net/irda/af_irda.c

   1 /*********************************************************************
   2  *
   3  * Filename:      af_irda.c
   4  * Version:       0.9
   5  * Description:   IrDA sockets implementation
   6  * Status:        Stable
   7  * Author:        Dag Brattli <dagb@cs.uit.no>
   8  * Created at:    Sun May 31 10:12:43 1998
   9  * Modified at:   Sat Dec 25 21:10:23 1999
  10  * Modified by:   Dag Brattli <dag@brattli.net>
  11  * Sources:       af_netroom.c, af_ax25.c, af_rose.c, af_x25.c etc.
  12  *
  13  *     Copyright (c) 1999 Dag Brattli <dagb@cs.uit.no>
  14  *     Copyright (c) 1999-2003 Jean Tourrilhes <jt@hpl.hp.com>
  15  *     All Rights Reserved.
  16  *
  17  *     This program is free software; you can redistribute it and/or
  18  *     modify it under the terms of the GNU General Public License as
  19  *     published by the Free Software Foundation; either version 2 of
  20  *     the License, or (at your option) any later version.
  21  *
  22  *     This program is distributed in the hope that it will be useful,
  23  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  25  *     GNU General Public License for more details.
  26  *
  27  *     You should have received a copy of the GNU General Public License
  28  *     along with this program; if not, write to the Free Software
  29  *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  30  *     MA 02111-1307 USA
  31  *
  32  *     Linux-IrDA now supports four different types of IrDA sockets:
  33  *
  34  *     o SOCK_STREAM:    TinyTP connections with SAR disabled. The
  35  *                       max SDU size is 0 for conn. of this type
  36  *     o SOCK_SEQPACKET: TinyTP connections with SAR enabled. TTP may
  37  *                       fragment the messages, but will preserve
  38  *                       the message boundaries
  39  *     o SOCK_DGRAM:     IRDAPROTO_UNITDATA: TinyTP connections with Unitdata
  40  *                       (unreliable) transfers
  41  *                       IRDAPROTO_ULTRA: Connectionless and unreliable data
  42  *
  43  ********************************************************************/
  44
  45 #include <linux/capability.h>
  46 #include <linux/module.h>
  47 #include <linux/types.h>
  48 #include <linux/smp_lock.h>
  49 #include <linux/socket.h>
  50 #include <linux/sockios.h>
  51 #include <linux/init.h>
  52 #include <linux/net.h>
  53 #include <linux/irda.h>
  54 #include <linux/poll.h>
  55
  56 #include <asm/ioctls.h>         /* TIOCOUTQ, TIOCINQ */
  57 #include <asm/uaccess.h>
  58
  59 #include <net/sock.h>
  60 #include <net/tcp_states.h>
  61
  62 #include <net/irda/af_irda.h>
  63
  64 static int irda_create(struct net *net, struct socket *sock, int protocol, int kern);
  65
  66 static const struct proto_ops irda_stream_ops;
  67 static const struct proto_ops irda_seqpacket_ops;
  68 static const struct proto_ops irda_dgram_ops;
  69
  70 #ifdef CONFIG_IRDA_ULTRA
  71 static const struct proto_ops irda_ultra_ops;
  72 #define ULTRA_MAX_DATA 382
  73 #endif /* CONFIG_IRDA_ULTRA */
  74
  75 #define IRDA_MAX_HEADER (TTP_MAX_HEADER)
  76
  77 /*
  78  * Function irda_data_indication (instance, sap, skb)
  79  *
  80  *    Received some data from TinyTP. Just queue it on the receive queue
  81  *
  82  */
  83 static int irda_data_indication(void *instance, void *sap, struct sk_buff *skb)
  84 {
  85         struct irda_sock *self;
  86         struct sock *sk;
  87         int err;
  88
  89         IRDA_DEBUG(3, "%s()\n", __func__);
  90
  91         self = instance;
  92         sk = instance;
  93
  94         err = sock_queue_rcv_skb(sk, skb);
  95         if (err) {
  96                 IRDA_DEBUG(1, "%s(), error: no more mem!\n", __func__);
  97                 self->rx_flow = FLOW_STOP;
  98
  99                 /* When we return error, TTP will need to requeue the skb */
 100                 return err;
 101         }
 102
 103         return 0;
 104 }
 105
 106 /*
 107  * Function irda_disconnect_indication (instance, sap, reason, skb)
 108  *
 109  *    Connection has been closed. Check reason to find out why
 110  *
 111  */
 112 static void irda_disconnect_indication(void *instance, void *sap,
 113                                        LM_REASON reason, struct sk_buff *skb)
 114 {
 115         struct irda_sock *self;
 116         struct sock *sk;
 117
 118         self = instance;
 119
 120         IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
 121
 122         /* Don't care about it, but let's not leak it */
 123         if(skb)
 124                 dev_kfree_skb(skb);
 125
 126         sk = instance;
 127         if (sk == NULL) {
 128                 IRDA_DEBUG(0, "%s(%p) : BUG : sk is NULL\n",
 129                            __func__, self);
 130                 return;
 131         }
 132
 133         /* Prevent race conditions with irda_release() and irda_shutdown() */
 134         bh_lock_sock(sk);
 135         if (!sock_flag(sk, SOCK_DEAD) && sk->sk_state != TCP_CLOSE) {
 136                 sk->sk_state     = TCP_CLOSE;
 137                 sk->sk_shutdown |= SEND_SHUTDOWN;
 138
 139                 sk->sk_state_change(sk);
 140
 141                 /* Close our TSAP.
 142                  * If we leave it open, IrLMP put it back into the list of
 143                  * unconnected LSAPs. The problem is that any incoming request
 144                  * can then be matched to this socket (and it will be, because
 145                  * it is at the head of the list). This would prevent any
 146                  * listening socket waiting on the same TSAP to get those
 147                  * requests. Some apps forget to close sockets, or hang to it
 148                  * a bit too long, so we may stay in this dead state long
 149                  * enough to be noticed...
 150                  * Note : all socket function do check sk->sk_state, so we are
 151                  * safe...
 152                  * Jean II
 153                  */
 154                 if (self->tsap) {
 155                         irttp_close_tsap(self->tsap);
 156                         self->tsap = NULL;
 157                 }
 158         }
 159         bh_unlock_sock(sk);
 160
 161         /* Note : once we are there, there is not much you want to do
 162          * with the socket anymore, apart from closing it.
 163          * For example, bind() and connect() won't reset sk->sk_err,
 164          * sk->sk_shutdown and sk->sk_flags to valid values...
 165          * Jean II
 166          */
 167 }
 168
 169 /*
 170  * Function irda_connect_confirm (instance, sap, qos, max_sdu_size, skb)
 171  *
 172  *    Connections has been confirmed by the remote device
 173  *
 174  */
 175 static void irda_connect_confirm(void *instance, void *sap,
 176                                  struct qos_info *qos,
 177                                  __u32 max_sdu_size, __u8 max_header_size,
 178                                  struct sk_buff *skb)
 179 {
 180         struct irda_sock *self;
 181         struct sock *sk;
 182
 183         self = instance;
 184
 185         IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
 186
 187         sk = instance;
 188         if (sk == NULL) {
 189                 dev_kfree_skb(skb);
 190                 return;
 191         }
 192
 193         dev_kfree_skb(skb);
 194         // Should be ??? skb_queue_tail(&sk->sk_receive_queue, skb);
 195
 196         /* How much header space do we need to reserve */
 197         self->max_header_size = max_header_size;
 198
 199         /* IrTTP max SDU size in transmit direction */
 200         self->max_sdu_size_tx = max_sdu_size;
 201
 202         /* Find out what the largest chunk of data that we can transmit is */
 203         switch (sk->sk_type) {
 204         case SOCK_STREAM:
 205                 if (max_sdu_size != 0) {
 206                         IRDA_ERROR("%s: max_sdu_size must be 0\n",
 207                                    __func__);
 208                         return;
 209                 }
 210                 self->max_data_size = irttp_get_max_seg_size(self->tsap);
 211                 break;
 212         case SOCK_SEQPACKET:
 213                 if (max_sdu_size == 0) {
 214                         IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
 215                                    __func__);
 216                         return;
 217                 }
 218                 self->max_data_size = max_sdu_size;
 219                 break;
 220         default:
 221                 self->max_data_size = irttp_get_max_seg_size(self->tsap);
 222         }
 223
 224         IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__,
 225                    self->max_data_size);
 226
 227         memcpy(&self->qos_tx, qos, sizeof(struct qos_info));
 228
 229         /* We are now connected! */
 230         sk->sk_state = TCP_ESTABLISHED;
 231         sk->sk_state_change(sk);
 232 }
 233
 234 /*
 235  * Function irda_connect_indication(instance, sap, qos, max_sdu_size, userdata)
 236  *
 237  *    Incoming connection
 238  *
 239  */
 240 static void irda_connect_indication(void *instance, void *sap,
 241                                     struct qos_info *qos, __u32 max_sdu_size,
 242                                     __u8 max_header_size, struct sk_buff *skb)
 243 {
 244         struct irda_sock *self;
 245         struct sock *sk;
 246
 247         self = instance;
 248
 249         IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
 250
 251         sk = instance;
 252         if (sk == NULL) {
 253                 dev_kfree_skb(skb);
 254                 return;
 255         }
 256
 257         /* How much header space do we need to reserve */
 258         self->max_header_size = max_header_size;
 259
 260         /* IrTTP max SDU size in transmit direction */
 261         self->max_sdu_size_tx = max_sdu_size;
 262
 263         /* Find out what the largest chunk of data that we can transmit is */
 264         switch (sk->sk_type) {
 265         case SOCK_STREAM:
 266                 if (max_sdu_size != 0) {
 267                         IRDA_ERROR("%s: max_sdu_size must be 0\n",
 268                                    __func__);
 269                         kfree_skb(skb);
 270                         return;
 271                 }
 272                 self->max_data_size = irttp_get_max_seg_size(self->tsap);
 273                 break;
 274         case SOCK_SEQPACKET:
 275                 if (max_sdu_size == 0) {
 276                         IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
 277                                    __func__);
 278                         kfree_skb(skb);
 279                         return;
 280                 }
 281                 self->max_data_size = max_sdu_size;
 282                 break;
 283         default:
 284                 self->max_data_size = irttp_get_max_seg_size(self->tsap);
 285         }
 286
 287         IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__,
 288                    self->max_data_size);
 289
 290         memcpy(&self->qos_tx, qos, sizeof(struct qos_info));
 291
 292         skb_queue_tail(&sk->sk_receive_queue, skb);
 293         sk->sk_state_change(sk);
 294 }
 295
 296 /*
 297  * Function irda_connect_response (handle)
 298  *
 299  *    Accept incoming connection
 300  *
 301  */
 302 static void irda_connect_response(struct irda_sock *self)
 303 {
 304         struct sk_buff *skb;
 305
 306         IRDA_DEBUG(2, "%s()\n", __func__);
 307
 308         skb = alloc_skb(TTP_MAX_HEADER + TTP_SAR_HEADER,
 309                         GFP_ATOMIC);
 310         if (skb == NULL) {
 311                 IRDA_DEBUG(0, "%s() Unable to allocate sk_buff!\n",
 312                            __func__);
 313                 return;
 314         }
 315
 316         /* Reserve space for MUX_CONTROL and LAP header */
 317         skb_reserve(skb, IRDA_MAX_HEADER);
 318
 319         irttp_connect_response(self->tsap, self->max_sdu_size_rx, skb);
 320 }
 321
 322 /*
 323  * Function irda_flow_indication (instance, sap, flow)
 324  *
 325  *    Used by TinyTP to tell us if it can accept more data or not
 326  *
 327  */
 328 static void irda_flow_indication(void *instance, void *sap, LOCAL_FLOW flow)
 329 {
 330         struct irda_sock *self;
 331         struct sock *sk;
 332
 333         IRDA_DEBUG(2, "%s()\n", __func__);
 334
 335         self = instance;
 336         sk = instance;
 337         BUG_ON(sk == NULL);
 338
 339         switch (flow) {
 340         case FLOW_STOP:
 341                 IRDA_DEBUG(1, "%s(), IrTTP wants us to slow down\n",
 342                            __func__);
 343                 self->tx_flow = flow;
 344                 break;
 345         case FLOW_START:
 346                 self->tx_flow = flow;
 347                 IRDA_DEBUG(1, "%s(), IrTTP wants us to start again\n",
 348                            __func__);
 349                 wake_up_interruptible(sk->sk_sleep);
 350                 break;
 351         default:
 352                 IRDA_DEBUG(0, "%s(), Unknown flow command!\n", __func__);
 353                 /* Unknown flow command, better stop */
 354                 self->tx_flow = flow;
 355                 break;
 356         }
 357 }
 358
 359 /*
 360  * Function irda_getvalue_confirm (obj_id, value, priv)
 361  *
 362  *    Got answer from remote LM-IAS, just pass object to requester...
