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 | |
a69f32af SO |
48 | static void nfc_llcp_socket_release(struct nfc_llcp_local *local) |
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 | } | |
81 | } | |
82 | ||
a69f32af | 83 | sk->sk_state = LLCP_CLOSED; |
d646960f | 84 | |
a69f32af | 85 | release_sock(sk); |
d646960f | 86 | |
a69f32af | 87 | sock_orphan(sk); |
40c75f81 | 88 | |
a69f32af | 89 | sk_del_node_init(sk); |
d646960f SO |
90 | } |
91 | ||
a69f32af | 92 | write_unlock(&local->sockets.lock); |
d646960f SO |
93 | } |
94 | ||
c7aa1225 SO |
95 | struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local) |
96 | { | |
97 | kref_get(&local->ref); | |
98 | ||
99 | return local; | |
100 | } | |
101 | ||
102 | static void local_release(struct kref *ref) | |
103 | { | |
104 | struct nfc_llcp_local *local; | |
105 | ||
106 | local = container_of(ref, struct nfc_llcp_local, ref); | |
107 | ||
108 | list_del(&local->list); | |
109 | nfc_llcp_socket_release(local); | |
110 | del_timer_sync(&local->link_timer); | |
111 | skb_queue_purge(&local->tx_queue); | |
112 | destroy_workqueue(local->tx_wq); | |
113 | destroy_workqueue(local->rx_wq); | |
07922bb1 | 114 | destroy_workqueue(local->timeout_wq); |
c7aa1225 SO |
115 | kfree_skb(local->rx_pending); |
116 | kfree(local); | |
117 | } | |
118 | ||
119 | int nfc_llcp_local_put(struct nfc_llcp_local *local) | |
120 | { | |
a69f32af SO |
121 | WARN_ON(local == NULL); |
122 | ||
123 | if (local == NULL) | |
124 | return 0; | |
125 | ||
c7aa1225 SO |
126 | return kref_put(&local->ref, local_release); |
127 | } | |
128 | ||
b9a76f1d SO |
129 | static void nfc_llcp_clear_sdp(struct nfc_llcp_local *local) |
130 | { | |
131 | mutex_lock(&local->sdp_lock); | |
132 | ||
133 | local->local_wks = 0; | |
134 | local->local_sdp = 0; | |
135 | local->local_sap = 0; | |
136 | ||
137 | mutex_unlock(&local->sdp_lock); | |
138 | } | |
139 | ||
d646960f SO |
140 | static void nfc_llcp_timeout_work(struct work_struct *work) |
141 | { | |
142 | struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local, | |
427a2eb1 | 143 | timeout_work); |
d646960f SO |
144 | |
145 | nfc_dep_link_down(local->dev); | |
146 | } | |
147 | ||
148 | static void nfc_llcp_symm_timer(unsigned long data) | |
149 | { | |
150 | struct nfc_llcp_local *local = (struct nfc_llcp_local *) data; | |
151 | ||
152 | pr_err("SYMM timeout\n"); | |
153 | ||
154 | queue_work(local->timeout_wq, &local->timeout_work); | |
155 | } | |
156 | ||
157 | struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev) | |
158 | { | |
159 | struct nfc_llcp_local *local, *n; | |
160 | ||
161 | list_for_each_entry_safe(local, n, &llcp_devices, list) | |
162 | if (local->dev == dev) | |
163 | return local; | |
164 | ||
165 | pr_debug("No device found\n"); | |
166 | ||
167 | return NULL; | |
168 | } | |
169 | ||
170 | static char *wks[] = { | |
171 | NULL, | |
172 | NULL, /* SDP */ | |
173 | "urn:nfc:sn:ip", | |
174 | "urn:nfc:sn:obex", | |
175 | "urn:nfc:sn:snep", | |
176 | }; | |
177 | ||
178 | static int nfc_llcp_wks_sap(char *service_name, size_t service_name_len) | |
179 | { | |
180 | int sap, num_wks; | |
181 | ||
182 | pr_debug("%s\n", service_name); | |
183 | ||
184 | if (service_name == NULL) | |
185 | return -EINVAL; | |
186 | ||
187 | num_wks = ARRAY_SIZE(wks); | |
188 | ||
427a2eb1 | 189 | for (sap = 0; sap < num_wks; sap++) { |
d646960f SO |
190 | if (wks[sap] == NULL) |
191 | continue; | |
192 | ||
193 | if (strncmp(wks[sap], service_name, service_name_len) == 0) | |
194 | return sap; | |
195 | } | |
196 | ||
197 | return -EINVAL; | |
198 | } | |
199 | ||
200 | u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local, | |
427a2eb1 | 201 | struct nfc_llcp_sock *sock) |
d646960f SO |
202 | { |
203 | mutex_lock(&local->sdp_lock); | |
204 | ||
205 | if (sock->service_name != NULL && sock->service_name_len > 0) { | |
206 | int ssap = nfc_llcp_wks_sap(sock->service_name, | |
427a2eb1 | 207 | sock->service_name_len); |
d646960f SO |
208 | |
209 | if (ssap > 0) { | |
210 | pr_debug("WKS %d\n", ssap); | |
211 | ||
212 | /* This is a WKS, let's check if it's free */ | |
