1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License as published by 4 * the Free Software Foundation; either version 2 of the License, or 5 * (at your option) any later version. 6 * 7 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) 8 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk) 9 * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net) 10 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi) 11 */ 12 13 #include <linux/capability.h> 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/init.h> 17 #include <linux/errno.h> 18 #include <linux/types.h> 19 #include <linux/socket.h> 20 #include <linux/in.h> 21 #include <linux/slab.h> 22 #include <linux/kernel.h> 23 #include <linux/sched.h> 24 #include <linux/spinlock.h> 25 #include <linux/timer.h> 26 #include <linux/string.h> 27 #include <linux/sockios.h> 28 #include <linux/net.h> 29 #include <linux/stat.h> 30 #include <net/net_namespace.h> 31 #include <net/ax25.h> 32 #include <linux/inet.h> 33 #include <linux/netdevice.h> 34 #include <linux/if_arp.h> 35 #include <linux/skbuff.h> 36 #include <net/sock.h> 37 #include <linux/uaccess.h> 38 #include <linux/fcntl.h> 39 #include <linux/termios.h> 40 #include <linux/mm.h> 41 #include <linux/interrupt.h> 42 #include <linux/notifier.h> 43 #include <net/rose.h> 44 #include <linux/proc_fs.h> 45 #include <linux/seq_file.h> 46 #include <net/tcp_states.h> 47 #include <net/ip.h> 48 #include <net/arp.h> 49 50 static int rose_ndevs = 10; 51 52 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0; 53 int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1; 54 int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2; 55 int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3; 56 int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE; 57 int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB; 58 int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING; 59 int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT; 60 int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC; 61 int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE; 62 63 static HLIST_HEAD(rose_list); 64 static DEFINE_SPINLOCK(rose_list_lock); 65 66 static const struct proto_ops rose_proto_ops; 67 68 ax25_address rose_callsign; 69 70 /* 71 * ROSE network devices are virtual network devices encapsulating ROSE 72 * frames into AX.25 which will be sent through an AX.25 device, so form a 73 * special "super class" of normal net devices; split their locks off into a 74 * separate class since they always nest. 75 */ 76 static struct lock_class_key rose_netdev_xmit_lock_key; 77 static struct lock_class_key rose_netdev_addr_lock_key; 78 79 static void rose_set_lockdep_one(struct net_device *dev, 80 struct netdev_queue *txq, 81 void *_unused) 82 { 83 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); 84 } 85 86 static void rose_set_lockdep_key(struct net_device *dev) 87 { 88 lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key); 89 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL); 90 } 91 92 /* 93 * Convert a ROSE address into text. 94 */ 95 char *rose2asc(char *buf, const rose_address *addr) 96 { 97 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 && 98 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 && 99 addr->rose_addr[4] == 0x00) { 100 strcpy(buf, "*"); 101 } else { 102 sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF, 103 addr->rose_addr[1] & 0xFF, 104 addr->rose_addr[2] & 0xFF, 105 addr->rose_addr[3] & 0xFF, 106 addr->rose_addr[4] & 0xFF); 107 } 108 109 return buf; 110 } 111 112 /* 113 * Compare two ROSE addresses, 0 == equal. 114 */ 115 int rosecmp(rose_address *addr1, rose_address *addr2) 116 { 117 int i; 118 119 for (i = 0; i < 5; i++) 120 if (addr1->rose_addr[i] != addr2->rose_addr[i]) 121 return 1; 122 123 return 0; 124 } 125 126 /* 127 * Compare two ROSE addresses for only mask digits, 0 == equal. 128 */ 129 int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask) 130 { 131 unsigned int i, j; 132 133 if (mask > 10) 134 return 1; 135 136 for (i = 0; i < mask; i++) { 137 j = i / 2; 138 139 if ((i % 2) != 0) { 140 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) 141 return 1; 142 } else { 143 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) 144 return 1; 145 } 146 } 147 148 return 0; 149 } 150 151 /* 152 * Socket removal during an interrupt is now safe. 153 */ 154 static void rose_remove_socket(struct sock *sk) 155 { 156 spin_lock_bh(&rose_list_lock); 157 sk_del_node_init(sk); 158 spin_unlock_bh(&rose_list_lock); 159 } 160 161 /* 162 * Kill all bound sockets on a broken link layer connection to a 163 * particular neighbour. 164 */ 165 void rose_kill_by_neigh(struct rose_neigh *neigh) 166 { 167 struct sock *s; 168 169 spin_lock_bh(&rose_list_lock); 170 sk_for_each(s, &rose_list) { 171 struct rose_sock *rose = rose_sk(s); 172 173 if (rose->neighbour == neigh) { 174 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 175 rose->neighbour->use--; 176 rose->neighbour = NULL; 177 } 178 } 179 spin_unlock_bh(&rose_list_lock); 180 } 181 182 /* 183 * Kill all bound sockets on a dropped device. 