 363  *
 364  * Note : duplicate from above, but we need our own version that
 365  * doesn't touch the dtsap_sel and save the full value structure...
 366  */
 367 static void irda_getvalue_confirm(int result, __u16 obj_id,
 368                                   struct ias_value *value, void *priv)
 369 {
 370         struct irda_sock *self;
 371
 372         self = (struct irda_sock *) priv;
 373         if (!self) {
 374                 IRDA_WARNING("%s: lost myself!\n", __func__);
 375                 return;
 376         }
 377
 378         IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
 379
 380         /* We probably don't need to make any more queries */
 381         iriap_close(self->iriap);
 382         self->iriap = NULL;
 383
 384         /* Check if request succeeded */
 385         if (result != IAS_SUCCESS) {
 386                 IRDA_DEBUG(1, "%s(), IAS query failed! (%d)\n", __func__,
 387                            result);
 388
 389                 self->errno = result;   /* We really need it later */
 390
 391                 /* Wake up any processes waiting for result */
 392                 wake_up_interruptible(&self->query_wait);
 393
 394                 return;
 395         }
 396
 397         /* Pass the object to the caller (so the caller must delete it) */
 398         self->ias_result = value;
 399         self->errno = 0;
 400
 401         /* Wake up any processes waiting for result */
 402         wake_up_interruptible(&self->query_wait);
 403 }
 404
 405 /*
 406  * Function irda_selective_discovery_indication (discovery)
 407  *
 408  *    Got a selective discovery indication from IrLMP.
 409  *
 410  * IrLMP is telling us that this node is new and matching our hint bit
 411  * filter. Wake up any process waiting for answer...
 412  */
 413 static void irda_selective_discovery_indication(discinfo_t *discovery,
 414                                                 DISCOVERY_MODE mode,
 415                                                 void *priv)
 416 {
 417         struct irda_sock *self;
 418
 419         IRDA_DEBUG(2, "%s()\n", __func__);
 420
 421         self = (struct irda_sock *) priv;
 422         if (!self) {
 423                 IRDA_WARNING("%s: lost myself!\n", __func__);
 424                 return;
 425         }
 426
 427         /* Pass parameter to the caller */
 428         self->cachedaddr = discovery->daddr;
 429
 430         /* Wake up process if its waiting for device to be discovered */
 431         wake_up_interruptible(&self->query_wait);
 432 }
 433
 434 /*
 435  * Function irda_discovery_timeout (priv)
 436  *
 437  *    Timeout in the selective discovery process
 438  *
 439  * We were waiting for a node to be discovered, but nothing has come up
 440  * so far. Wake up the user and tell him that we failed...
 441  */
 442 static void irda_discovery_timeout(u_long priv)
 443 {
 444         struct irda_sock *self;
 445
 446         IRDA_DEBUG(2, "%s()\n", __func__);
 447
 448         self = (struct irda_sock *) priv;
 449         BUG_ON(self == NULL);
 450
 451         /* Nothing for the caller */
 452         self->cachelog = NULL;
 453         self->cachedaddr = 0;
 454         self->errno = -ETIME;
 455
 456         /* Wake up process if its still waiting... */
 457         wake_up_interruptible(&self->query_wait);
 458 }
 459
 460 /*
 461  * Function irda_open_tsap (self)
 462  *
 463  *    Open local Transport Service Access Point (TSAP)
 464  *
 465  */
 466 static int irda_open_tsap(struct irda_sock *self, __u8 tsap_sel, char *name)
 467 {
 468         notify_t notify;
 469
 470         if (self->tsap) {
 471                 IRDA_WARNING("%s: busy!\n", __func__);
 472                 return -EBUSY;
 473         }
 474
 475         /* Initialize callbacks to be used by the IrDA stack */
 476         irda_notify_init(&notify);
 477         notify.connect_confirm       = irda_connect_confirm;
 478         notify.connect_indication    = irda_connect_indication;
 479         notify.disconnect_indication = irda_disconnect_indication;
 480         notify.data_indication       = irda_data_indication;
 481         notify.udata_indication      = irda_data_indication;
 482         notify.flow_indication       = irda_flow_indication;
 483         notify.instance = self;
 484         strncpy(notify.name, name, NOTIFY_MAX_NAME);
 485
 486         self->tsap = irttp_open_tsap(tsap_sel, DEFAULT_INITIAL_CREDIT,
 487                                      &notify);
 488         if (self->tsap == NULL) {
 489                 IRDA_DEBUG(0, "%s(), Unable to allocate TSAP!\n",
 490                            __func__);
 491                 return -ENOMEM;
 492         }
 493         /* Remember which TSAP selector we actually got */
 494         self->stsap_sel = self->tsap->stsap_sel;
 495
 496         return 0;
 497 }
 498
 499 /*
 500  * Function irda_open_lsap (self)
 501  *
 502  *    Open local Link Service Access Point (LSAP). Used for opening Ultra
 503  *    sockets
 504  */
 505 #ifdef CONFIG_IRDA_ULTRA
 506 static int irda_open_lsap(struct irda_sock *self, int pid)
 507 {
 508         notify_t notify;
 509
 510         if (self->lsap) {
 511                 IRDA_WARNING("%s(), busy!\n", __func__);
 512                 return -EBUSY;
 513         }
 514
 515         /* Initialize callbacks to be used by the IrDA stack */
 516         irda_notify_init(&notify);
 517         notify.udata_indication = irda_data_indication;
 518         notify.instance = self;
 519         strncpy(notify.name, "Ultra", NOTIFY_MAX_NAME);
 520
 521         self->lsap = irlmp_open_lsap(LSAP_CONNLESS, &notify, pid);
 522         if (self->lsap == NULL) {
 523                 IRDA_DEBUG( 0, "%s(), Unable to allocate LSAP!\n", __func__);
 524                 return -ENOMEM;
 525         }
 526
 527         return 0;
 528 }
 529 #endif /* CONFIG_IRDA_ULTRA */
 530
 531 /*
 532  * Function irda_find_lsap_sel (self, name)
 533  *
 534  *    Try to lookup LSAP selector in remote LM-IAS
 535  *
 536  * Basically, we start a IAP query, and then go to sleep. When the query
 537  * return, irda_getvalue_confirm will wake us up, and we can examine the
 538  * result of the query...
 539  * Note that in some case, the query fail even before we go to sleep,
 540  * creating some races...
 541  */
 542 static int irda_find_lsap_sel(struct irda_sock *self, char *name)
 543 {
 544         IRDA_DEBUG(2, "%s(%p, %s)\n", __func__, self, name);
 545
 546         if (self->iriap) {
 547                 IRDA_WARNING("%s(): busy with a previous query\n",
 548                              __func__);
 549                 return -EBUSY;
 550         }
 551
 552         self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self,
 553                                  irda_getvalue_confirm);
 554         if(self->iriap == NULL)
 555                 return -ENOMEM;
 556
 557         /* Treat unexpected wakeup as disconnect */
 558         self->errno = -EHOSTUNREACH;
 559
 560         /* Query remote LM-IAS */
 561         iriap_getvaluebyclass_request(self->iriap, self->saddr, self->daddr,
 562                                       name, "IrDA:TinyTP:LsapSel");
 563
 564         /* Wait for answer, if not yet finished (or failed) */
 565         if (wait_event_interruptible(self->query_wait, (self->iriap==NULL)))
 566                 /* Treat signals as disconnect */
 567                 return -EHOSTUNREACH;
 568
 569         /* Check what happened */
 570         if (self->errno)
 571         {
 572                 /* Requested object/attribute doesn't exist */
 573                 if((self->errno == IAS_CLASS_UNKNOWN) ||
 574                    (self->errno == IAS_ATTRIB_UNKNOWN))
 575                         return (-EADDRNOTAVAIL);
 576                 else
 577                         return (-EHOSTUNREACH);
 578         }
 579
 580         /* Get the remote TSAP selector */
 581         switch (self->ias_result->type) {
 582         case IAS_INTEGER:
 583                 IRDA_DEBUG(4, "%s() int=%d\n",
 584                            __func__, self->ias_result->t.integer);
 585
 586                 if (self->ias_result->t.integer != -1)
 587                         self->dtsap_sel = self->ias_result->t.integer;
 588                 else
 589                         self->dtsap_sel = 0;
 590                 break;
 591         default:
 592                 self->dtsap_sel = 0;
 593                 IRDA_DEBUG(0, "%s(), bad type!\n", __func__);
 594                 break;
 595         }
 596         if (self->ias_result)
 597                 irias_delete_value(self->ias_result);
 598
 599         if (self->dtsap_sel)
 600                 return 0;
 601
 602         return -EADDRNOTAVAIL;
 603 }
 604
 605 /*
 606  * Function irda_discover_daddr_and_lsap_sel (self, name)
 607  *
 608  *    This try to find a device with the requested service.
 609  *
 610  * It basically look into the discovery log. For each address in the list,
 611  * it queries the LM-IAS of the device to find if this device offer
 612  * the requested service.
 613  * If there is more than one node supporting the service, we complain
 614  * to the user (it should move devices around).
 615  * The, we set both the destination address and the lsap selector to point
 616  * on the service on the unique device we have found.
 617  *
 618  * Note : this function fails if there is more than one device in range,
 619  * because IrLMP doesn't disconnect the LAP when the last LSAP is closed.
 620  * Moreover, we would need to wait the LAP disconnection...
 621  */
 622 static int irda_discover_daddr_and_lsap_sel(struct irda_sock *self, char *name)
 623 {
 624         discinfo_t *discoveries;        /* Copy of the discovery log */
 625         int     number;                 /* Number of nodes in the log */
 626         int     i;
 627         int     err = -ENETUNREACH;
 628         __u32   daddr = DEV_ADDR_ANY;   /* Address we found the service on */
 629         __u8    dtsap_sel = 0x0;        /* TSAP associated with it */
 630
 631         IRDA_DEBUG(2, "%s(), name=%s\n", __func__, name);
 632
 633         /* Ask lmp for the current discovery log
 634          * Note : we have to use irlmp_get_discoveries(), as opposed
 635          * to play with the cachelog directly, because while we are
 636          * making our ias query, le log might change... */
 637         discoveries = irlmp_get_discoveries(&number, self->mask.word,
 638                                             self->nslots);
 639         /* Check if the we got some results */
 640         if (discoveries == NULL)
 641                 return -ENETUNREACH;    /* No nodes discovered */
 642
 643         /*
 644          * Now, check all discovered devices (if any), and connect
 645          * client only about the services that the client is
 646          * interested in...
