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/signal.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(struct timer_list *t) 322 { 323 struct sock *sk = from_timer(sk, t, sk_timer); 324 325 rose_destroy_socket(sk); 326 } 327 328 /* 329 * This is called from user mode and the timers. Thus it protects itself 330 * against interrupt users but doesn't worry about being called during 331 * work. Once it is removed from the queue no interrupt or bottom half 332 * will touch it and we are (fairly 8-) ) safe. 333 */ 334 void rose_destroy_socket(struct sock *sk) 335 { 336 struct sk_buff *skb; 337 338 rose_remove_socket(sk); 339 rose_stop_heartbeat(sk); 340 rose_stop_idletimer(sk); 341 rose_stop_timer(sk); 342 343 rose_clear_queues(sk); /* Flush the queues */ 344 345 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { 346 if (skb->sk != sk) { /* A pending connection */ 347 /* Queue the unaccepted socket for death */ 348 sock_set_flag(skb->sk, SOCK_DEAD); 349 rose_start_heartbeat(skb->sk); 350 rose_sk(skb->sk)->state = ROSE_STATE_0; 351 } 352 353 kfree_skb(skb); 354 } 355 356 if (sk_has_allocations(sk)) { 357 /* Defer: outstanding buffers */ 358 timer_setup(&sk->sk_timer, rose_destroy_timer, 0); 359 sk->sk_timer.expires = jiffies + 10 * HZ; 360 add_timer(&sk->sk_timer); 361 } else 362 sock_put(sk); 363 } 364 365 /* 366 * Handling for system calls applied via the various interfaces to a 367 * ROSE socket object. 368 */ 369 370 static int rose_setsockopt(struct socket *sock, int level, int optname, 371 char __user *optval, unsigned int optlen) 372 { 373 struct sock *sk = sock->sk; 374 struct rose_sock *rose = rose_sk(sk); 375 int opt; 376 377 if (level != SOL_ROSE) 378 return -ENOPROTOOPT; 379 380 if (optlen < sizeof(int)) 381 return -EINVAL; 382 383 if (get_user(opt, (int __user *)optval)) 384 return -EFAULT; 385 386 switch (optname) { 387 case ROSE_DEFER: 388 rose->defer = opt ? 1 : 0; 389 return 0; 390 391 case ROSE_T1: 392 if (opt < 1) 393 return -EINVAL; 394 rose->t1 = opt * HZ; 395 return 0; 396 397 case ROSE_T2: 398 if (opt < 1) 399 return -EINVAL; 400 rose->t2 = opt * HZ; 401 return 0; 402 403 case ROSE_T3: 404 if (opt < 1) 405 return -EINVAL; 406 rose->t3 = opt * HZ; 407 return 0; 408 409 case ROSE_HOLDBACK: 410 if (opt < 1) 411 return -EINVAL; 412 rose->hb = opt * HZ; 413 return 0; 414 415 case ROSE_IDLE: 416 if (opt < 0) 417 return -EINVAL; 418 rose->idle = opt * 60 * HZ; 419 return 0; 420 421 case ROSE_QBITINCL: 422 rose->qbitincl = opt ? 1 : 0; 423 return 0; 424 425 default: 426 return -ENOPROTOOPT; 427 } 428 } 429 430 static int rose_getsockopt(struct socket *sock, int level, int optname, 431 char __user *optval, int __user *optlen) 432 { 433 struct sock *sk = sock->sk; 434 struct rose_sock *rose = rose_sk(sk); 435 int val = 0; 436 int len; 437 438 if (level != SOL_ROSE) 439 return -ENOPROTOOPT; 440 441 if (get_user(len, optlen)) 442 return -EFAULT; 443 444 if (len < 0) 445 return -EINVAL; 446 447 switch (optname) { 448 case ROSE_DEFER: 449 val = rose->defer; 450 break; 451 452 case ROSE_T1: 453 val = rose->t1 / HZ; 454 break; 455 456 case ROSE_T2: 457 val = rose->t2 / HZ; 458 break; 459 460 case ROSE_T3: 461 val = rose->t3 / HZ; 462 break; 463 464 case ROSE_HOLDBACK: 465 val = rose->hb / HZ; 466 break; 467 468 case ROSE_IDLE: 469 val = rose->idle / (60 * HZ); 470 break; 471 472 case ROSE_QBITINCL: 473 val = rose->qbitincl; 474 break; 475 476 default: 477 return -ENOPROTOOPT; 478 } 479 480 len = min_t(unsigned int, len, sizeof(int)); 481 482 if (put_user(len, optlen)) 483 return -EFAULT; 484 485 return copy_to_user(optval, &val, len) ? -EFAULT : 0; 486 } 487 488 static int rose_listen(struct socket *sock, int backlog) 489 { 490 struct sock *sk = sock->sk; 491 492 if (sk->sk_state != TCP_LISTEN) { 493 struct rose_sock *rose = rose_sk(sk); 494 495 rose->dest_ndigis = 0; 496 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); 497 memset(&rose->dest_call, 0, AX25_ADDR_LEN); 498 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); 499 sk->sk_max_ack_backlog = backlog; 500 sk->sk_state = TCP_LISTEN; 501 return 0; 502 } 503 504 return -EOPNOTSUPP; 505 } 506 507 static struct proto rose_proto = { 508 .name = "ROSE", 509 .owner = THIS_MODULE, 510 .obj_size = sizeof(struct rose_sock), 511 }; 512 513 static int rose_create(struct net *net, struct socket *sock, int protocol, 514 int kern) 515 { 516 struct sock *sk; 517 struct rose_sock *rose; 518 519 if (!net_eq(net, &init_net)) 520 return -EAFNOSUPPORT; 521 522 if (sock->type != SOCK_SEQPACKET || protocol != 0) 523 return -ESOCKTNOSUPPORT; 524 525 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern); 526 if (sk == NULL) 527 return -ENOMEM; 528 529 rose = rose_sk(sk); 530 531 sock_init_data(sock, sk); 532 533 skb_queue_head_init(&rose->ack_queue); 534 #ifdef M_BIT 535 skb_queue_head_init(&rose->frag_queue); 536 rose->fraglen = 0; 537 #endif 538 539 sock->ops = &rose_proto_ops; 540 sk->sk_protocol = protocol; 541 542 timer_setup(&rose->timer, NULL, 0); 543 timer_setup(&rose->idletimer, NULL, 0); 544 545 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); 546 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); 547 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); 548 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); 549 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); 550 551 rose->state = ROSE_STATE_0; 552 553 return 0; 554 } 555 556 static struct sock *rose_make_new(struct sock *osk) 557 { 558 struct sock *sk; 559 struct rose_sock *rose, *orose; 560 561 if (osk->sk_type != SOCK_SEQPACKET) 562 return NULL; 563 564 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto, 0); 565 if (sk == NULL) 566 return NULL; 567 568 rose = rose_sk(sk); 569 570 sock_init_data(NULL, sk); 571 572 skb_queue_head_init(&rose->ack_queue); 573 #ifdef M_BIT 574 skb_queue_head_init(&rose->frag_queue); 575 rose->fraglen = 0; 576 #endif 577 578 sk->sk_type = osk->sk_type; 579 sk->sk_priority = osk->sk_priority; 580 sk->sk_protocol = osk->sk_protocol; 581 sk->sk_rcvbuf = osk->sk_rcvbuf; 582 sk->sk_sndbuf = osk->sk_sndbuf; 583 sk->sk_state = TCP_ESTABLISHED; 584 sock_copy_flags(sk, osk); 585 586 timer_setup(&rose->timer, NULL, 0); 587 timer_setup(&rose->idletimer, NULL, 0); 588 589 orose = rose_sk(osk); 590 rose->t1 = orose->t1; 591 rose->t2 = orose->t2; 592 rose->t3 = orose->t3; 593 rose->hb = orose->hb; 594 rose->idle = orose->idle; 595 rose->defer = orose->defer; 596 rose->device = orose->device; 597 rose->qbitincl = orose->qbitincl; 598 599 return sk; 600 } 601 602 static int rose_release(struct socket *sock) 603 { 604 struct sock *sk = sock->sk; 605 struct rose_sock *rose; 606 607 if (sk == NULL) return 0; 608 609 sock_hold(sk); 610 sock_orphan(sk); 611 lock_sock(sk); 612 rose = rose_sk(sk); 613 614 switch (rose->state) { 615 case ROSE_STATE_0: 616 release_sock(sk); 617 rose_disconnect(sk, 0, -1, -1); 618 lock_sock(sk); 619 rose_destroy_socket(sk); 620 break; 621 622 case ROSE_STATE_2: 623 rose->neighbour->use--; 624 release_sock(sk); 625 rose_disconnect(sk, 0, -1, -1); 626 lock_sock(sk); 627 rose_destroy_socket(sk); 628 break; 629 630 case ROSE_STATE_1: 631 case ROSE_STATE_3: 632 case ROSE_STATE_4: 633 case ROSE_STATE_5: 634 rose_clear_queues(sk); 635 rose_stop_idletimer(sk); 636 rose_write_internal(sk, ROSE_CLEAR_REQUEST); 637 rose_start_t3timer(sk); 638 rose->state = ROSE_STATE_2; 639 sk->sk_state = TCP_CLOSE; 640 sk->sk_shutdown |= SEND_SHUTDOWN; 641 sk->sk_state_change(sk); 642 sock_set_flag(sk, SOCK_DEAD); 643 sock_set_flag(sk, SOCK_DESTROY); 644 break; 645 646 default: 647 break; 648 } 649 650 sock->sk = NULL; 651 release_sock(sk); 652 sock_put(sk); 653 654 return 0; 655 } 656 657 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) 658 { 659 struct sock *sk = sock->sk; 660 struct rose_sock *rose = rose_sk(sk); 661 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 662 struct net_device *dev; 663 ax25_address *source; 664 ax25_uid_assoc *user; 665 int n; 666 667 if (!sock_flag(sk, SOCK_ZAPPED)) 668 return -EINVAL; 669 670 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 671 return -EINVAL; 672 673 if (addr->srose_family != AF_ROSE) 674 return -EINVAL; 675 676 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 677 return -EINVAL; 678 679 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 680 return -EINVAL; 681 682 