Commit | Line | Data |
---|---|---|
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 | ||
7288dd2f | 113 | if (!info->info.attrs[NFC_ATTR_DEVICE_INDEX]) |
4d12b8b1 LRV |
114 | return ERR_PTR(-EINVAL); |
115 | ||
7288dd2f | 116 | idx = nla_get_u32(info->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 | { | |
f2479c0a | 533 | const struct nfc_se *se; |
9afec6d3 CR |
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 | ||
fd79a0cb TS |
639 | if (iter) { |
640 | nfc_device_iter_exit(iter); | |
641 | kfree(iter); | |
642 | } | |
4d12b8b1 LRV |
643 | |
644 | return 0; | |
645 | } | |
646 | ||
1ed28f61 | 647 | int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
0a40acb2 | 648 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
649 | { |
650 | struct sk_buff *msg; | |
651 | void *hdr; | |
652 | ||
653 | pr_debug("DEP link is up\n"); | |
654 | ||
58050fce | 655 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
656 | if (!msg) |
657 | return -ENOMEM; | |
658 | ||
0a40acb2 | 659 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
1ed28f61 SO |
660 | if (!hdr) |
661 | goto free_msg; | |
662 | ||
1e6428d8 DM |
663 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
664 | goto nla_put_failure; | |
665 | if (rf_mode == NFC_RF_INITIATOR && | |
666 | nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) | |
667 | goto nla_put_failure; | |
668 | if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || | |
669 | nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) | |
670 | goto nla_put_failure; | |
1ed28f61 SO |
671 | |
672 | genlmsg_end(msg, hdr); | |
673 | ||
674 | dev->dep_link_up = true; | |
675 | ||
2a94fe48 | 676 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
677 | |
678 | return 0; | |
679 | ||
680 | nla_put_failure: | |
1ed28f61 SO |
681 | free_msg: |
682 | nlmsg_free(msg); | |
683 | return -EMSGSIZE; | |
684 | } | |
685 | ||
686 | int nfc_genl_dep_link_down_event(struct nfc_dev *dev) | |
687 | { | |
688 | struct sk_buff *msg; | |
689 | void *hdr; | |
690 | ||
691 | pr_debug("DEP link is down\n"); | |
692 | ||
58050fce | 693 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f61 SO |
694 | if (!msg) |
695 | return -ENOMEM; | |
696 | ||
697 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
0a40acb2 | 698 | NFC_CMD_DEP_LINK_DOWN); |
1ed28f61 SO |
699 | if (!hdr) |
700 | goto free_msg; | |
701 | ||
1e6428d8 DM |
702 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
703 | goto nla_put_failure; | |
1ed28f61 SO |
704 | |
705 | genlmsg_end(msg, hdr); | |
706 | ||
2a94fe48 | 707 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f61 SO |
708 | |
709 | return 0; | |
710 | ||
711 | nla_put_failure: | |
1ed28f61 SO |
712 | free_msg: |
713 | nlmsg_free(msg); | |
714 | return -EMSGSIZE; | |
715 | } | |
716 | ||
4d12b8b1 LRV |
717 | static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) |
718 | { | |
719 | struct sk_buff *msg; | |
720 | struct nfc_dev *dev; | |
721 | u32 idx; | |
722 | int rc = -ENOBUFS; | |
723 | ||
4d12b8b1 LRV |
724 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
725 | return -EINVAL; | |
726 | ||
727 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
728 | ||
729 | dev = nfc_get_device(idx); | |
730 | if (!dev) | |
731 | return -ENODEV; | |
732 | ||
58050fce | 733 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b1 LRV |
734 | if (!msg) { |
735 | rc = -ENOMEM; | |
736 | goto out_putdev; | |
737 | } | |
738 | ||
15e47304 | 739 | rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb2 | 740 | NULL, 0); |
4d12b8b1 LRV |
741 | if (rc < 0) |
742 | goto out_free; | |
743 | ||
744 | nfc_put_device(dev); | |
745 | ||
746 | return genlmsg_reply(msg, info); | |
747 | ||
748 | out_free: | |
749 | nlmsg_free(msg); | |
750 | out_putdev: | |
751 | nfc_put_device(dev); | |
752 | return rc; | |
753 | } | |
754 | ||
8b3fe7b5 IE |
755 | static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) |
756 | { | |
757 | struct nfc_dev *dev; | |
758 | int rc; | |
759 | u32 idx; | |
760 | ||
8b3fe7b5 IE |
761 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
762 | return -EINVAL; | |
763 | ||
764 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
765 | ||
766 | dev = nfc_get_device(idx); | |
767 | if (!dev) | |
768 | return -ENODEV; | |
769 | ||
770 | rc = nfc_dev_up(dev); | |
771 | ||
772 | nfc_put_device(dev); | |
773 | return rc; | |
774 | } | |
775 | ||
776 | static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) | |
777 | { | |
778 | struct nfc_dev *dev; | |
779 | int rc; | |
780 | u32 idx; | |
781 | ||
8b3fe7b5 IE |
782 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
783 | return -EINVAL; | |
784 | ||
785 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
786 | ||
787 | dev = nfc_get_device(idx); | |
788 | if (!dev) | |
789 | return -ENODEV; | |
790 | ||
791 | rc = nfc_dev_down(dev); | |
792 | ||
793 | nfc_put_device(dev); | |
794 | return rc; | |
795 | } | |
796 | ||
4d12b8b1 LRV |
797 | static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) |
798 | { | |
799 | struct nfc_dev *dev; | |
800 | int rc; | |
801 | u32 idx; | |
fe7c5800 | 802 | u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b1 | 803 | |
1ed28f61 SO |
804 | pr_debug("Poll start\n"); |
805 | ||
