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1da177e4 LT |
1 | /********************************************************************* |
2 | * | |
3 | * Filename: af_irda.c | |
4 | * Version: 0.9 | |
5 | * Description: IrDA sockets implementation | |
6 | * Status: Stable | |
7 | * Author: Dag Brattli <dagb@cs.uit.no> | |
8 | * Created at: Sun May 31 10:12:43 1998 | |
9 | * Modified at: Sat Dec 25 21:10:23 1999 | |
10 | * Modified by: Dag Brattli <dag@brattli.net> | |
11 | * Sources: af_netroom.c, af_ax25.c, af_rose.c, af_x25.c etc. | |
12 | * | |
13 | * Copyright (c) 1999 Dag Brattli <dagb@cs.uit.no> | |
14 | * Copyright (c) 1999-2003 Jean Tourrilhes <jt@hpl.hp.com> | |
15 | * All Rights Reserved. | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or | |
18 | * modify it under the terms of the GNU General Public License as | |
19 | * published by the Free Software Foundation; either version 2 of | |
20 | * the License, or (at your option) any later version. | |
21 | * | |
22 | * This program is distributed in the hope that it will be useful, | |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26 | * | |
27 | * You should have received a copy of the GNU General Public License | |
28 | * along with this program; if not, write to the Free Software | |
29 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
30 | * MA 02111-1307 USA | |
31 | * | |
32 | * Linux-IrDA now supports four different types of IrDA sockets: | |
33 | * | |
34 | * o SOCK_STREAM: TinyTP connections with SAR disabled. The | |
35 | * max SDU size is 0 for conn. of this type | |
36 | * o SOCK_SEQPACKET: TinyTP connections with SAR enabled. TTP may | |
37 | * fragment the messages, but will preserve | |
38 | * the message boundaries | |
39 | * o SOCK_DGRAM: IRDAPROTO_UNITDATA: TinyTP connections with Unitdata | |
40 | * (unreliable) transfers | |
41 | * IRDAPROTO_ULTRA: Connectionless and unreliable data | |
42 | * | |
43 | ********************************************************************/ | |
44 | ||
4fc268d2 | 45 | #include <linux/capability.h> |
1da177e4 LT |
46 | #include <linux/module.h> |
47 | #include <linux/types.h> | |
405f5571 | 48 | #include <linux/smp_lock.h> |
1da177e4 LT |
49 | #include <linux/socket.h> |
50 | #include <linux/sockios.h> | |
5a0e3ad6 | 51 | #include <linux/slab.h> |
1da177e4 LT |
52 | #include <linux/init.h> |
53 | #include <linux/net.h> | |
54 | #include <linux/irda.h> | |
55 | #include <linux/poll.h> | |
56 | ||
57 | #include <asm/ioctls.h> /* TIOCOUTQ, TIOCINQ */ | |
58 | #include <asm/uaccess.h> | |
59 | ||
60 | #include <net/sock.h> | |
c752f073 | 61 | #include <net/tcp_states.h> |
1da177e4 LT |
62 | |
63 | #include <net/irda/af_irda.h> | |
64 | ||
3f378b68 | 65 | static int irda_create(struct net *net, struct socket *sock, int protocol, int kern); |
1da177e4 | 66 | |
90ddc4f0 ED |
67 | static const struct proto_ops irda_stream_ops; |
68 | static const struct proto_ops irda_seqpacket_ops; | |
69 | static const struct proto_ops irda_dgram_ops; | |
1da177e4 LT |
70 | |
71 | #ifdef CONFIG_IRDA_ULTRA | |
90ddc4f0 | 72 | static const struct proto_ops irda_ultra_ops; |
1da177e4 LT |
73 | #define ULTRA_MAX_DATA 382 |
74 | #endif /* CONFIG_IRDA_ULTRA */ | |
75 | ||
76 | #define IRDA_MAX_HEADER (TTP_MAX_HEADER) | |
77 | ||
78 | /* | |
79 | * Function irda_data_indication (instance, sap, skb) | |
80 | * | |
81 | * Received some data from TinyTP. Just queue it on the receive queue | |
82 | * | |
83 | */ | |
84 | static int irda_data_indication(void *instance, void *sap, struct sk_buff *skb) | |
85 | { | |
86 | struct irda_sock *self; | |
87 | struct sock *sk; | |
88 | int err; | |
89 | ||
0dc47877 | 90 | IRDA_DEBUG(3, "%s()\n", __func__); |
1da177e4 LT |
91 | |
92 | self = instance; | |
93 | sk = instance; | |
1da177e4 LT |
94 | |
95 | err = sock_queue_rcv_skb(sk, skb); | |
96 | if (err) { | |
0dc47877 | 97 | IRDA_DEBUG(1, "%s(), error: no more mem!\n", __func__); |
1da177e4 LT |
98 | self->rx_flow = FLOW_STOP; |
99 | ||
100 | /* When we return error, TTP will need to requeue the skb */ | |
101 | return err; | |
102 | } | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
107 | /* | |
108 | * Function irda_disconnect_indication (instance, sap, reason, skb) | |
109 | * | |
110 | * Connection has been closed. Check reason to find out why | |
111 | * | |
112 | */ | |
113 | static void irda_disconnect_indication(void *instance, void *sap, | |
114 | LM_REASON reason, struct sk_buff *skb) | |
115 | { | |
116 | struct irda_sock *self; | |
117 | struct sock *sk; | |
118 | ||
119 | self = instance; | |
120 | ||
0dc47877 | 121 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
122 | |
123 | /* Don't care about it, but let's not leak it */ | |
124 | if(skb) | |
125 | dev_kfree_skb(skb); | |
126 | ||
127 | sk = instance; | |
128 | if (sk == NULL) { | |
129 | IRDA_DEBUG(0, "%s(%p) : BUG : sk is NULL\n", | |
0dc47877 | 130 | __func__, self); |
1da177e4 LT |
131 | return; |
132 | } | |
133 | ||
134 | /* Prevent race conditions with irda_release() and irda_shutdown() */ | |
6e66aa15 | 135 | bh_lock_sock(sk); |
1da177e4 LT |
136 | if (!sock_flag(sk, SOCK_DEAD) && sk->sk_state != TCP_CLOSE) { |
137 | sk->sk_state = TCP_CLOSE; | |
1da177e4 LT |
138 | sk->sk_shutdown |= SEND_SHUTDOWN; |
139 | ||
140 | sk->sk_state_change(sk); | |
1da177e4 LT |
141 | |
142 | /* Close our TSAP. | |
143 | * If we leave it open, IrLMP put it back into the list of | |
144 | * unconnected LSAPs. The problem is that any incoming request | |
145 | * can then be matched to this socket (and it will be, because | |
146 | * it is at the head of the list). This would prevent any | |
147 | * listening socket waiting on the same TSAP to get those | |
148 | * requests. Some apps forget to close sockets, or hang to it | |
149 | * a bit too long, so we may stay in this dead state long | |
150 | * enough to be noticed... | |
151 | * Note : all socket function do check sk->sk_state, so we are | |
152 | * safe... | |
153 | * Jean II | |
154 | */ | |
155 | if (self->tsap) { | |
156 | irttp_close_tsap(self->tsap); | |
157 | self->tsap = NULL; | |
158 | } | |
6819bc2e | 159 | } |
6e66aa15 | 160 | bh_unlock_sock(sk); |
1da177e4 LT |
161 | |
162 | /* Note : once we are there, there is not much you want to do | |
163 | * with the socket anymore, apart from closing it. | |
164 | * For example, bind() and connect() won't reset sk->sk_err, | |
165 | * sk->sk_shutdown and sk->sk_flags to valid values... | |
166 | * Jean II | |
167 | */ | |
168 | } | |
169 | ||
170 | /* | |
171 | * Function irda_connect_confirm (instance, sap, qos, max_sdu_size, skb) | |
172 | * | |
173 | * Connections has been confirmed by the remote device | |
174 | * | |
175 | */ | |
176 | static void irda_connect_confirm(void *instance, void *sap, | |
177 | struct qos_info *qos, | |
178 | __u32 max_sdu_size, __u8 max_header_size, | |
179 | struct sk_buff *skb) | |
180 | { | |
181 | struct irda_sock *self; | |
182 | struct sock *sk; | |
183 | ||
184 | self = instance; | |
185 | ||
0dc47877 | 186 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
187 | |
188 | sk = instance; | |
189 | if (sk == NULL) { | |
190 | dev_kfree_skb(skb); | |
191 | return; | |
192 | } | |
193 | ||
194 | dev_kfree_skb(skb); | |
195 | // Should be ??? skb_queue_tail(&sk->sk_receive_queue, skb); | |
196 | ||
197 | /* How much header space do we need to reserve */ | |
198 | self->max_header_size = max_header_size; | |
199 | ||
200 | /* IrTTP max SDU size in transmit direction */ | |
201 | self->max_sdu_size_tx = max_sdu_size; | |
202 | ||
203 | /* Find out what the largest chunk of data that we can transmit is */ | |
204 | switch (sk->sk_type) { | |
205 | case SOCK_STREAM: | |
206 | if (max_sdu_size != 0) { | |
207 | IRDA_ERROR("%s: max_sdu_size must be 0\n", | |
0dc47877 | 208 | __func__); |
1da177e4 LT |
209 | return; |
210 | } | |
211 | self->max_data_size = irttp_get_max_seg_size(self->tsap); | |
212 | break; | |
213 | case SOCK_SEQPACKET: | |
214 | if (max_sdu_size == 0) { | |
215 | IRDA_ERROR("%s: max_sdu_size cannot be 0\n", | |
0dc47877 | 216 | __func__); |
1da177e4 LT |
217 | return; |
218 | } | |
219 | self->max_data_size = max_sdu_size; | |
220 | break; | |
221 | default: | |
222 | self->max_data_size = irttp_get_max_seg_size(self->tsap); | |
3ff50b79 | 223 | } |
1da177e4 | 224 | |
0dc47877 | 225 | IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__, |
1da177e4 LT |
226 | self->max_data_size); |
227 | ||
228 | memcpy(&self->qos_tx, qos, sizeof(struct qos_info)); | |
229 | ||
230 | /* We are now connected! */ | |
231 | sk->sk_state = TCP_ESTABLISHED; | |
232 | sk->sk_state_change(sk); | |
233 | } | |
234 | ||
235 | /* | |
236 | * Function irda_connect_indication(instance, sap, qos, max_sdu_size, userdata) | |
237 | * | |
238 | * Incoming connection | |
239 | * | |
240 | */ | |
241 | static void irda_connect_indication(void *instance, void *sap, | |
242 | struct qos_info *qos, __u32 max_sdu_size, | |
243 | __u8 max_header_size, struct sk_buff *skb) | |
244 | { | |
245 | struct irda_sock *self; | |
246 | struct sock *sk; | |
247 | ||
248 | self = instance; | |
249 | ||
0dc47877 | 250 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
251 | |
252 | sk = instance; | |
253 | if (sk == NULL) { | |
254 | dev_kfree_skb(skb); | |
255 | return; | |
256 | } | |
257 | ||
258 | /* How much header space do we need to reserve */ | |
259 | self->max_header_size = max_header_size; | |
260 | ||
261 | /* IrTTP max SDU size in transmit direction */ | |
262 | self->max_sdu_size_tx = max_sdu_size; | |
263 | ||
264 | /* Find out what the largest chunk of data that we can transmit is */ | |
265 | switch (sk->sk_type) { | |
266 | case SOCK_STREAM: | |
267 | if (max_sdu_size != 0) { | |
268 | IRDA_ERROR("%s: max_sdu_size must be 0\n", | |
0dc47877 | 269 | __func__); |
1da177e4 LT |
270 | kfree_skb(skb); |
271 | return; | |
272 | } | |
273 | self->max_data_size = irttp_get_max_seg_size(self->tsap); | |
274 | break; | |
275 | case SOCK_SEQPACKET: | |
276 | if (max_sdu_size == 0) { | |
277 | IRDA_ERROR("%s: max_sdu_size cannot be 0\n", | |
0dc47877 | 278 | __func__); |
1da177e4 LT |
279 | kfree_skb(skb); |
280 | return; | |
281 | } | |
282 | self->max_data_size = max_sdu_size; | |
283 | break; | |
284 | default: | |
285 | self->max_data_size = irttp_get_max_seg_size(self->tsap); | |
3ff50b79 | 286 | } |
1da177e4 | 287 | |
0dc47877 | 288 | IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__, |
1da177e4 LT |
289 | self->max_data_size); |
290 | ||
291 | memcpy(&self->qos_tx, qos, sizeof(struct qos_info)); | |
292 | ||
293 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
294 | sk->sk_state_change(sk); | |
295 | } | |
296 | ||
297 | /* | |
298 | * Function irda_connect_response (handle) | |
299 | * | |
300 | * Accept incoming connection | |
301 | * | |
302 | */ | |
303 | static void irda_connect_response(struct irda_sock *self) | |
304 | { | |
305 | struct sk_buff *skb; | |
306 | ||
0dc47877 | 307 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 308 | |
1b0fee7d SO |
309 | skb = alloc_skb(TTP_MAX_HEADER + TTP_SAR_HEADER, |
310 | GFP_ATOMIC); | |
1da177e4 LT |
311 | if (skb == NULL) { |
312 | IRDA_DEBUG(0, "%s() Unable to allocate sk_buff!\n", | |
0dc47877 | 313 | __func__); |
1da177e4 LT |
314 | return; |
315 | } | |
316 | ||
317 | /* Reserve space for MUX_CONTROL and LAP header */ | |
318 | skb_reserve(skb, IRDA_MAX_HEADER); | |
319 | ||
320 | irttp_connect_response(self->tsap, self->max_sdu_size_rx, skb); | |
321 | } | |
322 | ||
323 | /* | |
324 | * Function irda_flow_indication (instance, sap, flow) | |
325 | * | |
326 | * Used by TinyTP to tell us if it can accept more data or not | |
327 | * | |
328 | */ | |
329 | static void irda_flow_indication(void *instance, void *sap, LOCAL_FLOW flow) | |
330 | { | |
331 | struct irda_sock *self; | |
332 | struct sock *sk; | |
333 | ||
0dc47877 | 334 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 LT |
335 | |
336 | self = instance; | |
337 | sk = instance; | |
c3ea9fa2 | 338 | BUG_ON(sk == NULL); |
1da177e4 LT |
339 | |
340 | switch (flow) { | |
341 | case FLOW_STOP: | |
342 | IRDA_DEBUG(1, "%s(), IrTTP wants us to slow down\n", | |
0dc47877 | 343 | __func__); |
1da177e4 LT |
344 | self->tx_flow = flow; |
345 | break; | |
346 | case FLOW_START: | |
347 | self->tx_flow = flow; | |