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) 683 return -EADDRNOTAVAIL; 684 685 source = &addr->srose_call; 686 687 user = ax25_findbyuid(current_euid()); 688 if (user) { 689 rose->source_call = user->call; 690 ax25_uid_put(user); 691 } else { 692 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) 693 return -EACCES; 694 rose->source_call = *source; 695 } 696 697 rose->source_addr = addr->srose_addr; 698 rose->device = dev; 699 rose->source_ndigis = addr->srose_ndigis; 700 701 if (addr_len == sizeof(struct full_sockaddr_rose)) { 702 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 703 for (n = 0 ; n < addr->srose_ndigis ; n++) 704 rose->source_digis[n] = full_addr->srose_digis[n]; 705 } else { 706 if (rose->source_ndigis == 1) { 707 rose->source_digis[0] = addr->srose_digi; 708 } 709 } 710 711 rose_insert_socket(sk); 712 713 sock_reset_flag(sk, SOCK_ZAPPED); 714 715 return 0; 716 } 717 718 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) 719 { 720 struct sock *sk = sock->sk; 721 struct rose_sock *rose = rose_sk(sk); 722 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 723 unsigned char cause, diagnostic; 724 struct net_device *dev; 725 ax25_uid_assoc *user; 726 int n, err = 0; 727 728 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 729 return -EINVAL; 730 731 if (addr->srose_family != AF_ROSE) 732 return -EINVAL; 733 734 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 735 return -EINVAL; 736 737 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 738 return -EINVAL; 739 740 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ 741 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) 742 return -EINVAL; 743 744 lock_sock(sk); 745 746 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { 747 /* Connect completed during a ERESTARTSYS event */ 748 sock->state = SS_CONNECTED; 749 goto out_release; 750 } 751 752 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { 753 sock->state = SS_UNCONNECTED; 754 err = -ECONNREFUSED; 755 goto out_release; 756 } 757 758 if (sk->sk_state == TCP_ESTABLISHED) { 759 /* No reconnect on a seqpacket socket */ 760 err = -EISCONN; 761 goto out_release; 762 } 763 764 sk->sk_state = TCP_CLOSE; 765 sock->state = SS_UNCONNECTED; 766 767 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, 768 &diagnostic, 0); 769 if (!rose->neighbour) { 770 err = -ENETUNREACH; 771 goto out_release; 772 } 773 774 rose->lci = rose_new_lci(rose->neighbour); 775 if (!rose->lci) { 776 err = -ENETUNREACH; 777 goto out_release; 778 } 779 780 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ 781 sock_reset_flag(sk, SOCK_ZAPPED); 782 783 if ((dev = rose_dev_first()) == NULL) { 784 err = -ENETUNREACH; 785 goto out_release; 786 } 787 788 user = ax25_findbyuid(current_euid()); 789 if (!user) { 790 err = -EINVAL; 791 goto out_release; 792 } 793 794 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); 795 rose->source_call = user->call; 796 rose->device = dev; 797 ax25_uid_put(user); 798 799 rose_insert_socket(sk); /* Finish the bind */ 800 } 801 rose->dest_addr = addr->srose_addr; 802 rose->dest_call = addr->srose_call; 803 rose->rand = ((long)rose & 0xFFFF) + rose->lci; 804 rose->dest_ndigis = addr->srose_ndigis; 805 806 if (addr_len == sizeof(struct full_sockaddr_rose)) { 807 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 808 for (n = 0 ; n < addr->srose_ndigis ; n++) 809 rose->dest_digis[n] = full_addr->srose_digis[n]; 810 } else { 811 if (rose->dest_ndigis == 1) { 812 rose->dest_digis[0] = addr->srose_digi; 813 } 814 } 815 816 /* Move to connecting socket, start sending Connect Requests */ 817 sock->state = SS_CONNECTING; 818 sk->sk_state = TCP_SYN_SENT; 819 820 rose->state = ROSE_STATE_1; 821 822 rose->neighbour->use++; 823 824 rose_write_internal(sk, ROSE_CALL_REQUEST); 825 rose_start_heartbeat(sk); 826 rose_start_t1timer(sk); 827 828 /* Now the loop */ 829 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) { 830 err = -EINPROGRESS; 831 goto out_release; 832 } 833 834 /* 835 * A Connect Ack with Choke or timeout or failed routing will go to 836 * closed. 