net/irda/iriap.c

   1 /*********************************************************************
   2  *
   3  * Filename:      iriap.c
   4  * Version:       0.8
   5  * Description:   Information Access Protocol (IAP)
   6  * Status:        Experimental.
   7  * Author:        Dag Brattli <dagb@cs.uit.no>
   8  * Created at:    Thu Aug 21 00:02:07 1997
   9  * Modified at:   Sat Oct  9 17:00:56 1999
  10  * Modified by:   Dag Brattli <dagb@cs.uit.no>
  11  *
  12  *     Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
  13  *     All Rights Reserved.
  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
  18  *     the License, or (at your option) any later version.
  19  *
  20  *     Neither Dag Brattli nor University of Tromsø admit liability nor
  21  *     provide warranty for any of this software. This material is
  22  *     provided "AS-IS" and at no charge.
  23  *
  24  ********************************************************************/
  25
  26 #include <linux/config.h>
  27 #include <linux/types.h>
  28 #include <linux/skbuff.h>
  29 #include <linux/string.h>
  30 #include <linux/init.h>
  31
  32 #include <asm/byteorder.h>
  33 #include <asm/unaligned.h>
  34
  35 #include <net/irda/irda.h>
  36 #include <net/irda/irttp.h>
  37 #include <net/irda/irmod.h>
  38 #include <net/irda/irlmp.h>
  39 #include <net/irda/irias_object.h>
  40 #include <net/irda/iriap_event.h>
  41 #include <net/irda/iriap.h>
  42
  43 /* FIXME: This one should go in irlmp.c */
  44 static const char *ias_charset_types[] = {
  45         "CS_ASCII",
  46         "CS_ISO_8859_1",
  47         "CS_ISO_8859_2",
  48         "CS_ISO_8859_3",
  49         "CS_ISO_8859_4",
  50         "CS_ISO_8859_5",
  51         "CS_ISO_8859_6",
  52         "CS_ISO_8859_7",
  53         "CS_ISO_8859_8",
  54         "CS_ISO_8859_9",
  55         "CS_UNICODE"
  56 };
  57
  58 static hashbin_t *iriap = NULL;
  59 static __u32 service_handle;
  60
  61 extern char *lmp_reasons[];
  62
  63 static struct iriap_cb *iriap_open( __u8 slsap, int mode);
  64 static void __iriap_close(struct iriap_cb *self);
  65 static void iriap_disconnect_indication(void *instance, void *sap,
  66                                         LM_REASON reason, struct sk_buff *skb);
  67 static void iriap_connect_indication(void *instance, void *sap,
  68                                      struct qos_info *qos, __u32 max_sdu_size,
  69                                      __u8 max_header_size,
  70                                      struct sk_buff *skb);
  71 static void iriap_connect_confirm(void *instance, void *sap,
  72                                   struct qos_info *qos,
  73                                   __u32 max_sdu_size, __u8 max_header_size,
  74                                   struct sk_buff *skb);
  75 static int iriap_data_indication(void *instance, void *sap,
  76                                  struct sk_buff *skb);
  77
  78 /*
  79  * Function iriap_init (void)
  80  *
  81  *    Initializes the IrIAP layer, called by the module initialization code
  82  *    in irmod.c
  83  */
  84 int __init iriap_init(void)
  85 {
  86         __u16 hints;
  87         struct ias_object *obj;
  88
  89         /* Allocate master array */
  90         iriap = hashbin_new(HB_LOCAL);
  91         if (!iriap)
  92                 return -ENOMEM;
  93
  94         objects = hashbin_new(HB_LOCAL);
  95         if (!objects) {
  96                 WARNING(__FUNCTION__ "(), Can't allocate objects hashbin!\n");
  97                 return -ENOMEM;
  98         }
  99
 100         /*
 101          *  Register some default services for IrLMP
 102          */
 103         hints  = irlmp_service_to_hint(S_COMPUTER);
 104         hints |= irlmp_service_to_hint(S_PNP);
 105         service_handle = irlmp_register_service(hints);
 106
 107         /*
 108          *  Register the Device object with LM-IAS
 109          */
 110         obj = irias_new_object("Device", IAS_DEVICE_ID);
 111         irias_add_string_attrib(obj, "DeviceName", "Linux");
 112         irias_insert_object(obj);
 113
 114         /*
 115          *  Register server support with IrLMP so we can accept incoming
 116          *  connections
 117          */
 118         iriap_open(LSAP_IAS, IAS_SERVER);
 119
 120         return 0;
 121 }
 122
 123 /*
 124  * Function iriap_cleanup (void)
 125  *
 126  *    Initializes the IrIAP layer, called by the module cleanup code in
 127  *    irmod.c
 128  */
 129 void iriap_cleanup(void)
