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 | 32 | #include <linux/init.h> |
d43c36dc | 33 | #include <linux/sched.h> |
1da177e4 LT |
34 | |
35 | #include <net/irda/irda.h> | |
36 | #include <net/irda/irlmp.h> | |
37 | #include <net/irda/iriap.h> | |
38 | #include <net/irda/irttp.h> | |
39 | #include <net/irda/irias_object.h> | |
40 | #include <net/irda/parameters.h> | |
41 | ||
42 | #include <net/irda/ircomm_core.h> | |
43 | #include <net/irda/ircomm_param.h> | |
44 | #include <net/irda/ircomm_event.h> | |
45 | ||
46 | #include <net/irda/ircomm_tty.h> | |
47 | #include <net/irda/ircomm_tty_attach.h> | |
48 | ||
49 | static void ircomm_tty_ias_register(struct ircomm_tty_cb *self); | |
50 | static void ircomm_tty_discovery_indication(discinfo_t *discovery, | |
51 | DISCOVERY_MODE mode, | |
52 | void *priv); | |
6819bc2e | 53 | static void ircomm_tty_getvalue_confirm(int result, __u16 obj_id, |
1da177e4 LT |
54 | struct ias_value *value, void *priv); |
55 | static void ircomm_tty_start_watchdog_timer(struct ircomm_tty_cb *self, | |
56 | int timeout); | |
57 | static void ircomm_tty_watchdog_timer_expired(void *data); | |
58 | ||
6819bc2e YH |
59 | static int ircomm_tty_state_idle(struct ircomm_tty_cb *self, |
60 | IRCOMM_TTY_EVENT event, | |
61 | struct sk_buff *skb, | |
1da177e4 | 62 | struct ircomm_tty_info *info); |
6819bc2e YH |
63 | static int ircomm_tty_state_search(struct ircomm_tty_cb *self, |
64 | IRCOMM_TTY_EVENT event, | |
65 | struct sk_buff *skb, | |
1da177e4 | 66 | struct ircomm_tty_info *info); |
6819bc2e YH |
67 | static int ircomm_tty_state_query_parameters(struct ircomm_tty_cb *self, |
68 | IRCOMM_TTY_EVENT event, | |
69 | struct sk_buff *skb, | |
1da177e4 | 70 | struct ircomm_tty_info *info); |
6819bc2e YH |
71 | static int ircomm_tty_state_query_lsap_sel(struct ircomm_tty_cb *self, |
72 | IRCOMM_TTY_EVENT event, | |
73 | struct sk_buff *skb, | |
1da177e4 | 74 | struct ircomm_tty_info *info); |
6819bc2e YH |
75 | static int ircomm_tty_state_setup(struct ircomm_tty_cb *self, |
76 | IRCOMM_TTY_EVENT event, | |
77 | struct sk_buff *skb, | |
1da177e4 | 78 | struct ircomm_tty_info *info); |
6819bc2e YH |
79 | static int ircomm_tty_state_ready(struct ircomm_tty_cb *self, |
80 | IRCOMM_TTY_EVENT event, | |
81 | struct sk_buff *skb, | |
1da177e4 LT |
82 | struct ircomm_tty_info *info); |
83 | ||
36cbd3dc | 84 | const char *const ircomm_tty_state[] = { |
1da177e4 LT |
85 | "IRCOMM_TTY_IDLE", |
86 | "IRCOMM_TTY_SEARCH", | |
87 | "IRCOMM_TTY_QUERY_PARAMETERS", | |
88 | "IRCOMM_TTY_QUERY_LSAP_SEL", | |
89 | "IRCOMM_TTY_SETUP", | |
90 | "IRCOMM_TTY_READY", | |
91 | "*** ERROR *** ", | |
92 | }; | |
93 | ||
94 | #ifdef CONFIG_IRDA_DEBUG | |
36cbd3dc | 95 | static const char *const ircomm_tty_event[] = { |
1da177e4 LT |
96 | "IRCOMM_TTY_ATTACH_CABLE", |
97 | "IRCOMM_TTY_DETACH_CABLE", | |
98 | "IRCOMM_TTY_DATA_REQUEST", | |
99 | "IRCOMM_TTY_DATA_INDICATION", | |
100 | "IRCOMM_TTY_DISCOVERY_REQUEST", | |
101 | "IRCOMM_TTY_DISCOVERY_INDICATION", | |
102 | "IRCOMM_TTY_CONNECT_CONFIRM", | |
103 | "IRCOMM_TTY_CONNECT_INDICATION", | |
104 | "IRCOMM_TTY_DISCONNECT_REQUEST", | |
105 | "IRCOMM_TTY_DISCONNECT_INDICATION", | |
106 | "IRCOMM_TTY_WD_TIMER_EXPIRED", | |
107 | "IRCOMM_TTY_GOT_PARAMETERS", | |
108 | "IRCOMM_TTY_GOT_LSAPSEL", | |
109 | "*** ERROR ****", | |
110 | }; | |
111 | #endif /* CONFIG_IRDA_DEBUG */ | |
112 | ||
113 | static int (*state[])(struct ircomm_tty_cb *self, IRCOMM_TTY_EVENT event, | |
6819bc2e | 114 | struct sk_buff *skb, struct ircomm_tty_info *info) = |
1da177e4 LT |
115 | { |
116 | ircomm_tty_state_idle, | |
117 | ircomm_tty_state_search, | |
118 | ircomm_tty_state_query_parameters, | |
119 | ircomm_tty_state_query_lsap_sel, | |
120 | ircomm_tty_state_setup, | |
121 | ircomm_tty_state_ready, | |
122 | }; | |
123 | ||
124 | /* | |
125 | * Function ircomm_tty_attach_cable (driver) | |
126 | * | |
127 | * Try to attach cable (IrCOMM link). This function will only return | |
6819bc2e | 128 | * when the link has been connected, or if an error condition occurs. |
1da177e4 LT |
129 | * If success, the return value is the resulting service type. |
130 | */ | |
131 | int ircomm_tty_attach_cable(struct ircomm_tty_cb *self) | |
132 | { | |
62f228ac JS |
133 | struct tty_struct *tty; |
134 | ||
0dc47877 | 135 | IRDA_DEBUG(0, "%s()\n", __func__ ); |
1da177e4 LT |
136 | |
137 | IRDA_ASSERT(self != NULL, return -1;); | |
138 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); | |
139 | ||
6819bc2e | 140 | /* Check if somebody has already connected to us */ |
1da177e4 | 141 | if (ircomm_is_connected(self->ircomm)) { |
