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 Dec 25 16:42:42 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  *     Copyright (c) 2000-2003 Jean Tourrilhes <jt@hpl.hp.com>
  15  *
  16  *     This program is free software; you can redistribute it and/or
  17  *     modify it under the terms of the GNU General Public License as
  18  *     published by the Free Software Foundation; either version 2 of
  19  *     the License, or (at your option) any later version.
  20  *
  21  *     Neither Dag Brattli nor University of Tromsø admit liability nor
  22  *     provide warranty for any of this software. This material is
  23  *     provided "AS-IS" and at no charge.
  24  *
  25  ********************************************************************/
  26
  27 #include <linux/config.h>
  28 #include <linux/module.h>
  29 #include <linux/types.h>
  30 #include <linux/skbuff.h>
  31 #include <linux/string.h>
  32 #include <linux/init.h>
  33 #include <linux/seq_file.h>
  34
  35 #include <asm/byteorder.h>
  36 #include <asm/unaligned.h>
  37
  38 #include <net/irda/irda.h>
  39 #include <net/irda/irttp.h>
  40 #include <net/irda/irlmp.h>
  41 #include <net/irda/irias_object.h>
  42 #include <net/irda/iriap_event.h>
  43 #include <net/irda/iriap.h>
  44
  45 #ifdef CONFIG_IRDA_DEBUG
  46 /* FIXME: This one should go in irlmp.c */
  47 static const char *ias_charset_types[] = {
  48         "CS_ASCII",
  49         "CS_ISO_8859_1",
  50         "CS_ISO_8859_2",
  51         "CS_ISO_8859_3",
  52         "CS_ISO_8859_4",
  53         "CS_ISO_8859_5",
  54         "CS_ISO_8859_6",
  55         "CS_ISO_8859_7",
  56         "CS_ISO_8859_8",
  57         "CS_ISO_8859_9",
  58         "CS_UNICODE"
  59 };
  60 #endif  /* CONFIG_IRDA_DEBUG */
  61
  62 static hashbin_t *iriap = NULL;
  63 static void *service_handle;
  64
  65 static void __iriap_close(struct iriap_cb *self);
  66 static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode);
  67 static void iriap_disconnect_indication(void *instance, void *sap,
  68                                         LM_REASON reason, struct sk_buff *skb);
  69 static void iriap_connect_indication(void *instance, void *sap,
  70                                      struct qos_info *qos, __u32 max_sdu_size,
  71                                      __u8 max_header_size,
  72                                      struct sk_buff *skb);
  73 static void iriap_connect_confirm(void *instance, void *sap,
  74                                   struct qos_info *qos,
  75                                   __u32 max_sdu_size, __u8 max_header_size,
  76                                   struct sk_buff *skb);
  77 static int iriap_data_indication(void *instance, void *sap,
  78                                  struct sk_buff *skb);
  79
  80 /*
  81  * Function iriap_init (void)
  82  *
  83  *    Initializes the IrIAP layer, called by the module initialization code
  84  *    in irmod.c
  85  */
  86 int __init iriap_init(void)
  87 {
  88         struct ias_object *obj;
  89         struct iriap_cb *server;
  90         __u8 oct_seq[6];
  91         __u16 hints;
  92
  93         /* Allocate master array */
  94         iriap = hashbin_new(HB_LOCK);
  95         if (!iriap)
  96                 return -ENOMEM;
  97
  98         /* Object repository - defined in irias_object.c */
  99         irias_objects = hashbin_new(HB_LOCK);
 100         if (!irias_objects) {
 101                 WARNING("%s: Can't allocate irias_objects hashbin!\n",
 102                         __FUNCTION__);
 103                 hashbin_delete(iriap, NULL);
 104                 return -ENOMEM;
 105         }
 106
 107         /*
 108          *  Register some default services for IrLMP
 109          */
 110         hints  = irlmp_service_to_hint(S_COMPUTER);
 111         service_handle = irlmp_register_service(hints);
 112
 113         /* Register the Device object with LM-IAS */
 114         obj = irias_new_object("Device", IAS_DEVICE_ID);
 115         irias_add_string_attrib(obj, "DeviceName", "Linux", IAS_KERNEL_ATTR);
 116
 117         oct_seq[0] = 0x01;  /* Version 1 */
 118         oct_seq[1] = 0x00;  /* IAS support bits */
 119         oct_seq[2] = 0x00;  /* LM-MUX support bits */
 120 #ifdef CONFIG_IRDA_ULTRA
 121         oct_seq[2] |= 0x04; /* Connectionless Data support */
 122 #endif
 123         irias_add_octseq_attrib(obj, "IrLMPSupport", oct_seq, 3,
 124                                 IAS_KERNEL_ATTR);
 125         irias_insert_object(obj);
 126
 127         /*
 128          *  Register server support with IrLMP so we can accept incoming
 129          *  connections
 130          */
 131         server = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
 132         if (!server) {
 133                 IRDA_DEBUG(0, "%s(), unable to open server\n", __FUNCTION__);
 134                 return -1;
 135         }
 136         iriap_register_lsap(server, LSAP_IAS, IAS_SERVER);
 137
 138         return 0;
 139 }
 140
 141 /*
 142  * Function iriap_cleanup (void)
 143  *