 130 {
 131         irlmp_unregister_service(service_handle);
 132
 133         hashbin_delete(iriap, (FREE_FUNC) __iriap_close);
 134         hashbin_delete(objects, (FREE_FUNC) __irias_delete_object);
 135 }
 136
 137 /*
 138  * Function iriap_open (void)
 139  *
 140  *    Opens an instance of the IrIAP layer, and registers with IrLMP
 141  */
 142 struct iriap_cb *iriap_open(__u8 slsap_sel, int mode)
 143 {
 144         struct iriap_cb *self;
 145         struct lsap_cb *lsap;
 146         notify_t notify;
 147
 148         IRDA_DEBUG(4, __FUNCTION__ "()\n");
 149
 150         self = kmalloc(sizeof(struct iriap_cb), GFP_ATOMIC);
 151         if (!self) {
 152                 WARNING(__FUNCTION__ "(), Unable to kmalloc!\n");
 153                 return NULL;
 154         }
 155
 156         /*
 157          *  Initialize instance
 158          */
 159         memset(self, 0, sizeof(struct iriap_cb));
 160
 161         irda_notify_init(&notify);
 162         notify.connect_confirm       = iriap_connect_confirm;
 163         notify.connect_indication    = iriap_connect_indication;
 164         notify.disconnect_indication = iriap_disconnect_indication;
 165         notify.data_indication       = iriap_data_indication;
 166         notify.instance = self;
 167         if (mode == IAS_CLIENT)
 168                 strcpy(notify.name, "IrIAS cli");
 169         else
 170                 strcpy(notify.name, "IrIAS srv");
 171
 172         lsap = irlmp_open_lsap(slsap_sel, &notify);
 173         if (lsap == NULL) {
 174                 ERROR(__FUNCTION__ "(), Unable to allocated LSAP!\n");
 175                 return NULL;
 176         }
 177         slsap_sel = lsap->slsap_sel;
 178
 179         self->magic = IAS_MAGIC;
 180         self->lsap = lsap;
 181         self->slsap_sel = slsap_sel;
 182         self->mode = mode;
 183
 184         init_timer(&self->watchdog_timer);
 185
 186         hashbin_insert(iriap, (queue_t *) self, slsap_sel, NULL);
 187
 188         /* Initialize state machines */
 189         iriap_next_client_state(self, S_DISCONNECT);
 190         iriap_next_call_state(self, S_MAKE_CALL);
 191         iriap_next_server_state(self, R_DISCONNECT);
 192         iriap_next_r_connect_state(self, R_WAITING);
 193
 194         return self;
 195 }
 196
 197 /*
 198  * Function __iriap_close (self)
 199  *
 200  *    Removes (deallocates) the IrIAP instance
 201  *
 202  */
 203 static void __iriap_close(struct iriap_cb *self)
 204 {
 205         IRDA_DEBUG(4, __FUNCTION__ "()\n");
 206
 207         ASSERT(self != NULL, return;);
 208         ASSERT(self->magic == IAS_MAGIC, return;);
 209
 210         del_timer(&self->watchdog_timer);
 211
 212         self->magic = 0;
 213
 214         kfree(self);
 215 }
 216
 217 /*
 218  * Function iriap_close (void)
 219  *
 220  *    Closes IrIAP and deregisters with IrLMP
 221  */
 222 void iriap_close(struct iriap_cb *self)
 223 {
 224         struct iriap_cb *entry;
 225
 226         ASSERT(self != NULL, return;);
 227         ASSERT(self->magic == IAS_MAGIC, return;);
 228
 229         if (self->lsap) {
 230                 irlmp_close_lsap(self->lsap);
 231                 self->lsap = NULL;
 232         }
 233
 234         entry = (struct iriap_cb *) hashbin_remove(iriap, self->slsap_sel,
 235                                                    NULL);
 236         ASSERT(entry == self, return;);
 237
 238         __iriap_close(self);
 239 }
 240
 241 /*
 242  * Function iriap_disconnect_indication (handle, reason)
 243  *
 244  *    Got disconnect, so clean up everything assosiated with this connection
 245  *
 246  */
 247 static void iriap_disconnect_indication(void *instance, void *sap,
 248                                         LM_REASON reason,
 249                                         struct sk_buff *userdata)
 250 {
 251         struct iriap_cb *self;
 252
 253         IRDA_DEBUG(4, __FUNCTION__ "(), reason=%s\n", lmp_reasons[reason]);
 254
 255         self = (struct iriap_cb *) instance;
 256
 257         ASSERT(self != NULL, return;);
 258         ASSERT(self->magic == IAS_MAGIC, return;);
 259
 260         ASSERT(iriap != NULL, return;);
 261
 262         del_timer(&self->watchdog_timer);
 263
 264         if (self->mode == IAS_CLIENT) {
 265                 IRDA_DEBUG(4, __FUNCTION__ "(), disconnect as client\n");
 266
 267                 /*
 268                  * Inform service user that the request failed by sending
 269                  * it a NULL value.
