Commit | Line | Data |
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d646960f SO |
1 | /* |
2 | * Copyright (C) 2011 Intel Corporation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the | |
16 | * Free Software Foundation, Inc., | |
17 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | */ | |
19 | ||
20 | #define pr_fmt(fmt) "llcp: %s: " fmt, __func__ | |
21 | ||
22 | #include <linux/init.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/nfc.h> | |
26 | ||
27 | #include "../nfc.h" | |
28 | #include "llcp.h" | |
29 | ||
30 | static u8 llcp_magic[3] = {0x46, 0x66, 0x6d}; | |
31 | ||
32 | static struct list_head llcp_devices; | |
33 | ||
a69f32af | 34 | void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *sk) |
d646960f | 35 | { |
a69f32af SO |
36 | write_lock(&l->lock); |
37 | sk_add_node(sk, &l->head); | |
38 | write_unlock(&l->lock); | |
39 | } | |
d646960f | 40 | |
a69f32af SO |
41 | void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *sk) |
42 | { | |
43 | write_lock(&l->lock); | |
44 | sk_del_node_init(sk); | |
45 | write_unlock(&l->lock); | |
46 | } | |
d646960f | 47 | |
4d22ea15 | 48 | static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen) |
a69f32af SO |
49 | { |
50 | struct sock *sk; | |
51 | struct hlist_node *node, *tmp; | |
52 | struct nfc_llcp_sock *llcp_sock; | |
d646960f | 53 | |
a69f32af | 54 | write_lock(&local->sockets.lock); |
40c75f81 | 55 | |
a69f32af SO |
56 | sk_for_each_safe(sk, node, tmp, &local->sockets.head) { |
57 | llcp_sock = nfc_llcp_sock(sk); | |
d646960f | 58 | |
a69f32af | 59 | lock_sock(sk); |
d646960f | 60 | |
a69f32af SO |
61 | if (sk->sk_state == LLCP_CONNECTED) |
62 | nfc_put_device(llcp_sock->dev); | |
d646960f | 63 | |
a69f32af | 64 | if (sk->sk_state == LLCP_LISTEN) { |
d646960f SO |
65 | struct nfc_llcp_sock *lsk, *n; |
66 | struct sock *accept_sk; | |
67 | ||
a69f32af | 68 | list_for_each_entry_safe(lsk, n, &llcp_sock->accept_queue, |
427a2eb1 | 69 | accept_queue) { |
d646960f SO |
70 | accept_sk = &lsk->sk; |
71 | lock_sock(accept_sk); | |
72 | ||
73 | nfc_llcp_accept_unlink(accept_sk); | |
74 | ||
75 | accept_sk->sk_state = LLCP_CLOSED; | |
d646960f SO |
76 | |
77 | release_sock(accept_sk); | |
78 | ||
79 | sock_orphan(accept_sk); | |
80 | } | |
4d22ea15 SO |
81 | |
82 | if (listen == true) { | |
83 | release_sock(sk); | |
84 | continue; | |
85 | } | |
d646960f SO |
86 | } |
87 | ||
a69f32af | 88 | sk->sk_state = LLCP_CLOSED; |
d646960f | 89 | |
a69f32af | 90 | release_sock(sk); |
d646960f | 91 | |
a69f32af | 92 | sock_orphan(sk); |
40c75f81 | 93 | |
a69f32af | 94 | sk_del_node_init(sk); |
d646960f SO |
95 | } |
96 | ||
a69f32af | 97 | write_unlock(&local->sockets.lock); |
d646960f SO |
98 | } |
99 | ||
c7aa1225 SO |
100 | struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local) |
101 | { | |
102 | kref_get(&local->ref); | |
103 | ||
104 | return local; | |
105 | } | |
106 | ||
107 | static void local_release(struct kref *ref) | |
108 | { | |
109 | struct nfc_llcp_local *local; | |
110 | ||
111 | local = container_of(ref, struct nfc_llcp_local, ref); | |
112 | ||
113 | list_del(&local->list); | |
4d22ea15 | 114 | nfc_llcp_socket_release(local, false); |
c7aa1225 SO |
115 | del_timer_sync(&local->link_timer); |
116 | skb_queue_purge(&local->tx_queue); | |
117 | destroy_workqueue(local->tx_wq); | |
118 | destroy_workqueue(local->rx_wq); | |
07922bb1 | 119 | destroy_workqueue(local->timeout_wq); |
c7aa1225 SO |
120 | kfree_skb(local->rx_pending); |
121 | kfree(local); | |
122 | } | |
123 | ||
124 | int nfc_llcp_local_put(struct nfc_llcp_local *local) | |
125 | { | |
a69f32af SO |
126 | WARN_ON(local == NULL); |
127 | ||
128 | if (local == NULL) | |
129 | return 0; | |
130 | ||
c7aa1225 SO |
131 | return kref_put(&local->ref, local_release); |
132 | } | |
133 | ||
d646960f SO |
134 | static void nfc_llcp_timeout_work(struct work_struct *work) |
135 | { | |
136 | struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local, | |
427a2eb1 | 137 | timeout_work); |
d646960f SO |
138 | |
139 | nfc_dep_link_down(local->dev); | |
140 | } | |
141 | ||
142 | static void nfc_llcp_symm_timer(unsigned long data) | |
143 | { | |
144 | struct nfc_llcp_local *local = (struct nfc_llcp_local *) data; | |
145 | ||
146 | pr_err("SYMM timeout\n"); | |
147 | ||
148 | queue_work(local->timeout_wq, &local->timeout_work); | |