184 */ 185 static void rose_kill_by_device(struct net_device *dev) 186 { 187 struct sock *s; 188 189 spin_lock_bh(&rose_list_lock); 190 sk_for_each(s, &rose_list) { 191 struct rose_sock *rose = rose_sk(s); 192 193 if (rose->device == dev) { 194 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 195 if (rose->neighbour) 196 rose->neighbour->use--; 197 rose->device = NULL; 198 } 199 } 200 spin_unlock_bh(&rose_list_lock); 201 } 202 203 /* 204 * Handle device status changes. 205 */ 206 static int rose_device_event(struct notifier_block *this, 207 unsigned long event, void *ptr) 208 { 209 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 210 211 if (!net_eq(dev_net(dev), &init_net)) 212 return NOTIFY_DONE; 213 214 if (event != NETDEV_DOWN) 215 return NOTIFY_DONE; 216 217 switch (dev->type) { 218 case ARPHRD_ROSE: 219 rose_kill_by_device(dev); 220 break; 221 case ARPHRD_AX25: 222 rose_link_device_down(dev); 223 rose_rt_device_down(dev); 224 break; 225 } 226 227 return NOTIFY_DONE; 228 } 229 230 /* 231 * Add a socket to the bound sockets list. 232 */ 233 static void rose_insert_socket(struct sock *sk) 234 { 235 236 spin_lock_bh(&rose_list_lock); 237 sk_add_node(sk, &rose_list); 238 spin_unlock_bh(&rose_list_lock); 239 } 240 241 /* 242 * Find a socket that wants to accept the Call Request we just 243 * received. 244 */ 245 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) 246 { 247 struct sock *s; 248 249 spin_lock_bh(&rose_list_lock); 250 sk_for_each(s, &rose_list) { 251 struct rose_sock *rose = rose_sk(s); 252 253 if (!rosecmp(&rose->source_addr, addr) && 254 !ax25cmp(&rose->source_call, call) && 255 !rose->source_ndigis && s->sk_state == TCP_LISTEN) 256 goto found; 257 } 258 259 sk_for_each(s, &rose_list) { 260 struct rose_sock *rose = rose_sk(s); 261 262 if (!rosecmp(&rose->source_addr, addr) && 263 !ax25cmp(&rose->source_call, &null_ax25_address) && 264 s->sk_state == TCP_LISTEN) 265 goto found; 266 } 267 s = NULL; 268 found: 269 spin_unlock_bh(&rose_list_lock); 270 return s; 271 } 272 273 /* 274 * Find a connected ROSE socket given my LCI and device. 275 */ 276 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) 277 { 278 struct sock *s; 279 280 spin_lock_bh(&rose_list_lock); 281 sk_for_each(s, &rose_list) { 282 struct rose_sock *rose = rose_sk(s); 283 284 if (rose->lci == lci && rose->neighbour == neigh) 285 goto found; 286 } 287 s = NULL; 288 found: 289 spin_unlock_bh(&rose_list_lock); 290 return s; 291 } 292 293 /* 294 * Find a unique LCI for a given device. 295 */ 296 unsigned int rose_new_lci(struct rose_neigh *neigh) 297 { 298 int lci; 299 300 if (neigh->dce_mode) { 301 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) 302 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 303 return lci; 304 } else { 305 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) 306 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 307 return lci; 308 } 309 310 return 0; 311 } 312 313 /* 314 * Deferred destroy. 315 */ 316 void rose_destroy_socket(struct sock *); 317 318 /* 319 * Handler for deferred kills. 320 */ 321 static void rose_destroy_timer(unsigned long data) 322 { 323 rose_destroy_socket((struct sock *)data); 324 } 325 326 /* 327 * This is called from user mode and the timers. Thus it protects itself 328 * against interrupt users but doesn't worry about being called during 329 * work. Once it is removed from the queue no interrupt or bottom half 330 * will touch it and we are (fairly 8-) ) safe. 331 */ 332 void rose_destroy_socket(struct sock *sk) 333 { 334 struct sk_buff *skb; 335 336 rose_remove_socket(sk); 337 rose_stop_heartbeat(sk); 338 rose_stop_idletimer(sk); 339 rose_stop_timer(sk); 340 341 rose_clear_queues(sk); /* Flush the queues */ 342 343 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { 344 if (skb->sk != sk) { /* A pending connection */ 345 /* Queue the unaccepted socket for death */ 346 sock_set_flag(skb->sk, SOCK_DEAD); 347 rose_start_heartbeat(skb->sk); 348 rose_sk(skb->sk)->state = ROSE_STATE_0; 349 } 350 351 kfree_skb(skb); 352 } 353 354 if (sk_has_allocations(sk)) { 355 /* Defer: outstanding buffers */ 356 setup_timer(&sk->sk_timer, rose_destroy_timer, 357 (unsigned long)sk); 358 sk->sk_timer.expires = jiffies + 10 * HZ; 359 add_timer(&sk->sk_timer); 360 } else 361 sock_put(sk); 362 } 363 364 /* 365 * Handling for system calls applied via the various interfaces to a 366 * ROSE socket object. 367 */ 368 369 static int rose_setsockopt(struct socket *sock, int level, int optname, 370 char __user *optval, unsigned int optlen) 371 { 372 struct sock *sk = sock->sk; 373 struct rose_sock *rose = rose_sk(sk); 374 int opt; 375 376 if (level != SOL_ROSE) 377 return -ENOPROTOOPT; 378 379 if (optlen < sizeof(int)) 380 return -EINVAL; 381 382 if (get_user(opt, (int __user *)optval)) 383 return -EFAULT; 384 385 switch (optname) { 386 case ROSE_DEFER: 387 rose->defer = opt ? 1 : 0; 388 return 0; 389 390 case ROSE_T1: 391 if (opt < 1) 392 return -EINVAL; 393 rose->t1 = opt * HZ; 394 return 0; 395 396 case ROSE_T2: 397 if (opt < 1) 398 return -EINVAL; 399 rose->t2 = opt * HZ; 400 return 0; 401 402 case ROSE_T3: 403 if (opt < 1) 404 return -EINVAL; 405 rose->t3 = opt * HZ; 406 return 0; 407 408 case ROSE_HOLDBACK: 409 if (opt < 1) 410 return -EINVAL; 411 rose->hb = opt * HZ; 412 return 0; 413 414 case ROSE_IDLE: 415 if (opt < 0) 416 return -EINVAL; 417 rose->idle = opt * 60 * HZ; 418 return 0; 419 420 case ROSE_QBITINCL: 421 rose->qbitincl = opt ? 