 270                  */
 271                 if (self->confirm)
 272                         self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
 273
 274
 275                 iriap_do_client_event(self, IAP_LM_DISCONNECT_INDICATION,
 276                                       NULL);
 277                 /* Close instance only if client */
 278                 iriap_close(self);
 279
 280         } else {
 281                 IRDA_DEBUG(4, __FUNCTION__ "(), disconnect as server\n");
 282                 iriap_do_server_event(self, IAP_LM_DISCONNECT_INDICATION,
 283                                       NULL);
 284         }
 285
 286         if (userdata)
 287                 dev_kfree_skb(userdata);
 288 }
 289
 290 /*
 291  * Function iriap_disconnect_request (handle)
 292  *
 293  *
 294  *
 295  */
 296 void iriap_disconnect_request(struct iriap_cb *self)
 297 {
 298         struct sk_buff *skb;
 299
 300         IRDA_DEBUG(4, __FUNCTION__ "()\n");
 301
 302         ASSERT(self != NULL, return;);
 303         ASSERT(self->magic == IAS_MAGIC, return;);
 304
 305         skb = dev_alloc_skb(64);
 306         if (skb == NULL) {
 307                 IRDA_DEBUG(0, __FUNCTION__
 308                       "(), Could not allocate an sk_buff of length %d\n", 64);
 309                 return;
 310         }
 311
 312         /*
 313          *  Reserve space for MUX control and LAP header
 314          */
 315         skb_reserve(skb, LMP_MAX_HEADER);
 316
 317         irlmp_disconnect_request(self->lsap, skb);
 318 }
 319
 320 void iriap_getinfobasedetails_request(void)
 321 {
 322         IRDA_DEBUG(0, __FUNCTION__ "(), Not implemented!\n");
 323 }
 324
 325 void iriap_getinfobasedetails_confirm(void)
 326 {
 327         IRDA_DEBUG(0, __FUNCTION__ "(), Not implemented!\n");
 328 }
 329
 330 void iriap_getobjects_request(void)
 331 {
 332         IRDA_DEBUG(0, __FUNCTION__ "(), Not implemented!\n");
 333 }
 334
 335 void iriap_getobjects_confirm(void)
 336 {
 337         IRDA_DEBUG(0, __FUNCTION__ "(), Not implemented!\n");
 338 }
 339
 340 void iriap_getvalue(void)
 341 {
 342         IRDA_DEBUG(0, __FUNCTION__ "(), Not implemented!\n");
 343 }
 344
 345 /*
 346  * Function iriap_getvaluebyclass (addr, name, attr)
 347  *
 348  *    Retreive all values from attribute in all objects with given class
 349  *    name
 350  */
 351 void iriap_getvaluebyclass_request(char *name, char *attr,
 352                                    __u32 saddr, __u32 daddr,
 353                                    CONFIRM_CALLBACK callback, void *priv)
 354 {
 355         struct sk_buff *skb;
 356         struct iriap_cb *self;
 357         int name_len, attr_len;
 358         __u8 slsap = LSAP_ANY;  /* Source LSAP to use */
 359         __u8 *frame;
 360
 361         /* Client must supply the destination device address */
 362         if (!daddr)
 363                 return;
 364
 365         self = iriap_open(slsap, IAS_CLIENT);
 366         if (!self)
 367                 return;
 368
 369         self->mode = IAS_CLIENT;
 370         self->confirm = callback;
 371         self->priv = priv;
 372
 373         self->daddr = daddr;
 374         self->saddr = saddr;
 375
 376         /*
 377          *  Save operation, so we know what the later indication is about
 378          */
 379         self->operation = GET_VALUE_BY_CLASS;
 380
 381         /* Give ourselves 10 secs to finish this operation */
 382         iriap_start_watchdog_timer(self, 10*HZ);
 383
 384         skb = dev_alloc_skb(64);
 385         if (!skb)
 386                 return;
