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Commit | Line | Data |
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1ccea77e | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
4d12b8b1 LRV |
2 | /* |
3 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
4 | * | |
5 | * Authors: | |
6 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> | |
7 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> | |
8 | * | |
9e58095f SO |
9 | * Vendor commands implementation based on net/wireless/nl80211.c |
10 | * which is: | |
11 | * | |
12 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> | |
13 | * Copyright 2013-2014 Intel Mobile Communications GmbH | |
4d12b8b1 LRV |
14 | */ |
15 | ||
52858b51 | 16 | #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__ |
20c239c1 | 17 | |
4d12b8b1 LRV |
18 | #include <net/genetlink.h> |
19 | #include <linux/nfc.h> | |
20 | #include <linux/slab.h> | |
21 | ||
22 | #include "nfc.h" | |
30cc4587 | 23 | #include "llcp.h" |
52feb444 | 24 | |
2a94fe48 JB |
25 | static const struct genl_multicast_group nfc_genl_mcgrps[] = { |
26 | { .name = NFC_GENL_MCAST_EVENT_NAME, }, | |
4d12b8b1 LRV |
27 | }; |
28 | ||
489111e5 | 29 | static struct genl_family nfc_genl_family; |
4d12b8b1 LRV |
30 | static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = { |
31 | [NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 }, | |
32 | [NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING, | |
33 | .len = NFC_DEVICE_NAME_MAXSIZE }, | |
34 | [NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 }, | |
88e706d5 | 35 | [NFC_ATTR_TARGET_INDEX] = { .type = NLA_U32 }, |
1ed28f61 SO |
36 | [NFC_ATTR_COMM_MODE] = { .type = NLA_U8 }, |
37 | [NFC_ATTR_RF_MODE] = { .type = NLA_U8 }, | |
c970a1ac | 38 | [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 }, |
fe7c5800 SO |
39 | [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 }, |
40 | [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 }, | |
8af362d1 TE |
41 | [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 }, |
42 | [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 }, | |
43 | [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 }, | |
d9b8d8e1 | 44 | [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED }, |
9674da87 EL |
45 | [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING, |
46 | .len = NFC_FIRMWARE_NAME_MAXSIZE }, | |
361d23e4 | 47 | [NFC_ATTR_SE_INDEX] = { .type = NLA_U32 }, |
5ce3f32b | 48 | [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY }, |
6ba3da44 JK |
49 | [NFC_ATTR_VENDOR_ID] = { .type = NLA_U32 }, |
50 | [NFC_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, | |
29e76924 CR |
51 | [NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, |
52 | ||
d9b8d8e1 TE |
53 | }; |
54 | ||
55 | static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = { | |
fe9c8426 KC |
56 | [NFC_SDP_ATTR_URI] = { .type = NLA_STRING, |
57 | .len = U8_MAX - 4 }, | |
d9b8d8e1 | 58 | [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 }, |
4d12b8b1 LRV |
59 | }; |
60 | ||
61 | static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target, | |
0a40acb2 | 62 | struct netlink_callback *cb, int flags) |
4d12b8b1 LRV |
63 | { |
64 | void *hdr; | |
65 | ||
15e47304 | 66 | hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
0a40acb2 | 67 | &nfc_genl_family, flags, NFC_CMD_GET_TARGET); |
4d12b8b1 LRV |
68 | if (!hdr) |
69 | return -EMSGSIZE; | |
70 | ||
0a833c29 | 71 | genl_dump_check_consistent(cb, hdr); |
4d12b8b1 | 72 | |
1e6428d8 DM |
73 | if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) || |
74 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) || | |
75 | nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) || | |
76 | nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res)) | |
77 | goto nla_put_failure; | |
78 | if (target->nfcid1_len > 0 && | |
79 | nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len, | |
80 | target->nfcid1)) | |
81 | goto nla_put_failure; | |
82 | if (target->sensb_res_len > 0 && | |
83 | nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len, | |
84 | target->sensb_res)) | |
85 | goto nla_put_failure; | |
86 | if (target->sensf_res_len > 0 && | |
87 | nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len, | |
88 | target->sensf_res)) | |
89 | goto nla_put_failure; | |
4d12b8b1 | 90 | |
f5f6872e MG |
91 | if (target->is_iso15693) { |
92 | if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID, | |
93 | target->iso15693_dsfid) || | |
94 | nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID, | |
95 | sizeof(target->iso15693_uid), target->iso15693_uid)) | |
96 | goto nla_put_failure; | |
97 | } | |
98 | ||
053c095a JB |
99 | genlmsg_end(msg, hdr); |
100 | return 0; | |
4d12b8b1 LRV |
101 | |
102 | nla_put_failure: | |
103 | genlmsg_cancel(msg, hdr); | |
104 | return -EMSGSIZE; | |
105 | } | |
106 | ||
107 | static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) | |
108 | { | |
4495af31 | 109 | const struct genl_dumpit_info *info = genl_dumpit_info(cb); |
4d12b8b1 | 110 | struct nfc_dev *dev; |
4d12b8b1 LRV |
111 | u32 idx; |
112 | ||
4495af31 | 113 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
4d12b8b1 LRV |
114 | return ERR_PTR(-EINVAL); |
115 | ||
4495af31 | 116 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); |
4d12b8b1 LRV |
117 | |
118 | dev = nfc_get_device(idx); | |
119 | if (!dev) | |
120 | return ERR_PTR(-ENODEV); | |
121 | ||
122 | return dev; | |
123 | } | |
124 | ||
125 | static int nfc_genl_dump_targets(struct sk_buff *skb, | |
0a40acb2 | 126 | struct netlink_callback *cb) |
4d12b8b1 LRV |
127 | { |
128 | int i = cb->args[0]; | |
129 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
130 | int rc; | |
131 | ||
4d12b8b1 LRV |
132 | if (!dev) { |
133 | dev = __get_device_from_cb(cb); | |
134 | if (IS_ERR(dev)) | |
135 | return PTR_ERR(dev); | |
136 | ||
137 | cb->args[1] = (long) dev; | |
138 | } | |
139 | ||
d4ccb132 | 140 | device_lock(&dev->dev); |
4d12b8b1 LRV |
141 | |
142 | cb->seq = dev->targets_generation; | |
143 | ||
144 | while (i < dev->n_targets) { | |
145 | rc = nfc_genl_send_target(skb, &dev->targets[i], cb, | |
0a40acb2 | 146 | NLM_F_MULTI); |
4d12b8b1 LRV |
147 | if (rc < 0) |
148 | break; | |
149 | ||
150 | i++; | |
151 | } | |
152 | ||
d4ccb132 | 153 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
154 | |
155 | cb->args[0] = i; | |
156 | ||
157 | return skb->len; | |
158 | } | |
159 | ||
160 | static int nfc_genl_dump_targets_done(struct netlink_callback *cb) | |
161 | { | |
162 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
163 | ||
4d12b8b1 LRV |
164 | if (dev) |
165 | nfc_put_device(dev); | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
170 | int nfc_genl_targets_found(struct nfc_dev *dev) | |
171 | { | |
172 | struct sk_buff *msg; | |
173 | void *hdr; | |
174 | ||
15e47304 | 175 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 176 | |
58050fce | 177 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
4d12b8b1 LRV |
178 | if (!msg) |
179 | return -ENOMEM; | |
180 | ||
181 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 182 | NFC_EVENT_TARGETS_FOUND); |
4d12b8b1 LRV |
183 | if (!hdr) |
184 | goto free_msg; | |
185 | ||
1e6428d8 DM |
186 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
187 | goto nla_put_failure; | |
4d12b8b1 LRV |
188 | |
189 | genlmsg_end(msg, hdr); | |