213 | if (local->local_wks & BIT(ssap)) { | |
214 | mutex_unlock(&local->sdp_lock); | |
215 | ||
216 | return LLCP_SAP_MAX; | |
217 | } | |
218 | ||
1762c17c | 219 | set_bit(ssap, &local->local_wks); |
d646960f SO |
220 | mutex_unlock(&local->sdp_lock); |
221 | ||
222 | return ssap; | |
223 | } | |
224 | ||
225 | /* | |
226 | * This is not a well known service, | |
227 | * we should try to find a local SDP free spot | |
228 | */ | |
229 | ssap = find_first_zero_bit(&local->local_sdp, LLCP_SDP_NUM_SAP); | |
230 | if (ssap == LLCP_SDP_NUM_SAP) { | |
231 | mutex_unlock(&local->sdp_lock); | |
232 | ||
233 | return LLCP_SAP_MAX; | |
234 | } | |
235 | ||
236 | pr_debug("SDP ssap %d\n", LLCP_WKS_NUM_SAP + ssap); | |
237 | ||
1762c17c | 238 | set_bit(ssap, &local->local_sdp); |
d646960f SO |
239 | mutex_unlock(&local->sdp_lock); |
240 | ||
241 | return LLCP_WKS_NUM_SAP + ssap; | |
242 | ||
243 | } else if (sock->ssap != 0) { | |
244 | if (sock->ssap < LLCP_WKS_NUM_SAP) { | |
1762c17c SO |
245 | if (!test_bit(sock->ssap, &local->local_wks)) { |
246 | set_bit(sock->ssap, &local->local_wks); | |
d646960f SO |
247 | mutex_unlock(&local->sdp_lock); |
248 | ||
249 | return sock->ssap; | |
250 | } | |
251 | ||
252 | } else if (sock->ssap < LLCP_SDP_NUM_SAP) { | |
1762c17c SO |
253 | if (!test_bit(sock->ssap - LLCP_WKS_NUM_SAP, |
254 | &local->local_sdp)) { | |
255 | set_bit(sock->ssap - LLCP_WKS_NUM_SAP, | |
256 | &local->local_sdp); | |
d646960f SO |
257 | mutex_unlock(&local->sdp_lock); |
258 | ||
259 | return sock->ssap; | |
260 | } | |
261 | } | |
262 | } | |
263 | ||
264 | mutex_unlock(&local->sdp_lock); | |
265 | ||
266 | return LLCP_SAP_MAX; | |
267 | } | |
268 | ||
269 | u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local) | |
270 | { | |
271 | u8 local_ssap; | |
272 | ||
273 | mutex_lock(&local->sdp_lock); | |
274 | ||
275 | local_ssap = find_first_zero_bit(&local->local_sap, LLCP_LOCAL_NUM_SAP); | |
276 | if (local_ssap == LLCP_LOCAL_NUM_SAP) { | |
277 | mutex_unlock(&local->sdp_lock); | |
278 | return LLCP_SAP_MAX; | |
279 | } | |
280 | ||
1762c17c | 281 | set_bit(local_ssap, &local->local_sap); |
d646960f SO |
282 | |
283 | mutex_unlock(&local->sdp_lock); | |
284 | ||
285 | return local_ssap + LLCP_LOCAL_SAP_OFFSET; | |
286 | } | |
287 | ||
288 | void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap) | |
289 | { | |
290 | u8 local_ssap; | |
291 | unsigned long *sdp; | |
292 | ||
293 | if (ssap < LLCP_WKS_NUM_SAP) { | |
294 | local_ssap = ssap; | |
295 | sdp = &local->local_wks; | |
296 | } else if (ssap < LLCP_LOCAL_NUM_SAP) { | |
297 | local_ssap = ssap - LLCP_WKS_NUM_SAP; | |
298 | sdp = &local->local_sdp; | |
299 | } else if (ssap < LLCP_MAX_SAP) { | |
300 | local_ssap = ssap - LLCP_LOCAL_NUM_SAP; | |
301 | sdp = &local->local_sap; | |
302 | } else { | |
303 | return; | |
304 | } | |
305 | ||
306 | mutex_lock(&local->sdp_lock); | |
307 | ||
1762c17c | 308 | clear_bit(local_ssap, sdp); |
d646960f SO |
309 | |
310 | mutex_unlock(&local->sdp_lock); | |
311 | } | |
312 | ||
47807d3d | 313 | u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len) |
d646960f SO |
314 | { |
315 | struct nfc_llcp_local *local; | |
316 | ||
317 | local = nfc_llcp_find_local(dev); | |
318 | if (local == NULL) { | |
319 | *general_bytes_len = 0; | |
320 | return NULL; | |
321 | } | |
322 | ||
323 | *general_bytes_len = local->gb_len; | |
324 | ||
325 | return local->gb; | |
326 | } | |
327 | ||
328 | static int nfc_llcp_build_gb(struct nfc_llcp_local *local) | |
329 | { | |
330 | u8 *gb_cur, *version_tlv, version, version_length; | |
331 | u8 *lto_tlv, lto, lto_length; | |
332 | u8 *wks_tlv, wks_length; | |
56d5876a SO |
333 | u8 *miux_tlv, miux_length; |
334 | __be16 miux; | |
d646960f SO |
335 | u8 gb_len = 0; |
336 | ||
337 | version = LLCP_VERSION_11; | |
338 | version_tlv = nfc_llcp_build_tlv(LLCP_TLV_VERSION, &version, | |
427a2eb1 | 339 | 1, &version_length); |
d646960f SO |
340 | gb_len += version_length; |
341 | ||
342 | /* 1500 ms */ | |
343 | lto = 150; | |
91b0ade1 | 344 | lto_tlv = nfc_llcp_build_tlv(LLCP_TLV_LTO, <o, 1, <o_length); |
