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 | * | |
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 LRV |
96 | |
97 | return genlmsg_end(msg, hdr); | |
98 | ||
99 | nla_put_failure: | |
100 | genlmsg_cancel(msg, hdr); | |
101 | return -EMSGSIZE; | |
102 | } | |
103 | ||
104 | static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) | |
105 | { | |
106 | struct nfc_dev *dev; | |
107 | int rc; | |
108 | u32 idx; | |
109 | ||
110 | rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize, | |
0a40acb2 SO |
111 | nfc_genl_family.attrbuf, |
112 | nfc_genl_family.maxattr, | |
113 | nfc_genl_policy); | |
4d12b8b1 LRV |
114 | if (rc < 0) |
115 | return ERR_PTR(rc); | |
116 | ||
117 | if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]) | |
118 | return ERR_PTR(-EINVAL); | |
119 | ||
120 | idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]); | |
121 | ||
122 | dev = nfc_get_device(idx); | |
123 | if (!dev) | |
124 | return ERR_PTR(-ENODEV); | |
125 | ||
126 | return dev; | |
127 | } | |
128 | ||
129 | static int nfc_genl_dump_targets(struct sk_buff *skb, | |
0a40acb2 | 130 | struct netlink_callback *cb) |
4d12b8b1 LRV |
131 | { |
132 | int i = cb->args[0]; | |
133 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
134 | int rc; | |
135 | ||
4d12b8b1 LRV |
136 | if (!dev) { |
137 | dev = __get_device_from_cb(cb); | |
138 | if (IS_ERR(dev)) | |
139 | return PTR_ERR(dev); | |
140 | ||
141 | cb->args[1] = (long) dev; | |
142 | } | |
143 | ||
d4ccb132 | 144 | device_lock(&dev->dev); |
4d12b8b1 LRV |
145 | |
146 | cb->seq = dev->targets_generation; | |
147 | ||
148 | while (i < dev->n_targets) { | |
149 | rc = nfc_genl_send_target(skb, &dev->targets[i], cb, | |
0a40acb2 | 150 | NLM_F_MULTI); |
4d12b8b1 LRV |
151 | if (rc < 0) |
152 | break; | |
153 | ||
154 | i++; | |
155 | } | |
156 | ||
d4ccb132 | 157 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
158 | |
159 | cb->args[0] = i; | |
160 | ||
161 | return skb->len; | |
162 | } | |
163 | ||
164 | static int nfc_genl_dump_targets_done(struct netlink_callback *cb) | |
165 | { | |
166 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
167 | ||
4d12b8b1 LRV |
168 | if (dev) |
169 | nfc_put_device(dev); | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
174 | int nfc_genl_targets_found(struct nfc_dev *dev) | |
175 | { | |
176 | struct sk_buff *msg; | |
177 | void *hdr; | |
178 | ||
15e47304 | 179 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 180 | |
58050fce | 181 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
4d12b8b1 LRV |
182 | if (!msg) |
183 | return -ENOMEM; | |
184 | ||
185 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 186 | NFC_EVENT_TARGETS_FOUND); |
4d12b8b1 LRV |
187 | if (!hdr) |
188 | goto free_msg; | |
189 | ||
1e6428d8 DM |
190 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
191 | goto nla_put_failure; | |
4d12b8b1 LRV |
192 | |
193 | genlmsg_end(msg, hdr); | |
194 | ||
2a94fe48 | 195 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
4d12b8b1 LRV |
196 | |
197 | nla_put_failure: | |
198 | genlmsg_cancel(msg, hdr); | |
199 | free_msg: | |
200 | nlmsg_free(msg); | |
201 | return -EMSGSIZE; | |
202 | } | |
203 | ||
8112a5c9 SO |
204 | int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) |
205 | { | |
206 | struct sk_buff *msg; | |
207 | void *hdr; | |
208 | ||
58050fce | 209 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
8112a5c9 SO |
210 | if (!msg) |
211 | return -ENOMEM; | |
212 | ||
213 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
214 | NFC_EVENT_TARGET_LOST); | |
215 | if (!hdr) | |
216 | goto free_msg; | |
217 | ||
59ef43e6 JL |
218 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
219 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
220 | goto nla_put_failure; | |
8112a5c9 SO |
221 | |
222 | genlmsg_end(msg, hdr); | |
223 | ||
2a94fe48 | 224 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
8112a5c9 SO |
225 | |
226 | return 0; | |
227 | ||
fc40a8c1 SO |
228 | nla_put_failure: |
229 | genlmsg_cancel(msg, hdr); | |
230 | free_msg: | |
231 | nlmsg_free(msg); | |
232 | return -EMSGSIZE; | |
233 | } | |
234 | ||
235 | int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) | |
236 | { | |
237 | struct sk_buff *msg; | |
238 | void *hdr; | |
239 | ||
58050fce | 240 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
241 | if (!msg) |
242 | return -ENOMEM; | |
243 | ||
244 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
245 | NFC_EVENT_TM_ACTIVATED); | |
246 | if (!hdr) | |
247 | goto free_msg; | |
248 | ||
249 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
250 | goto nla_put_failure; | |
251 | if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) | |
252 | goto nla_put_failure; | |
253 | ||
254 | genlmsg_end(msg, hdr); | |
255 | ||
2a94fe48 | 256 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
257 | |
258 | return 0; | |
259 | ||
260 | nla_put_failure: | |
261 | genlmsg_cancel(msg, hdr); | |
262 | free_msg: | |
263 | nlmsg_free(msg); | |
264 | return -EMSGSIZE; | |
265 | } | |
266 | ||
267 | int nfc_genl_tm_deactivated(struct nfc_dev *dev) | |
268 | { | |
269 | struct sk_buff *msg; | |
270 | void *hdr; | |
271 | ||
58050fce | 272 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
273 | if (!msg) |
274 | return -ENOMEM; | |
275 | ||
276 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
