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FRV: Use generic show_interrupts()
[cris-mirror.git] / net / irda / irlan / irlan_provider.c
blob5cf5e6c872bb361a1be8a919e5092c68135fa009
1 /*********************************************************************
2 *
3 * Filename: irlan_provider.c
4 * Version: 0.9
5 * Description: IrDA LAN Access Protocol Implementation
6 * Status: Experimental.
7 * Author: Dag Brattli <dagb@cs.uit.no>
8 * Created at: Sun Aug 31 20:14:37 1997
9 * Modified at: Sat Oct 30 12:52:10 1999
10 * Modified by: Dag Brattli <dagb@cs.uit.no>
11 * Sources: skeleton.c by Donald Becker <becker@CESDIS.gsfc.nasa.gov>
12 * slip.c by Laurence Culhane, <loz@holmes.demon.co.uk>
13 * Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
14 *
15 * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
16 * All Rights Reserved.
17 *
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License as
20 * published by the Free Software Foundation; either version 2 of
21 * the License, or (at your option) any later version.
22 *
23 * Neither Dag Brattli nor University of Tromsø admit liability nor
24 * provide warranty for any of this software. This material is
25 * provided "AS-IS" and at no charge.
26 *
27 ********************************************************************/
28
29 #include <linux/kernel.h>
30 #include <linux/string.h>
31 #include <linux/errno.h>
32 #include <linux/netdevice.h>
33 #include <linux/etherdevice.h>
34 #include <linux/init.h>
35 #include <linux/random.h>
36 #include <linux/bitops.h>
37 #include <linux/slab.h>
38
39 #include <asm/system.h>
40 #include <asm/byteorder.h>
41
42 #include <net/irda/irda.h>
43 #include <net/irda/irttp.h>
44 #include <net/irda/irlmp.h>
45 #include <net/irda/irias_object.h>
46 #include <net/irda/iriap.h>
47 #include <net/irda/timer.h>
48
49 #include <net/irda/irlan_common.h>
50 #include <net/irda/irlan_eth.h>
51 #include <net/irda/irlan_event.h>
52 #include <net/irda/irlan_provider.h>
53 #include <net/irda/irlan_filter.h>
54 #include <net/irda/irlan_client.h>
55
56 static void irlan_provider_connect_indication(void *instance, void *sap,
57 struct qos_info *qos,
58 __u32 max_sdu_size,
59 __u8 max_header_size,
60 struct sk_buff *skb);
61
62 /*
63 * Function irlan_provider_control_data_indication (handle, skb)
64 *
65 * This function gets the data that is received on the control channel
66 *
67 */
68 static int irlan_provider_data_indication(void *instance, void *sap,
69 struct sk_buff *skb)
70 {
71 struct irlan_cb *self;
72 __u8 code;
73
74 IRDA_DEBUG(4, "%s()\n", __func__ );
75
76 self = (struct irlan_cb *) instance;
77
78 IRDA_ASSERT(self != NULL, return -1;);
79 IRDA_ASSERT(self->magic == IRLAN_MAGIC, return -1;);
80
81 IRDA_ASSERT(skb != NULL, return -1;);
82
83 code = skb->data[0];
84 switch(code) {
85 case CMD_GET_PROVIDER_INFO:
86 IRDA_DEBUG(4, "Got GET_PROVIDER_INFO command!\n");
87 irlan_do_provider_event(self, IRLAN_GET_INFO_CMD, skb);
88 break;
89
90 case CMD_GET_MEDIA_CHAR:
91 IRDA_DEBUG(4, "Got GET_MEDIA_CHAR command!\n");
92 irlan_do_provider_event(self, IRLAN_GET_MEDIA_CMD, skb);
