net/atm/svc.c

   1 /* net/atm/svc.c - ATM SVC sockets */
   2
   3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
   4
   5
   6 #include <linux/string.h>
   7 #include <linux/net.h>          /* struct socket, struct proto_ops */
   8 #include <linux/errno.h>        /* error codes */
   9 #include <linux/kernel.h>       /* printk */
  10 #include <linux/skbuff.h>
  11 #include <linux/wait.h>
  12 #include <linux/sched.h>        /* jiffies and HZ */
  13 #include <linux/fcntl.h>        /* O_NONBLOCK */
  14 #include <linux/init.h>
  15 #include <linux/atm.h>          /* ATM stuff */
  16 #include <linux/atmsap.h>
  17 #include <linux/atmsvc.h>
  18 #include <linux/atmdev.h>
  19 #include <linux/bitops.h>
  20 #include <net/sock.h>           /* for sock_no_* */
  21 #include <asm/uaccess.h>
  22
  23 #include "resources.h"
  24 #include "common.h"             /* common for PVCs and SVCs */
  25 #include "signaling.h"
  26 #include "addr.h"
  27
  28
  29 #if 0
  30 #define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
  31 #else
  32 #define DPRINTK(format,args...)
  33 #endif
  34
  35
  36 static int svc_create(struct socket *sock,int protocol);
  37
  38
  39 /*
  40  * Note: since all this is still nicely synchronized with the signaling demon,
  41  *       there's no need to protect sleep loops with clis. If signaling is
  42  *       moved into the kernel, that would change.
  43  */
  44
  45
  46 static int svc_shutdown(struct socket *sock,int how)
  47 {
  48         return 0;
  49 }
  50
  51
  52 static void svc_disconnect(struct atm_vcc *vcc)
  53 {
  54         DEFINE_WAIT(wait);
  55         struct sk_buff *skb;
  56         struct sock *sk = sk_atm(vcc);
  57
  58         DPRINTK("svc_disconnect %p\n",vcc);
  59         if (test_bit(ATM_VF_REGIS,&vcc->flags)) {
  60                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
  61                 sigd_enq(vcc,as_close,NULL,NULL,NULL);
  62                 while (!test_bit(ATM_VF_RELEASED,&vcc->flags) && sigd) {
  63                         schedule();
  64                         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
  65                 }
  66                 finish_wait(sk->sk_sleep, &wait);
  67         }
  68         /* beware - socket is still in use by atmsigd until the last
  69            as_indicate has been answered */
  70         while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
  71                 atm_return(vcc, skb->truesize);
  72                 DPRINTK("LISTEN REL\n");
  73                 sigd_enq2(NULL,as_reject,vcc,NULL,NULL,&vcc->qos,0);
  74                 dev_kfree_skb(skb);
  75         }
  76         clear_bit(ATM_VF_REGIS, &vcc->flags);
  77         /* ... may retry later */
  78 }
  79
  80
  81 static int svc_release(struct socket *sock)
  82 {
  83         struct sock *sk = sock->sk;
  84         struct atm_vcc *vcc;
  85
  86         if (sk)  {
  87                 vcc = ATM_SD(sock);
  88                 DPRINTK("svc_release %p\n", vcc);
  89                 clear_bit(ATM_VF_READY, &vcc->flags);
  90                 /* VCC pointer is used as a reference, so we must not free it
  91                    (thereby subjecting it to re-use) before all pending connections
  92                    are closed */
  93                 svc_disconnect(vcc);
  94                 vcc_release(sock);
  95         }
  96         return 0;
  97 }
  98
  99
 100 static int svc_bind(struct socket *sock,struct sockaddr *sockaddr,
 101     int sockaddr_len)
 102 {
 103         DEFINE_WAIT(wait);
 104         struct sock *sk = sock->sk;
 105         struct sockaddr_atmsvc *addr;
 106         struct atm_vcc *vcc;
 107         int error;
 108
 109         if (sockaddr_len != sizeof(struct sockaddr_atmsvc))
 110                 return -EINVAL;
 111         lock_sock(sk);
 112         if (sock->state == SS_CONNECTED) {
 113                 error = -EISCONN;
 114                 goto out;
 115         }
 116         if (sock->state != SS_UNCONNECTED) {
 117                 error = -EINVAL;
 118                 goto out;
 119         }
 120         vcc = ATM_SD(sock);
 121         if (test_bit(ATM_VF_SESSION, &vcc->flags)) {
 122                 error = -EINVAL;
 123                 goto out;
 124         }
 125         addr = (struct sockaddr_atmsvc *) sockaddr;