149 | } | |
150 | ||
151 | struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev) | |
152 | { | |
153 | struct nfc_llcp_local *local, *n; | |
154 | ||
155 | list_for_each_entry_safe(local, n, &llcp_devices, list) | |
156 | if (local->dev == dev) | |
157 | return local; | |
158 | ||
159 | pr_debug("No device found\n"); | |
160 | ||
161 | return NULL; | |
162 | } | |
163 | ||
164 | static char *wks[] = { | |
165 | NULL, | |
166 | NULL, /* SDP */ | |
167 | "urn:nfc:sn:ip", | |
168 | "urn:nfc:sn:obex", | |
169 | "urn:nfc:sn:snep", | |
170 | }; | |
171 | ||
172 | static int nfc_llcp_wks_sap(char *service_name, size_t service_name_len) | |
173 | { | |
174 | int sap, num_wks; | |
175 | ||
176 | pr_debug("%s\n", service_name); | |
177 | ||
178 | if (service_name == NULL) | |
179 | return -EINVAL; | |
180 | ||
181 | num_wks = ARRAY_SIZE(wks); | |
182 | ||
427a2eb1 | 183 | for (sap = 0; sap < num_wks; sap++) { |
d646960f SO |
184 | if (wks[sap] == NULL) |
185 | continue; | |
186 | ||
187 | if (strncmp(wks[sap], service_name, service_name_len) == 0) | |
188 | return sap; | |
189 | } | |
190 | ||
191 | return -EINVAL; | |
192 | } | |
193 | ||
194 | u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local, | |
427a2eb1 | 195 | struct nfc_llcp_sock *sock) |
d646960f SO |
196 | { |
197 | mutex_lock(&local->sdp_lock); | |
198 | ||
199 | if (sock->service_name != NULL && sock->service_name_len > 0) { | |
200 | int ssap = nfc_llcp_wks_sap(sock->service_name, | |
427a2eb1 | 201 | sock->service_name_len); |
d646960f SO |
202 | |
203 | if (ssap > 0) { | |
204 | pr_debug("WKS %d\n", ssap); | |
205 | ||
206 | /* This is a WKS, let's check if it's free */ | |
207 | if (local->local_wks & BIT(ssap)) { | |
208 | mutex_unlock(&local->sdp_lock); | |
209 | ||
210 | return LLCP_SAP_MAX; | |
211 | } | |
212 | ||
1762c17c | 213 | set_bit(ssap, &local->local_wks); |
d646960f SO |
214 | mutex_unlock(&local->sdp_lock); |
215 | ||
216 | return ssap; | |
217 | } | |
218 | ||
219 | /* | |
220 | * This is not a well known service, | |
221 | * we should try to find a local SDP free spot | |
222 | */ | |
223 | ssap = find_first_zero_bit(&local->local_sdp, LLCP_SDP_NUM_SAP); | |
224 | if (ssap == LLCP_SDP_NUM_SAP) { | |
225 | mutex_unlock(&local->sdp_lock); | |
226 | ||
227 | return LLCP_SAP_MAX; | |
228 | } | |
229 | ||
230 | pr_debug("SDP ssap %d\n", LLCP_WKS_NUM_SAP + ssap); | |
231 | ||
1762c17c | 232 | set_bit(ssap, &local->local_sdp); |
d646960f SO |
233 | mutex_unlock(&local->sdp_lock); |
234 | ||
235 | return LLCP_WKS_NUM_SAP + ssap; | |
236 | ||
237 | } else if (sock->ssap != 0) { | |
238 | if (sock->ssap < LLCP_WKS_NUM_SAP) { | |
1762c17c SO |
239 | if (!test_bit(sock->ssap, &local->local_wks)) { |
240 | set_bit(sock->ssap, &local->local_wks); | |
d646960f SO |
241 | mutex_unlock(&local->sdp_lock); |
242 | ||
243 | return sock->ssap; | |
244 | } | |
245 | ||
246 | } else if (sock->ssap < LLCP_SDP_NUM_SAP) { | |
1762c17c SO |
247 | if (!test_bit(sock->ssap - LLCP_WKS_NUM_SAP, |
248 | &local->local_sdp)) { | |
249 | set_bit(sock->ssap - LLCP_WKS_NUM_SAP, | |
250 | &local->local_sdp); | |
d646960f SO |
251 | mutex_unlock(&local->sdp_lock); |
252 | ||
253 | return sock->ssap; | |
254 | } | |
255 | } | |
256 | } | |
257 | ||
258 | mutex_unlock(&local->sdp_lock); | |
259 | ||
260 | return LLCP_SAP_MAX; | |
261 | } | |
262 | ||
263 | u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local) | |
264 | { | |
265 | u8 local_ssap; | |
266 | ||
267 | mutex_lock(&local->sdp_lock); | |
268 | ||
269 | local_ssap = find_first_zero_bit(&local->local_sap, LLCP_LOCAL_NUM_SAP); | |
270 | if (local_ssap == LLCP_LOCAL_NUM_SAP) { | |
271 | mutex_unlock(&local->sdp_lock); | |
272 | return LLCP_SAP_MAX; | |
273 | } | |
274 | ||
1762c17c | 275 | set_bit(local_ssap, &local->local_sap); |
d646960f SO |
276 | |
277 | mutex_unlock(&local->sdp_lock); | |
278 | ||
279 | return local_ssap + LLCP_LOCAL_SAP_OFFSET; | |
280 | } | |
281 | ||
282 | void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap) | |
283 | { | |
284 | u8 local_ssap; | |
285 | unsigned long *sdp; | |
286 | ||
287 | if (ssap < LLCP_WKS_NUM_SAP) { | |
288 | local_ssap = ssap; | |
289 | sdp = &local->local_wks; | |
290 | } else if (ssap < LLCP_LOCAL_NUM_SAP) { | |
291 | local_ssap = ssap - LLCP_WKS_NUM_SAP; | |
292 | sdp = &local->local_sdp; | |