348 | IRDA_DEBUG(1, "%s(), IrTTP wants us to start again\n", | |
0dc47877 | 349 | __func__); |
aa395145 | 350 | wake_up_interruptible(sk_sleep(sk)); |
1da177e4 LT |
351 | break; |
352 | default: | |
0dc47877 | 353 | IRDA_DEBUG(0, "%s(), Unknown flow command!\n", __func__); |
1da177e4 LT |
354 | /* Unknown flow command, better stop */ |
355 | self->tx_flow = flow; | |
356 | break; | |
357 | } | |
358 | } | |
359 | ||
360 | /* | |
361 | * Function irda_getvalue_confirm (obj_id, value, priv) | |
362 | * | |
363 | * Got answer from remote LM-IAS, just pass object to requester... | |
364 | * | |
365 | * Note : duplicate from above, but we need our own version that | |
366 | * doesn't touch the dtsap_sel and save the full value structure... | |
367 | */ | |
368 | static void irda_getvalue_confirm(int result, __u16 obj_id, | |
369 | struct ias_value *value, void *priv) | |
370 | { | |
371 | struct irda_sock *self; | |
372 | ||
373 | self = (struct irda_sock *) priv; | |
374 | if (!self) { | |
0dc47877 | 375 | IRDA_WARNING("%s: lost myself!\n", __func__); |
1da177e4 LT |
376 | return; |
377 | } | |
378 | ||
0dc47877 | 379 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
380 | |
381 | /* We probably don't need to make any more queries */ | |
382 | iriap_close(self->iriap); | |
383 | self->iriap = NULL; | |
384 | ||
385 | /* Check if request succeeded */ | |
386 | if (result != IAS_SUCCESS) { | |
0dc47877 | 387 | IRDA_DEBUG(1, "%s(), IAS query failed! (%d)\n", __func__, |
1da177e4 LT |
388 | result); |
389 | ||
390 | self->errno = result; /* We really need it later */ | |
391 | ||
392 | /* Wake up any processes waiting for result */ | |
393 | wake_up_interruptible(&self->query_wait); | |
394 | ||
395 | return; | |
396 | } | |
397 | ||
398 | /* Pass the object to the caller (so the caller must delete it) */ | |
399 | self->ias_result = value; | |
400 | self->errno = 0; | |
401 | ||
402 | /* Wake up any processes waiting for result */ | |
403 | wake_up_interruptible(&self->query_wait); | |
404 | } | |
405 | ||
406 | /* | |
407 | * Function irda_selective_discovery_indication (discovery) | |
408 | * | |
409 | * Got a selective discovery indication from IrLMP. | |
410 | * | |
411 | * IrLMP is telling us that this node is new and matching our hint bit | |
412 | * filter. Wake up any process waiting for answer... | |
413 | */ | |
414 | static void irda_selective_discovery_indication(discinfo_t *discovery, | |
415 | DISCOVERY_MODE mode, | |
416 | void *priv) | |
417 | { | |
418 | struct irda_sock *self; | |
419 | ||
0dc47877 | 420 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 LT |
421 | |
422 | self = (struct irda_sock *) priv; | |
423 | if (!self) { | |
0dc47877 | 424 | IRDA_WARNING("%s: lost myself!\n", __func__); |
1da177e4 LT |
425 | return; |
426 | } | |
427 | ||
428 | /* Pass parameter to the caller */ | |
429 | self->cachedaddr = discovery->daddr; | |
430 | ||
431 | /* Wake up process if its waiting for device to be discovered */ | |
432 | wake_up_interruptible(&self->query_wait); | |
433 | } | |
434 | ||
435 | /* | |
436 | * Function irda_discovery_timeout (priv) | |
437 | * | |
438 | * Timeout in the selective discovery process | |
439 | * | |
440 | * We were waiting for a node to be discovered, but nothing has come up | |
441 | * so far. Wake up the user and tell him that we failed... | |
442 | */ | |
443 | static void irda_discovery_timeout(u_long priv) | |
444 | { | |
445 | struct irda_sock *self; | |
446 | ||
0dc47877 | 447 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 LT |
448 | |
449 | self = (struct irda_sock *) priv; | |
c3ea9fa2 | 450 | BUG_ON(self == NULL); |
1da177e4 LT |
451 | |
452 | /* Nothing for the caller */ | |
453 | self->cachelog = NULL; | |
454 | self->cachedaddr = 0; | |
455 | self->errno = -ETIME; | |
456 | ||
457 | /* Wake up process if its still waiting... */ | |
458 | wake_up_interruptible(&self->query_wait); | |
459 | } | |
460 | ||
461 | /* | |
462 | * Function irda_open_tsap (self) | |
463 | * | |
464 | * Open local Transport Service Access Point (TSAP) | |
465 | * | |
466 | */ | |
467 | static int irda_open_tsap(struct irda_sock *self, __u8 tsap_sel, char *name) | |
468 | { | |
469 | notify_t notify; | |
470 | ||
471 | if (self->tsap) { | |
0dc47877 | 472 | IRDA_WARNING("%s: busy!\n", __func__); |
1da177e4 LT |
473 | return -EBUSY; |
474 | } | |
475 | ||
476 | /* Initialize callbacks to be used by the IrDA stack */ | |
477 | irda_notify_init(¬ify); | |
478 | notify.connect_confirm = irda_connect_confirm; | |
479 | notify.connect_indication = irda_connect_indication; | |
480 | notify.disconnect_indication = irda_disconnect_indication; | |
481 | notify.data_indication = irda_data_indication; | |
482 | notify.udata_indication = irda_data_indication; | |
483 | notify.flow_indication = irda_flow_indication; | |
484 | notify.instance = self; | |
485 | strncpy(notify.name, name, NOTIFY_MAX_NAME); | |
486 | ||
487 | self->tsap = irttp_open_tsap(tsap_sel, DEFAULT_INITIAL_CREDIT, | |
488 | ¬ify); | |
489 | if (self->tsap == NULL) { | |
490 | IRDA_DEBUG(0, "%s(), Unable to allocate TSAP!\n", | |
0dc47877 | 491 | __func__); |
1da177e4 LT |
492 | return -ENOMEM; |
493 | } | |
494 | /* Remember which TSAP selector we actually got */ | |
495 | self->stsap_sel = self->tsap->stsap_sel; | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
500 | /* | |
501 | * Function irda_open_lsap (self) | |
502 | * | |
503 | * Open local Link Service Access Point (LSAP). Used for opening Ultra | |
504 | * sockets | |
505 | */ | |
506 | #ifdef CONFIG_IRDA_ULTRA | |
507 | static int irda_open_lsap(struct irda_sock *self, int pid) | |
508 | { | |
509 | notify_t notify; | |
510 | ||
511 | if (self->lsap) { | |
0dc47877 | 512 | IRDA_WARNING("%s(), busy!\n", __func__); |
1da177e4 LT |
513 | return -EBUSY; |
514 | } | |
515 | ||
516 | /* Initialize callbacks to be used by the IrDA stack */ | |
517 | irda_notify_init(¬ify); | |
518 | notify.udata_indication = irda_data_indication; | |
519 | notify.instance = self; | |
520 | strncpy(notify.name, "Ultra", NOTIFY_MAX_NAME); | |
521 | ||
522 | self->lsap = irlmp_open_lsap(LSAP_CONNLESS, ¬ify, pid); | |
523 | if (self->lsap == NULL) { | |
0dc47877 | 524 | IRDA_DEBUG( 0, "%s(), Unable to allocate LSAP!\n", __func__); |
1da177e4 LT |
525 | return -ENOMEM; |
526 | } | |
527 | ||
528 | return 0; | |
529 | } | |
530 | #endif /* CONFIG_IRDA_ULTRA */ | |
531 | ||
532 | /* | |
533 | * Function irda_find_lsap_sel (self, name) | |
534 | * | |
535 | * Try to lookup LSAP selector in remote LM-IAS | |
536 | * | |
537 | * Basically, we start a IAP query, and then go to sleep. When the query | |
538 | * return, irda_getvalue_confirm will wake us up, and we can examine the | |
539 | * result of the query... | |
540 | * Note that in some case, the query fail even before we go to sleep, | |
541 | * creating some races... | |
542 | */ | |
543 | static int irda_find_lsap_sel(struct irda_sock *self, char *name) | |
544 | { | |
0dc47877 | 545 | IRDA_DEBUG(2, "%s(%p, %s)\n", __func__, self, name); |
1da177e4 | 546 | |
1da177e4 LT |
547 | if (self->iriap) { |
548 | IRDA_WARNING("%s(): busy with a previous query\n", | |
0dc47877 | 549 | __func__); |
1da177e4 LT |
550 | return -EBUSY; |
551 | } | |
552 | ||
553 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, | |
554 | irda_getvalue_confirm); | |
555 | if(self->iriap == NULL) | |
556 | return -ENOMEM; | |
557 | ||
558 | /* Treat unexpected wakeup as disconnect */ | |
559 | self->errno = -EHOSTUNREACH; | |
560 | ||
561 | /* Query remote LM-IAS */ | |
562 | iriap_getvaluebyclass_request(self->iriap, self->saddr, self->daddr, | |
563 | name, "IrDA:TinyTP:LsapSel"); | |
564 | ||
565 | /* Wait for answer, if not yet finished (or failed) */ | |
566 | if (wait_event_interruptible(self->query_wait, (self->iriap==NULL))) | |
567 | /* Treat signals as disconnect */ | |
568 | return -EHOSTUNREACH; | |
569 | ||
570 | /* Check what happened */ | |
571 | if (self->errno) | |
572 | { | |
573 | /* Requested object/attribute doesn't exist */ | |
574 | if((self->errno == IAS_CLASS_UNKNOWN) || | |
575 | (self->errno == IAS_ATTRIB_UNKNOWN)) | |
576 | return (-EADDRNOTAVAIL); | |
577 | else | |
578 | return (-EHOSTUNREACH); | |
579 | } | |
580 | ||
581 | /* Get the remote TSAP selector */ | |
582 | switch (self->ias_result->type) { | |
583 | case IAS_INTEGER: | |
584 | IRDA_DEBUG(4, "%s() int=%d\n", | |
0dc47877 | 585 | __func__, self->ias_result->t.integer); |
1da177e4 LT |
586 | |
587 | if (self->ias_result->t.integer != -1) | |
588 | self->dtsap_sel = self->ias_result->t.integer; | |
589 | else | |
590 | self->dtsap_sel = 0; | |
591 | break; | |
592 | default: | |
593 | self->dtsap_sel = 0; | |
0dc47877 | 594 | IRDA_DEBUG(0, "%s(), bad type!\n", __func__); |
1da177e4 LT |
595 | break; |
596 | } | |
597 | if (self->ias_result) | |
598 | irias_delete_value(self->ias_result); | |
599 | ||
600 | if (self->dtsap_sel) | |
601 | return 0; | |
602 | ||
603 | return -EADDRNOTAVAIL; | |
604 | } | |
605 | ||
606 | /* | |
607 | * Function irda_discover_daddr_and_lsap_sel (self, name) | |
608 | * | |
609 | * This try to find a device with the requested service. | |
610 | * | |
611 | * It basically look into the discovery log. For each address in the list, | |
612 | * it queries the LM-IAS of the device to find if this device offer | |
613 | * the requested service. | |
614 | * If there is more than one node supporting the service, we complain | |
615 | * to the user (it should move devices around). | |
616 | * The, we set both the destination address and the lsap selector to point | |
617 | * on the service on the unique device we have found. | |
618 | * | |
619 | * Note : this function fails if there is more than one device in range, | |
620 | * because IrLMP doesn't disconnect the LAP when the last LSAP is closed. | |
621 | * Moreover, we would need to wait the LAP disconnection... | |
622 | */ | |
623 | static int irda_discover_daddr_and_lsap_sel(struct irda_sock *self, char *name) | |
624 | { | |
625 | discinfo_t *discoveries; /* Copy of the discovery log */ | |
626 | int number; /* Number of nodes in the log */ | |
627 | int i; | |
628 | int err = -ENETUNREACH; | |
629 | __u32 daddr = DEV_ADDR_ANY; /* Address we found the service on */ | |
630 | __u8 dtsap_sel = 0x0; /* TSAP associated with it */ | |
631 | ||
0dc47877 | 632 | IRDA_DEBUG(2, "%s(), name=%s\n", __func__, name); |
1da177e4 | 633 | |
1da177e4 LT |
634 | /* Ask lmp for the current discovery log |
635 | * Note : we have to use irlmp_get_discoveries(), as opposed | |
636 | * to play with the cachelog directly, because while we are | |
637 | * making our ias query, le log might change... */ | |
638 | discoveries = irlmp_get_discoveries(&number, self->mask.word, | |
639 | self->nslots); | |
640 | /* Check if the we got some results */ | |
641 | if (discoveries == NULL) | |
642 | return -ENETUNREACH; /* No nodes discovered */ | |
643 | ||
644 | /* | |
645 | * Now, check all discovered devices (if any), and connect | |
646 | * client only about the services that the client is | |
647 | * interested in... | |
648 | */ | |
649 | for(i = 0; i < number; i++) { | |
650 | /* Try the address in the log */ | |
651 | self->daddr = discoveries[i].daddr; | |
652 | self->saddr = 0x0; | |
653 | IRDA_DEBUG(1, "%s(), trying daddr = %08x\n", | |
0dc47877 | 654 | __func__, self->daddr); |
1da177e4 LT |
655 | |
656 | /* Query remote LM-IAS for this service */ | |
657 | err = irda_find_lsap_sel(self, name); | |
658 | switch (err) { | |
659 | case 0: | |
660 | /* We found the requested service */ | |
661 | if(daddr != DEV_ADDR_ANY) { | |
662 | IRDA_DEBUG(1, "%s(), discovered service ''%s'' in two different devices !!!\n", | |
0dc47877 | 663 | __func__, name); |
1da177e4 LT |
664 | self->daddr = DEV_ADDR_ANY; |
665 | kfree(discoveries); | |
666 | return(-ENOTUNIQ); | |
667 | } | |
668 | /* First time we found that one, save it ! */ | |
669 | daddr = self->daddr; | |
670 | dtsap_sel = self->dtsap_sel; | |
671 | break; | |
672 | case -EADDRNOTAVAIL: | |
673 | /* Requested service simply doesn't exist on this node */ | |
674 | break; | |
675 | default: | |
676 | /* Something bad did happen :-( */ | |
0dc47877 | 677 | IRDA_DEBUG(0, "%s(), unexpected IAS query failure\n", __func__); |
1da177e4 LT |
678 | self->daddr = DEV_ADDR_ANY; |
679 | kfree(discoveries); | |