 126         if (addr->sas_family != AF_ATMSVC) {
 127                 error = -EAFNOSUPPORT;
 128                 goto out;
 129         }
 130         clear_bit(ATM_VF_BOUND,&vcc->flags);
 131             /* failing rebind will kill old binding */
 132         /* @@@ check memory (de)allocation on rebind */
 133         if (!test_bit(ATM_VF_HASQOS,&vcc->flags)) {
 134                 error = -EBADFD;
 135                 goto out;
 136         }
 137         vcc->local = *addr;
 138         set_bit(ATM_VF_WAITING, &vcc->flags);
 139         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 140         sigd_enq(vcc,as_bind,NULL,NULL,&vcc->local);
 141         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 142                 schedule();
 143                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 144         }
 145         finish_wait(sk->sk_sleep, &wait);
 146         clear_bit(ATM_VF_REGIS,&vcc->flags); /* doesn't count */
 147         if (!sigd) {
 148                 error = -EUNATCH;
 149                 goto out;
 150         }
 151         if (!sk->sk_err)
 152                 set_bit(ATM_VF_BOUND,&vcc->flags);
 153         error = -sk->sk_err;
 154 out:
 155         release_sock(sk);
 156         return error;
 157 }
 158
 159
 160 static int svc_connect(struct socket *sock,struct sockaddr *sockaddr,
 161     int sockaddr_len,int flags)
 162 {
 163         DEFINE_WAIT(wait);
 164         struct sock *sk = sock->sk;
 165         struct sockaddr_atmsvc *addr;
 166         struct atm_vcc *vcc = ATM_SD(sock);
 167         int error;
 168
 169         DPRINTK("svc_connect %p\n",vcc);
 170         lock_sock(sk);
 171         if (sockaddr_len != sizeof(struct sockaddr_atmsvc)) {
 172                 error = -EINVAL;
 173                 goto out;
 174         }
 175
 176         switch (sock->state) {
 177         default:
 178                 error = -EINVAL;
 179                 goto out;
 180         case SS_CONNECTED:
 181                 error = -EISCONN;
 182                 goto out;
 183         case SS_CONNECTING:
 184                 if (test_bit(ATM_VF_WAITING, &vcc->flags)) {
 185                         error = -EALREADY;
 186                         goto out;
 187                 }
 188                 sock->state = SS_UNCONNECTED;
 189                 if (sk->sk_err) {
 190                         error = -sk->sk_err;
 191                         goto out;
 192                 }
 193                 break;
 194         case SS_UNCONNECTED:
 195                 addr = (struct sockaddr_atmsvc *) sockaddr;
 196                 if (addr->sas_family != AF_ATMSVC) {
 197                         error = -EAFNOSUPPORT;
 198                         goto out;
 199                 }
 200                 if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
 201                         error = -EBADFD;
 202                         goto out;
 203                 }
 204                 if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
 205                     vcc->qos.rxtp.traffic_class == ATM_ANYCLASS) {
 206                         error = -EINVAL;
 207                         goto out;
 208                 }
 209                 if (!vcc->qos.txtp.traffic_class &&
 210                     !vcc->qos.rxtp.traffic_class) {
 211                         error = -EINVAL;
 212                         goto out;
 213                 }
 214                 vcc->remote = *addr;
 215                 set_bit(ATM_VF_WAITING, &vcc->flags);
 216                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 217                 sigd_enq(vcc,as_connect,NULL,NULL,&vcc->remote);
 218                 if (flags & O_NONBLOCK) {
 219                         finish_wait(sk->sk_sleep, &wait);
 220                         sock->state = SS_CONNECTING;
 221                         error = -EINPROGRESS;
 222                         goto out;
 223                 }
 224                 error = 0;
 225                 while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 226                         schedule();
 227                         if (!signal_pending(current)) {
 228                                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 229                                 continue;