1 : 0; 422 return 0; 423 424 default: 425 return -ENOPROTOOPT; 426 } 427 } 428 429 static int rose_getsockopt(struct socket *sock, int level, int optname, 430 char __user *optval, int __user *optlen) 431 { 432 struct sock *sk = sock->sk; 433 struct rose_sock *rose = rose_sk(sk); 434 int val = 0; 435 int len; 436 437 if (level != SOL_ROSE) 438 return -ENOPROTOOPT; 439 440 if (get_user(len, optlen)) 441 return -EFAULT; 442 443 if (len < 0) 444 return -EINVAL; 445 446 switch (optname) { 447 case ROSE_DEFER: 448 val = rose->defer; 449 break; 450 451 case ROSE_T1: 452 val = rose->t1 / HZ; 453 break; 454 455 case ROSE_T2: 456 val = rose->t2 / HZ; 457 break; 458 459 case ROSE_T3: 460 val = rose->t3 / HZ; 461 break; 462 463 case ROSE_HOLDBACK: 464 val = rose->hb / HZ; 465 break; 466 467 case ROSE_IDLE: 468 val = rose->idle / (60 * HZ); 469 break; 470 471 case ROSE_QBITINCL: 472 val = rose->qbitincl; 473 break; 474 475 default: 476 return -ENOPROTOOPT; 477 } 478 479 len = min_t(unsigned int, len, sizeof(int)); 480 481 if (put_user(len, optlen)) 482 return -EFAULT; 483 484 return copy_to_user(optval, &val, len) ? -EFAULT : 0; 485 } 486 487 static int rose_listen(struct socket *sock, int backlog) 488 { 489 struct sock *sk = sock->sk; 490 491 if (sk->sk_state != TCP_LISTEN) { 492 struct rose_sock *rose = rose_sk(sk); 493 494 rose->dest_ndigis = 0; 495 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); 496 memset(&rose->dest_call, 0, AX25_ADDR_LEN); 497 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); 498 sk->sk_max_ack_backlog = backlog; 499 sk->sk_state = TCP_LISTEN; 500 return 0; 501 } 502 503 return -EOPNOTSUPP; 504 } 505 506 static struct proto rose_proto = { 507 .name = "ROSE", 508 .owner = THIS_MODULE, 509 .obj_size = sizeof(struct rose_sock), 510 }; 511 512 static int rose_create(struct net *net, struct socket *sock, int protocol, 513 int kern) 514 { 515 struct sock *sk; 516 struct rose_sock *rose; 517 518 if (!net_eq(net, &init_net)) 519 return -EAFNOSUPPORT; 520 521 if (sock->type != SOCK_SEQPACKET || protocol != 0) 522 return -ESOCKTNOSUPPORT; 523 524 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern); 525 if (sk == NULL) 526 return -ENOMEM; 527 528 rose = rose_sk(sk); 529 530 sock_init_data(sock, sk); 531 532 skb_queue_head_init(&rose->ack_queue); 533 #ifdef M_BIT 534 skb_queue_head_init(&rose->frag_queue); 535 rose->fraglen = 0; 536 #endif 537 538 sock->ops = &rose_proto_ops; 539 sk->sk_protocol = protocol; 540 541 init_timer(&rose->timer); 542 init_timer(&rose->idletimer); 543 544 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); 545 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); 546 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); 547 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); 548 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); 549 550 rose->state = ROSE_STATE_0; 551 552 return 0; 553 } 554 555 static struct sock *rose_make_new(struct sock *osk) 556 { 557 struct sock *sk; 558 struct rose_sock *rose, *orose; 559 560 if (osk->sk_type != SOCK_SEQPACKET) 561 return NULL; 562 563 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto, 0); 564 if (sk == NULL) 565 return NULL; 566 567 rose = rose_sk(sk); 568 569 sock_init_data(NULL, sk); 570 571 skb_queue_head_init(&rose->ack_queue); 572 #ifdef M_BIT 573 skb_queue_head_init(&rose->frag_queue); 574 rose->fraglen = 0; 575 #endif 576 577 sk->sk_type = osk->sk_type; 578 sk->sk_priority = osk->sk_priority; 579 sk->sk_protocol = osk->sk_protocol; 580 sk->sk_rcvbuf = osk->sk_rcvbuf; 581 sk->sk_sndbuf = osk->sk_sndbuf; 582 sk->sk_state = TCP_ESTABLISHED; 583 sock_copy_flags(sk, osk); 584 585 init_timer(&rose->timer); 586 init_timer(&rose->idletimer); 587 588 orose = rose_sk(osk); 589 rose->t1 = orose->t1; 590 rose->t2 = orose->t2; 591 rose->t3 = orose->t3; 592 rose->hb = orose->hb; 593 rose->idle = orose->idle; 594 rose->defer = orose->defer; 595 rose->device = orose->device; 596 rose->qbitincl = orose->qbitincl; 597 598 return sk; 599 } 600 601 static int rose_release(struct socket *sock) 602 { 603 struct sock *sk = sock->sk; 604 struct rose_sock *rose; 605 606 if (sk == NULL) return 0; 607 608 sock_hold(sk); 609 sock_orphan(sk); 610 lock_sock(sk); 611 rose = rose_sk(sk); 612 613 switch (rose->state) { 614 case ROSE_STATE_0: 615 release_sock(sk); 616 rose_disconnect(sk, 0, -1, -1); 617 lock_sock(sk); 618 rose_destroy_socket(sk); 619 break; 620 621 case ROSE_STATE_2: 622 rose->neighbour->use--; 623 release_sock(sk); 624 rose_disconnect(sk, 0, -1, -1); 625 lock_sock(sk); 626 rose_destroy_socket(sk); 627 break; 628 629 case ROSE_STATE_1: 630 case ROSE_STATE_3: 631 case ROSE_STATE_4: 632 case ROSE_STATE_5: 633 rose_clear_queues(sk); 634 rose_stop_idletimer(sk); 635 rose_write_internal(sk, ROSE_CLEAR_REQUEST); 636 rose_start_t3timer(sk); 637 rose->state = ROSE_STATE_2; 638 sk->sk_state = TCP_CLOSE; 639 sk->sk_shutdown |= SEND_SHUTDOWN; 640 sk->sk_state_change(sk); 641 sock_set_flag(sk, SOCK_DEAD); 642 