190 | ||
2a94fe48 | 191 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
4d12b8b1 LRV |
192 | |
193 | nla_put_failure: | |
4d12b8b1 LRV |
194 | free_msg: |
195 | nlmsg_free(msg); | |
196 | return -EMSGSIZE; | |
197 | } | |
198 | ||
8112a5c9 SO |
199 | int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) |
200 | { | |
201 | struct sk_buff *msg; | |
202 | void *hdr; | |
203 | ||
58050fce | 204 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
8112a5c9 SO |
205 | if (!msg) |
206 | return -ENOMEM; | |
207 | ||
208 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
209 | NFC_EVENT_TARGET_LOST); | |
210 | if (!hdr) | |
211 | goto free_msg; | |
212 | ||
59ef43e6 JL |
213 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || |
214 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
215 | goto nla_put_failure; | |
8112a5c9 SO |
216 | |
217 | genlmsg_end(msg, hdr); | |
218 | ||
2a94fe48 | 219 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
8112a5c9 SO |
220 | |
221 | return 0; | |
222 | ||
fc40a8c1 | 223 | nla_put_failure: |
fc40a8c1 SO |
224 | free_msg: |
225 | nlmsg_free(msg); | |
226 | return -EMSGSIZE; | |
227 | } | |
228 | ||
229 | int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) | |
230 | { | |
231 | struct sk_buff *msg; | |
232 | void *hdr; | |
233 | ||
58050fce | 234 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
235 | if (!msg) |
236 | return -ENOMEM; | |
237 | ||
238 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
239 | NFC_EVENT_TM_ACTIVATED); | |
240 | if (!hdr) | |
241 | goto free_msg; | |
242 | ||
243 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
244 | goto nla_put_failure; | |
245 | if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) | |
246 | goto nla_put_failure; | |
247 | ||
248 | genlmsg_end(msg, hdr); | |
249 | ||
2a94fe48 | 250 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
251 | |
252 | return 0; | |
253 | ||
254 | nla_put_failure: | |
fc40a8c1 SO |
255 | free_msg: |
256 | nlmsg_free(msg); | |
257 | return -EMSGSIZE; | |
258 | } | |
259 | ||
260 | int nfc_genl_tm_deactivated(struct nfc_dev *dev) | |
261 | { | |
262 | struct sk_buff *msg; | |
263 | void *hdr; | |
264 | ||
58050fce | 265 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
fc40a8c1 SO |
266 | if (!msg) |
267 | return -ENOMEM; | |
268 | ||
269 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
270 | NFC_EVENT_TM_DEACTIVATED); | |
271 | if (!hdr) | |
272 | goto free_msg; | |
273 | ||
274 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
275 | goto nla_put_failure; | |
276 | ||
277 | genlmsg_end(msg, hdr); | |
278 | ||
2a94fe48 | 279 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
fc40a8c1 SO |
280 | |
281 | return 0; | |
282 | ||
8112a5c9 | 283 | nla_put_failure: |
8112a5c9 SO |
284 | free_msg: |
285 | nlmsg_free(msg); | |
286 | return -EMSGSIZE; | |
287 | } | |
288 | ||
85a2566d OH |
289 | static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg) |
290 | { | |
291 | if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || | |
292 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
293 | nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || | |
294 | nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || | |
295 | nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) | |
296 | return -1; | |
297 | return 0; | |
298 | } | |
299 | ||
4d12b8b1 LRV |
300 | int nfc_genl_device_added(struct nfc_dev *dev) |
301 | { | |
302 | struct sk_buff *msg; | |
303 | void *hdr; | |
304 | ||
58050fce | 305 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
306 | if (!msg) |
307 | return -ENOMEM; | |
308 | ||
309 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 310 | NFC_EVENT_DEVICE_ADDED); |
4d12b8b1 LRV |
311 | if (!hdr) |
312 | goto free_msg; | |
313 | ||
85a2566d | 314 | if (nfc_genl_setup_device_added(dev, msg)) |
1e6428d8 | 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: | |
4d12b8b1 LRV |
324 | free_msg: |
325 | nlmsg_free(msg); | |
326 | return -EMSGSIZE; | |
327 | } | |
328 | ||
329 | int nfc_genl_device_removed(struct nfc_dev *dev) | |
330 | { | |
331 | struct sk_buff *msg; | |
332 | void *hdr; | |
333 | ||
58050fce | 334 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
335 | if (!msg) |
336 | return -ENOMEM; | |
337 | ||
338 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 339 | NFC_EVENT_DEVICE_REMOVED); |
4d12b8b1 LRV |
340 | if (!hdr) |
341 | goto free_msg; | |
342 | ||
1e6428d8 DM |
343 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
344 | goto nla_put_failure; | |
4d12b8b1 LRV |
345 | |
346 | genlmsg_end(msg, hdr); | |
347 | ||
2a94fe48 | 348 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
4d12b8b1 LRV |
349 | |
350 | return 0; | |
351 | ||
352 | nla_put_failure: | |
4d12b8b1 LRV |
353 | free_msg: |
354 | nlmsg_free(msg); | |
355 | return -EMSGSIZE; | |
356 | } | |
357 | ||
d9b8d8e1 TE |
358 | int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) |
359 | { | |
360 | struct sk_buff *msg; | |
361 | struct nlattr *sdp_attr, *uri_attr; | |
362 | struct nfc_llcp_sdp_tlv *sdres; | |
363 | struct hlist_node *n; | |
364 | void *hdr; | |
365 | int rc = -EMSGSIZE; | |
366 | int i; | |
367 | ||
368 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
369 | if (!msg) | |
370 | return -ENOMEM; | |
371 | ||
372 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
373 | NFC_EVENT_LLC_SDRES); | |
374 | if (!hdr) | |
375 | goto free_msg; | |
376 | ||
377 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
378 | goto nla_put_failure; | |
379 | ||
ae0be8de | 380 | sdp_attr = nla_nest_start_noflag(msg, NFC_ATTR_LLC_SDP); |
d9b8d8e1 TE |
381 | if (sdp_attr == NULL) { |
382 | rc = -ENOMEM; | |
383 | goto nla_put_failure; | |
384 | } | |
385 | ||
386 | i = 1; | |
387 | hlist_for_each_entry_safe(sdres, n, sdres_list, node) { | |
388 | pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); | |
389 | ||
ae0be8de | 390 | uri_attr = nla_nest_start_noflag(msg, i++); |
d9b8d8e1 TE |
391 | if (uri_attr == NULL) { |
392 | rc = -ENOMEM; | |
393 | goto nla_put_failure; | |
394 | } | |
395 | ||
396 | if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) | |
397 | goto nla_put_failure; | |
398 | ||
399 | if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) | |
400 | goto nla_put_failure; | |
401 | ||
402 | nla_nest_end(msg, uri_attr); | |
403 | ||
404 | hlist_del(&sdres->node); | |
405 | ||
406 | nfc_llcp_free_sdp_tlv(sdres); | |
407 | } | |
408 | ||
409 | nla_nest_end(msg, sdp_attr); | |
410 | ||
411 | genlmsg_end(msg, hdr); | |
412 | ||
2a94fe48 | 413 | return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
d9b8d8e1 TE |
414 | |
415 | nla_put_failure: | |
d9b8d8e1 TE |
416 | free_msg: |
417 | nlmsg_free(msg); | |
418 | ||
419 | nfc_llcp_free_sdp_tlv_list(sdres_list); | |
420 | ||
421 | return rc; | |
422 | } | |
423 | ||
2757c372 SO |
424 | int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) |
425 | { | |
426 | struct sk_buff *msg; | |
427 | void *hdr; | |
428 | ||
429 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
430 | if (!msg) | |
431 | return -ENOMEM; | |
432 | ||
433 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
434 | NFC_EVENT_SE_ADDED); | |
435 | if (!hdr) | |
436 | goto free_msg; | |
437 | ||
438 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
439 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