4d12b8b1 | 806 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c5800 SO |
807 | ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && |
808 | !info->attrs[NFC_ATTR_PROTOCOLS]) && | |
0f450772 | 809 | !info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b1 LRV |
810 | return -EINVAL; |
811 | ||
812 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
fe7c5800 SO |
813 | |
814 | if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) | |
815 | tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); | |
fe7c5800 SO |
816 | |
817 | if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) | |
818 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); | |
5e50ee3a SO |
819 | else if (info->attrs[NFC_ATTR_PROTOCOLS]) |
820 | im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
4d12b8b1 LRV |
821 | |
822 | dev = nfc_get_device(idx); | |
823 | if (!dev) | |
824 | return -ENODEV; | |
825 | ||
826 | mutex_lock(&dev->genl_data.genl_data_mutex); | |
827 | ||
fe7c5800 | 828 | rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b1 | 829 | if (!rc) |
15e47304 | 830 | dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b1 LRV |
831 | |
832 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
833 | ||
834 | nfc_put_device(dev); | |
835 | return rc; | |
836 | } | |
837 | ||
838 | static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) | |
839 | { | |
840 | struct nfc_dev *dev; | |
841 | int rc; | |
842 | u32 idx; | |
843 | ||
4d12b8b1 LRV |
844 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
845 | return -EINVAL; | |
846 | ||
847 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
848 | ||
849 | dev = nfc_get_device(idx); | |
850 | if (!dev) | |
851 | return -ENODEV; | |
852 | ||
a831b913 SO |
853 | device_lock(&dev->dev); |
854 | ||
855 | if (!dev->polling) { | |
856 | device_unlock(&dev->dev); | |
d8f923c3 | 857 | nfc_put_device(dev); |
a831b913 SO |
858 | return -EINVAL; |
859 | } | |
860 | ||
861 | device_unlock(&dev->dev); | |
862 | ||
4d12b8b1 LRV |
863 | mutex_lock(&dev->genl_data.genl_data_mutex); |
864 | ||
15e47304 | 865 | if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b1 LRV |
866 | rc = -EBUSY; |
867 | goto out; | |
868 | } | |
869 | ||
870 | rc = nfc_stop_poll(dev); | |
15e47304 | 871 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 LRV |
872 | |
873 | out: | |
874 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
875 | nfc_put_device(dev); | |
876 | return rc; | |
877 | } | |
878 | ||
3682f49f CR |
879 | static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info) |
880 | { | |
881 | struct nfc_dev *dev; | |
882 | u32 device_idx, target_idx, protocol; | |
883 | int rc; | |
884 | ||
a0323b97 MJ |
885 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
886 | !info->attrs[NFC_ATTR_TARGET_INDEX] || | |
887 | !info->attrs[NFC_ATTR_PROTOCOLS]) | |
3682f49f CR |
888 | return -EINVAL; |
889 | ||
890 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
891 | ||
892 | dev = nfc_get_device(device_idx); | |
893 | if (!dev) | |
894 | return -ENODEV; | |
895 | ||
896 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
897 | protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); | |
898 | ||
96d4581f | 899 | nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); |
3682f49f CR |
900 | rc = nfc_activate_target(dev, target_idx, protocol); |
901 | ||
902 | nfc_put_device(dev); | |
3267183c | 903 | return rc; |
3682f49f CR |
904 | } |
905 | ||
4d63adfe MG |
906 | static int nfc_genl_deactivate_target(struct sk_buff *skb, |
907 | struct genl_info *info) | |
908 | { | |
909 | struct nfc_dev *dev; | |
910 | u32 device_idx, target_idx; | |
911 | int rc; | |
912 | ||
385097a3 YX |
913 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
914 | !info->attrs[NFC_ATTR_TARGET_INDEX]) | |
4d63adfe MG |
915 | return -EINVAL; |
916 | ||
917 | device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
918 | ||
919 | dev = nfc_get_device(device_idx); | |
920 | if (!dev) | |
921 | return -ENODEV; | |
922 | ||
923 | target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
924 | ||
925 | rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); | |
926 | ||
927 | nfc_put_device(dev); | |
928 | return rc; | |
929 | } | |
930 | ||
1ed28f61 SO |
931 | static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) |
932 | { | |
933 | struct nfc_dev *dev; | |
934 | int rc, tgt_idx; | |
935 | u32 idx; | |
47807d3d | 936 | u8 comm; |
1ed28f61 SO |
937 | |
938 | pr_debug("DEP link up\n"); | |
939 | ||
940 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
47807d3d | 941 | !info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f61 SO |
942 | return -EINVAL; |
943 | ||
944 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
945 | if (!info->attrs[NFC_ATTR_TARGET_INDEX]) | |
946 | tgt_idx = NFC_TARGET_IDX_ANY; | |
947 | else | |
948 | tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); | |
949 | ||
950 | comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); | |
1ed28f61 SO |
951 | |
952 | if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) | |
953 | return -EINVAL; | |
954 | ||
1ed28f61 SO |
955 | dev = nfc_get_device(idx); |
956 | if (!dev) | |
957 | return -ENODEV; | |
958 | ||