sock_set_flag(sk, SOCK_DESTROY); 643 break; 644 645 default: 646 break; 647 } 648 649 sock->sk = NULL; 650 release_sock(sk); 651 sock_put(sk); 652 653 return 0; 654 } 655 656 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) 657 { 658 struct sock *sk = sock->sk; 659 struct rose_sock *rose = rose_sk(sk); 660 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 661 struct net_device *dev; 662 ax25_address *source; 663 ax25_uid_assoc *user; 664 int n; 665 666 if (!sock_flag(sk, SOCK_ZAPPED)) 667 return -EINVAL; 668 669 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 670 return -EINVAL; 671 672 if (addr->srose_family != AF_ROSE) 673 return -EINVAL; 674 675 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 676 return -EINVAL; 677 678 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 679 return -EINVAL; 680 681 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) 682 return -EADDRNOTAVAIL; 683 684 source = &addr->srose_call; 685 686 user = ax25_findbyuid(current_euid()); 687 if (user) { 688 rose->source_call = user->call; 689 ax25_uid_put(user); 690 } else { 691 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) 692 return -EACCES; 693 rose->source_call = *source; 694 } 695 696 rose->source_addr = addr->srose_addr; 697 rose->device = dev; 698 rose->source_ndigis = addr->srose_ndigis; 699 700 if (addr_len == sizeof(struct full_sockaddr_rose)) { 701 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 702 for (n = 0 ; n < addr->srose_ndigis ; n++) 703 rose->source_digis[n] = full_addr->srose_digis[n]; 704 } else { 705 if (rose->source_ndigis == 1) { 706 rose->source_digis[0] = addr->srose_digi; 707 } 708 } 709 710 rose_insert_socket(sk); 711 712 sock_reset_flag(sk, SOCK_ZAPPED); 713 714 return 0; 715 } 716 717 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) 718 { 719 struct sock *sk = sock->sk; 720 struct rose_sock *rose = rose_sk(sk); 721 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 722 unsigned char cause, diagnostic; 723 struct net_device *dev; 724 ax25_uid_assoc *user; 725 int n, err = 0; 726 727 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 728 return -EINVAL; 729 730 if (addr->srose_family != AF_ROSE) 731 return -EINVAL; 732 733 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 734 return -EINVAL; 735 736 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 737 return -EINVAL; 738 739 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ 740 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) 741 return -EINVAL; 742 743 lock_sock(sk); 744 745 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { 746 /* Connect completed during a ERESTARTSYS event */ 747 sock->state = SS_CONNECTED; 748 goto out_release; 749 } 750 751 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { 752 sock->state = SS_UNCONNECTED; 753 err = -ECONNREFUSED; 754 goto out_release; 755 } 756 757 if (sk->sk_state == TCP_ESTABLISHED) { 758 /* No reconnect on a seqpacket socket */ 759 err = -EISCONN; 760 goto out_release; 761 } 762 763 sk->sk_state = TCP_CLOSE; 764 sock->state = SS_UNCONNECTED; 765 766 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, 767 &diagnostic, 0); 768 if (!rose->neighbour) { 769 err = -ENETUNREACH; 770 goto out_release; 771 } 772 773 rose->lci = rose_new_lci(rose->neighbour); 774 if (!rose->lci) { 775 err = -ENETUNREACH; 776 goto out_release; 777 } 778 779 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ 780 sock_reset_flag(sk, SOCK_ZAPPED); 781 782 if ((dev = rose_dev_first()) == NULL) { 783 err = -ENETUNREACH; 784 goto out_release; 785 } 786 787 user = ax25_findbyuid(current_euid()); 788 if (!user) { 789 err = -EINVAL; 790 goto out_release; 791 } 792 793 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); 794 rose->source_call = user->call; 795 rose->device = dev; 796 ax25_uid_put(user); 797 798 rose_insert_socket(sk); /* Finish the bind */ 799 } 800 rose->dest_addr = addr->srose_addr; 801 rose->dest_call = addr->srose_call; 802 rose->rand = ((long)rose & 0xFFFF) + rose->lci; 803 rose->dest_ndigis = addr->srose_ndigis; 804 805 if (addr_len == sizeof(struct full_sockaddr_rose)) { 806 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 807 for (n = 0 ; n < addr->srose_ndigis ; n++) 808 rose->dest_digis[n] = full_addr->srose_digis[n]; 809 } else { 810 if (rose->dest_ndigis == 1) { 811 rose->dest_digis[0] = addr->srose_digi; 812 } 813 } 814 815 /* Move to connecting socket, start sending Connect Requests */ 816 sock->state = SS_CONNECTING; 817 sk->sk_state = TCP_SYN_SENT; 818 819 rose->state = ROSE_STATE_1; 820 821 rose->neighbour->use++; 822 823 rose_write_internal(sk, ROSE_CALL_REQUEST); 824 rose_start_heartbeat(sk); 825 rose_start_t1timer(sk); 826 827 /* Now the loop */ 828 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) { 829 err = -EINPROGRESS; 830 goto out_release; 831 } 832 833 /* 834 * A Connect Ack with Choke or timeout or failed routing will go to 835 * closed. 