 647          */
 648         for(i = 0; i < number; i++) {
 649                 /* Try the address in the log */
 650                 self->daddr = discoveries[i].daddr;
 651                 self->saddr = 0x0;
 652                 IRDA_DEBUG(1, "%s(), trying daddr = %08x\n",
 653                            __func__, self->daddr);
 654
 655                 /* Query remote LM-IAS for this service */
 656                 err = irda_find_lsap_sel(self, name);
 657                 switch (err) {
 658                 case 0:
 659                         /* We found the requested service */
 660                         if(daddr != DEV_ADDR_ANY) {
 661                                 IRDA_DEBUG(1, "%s(), discovered service ''%s'' in two different devices !!!\n",
 662                                            __func__, name);
 663                                 self->daddr = DEV_ADDR_ANY;
 664                                 kfree(discoveries);
 665                                 return(-ENOTUNIQ);
 666                         }
 667                         /* First time we found that one, save it ! */
 668                         daddr = self->daddr;
 669                         dtsap_sel = self->dtsap_sel;
 670                         break;
 671                 case -EADDRNOTAVAIL:
 672                         /* Requested service simply doesn't exist on this node */
 673                         break;
 674                 default:
 675                         /* Something bad did happen :-( */
 676                         IRDA_DEBUG(0, "%s(), unexpected IAS query failure\n", __func__);
 677                         self->daddr = DEV_ADDR_ANY;
 678                         kfree(discoveries);
 679                         return(-EHOSTUNREACH);
 680                         break;
 681                 }
 682         }
 683         /* Cleanup our copy of the discovery log */
 684         kfree(discoveries);
 685
 686         /* Check out what we found */
 687         if(daddr == DEV_ADDR_ANY) {
 688                 IRDA_DEBUG(1, "%s(), cannot discover service ''%s'' in any device !!!\n",
 689                            __func__, name);
 690                 self->daddr = DEV_ADDR_ANY;
 691                 return(-EADDRNOTAVAIL);
 692         }
 693
 694         /* Revert back to discovered device & service */
 695         self->daddr = daddr;
 696         self->saddr = 0x0;
 697         self->dtsap_sel = dtsap_sel;
 698
 699         IRDA_DEBUG(1, "%s(), discovered requested service ''%s'' at address %08x\n",
 700                    __func__, name, self->daddr);
 701
 702         return 0;
 703 }
 704
 705 /*
 706  * Function irda_getname (sock, uaddr, uaddr_len, peer)
 707  *
 708  *    Return the our own, or peers socket address (sockaddr_irda)
 709  *
 710  */
 711 static int irda_getname(struct socket *sock, struct sockaddr *uaddr,
 712                         int *uaddr_len, int peer)
 713 {
 714         struct sockaddr_irda saddr;
 715         struct sock *sk = sock->sk;
 716         struct irda_sock *self = irda_sk(sk);
 717         int err;
 718
 719         lock_kernel();
 720         memset(&saddr, 0, sizeof(saddr));
 721         if (peer) {
 722                 err  = -ENOTCONN;
 723                 if (sk->sk_state != TCP_ESTABLISHED)
 724                         goto out;
 725
 726                 saddr.sir_family = AF_IRDA;
 727                 saddr.sir_lsap_sel = self->dtsap_sel;
 728                 saddr.sir_addr = self->daddr;
 729         } else {
 730                 saddr.sir_family = AF_IRDA;
 731                 saddr.sir_lsap_sel = self->stsap_sel;
 732                 saddr.sir_addr = self->saddr;
 733         }
 734
 735         IRDA_DEBUG(1, "%s(), tsap_sel = %#x\n", __func__, saddr.sir_lsap_sel);
 736         IRDA_DEBUG(1, "%s(), addr = %08x\n", __func__, saddr.sir_addr);
 737
 738         /* uaddr_len come to us uninitialised */
 739         *uaddr_len = sizeof (struct sockaddr_irda);
 740         memcpy(uaddr, &saddr, *uaddr_len);
 741         err = 0;
 742 out:
 743         unlock_kernel();
 744         return err;
 745 }
 746
 747 /*
 748  * Function irda_listen (sock, backlog)
 749  *
 750  *    Just move to the listen state
 751  *
 752  */
 753 static int irda_listen(struct socket *sock, int backlog)
 754 {
 755         struct sock *sk = sock->sk;
 756         int err = -EOPNOTSUPP;
 757
 758         IRDA_DEBUG(2, "%s()\n", __func__);
 759
 760         lock_kernel();
 761         if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) &&
 762             (sk->sk_type != SOCK_DGRAM))
 763                 goto out;
 764
 765         if (sk->sk_state != TCP_LISTEN) {
 766                 sk->sk_max_ack_backlog = backlog;
 767                 sk->sk_state           = TCP_LISTEN;
 768
 769                 err = 0;
 770         }
 771 out:
 772         unlock_kernel();
 773
 774         return err;
 775 }
 776
 777 /*
 778  * Function irda_bind (sock, uaddr, addr_len)
 779  *
 780  *    Used by servers to register their well known TSAP
 781  *
 782  */
 783 static int irda_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 784 {
 785         struct sock *sk = sock->sk;
 786         struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr;
 787         struct irda_sock *self = irda_sk(sk);
 788         int err;
 789
 790         IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
 791
 792         if (addr_len != sizeof(struct sockaddr_irda))
 793                 return -EINVAL;
 794
 795         lock_kernel();
 796 #ifdef CONFIG_IRDA_ULTRA
 797         /* Special care for Ultra sockets */
 798         if ((sk->sk_type == SOCK_DGRAM) &&
 799             (sk->sk_protocol == IRDAPROTO_ULTRA)) {
 800                 self->pid = addr->sir_lsap_sel;
 801                 err = -EOPNOTSUPP;
 802                 if (self->pid & 0x80) {
 803                         IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__);
 804                         goto out;
 805                 }
 806                 err = irda_open_lsap(self, self->pid);
 807                 if (err < 0)
 808                         goto out;
 809
 810                 /* Pretend we are connected */
 811                 sock->state = SS_CONNECTED;
 812                 sk->sk_state   = TCP_ESTABLISHED;
 813                 err = 0;
 814
 815                 goto out;
 816         }
 817 #endif /* CONFIG_IRDA_ULTRA */
 818
 819         self->ias_obj = irias_new_object(addr->sir_name, jiffies);
 820         err = -ENOMEM;
 821         if (self->ias_obj == NULL)
 822                 goto out;
 823
 824         err = irda_open_tsap(self, addr->sir_lsap_sel, addr->sir_name);
 825         if (err < 0) {
 826                 kfree(self->ias_obj->name);
 827                 kfree(self->ias_obj);
 828                 goto out;
 829         }
 830
 831         /*  Register with LM-IAS */
 832         irias_add_integer_attrib(self->ias_obj, "IrDA:TinyTP:LsapSel",
 833                                  self->stsap_sel, IAS_KERNEL_ATTR);
 834         irias_insert_object(self->ias_obj);
 835
 836         err = 0;
 837 out:
 838         unlock_kernel();
 839         return err;
 840 }
 841
 842 /*
 843  * Function irda_accept (sock, newsock, flags)
 844  *
 845  *    Wait for incoming connection
 846  *
 847  */
 848 static int irda_accept(struct socket *sock, struct socket *newsock, int flags)
 849 {
 850         struct sock *sk = sock->sk;
 851         struct irda_sock *new, *self = irda_sk(sk);
 852         struct sock *newsk;
 853         struct sk_buff *skb;
 854         int err;
 855
 856         IRDA_DEBUG(2, "%s()\n", __func__);
 857
 858         lock_kernel();
 859         err = irda_create(sock_net(sk), newsock, sk->sk_protocol, 0);
 860         if (err)
 861                 goto out;
 862
 863         err = -EINVAL;
 864         if (sock->state != SS_UNCONNECTED)
 865                 goto out;
 866
 867         if ((sk = sock->sk) == NULL)
 868                 goto out;
 869
 870         err = -EOPNOTSUPP;
 871         if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) &&
 872             (sk->sk_type != SOCK_DGRAM))
 873                 goto out;
 874
 875         err = -EINVAL;
 876         if (sk->sk_state != TCP_LISTEN)
 877                 goto out;
 878
 879         /*
 880          *      The read queue this time is holding sockets ready to use
 881          *      hooked into the SABM we saved
 882          */
 883
 884         /*
 885          * We can perform the accept only if there is incoming data
 886          * on the listening socket.
 887          * So, we will block the caller until we receive any data.
 888          * If the caller was waiting on select() or poll() before
 889          * calling us, the data is waiting for us ;-)
 890          * Jean II
 891          */
 892         while (1) {
 893                 skb = skb_dequeue(&sk->sk_receive_queue);
 894                 if (skb)
 895                         break;
 896
 897                 /* Non blocking operation */
 898                 err = -EWOULDBLOCK;
 899                 if (flags & O_NONBLOCK)
 900                         goto out;
 901
 902                 err = wait_event_interruptible(*(sk->sk_sleep),
 903                                         skb_peek(&sk->sk_receive_queue));
 904                 if (err)
 905                         goto out;
 906         }
 907
 908         newsk = newsock->sk;
 909         err = -EIO;
 910         if (newsk == NULL)
 911                 goto out;
 912
 913         newsk->sk_state = TCP_ESTABLISHED;
 914
 915         new = irda_sk(newsk);
 916
 917         /* Now attach up the new socket */
 918         new->tsap = irttp_dup(self->tsap, new);
 919         err = -EPERM; /* value does not seem to make sense. -arnd */
 920         if (!new->tsap) {
 921                 IRDA_DEBUG(0, "%s(), dup failed!\n", __func__);
 922                 kfree_skb(skb);
 923                 goto out;
 924         }
 925
 926         new->stsap_sel = new->tsap->stsap_sel;
 927         new->dtsap_sel = new->tsap->dtsap_sel;
 928         new->saddr = irttp_get_saddr(new->tsap);
 929         new->daddr = irttp_get_daddr(new->tsap);
 930
 931         new->max_sdu_size_tx = self->max_sdu_size_tx;
 932         new->max_sdu_size_rx = self->max_sdu_size_rx;
 933         new->max_data_size   = self->max_data_size;
 934         new->max_header_size = self->max_header_size;
 935
 936         memcpy(&new->qos_tx, &self->qos_tx, sizeof(struct qos_info));
 937
 938         /* Clean up the original one to keep it in listen state */
 939         irttp_listen(self->tsap);
 940
 941         kfree_skb(skb);
 942         sk->sk_ack_backlog--;
 943
 944         newsock->state = SS_CONNECTED;
 945
 946         irda_connect_response(new);
 947         err = 0;
 948 out:
 949         unlock_kernel();
 950         return err;
 951 }
 952
 953 /*
 954  * Function irda_connect (sock, uaddr, addr_len, flags)
 955  *
 956  *    Connect to a IrDA device
 957  *
 958  * The main difference with a "standard" connect is that with IrDA we need
 959  * to resolve the service name into a TSAP selector (in TCP, port number
 960  * doesn't have to be resolved).
 961  * Because of this service name resoltion, we can offer "auto-connect",
 962  * where we connect to a service without specifying a destination address.
 963  *
 964  * Note : by consulting "errno", the user space caller may learn the cause
 965  * of the failure. Most of them are visible in the function, others may come
 966  * from subroutines called and are listed here :
 967  *      o EBUSY : already processing a connect
 968  *      o EHOSTUNREACH : bad addr->sir_addr argument
 969  *      o EADDRNOTAVAIL : bad addr->sir_name argument
 970  *      o ENOTUNIQ : more than one node has addr->sir_name (auto-connect)
 971  *      o ENETUNREACH : no node found on the network (auto-connect)
 972  */
 973 static int irda_connect(struct socket *sock, struct sockaddr *uaddr,
 974                         int addr_len, int flags)
 975 {
 976         struct sock *sk = sock->sk;
 977         struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr;
 978         struct irda_sock *self = irda_sk(sk);
 979         int err;
 980
 981         IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
 982
 983         lock_kernel();
 984         /* Don't allow connect for Ultra sockets */
 985         err = -ESOCKTNOSUPPORT;
 986         if ((sk->sk_type == SOCK_DGRAM) && (sk->sk_protocol == IRDAPROTO_ULTRA))
 987                 goto out;
 988
 989         if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
 990                 sock->state = SS_CONNECTED;
 991                 err = 0;
 992                 goto out;   /* Connect completed during a ERESTARTSYS event */
 993         }
 994
 995         if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
 996                 sock->state = SS_UNCONNECTED;
 997                 err = -ECONNREFUSED;
 998                 goto out;
 999         }
1000
1001         err = -EISCONN;      /* No reconnect on a seqpacket socket */
1002         if (sk->sk_state == TCP_ESTABLISHED)
1003                 goto out;
1004
1005         sk->sk_state   = TCP_CLOSE;
1006         sock->state = SS_UNCONNECTED;
1007
1008         err = -EINVAL;
1009         if (addr_len != sizeof(struct sockaddr_irda))
1010                 goto out;
1011
1012         /* Check if user supplied any destination device address */
1013         if ((!addr->sir_addr) || (addr->sir_addr == DEV_ADDR_ANY)) {
1014                 /* Try to find one suitable */
1015                 err = irda_discover_daddr_and_lsap_sel(self, addr->sir_name);
1016                 if (err) {
1017                         IRDA_DEBUG(0, "%s(), auto-connect failed!\n", __func__);
1018                         goto out;
1019                 }
1020         } else {
1021                 /* Use the one provided by the user */
1022                 self->daddr = addr->sir_addr;
1023                 IRDA_DEBUG(1, "%s(), daddr = %08x\n", __func__, self->daddr);
1024
1025                 /* If we don't have a valid service name, we assume the
1026                  * user want to connect on a specific LSAP. Prevent
1027                  * the use of invalid LSAPs (IrLMP 1.1 p10). Jean II */
1028                 if((addr->sir_name[0] != '\0') ||
1029                    (addr->sir_lsap_sel >= 0x70)) {
1030                         /* Query remote LM-IAS using service name */
1031                         err = irda_find_lsap_sel(self, addr->sir_name);
1032                         if (err) {
1033                                 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__);
1034                                 goto out;
1035                         }
1036                 } else {
1037                         /* Directly connect to the remote LSAP
1038                          * specified by the sir_lsap field.
