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