 144  *    Initializes the IrIAP layer, called by the module cleanup code in
 145  *    irmod.c
 146  */
 147 void __exit iriap_cleanup(void)
 148 {
 149         irlmp_unregister_service(service_handle);
 150
 151         hashbin_delete(iriap, (FREE_FUNC) __iriap_close);
 152         hashbin_delete(irias_objects, (FREE_FUNC) __irias_delete_object);
 153 }
 154
 155 /*
 156  * Function iriap_open (void)
 157  *
 158  *    Opens an instance of the IrIAP layer, and registers with IrLMP
 159  */
 160 struct iriap_cb *iriap_open(__u8 slsap_sel, int mode, void *priv,
 161                             CONFIRM_CALLBACK callback)
 162 {
 163         struct iriap_cb *self;
 164
 165         IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
 166
 167         self = kmalloc(sizeof(struct iriap_cb), GFP_ATOMIC);
 168         if (!self) {
 169                 WARNING("%s: Unable to kmalloc!\n", __FUNCTION__);
 170                 return NULL;
 171         }
 172
 173         /*
 174          *  Initialize instance
 175          */
 176         memset(self, 0, sizeof(struct iriap_cb));
 177
 178         self->magic = IAS_MAGIC;
 179         self->mode = mode;
 180         if (mode == IAS_CLIENT)
 181                 iriap_register_lsap(self, slsap_sel, mode);
 182
 183         self->confirm = callback;
 184         self->priv = priv;
 185
 186         /* iriap_getvaluebyclass_request() will construct packets before
 187          * we connect, so this must have a sane value... Jean II */
 188         self->max_header_size = LMP_MAX_HEADER;
 189
 190         init_timer(&self->watchdog_timer);
 191
 192         hashbin_insert(iriap, (irda_queue_t *) self, (long) self, NULL);
 193
 194         /* Initialize state machines */
 195         iriap_next_client_state(self, S_DISCONNECT);
 196         iriap_next_call_state(self, S_MAKE_CALL);
 197         iriap_next_server_state(self, R_DISCONNECT);
 198         iriap_next_r_connect_state(self, R_WAITING);
 199
 200         return self;
 201 }
 202 EXPORT_SYMBOL(iriap_open);
 203
 204 /*
 205  * Function __iriap_close (self)
 206  *
 207  *    Removes (deallocates) the IrIAP instance
 208  *
 209  */
 210 static void __iriap_close(struct iriap_cb *self)
 211 {
 212         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
 213
 214         ASSERT(self != NULL, return;);
 215         ASSERT(self->magic == IAS_MAGIC, return;);
 216
 217         del_timer(&self->watchdog_timer);
 218
 219         if (self->request_skb)
 220                 dev_kfree_skb(self->request_skb);
 221
 222         self->magic = 0;
 223
 224         kfree(self);
 225 }
 226
 227 /*
 228  * Function iriap_close (void)
 229  *
 230  *    Closes IrIAP and deregisters with IrLMP
 231  */
 232 void iriap_close(struct iriap_cb *self)
 233 {
 234         struct iriap_cb *entry;
 235
 236         IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
 237
 238         ASSERT(self != NULL, return;);
 239         ASSERT(self->magic == IAS_MAGIC, return;);
 240
 241         if (self->lsap) {
 242                 irlmp_close_lsap(self->lsap);
 243                 self->lsap = NULL;
 244         }
 245
 246         entry = (struct iriap_cb *) hashbin_remove(iriap, (long) self, NULL);
 247         ASSERT(entry == self, return;);
 248
 249         __iriap_close(self);
 250 }
 251 EXPORT_SYMBOL(iriap_close);
 252
 253 static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode)
 254 {
 255         notify_t notify;
 256
 257         IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
 258
 259         irda_notify_init(&notify);
 260         notify.connect_confirm       = iriap_connect_confirm;
 261         notify.connect_indication    = iriap_connect_indication;
 262         notify.disconnect_indication = iriap_disconnect_indication;
 263         notify.data_indication       = iriap_data_indication;
 264         notify.instance = self;
 265         if (mode == IAS_CLIENT)
 266                 strcpy(notify.name, "IrIAS cli");
 267         else
 268                 strcpy(notify.name, "IrIAS srv");
 269
 270         self->lsap = irlmp_open_lsap(slsap_sel, &notify, 0);
 271         if (self->lsap == NULL) {
 272                 ERROR("%s: Unable to allocated LSAP!\n", __FUNCTION__);
 273                 return -1;
 274         }
 275         self->slsap_sel = self->lsap->slsap_sel;
 276
 277         return 0;
 278 }
 279
 280 /*
 281  * Function iriap_disconnect_indication (handle, reason)
 282  *
 283  *    Got disconnect, so clean up everything associated with this connection
 284  *
 285  */
 286 static void iriap_disconnect_indication(void *instance, void *sap,
 287                                         LM_REASON reason,
 288                                         struct sk_buff *skb)
 289 {
 290         struct iriap_cb *self;
 291
 292         IRDA_DEBUG(4, "%s(), reason=%s\n", __FUNCTION__, irlmp_reasons[reason]);
 293
 294         self = (struct iriap_cb *) instance;
 295
 296         ASSERT(self != NULL, return;);
 297         ASSERT(self->magic == IAS_MAGIC, return;);
 298
 299         ASSERT(iriap != NULL, return;);
 300