0dc47877 | 142 | IRDA_DEBUG(0, "%s(), already connected!\n", __func__ ); |
1da177e4 LT |
143 | return 0; |
144 | } | |
145 | ||
146 | /* Make sure nobody tries to write before the link is up */ | |
62f228ac JS |
147 | tty = tty_port_tty_get(&self->port); |
148 | if (tty) { | |
149 | tty->hw_stopped = 1; | |
150 | tty_kref_put(tty); | |
151 | } | |
1da177e4 LT |
152 | |
153 | ircomm_tty_ias_register(self); | |
154 | ||
155 | ircomm_tty_do_event(self, IRCOMM_TTY_ATTACH_CABLE, NULL, NULL); | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
160 | /* | |
161 | * Function ircomm_detach_cable (driver) | |
162 | * | |
163 | * Detach cable, or cable has been detached by peer | |
164 | * | |
165 | */ | |
166 | void ircomm_tty_detach_cable(struct ircomm_tty_cb *self) | |
167 | { | |
0dc47877 | 168 | IRDA_DEBUG(0, "%s()\n", __func__ ); |
1da177e4 LT |
169 | |
170 | IRDA_ASSERT(self != NULL, return;); | |
171 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
172 | ||
173 | del_timer(&self->watchdog_timer); | |
174 | ||
175 | /* Remove discovery handler */ | |
176 | if (self->ckey) { | |
177 | irlmp_unregister_client(self->ckey); | |
178 | self->ckey = NULL; | |
179 | } | |
180 | /* Remove IrCOMM hint bits */ | |
181 | if (self->skey) { | |
182 | irlmp_unregister_service(self->skey); | |
183 | self->skey = NULL; | |
184 | } | |
185 | ||
6819bc2e | 186 | if (self->iriap) { |
1da177e4 LT |
187 | iriap_close(self->iriap); |
188 | self->iriap = NULL; | |
189 | } | |
190 | ||
191 | /* Remove LM-IAS object */ | |
192 | if (self->obj) { | |
193 | irias_delete_object(self->obj); | |
194 | self->obj = NULL; | |
195 | } | |
196 | ||
197 | ircomm_tty_do_event(self, IRCOMM_TTY_DETACH_CABLE, NULL, NULL); | |
198 | ||
199 | /* Reset some values */ | |
200 | self->daddr = self->saddr = 0; | |
201 | self->dlsap_sel = self->slsap_sel = 0; | |
202 | ||
203 | memset(&self->settings, 0, sizeof(struct ircomm_params)); | |
204 | } | |
205 | ||
206 | /* | |
207 | * Function ircomm_tty_ias_register (self) | |
208 | * | |
209 | * Register with LM-IAS depending on which service type we are | |
210 | * | |
211 | */ | |
212 | static void ircomm_tty_ias_register(struct ircomm_tty_cb *self) | |
213 | { | |
214 | __u8 oct_seq[6]; | |
215 | __u16 hints; | |
216 | ||
0dc47877 | 217 | IRDA_DEBUG(0, "%s()\n", __func__ ); |
1da177e4 LT |
218 | |
219 | IRDA_ASSERT(self != NULL, return;); | |
220 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
6819bc2e | 221 | |
1da177e4 LT |
222 | /* Compute hint bits based on service */ |
223 | hints = irlmp_service_to_hint(S_COMM); | |
224 | if (self->service_type & IRCOMM_3_WIRE_RAW) | |
225 | hints |= irlmp_service_to_hint(S_PRINTER); | |
226 | ||
227 | /* Advertise IrCOMM hint bit in discovery */ | |
228 | if (!self->skey) | |
229 | self->skey = irlmp_register_service(hints); | |
230 | /* Set up a discovery handler */ | |
231 | if (!self->ckey) | |
232 | self->ckey = irlmp_register_client(hints, | |
233 | ircomm_tty_discovery_indication, | |
234 | NULL, (void *) self); | |
235 | ||
236 | /* If already done, no need to do it again */ | |
237 | if (self->obj) | |
238 | return; | |
239 | ||
240 | if (self->service_type & IRCOMM_3_WIRE_RAW) { | |
241 | /* Register IrLPT with LM-IAS */ | |
242 | self->obj = irias_new_object("IrLPT", IAS_IRLPT_ID); | |
6819bc2e | 243 | irias_add_integer_attrib(self->obj, "IrDA:IrLMP:LsapSel", |
1da177e4 LT |
244 | self->slsap_sel, IAS_KERNEL_ATTR); |
245 | } else { | |
246 | /* Register IrCOMM with LM-IAS */ | |
247 | self->obj = irias_new_object("IrDA:IrCOMM", IAS_IRCOMM_ID); | |
6819bc2e | 248 | irias_add_integer_attrib(self->obj, "IrDA:TinyTP:LsapSel", |
1da177e4 | 249 | self->slsap_sel, IAS_KERNEL_ATTR); |
6819bc2e | 250 | |
1da177e4 | 251 | /* Code the parameters into the buffer */ |
6819bc2e | 252 | irda_param_pack(oct_seq, "bbbbbb", |
1da177e4 LT |
253 | IRCOMM_SERVICE_TYPE, 1, self->service_type, |
254 | IRCOMM_PORT_TYPE, 1, IRCOMM_SERIAL); | |
6819bc2e | 255 | |
1da177e4 LT |
256 | /* Register parameters with LM-IAS */ |
257 | irias_add_octseq_attrib(self->obj, "Parameters", oct_seq, 6, | |
258 | IAS_KERNEL_ATTR); | |
259 | } | |
260 | irias_insert_object(self->obj); | |
261 | } | |
262 | ||
263 | /* | |
264 | * Function ircomm_tty_ias_unregister (self) | |
265 | * | |
266 | * Remove our IAS object and client hook while connected. | |
267 | * | |
268 | */ | |
269 | static void ircomm_tty_ias_unregister(struct ircomm_tty_cb *self) | |
270 | { | |
271 | /* Remove LM-IAS object now so it is not reused. | |
272 | * IrCOMM deals very poorly with multiple incoming connections. | |