277 | NFC_EVENT_TM_DEACTIVATED); | |
278 | if (!hdr) | |
279 | goto free_msg; | |
280 | ||
281 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
282 | goto nla_put_failure; | |
283 | ||
284 | genlmsg_end(msg, hdr); | |
285 | ||
2a94fe48 | 286 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
287 | |
288 | return 0; | |
289 | ||
8112a5c9 SO |
290 | nla_put_failure: |
291 | genlmsg_cancel(msg, hdr); | |
292 | free_msg: | |
293 | nlmsg_free(msg); | |
294 | return -EMSGSIZE; | |
295 | } | |
296 | ||
4d12b8b1 LRV |
297 | int nfc_genl_device_added(struct nfc_dev *dev) |
298 | { | |
299 | struct sk_buff *msg; | |
300 | void *hdr; | |
301 | ||
58050fce | 302 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
303 | if (!msg) |
304 | return -ENOMEM; | |
305 | ||
306 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 307 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
308 | if (!hdr) |
309 | goto free_msg; | |
310 | ||
1e6428d8 DM |
311 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
312 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
313 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
314 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up)) | |
315 | goto nla_put_failure; | |
4d12b8b1 LRV |
316 | |
317 | genlmsg_end(msg, hdr); | |
318 | ||
2a94fe48 | 319 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
320 | |
321 | return 0; | |
322 | ||
323 | nla_put_failure: | |
324 | genlmsg_cancel(msg, hdr); | |
325 | free_msg: | |
326 | nlmsg_free(msg); | |
327 | return -EMSGSIZE; | |
328 | } | |
329 | ||
330 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
331 | { | |
332 | struct sk_buff *msg; | |
333 | void *hdr; | |
334 | ||
58050fce | 335 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
336 | if (!msg) |
337 | return -ENOMEM; | |
338 | ||
339 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 340 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
341 | if (!hdr) |
342 | goto free_msg; | |
343 | ||
1e6428d8 DM |
344 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
345 | goto nla_put_failure; | |
4d12b8b1 LRV |
346 | |
347 | genlmsg_end(msg, hdr); | |
348 | ||
2a94fe48 | 349 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
350 | |
351 | return 0; | |
352 | ||
353 | nla_put_failure: | |
354 | genlmsg_cancel(msg, hdr); | |
355 | free_msg: | |
356 | nlmsg_free(msg); | |
357 | return -EMSGSIZE; | |
358 | } | |
359 | ||
d9b8d8e1 TE |
360 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
361 | { | |
362 | struct sk_buff *msg; | |
363 | struct nlattr *sdp_attr, *uri_attr; | |
364 | struct nfc_llcp_sdp_tlv *sdres; | |
365 | struct hlist_node *n; | |
366 | void *hdr; | |
367 | int rc = -EMSGSIZE; | |
368 | int i; | |
369 | ||
370 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
371 | if (!msg) | |
372 | return -ENOMEM; | |
373 | ||
374 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
375 | NFC_EVENT_LLC_SDRES); | |
376 | if (!hdr) | |
377 | goto free_msg; | |
378 | ||
379 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
380 | goto nla_put_failure; | |
381 | ||
382 | sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP); | |
383 | if (sdp_attr == NULL) { | |
384 | rc = -ENOMEM; | |
385 | goto nla_put_failure; | |
386 | } | |
387 | ||
388 | i = 1; | |
389 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
390 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
391 | ||
392 | uri_attr = nla_nest_start(msg, i++); | |
393 | if (uri_attr == NULL) { | |
394 | rc = -ENOMEM; | |
395 | goto nla_put_failure; | |
396 | } | |
397 | ||
398 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
399 | goto nla_put_failure; | |
400 | ||
401 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
402 | goto nla_put_failure; | |
403 | ||
404 | nla_nest_end(msg, uri_attr); | |
405 | ||
406 | hlist_del(&sdres->node); | |
407 | ||
408 | nfc_llcp_free_sdp_tlv(sdres); | |
409 | } | |
410 | ||
411 | nla_nest_end(msg, sdp_attr); | |
412 | ||
413 | genlmsg_end(msg, hdr); | |
414 | ||
2a94fe48 | 415 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
d9b8d8e1 TE |
416 | |
417 | nla_put_failure: | |
418 | genlmsg_cancel(msg, hdr); | |
419 | ||
420 | free_msg: | |
421 | nlmsg_free(msg); | |
422 | ||
423 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
424 | ||
425 | return rc; | |
426 | } | |
427 | ||
2757c372 SO |
428 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
429 | { | |
430 | struct sk_buff *msg; | |
431 | void *hdr; | |
432 | ||
433 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
434 | if (!msg) | |
435 | return -ENOMEM; | |
436 | ||
437 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
438 | NFC_EVENT_SE_ADDED); | |
439 | if (!hdr) | |
440 | goto free_msg; | |
441 | ||
442 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
443 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
444 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
445 | goto nla_put_failure; | |
446 | ||
447 | genlmsg_end(msg, hdr); | |
448 | ||
2a94fe48 | 449 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
450 | |
451 | return 0; | |
452 | ||
453 | nla_put_failure: | |
454 | genlmsg_cancel(msg, hdr); | |
455 | free_msg: | |
456 | nlmsg_free(msg); | |
457 | return -EMSGSIZE; | |
458 | } | |
459 | ||
460 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
461 | { | |