d646960f SO |
345 | gb_len += lto_length; |
346 | ||
347 | pr_debug("Local wks 0x%lx\n", local->local_wks); | |
348 | wks_tlv = nfc_llcp_build_tlv(LLCP_TLV_WKS, (u8 *)&local->local_wks, 2, | |
427a2eb1 | 349 | &wks_length); |
d646960f SO |
350 | gb_len += wks_length; |
351 | ||
56d5876a SO |
352 | miux = cpu_to_be16(LLCP_MAX_MIUX); |
353 | miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0, | |
354 | &miux_length); | |
355 | gb_len += miux_length; | |
356 | ||
d646960f SO |
357 | gb_len += ARRAY_SIZE(llcp_magic); |
358 | ||
359 | if (gb_len > NFC_MAX_GT_LEN) { | |
360 | kfree(version_tlv); | |
361 | return -EINVAL; | |
362 | } | |
363 | ||
364 | gb_cur = local->gb; | |
365 | ||
366 | memcpy(gb_cur, llcp_magic, ARRAY_SIZE(llcp_magic)); | |
367 | gb_cur += ARRAY_SIZE(llcp_magic); | |
368 | ||
369 | memcpy(gb_cur, version_tlv, version_length); | |
370 | gb_cur += version_length; | |
371 | ||
372 | memcpy(gb_cur, lto_tlv, lto_length); | |
373 | gb_cur += lto_length; | |
374 | ||
375 | memcpy(gb_cur, wks_tlv, wks_length); | |
376 | gb_cur += wks_length; | |
377 | ||
56d5876a SO |
378 | memcpy(gb_cur, miux_tlv, miux_length); |
379 | gb_cur += miux_length; | |
380 | ||
d646960f SO |
381 | kfree(version_tlv); |
382 | kfree(lto_tlv); | |
383 | ||
384 | local->gb_len = gb_len; | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len) | |
390 | { | |
391 | struct nfc_llcp_local *local = nfc_llcp_find_local(dev); | |
392 | ||
393 | if (local == NULL) { | |
394 | pr_err("No LLCP device\n"); | |
395 | return -ENODEV; | |
396 | } | |
397 | ||
398 | memset(local->remote_gb, 0, NFC_MAX_GT_LEN); | |
399 | memcpy(local->remote_gb, gb, gb_len); | |
400 | local->remote_gb_len = gb_len; | |
401 | ||
427a2eb1 | 402 | if (local->remote_gb == NULL || local->remote_gb_len == 0) |
d646960f SO |
403 | return -ENODEV; |
404 | ||
405 | if (memcmp(local->remote_gb, llcp_magic, 3)) { | |
406 | pr_err("MAC does not support LLCP\n"); | |
407 | return -EINVAL; | |
408 | } | |
409 | ||
7a06e586 SO |
410 | return nfc_llcp_parse_gb_tlv(local, |
411 | &local->remote_gb[3], | |
412 | local->remote_gb_len - 3); | |
d646960f SO |
413 | } |
414 | ||
d646960f SO |
415 | static u8 nfc_llcp_dsap(struct sk_buff *pdu) |
416 | { | |
417 | return (pdu->data[0] & 0xfc) >> 2; | |
418 | } | |
419 | ||
420 | static u8 nfc_llcp_ptype(struct sk_buff *pdu) | |
421 | { | |
422 | return ((pdu->data[0] & 0x03) << 2) | ((pdu->data[1] & 0xc0) >> 6); | |
423 | } | |
424 | ||
425 | static u8 nfc_llcp_ssap(struct sk_buff *pdu) | |
426 | { | |
427 | return pdu->data[1] & 0x3f; | |
428 | } | |
429 | ||
430 | static u8 nfc_llcp_ns(struct sk_buff *pdu) | |
431 | { | |
432 | return pdu->data[2] >> 4; | |
433 | } | |
434 | ||
435 | static u8 nfc_llcp_nr(struct sk_buff *pdu) | |
436 | { | |
437 | return pdu->data[2] & 0xf; | |
438 | } | |
439 | ||
440 | static void nfc_llcp_set_nrns(struct nfc_llcp_sock *sock, struct sk_buff *pdu) | |
441 | { | |
279cf174 | 442 | pdu->data[2] = (sock->send_n << 4) | (sock->recv_n); |
d646960f SO |
443 | sock->send_n = (sock->send_n + 1) % 16; |
444 | sock->recv_ack_n = (sock->recv_n - 1) % 16; | |
445 | } | |
446 | ||
84457960 SO |
447 | static void nfc_llcp_tx_work(struct work_struct *work) |
448 | { | |
449 | struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local, | |
450 | tx_work); | |
451 | struct sk_buff *skb; | |
452 | struct sock *sk; | |
453 | struct nfc_llcp_sock *llcp_sock; | |
454 | ||
455 | skb = skb_dequeue(&local->tx_queue); | |
456 | if (skb != NULL) { | |
457 | sk = skb->sk; | |
458 | llcp_sock = nfc_llcp_sock(sk); | |
459 | if (llcp_sock != NULL) { | |
460 | int ret; | |
461 | ||
462 | pr_debug("Sending pending skb\n"); | |
463 | print_hex_dump(KERN_DEBUG, "LLCP Tx: ", | |
464 | DUMP_PREFIX_OFFSET, 16, 1, | |
465 | skb->data, skb->len, true); | |
466 | ||
467 | ret = nfc_data_exchange(local->dev, local->target_idx, | |
468 | skb, nfc_llcp_recv, local); | |
469 | ||
470 | if (!ret && nfc_llcp_ptype(skb) == LLCP_PDU_I) { | |
471 | skb = skb_get(skb); | |
472 | skb_queue_tail(&llcp_sock->tx_pending_queue, | |
473 | skb); | |
474 | } | |