293 | } else if (ssap < LLCP_MAX_SAP) { | |
294 | local_ssap = ssap - LLCP_LOCAL_NUM_SAP; | |
295 | sdp = &local->local_sap; | |
296 | } else { | |
297 | return; | |
298 | } | |
299 | ||
300 | mutex_lock(&local->sdp_lock); | |
301 | ||
1762c17c | 302 | clear_bit(local_ssap, sdp); |
d646960f SO |
303 | |
304 | mutex_unlock(&local->sdp_lock); | |
305 | } | |
306 | ||
d646960f SO |
307 | static int nfc_llcp_build_gb(struct nfc_llcp_local *local) |
308 | { | |
309 | u8 *gb_cur, *version_tlv, version, version_length; | |
310 | u8 *lto_tlv, lto, lto_length; | |
311 | u8 *wks_tlv, wks_length; | |
56d5876a SO |
312 | u8 *miux_tlv, miux_length; |
313 | __be16 miux; | |
d646960f SO |
314 | u8 gb_len = 0; |
315 | ||
316 | version = LLCP_VERSION_11; | |
317 | version_tlv = nfc_llcp_build_tlv(LLCP_TLV_VERSION, &version, | |
427a2eb1 | 318 | 1, &version_length); |
d646960f SO |
319 | gb_len += version_length; |
320 | ||
321 | /* 1500 ms */ | |
322 | lto = 150; | |
91b0ade1 | 323 | lto_tlv = nfc_llcp_build_tlv(LLCP_TLV_LTO, <o, 1, <o_length); |
d646960f SO |
324 | gb_len += lto_length; |
325 | ||
326 | pr_debug("Local wks 0x%lx\n", local->local_wks); | |
327 | wks_tlv = nfc_llcp_build_tlv(LLCP_TLV_WKS, (u8 *)&local->local_wks, 2, | |
427a2eb1 | 328 | &wks_length); |
d646960f SO |
329 | gb_len += wks_length; |
330 | ||
56d5876a SO |
331 | miux = cpu_to_be16(LLCP_MAX_MIUX); |
332 | miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0, | |
333 | &miux_length); | |
334 | gb_len += miux_length; | |
335 | ||
d646960f SO |
336 | gb_len += ARRAY_SIZE(llcp_magic); |
337 | ||
338 | if (gb_len > NFC_MAX_GT_LEN) { | |
339 | kfree(version_tlv); | |
340 | return -EINVAL; | |
341 | } | |
342 | ||
343 | gb_cur = local->gb; | |
344 | ||
345 | memcpy(gb_cur, llcp_magic, ARRAY_SIZE(llcp_magic)); | |
346 | gb_cur += ARRAY_SIZE(llcp_magic); | |
347 | ||
348 | memcpy(gb_cur, version_tlv, version_length); | |
349 | gb_cur += version_length; | |
350 | ||
351 | memcpy(gb_cur, lto_tlv, lto_length); | |
352 | gb_cur += lto_length; | |
353 | ||
354 | memcpy(gb_cur, wks_tlv, wks_length); | |
355 | gb_cur += wks_length; | |
356 | ||
56d5876a SO |
357 | memcpy(gb_cur, miux_tlv, miux_length); |
358 | gb_cur += miux_length; | |
359 | ||
d646960f SO |
360 | kfree(version_tlv); |
361 | kfree(lto_tlv); | |
362 | ||
363 | local->gb_len = gb_len; | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
b8e7a06d SO |
368 | u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len) |
369 | { | |
370 | struct nfc_llcp_local *local; | |
371 | ||
372 | local = nfc_llcp_find_local(dev); | |
373 | if (local == NULL) { | |
374 | *general_bytes_len = 0; | |
375 | return NULL; | |
376 | } | |
377 | ||
378 | nfc_llcp_build_gb(local); | |
379 | ||
380 | *general_bytes_len = local->gb_len; | |
381 | ||
382 | return local->gb; | |
383 | } | |
384 | ||
d646960f SO |
385 | int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len) |
386 | { | |
387 | struct nfc_llcp_local *local = nfc_llcp_find_local(dev); | |
388 | ||
389 | if (local == NULL) { | |
390 | pr_err("No LLCP device\n"); | |
391 | return -ENODEV; | |
392 | } | |
393 | ||
394 | memset(local->remote_gb, 0, NFC_MAX_GT_LEN); | |
395 | memcpy(local->remote_gb, gb, gb_len); | |
396 | local->remote_gb_len = gb_len; | |
397 | ||
427a2eb1 | 398 | if (local->remote_gb == NULL || local->remote_gb_len == 0) |
d646960f SO |
399 | return -ENODEV; |
400 | ||
401 | if (memcmp(local->remote_gb, llcp_magic, 3)) { | |
402 | pr_err("MAC does not support LLCP\n"); | |
403 | return -EINVAL; | |
404 | } | |
405 | ||
7a06e586 SO |
406 | return nfc_llcp_parse_gb_tlv(local, |
407 | &local->remote_gb[3], | |
408 | local->remote_gb_len - 3); | |
d646960f SO |
409 | } |
410 | ||
d646960f SO |
411 | static u8 nfc_llcp_dsap(struct sk_buff *pdu) |
412 | { | |
413 | return (pdu->data[0] & 0xfc) >> 2; | |
414 | } | |
415 | ||
416 | static u8 nfc_llcp_ptype(struct sk_buff *pdu) | |
417 | { | |
418 | return ((pdu->data[0] & 0x03) << 2) | ((pdu->data[1] & 0xc0) >> 6); | |
419 | } | |
420 | ||
421 | static u8 nfc_llcp_ssap(struct sk_buff *pdu) | |
422 | { | |
423 | return pdu->data[1] & 0x3f; | |
424 | } | |
425 | ||
426 | static u8 nfc_llcp_ns(struct sk_buff *pdu) | |
427 | { | |
428 | return pdu->data[2] >> 4; | |
429 | } | |
430 | ||
431 | static u8 nfc_llcp_nr(struct sk_buff *pdu) | |
432 | { | |
433 | return pdu->data[2] & 0xf; | |
434 | } | |
