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         addr = (struct sockaddr_atmsvc *) sockaddr;
 122         if (addr->sas_family != AF_ATMSVC) {
 123                 error = -EAFNOSUPPORT;
 124                 goto out;
 125         }
 126         clear_bit(ATM_VF_BOUND,&vcc->flags);
 127             /* failing rebind will kill old binding */
 128         /* @@@ check memory (de)allocation on rebind */
 129         if (!test_bit(ATM_VF_HASQOS,&vcc->flags)) {
 130                 error = -EBADFD;
 131                 goto out;
 132         }
 133         vcc->local = *addr;
 134         set_bit(ATM_VF_WAITING, &vcc->flags);
 135         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 136         sigd_enq(vcc,as_bind,NULL,NULL,&vcc->local);
 137         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 138                 schedule();
 139                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 140         }
 141         finish_wait(sk->sk_sleep, &wait);
 142         clear_bit(ATM_VF_REGIS,&vcc->flags); /* doesn't count */
 143         if (!sigd) {
 144                 error = -EUNATCH;
 145                 goto out;
 146         }
 147         if (!sk->sk_err)
 148                 set_bit(ATM_VF_BOUND,&vcc->flags);
 149         error = -sk->sk_err;
 150 out:
 151         release_sock(sk);
 152         return error;
 153 }
 154
 155
 156 static int svc_connect(struct socket *sock,struct sockaddr *sockaddr,
 157     int sockaddr_len,int flags)
 158 {
 159         DEFINE_WAIT(wait);
 160         struct sock *sk = sock->sk;
 161         struct sockaddr_atmsvc *addr;
 162         struct atm_vcc *vcc = ATM_SD(sock);
 163         int error;
 164
 165         DPRINTK("svc_connect %p\n",vcc);
 166         lock_sock(sk);
 167         if (sockaddr_len != sizeof(struct sockaddr_atmsvc)) {
 168                 error = -EINVAL;
 169                 goto out;
 170         }
 171
 172         switch (sock->state) {
 173         default:
 174                 error = -EINVAL;
 175                 goto out;
 176         case SS_CONNECTED:
 177                 error = -EISCONN;
 178                 goto out;
 179         case SS_CONNECTING:
 180                 if (test_bit(ATM_VF_WAITING, &vcc->flags)) {
 181                         error = -EALREADY;
 182                         goto out;
 183                 }
 184                 sock->state = SS_UNCONNECTED;
 185                 if (sk->sk_err) {
 186                         error = -sk->sk_err;
 187                         goto out;
 188                 }
 189                 break;
 190         case SS_UNCONNECTED:
 191                 addr = (struct sockaddr_atmsvc *) sockaddr;
 192                 if (addr->sas_family != AF_ATMSVC) {
 193                         error = -EAFNOSUPPORT;
 194                         goto out;
 195                 }
 196                 if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
 197                         error = -EBADFD;
 198                         goto out;
 199                 }
 200                 if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
 201                     vcc->qos.rxtp.traffic_class == ATM_ANYCLASS) {
 202                         error = -EINVAL;
 203                         goto out;
 204                 }
 205                 if (!vcc->qos.txtp.traffic_class &&
 206                     !vcc->qos.rxtp.traffic_class) {
 207                         error = -EINVAL;
 208                         goto out;
 209                 }
 210                 vcc->remote = *addr;
 211                 set_bit(ATM_VF_WAITING, &vcc->flags);
 212                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 213                 sigd_enq(vcc,as_connect,NULL,NULL,&vcc->remote);
 214                 if (flags & O_NONBLOCK) {
 215                         finish_wait(sk->sk_sleep, &wait);
 216                         sock->state = SS_CONNECTING;
 217                         error = -EINPROGRESS;
 218                         goto out;
 219                 }
 220                 error = 0;
 221                 while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 222                         schedule();
 223                         if (!signal_pending(current)) {
 224                                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 225                                 continue;