47807d3d | 959 | rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f61 SO |
960 | |
961 | nfc_put_device(dev); | |
962 | ||
963 | return rc; | |
964 | } | |
965 | ||
966 | static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) | |
967 | { | |
968 | struct nfc_dev *dev; | |
969 | int rc; | |
970 | u32 idx; | |
971 | ||
a799de0e | 972 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
1ed28f61 SO |
973 | return -EINVAL; |
974 | ||
975 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
976 | ||
977 | dev = nfc_get_device(idx); | |
978 | if (!dev) | |
979 | return -ENODEV; | |
980 | ||
981 | rc = nfc_dep_link_down(dev); | |
982 | ||
983 | nfc_put_device(dev); | |
984 | return rc; | |
985 | } | |
986 | ||
52feb444 TE |
987 | static int nfc_genl_send_params(struct sk_buff *msg, |
988 | struct nfc_llcp_local *local, | |
989 | u32 portid, u32 seq) | |
990 | { | |
991 | void *hdr; | |
992 | ||
993 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, | |
994 | NFC_CMD_LLC_GET_PARAMS); | |
995 | if (!hdr) | |
996 | return -EMSGSIZE; | |
997 | ||
998 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || | |
999 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || | |
1000 | nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || | |
1001 | nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) | |
1002 | goto nla_put_failure; | |
1003 | ||
053c095a JB |
1004 | genlmsg_end(msg, hdr); |
1005 | return 0; | |
52feb444 TE |
1006 | |
1007 | nla_put_failure: | |
52feb444 TE |
1008 | genlmsg_cancel(msg, hdr); |
1009 | return -EMSGSIZE; | |
1010 | } | |
1011 | ||
1012 | static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) | |
1013 | { | |
1014 | struct nfc_dev *dev; | |
1015 | struct nfc_llcp_local *local; | |
1016 | int rc = 0; | |
1017 | struct sk_buff *msg = NULL; | |
1018 | u32 idx; | |
1019 | ||
a799de0e | 1020 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) |
52feb444 TE |
1021 | return -EINVAL; |
1022 | ||
1023 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1024 | ||
1025 | dev = nfc_get_device(idx); | |
1026 | if (!dev) | |
1027 | return -ENODEV; | |
1028 | ||
1029 | device_lock(&dev->dev); | |
1030 | ||
1031 | local = nfc_llcp_find_local(dev); | |
1032 | if (!local) { | |
1033 | rc = -ENODEV; | |
1034 | goto exit; | |
1035 | } | |
1036 | ||
1037 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1038 | if (!msg) { | |
1039 | rc = -ENOMEM; | |
6709d4b7 | 1040 | goto put_local; |
52feb444 TE |
1041 | } |
1042 | ||
1043 | rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); | |
1044 | ||
6709d4b7 LM |
1045 | put_local: |
1046 | nfc_llcp_local_put(local); | |
1047 | ||
52feb444 TE |
1048 | exit: |
1049 | device_unlock(&dev->dev); | |
1050 | ||
1051 | nfc_put_device(dev); | |
1052 | ||
1053 | if (rc < 0) { | |
1054 | if (msg) | |
1055 | nlmsg_free(msg); | |
1056 | ||
1057 | return rc; | |
1058 | } | |
1059 | ||
1060 | return genlmsg_reply(msg, info); | |
1061 | } | |
1062 | ||
1063 | static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) | |
1064 | { | |
1065 | struct nfc_dev *dev; | |
1066 | struct nfc_llcp_local *local; | |
1067 | u8 rw = 0; | |
1068 | u16 miux = 0; | |
1069 | u32 idx; | |
1070 | int rc = 0; | |
1071 | ||
1072 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1073 | (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && | |
1074 | !info->attrs[NFC_ATTR_LLC_PARAM_RW] && | |
1075 | !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) | |
1076 | return -EINVAL; | |
1077 | ||
1078 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { | |
1079 | rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); | |
1080 | ||
1081 | if (rw > LLCP_MAX_RW) | |
1082 | return -EINVAL; | |
1083 | } | |
1084 | ||
1085 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { | |
1086 | miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); | |
1087 | ||
1088 | if (miux > LLCP_MAX_MIUX) | |
1089 | return -EINVAL; | |
1090 | } | |
1091 | ||
1092 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1093 | ||
1094 | dev = nfc_get_device(idx); | |
1095 | if (!dev) | |
1096 | return -ENODEV; | |
1097 | ||
1098 | device_lock(&dev->dev); | |
1099 | ||
1100 | local = nfc_llcp_find_local(dev); | |
1101 | if (!local) { | |
52feb444 TE |
1102 | rc = -ENODEV; |
1103 | goto exit; | |
1104 | } | |
1105 | ||
1106 | if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { | |
1107 | if (dev->dep_link_up) { | |
1108 | rc = -EINPROGRESS; | |
6709d4b7 | 1109 | goto put_local; |
52feb444 TE |
1110 | } |
1111 | ||
1112 | local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); | |
1113 | } | |
1114 | ||
1115 | if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) | |
1116 | local->rw = rw; | |
1117 | ||
1118 | if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) | |
1119 | local->miux = cpu_to_be16(miux); | |
1120 | ||
6709d4b7 LM |
1121 | put_local: |
1122 | nfc_llcp_local_put(local); | |
1123 | ||
52feb444 TE |
1124 | exit: |
1125 | device_unlock(&dev->dev); | |
1126 | ||
1127 | nfc_put_device(dev); | |
1128 | ||
1129 | return rc; | |
1130 | } | |
1131 | ||
d9b8d8e1 TE |
1132 | static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) |
1133 | { | |
1134 | struct nfc_dev *dev; | |
1135 | struct nfc_llcp_local *local; | |