475 | } else { | |
476 | nfc_llcp_send_symm(local->dev); | |
477 | } | |
478 | } else { | |
479 | nfc_llcp_send_symm(local->dev); | |
480 | } | |
481 | ||
482 | mod_timer(&local->link_timer, | |
483 | jiffies + msecs_to_jiffies(2 * local->remote_lto)); | |
484 | } | |
485 | ||
a69f32af SO |
486 | static struct nfc_llcp_sock *nfc_llcp_connecting_sock_get(struct nfc_llcp_local *local, |
487 | u8 ssap) | |
488 | { | |
489 | struct sock *sk; | |
490 | struct nfc_llcp_sock *llcp_sock; | |
491 | struct hlist_node *node; | |
492 | ||
493 | read_lock(&local->connecting_sockets.lock); | |
494 | ||
495 | sk_for_each(sk, node, &local->connecting_sockets.head) { | |
496 | llcp_sock = nfc_llcp_sock(sk); | |
497 | ||
5a0f6f3b SO |
498 | if (llcp_sock->ssap == ssap) { |
499 | sock_hold(&llcp_sock->sk); | |
a69f32af | 500 | goto out; |
5a0f6f3b | 501 | } |
a69f32af SO |
502 | } |
503 | ||
504 | llcp_sock = NULL; | |
505 | ||
506 | out: | |
507 | read_unlock(&local->connecting_sockets.lock); | |
508 | ||
a69f32af SO |
509 | return llcp_sock; |
510 | } | |
511 | ||
d646960f | 512 | static struct nfc_llcp_sock *nfc_llcp_sock_get(struct nfc_llcp_local *local, |
427a2eb1 | 513 | u8 ssap, u8 dsap) |
d646960f | 514 | { |
a69f32af SO |
515 | struct sock *sk; |
516 | struct hlist_node *node; | |
517 | struct nfc_llcp_sock *llcp_sock; | |
d646960f | 518 | |
ff353d86 SO |
519 | pr_debug("ssap dsap %d %d\n", ssap, dsap); |
520 | ||
d646960f SO |
521 | if (ssap == 0 && dsap == 0) |
522 | return NULL; | |
523 | ||
a69f32af SO |
524 | read_lock(&local->sockets.lock); |
525 | ||
526 | llcp_sock = NULL; | |
d646960f | 527 | |
a69f32af SO |
528 | sk_for_each(sk, node, &local->sockets.head) { |
529 | llcp_sock = nfc_llcp_sock(sk); | |
d646960f | 530 | |
a69f32af SO |
531 | if (llcp_sock->ssap == ssap && |
532 | llcp_sock->dsap == dsap) | |
533 | break; | |
d646960f SO |
534 | } |
535 | ||
a69f32af SO |
536 | read_unlock(&local->sockets.lock); |
537 | ||
538 | if (llcp_sock == NULL) | |
539 | return NULL; | |
540 | ||
541 | sock_hold(&llcp_sock->sk); | |
542 | ||
543 | return llcp_sock; | |
544 | } | |
545 | ||
546 | static struct nfc_llcp_sock *nfc_llcp_sock_get_sn(struct nfc_llcp_local *local, | |
547 | u8 *sn, size_t sn_len) | |
548 | { | |
549 | struct sock *sk; | |
550 | struct hlist_node *node; | |
551 | struct nfc_llcp_sock *llcp_sock; | |
552 | ||
553 | pr_debug("sn %zd\n", sn_len); | |
554 | ||
555 | if (sn == NULL || sn_len == 0) | |
556 | return NULL; | |
557 | ||
558 | read_lock(&local->sockets.lock); | |
559 | ||
560 | llcp_sock = NULL; | |
561 | ||
562 | sk_for_each(sk, node, &local->sockets.head) { | |
563 | llcp_sock = nfc_llcp_sock(sk); | |
564 | ||
565 | if (llcp_sock->sk.sk_state != LLCP_LISTEN) | |
566 | continue; | |
567 | ||
568 | if (llcp_sock->service_name == NULL || | |
569 | llcp_sock->service_name_len == 0) | |
570 | continue; | |
571 | ||
572 | if (llcp_sock->service_name_len != sn_len) | |
573 | continue; | |
574 | ||
575 | if (memcmp(sn, llcp_sock->service_name, sn_len) == 0) | |
576 | break; | |
d646960f SO |
577 | } |
578 | ||
a69f32af | 579 | read_unlock(&local->sockets.lock); |
d646960f | 580 | |
a69f32af SO |
581 | if (llcp_sock == NULL) |
582 | return NULL; | |
d646960f | 583 | |
a69f32af SO |
584 | sock_hold(&llcp_sock->sk); |
585 | ||
586 | return llcp_sock; | |
d646960f SO |
587 | } |
588 | ||
589 | static void nfc_llcp_sock_put(struct nfc_llcp_sock *sock) | |
590 | { | |
591 | sock_put(&sock->sk); | |
592 | } | |
593 | ||
594 | static u8 *nfc_llcp_connect_sn(struct sk_buff *skb, size_t *sn_len) | |
595 | { | |
596 | u8 *tlv = &skb->data[2], type, length; | |
597 | size_t tlv_array_len = skb->len - LLCP_HEADER_SIZE, offset = 0; | |
598 | ||
599 | while (offset < tlv_array_len) { | |
600 | type = tlv[0]; | |
601 | length = tlv[1]; | |
602 | ||
603 | pr_debug("type 0x%x length %d\n", type, length); | |
604 | ||
605 | if (type == LLCP_TLV_SN) { | |
606 | *sn_len = length; | |
607 | return &tlv[2]; | |
608 | } | |
609 | ||
610 | offset += length + 2; | |
611 | tlv += length + 2; | |
612 | } | |
613 | ||
614 | return NULL; | |
615 | } | |
616 | ||