 301         del_timer(&self->watchdog_timer);
 302
 303         /* Not needed */
 304         if (skb)
 305                 dev_kfree_skb(skb);
 306
 307         if (self->mode == IAS_CLIENT) {
 308                 IRDA_DEBUG(4, "%s(), disconnect as client\n", __FUNCTION__);
 309
 310
 311                 iriap_do_client_event(self, IAP_LM_DISCONNECT_INDICATION,
 312                                       NULL);
 313                 /*
 314                  * Inform service user that the request failed by sending
 315                  * it a NULL value. Warning, the client might close us, so
 316                  * remember no to use self anymore after calling confirm
 317                  */
 318                 if (self->confirm)
 319                         self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
 320         } else {
 321                 IRDA_DEBUG(4, "%s(), disconnect as server\n", __FUNCTION__);
 322                 iriap_do_server_event(self, IAP_LM_DISCONNECT_INDICATION,
 323                                       NULL);
 324                 iriap_close(self);
 325         }
 326 }
 327
 328 /*
 329  * Function iriap_disconnect_request (handle)
 330  */
 331 void iriap_disconnect_request(struct iriap_cb *self)
 332 {
 333         struct sk_buff *tx_skb;
 334
 335         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
 336
 337         ASSERT(self != NULL, return;);
 338         ASSERT(self->magic == IAS_MAGIC, return;);
 339
 340         tx_skb = dev_alloc_skb(64);
 341         if (tx_skb == NULL) {
 342                 IRDA_DEBUG(0, "%s(), Could not allocate an sk_buff of length %d\n",
 343                         __FUNCTION__, 64);
 344                 return;
 345         }
 346
 347         /*
 348          *  Reserve space for MUX control and LAP header
 349          */
 350         skb_reserve(tx_skb, LMP_MAX_HEADER);
 351
 352         irlmp_disconnect_request(self->lsap, tx_skb);
 353 }
 354
 355 void iriap_getinfobasedetails_request(void)
 356 {
 357         IRDA_DEBUG(0, "%s(), Not implemented!\n", __FUNCTION__);
 358 }
 359
 360 void iriap_getinfobasedetails_confirm(void)
 361 {
 362         IRDA_DEBUG(0, "%s(), Not implemented!\n", __FUNCTION__);
 363 }
 364
 365 void iriap_getobjects_request(void)
 366 {
 367         IRDA_DEBUG(0, "%s(), Not implemented!\n", __FUNCTION__);
 368 }
 369
 370 void iriap_getobjects_confirm(void)
 371 {
 372         IRDA_DEBUG(0, "%s(), Not implemented!\n", __FUNCTION__);
 373 }
 374
 375 void iriap_getvalue(void)
 376 {
 377         IRDA_DEBUG(0, "%s(), Not implemented!\n", __FUNCTION__);
 378 }
 379
 380 /*
 381  * Function iriap_getvaluebyclass (addr, name, attr)
 382  *
 383  *    Retreive all values from attribute in all objects with given class
 384  *    name
 385  */
 386 int iriap_getvaluebyclass_request(struct iriap_cb *self,
 387                                   __u32 saddr, __u32 daddr,
 388                                   char *name, char *attr)
 389 {
 390         struct sk_buff *tx_skb;
 391         int name_len, attr_len, skb_len;
 392         __u8 *frame;
 393
 394         ASSERT(self != NULL, return -1;);
 395         ASSERT(self->magic == IAS_MAGIC, return -1;);
 396
 397         /* Client must supply the destination device address */
 398         if (!daddr)
 399                 return -1;
 400
 401         self->daddr = daddr;
 402         self->saddr = saddr;
 403
 404         /*
 405          *  Save operation, so we know what the later indication is about
 406          */
 407         self->operation = GET_VALUE_BY_CLASS;
 408
 409         /* Give ourselves 10 secs to finish this operation */
 410         iriap_start_watchdog_timer(self, 10*HZ);
 411
 412         name_len = strlen(name);        /* Up to IAS_MAX_CLASSNAME = 60 */
 413         attr_len = strlen(attr);        /* Up to IAS_MAX_ATTRIBNAME = 60 */
 414
 415         skb_len = self->max_header_size+2+name_len+1+attr_len+4;
 416         tx_skb = dev_alloc_skb(skb_len);
 417         if (!tx_skb)
 418                 return -ENOMEM;
 419
 420         /* Reserve space for MUX and LAP header */
 421         skb_reserve(tx_skb, self->max_header_size);
 422         skb_put(tx_skb, 3+name_len+attr_len);
 423         frame = tx_skb->data;
 424
 425         /* Build frame */
 426         frame[0] = IAP_LST | GET_VALUE_BY_CLASS;
 427         frame[1] = name_len;                       /* Insert length of name */
 428         memcpy(frame+2, name, name_len);           /* Insert name */
 429         frame[2+name_len] = attr_len;              /* Insert length of attr */
 430         memcpy(frame+3+name_len, attr, attr_len);  /* Insert attr */
 431
 432         iriap_do_client_event(self, IAP_CALL_REQUEST_GVBC, tx_skb);
 433
 434         /* Drop reference count - see state_s_disconnect(). */
 435         dev_kfree_skb(tx_skb);
 436
 437         return 0;
 438 }
 439 EXPORT_SYMBOL(iriap_getvaluebyclass_request);
 440
 441 /*
 442  * Function iriap_getvaluebyclass_confirm (self, skb)
 443  *
 444  *    Got result from GetValueByClass command. Parse it and return result
 445  *    to service user.