837 */ 838 if (sk->sk_state == TCP_SYN_SENT) { 839 DEFINE_WAIT(wait); 840 841 for (;;) { 842 prepare_to_wait(sk_sleep(sk), &wait, 843 TASK_INTERRUPTIBLE); 844 if (sk->sk_state != TCP_SYN_SENT) 845 break; 846 if (!signal_pending(current)) { 847 release_sock(sk); 848 schedule(); 849 lock_sock(sk); 850 continue; 851 } 852 err = -ERESTARTSYS; 853 break; 854 } 855 finish_wait(sk_sleep(sk), &wait); 856 857 if (err) 858 goto out_release; 859 } 860 861 if (sk->sk_state != TCP_ESTABLISHED) { 862 sock->state = SS_UNCONNECTED; 863 err = sock_error(sk); /* Always set at this point */ 864 goto out_release; 865 } 866 867 sock->state = SS_CONNECTED; 868 869 out_release: 870 release_sock(sk); 871 872 return err; 873 } 874 875 static int rose_accept(struct socket *sock, struct socket *newsock, int flags, 876 bool kern) 877 { 878 struct sk_buff *skb; 879 struct sock *newsk; 880 DEFINE_WAIT(wait); 881 struct sock *sk; 882 int err = 0; 883 884 if ((sk = sock->sk) == NULL) 885 return -EINVAL; 886 887 lock_sock(sk); 888 if (sk->sk_type != SOCK_SEQPACKET) { 889 err = -EOPNOTSUPP; 890 goto out_release; 891 } 892 893 if (sk->sk_state != TCP_LISTEN) { 894 err = -EINVAL; 895 goto out_release; 896 } 897 898 /* 899 * The write queue this time is holding sockets ready to use 900 * hooked into the SABM we saved 901 */ 902 for (;;) { 903 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); 904 905 skb = skb_dequeue(&sk->sk_receive_queue); 906 if (skb) 907 break; 908 909 if (flags & O_NONBLOCK) { 910 err = -EWOULDBLOCK; 911 break; 912 } 913 if (!signal_pending(current)) { 914 release_sock(sk); 915 schedule(); 916 lock_sock(sk); 917 continue; 918 } 919 err = -ERESTARTSYS; 920 break; 921 } 922 finish_wait(sk_sleep(sk), &wait); 923 if (err) 924 goto out_release; 925 926 newsk = skb->sk; 927 sock_graft(newsk, newsock); 928 929 /* Now attach up the new socket */ 930 skb->sk = NULL; 931 kfree_skb(skb); 932 sk->sk_ack_backlog--; 933 934 out_release: 935 release_sock(sk); 936 937 return err; 938 } 939 940 static int rose_getname(struct socket *sock, struct sockaddr *uaddr, 941 int *uaddr_len, int peer) 942 { 943 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; 944 struct sock *sk = sock->sk; 945 struct rose_sock *rose = rose_sk(sk); 946 int n; 947 948 memset(srose, 0, sizeof(*srose)); 949 if (peer != 0) { 950 if (sk->sk_state != TCP_ESTABLISHED) 951 return -ENOTCONN; 952 srose->srose_family = AF_ROSE; 953 srose->srose_addr = rose->dest_addr; 954 srose->srose_call = rose->dest_call; 955 srose->srose_ndigis = rose->dest_ndigis; 956 for (n = 0; n < rose->dest_ndigis; n++) 957 srose->srose_digis[n] = rose->dest_digis[n]; 958 } else { 959 srose->srose_family = AF_ROSE; 960 srose->srose_addr = rose->source_addr; 961 srose->srose_call = rose->source_call; 962 srose->srose_ndigis = rose->source_ndigis; 963 for (n = 0; n < rose->source_ndigis; n++) 964 srose->srose_digis[n] = rose->source_digis[n]; 965 } 966 967 *uaddr_len = sizeof(struct full_sockaddr_rose); 968 return 0; 969 } 970 971 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) 972 { 973 struct sock *sk; 974 struct sock *make; 975 struct rose_sock *make_rose; 976 struct rose_facilities_struct facilities; 977 int n; 978 979 skb->sk = NULL; /* Initially we don't know who it's for */ 980 981 /* 982 * skb->data points to the rose frame start 983 */ 984 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); 985 986 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF, 987 skb->len - ROSE_CALL_REQ_FACILITIES_OFF, 988 &facilities)) { 989 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); 990 return 0; 991 } 992 993 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); 994 995 /* 996 * We can't accept the Call Request. 