617 | static void nfc_llcp_recv_connect(struct nfc_llcp_local *local, | |
427a2eb1 | 618 | struct sk_buff *skb) |
d646960f SO |
619 | { |
620 | struct sock *new_sk, *parent; | |
621 | struct nfc_llcp_sock *sock, *new_sock; | |
a69f32af | 622 | u8 dsap, ssap, reason; |
d646960f SO |
623 | |
624 | dsap = nfc_llcp_dsap(skb); | |
625 | ssap = nfc_llcp_ssap(skb); | |
626 | ||
627 | pr_debug("%d %d\n", dsap, ssap); | |
628 | ||
d646960f | 629 | if (dsap != LLCP_SAP_SDP) { |
a69f32af SO |
630 | sock = nfc_llcp_sock_get(local, dsap, LLCP_SAP_SDP); |
631 | if (sock == NULL || sock->sk.sk_state != LLCP_LISTEN) { | |
d646960f SO |
632 | reason = LLCP_DM_NOBOUND; |
633 | goto fail; | |
634 | } | |
d646960f SO |
635 | } else { |
636 | u8 *sn; | |
637 | size_t sn_len; | |
638 | ||
639 | sn = nfc_llcp_connect_sn(skb, &sn_len); | |
640 | if (sn == NULL) { | |
641 | reason = LLCP_DM_NOBOUND; | |
642 | goto fail; | |
643 | } | |
644 | ||
645 | pr_debug("Service name length %zu\n", sn_len); | |
646 | ||
a69f32af SO |
647 | sock = nfc_llcp_sock_get_sn(local, sn, sn_len); |
648 | if (sock == NULL) { | |
649 | reason = LLCP_DM_NOBOUND; | |
650 | goto fail; | |
d646960f | 651 | } |
d646960f SO |
652 | } |
653 | ||
a69f32af | 654 | lock_sock(&sock->sk); |
d646960f | 655 | |
d646960f SO |
656 | parent = &sock->sk; |
657 | ||
658 | if (sk_acceptq_is_full(parent)) { | |
659 | reason = LLCP_DM_REJ; | |
660 | release_sock(&sock->sk); | |
661 | sock_put(&sock->sk); | |
662 | goto fail; | |
663 | } | |
664 | ||
427a2eb1 | 665 | new_sk = nfc_llcp_sock_alloc(NULL, parent->sk_type, GFP_ATOMIC); |
d646960f SO |
666 | if (new_sk == NULL) { |
667 | reason = LLCP_DM_REJ; | |
668 | release_sock(&sock->sk); | |
669 | sock_put(&sock->sk); | |
670 | goto fail; | |
671 | } | |
672 | ||
673 | new_sock = nfc_llcp_sock(new_sk); | |
674 | new_sock->dev = local->dev; | |
c7aa1225 | 675 | new_sock->local = nfc_llcp_local_get(local); |
93d7e490 | 676 | new_sock->miu = local->remote_miu; |
d646960f | 677 | new_sock->nfc_protocol = sock->nfc_protocol; |
a69f32af | 678 | new_sock->ssap = sock->ssap; |
d646960f | 679 | new_sock->dsap = ssap; |
025f1520 | 680 | new_sock->target_idx = local->target_idx; |
d646960f SO |
681 | new_sock->parent = parent; |
682 | ||
7a06e586 SO |
683 | nfc_llcp_parse_connection_tlv(new_sock, &skb->data[LLCP_HEADER_SIZE], |
684 | skb->len - LLCP_HEADER_SIZE); | |
685 | ||
d646960f SO |
686 | pr_debug("new sock %p sk %p\n", new_sock, &new_sock->sk); |
687 | ||
a69f32af | 688 | nfc_llcp_sock_link(&local->sockets, new_sk); |
d646960f SO |
689 | |
690 | nfc_llcp_accept_enqueue(&sock->sk, new_sk); | |
691 | ||
692 | nfc_get_device(local->dev->idx); | |
693 | ||
694 | new_sk->sk_state = LLCP_CONNECTED; | |
695 | ||
696 | /* Wake the listening processes */ | |
697 | parent->sk_data_ready(parent, 0); | |
698 | ||
699 | /* Send CC */ | |
700 | nfc_llcp_send_cc(new_sock); | |
701 | ||
702 | release_sock(&sock->sk); | |
703 | sock_put(&sock->sk); | |
704 | ||
705 | return; | |
706 | ||
707 | fail: | |
708 | /* Send DM */ | |
709 | nfc_llcp_send_dm(local, dsap, ssap, reason); | |
710 | ||
711 | return; | |
712 | ||
713 | } | |
714 | ||
d094afa1 | 715 | int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock) |
4722d2b7 | 716 | { |
d094afa1 | 717 | int nr_frames = 0; |
4722d2b7 SO |
718 | struct nfc_llcp_local *local = sock->local; |
719 | ||
720 | pr_debug("Remote ready %d tx queue len %d remote rw %d", | |
427a2eb1 | 721 | sock->remote_ready, skb_queue_len(&sock->tx_pending_queue), |
7a06e586 | 722 | sock->rw); |
4722d2b7 SO |
723 | |
724 | /* Try to queue some I frames for transmission */ | |
725 | while (sock->remote_ready && | |
7a06e586 | 726 | skb_queue_len(&sock->tx_pending_queue) < sock->rw) { |
84457960 | 727 | struct sk_buff *pdu; |
4722d2b7 SO |
728 | |
729 | pdu = skb_dequeue(&sock->tx_queue); | |
730 | if (pdu == NULL) | |
731 | break; | |
732 | ||
733 | /* Update N(S)/N(R) */ | |
734 | nfc_llcp_set_nrns(sock, pdu); | |
735 | ||
4722d2b7 | 736 | skb_queue_tail(&local->tx_queue, pdu); |
d094afa1 | 737 | nr_frames++; |
4722d2b7 | 738 | } |
d094afa1 SO |
739 | |