 446  *
 447  */
 448 void iriap_getvaluebyclass_confirm(struct iriap_cb *self, struct sk_buff *skb)
 449 {
 450         struct ias_value *value;
 451         int charset;
 452         __u32 value_len;
 453         __u32 tmp_cpu32;
 454         __u16 obj_id;
 455         __u16 len;
 456         __u8  type;
 457         __u8 *fp;
 458         int n;
 459
 460         ASSERT(self != NULL, return;);
 461         ASSERT(self->magic == IAS_MAGIC, return;);
 462         ASSERT(skb != NULL, return;);
 463
 464         /* Initialize variables */
 465         fp = skb->data;
 466         n = 2;
 467
 468         /* Get length, MSB first */
 469         len = be16_to_cpu(get_unaligned((__u16 *)(fp+n))); n += 2;
 470
 471         IRDA_DEBUG(4, "%s(), len=%d\n", __FUNCTION__, len);
 472
 473         /* Get object ID, MSB first */
 474         obj_id = be16_to_cpu(get_unaligned((__u16 *)(fp+n))); n += 2;
 475
 476         type = fp[n++];
 477         IRDA_DEBUG(4, "%s(), Value type = %d\n", __FUNCTION__, type);
 478
 479         switch (type) {
 480         case IAS_INTEGER:
 481                 memcpy(&tmp_cpu32, fp+n, 4); n += 4;
 482                 be32_to_cpus(&tmp_cpu32);
 483                 value = irias_new_integer_value(tmp_cpu32);
 484
 485                 /*  Legal values restricted to 0x01-0x6f, page 15 irttp */
 486                 IRDA_DEBUG(4, "%s(), lsap=%d\n", __FUNCTION__, value->t.integer);
 487                 break;
 488         case IAS_STRING:
 489                 charset = fp[n++];
 490
 491                 switch (charset) {
 492                 case CS_ASCII:
 493                         break;
 494 /*              case CS_ISO_8859_1: */
 495 /*              case CS_ISO_8859_2: */
 496 /*              case CS_ISO_8859_3: */
 497 /*              case CS_ISO_8859_4: */
 498 /*              case CS_ISO_8859_5: */
 499 /*              case CS_ISO_8859_6: */
 500 /*              case CS_ISO_8859_7: */
 501 /*              case CS_ISO_8859_8: */
 502 /*              case CS_ISO_8859_9: */
 503 /*              case CS_UNICODE: */
 504                 default:
 505                         IRDA_DEBUG(0, "%s(), charset %s, not supported\n",
 506                                    __FUNCTION__, ias_charset_types[charset]);
 507
 508                         /* Aborting, close connection! */
 509                         iriap_disconnect_request(self);
 510                         return;
 511                         /* break; */
 512                 }
 513                 value_len = fp[n++];
 514                 IRDA_DEBUG(4, "%s(), strlen=%d\n", __FUNCTION__, value_len);
 515
 516                 /* Make sure the string is null-terminated */
 517                 fp[n+value_len] = 0x00;
 518                 IRDA_DEBUG(4, "Got string %s\n", fp+n);
 519
 520                 /* Will truncate to IAS_MAX_STRING bytes */
 521                 value = irias_new_string_value(fp+n);
 522                 break;
 523         case IAS_OCT_SEQ:
 524                 value_len = be16_to_cpu(get_unaligned((__u16 *)(fp+n)));
 525                 n += 2;
 526
 527                 /* Will truncate to IAS_MAX_OCTET_STRING bytes */
 528                 value = irias_new_octseq_value(fp+n, value_len);
 529                 break;
 530         default:
 531                 value = irias_new_missing_value();
 532                 break;
 533         }
 534
 535         /* Finished, close connection! */
 536         iriap_disconnect_request(self);
 537
 538         /* Warning, the client might close us, so remember no to use self
 539          * anymore after calling confirm
 540          */
 541         if (self->confirm)
 542                 self->confirm(IAS_SUCCESS, obj_id, value, self->priv);
 543         else {
 544                 IRDA_DEBUG(0, "%s(), missing handler!\n", __FUNCTION__);
 545                 irias_delete_value(value);
 546         }
 547 }
 548
 549 /*
 550  * Function iriap_getvaluebyclass_response ()
 551  *
 552  *    Send answer back to remote LM-IAS
 553  *
 554  */
 555 void iriap_getvaluebyclass_response(struct iriap_cb *self, __u16 obj_id,
 556                                     __u8 ret_code, struct ias_value *value)
 557 {
 558         struct sk_buff *tx_skb;
 559         int n;
 560         __u32 tmp_be32, tmp_be16;
 561         __u8 *fp;
 562
 563         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
 564
 565         ASSERT(self != NULL, return;);
 566         ASSERT(self->magic == IAS_MAGIC, return;);
 567         ASSERT(value != NULL, return;);
 568         ASSERT(value->len <= 1024, return;);
 569
 570         /* Initialize variables */
 571         n = 0;
 572
 573         /*
 574          *  We must adjust the size of the response after the length of the
 575          *  value. We add 32 bytes because of the 6 bytes for the frame and
 576          *  max 5 bytes for the value coding.