680 | return(-EHOSTUNREACH); | |
681 | break; | |
682 | } | |
683 | } | |
684 | /* Cleanup our copy of the discovery log */ | |
685 | kfree(discoveries); | |
686 | ||
687 | /* Check out what we found */ | |
688 | if(daddr == DEV_ADDR_ANY) { | |
689 | IRDA_DEBUG(1, "%s(), cannot discover service ''%s'' in any device !!!\n", | |
0dc47877 | 690 | __func__, name); |
1da177e4 LT |
691 | self->daddr = DEV_ADDR_ANY; |
692 | return(-EADDRNOTAVAIL); | |
693 | } | |
694 | ||
695 | /* Revert back to discovered device & service */ | |
696 | self->daddr = daddr; | |
697 | self->saddr = 0x0; | |
698 | self->dtsap_sel = dtsap_sel; | |
699 | ||
700 | IRDA_DEBUG(1, "%s(), discovered requested service ''%s'' at address %08x\n", | |
0dc47877 | 701 | __func__, name, self->daddr); |
1da177e4 LT |
702 | |
703 | return 0; | |
704 | } | |
705 | ||
706 | /* | |
707 | * Function irda_getname (sock, uaddr, uaddr_len, peer) | |
708 | * | |
709 | * Return the our own, or peers socket address (sockaddr_irda) | |
710 | * | |
711 | */ | |
712 | static int irda_getname(struct socket *sock, struct sockaddr *uaddr, | |
713 | int *uaddr_len, int peer) | |
714 | { | |
715 | struct sockaddr_irda saddr; | |
716 | struct sock *sk = sock->sk; | |
717 | struct irda_sock *self = irda_sk(sk); | |
58a9d732 | 718 | int err; |
1da177e4 | 719 | |
58a9d732 | 720 | lock_kernel(); |
09384dfc | 721 | memset(&saddr, 0, sizeof(saddr)); |
1da177e4 | 722 | if (peer) { |
58a9d732 | 723 | err = -ENOTCONN; |
1da177e4 | 724 | if (sk->sk_state != TCP_ESTABLISHED) |
58a9d732 | 725 | goto out; |
1da177e4 LT |
726 | |
727 | saddr.sir_family = AF_IRDA; | |
728 | saddr.sir_lsap_sel = self->dtsap_sel; | |
729 | saddr.sir_addr = self->daddr; | |
730 | } else { | |
731 | saddr.sir_family = AF_IRDA; | |
732 | saddr.sir_lsap_sel = self->stsap_sel; | |
733 | saddr.sir_addr = self->saddr; | |
734 | } | |
735 | ||
0dc47877 HH |
736 | IRDA_DEBUG(1, "%s(), tsap_sel = %#x\n", __func__, saddr.sir_lsap_sel); |
737 | IRDA_DEBUG(1, "%s(), addr = %08x\n", __func__, saddr.sir_addr); | |
1da177e4 LT |
738 | |
739 | /* uaddr_len come to us uninitialised */ | |
740 | *uaddr_len = sizeof (struct sockaddr_irda); | |
741 | memcpy(uaddr, &saddr, *uaddr_len); | |
58a9d732 AB |
742 | err = 0; |
743 | out: | |
744 | unlock_kernel(); | |
745 | return err; | |
1da177e4 LT |
746 | } |
747 | ||
748 | /* | |
749 | * Function irda_listen (sock, backlog) | |
750 | * | |
751 | * Just move to the listen state | |
752 | * | |
753 | */ | |
754 | static int irda_listen(struct socket *sock, int backlog) | |
755 | { | |
756 | struct sock *sk = sock->sk; | |
58a9d732 | 757 | int err = -EOPNOTSUPP; |
1da177e4 | 758 | |
0dc47877 | 759 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 760 | |
58a9d732 | 761 | lock_kernel(); |
1da177e4 LT |
762 | if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) && |
763 | (sk->sk_type != SOCK_DGRAM)) | |
58a9d732 | 764 | goto out; |
1da177e4 LT |
765 | |
766 | if (sk->sk_state != TCP_LISTEN) { | |
767 | sk->sk_max_ack_backlog = backlog; | |
768 | sk->sk_state = TCP_LISTEN; | |
769 | ||
58a9d732 | 770 | err = 0; |
1da177e4 | 771 | } |
58a9d732 AB |
772 | out: |
773 | unlock_kernel(); | |
1da177e4 | 774 | |
58a9d732 | 775 | return err; |
1da177e4 LT |
776 | } |
777 | ||
778 | /* | |
779 | * Function irda_bind (sock, uaddr, addr_len) | |
780 | * | |
781 | * Used by servers to register their well known TSAP | |
782 | * | |
783 | */ | |
784 | static int irda_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
785 | { | |
786 | struct sock *sk = sock->sk; | |
787 | struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr; | |
788 | struct irda_sock *self = irda_sk(sk); | |
789 | int err; | |
790 | ||
0dc47877 | 791 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
792 | |
793 | if (addr_len != sizeof(struct sockaddr_irda)) | |
794 | return -EINVAL; | |
795 | ||
58a9d732 | 796 | lock_kernel(); |
1da177e4 LT |
797 | #ifdef CONFIG_IRDA_ULTRA |
798 | /* Special care for Ultra sockets */ | |
799 | if ((sk->sk_type == SOCK_DGRAM) && | |
800 | (sk->sk_protocol == IRDAPROTO_ULTRA)) { | |
801 | self->pid = addr->sir_lsap_sel; | |
58a9d732 | 802 | err = -EOPNOTSUPP; |
1da177e4 | 803 | if (self->pid & 0x80) { |
0dc47877 | 804 | IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__); |
58a9d732 | 805 | goto out; |
1da177e4 LT |
806 | } |
807 | err = irda_open_lsap(self, self->pid); | |
808 | if (err < 0) | |
58a9d732 | 809 | goto out; |
1da177e4 LT |
810 | |
811 | /* Pretend we are connected */ | |
812 | sock->state = SS_CONNECTED; | |
813 | sk->sk_state = TCP_ESTABLISHED; | |
58a9d732 | 814 | err = 0; |
1da177e4 | 815 | |
58a9d732 | 816 | goto out; |
1da177e4 LT |
817 | } |
818 | #endif /* CONFIG_IRDA_ULTRA */ | |
819 | ||
61e44b48 | 820 | self->ias_obj = irias_new_object(addr->sir_name, jiffies); |
58a9d732 | 821 | err = -ENOMEM; |
61e44b48 | 822 | if (self->ias_obj == NULL) |
58a9d732 | 823 | goto out; |
61e44b48 | 824 | |
1da177e4 | 825 | err = irda_open_tsap(self, addr->sir_lsap_sel, addr->sir_name); |
61e44b48 JJ |
826 | if (err < 0) { |
827 | kfree(self->ias_obj->name); | |
828 | kfree(self->ias_obj); | |
58a9d732 | 829 | goto out; |
61e44b48 | 830 | } |
1da177e4 LT |
831 | |
832 | /* Register with LM-IAS */ | |
1da177e4 LT |
833 | irias_add_integer_attrib(self->ias_obj, "IrDA:TinyTP:LsapSel", |
834 | self->stsap_sel, IAS_KERNEL_ATTR); | |
835 | irias_insert_object(self->ias_obj); | |
836 | ||
58a9d732 AB |
837 | err = 0; |
838 | out: | |
839 | unlock_kernel(); | |
840 | return err; | |
1da177e4 LT |
841 | } |
842 | ||
843 | /* | |
844 | * Function irda_accept (sock, newsock, flags) | |
845 | * | |
846 | * Wait for incoming connection | |
847 | * | |
848 | */ | |
849 | static int irda_accept(struct socket *sock, struct socket *newsock, int flags) | |
850 | { | |
851 | struct sock *sk = sock->sk; | |
852 | struct irda_sock *new, *self = irda_sk(sk); | |
853 | struct sock *newsk; | |
854 | struct sk_buff *skb; | |
855 | int err; | |
856 | ||
0dc47877 | 857 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 858 | |
58a9d732 | 859 | lock_kernel(); |
3f378b68 | 860 | err = irda_create(sock_net(sk), newsock, sk->sk_protocol, 0); |
1da177e4 | 861 | if (err) |
58a9d732 | 862 | goto out; |
1da177e4 | 863 | |
58a9d732 | 864 | err = -EINVAL; |
1da177e4 | 865 | if (sock->state != SS_UNCONNECTED) |
58a9d732 | 866 | goto out; |
1da177e4 LT |
867 | |
868 | if ((sk = sock->sk) == NULL) | |
58a9d732 | 869 | goto out; |
1da177e4 | 870 | |
58a9d732 | 871 | err = -EOPNOTSUPP; |
1da177e4 LT |
872 | if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) && |
873 | (sk->sk_type != SOCK_DGRAM)) | |
58a9d732 | 874 | goto out; |
1da177e4 | 875 | |
58a9d732 | 876 | err = -EINVAL; |
1da177e4 | 877 | if (sk->sk_state != TCP_LISTEN) |
58a9d732 | 878 | goto out; |
1da177e4 LT |
879 | |
880 | /* | |
881 | * The read queue this time is holding sockets ready to use | |
882 | * hooked into the SABM we saved | |
883 | */ | |
884 | ||
885 | /* | |
886 | * We can perform the accept only if there is incoming data | |
887 | * on the listening socket. | |
888 | * So, we will block the caller until we receive any data. | |
889 | * If the caller was waiting on select() or poll() before | |
890 | * calling us, the data is waiting for us ;-) | |
891 | * Jean II | |
892 | */ | |
d7f48d1a SO |
893 | while (1) { |
894 | skb = skb_dequeue(&sk->sk_receive_queue); | |
895 | if (skb) | |
896 | break; | |
1da177e4 LT |
897 | |
898 | /* Non blocking operation */ | |
58a9d732 | 899 | err = -EWOULDBLOCK; |
1da177e4 | 900 | if (flags & O_NONBLOCK) |
58a9d732 | 901 | goto out; |
1da177e4 | 902 | |
aa395145 | 903 | err = wait_event_interruptible(*(sk_sleep(sk)), |
d7f48d1a SO |
904 | skb_peek(&sk->sk_receive_queue)); |
905 | if (err) | |
58a9d732 | 906 | goto out; |
1da177e4 LT |
907 | } |
908 | ||
909 | newsk = newsock->sk; | |
58a9d732 | 910 | err = -EIO; |
c3ea9fa2 | 911 | if (newsk == NULL) |
58a9d732 | 912 | goto out; |
c3ea9fa2 | 913 | |
1da177e4 LT |
914 | newsk->sk_state = TCP_ESTABLISHED; |
915 | ||
916 | new = irda_sk(newsk); | |
1da177e4 LT |
917 | |
918 | /* Now attach up the new socket */ | |
919 | new->tsap = irttp_dup(self->tsap, new); | |
58a9d732 | 920 | err = -EPERM; /* value does not seem to make sense. -arnd */ |
1da177e4 | 921 | if (!new->tsap) { |
0dc47877 | 922 | IRDA_DEBUG(0, "%s(), dup failed!\n", __func__); |
1da177e4 | 923 | kfree_skb(skb); |
58a9d732 | 924 | goto out; |
1da177e4 LT |
925 | } |
926 | ||
927 | new->stsap_sel = new->tsap->stsap_sel; | |
928 | new->dtsap_sel = new->tsap->dtsap_sel; | |
929 | new->saddr = irttp_get_saddr(new->tsap); | |
930 | new->daddr = irttp_get_daddr(new->tsap); | |
931 | ||
932 | new->max_sdu_size_tx = self->max_sdu_size_tx; | |
933 | new->max_sdu_size_rx = self->max_sdu_size_rx; | |
934 | new->max_data_size = self->max_data_size; | |
935 | new->max_header_size = self->max_header_size; | |
936 | ||
937 | memcpy(&new->qos_tx, &self->qos_tx, sizeof(struct qos_info)); | |
938 | ||
939 | /* Clean up the original one to keep it in listen state */ | |
940 | irttp_listen(self->tsap); | |
941 | ||
1da177e4 LT |
942 | kfree_skb(skb); |
943 | sk->sk_ack_backlog--; | |
944 | ||
945 | newsock->state = SS_CONNECTED; | |
946 | ||
947 | irda_connect_response(new); | |
58a9d732 AB |
948 | err = 0; |
949 | out: | |
950 | unlock_kernel(); | |
951 | return err; | |
1da177e4 LT |
952 | } |
953 | ||
954 | /* | |
955 | * Function irda_connect (sock, uaddr, addr_len, flags) | |
956 | * | |
957 | * Connect to a IrDA device | |
958 | * | |
959 | * The main difference with a "standard" connect is that with IrDA we need | |
960 | * to resolve the service name into a TSAP selector (in TCP, port number | |
961 | * doesn't have to be resolved). | |
962 | * Because of this service name resoltion, we can offer "auto-connect", | |
963 | * where we connect to a service without specifying a destination address. | |
964 | * | |
965 | * Note : by consulting "errno", the user space caller may learn the cause | |
966 | * of the failure. Most of them are visible in the function, others may come | |
967 | * from subroutines called and are listed here : | |
968 | * o EBUSY : already processing a connect | |
969 | * o EHOSTUNREACH : bad addr->sir_addr argument | |
970 | * o EADDRNOTAVAIL : bad addr->sir_name argument | |
971 | * o ENOTUNIQ : more than one node has addr->sir_name (auto-connect) | |
972 | * o ENETUNREACH : no node found on the network (auto-connect) | |
973 | */ | |
974 | static int irda_connect(struct socket *sock, struct sockaddr *uaddr, | |
975 | int addr_len, int flags) | |
976 | { | |
977 | struct sock *sk = sock->sk; | |
978 | struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr; | |
979 | struct irda_sock *self = irda_sk(sk); | |
980 | int err; | |
981 | ||
0dc47877 | 982 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 | 983 | |
58a9d732 | 984 | lock_kernel(); |
1da177e4 | 985 | /* Don't allow connect for Ultra sockets */ |
58a9d732 | 986 | err = -ESOCKTNOSUPPORT; |
1da177e4 | 987 | if ((sk->sk_type == SOCK_DGRAM) && (sk->sk_protocol == IRDAPROTO_ULTRA)) |
58a9d732 | 988 | goto out; |
1da177e4 LT |
989 | |
990 | if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { | |
991 | sock->state = SS_CONNECTED; | |
58a9d732 AB |
992 | err = 0; |
993 | goto out; /* Connect completed during a ERESTARTSYS event */ | |
1da177e4 LT |
994 | } |
995 | ||
996 | if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { | |
997 | sock->state = SS_UNCONNECTED; | |
58a9d732 AB |
998 | err = -ECONNREFUSED; |
999 | goto out; | |
1da177e4 LT |
1000 | } |
1001 | ||
58a9d732 | 1002 | err = -EISCONN; /* No reconnect on a seqpacket socket */ |
1da177e4 | 1003 | if (sk->sk_state == TCP_ESTABLISHED) |
58a9d732 | 1004 | goto out; |
1da177e4 LT |
1005 | |
1006 | sk->sk_state = TCP_CLOSE; | |
1007 | sock->state = SS_UNCONNECTED; | |
1008 | ||
58a9d732 | 1009 | err = -EINVAL; |
1da177e4 | 1010 | if (addr_len != sizeof(struct sockaddr_irda)) |
58a9d732 | 1011 | goto out; |
1da177e4 LT |
1012 | |
1013 | /* Check if user supplied any destination device address */ | |
1014 | if ((!addr->sir_addr) || (addr->sir_addr == DEV_ADDR_ANY)) { | |
1015 | /* Try to find one suitable */ | |
1016 | err = irda_discover_daddr_and_lsap_sel(self, addr->sir_name); | |
1017 | if (err) { | |
0dc47877 | 1018 | IRDA_DEBUG(0, "%s(), auto-connect failed!\n", __func__); |