462 | struct sk_buff *msg; | |
463 | void *hdr; | |
464 | ||
465 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
466 | if (!msg) | |
467 | return -ENOMEM; | |
468 | ||
469 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
470 | NFC_EVENT_SE_REMOVED); | |
471 | if (!hdr) | |
472 | goto free_msg; | |
473 | ||
474 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
475 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
476 | goto nla_put_failure; | |
477 | ||
478 | genlmsg_end(msg, hdr); | |
479 | ||
2a94fe48 | 480 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
481 | |
482 | return 0; | |
483 | ||
484 | nla_put_failure: | |
485 | genlmsg_cancel(msg, hdr); | |
486 | free_msg: | |
487 | nlmsg_free(msg); | |
488 | return -EMSGSIZE; | |
489 | } | |
490 | ||
4d12b8b1 | 491 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 492 | u32 portid, u32 seq, |
0a40acb2 SO |
493 | struct netlink_callback *cb, |
494 | int flags) | |
4d12b8b1 LRV |
495 | { |
496 | void *hdr; | |
497 | ||
15e47304 | 498 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 499 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
500 | if (!hdr) |
501 | return -EMSGSIZE; | |
502 | ||
503 | if (cb) | |
504 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
505 | ||
1e6428d8 DM |
506 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
507 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
508 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
7ad39395 TE |
509 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || |
510 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
1e6428d8 | 511 | goto nla_put_failure; |
4d12b8b1 LRV |
512 | |
513 | return genlmsg_end(msg, hdr); | |
514 | ||
515 | nla_put_failure: | |
516 | genlmsg_cancel(msg, hdr); | |
517 | return -EMSGSIZE; | |
518 | } | |
519 | ||
520 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 521 | struct netlink_callback *cb) |
4d12b8b1 LRV |
522 | { |
523 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
524 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
525 | bool first_call = false; | |
526 | ||
4d12b8b1 LRV |
527 | if (!iter) { |
528 | first_call = true; | |
529 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
530 | if (!iter) | |
531 | return -ENOMEM; | |
532 | cb->args[0] = (long) iter; | |
533 | } | |
534 | ||
535 | mutex_lock(&nfc_devlist_mutex); | |
536 | ||
537 | cb->seq = nfc_devlist_generation; | |
538 | ||
539 | if (first_call) { | |
540 | nfc_device_iter_init(iter); | |
541 | dev = nfc_device_iter_next(iter); | |
542 | } | |
543 | ||
544 | while (dev) { | |
545 | int rc; | |
546 | ||
15e47304 | 547 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 548 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
549 | if (rc < 0) |
550 | break; | |
551 | ||
552 | dev = nfc_device_iter_next(iter); | |
553 | } | |
554 | ||
555 | mutex_unlock(&nfc_devlist_mutex); | |
556 | ||
557 | cb->args[1] = (long) dev; | |
558 | ||
559 | return skb->len; | |
560 | } | |
561 | ||
562 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
563 | { | |
564 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
565 | ||
4d12b8b1 LRV |
566 | nfc_device_iter_exit(iter); |
567 | kfree(iter); | |
568 | ||
569 | return 0; | |
570 | } | |
571 | ||
1ed28f61 | 572 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 573 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
574 | { |
575 | struct sk_buff *msg; | |
576 | void *hdr; | |
577 | ||
578 | pr_debug("DEP link is up\n"); | |
579 | ||
58050fce | 580 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
581 | if (!msg) |
582 | return -ENOMEM; | |
583 | ||
0a40acb2 | 584 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
585 | if (!hdr) |
586 | goto free_msg; | |
587 | ||
1e6428d8 DM |
588 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
589 | goto nla_put_failure; | |
590 | if (rf_mode == NFC_RF_INITIATOR && | |
591 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
592 | goto nla_put_failure; | |
593 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
594 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
595 | goto nla_put_failure; | |
1ed28f61 SO |
596 | |
597 | genlmsg_end(msg, hdr); | |
598 | ||
599 | dev->dep_link_up = true; | |
600 | ||
2a94fe48 | 601 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
602 | |
603 | return 0; | |
604 | ||
605 | nla_put_failure: | |
606 | genlmsg_cancel(msg, hdr); | |
607 | free_msg: | |
608 | nlmsg_free(msg); | |
609 | return -EMSGSIZE; | |
610 | } | |
611 | ||
612 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
613 | { | |
614 | struct sk_buff *msg; | |
615 | void *hdr; | |
616 | ||
617 | pr_debug("DEP link is down\n"); | |
618 | ||
58050fce | 619 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
620 | if (!msg) |
621 | return -ENOMEM; | |
622 | ||
623 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 624 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
625 | if (!hdr) |
626 | goto free_msg; | |
627 | ||
1e6428d8 DM |
628 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
629 | goto nla_put_failure; | |
1ed28f61 SO |
630 | |
631 | genlmsg_end(msg, hdr); | |
632 | ||
2a94fe48 | 633 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
634 | |
635 | return 0; | |
636 | ||
637 | nla_put_failure: | |
638 | genlmsg_cancel(msg, hdr); | |
639 | free_msg: | |
640 | nlmsg_free(msg); | |
