1 /* 2 * 3 * Author Karsten Keil <kkeil@novell.com> 4 * 5 * Copyright 2008 by Karsten Keil <kkeil@novell.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 */ 17 18 #include <linux/mISDNif.h> 19 #include <linux/slab.h> 20 #include <linux/export.h> 21 #include "core.h" 22 23 static u_int *debug; 24 25 static struct proto mISDN_proto = { 26 .name = "misdn", 27 .owner = THIS_MODULE, 28 .obj_size = sizeof(struct mISDN_sock) 29 }; 30 31 #define _pms(sk) ((struct mISDN_sock *)sk) 32 33 static struct mISDN_sock_list data_sockets = { 34 .lock = __RW_LOCK_UNLOCKED(data_sockets.lock) 35 }; 36 37 static struct mISDN_sock_list base_sockets = { 38 .lock = __RW_LOCK_UNLOCKED(base_sockets.lock) 39 }; 40 41 #define L2_HEADER_LEN 4 42 43 static inline struct sk_buff * 44 _l2_alloc_skb(unsigned int len, gfp_t gfp_mask) 45 { 46 struct sk_buff *skb; 47 48 skb = alloc_skb(len + L2_HEADER_LEN, gfp_mask); 49 if (likely(skb)) 50 skb_reserve(skb, L2_HEADER_LEN); 51 return skb; 52 } 53 54 static void 55 mISDN_sock_link(struct mISDN_sock_list *l, struct sock *sk) 56 { 57 write_lock_bh(&l->lock); 58 sk_add_node(sk, &l->head); 59 write_unlock_bh(&l->lock); 60 } 61 62 static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk) 63 { 64 write_lock_bh(&l->lock); 65 sk_del_node_init(sk); 66 write_unlock_bh(&l->lock); 67 } 68 69 static int 70 mISDN_send(struct mISDNchannel *ch, struct sk_buff *skb) 71 { 72 struct mISDN_sock *msk; 73 int err; 74 75 msk = container_of(ch, struct mISDN_sock, ch); 76 if (*debug & DEBUG_SOCKET) 77 printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb); 78 if (msk->sk.sk_state == MISDN_CLOSED) 79 return -EUNATCH; 80 __net_timestamp(skb); 81 err = sock_queue_rcv_skb(&msk->sk, skb); 82 if (err) 83 printk(KERN_WARNING "%s: error %d\n", __func__, err); 84 return err; 85 } 86 87 static int 88 mISDN_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg) 89 { 90 struct mISDN_sock *msk; 91 92 msk = container_of(ch, struct mISDN_sock, ch); 93 if (*debug & DEBUG_SOCKET) 94 printk(KERN_DEBUG "%s(%p, %x, %p)\n", __func__, ch, cmd, arg); 95 switch (cmd) { 96 case CLOSE_CHANNEL: 97 msk->sk.sk_state = MISDN_CLOSED; 98 break; 99 } 100 return 0; 101 } 102 103 static inline void 104 mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) 105 { 106 struct timeval tv; 107 108 if (_pms(sk)->cmask & MISDN_TIME_STAMP) { 109 skb_get_timestamp(skb, &tv); 110 put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv); 111 } 112 } 113 114 static int 115 mISDN_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, 116 int flags) 117 { 118 struct sk_buff *skb; 119 struct sock *sk = sock->sk; 120 121 int copied, err; 122 123 if (*debug & DEBUG_SOCKET) 124 printk(KERN_DEBUG "%s: len %d, flags %x ch.nr %d, proto %x\n", 125 __func__, (int)len, flags, _pms(sk)->ch.nr, 126 sk->sk_protocol); 127 if (flags & (MSG_OOB)) 128 return -EOPNOTSUPP; 129 130 if (sk->sk_state == MISDN_CLOSED) 131 return 0; 132 133 skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err); 134 if (!skb) 135 return err; 136 137 if (msg->msg_name) { 138 DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name); 139 140 maddr->family = AF_ISDN; 141 maddr->dev = _pms(sk)->dev->id; 142 if ((sk->sk_protocol == ISDN_P_LAPD_TE) || 143 (sk->sk_protocol == ISDN_P_LAPD_NT)) { 144 