1136 | struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; | |
1137 | u32 idx; | |
1138 | u8 tid; | |
1139 | char *uri; | |
1140 | int rc = 0, rem; | |
1141 | size_t uri_len, tlvs_len; | |
1142 | struct hlist_head sdreq_list; | |
1143 | struct nfc_llcp_sdp_tlv *sdreq; | |
1144 | ||
1145 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1146 | !info->attrs[NFC_ATTR_LLC_SDP]) | |
1147 | return -EINVAL; | |
1148 | ||
1149 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1150 | ||
1151 | dev = nfc_get_device(idx); | |
9abebb8a JL |
1152 | if (!dev) |
1153 | return -ENODEV; | |
d9b8d8e1 TE |
1154 | |
1155 | device_lock(&dev->dev); | |
1156 | ||
1157 | if (dev->dep_link_up == false) { | |
1158 | rc = -ENOLINK; | |
1159 | goto exit; | |
1160 | } | |
1161 | ||
1162 | local = nfc_llcp_find_local(dev); | |
1163 | if (!local) { | |
d9b8d8e1 TE |
1164 | rc = -ENODEV; |
1165 | goto exit; | |
1166 | } | |
1167 | ||
1168 | INIT_HLIST_HEAD(&sdreq_list); | |
1169 | ||
1170 | tlvs_len = 0; | |
1171 | ||
1172 | nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { | |
8cb08174 JB |
1173 | rc = nla_parse_nested_deprecated(sdp_attrs, NFC_SDP_ATTR_MAX, |
1174 | attr, nfc_sdp_genl_policy, | |
1175 | info->extack); | |
d9b8d8e1 TE |
1176 | |
1177 | if (rc != 0) { | |
1178 | rc = -EINVAL; | |
6709d4b7 | 1179 | goto put_local; |
d9b8d8e1 TE |
1180 | } |
1181 | ||
1182 | if (!sdp_attrs[NFC_SDP_ATTR_URI]) | |
1183 | continue; | |
1184 | ||
1185 | uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1186 | if (uri_len == 0) | |
1187 | continue; | |
1188 | ||
1189 | uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); | |
1190 | if (uri == NULL || *uri == 0) | |
1191 | continue; | |
1192 | ||
1193 | tid = local->sdreq_next_tid++; | |
1194 | ||
1195 | sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); | |
1196 | if (sdreq == NULL) { | |
1197 | rc = -ENOMEM; | |
6709d4b7 | 1198 | goto put_local; |
d9b8d8e1 TE |
1199 | } |
1200 | ||
1201 | tlvs_len += sdreq->tlv_len; | |
1202 | ||
1203 | hlist_add_head(&sdreq->node, &sdreq_list); | |
1204 | } | |
1205 | ||
1206 | if (hlist_empty(&sdreq_list)) { | |
1207 | rc = -EINVAL; | |
6709d4b7 | 1208 | goto put_local; |
d9b8d8e1 TE |
1209 | } |
1210 | ||
1211 | rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); | |
6709d4b7 LM |
1212 | |
1213 | put_local: | |
1214 | nfc_llcp_local_put(local); | |
1215 | ||
d9b8d8e1 TE |
1216 | exit: |
1217 | device_unlock(&dev->dev); | |
1218 | ||
1219 | nfc_put_device(dev); | |
1220 | ||
1221 | return rc; | |
1222 | } | |
1223 | ||
9ea7187c | 1224 | static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da87 EL |
1225 | { |
1226 | struct nfc_dev *dev; | |
1227 | int rc; | |
1228 | u32 idx; | |
1229 | char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; | |
1230 | ||
280e3ebd | 1231 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_FIRMWARE_NAME]) |
9674da87 EL |
1232 | return -EINVAL; |
1233 | ||
1234 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1235 | ||
1236 | dev = nfc_get_device(idx); | |
1237 | if (!dev) | |
1238 | return -ENODEV; | |
1239 | ||
872f6903 | 1240 | nla_strscpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], |
9674da87 EL |
1241 | sizeof(firmware_name)); |
1242 | ||
9ea7187c | 1243 | rc = nfc_fw_download(dev, firmware_name); |
9674da87 EL |
1244 | |
1245 | nfc_put_device(dev); | |
1246 | return rc; | |
1247 | } | |
1248 | ||
352a5f5f EL |
1249 | int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, |
1250 | u32 result) | |
9674da87 EL |
1251 | { |
1252 | struct sk_buff *msg; | |
1253 | void *hdr; | |
1254 | ||
4071bf12 | 1255 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
9674da87 EL |
1256 | if (!msg) |
1257 | return -ENOMEM; | |
1258 | ||
1259 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
9ea7187c | 1260 | NFC_CMD_FW_DOWNLOAD); |
9674da87 EL |
1261 | if (!hdr) |
1262 | goto free_msg; | |
1263 | ||
1264 | if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || | |
352a5f5f | 1265 | nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da87 EL |
1266 | nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) |
1267 | goto nla_put_failure; | |
1268 | ||
1269 | genlmsg_end(msg, hdr); | |
1270 | ||
4071bf12 | 1271 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
9674da87 EL |
1272 | |
1273 | return 0; | |
1274 | ||
1275 | nla_put_failure: | |
9674da87 EL |
1276 | free_msg: |
1277 | nlmsg_free(msg); | |
1278 | return -EMSGSIZE; | |
1279 | } | |
1280 | ||
be085653 SO |
1281 | static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) |
1282 | { | |
1283 | struct nfc_dev *dev; | |
1284 | int rc; | |
1285 | u32 idx, se_idx; | |
1286 | ||
1287 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1288 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1289 | return -EINVAL; | |
1290 | ||
1291 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1292 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1293 | ||
1294 | dev = nfc_get_device(idx); | |
1295 | if (!dev) | |
1296 | return -ENODEV; | |
1297 | ||
1298 | rc = nfc_enable_se(dev, se_idx); | |
1299 | ||
1300 | nfc_put_device(dev); | |
1301 | return rc; | |
1302 | } | |
1303 | ||
1304 | static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) | |