435 | ||
436 | static void nfc_llcp_set_nrns(struct nfc_llcp_sock *sock, struct sk_buff *pdu) | |
437 | { | |
279cf174 | 438 | pdu->data[2] = (sock->send_n << 4) | (sock->recv_n); |
d646960f SO |
439 | sock->send_n = (sock->send_n + 1) % 16; |
440 | sock->recv_ack_n = (sock->recv_n - 1) % 16; | |
441 | } | |
442 | ||
84457960 SO |
443 | static void nfc_llcp_tx_work(struct work_struct *work) |
444 | { | |
445 | struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local, | |
446 | tx_work); | |
447 | struct sk_buff *skb; | |
448 | struct sock *sk; | |
449 | struct nfc_llcp_sock *llcp_sock; | |
450 | ||
451 | skb = skb_dequeue(&local->tx_queue); | |
452 | if (skb != NULL) { | |
453 | sk = skb->sk; | |
454 | llcp_sock = nfc_llcp_sock(sk); | |
455 | if (llcp_sock != NULL) { | |
456 | int ret; | |
457 | ||
458 | pr_debug("Sending pending skb\n"); | |
459 | print_hex_dump(KERN_DEBUG, "LLCP Tx: ", | |
460 | DUMP_PREFIX_OFFSET, 16, 1, | |
461 | skb->data, skb->len, true); | |
462 | ||
463 | ret = nfc_data_exchange(local->dev, local->target_idx, | |
464 | skb, nfc_llcp_recv, local); | |
465 | ||
466 | if (!ret && nfc_llcp_ptype(skb) == LLCP_PDU_I) { | |
467 | skb = skb_get(skb); | |
468 | skb_queue_tail(&llcp_sock->tx_pending_queue, | |
469 | skb); | |
470 | } | |
471 | } else { | |
472 | nfc_llcp_send_symm(local->dev); | |
473 | } | |
474 | } else { | |
475 | nfc_llcp_send_symm(local->dev); | |
476 | } | |
477 | ||
478 | mod_timer(&local->link_timer, | |
479 | jiffies + msecs_to_jiffies(2 * local->remote_lto)); | |
480 | } | |
481 | ||
a69f32af SO |
482 | static struct nfc_llcp_sock *nfc_llcp_connecting_sock_get(struct nfc_llcp_local *local, |
483 | u8 ssap) | |
484 | { | |
485 | struct sock *sk; | |
486 | struct nfc_llcp_sock *llcp_sock; | |
487 | struct hlist_node *node; | |
488 | ||
489 | read_lock(&local->connecting_sockets.lock); | |
490 | ||
491 | sk_for_each(sk, node, &local->connecting_sockets.head) { | |
492 | llcp_sock = nfc_llcp_sock(sk); | |
493 | ||
5a0f6f3b SO |
494 | if (llcp_sock->ssap == ssap) { |
495 | sock_hold(&llcp_sock->sk); | |
a69f32af | 496 | goto out; |
5a0f6f3b | 497 | } |
a69f32af SO |
498 | } |
499 | ||
500 | llcp_sock = NULL; | |
501 | ||
502 | out: | |
503 | read_unlock(&local->connecting_sockets.lock); | |
504 | ||
a69f32af SO |
505 | return llcp_sock; |
506 | } | |
507 | ||
d646960f | 508 | static struct nfc_llcp_sock *nfc_llcp_sock_get(struct nfc_llcp_local *local, |
427a2eb1 | 509 | u8 ssap, u8 dsap) |
d646960f | 510 | { |
a69f32af SO |
511 | struct sock *sk; |
512 | struct hlist_node *node; | |
513 | struct nfc_llcp_sock *llcp_sock; | |
d646960f | 514 | |
ff353d86 SO |
515 | pr_debug("ssap dsap %d %d\n", ssap, dsap); |
516 | ||
d646960f SO |
517 | if (ssap == 0 && dsap == 0) |
518 | return NULL; | |
519 | ||
a69f32af SO |
520 | read_lock(&local->sockets.lock); |
521 | ||
522 | llcp_sock = NULL; | |
d646960f | 523 | |
a69f32af SO |
524 | sk_for_each(sk, node, &local->sockets.head) { |
525 | llcp_sock = nfc_llcp_sock(sk); | |
d646960f | 526 | |
a69f32af SO |
527 | if (llcp_sock->ssap == ssap && |
528 | llcp_sock->dsap == dsap) | |
529 | break; | |
d646960f SO |
530 | } |
531 | ||
a69f32af SO |
532 | read_unlock(&local->sockets.lock); |
533 | ||
534 | if (llcp_sock == NULL) | |
535 | return NULL; | |
536 | ||
537 | sock_hold(&llcp_sock->sk); | |
538 | ||
539 | return llcp_sock; | |
540 | } | |
541 | ||
542 | static struct nfc_llcp_sock *nfc_llcp_sock_get_sn(struct nfc_llcp_local *local, | |
543 | u8 *sn, size_t sn_len) | |
544 | { | |
545 | struct sock *sk; | |
546 | struct hlist_node *node; | |
547 | struct nfc_llcp_sock *llcp_sock; | |
548 | ||
549 | pr_debug("sn %zd\n", sn_len); | |
550 | ||
551 | if (sn == NULL || sn_len == 0) | |
552 | return NULL; | |
553 | ||
554 | read_lock(&local->sockets.lock); | |
555 | ||
556 | llcp_sock = NULL; | |
557 | ||
558 | sk_for_each(sk, node, &local->sockets.head) { | |
559 | llcp_sock = nfc_llcp_sock(sk); | |
560 | ||
561 | if (llcp_sock->sk.sk_state != LLCP_LISTEN) | |
562 | continue; | |
563 | ||
564 | if (llcp_sock->service_name == NULL || | |
565 | llcp_sock->service_name_len == 0) | |
566 | continue; | |
567 | ||
568 | if (llcp_sock->service_name_len != sn_len) | |
569 | continue; | |
570 | ||
571 | if (memcmp(sn, llcp_sock->service_name, sn_len) == 0) | |
572 | break; | |
d646960f SO |
573 | } |
574 | ||
