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