440 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) | |
441 | goto nla_put_failure; | |
442 | ||
443 | genlmsg_end(msg, hdr); | |
444 | ||
2a94fe48 | 445 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
446 | |
447 | return 0; | |
448 | ||
449 | nla_put_failure: | |
2757c372 SO |
450 | free_msg: |
451 | nlmsg_free(msg); | |
452 | return -EMSGSIZE; | |
453 | } | |
454 | ||
455 | int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) | |
456 | { | |
457 | struct sk_buff *msg; | |
458 | void *hdr; | |
459 | ||
460 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
461 | if (!msg) | |
462 | return -ENOMEM; | |
463 | ||
464 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
465 | NFC_EVENT_SE_REMOVED); | |
466 | if (!hdr) | |
467 | goto free_msg; | |
468 | ||
469 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
470 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) | |
471 | goto nla_put_failure; | |
472 | ||
473 | genlmsg_end(msg, hdr); | |
474 | ||
2a94fe48 | 475 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
2757c372 SO |
476 | |
477 | return 0; | |
478 | ||
479 | nla_put_failure: | |
2757c372 SO |
480 | free_msg: |
481 | nlmsg_free(msg); | |
482 | return -EMSGSIZE; | |
483 | } | |
484 | ||
447b27c4 CR |
485 | int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx, |
486 | struct nfc_evt_transaction *evt_transaction) | |
487 | { | |
488 | struct nfc_se *se; | |
489 | struct sk_buff *msg; | |
490 | void *hdr; | |
491 | ||
492 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
493 | if (!msg) | |
494 | return -ENOMEM; | |
495 | ||
496 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
497 | NFC_EVENT_SE_TRANSACTION); | |
498 | if (!hdr) | |
499 | goto free_msg; | |
500 | ||
501 | se = nfc_find_se(dev, se_idx); | |
502 | if (!se) | |
503 | goto free_msg; | |
504 | ||
505 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
506 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
507 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) || | |
508 | nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len, | |
509 | evt_transaction->aid) || | |
510 | nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len, | |
511 | evt_transaction->params)) | |
512 | goto nla_put_failure; | |
513 | ||
514 | /* evt_transaction is no more used */ | |
515 | devm_kfree(&dev->dev, evt_transaction); | |
516 | ||
517 | genlmsg_end(msg, hdr); | |
518 | ||
519 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
520 | ||
521 | return 0; | |
522 | ||
523 | nla_put_failure: | |
447b27c4 CR |
524 | free_msg: |
525 | /* evt_transaction is no more used */ | |
526 | devm_kfree(&dev->dev, evt_transaction); | |
527 | nlmsg_free(msg); | |
528 | return -EMSGSIZE; | |
529 | } | |
530 | ||
9afec6d3 CR |
531 | int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx) |
532 | { | |
533 | struct nfc_se *se; | |
534 | struct sk_buff *msg; | |
535 | void *hdr; | |
536 | ||
537 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
538 | if (!msg) | |
539 | return -ENOMEM; | |
540 | ||
541 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
542 | NFC_EVENT_SE_CONNECTIVITY); | |
543 | if (!hdr) | |
544 | goto free_msg; | |
545 | ||
546 | se = nfc_find_se(dev, se_idx); | |
547 | if (!se) | |
548 | goto free_msg; | |
549 | ||
550 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
551 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || | |
552 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
553 | goto nla_put_failure; | |
554 | ||
555 | genlmsg_end(msg, hdr); | |
556 | ||
557 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); | |
558 | ||
559 | return 0; | |
560 | ||
561 | nla_put_failure: | |
9afec6d3 CR |
562 | free_msg: |
563 | nlmsg_free(msg); | |
564 | return -EMSGSIZE; | |
565 | } | |
566 | ||
4d12b8b1 | 567 | static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
15e47304 | 568 | u32 portid, u32 seq, |
0a40acb2 SO |
569 | struct netlink_callback *cb, |
570 | int flags) | |
4d12b8b1 LRV |
571 | { |
572 | void *hdr; | |
573 | ||
15e47304 | 574 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
0a40acb2 | 575 | NFC_CMD_GET_DEVICE); |
4d12b8b1 LRV |
576 | if (!hdr) |
577 | return -EMSGSIZE; | |
578 | ||
579 | if (cb) | |
0a833c29 | 580 | genl_dump_check_consistent(cb, hdr); |
4d12b8b1 | 581 | |
85a2566d | 582 | if (nfc_genl_setup_device_added(dev, msg)) |
1e6428d8 | 583 | goto nla_put_failure; |
4d12b8b1 | 584 | |
053c095a JB |
585 | genlmsg_end(msg, hdr); |
586 | return 0; | |
4d12b8b1 LRV |
587 | |
588 | nla_put_failure: | |
589 | genlmsg_cancel(msg, hdr); | |
590 | return -EMSGSIZE; | |
591 | } | |
592 | ||
593 | static int nfc_genl_dump_devices(struct sk_buff *skb, | |
0a40acb2 | 594 | struct netlink_callback *cb) |
4d12b8b1 LRV |
595 | { |
596 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
597 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
598 | bool first_call = false; | |
599 | ||
4d12b8b1 LRV |
600 | if (!iter) { |
601 | first_call = true; | |
602 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
603 | if (!iter) | |
604 | return -ENOMEM; | |
605 | cb->args[0] = (long) iter; | |
606 | } | |
607 | ||
608 | mutex_lock(&nfc_devlist_mutex); | |
609 | ||
610 | cb->seq = nfc_devlist_generation; | |
611 | ||
612 | if (first_call) { | |
613 | nfc_device_iter_init(iter); | |
614 | dev = nfc_device_iter_next(iter); | |
615 | } | |
616 | ||
617 | while (dev) { | |
618 | int rc; | |
619 | ||
15e47304 | 620 | rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
0a40acb2 | 621 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
4d12b8b1 LRV |
622 | if (rc < 0) |
623 | break; | |
624 | ||
625 | dev = nfc_device_iter_next(iter); | |
626 | } | |
627 | ||
628 | mutex_unlock(&nfc_devlist_mutex); | |
629 | ||
630 | cb->args[1] = (long) dev; | |
631 | ||
632 | return skb->len; | |
633 | } | |
634 | ||
635 | static int nfc_genl_dump_devices_done(struct netlink_callback *cb) | |
636 | { | |
637 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
638 | ||
4d12b8b1 LRV |
639 | nfc_device_iter_exit(iter); |
640 | kfree(iter); | |
641 | ||
642 | return 0; | |
643 | } | |
644 | ||
1ed28f61 | 645 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 646 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
647 | { |
648 | struct sk_buff *msg; | |
649 | void *hdr; | |
650 | ||
651 | pr_debug("DEP link is up\n"); | |
652 | ||
58050fce | 653 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
654 | if (!msg) |
655 | return -ENOMEM; | |
656 | ||
0a40acb2 | 657 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
658 | if (!hdr) |
659 | goto free_msg; | |
660 | ||
1e6428d8 DM |
661 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
662 | goto nla_put_failure; | |
663 | if (rf_mode == NFC_RF_INITIATOR && | |
664 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
665 | goto nla_put_failure; | |
666 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
667 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
668 | goto nla_put_failure; | |
1ed28f61 SO |
669 | |
670 | genlmsg_end(msg, hdr); | |
671 | ||
672 | dev->dep_link_up = true; | |
673 | ||
2a94fe48 | 674 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
675 | |
676 | return 0; | |
677 | ||
678 | nla_put_failure: | |
1ed28f61 SO |
679 | free_msg: |
680 | nlmsg_free(msg); | |
681 | return -EMSGSIZE; | |
682 | } | |
683 | ||
684 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