641 | return -EMSGSIZE; | |
642 | } | |
643 | ||
4d12b8b1 LRV |
644 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
645 | { | |
646 | struct sk_buff *msg; | |
647 | struct nfc_dev *dev; | |
648 | u32 idx; | |
649 | int rc = -ENOBUFS; | |
650 | ||
4d12b8b1 LRV |
651 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
652 | return -EINVAL; | |
653 | ||
654 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
655 | ||
656 | dev = nfc_get_device(idx); | |
657 | if (!dev) | |
658 | return -ENODEV; | |
659 | ||
58050fce | 660 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
661 | if (!msg) { |
662 | rc = -ENOMEM; | |
663 | goto out_putdev; | |
664 | } | |
665 | ||
15e47304 | 666 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 667 | NULL, 0); |
4d12b8b1 LRV |
668 | if (rc < 0) |
669 | goto out_free; | |
670 | ||
671 | nfc_put_device(dev); | |
672 | ||
673 | return genlmsg_reply(msg, info); | |
674 | ||
675 | out_free: | |
676 | nlmsg_free(msg); | |
677 | out_putdev: | |
678 | nfc_put_device(dev); | |
679 | return rc; | |
680 | } | |
681 | ||
8b3fe7b5 IE |
682 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
683 | { | |
684 | struct nfc_dev *dev; | |
685 | int rc; | |
686 | u32 idx; | |
687 | ||
8b3fe7b5 IE |
688 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
689 | return -EINVAL; | |
690 | ||
691 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
692 | ||
693 | dev = nfc_get_device(idx); | |
694 | if (!dev) | |
695 | return -ENODEV; | |
696 | ||
697 | rc = nfc_dev_up(dev); | |
698 | ||
699 | nfc_put_device(dev); | |
700 | return rc; | |
701 | } | |
702 | ||
703 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
704 | { | |
705 | struct nfc_dev *dev; | |
706 | int rc; | |
707 | u32 idx; | |
708 | ||
8b3fe7b5 IE |
709 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
710 | return -EINVAL; | |
711 | ||
712 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
713 | ||
714 | dev = nfc_get_device(idx); | |
715 | if (!dev) | |
716 | return -ENODEV; | |
717 | ||
718 | rc = nfc_dev_down(dev); | |
719 | ||
720 | nfc_put_device(dev); | |
721 | return rc; | |
722 | } | |
723 | ||
4d12b8b1 LRV |
724 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
725 | { | |
726 | struct nfc_dev *dev; | |
727 | int rc; | |
728 | u32 idx; | |
fe7c5800 | 729 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 730 | |
1ed28f61 SO |
731 | pr_debug("Poll start\n"); |
732 | ||
4d12b8b1 | 733 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
734 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
735 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 736 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
737 | return -EINVAL; |
738 | ||
739 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
740 | |
741 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
742 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
743 | |
744 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
745 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
746 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
747 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
748 | |
749 | dev = nfc_get_device(idx); | |
750 | if (!dev) | |
751 | return -ENODEV; | |
752 | ||
753 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
754 | ||
fe7c5800 | 755 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 756 | if (!rc) |
15e47304 | 757 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
758 | |
759 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
760 | ||
761 | nfc_put_device(dev); | |
762 | return rc; | |
763 | } | |
764 | ||
765 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
766 | { | |
767 | struct nfc_dev *dev; | |
768 | int rc; | |
769 | u32 idx; | |
770 | ||
4d12b8b1 LRV |
771 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
772 | return -EINVAL; | |
773 | ||
774 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
775 | ||
776 | dev = nfc_get_device(idx); | |
777 | if (!dev) | |
778 | return -ENODEV; | |
779 | ||
a831b913 SO |
780 | device_lock(&dev->dev); |
781 | ||
782 | if (!dev->polling) { | |
783 | device_unlock(&dev->dev); | |
784 | return -EINVAL; | |
785 | } | |
786 | ||
787 | device_unlock(&dev->dev); | |
788 | ||
4d12b8b1 LRV |
789 | mutex_lock(&dev->genl_data.genl_data_mutex); |
790 | ||
15e47304 | 791 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
792 | rc = -EBUSY; |
793 | goto out; | |
794 | } | |
795 | ||
796 | rc = nfc_stop_poll(dev); | |
15e47304 | 797 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
798 | |
799 | out: | |
800 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
801 | nfc_put_device(dev); | |
802 | return rc; | |
803 | } | |
804 | ||
1ed28f61 SO |
805 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
806 | { | |
807 | struct nfc_dev *dev; | |
808 | int rc, tgt_idx; | |
809 | u32 idx; | |
47807d3d | 810 | u8 comm; |
1ed28f61 SO |
811 | |
812 | pr_debug("DEP link up\n"); | |
813 | ||
814 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 815 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
816 | return -EINVAL; |
817 | ||
818 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
819 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
820 | tgt_idx = NFC_TARGET_IDX_ANY; | |
821 | else | |
822 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
823 | ||
