = nfc_genl_dump_devices_done, | |
1379 | .policy = nfc_genl_policy, | |
8b3fe7b5 IE |
1380 | }, |
1381 | { | |
1382 | .cmd = NFC_CMD_DEV_UP, | |
1383 | .doit = nfc_genl_dev_up, | |
1384 | .policy = nfc_genl_policy, | |
1385 | }, | |
1386 | { | |
1387 | .cmd = NFC_CMD_DEV_DOWN, | |
1388 | .doit = nfc_genl_dev_down, | |
1389 | .policy = nfc_genl_policy, | |
4d12b8b1 LRV |
1390 | }, |
1391 | { | |
1392 | .cmd = NFC_CMD_START_POLL, | |
1393 | .doit = nfc_genl_start_poll, | |
1394 | .policy = nfc_genl_policy, | |
1395 | }, | |
1396 | { | |
1397 | .cmd = NFC_CMD_STOP_POLL, | |
1398 | .doit = nfc_genl_stop_poll, | |
1399 | .policy = nfc_genl_policy, | |
1400 | }, | |
1ed28f61 SO |
1401 | { |
1402 | .cmd = NFC_CMD_DEP_LINK_UP, | |
1403 | .doit = nfc_genl_dep_link_up, | |
1404 | .policy = nfc_genl_policy, | |
1405 | }, | |
1406 | { | |
1407 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
1408 | .doit = nfc_genl_dep_link_down, | |
1409 | .policy = nfc_genl_policy, | |
1410 | }, | |
4d12b8b1 LRV |
1411 | { |
1412 | .cmd = NFC_CMD_GET_TARGET, | |
1413 | .dumpit = nfc_genl_dump_targets, | |
1414 | .done = nfc_genl_dump_targets_done, | |
1415 | .policy = nfc_genl_policy, | |
1416 | }, | |
52feb444 TE |
1417 | { |
1418 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
1419 | .doit = nfc_genl_llc_get_params, | |
1420 | .policy = nfc_genl_policy, | |
1421 | }, | |
1422 | { | |
1423 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
1424 | .doit = nfc_genl_llc_set_params, | |
1425 | .policy = nfc_genl_policy, | |
1426 | }, | |
d9b8d8e1 TE |
1427 | { |
1428 | .cmd = NFC_CMD_LLC_SDREQ, | |
1429 | .doit = nfc_genl_llc_sdreq, | |
1430 | .policy = nfc_genl_policy, | |
1431 | }, | |
9674da87 | 1432 | { |
9ea7187c SO |
1433 | .cmd = NFC_CMD_FW_DOWNLOAD, |
1434 | .doit = nfc_genl_fw_download, | |
9674da87 EL |
1435 | .policy = nfc_genl_policy, |
1436 | }, | |
be085653 SO |
1437 | { |
1438 | .cmd = NFC_CMD_ENABLE_SE, | |
1439 | .doit = nfc_genl_enable_se, | |
1440 | .policy = nfc_genl_policy, | |
1441 | }, | |
1442 | { | |
1443 | .cmd = NFC_CMD_DISABLE_SE, | |
1444 | .doit = nfc_genl_disable_se, | |
1445 | .policy = nfc_genl_policy, | |
1446 | }, | |
ac22ac46 SO |
1447 | { |
1448 | .cmd = NFC_CMD_GET_SE, | |
1449 | .dumpit = nfc_genl_dump_ses, | |
1450 | .done = nfc_genl_dump_ses_done, | |
1451 | .policy = nfc_genl_policy, | |
1452 | }, | |
5ce3f32b SO |
1453 | { |
1454 | .cmd = NFC_CMD_SE_IO, | |
1455 | .doit = nfc_genl_se_io, | |
1456 | .policy = nfc_genl_policy, | |
1457 | }, | |
4d12b8b1 LRV |
1458 | }; |
1459 | ||
3c0cc8aa SJ |
1460 | |
1461 | struct urelease_work { | |
1462 | struct work_struct w; | |
c487606f | 1463 | int portid; |
3c0cc8aa SJ |
1464 | }; |
1465 | ||
1466 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1467 | { |
3c0cc8aa | 1468 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1469 | struct class_dev_iter iter; |
1470 | struct nfc_dev *dev; | |
1471 | ||
c487606f | 1472 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1473 | |
3c0cc8aa | 1474 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1475 | |
1476 | nfc_device_iter_init(&iter); | |
1477 | dev = nfc_device_iter_next(&iter); | |
1478 | ||
1479 | while (dev) { | |
3c0cc8aa SJ |
1480 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1481 | ||
c487606f | 1482 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1483 | nfc_stop_poll(dev); |
15e47304 | 1484 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1485 | } |
3c0cc8aa SJ |
1486 | |
1487 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1488 | ||
4d12b8b1 LRV |
1489 | dev = nfc_device_iter_next(&iter); |
1490 | } | |
1491 | ||
1492 | nfc_device_iter_exit(&iter); | |
1493 | ||
3c0cc8aa SJ |
1494 | mutex_unlock(&nfc_devlist_mutex); |
1495 | ||
1496 | kfree(w); | |
1497 | } | |
1498 | ||
1499 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1500 | unsigned long event, void *ptr) | |
1501 | { | |
1502 | struct netlink_notify *n = ptr; | |
1503 | struct urelease_work *w; | |
1504 | ||
1505 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1506 | goto out; | |
1507 | ||
c487606f | 1508 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1509 | |
1510 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1511 | if (w) { | |
1512 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1513 | w->portid = n->portid; |
3c0cc8aa SJ |
1514 | schedule_work((struct work_struct *) w); |
1515 | } | |
1516 | ||
4d12b8b1 LRV |
1517 | out: |
1518 | return NOTIFY_DONE; | |
1519 | } | |
1520 | ||
1521 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1522 | { | |
15e47304 | 1523 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1524 | mutex_init(&genl_data->genl_data_mutex); |
1525 | } | |
1526 | ||
1527 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1528 | { | |
1529 | mutex_destroy(&genl_data->genl_data_mutex); | |
1530 | } | |
1531 | ||
1532 | static struct notifier_block nl_notifier = { | |
1533 | .notifier_call = nfc_genl_rcv_nl_event, | |
1534 | }; | |
1535 | ||
1536 | /** | |
1537 | * nfc_genl_init() - Initialize netlink interface | |
1538 | * | |
1539 | * This initialization function registers the nfc netlink family. | |
1540 | */ | |
1541 | int __init nfc_genl_init(void) | |
1542 | { | |
1543 | int rc; | |
1544 | ||
2a94fe48 JB |
1545 | rc = genl_register_family_with_ops_groups(&nfc_genl_family, |
1546 | nfc_genl_ops, | |
1547 | nfc_genl_mcgrps); | |
4d12b8b1 LRV |
1548 | if (rc) |
1549 | return rc; | |
1550 | ||
4d12b8b1 LRV |
1551 | netlink_register_notifier(&nl_notifier); |
1552 | ||
2a94fe48 | 1553 | return 0; |
4d12b8b1 LRV |
1554 | } |
1555 | ||
1556 | /** | |
1557 | * nfc_genl_exit() - Deinitialize netlink interface | |
1558 | * | |
1559 | * This exit function unregisters the nfc netlink family. | |
1560 | */ | |
1561 | void nfc_genl_exit(void) | |
1562 | { | |
1563 | netlink_unregister_notifier(&nl_notifier); | |
1564 | genl_unregister_family(&nfc_genl_family); | |
1565 | } |