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 dev_put(dev); 694 return -EACCES; 695 } 696 rose->source_call = *source; 697 } 698 699 rose->source_addr = addr->srose_addr; 700 rose->device = dev; 701 rose->source_ndigis = addr->srose_ndigis; 702 703 if (addr_len == sizeof(struct full_sockaddr_rose)) { 704 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 705 for (n = 0 ; n < addr->srose_ndigis ; n++) 706 rose->source_digis[n] = full_addr->srose_digis[n]; 707 } else { 708 if (rose->source_ndigis == 1) { 709 rose->source_digis[0] = addr->srose_digi; 710 } 711 } 712 713 rose_insert_socket(sk); 714 715 sock_reset_flag(sk, SOCK_ZAPPED); 716 717 return 0; 718 } 719 720 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) 721 { 722 struct sock *sk = sock->sk; 723 struct rose_sock *rose = rose_sk(sk); 724 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 725 unsigned char cause, diagnostic; 726 struct net_device *dev; 727 ax25_uid_assoc *user; 728 int n, err = 0; 729 730 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 731 return -EINVAL; 732 733 if (addr->srose_family != AF_ROSE) 734 return -EINVAL; 735 736 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 737 return -EINVAL; 738 739 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 740 return -EINVAL; 741 742 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ 743 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) 744 return -EINVAL; 745 746 lock_sock(sk); 747 748 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { 749 /* Connect completed during a ERESTARTSYS event */ 750 sock->state = SS_CONNECTED; 751 goto out_release; 752 } 753 754 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { 755 sock->state = SS_UNCONNECTED; 756 err = -ECONNREFUSED; 757 goto out_release; 758 } 759 760 if (sk->sk_state == TCP_ESTABLISHED) { 761 /* No reconnect on a seqpacket socket */ 762 err = -EISCONN; 763 goto out_release; 764 } 765 766 sk->sk_state = TCP_CLOSE; 767 sock->state = SS_UNCONNECTED; 768 769 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, 770 &diagnostic, 0); 771 if (!rose->neighbour) { 772 err = -ENETUNREACH; 773 goto out_release; 774 } 775 776 rose->lci = rose_new_lci(rose->neighbour); 777 if (!rose->lci) { 778 err = -ENETUNREACH; 779 goto out_release; 780 } 781 782 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ 783 sock_reset_flag(sk, SOCK_ZAPPED); 784 785 if ((dev = rose_dev_first()) == NULL) { 786 err = -ENETUNREACH; 787 goto out_release; 788 } 789 790 user = ax25_findbyuid(current_euid()); 791 if (!user) { 792 err = -EINVAL; 793 goto out_release; 794 } 795 796 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); 797 rose->source_call = user->call; 798 rose->device = dev; 799 ax25_uid_put(user); 800 801 rose_insert_socket(sk); /* Finish the bind */ 802 } 803 rose->dest_addr = addr->srose_addr; 804 rose->dest_call = addr->srose_call; 805 rose->rand = ((long)rose & 0xFFFF) + rose->lci; 806 rose->dest_ndigis = addr->srose_ndigis; 807 808 if (addr_len == sizeof(struct full_sockaddr_rose)) { 809 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 810 for (n = 0 ; n < addr->srose_ndigis ; n++) 811 rose->dest_digis[n] = full_addr->srose_digis[n]; 812 } else { 813 if (rose->dest_ndigis == 1) { 814 rose->dest_digis[0] = addr->srose_digi; 815 } 816 } 817 818 /* Move to connecting socket, start sending Connect Requests */ 819 sock->state = SS_CONNECTING; 820 sk->sk_state = TCP_SYN_SENT; 821 822 rose->state = ROSE_STATE_1; 823 824 rose->neighbour->use++; 825 826 rose_write_internal(sk, ROSE_CALL_REQUEST); 827 rose_start_heartbeat(sk); 828 rose_start_t1timer(sk); 829 830 /* Now the loop */ 831 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) { 832 err = -EINPROGRESS; 833 goto out_release; 834 } 835 836 /* 837 * A Connect Ack with Choke or timeout or failed routing will go to 838 * closed. 