 230                         }
 231                         DPRINTK("*ABORT*\n");
 232                         /*
 233                          * This is tricky:
 234                          *   Kernel ---close--> Demon
 235                          *   Kernel <--close--- Demon
 236                          * or
 237                          *   Kernel ---close--> Demon
 238                          *   Kernel <--error--- Demon
 239                          * or
 240                          *   Kernel ---close--> Demon
 241                          *   Kernel <--okay---- Demon
 242                          *   Kernel <--close--- Demon
 243                          */
 244                         sigd_enq(vcc,as_close,NULL,NULL,NULL);
 245                         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 246                                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 247                                 schedule();
 248                         }
 249                         if (!sk->sk_err)
 250                                 while (!test_bit(ATM_VF_RELEASED,&vcc->flags)
 251                                     && sigd) {
 252                                         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 253                                         schedule();
 254                                 }
 255                         clear_bit(ATM_VF_REGIS,&vcc->flags);
 256                         clear_bit(ATM_VF_RELEASED,&vcc->flags);
 257                         clear_bit(ATM_VF_CLOSE,&vcc->flags);
 258                             /* we're gone now but may connect later */
 259                         error = -EINTR;
 260                         break;
 261                 }
 262                 finish_wait(sk->sk_sleep, &wait);
 263                 if (error)
 264                         goto out;
 265                 if (!sigd) {
 266                         error = -EUNATCH;
 267                         goto out;
 268                 }
 269                 if (sk->sk_err) {
 270                         error = -sk->sk_err;
 271                         goto out;
 272                 }
 273         }
 274 /*
 275  * Not supported yet
 276  *
 277  * #ifndef CONFIG_SINGLE_SIGITF
 278  */
 279         vcc->qos.txtp.max_pcr = SELECT_TOP_PCR(vcc->qos.txtp);
 280         vcc->qos.txtp.pcr = 0;
 281         vcc->qos.txtp.min_pcr = 0;
 282 /*
 283  * #endif
 284  */
 285         if (!(error = vcc_connect(sock, vcc->itf, vcc->vpi, vcc->vci)))
 286                 sock->state = SS_CONNECTED;
 287         else
 288                 (void) svc_disconnect(vcc);
 289 out:
 290         release_sock(sk);
 291         return error;
 292 }
 293
 294
 295 static int svc_listen(struct socket *sock,int backlog)
 296 {
 297         DEFINE_WAIT(wait);
 298         struct sock *sk = sock->sk;
 299         struct atm_vcc *vcc = ATM_SD(sock);
 300         int error;
 301
 302         DPRINTK("svc_listen %p\n",vcc);
 303         lock_sock(sk);
 304         /* let server handle listen on unbound sockets */
 305         if (test_bit(ATM_VF_SESSION,&vcc->flags)) {
 306                 error = -EINVAL;
 307                 goto out;
 308         }
 309         set_bit(ATM_VF_WAITING, &vcc->flags);
 310         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 311         sigd_enq(vcc,as_listen,NULL,NULL,&vcc->local);
 312         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 313                 schedule();
 314                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 315         }
 316         finish_wait(sk->sk_sleep, &wait);
 317         if (!sigd) {
 318                 error = -EUNATCH;
 319                 goto out;
 320         }
 321         set_bit(ATM_VF_LISTEN,&vcc->flags);
 322         sk->sk_max_ack_backlog = backlog > 0 ? backlog : ATM_BACKLOG_DEFAULT;
 323         error = -sk->sk_err;
 324 out:
 325         release_sock(sk);
 326         return error;
 327 }
 328
 329
 330 static int svc_accept(struct socket *sock,struct socket *newsock,int flags)
 331 {
 332         struct sock *sk = sock->sk;
 333         struct sk_buff *skb;
 334         struct atmsvc_msg *msg;
 335         struct atm_vcc *old_vcc = ATM_SD(sock);
 336         struct atm_vcc *new_vcc;
 337         int error;
 338
 339         lock_sock(sk);