836 */ 837 if (sk->sk_state == TCP_SYN_SENT) { 838 DEFINE_WAIT(wait); 839 840 for (;;) { 841 prepare_to_wait(sk_sleep(sk), &wait, 842 TASK_INTERRUPTIBLE); 843 if (sk->sk_state != TCP_SYN_SENT) 844 break; 845 if (!signal_pending(current)) { 846 release_sock(sk); 847 schedule(); 848 lock_sock(sk); 849 continue; 850 } 851 err = -ERESTARTSYS; 852 break; 853 } 854 finish_wait(sk_sleep(sk), &wait); 855 856 if (err) 857 goto out_release; 858 } 859 860 if (sk->sk_state != TCP_ESTABLISHED) { 861 sock->state = SS_UNCONNECTED; 862 err = sock_error(sk); /* Always set at this point */ 863 goto out_release; 864 } 865 866 sock->state = SS_CONNECTED; 867 868 out_release: 869 release_sock(sk); 870 871 return err; 872 } 873 874 static int rose_accept(struct socket *sock, struct socket *newsock, int flags) 875 { 876 struct sk_buff *skb; 877 struct sock *newsk; 878 DEFINE_WAIT(wait); 879 struct sock *sk; 880 int err = 0; 881 882 if ((sk = sock->sk) == NULL) 883 return -EINVAL; 884 885 lock_sock(sk); 886 if (sk->sk_type != SOCK_SEQPACKET) { 887 err = -EOPNOTSUPP; 888 goto out_release; 889 } 890 891 if (sk->sk_state != TCP_LISTEN) { 892 err = -EINVAL; 893 goto out_release; 894 } 895 896 /* 897 * The write queue this time is holding sockets ready to use 898 * hooked into the SABM we saved 899 */ 900 for (;;) { 901 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); 902 903 skb = skb_dequeue(&sk->sk_receive_queue); 904 if (skb) 905 break; 906 907 if (flags & O_NONBLOCK) { 908 err = -EWOULDBLOCK; 909 break; 910 } 911 if (!signal_pending(current)) { 912 release_sock(sk); 913 schedule(); 914 lock_sock(sk); 915 continue; 916 } 917 err = -ERESTARTSYS; 918 break; 919 } 920 finish_wait(sk_sleep(sk), &wait); 921 if (err) 922 goto out_release; 923 924 newsk = skb->sk; 925 sock_graft(newsk, newsock); 926 927 /* Now attach up the new socket */ 928 skb->sk = NULL; 929 kfree_skb(skb); 930 sk->sk_ack_backlog--; 931 932 out_release: 933 release_sock(sk); 934 935 return err; 936 } 937 938 static int rose_getname(struct socket *sock, struct sockaddr *uaddr, 939 int *uaddr_len, int peer) 940 { 941 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; 942 struct sock *sk = sock->sk; 943 struct rose_sock *rose = rose_sk(sk); 944 int n; 945 946 memset(srose, 0, sizeof(*srose)); 947 if (peer != 0) { 948 if (sk->sk_state != TCP_ESTABLISHED) 949 return -ENOTCONN; 950 srose->srose_family = AF_ROSE; 951 srose->srose_addr = rose->dest_addr; 952 srose->srose_call = rose->dest_call; 953 srose->srose_ndigis = rose->dest_ndigis; 954 for (n = 0; n < rose->dest_ndigis; n++) 955 srose->srose_digis[n] = rose->dest_digis[n]; 956 } else { 957 srose->srose_family = AF_ROSE; 958 srose->srose_addr = rose->source_addr; 959 srose->srose_call = rose->source_call; 960 srose->srose_ndigis = rose->source_ndigis; 961 for (n = 0; n < rose->source_ndigis; n++) 962 srose->srose_digis[n] = rose->source_digis[n]; 963 } 964 965 *uaddr_len = sizeof(struct full_sockaddr_rose); 966 return 0; 967 } 968 969 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) 970 { 971 struct sock *sk; 972 struct sock *make; 973 struct rose_sock *make_rose; 974 struct rose_facilities_struct facilities; 975 int n; 976 977 skb->sk = NULL; /* Initially we don't know who it's for */ 978 979 /* 980 * skb->data points to the rose frame start 981 */ 982 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); 983 984 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF, 985 skb->len - ROSE_CALL_REQ_FACILITIES_OFF, 986 &facilities)) { 987 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); 988 return 0; 989 } 990 991 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); 992 993 /* 994 * We can't accept the Call Request. 995 */ 996 if (sk == NULL || sk_acceptq_is_full(sk) || 997 (make = rose_make_new(sk)) == NULL) { 998 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); 999 return 0; 1000 } 1001 1002 skb->sk = make; 1003 make->sk_state = TCP_ESTABLISHED; 1004 make_rose = rose_sk(make); 1005 1006 make_rose->lci = lci; 1007 make_rose->dest_addr = facilities.dest_addr; 1008 make_rose->dest_call = facilities.dest_call; 1009 make_rose->dest_ndigis = facilities.dest_ndigis; 1010 for (n = 0 ; n < facilities.dest_ndigis ; n++) 1011 make_rose->dest_digis[n] = facilities.dest_digis[n]; 1012 make_rose->source_addr = facilities.source_addr; 1013 make_rose->source_call = facilities.source_call; 1014 make_rose->source_ndigis = facilities.source_ndigis; 1015 for (n = 0 ; n < facilities.source_ndigis ; n++) 1016 make_rose->source_digis[n] = facilities.source_digis[n]; 1017 make_rose->neighbour = neigh; 1018 make_rose->device = dev; 1019 make_rose->facilities = facilities; 1020 1021 make_rose->neighbour->use++; 1022 1023 if (rose_sk(sk)->defer) { 1024 make_rose->state = ROSE_STATE_5; 1025 } else { 1026 rose_write_internal(make, ROSE_CALL_ACCEPTED); 1027 make_rose->state = ROSE_STATE_3; 1028 rose_start_idletimer(make); 1029 } 1030 1031 make_rose->condition = 0x00; 1032 make_rose->vs = 0; 1033 make_rose->va = 0; 1034 make_rose->vr = 0; 1035 make_rose->vl = 0; 1036 sk->sk_ack_backlog++; 1037 1038 rose_insert_socket(make); 1039 1040 skb_queue_head(&sk->sk_receive_queue, skb); 1041 1042 rose_start_heartbeat(make); 1043 1044 if (!sock_flag(sk, SOCK_DEAD)) 1045 sk->sk_data_ready(sk); 1046 1047 return 1; 1048 } 1049 1050 static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) 1051 { 1052 struct sock *sk = sock->sk; 1053 struct rose_sock *rose = rose_sk(sk); 1054 DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name); 1055 int err; 1056 struct full_sockaddr_rose srose; 1057 struct sk_buff *skb; 1058 unsigned char *asmptr; 1059 int n, size, qbit = 0; 1060 1061 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) 1062 return -EINVAL; 1063 1064 if (sock_flag(sk, SOCK_ZAPPED)) 1065 return -EADDRNOTAVAIL; 1066 1067 if (sk->sk_shutdown & SEND_SHUTDOWN) { 1068 send_sig(SIGPIPE, current, 0); 1069 return -EPIPE; 1070 } 1071 1072 if (rose->neighbour == NULL || rose->device == NULL) 1073 return -ENETUNREACH; 1074 1075 if (usrose != NULL) { 1076 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) 1077 return -EINVAL; 1078 memset(&srose, 0, sizeof(struct full_sockaddr_rose)); 1079 memcpy(&srose, usrose, msg->msg_namelen); 1080 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || 1081 ax25cmp(&rose->dest_call, &srose.srose_call) != 0) 1082 return -EISCONN; 1083 if (srose.srose_ndigis != rose->dest_ndigis) 1084 return -EISCONN; 1085 if (srose.srose_ndigis == rose->dest_ndigis) { 1086 for (n = 0 ; n < srose.srose_ndigis ; n++) 1087 if (ax25cmp(&rose->dest_digis[n], 1088 &srose.srose_digis[n])) 1089 return -EISCONN; 1090 } 1091 if (srose.srose_family != AF_ROSE) 1092 return -EINVAL; 1093 } else { 1094 if (sk->sk_state != TCP_ESTABLISHED) 1095 return -ENOTCONN; 1096 1097 srose.srose_family = AF_ROSE; 1098 srose.srose_addr = rose->dest_addr; 1099 srose.srose_call = rose->dest_call; 1100 srose.srose_ndigis = rose->dest_ndigis; 1101 for (n = 0 ; n < rose->dest_ndigis ; n++) 1102 srose.srose_digis[n] = rose->dest_digis[n]; 1103 } 1104 1105 /* Build a packet */ 1106 /* Sanity check the packet size */ 1107 if (len > 65535) 1108 return -EMSGSIZE; 1109 1110 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; 1111 1112 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) 1113 return err; 1114 1115 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); 1116 1117 /* 1118 * Put the data on the end 1119 */ 1120 1121 skb_reset_transport_header(skb); 1122 skb_put(skb, len); 1123 1124 err = memcpy_from_msg(skb_transport_header(skb), msg, len); 1125 if (err) { 1126 kfree_skb(skb); 1127 return err; 1128 } 1129 1130 /* 1131 * If the Q BIT Include socket option is in force, the first 1132 * byte of the user data is the logical value of the Q Bit. 1133 */ 1134 if (rose->qbitincl) { 1135 qbit = skb->data[0]; 1136 skb_pull(skb, 1); 1137 } 1138 1139 /* 1140 * Push down the ROSE header 1141 */ 1142 asmptr = skb_push(skb, ROSE_MIN_LEN); 1143 1144 /* Build a ROSE Network header */ 1145 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; 1146 asmptr[1] = (rose->lci >> 0) & 0xFF; 1147 asmptr[2] = ROSE_DATA; 1148 1149 if (qbit) 1150 asmptr[0] |= ROSE_Q_BIT; 1151 1152 if (sk->sk_state != TCP_ESTABLISHED) { 1153 kfree_skb(skb); 1154 return -ENOTCONN; 1155 } 1156 1157 #ifdef M_BIT 1158 #define ROSE_PACLEN (256-ROSE_MIN_LEN) 1159 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { 1160 unsigned char header[ROSE_MIN_LEN]; 1161 struct sk_buff *skbn; 1162 int frontlen; 1163 int lg; 1164 1165 /* Save a copy of the Header */ 1166 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); 1167 skb_pull(skb, ROSE_MIN_LEN); 1168 1169 frontlen = skb_headroom(skb); 1170 1171 while (skb->len > 0) { 1172 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { 1173 kfree_skb(skb); 1174 return err; 1175 } 1176 1177 skbn->sk = sk; 1178 skbn->free = 1; 1179 skbn->arp = 1; 1180 1181 skb_reserve(skbn, frontlen); 1182 1183 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; 1184 1185 /* Copy the user data */ 1186 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); 1187 skb_pull(skb, lg); 1188 1189 /* Duplicate the Header */ 1190 skb_push(skbn, ROSE_MIN_LEN); 1191 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); 1192 1193 if (skb->len > 0) 1194 skbn->data[2] |= M_BIT; 1195 1196 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ 1197 } 1198 1199 skb->free = 1; 1200 kfree_skb(skb); 1201 } else { 1202 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ 1203 } 1204 #else 1205 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ 1206 #endif 1207 1208 rose_kick(sk); 1209 1210 return len; 1211 } 1212 1213 1214 static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, 1215 int flags) 1216 { 1217 struct sock *sk = sock->sk; 1218 struct rose_sock *rose = rose_sk(sk); 1219 size_t copied; 1220 unsigned char *asmptr; 1221 struct sk_buff *skb; 1222 int n, er, qbit; 1223 1224 /* 1225 * This works for seqpacket too. The receiver has ordered the queue for 1226 * us! We do one quick check first though 1227 */ 1228 if (sk->sk_state != TCP_ESTABLISHED) 1229 return -ENOTCONN; 1230 1231 /* Now we can treat all alike */ 1232 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) 1233 return er; 1234 1235 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; 1236 1237 skb_pull(skb, ROSE_MIN_LEN); 1238 1239 if (rose->qbitincl) { 1240 asmptr = skb_push(skb, 1); 1241 *asmptr = qbit; 1242 } 1243 1244 skb_reset_transport_header(skb); 1245 copied = skb->len; 1246 1247 if (copied > size) { 1248 copied = size; 1249 msg->msg_flags |= MSG_TRUNC; 1250 } 1251 1252 skb_copy_datagram_msg(skb, 0, msg, copied); 1253 1254 if (msg->msg_name) { 1255 struct