685 | { | |
686 | struct sk_buff *msg; | |
687 | void *hdr; | |
688 | ||
689 | pr_debug("DEP link is down\n"); | |
690 | ||
58050fce | 691 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
692 | if (!msg) |
693 | return -ENOMEM; | |
694 | ||
695 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 696 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
697 | if (!hdr) |
698 | goto free_msg; | |
699 | ||
1e6428d8 DM |
700 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
701 | goto nla_put_failure; | |
1ed28f61 SO |
702 | |
703 | genlmsg_end(msg, hdr); | |
704 | ||
2a94fe48 | 705 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
706 | |
707 | return 0; | |
708 | ||
709 | nla_put_failure: | |
1ed28f61 SO |
710 | free_msg: |
711 | nlmsg_free(msg); | |
712 | return -EMSGSIZE; | |
713 | } | |
714 | ||
4d12b8b1 LRV |
715 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
716 | { | |
717 | struct sk_buff *msg; | |
718 | struct nfc_dev *dev; | |
719 | u32 idx; | |
720 | int rc = -ENOBUFS; | |
721 | ||
4d12b8b1 LRV |
722 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
723 | return -EINVAL; | |
724 | ||
725 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
726 | ||
727 | dev = nfc_get_device(idx); | |
728 | if (!dev) | |
729 | return -ENODEV; | |
730 | ||
58050fce | 731 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
732 | if (!msg) { |
733 | rc = -ENOMEM; | |
734 | goto out_putdev; | |
735 | } | |
736 | ||
15e47304 | 737 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 738 | NULL, 0); |
4d12b8b1 LRV |
739 | if (rc < 0) |
740 | goto out_free; | |
741 | ||
742 | nfc_put_device(dev); | |
743 | ||
744 | return genlmsg_reply(msg, info); | |
745 | ||
746 | out_free: | |
747 | nlmsg_free(msg); | |
748 | out_putdev: | |
749 | nfc_put_device(dev); | |
750 | return rc; | |
751 | } | |
752 | ||
8b3fe7b5 IE |
753 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
754 | { | |
755 | struct nfc_dev *dev; | |
756 | int rc; | |
757 | u32 idx; | |
758 | ||
8b3fe7b5 IE |
759 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
760 | return -EINVAL; | |
761 | ||
762 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
763 | ||
764 | dev = nfc_get_device(idx); | |
765 | if (!dev) | |
766 | return -ENODEV; | |
767 | ||
768 | rc = nfc_dev_up(dev); | |
769 | ||
770 | nfc_put_device(dev); | |
771 | return rc; | |
772 | } | |
773 | ||
774 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
775 | { | |
776 | struct nfc_dev *dev; | |
777 | int rc; | |
778 | u32 idx; | |
779 | ||
8b3fe7b5 IE |
780 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
781 | return -EINVAL; | |
782 | ||
783 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
784 | ||
785 | dev = nfc_get_device(idx); | |
786 | if (!dev) | |
787 | return -ENODEV; | |
788 | ||
789 | rc = nfc_dev_down(dev); | |
790 | ||
791 | nfc_put_device(dev); | |
792 | return rc; | |
793 | } | |
794 | ||
4d12b8b1 LRV |
795 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
796 | { | |
797 | struct nfc_dev *dev; | |
798 | int rc; | |
799 | u32 idx; | |
fe7c5800 | 800 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 801 | |
1ed28f61 SO |
802 | pr_debug("Poll start\n"); |
803 | ||
4d12b8b1 | 804 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
805 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
806 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 807 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
808 | return -EINVAL; |
809 | ||
810 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
811 | |
812 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
813 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
814 | |
815 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
816 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
817 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
818 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
819 | |
820 | dev = nfc_get_device(idx); | |
821 | if (!dev) | |
822 | return -ENODEV; | |
823 | ||
824 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
825 | ||
fe7c5800 | 826 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 827 | if (!rc) |
15e47304 | 828 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
829 | |
830 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
831 | ||
832 | nfc_put_device(dev); | |
833 | return rc; | |
834 | } | |
835 | ||
836 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
837 | { | |
838 | struct nfc_dev *dev; | |
839 | int rc; | |
840 | u32 idx; | |
841 | ||
4d12b8b1 LRV |
842 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
843 | return -EINVAL; | |
844 | ||
845 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
846 | ||
847 | dev = nfc_get_device(idx); | |
848 | if (!dev) | |
849 | return -ENODEV; | |
850 | ||
a831b913 SO |
851 | device_lock(&dev->dev); |
852 | ||
853 | if (!dev->polling) { | |
854 | device_unlock(&dev->dev); | |
855 | return -EINVAL; | |
856 | } | |
857 | ||
858 | device_unlock(&dev->dev); | |
859 | ||
4d12b8b1 LRV |
860 | mutex_lock(&dev->genl_data.genl_data_mutex); |
861 | ||
15e47304 | 862 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
863 | rc = -EBUSY; |
864 | goto out; | |
865 | } | |
866 | ||
867 | rc = nfc_stop_poll(dev); | |
15e47304 | 868 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
869 | |
870 | out: | |
871 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
872 | nfc_put_device(dev); | |
873 | return rc; | |
874 | } | |
875 | ||
3682f49f CR |
876 | static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info) |
877 | { | |
878 | struct nfc_dev *dev; | |
879 | u32 device_idx, target_idx, protocol; | |
880 | int rc; | |
881 | ||
a0323b97 MJ |
882 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
883 | !info->attrs[NFC_ATTR_TARGET_INDEX] || | |
884 | !info->attrs[NFC_ATTR_PROTOCOLS]) | |
3682f49f CR |
885 | return -EINVAL; |
886 | ||
887 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
888 | ||
889 | dev = nfc_get_device(device_idx); | |
890 | if (!dev) | |
891 | return -ENODEV; | |
892 | ||
893 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
894 | protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
895 | ||
96d4581f | 896 | nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); |
3682f49f CR |
897 | rc = nfc_activate_target(dev, target_idx, protocol); |
898 | ||
899 | nfc_put_device(dev); | |
3267183c | 900 | return rc; |
3682f49f CR |
901 | } |
902 | ||
4d63adfe MG |
903 | static int nfc_genl_deactivate_target(struct sk_buff *skb, |
904 | struct genl_info *info) | |
905 | { | |
906 | struct nfc_dev *dev; | |
907 | u32 device_idx, target_idx; | |
908 | int rc; | |
909 | ||
385097a3 YX |
910 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
911 | !info->attrs[NFC_ATTR_TARGET_INDEX]) | |
4d63adfe MG |
912 | return -EINVAL; |
913 | ||
914 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
915 | ||
916 | dev = nfc_get_device(device_idx); | |
917 | if (!dev) | |
918 | return -ENODEV; | |
919 | ||
920 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
921 | ||
922 | rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); | |
923 | ||
924 | nfc_put_device(dev); | |
925 | return rc; | |
926 | } | |
927 | ||
1ed28f61 SO |
928 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
929 | { | |
930 | struct nfc_dev *dev; | |
931 | int rc, tgt_idx; | |
932 | u32 idx; | |