273 | * It should looks a lot more like IrNET, and "dup" a server TSAP | |
274 | * to the application TSAP (based on various rules). | |
275 | * This is a cheap workaround allowing multiple clients to | |
276 | * connect to us. It will not always work. | |
277 | * Each IrCOMM socket has an IAS entry. Incoming connection will | |
278 | * pick the first one found. So, when we are fully connected, | |
279 | * we remove our IAS entries so that the next IAS entry is used. | |
280 | * We do that for *both* client and server, because a server | |
281 | * can also create client instances. | |
282 | * Jean II */ | |
283 | if (self->obj) { | |
284 | irias_delete_object(self->obj); | |
285 | self->obj = NULL; | |
286 | } | |
287 | ||
288 | #if 0 | |
289 | /* Remove discovery handler. | |
290 | * While we are connected, we no longer need to receive | |
291 | * discovery events. This would be the case if there is | |
292 | * multiple IrLAP interfaces. Jean II */ | |
293 | if (self->ckey) { | |
294 | irlmp_unregister_client(self->ckey); | |
295 | self->ckey = NULL; | |
296 | } | |
297 | #endif | |
298 | } | |
299 | ||
300 | /* | |
301 | * Function ircomm_send_initial_parameters (self) | |
302 | * | |
303 | * Send initial parameters to the remote IrCOMM device. These parameters | |
304 | * must be sent before any data. | |
305 | */ | |
306 | int ircomm_tty_send_initial_parameters(struct ircomm_tty_cb *self) | |
307 | { | |
308 | IRDA_ASSERT(self != NULL, return -1;); | |
309 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); | |
310 | ||
6819bc2e | 311 | if (self->service_type & IRCOMM_3_WIRE_RAW) |
1da177e4 LT |
312 | return 0; |
313 | ||
6819bc2e YH |
314 | /* |
315 | * Set default values, but only if the application for some reason | |
1da177e4 LT |
316 | * haven't set them already |
317 | */ | |
0dc47877 | 318 | IRDA_DEBUG(2, "%s(), data-rate = %d\n", __func__ , |
1da177e4 LT |
319 | self->settings.data_rate); |
320 | if (!self->settings.data_rate) | |
321 | self->settings.data_rate = 9600; | |
0dc47877 | 322 | IRDA_DEBUG(2, "%s(), data-format = %d\n", __func__ , |
1da177e4 LT |
323 | self->settings.data_format); |
324 | if (!self->settings.data_format) | |
325 | self->settings.data_format = IRCOMM_WSIZE_8; /* 8N1 */ | |
326 | ||
0dc47877 | 327 | IRDA_DEBUG(2, "%s(), flow-control = %d\n", __func__ , |
1da177e4 LT |
328 | self->settings.flow_control); |
329 | /*self->settings.flow_control = IRCOMM_RTS_CTS_IN|IRCOMM_RTS_CTS_OUT;*/ | |
330 | ||
331 | /* Do not set delta values for the initial parameters */ | |
332 | self->settings.dte = IRCOMM_DTR | IRCOMM_RTS; | |
333 | ||
334 | /* Only send service type parameter when we are the client */ | |
335 | if (self->client) | |
336 | ircomm_param_request(self, IRCOMM_SERVICE_TYPE, FALSE); | |
337 | ircomm_param_request(self, IRCOMM_DATA_RATE, FALSE); | |
338 | ircomm_param_request(self, IRCOMM_DATA_FORMAT, FALSE); | |
6819bc2e | 339 | |
1da177e4 LT |
340 | /* For a 3 wire service, we just flush the last parameter and return */ |
341 | if (self->settings.service_type == IRCOMM_3_WIRE) { | |
342 | ircomm_param_request(self, IRCOMM_FLOW_CONTROL, TRUE); | |
343 | return 0; | |
344 | } | |
345 | ||
346 | /* Only 9-wire service types continue here */ | |
347 | ircomm_param_request(self, IRCOMM_FLOW_CONTROL, FALSE); | |
348 | #if 0 | |
349 | ircomm_param_request(self, IRCOMM_XON_XOFF, FALSE); | |
350 | ircomm_param_request(self, IRCOMM_ENQ_ACK, FALSE); | |
6819bc2e | 351 | #endif |
1da177e4 LT |
352 | /* Notify peer that we are ready to receive data */ |
353 | ircomm_param_request(self, IRCOMM_DTE, TRUE); | |
6819bc2e | 354 | |
1da177e4 LT |
355 | return 0; |
356 | } | |
357 | ||
358 | /* | |
359 | * Function ircomm_tty_discovery_indication (discovery) | |
360 | * | |
361 | * Remote device is discovered, try query the remote IAS to see which | |
362 | * device it is, and which services it has. | |
363 | * | |
364 | */ | |
365 | static void ircomm_tty_discovery_indication(discinfo_t *discovery, | |
366 | DISCOVERY_MODE mode, | |
367 | void *priv) | |
368 | { | |
369 | struct ircomm_tty_cb *self; | |
370 | struct ircomm_tty_info info; | |
371 | ||
0dc47877 | 372 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
373 | |
374 | /* Important note : | |
375 | * We need to drop all passive discoveries. | |
376 | * The LSAP management of IrComm is deficient and doesn't deal | |
377 | * with the case of two instance connecting to each other | |
378 | * simultaneously (it will deadlock in LMP). | |
379 | * The proper fix would be to use the same technique as in IrNET, | |
380 | * to have one server socket and separate instances for the | |