58a9d732 | 1019 | goto out; |
1da177e4 LT |
1020 | } |
1021 | } else { | |
1022 | /* Use the one provided by the user */ | |
1023 | self->daddr = addr->sir_addr; | |
0dc47877 | 1024 | IRDA_DEBUG(1, "%s(), daddr = %08x\n", __func__, self->daddr); |
1da177e4 LT |
1025 | |
1026 | /* If we don't have a valid service name, we assume the | |
1027 | * user want to connect on a specific LSAP. Prevent | |
1028 | * the use of invalid LSAPs (IrLMP 1.1 p10). Jean II */ | |
1029 | if((addr->sir_name[0] != '\0') || | |
1030 | (addr->sir_lsap_sel >= 0x70)) { | |
1031 | /* Query remote LM-IAS using service name */ | |
1032 | err = irda_find_lsap_sel(self, addr->sir_name); | |
1033 | if (err) { | |
0dc47877 | 1034 | IRDA_DEBUG(0, "%s(), connect failed!\n", __func__); |
58a9d732 | 1035 | goto out; |
1da177e4 LT |
1036 | } |
1037 | } else { | |
1038 | /* Directly connect to the remote LSAP | |
1039 | * specified by the sir_lsap field. | |
1040 | * Please use with caution, in IrDA LSAPs are | |
1041 | * dynamic and there is no "well-known" LSAP. */ | |
1042 | self->dtsap_sel = addr->sir_lsap_sel; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | /* Check if we have opened a local TSAP */ | |
1047 | if (!self->tsap) | |
1048 | irda_open_tsap(self, LSAP_ANY, addr->sir_name); | |
1049 | ||
1050 | /* Move to connecting socket, start sending Connect Requests */ | |
1051 | sock->state = SS_CONNECTING; | |
1052 | sk->sk_state = TCP_SYN_SENT; | |
1053 | ||
1054 | /* Connect to remote device */ | |
1055 | err = irttp_connect_request(self->tsap, self->dtsap_sel, | |
1056 | self->saddr, self->daddr, NULL, | |
1057 | self->max_sdu_size_rx, NULL); | |
1058 | if (err) { | |
0dc47877 | 1059 | IRDA_DEBUG(0, "%s(), connect failed!\n", __func__); |
58a9d732 | 1060 | goto out; |
1da177e4 LT |
1061 | } |
1062 | ||
1063 | /* Now the loop */ | |
58a9d732 | 1064 | err = -EINPROGRESS; |
1da177e4 | 1065 | if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) |
58a9d732 | 1066 | goto out; |
1da177e4 | 1067 | |
58a9d732 | 1068 | err = -ERESTARTSYS; |
aa395145 | 1069 | if (wait_event_interruptible(*(sk_sleep(sk)), |
1da177e4 | 1070 | (sk->sk_state != TCP_SYN_SENT))) |
58a9d732 | 1071 | goto out; |
1da177e4 LT |
1072 | |
1073 | if (sk->sk_state != TCP_ESTABLISHED) { | |
1074 | sock->state = SS_UNCONNECTED; | |
6e66aa15 | 1075 | err = sock_error(sk); |
58a9d732 AB |
1076 | if (!err) |
1077 | err = -ECONNRESET; | |
1078 | goto out; | |
1da177e4 LT |
1079 | } |
1080 | ||
1081 | sock->state = SS_CONNECTED; | |
1082 | ||
1083 | /* At this point, IrLMP has assigned our source address */ | |
1084 | self->saddr = irttp_get_saddr(self->tsap); | |
58a9d732 AB |
1085 | err = 0; |
1086 | out: | |
1087 | unlock_kernel(); | |
1088 | return err; | |
1da177e4 LT |
1089 | } |
1090 | ||
1091 | static struct proto irda_proto = { | |
1092 | .name = "IRDA", | |
1093 | .owner = THIS_MODULE, | |
1094 | .obj_size = sizeof(struct irda_sock), | |
1095 | }; | |
1096 | ||
1097 | /* | |
1098 | * Function irda_create (sock, protocol) | |
1099 | * | |
1100 | * Create IrDA socket | |
1101 | * | |
1102 | */ | |
3f378b68 EP |
1103 | static int irda_create(struct net *net, struct socket *sock, int protocol, |
1104 | int kern) | |
1da177e4 LT |
1105 | { |
1106 | struct sock *sk; | |
1107 | struct irda_sock *self; | |
1108 | ||
0dc47877 | 1109 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 1110 | |
1b8d7ae4 EB |
1111 | if (net != &init_net) |
1112 | return -EAFNOSUPPORT; | |
1113 | ||
1da177e4 LT |
1114 | /* Check for valid socket type */ |
1115 | switch (sock->type) { | |
1116 | case SOCK_STREAM: /* For TTP connections with SAR disabled */ | |
1117 | case SOCK_SEQPACKET: /* For TTP connections with SAR enabled */ | |
1118 | case SOCK_DGRAM: /* For TTP Unitdata or LMP Ultra transfers */ | |
1119 | break; | |
1120 | default: | |
1121 | return -ESOCKTNOSUPPORT; | |
1122 | } | |
1123 | ||
1124 | /* Allocate networking socket */ | |
6257ff21 | 1125 | sk = sk_alloc(net, PF_IRDA, GFP_ATOMIC, &irda_proto); |
1da177e4 LT |
1126 | if (sk == NULL) |
1127 | return -ENOMEM; | |
1128 | ||
1129 | self = irda_sk(sk); | |
0dc47877 | 1130 | IRDA_DEBUG(2, "%s() : self is %p\n", __func__, self); |
1da177e4 LT |
1131 | |
1132 | init_waitqueue_head(&self->query_wait); | |
1133 | ||
1da177e4 LT |
1134 | switch (sock->type) { |
1135 | case SOCK_STREAM: | |
1136 | sock->ops = &irda_stream_ops; | |
1137 | self->max_sdu_size_rx = TTP_SAR_DISABLE; | |
1138 | break; | |
1139 | case SOCK_SEQPACKET: | |
1140 | sock->ops = &irda_seqpacket_ops; | |
1141 | self->max_sdu_size_rx = TTP_SAR_UNBOUND; | |
1142 | break; | |
1143 | case SOCK_DGRAM: | |
1144 | switch (protocol) { | |
1145 | #ifdef CONFIG_IRDA_ULTRA | |
1146 | case IRDAPROTO_ULTRA: | |
1147 | sock->ops = &irda_ultra_ops; | |
1148 | /* Initialise now, because we may send on unbound | |
1149 | * sockets. Jean II */ | |
1150 | self->max_data_size = ULTRA_MAX_DATA - LMP_PID_HEADER; | |
1151 | self->max_header_size = IRDA_MAX_HEADER + LMP_PID_HEADER; | |
1152 | break; | |
1153 | #endif /* CONFIG_IRDA_ULTRA */ | |
1154 | case IRDAPROTO_UNITDATA: | |
1155 | sock->ops = &irda_dgram_ops; | |
1156 | /* We let Unitdata conn. be like seqpack conn. */ | |
1157 | self->max_sdu_size_rx = TTP_SAR_UNBOUND; | |
1158 | break; | |
1159 | default: | |
9ecad877 | 1160 | sk_free(sk); |
1da177e4 LT |
1161 | return -ESOCKTNOSUPPORT; |
1162 | } | |
1163 | break; | |
1164 | default: | |
9ecad877 | 1165 | sk_free(sk); |
1da177e4 LT |
1166 | return -ESOCKTNOSUPPORT; |
1167 | } | |
1168 | ||
9ecad877 PE |
1169 | /* Initialise networking socket struct */ |
1170 | sock_init_data(sock, sk); /* Note : set sk->sk_refcnt to 1 */ | |
1171 | sk->sk_family = PF_IRDA; | |
1172 | sk->sk_protocol = protocol; | |
1173 | ||
1da177e4 LT |
1174 | /* Register as a client with IrLMP */ |
1175 | self->ckey = irlmp_register_client(0, NULL, NULL, NULL); | |
1176 | self->mask.word = 0xffff; | |
1177 | self->rx_flow = self->tx_flow = FLOW_START; | |
1178 | self->nslots = DISCOVERY_DEFAULT_SLOTS; | |
1179 | self->daddr = DEV_ADDR_ANY; /* Until we get connected */ | |
1180 | self->saddr = 0x0; /* so IrLMP assign us any link */ | |
1181 | return 0; | |
1182 | } | |
1183 | ||
1184 | /* | |
1185 | * Function irda_destroy_socket (self) | |
1186 | * | |
1187 | * Destroy socket | |
1188 | * | |
1189 | */ | |
1190 | static void irda_destroy_socket(struct irda_sock *self) | |
1191 | { | |
0dc47877 | 1192 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 | 1193 | |
1da177e4 LT |
1194 | /* Unregister with IrLMP */ |
1195 | irlmp_unregister_client(self->ckey); | |
1196 | irlmp_unregister_service(self->skey); | |
1197 | ||
1198 | /* Unregister with LM-IAS */ | |
1199 | if (self->ias_obj) { | |
1200 | irias_delete_object(self->ias_obj); | |
1201 | self->ias_obj = NULL; | |
1202 | } | |
1203 | ||
1204 | if (self->iriap) { | |
1205 | iriap_close(self->iriap); | |
1206 | self->iriap = NULL; | |
1207 | } | |
1208 | ||
1209 | if (self->tsap) { | |
1210 | irttp_disconnect_request(self->tsap, NULL, P_NORMAL); | |
1211 | irttp_close_tsap(self->tsap); | |
1212 | self->tsap = NULL; | |
1213 | } | |
1214 | #ifdef CONFIG_IRDA_ULTRA | |
1215 | if (self->lsap) { | |
1216 | irlmp_close_lsap(self->lsap); | |
1217 | self->lsap = NULL; | |
1218 | } | |
1219 | #endif /* CONFIG_IRDA_ULTRA */ | |
1220 | } | |
1221 | ||
1222 | /* | |
1223 | * Function irda_release (sock) | |
1224 | */ | |
1225 | static int irda_release(struct socket *sock) | |
1226 | { | |
1227 | struct sock *sk = sock->sk; | |
1228 | ||
0dc47877 | 1229 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 1230 | |
6819bc2e | 1231 | if (sk == NULL) |
1da177e4 LT |
1232 | return 0; |
1233 | ||
58a9d732 | 1234 | lock_kernel(); |
da349f1c | 1235 | lock_sock(sk); |
1da177e4 LT |
1236 | sk->sk_state = TCP_CLOSE; |
1237 | sk->sk_shutdown |= SEND_SHUTDOWN; | |
1238 | sk->sk_state_change(sk); | |
1239 | ||
1240 | /* Destroy IrDA socket */ | |
1241 | irda_destroy_socket(irda_sk(sk)); | |
1242 | ||
1243 | sock_orphan(sk); | |
1244 | sock->sk = NULL; | |
da349f1c | 1245 | release_sock(sk); |
1da177e4 LT |
1246 | |
1247 | /* Purge queues (see sock_init_data()) */ | |
1248 | skb_queue_purge(&sk->sk_receive_queue); | |
1249 | ||
1250 | /* Destroy networking socket if we are the last reference on it, | |
1251 | * i.e. if(sk->sk_refcnt == 0) -> sk_free(sk) */ | |
1252 | sock_put(sk); | |
58a9d732 | 1253 | unlock_kernel(); |
1da177e4 LT |
1254 | |
1255 | /* Notes on socket locking and deallocation... - Jean II | |
1256 | * In theory we should put pairs of sock_hold() / sock_put() to | |
1257 | * prevent the socket to be destroyed whenever there is an | |
1258 | * outstanding request or outstanding incoming packet or event. | |
1259 | * | |
1260 | * 1) This may include IAS request, both in connect and getsockopt. | |
1261 | * Unfortunately, the situation is a bit more messy than it looks, | |
1262 | * because we close iriap and kfree(self) above. | |
1263 | * | |
1264 | * 2) This may include selective discovery in getsockopt. | |
1265 | * Same stuff as above, irlmp registration and self are gone. | |
1266 | * | |
1267 | * Probably 1 and 2 may not matter, because it's all triggered | |
1268 | * by a process and the socket layer already prevent the | |
1269 | * socket to go away while a process is holding it, through | |
1270 | * sockfd_put() and fput()... | |
1271 | * | |
1272 | * 3) This may include deferred TSAP closure. In particular, | |
1273 | * we may receive a late irda_disconnect_indication() | |
1274 | * Fortunately, (tsap_cb *)->close_pend should protect us | |
1275 | * from that. | |
1276 | * | |
1277 | * I did some testing on SMP, and it looks solid. And the socket | |
1278 | * memory leak is now gone... - Jean II | |
1279 | */ | |
1280 | ||
6819bc2e | 1281 | return 0; |
1da177e4 LT |
1282 | } |
1283 | ||
1284 | /* | |
1285 | * Function irda_sendmsg (iocb, sock, msg, len) | |
1286 | * | |
1287 | * Send message down to TinyTP. This function is used for both STREAM and | |
1288 | * SEQPACK services. This is possible since it forces the client to | |
1289 | * fragment the message if necessary | |
1290 | */ | |
1291 | static int irda_sendmsg(struct kiocb *iocb, struct socket *sock, | |
1292 | struct msghdr *msg, size_t len) | |
1293 | { | |
1294 | struct sock *sk = sock->sk; | |
1295 | struct irda_sock *self; | |
1296 | struct sk_buff *skb; | |
bcb5e0ee | 1297 | int err = -EPIPE; |
1da177e4 | 1298 | |
0dc47877 | 1299 | IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len); |
1da177e4 | 1300 | |
58a9d732 | 1301 | lock_kernel(); |
1da177e4 | 1302 | /* Note : socket.c set MSG_EOR on SEQPACKET sockets */ |
bcb5e0ee | 1303 | if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_EOR | MSG_CMSG_COMPAT | |
58a9d732 AB |
1304 | MSG_NOSIGNAL)) { |
1305 | err = -EINVAL; | |
1306 | goto out; | |
1307 | } | |
1da177e4 | 1308 | |
bcb5e0ee SO |
1309 | if (sk->sk_shutdown & SEND_SHUTDOWN) |
1310 | goto out_err; | |
1da177e4 | 1311 | |
58a9d732 AB |
1312 | if (sk->sk_state != TCP_ESTABLISHED) { |
1313 | err = -ENOTCONN; | |
1314 | goto out; | |
1315 | } | |
1da177e4 LT |
1316 | |
1317 | self = irda_sk(sk); | |
1da177e4 LT |
1318 | |
1319 | /* Check if IrTTP is wants us to slow down */ | |
1320 | ||
aa395145 | 1321 | if (wait_event_interruptible(*(sk_sleep(sk)), |
58a9d732 AB |
1322 | (self->tx_flow != FLOW_STOP || sk->sk_state != TCP_ESTABLISHED))) { |
1323 | err = -ERESTARTSYS; | |
1324 | goto out; | |
1325 | } | |
1da177e4 LT |
1326 | |
1327 | /* Check if we are still connected */ | |
58a9d732 AB |
1328 | if (sk->sk_state != TCP_ESTABLISHED) { |
1329 | err = -ENOTCONN; | |
1330 | goto out; | |
1331 | } | |
1da177e4 | 1332 | |
7f927fcc | 1333 | /* Check that we don't send out too big frames */ |
1da177e4 LT |
1334 | if (len > self->max_data_size) { |
1335 | IRDA_DEBUG(2, "%s(), Chopping frame from %zd to %d bytes!\n", | |
0dc47877 | 1336 | __func__, len, self->max_data_size); |
1da177e4 LT |
1337 | len = self->max_data_size; |
1338 | } | |
1339 | ||
6819bc2e | 1340 | skb = sock_alloc_send_skb(sk, len + self->max_header_size + 16, |
1da177e4 LT |
1341 | msg->msg_flags & MSG_DONTWAIT, &err); |
1342 | if (!skb) | |
bcb5e0ee | 1343 | goto out_err; |
1da177e4 LT |
1344 | |
1345 | skb_reserve(skb, self->max_header_size + 16); | |
eeeb0374 ACM |
1346 | skb_reset_transport_header(skb); |