47807d3d | 933 | u8 comm; |
1ed28f61 SO |
934 | |
935 | pr_debug("DEP link up\n"); | |
936 | ||
937 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 938 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
939 | return -EINVAL; |
940 | ||
941 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
942 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
943 | tgt_idx = NFC_TARGET_IDX_ANY; | |
944 | else | |
945 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
946 | ||
947 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
948 | |
949 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
950 | return -EINVAL; | |
951 | ||
1ed28f61 SO |
952 | dev = nfc_get_device(idx); |
953 | if (!dev) | |
954 | return -ENODEV; | |
955 | ||
47807d3d | 956 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
957 | |
958 | nfc_put_device(dev); | |
959 | ||
960 | return rc; | |
961 | } | |
962 | ||
963 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
964 | { | |
965 | struct nfc_dev *dev; | |
966 | int rc; | |
967 | u32 idx; | |
968 | ||
18917d51 AK |
969 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
970 | !info->attrs[NFC_ATTR_TARGET_INDEX]) | |
1ed28f61 SO |
971 | return -EINVAL; |
972 | ||
973 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
974 | ||
975 | dev = nfc_get_device(idx); | |
976 | if (!dev) | |
977 | return -ENODEV; | |
978 | ||
979 | rc = nfc_dep_link_down(dev); | |
980 | ||
981 | nfc_put_device(dev); | |
982 | return rc; | |
983 | } | |
984 | ||
52feb444 TE |
985 | static int nfc_genl_send_params(struct sk_buff *msg, |
986 | struct nfc_llcp_local *local, | |
987 | u32 portid, u32 seq) | |
988 | { | |
989 | void *hdr; | |
990 | ||
991 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
992 | NFC_CMD_LLC_GET_PARAMS); | |
993 | if (!hdr) | |
994 | return -EMSGSIZE; | |
995 | ||
996 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
997 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
998 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
999 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
1000 | goto nla_put_failure; | |
1001 | ||
053c095a JB |
1002 | genlmsg_end(msg, hdr); |
1003 | return 0; | |
52feb444 TE |
1004 | |
1005 | nla_put_failure: | |
52feb444 TE |
1006 | genlmsg_cancel(msg, hdr); |
1007 | return -EMSGSIZE; | |
1008 | } | |
1009 | ||
1010 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
1011 | { | |
1012 | struct nfc_dev *dev; | |
1013 | struct nfc_llcp_local *local; | |
1014 | int rc = 0; | |
1015 | struct sk_buff *msg = NULL; | |
1016 | u32 idx; | |
1017 | ||
18917d51 AK |
1018 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
1019 | !info->attrs[NFC_ATTR_FIRMWARE_NAME]) | |
52feb444 TE |
1020 | return -EINVAL; |
1021 | ||
1022 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1023 | ||
1024 | dev = nfc_get_device(idx); | |
1025 | if (!dev) | |
1026 | return -ENODEV; | |
1027 | ||
1028 | device_lock(&dev->dev); | |
1029 | ||
1030 | local = nfc_llcp_find_local(dev); | |
1031 | if (!local) { | |
1032 | rc = -ENODEV; | |
1033 | goto exit; | |
1034 | } | |
1035 | ||
1036 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1037 | if (!msg) { | |
1038 | rc = -ENOMEM; | |
1039 | goto exit; | |
1040 | } | |
1041 | ||
1042 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
1043 | ||
1044 | exit: | |
1045 | device_unlock(&dev->dev); | |
1046 | ||
1047 | nfc_put_device(dev); | |
1048 | ||
1049 | if (rc < 0) { | |
1050 | if (msg) | |
1051 | nlmsg_free(msg); | |
1052 | ||
1053 | return rc; | |
1054 | } | |
1055 | ||
1056 | return genlmsg_reply(msg, info); | |
1057 | } | |
1058 | ||
1059 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
1060 | { | |
1061 | struct nfc_dev *dev; | |
1062 | struct nfc_llcp_local *local; | |
1063 | u8 rw = 0; | |
1064 | u16 miux = 0; | |
1065 | u32 idx; | |
1066 | int rc = 0; | |
1067 | ||
1068 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1069 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
1070 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
1071 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
1072 | return -EINVAL; | |
1073 | ||
1074 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
1075 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
1076 | ||
1077 | if (rw > LLCP_MAX_RW) | |
1078 | return -EINVAL; | |
1079 | } | |
1080 | ||
1081 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
1082 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
1083 | ||
1084 | if (miux > LLCP_MAX_MIUX) | |
1085 | return -EINVAL; | |
1086 | } | |
1087 | ||
1088 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1089 | ||
1090 | dev = nfc_get_device(idx); | |
1091 | if (!dev) | |
1092 | return -ENODEV; | |
1093 | ||
1094 | device_lock(&dev->dev); | |
1095 | ||
1096 | local = nfc_llcp_find_local(dev); | |
1097 | if (!local) { | |
52feb444 TE |
1098 | rc = -ENODEV; |
1099 | goto exit; | |
1100 | } | |
1101 | ||
1102 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
1103 | if (dev->dep_link_up) { | |
1104 | rc = -EINPROGRESS; | |
1105 | goto exit; | |
1106 | } | |
1107 | ||
1108 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
1109 | } | |
1110 | ||
1111 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
1112 | local->rw = rw; | |
1113 | ||
1114 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
1115 | local->miux = cpu_to_be16(miux); | |
1116 | ||
1117 | exit: | |
1118 | device_unlock(&dev->dev); | |
1119 | ||
1120 | nfc_put_device(dev); | |
1121 | ||
1122 | return rc; | |
1123 | } | |
1124 | ||
d9b8d8e1 TE |
1125 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1126 | { | |
1127 | struct nfc_dev *dev; | |
1128 | struct nfc_llcp_local *local; | |
1129 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1130 | u32 idx; | |
1131 | u8 tid; | |
1132 | char *uri; | |
1133 | int rc = 0, rem; | |
1134 | size_t uri_len, tlvs_len; | |
1135 | struct hlist_head sdreq_list; | |
1136 | struct nfc_llcp_sdp_tlv *sdreq; | |
1137 | ||
1138 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1139 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1140 | return -EINVAL; | |
1141 | ||
1142 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1143 | ||
1144 | dev = nfc_get_device(idx); | |
9abebb8a JL |
1145 | if (!dev) |
1146 | return -ENODEV; | |
d9b8d8e1 TE |
1147 | |
1148 | device_lock(&dev->dev); | |
1149 | ||
1150 | if (dev->dep_link_up == false) { | |
1151 | rc = -ENOLINK; | |
1152 | goto exit; | |
1153 | } | |
1154 | ||
1155 | local = nfc_llcp_find_local(dev); | |
1156 | if (!local) { | |
d9b8d8e1 TE |
1157 | rc = -ENODEV; |
1158 | goto exit; | |
1159 | } | |
1160 | ||
1161 | INIT_HLIST_HEAD(&sdreq_list); | |
1162 | ||
1163 | tlvs_len = 0; | |
1164 | ||
1165 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
8cb08174 JB |
1166 | rc = nla_parse_nested_deprecated(sdp_attrs, NFC_SDP_ATTR_MAX, |
1167 | attr, nfc_sdp_genl_policy, | |
1168 | info->extack); | |
d9b8d8e1 TE |
1169 | |
1170 | if (rc != 0) { | |
1171 | rc = -EINVAL; | |
1172 | goto exit; | |
1173 | } | |
1174 | ||
1175 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1176 | continue; | |
1177 | ||
1178 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1179 | if (uri_len == 0) | |
1180 | continue; | |
1181 | ||
1182 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1183 | if (uri == NULL || *uri == 0) | |
1184 | continue; | |
1185 | ||