1039                          * Please use with caution, in IrDA LSAPs are
1040                          * dynamic and there is no "well-known" LSAP. */
1041                         self->dtsap_sel = addr->sir_lsap_sel;
1042                 }
1043         }
1044
1045         /* Check if we have opened a local TSAP */
1046         if (!self->tsap)
1047                 irda_open_tsap(self, LSAP_ANY, addr->sir_name);
1048
1049         /* Move to connecting socket, start sending Connect Requests */
1050         sock->state = SS_CONNECTING;
1051         sk->sk_state   = TCP_SYN_SENT;
1052
1053         /* Connect to remote device */
1054         err = irttp_connect_request(self->tsap, self->dtsap_sel,
1055                                     self->saddr, self->daddr, NULL,
1056                                     self->max_sdu_size_rx, NULL);
1057         if (err) {
1058                 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__);
1059                 goto out;
1060         }
1061
1062         /* Now the loop */
1063         err = -EINPROGRESS;
1064         if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
1065                 goto out;
1066
1067         err = -ERESTARTSYS;
1068         if (wait_event_interruptible(*(sk->sk_sleep),
1069                                      (sk->sk_state != TCP_SYN_SENT)))
1070                 goto out;
1071
1072         if (sk->sk_state != TCP_ESTABLISHED) {
1073                 sock->state = SS_UNCONNECTED;
1074                 err = sock_error(sk);
1075                 if (!err)
1076                         err = -ECONNRESET;
1077                 goto out;
1078         }
1079
1080         sock->state = SS_CONNECTED;
1081
1082         /* At this point, IrLMP has assigned our source address */
1083         self->saddr = irttp_get_saddr(self->tsap);
1084         err = 0;
1085 out:
1086         unlock_kernel();
1087         return err;
1088 }
1089
1090 static struct proto irda_proto = {
1091         .name     = "IRDA",
1092         .owner    = THIS_MODULE,
1093         .obj_size = sizeof(struct irda_sock),
1094 };
1095
1096 /*
1097  * Function irda_create (sock, protocol)
1098  *
1099  *    Create IrDA socket
1100  *
1101  */
1102 static int irda_create(struct net *net, struct socket *sock, int protocol,
1103                        int kern)
1104 {
1105         struct sock *sk;
1106         struct irda_sock *self;
1107
1108         IRDA_DEBUG(2, "%s()\n", __func__);
1109
1110         if (net != &init_net)
1111                 return -EAFNOSUPPORT;
1112
1113         /* Check for valid socket type */
1114         switch (sock->type) {
1115         case SOCK_STREAM:     /* For TTP connections with SAR disabled */
1116         case SOCK_SEQPACKET:  /* For TTP connections with SAR enabled */
1117         case SOCK_DGRAM:      /* For TTP Unitdata or LMP Ultra transfers */
1118                 break;
1119         default:
1120                 return -ESOCKTNOSUPPORT;
1121         }
1122
1123         /* Allocate networking socket */
1124         sk = sk_alloc(net, PF_IRDA, GFP_ATOMIC, &irda_proto);
1125         if (sk == NULL)
1126                 return -ENOMEM;
1127
1128         self = irda_sk(sk);
1129         IRDA_DEBUG(2, "%s() : self is %p\n", __func__, self);
1130
1131         init_waitqueue_head(&self->query_wait);
1132
1133         switch (sock->type) {
1134         case SOCK_STREAM:
1135                 sock->ops = &irda_stream_ops;
1136                 self->max_sdu_size_rx = TTP_SAR_DISABLE;
1137                 break;
1138         case SOCK_SEQPACKET:
1139                 sock->ops = &irda_seqpacket_ops;
1140                 self->max_sdu_size_rx = TTP_SAR_UNBOUND;
1141                 break;
1142         case SOCK_DGRAM:
1143                 switch (protocol) {
1144 #ifdef CONFIG_IRDA_ULTRA
1145                 case IRDAPROTO_ULTRA:
1146                         sock->ops = &irda_ultra_ops;
1147                         /* Initialise now, because we may send on unbound
1148                          * sockets. Jean II */
1149                         self->max_data_size = ULTRA_MAX_DATA - LMP_PID_HEADER;
1150                         self->max_header_size = IRDA_MAX_HEADER + LMP_PID_HEADER;
1151                         break;
1152 #endif /* CONFIG_IRDA_ULTRA */
1153                 case IRDAPROTO_UNITDATA:
1154                         sock->ops = &irda_dgram_ops;
1155                         /* We let Unitdata conn. be like seqpack conn. */
1156                         self->max_sdu_size_rx = TTP_SAR_UNBOUND;
1157                         break;
1158                 default:
1159                         sk_free(sk);
1160                         return -ESOCKTNOSUPPORT;
1161                 }
1162                 break;
1163         default:
1164                 sk_free(sk);
1165                 return -ESOCKTNOSUPPORT;
1166         }
1167
1168         /* Initialise networking socket struct */
1169         sock_init_data(sock, sk);       /* Note : set sk->sk_refcnt to 1 */
1170         sk->sk_family = PF_IRDA;
1171         sk->sk_protocol = protocol;
1172
1173         /* Register as a client with IrLMP */
1174         self->ckey = irlmp_register_client(0, NULL, NULL, NULL);
1175         self->mask.word = 0xffff;
1176         self->rx_flow = self->tx_flow = FLOW_START;
1177         self->nslots = DISCOVERY_DEFAULT_SLOTS;
1178         self->daddr = DEV_ADDR_ANY;     /* Until we get connected */
1179         self->saddr = 0x0;              /* so IrLMP assign us any link */
1180         return 0;
1181 }
1182
1183 /*
1184  * Function irda_destroy_socket (self)
1185  *
1186  *    Destroy socket
1187  *
1188  */
1189 static void irda_destroy_socket(struct irda_sock *self)
1190 {
1191         IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
1192
1193         /* Unregister with IrLMP */
1194         irlmp_unregister_client(self->ckey);
1195         irlmp_unregister_service(self->skey);
1196
1197         /* Unregister with LM-IAS */
1198         if (self->ias_obj) {
1199                 irias_delete_object(self->ias_obj);
1200                 self->ias_obj = NULL;
1201         }
1202
1203         if (self->iriap) {
1204                 iriap_close(self->iriap);
1205                 self->iriap = NULL;
1206         }
1207
1208         if (self->tsap) {
1209                 irttp_disconnect_request(self->tsap, NULL, P_NORMAL);
1210                 irttp_close_tsap(self->tsap);
1211                 self->tsap = NULL;
1212         }
1213 #ifdef CONFIG_IRDA_ULTRA
1214         if (self->lsap) {
1215                 irlmp_close_lsap(self->lsap);
1216                 self->lsap = NULL;
1217         }
1218 #endif /* CONFIG_IRDA_ULTRA */
1219 }
1220
1221 /*
1222  * Function irda_release (sock)
1223  */
1224 static int irda_release(struct socket *sock)
1225 {
1226         struct sock *sk = sock->sk;
1227
1228         IRDA_DEBUG(2, "%s()\n", __func__);
1229
1230         if (sk == NULL)
1231                 return 0;
1232
1233         lock_kernel();
1234         lock_sock(sk);
1235         sk->sk_state       = TCP_CLOSE;
1236         sk->sk_shutdown   |= SEND_SHUTDOWN;
1237         sk->sk_state_change(sk);
1238
1239         /* Destroy IrDA socket */
1240         irda_destroy_socket(irda_sk(sk));
1241
1242         sock_orphan(sk);
1243         sock->sk   = NULL;
1244         release_sock(sk);
1245
1246         /* Purge queues (see sock_init_data()) */
1247         skb_queue_purge(&sk->sk_receive_queue);
1248
1249         /* Destroy networking socket if we are the last reference on it,
1250          * i.e. if(sk->sk_refcnt == 0) -> sk_free(sk) */
1251         sock_put(sk);
1252         unlock_kernel();
1253
1254         /* Notes on socket locking and deallocation... - Jean II
1255          * In theory we should put pairs of sock_hold() / sock_put() to
1256          * prevent the socket to be destroyed whenever there is an
1257          * outstanding request or outstanding incoming packet or event.
1258          *
1259          * 1) This may include IAS request, both in connect and getsockopt.
1260          * Unfortunately, the situation is a bit more messy than it looks,
1261          * because we close iriap and kfree(self) above.
1262          *
1263          * 2) This may include selective discovery in getsockopt.
1264          * Same stuff as above, irlmp registration and self are gone.
1265          *
1266          * Probably 1 and 2 may not matter, because it's all triggered
1267          * by a process and the socket layer already prevent the
1268          * socket to go away while a process is holding it, through
1269          * sockfd_put() and fput()...
1270          *
1271          * 3) This may include deferred TSAP closure. In particular,
1272          * we may receive a late irda_disconnect_indication()
1273          * Fortunately, (tsap_cb *)->close_pend should protect us
1274          * from that.