1347 | skb_put(skb, len); | |
1348 | err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len); | |
1da177e4 LT |
1349 | if (err) { |
1350 | kfree_skb(skb); | |
bcb5e0ee | 1351 | goto out_err; |
1da177e4 LT |
1352 | } |
1353 | ||
1354 | /* | |
1355 | * Just send the message to TinyTP, and let it deal with possible | |
1356 | * errors. No need to duplicate all that here | |
1357 | */ | |
1358 | err = irttp_data_request(self->tsap, skb); | |
1359 | if (err) { | |
0dc47877 | 1360 | IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err); |
bcb5e0ee | 1361 | goto out_err; |
1da177e4 | 1362 | } |
58a9d732 AB |
1363 | |
1364 | unlock_kernel(); | |
1da177e4 LT |
1365 | /* Tell client how much data we actually sent */ |
1366 | return len; | |
bcb5e0ee | 1367 | |
58a9d732 AB |
1368 | out_err: |
1369 | err = sk_stream_error(sk, msg->msg_flags, err); | |
1370 | out: | |
1371 | unlock_kernel(); | |
1372 | return err; | |
bcb5e0ee | 1373 | |
1da177e4 LT |
1374 | } |
1375 | ||
1376 | /* | |
1377 | * Function irda_recvmsg_dgram (iocb, sock, msg, size, flags) | |
1378 | * | |
1379 | * Try to receive message and copy it to user. The frame is discarded | |
1380 | * after being read, regardless of how much the user actually read | |
1381 | */ | |
1382 | static int irda_recvmsg_dgram(struct kiocb *iocb, struct socket *sock, | |
1383 | struct msghdr *msg, size_t size, int flags) | |
1384 | { | |
1385 | struct sock *sk = sock->sk; | |
1386 | struct irda_sock *self = irda_sk(sk); | |
1387 | struct sk_buff *skb; | |
1388 | size_t copied; | |
1389 | int err; | |
1390 | ||
0dc47877 | 1391 | IRDA_DEBUG(4, "%s()\n", __func__); |
1da177e4 | 1392 | |
58a9d732 | 1393 | lock_kernel(); |
6e66aa15 | 1394 | if ((err = sock_error(sk)) < 0) |
58a9d732 | 1395 | goto out; |
1da177e4 LT |
1396 | |
1397 | skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, | |
1398 | flags & MSG_DONTWAIT, &err); | |
1399 | if (!skb) | |
58a9d732 | 1400 | goto out; |
1da177e4 | 1401 | |
badff6d0 ACM |
1402 | skb_reset_transport_header(skb); |
1403 | copied = skb->len; | |
1da177e4 LT |
1404 | |
1405 | if (copied > size) { | |
1406 | IRDA_DEBUG(2, "%s(), Received truncated frame (%zd < %zd)!\n", | |
0dc47877 | 1407 | __func__, copied, size); |
1da177e4 LT |
1408 | copied = size; |
1409 | msg->msg_flags |= MSG_TRUNC; | |
1410 | } | |
1411 | skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
1412 | ||
1413 | skb_free_datagram(sk, skb); | |
1414 | ||
1415 | /* | |
1416 | * Check if we have previously stopped IrTTP and we know | |
1417 | * have more free space in our rx_queue. If so tell IrTTP | |
1418 | * to start delivering frames again before our rx_queue gets | |
1419 | * empty | |
1420 | */ | |
1421 | if (self->rx_flow == FLOW_STOP) { | |
1422 | if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) { | |
0dc47877 | 1423 | IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__); |
1da177e4 LT |
1424 | self->rx_flow = FLOW_START; |
1425 | irttp_flow_request(self->tsap, FLOW_START); | |
1426 | } | |
1427 | } | |
58a9d732 | 1428 | unlock_kernel(); |
1da177e4 | 1429 | return copied; |
58a9d732 AB |
1430 | |
1431 | out: | |
1432 | unlock_kernel(); | |
1433 | return err; | |
1da177e4 LT |
1434 | } |
1435 | ||
1436 | /* | |
1437 | * Function irda_recvmsg_stream (iocb, sock, msg, size, flags) | |
1438 | */ | |
1439 | static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock, | |
1440 | struct msghdr *msg, size_t size, int flags) | |
1441 | { | |
1442 | struct sock *sk = sock->sk; | |
1443 | struct irda_sock *self = irda_sk(sk); | |
1444 | int noblock = flags & MSG_DONTWAIT; | |
1445 | size_t copied = 0; | |
6e66aa15 | 1446 | int target, err; |
305f2aa1 | 1447 | long timeo; |
1da177e4 | 1448 | |
0dc47877 | 1449 | IRDA_DEBUG(3, "%s()\n", __func__); |
1da177e4 | 1450 | |
58a9d732 | 1451 | lock_kernel(); |
6e66aa15 | 1452 | if ((err = sock_error(sk)) < 0) |
58a9d732 | 1453 | goto out; |
1da177e4 | 1454 | |
58a9d732 | 1455 | err = -EINVAL; |
1da177e4 | 1456 | if (sock->flags & __SO_ACCEPTCON) |
58a9d732 | 1457 | goto out; |
1da177e4 | 1458 | |
58a9d732 | 1459 | err =-EOPNOTSUPP; |
1da177e4 | 1460 | if (flags & MSG_OOB) |
58a9d732 | 1461 | goto out; |
1da177e4 | 1462 | |
58a9d732 | 1463 | err = 0; |
305f2aa1 OK |
1464 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); |
1465 | timeo = sock_rcvtimeo(sk, noblock); | |
1da177e4 LT |
1466 | |
1467 | msg->msg_namelen = 0; | |
1468 | ||
1469 | do { | |
1470 | int chunk; | |
1471 | struct sk_buff *skb = skb_dequeue(&sk->sk_receive_queue); | |
1472 | ||
305f2aa1 OK |
1473 | if (skb == NULL) { |
1474 | DEFINE_WAIT(wait); | |
58a9d732 | 1475 | err = 0; |
1da177e4 LT |
1476 | |
1477 | if (copied >= target) | |
1478 | break; | |
1479 | ||
aa395145 | 1480 | prepare_to_wait_exclusive(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4 LT |
1481 | |
1482 | /* | |
1483 | * POSIX 1003.1g mandates this order. | |
1484 | */ | |
58a9d732 AB |
1485 | err = sock_error(sk); |
1486 | if (err) | |
bfb6709d | 1487 | ; |
1da177e4 LT |
1488 | else if (sk->sk_shutdown & RCV_SHUTDOWN) |
1489 | ; | |
1490 | else if (noblock) | |
58a9d732 | 1491 | err = -EAGAIN; |
1da177e4 | 1492 | else if (signal_pending(current)) |
58a9d732 | 1493 | err = sock_intr_errno(timeo); |
305f2aa1 | 1494 | else if (sk->sk_state != TCP_ESTABLISHED) |
58a9d732 | 1495 | err = -ENOTCONN; |
1da177e4 LT |
1496 | else if (skb_peek(&sk->sk_receive_queue) == NULL) |
1497 | /* Wait process until data arrives */ | |
1498 | schedule(); | |
1499 | ||
aa395145 | 1500 | finish_wait(sk_sleep(sk), &wait); |
1da177e4 | 1501 | |
58a9d732 AB |
1502 | if (err) |
1503 | goto out; | |
1da177e4 LT |
1504 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
1505 | break; | |
1506 | ||
1507 | continue; | |
1508 | } | |
1509 | ||
1510 | chunk = min_t(unsigned int, skb->len, size); | |
1511 | if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) { | |
1512 | skb_queue_head(&sk->sk_receive_queue, skb); | |
1513 | if (copied == 0) | |
1514 | copied = -EFAULT; | |
1515 | break; | |
1516 | } | |
1517 | copied += chunk; | |
1518 | size -= chunk; | |
1519 | ||
1520 | /* Mark read part of skb as used */ | |
1521 | if (!(flags & MSG_PEEK)) { | |
1522 | skb_pull(skb, chunk); | |
1523 | ||
1524 | /* put the skb back if we didn't use it up.. */ | |
1525 | if (skb->len) { | |
1526 | IRDA_DEBUG(1, "%s(), back on q!\n", | |
0dc47877 | 1527 | __func__); |
1da177e4 LT |
1528 | skb_queue_head(&sk->sk_receive_queue, skb); |
1529 | break; | |
1530 | } | |
1531 | ||
1532 | kfree_skb(skb); | |
1533 | } else { | |
0dc47877 | 1534 | IRDA_DEBUG(0, "%s() questionable!?\n", __func__); |
1da177e4 LT |
1535 | |
1536 | /* put message back and return */ | |
1537 | skb_queue_head(&sk->sk_receive_queue, skb); | |
1538 | break; | |
1539 | } | |
1540 | } while (size); | |
1541 | ||
1542 | /* | |
1543 | * Check if we have previously stopped IrTTP and we know | |
1544 | * have more free space in our rx_queue. If so tell IrTTP | |
1545 | * to start delivering frames again before our rx_queue gets | |
1546 | * empty | |
1547 | */ | |
1548 | if (self->rx_flow == FLOW_STOP) { | |
1549 | if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) { | |
0dc47877 | 1550 | IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__); |
1da177e4 LT |
1551 | self->rx_flow = FLOW_START; |
1552 | irttp_flow_request(self->tsap, FLOW_START); | |
1553 | } | |
1554 | } | |
1555 | ||
58a9d732 AB |
1556 | out: |
1557 | unlock_kernel(); | |
1558 | return err ? : copied; | |
1da177e4 LT |
1559 | } |
1560 | ||
1561 | /* | |
1562 | * Function irda_sendmsg_dgram (iocb, sock, msg, len) | |
1563 | * | |
1564 | * Send message down to TinyTP for the unreliable sequenced | |
1565 | * packet service... | |
1566 | * | |
1567 | */ | |
1568 | static int irda_sendmsg_dgram(struct kiocb *iocb, struct socket *sock, | |
1569 | struct msghdr *msg, size_t len) | |
1570 | { | |
1571 | struct sock *sk = sock->sk; | |
1572 | struct irda_sock *self; | |
1573 | struct sk_buff *skb; | |
1da177e4 LT |
1574 | int err; |
1575 | ||
58a9d732 AB |
1576 | lock_kernel(); |
1577 | ||
0dc47877 | 1578 | IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len); |
1da177e4 | 1579 | |
58a9d732 | 1580 | err = -EINVAL; |
1da177e4 | 1581 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT)) |
58a9d732 | 1582 | goto out; |
1da177e4 LT |
1583 | |
1584 | if (sk->sk_shutdown & SEND_SHUTDOWN) { | |
1585 | send_sig(SIGPIPE, current, 0); | |
58a9d732 AB |
1586 | err = -EPIPE; |
1587 | goto out; | |
1da177e4 LT |
1588 | } |
1589 | ||
58a9d732 | 1590 | err = -ENOTCONN; |
1da177e4 | 1591 | if (sk->sk_state != TCP_ESTABLISHED) |
58a9d732 | 1592 | goto out; |
1da177e4 LT |
1593 | |
1594 | self = irda_sk(sk); | |
1da177e4 LT |
1595 | |
1596 | /* | |
7f927fcc | 1597 | * Check that we don't send out too big frames. This is an unreliable |
1da177e4 LT |
1598 | * service, so we have no fragmentation and no coalescence |
1599 | */ | |
1600 | if (len > self->max_data_size) { | |
1601 | IRDA_DEBUG(0, "%s(), Warning to much data! " | |
1602 | "Chopping frame from %zd to %d bytes!\n", | |
0dc47877 | 1603 | __func__, len, self->max_data_size); |
1da177e4 LT |
1604 | len = self->max_data_size; |
1605 | } | |
1606 | ||
1607 | skb = sock_alloc_send_skb(sk, len + self->max_header_size, | |
1608 | msg->msg_flags & MSG_DONTWAIT, &err); | |
58a9d732 | 1609 | err = -ENOBUFS; |
1da177e4 | 1610 | if (!skb) |
58a9d732 | 1611 | goto out; |
1da177e4 LT |
1612 | |
1613 | skb_reserve(skb, self->max_header_size); | |
eeeb0374 | 1614 | skb_reset_transport_header(skb); |
1da177e4 | 1615 | |
0dc47877 | 1616 | IRDA_DEBUG(4, "%s(), appending user data\n", __func__); |
eeeb0374 ACM |
1617 | skb_put(skb, len); |
1618 | err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len); | |
1da177e4 LT |
1619 | if (err) { |
1620 | kfree_skb(skb); | |
58a9d732 | 1621 | goto out; |
1da177e4 LT |
1622 | } |
1623 | ||
1624 | /* | |
1625 | * Just send the message to TinyTP, and let it deal with possible | |
1626 | * errors. No need to duplicate all that here | |
1627 | */ | |
1628 | err = irttp_udata_request(self->tsap, skb); | |
1629 | if (err) { | |
0dc47877 | 1630 | IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err); |
58a9d732 | 1631 | goto out; |
1da177e4 | 1632 | } |
58a9d732 | 1633 | unlock_kernel(); |
1da177e4 | 1634 | return len; |
58a9d732 AB |
1635 | out: |
1636 | unlock_kernel(); | |
1637 | return err; | |
1da177e4 LT |
1638 | } |
1639 | ||
1640 | /* | |
1641 | * Function irda_sendmsg_ultra (iocb, sock, msg, len) | |
1642 | * | |
1643 | * Send message down to IrLMP for the unreliable Ultra | |
1644 | * packet service... | |
1645 | */ | |
1646 | #ifdef CONFIG_IRDA_ULTRA | |
1647 | static int irda_sendmsg_ultra(struct kiocb *iocb, struct socket *sock, | |
1648 | struct msghdr *msg, size_t len) | |
1649 | { | |
1650 | struct sock *sk = sock->sk; | |
1651 | struct irda_sock *self; | |
1652 | __u8 pid = 0; | |
1653 | int bound = 0; | |
1654 | struct sk_buff *skb; | |
1da177e4 LT |
1655 | int err; |
1656 | ||
0dc47877 | 1657 | IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len); |
1da177e4 | 1658 | |
58a9d732 AB |
1659 | lock_kernel(); |
1660 | err = -EINVAL; | |
1da177e4 | 1661 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT)) |
58a9d732 | 1662 | goto out; |
1da177e4 | 1663 | |
58a9d732 | 1664 | err = -EPIPE; |
1da177e4 LT |
1665 | if (sk->sk_shutdown & SEND_SHUTDOWN) { |
1666 | send_sig(SIGPIPE, current, 0); | |
58a9d732 | 1667 | goto out; |
1da177e4 LT |
1668 | } |
1669 | ||
1670 | self = irda_sk(sk); | |
1da177e4 LT |
1671 | |
1672 | /* Check if an address was specified with sendto. Jean II */ | |
1673 | if (msg->msg_name) { | |
1674 | struct sockaddr_irda *addr = (struct sockaddr_irda *) msg->msg_name; | |
58a9d732 | 1675 | err = -EINVAL; |
1da177e4 LT |
1676 | /* Check address, extract pid. Jean II */ |
1677 | if (msg->msg_namelen < sizeof(*addr)) | |
58a9d732 | 1678 | goto out; |
1da177e4 | 1679 | if (addr->sir_family != AF_IRDA) |
58a9d732 | 1680 | goto out; |
1da177e4 LT |
1681 | |
1682 | pid = addr->sir_lsap_sel; | |
1683 | if (pid & 0x80) { | |
0dc47877 | 1684 | IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__); |
58a9d732 AB |
1685 | err = -EOPNOTSUPP; |
1686 | goto out; | |
1da177e4 LT |
1687 | } |
1688 | } else { | |
1689 | /* Check that the socket is properly bound to an Ultra | |