1305 | { | |
1306 | struct nfc_dev *dev; | |
1307 | int rc; | |
1308 | u32 idx, se_idx; | |
1309 | ||
1310 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1311 | !info->attrs[NFC_ATTR_SE_INDEX]) | |
1312 | return -EINVAL; | |
1313 | ||
1314 | idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1315 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1316 | ||
1317 | dev = nfc_get_device(idx); | |
1318 | if (!dev) | |
1319 | return -ENODEV; | |
1320 | ||
1321 | rc = nfc_disable_se(dev, se_idx); | |
1322 | ||
1323 | nfc_put_device(dev); | |
1324 | return rc; | |
1325 | } | |
1326 | ||
ac22ac46 SO |
1327 | static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, |
1328 | u32 portid, u32 seq, | |
1329 | struct netlink_callback *cb, | |
1330 | int flags) | |
1331 | { | |
1332 | void *hdr; | |
1333 | struct nfc_se *se, *n; | |
1334 | ||
1335 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
1336 | hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, | |
1337 | NFC_CMD_GET_SE); | |
1338 | if (!hdr) | |
1339 | goto nla_put_failure; | |
1340 | ||
1341 | if (cb) | |
0a833c29 | 1342 | genl_dump_check_consistent(cb, hdr); |
ac22ac46 SO |
1343 | |
1344 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || | |
1345 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || | |
1346 | nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) | |
1347 | goto nla_put_failure; | |
1348 | ||
053c095a | 1349 | genlmsg_end(msg, hdr); |
ac22ac46 SO |
1350 | } |
1351 | ||
1352 | return 0; | |
1353 | ||
1354 | nla_put_failure: | |
1355 | genlmsg_cancel(msg, hdr); | |
1356 | return -EMSGSIZE; | |
1357 | } | |
1358 | ||
1359 | static int nfc_genl_dump_ses(struct sk_buff *skb, | |
1360 | struct netlink_callback *cb) | |
1361 | { | |
1362 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1363 | struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; | |
1364 | bool first_call = false; | |
1365 | ||
1366 | if (!iter) { | |
1367 | first_call = true; | |
1368 | iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL); | |
1369 | if (!iter) | |
1370 | return -ENOMEM; | |
1371 | cb->args[0] = (long) iter; | |
1372 | } | |
1373 | ||
1374 | mutex_lock(&nfc_devlist_mutex); | |
1375 | ||
1376 | cb->seq = nfc_devlist_generation; | |
1377 | ||
1378 | if (first_call) { | |
1379 | nfc_device_iter_init(iter); | |
1380 | dev = nfc_device_iter_next(iter); | |
1381 | } | |
1382 | ||
1383 | while (dev) { | |
1384 | int rc; | |
1385 | ||
1386 | rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, | |
1387 | cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); | |
1388 | if (rc < 0) | |
1389 | break; | |
1390 | ||
1391 | dev = nfc_device_iter_next(iter); | |
1392 | } | |
1393 | ||
1394 | mutex_unlock(&nfc_devlist_mutex); | |
1395 | ||
1396 | cb->args[1] = (long) dev; | |
1397 | ||
1398 | return skb->len; | |
1399 | } | |
1400 | ||
1401 | static int nfc_genl_dump_ses_done(struct netlink_callback *cb) | |
1402 | { | |
1403 | struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; | |
1404 | ||
4cd8371a KK |
1405 | if (iter) { |
1406 | nfc_device_iter_exit(iter); | |
1407 | kfree(iter); | |
1408 | } | |
ac22ac46 SO |
1409 | |
1410 | return 0; | |
1411 | } | |
1412 | ||
cd96db6f CR |
1413 | static int nfc_se_io(struct nfc_dev *dev, u32 se_idx, |
1414 | u8 *apdu, size_t apdu_length, | |
1415 | se_io_cb_t cb, void *cb_context) | |
1416 | { | |
1417 | struct nfc_se *se; | |
1418 | int rc; | |
1419 | ||
1420 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
1421 | ||
1422 | device_lock(&dev->dev); | |
1423 | ||
1424 | if (!device_is_registered(&dev->dev)) { | |
1425 | rc = -ENODEV; | |
1426 | goto error; | |
1427 | } | |
1428 | ||
1429 | if (!dev->dev_up) { | |
1430 | rc = -ENODEV; | |
1431 | goto error; | |
1432 | } | |
1433 | ||
1434 | if (!dev->ops->se_io) { | |
1435 | rc = -EOPNOTSUPP; | |
1436 | goto error; | |
1437 | } | |
1438 | ||
1439 | se = nfc_find_se(dev, se_idx); | |
1440 | if (!se) { | |
1441 | rc = -EINVAL; | |
1442 | goto error; | |
1443 | } | |
1444 | ||
1445 | if (se->state != NFC_SE_ENABLED) { | |
1446 | rc = -ENODEV; | |
1447 | goto error; | |
1448 | } | |
1449 | ||
1450 | rc = dev->ops->se_io(dev, se_idx, apdu, | |
1451 | apdu_length, cb, cb_context); | |
1452 | ||
25ff6f8a FP |
1453 | device_unlock(&dev->dev); |
1454 | return rc; | |
1455 | ||
cd96db6f CR |
1456 | error: |
1457 | device_unlock(&dev->dev); | |
7d834b4d | 1458 | kfree(cb_context); |
cd96db6f CR |
1459 | return rc; |
1460 | } | |
1461 | ||
5ce3f32b SO |
1462 | struct se_io_ctx { |
1463 | u32 dev_idx; | |
1464 | u32 se_idx; | |
1465 | }; | |
1466 | ||
ddc1a70b | 1467 | static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b SO |
1468 | { |
1469 | struct se_io_ctx *ctx = context; | |
1470 | struct sk_buff *msg; | |
1471 | void *hdr; | |
1472 | ||
1473 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1474 | if (!msg) { | |
1475 | kfree(ctx); | |
1476 | return; | |
1477 | } | |
1478 | ||
1479 | hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, | |
1480 | NFC_CMD_SE_IO); | |
1481 | if (!hdr) | |
1482 | goto free_msg; | |
1483 | ||
1484 | if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || | |
1485 | nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || | |
1486 | nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) | |
1487 | goto nla_put_failure; | |
1488 | ||
1489 | genlmsg_end(msg, hdr); | |
1490 | ||
2a94fe48 | 1491 | genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b SO |
1492 | |
1493 | kfree(ctx); | |
1494 | ||
1495 | return; | |
1496 | ||
1497 | nla_put_failure: | |
5ce3f32b SO |
1498 | free_msg: |
1499 | nlmsg_free(msg); | |
1500 | kfree(ctx); | |
1501 | ||
1502 | return; | |
1503 | } | |
1504 | ||
1505 | static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) | |
1506 | { | |
1507 | struct nfc_dev *dev; | |
1508 | struct se_io_ctx *ctx; | |
1509 | u32 dev_idx, se_idx; | |
1510 | u8 *apdu; | |
1511 | size_t apdu_len; | |
df49908f | 1512 | int rc; |
5ce3f32b SO |
1513 | |
1514 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1515 | !info->attrs[NFC_ATTR_SE_INDEX] || | |
1516 | !info->attrs[NFC_ATTR_SE_APDU]) | |
1517 | return -EINVAL; | |
1518 | ||
1519 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1520 | se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); | |
1521 | ||
1522 | dev = nfc_get_device(dev_idx); | |
1523 | if (!dev) | |
1524 | return -ENODEV; | |
1525 | ||
df49908f ML |
1526 | if (!dev->ops || !dev->ops->se_io) { |
1527 | rc = -EOPNOTSUPP; | |
1528 | goto put_dev; | |
1529 | } | |
5ce3f32b SO |
1530 | |
1531 | apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); | |
df49908f ML |
1532 | if (apdu_len == 0) { |
1533 | rc = -EINVAL; | |
1534 | goto put_dev; | |
1535 | } | |
5ce3f32b SO |
1536 | |
1537 | apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); | |
df49908f ML |
1538 | if (!apdu) { |
1539 | rc = -EINVAL; | |
1540 | goto put_dev; | |
1541 | } | |
5ce3f32b SO |
1542 | |
1543 | ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL); | |
df49908f ML |
1544 | if (!ctx) { |
1545 | rc = -ENOMEM; | |
1546 | goto put_dev; | |
1547 | } | |
5ce3f32b SO |
1548 | |
1549 | ctx->dev_idx = dev_idx; | |
1550 | ctx->se_idx = se_idx; | |
1551 | ||
df49908f ML |
1552 | rc = nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); |
1553 | ||
1554 | put_dev: | |
1555 | nfc_put_device(dev); | |
1556 | return rc; | |
5ce3f32b SO |
1557 | } |
1558 | ||
9e58095f SO |
1559 | static int nfc_genl_vendor_cmd(struct sk_buff *skb, |
1560 | struct genl_info *info) | |
1561 | { | |
1562 | struct nfc_dev *dev; | |
15944ad2 | 1563 | const struct nfc_vendor_cmd *cmd; |
9e58095f SO |
1564 | u32 dev_idx, vid, subcmd; |
1565 | u8 *data; | |
1566 | size_t data_len; | |
29e76924 | 1567 | int i, err; |
9e58095f SO |
1568 | |
1569 | if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || | |
1570 | !info->attrs[NFC_ATTR_VENDOR_ID] || | |
1571 | !info->attrs[NFC_ATTR_VENDOR_SUBCMD]) | |
1572 | return -EINVAL; | |
1573 | ||
1574 | dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); | |
1575 | vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]); | |
1576 | subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]); | |
1577 | ||
1578 | dev = nfc_get_device(dev_idx); | |
df49908f | 1579 | if (!dev) |
9e58095f SO |
1580 | return -ENODEV; |
1581 | ||
df49908f ML |
1582 | if (!dev->vendor_cmds || !dev->n_vendor_cmds) { |
1583 | err = -ENODEV; | |
1584 | goto put_dev; | |
1585 | } | |
1586 | ||
fe202fe9 CR |
1587 | if (info->attrs[NFC_ATTR_VENDOR_DATA]) { |
1588 | data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]); | |
9e58095f | 1589 | data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]); |
df49908f ML |
1590 | if (data_len == 0) { |
1591 | err = -EINVAL; | |
1592 | goto put_dev; | |
1593 | } | |
9e58095f | 1594 | } else { |
adca3c38 | 1595 | data = NULL; |
9e58095f SO |
1596 | data_len = 0; |
1597 | } | |
1598 | ||
1599 | for (i = 0; i < dev->n_vendor_cmds; i++) { | |
1600 | cmd = &dev->vendor_cmds[i]; | |
1601 | ||
1602 | if (cmd->vendor_id != vid || cmd->subcmd != subcmd) | |
1603 | continue; | |
1604 | ||
29e76924 CR |
1605 | dev->cur_cmd_info = info; |
1606 | err = cmd->doit(dev, data, data_len); | |
1607 | dev->cur_cmd_info = NULL; | |
df49908f | 1608 | goto put_dev; |
9e58095f SO |
1609 | } |
1610 | ||
df49908f ML |
1611 | err = -EOPNOTSUPP; |
1612 | ||
1613 | put_dev: | |
1614 | nfc_put_device(dev); | |
1615 | return err; | |
9e58095f SO |
1616 | } |
1617 | ||
29e76924 CR |
1618 | /* message building helper */ |
1619 | static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq, | |
1620 | int flags, u8 cmd) | |
1621 | { | |
1622 | /* since there is no private header just add the generic one */ | |
1623 | return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd); | |
1624 | } | |
1625 | ||
1626 | static struct sk_buff * | |
1627 | __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen, | |
1628 | u32 portid, u32 seq, | |
1629 | enum nfc_attrs attr, | |
1630 | u32 oui, u32 subcmd, gfp_t gfp) | |
1631 | { | |
1632 | struct sk_buff *skb; | |
1633 | void *hdr; | |
1634 | ||
1635 | skb = nlmsg_new(approxlen + 100, gfp); | |
1636 | if (!skb) | |
1637 | return NULL; | |
1638 | ||
1639 | hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR); | |
1640 | if (!hdr) { | |
1641 | kfree_skb(skb); | |
1642 | return NULL; | |
1643 | } | |
1644 | ||
1645 | if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx)) | |
1646 | goto nla_put_failure; | |