381 | * connecting/connected socket. | |
382 | * The workaround is to drop passive discovery, which drastically | |
383 | * reduce the probability of this happening. | |
384 | * Jean II */ | |
385 | if(mode == DISCOVERY_PASSIVE) | |
386 | return; | |
387 | ||
388 | info.daddr = discovery->daddr; | |
389 | info.saddr = discovery->saddr; | |
390 | ||
ea110733 | 391 | self = priv; |
c310f099 RR |
392 | ircomm_tty_do_event(self, IRCOMM_TTY_DISCOVERY_INDICATION, |
393 | NULL, &info); | |
1da177e4 LT |
394 | } |
395 | ||
396 | /* | |
397 | * Function ircomm_tty_disconnect_indication (instance, sap, reason, skb) | |
398 | * | |
399 | * Link disconnected | |
400 | * | |
401 | */ | |
6819bc2e | 402 | void ircomm_tty_disconnect_indication(void *instance, void *sap, |
1da177e4 LT |
403 | LM_REASON reason, |
404 | struct sk_buff *skb) | |
405 | { | |
406 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; | |
62f228ac | 407 | struct tty_struct *tty; |
1da177e4 | 408 | |
0dc47877 | 409 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
410 | |
411 | IRDA_ASSERT(self != NULL, return;); | |
412 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
413 | ||
62f228ac JS |
414 | tty = tty_port_tty_get(&self->port); |
415 | if (!tty) | |
1da177e4 LT |
416 | return; |
417 | ||
418 | /* This will stop control data transfers */ | |
419 | self->flow = FLOW_STOP; | |
420 | ||
421 | /* Stop data transfers */ | |
62f228ac | 422 | tty->hw_stopped = 1; |
1da177e4 | 423 | |
6819bc2e | 424 | ircomm_tty_do_event(self, IRCOMM_TTY_DISCONNECT_INDICATION, NULL, |
1da177e4 | 425 | NULL); |
62f228ac | 426 | tty_kref_put(tty); |
1da177e4 LT |
427 | } |
428 | ||
429 | /* | |
430 | * Function ircomm_tty_getvalue_confirm (result, obj_id, value, priv) | |
431 | * | |
432 | * Got result from the IAS query we make | |
433 | * | |
434 | */ | |
6819bc2e YH |
435 | static void ircomm_tty_getvalue_confirm(int result, __u16 obj_id, |
436 | struct ias_value *value, | |
1da177e4 LT |
437 | void *priv) |
438 | { | |
439 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) priv; | |
440 | ||
0dc47877 | 441 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
442 | |
443 | IRDA_ASSERT(self != NULL, return;); | |
444 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
445 | ||
446 | /* We probably don't need to make any more queries */ | |
447 | iriap_close(self->iriap); | |
448 | self->iriap = NULL; | |
449 | ||
450 | /* Check if request succeeded */ | |
451 | if (result != IAS_SUCCESS) { | |
0dc47877 | 452 | IRDA_DEBUG(4, "%s(), got NULL value!\n", __func__ ); |
1da177e4 LT |
453 | return; |
454 | } | |
455 | ||
456 | switch (value->type) { | |
6819bc2e | 457 | case IAS_OCT_SEQ: |
0dc47877 | 458 | IRDA_DEBUG(2, "%s(), got octet sequence\n", __func__ ); |
1da177e4 LT |
459 | |
460 | irda_param_extract_all(self, value->t.oct_seq, value->len, | |
461 | &ircomm_param_info); | |
462 | ||
6819bc2e | 463 | ircomm_tty_do_event(self, IRCOMM_TTY_GOT_PARAMETERS, NULL, |
1da177e4 LT |
464 | NULL); |
465 | break; | |
466 | case IAS_INTEGER: | |
6819bc2e | 467 | /* Got LSAP selector */ |
0dc47877 | 468 | IRDA_DEBUG(2, "%s(), got lsapsel = %d\n", __func__ , |
1da177e4 LT |
469 | value->t.integer); |
470 | ||
471 | if (value->t.integer == -1) { | |
0dc47877 | 472 | IRDA_DEBUG(0, "%s(), invalid value!\n", __func__ ); |
1da177e4 LT |
473 | } else |
474 | self->dlsap_sel = value->t.integer; | |
475 | ||
476 | ircomm_tty_do_event(self, IRCOMM_TTY_GOT_LSAPSEL, NULL, NULL); | |
477 | break; | |
478 | case IAS_MISSING: | |
0dc47877 | 479 | IRDA_DEBUG(0, "%s(), got IAS_MISSING\n", __func__ ); |
1da177e4 LT |
480 | break; |
481 | default: | |
0dc47877 | 482 | IRDA_DEBUG(0, "%s(), got unknown type!\n", __func__ ); |
1da177e4 LT |
483 | break; |
484 | } | |
485 | irias_delete_value(value); | |
486 | } | |
487 | ||
488 | /* | |
489 | * Function ircomm_tty_connect_confirm (instance, sap, qos, max_sdu_size, skb) | |
490 | * | |
491 | * Connection confirmed | |
492 | * | |
493 | */ | |
6819bc2e YH |
494 | void ircomm_tty_connect_confirm(void *instance, void *sap, |
495 | struct qos_info *qos, | |
496 | __u32 max_data_size, | |
497 | __u8 max_header_size, | |
1da177e4 LT |
498 | struct sk_buff *skb) |
499 | { | |
500 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; | |
501 | ||
0dc47877 | 502 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
503 | |
504 | IRDA_ASSERT(self != NULL, return;); | |
505 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
506 | ||
507 | self->client = TRUE; | |
508 | self->max_data_size = max_data_size; | |
509 | self->max_header_size = max_header_size; | |