1690 | * port. Jean II */ | |
1691 | if ((self->lsap == NULL) || | |
1692 | (sk->sk_state != TCP_ESTABLISHED)) { | |
1693 | IRDA_DEBUG(0, "%s(), socket not bound to Ultra PID.\n", | |
0dc47877 | 1694 | __func__); |
58a9d732 AB |
1695 | err = -ENOTCONN; |
1696 | goto out; | |
1da177e4 LT |
1697 | } |
1698 | /* Use PID from socket */ | |
1699 | bound = 1; | |
1700 | } | |
1701 | ||
1702 | /* | |
7f927fcc | 1703 | * Check that we don't send out too big frames. This is an unreliable |
1da177e4 LT |
1704 | * service, so we have no fragmentation and no coalescence |
1705 | */ | |
1706 | if (len > self->max_data_size) { | |
1707 | IRDA_DEBUG(0, "%s(), Warning to much data! " | |
1708 | "Chopping frame from %zd to %d bytes!\n", | |
0dc47877 | 1709 | __func__, len, self->max_data_size); |
1da177e4 LT |
1710 | len = self->max_data_size; |
1711 | } | |
1712 | ||
1713 | skb = sock_alloc_send_skb(sk, len + self->max_header_size, | |
1714 | msg->msg_flags & MSG_DONTWAIT, &err); | |
58a9d732 | 1715 | err = -ENOBUFS; |
1da177e4 | 1716 | if (!skb) |
58a9d732 | 1717 | goto out; |
1da177e4 LT |
1718 | |
1719 | skb_reserve(skb, self->max_header_size); | |
eeeb0374 | 1720 | skb_reset_transport_header(skb); |
1da177e4 | 1721 | |
0dc47877 | 1722 | IRDA_DEBUG(4, "%s(), appending user data\n", __func__); |
eeeb0374 ACM |
1723 | skb_put(skb, len); |
1724 | err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len); | |
1da177e4 LT |
1725 | if (err) { |
1726 | kfree_skb(skb); | |
58a9d732 | 1727 | goto out; |
1da177e4 LT |
1728 | } |
1729 | ||
1730 | err = irlmp_connless_data_request((bound ? self->lsap : NULL), | |
1731 | skb, pid); | |
58a9d732 | 1732 | if (err) |
0dc47877 | 1733 | IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err); |
58a9d732 AB |
1734 | out: |
1735 | unlock_kernel(); | |
1736 | return err ? : len; | |
1da177e4 LT |
1737 | } |
1738 | #endif /* CONFIG_IRDA_ULTRA */ | |
1739 | ||
1740 | /* | |
1741 | * Function irda_shutdown (sk, how) | |
1742 | */ | |
1743 | static int irda_shutdown(struct socket *sock, int how) | |
1744 | { | |
1745 | struct sock *sk = sock->sk; | |
1746 | struct irda_sock *self = irda_sk(sk); | |
1747 | ||
0dc47877 | 1748 | IRDA_DEBUG(1, "%s(%p)\n", __func__, self); |
1da177e4 | 1749 | |
58a9d732 AB |
1750 | lock_kernel(); |
1751 | ||
1da177e4 LT |
1752 | sk->sk_state = TCP_CLOSE; |
1753 | sk->sk_shutdown |= SEND_SHUTDOWN; | |
1754 | sk->sk_state_change(sk); | |
1755 | ||
1756 | if (self->iriap) { | |
1757 | iriap_close(self->iriap); | |
1758 | self->iriap = NULL; | |
1759 | } | |
1760 | ||
1761 | if (self->tsap) { | |
1762 | irttp_disconnect_request(self->tsap, NULL, P_NORMAL); | |
1763 | irttp_close_tsap(self->tsap); | |
1764 | self->tsap = NULL; | |
1765 | } | |
1766 | ||
1767 | /* A few cleanup so the socket look as good as new... */ | |
1768 | self->rx_flow = self->tx_flow = FLOW_START; /* needed ??? */ | |
1769 | self->daddr = DEV_ADDR_ANY; /* Until we get re-connected */ | |
1770 | self->saddr = 0x0; /* so IrLMP assign us any link */ | |
1771 | ||
58a9d732 AB |
1772 | unlock_kernel(); |
1773 | ||
6819bc2e | 1774 | return 0; |
1da177e4 LT |
1775 | } |
1776 | ||
1777 | /* | |
1778 | * Function irda_poll (file, sock, wait) | |
1779 | */ | |
1780 | static unsigned int irda_poll(struct file * file, struct socket *sock, | |
1781 | poll_table *wait) | |
1782 | { | |
1783 | struct sock *sk = sock->sk; | |
1784 | struct irda_sock *self = irda_sk(sk); | |
1785 | unsigned int mask; | |
1786 | ||
0dc47877 | 1787 | IRDA_DEBUG(4, "%s()\n", __func__); |
1da177e4 | 1788 | |
58a9d732 | 1789 | lock_kernel(); |
aa395145 | 1790 | poll_wait(file, sk_sleep(sk), wait); |
1da177e4 LT |
1791 | mask = 0; |
1792 | ||
1793 | /* Exceptional events? */ | |
1794 | if (sk->sk_err) | |
1795 | mask |= POLLERR; | |
1796 | if (sk->sk_shutdown & RCV_SHUTDOWN) { | |
0dc47877 | 1797 | IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__); |
1da177e4 LT |
1798 | mask |= POLLHUP; |
1799 | } | |
1800 | ||
1801 | /* Readable? */ | |
1802 | if (!skb_queue_empty(&sk->sk_receive_queue)) { | |
1803 | IRDA_DEBUG(4, "Socket is readable\n"); | |
1804 | mask |= POLLIN | POLLRDNORM; | |
1805 | } | |
1806 | ||
1807 | /* Connection-based need to check for termination and startup */ | |
1808 | switch (sk->sk_type) { | |
1809 | case SOCK_STREAM: | |
1810 | if (sk->sk_state == TCP_CLOSE) { | |
0dc47877 | 1811 | IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__); |
1da177e4 LT |
1812 | mask |= POLLHUP; |
1813 | } | |
1814 | ||
1815 | if (sk->sk_state == TCP_ESTABLISHED) { | |
1816 | if ((self->tx_flow == FLOW_START) && | |
1817 | sock_writeable(sk)) | |
1818 | { | |
1819 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; | |
1820 | } | |
1821 | } | |
1822 | break; | |
1823 | case SOCK_SEQPACKET: | |
1824 | if ((self->tx_flow == FLOW_START) && | |
1825 | sock_writeable(sk)) | |
1826 | { | |
1827 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; | |
1828 | } | |
1829 | break; | |
1830 | case SOCK_DGRAM: | |
1831 | if (sock_writeable(sk)) | |
1832 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; | |
1833 | break; | |
1834 | default: | |
1835 | break; | |
1836 | } | |
58a9d732 | 1837 | unlock_kernel(); |
1da177e4 LT |
1838 | return mask; |
1839 | } | |
1840 | ||
58a9d732 AB |
1841 | static unsigned int irda_datagram_poll(struct file *file, struct socket *sock, |
1842 | poll_table *wait) | |
1843 | { | |
1844 | int err; | |
1845 | ||
1846 | lock_kernel(); | |
1847 | err = datagram_poll(file, sock, wait); | |
1848 | unlock_kernel(); | |
1849 | ||
1850 | return err; | |
1851 | } | |
1852 | ||
1da177e4 LT |
1853 | /* |
1854 | * Function irda_ioctl (sock, cmd, arg) | |
1855 | */ | |
1856 | static int irda_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1857 | { | |
1858 | struct sock *sk = sock->sk; | |
58a9d732 | 1859 | int err; |
1da177e4 | 1860 | |
0dc47877 | 1861 | IRDA_DEBUG(4, "%s(), cmd=%#x\n", __func__, cmd); |
1da177e4 | 1862 | |
58a9d732 AB |
1863 | lock_kernel(); |
1864 | err = -EINVAL; | |
1da177e4 LT |
1865 | switch (cmd) { |
1866 | case TIOCOUTQ: { | |
1867 | long amount; | |
31e6d363 ED |
1868 | |
1869 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); | |
1da177e4 LT |
1870 | if (amount < 0) |
1871 | amount = 0; | |
58a9d732 AB |
1872 | err = put_user(amount, (unsigned int __user *)arg); |
1873 | break; | |
1da177e4 LT |
1874 | } |
1875 | ||
1876 | case TIOCINQ: { | |
1877 | struct sk_buff *skb; | |
1878 | long amount = 0L; | |
1879 | /* These two are safe on a single CPU system as only user tasks fiddle here */ | |
1880 | if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) | |
1881 | amount = skb->len; | |
58a9d732 AB |
1882 | err = put_user(amount, (unsigned int __user *)arg); |
1883 | break; | |
1da177e4 LT |
1884 | } |
1885 | ||
1886 | case SIOCGSTAMP: | |
1887 | if (sk != NULL) | |
58a9d732 AB |
1888 | err = sock_get_timestamp(sk, (struct timeval __user *)arg); |
1889 | break; | |
1da177e4 LT |
1890 | |
1891 | case SIOCGIFADDR: | |
1892 | case SIOCSIFADDR: | |
1893 | case SIOCGIFDSTADDR: | |
1894 | case SIOCSIFDSTADDR: | |
1895 | case SIOCGIFBRDADDR: | |
1896 | case SIOCSIFBRDADDR: | |
1897 | case SIOCGIFNETMASK: | |
1898 | case SIOCSIFNETMASK: | |
1899 | case SIOCGIFMETRIC: | |
1900 | case SIOCSIFMETRIC: | |
58a9d732 | 1901 | break; |
1da177e4 | 1902 | default: |
0dc47877 | 1903 | IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __func__); |
58a9d732 | 1904 | err = -ENOIOCTLCMD; |
1da177e4 | 1905 | } |
58a9d732 | 1906 | unlock_kernel(); |
1da177e4 | 1907 | |
58a9d732 | 1908 | return err; |
1da177e4 LT |
1909 | } |
1910 | ||
f6c90b71 PV |
1911 | #ifdef CONFIG_COMPAT |
1912 | /* | |
1913 | * Function irda_ioctl (sock, cmd, arg) | |
1914 | */ | |
1915 | static int irda_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1916 | { | |
1917 | /* | |
1918 | * All IRDA's ioctl are standard ones. | |
1919 | */ | |
1920 | return -ENOIOCTLCMD; | |
1921 | } | |
1922 | #endif | |
1923 | ||
1da177e4 LT |
1924 | /* |
1925 | * Function irda_setsockopt (sock, level, optname, optval, optlen) | |
1926 | * | |
1927 | * Set some options for the socket | |
1928 | * | |
1929 | */ | |
58a9d732 | 1930 | static int __irda_setsockopt(struct socket *sock, int level, int optname, |
b7058842 | 1931 | char __user *optval, unsigned int optlen) |
1da177e4 LT |
1932 | { |
1933 | struct sock *sk = sock->sk; | |
1934 | struct irda_sock *self = irda_sk(sk); | |
1935 | struct irda_ias_set *ias_opt; | |
1936 | struct ias_object *ias_obj; | |
1937 | struct ias_attrib * ias_attr; /* Attribute in IAS object */ | |
61e44b48 | 1938 | int opt, free_ias = 0; |
1da177e4 | 1939 | |
0dc47877 | 1940 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
1941 | |
1942 | if (level != SOL_IRLMP) | |
1943 | return -ENOPROTOOPT; | |
1944 | ||
1945 | switch (optname) { | |
1946 | case IRLMP_IAS_SET: | |
1947 | /* The user want to add an attribute to an existing IAS object | |
1948 | * (in the IAS database) or to create a new object with this | |
1949 | * attribute. | |
1950 | * We first query IAS to know if the object exist, and then | |
1951 | * create the right attribute... | |
1952 | */ | |
1953 | ||
1954 | if (optlen != sizeof(struct irda_ias_set)) | |
1955 | return -EINVAL; | |
1956 | ||
1957 | ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC); | |
1958 | if (ias_opt == NULL) | |
1959 | return -ENOMEM; | |
1960 | ||
1961 | /* Copy query to the driver. */ | |
1962 | if (copy_from_user(ias_opt, optval, optlen)) { | |
1963 | kfree(ias_opt); | |
1964 | return -EFAULT; | |
1965 | } | |
1966 | ||
1967 | /* Find the object we target. | |
1968 | * If the user gives us an empty string, we use the object | |
1969 | * associated with this socket. This will workaround | |
1970 | * duplicated class name - Jean II */ | |
1971 | if(ias_opt->irda_class_name[0] == '\0') { | |
1972 | if(self->ias_obj == NULL) { | |
1973 | kfree(ias_opt); | |
1974 | return -EINVAL; | |
1975 | } | |
1976 | ias_obj = self->ias_obj; | |
1977 | } else | |
1978 | ias_obj = irias_find_object(ias_opt->irda_class_name); | |
1979 | ||
1980 | /* Only ROOT can mess with the global IAS database. | |
1981 | * Users can only add attributes to the object associated | |
1982 | * with the socket they own - Jean II */ | |
1983 | if((!capable(CAP_NET_ADMIN)) && | |
1984 | ((ias_obj == NULL) || (ias_obj != self->ias_obj))) { | |
1985 | kfree(ias_opt); | |
1986 | return -EPERM; | |
1987 | } | |
1988 | ||
1989 | /* If the object doesn't exist, create it */ | |
1990 | if(ias_obj == (struct ias_object *) NULL) { | |
1991 | /* Create a new object */ | |
1992 | ias_obj = irias_new_object(ias_opt->irda_class_name, | |
1993 | jiffies); | |
61e44b48 JJ |
1994 | if (ias_obj == NULL) { |
1995 | kfree(ias_opt); | |
1996 | return -ENOMEM; | |
1997 | } | |
1998 | free_ias = 1; | |
1da177e4 LT |
1999 | } |
2000 | ||
2001 | /* Do we have the attribute already ? */ | |
2002 | if(irias_find_attrib(ias_obj, ias_opt->irda_attrib_name)) { | |
2003 | kfree(ias_opt); | |
61e44b48 JJ |
2004 | if (free_ias) { |
2005 | kfree(ias_obj->name); | |
2006 | kfree(ias_obj); | |
2007 | } | |
1da177e4 LT |
2008 | return -EINVAL; |
2009 | } | |
2010 | ||
2011 | /* Look at the type */ | |
2012 | switch(ias_opt->irda_attrib_type) { | |
2013 | case IAS_INTEGER: | |
2014 | /* Add an integer attribute */ | |
2015 | irias_add_integer_attrib( | |
2016 | ias_obj, | |
2017 | ias_opt->irda_attrib_name, | |
2018 | ias_opt->attribute.irda_attrib_int, | |
2019 | IAS_USER_ATTR); | |
2020 | break; | |
2021 | case IAS_OCT_SEQ: | |
2022 | /* Check length */ | |
2023 | if(ias_opt->attribute.irda_attrib_octet_seq.len > | |
2024 | IAS_MAX_OCTET_STRING) { | |
2025 | kfree(ias_opt); | |
61e44b48 JJ |
2026 | if (free_ias) { |
2027 | kfree(ias_obj->name); | |
2028 | kfree(ias_obj); | |
2029 | } | |
2030 | ||
1da177e4 LT |
2031 | return -EINVAL; |
2032 | } | |
2033 | /* Add an octet sequence attribute */ | |
2034 | irias_add_octseq_attrib( | |
2035 | ias_obj, | |
2036 | ias_opt->irda_attrib_name, | |
2037 | ias_opt->attribute.irda_attrib_octet_seq.octet_seq, | |
2038 | ias_opt->attribute.irda_attrib_octet_seq.len, | |
2039 | IAS_USER_ATTR); | |
2040 | break; | |
2041 | case IAS_STRING: | |
2042 | /* Should check charset & co */ | |
2043 | /* Check length */ | |
2044 | /* The length is encoded in a __u8, and | |
2045 | * IAS_MAX_STRING == 256, so there is no way | |