 577          */
 578         tx_skb = dev_alloc_skb(value->len + self->max_header_size + 32);
 579         if (!tx_skb)
 580                 return;
 581
 582         /* Reserve space for MUX and LAP header */
 583         skb_reserve(tx_skb, self->max_header_size);
 584         skb_put(tx_skb, 6);
 585
 586         fp = tx_skb->data;
 587
 588         /* Build frame */
 589         fp[n++] = GET_VALUE_BY_CLASS | IAP_LST;
 590         fp[n++] = ret_code;
 591
 592         /* Insert list length (MSB first) */
 593         tmp_be16 = __constant_htons(0x0001);
 594         memcpy(fp+n, &tmp_be16, 2);  n += 2;
 595
 596         /* Insert object identifier ( MSB first) */
 597         tmp_be16 = cpu_to_be16(obj_id);
 598         memcpy(fp+n, &tmp_be16, 2); n += 2;
 599
 600         switch (value->type) {
 601         case IAS_STRING:
 602                 skb_put(tx_skb, 3 + value->len);
 603                 fp[n++] = value->type;
 604                 fp[n++] = 0; /* ASCII */
 605                 fp[n++] = (__u8) value->len;
 606                 memcpy(fp+n, value->t.string, value->len); n+=value->len;
 607                 break;
 608         case IAS_INTEGER:
 609                 skb_put(tx_skb, 5);
 610                 fp[n++] = value->type;
 611
 612                 tmp_be32 = cpu_to_be32(value->t.integer);
 613                 memcpy(fp+n, &tmp_be32, 4); n += 4;
 614                 break;
 615         case IAS_OCT_SEQ:
 616                 skb_put(tx_skb, 3 + value->len);
 617                 fp[n++] = value->type;
 618
 619                 tmp_be16 = cpu_to_be16(value->len);
 620                 memcpy(fp+n, &tmp_be16, 2); n += 2;
 621                 memcpy(fp+n, value->t.oct_seq, value->len); n+=value->len;
 622                 break;
 623         case IAS_MISSING:
 624                 IRDA_DEBUG( 3, "%s: sending IAS_MISSING\n", __FUNCTION__);
 625                 skb_put(tx_skb, 1);
 626                 fp[n++] = value->type;
 627                 break;
 628         default:
 629                 IRDA_DEBUG(0, "%s(), type not implemented!\n", __FUNCTION__);
 630                 break;
 631         }
 632         iriap_do_r_connect_event(self, IAP_CALL_RESPONSE, tx_skb);
 633
 634         /* Drop reference count - see state_r_execute(). */
 635         dev_kfree_skb(tx_skb);
 636 }
 637
 638 /*
 639  * Function iriap_getvaluebyclass_indication (self, skb)
 640  *
 641  *    getvaluebyclass is requested from peer LM-IAS
 642  *
 643  */
 644 void iriap_getvaluebyclass_indication(struct iriap_cb *self,
 645                                       struct sk_buff *skb)
 646 {
 647         struct ias_object *obj;
 648         struct ias_attrib *attrib;
 649         int name_len;
 650         int attr_len;
 651         char name[IAS_MAX_CLASSNAME + 1];       /* 60 bytes */
 652         char attr[IAS_MAX_ATTRIBNAME + 1];      /* 60 bytes */
 653         __u8 *fp;
 654         int n;
 655
 656         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
 657
 658         ASSERT(self != NULL, return;);
 659         ASSERT(self->magic == IAS_MAGIC, return;);
 660         ASSERT(skb != NULL, return;);
 661
 662         fp = skb->data;
 663         n = 1;
 664
 665         name_len = fp[n++];
 666         memcpy(name, fp+n, name_len); n+=name_len;
 667         name[name_len] = '\0';
 668
 669         attr_len = fp[n++];
 670         memcpy(attr, fp+n, attr_len); n+=attr_len;
 671         attr[attr_len] = '\0';
 672
 673         IRDA_DEBUG(4, "LM-IAS: Looking up %s: %s\n", name, attr);
 674         obj = irias_find_object(name);
 675
 676         if (obj == NULL) {
 677                 IRDA_DEBUG(2, "LM-IAS: Object %s not found\n", name);
 678                 iriap_getvaluebyclass_response(self, 0x1235, IAS_CLASS_UNKNOWN,
 679                                                &irias_missing);
 680                 return;
 681         }
 682         IRDA_DEBUG(4, "LM-IAS: found %s, id=%d\n", obj->name, obj->id);
 683
 684         attrib = irias_find_attrib(obj, attr);
 685         if (attrib == NULL) {
 686                 IRDA_DEBUG(2, "LM-IAS: Attribute %s not found\n", attr);
 687                 iriap_getvaluebyclass_response(self, obj->id,
 688                                                IAS_ATTRIB_UNKNOWN,
 689                                                &irias_missing);
 690                 return;
 691         }
 692
 693         /* We have a match; send the value.  */
 694         iriap_getvaluebyclass_response(self, obj->id, IAS_SUCCESS,
 695                                        attrib->value);
 696
 697         return;
 698 }
 699
 700 /*
 701  * Function iriap_send_ack (void)
 702  *
 703  *    Currently not used
 704  *
 705  */
 706 void iriap_send_ack(struct iriap_cb *self)