1186 | tid = local->sdreq_next_tid++; | |
1187 | ||
1188 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1189 | if (sdreq == NULL) { | |
1190 | rc = -ENOMEM; | |
1191 | goto exit; | |
1192 | } | |
1193 | ||
1194 | tlvs_len += sdreq->tlv_len; | |
1195 | ||
1196 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1197 | } | |
1198 | ||
1199 | if (hlist_empty(&sdreq_list)) { | |
1200 | rc = -EINVAL; | |
1201 | goto exit; | |
1202 | } | |
1203 | ||
1204 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
1205 | exit: | |
1206 | device_unlock(&dev->dev); | |
1207 | ||
1208 | nfc_put_device(dev); | |
1209 | ||
1210 | return rc; | |
1211 | } | |
1212 | ||
9ea7187c | 1213 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1214 | { |
1215 | struct nfc_dev *dev; | |
1216 | int rc; | |
1217 | u32 idx; | |
1218 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1219 | ||
1220 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) | |
1221 | return -EINVAL; | |
1222 | ||
1223 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1224 | ||
1225 | dev = nfc_get_device(idx); | |
1226 | if (!dev) | |
1227 | return -ENODEV; | |
1228 | ||
1229 | nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], | |
1230 | sizeof(firmware_name)); | |
1231 | ||
9ea7187c | 1232 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1233 | |
1234 | nfc_put_device(dev); | |
1235 | return rc; | |
1236 | } | |
1237 | ||
352a5f5f EL |
1238 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1239 | u32 result) | |
9674da87 EL |
1240 | { |
1241 | struct sk_buff *msg; | |
1242 | void *hdr; | |
1243 | ||
1244 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1245 | if (!msg) | |
1246 | return -ENOMEM; | |
1247 | ||
1248 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1249 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1250 | if (!hdr) |
1251 | goto free_msg; | |
1252 | ||
1253 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1254 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1255 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1256 | goto nla_put_failure; | |
1257 | ||
1258 | genlmsg_end(msg, hdr); | |
1259 | ||
2a94fe48 | 1260 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da87 EL |
1261 | |
1262 | return 0; | |
1263 | ||
1264 | nla_put_failure: | |
9674da87 EL |
1265 | free_msg: |
1266 | nlmsg_free(msg); | |
1267 | return -EMSGSIZE; | |
1268 | } | |
1269 | ||
be085653 SO |
1270 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1271 | { | |
1272 | struct nfc_dev *dev; | |
1273 | int rc; | |
1274 | u32 idx, se_idx; | |
1275 | ||
1276 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1277 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1278 | return -EINVAL; | |
1279 | ||
1280 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1281 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1282 | ||
1283 | dev = nfc_get_device(idx); | |
1284 | if (!dev) | |
1285 | return -ENODEV; | |
1286 | ||
1287 | rc = nfc_enable_se(dev, se_idx); | |
1288 | ||
1289 | nfc_put_device(dev); | |
1290 | return rc; | |
1291 | } | |
1292 | ||
1293 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1294 | { | |
1295 | struct nfc_dev *dev; | |
1296 | int rc; | |
1297 | u32 idx, se_idx; | |
1298 | ||
1299 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1300 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1301 | return -EINVAL; | |
1302 | ||
1303 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1304 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1305 | ||
1306 | dev = nfc_get_device(idx); | |
1307 | if (!dev) | |
1308 | return -ENODEV; | |
1309 | ||
1310 | rc = nfc_disable_se(dev, se_idx); | |
1311 | ||
1312 | nfc_put_device(dev); | |
1313 | return rc; | |
1314 | } | |
1315 | ||
ac22ac46 SO |
1316 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1317 | u32 portid, u32 seq, | |
1318 | struct netlink_callback *cb, | |
1319 | int flags) | |
1320 | { | |
1321 | void *hdr; | |
1322 | struct nfc_se *se, *n; | |
1323 | ||
1324 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1325 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1326 | NFC_CMD_GET_SE); | |
1327 | if (!hdr) | |
1328 | goto nla_put_failure; | |
1329 | ||
1330 | if (cb) | |
0a833c29 | 1331 | genl_dump_check_consistent(cb, hdr); |
ac22ac46 SO |
1332 | |
1333 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1334 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1335 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1336 | goto nla_put_failure; | |
1337 | ||
053c095a | 1338 | genlmsg_end(msg, hdr); |
ac22ac46 SO |
1339 | } |
1340 | ||
1341 | return 0; | |
1342 | ||
1343 | nla_put_failure: | |
1344 | genlmsg_cancel(msg, hdr); | |
1345 | return -EMSGSIZE; | |
1346 | } | |
1347 | ||
1348 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1349 | struct netlink_callback *cb) | |
1350 | { | |
1351 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1352 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1353 | bool first_call = false; | |
1354 | ||
1355 | if (!iter) { | |
1356 | first_call = true; | |
1357 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1358 | if (!iter) | |
1359 | return -ENOMEM; | |
1360 | cb->args[0] = (long) iter; | |
1361 | } | |
1362 | ||
1363 | mutex_lock(&nfc_devlist_mutex); | |
1364 | ||
1365 | cb->seq = nfc_devlist_generation; | |
1366 | ||
1367 | if (first_call) { | |
1368 | nfc_device_iter_init(iter); | |
1369 | dev = nfc_device_iter_next(iter); | |
1370 | } | |
1371 | ||
1372 | while (dev) { | |
1373 | int rc; | |
1374 | ||
1375 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1376 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1377 | if (rc < 0) | |
1378 | break; | |
1379 | ||
1380 | dev = nfc_device_iter_next(iter); | |
1381 | } | |
1382 | ||
1383 | mutex_unlock(&nfc_devlist_mutex); | |
1384 | ||
1385 | cb->args[1] = (long) dev; | |
1386 | ||
1387 | return skb->len; | |
1388 | } | |
1389 | ||
1390 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1391 | { | |
1392 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1393 | ||
1394 | nfc_device_iter_exit(iter); | |
1395 | kfree(iter); | |
1396 | ||
1397 | return 0; | |
1398 | } | |
1399 | ||
cd96db6f CR |
1400 | static int nfc_se_io(struct nfc_dev *dev, u32 se_idx, |
1401 | u8 *apdu, size_t apdu_length, | |
1402 | se_io_cb_t cb, void *cb_context) | |
1403 | { | |
1404 | struct nfc_se *se; | |
1405 | int rc; | |
1406 | ||
1407 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
1408 | ||
1409 | device_lock(&dev->dev); | |
1410 | ||
1411 | if (!device_is_registered(&dev->dev)) { | |
1412 | rc = -ENODEV; | |
1413 | goto error; | |
1414 | } | |
1415 | ||
1416 | if (!dev->dev_up) { | |
1417 | rc = -ENODEV; | |
1418 | goto error; | |
1419 | } | |
1420 | ||
1421 | if (!dev->ops->se_io) { | |
1422 | rc = -EOPNOTSUPP; | |
1423 | goto error; | |
1424 | } | |
1425 | ||
1426 | se = nfc_find_se(dev, se_idx); | |
1427 | if (!se) { | |
1428 | rc = -EINVAL; | |
1429 | goto error; | |
1430 | } | |
1431 | ||
1432 | if (se->state != NFC_SE_ENABLED) { | |
1433 | rc = -ENODEV; | |
1434 | goto error; | |
1435 | } | |
1436 | ||
1437 | rc = dev->ops->se_io(dev, se_idx, apdu, | |
1438 | apdu_length, cb, cb_context); | |
1439 | ||
1440 | error: | |
1441 | device_unlock(&dev->dev); | |
1442 | return rc; | |
1443 | } | |
1444 | ||
5ce3f32b SO |
1445 | struct se_io_ctx { |
1446 | u32 dev_idx; | |