93 break;
94 case CMD_OPEN_DATA_CHANNEL:
95 IRDA_DEBUG(4, "Got OPEN_DATA_CHANNEL command!\n");
96 irlan_do_provider_event(self, IRLAN_OPEN_DATA_CMD, skb);
97 break;
98 case CMD_FILTER_OPERATION:
99 IRDA_DEBUG(4, "Got FILTER_OPERATION command!\n");
100 irlan_do_provider_event(self, IRLAN_FILTER_CONFIG_CMD, skb);
101 break;
102 case CMD_RECONNECT_DATA_CHAN:
103 IRDA_DEBUG(2, "%s(), Got RECONNECT_DATA_CHAN command\n", __func__ );
104 IRDA_DEBUG(2, "%s(), NOT IMPLEMENTED\n", __func__ );
105 break;
106 case CMD_CLOSE_DATA_CHAN:
107 IRDA_DEBUG(2, "Got CLOSE_DATA_CHAN command!\n");
108 IRDA_DEBUG(2, "%s(), NOT IMPLEMENTED\n", __func__ );
109 break;
110 default:
111 IRDA_DEBUG(2, "%s(), Unknown command!\n", __func__ );
112 break;
113 }
114 return 0;
115 }
116
117 /*
118 * Function irlan_provider_connect_indication (handle, skb, priv)
119 *
120 * Got connection from peer IrLAN client
121 *
122 */
123 static void irlan_provider_connect_indication(void *instance, void *sap,
124 struct qos_info *qos,
125 __u32 max_sdu_size,
126 __u8 max_header_size,
127 struct sk_buff *skb)
128 {
129 struct irlan_cb *self;
130 struct tsap_cb *tsap;
131 __u32 saddr, daddr;
132
133 IRDA_DEBUG(0, "%s()\n", __func__ );
134
135 self = (struct irlan_cb *) instance;
136 tsap = (struct tsap_cb *) sap;
137
138 IRDA_ASSERT(self != NULL, return;);
139 IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
140
141 IRDA_ASSERT(tsap == self->provider.tsap_ctrl,return;);
142 IRDA_ASSERT(self->provider.state == IRLAN_IDLE, return;);
143
144 daddr = irttp_get_daddr(tsap);
145 saddr = irttp_get_saddr(tsap);
146 self->provider.max_sdu_size = max_sdu_size;
147 self->provider.max_header_size = max_header_size;
148
149 irlan_do_provider_event(self, IRLAN_CONNECT_INDICATION, NULL);
150
151 /*
152 * If we are in peer mode, the client may not have got the discovery
153 * indication it needs to make progress. If the client is still in
154 * IDLE state, we must kick it.
155 */
156 if ((self->provider.access_type == ACCESS_PEER) &&
157 (self->client.state == IRLAN_IDLE))
158 {
159 irlan_client_wakeup(self, self->saddr, self->daddr);
160 }
161 }
162
163 /*
164 * Function irlan_provider_connect_response (handle)
165 *
166 * Accept incoming connection
167 *
168 */
169 void irlan_provider_connect_response(struct irlan_cb *self,
170 struct tsap_cb *tsap)
171 {
172 IRDA_ASSERT(self != NULL, return;);
173 IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
174
175 /* Just accept */
176 irttp_connect_response(tsap, IRLAN_MTU, NULL);
177 }
178
179 static void irlan_provider_disconnect_indication(void *instance, void *sap,
180 LM_REASON reason,
181 struct sk_buff *userdata)
182 {
183 struct irlan_cb *self;
184 struct tsap_cb *tsap;
185
186 IRDA_DEBUG(4, "%s(), reason=%d\n", __func__ , reason);
187
188 self = (struct irlan_cb *) instance;
189 tsap = (struct tsap_cb *) sap;
190
191 IRDA_ASSERT(self != NULL, return;);
192 IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
193 IRDA_ASSERT(tsap != NULL, return;);
194 IRDA_ASSERT(tsap->magic == TTP_TSAP_MAGIC, return;);