 387
 388         name_len = strlen(name);
 389         attr_len = strlen(attr);
 390
 391         /* Reserve space for MUX and LAP header */
 392         skb_reserve(skb, self->max_header_size);
 393         skb_put(skb, 3+name_len+attr_len);
 394         frame = skb->data;
 395
 396         /* Build frame */
 397         frame[0] = IAP_LST | GET_VALUE_BY_CLASS;
 398         frame[1] = name_len;                       /* Insert length of name */
 399         memcpy(frame+2, name, name_len);           /* Insert name */
 400         frame[2+name_len] = attr_len;              /* Insert length of attr */
 401         memcpy(frame+3+name_len, attr, attr_len);  /* Insert attr */
 402
 403         iriap_do_client_event(self, IAP_CALL_REQUEST_GVBC, skb);
 404 }
 405
 406 /*
 407  * Function iriap_getvaluebyclass_confirm (self, skb)
 408  *
 409  *    Got result from GetValueByClass command. Parse it and return result
 410  *    to service user.
 411  *
 412  */
 413 void iriap_getvaluebyclass_confirm(struct iriap_cb *self, struct sk_buff *skb)
 414 {
 415         struct ias_value *value;
 416         int charset;
 417         __u32 value_len;
 418         __u32 tmp_cpu32;
 419         __u16 obj_id;
 420         __u16 len;
 421         __u8  type;
 422         __u8 *fp;
 423         int n;
 424
 425         ASSERT(self != NULL, return;);
 426         ASSERT(self->magic == IAS_MAGIC, return;);
 427         ASSERT(skb != NULL, return;);
 428
 429         /* Initialize variables */
 430         fp = skb->data;
 431         n = 2;
 432
 433         /* Get length, MSB first */
 434         len = be16_to_cpu(get_unaligned((__u16 *)(fp+n))); n += 2;
 435
 436         IRDA_DEBUG(4, __FUNCTION__ "(), len=%d\n", len);
 437
 438         /* Get object ID, MSB first */
 439         obj_id = be16_to_cpu(get_unaligned((__u16 *)(fp+n))); n += 2;
 440
 441         type = fp[n++];
 442         IRDA_DEBUG(4, __FUNCTION__ "(), Value type = %d\n", type);
 443
 444         switch (type) {
 445         case IAS_INTEGER:
 446                 memcpy(&tmp_cpu32, fp+n, 4); n += 4;
 447                 be32_to_cpus(&tmp_cpu32);
 448                 value = irias_new_integer_value(tmp_cpu32);
 449
 450                 /*  Legal values restricted to 0x01-0x6f, page 15 irttp */
 451                 IRDA_DEBUG(4, __FUNCTION__ "(), lsap=%d\n", value->t.integer);
 452                 break;
 453         case IAS_STRING:
 454                 charset = fp[n++];
 455
 456                 switch (charset) {
 457                 case CS_ASCII:
 458                         break;
 459 /*              case CS_ISO_8859_1: */
 460 /*              case CS_ISO_8859_2: */
 461 /*              case CS_ISO_8859_3: */
 462 /*              case CS_ISO_8859_4: */
 463 /*              case CS_ISO_8859_5: */
 464 /*              case CS_ISO_8859_6: */
 465 /*              case CS_ISO_8859_7: */
 466 /*              case CS_ISO_8859_8: */
 467 /*              case CS_ISO_8859_9: */
 468 /*              case CS_UNICODE: */
 469                 default:
 470                         IRDA_DEBUG(0, __FUNCTION__"(), charset %s, not supported\n",
 471                               ias_charset_types[charset]);
 472                         return;
 473                         /* break; */
 474                 }
 475                 value_len = fp[n++];
 476                 IRDA_DEBUG(4, __FUNCTION__ "(), strlen=%d\n", value_len);
 477                 ASSERT(value_len < 64, return;);
 478
 479                 /* Make sure the string is null-terminated */