 340
 341         error = svc_create(newsock,0);
 342         if (error)
 343                 goto out;
 344
 345         new_vcc = ATM_SD(newsock);
 346
 347         DPRINTK("svc_accept %p -> %p\n",old_vcc,new_vcc);
 348         while (1) {
 349                 DEFINE_WAIT(wait);
 350
 351                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 352                 while (!(skb = skb_dequeue(&sk->sk_receive_queue)) &&
 353                        sigd) {
 354                         if (test_bit(ATM_VF_RELEASED,&old_vcc->flags)) break;
 355                         if (test_bit(ATM_VF_CLOSE,&old_vcc->flags)) {
 356                                 error = -sk->sk_err;
 357                                 break;
 358                         }
 359                         if (flags & O_NONBLOCK) {
 360                                 error = -EAGAIN;
 361                                 break;
 362                         }
 363                         release_sock(sk);
 364                         schedule();
 365                         lock_sock(sk);
 366                         if (signal_pending(current)) {
 367                                 error = -ERESTARTSYS;
 368                                 break;
 369                         }
 370                         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 371                 }
 372                 finish_wait(sk->sk_sleep, &wait);
 373                 if (error)
 374                         goto out;
 375                 if (!skb) {
 376                         error = -EUNATCH;
 377                         goto out;
 378                 }
 379                 msg = (struct atmsvc_msg *) skb->data;
 380                 new_vcc->qos = msg->qos;
 381                 set_bit(ATM_VF_HASQOS,&new_vcc->flags);
 382                 new_vcc->remote = msg->svc;
 383                 new_vcc->local = msg->local;
 384                 new_vcc->sap = msg->sap;
 385                 error = vcc_connect(newsock, msg->pvc.sap_addr.itf,
 386                                     msg->pvc.sap_addr.vpi, msg->pvc.sap_addr.vci);
 387                 dev_kfree_skb(skb);
 388                 sk->sk_ack_backlog--;
 389                 if (error) {
 390                         sigd_enq2(NULL,as_reject,old_vcc,NULL,NULL,
 391                             &old_vcc->qos,error);
 392                         error = error == -EAGAIN ? -EBUSY : error;
 393                         goto out;
 394                 }
 395                 /* wait should be short, so we ignore the non-blocking flag */
 396                 set_bit(ATM_VF_WAITING, &new_vcc->flags);
 397                 prepare_to_wait(sk_atm(new_vcc)->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 398                 sigd_enq(new_vcc,as_accept,old_vcc,NULL,NULL);
 399                 while (test_bit(ATM_VF_WAITING, &new_vcc->flags) && sigd) {
 400                         release_sock(sk);
 401                         schedule();
 402                         lock_sock(sk);
 403                         prepare_to_wait(sk_atm(new_vcc)->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 404                 }
 405                 finish_wait(sk_atm(new_vcc)->sk_sleep, &wait);
 406                 if (!sigd) {
 407                         error = -EUNATCH;
 408                         goto out;
 409                 }
 410                 if (!sk_atm(new_vcc)->sk_err)
 411                         break;
 412                 if (sk_atm(new_vcc)->sk_err != ERESTARTSYS) {
 413                         error = -sk_atm(new_vcc)->sk_err;
 414                         goto out;
 415                 }
 416         }
 417         newsock->state = SS_CONNECTED;
 418 out:
 419         release_sock(sk);
 420         return error;
 421 }
 422
 423
 424 static int svc_getname(struct socket *sock,struct sockaddr *sockaddr,
 425     int *sockaddr_len,int peer)
 426 {
 427         struct sockaddr_atmsvc *addr;
 428
 429         *sockaddr_len = sizeof(struct sockaddr_atmsvc);
 430         addr = (struct sockaddr_atmsvc *) sockaddr;
 431         memcpy(addr,peer ? &ATM_SD(sock)->remote : &ATM_SD(sock)->local,
 432             sizeof(struct sockaddr_atmsvc));
 433         return 0;
 434 }
 435
 436
 437 int svc_change_qos(struct atm_vcc *vcc,struct atm_qos *qos)