740 | return nr_frames; | |
4722d2b7 SO |
741 | } |
742 | ||
d646960f | 743 | static void nfc_llcp_recv_hdlc(struct nfc_llcp_local *local, |
427a2eb1 | 744 | struct sk_buff *skb) |
d646960f SO |
745 | { |
746 | struct nfc_llcp_sock *llcp_sock; | |
747 | struct sock *sk; | |
748 | u8 dsap, ssap, ptype, ns, nr; | |
749 | ||
750 | ptype = nfc_llcp_ptype(skb); | |
751 | dsap = nfc_llcp_dsap(skb); | |
752 | ssap = nfc_llcp_ssap(skb); | |
753 | ns = nfc_llcp_ns(skb); | |
754 | nr = nfc_llcp_nr(skb); | |
755 | ||
756 | pr_debug("%d %d R %d S %d\n", dsap, ssap, nr, ns); | |
757 | ||
758 | llcp_sock = nfc_llcp_sock_get(local, dsap, ssap); | |
759 | if (llcp_sock == NULL) { | |
760 | nfc_llcp_send_dm(local, dsap, ssap, LLCP_DM_NOCONN); | |
761 | return; | |
762 | } | |
763 | ||
764 | sk = &llcp_sock->sk; | |
765 | lock_sock(sk); | |
766 | if (sk->sk_state == LLCP_CLOSED) { | |
767 | release_sock(sk); | |
768 | nfc_llcp_sock_put(llcp_sock); | |
769 | } | |
770 | ||
d646960f SO |
771 | /* Pass the payload upstream */ |
772 | if (ptype == LLCP_PDU_I) { | |
773 | pr_debug("I frame, queueing on %p\n", &llcp_sock->sk); | |
774 | ||
53aef920 SO |
775 | if (ns == llcp_sock->recv_n) |
776 | llcp_sock->recv_n = (llcp_sock->recv_n + 1) % 16; | |
777 | else | |
778 | pr_err("Received out of sequence I PDU\n"); | |
779 | ||
d646960f SO |
780 | skb_pull(skb, LLCP_HEADER_SIZE + LLCP_SEQUENCE_SIZE); |
781 | if (sock_queue_rcv_skb(&llcp_sock->sk, skb)) { | |
782 | pr_err("receive queue is full\n"); | |
783 | skb_queue_head(&llcp_sock->tx_backlog_queue, skb); | |
784 | } | |
785 | } | |
786 | ||
787 | /* Remove skbs from the pending queue */ | |
788 | if (llcp_sock->send_ack_n != nr) { | |
789 | struct sk_buff *s, *tmp; | |
790 | ||
791 | llcp_sock->send_ack_n = nr; | |
792 | ||
84457960 SO |
793 | /* Remove and free all skbs until ns == nr */ |
794 | skb_queue_walk_safe(&llcp_sock->tx_pending_queue, s, tmp) { | |
795 | skb_unlink(s, &llcp_sock->tx_pending_queue); | |
796 | kfree_skb(s); | |
797 | ||
798 | if (nfc_llcp_ns(s) == nr) | |
799 | break; | |
800 | } | |
801 | ||
802 | /* Re-queue the remaining skbs for transmission */ | |
803 | skb_queue_reverse_walk_safe(&llcp_sock->tx_pending_queue, | |
804 | s, tmp) { | |
805 | skb_unlink(s, &llcp_sock->tx_pending_queue); | |
806 | skb_queue_head(&local->tx_queue, s); | |
807 | } | |
d646960f SO |
808 | } |
809 | ||
53aef920 SO |
810 | if (ptype == LLCP_PDU_RR) |
811 | llcp_sock->remote_ready = true; | |
427a2eb1 | 812 | else if (ptype == LLCP_PDU_RNR) |
53aef920 SO |
813 | llcp_sock->remote_ready = false; |
814 | ||
56af2568 | 815 | if (nfc_llcp_queue_i_frames(llcp_sock) == 0 && ptype == LLCP_PDU_I) |
d094afa1 | 816 | nfc_llcp_send_rr(llcp_sock); |
d646960f SO |
817 | |
818 | release_sock(sk); | |
819 | nfc_llcp_sock_put(llcp_sock); | |
820 | } | |
821 | ||
822 | static void nfc_llcp_recv_disc(struct nfc_llcp_local *local, | |
427a2eb1 | 823 | struct sk_buff *skb) |
d646960f SO |
824 | { |
825 | struct nfc_llcp_sock *llcp_sock; | |
826 | struct sock *sk; | |
827 | u8 dsap, ssap; | |
828 | ||
829 | dsap = nfc_llcp_dsap(skb); | |
830 | ssap = nfc_llcp_ssap(skb); | |
831 | ||
832 | llcp_sock = nfc_llcp_sock_get(local, dsap, ssap); | |
833 | if (llcp_sock == NULL) { | |
834 | nfc_llcp_send_dm(local, dsap, ssap, LLCP_DM_NOCONN); | |
835 | return; | |
836 | } | |
837 | ||
838 | sk = &llcp_sock->sk; | |
839 | lock_sock(sk); | |
840 | if (sk->sk_state == LLCP_CLOSED) { | |
841 | release_sock(sk); | |
842 | nfc_llcp_sock_put(llcp_sock); | |
843 | } | |
844 | ||
d646960f SO |
845 | if (sk->sk_state == LLCP_CONNECTED) { |
846 | nfc_put_device(local->dev); | |
847 | sk->sk_state = LLCP_CLOSED; | |
848 | sk->sk_state_change(sk); | |
849 | } | |
850 | ||
851 | nfc_llcp_send_dm(local, dsap, ssap, LLCP_DM_DISC); | |
852 | ||
853 | release_sock(sk); | |
854 | nfc_llcp_sock_put(llcp_sock); | |
855 | } | |
856 | ||
427a2eb1 | 857 | static void nfc_llcp_recv_cc(struct nfc_llcp_local *local, struct sk_buff *skb) |
d646960f SO |
858 | { |
859 | struct nfc_llcp_sock *llcp_sock; | |
ff353d86 | 860 | struct sock *sk; |
d646960f SO |
861 | u8 dsap, ssap; |