2046 | * userspace can pass us a string too large. | |
2047 | * Jean II */ | |
2048 | /* NULL terminate the string (avoid troubles) */ | |
2049 | ias_opt->attribute.irda_attrib_string.string[ias_opt->attribute.irda_attrib_string.len] = '\0'; | |
2050 | /* Add a string attribute */ | |
2051 | irias_add_string_attrib( | |
2052 | ias_obj, | |
2053 | ias_opt->irda_attrib_name, | |
2054 | ias_opt->attribute.irda_attrib_string.string, | |
2055 | IAS_USER_ATTR); | |
2056 | break; | |
2057 | default : | |
2058 | kfree(ias_opt); | |
61e44b48 JJ |
2059 | if (free_ias) { |
2060 | kfree(ias_obj->name); | |
2061 | kfree(ias_obj); | |
2062 | } | |
1da177e4 LT |
2063 | return -EINVAL; |
2064 | } | |
2065 | irias_insert_object(ias_obj); | |
2066 | kfree(ias_opt); | |
2067 | break; | |
2068 | case IRLMP_IAS_DEL: | |
2069 | /* The user want to delete an object from our local IAS | |
2070 | * database. We just need to query the IAS, check is the | |
2071 | * object is not owned by the kernel and delete it. | |
2072 | */ | |
2073 | ||
2074 | if (optlen != sizeof(struct irda_ias_set)) | |
2075 | return -EINVAL; | |
2076 | ||
2077 | ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC); | |
2078 | if (ias_opt == NULL) | |
2079 | return -ENOMEM; | |
2080 | ||
2081 | /* Copy query to the driver. */ | |
2082 | if (copy_from_user(ias_opt, optval, optlen)) { | |
2083 | kfree(ias_opt); | |
2084 | return -EFAULT; | |
2085 | } | |
2086 | ||
2087 | /* Find the object we target. | |
2088 | * If the user gives us an empty string, we use the object | |
2089 | * associated with this socket. This will workaround | |
2090 | * duplicated class name - Jean II */ | |
2091 | if(ias_opt->irda_class_name[0] == '\0') | |
2092 | ias_obj = self->ias_obj; | |
2093 | else | |
2094 | ias_obj = irias_find_object(ias_opt->irda_class_name); | |
2095 | if(ias_obj == (struct ias_object *) NULL) { | |
2096 | kfree(ias_opt); | |
2097 | return -EINVAL; | |
2098 | } | |
2099 | ||
2100 | /* Only ROOT can mess with the global IAS database. | |
2101 | * Users can only del attributes from the object associated | |
2102 | * with the socket they own - Jean II */ | |
2103 | if((!capable(CAP_NET_ADMIN)) && | |
2104 | ((ias_obj == NULL) || (ias_obj != self->ias_obj))) { | |
2105 | kfree(ias_opt); | |
2106 | return -EPERM; | |
2107 | } | |
2108 | ||
2109 | /* Find the attribute (in the object) we target */ | |
2110 | ias_attr = irias_find_attrib(ias_obj, | |
2111 | ias_opt->irda_attrib_name); | |
2112 | if(ias_attr == (struct ias_attrib *) NULL) { | |
2113 | kfree(ias_opt); | |
2114 | return -EINVAL; | |
2115 | } | |
2116 | ||
2117 | /* Check is the user space own the object */ | |
2118 | if(ias_attr->value->owner != IAS_USER_ATTR) { | |
0dc47877 | 2119 | IRDA_DEBUG(1, "%s(), attempting to delete a kernel attribute\n", __func__); |
1da177e4 LT |
2120 | kfree(ias_opt); |
2121 | return -EPERM; | |
2122 | } | |
2123 | ||
2124 | /* Remove the attribute (and maybe the object) */ | |
2125 | irias_delete_attrib(ias_obj, ias_attr, 1); | |
2126 | kfree(ias_opt); | |
2127 | break; | |
2128 | case IRLMP_MAX_SDU_SIZE: | |
2129 | if (optlen < sizeof(int)) | |
2130 | return -EINVAL; | |
2131 | ||
2132 | if (get_user(opt, (int __user *)optval)) | |
2133 | return -EFAULT; | |
2134 | ||
2135 | /* Only possible for a seqpacket service (TTP with SAR) */ | |
2136 | if (sk->sk_type != SOCK_SEQPACKET) { | |
2137 | IRDA_DEBUG(2, "%s(), setting max_sdu_size = %d\n", | |
0dc47877 | 2138 | __func__, opt); |
1da177e4 LT |
2139 | self->max_sdu_size_rx = opt; |
2140 | } else { | |
2141 | IRDA_WARNING("%s: not allowed to set MAXSDUSIZE for this socket type!\n", | |
0dc47877 | 2142 | __func__); |
1da177e4 LT |
2143 | return -ENOPROTOOPT; |
2144 | } | |
2145 | break; | |
2146 | case IRLMP_HINTS_SET: | |
2147 | if (optlen < sizeof(int)) | |
2148 | return -EINVAL; | |
2149 | ||
2150 | /* The input is really a (__u8 hints[2]), easier as an int */ | |
2151 | if (get_user(opt, (int __user *)optval)) | |
2152 | return -EFAULT; | |
2153 | ||
2154 | /* Unregister any old registration */ | |
2155 | if (self->skey) | |
2156 | irlmp_unregister_service(self->skey); | |
2157 | ||
2158 | self->skey = irlmp_register_service((__u16) opt); | |
2159 | break; | |
2160 | case IRLMP_HINT_MASK_SET: | |
2161 | /* As opposed to the previous case which set the hint bits | |
2162 | * that we advertise, this one set the filter we use when | |
2163 | * making a discovery (nodes which don't match any hint | |
2164 | * bit in the mask are not reported). | |
2165 | */ | |
2166 | if (optlen < sizeof(int)) | |
2167 | return -EINVAL; | |
2168 | ||
2169 | /* The input is really a (__u8 hints[2]), easier as an int */ | |
2170 | if (get_user(opt, (int __user *)optval)) | |
2171 | return -EFAULT; | |
2172 | ||
2173 | /* Set the new hint mask */ | |
2174 | self->mask.word = (__u16) opt; | |
2175 | /* Mask out extension bits */ | |
2176 | self->mask.word &= 0x7f7f; | |
2177 | /* Check if no bits */ | |
2178 | if(!self->mask.word) | |
2179 | self->mask.word = 0xFFFF; | |
2180 | ||
2181 | break; | |
2182 | default: | |
2183 | return -ENOPROTOOPT; | |
2184 | } | |
2185 | return 0; | |
2186 | } | |
2187 | ||
58a9d732 AB |
2188 | static int irda_setsockopt(struct socket *sock, int level, int optname, |
2189 | char __user *optval, unsigned int optlen) | |
2190 | { | |
2191 | int err; | |
2192 | ||
2193 | lock_kernel(); | |
2194 | err = __irda_setsockopt(sock, level, optname, optval, optlen); | |
2195 | unlock_kernel(); | |
2196 | ||
2197 | return err; | |
2198 | } | |
2199 | ||
1da177e4 LT |
2200 | /* |
2201 | * Function irda_extract_ias_value(ias_opt, ias_value) | |
2202 | * | |
2203 | * Translate internal IAS value structure to the user space representation | |
2204 | * | |
2205 | * The external representation of IAS values, as we exchange them with | |
2206 | * user space program is quite different from the internal representation, | |
2207 | * as stored in the IAS database (because we need a flat structure for | |
2208 | * crossing kernel boundary). | |
2209 | * This function transform the former in the latter. We also check | |
2210 | * that the value type is valid. | |
2211 | */ | |
2212 | static int irda_extract_ias_value(struct irda_ias_set *ias_opt, | |
2213 | struct ias_value *ias_value) | |
2214 | { | |
2215 | /* Look at the type */ | |
2216 | switch (ias_value->type) { | |
2217 | case IAS_INTEGER: | |
2218 | /* Copy the integer */ | |
2219 | ias_opt->attribute.irda_attrib_int = ias_value->t.integer; | |
2220 | break; | |
2221 | case IAS_OCT_SEQ: | |
2222 | /* Set length */ | |
2223 | ias_opt->attribute.irda_attrib_octet_seq.len = ias_value->len; | |
2224 | /* Copy over */ | |
2225 | memcpy(ias_opt->attribute.irda_attrib_octet_seq.octet_seq, | |
2226 | ias_value->t.oct_seq, ias_value->len); | |
2227 | break; | |
2228 | case IAS_STRING: | |
2229 | /* Set length */ | |
2230 | ias_opt->attribute.irda_attrib_string.len = ias_value->len; | |
2231 | ias_opt->attribute.irda_attrib_string.charset = ias_value->charset; | |
2232 | /* Copy over */ | |
2233 | memcpy(ias_opt->attribute.irda_attrib_string.string, | |
2234 | ias_value->t.string, ias_value->len); | |
2235 | /* NULL terminate the string (avoid troubles) */ | |
2236 | ias_opt->attribute.irda_attrib_string.string[ias_value->len] = '\0'; | |
2237 | break; | |
2238 | case IAS_MISSING: | |
2239 | default : | |
2240 | return -EINVAL; | |
2241 | } | |
2242 | ||
2243 | /* Copy type over */ | |
2244 | ias_opt->irda_attrib_type = ias_value->type; | |
2245 | ||
2246 | return 0; | |
2247 | } | |
2248 | ||
2249 | /* | |
2250 | * Function irda_getsockopt (sock, level, optname, optval, optlen) | |
2251 | */ | |
58a9d732 | 2252 | static int __irda_getsockopt(struct socket *sock, int level, int optname, |
1da177e4 LT |
2253 | char __user *optval, int __user *optlen) |
2254 | { | |
2255 | struct sock *sk = sock->sk; | |
2256 | struct irda_sock *self = irda_sk(sk); | |
2257 | struct irda_device_list list; | |
2258 | struct irda_device_info *discoveries; | |
2259 | struct irda_ias_set * ias_opt; /* IAS get/query params */ | |
2260 | struct ias_object * ias_obj; /* Object in IAS */ | |
2261 | struct ias_attrib * ias_attr; /* Attribute in IAS object */ | |
2262 | int daddr = DEV_ADDR_ANY; /* Dest address for IAS queries */ | |
2263 | int val = 0; | |
2264 | int len = 0; | |
2265 | int err; | |
2266 | int offset, total; | |
2267 | ||
0dc47877 | 2268 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
2269 | |
2270 | if (level != SOL_IRLMP) | |
2271 | return -ENOPROTOOPT; | |
2272 | ||
2273 | if (get_user(len, optlen)) | |
2274 | return -EFAULT; | |
2275 | ||
2276 | if(len < 0) | |
2277 | return -EINVAL; | |
2278 | ||
2279 | switch (optname) { | |
2280 | case IRLMP_ENUMDEVICES: | |
2281 | /* Ask lmp for the current discovery log */ | |
2282 | discoveries = irlmp_get_discoveries(&list.len, self->mask.word, | |
2283 | self->nslots); | |
2284 | /* Check if the we got some results */ | |
2285 | if (discoveries == NULL) | |
2286 | return -EAGAIN; /* Didn't find any devices */ | |
2287 | err = 0; | |
2288 | ||
2289 | /* Write total list length back to client */ | |
2290 | if (copy_to_user(optval, &list, | |
2291 | sizeof(struct irda_device_list) - | |
2292 | sizeof(struct irda_device_info))) | |
2293 | err = -EFAULT; | |
2294 | ||
2295 | /* Offset to first device entry */ | |
2296 | offset = sizeof(struct irda_device_list) - | |
2297 | sizeof(struct irda_device_info); | |
2298 | ||
2299 | /* Copy the list itself - watch for overflow */ | |
2300 | if(list.len > 2048) | |
2301 | { | |
2302 | err = -EINVAL; | |
2303 | goto bed; | |
2304 | } | |
2305 | total = offset + (list.len * sizeof(struct irda_device_info)); | |
2306 | if (total > len) | |
2307 | total = len; | |
2308 | if (copy_to_user(optval+offset, discoveries, total - offset)) | |
2309 | err = -EFAULT; | |
2310 | ||
2311 | /* Write total number of bytes used back to client */ | |
2312 | if (put_user(total, optlen)) | |
2313 | err = -EFAULT; | |
2314 | bed: | |
2315 | /* Free up our buffer */ | |
2316 | kfree(discoveries); | |
2317 | if (err) | |
2318 | return err; | |
2319 | break; | |
2320 | case IRLMP_MAX_SDU_SIZE: | |
2321 | val = self->max_data_size; | |
2322 | len = sizeof(int); | |
2323 | if (put_user(len, optlen)) | |
2324 | return -EFAULT; | |
2325 | ||
2326 | if (copy_to_user(optval, &val, len)) | |
2327 | return -EFAULT; | |
2328 | break; | |
2329 | case IRLMP_IAS_GET: | |
2330 | /* The user want an object from our local IAS database. | |
2331 | * We just need to query the IAS and return the value | |
2332 | * that we found */ | |
2333 | ||
2334 | /* Check that the user has allocated the right space for us */ | |
2335 | if (len != sizeof(struct irda_ias_set)) | |
2336 | return -EINVAL; | |
2337 | ||
2338 | ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC); | |
2339 | if (ias_opt == NULL) | |
2340 | return -ENOMEM; | |
2341 | ||
2342 | /* Copy query to the driver. */ | |
2343 | if (copy_from_user(ias_opt, optval, len)) { | |
2344 | kfree(ias_opt); | |
2345 | return -EFAULT; | |
2346 | } | |
2347 | ||
2348 | /* Find the object we target. | |
2349 | * If the user gives us an empty string, we use the object | |
2350 | * associated with this socket. This will workaround | |
2351 | * duplicated class name - Jean II */ | |
2352 | if(ias_opt->irda_class_name[0] == '\0') | |
2353 | ias_obj = self->ias_obj; | |
2354 | else | |
2355 | ias_obj = irias_find_object(ias_opt->irda_class_name); | |
2356 | if(ias_obj == (struct ias_object *) NULL) { | |
2357 | kfree(ias_opt); | |
2358 | return -EINVAL; | |
2359 | } | |
2360 | ||
2361 | /* Find the attribute (in the object) we target */ | |
2362 | ias_attr = irias_find_attrib(ias_obj, | |
2363 | ias_opt->irda_attrib_name); | |
2364 | if(ias_attr == (struct ias_attrib *) NULL) { | |
2365 | kfree(ias_opt); | |
2366 | return -EINVAL; | |
2367 | } | |
2368 | ||
2369 | /* Translate from internal to user structure */ | |
2370 | err = irda_extract_ias_value(ias_opt, ias_attr->value); | |
2371 | if(err) { | |
2372 | kfree(ias_opt); | |
2373 | return err; | |
2374 | } | |
2375 | ||
2376 | /* Copy reply to the user */ | |
2377 | if (copy_to_user(optval, ias_opt, | |
2378 | sizeof(struct irda_ias_set))) { | |
2379 | kfree(ias_opt); | |
2380 | return -EFAULT; | |
2381 | } | |
2382 | /* Note : don't need to put optlen, we checked it */ | |