997 */ 998 if (sk == NULL || sk_acceptq_is_full(sk) || 999 (make = rose_make_new(sk)) == NULL) { 1000 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); 1001 return 0; 1002 } 1003 1004 skb->sk = make; 1005 make->sk_state = TCP_ESTABLISHED; 1006 make_rose = rose_sk(make); 1007 1008 make_rose->lci = lci; 1009 make_rose->dest_addr = facilities.dest_addr; 1010 make_rose->dest_call = facilities.dest_call; 1011 make_rose->dest_ndigis = facilities.dest_ndigis; 1012 for (n = 0 ; n < facilities.dest_ndigis ; n++) 1013 make_rose->dest_digis[n] = facilities.dest_digis[n]; 1014 make_rose->source_addr = facilities.source_addr; 1015 make_rose->source_call = facilities.source_call; 1016 make_rose->source_ndigis = facilities.source_ndigis; 1017 for (n = 0 ; n < facilities.source_ndigis ; n++) 1018 make_rose->source_digis[n] = facilities.source_digis[n]; 1019 make_rose->neighbour = neigh; 1020 make_rose->device = dev; 1021 make_rose->facilities = facilities; 1022 1023 make_rose->neighbour->use++; 1024 1025 if (rose_sk(sk)->defer) { 1026 make_rose->state = ROSE_STATE_5; 1027 } else { 1028 rose_write_internal(make, ROSE_CALL_ACCEPTED); 1029 make_rose->state = ROSE_STATE_3; 1030 rose_start_idletimer(make); 1031 } 1032 1033 make_rose->condition = 0x00; 1034 make_rose->vs = 0; 1035 make_rose->va = 0; 1036 make_rose->vr = 0; 1037 make_rose->vl = 0; 1038 sk->sk_ack_backlog++; 1039 1040 rose_insert_socket(make); 1041 1042 skb_queue_head(&sk->sk_receive_queue, skb); 1043 1044 rose_start_heartbeat(make); 1045 1046 if (!sock_flag(sk, SOCK_DEAD)) 1047 sk->sk_data_ready(sk); 1048 1049 return 1; 1050 } 1051 1052 static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) 1053 { 1054 struct sock *sk = sock->sk; 1055 struct rose_sock *rose = rose_sk(sk); 1056 DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name); 1057 int err; 1058 struct full_sockaddr_rose srose; 1059 struct sk_buff *skb; 1060 unsigned char *asmptr; 1061 int n, size, qbit = 0; 1062 1063 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) 1064 return -EINVAL; 1065 1066 if (sock_flag(sk, SOCK_ZAPPED)) 1067 return -EADDRNOTAVAIL; 1068 1069 if (sk->sk_shutdown & SEND_SHUTDOWN) { 1070 send_sig(SIGPIPE, current, 0); 1071 return -EPIPE; 1072 } 1073 1074 if (rose->neighbour == NULL || rose->device == NULL) 1075 return -ENETUNREACH; 1076 1077 if (usrose != NULL) { 1078 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) 1079 return -EINVAL; 1080 memset(&srose, 0, sizeof(struct full_sockaddr_rose)); 1081 memcpy(&srose, usrose, msg->msg_namelen); 1082 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || 1083 ax25cmp(&rose->dest_call, &srose.srose_call) != 0) 1084 return -EISCONN; 1085 if (srose.srose_ndigis != rose->dest_ndigis) 1086 return -EISCONN; 1087 if (srose.srose_ndigis == rose->dest_ndigis) { 1088 for (n = 0 ; n < srose.srose_ndigis ; n++) 1089 if (ax25cmp(&rose->dest_digis[n], 1090 &srose.srose_digis[n])) 1091 return -EISCONN; 1092 } 1093 if (srose.srose_family != AF_ROSE) 1094 return -EINVAL; 1095 } else { 1096 if (sk->sk_state != TCP_ESTABLISHED) 1097 return -ENOTCONN; 1098 1099 srose.srose_family = AF_ROSE; 1100 srose.srose_addr = rose->dest_addr; 1101 srose.srose_call = rose->dest_call; 1102 srose.srose_ndigis = rose->dest_ndigis; 1103 for (n = 0 ; n < rose->dest_ndigis ; n++) 1104 srose.srose_digis[n] = rose->dest_digis[n]; 1105 } 1106 1107 /* Build a packet */ 1108 /* Sanity check the packet size */ 1109 if (len > 65535) 1110 return -EMSGSIZE; 1111 1112 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; 1113 1114 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) 1115 return err; 1116 1117 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); 1118 1119 /* 1120 * Put the data on the end 1121 */ 1122 1123 skb_reset_transport_header(skb); 1124 skb_put(skb, len); 1125 1126 err = memcpy_from_msg(skb_transport_header(skb), msg, len); 1127 if (err) { 1128 kfree_skb(skb); 1129 return err; 1130 } 1131 1132 /* 1133 * If the Q BIT Include socket option is in force, the first 1134 * byte of the user data is the logical value of the Q Bit. 1135 */ 1136 if (rose->qbitincl) { 1137 qbit = skb->data[0]; 1138 skb_pull(skb, 1); 1139 } 1140 1141 /* 1142 * Push down the ROSE header 1143 */ 1144 asmptr = skb_push(skb, ROSE_MIN_LEN); 1145 1146 /* Build a ROSE Network header */ 1147 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; 1148 asmptr[1] = (rose->lci >> 0) & 0xFF; 1149 asmptr[2] = ROSE_DATA; 1150 1151 if (qbit) 1152 asmptr[0] |= ROSE_Q_BIT; 1153 1154 if (sk->sk_state != TCP_ESTABLISHED) { 1155 kfree_skb(skb); 1156 return -ENOTCONN; 1157 } 1158 1159 #ifdef M_BIT 1160 #define ROSE_PACLEN (256-ROSE_MIN_LEN) 1161 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { 1162 unsigned char header[ROSE_MIN_LEN]; 1163 