1275          *
1276          * I did some testing on SMP, and it looks solid. And the socket
1277          * memory leak is now gone... - Jean II
1278          */
1279
1280         return 0;
1281 }
1282
1283 /*
1284  * Function irda_sendmsg (iocb, sock, msg, len)
1285  *
1286  *    Send message down to TinyTP. This function is used for both STREAM and
1287  *    SEQPACK services. This is possible since it forces the client to
1288  *    fragment the message if necessary
1289  */
1290 static int irda_sendmsg(struct kiocb *iocb, struct socket *sock,
1291                         struct msghdr *msg, size_t len)
1292 {
1293         struct sock *sk = sock->sk;
1294         struct irda_sock *self;
1295         struct sk_buff *skb;
1296         int err = -EPIPE;
1297
1298         IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len);
1299
1300         lock_kernel();
1301         /* Note : socket.c set MSG_EOR on SEQPACKET sockets */
1302         if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_EOR | MSG_CMSG_COMPAT |
1303                                MSG_NOSIGNAL)) {
1304                 err = -EINVAL;
1305                 goto out;
1306         }
1307
1308         if (sk->sk_shutdown & SEND_SHUTDOWN)
1309                 goto out_err;
1310
1311         if (sk->sk_state != TCP_ESTABLISHED) {
1312                 err = -ENOTCONN;
1313                 goto out;
1314         }
1315
1316         self = irda_sk(sk);
1317
1318         /* Check if IrTTP is wants us to slow down */
1319
1320         if (wait_event_interruptible(*(sk->sk_sleep),
1321             (self->tx_flow != FLOW_STOP  ||  sk->sk_state != TCP_ESTABLISHED))) {
1322                 err = -ERESTARTSYS;
1323                 goto out;
1324         }
1325
1326         /* Check if we are still connected */
1327         if (sk->sk_state != TCP_ESTABLISHED) {
1328                 err = -ENOTCONN;
1329                 goto out;
1330         }
1331
1332         /* Check that we don't send out too big frames */
1333         if (len > self->max_data_size) {
1334                 IRDA_DEBUG(2, "%s(), Chopping frame from %zd to %d bytes!\n",
1335                            __func__, len, self->max_data_size);
1336                 len = self->max_data_size;
1337         }
1338
1339         skb = sock_alloc_send_skb(sk, len + self->max_header_size + 16,
1340                                   msg->msg_flags & MSG_DONTWAIT, &err);
1341         if (!skb)
1342                 goto out_err;
1343
1344         skb_reserve(skb, self->max_header_size + 16);
1345         skb_reset_transport_header(skb);
1346         skb_put(skb, len);
1347         err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1348         if (err) {
1349                 kfree_skb(skb);
1350                 goto out_err;
1351         }
1352
1353         /*
1354          * Just send the message to TinyTP, and let it deal with possible
1355          * errors. No need to duplicate all that here
1356          */
1357         err = irttp_data_request(self->tsap, skb);
1358         if (err) {
1359                 IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err);
1360                 goto out_err;
1361         }
1362
1363         unlock_kernel();
1364         /* Tell client how much data we actually sent */
1365         return len;
1366
1367 out_err:
1368         err = sk_stream_error(sk, msg->msg_flags, err);
1369 out:
1370         unlock_kernel();
1371         return err;
1372
1373 }
1374
1375 /*
1376  * Function irda_recvmsg_dgram (iocb, sock, msg, size, flags)
1377  *
1378  *    Try to receive message and copy it to user. The frame is discarded
1379  *    after being read, regardless of how much the user actually read
1380  */
1381 static int irda_recvmsg_dgram(struct kiocb *iocb, struct socket *sock,
1382                               struct msghdr *msg, size_t size, int flags)
1383 {
1384         struct sock *sk = sock->sk;
1385         struct irda_sock *self = irda_sk(sk);
1386         struct sk_buff *skb;
1387         size_t copied;
1388         int err;
1389
1390         IRDA_DEBUG(4, "%s()\n", __func__);
1391
1392         lock_kernel();
1393         if ((err = sock_error(sk)) < 0)
1394                 goto out;
1395
1396         skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
1397                                 flags & MSG_DONTWAIT, &err);
1398         if (!skb)
1399                 goto out;
1400
1401         skb_reset_transport_header(skb);
1402         copied = skb->len;
1403
1404         if (copied > size) {
1405                 IRDA_DEBUG(2, "%s(), Received truncated frame (%zd < %zd)!\n",
1406                            __func__, copied, size);
1407                 copied = size;
1408                 msg->msg_flags |= MSG_TRUNC;
1409         }
1410         skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1411
1412         skb_free_datagram(sk, skb);
1413
1414         /*
1415          *  Check if we have previously stopped IrTTP and we know
1416          *  have more free space in our rx_queue. If so tell IrTTP
1417          *  to start delivering frames again before our rx_queue gets
1418          *  empty
1419          */
1420         if (self->rx_flow == FLOW_STOP) {
1421                 if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) {
1422                         IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__);
1423                         self->rx_flow = FLOW_START;
1424                         irttp_flow_request(self->tsap, FLOW_START);
1425                 }
1426         }
1427         unlock_kernel();
1428         return copied;
1429
1430 out:
1431         unlock_kernel();
1432         return err;
1433 }
1434
1435 /*
1436  * Function irda_recvmsg_stream (iocb, sock, msg, size, flags)
1437  */
1438 static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock,
1439                                struct msghdr *msg, size_t size, int flags)
1440 {
1441         struct sock *sk = sock->sk;
1442         struct irda_sock *self = irda_sk(sk);
1443         int noblock = flags & MSG_DONTWAIT;
1444         size_t copied = 0;
1445         int target, err;
1446         long timeo;
1447
1448         IRDA_DEBUG(3, "%s()\n", __func__);
1449
1450         lock_kernel();
1451         if ((err = sock_error(sk)) < 0)
1452                 goto out;
1453
1454         err = -EINVAL;
1455         if (sock->flags & __SO_ACCEPTCON)
1456                 goto out;
1457
1458         err =-EOPNOTSUPP;
1459         if (flags & MSG_OOB)
1460                 goto out;
1461
1462         err = 0;
1463         target = sock_rcvlowat(sk, flags & MSG_WAITALL, size);
1464         timeo = sock_rcvtimeo(sk, noblock);
1465
1466         msg->msg_namelen = 0;
1467
1468         do {
1469                 int chunk;
1470                 struct sk_buff *skb = skb_dequeue(&sk->sk_receive_queue);
1471
1472                 if (skb == NULL) {
1473                         DEFINE_WAIT(wait);
1474                         err = 0;
1475
1476                         if (copied >= target)
1477                                 break;
1478
1479                         prepare_to_wait_exclusive(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
1480
1481                         /*
1482                          *      POSIX 1003.1g mandates this order.
1483                          */
1484                         err = sock_error(sk);
1485                         if (err)
1486                                 ;
1487                         else if (sk->sk_shutdown & RCV_SHUTDOWN)
1488                                 ;
1489                         else if (noblock)
1490                                 err = -EAGAIN;
1491                         else if (signal_pending(current))
1492                                 err = sock_intr_errno(timeo);
1493                         else if (sk->sk_state != TCP_ESTABLISHED)
1494                                 err = -ENOTCONN;
1495                         else if (skb_peek(&sk->sk_receive_queue) == NULL)
1496                                 /* Wait process until data arrives */
1497                                 schedule();
1498
1499                         finish_wait(sk->sk_sleep, &wait);
1500
1501                         if (err)
1502                                 goto out;
1503                         if (sk->sk_shutdown & RCV_SHUTDOWN)
1504                                 break;
1505
1506                         continue;
1507                 }
1508
1509                 chunk = min_t(unsigned int, skb->len, size);
1510                 if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) {
1511                         skb_queue_head(&sk->sk_receive_queue, skb);
1512                         if (copied == 0)
1513                                 copied = -EFAULT;
1514                         break;
1515                 }
1516                 copied += chunk;
1517                 size -= chunk;
1518
1519                 /* Mark read part of skb as used */
1520                 if (!(flags & MSG_PEEK)) {
1521                         skb_pull(skb, chunk);
1522
1523                         /* put the skb back if we didn't use it up.. */
1524                         if (skb->len) {
1525                                 IRDA_DEBUG(1, "%s(), back on q!\n",
1526                                            __func__);
1527                                 skb_queue_head(&sk->sk_receive_queue, skb);
1528                                 break;
1529                         }
1530
1531                         kfree_skb(skb);
1532                 } else {
1533                         IRDA_DEBUG(0, "%s() questionable!?\n", __func__);
1534
1535                         /* put message back and return */
1536                         skb_queue_head(&sk->sk_receive_queue, skb);
1537                         break;
1538                 }
1539         } while (size);
1540
1541         /*
1542          *  Check if we have previously stopped IrTTP and we know
1543          *  have more free space in our rx_queue. If so tell IrTTP
1544          *  to start delivering frames again before our rx_queue gets
1545          *  empty
1546          */
1547         if (self->rx_flow == FLOW_STOP) {
1548                 if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) {
1549                         IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__);
1550                         self->rx_flow = FLOW_START;
1551                         irttp_flow_request(self->tsap, FLOW_START);
1552                 }
1553         }
1554
1555 out:
1556         unlock_kernel();
1557         return err ? : copied;
1558 }
1559
1560 /*
1561  * Function irda_sendmsg_dgram (iocb, sock, msg, len)
1562  *
1563  *    Send message down to TinyTP for the unreliable sequenced
1564  *    packet service...
1565  *
1566  */
1567 static int irda_sendmsg_dgram(struct kiocb *iocb, struct socket *sock,
1568                               struct msghdr *msg, size_t len)
1569 {
1570         struct sock *sk = sock->sk;
1571         struct irda_sock *self;
1572         struct sk_buff *skb;
1573         int err;
1574
1575         lock_kernel();
1576
1577         IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len);
1578
1579         err = -EINVAL;
1580         if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
1581                 goto out;
1582
1583         if (sk->sk_shutdown & SEND_SHUTDOWN) {
1584                 send_sig(SIGPIPE, current, 0);
1585                 err = -EPIPE;
1586                 goto out;
1587         }
1588
1589         err = -ENOTCONN;
1590         if (sk->sk_state != TCP_ESTABLISHED)
1591                 goto out;
1592
1593         self = irda_sk(sk);
1594
1595         /*
1596          * Check that we don't send out too big frames. This is an unreliable
1597          * service, so we have no fragmentation and no coalescence
1598          */
1599         if (len > self->max_data_size) {
1600                 IRDA_DEBUG(0, "%s(), Warning to much data! "
1601                            "Chopping frame from %zd to %d bytes!\n",
1602                            __func__, len, self->max_data_size);
1603                 len = self->max_data_size;
1604         }
1605
1606         skb = sock_alloc_send_skb(sk, len + self->max_header_size,
1607                                   msg->msg_flags & MSG_DONTWAIT, &err);
1608         err = -ENOBUFS;
1609         if (!skb)
1610                 goto out;
1611
1612         skb_reserve(skb, self->max_header_size);
1613         skb_reset_transport_header(skb);
1614
1615         IRDA_DEBUG(4, "%s(), appending user data\n", __func__);
1616         skb_put(skb, len);
1617         err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1618         if (err) {
1619                 kfree_skb(skb);
1620                 goto out;
1621         }
1622
1623         /*
1624          * Just send the message to TinyTP, and let it deal with possible
1625          * errors. No need to duplicate all that here
1626          */
1627         err = irttp_udata_request(self->tsap, skb);
1628         if (err) {
1629                 IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err);
1630                 goto out;
1631         }
1632         unlock_kernel();
1633         return len;
1634 out:
1635         unlock_kernel();
1636         return err;
1637 }
1638
1639 /*
1640  * Function irda_sendmsg_ultra (iocb, sock, msg, len)
1641  *
1642  *    Send message down to IrLMP for the unreliable Ultra
1643  *    packet service...
