Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /********************************************************************* |
6819bc2e | 2 | * |
1da177e4 | 3 | * Filename: ircomm_tty_attach.c |
6819bc2e | 4 | * Version: |
1da177e4 LT |
5 | * Description: Code for attaching the serial driver to IrCOMM |
6 | * Status: Experimental. | |
7 | * Author: Dag Brattli <dagb@cs.uit.no> | |
8 | * Created at: Sat Jun 5 17:42:00 1999 | |
9 | * Modified at: Tue Jan 4 14:20:49 2000 | |
10 | * Modified by: Dag Brattli <dagb@cs.uit.no> | |
6819bc2e | 11 | * |
1da177e4 LT |
12 | * Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved. |
13 | * Copyright (c) 2000-2003 Jean Tourrilhes <jt@hpl.hp.com> | |
6819bc2e YH |
14 | * |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License as | |
17 | * published by the Free Software Foundation; either version 2 of | |
1da177e4 | 18 | * the License, or (at your option) any later version. |
6819bc2e | 19 | * |
1da177e4 LT |
20 | * This program is distributed in the hope that it will be useful, |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
6819bc2e YH |
24 | * |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
1da177e4 | 28 | * MA 02111-1307 USA |
6819bc2e | 29 | * |
1da177e4 LT |
30 | ********************************************************************/ |
31 | ||
1da177e4 LT |
32 | #include <linux/init.h> |
33 | ||
34 | #include <net/irda/irda.h> | |
35 | #include <net/irda/irlmp.h> | |
36 | #include <net/irda/iriap.h> | |
37 | #include <net/irda/irttp.h> | |
38 | #include <net/irda/irias_object.h> | |
39 | #include <net/irda/parameters.h> | |
40 | ||
41 | #include <net/irda/ircomm_core.h> | |
42 | #include <net/irda/ircomm_param.h> | |
43 | #include <net/irda/ircomm_event.h> | |
44 | ||
45 | #include <net/irda/ircomm_tty.h> | |
46 | #include <net/irda/ircomm_tty_attach.h> | |
47 | ||
48 | static void ircomm_tty_ias_register(struct ircomm_tty_cb *self); | |
49 | static void ircomm_tty_discovery_indication(discinfo_t *discovery, | |
50 | DISCOVERY_MODE mode, | |
51 | void *priv); | |
6819bc2e | 52 | static void ircomm_tty_getvalue_confirm(int result, __u16 obj_id, |
1da177e4 LT |
53 | struct ias_value *value, void *priv); |
54 | static void ircomm_tty_start_watchdog_timer(struct ircomm_tty_cb *self, | |
55 | int timeout); | |
56 | static void ircomm_tty_watchdog_timer_expired(void *data); | |
57 | ||
6819bc2e YH |
58 | static int ircomm_tty_state_idle(struct ircomm_tty_cb *self, |
59 | IRCOMM_TTY_EVENT event, | |
60 | struct sk_buff *skb, | |
1da177e4 | 61 | struct ircomm_tty_info *info); |
6819bc2e YH |
62 | static int ircomm_tty_state_search(struct ircomm_tty_cb *self, |
63 | IRCOMM_TTY_EVENT event, | |
64 | struct sk_buff *skb, | |
1da177e4 | 65 | struct ircomm_tty_info *info); |
6819bc2e YH |
66 | static int ircomm_tty_state_query_parameters(struct ircomm_tty_cb *self, |
67 | IRCOMM_TTY_EVENT event, | |
68 | struct sk_buff *skb, | |
1da177e4 | 69 | struct ircomm_tty_info *info); |
6819bc2e YH |
70 | static int ircomm_tty_state_query_lsap_sel(struct ircomm_tty_cb *self, |
71 | IRCOMM_TTY_EVENT event, | |
72 | struct sk_buff *skb, | |
1da177e4 | 73 | struct ircomm_tty_info *info); |
6819bc2e YH |
74 | static int ircomm_tty_state_setup(struct ircomm_tty_cb *self, |
75 | IRCOMM_TTY_EVENT event, | |
76 | struct sk_buff *skb, | |
1da177e4 | 77 | struct ircomm_tty_info *info); |
6819bc2e YH |
78 | static int ircomm_tty_state_ready(struct ircomm_tty_cb *self, |
79 | IRCOMM_TTY_EVENT event, | |
80 | struct sk_buff *skb, | |
1da177e4 LT |
81 | struct ircomm_tty_info *info); |
82 | ||
83 | char *ircomm_tty_state[] = { | |
84 | "IRCOMM_TTY_IDLE", | |
85 | "IRCOMM_TTY_SEARCH", | |
86 | "IRCOMM_TTY_QUERY_PARAMETERS", | |
87 | "IRCOMM_TTY_QUERY_LSAP_SEL", | |
88 | "IRCOMM_TTY_SETUP", | |
89 | "IRCOMM_TTY_READY", | |
90 | "*** ERROR *** ", | |
91 | }; | |
92 | ||
93 | #ifdef CONFIG_IRDA_DEBUG | |
94 | static char *ircomm_tty_event[] = { | |
95 | "IRCOMM_TTY_ATTACH_CABLE", | |
96 | "IRCOMM_TTY_DETACH_CABLE", | |
97 | "IRCOMM_TTY_DATA_REQUEST", | |
98 | "IRCOMM_TTY_DATA_INDICATION", | |
99 | "IRCOMM_TTY_DISCOVERY_REQUEST", | |
100 | "IRCOMM_TTY_DISCOVERY_INDICATION", | |
101 | "IRCOMM_TTY_CONNECT_CONFIRM", | |
102 | "IRCOMM_TTY_CONNECT_INDICATION", | |
103 | "IRCOMM_TTY_DISCONNECT_REQUEST", | |
104 | "IRCOMM_TTY_DISCONNECT_INDICATION", | |
105 | "IRCOMM_TTY_WD_TIMER_EXPIRED", | |
106 | "IRCOMM_TTY_GOT_PARAMETERS", | |
107 | "IRCOMM_TTY_GOT_LSAPSEL", | |
108 | "*** ERROR ****", | |
109 | }; | |
110 | #endif /* CONFIG_IRDA_DEBUG */ | |
111 | ||
112 | static int (*state[])(struct ircomm_tty_cb *self, IRCOMM_TTY_EVENT event, | |