a69f32af | 575 | read_unlock(&local->sockets.lock); |
d646960f | 576 | |
a69f32af SO |
577 | if (llcp_sock == NULL) |
578 | return NULL; | |
d646960f | 579 | |
a69f32af SO |
580 | sock_hold(&llcp_sock->sk); |
581 | ||
582 | return llcp_sock; | |
d646960f SO |
583 | } |
584 | ||
585 | static void nfc_llcp_sock_put(struct nfc_llcp_sock *sock) | |
586 | { | |
587 | sock_put(&sock->sk); | |
588 | } | |
589 | ||
590 | static u8 *nfc_llcp_connect_sn(struct sk_buff *skb, size_t *sn_len) | |
591 | { | |
592 | u8 *tlv = &skb->data[2], type, length; | |
593 | size_t tlv_array_len = skb->len - LLCP_HEADER_SIZE, offset = 0; | |
594 | ||
595 | while (offset < tlv_array_len) { | |
596 | type = tlv[0]; | |
597 | length = tlv[1]; | |
598 | ||
599 | pr_debug("type 0x%x length %d\n", type, length); | |
600 | ||
601 | if (type == LLCP_TLV_SN) { | |
602 | *sn_len = length; | |
603 | return &tlv[2]; | |
604 | } | |
605 | ||
606 | offset += length + 2; | |
607 | tlv += length + 2; | |
608 | } | |
609 | ||
610 | return NULL; | |
611 | } | |
612 | ||
613 | static void nfc_llcp_recv_connect(struct nfc_llcp_local *local, | |
427a2eb1 | 614 | struct sk_buff *skb) |
d646960f SO |
615 | { |
616 | struct sock *new_sk, *parent; | |
617 | struct nfc_llcp_sock *sock, *new_sock; | |
a69f32af | 618 | u8 dsap, ssap, reason; |
d646960f SO |
619 | |
620 | dsap = nfc_llcp_dsap(skb); | |
621 | ssap = nfc_llcp_ssap(skb); | |
622 | ||
623 | pr_debug("%d %d\n", dsap, ssap); | |
624 | ||
d646960f | 625 | if (dsap != LLCP_SAP_SDP) { |
a69f32af SO |
626 | sock = nfc_llcp_sock_get(local, dsap, LLCP_SAP_SDP); |
627 | if (sock == NULL || sock->sk.sk_state != LLCP_LISTEN) { | |
d646960f SO |
628 | reason = LLCP_DM_NOBOUND; |
629 | goto fail; | |
630 | } | |
d646960f SO |
631 | } else { |
632 | u8 *sn; | |
633 | size_t sn_len; | |
634 | ||
635 | sn = nfc_llcp_connect_sn(skb, &sn_len); | |
636 | if (sn == NULL) { | |
637 | reason = LLCP_DM_NOBOUND; | |
638 | goto fail; | |
639 | } | |
640 | ||
641 | pr_debug("Service name length %zu\n", sn_len); | |
642 | ||
a69f32af SO |
643 | sock = nfc_llcp_sock_get_sn(local, sn, sn_len); |
644 | if (sock == NULL) { | |
645 | reason = LLCP_DM_NOBOUND; | |
646 | goto fail; | |
d646960f | 647 | } |
d646960f SO |
648 | } |
649 | ||
a69f32af | 650 | lock_sock(&sock->sk); |
d646960f | 651 | |
d646960f SO |
652 | parent = &sock->sk; |
653 | ||
654 | if (sk_acceptq_is_full(parent)) { | |
655 | reason = LLCP_DM_REJ; | |
656 | release_sock(&sock->sk); | |
657 | sock_put(&sock->sk); | |
658 | goto fail; | |
659 | } | |
660 | ||
427a2eb1 | 661 | new_sk = nfc_llcp_sock_alloc(NULL, parent->sk_type, GFP_ATOMIC); |
d646960f SO |
662 | if (new_sk == NULL) { |
663 | reason = LLCP_DM_REJ; | |
664 | release_sock(&sock->sk); | |
665 | sock_put(&sock->sk); | |
666 | goto fail; | |
667 | } | |
668 | ||
669 | new_sock = nfc_llcp_sock(new_sk); | |
670 | new_sock->dev = local->dev; | |
c7aa1225 | 671 | new_sock->local = nfc_llcp_local_get(local); |
93d7e490 | 672 | new_sock->miu = local->remote_miu; |
d646960f | 673 | new_sock->nfc_protocol = sock->nfc_protocol; |
a69f32af | 674 | new_sock->ssap = sock->ssap; |
d646960f | 675 | new_sock->dsap = ssap; |
025f1520 | 676 | new_sock->target_idx = local->target_idx; |
d646960f SO |
677 | new_sock->parent = parent; |
678 | ||
7a06e586 SO |
679 | nfc_llcp_parse_connection_tlv(new_sock, &skb->data[LLCP_HEADER_SIZE], |
680 | skb->len - LLCP_HEADER_SIZE); | |
681 | ||
d646960f SO |
682 | pr_debug("new sock %p sk %p\n", new_sock, &new_sock->sk); |
683 | ||
a69f32af | 684 | nfc_llcp_sock_link(&local->sockets, new_sk); |
d646960f SO |
685 | |
686 | nfc_llcp_accept_enqueue(&sock->sk, new_sk); | |
687 | ||
688 | nfc_get_device(local->dev->idx); | |
689 | ||
690 | new_sk->sk_state = LLCP_CONNECTED; | |
691 | ||
692 | /* Wake the listening processes */ | |
693 | parent->sk_data_ready(parent, 0); | |
694 | ||
695 | /* Send CC */ | |
696 | nfc_llcp_send_cc(new_sock); | |
697 | ||
698 | release_sock(&sock->sk); | |
699 | sock_put(&sock->sk); | |
700 | ||
701 | return; | |
702 | ||
703 | fail: | |
704 | /* Send DM */ | |
705 | nfc_llcp_send_dm(local, dsap, ssap, reason); | |
706 | ||
707 | return; | |
708 | ||
709 | } | |
710 | ||
d094afa1 | 711 | int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock) |
4722d2b7 | 712 | { |
d094afa1 | 713 | int nr_frames = 0; |
4722d2b7 SO |