1644  */
1645 #ifdef CONFIG_IRDA_ULTRA
1646 static int irda_sendmsg_ultra(struct kiocb *iocb, struct socket *sock,
1647                               struct msghdr *msg, size_t len)
1648 {
1649         struct sock *sk = sock->sk;
1650         struct irda_sock *self;
1651         __u8 pid = 0;
1652         int bound = 0;
1653         struct sk_buff *skb;
1654         int err;
1655
1656         IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len);
1657
1658         lock_kernel();
1659         err = -EINVAL;
1660         if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
1661                 goto out;
1662
1663         err = -EPIPE;
1664         if (sk->sk_shutdown & SEND_SHUTDOWN) {
1665                 send_sig(SIGPIPE, current, 0);
1666                 goto out;
1667         }
1668
1669         self = irda_sk(sk);
1670
1671         /* Check if an address was specified with sendto. Jean II */
1672         if (msg->msg_name) {
1673                 struct sockaddr_irda *addr = (struct sockaddr_irda *) msg->msg_name;
1674                 err = -EINVAL;
1675                 /* Check address, extract pid. Jean II */
1676                 if (msg->msg_namelen < sizeof(*addr))
1677                         goto out;
1678                 if (addr->sir_family != AF_IRDA)
1679                         goto out;
1680
1681                 pid = addr->sir_lsap_sel;
1682                 if (pid & 0x80) {
1683                         IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__);
1684                         err = -EOPNOTSUPP;
1685                         goto out;
1686                 }
1687         } else {
1688                 /* Check that the socket is properly bound to an Ultra
1689                  * port. Jean II */
1690                 if ((self->lsap == NULL) ||
1691                     (sk->sk_state != TCP_ESTABLISHED)) {
1692                         IRDA_DEBUG(0, "%s(), socket not bound to Ultra PID.\n",
1693                                    __func__);
1694                         err = -ENOTCONN;
1695                         goto out;
1696                 }
1697                 /* Use PID from socket */
1698                 bound = 1;
1699         }
1700
1701         /*
1702          * Check that we don't send out too big frames. This is an unreliable
1703          * service, so we have no fragmentation and no coalescence
1704          */
1705         if (len > self->max_data_size) {
1706                 IRDA_DEBUG(0, "%s(), Warning to much data! "
1707                            "Chopping frame from %zd to %d bytes!\n",
1708                            __func__, len, self->max_data_size);
1709                 len = self->max_data_size;
1710         }
1711
1712         skb = sock_alloc_send_skb(sk, len + self->max_header_size,
1713                                   msg->msg_flags & MSG_DONTWAIT, &err);
1714         err = -ENOBUFS;
1715         if (!skb)
1716                 goto out;
1717
1718         skb_reserve(skb, self->max_header_size);
1719         skb_reset_transport_header(skb);
1720
1721         IRDA_DEBUG(4, "%s(), appending user data\n", __func__);
1722         skb_put(skb, len);
1723         err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1724         if (err) {
1725                 kfree_skb(skb);
1726                 goto out;
1727         }
1728
1729         err = irlmp_connless_data_request((bound ? self->lsap : NULL),
1730                                           skb, pid);
1731         if (err)
1732                 IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err);
1733 out:
1734         unlock_kernel();
1735         return err ? : len;
1736 }
1737 #endif /* CONFIG_IRDA_ULTRA */
1738
1739 /*
1740  * Function irda_shutdown (sk, how)
1741  */
1742 static int irda_shutdown(struct socket *sock, int how)
1743 {
1744         struct sock *sk = sock->sk;
1745         struct irda_sock *self = irda_sk(sk);
1746
1747         IRDA_DEBUG(1, "%s(%p)\n", __func__, self);
1748
1749         lock_kernel();
1750
1751         sk->sk_state       = TCP_CLOSE;
1752         sk->sk_shutdown   |= SEND_SHUTDOWN;
1753         sk->sk_state_change(sk);
1754
1755         if (self->iriap) {
1756                 iriap_close(self->iriap);
1757                 self->iriap = NULL;
1758         }
1759
1760         if (self->tsap) {
1761                 irttp_disconnect_request(self->tsap, NULL, P_NORMAL);
1762                 irttp_close_tsap(self->tsap);
1763                 self->tsap = NULL;
1764         }
1765
1766         /* A few cleanup so the socket look as good as new... */
1767         self->rx_flow = self->tx_flow = FLOW_START;     /* needed ??? */
1768         self->daddr = DEV_ADDR_ANY;     /* Until we get re-connected */
1769         self->saddr = 0x0;              /* so IrLMP assign us any link */
1770
1771         unlock_kernel();
1772
1773         return 0;
1774 }
1775
1776 /*
1777  * Function irda_poll (file, sock, wait)
1778  */
1779 static unsigned int irda_poll(struct file * file, struct socket *sock,
1780                               poll_table *wait)
1781 {
1782         struct sock *sk = sock->sk;
1783         struct irda_sock *self = irda_sk(sk);
1784         unsigned int mask;
1785
1786         IRDA_DEBUG(4, "%s()\n", __func__);
1787
1788         lock_kernel();
1789         poll_wait(file, sk->sk_sleep, wait);
1790         mask = 0;
1791
1792         /* Exceptional events? */
1793         if (sk->sk_err)
1794                 mask |= POLLERR;
1795         if (sk->sk_shutdown & RCV_SHUTDOWN) {
1796                 IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__);
1797                 mask |= POLLHUP;
1798         }
1799
1800         /* Readable? */
1801         if (!skb_queue_empty(&sk->sk_receive_queue)) {
1802                 IRDA_DEBUG(4, "Socket is readable\n");
1803                 mask |= POLLIN | POLLRDNORM;
1804         }
1805
1806         /* Connection-based need to check for termination and startup */
1807         switch (sk->sk_type) {
1808         case SOCK_STREAM:
1809                 if (sk->sk_state == TCP_CLOSE) {
1810                         IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__);
1811                         mask |= POLLHUP;
1812                 }
1813
1814                 if (sk->sk_state == TCP_ESTABLISHED) {
1815                         if ((self->tx_flow == FLOW_START) &&
1816                             sock_writeable(sk))
1817                         {
1818                                 mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
1819                         }
1820                 }
1821                 break;
1822         case SOCK_SEQPACKET:
1823                 if ((self->tx_flow == FLOW_START) &&
1824                     sock_writeable(sk))
1825                 {
1826                         mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
1827                 }
1828                 break;
1829         case SOCK_DGRAM:
1830                 if (sock_writeable(sk))
1831                         mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
1832                 break;
1833         default:
1834                 break;
1835         }
1836         unlock_kernel();
1837         return mask;
1838 }
1839
1840 static unsigned int irda_datagram_poll(struct file *file, struct socket *sock,
1841                            poll_table *wait)
1842 {
1843         int err;
1844
1845         lock_kernel();
1846         err = datagram_poll(file, sock, wait);
1847         unlock_kernel();
1848
1849         return err;
1850 }
1851
1852 /*
1853  * Function irda_ioctl (sock, cmd, arg)
1854  */
1855 static int irda_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1856 {
1857         struct sock *sk = sock->sk;
1858         int err;
1859
1860         IRDA_DEBUG(4, "%s(), cmd=%#x\n", __func__, cmd);
1861
1862         lock_kernel();
1863         err = -EINVAL;
1864         switch (cmd) {
1865         case TIOCOUTQ: {
1866                 long amount;
1867
1868                 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
1869                 if (amount < 0)
1870                         amount = 0;
1871                 err = put_user(amount, (unsigned int __user *)arg);
1872                 break;
1873         }
1874
1875         case TIOCINQ: {
1876                 struct sk_buff *skb;
1877                 long amount = 0L;
1878                 /* These two are safe on a single CPU system as only user tasks fiddle here */
1879                 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1880                         amount = skb->len;
1881                 err = put_user(amount, (unsigned int __user *)arg);
1882                 break;
1883         }
1884
1885         case SIOCGSTAMP:
1886                 if (sk != NULL)
1887                         err = sock_get_timestamp(sk, (struct timeval __user *)arg);
1888                 break;
1889
1890         case SIOCGIFADDR:
1891         case SIOCSIFADDR:
1892         case SIOCGIFDSTADDR:
1893         case SIOCSIFDSTADDR:
1894         case SIOCGIFBRDADDR:
1895         case SIOCSIFBRDADDR:
1896         case SIOCGIFNETMASK:
1897         case SIOCSIFNETMASK:
1898         case SIOCGIFMETRIC:
1899         case SIOCSIFMETRIC:
1900                 break;
1901         default:
1902                 IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __func__);
1903                 err = -ENOIOCTLCMD;
1904         }
1905         unlock_kernel();
1906
1907         return err;
1908 }
1909
1910 #ifdef CONFIG_COMPAT
1911 /*
1912  * Function irda_ioctl (sock, cmd, arg)
1913  */
1914 static int irda_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1915 {
1916         /*
1917          * All IRDA's ioctl are standard ones.
1918          */
1919         return -ENOIOCTLCMD;
1920 }
1921 #endif
1922
1923 /*
1924  * Function irda_setsockopt (sock, level, optname, optval, optlen)
1925  *
1926  *    Set some options for the socket
1927  *
1928  */
1929 static int __irda_setsockopt(struct socket *sock, int level, int optname,
1930                            char __user *optval, unsigned int optlen)
1931 {
1932         struct sock *sk = sock->sk;
1933         struct irda_sock *self = irda_sk(sk);
1934         struct irda_ias_set    *ias_opt;
1935         struct ias_object      *ias_obj;
1936         struct ias_attrib *     ias_attr;       /* Attribute in IAS object */
1937         int opt, free_ias = 0;
1938
1939         IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
1940
1941         if (level != SOL_IRLMP)
1942                 return -ENOPROTOOPT;
1943
1944         switch (optname) {
1945         case IRLMP_IAS_SET:
1946                 /* The user want to add an attribute to an existing IAS object
1947                  * (in the IAS database) or to create a new object with this
1948                  * attribute.
1949                  * We first query IAS to know if the object exist, and then
1950                  * create the right attribute...
1951                  */
1952
1953                 if (optlen != sizeof(struct irda_ias_set))
1954                         return -EINVAL;
1955
1956                 ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
1957                 if (ias_opt == NULL)
1958                         return -ENOMEM;
1959
1960                 /* Copy query to the driver. */
1961                 if (copy_from_user(ias_opt, optval, optlen)) {
1962                         kfree(ias_opt);
1963                         return -EFAULT;
1964                 }
1965
1966                 /* Find the object we target.
1967                  * If the user gives us an empty string, we use the object
1968                  * associated with this socket. This will workaround
1969                  * duplicated class name - Jean II */
1970                 if(ias_opt->irda_class_name[0] == '\0') {
1971                         if(self->ias_obj == NULL) {
1972                                 kfree(ias_opt);
1973                                 return -EINVAL;
1974                         }
1975                         ias_obj = self->ias_obj;
1976                 } else
1977                         ias_obj = irias_find_object(ias_opt->irda_class_name);
1978
1979                 /* Only ROOT can mess with the global IAS database.
1980                  * Users can only add attributes to the object associated
1981                  * with the socket they own - Jean II */
1982                 if((!capable(CAP_NET_ADMIN)) &&
1983                    ((ias_obj == NULL) || (ias_obj != self->ias_obj))) {
1984                         kfree(ias_opt);
1985                         return -EPERM;
1986                 }
1987
1988                 /* If the object doesn't exist, create it */
1989                 if(ias_obj == (struct ias_object *) NULL) {
1990                         /* Create a new object */
1991                         ias_obj = irias_new_object(ias_opt->irda_class_name,
1992                                                    jiffies);
1993                         if (ias_obj == NULL) {
1994                                 kfree(ias_opt);
1995                                 return -ENOMEM;
1996                         }
1997                         free_ias = 1;
1998                 }
1999
2000                 /* Do we have the attribute already ? */
2001                 if(irias_find_attrib(ias_obj, ias_opt->irda_attrib_name)) {
2002                         kfree(ias_opt);
2003                         if (free_ias) {
2004                                 kfree(ias_obj->name);
2005                                 kfree(ias_obj);
2006                         }
2007                         return -EINVAL;
2008                 }
2009
2010                 /* Look at the type */
2011                 switch(ias_opt->irda_attrib_type) {
2012                 case IAS_INTEGER:
2013                         /* Add an integer attribute */
2014                         irias_add_integer_attrib(
2015                                 ias_obj,
2016                                 ias_opt->irda_attrib_name,
2017                                 ias_opt->attribute.irda_attrib_int,
2018                                 IAS_USER_ATTR);
2019                         break;
2020                 case IAS_OCT_SEQ:
2021                         /* Check length */
2022                         if(ias_opt->attribute.irda_attrib_octet_seq.len >
2023                            IAS_MAX_OCTET_STRING) {
2024                                 kfree(ias_opt);
2025                                 if (free_ias) {
2026                                         kfree(ias_obj->name);
2027                                         kfree(ias_obj);
2028                                 }
2029
2030                                 return -EINVAL;
2031                         }
2032                         /* Add an octet sequence attribute */
2033                         irias_add_octseq_attrib(
2034                               ias_obj,
2035                               ias_opt->irda_attrib_name,
2036                               ias_opt->attribute.irda_attrib_octet_seq.octet_seq,
2037                               ias_opt->attribute.irda_attrib_octet_seq.len,
2038                               IAS_USER_ATTR);
2039                         break;
2040                 case IAS_STRING:
2041                         /* Should check charset & co */
2042                         /* Check length */
2043                         /* The length is encoded in a __u8, and
2044                          * IAS_MAX_STRING == 256, so there is no way
2045                          * userspace can pass us a string too large.
2046                          * Jean II */
2047                         /* NULL terminate the string (avoid troubles) */
2048                         ias_opt->attribute.irda_attrib_string.string[ias_opt->attribute.irda_attrib_string.len] = '\0';
2049                         /* Add a string attribute */
2050                         irias_add_string_attrib(
2051                                 ias_obj,
2052                                 ias_opt->irda_attrib_name,
2053                                 ias_opt->attribute.irda_attrib_string.string,
2054                                 IAS_USER_ATTR);
2055                         break;
2056                 default :
2057                         kfree(ias_opt);
2058                         if (free_ias) {
2059                                 kfree(ias_obj->name);
2060                                 kfree(ias_obj);
2061                         }
2062                         return -EINVAL;
2063                 }
2064                 irias_insert_object(ias_obj);
2065                 kfree(ias_opt);
2066                 break;
2067         case IRLMP_IAS_DEL:
2068                 /* The user want to delete an object from our local IAS
2069                  * database. We just need to query the IAS, check is the
2070                  * object is not owned by the kernel and delete it.