struct sk_buff *skbn; 1164 int frontlen; 1165 int lg; 1166 1167 /* Save a copy of the Header */ 1168 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); 1169 skb_pull(skb, ROSE_MIN_LEN); 1170 1171 frontlen = skb_headroom(skb); 1172 1173 while (skb->len > 0) { 1174 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { 1175 kfree_skb(skb); 1176 return err; 1177 } 1178 1179 skbn->sk = sk; 1180 skbn->free = 1; 1181 skbn->arp = 1; 1182 1183 skb_reserve(skbn, frontlen); 1184 1185 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; 1186 1187 /* Copy the user data */ 1188 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); 1189 skb_pull(skb, lg); 1190 1191 /* Duplicate the Header */ 1192 skb_push(skbn, ROSE_MIN_LEN); 1193 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); 1194 1195 if (skb->len > 0) 1196 skbn->data[2] |= M_BIT; 1197 1198 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ 1199 } 1200 1201 skb->free = 1; 1202 kfree_skb(skb); 1203 } else { 1204 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ 1205 } 1206 #else 1207 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ 1208 #endif 1209 1210 rose_kick(sk); 1211 1212 return len; 1213 } 1214 1215 1216 static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, 1217 int flags) 1218 { 1219 struct sock *sk = sock->sk; 1220 struct rose_sock *rose = rose_sk(sk); 1221 size_t copied; 1222 unsigned char *asmptr; 1223 struct sk_buff *skb; 1224 int n, er, qbit; 1225 1226 /* 1227 * This works for seqpacket too. The receiver has ordered the queue for 1228 * us! We do one quick check first though 1229 */ 1230 if (sk->sk_state != TCP_ESTABLISHED) 1231 return -ENOTCONN; 1232 1233 /* Now we can treat all alike */ 1234 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) 1235 return er; 1236 1237 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; 1238 1239 skb_pull(skb, ROSE_MIN_LEN); 1240 1241 if (rose->qbitincl) { 1242 asmptr = skb_push(skb, 1); 1243 *asmptr = qbit; 1244 } 1245 1246 skb_reset_transport_header(skb); 1247 copied = skb->len; 1248 1249 if (copied > size) { 1250 copied = size; 1251 msg->msg_flags |= MSG_TRUNC; 1252 } 1253 1254 skb_copy_datagram_msg(skb, 0, msg, copied); 1255 1256 if (msg->msg_name) { 1257 struct sockaddr_rose *srose; 1258 DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose, 1259 msg->msg_name); 1260 1261 memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose)); 1262 srose = msg->msg_name; 1263 srose->srose_family = AF_ROSE; 1264 srose->srose_addr = rose->dest_addr; 1265 srose->srose_call = rose->dest_call; 1266 srose->srose_ndigis = rose->dest_ndigis; 1267 for (n = 0 ; n < rose->dest_ndigis ; n++) 1268 full_srose->srose_digis[n] = rose->dest_digis[n]; 1269 msg->msg_namelen = sizeof(struct full_sockaddr_rose); 1270 } 1271 1272 skb_free_datagram(sk, skb); 1273 1274 return copied; 1275 } 1276 1277 1278 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 1279 { 1280 struct sock *sk = sock->sk; 1281 struct rose_sock *rose = rose_sk(sk); 1282 void __user *argp = (void __user *)arg; 1283 1284 switch (cmd) { 1285 case TIOCOUTQ: { 1286 long amount; 1287 1288 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); 1289 if (amount < 0) 1290 amount = 0; 1291 return put_user(amount, (unsigned int __user *) argp); 1292 } 1293 1294 case TIOCINQ: { 1295 struct sk_buff *skb; 1296 long amount = 0L; 1297 /* These two are safe on a single CPU system as only user tasks fiddle here */ 1298 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) 1299 amount = skb->len; 1300 return put_user(amount, (unsigned int __user *) argp); 1301 } 1302 1303 case SIOCGSTAMP: 1304 return sock_get_timestamp(sk, (struct timeval __user *) argp); 1305 1306 case SIOCGSTAMPNS: 1307 return sock_get_timestampns(sk, (struct timespec __user *) argp); 1308 1309 case SIOCGIFADDR: 1310 case SIOCSIFADDR: 1311 case SIOCGIFDSTADDR: 1312 case SIOCSIFDSTADDR: 1313 case SIOCGIFBRDADDR: 1314 case SIOCSIFBRDADDR: 1315 case SIOCGIFNETMASK: 1316 case SIOCSIFNETMASK: 1317 case SIOCGIFMETRIC: 1318 case SIOCSIFMETRIC: 1319 return -EINVAL; 1320 1321 case SIOCADDRT: 1322 case SIOCDELRT: 1323 case SIOCRSCLRRT: 1324 if (!capable(CAP_NET_ADMIN)) 1325 return -EPERM; 