510 | self->flow = FLOW_START; | |
511 | ||
512 | ircomm_tty_do_event(self, IRCOMM_TTY_CONNECT_CONFIRM, NULL, NULL); | |
513 | ||
514 | /* No need to kfree_skb - see ircomm_ttp_connect_confirm() */ | |
515 | } | |
516 | ||
517 | /* | |
6819bc2e | 518 | * Function ircomm_tty_connect_indication (instance, sap, qos, max_sdu_size, |
1da177e4 LT |
519 | * skb) |
520 | * | |
521 | * we are discovered and being requested to connect by remote device ! | |
522 | * | |
523 | */ | |
6819bc2e YH |
524 | void ircomm_tty_connect_indication(void *instance, void *sap, |
525 | struct qos_info *qos, | |
1da177e4 | 526 | __u32 max_data_size, |
6819bc2e | 527 | __u8 max_header_size, |
1da177e4 LT |
528 | struct sk_buff *skb) |
529 | { | |
530 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; | |
531 | int clen; | |
532 | ||
0dc47877 | 533 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
534 | |
535 | IRDA_ASSERT(self != NULL, return;); | |
536 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
537 | ||
538 | self->client = FALSE; | |
539 | self->max_data_size = max_data_size; | |
540 | self->max_header_size = max_header_size; | |
541 | self->flow = FLOW_START; | |
542 | ||
543 | clen = skb->data[0]; | |
544 | if (clen) | |
6819bc2e YH |
545 | irda_param_extract_all(self, skb->data+1, |
546 | IRDA_MIN(skb->len, clen), | |
1da177e4 LT |
547 | &ircomm_param_info); |
548 | ||
549 | ircomm_tty_do_event(self, IRCOMM_TTY_CONNECT_INDICATION, NULL, NULL); | |
550 | ||
551 | /* No need to kfree_skb - see ircomm_ttp_connect_indication() */ | |
552 | } | |
553 | ||
554 | /* | |
555 | * Function ircomm_tty_link_established (self) | |
556 | * | |
557 | * Called when the IrCOMM link is established | |
558 | * | |
559 | */ | |
560 | void ircomm_tty_link_established(struct ircomm_tty_cb *self) | |
561 | { | |
62f228ac JS |
562 | struct tty_struct *tty; |
563 | ||
0dc47877 | 564 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
565 | |
566 | IRDA_ASSERT(self != NULL, return;); | |
567 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
568 | ||
62f228ac JS |
569 | tty = tty_port_tty_get(&self->port); |
570 | if (!tty) | |
1da177e4 | 571 | return; |
6819bc2e | 572 | |
1da177e4 LT |
573 | del_timer(&self->watchdog_timer); |
574 | ||
6819bc2e | 575 | /* |
1da177e4 LT |
576 | * IrCOMM link is now up, and if we are not using hardware |
577 | * flow-control, then declare the hardware as running. Otherwise we | |
578 | * will have to wait for the peer device (DCE) to raise the CTS | |
6819bc2e | 579 | * line. |
1da177e4 | 580 | */ |
f21ec3d2 | 581 | if (tty_port_cts_enabled(&self->port) && |
849d5a99 | 582 | ((self->settings.dce & IRCOMM_CTS) == 0)) { |
0dc47877 | 583 | IRDA_DEBUG(0, "%s(), waiting for CTS ...\n", __func__ ); |
62f228ac | 584 | goto put; |
1da177e4 | 585 | } else { |
0dc47877 | 586 | IRDA_DEBUG(1, "%s(), starting hardware!\n", __func__ ); |
1da177e4 | 587 | |
62f228ac | 588 | tty->hw_stopped = 0; |
6819bc2e | 589 | |
1da177e4 | 590 | /* Wake up processes blocked on open */ |
a3cc9fcf | 591 | wake_up_interruptible(&self->port.open_wait); |
1da177e4 LT |
592 | } |
593 | ||
594 | schedule_work(&self->tqueue); | |
62f228ac JS |
595 | put: |
596 | tty_kref_put(tty); | |
1da177e4 LT |
597 | } |
598 | ||
599 | /* | |
600 | * Function ircomm_tty_start_watchdog_timer (self, timeout) | |
601 | * | |
6819bc2e YH |
602 | * Start the watchdog timer. This timer is used to make sure that any |
603 | * connection attempt is successful, and if not, we will retry after | |
1da177e4 LT |
604 | * the timeout |
605 | */ | |
606 | static void ircomm_tty_start_watchdog_timer(struct ircomm_tty_cb *self, | |
607 | int timeout) | |
608 | { | |
609 | IRDA_ASSERT(self != NULL, return;); | |
610 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
611 | ||
612 | irda_start_timer(&self->watchdog_timer, timeout, (void *) self, | |
613 | ircomm_tty_watchdog_timer_expired); | |
614 | } | |
615 | ||
616 | /* | |
617 | * Function ircomm_tty_watchdog_timer_expired (data) | |
618 | * | |
619 | * Called when the connect procedure have taken to much time. | |
620 | * | |
621 | */ | |
622 | static void ircomm_tty_watchdog_timer_expired(void *data) | |
623 | { | |
624 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) data; | |
6819bc2e | 625 | |
0dc47877 | 626 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
1da177e4 LT |
627 | |
628 | IRDA_ASSERT(self != NULL, return;); | |
629 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
630 | ||
631 | ircomm_tty_do_event(self, IRCOMM_TTY_WD_TIMER_EXPIRED, NULL, NULL); | |
632 | } | |
633 | ||
634 | ||
635 | /* | |
636 | * Function ircomm_tty_do_event (self, event, skb) | |