6819bc2e | 113 | struct sk_buff *skb, struct ircomm_tty_info *info) = |
1da177e4 LT |
114 | { |
115 | ircomm_tty_state_idle, | |
116 | ircomm_tty_state_search, | |
117 | ircomm_tty_state_query_parameters, | |
118 | ircomm_tty_state_query_lsap_sel, | |
119 | ircomm_tty_state_setup, | |
120 | ircomm_tty_state_ready, | |
121 | }; | |
122 | ||
123 | /* | |
124 | * Function ircomm_tty_attach_cable (driver) | |
125 | * | |
126 | * Try to attach cable (IrCOMM link). This function will only return | |
6819bc2e | 127 | * when the link has been connected, or if an error condition occurs. |
1da177e4 LT |
128 | * If success, the return value is the resulting service type. |
129 | */ | |
130 | int ircomm_tty_attach_cable(struct ircomm_tty_cb *self) | |
131 | { | |
0dc47877 | 132 | IRDA_DEBUG(0, "%s()\n", __func__ ); |
1da177e4 LT |
133 | |
134 | IRDA_ASSERT(self != NULL, return -1;); | |
135 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); | |
136 | ||
6819bc2e | 137 | /* Check if somebody has already connected to us */ |
1da177e4 | 138 | if (ircomm_is_connected(self->ircomm)) { |
0dc47877 | 139 | IRDA_DEBUG(0, "%s(), already connected!\n", __func__ ); |
1da177e4 LT |
140 | return 0; |
141 | } | |
142 | ||
143 | /* Make sure nobody tries to write before the link is up */ | |
144 | self->tty->hw_stopped = 1; | |
145 | ||
146 | ircomm_tty_ias_register(self); | |
147 | ||
148 | ircomm_tty_do_event(self, IRCOMM_TTY_ATTACH_CABLE, NULL, NULL); | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | /* | |
154 | * Function ircomm_detach_cable (driver) | |
155 | * | |
156 | * Detach cable, or cable has been detached by peer | |
157 | * | |
158 | */ | |
159 | void ircomm_tty_detach_cable(struct ircomm_tty_cb *self) | |
160 | { | |
0dc47877 | 161 | IRDA_DEBUG(0, "%s()\n", __func__ ); |
1da177e4 LT |
162 | |
163 | IRDA_ASSERT(self != NULL, return;); | |
164 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
165 | ||
166 | del_timer(&self->watchdog_timer); | |
167 | ||
168 | /* Remove discovery handler */ | |
169 | if (self->ckey) { | |
170 | irlmp_unregister_client(self->ckey); | |
171 | self->ckey = NULL; | |
172 | } | |
173 | /* Remove IrCOMM hint bits */ | |
174 | if (self->skey) { | |
175 | irlmp_unregister_service(self->skey); | |
176 | self->skey = NULL; | |
177 | } | |
178 | ||
6819bc2e | 179 | if (self->iriap) { |
1da177e4 LT |
180 | iriap_close(self->iriap); |
181 | self->iriap = NULL; | |
182 | } | |
183 | ||
184 | /* Remove LM-IAS object */ | |
185 | if (self->obj) { | |
186 | irias_delete_object(self->obj); | |
187 | self->obj = NULL; | |
188 | } | |
189 | ||
190 | ircomm_tty_do_event(self, IRCOMM_TTY_DETACH_CABLE, NULL, NULL); | |
191 | ||
192 | /* Reset some values */ | |
193 | self->daddr = self->saddr = 0; | |
194 | self->dlsap_sel = self->slsap_sel = 0; | |
195 | ||
196 | memset(&self->settings, 0, sizeof(struct ircomm_params)); | |
197 | } | |
198 | ||
199 | /* | |
200 | * Function ircomm_tty_ias_register (self) | |
201 | * | |
202 | * Register with LM-IAS depending on which service type we are | |
203 | * | |
204 | */ | |
205 | static void ircomm_tty_ias_register(struct ircomm_tty_cb *self) | |
206 | { | |
207 | __u8 oct_seq[6]; | |
208 | __u16 hints; | |
209 | ||
0dc47877 | 210 | IRDA_DEBUG(0, "%s()\n", __func__ ); |
1da177e4 LT |
211 | |
212 | IRDA_ASSERT(self != NULL, return;); | |
213 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
6819bc2e | 214 | |
1da177e4 LT |
215 | /* Compute hint bits based on service */ |
216 | hints = irlmp_service_to_hint(S_COMM); | |
217 | if (self->service_type & IRCOMM_3_WIRE_RAW) | |
218 | hints |= irlmp_service_to_hint(S_PRINTER); | |
219 | ||
220 | /* Advertise IrCOMM hint bit in discovery */ | |
221 | if (!self->skey) | |
222 | self->skey = irlmp_register_service(hints); | |
223 | /* Set up a discovery handler */ | |
224 | if (!self->ckey) | |
225 | self->ckey = irlmp_register_client(hints, | |
226 | ircomm_tty_discovery_indication, | |
227 | NULL, (void *) self); | |
228 | ||
229 | /* If already done, no need to do it again */ | |
230 | if (self->obj) | |
231 | return; | |
232 | ||
233 | if (self->service_type & IRCOMM_3_WIRE_RAW) { | |
234 | /* Register IrLPT with LM-IAS */ | |
235 | self->obj = irias_new_object("IrLPT", IAS_IRLPT_ID); | |
6819bc2e | 236 | irias_add_integer_attrib(self->obj, "IrDA:IrLMP:LsapSel", |
1da177e4 LT |
237 | self->slsap_sel, IAS_KERNEL_ATTR); |
238 | } else { | |
239 | /* Register IrCOMM with LM-IAS */ | |
240 | self->obj = irias_new_object("IrDA:IrCOMM", IAS_IRCOMM_ID); | |
6819bc2e | 241 | irias_add_integer_attrib(self->obj, "IrDA:TinyTP:LsapSel", |
1da177e4 | 242 | self->slsap_sel, IAS_KERNEL_ATTR); |
6819bc2e | 243 | |