839 */ 840 if (sk->sk_state == TCP_SYN_SENT) { 841 DEFINE_WAIT(wait); 842 843 for (;;) { 844 prepare_to_wait(sk_sleep(sk), &wait, 845 TASK_INTERRUPTIBLE); 846 if (sk->sk_state != TCP_SYN_SENT) 847 break; 848 if (!signal_pending(current)) { 849 release_sock(sk); 850 schedule(); 851 lock_sock(sk); 852 continue; 853 } 854 err = -ERESTARTSYS; 855 break; 856 } 857 finish_wait(sk_sleep(sk), &wait); 858 859 if (err) 860 goto out_release; 861 } 862 863 if (sk->sk_state != TCP_ESTABLISHED) { 864 sock->state = SS_UNCONNECTED; 865 err = sock_error(sk); /* Always set at this point */ 866 goto out_release; 867 } 868 869 sock->state = SS_CONNECTED; 870 871 out_release: 872 release_sock(sk); 873 874 return err; 875 } 876 877 static int rose_accept(struct socket *sock, struct socket *newsock, int flags, 878 bool kern) 879 { 880 struct sk_buff *skb; 881 struct sock *newsk; 882 DEFINE_WAIT(wait); 883 struct sock *sk; 884 int err = 0; 885 886 if ((sk = sock->sk) == NULL) 887 return -EINVAL; 888 889 lock_sock(sk); 890 if (sk->sk_type != SOCK_SEQPACKET) { 891 err = -EOPNOTSUPP; 892 goto out_release; 893 } 894 895 if (sk->sk_state != TCP_LISTEN) { 896 err = -EINVAL; 897 goto out_release; 898 } 899 900 /* 901 * The write queue this time is holding sockets ready to use 902 * hooked into the SABM we saved 903 */ 904 for (;;) { 905 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); 906 907 skb = skb_dequeue(&sk->sk_receive_queue); 908 if (skb) 909 break; 910 911 if (flags & O_NONBLOCK) { 912 err = -EWOULDBLOCK; 913 break; 914 } 915 if (!signal_pending(current)) { 916 release_sock(sk); 917 schedule(); 918 lock_sock(sk); 919 continue; 920 } 921 err = -ERESTARTSYS; 922 break; 923 } 924 finish_wait(sk_sleep(sk), &wait); 925 if (err) 926 goto out_release; 927 928 newsk = skb->sk; 929 sock_graft(newsk, newsock); 930 931 /* Now attach up the new socket */ 932 skb->sk = NULL; 933 kfree_skb(skb); 934 sk->sk_ack_backlog--; 935 936 out_release: 937 release_sock(sk); 938 939 return err; 940 } 941 942 static int rose_getname(struct socket *sock, struct sockaddr *uaddr, 943 int peer) 944 { 945 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; 946 struct sock *sk = sock->sk; 947 struct rose_sock *rose = rose_sk(sk); 948 int n; 949 950 memset(srose, 0, sizeof(*srose)); 951 if (peer != 0) { 952 if (sk->sk_state != TCP_ESTABLISHED) 953 return -ENOTCONN; 954 srose->srose_family = AF_ROSE; 955 srose->srose_addr = rose->dest_addr; 956 srose->srose_call = rose->dest_call; 957 srose->srose_ndigis = rose->dest_ndigis; 958 for (n = 0; n < rose->dest_ndigis; n++) 959 srose->srose_digis[n] = rose->dest_digis[n]; 960 } else { 961 srose->srose_family = AF_ROSE; 962 srose->srose_addr = rose->source_addr; 963 srose->srose_call = rose->source_call; 964 srose->srose_ndigis = rose->source_ndigis; 965 for (n = 0; n < rose->source_ndigis; n++) 966 srose->srose_digis[n] = rose->source_digis[n]; 967 } 968 969 return sizeof(struct full_sockaddr_rose); 970 } 971 972 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) 973 { 974 struct sock *sk; 975 struct sock *make; 976 struct rose_sock *make_rose; 977 struct rose_facilities_struct facilities; 978 int n; 979 980 skb->sk = NULL; /* Initially we don't know who it's for */ 981 982 /* 983 * skb->data points to the rose frame start 984 */ 985 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); 986 987 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF, 988 skb->len - ROSE_CALL_REQ_FACILITIES_OFF, 989 &facilities)) { 990 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); 991 return 0; 992 } 993 994 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); 995 996 /* 997 * We can't accept the Call Request. 