637 | * | |
638 | * Process event | |
639 | * | |
640 | */ | |
641 | int ircomm_tty_do_event(struct ircomm_tty_cb *self, IRCOMM_TTY_EVENT event, | |
6819bc2e | 642 | struct sk_buff *skb, struct ircomm_tty_info *info) |
1da177e4 LT |
643 | { |
644 | IRDA_ASSERT(self != NULL, return -1;); | |
645 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); | |
646 | ||
0dc47877 | 647 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 | 648 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
6819bc2e | 649 | |
1da177e4 LT |
650 | return (*state[self->state])(self, event, skb, info); |
651 | } | |
652 | ||
653 | /* | |
654 | * Function ircomm_tty_next_state (self, state) | |
655 | * | |
656 | * Switch state | |
657 | * | |
658 | */ | |
659 | static inline void ircomm_tty_next_state(struct ircomm_tty_cb *self, IRCOMM_TTY_STATE state) | |
660 | { | |
661 | /* | |
662 | IRDA_ASSERT(self != NULL, return;); | |
663 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); | |
664 | ||
0dc47877 | 665 | IRDA_DEBUG(2, "%s: next state=%s, service type=%d\n", __func__ , |
1da177e4 LT |
666 | ircomm_tty_state[self->state], self->service_type); |
667 | */ | |
668 | self->state = state; | |
669 | } | |
670 | ||
671 | /* | |
672 | * Function ircomm_tty_state_idle (self, event, skb, info) | |
673 | * | |
674 | * Just hanging around | |
675 | * | |
676 | */ | |
6819bc2e YH |
677 | static int ircomm_tty_state_idle(struct ircomm_tty_cb *self, |
678 | IRCOMM_TTY_EVENT event, | |
679 | struct sk_buff *skb, | |
1da177e4 LT |
680 | struct ircomm_tty_info *info) |
681 | { | |
682 | int ret = 0; | |
683 | ||
0dc47877 | 684 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
685 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
686 | switch (event) { | |
687 | case IRCOMM_TTY_ATTACH_CABLE: | |
6819bc2e | 688 | /* Try to discover any remote devices */ |
1da177e4 LT |
689 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
690 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
6819bc2e | 691 | |
1da177e4 LT |
692 | irlmp_discovery_request(DISCOVERY_DEFAULT_SLOTS); |
693 | break; | |
694 | case IRCOMM_TTY_DISCOVERY_INDICATION: | |
695 | self->daddr = info->daddr; | |
696 | self->saddr = info->saddr; | |
697 | ||
698 | if (self->iriap) { | |
699 | IRDA_WARNING("%s(), busy with a previous query\n", | |
0dc47877 | 700 | __func__); |
1da177e4 LT |
701 | return -EBUSY; |
702 | } | |
703 | ||
704 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, | |
705 | ircomm_tty_getvalue_confirm); | |
706 | ||
707 | iriap_getvaluebyclass_request(self->iriap, | |
708 | self->saddr, self->daddr, | |
709 | "IrDA:IrCOMM", "Parameters"); | |
6819bc2e | 710 | |
1da177e4 LT |
711 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
712 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_PARAMETERS); | |
713 | break; | |
714 | case IRCOMM_TTY_CONNECT_INDICATION: | |
715 | del_timer(&self->watchdog_timer); | |
716 | ||
717 | /* Accept connection */ | |
718 | ircomm_connect_response(self->ircomm, NULL); | |
719 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
720 | break; | |
721 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
722 | /* Just stay idle */ | |
723 | break; | |
724 | case IRCOMM_TTY_DETACH_CABLE: | |
725 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
726 | break; | |
727 | default: | |
0dc47877 | 728 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
729 | ircomm_tty_event[event]); |
730 | ret = -EINVAL; | |
731 | } | |
732 | return ret; | |
733 | } | |
734 | ||
735 | /* | |
736 | * Function ircomm_tty_state_search (self, event, skb, info) | |
737 | * | |
738 | * Trying to discover an IrCOMM device | |
739 | * | |
740 | */ | |
6819bc2e YH |
741 | static int ircomm_tty_state_search(struct ircomm_tty_cb *self, |
742 | IRCOMM_TTY_EVENT event, | |
743 | struct sk_buff *skb, | |
1da177e4 LT |
744 | struct ircomm_tty_info *info) |
745 | { | |
746 | int ret = 0; | |
747 | ||
0dc47877 | 748 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
749 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
750 | ||
751 | switch (event) { | |
752 | case IRCOMM_TTY_DISCOVERY_INDICATION: | |
753 | self->daddr = info->daddr; | |
754 | self->saddr = info->saddr; | |
755 | ||
756 | if (self->iriap) { | |
757 | IRDA_WARNING("%s(), busy with a previous query\n", | |
0dc47877 | 758 | __func__); |
1da177e4 LT |
759 | return -EBUSY; |
760 | } | |
6819bc2e | 761 | |
1da177e4 LT |
762 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
763 | ircomm_tty_getvalue_confirm); | |
6819bc2e | 764 | |
1da177e4 LT |
765 | if (self->service_type == IRCOMM_3_WIRE_RAW) { |