 226                         }
 227                         DPRINTK("*ABORT*\n");
 228                         /*
 229                          * This is tricky:
 230                          *   Kernel ---close--> Demon
 231                          *   Kernel <--close--- Demon
 232                          * or
 233                          *   Kernel ---close--> Demon
 234                          *   Kernel <--error--- Demon
 235                          * or
 236                          *   Kernel ---close--> Demon
 237                          *   Kernel <--okay---- Demon
 238                          *   Kernel <--close--- Demon
 239                          */
 240                         sigd_enq(vcc,as_close,NULL,NULL,NULL);
 241                         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 242                                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 243                                 schedule();
 244                         }
 245                         if (!sk->sk_err)
 246                                 while (!test_bit(ATM_VF_RELEASED,&vcc->flags)
 247                                     && sigd) {
 248                                         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 249                                         schedule();
 250                                 }
 251                         clear_bit(ATM_VF_REGIS,&vcc->flags);
 252                         clear_bit(ATM_VF_RELEASED,&vcc->flags);
 253                         clear_bit(ATM_VF_CLOSE,&vcc->flags);
 254                             /* we're gone now but may connect later */
 255                         error = -EINTR;
 256                         break;
 257                 }
 258                 finish_wait(sk->sk_sleep, &wait);
 259                 if (error)
 260                         goto out;
 261                 if (!sigd) {
 262                         error = -EUNATCH;
 263                         goto out;
 264                 }
 265                 if (sk->sk_err) {
 266                         error = -sk->sk_err;
 267                         goto out;
 268                 }
 269         }
 270 /*
 271  * Not supported yet
 272  *
 273  * #ifndef CONFIG_SINGLE_SIGITF
 274  */
 275         vcc->qos.txtp.max_pcr = SELECT_TOP_PCR(vcc->qos.txtp);
 276         vcc->qos.txtp.pcr = 0;
 277         vcc->qos.txtp.min_pcr = 0;
 278 /*
 279  * #endif
 280  */
 281         if (!(error = vcc_connect(sock, vcc->itf, vcc->vpi, vcc->vci)))
 282                 sock->state = SS_CONNECTED;
 283         else
 284                 (void) svc_disconnect(vcc);
 285 out:
 286         release_sock(sk);
 287         return error;
 288 }
 289
 290
 291 static int svc_listen(struct socket *sock,int backlog)
 292 {
 293         DEFINE_WAIT(wait);
 294         struct sock *sk = sock->sk;
 295         struct atm_vcc *vcc = ATM_SD(sock);
 296         int error;
 297
 298         DPRINTK("svc_listen %p\n",vcc);
 299         lock_sock(sk);
 300         /* let server handle listen on unbound sockets */
 301         if (test_bit(ATM_VF_SESSION,&vcc->flags)) {
 302                 error = -EINVAL;
 303                 goto out;
 304         }
 305         vcc_insert_socket(sk);
 306         set_bit(ATM_VF_WAITING, &vcc->flags);
 307         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 308         sigd_enq(vcc,as_listen,NULL,NULL,&vcc->local);
 309         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 310                 schedule();
 311                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 312         }
 313         finish_wait(sk->sk_sleep, &wait);
 314         if (!sigd) {
 315                 error = -EUNATCH;
 316                 goto out;
 317         }
 318         set_bit(ATM_VF_LISTEN,&vcc->flags);
 319         sk->sk_max_ack_backlog = backlog > 0 ? backlog : ATM_BACKLOG_DEFAULT;
 320         error = -sk->sk_err;
 321 out:
 322         release_sock(sk);
 323         return error;
 324 }
 325
 326
 327 static int svc_accept(struct socket *sock,struct socket *newsock,int flags)
 328 {
 329         struct sock *sk = sock->sk;
 330         struct sk_buff *skb;
 331         struct atmsvc_msg *msg;
 332         struct atm_vcc *old_vcc = ATM_SD(sock);