1447 | u32 se_idx; | |
1448 | }; | |
1449 | ||
ddc1a70b | 1450 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1451 | { |
1452 | struct se_io_ctx *ctx = context; | |
1453 | struct sk_buff *msg; | |
1454 | void *hdr; | |
1455 | ||
1456 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1457 | if (!msg) { | |
1458 | kfree(ctx); | |
1459 | return; | |
1460 | } | |
1461 | ||
1462 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1463 | NFC_CMD_SE_IO); | |
1464 | if (!hdr) | |
1465 | goto free_msg; | |
1466 | ||
1467 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1468 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1469 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1470 | goto nla_put_failure; | |
1471 | ||
1472 | genlmsg_end(msg, hdr); | |
1473 | ||
2a94fe48 | 1474 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1475 | |
1476 | kfree(ctx); | |
1477 | ||
1478 | return; | |
1479 | ||
1480 | nla_put_failure: | |
5ce3f32b SO |
1481 | free_msg: |
1482 | nlmsg_free(msg); | |
1483 | kfree(ctx); | |
1484 | ||
1485 | return; | |
1486 | } | |
1487 | ||
1488 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1489 | { | |
1490 | struct nfc_dev *dev; | |
1491 | struct se_io_ctx *ctx; | |
1492 | u32 dev_idx, se_idx; | |
1493 | u8 *apdu; | |
1494 | size_t apdu_len; | |
1495 | ||
1496 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1497 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1498 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1499 | return -EINVAL; | |
1500 | ||
1501 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1502 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1503 | ||
1504 | dev = nfc_get_device(dev_idx); | |
1505 | if (!dev) | |
1506 | return -ENODEV; | |
1507 | ||
1508 | if (!dev->ops || !dev->ops->se_io) | |
1509 | return -ENOTSUPP; | |
1510 | ||
1511 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
1512 | if (apdu_len == 0) | |
1513 | return -EINVAL; | |
1514 | ||
1515 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
1516 | if (!apdu) | |
1517 | return -EINVAL; | |
1518 | ||
1519 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
1520 | if (!ctx) | |
1521 | return -ENOMEM; | |
1522 | ||
1523 | ctx->dev_idx = dev_idx; | |
1524 | ctx->se_idx = se_idx; | |
1525 | ||
cd96db6f | 1526 | return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); |
5ce3f32b SO |
1527 | } |
1528 | ||
9e58095f SO |
1529 | static int nfc_genl_vendor_cmd(struct sk_buff *skb, |
1530 | struct genl_info *info) | |
1531 | { | |
1532 | struct nfc_dev *dev; | |
1533 | struct nfc_vendor_cmd *cmd; | |
1534 | u32 dev_idx, vid, subcmd; | |
1535 | u8 *data; | |
1536 | size_t data_len; | |
29e76924 | 1537 | int i, err; |
9e58095f SO |
1538 | |
1539 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1540 | !info->attrs[NFC_ATTR_VENDOR_ID] || | |
1541 | !info->attrs[NFC_ATTR_VENDOR_SUBCMD]) | |
1542 | return -EINVAL; | |
1543 | ||
1544 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1545 | vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]); | |
1546 | subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]); | |
1547 | ||
1548 | dev = nfc_get_device(dev_idx); | |
1549 | if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds) | |
1550 | return -ENODEV; | |
1551 | ||
fe202fe9 CR |
1552 | if (info->attrs[NFC_ATTR_VENDOR_DATA]) { |
1553 | data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]); | |
9e58095f SO |
1554 | data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]); |
1555 | if (data_len == 0) | |
1556 | return -EINVAL; | |
1557 | } else { | |
adca3c38 | 1558 | data = NULL; |
9e58095f SO |
1559 | data_len = 0; |
1560 | } | |
1561 | ||
1562 | for (i = 0; i < dev->n_vendor_cmds; i++) { | |
1563 | cmd = &dev->vendor_cmds[i]; | |
1564 | ||
1565 | if (cmd->vendor_id != vid || cmd->subcmd != subcmd) | |
1566 | continue; | |
1567 | ||
29e76924 CR |
1568 | dev->cur_cmd_info = info; |
1569 | err = cmd->doit(dev, data, data_len); | |
1570 | dev->cur_cmd_info = NULL; | |
1571 | return err; | |
9e58095f SO |
1572 | } |
1573 | ||
1574 | return -EOPNOTSUPP; | |
1575 | } | |
1576 | ||
29e76924 CR |
1577 | /* message building helper */ |
1578 | static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq, | |
1579 | int flags, u8 cmd) | |
1580 | { | |
1581 | /* since there is no private header just add the generic one */ | |
1582 | return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd); | |
1583 | } | |
1584 | ||
1585 | static struct sk_buff * | |
1586 | __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen, | |
1587 | u32 portid, u32 seq, | |
1588 | enum nfc_attrs attr, | |
1589 | u32 oui, u32 subcmd, gfp_t gfp) | |
1590 | { | |
1591 | struct sk_buff *skb; | |
1592 | void *hdr; | |
1593 | ||
1594 | skb = nlmsg_new(approxlen + 100, gfp); | |
1595 | if (!skb) | |
1596 | return NULL; | |
1597 | ||
1598 | hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR); | |
1599 | if (!hdr) { | |
1600 | kfree_skb(skb); | |
1601 | return NULL; | |
1602 | } | |
1603 | ||
1604 | if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
1605 | goto nla_put_failure; | |
1606 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui)) | |
1607 | goto nla_put_failure; | |
1608 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd)) | |
1609 | goto nla_put_failure; | |
1610 | ||
1611 | ((void **)skb->cb)[0] = dev; | |
1612 | ((void **)skb->cb)[1] = hdr; | |
1613 | ||
1614 | return skb; | |
1615 | ||
1616 | nla_put_failure: | |
1617 | kfree_skb(skb); | |
1618 | return NULL; | |
1619 | } | |
1620 | ||
1621 | struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev, | |
1622 | enum nfc_attrs attr, | |
1623 | u32 oui, u32 subcmd, | |
1624 | int approxlen) | |
1625 | { | |
1626 | if (WARN_ON(!dev->cur_cmd_info)) | |
1627 | return NULL; | |
1628 | ||
1629 | return __nfc_alloc_vendor_cmd_skb(dev, approxlen, | |
1630 | dev->cur_cmd_info->snd_portid, | |
1631 | dev->cur_cmd_info->snd_seq, attr, | |
1632 | oui, subcmd, GFP_KERNEL); | |
1633 | } | |
1634 | EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb); | |
1635 | ||
1636 | int nfc_vendor_cmd_reply(struct sk_buff *skb) | |
1637 | { | |
1638 | struct nfc_dev *dev = ((void **)skb->cb)[0]; | |
1639 | void *hdr = ((void **)skb->cb)[1]; | |
1640 | ||
1641 | /* clear CB data for netlink core to own from now on */ | |
1642 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1643 | ||
1644 | if (WARN_ON(!dev->cur_cmd_info)) { | |
1645 | kfree_skb(skb); | |
1646 | return -EINVAL; | |
1647 | } | |
1648 | ||
1649 | genlmsg_end(skb, hdr); | |
1650 | return genlmsg_reply(skb, dev->cur_cmd_info); | |
1651 | } | |
1652 | EXPORT_SYMBOL(nfc_vendor_cmd_reply); | |
1653 | ||
4534de83 | 1654 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1655 | { |
1656 | .cmd = NFC_CMD_GET_DEVICE, | |
ef6243ac | 1657 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
4d12b8b1 LRV |
1658 | .doit = nfc_genl_get_device, |
1659 | .dumpit = nfc_genl_dump_devices, | |
1660 | .done = nfc_genl_dump_devices_done, | |
8b3fe7b5 IE |
1661 | }, |
1662 | { | |
1663 | .cmd = NFC_CMD_DEV_UP, | |
ef6243ac | 1664 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
8b3fe7b5 | 1665 | .doit = nfc_genl_dev_up, |
8b3fe7b5 IE |
1666 | }, |
1667 | { | |
1668 | .cmd = NFC_CMD_DEV_DOWN, | |
ef6243ac | 1669 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
8b3fe7b5 | 1670 | .doit = nfc_genl_dev_down, |