 480                 fp[n+value_len] = 0x00;
 481
 482                 IRDA_DEBUG(4, "Got string %s\n", fp+n);
 483                 value = irias_new_string_value(fp+n);
 484                 break;
 485         case IAS_OCT_SEQ:
 486                 value_len = be16_to_cpu(get_unaligned((__u16 *)(fp+n)));
 487                 n += 2;
 488
 489                 ASSERT(value_len <= 55, return;);
 490
 491                 value = irias_new_octseq_value(fp+n, value_len);
 492                 break;
 493         default:
 494                 value = &missing;
 495                 break;
 496         }
 497
 498         /* Finished, close connection! */
 499         iriap_disconnect_request(self);
 500
 501         if (self->confirm)
 502                 self->confirm(IAS_SUCCESS, obj_id, value, self->priv);
 503 }
 504
 505 /*
 506  * Function iriap_getvaluebyclass_response ()
 507  *
 508  *    Send answer back to remote LM-IAS
 509  *
 510  */
 511 void iriap_getvaluebyclass_response(struct iriap_cb *self, __u16 obj_id,
 512                                     __u8 ret_code, struct ias_value *value)
 513 {
 514         struct sk_buff *skb;
 515         int n;
 516         __u32 tmp_be32, tmp_be16;
 517         __u8 *fp;
 518
 519         IRDA_DEBUG(4, __FUNCTION__ "()\n");
 520
 521         ASSERT(self != NULL, return;);
 522         ASSERT(self->magic == IAS_MAGIC, return;);
 523         ASSERT(value != NULL, return;);
 524         ASSERT(value->len <= 1024, return;);
 525
 526         /* Initialize variables */
 527         n = 0;
 528
 529         /*
 530          *  We must adjust the size of the response after the length of the
 531          *  value. We add 9 bytes because of the 6 bytes for the frame and
 532          *  max 3 bytes for the value coding.
 533          */
 534         skb = dev_alloc_skb(value->len + self->max_header_size + 9);
 535         if (!skb)
 536                 return;
 537
 538         /* Reserve space for MUX and LAP header */
 539         skb_reserve(skb, self->max_header_size);
 540         skb_put(skb, 6);
 541
 542         fp = skb->data;
 543
 544         /* Build frame */
 545         fp[n++] = GET_VALUE_BY_CLASS | IAP_LST;
 546         fp[n++] = ret_code;
 547
 548         /* Insert list length (MSB first) */
 549         tmp_be16 = __constant_htons(0x0001);
 550         memcpy(fp+n, &tmp_be16, 2);  n += 2;
 551
 552         /* Insert object identifier ( MSB first) */
 553         tmp_be16 = cpu_to_be16(obj_id);
 554         memcpy(fp+n, &tmp_be16, 2); n += 2;
 555
 556         switch(value->type) {
 557         case IAS_STRING:
 558                 skb_put(skb, 3 + value->len);
 559                 fp[n++] = value->type;
 560                 fp[n++] = 0; /* ASCII */
 561                 fp[n++] = (__u8) value->len;
 562                 memcpy(fp+n, value->t.string, value->len); n+=value->len;
 563                 break;
 564         case IAS_INTEGER:
 565                 skb_put(skb, 5);
 566                 fp[n++] = value->type;
 567
 568                 tmp_be32 = cpu_to_be32(value->t.integer);
 569                 memcpy(fp+n, &tmp_be32, 4); n += 4;
 570                 break;
 571         case IAS_OCT_SEQ:
 572                 skb_put(skb, 3 + value->len);
 573                 fp[n++] = value->type;
 574
 575                 tmp_be16 = cpu_to_be16(value->len);
 576                 memcpy(fp+n, &tmp_be16, 2); n += 2;
 577                 memcpy(fp+n, value->t.oct_seq, value->len); n+=value->len;
 578                 break;
 579         case IAS_MISSING:
 580                 IRDA_DEBUG( 3, __FUNCTION__ ": sending IAS_MISSING\n");
 581                 skb_put( skb, 1);
 582                 fp[n++] = value->type;
 583                 break;
 584         default:
 585                 IRDA_DEBUG(0, __FUNCTION__ "(), type not implemented!\n");
 586                 break;
 587         }
 588         iriap_do_r_connect_event(self, IAP_CALL_RESPONSE, skb);
 589 }
 590
 591 /*
 592  * Function iriap_getvaluebyclass_indication (self, skb)
 593  *
 594  *    getvaluebyclass is requested from peer LM-IAS
 595  *
 596  */
 597 void iriap_getvaluebyclass_indication(struct iriap_cb *self,
 598                                       struct sk_buff *skb)
 599 {
 600         struct ias_object *obj;
 601         struct ias_attrib *attrib;
 602         int name_len;
 603         int attr_len;
 604         char name[64];
 605         char attr[64];
 606         __u8 *fp;
 607         int n;
 608
 609         IRDA_DEBUG(4, __FUNCTION__ "()\n");
 610
 611         ASSERT(self != NULL, return;);
 612         ASSERT(self->magic == IAS_MAGIC, return;);
 613         ASSERT(skb != NULL, return;);
 614
 615         fp = skb->data;
 616         n = 1;
 617
 618         name_len = fp[n++];
 619         memcpy(name, fp+n, name_len); n+=name_len;
 620         name[name_len] = '\0';
 621
 622         attr_len = fp[n++];
 623         memcpy(attr, fp+n, attr_len); n+=attr_len;
 624         attr[attr_len] = '\0';
 625
 626         dev_kfree_skb(skb);
 627
 628         /*
 629          *  Now, do some advanced parsing! :-)
 630          */
 631         IRDA_DEBUG(4, "LM-IAS: Looking up %s: %s\n", name, attr);
 632         obj = irias_find_object(name);
 633
 634         if (obj == NULL) {
 635                 IRDA_DEBUG(0, "LM-IAS: Object not found\n");
 636                 iriap_getvaluebyclass_response(self, 0x1235, IAS_CLASS_UNKNOWN,
 637                                                &missing);
 638                 return;
 639         }
 640         IRDA_DEBUG(4, "LM-IAS: found %s, id=%d\n", obj->name, obj->id);
 641
 642         attrib = irias_find_attrib(obj, attr);
 643         if (attrib == NULL) {
 644                 IRDA_DEBUG(0, "LM-IAS: Attribute %s not found\n", attr);
 645                 iriap_getvaluebyclass_response(self, obj->id,
 646                                                IAS_ATTRIB_UNKNOWN, &missing);
 647                 return;
 648         }
 649
 650         IRDA_DEBUG(4, "LM-IAS: found %s\n", attrib->name);
 651
 652         /*
 653          * We have a match; send the value.
 654          */
 655         iriap_getvaluebyclass_response(self, obj->id, IAS_SUCCESS,
 656                                        attrib->value);
 657
 658         return;
 659 }
 660
 661 /*
 662  * Function iriap_send_ack (void)
 663  *
 664  *    Currently not used
 665  *
 666  */
 667 void iriap_send_ack(struct iriap_cb *self)
 668 {
 669         struct sk_buff *skb;
 670         __u8 *frame;
 671
 672         IRDA_DEBUG(6, __FUNCTION__ "()\n");
 673
 674         ASSERT(self != NULL, return;);
 675         ASSERT(self->magic == IAS_MAGIC, return;);
 676
 677         skb = dev_alloc_skb(64);
 678         if (!skb)
 679                 return;
 680
 681         /* Reserve space for MUX and LAP header */
 682         skb_reserve(skb, self->max_header_size);
 683         skb_put(skb, 1);
 684         frame = skb->data;
 685
 686         /* Build frame */
 687         frame[0] = IAP_LST | self->operation;
 688 }
 689
 690 /*
 691  * Function iriap_connect_confirm (handle, skb)
 692  *
 693  *    LSAP connection confirmed!