sockaddr_rose *srose; 1256 DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose, 1257 msg->msg_name); 1258 1259 memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose)); 1260 srose = msg->msg_name; 1261 srose->srose_family = AF_ROSE; 1262 srose->srose_addr = rose->dest_addr; 1263 srose->srose_call = rose->dest_call; 1264 srose->srose_ndigis = rose->dest_ndigis; 1265 for (n = 0 ; n < rose->dest_ndigis ; n++) 1266 full_srose->srose_digis[n] = rose->dest_digis[n]; 1267 msg->msg_namelen = sizeof(struct full_sockaddr_rose); 1268 } 1269 1270 skb_free_datagram(sk, skb); 1271 1272 return copied; 1273 } 1274 1275 1276 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 1277 { 1278 struct sock *sk = sock->sk; 1279 struct rose_sock *rose = rose_sk(sk); 1280 void __user *argp = (void __user *)arg; 1281 1282 switch (cmd) { 1283 case TIOCOUTQ: { 1284 long amount; 1285 1286 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); 1287 if (amount < 0) 1288 amount = 0; 1289 return put_user(amount, (unsigned int __user *) argp); 1290 } 1291 1292 case TIOCINQ: { 1293 struct sk_buff *skb; 1294 long amount = 0L; 1295 /* These two are safe on a single CPU system as only user tasks fiddle here */ 1296 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) 1297 amount = skb->len; 1298 return put_user(amount, (unsigned int __user *) argp); 1299 } 1300 1301 case SIOCGSTAMP: 1302 return sock_get_timestamp(sk, (struct timeval __user *) argp); 1303 1304 case SIOCGSTAMPNS: 1305 return sock_get_timestampns(sk, (struct timespec __user *) argp); 1306 1307 case SIOCGIFADDR: 1308 case SIOCSIFADDR: 1309 case SIOCGIFDSTADDR: 1310 case SIOCSIFDSTADDR: 1311 case SIOCGIFBRDADDR: 1312 case SIOCSIFBRDADDR: 1313 case SIOCGIFNETMASK: 1314 case SIOCSIFNETMASK: 1315 case SIOCGIFMETRIC: 1316 case SIOCSIFMETRIC: 1317 return -EINVAL; 1318 1319 case SIOCADDRT: 1320 case SIOCDELRT: 1321 case SIOCRSCLRRT: 1322 if (!capable(CAP_NET_ADMIN)) 1323 return -EPERM; 1324 return rose_rt_ioctl(cmd, argp); 1325 1326 case SIOCRSGCAUSE: { 1327 struct rose_cause_struct rose_cause; 1328 rose_cause.cause = rose->cause; 1329 rose_cause.diagnostic = rose->diagnostic; 1330 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; 1331 } 1332 1333 case SIOCRSSCAUSE: { 1334 struct rose_cause_struct rose_cause; 1335 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) 1336 return -EFAULT; 1337 rose->cause = rose_cause.cause; 1338 rose->diagnostic = rose_cause.diagnostic; 1339 return 0; 1340 } 1341 1342 case SIOCRSSL2CALL: 1343 if (!capable(CAP_NET_ADMIN)) return -EPERM; 1344 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1345 ax25_listen_release(&rose_callsign, NULL); 1346 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) 1347 return -EFAULT; 1348 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1349 return ax25_listen_register(&rose_callsign, NULL); 1350 1351 return 0; 1352 1353 case SIOCRSGL2CALL: 1354 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; 1355 1356 case SIOCRSACCEPT: 1357 if (rose->state == ROSE_STATE_5) { 1358 rose_write_internal(sk, ROSE_CALL_ACCEPTED); 1359 rose_start_idletimer(sk); 1360 rose->condition = 0x00; 1361 rose->vs = 0; 1362 rose->va = 0; 1363 rose->vr = 0; 1364 rose->vl = 0; 1365 rose->state = ROSE_STATE_3; 1366 } 1367 return 0; 1368 1369 default: 1370 return -ENOIOCTLCMD; 1371 } 1372 1373 return 0; 1374 } 1375 1376 #ifdef CONFIG_PROC_FS 1377 static void *rose_info_start(struct seq_file *seq, loff_t *pos) 1378 __acquires(rose_list_lock) 1379 { 1380 spin_lock_bh(&rose_list_lock); 1381 return seq_hlist_start_head(&rose_list, *pos); 1382 } 1383 1384 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) 1385 { 1386 return seq_hlist_next(v, &rose_list, pos); 1387 } 1388 1389 static void rose_info_stop(struct seq_file *seq, void *v) 1390 __releases(rose_list_lock) 1391 { 1392 spin_unlock_bh(&rose_list_lock); 1393 } 1394 1395 static int rose_info_show(struct seq_file *seq, void *v) 1396 { 1397 char buf[11], rsbuf[11]; 1398 1399 if (v == SEQ_START_TOKEN) 1400 seq_puts(seq, 1401 "dest_addr dest_call src_addr src_call dev lci neigh st vs vr va t t1 t2 t3 hb idle Snd-Q Rcv-Q inode\n"); 1402 1403 else { 1404 struct sock *s = sk_entry(v); 1405 struct rose_sock *rose = rose_sk(s); 1406 const char *devname, *callsign; 1407 const struct net_device *dev = rose->device; 1408 1409 if (!dev) 1410 devname = "???"; 1411 else 1412 devname = dev->name; 1413 1414 seq_printf(seq, "%-10s %-9s ", 1415 rose2asc(rsbuf, &rose->dest_addr), 1416 ax2asc(buf, &rose->dest_call)); 1417 1418 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) 1419 callsign = "??????