 438 {
 439         struct sock *sk = sk_atm(vcc);
 440         DEFINE_WAIT(wait);
 441
 442         set_bit(ATM_VF_WAITING, &vcc->flags);
 443         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 444         sigd_enq2(vcc,as_modify,NULL,NULL,&vcc->local,qos,0);
 445         while (test_bit(ATM_VF_WAITING, &vcc->flags) &&
 446                !test_bit(ATM_VF_RELEASED, &vcc->flags) && sigd) {
 447                 schedule();
 448                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 449         }
 450         finish_wait(sk->sk_sleep, &wait);
 451         if (!sigd) return -EUNATCH;
 452         return -sk->sk_err;
 453 }
 454
 455
 456 static int svc_setsockopt(struct socket *sock, int level, int optname,
 457                           char __user *optval, int optlen)
 458 {
 459         struct sock *sk = sock->sk;
 460         struct atm_vcc *vcc = ATM_SD(sock);
 461         int value, error = 0;
 462
 463         lock_sock(sk);
 464         switch (optname) {
 465                 case SO_ATMSAP:
 466                         if (level != SOL_ATM || optlen != sizeof(struct atm_sap)) {
 467                                 error = -EINVAL;
 468                                 goto out;
 469                         }
 470                         if (copy_from_user(&vcc->sap, optval, optlen)) {
 471                                 error = -EFAULT;
 472                                 goto out;
 473                         }
 474                         set_bit(ATM_VF_HASSAP, &vcc->flags);
 475                         break;
 476                 case SO_MULTIPOINT:
 477                         if (level != SOL_ATM || optlen != sizeof(int)) {
 478                                 error = -EINVAL;
 479                                 goto out;
 480                         }
 481                         if (get_user(value, (int __user *) optval)) {
 482                                 error = -EFAULT;
 483                                 goto out;
 484                         }
 485                         if (value == 1) {
 486                                 set_bit(ATM_VF_SESSION, &vcc->flags);
 487                         } else if (value == 0) {
 488                                 clear_bit(ATM_VF_SESSION, &vcc->flags);
 489                         } else {
 490                                 error = -EINVAL;
 491                         }
 492                         break;
 493                 default:
 494                         error = vcc_setsockopt(sock, level, optname,
 495                                                optval, optlen);
 496         }
 497
 498 out:
 499         release_sock(sk);
 500         return error;
 501 }
 502
 503
 504 static int svc_getsockopt(struct socket *sock,int level,int optname,
 505     char __user *optval,int __user *optlen)
 506 {
 507         struct sock *sk = sock->sk;
 508         int error = 0, len;
 509
 510         lock_sock(sk);
 511         if (!__SO_LEVEL_MATCH(optname, level) || optname != SO_ATMSAP) {
 512                 error = vcc_getsockopt(sock, level, optname, optval, optlen);
 513                 goto out;
 514         }
 515         if (get_user(len, optlen)) {
 516                 error = -EFAULT;
 517                 goto out;
 518         }
 519         if (len != sizeof(struct atm_sap)) {
 520                 error = -EINVAL;
 521                 goto out;
 522         }
 523         if (copy_to_user(optval, &ATM_SD(sock)->sap, sizeof(struct atm_sap))) {
 524                 error = -EFAULT;
 525                 goto out;
 526         }
 527 out:
 528         release_sock(sk);
 529         return error;
 530 }
 531
 532
 533 static int svc_addparty(struct socket *sock, struct sockaddr *sockaddr,
 534                         int sockaddr_len, int flags)
 535 {
 536         DEFINE_WAIT(wait);
 537         struct sock *sk = sock->sk;
 538         struct atm_vcc *vcc = ATM_SD(sock);
 539         int error;
 540
 541         lock_sock(sk);
 542         set_bit(ATM_VF_WAITING, &vcc->flags);
 543         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 544         sigd_enq(vcc, as_addparty, NULL, NULL,
 545                  (struct sockaddr_atmsvc *) sockaddr);
 546         if (flags & O_NONBLOCK) {
 547                 finish_wait(sk->sk_sleep, &wait);