maddr->channel = (mISDN_HEAD_ID(skb) >> 16) & 0xff; 145 maddr->tei = (mISDN_HEAD_ID(skb) >> 8) & 0xff; 146 maddr->sapi = mISDN_HEAD_ID(skb) & 0xff; 147 } else { 148 maddr->channel = _pms(sk)->ch.nr; 149 maddr->sapi = _pms(sk)->ch.addr & 0xFF; 150 maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xFF; 151 } 152 msg->msg_namelen = sizeof(*maddr); 153 } 154 155 copied = skb->len + MISDN_HEADER_LEN; 156 if (len < copied) { 157 if (flags & MSG_PEEK) 158 refcount_dec(&skb->users); 159 else 160 skb_queue_head(&sk->sk_receive_queue, skb); 161 return -ENOSPC; 162 } 163 memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb), 164 MISDN_HEADER_LEN); 165 166 err = skb_copy_datagram_msg(skb, 0, msg, copied); 167 168 mISDN_sock_cmsg(sk, msg, skb); 169 170 skb_free_datagram(sk, skb); 171 172 return err ? : copied; 173 } 174 175 static int 176 mISDN_sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) 177 { 178 struct sock *sk = sock->sk; 179 struct sk_buff *skb; 180 int err = -ENOMEM; 181 182 if (*debug & DEBUG_SOCKET) 183 printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n", 184 __func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr, 185 sk->sk_protocol); 186 187 if (msg->msg_flags & MSG_OOB) 188 return -EOPNOTSUPP; 189 190 if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_NOSIGNAL | MSG_ERRQUEUE)) 191 return -EINVAL; 192 193 if (len < MISDN_HEADER_LEN) 194 return -EINVAL; 195 196 if (sk->sk_state != MISDN_BOUND) 197 return -EBADFD; 198 199 lock_sock(sk); 200 201 skb = _l2_alloc_skb(len, GFP_KERNEL); 202 if (!skb) 203 goto done; 204 205 if (memcpy_from_msg(skb_put(skb, len), msg, len)) { 206 err = -EFAULT; 207 goto done; 208 } 209 210 memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN); 211 skb_pull(skb, MISDN_HEADER_LEN); 212 213 if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { 214 /* if we have a address, we use it */ 215 DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name); 216 mISDN_HEAD_ID(skb) = maddr->channel; 217 } else { /* use default for L2 messages */ 218 if ((sk->sk_protocol == ISDN_P_LAPD_TE) || 219 (sk->sk_protocol == ISDN_P_LAPD_NT)) 220 mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr; 221 } 222 223 if (*debug & DEBUG_SOCKET) 224 printk(KERN_DEBUG "%s: ID:%x\n", 225 __func__, mISDN_HEAD_ID(skb)); 226 227 err = -ENODEV; 228 if (!_pms(sk)->ch.peer) 229 goto done; 230 err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb); 231 if (err) 232 goto done; 233 else { 234 skb = NULL; 235 err = len; 236 } 237 238 done: 239 if (skb) 240 kfree_skb(skb); 241 release_sock(sk); 242 return err; 243 } 244 245 static int 246 data_sock_release(struct socket *sock) 247 { 248 struct sock *sk = sock->sk; 249 250 if (*debug & DEBUG_SOCKET) 251 printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); 252 if (!sk) 253 return 0; 254 switch (sk->sk_protocol) { 255 case ISDN_P_TE_S0: 256 case ISDN_P_NT_S0: 257 case ISDN_P_TE_E1: 258 case ISDN_P_NT_E1: 259 if (sk->sk_state == MISDN_BOUND) 260 delete_channel(&_pms(sk)->ch); 261 else 262 mISDN_sock_unlink(&data_sockets, sk); 263 break; 264 case ISDN_P_LAPD_TE: 265 case ISDN_P_LAPD_NT: 266 case ISDN_P_B_RAW: 267 case ISDN_P_B_HDLC: 268 case ISDN_P_B_X75SLP: 269 case ISDN_P_B_L2DTMF: 270 case ISDN_P_B_L2DSP: 271 case ISDN_P_B_L2DSPHDLC: 272 delete_channel(&_pms(sk)->ch); 273 mISDN_sock_unlink(&data_sockets, sk); 274 break; 275 } 276 277 lock_sock(sk); 278 279 sock_orphan(sk); 280 skb_queue_purge(&sk->sk_receive_queue); 281 282 release_sock(sk); 283 sock_put(sk); 284 285 return 0; 286 } 287 288 static int 289 data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p) 290 { 291 struct mISDN_ctrl_req cq; 292 int err = -EINVAL, val[2]; 293 struct mISDNchannel *bchan, *next; 294 295 lock_sock(sk); 296 if (!