 694  *
 695  */
 696 static void iriap_connect_confirm(void *instance, void *sap,
 697                                   struct qos_info *qos,
 698                                   __u32 max_sdu_size, __u8 header_size,
 699                                   struct sk_buff *userdata)
 700 {
 701         struct iriap_cb *self;
 702
 703         self = (struct iriap_cb *) instance;
 704
 705         ASSERT(self != NULL, return;);
 706         ASSERT(self->magic == IAS_MAGIC, return;);
 707         ASSERT(userdata != NULL, return;);
 708
 709         IRDA_DEBUG(4, __FUNCTION__ "()\n");
 710
 711         del_timer(&self->watchdog_timer);
 712
 713         iriap_do_client_event(self, IAP_LM_CONNECT_CONFIRM, userdata);
 714 }
 715
 716 /*
 717  * Function iriap_connect_indication ( handle, skb)
 718  *
 719  *    Remote LM-IAS is requesting connection
 720  *
 721  */
 722 static void iriap_connect_indication(void *instance, void *sap,
 723                                      struct qos_info *qos, __u32 max_sdu_size,
 724                                      __u8 header_size,
 725                                      struct sk_buff *userdata)
 726 {
 727         struct iriap_cb *self;
 728
 729         self = (struct iriap_cb *) instance;
 730
 731         ASSERT(self != NULL, return;);
 732         ASSERT(self->magic == IAS_MAGIC, return;);
 733
 734         iriap_do_server_event(self, IAP_LM_CONNECT_INDICATION, userdata);
 735 }
 736
 737 /*
 738  * Function iriap_data_indication (handle, skb)
 739  *
 740  *    Receives data from connection identified by handle from IrLMP
 741  *
 742  */
 743 static int iriap_data_indication(void *instance, void *sap,
 744                                  struct sk_buff *skb)
 745 {
 746         struct iriap_cb *self;
 747         __u8  *frame;
 748         __u8  opcode;
 749
 750         IRDA_DEBUG( 4, __FUNCTION__ "()\n");
 751
 752         self = (struct iriap_cb *) instance;
 753
 754         ASSERT(self != NULL, return 0;);
 755         ASSERT(self->magic == IAS_MAGIC, return 0;);
 756
 757         ASSERT(skb != NULL, return 0;);
 758
 759         frame = skb->data;
 760
 761         if (self->mode == IAS_SERVER) {
 762                 /* Call server */
 763                 IRDA_DEBUG(4, __FUNCTION__ "(), Calling server!\n");
 764                 iriap_do_r_connect_event( self, IAP_RECV_F_LST, skb);
 765
 766                 return 0;
 767         }
 768         opcode = frame[0];
 769         if (~opcode & IAP_LST) {
 770                 WARNING(__FUNCTION__ "(), IrIAS multiframe commands or "
 771                         "results is not implemented yet!\n");
 772                 return 0;
 773         }
 774
 775         /* Check for ack frames since they don't contain any data */
 776         if (opcode & IAP_ACK) {
 777                 IRDA_DEBUG(0, __FUNCTION__ "() Got ack frame!\n");
 778                 return 0;
 779         }
 780
 781         opcode &= ~IAP_LST; /* Mask away LST bit */
 782
 783         switch (opcode) {
 784         case GET_INFO_BASE:
 785                 IRDA_DEBUG(0, "IrLMP GetInfoBaseDetails not implemented!\n");
 786                 break;
 787         case GET_VALUE_BY_CLASS:
 788                 switch (frame[1]) {
 789                 case IAS_SUCCESS:
 790                         iriap_getvaluebyclass_confirm(self, skb);
 791                         break;
 792                 case IAS_CLASS_UNKNOWN:
 793                         WARNING(__FUNCTION__ "(), No such class!\n");
 794                         /* Finished, close connection! */
 795                         iriap_disconnect_request(self);
 796
 797                         if (self->confirm)
 798                                 self->confirm(IAS_CLASS_UNKNOWN, 0, NULL,
 799                                               self->priv);
 800                         break;
 801                 case IAS_ATTRIB_UNKNOWN:
 802                         WARNING(__FUNCTION__ "(), No such attribute!\n");
 803                         /* Finished, close connection! */
 804                         iriap_disconnect_request(self);
 805
 806                         if (self->confirm)
 807                                 self->confirm(IAS_CLASS_UNKNOWN, 0, NULL,
 808                                               self->priv);
 809                         break;
 810                 }
 811                 iriap_do_call_event(self, IAP_RECV_F_LST, skb);
 812
 813                 /*
 814                  *  We remove LSAPs used by IrIAS as a client since these
 815                  *  are more difficult to reuse!