824 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
825 | |
826 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
827 | return -EINVAL; | |
828 | ||
1ed28f61 SO |
829 | dev = nfc_get_device(idx); |
830 | if (!dev) | |
831 | return -ENODEV; | |
832 | ||
47807d3d | 833 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
834 | |
835 | nfc_put_device(dev); | |
836 | ||
837 | return rc; | |
838 | } | |
839 | ||
840 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
841 | { | |
842 | struct nfc_dev *dev; | |
843 | int rc; | |
844 | u32 idx; | |
845 | ||
846 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
847 | return -EINVAL; | |
848 | ||
849 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
850 | ||
851 | dev = nfc_get_device(idx); | |
852 | if (!dev) | |
853 | return -ENODEV; | |
854 | ||
855 | rc = nfc_dep_link_down(dev); | |
856 | ||
857 | nfc_put_device(dev); | |
858 | return rc; | |
859 | } | |
860 | ||
52feb444 TE |
861 | static int nfc_genl_send_params(struct sk_buff *msg, |
862 | struct nfc_llcp_local *local, | |
863 | u32 portid, u32 seq) | |
864 | { | |
865 | void *hdr; | |
866 | ||
867 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
868 | NFC_CMD_LLC_GET_PARAMS); | |
869 | if (!hdr) | |
870 | return -EMSGSIZE; | |
871 | ||
872 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
873 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
874 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
875 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
876 | goto nla_put_failure; | |
877 | ||
878 | return genlmsg_end(msg, hdr); | |
879 | ||
880 | nla_put_failure: | |
881 | ||
882 | genlmsg_cancel(msg, hdr); | |
883 | return -EMSGSIZE; | |
884 | } | |
885 | ||
886 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
887 | { | |
888 | struct nfc_dev *dev; | |
889 | struct nfc_llcp_local *local; | |
890 | int rc = 0; | |
891 | struct sk_buff *msg = NULL; | |
892 | u32 idx; | |
893 | ||
894 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
895 | return -EINVAL; | |
896 | ||
897 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
898 | ||
899 | dev = nfc_get_device(idx); | |
900 | if (!dev) | |
901 | return -ENODEV; | |
902 | ||
903 | device_lock(&dev->dev); | |
904 | ||
905 | local = nfc_llcp_find_local(dev); | |
906 | if (!local) { | |
907 | rc = -ENODEV; | |
908 | goto exit; | |
909 | } | |
910 | ||
911 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
912 | if (!msg) { | |
913 | rc = -ENOMEM; | |
914 | goto exit; | |
915 | } | |
916 | ||
917 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
918 | ||
919 | exit: | |
920 | device_unlock(&dev->dev); | |
921 | ||
922 | nfc_put_device(dev); | |
923 | ||
924 | if (rc < 0) { | |
925 | if (msg) | |
926 | nlmsg_free(msg); | |
927 | ||
928 | return rc; | |
929 | } | |
930 | ||
931 | return genlmsg_reply(msg, info); | |
932 | } | |
933 | ||
934 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
935 | { | |
936 | struct nfc_dev *dev; | |
937 | struct nfc_llcp_local *local; | |
938 | u8 rw = 0; | |
939 | u16 miux = 0; | |
940 | u32 idx; | |
941 | int rc = 0; | |
942 | ||
943 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
944 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
945 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
946 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
947 | return -EINVAL; | |
948 | ||
949 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
950 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
951 | ||
952 | if (rw > LLCP_MAX_RW) | |
953 | return -EINVAL; | |
954 | } | |
955 | ||
956 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
957 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
958 | ||
959 | if (miux > LLCP_MAX_MIUX) | |
960 | return -EINVAL; | |
961 | } | |
962 | ||
963 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
964 | ||
965 | dev = nfc_get_device(idx); | |
966 | if (!dev) | |
967 | return -ENODEV; | |
968 | ||
969 | device_lock(&dev->dev); | |
970 | ||
971 | local = nfc_llcp_find_local(dev); | |
972 | if (!local) { | |
973 | nfc_put_device(dev); | |
974 | rc = -ENODEV; | |
975 | goto exit; | |
976 | } | |
977 | ||
978 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
979 | if (dev->dep_link_up) { | |
980 | rc = -EINPROGRESS; | |
981 | goto exit; | |
982 | } | |
983 | ||
984 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
985 | } | |
986 | ||
987 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
988 | local->rw = rw; | |
989 | ||
990 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
991 | local->miux = cpu_to_be16(miux); | |
992 | ||
993 | exit: | |
994 | device_unlock(&dev->dev); | |
995 | ||
996 | nfc_put_device(dev); | |
997 | ||
998 | return rc; | |
999 | } | |
1000 | ||
d9b8d8e1 TE |
1001 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1002 | { | |
1003 | struct nfc_dev *dev; | |
1004 | struct nfc_llcp_local *local; | |
1005 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1006 | u32 idx; | |
1007 | u8 tid; | |
1008 | char *uri; | |
1009 | int rc = 0, rem; | |
1010 | size_t uri_len, tlvs_len; | |
1011 | struct hlist_head sdreq_list; | |
1012 | struct nfc_llcp_sdp_tlv *sdreq; | |
1013 | ||
1014 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1015 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1016 | return -EINVAL; | |
1017 | ||