714 | struct nfc_llcp_local *local = sock->local; |
715 | ||
716 | pr_debug("Remote ready %d tx queue len %d remote rw %d", | |
427a2eb1 | 717 | sock->remote_ready, skb_queue_len(&sock->tx_pending_queue), |
7a06e586 | 718 | sock->rw); |
4722d2b7 SO |
719 | |
720 | /* Try to queue some I frames for transmission */ | |
721 | while (sock->remote_ready && | |
7a06e586 | 722 | skb_queue_len(&sock->tx_pending_queue) < sock->rw) { |
84457960 | 723 | struct sk_buff *pdu; |
4722d2b7 SO |
724 | |
725 | pdu = skb_dequeue(&sock->tx_queue); | |
726 | if (pdu == NULL) | |
727 | break; | |
728 | ||
729 | /* Update N(S)/N(R) */ | |
730 | nfc_llcp_set_nrns(sock, pdu); | |
731 | ||
4722d2b7 | 732 | skb_queue_tail(&local->tx_queue, pdu); |
d094afa1 | 733 | nr_frames++; |
4722d2b7 | 734 | } |
d094afa1 SO |
735 | |
736 | return nr_frames; | |
4722d2b7 SO |
737 | } |
738 | ||
d646960f | 739 | static void nfc_llcp_recv_hdlc(struct nfc_llcp_local *local, |
427a2eb1 | 740 | struct sk_buff *skb) |
d646960f SO |
741 | { |
742 | struct nfc_llcp_sock *llcp_sock; | |
743 | struct sock *sk; | |
744 | u8 dsap, ssap, ptype, ns, nr; | |
745 | ||
746 | ptype = nfc_llcp_ptype(skb); | |
747 | dsap = nfc_llcp_dsap(skb); | |
748 | ssap = nfc_llcp_ssap(skb); | |
749 | ns = nfc_llcp_ns(skb); | |
750 | nr = nfc_llcp_nr(skb); | |
751 | ||
752 | pr_debug("%d %d R %d S %d\n", dsap, ssap, nr, ns); | |
753 | ||
754 | llcp_sock = nfc_llcp_sock_get(local, dsap, ssap); | |
755 | if (llcp_sock == NULL) { | |
756 | nfc_llcp_send_dm(local, dsap, ssap, LLCP_DM_NOCONN); | |
757 | return; | |
758 | } | |
759 | ||
760 | sk = &llcp_sock->sk; | |
761 | lock_sock(sk); | |
762 | if (sk->sk_state == LLCP_CLOSED) { | |
763 | release_sock(sk); | |
764 | nfc_llcp_sock_put(llcp_sock); | |
765 | } | |
766 | ||
d646960f SO |
767 | /* Pass the payload upstream */ |
768 | if (ptype == LLCP_PDU_I) { | |
769 | pr_debug("I frame, queueing on %p\n", &llcp_sock->sk); | |
770 | ||
53aef920 SO |
771 | if (ns == llcp_sock->recv_n) |
772 | llcp_sock->recv_n = (llcp_sock->recv_n + 1) % 16; | |
773 | else | |
774 | pr_err("Received out of sequence I PDU\n"); | |
775 | ||
d646960f SO |
776 | skb_pull(skb, LLCP_HEADER_SIZE + LLCP_SEQUENCE_SIZE); |
777 | if (sock_queue_rcv_skb(&llcp_sock->sk, skb)) { | |
778 | pr_err("receive queue is full\n"); | |
779 | skb_queue_head(&llcp_sock->tx_backlog_queue, skb); | |
780 | } | |
781 | } | |
782 | ||
783 | /* Remove skbs from the pending queue */ | |
784 | if (llcp_sock->send_ack_n != nr) { | |
785 | struct sk_buff *s, *tmp; | |
786 | ||
787 | llcp_sock->send_ack_n = nr; | |
788 | ||
84457960 SO |
789 | /* Remove and free all skbs until ns == nr */ |
790 | skb_queue_walk_safe(&llcp_sock->tx_pending_queue, s, tmp) { | |
791 | skb_unlink(s, &llcp_sock->tx_pending_queue); | |
792 | kfree_skb(s); | |
793 | ||
794 | if (nfc_llcp_ns(s) == nr) | |
795 | break; | |
796 | } | |
797 | ||
798 | /* Re-queue the remaining skbs for transmission */ | |
799 | skb_queue_reverse_walk_safe(&llcp_sock->tx_pending_queue, | |
800 | s, tmp) { | |
801 | skb_unlink(s, &llcp_sock->tx_pending_queue); | |
802 | skb_queue_head(&local->tx_queue, s); | |
803 | } | |
d646960f SO |
804 | } |
805 | ||
53aef920 SO |
806 | if (ptype == LLCP_PDU_RR) |
807 | llcp_sock->remote_ready = true; | |
427a2eb1 | 808 | else if (ptype == LLCP_PDU_RNR) |
53aef920 SO |
809 | llcp_sock->remote_ready = false; |
810 | ||
56af2568 | 811 | if (nfc_llcp_queue_i_frames(llcp_sock) == 0 && ptype == LLCP_PDU_I) |
d094afa1 | 812 | nfc_llcp_send_rr(llcp_sock); |
d646960f SO |
813 | |
814 | release_sock(sk); | |
815 | nfc_llcp_sock_put(llcp_sock); | |
816 | } | |
817 | ||
818 | static void nfc_llcp_recv_disc(struct nfc_llcp_local *local, | |
427a2eb1 | 819 | struct sk_buff *skb) |
d646960f SO |
820 | { |
821 | struct nfc_llcp_sock *llcp_sock; | |
822 | struct sock *sk; | |
823 | u8 dsap, ssap; | |
824 | ||
825 | dsap = nfc_llcp_dsap(skb); | |
826 | ssap = nfc_llcp_ssap(skb); | |
827 | ||
828 | llcp_sock = nfc_llcp_sock_get(local, dsap, ssap); | |
829 | if (llcp_sock == NULL) { | |
830 | nfc_llcp_send_dm(local, dsap, ssap, LLCP_DM_NOCONN); | |
831 | return; | |
832 | } | |
833 | ||
834 | sk = &llcp_sock->sk; | |
835 | lock_sock(sk); | |
836 | if (sk->sk_state == LLCP_CLOSED) { | |
837 | release_sock(sk); | |
838 | nfc_llcp_sock_put(llcp_sock); | |
839 | } | |
840 | ||
d646960f SO |
841 | if (sk->sk_state == LLCP_CONNECTED) { |