1326 return rose_rt_ioctl(cmd, argp); 1327 1328 case SIOCRSGCAUSE: { 1329 struct rose_cause_struct rose_cause; 1330 rose_cause.cause = rose->cause; 1331 rose_cause.diagnostic = rose->diagnostic; 1332 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; 1333 } 1334 1335 case SIOCRSSCAUSE: { 1336 struct rose_cause_struct rose_cause; 1337 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) 1338 return -EFAULT; 1339 rose->cause = rose_cause.cause; 1340 rose->diagnostic = rose_cause.diagnostic; 1341 return 0; 1342 } 1343 1344 case SIOCRSSL2CALL: 1345 if (!capable(CAP_NET_ADMIN)) return -EPERM; 1346 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1347 ax25_listen_release(&rose_callsign, NULL); 1348 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) 1349 return -EFAULT; 1350 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1351 return ax25_listen_register(&rose_callsign, NULL); 1352 1353 return 0; 1354 1355 case SIOCRSGL2CALL: 1356 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; 1357 1358 case SIOCRSACCEPT: 1359 if (rose->state == ROSE_STATE_5) { 1360 rose_write_internal(sk, ROSE_CALL_ACCEPTED); 1361 rose_start_idletimer(sk); 1362 rose->condition = 0x00; 1363 rose->vs = 0; 1364 rose->va = 0; 1365 rose->vr = 0; 1366 rose->vl = 0; 1367 rose->state = ROSE_STATE_3; 1368 } 1369 return 0; 1370 1371 default: 1372 return -ENOIOCTLCMD; 1373 } 1374 1375 return 0; 1376 } 1377 1378 #ifdef CONFIG_PROC_FS 1379 static void *rose_info_start(struct seq_file *seq, loff_t *pos) 1380 __acquires(rose_list_lock) 1381 { 1382 spin_lock_bh(&rose_list_lock); 1383 return seq_hlist_start_head(&rose_list, *pos); 1384 } 1385 1386 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) 1387 { 1388 return seq_hlist_next(v, &rose_list, pos); 1389 } 1390 1391 static void rose_info_stop(struct seq_file *seq, void *v) 1392 __releases(rose_list_lock) 1393 { 1394 spin_unlock_bh(&rose_list_lock); 1395 } 1396 1397 static int rose_info_show(struct seq_file *seq, void *v) 1398 { 1399 char buf[11], rsbuf[11]; 1400 1401 if (v == SEQ_START_TOKEN) 1402 seq_puts(seq, 1403 "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"); 1404 1405 else { 1406 struct sock *s = sk_entry(v); 1407 struct rose_sock *rose = rose_sk(s); 1408 const char *devname, *callsign; 1409 const struct net_device *dev = rose->device; 1410 1411 if (!dev) 1412 devname = "???"; 1413 else 1414 devname = dev->name; 1415 1416 seq_printf(seq, "%-10s %-9s ", 1417 rose2asc(rsbuf, &rose->dest_addr), 1418 ax2asc(buf, &rose->dest_call)); 1419 1420 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) 1421 callsign = "??????-?"; 1422 else 1423 callsign = ax2asc(buf, &rose->source_call); 1424 1425 seq_printf(seq, 1426 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", 1427 rose2asc(rsbuf, &rose->source_addr), 1428 callsign, 1429 devname, 1430 rose->lci & 0x0FFF, 1431 (rose->neighbour) ? rose->neighbour->number : 0, 1432 rose->state, 1433 rose->vs, 1434 rose->vr, 1435 rose->va, 1436 ax25_display_timer(&rose->timer) / HZ, 1437 rose->t1 / HZ, 1438 rose->t2 / HZ, 1439 rose->t3 / HZ, 1440 rose->hb / HZ, 1441 ax25_display_timer(&rose->idletimer) / (60 * HZ), 1442 rose->idle / (60 * HZ), 1443 sk_wmem_alloc_get(s), 1444 sk_rmem_alloc_get(s), 1445 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); 1446 } 1447 1448 return 0; 1449 } 1450 1451 static const struct seq_operations rose_info_seqops = { 1452 .start = rose_info_start, 1453 .next = rose_info_next, 1454 .stop = rose_info_stop, 1455 .show = rose_info_show, 1456 }; 1457 1458 static int rose_info_open(struct inode *inode, struct file *file) 1459 { 1460 return seq_open(file, &rose_info_seqops); 1461 } 1462 1463 static const struct file_operations rose_info_fops = { 1464 .open = rose_info_open, 1465 .read = seq_read, 1466 .llseek = seq_lseek, 1467 .release = seq_release, 1468 }; 1469 #endif /* CONFIG_PROC_FS */ 1470 1471 static const struct net_proto_family rose_family_ops = { 1472 .family = PF_ROSE, 1473 .create = rose_create, 1474 .owner = THIS_MODULE, 1475 }; 1476 1477 static const struct proto_ops rose_proto_ops = { 1478 .family = PF_ROSE, 1479 .owner = THIS_MODULE, 1480 .release = rose_release, 1481 .bind = rose_bind, 