1da177e4 | 244 | /* Code the parameters into the buffer */ |
6819bc2e | 245 | irda_param_pack(oct_seq, "bbbbbb", |
1da177e4 LT |
246 | IRCOMM_SERVICE_TYPE, 1, self->service_type, |
247 | IRCOMM_PORT_TYPE, 1, IRCOMM_SERIAL); | |
6819bc2e | 248 | |
1da177e4 LT |
249 | /* Register parameters with LM-IAS */ |
250 | irias_add_octseq_attrib(self->obj, "Parameters", oct_seq, 6, | |
251 | IAS_KERNEL_ATTR); | |
252 | } | |
253 | irias_insert_object(self->obj); | |
254 | } | |
255 | ||
256 | /* | |
257 | * Function ircomm_tty_ias_unregister (self) | |
258 | * | |
259 | * Remove our IAS object and client hook while connected. | |
260 | * | |
261 | */ | |
262 | static void ircomm_tty_ias_unregister(struct ircomm_tty_cb *self) | |
263 | { | |
264 | /* Remove LM-IAS object now so it is not reused. | |
265 | * IrCOMM deals very poorly with multiple incoming connections. | |
266 | * It should looks a lot more like IrNET, and "dup" a server TSAP | |
267 | * to the application TSAP (based on various rules). | |
268 | * This is a cheap workaround allowing multiple clients to | |
269 | * connect to us. It will not always work. | |
270 | * Each IrCOMM socket has an IAS entry. Incoming connection will | |
271 | * pick the first one found. So, when we are fully connected, | |
272 | * we remove our IAS entries so that the next IAS entry is used. | |
273 | * We do that for *both* client and server, because a server | |
274 | * can also create client instances. | |
275 | * Jean II */ | |
276 | if (self->obj) { | |
277 | irias_delete_object(self->obj); | |
278 | self->obj = NULL; | |
279 | } | |
280 | ||
281 | #if 0 | |
282 | /* Remove discovery handler. | |
283 | * While we are connected, we no longer need to receive | |
284 | * discovery events. This would be the case if there is | |
285 | * multiple IrLAP interfaces. Jean II */ | |
286 | if (self->ckey) { | |
287 | irlmp_unregister_client(self->ckey); | |
288 | self->ckey = NULL; | |
289 | } | |
290 | #endif | |
291 | } | |
292 | ||
293 | /* | |
294 | * Function ircomm_send_initial_parameters (self) | |
295 | * | |
296 | * Send initial parameters to the remote IrCOMM device. These parameters | |
297 | * must be sent before any data. | |
298 | */ | |
299 | int ircomm_tty_send_initial_parameters(struct ircomm_tty_cb *self) | |
300 | { | |
301 | IRDA_ASSERT(self != NULL, return -1;); | |
302 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); | |
303 | ||
6819bc2e | 304 | if (self->service_type & IRCOMM_3_WIRE_RAW) |
1da177e4 LT |
305 | return 0; |
306 | ||
6819bc2e YH |
307 | /* |
308 | * Set default values, but only if the application for some reason | |
1da177e4 LT |
309 | * haven't set them already |
310 | */ | |
0dc47877 | 311 | IRDA_DEBUG(2, "%s(), data-rate = %d\n", __func__ , |
1da177e4 LT |
312 | self->settings.data_rate); |
313 | if (!self->settings.data_rate) | |
314 | self->settings.data_rate = 9600; | |
0dc47877 | 315 | IRDA_DEBUG(2, "%s(), data-format = %d\n", __func__ , |
1da177e4 LT |
316 | self->settings.data_format); |
317 | if (!self->settings.data_format) | |
318 | self->settings.data_format = IRCOMM_WSIZE_8; /* 8N1 */ | |
319 | ||
0dc47877 | 320 | IRDA_DEBUG(2, "%s(), flow-control = %d\n", __func__ , |
1da177e4 LT |
321 | self->settings.flow_control); |
322 | /*self->settings.flow_control = IRCOMM_RTS_CTS_IN|IRCOMM_RTS_CTS_OUT;*/ | |
323 | ||
324 | /* Do not set delta values for the initial parameters */ | |
325 | self->settings.dte = IRCOMM_DTR | IRCOMM_RTS; | |
326 | ||
327 | /* Only send service type parameter when we are the client */ | |
328 | if (self->client) | |
329 | ircomm_param_request(self, IRCOMM_SERVICE_TYPE, FALSE); | |
330 | ircomm_param_request(self, IRCOMM_DATA_RATE, FALSE); | |
331 | ircomm_param_request(self, IRCOMM_DATA_FORMAT, FALSE); | |
6819bc2e | 332 | |
1da177e4 LT |
333 | /* For a 3 wire service, we just flush the last parameter and return */ |
334 | if (self->settings.service_type == IRCOMM_3_WIRE) { | |
335 | ircomm_param_request(self, IRCOMM_FLOW_CONTROL, TRUE); | |
336 | return 0; | |
337 | } | |
338 | ||
339 | /* Only 9-wire service types continue here */ | |
340 | ircomm_param_request(self, IRCOMM_FLOW_CONTROL, FALSE); | |
341 | #if 0 | |
342 | ircomm_param_request(self, IRCOMM_XON_XOFF, FALSE); | |
343 | ircomm_param_request(self, IRCOMM_ENQ_ACK, FALSE); | |
6819bc2e | 344 | #endif |
1da177e4 LT |
345 | /* Notify peer that we are ready to receive data */ |
346 | ircomm_param_request(self, IRCOMM_DTE, TRUE); | |
6819bc2e | 347 | |
1da177e4 LT |
348 | return 0; |
349 | } | |
350 | ||
351 | /* | |
352 | * Function ircomm_tty_discovery_indication (discovery) | |
353 | * | |
354 | * Remote device is discovered, try query the remote IAS to see which | |