1018 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1019 | ||
1020 | dev = nfc_get_device(idx); | |
1021 | if (!dev) { | |
1022 | rc = -ENODEV; | |
1023 | goto exit; | |
1024 | } | |
1025 | ||
1026 | device_lock(&dev->dev); | |
1027 | ||
1028 | if (dev->dep_link_up == false) { | |
1029 | rc = -ENOLINK; | |
1030 | goto exit; | |
1031 | } | |
1032 | ||
1033 | local = nfc_llcp_find_local(dev); | |
1034 | if (!local) { | |
1035 | nfc_put_device(dev); | |
1036 | rc = -ENODEV; | |
1037 | goto exit; | |
1038 | } | |
1039 | ||
1040 | INIT_HLIST_HEAD(&sdreq_list); | |
1041 | ||
1042 | tlvs_len = 0; | |
1043 | ||
1044 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
1045 | rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr, | |
1046 | nfc_sdp_genl_policy); | |
1047 | ||
1048 | if (rc != 0) { | |
1049 | rc = -EINVAL; | |
1050 | goto exit; | |
1051 | } | |
1052 | ||
1053 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1054 | continue; | |
1055 | ||
1056 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1057 | if (uri_len == 0) | |
1058 | continue; | |
1059 | ||
1060 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1061 | if (uri == NULL || *uri == 0) | |
1062 | continue; | |
1063 | ||
1064 | tid = local->sdreq_next_tid++; | |
1065 | ||
1066 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1067 | if (sdreq == NULL) { | |
1068 | rc = -ENOMEM; | |
1069 | goto exit; | |
1070 | } | |
1071 | ||
1072 | tlvs_len += sdreq->tlv_len; | |
1073 | ||
1074 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1075 | } | |
1076 | ||
1077 | if (hlist_empty(&sdreq_list)) { | |
1078 | rc = -EINVAL; | |
1079 | goto exit; | |
1080 | } | |
1081 | ||
1082 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1083 | exit: | |
1084 | device_unlock(&dev->dev); | |
1085 | ||
1086 | nfc_put_device(dev); | |
1087 | ||
1088 | return rc; | |
1089 | } | |
1090 | ||
9ea7187c | 1091 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1092 | { |
1093 | struct nfc_dev *dev; | |
1094 | int rc; | |
1095 | u32 idx; | |
1096 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1097 | ||
1098 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1099 | return -EINVAL; | |
1100 | ||
1101 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1102 | ||
1103 | dev = nfc_get_device(idx); | |
1104 | if (!dev) | |
1105 | return -ENODEV; | |
1106 | ||
1107 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1108 | sizeof(firmware_name)); | |
1109 | ||
9ea7187c | 1110 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1111 | |
1112 | nfc_put_device(dev); | |
1113 | return rc; | |
1114 | } | |
1115 | ||
352a5f5f EL |
1116 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1117 | u32 result) | |
9674da87 EL |
1118 | { |
1119 | struct sk_buff *msg; | |
1120 | void *hdr; | |
1121 | ||
1122 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1123 | if (!msg) | |
1124 | return -ENOMEM; | |
1125 | ||
1126 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1127 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1128 | if (!hdr) |
1129 | goto free_msg; | |
1130 | ||
1131 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1132 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1133 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1134 | goto nla_put_failure; | |
1135 | ||
1136 | genlmsg_end(msg, hdr); | |
1137 | ||
2a94fe48 | 1138 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da87 EL |
1139 | |
1140 | return 0; | |
1141 | ||
1142 | nla_put_failure: | |
1143 | genlmsg_cancel(msg, hdr); | |
1144 | free_msg: | |
1145 | nlmsg_free(msg); | |
1146 | return -EMSGSIZE; | |
1147 | } | |
1148 | ||
be085653 SO |
1149 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1150 | { | |
1151 | struct nfc_dev *dev; | |
1152 | int rc; | |
1153 | u32 idx, se_idx; | |
1154 | ||
1155 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1156 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1157 | return -EINVAL; | |
1158 | ||
1159 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1160 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1161 | ||
1162 | dev = nfc_get_device(idx); | |
1163 | if (!dev) | |
1164 | return -ENODEV; | |
1165 | ||
1166 | rc = nfc_enable_se(dev, se_idx); | |
1167 | ||
1168 | nfc_put_device(dev); | |
1169 | return rc; | |
1170 | } | |
1171 | ||
1172 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1173 | { | |
1174 | struct nfc_dev *dev; | |
1175 | int rc; | |
1176 | u32 idx, se_idx; | |
1177 | ||
1178 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1179 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1180 | return -EINVAL; | |
1181 | ||
1182 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1183 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1184 | ||
1185 | dev = nfc_get_device(idx); | |
1186 | if (!dev) | |
1187 | return -ENODEV; | |
1188 | ||
1189 | rc = nfc_disable_se(dev, se_idx); | |
1190 | ||
1191 | nfc_put_device(dev); | |
1192 | return rc; | |
1193 | } | |
1194 | ||
ac22ac46 SO |
1195 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1196 | u32 portid, u32 seq, | |
1197 | struct netlink_callback *cb, | |
1198 | int flags) | |
1199 | { | |
1200 | void *hdr; | |
1201 | struct nfc_se *se, *n; | |
1202 | ||
1203 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1204 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1205 | NFC_CMD_GET_SE); | |