 333         struct atm_vcc *new_vcc;
 334         int error;
 335
 336         lock_sock(sk);
 337
 338         error = svc_create(newsock,0);
 339         if (error)
 340                 goto out;
 341
 342         new_vcc = ATM_SD(newsock);
 343
 344         DPRINTK("svc_accept %p -> %p\n",old_vcc,new_vcc);
 345         while (1) {
 346                 DEFINE_WAIT(wait);
 347
 348                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 349                 while (!(skb = skb_dequeue(&sk->sk_receive_queue)) &&
 350                        sigd) {
 351                         if (test_bit(ATM_VF_RELEASED,&old_vcc->flags)) break;
 352                         if (test_bit(ATM_VF_CLOSE,&old_vcc->flags)) {
 353                                 error = -sk->sk_err;
 354                                 break;
 355                         }
 356                         if (flags & O_NONBLOCK) {
 357                                 error = -EAGAIN;
 358                                 break;
 359                         }
 360                         release_sock(sk);
 361                         schedule();
 362                         lock_sock(sk);
 363                         if (signal_pending(current)) {
 364                                 error = -ERESTARTSYS;
 365                                 break;
 366                         }
 367                         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 368                 }
 369                 finish_wait(sk->sk_sleep, &wait);
 370                 if (error)
 371                         goto out;
 372                 if (!skb) {
 373                         error = -EUNATCH;
 374                         goto out;
 375                 }
 376                 msg = (struct atmsvc_msg *) skb->data;
 377                 new_vcc->qos = msg->qos;
 378                 set_bit(ATM_VF_HASQOS,&new_vcc->flags);
 379                 new_vcc->remote = msg->svc;
 380                 new_vcc->local = msg->local;
 381                 new_vcc->sap = msg->sap;
 382                 error = vcc_connect(newsock, msg->pvc.sap_addr.itf,
 383                                     msg->pvc.sap_addr.vpi, msg->pvc.sap_addr.vci);
 384                 dev_kfree_skb(skb);
 385                 sk->sk_ack_backlog--;
 386                 if (error) {
 387                         sigd_enq2(NULL,as_reject,old_vcc,NULL,NULL,
 388                             &old_vcc->qos,error);
 389                         error = error == -EAGAIN ? -EBUSY : error;
 390                         goto out;
 391                 }
 392                 /* wait should be short, so we ignore the non-blocking flag */
 393                 set_bit(ATM_VF_WAITING, &new_vcc->flags);
 394                 prepare_to_wait(sk_atm(new_vcc)->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 395                 sigd_enq(new_vcc,as_accept,old_vcc,NULL,NULL);
 396                 while (test_bit(ATM_VF_WAITING, &new_vcc->flags) && sigd) {
 397                         release_sock(sk);
 398                         schedule();
 399                         lock_sock(sk);
 400                         prepare_to_wait(sk_atm(new_vcc)->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 401                 }
 402                 finish_wait(sk_atm(new_vcc)->sk_sleep, &wait);
 403                 if (!sigd) {
 404                         error = -EUNATCH;
 405                         goto out;
 406                 }
 407                 if (!sk_atm(new_vcc)->sk_err)
 408                         break;
 409                 if (sk_atm(new_vcc)->sk_err != ERESTARTSYS) {
 410                         error = -sk_atm(new_vcc)->sk_err;
 411                         goto out;
 412                 }
 413         }
 414         newsock->state = SS_CONNECTED;
 415 out:
 416         release_sock(sk);
 417         return error;
 418 }
 419
 420
 421 static int svc_getname(struct socket *sock,struct sockaddr *sockaddr,
 422     int *sockaddr_len,int peer)
 423 {
 424         struct sockaddr_atmsvc *addr;
 425
 426         *sockaddr_len = sizeof(struct sockaddr_atmsvc);
 427         addr = (struct sockaddr_atmsvc *) sockaddr;
 428         memcpy(addr,peer ? &ATM_SD(sock)->remote : &ATM_SD(sock)->local,
 429             sizeof(struct sockaddr_atmsvc));
 430         return 0;
 431 }
 432
 433