355 | * device it is, and which services it has. | |
356 | * | |
357 | */ | |
358 | static void ircomm_tty_discovery_indication(discinfo_t *discovery, | |
359 | DISCOVERY_MODE mode, | |
360 | void *priv) | |
361 | { | |
362 | struct ircomm_tty_cb *self; | |
363 | struct ircomm_tty_info info; | |
364 | ||
0dc47877 | 365 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
366 | |
367 | /* Important note : | |
368 | * We need to drop all passive discoveries. | |
369 | * The LSAP management of IrComm is deficient and doesn't deal | |
370 | * with the case of two instance connecting to each other | |
371 | * simultaneously (it will deadlock in LMP). | |
372 | * The proper fix would be to use the same technique as in IrNET, | |
373 | * to have one server socket and separate instances for the | |
374 | * connecting/connected socket. | |
375 | * The workaround is to drop passive discovery, which drastically | |
376 | * reduce the probability of this happening. | |
377 | * Jean II */ | |
378 | if(mode == DISCOVERY_PASSIVE) | |
379 | return; | |
380 | ||
381 | info.daddr = discovery->daddr; | |
382 | info.saddr = discovery->saddr; | |
383 | ||
c310f099 RR |
384 | self = (struct ircomm_tty_cb *) priv; |
385 | ircomm_tty_do_event(self, IRCOMM_TTY_DISCOVERY_INDICATION, | |
386 | NULL, &info); | |
1da177e4 LT |
387 | } |
388 | ||
389 | /* | |
390 | * Function ircomm_tty_disconnect_indication (instance, sap, reason, skb) | |
391 | * | |
392 | * Link disconnected | |
393 | * | |
394 | */ | |
6819bc2e | 395 | void ircomm_tty_disconnect_indication(void *instance, void *sap, |
1da177e4 LT |
396 | LM_REASON reason, |
397 | struct sk_buff *skb) | |
398 | { | |
399 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; | |
400 | ||
0dc47877 | 401 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
402 | |
403 | IRDA_ASSERT(self != NULL, return;); | |
404 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
405 | ||
406 | if (!self->tty) | |
407 | return; | |
408 | ||
409 | /* This will stop control data transfers */ | |
410 | self->flow = FLOW_STOP; | |
411 | ||
412 | /* Stop data transfers */ | |
413 | self->tty->hw_stopped = 1; | |
414 | ||
6819bc2e | 415 | ircomm_tty_do_event(self, IRCOMM_TTY_DISCONNECT_INDICATION, NULL, |
1da177e4 LT |
416 | NULL); |
417 | } | |
418 | ||
419 | /* | |
420 | * Function ircomm_tty_getvalue_confirm (result, obj_id, value, priv) | |
421 | * | |
422 | * Got result from the IAS query we make | |
423 | * | |
424 | */ | |
6819bc2e YH |
425 | static void ircomm_tty_getvalue_confirm(int result, __u16 obj_id, |
426 | struct ias_value *value, | |
1da177e4 LT |
427 | void *priv) |
428 | { | |
429 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) priv; | |
430 | ||
0dc47877 | 431 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
432 | |
433 | IRDA_ASSERT(self != NULL, return;); | |
434 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
435 | ||
436 | /* We probably don't need to make any more queries */ | |
437 | iriap_close(self->iriap); | |
438 | self->iriap = NULL; | |
439 | ||
440 | /* Check if request succeeded */ | |
441 | if (result != IAS_SUCCESS) { | |
0dc47877 | 442 | IRDA_DEBUG(4, "%s(), got NULL value!\n", __func__ ); |
1da177e4 LT |
443 | return; |
444 | } | |
445 | ||
446 | switch (value->type) { | |
6819bc2e | 447 | case IAS_OCT_SEQ: |
0dc47877 | 448 | IRDA_DEBUG(2, "%s(), got octet sequence\n", __func__ ); |
1da177e4 LT |
449 | |
450 | irda_param_extract_all(self, value->t.oct_seq, value->len, | |
451 | &ircomm_param_info); | |
452 | ||
6819bc2e | 453 | ircomm_tty_do_event(self, IRCOMM_TTY_GOT_PARAMETERS, NULL, |
1da177e4 LT |
454 | NULL); |
455 | break; | |
456 | case IAS_INTEGER: | |
6819bc2e | 457 | /* Got LSAP selector */ |
0dc47877 | 458 | IRDA_DEBUG(2, "%s(), got lsapsel = %d\n", __func__ , |
1da177e4 LT |
459 | value->t.integer); |
460 | ||
461 | if (value->t.integer == -1) { | |
0dc47877 | 462 | IRDA_DEBUG(0, "%s(), invalid value!\n", __func__ ); |
1da177e4 LT |
463 | } else |
464 | self->dlsap_sel = value->t.integer; | |
465 | ||
466 | ircomm_tty_do_event(self, IRCOMM_TTY_GOT_LSAPSEL, NULL, NULL); | |
467 | break; | |
468 | case IAS_MISSING: | |
0dc47877 | 469 | IRDA_DEBUG(0, "%s(), got IAS_MISSING\n", __func__ ); |
1da177e4 LT |
470 | break; |
471 | default: | |
0dc47877 | 472 | IRDA_DEBUG(0, "%s(), got unknown type!\n", __func__ ); |
1da177e4 LT |
473 | break; |
474 | } | |
475 | irias_delete_value(value); | |
476 | } | |
477 | ||
478 | /* | |
479 | * Function ircomm_tty_connect_confirm (instance, sap, qos, max_sdu_size, skb) | |
480 | * | |
481 | * Connection confirmed | |
482 | * | |
483 | */ | |