 707 {
 708         struct sk_buff *tx_skb;
 709         __u8 *frame;
 710
 711         IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
 712
 713         ASSERT(self != NULL, return;);
 714         ASSERT(self->magic == IAS_MAGIC, return;);
 715
 716         tx_skb = dev_alloc_skb(64);
 717         if (!tx_skb)
 718                 return;
 719
 720         /* Reserve space for MUX and LAP header */
 721         skb_reserve(tx_skb, self->max_header_size);
 722         skb_put(tx_skb, 1);
 723         frame = tx_skb->data;
 724
 725         /* Build frame */
 726         frame[0] = IAP_LST | IAP_ACK | self->operation;
 727
 728         irlmp_data_request(self->lsap, tx_skb);
 729 }
 730
 731 void iriap_connect_request(struct iriap_cb *self)
 732 {
 733         int ret;
 734
 735         ASSERT(self != NULL, return;);
 736         ASSERT(self->magic == IAS_MAGIC, return;);
 737
 738         ret = irlmp_connect_request(self->lsap, LSAP_IAS,
 739                                     self->saddr, self->daddr,
 740                                     NULL, NULL);
 741         if (ret < 0) {
 742                 IRDA_DEBUG(0, "%s(), connect failed!\n", __FUNCTION__);
 743                 self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
 744         }
 745 }
 746
 747 /*
 748  * Function iriap_connect_confirm (handle, skb)
 749  *
 750  *    LSAP connection confirmed!
 751  *
 752  */
 753 static void iriap_connect_confirm(void *instance, void *sap,
 754                                   struct qos_info *qos, __u32 max_seg_size,
 755                                   __u8 max_header_size,
 756                                   struct sk_buff *skb)
 757 {
 758         struct iriap_cb *self;
 759
 760         self = (struct iriap_cb *) instance;
 761
 762         ASSERT(self != NULL, return;);
 763         ASSERT(self->magic == IAS_MAGIC, return;);
 764         ASSERT(skb != NULL, return;);
 765
 766         self->max_data_size = max_seg_size;
 767         self->max_header_size = max_header_size;
 768
 769         del_timer(&self->watchdog_timer);
 770
 771         iriap_do_client_event(self, IAP_LM_CONNECT_CONFIRM, skb);
 772
 773         /* Drop reference count - see state_s_make_call(). */
 774         dev_kfree_skb(skb);
 775 }
 776
 777 /*
 778  * Function iriap_connect_indication ( handle, skb)
 779  *
 780  *    Remote LM-IAS is requesting connection
 781  *
 782  */
 783 static void iriap_connect_indication(void *instance, void *sap,
 784                                      struct qos_info *qos, __u32 max_seg_size,
 785                                      __u8 max_header_size,
 786                                      struct sk_buff *skb)
 787 {
 788         struct iriap_cb *self, *new;
 789
 790         IRDA_DEBUG(1, "%s()\n", __FUNCTION__);
 791
 792         self = (struct iriap_cb *) instance;
 793
 794         ASSERT(skb != NULL, return;);
 795         ASSERT(self != NULL, goto out;);
 796         ASSERT(self->magic == IAS_MAGIC, goto out;);
 797
 798         /* Start new server */
 799         new = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
 800         if (!new) {
 801                 IRDA_DEBUG(0, "%s(), open failed\n", __FUNCTION__);
 802                 goto out;
 803         }
 804
 805         /* Now attach up the new "socket" */
 806         new->lsap = irlmp_dup(self->lsap, new);
 807         if (!new->lsap) {
 808                 IRDA_DEBUG(0, "%s(), dup failed!\n", __FUNCTION__);
 809                 goto out;
 810         }
 811
 812         new->max_data_size = max_seg_size;
 813         new->max_header_size = max_header_size;
 814
 815         /* Clean up the original one to keep it in listen state */
 816         irlmp_listen(self->lsap);
 817
 818         iriap_do_server_event(new, IAP_LM_CONNECT_INDICATION, skb);
 819
 820 out:
 821         /* Drop reference count - see state_r_disconnect(). */
 822         dev_kfree_skb(skb);
 823 }
 824
 825 /*
 826  * Function iriap_data_indication (handle, skb)
 827  *
 828  *    Receives data from connection identified by handle from IrLMP
 829  *
 830  */
 831 static int iriap_data_indication(void *instance, void *sap,
 832                                  struct sk_buff *skb)
 833 {
 834         struct iriap_cb *self;
 835         __u8  *frame;
 836         __u8  opcode;
 837
 838         IRDA_DEBUG(3, "%s()\n", __FUNCTION__);
 839
 840         self = (struct iriap_cb *) instance;
 841
 842         ASSERT(skb != NULL, return 0;);
 843         ASSERT(self != NULL, goto out;);
 844         ASSERT(self->magic == IAS_MAGIC, goto out;);
 845
 846         frame = skb->data;
 847
 848         if (self->mode == IAS_SERVER) {
 849                 /* Call server */