 434 int svc_change_qos(struct atm_vcc *vcc,struct atm_qos *qos)
 435 {
 436         struct sock *sk = sk_atm(vcc);
 437         DEFINE_WAIT(wait);
 438
 439         set_bit(ATM_VF_WAITING, &vcc->flags);
 440         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 441         sigd_enq2(vcc,as_modify,NULL,NULL,&vcc->local,qos,0);
 442         while (test_bit(ATM_VF_WAITING, &vcc->flags) &&
 443                !test_bit(ATM_VF_RELEASED, &vcc->flags) && sigd) {
 444                 schedule();
 445                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
 446         }
 447         finish_wait(sk->sk_sleep, &wait);
 448         if (!sigd) return -EUNATCH;
 449         return -sk->sk_err;
 450 }
 451
 452
 453 static int svc_setsockopt(struct socket *sock, int level, int optname,
 454                           char __user *optval, int optlen)
 455 {
 456         struct sock *sk = sock->sk;
 457         struct atm_vcc *vcc = ATM_SD(sock);
 458         int value, error = 0;
 459
 460         lock_sock(sk);
 461         switch (optname) {
 462                 case SO_ATMSAP:
 463                         if (level != SOL_ATM || optlen != sizeof(struct atm_sap)) {
 464                                 error = -EINVAL;
 465                                 goto out;
 466                         }
 467                         if (copy_from_user(&vcc->sap, optval, optlen)) {
 468                                 error = -EFAULT;
 469                                 goto out;
 470                         }
 471                         set_bit(ATM_VF_HASSAP, &vcc->flags);
 472                         break;
 473                 case SO_MULTIPOINT:
 474                         if (level != SOL_ATM || optlen != sizeof(int)) {
 475                                 error = -EINVAL;
 476                                 goto out;
 477                         }
 478                         if (get_user(value, (int __user *) optval)) {
 479                                 error = -EFAULT;
 480                                 goto out;
 481                         }
 482                         if (value == 1) {
 483                                 set_bit(ATM_VF_SESSION, &vcc->flags);
 484                         } else if (value == 0) {
 485                                 clear_bit(ATM_VF_SESSION, &vcc->flags);
 486                         } else {
 487                                 error = -EINVAL;
 488                         }
 489                         break;
 490                 default:
 491                         error = vcc_setsockopt(sock, level, optname,
 492                                                optval, optlen);
 493         }
 494
 495 out:
 496         release_sock(sk);
 497         return error;
 498 }
 499
 500
 501 static int svc_getsockopt(struct socket *sock,int level,int optname,
 502     char __user *optval,int __user *optlen)
 503 {
 504         struct sock *sk = sock->sk;
 505         int error = 0, len;
 506
 507         lock_sock(sk);
 508         if (!__SO_LEVEL_MATCH(optname, level) || optname != SO_ATMSAP) {
 509                 error = vcc_getsockopt(sock, level, optname, optval, optlen);
 510                 goto out;
 511         }
 512         if (get_user(len, optlen)) {
 513                 error = -EFAULT;
 514                 goto out;
 515         }
 516         if (len != sizeof(struct atm_sap)) {
 517                 error = -EINVAL;
 518                 goto out;
 519         }
 520         if (copy_to_user(optval, &ATM_SD(sock)->sap, sizeof(struct atm_sap))) {
 521                 error = -EFAULT;
 522                 goto out;
 523         }
 524 out:
 525         release_sock(sk);
 526         return error;
 527 }
 528
 529
 530 static int svc_addparty(struct socket *sock, struct sockaddr *sockaddr,
 531                         int sockaddr_len, int flags)
 532 {
 533         DEFINE_WAIT(wait);
 534         struct sock *sk = sock->sk;
 535         struct atm_vcc *vcc = ATM_SD(sock);
 536         int error;
 537
 538         lock_sock(sk);
 539         set_bit(ATM_VF_WAITING, &vcc->flags);
 540         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 541         sigd_enq(vcc, as_addparty, NULL, NULL,
 542                  (struct sockaddr_atmsvc *) sockaddr);
 543         if (flags & O_NONBLOCK) {
 544                 finish_wait(sk->sk_sleep, &wait);