862 | ||
d646960f SO |
863 | dsap = nfc_llcp_dsap(skb); |
864 | ssap = nfc_llcp_ssap(skb); | |
865 | ||
a69f32af | 866 | llcp_sock = nfc_llcp_connecting_sock_get(local, dsap); |
d646960f SO |
867 | if (llcp_sock == NULL) { |
868 | pr_err("Invalid CC\n"); | |
869 | nfc_llcp_send_dm(local, dsap, ssap, LLCP_DM_NOCONN); | |
870 | ||
871 | return; | |
872 | } | |
873 | ||
ff353d86 | 874 | sk = &llcp_sock->sk; |
d646960f | 875 | |
a69f32af SO |
876 | /* Unlink from connecting and link to the client array */ |
877 | nfc_llcp_sock_unlink(&local->connecting_sockets, sk); | |
878 | nfc_llcp_sock_link(&local->sockets, sk); | |
879 | llcp_sock->dsap = ssap; | |
880 | ||
7a06e586 SO |
881 | nfc_llcp_parse_connection_tlv(llcp_sock, &skb->data[LLCP_HEADER_SIZE], |
882 | skb->len - LLCP_HEADER_SIZE); | |
d646960f | 883 | |
ff353d86 SO |
884 | sk->sk_state = LLCP_CONNECTED; |
885 | sk->sk_state_change(sk); | |
886 | ||
d646960f SO |
887 | nfc_llcp_sock_put(llcp_sock); |
888 | } | |
889 | ||
890 | static void nfc_llcp_rx_work(struct work_struct *work) | |
891 | { | |
892 | struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local, | |
427a2eb1 | 893 | rx_work); |
d646960f SO |
894 | u8 dsap, ssap, ptype; |
895 | struct sk_buff *skb; | |
896 | ||
897 | skb = local->rx_pending; | |
898 | if (skb == NULL) { | |
899 | pr_debug("No pending SKB\n"); | |
900 | return; | |
901 | } | |
902 | ||
903 | ptype = nfc_llcp_ptype(skb); | |
904 | dsap = nfc_llcp_dsap(skb); | |
905 | ssap = nfc_llcp_ssap(skb); | |
906 | ||
907 | pr_debug("ptype 0x%x dsap 0x%x ssap 0x%x\n", ptype, dsap, ssap); | |
908 | ||
4be646ec SO |
909 | if (ptype != LLCP_PDU_SYMM) |
910 | print_hex_dump(KERN_DEBUG, "LLCP Rx: ", DUMP_PREFIX_OFFSET, | |
911 | 16, 1, skb->data, skb->len, true); | |
912 | ||
d646960f SO |
913 | switch (ptype) { |
914 | case LLCP_PDU_SYMM: | |
915 | pr_debug("SYMM\n"); | |
916 | break; | |
917 | ||
918 | case LLCP_PDU_CONNECT: | |
919 | pr_debug("CONNECT\n"); | |
920 | nfc_llcp_recv_connect(local, skb); | |
921 | break; | |
922 | ||
923 | case LLCP_PDU_DISC: | |
924 | pr_debug("DISC\n"); | |
925 | nfc_llcp_recv_disc(local, skb); | |
926 | break; | |
927 | ||
928 | case LLCP_PDU_CC: | |
929 | pr_debug("CC\n"); | |
930 | nfc_llcp_recv_cc(local, skb); | |
931 | break; | |
932 | ||
933 | case LLCP_PDU_I: | |
934 | case LLCP_PDU_RR: | |
53aef920 | 935 | case LLCP_PDU_RNR: |
d646960f SO |
936 | pr_debug("I frame\n"); |
937 | nfc_llcp_recv_hdlc(local, skb); | |
938 | break; | |
939 | ||
940 | } | |
941 | ||
942 | queue_work(local->tx_wq, &local->tx_work); | |
943 | kfree_skb(local->rx_pending); | |
944 | local->rx_pending = NULL; | |
945 | ||
946 | return; | |
947 | } | |
948 | ||
949 | void nfc_llcp_recv(void *data, struct sk_buff *skb, int err) | |
950 | { | |
951 | struct nfc_llcp_local *local = (struct nfc_llcp_local *) data; | |
952 | ||
953 | pr_debug("Received an LLCP PDU\n"); | |
954 | if (err < 0) { | |
427a2eb1 | 955 | pr_err("err %d\n", err); |
d646960f SO |
956 | return; |
957 | } | |
958 | ||
959 | local->rx_pending = skb_get(skb); | |
960 | del_timer(&local->link_timer); | |
961 | queue_work(local->rx_wq, &local->rx_work); | |
962 | ||
963 | return; | |
964 | } | |
965 | ||
73167ced SO |
966 | int nfc_llcp_data_received(struct nfc_dev *dev, struct sk_buff *skb) |
967 | { | |
968 | struct nfc_llcp_local *local; | |
969 | ||
970 | local = nfc_llcp_find_local(dev); | |
971 | if (local == NULL) | |
972 | return -ENODEV; | |
973 | ||
974 | local->rx_pending = skb_get(skb); | |
975 | del_timer(&local->link_timer); | |
976 | queue_work(local->rx_wq, &local->rx_work); | |
977 | ||
978 | return 0; | |
979 | } | |
980 | ||
d646960f SO |
981 | void nfc_llcp_mac_is_down(struct nfc_dev *dev) |
982 | { | |
983 | struct nfc_llcp_local *local; | |
984 | ||
985 | local = nfc_llcp_find_local(dev); | |
986 | if (local == NULL) | |
987 | return; | |
988 | ||
b9a76f1d SO |
989 | nfc_llcp_clear_sdp(local); |
990 | ||
d646960f SO |
991 | /* Close and purge all existing sockets */ |
992 | nfc_llcp_socket_release(local); | |
993 | } | |
994 | ||
995 | void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx, | |