_pms(sk)->dev) { 297 err = -ENODEV; 298 goto done; 299 } 300 switch (cmd) { 301 case IMCTRLREQ: 302 if (copy_from_user(&cq, p, sizeof(cq))) { 303 err = -EFAULT; 304 break; 305 } 306 if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) { 307 list_for_each_entry_safe(bchan, next, 308 &_pms(sk)->dev->bchannels, list) { 309 if (bchan->nr == cq.channel) { 310 err = bchan->ctrl(bchan, 311 CONTROL_CHANNEL, &cq); 312 break; 313 } 314 } 315 } else 316 err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D, 317 CONTROL_CHANNEL, &cq); 318 if (err) 319 break; 320 if (copy_to_user(p, &cq, sizeof(cq))) 321 err = -EFAULT; 322 break; 323 case IMCLEAR_L2: 324 if (sk->sk_protocol != ISDN_P_LAPD_NT) { 325 err = -EINVAL; 326 break; 327 } 328 val[0] = cmd; 329 if (get_user(val[1], (int __user *)p)) { 330 err = -EFAULT; 331 break; 332 } 333 err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, 334 CONTROL_CHANNEL, val); 335 break; 336 case IMHOLD_L1: 337 if (sk->sk_protocol != ISDN_P_LAPD_NT 338 && sk->sk_protocol != ISDN_P_LAPD_TE) { 339 err = -EINVAL; 340 break; 341 } 342 val[0] = cmd; 343 if (get_user(val[1], (int __user *)p)) { 344 err = -EFAULT; 345 break; 346 } 347 err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, 348 CONTROL_CHANNEL, val); 349 break; 350 default: 351 err = -EINVAL; 352 break; 353 } 354 done: 355 release_sock(sk); 356 return err; 357 } 358 359 static int 360 data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 361 { 362 int err = 0, id; 363 struct sock *sk = sock->sk; 364 struct mISDNdevice *dev; 365 struct mISDNversion ver; 366 367 switch (cmd) { 368 case IMGETVERSION: 369 ver.major = MISDN_MAJOR_VERSION; 370 ver.minor = MISDN_MINOR_VERSION; 371 ver.release = MISDN_RELEASE; 372 if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) 373 err = -EFAULT; 374 break; 375 case IMGETCOUNT: 376 id = get_mdevice_count(); 377 if (put_user(id, (int __user *)arg)) 378 err = -EFAULT; 379 break; 380 case IMGETDEVINFO: 381 if (get_user(id, (int __user *)arg)) { 382 err = -EFAULT; 383 break; 384 } 385 dev = get_mdevice(id); 386 if (dev) { 387 struct mISDN_devinfo di; 388 389 memset(&di, 0, sizeof(di)); 390 di.id = dev->id; 391 di.Dprotocols = dev->Dprotocols; 392 di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); 393 di.protocol = dev->D.protocol; 394 memcpy(di.channelmap, dev->channelmap, 395 sizeof(di.channelmap)); 396 di.nrbchan = dev->nrbchan; 397 strcpy(di.name, dev_name(&dev->dev)); 398 if (copy_to_user((void __user *)arg, &di, sizeof(di))) 399 err = -EFAULT; 400 } else 401 err = -ENODEV; 402 break; 403 default: 404 if (sk->sk_state == MISDN_BOUND) 405 err = data_sock_ioctl_bound(sk, cmd, 406 (void __user *)arg); 407 else 408 err = -ENOTCONN; 409 } 410 return err; 411 } 412 413 static int data_sock_setsockopt(struct