 548                 error = -EINPROGRESS;
 549                 goto out;
 550         }
 551         DPRINTK("svc_addparty added wait queue\n");
 552         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 553                 schedule();
 554                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 555         }
 556         finish_wait(sk->sk_sleep, &wait);
 557         error = xchg(&sk->sk_err_soft, 0);
 558 out:
 559         release_sock(sk);
 560         return error;
 561 }
 562
 563
 564 static int svc_dropparty(struct socket *sock, int ep_ref)
 565 {
 566         DEFINE_WAIT(wait);
 567         struct sock *sk = sock->sk;
 568         struct atm_vcc *vcc = ATM_SD(sock);
 569         int error;
 570
 571         lock_sock(sk);
 572         set_bit(ATM_VF_WAITING, &vcc->flags);
 573         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 574         sigd_enq2(vcc, as_dropparty, NULL, NULL, NULL, NULL, ep_ref);
 575         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 576                 schedule();
 577                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 578         }
 579         finish_wait(sk->sk_sleep, &wait);
 580         if (!sigd) {
 581                 error = -EUNATCH;
 582                 goto out;
 583         }
 584         error = xchg(&sk->sk_err_soft, 0);
 585 out:
 586         release_sock(sk);
 587         return error;
 588 }
 589
 590
 591 static int svc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 592 {
 593         int error, ep_ref;
 594         struct sockaddr_atmsvc sa;
 595         struct atm_vcc *vcc = ATM_SD(sock);
 596
 597         switch (cmd) {
 598                 case ATM_ADDPARTY:
 599                         if (!test_bit(ATM_VF_SESSION, &vcc->flags))
 600                                 return -EINVAL;
 601                         if (copy_from_user(&sa, (void __user *) arg, sizeof(sa)))
 602                                 return -EFAULT;
 603                         error = svc_addparty(sock, (struct sockaddr *) &sa, sizeof(sa), 0);
 604                         break;
 605                 case ATM_DROPPARTY:
 606                         if (!test_bit(ATM_VF_SESSION, &vcc->flags))
 607                                 return -EINVAL;
 608                         if (copy_from_user(&ep_ref, (void __user *) arg, sizeof(int)))
 609                                 return -EFAULT;
 610                         error = svc_dropparty(sock, ep_ref);
 611                         break;
 612                 default:
 613                         error = vcc_ioctl(sock, cmd, arg);
 614         }
 615
 616         return error;
 617 }
 618
 619 static struct proto_ops svc_proto_ops = {
 620         .family =       PF_ATMSVC,
 621         .owner =        THIS_MODULE,
 622
 623         .release =      svc_release,
 624         .bind =         svc_bind,
 625         .connect =      svc_connect,
 626         .socketpair =   sock_no_socketpair,
 627         .accept =       svc_accept,
 628         .getname =      svc_getname,
 629         .poll =         vcc_poll,
 630         .ioctl =        svc_ioctl,
 631         .listen =       svc_listen,
 632         .shutdown =     svc_shutdown,
 633         .setsockopt =   svc_setsockopt,
 634         .getsockopt =   svc_getsockopt,
 635         .sendmsg =      vcc_sendmsg,
 636         .recvmsg =      vcc_recvmsg,
 637         .mmap =         sock_no_mmap,
 638         .sendpage =     sock_no_sendpage,
 639 };
 640
 641
 642 static int svc_create(struct socket *sock,int protocol)
 643 {
 644         int error;
 645
 646         sock->ops = &svc_proto_ops;
 647         error = vcc_create(sock, protocol, AF_ATMSVC);
 648         if (error) return error;
 649         ATM_SD(sock)->local.sas_family = AF_ATMSVC;
 650         ATM_SD(sock)->remote.sas_family = AF_ATMSVC;
 651         return 0;
 652 }
 653
 654
 655 static struct net_proto_family svc_family_ops = {
 656         .family = PF_ATMSVC,
 657         .create = svc_create,
 658         .owner = THIS_MODULE,
 659 };
 660
 661
 662 /*
 663  *      Initialize the ATM SVC protocol family
 664  */
 665
 666 int __init atmsvc_init(void)
 667 {
 668         return sock_register(&svc_family_ops);
 669 }
 670
 671 void atmsvc_exit(void)
 672 {
 673         sock_unregister(PF_ATMSVC);
 674 }