1482 .connect = rose_connect, 1483 .socketpair = sock_no_socketpair, 1484 .accept = rose_accept, 1485 .getname = rose_getname, 1486 .poll = datagram_poll, 1487 .ioctl = rose_ioctl, 1488 .listen = rose_listen, 1489 .shutdown = sock_no_shutdown, 1490 .setsockopt = rose_setsockopt, 1491 .getsockopt = rose_getsockopt, 1492 .sendmsg = rose_sendmsg, 1493 .recvmsg = rose_recvmsg, 1494 .mmap = sock_no_mmap, 1495 .sendpage = sock_no_sendpage, 1496 }; 1497 1498 static struct notifier_block rose_dev_notifier = { 1499 .notifier_call = rose_device_event, 1500 }; 1501 1502 static struct net_device **dev_rose; 1503 1504 static struct ax25_protocol rose_pid = { 1505 .pid = AX25_P_ROSE, 1506 .func = rose_route_frame 1507 }; 1508 1509 static struct ax25_linkfail rose_linkfail_notifier = { 1510 .func = rose_link_failed 1511 }; 1512 1513 static int __init rose_proto_init(void) 1514 { 1515 int i; 1516 int rc; 1517 1518 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { 1519 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n"); 1520 rc = -EINVAL; 1521 goto out; 1522 } 1523 1524 rc = proto_register(&rose_proto, 0); 1525 if (rc != 0) 1526 goto out; 1527 1528 rose_callsign = null_ax25_address; 1529 1530 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL); 1531 if (dev_rose == NULL) { 1532 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); 1533 rc = -ENOMEM; 1534 goto out_proto_unregister; 1535 } 1536 1537 for (i = 0; i < rose_ndevs; i++) { 1538 struct net_device *dev; 1539 char name[IFNAMSIZ]; 1540 1541 sprintf(name, "rose%d", i); 1542 dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup); 1543 if (!dev) { 1544 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); 1545 rc = -ENOMEM; 1546 goto fail; 1547 } 1548 rc = register_netdev(dev); 1549 if (rc) { 1550 printk(KERN_ERR "ROSE: netdevice registration failed\n"); 1551 free_netdev(dev); 1552 goto fail; 1553 } 1554 rose_set_lockdep_key(dev); 1555 dev_rose[i] = dev; 1556 } 1557 1558 sock_register(&rose_family_ops); 1559 register_netdevice_notifier(&rose_dev_notifier); 1560 1561 ax25_register_pid(&rose_pid); 1562 ax25_linkfail_register(&rose_linkfail_notifier); 1563 1564 #ifdef CONFIG_SYSCTL 1565 rose_register_sysctl(); 1566 #endif 1567 rose_loopback_init(); 1568 1569 rose_add_loopback_neigh(); 1570 1571 proc_create("rose", S_IRUGO, init_net.proc_net, &rose_info_fops); 1572 proc_create("rose_neigh", S_IRUGO, init_net.proc_net, 1573 &rose_neigh_fops); 1574 proc_create("rose_nodes", S_IRUGO, init_net.proc_net, 1575 &rose_nodes_fops); 1576 proc_create("rose_routes", S_IRUGO, init_net.proc_net, 1577 &rose_routes_fops); 1578 out: 1579 return rc; 1580 fail: 1581 while (--i >= 0) { 1582 unregister_netdev(dev_rose[i]); 1583 free_netdev(dev_rose[i]); 1584 } 1585 kfree(dev_rose); 1586 out_proto_unregister: 1587 proto_unregister(&rose_proto); 1588 goto out; 1589 } 1590 module_init(rose_proto_init); 1591 1592 module_param(rose_ndevs, int, 0); 1593 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); 1594 1595 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); 1596 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); 1597 MODULE_LICENSE("GPL"); 1598 MODULE_ALIAS_NETPROTO(PF_ROSE); 1599 1600 static void __exit rose_exit(void) 1601 { 1602 int i; 1603 1604 remove_proc_entry("rose", init_net.proc_net); 1605 remove_proc_entry("rose_neigh", init_net.proc_net); 1606 remove_proc_entry("rose_nodes", init_net.proc_net); 1607 remove_proc_entry("rose_routes", init_net.proc_net); 1608 rose_loopback_clear(); 1609 1610 rose_rt_free(); 1611 1612 ax25_protocol_release(AX25_P_ROSE); 1613 ax25_linkfail_release(&rose_linkfail_notifier); 1614 1615 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1616 ax25_listen_release(&rose_callsign, NULL); 1617 1618 #ifdef CONFIG_SYSCTL 1619 rose_unregister_sysctl(); 1620 #endif 1621 unregister_netdevice_notifier(&rose_dev_notifier); 1622 1623 sock_unregister(PF_ROSE); 1624 1625 for (i = 0; i < rose_ndevs; i++) { 1626 struct net_device *dev = dev_rose[i]; 1627 1628 if (dev) { 1629 unregister_netdev(dev); 1630 free_netdev(dev); 1631 } 1632 } 1633 1634 kfree(dev_rose); 1635 proto_unregister(&rose_proto); 1636 } 1637 1638 module_exit(rose_exit); 1639