2071                  */
2072
2073                 if (optlen != sizeof(struct irda_ias_set))
2074                         return -EINVAL;
2075
2076                 ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
2077                 if (ias_opt == NULL)
2078                         return -ENOMEM;
2079
2080                 /* Copy query to the driver. */
2081                 if (copy_from_user(ias_opt, optval, optlen)) {
2082                         kfree(ias_opt);
2083                         return -EFAULT;
2084                 }
2085
2086                 /* Find the object we target.
2087                  * If the user gives us an empty string, we use the object
2088                  * associated with this socket. This will workaround
2089                  * duplicated class name - Jean II */
2090                 if(ias_opt->irda_class_name[0] == '\0')
2091                         ias_obj = self->ias_obj;
2092                 else
2093                         ias_obj = irias_find_object(ias_opt->irda_class_name);
2094                 if(ias_obj == (struct ias_object *) NULL) {
2095                         kfree(ias_opt);
2096                         return -EINVAL;
2097                 }
2098
2099                 /* Only ROOT can mess with the global IAS database.
2100                  * Users can only del attributes from the object associated
2101                  * with the socket they own - Jean II */
2102                 if((!capable(CAP_NET_ADMIN)) &&
2103                    ((ias_obj == NULL) || (ias_obj != self->ias_obj))) {
2104                         kfree(ias_opt);
2105                         return -EPERM;
2106                 }
2107
2108                 /* Find the attribute (in the object) we target */
2109                 ias_attr = irias_find_attrib(ias_obj,
2110                                              ias_opt->irda_attrib_name);
2111                 if(ias_attr == (struct ias_attrib *) NULL) {
2112                         kfree(ias_opt);
2113                         return -EINVAL;
2114                 }
2115
2116                 /* Check is the user space own the object */
2117                 if(ias_attr->value->owner != IAS_USER_ATTR) {
2118                         IRDA_DEBUG(1, "%s(), attempting to delete a kernel attribute\n", __func__);
2119                         kfree(ias_opt);
2120                         return -EPERM;
2121                 }
2122
2123                 /* Remove the attribute (and maybe the object) */
2124                 irias_delete_attrib(ias_obj, ias_attr, 1);
2125                 kfree(ias_opt);
2126                 break;
2127         case IRLMP_MAX_SDU_SIZE:
2128                 if (optlen < sizeof(int))
2129                         return -EINVAL;
2130
2131                 if (get_user(opt, (int __user *)optval))
2132                         return -EFAULT;
2133
2134                 /* Only possible for a seqpacket service (TTP with SAR) */
2135                 if (sk->sk_type != SOCK_SEQPACKET) {
2136                         IRDA_DEBUG(2, "%s(), setting max_sdu_size = %d\n",
2137                                    __func__, opt);
2138                         self->max_sdu_size_rx = opt;
2139                 } else {
2140                         IRDA_WARNING("%s: not allowed to set MAXSDUSIZE for this socket type!\n",
2141                                      __func__);
2142                         return -ENOPROTOOPT;
2143                 }
2144                 break;
2145         case IRLMP_HINTS_SET:
2146                 if (optlen < sizeof(int))
2147                         return -EINVAL;
2148
2149                 /* The input is really a (__u8 hints[2]), easier as an int */
2150                 if (get_user(opt, (int __user *)optval))
2151                         return -EFAULT;
2152
2153                 /* Unregister any old registration */
2154                 if (self->skey)
2155                         irlmp_unregister_service(self->skey);
2156
2157                 self->skey = irlmp_register_service((__u16) opt);
2158                 break;
2159         case IRLMP_HINT_MASK_SET:
2160                 /* As opposed to the previous case which set the hint bits
2161                  * that we advertise, this one set the filter we use when
2162                  * making a discovery (nodes which don't match any hint
2163                  * bit in the mask are not reported).
2164                  */
2165                 if (optlen < sizeof(int))
2166                         return -EINVAL;
2167
2168                 /* The input is really a (__u8 hints[2]), easier as an int */
2169                 if (get_user(opt, (int __user *)optval))
2170                         return -EFAULT;
2171
2172                 /* Set the new hint mask */
2173                 self->mask.word = (__u16) opt;
2174                 /* Mask out extension bits */
2175                 self->mask.word &= 0x7f7f;
2176                 /* Check if no bits */
2177                 if(!self->mask.word)
2178                         self->mask.word = 0xFFFF;
2179
2180                 break;
2181         default:
2182                 return -ENOPROTOOPT;
2183         }
2184         return 0;
2185 }
2186
2187 static int irda_setsockopt(struct socket *sock, int level, int optname,
2188                            char __user *optval, unsigned int optlen)
2189 {
2190         int err;
2191
2192         lock_kernel();
2193         err = __irda_setsockopt(sock, level, optname, optval, optlen);
2194         unlock_kernel();
2195
2196         return err;
2197 }
2198
2199 /*
2200  * Function irda_extract_ias_value(ias_opt, ias_value)
2201  *
2202  *    Translate internal IAS value structure to the user space representation
2203  *
2204  * The external representation of IAS values, as we exchange them with
2205  * user space program is quite different from the internal representation,
2206  * as stored in the IAS database (because we need a flat structure for
2207  * crossing kernel boundary).
2208  * This function transform the former in the latter. We also check
2209  * that the value type is valid.
2210  */
2211 static int irda_extract_ias_value(struct irda_ias_set *ias_opt,
2212                                   struct ias_value *ias_value)
2213 {
2214         /* Look at the type */
2215         switch (ias_value->type) {
2216         case IAS_INTEGER:
2217                 /* Copy the integer */
2218                 ias_opt->attribute.irda_attrib_int = ias_value->t.integer;
2219                 break;
2220         case IAS_OCT_SEQ:
2221                 /* Set length */
2222                 ias_opt->attribute.irda_attrib_octet_seq.len = ias_value->len;
2223                 /* Copy over */
2224                 memcpy(ias_opt->attribute.irda_attrib_octet_seq.octet_seq,
2225                        ias_value->t.oct_seq, ias_value->len);
2226                 break;
2227         case IAS_STRING:
2228                 /* Set length */
2229                 ias_opt->attribute.irda_attrib_string.len = ias_value->len;
2230                 ias_opt->attribute.irda_attrib_string.charset = ias_value->charset;
2231                 /* Copy over */
2232                 memcpy(ias_opt->attribute.irda_attrib_string.string,
2233                        ias_value->t.string, ias_value->len);
2234                 /* NULL terminate the string (avoid troubles) */
2235                 ias_opt->attribute.irda_attrib_string.string[ias_value->len] = '\0';
2236                 break;
2237         case IAS_MISSING:
2238         default :
2239                 return -EINVAL;
2240         }
2241
2242         /* Copy type over */
2243         ias_opt->irda_attrib_type = ias_value->type;
2244
2245         return 0;
2246 }
2247
2248 /*
2249  * Function irda_getsockopt (sock, level, optname, optval, optlen)
2250  */
2251 static int __irda_getsockopt(struct socket *sock, int level, int optname,
2252                            char __user *optval, int __user *optlen)
2253 {
2254         struct sock *sk = sock->sk;
2255         struct irda_sock *self = irda_sk(sk);
2256         struct irda_device_list list;
2257         struct irda_device_info *discoveries;
2258         struct irda_ias_set *   ias_opt;        /* IAS get/query params */
2259         struct ias_object *     ias_obj;        /* Object in IAS */
2260         struct ias_attrib *     ias_attr;       /* Attribute in IAS object */
2261         int daddr = DEV_ADDR_ANY;       /* Dest address for IAS queries */
2262         int val = 0;
2263         int len = 0;
2264         int err;
2265         int offset, total;
2266
2267         IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
2268
2269         if (level != SOL_IRLMP)
2270                 return -ENOPROTOOPT;
2271
2272         if (get_user(len, optlen))
2273                 return -EFAULT;
2274
2275         if(len < 0)
2276                 return -EINVAL;
2277
2278         switch (optname) {
2279         case IRLMP_ENUMDEVICES:
2280                 /* Ask lmp for the current discovery log */
2281                 discoveries = irlmp_get_discoveries(&list.len, self->mask.word,
2282                                                     self->nslots);
2283                 /* Check if the we got some results */
2284                 if (discoveries == NULL)
2285                         return -EAGAIN;         /* Didn't find any devices */
2286                 err = 0;
2287
2288                 /* Write total list length back to client */
2289                 if (copy_to_user(optval, &list,
2290                                  sizeof(struct irda_device_list) -
2291                                  sizeof(struct irda_device_info)))
2292                         err = -EFAULT;
2293
2294                 /* Offset to first device entry */
2295                 offset = sizeof(struct irda_device_list) -
2296                         sizeof(struct irda_device_info);
2297
2298                 /* Copy the list itself - watch for overflow */
2299                 if(list.len > 2048)
2300                 {
2301                         err = -EINVAL;
2302                         goto bed;
2303                 }
2304                 total = offset + (list.len * sizeof(struct irda_device_info));
2305                 if (total > len)
2306                         total = len;
2307                 if (copy_to_user(optval+offset, discoveries, total - offset))
2308                         err = -EFAULT;
2309
2310                 /* Write total number of bytes used back to client */
2311                 if (put_user(total, optlen))
2312                         err = -EFAULT;
2313 bed:
2314                 /* Free up our buffer */
2315                 kfree(discoveries);
2316                 if (err)
2317                         return err;
2318                 break;
2319         case IRLMP_MAX_SDU_SIZE:
2320                 val = self->max_data_size;
2321                 len = sizeof(int);
2322                 if (put_user(len, optlen))
2323                         return -EFAULT;
2324
2325                 if (copy_to_user(optval, &val, len))
2326                         return -EFAULT;
2327                 break;
2328         case IRLMP_IAS_GET:
2329                 /* The user want an object from our local IAS database.
2330                  * We just need to query the IAS and return the value
2331                  * that we found */
2332
2333                 /* Check that the user has allocated the right space for us */
2334                 if (len != sizeof(struct irda_ias_set))
2335                         return -EINVAL;
2336
2337                 ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
2338                 if (ias_opt == NULL)
2339                         return -ENOMEM;
2340
2341                 /* Copy query to the driver. */
2342                 if (copy_from_user(ias_opt, optval, len)) {
2343                         kfree(ias_opt);
2344                         return -EFAULT;
2345                 }
2346
2347                 /* Find the object we target.
2348                  * If the user gives us an empty string, we use the object
2349                  * associated with this socket. This will workaround
2350                  * duplicated class name - Jean II */
2351                 if(ias_opt->irda_class_name[0] == '\0')
2352                         ias_obj = self->ias_obj;
2353                 else
2354                         ias_obj = irias_find_object(ias_opt->irda_class_name);
2355                 if(ias_obj == (struct ias_object *) NULL) {
2356                         kfree(ias_opt);
2357                         return -EINVAL;
2358                 }
2359
2360                 /* Find the attribute (in the object) we target */
2361                 ias_attr = irias_find_attrib(ias_obj,
2362                                              ias_opt->irda_attrib_name);
2363                 if(ias_attr == (struct ias_attrib *) NULL) {
2364                         kfree(ias_opt);
2365                         return -EINVAL;
2366                 }
2367
2368                 /* Translate from internal to user structure */
2369                 err = irda_extract_ias_value(ias_opt, ias_attr->value);
2370                 if(err) {
2371                         kfree(ias_opt);
2372                         return err;
2373                 }
2374
2375                 /* Copy reply to the user */
2376                 if (copy_to_user(optval, ias_opt,
2377                                  sizeof(struct irda_ias_set))) {
2378                         kfree(ias_opt);
2379                         return -EFAULT;
2380                 }
2381                 /* Note : don't need to put optlen, we checked it */
2382                 kfree(ias_opt);
2383                 break;
2384         case IRLMP_IAS_QUERY:
2385                 /* The user want an object from a remote IAS database.
2386                  * We need to use IAP to query the remote database and
2387                  * then wait for the answer to come back. */
2388
2389                 /* Check that the user has allocated the right space for us */
2390                 if (len != sizeof(struct irda_ias_set))
2391                         return -EINVAL;
2392
2393                 ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
2394                 if (ias_opt == NULL)
2395                         return -ENOMEM;
2396
2397                 /* Copy query to the driver. */
2398                 if (copy_from_user(ias_opt, optval, len)) {
2399                         kfree(ias_opt);
2400                         return -EFAULT;
2401                 }
2402
2403                 /* At this point, there are two cases...