 850                 IRDA_DEBUG(4, "%s(), Calling server!\n", __FUNCTION__);
 851                 iriap_do_r_connect_event(self, IAP_RECV_F_LST, skb);
 852                 goto out;
 853         }
 854         opcode = frame[0];
 855         if (~opcode & IAP_LST) {
 856                 WARNING("%s:, IrIAS multiframe commands or "
 857                         "results is not implemented yet!\n", __FUNCTION__);
 858                 goto out;
 859         }
 860
 861         /* Check for ack frames since they don't contain any data */
 862         if (opcode & IAP_ACK) {
 863                 IRDA_DEBUG(0, "%s() Got ack frame!\n", __FUNCTION__);
 864                 goto out;
 865         }
 866
 867         opcode &= ~IAP_LST; /* Mask away LST bit */
 868
 869         switch (opcode) {
 870         case GET_INFO_BASE:
 871                 IRDA_DEBUG(0, "IrLMP GetInfoBaseDetails not implemented!\n");
 872                 break;
 873         case GET_VALUE_BY_CLASS:
 874                 iriap_do_call_event(self, IAP_RECV_F_LST, NULL);
 875
 876                 switch (frame[1]) {
 877                 case IAS_SUCCESS:
 878                         iriap_getvaluebyclass_confirm(self, skb);
 879                         break;
 880                 case IAS_CLASS_UNKNOWN:
 881                         IRDA_DEBUG(1, "%s(), No such class!\n", __FUNCTION__);
 882                         /* Finished, close connection! */
 883                         iriap_disconnect_request(self);
 884
 885                         /*
 886                          * Warning, the client might close us, so remember
 887                          * no to use self anymore after calling confirm
 888                          */
 889                         if (self->confirm)
 890                                 self->confirm(IAS_CLASS_UNKNOWN, 0, NULL,
 891                                               self->priv);
 892                         break;
 893                 case IAS_ATTRIB_UNKNOWN:
 894                         IRDA_DEBUG(1, "%s(), No such attribute!\n", __FUNCTION__);
 895                         /* Finished, close connection! */
 896                         iriap_disconnect_request(self);
 897
 898                         /*
 899                          * Warning, the client might close us, so remember
 900                          * no to use self anymore after calling confirm
 901                          */
 902                         if (self->confirm)
 903                                 self->confirm(IAS_ATTRIB_UNKNOWN, 0, NULL,
 904                                               self->priv);
 905                         break;
 906                 }
 907                 break;
 908         default:
 909                 IRDA_DEBUG(0, "%s(), Unknown op-code: %02x\n", __FUNCTION__,
 910                            opcode);
 911                 break;
 912         }
 913
 914 out:
 915         /* Cleanup - sub-calls will have done skb_get() as needed. */
 916         dev_kfree_skb(skb);
 917         return 0;
 918 }
 919
 920 /*
 921  * Function iriap_call_indication (self, skb)
 922  *
 923  *    Received call to server from peer LM-IAS
 924  *
 925  */
 926 void iriap_call_indication(struct iriap_cb *self, struct sk_buff *skb)
 927 {
 928         __u8 *fp;
 929         __u8 opcode;
 930
 931         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
 932
 933         ASSERT(self != NULL, return;);
 934         ASSERT(self->magic == IAS_MAGIC, return;);
 935         ASSERT(skb != NULL, return;);
 936
 937         fp = skb->data;
 938
 939         opcode = fp[0];
 940         if (~opcode & 0x80) {
 941                 WARNING("%s: IrIAS multiframe commands or results"
 942                         "is not implemented yet!\n", __FUNCTION__);
 943                 return;
 944         }
 945         opcode &= 0x7f; /* Mask away LST bit */
 946
 947         switch (opcode) {
 948         case GET_INFO_BASE:
 949                 WARNING("%s: GetInfoBaseDetails not implemented yet!\n",
 950                                 __FUNCTION__);
 951                 break;
 952         case GET_VALUE_BY_CLASS:
 953                 iriap_getvaluebyclass_indication(self, skb);
 954                 break;
 955         }
 956         /* skb will be cleaned up in iriap_data_indication */
 957 }
 958
 959 /*
 960  * Function iriap_watchdog_timer_expired (data)
 961  *
 962  *    Query has taken too long time, so abort
 963  *
 964  */
 965 void iriap_watchdog_timer_expired(void *data)
 966 {
 967         struct iriap_cb *self = (struct iriap_cb *) data;
 968
 969         ASSERT(self != NULL, return;);
 970         ASSERT(self->magic == IAS_MAGIC, return;);
 971
 972         /* iriap_close(self); */
 973 }