socket *sock, int level, int optname, 414 char __user *optval, unsigned int len) 415 { 416 struct sock *sk = sock->sk; 417 int err = 0, opt = 0; 418 419 if (*debug & DEBUG_SOCKET) 420 printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, 421 level, optname, optval, len); 422 423 lock_sock(sk); 424 425 switch (optname) { 426 case MISDN_TIME_STAMP: 427 if (get_user(opt, (int __user *)optval)) { 428 err = -EFAULT; 429 break; 430 } 431 432 if (opt) 433 _pms(sk)->cmask |= MISDN_TIME_STAMP; 434 else 435 _pms(sk)->cmask &= ~MISDN_TIME_STAMP; 436 break; 437 default: 438 err = -ENOPROTOOPT; 439 break; 440 } 441 release_sock(sk); 442 return err; 443 } 444 445 static int data_sock_getsockopt(struct socket *sock, int level, int optname, 446 char __user *optval, int __user *optlen) 447 { 448 struct sock *sk = sock->sk; 449 int len, opt; 450 451 if (get_user(len, optlen)) 452 return -EFAULT; 453 454 if (len != sizeof(char)) 455 return -EINVAL; 456 457 switch (optname) { 458 case MISDN_TIME_STAMP: 459 if (_pms(sk)->cmask & MISDN_TIME_STAMP) 460 opt = 1; 461 else 462 opt = 0; 463 464 if (put_user(opt, optval)) 465 return -EFAULT; 466 break; 467 default: 468 return -ENOPROTOOPT; 469 } 470 471 return 0; 472 } 473 474 static int 475 data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) 476 { 477 struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; 478 struct sock *sk = sock->sk; 479 struct sock *csk; 480 int err = 0; 481 482 if (*debug & DEBUG_SOCKET) 483 printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); 484 if (addr_len != sizeof(struct sockaddr_mISDN)) 485 return -EINVAL; 486 if (!maddr || maddr->family != AF_ISDN) 487 return -EINVAL; 488 489 lock_sock(sk); 490 491 if (_pms(sk)->dev) { 492 err = -EALREADY; 493 goto done; 494 } 495 _pms(sk)->dev = get_mdevice(maddr->dev); 496 if (!_pms(sk)->dev) { 497 err = -ENODEV; 498 goto done; 499 } 500 501 if (sk->sk_protocol < ISDN_P_B_START) { 502 read_lock_bh(&data_sockets.lock); 503 sk_for_each(csk, &data_sockets.head) { 504 if (sk == csk) 505 continue; 506 if (_pms(csk)->dev != _pms(sk)->dev) 507 continue; 508 if (csk->sk_protocol >= ISDN_P_B_START) 509 continue; 510 if (IS_ISDN_P_TE(csk->sk_protocol) 511 == IS_ISDN_P_TE(sk->sk_protocol)) 512 continue; 513 read_unlock_bh(&data_sockets.lock); 514 err = -EBUSY; 515 goto done; 516 } 517 read_unlock_bh(&data_sockets.lock); 518 } 519 520 _pms(sk)->ch.send = mISDN_send; 521 _pms(sk)->ch.ctrl = mISDN_ctrl; 522 523 switch (sk->sk_protocol) { 524 case ISDN_P_TE_S0: 525 case ISDN_P_NT_S0: 526 case ISDN_P_TE_E1: 527 case ISDN_P_NT_E1: 528 mISDN_sock_unlink(&data_sockets, sk); 529 err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch, 530 sk->sk_protocol, maddr); 531 if (err) 532 mISDN_sock_link(&data_sockets, sk); 533 break; 534 case ISDN_P_LAPD_TE: 535 case ISDN_P_LAPD_NT: 536 err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch, 537 sk->sk_protocol, maddr); 538 break; 539 case ISDN_P_B_RAW: 540 case ISDN_P_B_HDLC: 541 case ISDN_P_B_X75SLP: 542 case ISDN_P_B_L2DTMF: 543 case ISDN_P_B_L2DSP: 544 case ISDN_P_B_L2DSPHDLC: 545 err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch, 546 sk->sk_protocol, maddr); 547 break; 548 default: 549 err = -EPROTONOSUPPORT; 550 } 551 if (err) 552 goto done; 553 sk->sk_state = MISDN_BOUND; 554 _pms(sk)->ch.protocol = sk->sk_protocol; 555 556 done: 557 release_sock(sk); 558 return err; 559 } 560 561 static int 562 data_sock_getname(struct socket *sock, struct sockaddr *addr, 563 int peer) 564 { 565 struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; 566 struct sock *sk = sock->sk; 567 568 if (!