766 | iriap_getvaluebyclass_request(self->iriap, self->saddr, | |
6819bc2e | 767 | self->daddr, "IrLPT", |
1da177e4 LT |
768 | "IrDA:IrLMP:LsapSel"); |
769 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_LSAP_SEL); | |
770 | } else { | |
771 | iriap_getvaluebyclass_request(self->iriap, self->saddr, | |
6819bc2e YH |
772 | self->daddr, |
773 | "IrDA:IrCOMM", | |
1da177e4 LT |
774 | "Parameters"); |
775 | ||
776 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_PARAMETERS); | |
777 | } | |
778 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
779 | break; | |
780 | case IRCOMM_TTY_CONNECT_INDICATION: | |
781 | del_timer(&self->watchdog_timer); | |
782 | ircomm_tty_ias_unregister(self); | |
783 | ||
784 | /* Accept connection */ | |
785 | ircomm_connect_response(self->ircomm, NULL); | |
786 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
787 | break; | |
788 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
789 | #if 1 | |
790 | /* Give up */ | |
791 | #else | |
6819bc2e | 792 | /* Try to discover any remote devices */ |
1da177e4 LT |
793 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
794 | irlmp_discovery_request(DISCOVERY_DEFAULT_SLOTS); | |
795 | #endif | |
796 | break; | |
797 | case IRCOMM_TTY_DETACH_CABLE: | |
798 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
799 | break; | |
800 | default: | |
0dc47877 | 801 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
802 | ircomm_tty_event[event]); |
803 | ret = -EINVAL; | |
804 | } | |
805 | return ret; | |
806 | } | |
807 | ||
808 | /* | |
809 | * Function ircomm_tty_state_query (self, event, skb, info) | |
810 | * | |
811 | * Querying the remote LM-IAS for IrCOMM parameters | |
812 | * | |
813 | */ | |
6819bc2e YH |
814 | static int ircomm_tty_state_query_parameters(struct ircomm_tty_cb *self, |
815 | IRCOMM_TTY_EVENT event, | |
816 | struct sk_buff *skb, | |
1da177e4 LT |
817 | struct ircomm_tty_info *info) |
818 | { | |
819 | int ret = 0; | |
820 | ||
0dc47877 | 821 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
822 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
823 | ||
824 | switch (event) { | |
825 | case IRCOMM_TTY_GOT_PARAMETERS: | |
826 | if (self->iriap) { | |
827 | IRDA_WARNING("%s(), busy with a previous query\n", | |
0dc47877 | 828 | __func__); |
1da177e4 LT |
829 | return -EBUSY; |
830 | } | |
6819bc2e | 831 | |
1da177e4 LT |
832 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
833 | ircomm_tty_getvalue_confirm); | |
834 | ||
6819bc2e YH |
835 | iriap_getvaluebyclass_request(self->iriap, self->saddr, |
836 | self->daddr, "IrDA:IrCOMM", | |
1da177e4 LT |
837 | "IrDA:TinyTP:LsapSel"); |
838 | ||
839 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
840 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_LSAP_SEL); | |
841 | break; | |
842 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
843 | /* Go back to search mode */ | |
844 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
6819bc2e | 845 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
1da177e4 LT |
846 | break; |
847 | case IRCOMM_TTY_CONNECT_INDICATION: | |
848 | del_timer(&self->watchdog_timer); | |
849 | ircomm_tty_ias_unregister(self); | |
850 | ||
851 | /* Accept connection */ | |
852 | ircomm_connect_response(self->ircomm, NULL); | |
853 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
854 | break; | |
855 | case IRCOMM_TTY_DETACH_CABLE: | |
856 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
857 | break; | |
858 | default: | |
0dc47877 | 859 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
860 | ircomm_tty_event[event]); |
861 | ret = -EINVAL; | |
862 | } | |
863 | return ret; | |
864 | } | |
865 | ||
866 | /* | |
867 | * Function ircomm_tty_state_query_lsap_sel (self, event, skb, info) | |
868 | * | |
869 | * Query remote LM-IAS for the LSAP selector which we can connect to | |
870 | * | |
871 | */ | |
6819bc2e YH |
872 | static int ircomm_tty_state_query_lsap_sel(struct ircomm_tty_cb *self, |
873 | IRCOMM_TTY_EVENT event, | |
874 | struct sk_buff *skb, | |
1da177e4 LT |
875 | struct ircomm_tty_info *info) |
876 | { | |
877 | int ret = 0; | |
878 | ||
0dc47877 | 879 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
880 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
881 | ||
882 | switch (event) { | |
883 | case IRCOMM_TTY_GOT_LSAPSEL: | |
884 | /* Connect to remote device */ | |
885 | ret = ircomm_connect_request(self->ircomm, self->dlsap_sel, | |
6819bc2e | 886 | self->saddr, self->daddr, |
1da177e4 LT |
887 | NULL, self->service_type); |
888 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