2383 | kfree(ias_opt); | |
2384 | break; | |
2385 | case IRLMP_IAS_QUERY: | |
2386 | /* The user want an object from a remote IAS database. | |
2387 | * We need to use IAP to query the remote database and | |
2388 | * then wait for the answer to come back. */ | |
2389 | ||
2390 | /* Check that the user has allocated the right space for us */ | |
2391 | if (len != sizeof(struct irda_ias_set)) | |
2392 | return -EINVAL; | |
2393 | ||
2394 | ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC); | |
2395 | if (ias_opt == NULL) | |
2396 | return -ENOMEM; | |
2397 | ||
2398 | /* Copy query to the driver. */ | |
2399 | if (copy_from_user(ias_opt, optval, len)) { | |
2400 | kfree(ias_opt); | |
2401 | return -EFAULT; | |
2402 | } | |
2403 | ||
2404 | /* At this point, there are two cases... | |
2405 | * 1) the socket is connected - that's the easy case, we | |
2406 | * just query the device we are connected to... | |
2407 | * 2) the socket is not connected - the user doesn't want | |
2408 | * to connect and/or may not have a valid service name | |
2409 | * (so can't create a fake connection). In this case, | |
2410 | * we assume that the user pass us a valid destination | |
2411 | * address in the requesting structure... | |
2412 | */ | |
2413 | if(self->daddr != DEV_ADDR_ANY) { | |
2414 | /* We are connected - reuse known daddr */ | |
2415 | daddr = self->daddr; | |
2416 | } else { | |
2417 | /* We are not connected, we must specify a valid | |
2418 | * destination address */ | |
2419 | daddr = ias_opt->daddr; | |
2420 | if((!daddr) || (daddr == DEV_ADDR_ANY)) { | |
2421 | kfree(ias_opt); | |
2422 | return -EINVAL; | |
2423 | } | |
2424 | } | |
2425 | ||
2426 | /* Check that we can proceed with IAP */ | |
2427 | if (self->iriap) { | |
2428 | IRDA_WARNING("%s: busy with a previous query\n", | |
0dc47877 | 2429 | __func__); |
1da177e4 LT |
2430 | kfree(ias_opt); |
2431 | return -EBUSY; | |
2432 | } | |
2433 | ||
2434 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, | |
2435 | irda_getvalue_confirm); | |
2436 | ||
2437 | if (self->iriap == NULL) { | |
2438 | kfree(ias_opt); | |
2439 | return -ENOMEM; | |
2440 | } | |
2441 | ||
2442 | /* Treat unexpected wakeup as disconnect */ | |
2443 | self->errno = -EHOSTUNREACH; | |
2444 | ||
2445 | /* Query remote LM-IAS */ | |
2446 | iriap_getvaluebyclass_request(self->iriap, | |
2447 | self->saddr, daddr, | |
2448 | ias_opt->irda_class_name, | |
2449 | ias_opt->irda_attrib_name); | |
2450 | ||
2451 | /* Wait for answer, if not yet finished (or failed) */ | |
2452 | if (wait_event_interruptible(self->query_wait, | |
2453 | (self->iriap == NULL))) { | |
2454 | /* pending request uses copy of ias_opt-content | |
2455 | * we can free it regardless! */ | |
2456 | kfree(ias_opt); | |
2457 | /* Treat signals as disconnect */ | |
2458 | return -EHOSTUNREACH; | |
2459 | } | |
2460 | ||
2461 | /* Check what happened */ | |
2462 | if (self->errno) | |
2463 | { | |
2464 | kfree(ias_opt); | |
2465 | /* Requested object/attribute doesn't exist */ | |
2466 | if((self->errno == IAS_CLASS_UNKNOWN) || | |
2467 | (self->errno == IAS_ATTRIB_UNKNOWN)) | |
2468 | return (-EADDRNOTAVAIL); | |
2469 | else | |
2470 | return (-EHOSTUNREACH); | |
2471 | } | |
2472 | ||
2473 | /* Translate from internal to user structure */ | |
2474 | err = irda_extract_ias_value(ias_opt, self->ias_result); | |
2475 | if (self->ias_result) | |
2476 | irias_delete_value(self->ias_result); | |
2477 | if (err) { | |
2478 | kfree(ias_opt); | |
2479 | return err; | |
2480 | } | |
2481 | ||
2482 | /* Copy reply to the user */ | |
2483 | if (copy_to_user(optval, ias_opt, | |
2484 | sizeof(struct irda_ias_set))) { | |
2485 | kfree(ias_opt); | |
2486 | return -EFAULT; | |
2487 | } | |
2488 | /* Note : don't need to put optlen, we checked it */ | |
2489 | kfree(ias_opt); | |
2490 | break; | |
2491 | case IRLMP_WAITDEVICE: | |
2492 | /* This function is just another way of seeing life ;-) | |
2493 | * IRLMP_ENUMDEVICES assumes that you have a static network, | |
2494 | * and that you just want to pick one of the devices present. | |
2495 | * On the other hand, in here we assume that no device is | |
2496 | * present and that at some point in the future a device will | |
2497 | * come into range. When this device arrive, we just wake | |
2498 | * up the caller, so that he has time to connect to it before | |
2499 | * the device goes away... | |
2500 | * Note : once the node has been discovered for more than a | |
2501 | * few second, it won't trigger this function, unless it | |
2502 | * goes away and come back changes its hint bits (so we | |
2503 | * might call it IRLMP_WAITNEWDEVICE). | |
2504 | */ | |
2505 | ||
2506 | /* Check that the user is passing us an int */ | |
2507 | if (len != sizeof(int)) | |
2508 | return -EINVAL; | |
2509 | /* Get timeout in ms (max time we block the caller) */ | |
2510 | if (get_user(val, (int __user *)optval)) | |
2511 | return -EFAULT; | |
2512 | ||
2513 | /* Tell IrLMP we want to be notified */ | |
2514 | irlmp_update_client(self->ckey, self->mask.word, | |
2515 | irda_selective_discovery_indication, | |
2516 | NULL, (void *) self); | |
2517 | ||
2518 | /* Do some discovery (and also return cached results) */ | |
2519 | irlmp_discovery_request(self->nslots); | |
2520 | ||
2521 | /* Wait until a node is discovered */ | |
2522 | if (!self->cachedaddr) { | |
2523 | int ret = 0; | |
2524 | ||
0dc47877 | 2525 | IRDA_DEBUG(1, "%s(), nothing discovered yet, going to sleep...\n", __func__); |
1da177e4 LT |
2526 | |
2527 | /* Set watchdog timer to expire in <val> ms. */ | |
2528 | self->errno = 0; | |
b24b8a24 PE |
2529 | setup_timer(&self->watchdog, irda_discovery_timeout, |
2530 | (unsigned long)self); | |
1da177e4 LT |
2531 | self->watchdog.expires = jiffies + (val * HZ/1000); |
2532 | add_timer(&(self->watchdog)); | |
2533 | ||
2534 | /* Wait for IR-LMP to call us back */ | |
2535 | __wait_event_interruptible(self->query_wait, | |
2536 | (self->cachedaddr != 0 || self->errno == -ETIME), | |
2537 | ret); | |
2538 | ||
2539 | /* If watchdog is still activated, kill it! */ | |
2540 | if(timer_pending(&(self->watchdog))) | |
2541 | del_timer(&(self->watchdog)); | |
2542 | ||
0dc47877 | 2543 | IRDA_DEBUG(1, "%s(), ...waking up !\n", __func__); |
1da177e4 LT |
2544 | |
2545 | if (ret != 0) | |
2546 | return ret; | |
2547 | } | |
2548 | else | |
2549 | IRDA_DEBUG(1, "%s(), found immediately !\n", | |
0dc47877 | 2550 | __func__); |
1da177e4 LT |
2551 | |
2552 | /* Tell IrLMP that we have been notified */ | |
2553 | irlmp_update_client(self->ckey, self->mask.word, | |
2554 | NULL, NULL, NULL); | |
2555 | ||
2556 | /* Check if the we got some results */ | |
2557 | if (!self->cachedaddr) | |
2558 | return -EAGAIN; /* Didn't find any devices */ | |
2559 | daddr = self->cachedaddr; | |
2560 | /* Cleanup */ | |
2561 | self->cachedaddr = 0; | |
2562 | ||
2563 | /* We return the daddr of the device that trigger the | |
2564 | * wakeup. As irlmp pass us only the new devices, we | |
2565 | * are sure that it's not an old device. | |
2566 | * If the user want more details, he should query | |
2567 | * the whole discovery log and pick one device... | |
2568 | */ | |
2569 | if (put_user(daddr, (int __user *)optval)) | |
2570 | return -EFAULT; | |
2571 | ||
2572 | break; | |
2573 | default: | |
2574 | return -ENOPROTOOPT; | |
2575 | } | |
2576 | ||
2577 | return 0; | |
2578 | } | |
2579 | ||
58a9d732 AB |
2580 | static int irda_getsockopt(struct socket *sock, int level, int optname, |
2581 | char __user *optval, int __user *optlen) | |
2582 | { | |
2583 | int err; | |
2584 | ||
2585 | lock_kernel(); | |
2586 | err = __irda_getsockopt(sock, level, optname, optval, optlen); | |
2587 | unlock_kernel(); | |
2588 | ||
2589 | return err; | |
2590 | } | |
2591 | ||
ec1b4cf7 | 2592 | static const struct net_proto_family irda_family_ops = { |
1da177e4 LT |
2593 | .family = PF_IRDA, |
2594 | .create = irda_create, | |
2595 | .owner = THIS_MODULE, | |
2596 | }; | |
2597 | ||
58a9d732 | 2598 | static const struct proto_ops irda_stream_ops = { |
1da177e4 LT |
2599 | .family = PF_IRDA, |
2600 | .owner = THIS_MODULE, | |
2601 | .release = irda_release, | |
2602 | .bind = irda_bind, | |
2603 | .connect = irda_connect, | |
2604 | .socketpair = sock_no_socketpair, | |
2605 | .accept = irda_accept, | |
2606 | .getname = irda_getname, | |
2607 | .poll = irda_poll, | |
2608 | .ioctl = irda_ioctl, | |
f6c90b71 PV |
2609 | #ifdef CONFIG_COMPAT |
2610 | .compat_ioctl = irda_compat_ioctl, | |
2611 | #endif | |
1da177e4 LT |
2612 | .listen = irda_listen, |
2613 | .shutdown = irda_shutdown, | |
2614 | .setsockopt = irda_setsockopt, | |
2615 | .getsockopt = irda_getsockopt, | |
2616 | .sendmsg = irda_sendmsg, | |
2617 | .recvmsg = irda_recvmsg_stream, | |
2618 | .mmap = sock_no_mmap, | |
2619 | .sendpage = sock_no_sendpage, | |
2620 | }; | |
2621 | ||
58a9d732 | 2622 | static const struct proto_ops irda_seqpacket_ops = { |
1da177e4 LT |
2623 | .family = PF_IRDA, |
2624 | .owner = THIS_MODULE, | |
2625 | .release = irda_release, | |
2626 | .bind = irda_bind, | |
2627 | .connect = irda_connect, | |
2628 | .socketpair = sock_no_socketpair, | |
2629 | .accept = irda_accept, | |
2630 | .getname = irda_getname, | |
58a9d732 | 2631 | .poll = irda_datagram_poll, |
1da177e4 | 2632 | .ioctl = irda_ioctl, |
f6c90b71 PV |
2633 | #ifdef CONFIG_COMPAT |
2634 | .compat_ioctl = irda_compat_ioctl, | |
2635 | #endif | |
1da177e4 LT |
2636 | .listen = irda_listen, |
2637 | .shutdown = irda_shutdown, | |
2638 | .setsockopt = irda_setsockopt, | |
2639 | .getsockopt = irda_getsockopt, | |
2640 | .sendmsg = irda_sendmsg, | |
2641 | .recvmsg = irda_recvmsg_dgram, | |
2642 | .mmap = sock_no_mmap, | |
2643 | .sendpage = sock_no_sendpage, | |
2644 | }; | |
2645 | ||
58a9d732 | 2646 | static const struct proto_ops irda_dgram_ops = { |
1da177e4 LT |
2647 | .family = PF_IRDA, |
2648 | .owner = THIS_MODULE, | |
2649 | .release = irda_release, | |
2650 | .bind = irda_bind, | |
2651 | .connect = irda_connect, | |
2652 | .socketpair = sock_no_socketpair, | |
2653 | .accept = irda_accept, | |
2654 | .getname = irda_getname, | |
58a9d732 | 2655 | .poll = irda_datagram_poll, |
1da177e4 | 2656 | .ioctl = irda_ioctl, |
f6c90b71 PV |
2657 | #ifdef CONFIG_COMPAT |
2658 | .compat_ioctl = irda_compat_ioctl, | |
2659 | #endif | |
1da177e4 LT |
2660 | .listen = irda_listen, |
2661 | .shutdown = irda_shutdown, | |
2662 | .setsockopt = irda_setsockopt, | |
2663 | .getsockopt = irda_getsockopt, | |
2664 | .sendmsg = irda_sendmsg_dgram, | |
2665 | .recvmsg = irda_recvmsg_dgram, | |
2666 | .mmap = sock_no_mmap, | |
2667 | .sendpage = sock_no_sendpage, | |
2668 | }; | |
2669 | ||
2670 | #ifdef CONFIG_IRDA_ULTRA | |
58a9d732 | 2671 | static const struct proto_ops irda_ultra_ops = { |
1da177e4 LT |
2672 | .family = PF_IRDA, |
2673 | .owner = THIS_MODULE, | |
2674 | .release = irda_release, | |
2675 | .bind = irda_bind, | |
2676 | .connect = sock_no_connect, | |
2677 | .socketpair = sock_no_socketpair, | |
2678 | .accept = sock_no_accept, | |
2679 | .getname = irda_getname, | |
58a9d732 | 2680 | .poll = irda_datagram_poll, |
1da177e4 | 2681 | .ioctl = irda_ioctl, |
f6c90b71 PV |
2682 | #ifdef CONFIG_COMPAT |
2683 | .compat_ioctl = irda_compat_ioctl, | |
2684 | #endif | |
1da177e4 LT |
2685 | .listen = sock_no_listen, |
2686 | .shutdown = irda_shutdown, | |
2687 | .setsockopt = irda_setsockopt, | |
2688 | .getsockopt = irda_getsockopt, | |
2689 | .sendmsg = irda_sendmsg_ultra, | |
2690 | .recvmsg = irda_recvmsg_dgram, | |
2691 | .mmap = sock_no_mmap, | |
2692 | .sendpage = sock_no_sendpage, | |
2693 | }; | |
2694 | #endif /* CONFIG_IRDA_ULTRA */ | |
2695 | ||
1da177e4 LT |
2696 | /* |
2697 | * Function irsock_init (pro) | |
2698 | * | |
2699 | * Initialize IrDA protocol | |
2700 | * | |
2701 | */ | |
2702 | int __init irsock_init(void) | |
2703 | { | |
2704 | int rc = proto_register(&irda_proto, 0); | |
2705 | ||
2706 | if (rc == 0) | |
2707 | rc = sock_register(&irda_family_ops); | |
2708 | ||
2709 | return rc; | |
2710 | } | |
2711 | ||
2712 | /* | |
2713 | * Function irsock_cleanup (void) | |
2714 | * | |
2715 | * Remove IrDA protocol | |
2716 | * | |
2717 | */ | |
75a69ac6 | 2718 | void irsock_cleanup(void) |
1da177e4 LT |
2719 | { |
2720 | sock_unregister(PF_IRDA); | |
2721 | proto_unregister(&irda_proto); | |
2722 | } |