195
196 IRDA_ASSERT(tsap == self->provider.tsap_ctrl, return;);
197
198 irlan_do_provider_event(self, IRLAN_LMP_DISCONNECT, NULL);
199 }
200
201 /*
202 * Function irlan_parse_open_data_cmd (self, skb)
203 *
204 *
205 *
206 */
207 int irlan_parse_open_data_cmd(struct irlan_cb *self, struct sk_buff *skb)
208 {
209 int ret;
210
211 ret = irlan_provider_parse_command(self, CMD_OPEN_DATA_CHANNEL, skb);
212
213 /* Open data channel */
214 irlan_open_data_tsap(self);
215
216 return ret;
217 }
218
219 /*
220 * Function parse_command (skb)
221 *
222 * Extract all parameters from received buffer, then feed them to
223 * check_params for parsing
224 *
225 */
226 int irlan_provider_parse_command(struct irlan_cb *self, int cmd,
227 struct sk_buff *skb)
228 {
229 __u8 *frame;
230 __u8 *ptr;
231 int count;
232 __u16 val_len;
233 int i;
234 char *name;
235 char *value;
236 int ret = RSP_SUCCESS;
237
238 IRDA_ASSERT(skb != NULL, return -RSP_PROTOCOL_ERROR;);
239
240 IRDA_DEBUG(4, "%s(), skb->len=%d\n", __func__ , (int)skb->len);
241
242 IRDA_ASSERT(self != NULL, return -RSP_PROTOCOL_ERROR;);
243 IRDA_ASSERT(self->magic == IRLAN_MAGIC, return -RSP_PROTOCOL_ERROR;);
244
245 if (!skb)
246 return -RSP_PROTOCOL_ERROR;
247
248 frame = skb->data;
249
250 name = kmalloc(255, GFP_ATOMIC);
251 if (!name)
252 return -RSP_INSUFFICIENT_RESOURCES;
253 value = kmalloc(1016, GFP_ATOMIC);
254 if (!value) {
255 kfree(name);
256 return -RSP_INSUFFICIENT_RESOURCES;
257 }
258
259 /* How many parameters? */
260 count = frame[1];
261
262 IRDA_DEBUG(4, "Got %d parameters\n", count);
263
264 ptr = frame+2;
265
266 /* For all parameters */
267 for (i=0; i<count;i++) {
268 ret = irlan_extract_param(ptr, name, value, &val_len);
269 if (ret < 0) {
270 IRDA_DEBUG(2, "%s(), IrLAN, Error!\n", __func__ );
271 break;
272 }
273 ptr+=ret;
274 ret = RSP_SUCCESS;
275 irlan_check_command_param(self, name, value);
276 }
277 /* Cleanup */
278 kfree(name);
279 kfree(value);
280
281 return ret;
282 }
283
284 /*
285 * Function irlan_provider_send_reply (self, info)
286 *
287 * Send reply to query to peer IrLAN layer
288 *
289 */
290 void irlan_provider_send_reply(struct irlan_cb *self, int command,
291 int ret_code)
292 {
293 struct sk_buff *skb;
294
295 IRDA_DEBUG(4, "%s()\n", __func__ );
296
297 IRDA_ASSERT(self != NULL, return;);
298 IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
299
300 skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER +
301 /* Bigger param length comes from CMD_GET_MEDIA_CHAR */
302 IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "DIRECTED") +
303 IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "BORADCAST") +
304 IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "MULTICAST") +
305 IRLAN_STRING_PARAMETER_LEN("ACCESS_TYPE", "HOSTED"),
306 GFP_ATOMIC);
307
308 if (!skb)
309 return;
310
311 /* Reserve space for TTP, LMP, and LAP header */
312 skb_reserve(skb, self->provider.max_header_size);
313 skb_put(skb, 2);
314
315 switch (command) {
316 case CMD_GET_PROVIDER_INFO:
317 skb->data[0] = 0x00; /* Success */