4d12b8b1 LRV |
1671 | }, |
1672 | { | |
1673 | .cmd = NFC_CMD_START_POLL, | |
ef6243ac | 1674 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
4d12b8b1 | 1675 | .doit = nfc_genl_start_poll, |
4d12b8b1 LRV |
1676 | }, |
1677 | { | |
1678 | .cmd = NFC_CMD_STOP_POLL, | |
ef6243ac | 1679 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
4d12b8b1 | 1680 | .doit = nfc_genl_stop_poll, |
4d12b8b1 | 1681 | }, |
1ed28f61 SO |
1682 | { |
1683 | .cmd = NFC_CMD_DEP_LINK_UP, | |
ef6243ac | 1684 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1ed28f61 | 1685 | .doit = nfc_genl_dep_link_up, |
1ed28f61 SO |
1686 | }, |
1687 | { | |
1688 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
ef6243ac | 1689 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1ed28f61 | 1690 | .doit = nfc_genl_dep_link_down, |
1ed28f61 | 1691 | }, |
4d12b8b1 LRV |
1692 | { |
1693 | .cmd = NFC_CMD_GET_TARGET, | |
4495af31 JP |
1694 | .validate = GENL_DONT_VALIDATE_STRICT | |
1695 | GENL_DONT_VALIDATE_DUMP_STRICT, | |
4d12b8b1 LRV |
1696 | .dumpit = nfc_genl_dump_targets, |
1697 | .done = nfc_genl_dump_targets_done, | |
4d12b8b1 | 1698 | }, |
52feb444 TE |
1699 | { |
1700 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
ef6243ac | 1701 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
52feb444 | 1702 | .doit = nfc_genl_llc_get_params, |
52feb444 TE |
1703 | }, |
1704 | { | |
1705 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
ef6243ac | 1706 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
52feb444 | 1707 | .doit = nfc_genl_llc_set_params, |
52feb444 | 1708 | }, |
d9b8d8e1 TE |
1709 | { |
1710 | .cmd = NFC_CMD_LLC_SDREQ, | |
ef6243ac | 1711 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d9b8d8e1 | 1712 | .doit = nfc_genl_llc_sdreq, |
d9b8d8e1 | 1713 | }, |
9674da87 | 1714 | { |
9ea7187c | 1715 | .cmd = NFC_CMD_FW_DOWNLOAD, |
ef6243ac | 1716 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
9ea7187c | 1717 | .doit = nfc_genl_fw_download, |
9674da87 | 1718 | }, |
be085653 SO |
1719 | { |
1720 | .cmd = NFC_CMD_ENABLE_SE, | |
ef6243ac | 1721 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
be085653 | 1722 | .doit = nfc_genl_enable_se, |
be085653 SO |
1723 | }, |
1724 | { | |
1725 | .cmd = NFC_CMD_DISABLE_SE, | |
ef6243ac | 1726 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
be085653 | 1727 | .doit = nfc_genl_disable_se, |
be085653 | 1728 | }, |
ac22ac46 SO |
1729 | { |
1730 | .cmd = NFC_CMD_GET_SE, | |
ef6243ac | 1731 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
ac22ac46 SO |
1732 | .dumpit = nfc_genl_dump_ses, |
1733 | .done = nfc_genl_dump_ses_done, | |
ac22ac46 | 1734 | }, |
5ce3f32b SO |
1735 | { |
1736 | .cmd = NFC_CMD_SE_IO, | |
ef6243ac | 1737 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
5ce3f32b | 1738 | .doit = nfc_genl_se_io, |
5ce3f32b | 1739 | }, |
3682f49f CR |
1740 | { |
1741 | .cmd = NFC_CMD_ACTIVATE_TARGET, | |
ef6243ac | 1742 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
3682f49f | 1743 | .doit = nfc_genl_activate_target, |
3682f49f | 1744 | }, |
9e58095f SO |
1745 | { |
1746 | .cmd = NFC_CMD_VENDOR, | |
ef6243ac | 1747 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
9e58095f | 1748 | .doit = nfc_genl_vendor_cmd, |
9e58095f | 1749 | }, |
4d63adfe MG |
1750 | { |
1751 | .cmd = NFC_CMD_DEACTIVATE_TARGET, | |
ef6243ac | 1752 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
4d63adfe | 1753 | .doit = nfc_genl_deactivate_target, |
4d63adfe | 1754 | }, |
4d12b8b1 LRV |
1755 | }; |
1756 | ||
56989f6d | 1757 | static struct genl_family nfc_genl_family __ro_after_init = { |
489111e5 JB |
1758 | .hdrsize = 0, |
1759 | .name = NFC_GENL_NAME, | |
1760 | .version = NFC_GENL_VERSION, | |
1761 | .maxattr = NFC_ATTR_MAX, | |
3b0f31f2 | 1762 | .policy = nfc_genl_policy, |
489111e5 JB |
1763 | .module = THIS_MODULE, |
1764 | .ops = nfc_genl_ops, | |
1765 | .n_ops = ARRAY_SIZE(nfc_genl_ops), | |
1766 | .mcgrps = nfc_genl_mcgrps, | |
1767 | .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps), | |
1768 | }; | |
1769 | ||
3c0cc8aa SJ |
1770 | |
1771 | struct urelease_work { | |
1772 | struct work_struct w; | |
65bc4f93 | 1773 | u32 portid; |
3c0cc8aa SJ |
1774 | }; |
1775 | ||
1776 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1777 | { |
3c0cc8aa | 1778 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1779 | struct class_dev_iter iter; |
1780 | struct nfc_dev *dev; | |
1781 | ||
c487606f | 1782 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1783 | |
3c0cc8aa | 1784 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1785 | |
1786 | nfc_device_iter_init(&iter); | |
1787 | dev = nfc_device_iter_next(&iter); | |
1788 | ||
1789 | while (dev) { | |
3c0cc8aa SJ |
1790 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1791 | ||
c487606f | 1792 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1793 | nfc_stop_poll(dev); |
15e47304 | 1794 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1795 | } |
3c0cc8aa SJ |
1796 | |
1797 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1798 | ||
4d12b8b1 LRV |
1799 | dev = nfc_device_iter_next(&iter); |
1800 | } | |
1801 | ||
1802 | nfc_device_iter_exit(&iter); | |
1803 | ||
3c0cc8aa SJ |
1804 | mutex_unlock(&nfc_devlist_mutex); |
1805 | ||
1806 | kfree(w); | |
1807 | } | |
1808 | ||
1809 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1810 | unsigned long event, void *ptr) | |
1811 | { | |
1812 | struct netlink_notify *n = ptr; | |
1813 | struct urelease_work *w; | |
1814 | ||
1815 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1816 | goto out; | |
1817 | ||
c487606f | 1818 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1819 | |
1820 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1821 | if (w) { | |
1822 | INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); | |
c487606f | 1823 | w->portid = n->portid; |
3c0cc8aa SJ |
1824 | schedule_work((struct work_struct *) w); |
1825 | } | |
1826 | ||
4d12b8b1 LRV |
1827 | out: |
1828 | return NOTIFY_DONE; | |
1829 | } | |
1830 | ||
1831 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1832 | { | |
15e47304 | 1833 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1834 | mutex_init(&genl_data->genl_data_mutex); |
1835 | } | |
1836 | ||
1837 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1838 | { | |
1839 | mutex_destroy(&genl_data->genl_data_mutex); | |
1840 | } | |
1841 | ||
1842 | static struct notifier_block nl_notifier = { | |
1843 | .notifier_call = nfc_genl_rcv_nl_event, | |
1844 | }; | |
1845 | ||
1846 | /** | |
1847 | * nfc_genl_init() - Initialize netlink interface | |
1848 | * | |
1849 | * This initialization function registers the nfc netlink family. | |
1850 | */ | |
1851 | int __init nfc_genl_init(void) | |
1852 | { | |
1853 | int rc; | |
1854 | ||
489111e5 | 1855 | rc = genl_register_family(&nfc_genl_family); |
4d12b8b1 LRV |
1856 | if (rc) |
1857 | return rc; | |
1858 | ||
4d12b8b1 LRV |
1859 | netlink_register_notifier(&nl_notifier); |
1860 | ||
2a94fe48 | 1861 | return 0; |
4d12b8b1 LRV |
1862 | } |
1863 | ||
1864 | /** | |
1865 | * nfc_genl_exit() - Deinitialize netlink interface | |
1866 | * | |
1867 | * This exit function unregisters the nfc netlink family. | |
1868 | */ | |
1869 | void nfc_genl_exit(void) | |
1870 | { | |
1871 | netlink_unregister_notifier(&nl_notifier); | |
1872 | genl_unregister_family(&nfc_genl_family); | |
1873 | } |