2404                  * 1) the socket is connected - that's the easy case, we
2405                  *      just query the device we are connected to...
2406                  * 2) the socket is not connected - the user doesn't want
2407                  *      to connect and/or may not have a valid service name
2408                  *      (so can't create a fake connection). In this case,
2409                  *      we assume that the user pass us a valid destination
2410                  *      address in the requesting structure...
2411                  */
2412                 if(self->daddr != DEV_ADDR_ANY) {
2413                         /* We are connected - reuse known daddr */
2414                         daddr = self->daddr;
2415                 } else {
2416                         /* We are not connected, we must specify a valid
2417                          * destination address */
2418                         daddr = ias_opt->daddr;
2419                         if((!daddr) || (daddr == DEV_ADDR_ANY)) {
2420                                 kfree(ias_opt);
2421                                 return -EINVAL;
2422                         }
2423                 }
2424
2425                 /* Check that we can proceed with IAP */
2426                 if (self->iriap) {
2427                         IRDA_WARNING("%s: busy with a previous query\n",
2428                                      __func__);
2429                         kfree(ias_opt);
2430                         return -EBUSY;
2431                 }
2432
2433                 self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self,
2434                                          irda_getvalue_confirm);
2435
2436                 if (self->iriap == NULL) {
2437                         kfree(ias_opt);
2438                         return -ENOMEM;
2439                 }
2440
2441                 /* Treat unexpected wakeup as disconnect */
2442                 self->errno = -EHOSTUNREACH;
2443
2444                 /* Query remote LM-IAS */
2445                 iriap_getvaluebyclass_request(self->iriap,
2446                                               self->saddr, daddr,
2447                                               ias_opt->irda_class_name,
2448                                               ias_opt->irda_attrib_name);
2449
2450                 /* Wait for answer, if not yet finished (or failed) */
2451                 if (wait_event_interruptible(self->query_wait,
2452                                              (self->iriap == NULL))) {
2453                         /* pending request uses copy of ias_opt-content
2454                          * we can free it regardless! */
2455                         kfree(ias_opt);
2456                         /* Treat signals as disconnect */
2457                         return -EHOSTUNREACH;
2458                 }
2459
2460                 /* Check what happened */
2461                 if (self->errno)
2462                 {
2463                         kfree(ias_opt);
2464                         /* Requested object/attribute doesn't exist */
2465                         if((self->errno == IAS_CLASS_UNKNOWN) ||
2466                            (self->errno == IAS_ATTRIB_UNKNOWN))
2467                                 return (-EADDRNOTAVAIL);
2468                         else
2469                                 return (-EHOSTUNREACH);
2470                 }
2471
2472                 /* Translate from internal to user structure */
2473                 err = irda_extract_ias_value(ias_opt, self->ias_result);
2474                 if (self->ias_result)
2475                         irias_delete_value(self->ias_result);
2476                 if (err) {
2477                         kfree(ias_opt);
2478                         return err;
2479                 }
2480
2481                 /* Copy reply to the user */
2482                 if (copy_to_user(optval, ias_opt,
2483                                  sizeof(struct irda_ias_set))) {
2484                         kfree(ias_opt);
2485                         return -EFAULT;
2486                 }
2487                 /* Note : don't need to put optlen, we checked it */
2488                 kfree(ias_opt);
2489                 break;
2490         case IRLMP_WAITDEVICE:
2491                 /* This function is just another way of seeing life ;-)
2492                  * IRLMP_ENUMDEVICES assumes that you have a static network,
2493                  * and that you just want to pick one of the devices present.
2494                  * On the other hand, in here we assume that no device is
2495                  * present and that at some point in the future a device will
2496                  * come into range. When this device arrive, we just wake
2497                  * up the caller, so that he has time to connect to it before
2498                  * the device goes away...
2499                  * Note : once the node has been discovered for more than a
2500                  * few second, it won't trigger this function, unless it
2501                  * goes away and come back changes its hint bits (so we
2502                  * might call it IRLMP_WAITNEWDEVICE).
2503                  */
2504
2505                 /* Check that the user is passing us an int */
2506                 if (len != sizeof(int))
2507                         return -EINVAL;
2508                 /* Get timeout in ms (max time we block the caller) */
2509                 if (get_user(val, (int __user *)optval))
2510                         return -EFAULT;
2511
2512                 /* Tell IrLMP we want to be notified */
2513                 irlmp_update_client(self->ckey, self->mask.word,
2514                                     irda_selective_discovery_indication,
2515                                     NULL, (void *) self);
2516
2517                 /* Do some discovery (and also return cached results) */
2518                 irlmp_discovery_request(self->nslots);
2519
2520                 /* Wait until a node is discovered */
2521                 if (!self->cachedaddr) {
2522                         int ret = 0;
2523
2524                         IRDA_DEBUG(1, "%s(), nothing discovered yet, going to sleep...\n", __func__);
2525
2526                         /* Set watchdog timer to expire in <val> ms. */
2527                         self->errno = 0;
2528                         setup_timer(&self->watchdog, irda_discovery_timeout,
2529                                         (unsigned long)self);
2530                         self->watchdog.expires = jiffies + (val * HZ/1000);
2531                         add_timer(&(self->watchdog));
2532
2533                         /* Wait for IR-LMP to call us back */
2534                         __wait_event_interruptible(self->query_wait,
2535                               (self->cachedaddr != 0 || self->errno == -ETIME),
2536                                                    ret);
2537
2538                         /* If watchdog is still activated, kill it! */
2539                         if(timer_pending(&(self->watchdog)))
2540                                 del_timer(&(self->watchdog));
2541
2542                         IRDA_DEBUG(1, "%s(), ...waking up !\n", __func__);
2543
2544                         if (ret != 0)
2545                                 return ret;
2546                 }
2547                 else
2548                         IRDA_DEBUG(1, "%s(), found immediately !\n",
2549                                    __func__);
2550
2551                 /* Tell IrLMP that we have been notified */
2552                 irlmp_update_client(self->ckey, self->mask.word,
2553                                     NULL, NULL, NULL);
2554
2555                 /* Check if the we got some results */
2556                 if (!self->cachedaddr)
2557                         return -EAGAIN;         /* Didn't find any devices */
2558                 daddr = self->cachedaddr;
2559                 /* Cleanup */
2560                 self->cachedaddr = 0;
2561
2562                 /* We return the daddr of the device that trigger the
2563                  * wakeup. As irlmp pass us only the new devices, we
2564                  * are sure that it's not an old device.
2565                  * If the user want more details, he should query
2566                  * the whole discovery log and pick one device...
2567                  */
2568                 if (put_user(daddr, (int __user *)optval))
2569                         return -EFAULT;
2570
2571                 break;
2572         default:
2573                 return -ENOPROTOOPT;
2574         }
2575
2576         return 0;
2577 }
2578
2579 static int irda_getsockopt(struct socket *sock, int level, int optname,
2580                            char __user *optval, int __user *optlen)
2581 {
2582         int err;
2583
2584         lock_kernel();
2585         err = __irda_getsockopt(sock, level, optname, optval, optlen);
2586         unlock_kernel();
2587
2588         return err;
2589 }
2590
2591 static const struct net_proto_family irda_family_ops = {
2592         .family = PF_IRDA,
2593         .create = irda_create,
2594         .owner  = THIS_MODULE,
2595 };
2596
2597 static const struct proto_ops irda_stream_ops = {
2598         .family =       PF_IRDA,
2599         .owner =        THIS_MODULE,
2600         .release =      irda_release,
2601         .bind =         irda_bind,
2602         .connect =      irda_connect,
2603         .socketpair =   sock_no_socketpair,
2604         .accept =       irda_accept,
2605         .getname =      irda_getname,
2606         .poll =         irda_poll,
2607         .ioctl =        irda_ioctl,
2608 #ifdef CONFIG_COMPAT
2609         .compat_ioctl = irda_compat_ioctl,
2610 #endif
2611         .listen =       irda_listen,
2612         .shutdown =     irda_shutdown,
2613         .setsockopt =   irda_setsockopt,
2614         .getsockopt =   irda_getsockopt,
2615         .sendmsg =      irda_sendmsg,
2616         .recvmsg =      irda_recvmsg_stream,
2617         .mmap =         sock_no_mmap,
2618         .sendpage =     sock_no_sendpage,
2619 };
2620
2621 static const struct proto_ops irda_seqpacket_ops = {
2622         .family =       PF_IRDA,
2623         .owner =        THIS_MODULE,
2624         .release =      irda_release,
2625         .bind =         irda_bind,
2626         .connect =      irda_connect,
2627         .socketpair =   sock_no_socketpair,
2628         .accept =       irda_accept,
2629         .getname =      irda_getname,
2630         .poll =         irda_datagram_poll,
2631         .ioctl =        irda_ioctl,
2632 #ifdef CONFIG_COMPAT
2633         .compat_ioctl = irda_compat_ioctl,
2634 #endif
2635         .listen =       irda_listen,
2636         .shutdown =     irda_shutdown,
2637         .setsockopt =   irda_setsockopt,
2638         .getsockopt =   irda_getsockopt,
2639         .sendmsg =      irda_sendmsg,
2640         .recvmsg =      irda_recvmsg_dgram,
2641         .mmap =         sock_no_mmap,
2642         .sendpage =     sock_no_sendpage,
2643 };
2644
2645 static const struct proto_ops irda_dgram_ops = {
2646         .family =       PF_IRDA,
2647         .owner =        THIS_MODULE,
2648         .release =      irda_release,
2649         .bind =         irda_bind,
2650         .connect =      irda_connect,
2651         .socketpair =   sock_no_socketpair,
2652         .accept =       irda_accept,
2653         .getname =      irda_getname,
2654         .poll =         irda_datagram_poll,
2655         .ioctl =        irda_ioctl,
2656 #ifdef CONFIG_COMPAT
2657         .compat_ioctl = irda_compat_ioctl,
2658 #endif
2659         .listen =       irda_listen,
2660         .shutdown =     irda_shutdown,
2661         .setsockopt =   irda_setsockopt,
2662         .getsockopt =   irda_getsockopt,
2663         .sendmsg =      irda_sendmsg_dgram,
2664         .recvmsg =      irda_recvmsg_dgram,
2665         .mmap =         sock_no_mmap,
2666         .sendpage =     sock_no_sendpage,
2667 };
2668
2669 #ifdef CONFIG_IRDA_ULTRA
2670 static const struct proto_ops irda_ultra_ops = {
2671         .family =       PF_IRDA,
2672         .owner =        THIS_MODULE,
2673         .release =      irda_release,
2674         .bind =         irda_bind,
2675         .connect =      sock_no_connect,
2676         .socketpair =   sock_no_socketpair,
2677         .accept =       sock_no_accept,
2678         .getname =      irda_getname,
2679         .poll =         irda_datagram_poll,
2680         .ioctl =        irda_ioctl,
2681 #ifdef CONFIG_COMPAT
2682         .compat_ioctl = irda_compat_ioctl,
2683 #endif
2684         .listen =       sock_no_listen,
2685         .shutdown =     irda_shutdown,
2686         .setsockopt =   irda_setsockopt,
2687         .getsockopt =   irda_getsockopt,
2688         .sendmsg =      irda_sendmsg_ultra,
2689         .recvmsg =      irda_recvmsg_dgram,
2690         .mmap =         sock_no_mmap,
2691         .sendpage =     sock_no_sendpage,
2692 };
2693 #endif /* CONFIG_IRDA_ULTRA */
2694
2695 /*
2696  * Function irsock_init (pro)
2697  *
2698  *    Initialize IrDA protocol
2699  *
2700  */
2701 int __init irsock_init(void)
2702 {
2703         int rc = proto_register(&irda_proto, 0);
2704
2705         if (rc == 0)
2706                 rc = sock_register(&irda_family_ops);
2707
2708         return rc;
2709 }
2710
2711 /*
2712  * Function irsock_cleanup (void)
2713  *
2714  *    Remove IrDA protocol
2715  *
2716  */
2717 void irsock_cleanup(void)
2718 {
2719         sock_unregister(PF_IRDA);
2720         proto_unregister(&irda_proto);
2721 }