_pms(sk)->dev) 569 return -EBADFD; 570 571 lock_sock(sk); 572 573 maddr->family = AF_ISDN; 574 maddr->dev = _pms(sk)->dev->id; 575 maddr->channel = _pms(sk)->ch.nr; 576 maddr->sapi = _pms(sk)->ch.addr & 0xff; 577 maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff; 578 release_sock(sk); 579 return sizeof(*maddr); 580 } 581 582 static const struct proto_ops data_sock_ops = { 583 .family = PF_ISDN, 584 .owner = THIS_MODULE, 585 .release = data_sock_release, 586 .ioctl = data_sock_ioctl, 587 .bind = data_sock_bind, 588 .getname = data_sock_getname, 589 .sendmsg = mISDN_sock_sendmsg, 590 .recvmsg = mISDN_sock_recvmsg, 591 .poll_mask = datagram_poll_mask, 592 .listen = sock_no_listen, 593 .shutdown = sock_no_shutdown, 594 .setsockopt = data_sock_setsockopt, 595 .getsockopt = data_sock_getsockopt, 596 .connect = sock_no_connect, 597 .socketpair = sock_no_socketpair, 598 .accept = sock_no_accept, 599 .mmap = sock_no_mmap 600 }; 601 602 static int 603 data_sock_create(struct net *net, struct socket *sock, int protocol, int kern) 604 { 605 struct sock *sk; 606 607 if (sock->type != SOCK_DGRAM) 608 return -ESOCKTNOSUPPORT; 609 610 sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern); 611 if (!sk) 612 return -ENOMEM; 613 614 sock_init_data(sock, sk); 615 616 sock->ops = &data_sock_ops; 617 sock->state = SS_UNCONNECTED; 618 sock_reset_flag(sk, SOCK_ZAPPED); 619 620 sk->sk_protocol = protocol; 621 sk->sk_state = MISDN_OPEN; 622 mISDN_sock_link(&data_sockets, sk); 623 624 return 0; 625 } 626 627 static int 628 base_sock_release(struct socket *sock) 629 { 630 struct sock *sk = sock->sk; 631 632 printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); 633 if (!sk) 634 return 0; 635 636 mISDN_sock_unlink(&base_sockets, sk); 637 sock_orphan(sk); 638 sock_put(sk); 639 640 return 0; 641 } 642 643 static int 644 base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 645 { 646 int err = 0, id; 647 struct mISDNdevice *dev; 648 struct mISDNversion ver; 649 650 switch (cmd) { 651 case IMGETVERSION: 652 ver.major = MISDN_MAJOR_VERSION; 653 ver.minor = MISDN_MINOR_VERSION; 654 ver.release = MISDN_RELEASE; 655 if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) 656 err = -EFAULT; 657 break; 658 case IMGETCOUNT: 659 id = get_mdevice_count(); 660 if (put_user(id, (int __user *)arg)) 661 err = -EFAULT; 662 break; 663 case IMGETDEVINFO: 664 if (get_user(id, (int __user *)arg)) { 665 err = -EFAULT; 666 break; 667 } 668 dev = get_mdevice(id); 669 if (dev) { 670 struct mISDN_devinfo di; 671 672 memset(&di, 0, sizeof(di)); 673 di.id = dev->id; 674 di.Dprotocols = dev->Dprotocols; 675 di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); 676 di.protocol = dev->D.protocol; 677 memcpy(di.channelmap, dev->channelmap, 678 sizeof(di.channelmap)); 679 di.nrbchan = dev->nrbchan; 680 strcpy(di.name, dev_name(&dev->dev)); 681 if (copy_to_user((void __user *)arg, &di, sizeof(di))) 682 err = -EFAULT; 683 } else 