 816                  */
 817                 iriap_close(self);
 818                 break;
 819         default:
 820                 IRDA_DEBUG(0, __FUNCTION__ "(), Unknown op-code: %02x\n", opcode);
 821                 break;
 822         }
 823         return 0;
 824 }
 825
 826 /*
 827  * Function iriap_call_indication (self, skb)
 828  *
 829  *    Received call to server from peer LM-IAS
 830  *
 831  */
 832 void iriap_call_indication(struct iriap_cb *self, struct sk_buff *skb)
 833 {
 834         __u8 *fp;
 835         __u8 opcode;
 836
 837         IRDA_DEBUG(4, __FUNCTION__ "()\n");
 838
 839         ASSERT(self != NULL, return;);
 840         ASSERT(self->magic == IAS_MAGIC, return;);
 841         ASSERT(skb != NULL, return;);
 842
 843         fp = skb->data;
 844
 845         opcode = fp[0];
 846         if (~opcode & 0x80) {
 847                 WARNING(__FUNCTION__ "(), IrIAS multiframe commands or results"
 848                         "is not implemented yet!\n");
 849                 return;
 850         }
 851         opcode &= 0x7f; /* Mask away LST bit */
 852
 853         switch (opcode) {
 854         case GET_INFO_BASE:
 855                 WARNING(__FUNCTION__
 856                         "(), GetInfoBaseDetails not implemented yet!\n");
 857                 break;
 858         case GET_VALUE_BY_CLASS:
 859                 iriap_getvaluebyclass_indication(self, skb);
 860                 break;
 861         }
 862 }
 863
 864 /*
 865  * Function iriap_watchdog_timer_expired (data)
 866  *
 867  *    Query has taken to long time, so abort
 868  *
 869  */
 870 void iriap_watchdog_timer_expired(void *data)
 871 {
 872         struct iriap_cb *self = (struct iriap_cb *) data;
 873
 874         ASSERT(self != NULL, return;);
 875         ASSERT(self->magic == IAS_MAGIC, return;);
 876
 877         iriap_close(self);
 878 }
 879
 880 #ifdef CONFIG_PROC_FS
 881
 882 static char *ias_value_types[] = {
 883         "IAS_MISSING",
 884         "IAS_INTEGER",
 885         "IAS_OCT_SEQ",
 886         "IAS_STRING"
 887 };
 888
 889 int irias_proc_read(char *buf, char **start, off_t offset, int len, int unused)
 890 {
 891         struct ias_object *obj;
 892         struct ias_attrib *attrib;
 893         unsigned long flags;
 894
 895         ASSERT( objects != NULL, return 0;);
 896
 897         save_flags( flags);
 898         cli();
 899
 900         len = 0;
 901
 902         len += sprintf(buf+len, "LM-IAS Objects:\n");
 903
 904         /* List all objects */
 905         obj = (struct ias_object *) hashbin_get_first(objects);
 906         while ( obj != NULL) {
 907                 ASSERT(obj->magic == IAS_OBJECT_MAGIC, return 0;);
 908
 909                 len += sprintf(buf+len, "name: %s, ", obj->name);
 910                 len += sprintf(buf+len, "id=%d", obj->id);
 911                 len += sprintf(buf+len, "\n");
 912
 913                 /* List all attributes for this object */
 914                 attrib = (struct ias_attrib *)
 915                         hashbin_get_first(obj->attribs);
 916                 while (attrib != NULL) {
 917                         ASSERT(attrib->magic == IAS_ATTRIB_MAGIC, return 0;);
 918
 919                         len += sprintf(buf+len, " - Attribute name: \"%s\", ",
 920                                        attrib->name);
 921                         len += sprintf(buf+len, "value[%s]: ",
 922                                        ias_value_types[attrib->value->type]);
 923
 924                         switch (attrib->value->type) {
 925                         case IAS_INTEGER:
 926                                 len += sprintf(buf+len, "%d\n",
 927                                                attrib->value->t.integer);
 928                                 break;
 929                         case IAS_STRING:
 930                                 len += sprintf(buf+len, "\"%s\"\n",
 931                                                attrib->value->t.string);
 932                                 break;
 933                         case IAS_OCT_SEQ:
 934                                 len += sprintf(buf+len, "octet sequence\n");
 935                                 break;
 936                         case IAS_MISSING:
 937                                 len += sprintf(buf+len, "missing\n");
 938                                 break;
 939                         default:
 940                                 IRDA_DEBUG(0, __FUNCTION__
 941                                       "(), Unknown value type!\n");
 942                                 return -1;
 943                         }
 944                         len += sprintf(buf+len, "\n");
 945
 946                         attrib = (struct ias_attrib *)
 947                                 hashbin_get_next(obj->attribs);
 948                 }
 949                 obj = (struct ias_object *) hashbin_get_next(objects);
 950         }
 951         restore_flags(flags);
 952
 953         return len;
 954 }
 955
 956 #endif /* PROC_FS */