1206 | if (!hdr) | |
1207 | goto nla_put_failure; | |
1208 | ||
1209 | if (cb) | |
1210 | genl_dump_check_consistent(cb, hdr, &nfc_genl_family); | |
1211 | ||
1212 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1213 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1214 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1215 | goto nla_put_failure; | |
1216 | ||
1217 | if (genlmsg_end(msg, hdr) < 0) | |
1218 | goto nla_put_failure; | |
1219 | } | |
1220 | ||
1221 | return 0; | |
1222 | ||
1223 | nla_put_failure: | |
1224 | genlmsg_cancel(msg, hdr); | |
1225 | return -EMSGSIZE; | |
1226 | } | |
1227 | ||
1228 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1229 | struct netlink_callback *cb) | |
1230 | { | |
1231 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1232 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1233 | bool first_call = false; | |
1234 | ||
1235 | if (!iter) { | |
1236 | first_call = true; | |
1237 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1238 | if (!iter) | |
1239 | return -ENOMEM; | |
1240 | cb->args[0] = (long) iter; | |
1241 | } | |
1242 | ||
1243 | mutex_lock(&nfc_devlist_mutex); | |
1244 | ||
1245 | cb->seq = nfc_devlist_generation; | |
1246 | ||
1247 | if (first_call) { | |
1248 | nfc_device_iter_init(iter); | |
1249 | dev = nfc_device_iter_next(iter); | |
1250 | } | |
1251 | ||
1252 | while (dev) { | |
1253 | int rc; | |
1254 | ||
1255 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1256 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1257 | if (rc < 0) | |
1258 | break; | |
1259 | ||
1260 | dev = nfc_device_iter_next(iter); | |
1261 | } | |
1262 | ||
1263 | mutex_unlock(&nfc_devlist_mutex); | |
1264 | ||
1265 | cb->args[1] = (long) dev; | |
1266 | ||
1267 | return skb->len; | |
1268 | } | |
1269 | ||
1270 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1271 | { | |
1272 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1273 | ||
1274 | nfc_device_iter_exit(iter); | |
1275 | kfree(iter); | |
1276 | ||
1277 | return 0; | |
1278 | } | |
1279 | ||
5ce3f32b SO |
1280 | struct se_io_ctx { |
1281 | u32 dev_idx; | |
1282 | u32 se_idx; | |
1283 | }; | |
1284 | ||
ddc1a70b | 1285 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1286 | { |
1287 | struct se_io_ctx *ctx = context; | |
1288 | struct sk_buff *msg; | |
1289 | void *hdr; | |
1290 | ||
1291 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1292 | if (!msg) { | |
1293 | kfree(ctx); | |
1294 | return; | |
1295 | } | |
1296 | ||
1297 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1298 | NFC_CMD_SE_IO); | |
1299 | if (!hdr) | |
1300 | goto free_msg; | |
1301 | ||
1302 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1303 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1304 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1305 | goto nla_put_failure; | |
1306 | ||
1307 | genlmsg_end(msg, hdr); | |
1308 | ||
2a94fe48 | 1309 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1310 | |
1311 | kfree(ctx); | |
1312 | ||
1313 | return; | |
1314 | ||
1315 | nla_put_failure: | |
1316 | genlmsg_cancel(msg, hdr); | |
1317 | free_msg: | |
1318 | nlmsg_free(msg); | |
1319 | kfree(ctx); | |
1320 | ||
1321 | return; | |
1322 | } | |
1323 | ||
1324 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1325 | { | |
1326 | struct nfc_dev *dev; | |
1327 | struct se_io_ctx *ctx; | |
1328 | u32 dev_idx, se_idx; | |
1329 | u8 *apdu; | |
1330 | size_t apdu_len; | |
1331 | ||
1332 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1333 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1334 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1335 | return -EINVAL; | |
1336 | ||
1337 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1338 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1339 | ||
1340 | dev = nfc_get_device(dev_idx); | |
1341 | if (!dev) | |
1342 | return -ENODEV; | |
1343 | ||
1344 | if (!dev->ops || !dev->ops->se_io) | |
1345 | return -ENOTSUPP; | |
1346 | ||
1347 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
1348 | if (apdu_len == 0) | |
1349 | return -EINVAL; | |
1350 | ||
1351 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
1352 | if (!apdu) | |
1353 | return -EINVAL; | |
1354 | ||
1355 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
1356 | if (!ctx) | |
1357 | return -ENOMEM; | |
1358 | ||
1359 | ctx->dev_idx = dev_idx; | |
1360 | ctx->se_idx = se_idx; | |
1361 | ||
1362 | return dev->ops->se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); | |
1363 | } | |
1364 | ||
4534de83 | 1365 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1366 | { |
1367 | .cmd = NFC_CMD_GET_DEVICE, | |
1368 | .doit = nfc_genl_get_device, | |
1369 | .dumpit = nfc_genl_dump_devices, | |
1370 | .done = nfc_genl_dump_devices_done, | |
1371 | .policy = nfc_genl_policy, | |
8b3fe7b5 IE |
1372 | }, |
1373 | { | |
1374 | .cmd = NFC_CMD_DEV_UP, | |
1375 | .doit = nfc_genl_dev_up, | |
1376 | .policy = nfc_genl_policy, | |
1377 | }, | |
1378 | { | |
1379 | .cmd = NFC_CMD_DEV_DOWN, | |
1380 | .doit = nfc_genl_dev_down, | |
1381 | .policy = nfc_genl_policy, | |
4d12b8b1 LRV |
1382 | }, |
1383 | { | |
1384 | .cmd = NFC_CMD_START_POLL, | |
1385 | .doit = nfc_genl_start_poll, | |
1386 | .policy = nfc_genl_policy, | |
1387 | }, | |
1388 | { | |
1389 | .cmd = NFC_CMD_STOP_POLL, | |