6819bc2e YH |
484 | void ircomm_tty_connect_confirm(void *instance, void *sap, |
485 | struct qos_info *qos, | |
486 | __u32 max_data_size, | |
487 | __u8 max_header_size, | |
1da177e4 LT |
488 | struct sk_buff *skb) |
489 | { | |
490 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; | |
491 | ||
0dc47877 | 492 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
493 | |
494 | IRDA_ASSERT(self != NULL, return;); | |
495 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
496 | ||
497 | self->client = TRUE; | |
498 | self->max_data_size = max_data_size; | |
499 | self->max_header_size = max_header_size; | |
500 | self->flow = FLOW_START; | |
501 | ||
502 | ircomm_tty_do_event(self, IRCOMM_TTY_CONNECT_CONFIRM, NULL, NULL); | |
503 | ||
504 | /* No need to kfree_skb - see ircomm_ttp_connect_confirm() */ | |
505 | } | |
506 | ||
507 | /* | |
6819bc2e | 508 | * Function ircomm_tty_connect_indication (instance, sap, qos, max_sdu_size, |
1da177e4 LT |
509 | * skb) |
510 | * | |
511 | * we are discovered and being requested to connect by remote device ! | |
512 | * | |
513 | */ | |
6819bc2e YH |
514 | void ircomm_tty_connect_indication(void *instance, void *sap, |
515 | struct qos_info *qos, | |
1da177e4 | 516 | __u32 max_data_size, |
6819bc2e | 517 | __u8 max_header_size, |
1da177e4 LT |
518 | struct sk_buff *skb) |
519 | { | |
520 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; | |
521 | int clen; | |
522 | ||
0dc47877 | 523 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
524 | |
525 | IRDA_ASSERT(self != NULL, return;); | |
526 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
527 | ||
528 | self->client = FALSE; | |
529 | self->max_data_size = max_data_size; | |
530 | self->max_header_size = max_header_size; | |
531 | self->flow = FLOW_START; | |
532 | ||
533 | clen = skb->data[0]; | |
534 | if (clen) | |
6819bc2e YH |
535 | irda_param_extract_all(self, skb->data+1, |
536 | IRDA_MIN(skb->len, clen), | |
1da177e4 LT |
537 | &ircomm_param_info); |
538 | ||
539 | ircomm_tty_do_event(self, IRCOMM_TTY_CONNECT_INDICATION, NULL, NULL); | |
540 | ||
541 | /* No need to kfree_skb - see ircomm_ttp_connect_indication() */ | |
542 | } | |
543 | ||
544 | /* | |
545 | * Function ircomm_tty_link_established (self) | |
546 | * | |
547 | * Called when the IrCOMM link is established | |
548 | * | |
549 | */ | |
550 | void ircomm_tty_link_established(struct ircomm_tty_cb *self) | |
551 | { | |
0dc47877 | 552 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
553 | |
554 | IRDA_ASSERT(self != NULL, return;); | |
555 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
556 | ||
557 | if (!self->tty) | |
558 | return; | |
6819bc2e | 559 | |
1da177e4 LT |
560 | del_timer(&self->watchdog_timer); |
561 | ||
6819bc2e | 562 | /* |
1da177e4 LT |
563 | * IrCOMM link is now up, and if we are not using hardware |
564 | * flow-control, then declare the hardware as running. Otherwise we | |
565 | * will have to wait for the peer device (DCE) to raise the CTS | |
6819bc2e | 566 | * line. |
1da177e4 LT |
567 | */ |
568 | if ((self->flags & ASYNC_CTS_FLOW) && ((self->settings.dce & IRCOMM_CTS) == 0)) { | |
0dc47877 | 569 | IRDA_DEBUG(0, "%s(), waiting for CTS ...\n", __func__ ); |
1da177e4 LT |
570 | return; |
571 | } else { | |
0dc47877 | 572 | IRDA_DEBUG(1, "%s(), starting hardware!\n", __func__ ); |
1da177e4 LT |
573 | |
574 | self->tty->hw_stopped = 0; | |
6819bc2e | 575 | |
1da177e4 LT |
576 | /* Wake up processes blocked on open */ |
577 | wake_up_interruptible(&self->open_wait); | |
578 | } | |
579 | ||
580 | schedule_work(&self->tqueue); | |
581 | } | |
582 | ||
583 | /* | |
584 | * Function ircomm_tty_start_watchdog_timer (self, timeout) | |
585 | * | |
6819bc2e YH |
586 | * Start the watchdog timer. This timer is used to make sure that any |
587 | * connection attempt is successful, and if not, we will retry after | |
1da177e4 LT |
588 | * the timeout |
589 | */ | |
590 | static void ircomm_tty_start_watchdog_timer(struct ircomm_tty_cb *self, | |
591 | int timeout) | |
592 | { | |
593 | IRDA_ASSERT(self != NULL, return;); | |
594 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
595 | ||
596 | irda_start_timer(&self->watchdog_timer, timeout, (void *) self, | |
597 | ircomm_tty_watchdog_timer_expired); | |
598 | } | |
599 | ||
600 | /* | |
601 | * Function ircomm_tty_watchdog_timer_expired (data) | |
602 | * | |
603 | * Called when the connect procedure have taken to much time. | |
604 | * | |
605 | */ | |
606 | static void ircomm_tty_watchdog_timer_expired(void *data) | |
607 | { | |
608 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) data; | |
6819bc2e | 609 | |