684 err = -ENODEV; 685 break; 686 case IMSETDEVNAME: 687 { 688 struct mISDN_devrename dn; 689 if (copy_from_user(&dn, (void __user *)arg, 690 sizeof(dn))) { 691 err = -EFAULT; 692 break; 693 } 694 dev = get_mdevice(dn.id); 695 if (dev) 696 err = device_rename(&dev->dev, dn.name); 697 else 698 err = -ENODEV; 699 } 700 break; 701 default: 702 err = -EINVAL; 703 } 704 return err; 705 } 706 707 static int 708 base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) 709 { 710 struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; 711 struct sock *sk = sock->sk; 712 int err = 0; 713 714 if (!maddr || maddr->family != AF_ISDN) 715 return -EINVAL; 716 717 if (addr_len < sizeof(struct sockaddr_mISDN)) 718 return -EINVAL; 719 720 lock_sock(sk); 721 722 if (_pms(sk)->dev) { 723 err = -EALREADY; 724 goto done; 725 } 726 727 _pms(sk)->dev = get_mdevice(maddr->dev); 728 if (!_pms(sk)->dev) { 729 err = -ENODEV; 730 goto done; 731 } 732 sk->sk_state = MISDN_BOUND; 733 734 done: 735 release_sock(sk); 736 return err; 737 } 738 739 static const struct proto_ops base_sock_ops = { 740 .family = PF_ISDN, 741 .owner = THIS_MODULE, 742 .release = base_sock_release, 743 .ioctl = base_sock_ioctl, 744 .bind = base_sock_bind, 745 .getname = sock_no_getname, 746 .sendmsg = sock_no_sendmsg, 747 .recvmsg = sock_no_recvmsg, 748 .listen = sock_no_listen, 749 .shutdown = sock_no_shutdown, 750 .setsockopt = sock_no_setsockopt, 751 .getsockopt = sock_no_getsockopt, 752 .connect = sock_no_connect, 753 .socketpair = sock_no_socketpair, 754 .accept = sock_no_accept, 755 .mmap = sock_no_mmap 756 }; 757 758 759 static int 760 base_sock_create(struct net *net, struct socket *sock, int protocol, int kern) 761 { 762 struct sock *sk; 763 764 if (sock->type != SOCK_RAW) 765 return -ESOCKTNOSUPPORT; 766 767 sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern); 768 if (!sk) 769 return -ENOMEM; 770 771 sock_init_data(sock, sk); 772 sock->ops = &base_sock_ops; 773 sock->state = SS_UNCONNECTED; 774 sock_reset_flag(sk, SOCK_ZAPPED); 775 sk->sk_protocol = protocol; 776 sk->sk_state = MISDN_OPEN; 777 mISDN_sock_link(&base_sockets, sk); 778 779 return 0; 780 } 781 782 static int 783 mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern) 784 { 785 int err = -EPROTONOSUPPORT; 786 787 switch (proto) { 788 case ISDN_P_BASE: 789 err = base_sock_create(net, sock, proto, kern); 790 break; 791 case ISDN_P_TE_S0: 792 case ISDN_P_NT_S0: 793 case ISDN_P_TE_E1: 794 case ISDN_P_NT_E1: 795 case ISDN_P_LAPD_TE: 796 case ISDN_P_LAPD_NT: 797 case ISDN_P_B_RAW: 798 case ISDN_P_B_HDLC: 799 case ISDN_P_B_X75SLP: 800 case ISDN_P_B_L2DTMF: 801 case ISDN_P_B_L2DSP: 802 case ISDN_P_B_L2DSPHDLC: 803 err = data_sock_create(net, sock, proto, kern); 804 break; 805 default: 806 return err; 807 } 808 809 return err; 810 } 811 812 static const struct net_proto_family mISDN_sock_family_ops = { 813 .owner = THIS_MODULE, 814 .family = PF_ISDN, 815 .create = mISDN_sock_create, 816 }; 817 818 int 819 misdn_sock_init(u_int *deb) 820 { 821 int err; 822 823 debug = deb; 824 err = sock_register(&mISDN_sock_family_ops); 825 if (err) 826 printk(KERN_ERR "%s: error(%d)\n", __func__, err); 827 return err; 828 } 829 830 void 831 misdn_sock_cleanup(void) 832 { 833 sock_unregister(PF_ISDN); 834 } 835