1390 | .doit = nfc_genl_stop_poll, | |
1391 | .policy = nfc_genl_policy, | |
1392 | }, | |
1ed28f61 SO |
1393 | { |
1394 | .cmd = NFC_CMD_DEP_LINK_UP, | |
1395 | .doit = nfc_genl_dep_link_up, | |
1396 | .policy = nfc_genl_policy, | |
1397 | }, | |
1398 | { | |
1399 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
1400 | .doit = nfc_genl_dep_link_down, | |
1401 | .policy = nfc_genl_policy, | |
1402 | }, | |
4d12b8b1 LRV |
1403 | { |
1404 | .cmd = NFC_CMD_GET_TARGET, | |
1405 | .dumpit = nfc_genl_dump_targets, | |
1406 | .done = nfc_genl_dump_targets_done, | |
1407 | .policy = nfc_genl_policy, | |
1408 | }, | |
52feb444 TE |
1409 | { |
1410 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
1411 | .doit = nfc_genl_llc_get_params, | |
1412 | .policy = nfc_genl_policy, | |
1413 | }, | |
1414 | { | |
1415 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
1416 | .doit = nfc_genl_llc_set_params, | |
1417 | .policy = nfc_genl_policy, | |
1418 | }, | |
d9b8d8e1 TE |
1419 | { |
1420 | .cmd = NFC_CMD_LLC_SDREQ, | |
1421 | .doit = nfc_genl_llc_sdreq, | |
1422 | .policy = nfc_genl_policy, | |
1423 | }, | |
9674da87 | 1424 | { |
9ea7187c SO |
1425 | .cmd = NFC_CMD_FW_DOWNLOAD, |
1426 | .doit = nfc_genl_fw_download, | |
9674da87 EL |
1427 | .policy = nfc_genl_policy, |
1428 | }, | |
be085653 SO |
1429 | { |
1430 | .cmd = NFC_CMD_ENABLE_SE, | |
1431 | .doit = nfc_genl_enable_se, | |
1432 | .policy = nfc_genl_policy, | |
1433 | }, | |
1434 | { | |
1435 | .cmd = NFC_CMD_DISABLE_SE, | |
1436 | .doit = nfc_genl_disable_se, | |
1437 | .policy = nfc_genl_policy, | |
1438 | }, | |
ac22ac46 SO |
1439 | { |
1440 | .cmd = NFC_CMD_GET_SE, | |
1441 | .dumpit = nfc_genl_dump_ses, | |
1442 | .done = nfc_genl_dump_ses_done, | |
1443 | .policy = nfc_genl_policy, | |
1444 | }, | |
5ce3f32b SO |
1445 | { |
1446 | .cmd = NFC_CMD_SE_IO, | |
1447 | .doit = nfc_genl_se_io, | |
1448 | .policy = nfc_genl_policy, | |
1449 | }, | |
4d12b8b1 LRV |
1450 | }; |
1451 | ||
3c0cc8aa SJ |
1452 | |
1453 | struct urelease_work { | |
1454 | struct work_struct w; | |
c487606f | 1455 | int portid; |
3c0cc8aa SJ |
1456 | }; |
1457 | ||
1458 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1459 | { |
3c0cc8aa | 1460 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1461 | struct class_dev_iter iter; |
1462 | struct nfc_dev *dev; | |
1463 | ||
c487606f | 1464 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1465 | |
3c0cc8aa | 1466 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1467 | |
1468 | nfc_device_iter_init(&iter); | |
1469 | dev = nfc_device_iter_next(&iter); | |
1470 | ||
1471 | while (dev) { | |
3c0cc8aa SJ |
1472 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1473 | ||
c487606f | 1474 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1475 | nfc_stop_poll(dev); |
15e47304 | 1476 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1477 | } |
3c0cc8aa SJ |
1478 | |
1479 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1480 | ||
4d12b8b1 LRV |
1481 | dev = nfc_device_iter_next(&iter); |
1482 | } | |
1483 | ||
1484 | nfc_device_iter_exit(&iter); | |
1485 | ||
3c0cc8aa SJ |
1486 | mutex_unlock(&nfc_devlist_mutex); |
1487 | ||
1488 | kfree(w); | |
1489 | } | |
1490 | ||
1491 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1492 | unsigned long event, void *ptr) | |
1493 | { | |
1494 | struct netlink_notify *n = ptr; | |
1495 | struct urelease_work *w; | |
1496 | ||
1497 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1498 | goto out; | |
1499 | ||
c487606f | 1500 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1501 | |
1502 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1503 | if (w) { | |
1504 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1505 | w->portid = n->portid; |
3c0cc8aa SJ |
1506 | schedule_work((struct work_struct *) w); |
1507 | } | |
1508 | ||
4d12b8b1 LRV |
1509 | out: |
1510 | return NOTIFY_DONE; | |
1511 | } | |
1512 | ||
1513 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1514 | { | |
15e47304 | 1515 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1516 | mutex_init(&genl_data->genl_data_mutex); |
1517 | } | |
1518 | ||
1519 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1520 | { | |
1521 | mutex_destroy(&genl_data->genl_data_mutex); | |
1522 | } | |
1523 | ||
1524 | static struct notifier_block nl_notifier = { | |
1525 | .notifier_call = nfc_genl_rcv_nl_event, | |
1526 | }; | |
1527 | ||
1528 | /** | |
1529 | * nfc_genl_init() - Initialize netlink interface | |
1530 | * | |
1531 | * This initialization function registers the nfc netlink family. | |
1532 | */ | |
1533 | int __init nfc_genl_init(void) | |
1534 | { | |
1535 | int rc; | |
1536 | ||
2a94fe48 JB |
1537 | rc = genl_register_family_with_ops_groups(&nfc_genl_family, |
1538 | nfc_genl_ops, | |
1539 | nfc_genl_mcgrps); | |
4d12b8b1 LRV |
1540 | if (rc) |
1541 | return rc; | |
1542 | ||
4d12b8b1 LRV |
1543 | netlink_register_notifier(&nl_notifier); |
1544 | ||
2a94fe48 | 1545 | return 0; |
4d12b8b1 LRV |
1546 | } |
1547 | ||
1548 | /** | |
1549 | * nfc_genl_exit() - Deinitialize netlink interface | |
1550 | * | |
1551 | * This exit function unregisters the nfc netlink family. | |
1552 | */ | |
1553 | void nfc_genl_exit(void) | |
1554 | { | |
1555 | netlink_unregister_notifier(&nl_notifier); | |
1556 | genl_unregister_family(&nfc_genl_family); | |
1557 | } |