-?"; 1420 else 1421 callsign = ax2asc(buf, &rose->source_call); 1422 1423 seq_printf(seq, 1424 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", 1425 rose2asc(rsbuf, &rose->source_addr), 1426 callsign, 1427 devname, 1428 rose->lci & 0x0FFF, 1429 (rose->neighbour) ? rose->neighbour->number : 0, 1430 rose->state, 1431 rose->vs, 1432 rose->vr, 1433 rose->va, 1434 ax25_display_timer(&rose->timer) / HZ, 1435 rose->t1 / HZ, 1436 rose->t2 / HZ, 1437 rose->t3 / HZ, 1438 rose->hb / HZ, 1439 ax25_display_timer(&rose->idletimer) / (60 * HZ), 1440 rose->idle / (60 * HZ), 1441 sk_wmem_alloc_get(s), 1442 sk_rmem_alloc_get(s), 1443 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); 1444 } 1445 1446 return 0; 1447 } 1448 1449 static const struct seq_operations rose_info_seqops = { 1450 .start = rose_info_start, 1451 .next = rose_info_next, 1452 .stop = rose_info_stop, 1453 .show = rose_info_show, 1454 }; 1455 1456 static int rose_info_open(struct inode *inode, struct file *file) 1457 { 1458 return seq_open(file, &rose_info_seqops); 1459 } 1460 1461 static const struct file_operations rose_info_fops = { 1462 .owner = THIS_MODULE, 1463 .open = rose_info_open, 1464 .read = seq_read, 1465 .llseek = seq_lseek, 1466 .release = seq_release, 1467 }; 1468 #endif /* CONFIG_PROC_FS */ 1469 1470 static const struct net_proto_family rose_family_ops = { 1471 .family = PF_ROSE, 1472 .create = rose_create, 1473 .owner = THIS_MODULE, 1474 }; 1475 1476 static const struct proto_ops rose_proto_ops = { 1477 .family = PF_ROSE, 1478 .owner = THIS_MODULE, 1479 .release = rose_release, 1480 .bind = rose_bind, 1481 .connect = rose_connect, 1482 .socketpair = sock_no_socketpair, 1483 .accept = rose_accept, 1484 .getname = rose_getname, 1485 .poll = datagram_poll, 1486 .ioctl = rose_ioctl, 1487 .listen = rose_listen, 1488 .shutdown = sock_no_shutdown, 1489 .setsockopt = rose_setsockopt, 1490 .getsockopt = rose_getsockopt, 1491 .sendmsg = rose_sendmsg, 1492 .recvmsg = rose_recvmsg, 1493 .mmap = sock_no_mmap, 1494 .sendpage = sock_no_sendpage, 1495 }; 1496 1497 static struct notifier_block rose_dev_notifier = { 1498 .notifier_call = rose_device_event, 1499 }; 1500 1501 static struct net_device **dev_rose; 1502 1503 static struct ax25_protocol rose_pid = { 1504 .pid = AX25_P_ROSE, 1505 .func = rose_route_frame 1506 }; 1507 1508 static struct ax25_linkfail rose_linkfail_notifier = { 1509 .func = rose_link_failed 1510 }; 1511 1512 static int __init rose_proto_init(void) 1513 { 1514 int i; 1515 int rc; 1516 1517 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { 1518 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n"); 1519 rc = -EINVAL; 1520 goto out; 1521 } 1522 1523 rc = proto_register(&rose_proto, 0); 1524 if (rc != 0) 1525 goto out; 1526 1527 rose_callsign = null_ax25_address; 1528 1529 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL); 1530 if (dev_rose == NULL) { 1531 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); 1532 rc = -ENOMEM; 1533 goto out_proto_unregister; 1534 } 1535 1536 for (i = 0; i < rose_ndevs; i++) { 1537 struct net_device *dev; 1538 char name[IFNAMSIZ]; 1539 1540 sprintf(name, "rose%d", i); 1541 dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup); 1542 if (!dev) { 1543 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); 1544 rc = -ENOMEM; 1545 goto fail; 1546 } 1547 rc = register_netdev(dev); 1548 if (rc) { 1549 printk(KERN_ERR "ROSE: netdevice registration failed\n"); 1550 free_netdev(dev); 1551 goto fail; 1552 } 1553 rose_set_lockdep_key(dev); 1554 dev_rose[i] = dev; 1555 } 1556 1557 sock_register(&rose_family_ops); 1558 register_netdevice_notifier(&rose_dev_notifier); 1559 1560 ax25_register_pid(&rose_pid); 1561 ax25_linkfail_register(&rose_linkfail_notifier); 1562 1563 #ifdef CONFIG_SYSCTL 1564 rose_register_sysctl(); 1565 #endif 1566 rose_loopback_init(); 1567 1568 rose_add_loopback_neigh(); 1569 1570 proc_create("rose", S_IRUGO, init_net.proc_net, &rose_info_fops); 1571 proc_create("rose_neigh", S_IRUGO, init_net.proc_net, 1572 &rose_neigh_fops); 1573 proc_create("rose_nodes", S_IRUGO, init_net.proc_net, 1574 &rose_nodes_fops); 1575 proc_create("rose_routes", S_IRUGO, init_net.proc_net, 1576 &rose_routes_fops); 1577 out: 1578 return rc; 1579 fail: 1580 while (--i >= 0) { 1581 unregister_netdev(dev_rose[i]); 1582 free_netdev(dev_rose[i]); 1583 } 1584 kfree(dev_rose); 1585 out_proto_unregister: 1586 proto_unregister(&rose_proto); 1587 goto out; 1588 } 1589 module_init(rose_proto_init); 1590 1591 module_param(rose_ndevs, int, 0); 1592 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); 1593 1594 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); 1595 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); 1596 MODULE_LICENSE("GPL"); 1597 MODULE_ALIAS_NETPROTO(PF_ROSE); 1598 1599 static void __exit rose_exit(void) 1600 { 1601 int i; 1602 1603 remove_proc_entry("rose", init_net.proc_net); 1604 remove_proc_entry("rose_neigh", init_net.proc_net); 1605 remove_proc_entry("rose_nodes", init_net.proc_net); 1606 remove_proc_entry("rose_routes", init_net.proc_net); 1607 rose_loopback_clear(); 1608 1609 rose_rt_free(); 1610 1611 ax25_protocol_release(AX25_P_ROSE); 1612 ax25_linkfail_release(&rose_linkfail_notifier); 1613 1614 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1615 ax25_listen_release(&rose_callsign, NULL); 1616 1617 #ifdef CONFIG_SYSCTL 1618 rose_unregister_sysctl(); 1619 #endif 1620 unregister_netdevice_notifier(&rose_dev_notifier); 1621 1622 sock_unregister(PF_ROSE); 1623 1624 for (i = 0; i < rose_ndevs; i++) { 1625 struct net_device *dev = dev_rose[i]; 1626 1627 if (dev) { 1628 unregister_netdev(dev); 1629 free_netdev(dev); 1630 } 1631 } 1632 1633 kfree(dev_rose); 1634 proto_unregister(&rose_proto); 1635 } 1636 1637 module_exit(rose_exit); 1638