842 | nfc_put_device(local->dev); | |
843 | sk->sk_state = LLCP_CLOSED; | |
844 | sk->sk_state_change(sk); | |
845 | } | |
846 | ||
847 | nfc_llcp_send_dm(local, dsap, ssap, LLCP_DM_DISC); | |
848 | ||
849 | release_sock(sk); | |
850 | nfc_llcp_sock_put(llcp_sock); | |
851 | } | |
852 | ||
427a2eb1 | 853 | static void nfc_llcp_recv_cc(struct nfc_llcp_local *local, struct sk_buff *skb) |
d646960f SO |
854 | { |
855 | struct nfc_llcp_sock *llcp_sock; | |
ff353d86 | 856 | struct sock *sk; |
d646960f SO |
857 | u8 dsap, ssap; |
858 | ||
d646960f SO |
859 | dsap = nfc_llcp_dsap(skb); |
860 | ssap = nfc_llcp_ssap(skb); | |
861 | ||
a69f32af | 862 | llcp_sock = nfc_llcp_connecting_sock_get(local, dsap); |
d646960f SO |
863 | if (llcp_sock == NULL) { |
864 | pr_err("Invalid CC\n"); | |
865 | nfc_llcp_send_dm(local, dsap, ssap, LLCP_DM_NOCONN); | |
866 | ||
867 | return; | |
868 | } | |
869 | ||
ff353d86 | 870 | sk = &llcp_sock->sk; |
d646960f | 871 | |
a69f32af SO |
872 | /* Unlink from connecting and link to the client array */ |
873 | nfc_llcp_sock_unlink(&local->connecting_sockets, sk); | |
874 | nfc_llcp_sock_link(&local->sockets, sk); | |
875 | llcp_sock->dsap = ssap; | |
876 | ||
7a06e586 SO |
877 | nfc_llcp_parse_connection_tlv(llcp_sock, &skb->data[LLCP_HEADER_SIZE], |
878 | skb->len - LLCP_HEADER_SIZE); | |
d646960f | 879 | |
ff353d86 SO |
880 | sk->sk_state = LLCP_CONNECTED; |
881 | sk->sk_state_change(sk); | |
882 | ||
d646960f SO |
883 | nfc_llcp_sock_put(llcp_sock); |
884 | } | |
885 | ||
886 | static void nfc_llcp_rx_work(struct work_struct *work) | |
887 | { | |
888 | struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local, | |
427a2eb1 | 889 | rx_work); |
d646960f SO |
890 | u8 dsap, ssap, ptype; |
891 | struct sk_buff *skb; | |
892 | ||
893 | skb = local->rx_pending; | |
894 | if (skb == NULL) { | |
895 | pr_debug("No pending SKB\n"); | |
896 | return; | |
897 | } | |
898 | ||
899 | ptype = nfc_llcp_ptype(skb); | |
900 | dsap = nfc_llcp_dsap(skb); | |
901 | ssap = nfc_llcp_ssap(skb); | |
902 | ||
903 | pr_debug("ptype 0x%x dsap 0x%x ssap 0x%x\n", ptype, dsap, ssap); | |
904 | ||
4be646ec SO |
905 | if (ptype != LLCP_PDU_SYMM) |
906 | print_hex_dump(KERN_DEBUG, "LLCP Rx: ", DUMP_PREFIX_OFFSET, | |
907 | 16, 1, skb->data, skb->len, true); | |
908 | ||
d646960f SO |
909 | switch (ptype) { |
910 | case LLCP_PDU_SYMM: | |
911 | pr_debug("SYMM\n"); | |
912 | break; | |
913 | ||
914 | case LLCP_PDU_CONNECT: | |
915 | pr_debug("CONNECT\n"); | |
916 | nfc_llcp_recv_connect(local, skb); | |
917 | break; | |
918 | ||
919 | case LLCP_PDU_DISC: | |
920 | pr_debug("DISC\n"); | |
921 | nfc_llcp_recv_disc(local, skb); | |
922 | break; | |
923 | ||
924 | case LLCP_PDU_CC: | |
925 | pr_debug("CC\n"); | |
926 | nfc_llcp_recv_cc(local, skb); | |
927 | break; | |
928 | ||
929 | case LLCP_PDU_I: | |
930 | case LLCP_PDU_RR: | |
53aef920 | 931 | case LLCP_PDU_RNR: |
d646960f SO |
932 | pr_debug("I frame\n"); |
933 | nfc_llcp_recv_hdlc(local, skb); | |
934 | break; | |
935 | ||
936 | } | |
937 | ||
938 | queue_work(local->tx_wq, &local->tx_work); | |
939 | kfree_skb(local->rx_pending); | |
940 | local->rx_pending = NULL; | |
941 | ||
942 | return; | |
943 | } | |
944 | ||
945 | void nfc_llcp_recv(void *data, struct sk_buff *skb, int err) | |
946 | { | |
947 | struct nfc_llcp_local *local = (struct nfc_llcp_local *) data; | |
948 | ||
949 | pr_debug("Received an LLCP PDU\n"); | |
950 | if (err < 0) { | |
427a2eb1 | 951 | pr_err("err %d\n", err); |
d646960f SO |
952 | return; |
953 | } | |
954 | ||
955 | local->rx_pending = skb_get(skb); | |
956 | del_timer(&local->link_timer); | |
957 | queue_work(local->rx_wq, &local->rx_work); | |
958 | ||
959 | return; | |
960 | } | |
961 | ||
73167ced SO |
962 | int nfc_llcp_data_received(struct nfc_dev *dev, struct sk_buff *skb) |
963 | { | |
964 | struct nfc_llcp_local *local; | |
965 | ||
966 | local = nfc_llcp_find_local(dev); | |
967 | if (local == NULL) | |
968 | return -ENODEV; | |
969 | ||
970 | local->rx_pending = skb_get(skb); | |
971 | del_timer(&local->link_timer); | |
972 | queue_work(local->rx_wq, &local->rx_work); | |
973 | ||
974 | return 0; | |
975 | } | |
976 | ||
d646960f SO |
977 | void nfc_llcp_mac_is_down(struct nfc_dev *dev) |
978 | { | |
979 | struct nfc_llcp_local *local; | |
980 | ||
981 | local = nfc_llcp_find_local(dev); | |