0dc47877 | 610 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
611 | |
612 | IRDA_ASSERT(self != NULL, return;); | |
613 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
614 | ||
615 | ircomm_tty_do_event(self, IRCOMM_TTY_WD_TIMER_EXPIRED, NULL, NULL); | |
616 | } | |
617 | ||
618 | ||
619 | /* | |
620 | * Function ircomm_tty_do_event (self, event, skb) | |
621 | * | |
622 | * Process event | |
623 | * | |
624 | */ | |
625 | int ircomm_tty_do_event(struct ircomm_tty_cb *self, IRCOMM_TTY_EVENT event, | |
6819bc2e | 626 | struct sk_buff *skb, struct ircomm_tty_info *info) |
1da177e4 LT |
627 | { |
628 | IRDA_ASSERT(self != NULL, return -1;); | |
629 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); | |
630 | ||
0dc47877 | 631 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 | 632 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
6819bc2e | 633 | |
1da177e4 LT |
634 | return (*state[self->state])(self, event, skb, info); |
635 | } | |
636 | ||
637 | /* | |
638 | * Function ircomm_tty_next_state (self, state) | |
639 | * | |
640 | * Switch state | |
641 | * | |
642 | */ | |
643 | static inline void ircomm_tty_next_state(struct ircomm_tty_cb *self, IRCOMM_TTY_STATE state) | |
644 | { | |
645 | /* | |
646 | IRDA_ASSERT(self != NULL, return;); | |
647 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
648 | ||
0dc47877 | 649 | IRDA_DEBUG(2, "%s: next state=%s, service type=%d\n", __func__ , |
1da177e4 LT |
650 | ircomm_tty_state[self->state], self->service_type); |
651 | */ | |
652 | self->state = state; | |
653 | } | |
654 | ||
655 | /* | |
656 | * Function ircomm_tty_state_idle (self, event, skb, info) | |
657 | * | |
658 | * Just hanging around | |
659 | * | |
660 | */ | |
6819bc2e YH |
661 | static int ircomm_tty_state_idle(struct ircomm_tty_cb *self, |
662 | IRCOMM_TTY_EVENT event, | |
663 | struct sk_buff *skb, | |
1da177e4 LT |
664 | struct ircomm_tty_info *info) |
665 | { | |
666 | int ret = 0; | |
667 | ||
0dc47877 | 668 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
669 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
670 | switch (event) { | |
671 | case IRCOMM_TTY_ATTACH_CABLE: | |
6819bc2e | 672 | /* Try to discover any remote devices */ |
1da177e4 LT |
673 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
674 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
6819bc2e | 675 | |
1da177e4 LT |
676 | irlmp_discovery_request(DISCOVERY_DEFAULT_SLOTS); |
677 | break; | |
678 | case IRCOMM_TTY_DISCOVERY_INDICATION: | |
679 | self->daddr = info->daddr; | |
680 | self->saddr = info->saddr; | |
681 | ||
682 | if (self->iriap) { | |
683 | IRDA_WARNING("%s(), busy with a previous query\n", | |
0dc47877 | 684 | __func__); |
1da177e4 LT |
685 | return -EBUSY; |
686 | } | |
687 | ||
688 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, | |
689 | ircomm_tty_getvalue_confirm); | |
690 | ||
691 | iriap_getvaluebyclass_request(self->iriap, | |
692 | self->saddr, self->daddr, | |
693 | "IrDA:IrCOMM", "Parameters"); | |
6819bc2e | 694 | |
1da177e4 LT |
695 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
696 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_PARAMETERS); | |
697 | break; | |
698 | case IRCOMM_TTY_CONNECT_INDICATION: | |
699 | del_timer(&self->watchdog_timer); | |
700 | ||
701 | /* Accept connection */ | |
702 | ircomm_connect_response(self->ircomm, NULL); | |
703 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
704 | break; | |
705 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
706 | /* Just stay idle */ | |
707 | break; | |
708 | case IRCOMM_TTY_DETACH_CABLE: | |
709 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
710 | break; | |
711 | default: | |
0dc47877 | 712 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
713 | ircomm_tty_event[event]); |
714 | ret = -EINVAL; | |
715 | } | |
716 | return ret; | |
717 | } | |
718 | ||
719 | /* | |
720 | * Function ircomm_tty_state_search (self, event, skb, info) | |
721 | * | |
722 | * Trying to discover an IrCOMM device | |
723 | * | |
724 | */ | |
6819bc2e YH |
725 | static int ircomm_tty_state_search(struct ircomm_tty_cb *self, |
726 | IRCOMM_TTY_EVENT event, | |
727 | struct sk_buff *skb, | |
1da177e4 LT |
728 | struct ircomm_tty_info *info) |
729 | { | |
730 | int ret = 0; | |
731 | ||
0dc47877 | 732 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
733 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
734 | ||
735 | switch (event) { | |
736 | case IRCOMM_TTY_DISCOVERY_INDICATION: | |
737 | self->daddr = info->daddr; | |
738 | self->saddr = info->saddr; | |
739 | ||
740 | if (self->iriap) { | |
741 | IRDA_WARNING("%s(), busy with a previous query\n", | |