996 | u8 comm_mode, u8 rf_mode) | |
997 | { | |
998 | struct nfc_llcp_local *local; | |
999 | ||
1000 | pr_debug("rf mode %d\n", rf_mode); | |
1001 | ||
1002 | local = nfc_llcp_find_local(dev); | |
1003 | if (local == NULL) | |
1004 | return; | |
1005 | ||
1006 | local->target_idx = target_idx; | |
1007 | local->comm_mode = comm_mode; | |
1008 | local->rf_mode = rf_mode; | |
1009 | ||
1010 | if (rf_mode == NFC_RF_INITIATOR) { | |
1011 | pr_debug("Queueing Tx work\n"); | |
1012 | ||
1013 | queue_work(local->tx_wq, &local->tx_work); | |
1014 | } else { | |
1015 | mod_timer(&local->link_timer, | |
427a2eb1 | 1016 | jiffies + msecs_to_jiffies(local->remote_lto)); |
d646960f SO |
1017 | } |
1018 | } | |
1019 | ||
1020 | int nfc_llcp_register_device(struct nfc_dev *ndev) | |
1021 | { | |
1022 | struct device *dev = &ndev->dev; | |
1023 | struct nfc_llcp_local *local; | |
1024 | char name[32]; | |
1025 | int err; | |
1026 | ||
1027 | local = kzalloc(sizeof(struct nfc_llcp_local), GFP_KERNEL); | |
1028 | if (local == NULL) | |
1029 | return -ENOMEM; | |
1030 | ||
1031 | local->dev = ndev; | |
1032 | INIT_LIST_HEAD(&local->list); | |
c7aa1225 | 1033 | kref_init(&local->ref); |
d646960f | 1034 | mutex_init(&local->sdp_lock); |
d646960f SO |
1035 | init_timer(&local->link_timer); |
1036 | local->link_timer.data = (unsigned long) local; | |
1037 | local->link_timer.function = nfc_llcp_symm_timer; | |
1038 | ||
1039 | skb_queue_head_init(&local->tx_queue); | |
1040 | INIT_WORK(&local->tx_work, nfc_llcp_tx_work); | |
1041 | snprintf(name, sizeof(name), "%s_llcp_tx_wq", dev_name(dev)); | |
427a2eb1 SO |
1042 | local->tx_wq = |
1043 | alloc_workqueue(name, | |
1044 | WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM, | |
1045 | 1); | |
d646960f SO |
1046 | if (local->tx_wq == NULL) { |
1047 | err = -ENOMEM; | |
1048 | goto err_local; | |
1049 | } | |
1050 | ||
1051 | local->rx_pending = NULL; | |
1052 | INIT_WORK(&local->rx_work, nfc_llcp_rx_work); | |
1053 | snprintf(name, sizeof(name), "%s_llcp_rx_wq", dev_name(dev)); | |
427a2eb1 SO |
1054 | local->rx_wq = |
1055 | alloc_workqueue(name, | |
1056 | WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM, | |
1057 | 1); | |
d646960f SO |
1058 | if (local->rx_wq == NULL) { |
1059 | err = -ENOMEM; | |
1060 | goto err_tx_wq; | |
1061 | } | |
1062 | ||
1063 | INIT_WORK(&local->timeout_work, nfc_llcp_timeout_work); | |
1064 | snprintf(name, sizeof(name), "%s_llcp_timeout_wq", dev_name(dev)); | |
427a2eb1 SO |
1065 | local->timeout_wq = |
1066 | alloc_workqueue(name, | |
1067 | WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM, | |
1068 | 1); | |
d646960f SO |
1069 | if (local->timeout_wq == NULL) { |
1070 | err = -ENOMEM; | |
1071 | goto err_rx_wq; | |
1072 | } | |
1073 | ||
a69f32af SO |
1074 | local->sockets.lock = __RW_LOCK_UNLOCKED(local->sockets.lock); |
1075 | local->connecting_sockets.lock = __RW_LOCK_UNLOCKED(local->connecting_sockets.lock); | |
1076 | ||
d646960f SO |
1077 | nfc_llcp_build_gb(local); |
1078 | ||
1079 | local->remote_miu = LLCP_DEFAULT_MIU; | |
1080 | local->remote_lto = LLCP_DEFAULT_LTO; | |
d646960f SO |
1081 | |
1082 | list_add(&llcp_devices, &local->list); | |
1083 | ||
1084 | return 0; | |
1085 | ||
1086 | err_rx_wq: | |
1087 | destroy_workqueue(local->rx_wq); | |
1088 | ||
1089 | err_tx_wq: | |
1090 | destroy_workqueue(local->tx_wq); | |
1091 | ||
1092 | err_local: | |
1093 | kfree(local); | |
1094 | ||
1095 | return 0; | |
1096 | } | |
1097 | ||
1098 | void nfc_llcp_unregister_device(struct nfc_dev *dev) | |
1099 | { | |
1100 | struct nfc_llcp_local *local = nfc_llcp_find_local(dev); | |
1101 | ||
1102 | if (local == NULL) { | |
1103 | pr_debug("No such device\n"); | |
1104 | return; | |
1105 | } | |
1106 | ||
c7aa1225 | 1107 | nfc_llcp_local_put(local); |
d646960f SO |
1108 | } |
1109 | ||
1110 | int __init nfc_llcp_init(void) | |
1111 | { | |
1112 | INIT_LIST_HEAD(&llcp_devices); | |
1113 | ||
1114 | return nfc_llcp_sock_init(); | |
1115 | } | |
1116 | ||
1117 | void nfc_llcp_exit(void) | |
1118 | { | |
1119 | nfc_llcp_sock_exit(); | |
1120 | } |