 974
 975 #ifdef CONFIG_PROC_FS
 976
 977 static const char *ias_value_types[] = {
 978         "IAS_MISSING",
 979         "IAS_INTEGER",
 980         "IAS_OCT_SEQ",
 981         "IAS_STRING"
 982 };
 983
 984 static inline struct ias_object *irias_seq_idx(loff_t pos)
 985 {
 986         struct ias_object *obj;
 987
 988         for (obj = (struct ias_object *) hashbin_get_first(irias_objects);
 989              obj; obj = (struct ias_object *) hashbin_get_next(irias_objects)) {
 990                 if (pos-- == 0)
 991                         break;
 992         }
 993
 994         return obj;
 995 }
 996
 997 static void *irias_seq_start(struct seq_file *seq, loff_t *pos)
 998 {
 999         spin_lock_irq(&irias_objects->hb_spinlock);
1000
1001         return *pos ? irias_seq_idx(*pos - 1) : SEQ_START_TOKEN;
1002 }
1003
1004 static void *irias_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1005 {
1006         ++*pos;
1007
1008         return (v == SEQ_START_TOKEN)
1009                 ? (void *) hashbin_get_first(irias_objects)
1010                 : (void *) hashbin_get_next(irias_objects);
1011 }
1012
1013 static void irias_seq_stop(struct seq_file *seq, void *v)
1014 {
1015         spin_unlock_irq(&irias_objects->hb_spinlock);
1016 }
1017
1018 static int irias_seq_show(struct seq_file *seq, void *v)
1019 {
1020         if (v == SEQ_START_TOKEN)
1021                 seq_puts(seq, "LM-IAS Objects:\n");
1022         else {
1023                 struct ias_object *obj = v;
1024                 struct ias_attrib *attrib;
1025
1026                 ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -EINVAL;);
1027
1028                 seq_printf(seq, "name: %s, id=%d\n",
1029                            obj->name, obj->id);
1030
1031                 /* Careful for priority inversions here !
1032                  * All other uses of attrib spinlock are independent of
1033                  * the object spinlock, so we are safe. Jean II */
1034                 spin_lock(&obj->attribs->hb_spinlock);
1035
1036                 /* List all attributes for this object */
1037                 for (attrib = (struct ias_attrib *) hashbin_get_first(obj->attribs);
1038                      attrib != NULL;
1039                      attrib = (struct ias_attrib *) hashbin_get_next(obj->attribs)) {
1040
1041                         ASSERT(attrib->magic == IAS_ATTRIB_MAGIC, break; );
1042
1043                         seq_printf(seq, " - Attribute name: \"%s\", ",
1044                                    attrib->name);
1045                         seq_printf(seq, "value[%s]: ",
1046                                    ias_value_types[attrib->value->type]);
1047
1048                         switch (attrib->value->type) {
1049                         case IAS_INTEGER:
1050                                 seq_printf(seq, "%d\n",
1051                                            attrib->value->t.integer);
1052                                 break;
1053                         case IAS_STRING:
1054                                 seq_printf(seq, "\"%s\"\n",
1055                                            attrib->value->t.string);
1056                                 break;
1057                         case IAS_OCT_SEQ:
1058                                 seq_printf(seq, "octet sequence (%d bytes)\n",
1059                                            attrib->value->len);
1060                                 break;
1061                         case IAS_MISSING:
1062                                 seq_puts(seq, "missing\n");
1063                                 break;
1064                         default:
1065                                 seq_printf(seq, "type %d?\n",
1066                                            attrib->value->type);
1067                         }
1068                         seq_putc(seq, '\n');
1069
1070                 }
1071                 spin_unlock(&obj->attribs->hb_spinlock);
1072         }
1073
1074         return 0;
1075 }
1076
1077 static struct seq_operations irias_seq_ops = {
1078         .start  = irias_seq_start,
1079         .next   = irias_seq_next,
1080         .stop   = irias_seq_stop,
1081         .show   = irias_seq_show,
1082 };
1083
1084 static int irias_seq_open(struct inode *inode, struct file *file)
1085 {
1086         ASSERT( irias_objects != NULL, return -EINVAL;);
1087
1088         return seq_open(file, &irias_seq_ops);
1089 }
1090
1091 struct file_operations irias_seq_fops = {
1092         .owner          = THIS_MODULE,
1093         .open           = irias_seq_open,
1094         .read           = seq_read,
1095         .llseek         = seq_lseek,
1096         .release        = seq_release_private,
1097 };
1098
1099 #endif /* PROC_FS */