0dc47877 | 742 | __func__); |
1da177e4 LT |
743 | return -EBUSY; |
744 | } | |
6819bc2e | 745 | |
1da177e4 LT |
746 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
747 | ircomm_tty_getvalue_confirm); | |
6819bc2e | 748 | |
1da177e4 LT |
749 | if (self->service_type == IRCOMM_3_WIRE_RAW) { |
750 | iriap_getvaluebyclass_request(self->iriap, self->saddr, | |
6819bc2e | 751 | self->daddr, "IrLPT", |
1da177e4 LT |
752 | "IrDA:IrLMP:LsapSel"); |
753 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_LSAP_SEL); | |
754 | } else { | |
755 | iriap_getvaluebyclass_request(self->iriap, self->saddr, | |
6819bc2e YH |
756 | self->daddr, |
757 | "IrDA:IrCOMM", | |
1da177e4 LT |
758 | "Parameters"); |
759 | ||
760 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_PARAMETERS); | |
761 | } | |
762 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
763 | break; | |
764 | case IRCOMM_TTY_CONNECT_INDICATION: | |
765 | del_timer(&self->watchdog_timer); | |
766 | ircomm_tty_ias_unregister(self); | |
767 | ||
768 | /* Accept connection */ | |
769 | ircomm_connect_response(self->ircomm, NULL); | |
770 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
771 | break; | |
772 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
773 | #if 1 | |
774 | /* Give up */ | |
775 | #else | |
6819bc2e | 776 | /* Try to discover any remote devices */ |
1da177e4 LT |
777 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
778 | irlmp_discovery_request(DISCOVERY_DEFAULT_SLOTS); | |
779 | #endif | |
780 | break; | |
781 | case IRCOMM_TTY_DETACH_CABLE: | |
782 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
783 | break; | |
784 | default: | |
0dc47877 | 785 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
786 | ircomm_tty_event[event]); |
787 | ret = -EINVAL; | |
788 | } | |
789 | return ret; | |
790 | } | |
791 | ||
792 | /* | |
793 | * Function ircomm_tty_state_query (self, event, skb, info) | |
794 | * | |
795 | * Querying the remote LM-IAS for IrCOMM parameters | |
796 | * | |
797 | */ | |
6819bc2e YH |
798 | static int ircomm_tty_state_query_parameters(struct ircomm_tty_cb *self, |
799 | IRCOMM_TTY_EVENT event, | |
800 | struct sk_buff *skb, | |
1da177e4 LT |
801 | struct ircomm_tty_info *info) |
802 | { | |
803 | int ret = 0; | |
804 | ||
0dc47877 | 805 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
806 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
807 | ||
808 | switch (event) { | |
809 | case IRCOMM_TTY_GOT_PARAMETERS: | |
810 | if (self->iriap) { | |
811 | IRDA_WARNING("%s(), busy with a previous query\n", | |
0dc47877 | 812 | __func__); |
1da177e4 LT |
813 | return -EBUSY; |
814 | } | |
6819bc2e | 815 | |
1da177e4 LT |
816 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
817 | ircomm_tty_getvalue_confirm); | |
818 | ||
6819bc2e YH |
819 | iriap_getvaluebyclass_request(self->iriap, self->saddr, |
820 | self->daddr, "IrDA:IrCOMM", | |
1da177e4 LT |
821 | "IrDA:TinyTP:LsapSel"); |
822 | ||
823 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
824 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_LSAP_SEL); | |
825 | break; | |
826 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
827 | /* Go back to search mode */ | |
828 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
6819bc2e | 829 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
1da177e4 LT |
830 | break; |
831 | case IRCOMM_TTY_CONNECT_INDICATION: | |
832 | del_timer(&self->watchdog_timer); | |
833 | ircomm_tty_ias_unregister(self); | |
834 | ||
835 | /* Accept connection */ | |
836 | ircomm_connect_response(self->ircomm, NULL); | |
837 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
838 | break; | |
839 | case IRCOMM_TTY_DETACH_CABLE: | |
840 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
841 | break; | |
842 | default: | |
0dc47877 | 843 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
844 | ircomm_tty_event[event]); |
845 | ret = -EINVAL; | |
846 | } | |
847 | return ret; | |
848 | } | |
849 | ||
850 | /* | |
851 | * Function ircomm_tty_state_query_lsap_sel (self, event, skb, info) | |
852 | * | |
853 | * Query remote LM-IAS for the LSAP selector which we can connect to | |
854 | * | |
855 | */ | |
6819bc2e YH |
856 | static int ircomm_tty_state_query_lsap_sel(struct ircomm_tty_cb *self, |
857 | IRCOMM_TTY_EVENT event, | |
858 | struct sk_buff *skb, | |
1da177e4 LT |
859 | struct ircomm_tty_info *info) |
860 | { | |
861 | int ret = 0; | |
862 | ||
0dc47877 | 863 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
864 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
865 | ||
866 | switch (event) { | |
867 | case IRCOMM_TTY_GOT_LSAPSEL: | |
868 | /* Connect to remote device */ | |