318 skb->data[1] = 0x02; /* 2 parameters */
319 switch (self->media) {
320 case MEDIA_802_3:
321 irlan_insert_string_param(skb, "MEDIA", "802.3");
322 break;
323 case MEDIA_802_5:
324 irlan_insert_string_param(skb, "MEDIA", "802.5");
325 break;
326 default:
327 IRDA_DEBUG(2, "%s(), unknown media type!\n", __func__ );
328 break;
329 }
330 irlan_insert_short_param(skb, "IRLAN_VER", 0x0101);
331 break;
332
333 case CMD_GET_MEDIA_CHAR:
334 skb->data[0] = 0x00; /* Success */
335 skb->data[1] = 0x05; /* 5 parameters */
336 irlan_insert_string_param(skb, "FILTER_TYPE", "DIRECTED");
337 irlan_insert_string_param(skb, "FILTER_TYPE", "BROADCAST");
338 irlan_insert_string_param(skb, "FILTER_TYPE", "MULTICAST");
339
340 switch (self->provider.access_type) {
341 case ACCESS_DIRECT:
342 irlan_insert_string_param(skb, "ACCESS_TYPE", "DIRECT");
343 break;
344 case ACCESS_PEER:
345 irlan_insert_string_param(skb, "ACCESS_TYPE", "PEER");
346 break;
347 case ACCESS_HOSTED:
348 irlan_insert_string_param(skb, "ACCESS_TYPE", "HOSTED");
349 break;
350 default:
351 IRDA_DEBUG(2, "%s(), Unknown access type\n", __func__ );
352 break;
353 }
354 irlan_insert_short_param(skb, "MAX_FRAME", 0x05ee);
355 break;
356 case CMD_OPEN_DATA_CHANNEL:
357 skb->data[0] = 0x00; /* Success */
358 if (self->provider.send_arb_val) {
359 skb->data[1] = 0x03; /* 3 parameters */
360 irlan_insert_short_param(skb, "CON_ARB",
361 self->provider.send_arb_val);
362 } else
363 skb->data[1] = 0x02; /* 2 parameters */
364 irlan_insert_byte_param(skb, "DATA_CHAN", self->stsap_sel_data);
365 irlan_insert_string_param(skb, "RECONNECT_KEY", "LINUX RULES!");
366 break;
367 case CMD_FILTER_OPERATION:
368 irlan_filter_request(self, skb);
369 break;
370 default:
371 IRDA_DEBUG(2, "%s(), Unknown command!\n", __func__ );
372 break;
373 }
374
375 irttp_data_request(self->provider.tsap_ctrl, skb);
376 }
377
378 /*
379 * Function irlan_provider_register(void)
380 *
381 * Register provider support so we can accept incoming connections.
382 *
383 */
384 int irlan_provider_open_ctrl_tsap(struct irlan_cb *self)
385 {
386 struct tsap_cb *tsap;
387 notify_t notify;
388
389 IRDA_DEBUG(4, "%s()\n", __func__ );
390
391 IRDA_ASSERT(self != NULL, return -1;);
392 IRDA_ASSERT(self->magic == IRLAN_MAGIC, return -1;);
393
394 /* Check if already open */
395 if (self->provider.tsap_ctrl)
396 return -1;
397
398 /*
399 * First register well known control TSAP
400 */
401 irda_notify_init(&notify);
402 notify.data_indication = irlan_provider_data_indication;
403 notify.connect_indication = irlan_provider_connect_indication;
404 notify.disconnect_indication = irlan_provider_disconnect_indication;
405 notify.instance = self;
406 strlcpy(notify.name, "IrLAN ctrl (p)", sizeof(notify.name));
407
408 tsap = irttp_open_tsap(LSAP_ANY, 1, &notify);
409 if (!tsap) {
410 IRDA_DEBUG(2, "%s(), Got no tsap!\n", __func__ );
411 return -1;
412 }
413 self->provider.tsap_ctrl = tsap;
414
415 /* Register with LM-IAS */
416 irlan_ias_register(self, tsap->stsap_sel);
417
418 return 0;
419 }
420
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