1647 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui)) | |
1648 | goto nla_put_failure; | |
1649 | if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd)) | |
1650 | goto nla_put_failure; | |
1651 | ||
1652 | ((void **)skb->cb)[0] = dev; | |
1653 | ((void **)skb->cb)[1] = hdr; | |
1654 | ||
1655 | return skb; | |
1656 | ||
1657 | nla_put_failure: | |
1658 | kfree_skb(skb); | |
1659 | return NULL; | |
1660 | } | |
1661 | ||
1662 | struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev, | |
1663 | enum nfc_attrs attr, | |
1664 | u32 oui, u32 subcmd, | |
1665 | int approxlen) | |
1666 | { | |
1667 | if (WARN_ON(!dev->cur_cmd_info)) | |
1668 | return NULL; | |
1669 | ||
1670 | return __nfc_alloc_vendor_cmd_skb(dev, approxlen, | |
1671 | dev->cur_cmd_info->snd_portid, | |
1672 | dev->cur_cmd_info->snd_seq, attr, | |
1673 | oui, subcmd, GFP_KERNEL); | |
1674 | } | |
1675 | EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb); | |
1676 | ||
1677 | int nfc_vendor_cmd_reply(struct sk_buff *skb) | |
1678 | { | |
1679 | struct nfc_dev *dev = ((void **)skb->cb)[0]; | |
1680 | void *hdr = ((void **)skb->cb)[1]; | |
1681 | ||
1682 | /* clear CB data for netlink core to own from now on */ | |
1683 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1684 | ||
1685 | if (WARN_ON(!dev->cur_cmd_info)) { | |
1686 | kfree_skb(skb); | |
1687 | return -EINVAL; | |
1688 | } | |
1689 | ||
1690 | genlmsg_end(skb, hdr); | |
1691 | return genlmsg_reply(skb, dev->cur_cmd_info); | |
1692 | } | |
1693 | EXPORT_SYMBOL(nfc_vendor_cmd_reply); | |
1694 | ||
4534de83 | 1695 | static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b1 LRV |
1696 | { |
1697 | .cmd = NFC_CMD_GET_DEVICE, | |
ef6243ac | 1698 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
4d12b8b1 LRV |
1699 | .doit = nfc_genl_get_device, |
1700 | .dumpit = nfc_genl_dump_devices, | |
1701 | .done = nfc_genl_dump_devices_done, | |
8b3fe7b5 IE |
1702 | }, |
1703 | { | |
1704 | .cmd = NFC_CMD_DEV_UP, | |
ef6243ac | 1705 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
8b3fe7b5 | 1706 | .doit = nfc_genl_dev_up, |
aedddb4e | 1707 | .flags = GENL_ADMIN_PERM, |
8b3fe7b5 IE |
1708 | }, |
1709 | { | |
1710 | .cmd = NFC_CMD_DEV_DOWN, | |
ef6243ac | 1711 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
8b3fe7b5 | 1712 | .doit = nfc_genl_dev_down, |
aedddb4e | 1713 | .flags = GENL_ADMIN_PERM, |
4d12b8b1 LRV |
1714 | }, |
1715 | { | |
1716 | .cmd = NFC_CMD_START_POLL, | |
ef6243ac | 1717 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
4d12b8b1 | 1718 | .doit = nfc_genl_start_poll, |
aedddb4e | 1719 | .flags = GENL_ADMIN_PERM, |
4d12b8b1 LRV |
1720 | }, |
1721 | { | |
1722 | .cmd = NFC_CMD_STOP_POLL, | |
ef6243ac | 1723 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
4d12b8b1 | 1724 | .doit = nfc_genl_stop_poll, |
aedddb4e | 1725 | .flags = GENL_ADMIN_PERM, |
4d12b8b1 | 1726 | }, |
1ed28f61 SO |
1727 | { |
1728 | .cmd = NFC_CMD_DEP_LINK_UP, | |
ef6243ac | 1729 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1ed28f61 | 1730 | .doit = nfc_genl_dep_link_up, |
aedddb4e | 1731 | .flags = GENL_ADMIN_PERM, |
1ed28f61 SO |
1732 | }, |
1733 | { | |
1734 | .cmd = NFC_CMD_DEP_LINK_DOWN, | |
ef6243ac | 1735 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1ed28f61 | 1736 | .doit = nfc_genl_dep_link_down, |
aedddb4e | 1737 | .flags = GENL_ADMIN_PERM, |
1ed28f61 | 1738 | }, |
4d12b8b1 LRV |
1739 | { |
1740 | .cmd = NFC_CMD_GET_TARGET, | |
4495af31 JP |
1741 | .validate = GENL_DONT_VALIDATE_STRICT | |
1742 | GENL_DONT_VALIDATE_DUMP_STRICT, | |
4d12b8b1 LRV |
1743 | .dumpit = nfc_genl_dump_targets, |
1744 | .done = nfc_genl_dump_targets_done, | |
4d12b8b1 | 1745 | }, |
52feb444 TE |
1746 | { |
1747 | .cmd = NFC_CMD_LLC_GET_PARAMS, | |
ef6243ac | 1748 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
52feb444 | 1749 | .doit = nfc_genl_llc_get_params, |
52feb444 TE |
1750 | }, |
1751 | { | |
1752 | .cmd = NFC_CMD_LLC_SET_PARAMS, | |
ef6243ac | 1753 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
52feb444 | 1754 | .doit = nfc_genl_llc_set_params, |
aedddb4e | 1755 | .flags = GENL_ADMIN_PERM, |
52feb444 | 1756 | }, |
d9b8d8e1 TE |
1757 | { |
1758 | .cmd = NFC_CMD_LLC_SDREQ, | |
ef6243ac | 1759 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d9b8d8e1 | 1760 | .doit = nfc_genl_llc_sdreq, |
aedddb4e | 1761 | .flags = GENL_ADMIN_PERM, |
d9b8d8e1 | 1762 | }, |
9674da87 | 1763 | { |
9ea7187c | 1764 | .cmd = NFC_CMD_FW_DOWNLOAD, |
ef6243ac | 1765 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
9ea7187c | 1766 | .doit = nfc_genl_fw_download, |
aedddb4e | 1767 | .flags = GENL_ADMIN_PERM, |
9674da87 | 1768 | }, |
be085653 SO |
1769 | { |
1770 | .cmd = NFC_CMD_ENABLE_SE, | |
ef6243ac | 1771 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
be085653 | 1772 | .doit = nfc_genl_enable_se, |
aedddb4e | 1773 | .flags = GENL_ADMIN_PERM, |
be085653 SO |
1774 | }, |
1775 | { | |
1776 | .cmd = NFC_CMD_DISABLE_SE, | |
ef6243ac | 1777 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
be085653 | 1778 | .doit = nfc_genl_disable_se, |
aedddb4e | 1779 | .flags = GENL_ADMIN_PERM, |
be085653 | 1780 | }, |
ac22ac46 SO |
1781 | { |
1782 | .cmd = NFC_CMD_GET_SE, | |