982 | if (local == NULL) | |
983 | return; | |
984 | ||
985 | /* Close and purge all existing sockets */ | |
4d22ea15 | 986 | nfc_llcp_socket_release(local, true); |
d646960f SO |
987 | } |
988 | ||
989 | void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx, | |
990 | u8 comm_mode, u8 rf_mode) | |
991 | { | |
992 | struct nfc_llcp_local *local; | |
993 | ||
994 | pr_debug("rf mode %d\n", rf_mode); | |
995 | ||
996 | local = nfc_llcp_find_local(dev); | |
997 | if (local == NULL) | |
998 | return; | |
999 | ||
1000 | local->target_idx = target_idx; | |
1001 | local->comm_mode = comm_mode; | |
1002 | local->rf_mode = rf_mode; | |
1003 | ||
1004 | if (rf_mode == NFC_RF_INITIATOR) { | |
1005 | pr_debug("Queueing Tx work\n"); | |
1006 | ||
1007 | queue_work(local->tx_wq, &local->tx_work); | |
1008 | } else { | |
1009 | mod_timer(&local->link_timer, | |
427a2eb1 | 1010 | jiffies + msecs_to_jiffies(local->remote_lto)); |
d646960f SO |
1011 | } |
1012 | } | |
1013 | ||
1014 | int nfc_llcp_register_device(struct nfc_dev *ndev) | |
1015 | { | |
1016 | struct device *dev = &ndev->dev; | |
1017 | struct nfc_llcp_local *local; | |
1018 | char name[32]; | |
1019 | int err; | |
1020 | ||
1021 | local = kzalloc(sizeof(struct nfc_llcp_local), GFP_KERNEL); | |
1022 | if (local == NULL) | |
1023 | return -ENOMEM; | |
1024 | ||
1025 | local->dev = ndev; | |
1026 | INIT_LIST_HEAD(&local->list); | |
c7aa1225 | 1027 | kref_init(&local->ref); |
d646960f | 1028 | mutex_init(&local->sdp_lock); |
d646960f SO |
1029 | init_timer(&local->link_timer); |
1030 | local->link_timer.data = (unsigned long) local; | |
1031 | local->link_timer.function = nfc_llcp_symm_timer; | |
1032 | ||
1033 | skb_queue_head_init(&local->tx_queue); | |
1034 | INIT_WORK(&local->tx_work, nfc_llcp_tx_work); | |
1035 | snprintf(name, sizeof(name), "%s_llcp_tx_wq", dev_name(dev)); | |
427a2eb1 SO |
1036 | local->tx_wq = |
1037 | alloc_workqueue(name, | |
1038 | WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM, | |
1039 | 1); | |
d646960f SO |
1040 | if (local->tx_wq == NULL) { |
1041 | err = -ENOMEM; | |
1042 | goto err_local; | |
1043 | } | |
1044 | ||
1045 | local->rx_pending = NULL; | |
1046 | INIT_WORK(&local->rx_work, nfc_llcp_rx_work); | |
1047 | snprintf(name, sizeof(name), "%s_llcp_rx_wq", dev_name(dev)); | |
427a2eb1 SO |
1048 | local->rx_wq = |
1049 | alloc_workqueue(name, | |
1050 | WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM, | |
1051 | 1); | |
d646960f SO |
1052 | if (local->rx_wq == NULL) { |
1053 | err = -ENOMEM; | |
1054 | goto err_tx_wq; | |
1055 | } | |
1056 | ||
1057 | INIT_WORK(&local->timeout_work, nfc_llcp_timeout_work); | |
1058 | snprintf(name, sizeof(name), "%s_llcp_timeout_wq", dev_name(dev)); | |
427a2eb1 SO |
1059 | local->timeout_wq = |
1060 | alloc_workqueue(name, | |
1061 | WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM, | |
1062 | 1); | |
d646960f SO |
1063 | if (local->timeout_wq == NULL) { |
1064 | err = -ENOMEM; | |
1065 | goto err_rx_wq; | |
1066 | } | |
1067 | ||
a69f32af SO |
1068 | local->sockets.lock = __RW_LOCK_UNLOCKED(local->sockets.lock); |
1069 | local->connecting_sockets.lock = __RW_LOCK_UNLOCKED(local->connecting_sockets.lock); | |
1070 | ||
d646960f SO |
1071 | nfc_llcp_build_gb(local); |
1072 | ||
1073 | local->remote_miu = LLCP_DEFAULT_MIU; | |
1074 | local->remote_lto = LLCP_DEFAULT_LTO; | |
d646960f SO |
1075 | |
1076 | list_add(&llcp_devices, &local->list); | |
1077 | ||
1078 | return 0; | |
1079 | ||
1080 | err_rx_wq: | |
1081 | destroy_workqueue(local->rx_wq); | |
1082 | ||
1083 | err_tx_wq: | |
1084 | destroy_workqueue(local->tx_wq); | |
1085 | ||
1086 | err_local: | |
1087 | kfree(local); | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | void nfc_llcp_unregister_device(struct nfc_dev *dev) | |
1093 | { | |
1094 | struct nfc_llcp_local *local = nfc_llcp_find_local(dev); | |
1095 | ||
1096 | if (local == NULL) { | |
1097 | pr_debug("No such device\n"); | |
1098 | return; | |
1099 | } | |
1100 | ||
c7aa1225 | 1101 | nfc_llcp_local_put(local); |
d646960f SO |
1102 | } |
1103 | ||
1104 | int __init nfc_llcp_init(void) | |
1105 | { | |
1106 | INIT_LIST_HEAD(&llcp_devices); | |
1107 | ||
1108 | return nfc_llcp_sock_init(); | |
1109 | } | |
1110 | ||
1111 | void nfc_llcp_exit(void) | |
1112 | { | |
1113 | nfc_llcp_sock_exit(); | |
1114 | } |