 545                 error = -EINPROGRESS;
 546                 goto out;
 547         }
 548         DPRINTK("svc_addparty added wait queue\n");
 549         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 550                 schedule();
 551                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 552         }
 553         finish_wait(sk->sk_sleep, &wait);
 554         error = xchg(&sk->sk_err_soft, 0);
 555 out:
 556         release_sock(sk);
 557         return error;
 558 }
 559
 560
 561 static int svc_dropparty(struct socket *sock, int ep_ref)
 562 {
 563         DEFINE_WAIT(wait);
 564         struct sock *sk = sock->sk;
 565         struct atm_vcc *vcc = ATM_SD(sock);
 566         int error;
 567
 568         lock_sock(sk);
 569         set_bit(ATM_VF_WAITING, &vcc->flags);
 570         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 571         sigd_enq2(vcc, as_dropparty, NULL, NULL, NULL, NULL, ep_ref);
 572         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
 573                 schedule();
 574                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 575         }
 576         finish_wait(sk->sk_sleep, &wait);
 577         if (!sigd) {
 578                 error = -EUNATCH;
 579                 goto out;
 580         }
 581         error = xchg(&sk->sk_err_soft, 0);
 582 out:
 583         release_sock(sk);
 584         return error;
 585 }
 586
 587
 588 static int svc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 589 {
 590         int error, ep_ref;
 591         struct sockaddr_atmsvc sa;
 592         struct atm_vcc *vcc = ATM_SD(sock);
 593
 594         switch (cmd) {
 595                 case ATM_ADDPARTY:
 596                         if (!test_bit(ATM_VF_SESSION, &vcc->flags))
 597                                 return -EINVAL;
 598                         if (copy_from_user(&sa, (void __user *) arg, sizeof(sa)))
 599                                 return -EFAULT;
 600                         error = svc_addparty(sock, (struct sockaddr *) &sa, sizeof(sa), 0);
 601                         break;
 602                 case ATM_DROPPARTY:
 603                         if (!test_bit(ATM_VF_SESSION, &vcc->flags))
 604                                 return -EINVAL;
 605                         if (copy_from_user(&ep_ref, (void __user *) arg, sizeof(int)))
 606                                 return -EFAULT;
 607                         error = svc_dropparty(sock, ep_ref);
 608                         break;
 609                 default:
 610                         error = vcc_ioctl(sock, cmd, arg);
 611         }
 612
 613         return error;
 614 }
 615
 616 static const struct proto_ops svc_proto_ops = {
 617         .family =       PF_ATMSVC,
 618         .owner =        THIS_MODULE,
 619
 620         .release =      svc_release,
 621         .bind =         svc_bind,
 622         .connect =      svc_connect,
 623         .socketpair =   sock_no_socketpair,
 624         .accept =       svc_accept,
 625         .getname =      svc_getname,
 626         .poll =         vcc_poll,
 627         .ioctl =        svc_ioctl,
 628         .listen =       svc_listen,
 629         .shutdown =     svc_shutdown,
 630         .setsockopt =   svc_setsockopt,
 631         .getsockopt =   svc_getsockopt,
 632         .sendmsg =      vcc_sendmsg,
 633         .recvmsg =      vcc_recvmsg,
 634         .mmap =         sock_no_mmap,
 635         .sendpage =     sock_no_sendpage,
 636 };
 637
 638
 639 static int svc_create(struct socket *sock,int protocol)
 640 {
 641         int error;
 642
 643         sock->ops = &svc_proto_ops;
 644         error = vcc_create(sock, protocol, AF_ATMSVC);
 645         if (error) return error;
 646         ATM_SD(sock)->local.sas_family = AF_ATMSVC;
 647         ATM_SD(sock)->remote.sas_family = AF_ATMSVC;
 648         return 0;
 649 }
 650
 651
 652 static struct net_proto_family svc_family_ops = {
 653         .family = PF_ATMSVC,
 654         .create = svc_create,
 655         .owner = THIS_MODULE,
 656 };
 657
 658
 659 /*
 660  *      Initialize the ATM SVC protocol family
 661  */
 662
 663 int __init atmsvc_init(void)
 664 {
 665         return sock_register(&svc_family_ops);
 666 }
 667
 668 void atmsvc_exit(void)
 669 {
 670         sock_unregister(PF_ATMSVC);
 671 }