ef6243ac | 1783 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
ac22ac46 SO |
1784 | .dumpit = nfc_genl_dump_ses, |
1785 | .done = nfc_genl_dump_ses_done, | |
ac22ac46 | 1786 | }, |
5ce3f32b SO |
1787 | { |
1788 | .cmd = NFC_CMD_SE_IO, | |
ef6243ac | 1789 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
5ce3f32b | 1790 | .doit = nfc_genl_se_io, |
aedddb4e | 1791 | .flags = GENL_ADMIN_PERM, |
5ce3f32b | 1792 | }, |
3682f49f CR |
1793 | { |
1794 | .cmd = NFC_CMD_ACTIVATE_TARGET, | |
ef6243ac | 1795 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
3682f49f | 1796 | .doit = nfc_genl_activate_target, |
aedddb4e | 1797 | .flags = GENL_ADMIN_PERM, |
3682f49f | 1798 | }, |
9e58095f SO |
1799 | { |
1800 | .cmd = NFC_CMD_VENDOR, | |
ef6243ac | 1801 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
9e58095f | 1802 | .doit = nfc_genl_vendor_cmd, |
aedddb4e | 1803 | .flags = GENL_ADMIN_PERM, |
9e58095f | 1804 | }, |
4d63adfe MG |
1805 | { |
1806 | .cmd = NFC_CMD_DEACTIVATE_TARGET, | |
ef6243ac | 1807 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
4d63adfe | 1808 | .doit = nfc_genl_deactivate_target, |
aedddb4e | 1809 | .flags = GENL_ADMIN_PERM, |
4d63adfe | 1810 | }, |
4d12b8b1 LRV |
1811 | }; |
1812 | ||
56989f6d | 1813 | static struct genl_family nfc_genl_family __ro_after_init = { |
489111e5 JB |
1814 | .hdrsize = 0, |
1815 | .name = NFC_GENL_NAME, | |
1816 | .version = NFC_GENL_VERSION, | |
1817 | .maxattr = NFC_ATTR_MAX, | |
3b0f31f2 | 1818 | .policy = nfc_genl_policy, |
489111e5 JB |
1819 | .module = THIS_MODULE, |
1820 | .ops = nfc_genl_ops, | |
1821 | .n_ops = ARRAY_SIZE(nfc_genl_ops), | |
9c5d03d3 | 1822 | .resv_start_op = NFC_CMD_DEACTIVATE_TARGET + 1, |
489111e5 JB |
1823 | .mcgrps = nfc_genl_mcgrps, |
1824 | .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps), | |
1825 | }; | |
1826 | ||
3c0cc8aa SJ |
1827 | |
1828 | struct urelease_work { | |
1829 | struct work_struct w; | |
65bc4f93 | 1830 | u32 portid; |
3c0cc8aa SJ |
1831 | }; |
1832 | ||
1833 | static void nfc_urelease_event_work(struct work_struct *work) | |
4d12b8b1 | 1834 | { |
3c0cc8aa | 1835 | struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b1 LRV |
1836 | struct class_dev_iter iter; |
1837 | struct nfc_dev *dev; | |
1838 | ||
c487606f | 1839 | pr_debug("portid %d\n", w->portid); |
4d12b8b1 | 1840 | |
3c0cc8aa | 1841 | mutex_lock(&nfc_devlist_mutex); |
4d12b8b1 LRV |
1842 | |
1843 | nfc_device_iter_init(&iter); | |
1844 | dev = nfc_device_iter_next(&iter); | |
1845 | ||
1846 | while (dev) { | |
3c0cc8aa SJ |
1847 | mutex_lock(&dev->genl_data.genl_data_mutex); |
1848 | ||
c487606f | 1849 | if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b1 | 1850 | nfc_stop_poll(dev); |
15e47304 | 1851 | dev->genl_data.poll_req_portid = 0; |
4d12b8b1 | 1852 | } |
3c0cc8aa SJ |
1853 | |
1854 | mutex_unlock(&dev->genl_data.genl_data_mutex); | |
1855 | ||
4d12b8b1 LRV |
1856 | dev = nfc_device_iter_next(&iter); |
1857 | } | |
1858 | ||
1859 | nfc_device_iter_exit(&iter); | |
1860 | ||
3c0cc8aa SJ |
1861 | mutex_unlock(&nfc_devlist_mutex); |
1862 | ||
1863 | kfree(w); | |
1864 | } | |
1865 | ||
1866 | static int nfc_genl_rcv_nl_event(struct notifier_block *this, | |
1867 | unsigned long event, void *ptr) | |
1868 | { | |
1869 | struct netlink_notify *n = ptr; | |
1870 | struct urelease_work *w; | |
1871 | ||
1872 | if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) | |
1873 | goto out; | |
1874 | ||
c487606f | 1875 | pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); |
3c0cc8aa SJ |
1876 | |
1877 | w = kmalloc(sizeof(*w), GFP_ATOMIC); | |
1878 | if (w) { | |
32d91b4a | 1879 | INIT_WORK(&w->w, nfc_urelease_event_work); |
c487606f | 1880 | w->portid = n->portid; |
32d91b4a | 1881 | schedule_work(&w->w); |
3c0cc8aa SJ |
1882 | } |
1883 | ||
4d12b8b1 LRV |
1884 | out: |
1885 | return NOTIFY_DONE; | |
1886 | } | |
1887 | ||
1888 | void nfc_genl_data_init(struct nfc_genl_data *genl_data) | |
1889 | { | |
15e47304 | 1890 | genl_data->poll_req_portid = 0; |
4d12b8b1 LRV |
1891 | mutex_init(&genl_data->genl_data_mutex); |
1892 | } | |
1893 | ||
1894 | void nfc_genl_data_exit(struct nfc_genl_data *genl_data) | |
1895 | { | |
1896 | mutex_destroy(&genl_data->genl_data_mutex); | |
1897 | } | |
1898 | ||
1899 | static struct notifier_block nl_notifier = { | |
1900 | .notifier_call = nfc_genl_rcv_nl_event, | |
1901 | }; | |
1902 | ||
1903 | /** | |
1904 | * nfc_genl_init() - Initialize netlink interface | |
1905 | * | |
1906 | * This initialization function registers the nfc netlink family. | |
1907 | */ | |
1908 | int __init nfc_genl_init(void) | |
1909 | { | |
1910 | int rc; | |
1911 | ||
489111e5 | 1912 | rc = genl_register_family(&nfc_genl_family); |
4d12b8b1 LRV |
1913 | if (rc) |
1914 | return rc; | |
1915 | ||
4d12b8b1 LRV |
1916 | netlink_register_notifier(&nl_notifier); |
1917 | ||
2a94fe48 | 1918 | return 0; |
4d12b8b1 LRV |
1919 | } |
1920 | ||
1921 | /** | |
1922 | * nfc_genl_exit() - Deinitialize netlink interface | |
1923 | * | |
1924 | * This exit function unregisters the nfc netlink family. | |
1925 | */ | |
1926 | void nfc_genl_exit(void) | |
1927 | { | |
1928 | netlink_unregister_notifier(&nl_notifier); | |
1929 | genl_unregister_family(&nfc_genl_family); | |
1930 | } |