869 | ret = ircomm_connect_request(self->ircomm, self->dlsap_sel, | |
6819bc2e | 870 | self->saddr, self->daddr, |
1da177e4 LT |
871 | NULL, self->service_type); |
872 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
873 | ircomm_tty_next_state(self, IRCOMM_TTY_SETUP); | |
874 | break; | |
875 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
876 | /* Go back to search mode */ | |
877 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
878 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
879 | break; | |
880 | case IRCOMM_TTY_CONNECT_INDICATION: | |
881 | del_timer(&self->watchdog_timer); | |
882 | ircomm_tty_ias_unregister(self); | |
883 | ||
884 | /* Accept connection */ | |
885 | ircomm_connect_response(self->ircomm, NULL); | |
886 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
887 | break; | |
888 | case IRCOMM_TTY_DETACH_CABLE: | |
889 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
890 | break; | |
891 | default: | |
0dc47877 | 892 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
893 | ircomm_tty_event[event]); |
894 | ret = -EINVAL; | |
895 | } | |
896 | return ret; | |
897 | } | |
898 | ||
899 | /* | |
900 | * Function ircomm_tty_state_setup (self, event, skb, info) | |
901 | * | |
902 | * Trying to connect | |
903 | * | |
904 | */ | |
6819bc2e YH |
905 | static int ircomm_tty_state_setup(struct ircomm_tty_cb *self, |
906 | IRCOMM_TTY_EVENT event, | |
907 | struct sk_buff *skb, | |
1da177e4 LT |
908 | struct ircomm_tty_info *info) |
909 | { | |
910 | int ret = 0; | |
911 | ||
0dc47877 | 912 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
913 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
914 | ||
915 | switch (event) { | |
916 | case IRCOMM_TTY_CONNECT_CONFIRM: | |
917 | del_timer(&self->watchdog_timer); | |
918 | ircomm_tty_ias_unregister(self); | |
6819bc2e YH |
919 | |
920 | /* | |
1da177e4 | 921 | * Send initial parameters. This will also send out queued |
6819bc2e | 922 | * parameters waiting for the connection to come up |
1da177e4 LT |
923 | */ |
924 | ircomm_tty_send_initial_parameters(self); | |
925 | ircomm_tty_link_established(self); | |
926 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
927 | break; | |
928 | case IRCOMM_TTY_CONNECT_INDICATION: | |
929 | del_timer(&self->watchdog_timer); | |
930 | ircomm_tty_ias_unregister(self); | |
6819bc2e | 931 | |
1da177e4 LT |
932 | /* Accept connection */ |
933 | ircomm_connect_response(self->ircomm, NULL); | |
934 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
935 | break; | |
936 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
937 | /* Go back to search mode */ | |
938 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
939 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
940 | break; | |
941 | case IRCOMM_TTY_DETACH_CABLE: | |
942 | /* ircomm_disconnect_request(self->ircomm, NULL); */ | |
943 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
944 | break; | |
945 | default: | |
0dc47877 | 946 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
947 | ircomm_tty_event[event]); |
948 | ret = -EINVAL; | |
949 | } | |
950 | return ret; | |
951 | } | |
952 | ||
953 | /* | |
954 | * Function ircomm_tty_state_ready (self, event, skb, info) | |
955 | * | |
956 | * IrCOMM is now connected | |
957 | * | |
958 | */ | |
6819bc2e YH |
959 | static int ircomm_tty_state_ready(struct ircomm_tty_cb *self, |
960 | IRCOMM_TTY_EVENT event, | |
961 | struct sk_buff *skb, | |
1da177e4 LT |
962 | struct ircomm_tty_info *info) |
963 | { | |
964 | int ret = 0; | |
965 | ||
966 | switch (event) { | |
967 | case IRCOMM_TTY_DATA_REQUEST: | |
968 | ret = ircomm_data_request(self->ircomm, skb); | |
6819bc2e | 969 | break; |
1da177e4 LT |
970 | case IRCOMM_TTY_DETACH_CABLE: |
971 | ircomm_disconnect_request(self->ircomm, NULL); | |
972 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
973 | break; | |
974 | case IRCOMM_TTY_DISCONNECT_INDICATION: | |
975 | ircomm_tty_ias_register(self); | |
976 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
977 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
978 | ||
979 | if (self->flags & ASYNC_CHECK_CD) { | |
980 | /* Drop carrier */ | |
981 | self->settings.dce = IRCOMM_DELTA_CD; | |
982 | ircomm_tty_check_modem_status(self); | |
983 | } else { | |
0dc47877 | 984 | IRDA_DEBUG(0, "%s(), hanging up!\n", __func__ ); |
1da177e4 LT |
985 | if (self->tty) |
986 | tty_hangup(self->tty); | |
987 | } | |
988 | break; | |
989 | default: | |
0dc47877 | 990 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
991 | ircomm_tty_event[event]); |
992 | ret = -EINVAL; | |
993 | } | |
994 | return ret; | |
995 | } | |
996 |