889 | ircomm_tty_next_state(self, IRCOMM_TTY_SETUP); | |
890 | break; | |
891 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
892 | /* Go back to search mode */ | |
893 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
894 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
895 | break; | |
896 | case IRCOMM_TTY_CONNECT_INDICATION: | |
897 | del_timer(&self->watchdog_timer); | |
898 | ircomm_tty_ias_unregister(self); | |
899 | ||
900 | /* Accept connection */ | |
901 | ircomm_connect_response(self->ircomm, NULL); | |
902 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
903 | break; | |
904 | case IRCOMM_TTY_DETACH_CABLE: | |
905 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
906 | break; | |
907 | default: | |
0dc47877 | 908 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
909 | ircomm_tty_event[event]); |
910 | ret = -EINVAL; | |
911 | } | |
912 | return ret; | |
913 | } | |
914 | ||
915 | /* | |
916 | * Function ircomm_tty_state_setup (self, event, skb, info) | |
917 | * | |
918 | * Trying to connect | |
919 | * | |
920 | */ | |
6819bc2e YH |
921 | static int ircomm_tty_state_setup(struct ircomm_tty_cb *self, |
922 | IRCOMM_TTY_EVENT event, | |
923 | struct sk_buff *skb, | |
1da177e4 LT |
924 | struct ircomm_tty_info *info) |
925 | { | |
926 | int ret = 0; | |
927 | ||
0dc47877 | 928 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
1da177e4 LT |
929 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
930 | ||
931 | switch (event) { | |
932 | case IRCOMM_TTY_CONNECT_CONFIRM: | |
933 | del_timer(&self->watchdog_timer); | |
934 | ircomm_tty_ias_unregister(self); | |
6819bc2e YH |
935 | |
936 | /* | |
1da177e4 | 937 | * Send initial parameters. This will also send out queued |
6819bc2e | 938 | * parameters waiting for the connection to come up |
1da177e4 LT |
939 | */ |
940 | ircomm_tty_send_initial_parameters(self); | |
941 | ircomm_tty_link_established(self); | |
942 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
943 | break; | |
944 | case IRCOMM_TTY_CONNECT_INDICATION: | |
945 | del_timer(&self->watchdog_timer); | |
946 | ircomm_tty_ias_unregister(self); | |
6819bc2e | 947 | |
1da177e4 LT |
948 | /* Accept connection */ |
949 | ircomm_connect_response(self->ircomm, NULL); | |
950 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); | |
951 | break; | |
952 | case IRCOMM_TTY_WD_TIMER_EXPIRED: | |
953 | /* Go back to search mode */ | |
954 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
955 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
956 | break; | |
957 | case IRCOMM_TTY_DETACH_CABLE: | |
958 | /* ircomm_disconnect_request(self->ircomm, NULL); */ | |
959 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
960 | break; | |
961 | default: | |
0dc47877 | 962 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
963 | ircomm_tty_event[event]); |
964 | ret = -EINVAL; | |
965 | } | |
966 | return ret; | |
967 | } | |
968 | ||
969 | /* | |
970 | * Function ircomm_tty_state_ready (self, event, skb, info) | |
971 | * | |
972 | * IrCOMM is now connected | |
973 | * | |
974 | */ | |
6819bc2e YH |
975 | static int ircomm_tty_state_ready(struct ircomm_tty_cb *self, |
976 | IRCOMM_TTY_EVENT event, | |
977 | struct sk_buff *skb, | |
1da177e4 LT |
978 | struct ircomm_tty_info *info) |
979 | { | |
980 | int ret = 0; | |
981 | ||
982 | switch (event) { | |
983 | case IRCOMM_TTY_DATA_REQUEST: | |
984 | ret = ircomm_data_request(self->ircomm, skb); | |
6819bc2e | 985 | break; |
1da177e4 LT |
986 | case IRCOMM_TTY_DETACH_CABLE: |
987 | ircomm_disconnect_request(self->ircomm, NULL); | |
988 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); | |
989 | break; | |
990 | case IRCOMM_TTY_DISCONNECT_INDICATION: | |
991 | ircomm_tty_ias_register(self); | |
992 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); | |
993 | ircomm_tty_start_watchdog_timer(self, 3*HZ); | |
994 | ||
849d5a99 | 995 | if (self->port.flags & ASYNC_CHECK_CD) { |
1da177e4 LT |
996 | /* Drop carrier */ |
997 | self->settings.dce = IRCOMM_DELTA_CD; | |
998 | ircomm_tty_check_modem_status(self); | |
999 | } else { | |
62f228ac | 1000 | struct tty_struct *tty = tty_port_tty_get(&self->port); |
0dc47877 | 1001 | IRDA_DEBUG(0, "%s(), hanging up!\n", __func__ ); |
62f228ac JS |
1002 | if (tty) { |
1003 | tty_hangup(tty); | |
1004 | tty_kref_put(tty); | |
1005 | } | |
1da177e4 LT |
1006 | } |
1007 | break; | |
1008 | default: | |
0dc47877 | 1009 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
1da177e4 LT |
1010 | ircomm_tty_event[event]); |
1011 | ret = -EINVAL; | |
1012 | } | |
1013 | return ret; | |
1014 | } | |
1015 |