998 */ 999 if (sk == NULL || sk_acceptq_is_full(sk) || 1000 (make = rose_make_new(sk)) == NULL) { 1001 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); 1002 return 0; 1003 } 1004 1005 skb->sk = make; 1006 make->sk_state = TCP_ESTABLISHED; 1007 make_rose = rose_sk(make); 1008 1009 make_rose->lci = lci; 1010 make_rose->dest_addr = facilities.dest_addr; 1011 make_rose->dest_call = facilities.dest_call; 1012 make_rose->dest_ndigis = facilities.dest_ndigis; 1013 for (n = 0 ; n < facilities.dest_ndigis ; n++) 1014 make_rose->dest_digis[n] = facilities.dest_digis[n]; 1015 make_rose->source_addr = facilities.source_addr; 1016 make_rose->source_call = facilities.source_call; 1017 make_rose->source_ndigis = facilities.source_ndigis; 1018 for (n = 0 ; n < facilities.source_ndigis ; n++) 1019 make_rose->source_digis[n] = facilities.source_digis[n]; 1020 make_rose->neighbour = neigh; 1021 make_rose->device = dev; 1022 make_rose->facilities = facilities; 1023 1024 make_rose->neighbour->use++; 1025 1026 if (rose_sk(sk)->defer) { 1027 make_rose->state = ROSE_STATE_5; 1028 } else { 1029 rose_write_internal(make, ROSE_CALL_ACCEPTED); 1030 make_rose->state = ROSE_STATE_3; 1031 rose_start_idletimer(make); 1032 } 1033 1034 make_rose->condition = 0x00; 1035 make_rose->vs = 0; 1036 make_rose->va = 0; 1037 make_rose->vr = 0; 1038 make_rose->vl = 0; 1039 sk->sk_ack_backlog++; 1040 1041 rose_insert_socket(make); 1042 1043 skb_queue_head(&sk->sk_receive_queue, skb); 1044 1045 rose_start_heartbeat(make); 1046 1047 if (!sock_flag(sk, SOCK_DEAD)) 1048 sk->sk_data_ready(sk); 1049 1050 return 1; 1051 } 1052 1053 static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) 1054 { 1055 struct sock *sk = sock->sk; 1056 struct rose_sock *rose = rose_sk(sk); 1057 DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name); 1058 int err; 1059 struct full_sockaddr_rose srose; 1060 struct sk_buff *skb; 1061 unsigned char *asmptr; 1062 int n, size, qbit = 0; 1063 1064 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) 1065 return -EINVAL; 1066 1067 if (sock_flag(sk, SOCK_ZAPPED)) 1068 return -EADDRNOTAVAIL; 1069 1070 if (sk->sk_shutdown & SEND_SHUTDOWN) { 1071 send_sig(SIGPIPE, current, 0); 1072 return -EPIPE; 1073 } 1074 1075 if (rose->neighbour == NULL || rose->device == NULL) 1076 return -ENETUNREACH; 1077 1078 if (usrose != NULL) { 1079 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) 1080 return -EINVAL; 1081 memset(&srose, 0, sizeof(struct full_sockaddr_rose)); 1082 memcpy(&srose, usrose, msg->msg_namelen); 1083 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || 1084 ax25cmp(&rose->dest_call, &srose.srose_call) != 0) 1085 return -EISCONN; 1086 if (srose.srose_ndigis != rose->dest_ndigis) 1087 return -EISCONN; 1088 if (srose.srose_ndigis == rose->dest_ndigis) { 1089 for (n = 0 ; n < srose.srose_ndigis ; n++) 1090 if (ax25cmp(&rose->dest_digis[n], 1091 &srose.srose_digis[n])) 1092 return -EISCONN; 1093 } 1094 if (srose.srose_family != AF_ROSE) 1095 return -EINVAL; 1096 } else { 1097 if (sk->sk_state != TCP_ESTABLISHED) 1098 return -ENOTCONN; 1099 1100 srose.srose_family = AF_ROSE; 1101 srose.srose_addr = rose->dest_addr; 1102 srose.srose_call = rose->dest_call; 1103 srose.srose_ndigis = rose->dest_ndigis; 1104 for (n = 0 ; n < rose->dest_ndigis ; n++) 1105 srose.srose_digis[n] = rose->dest_digis[n]; 1106 } 1107 1108 /* Build a packet */ 1109 /* Sanity check the packet size */ 1110 if (len > 65535) 1111 return -EMSGSIZE; 1112 1113 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; 1114 1115 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) 1116 return err; 1117 1118 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); 1119 1120 /* 1121 * Put the data on the end 1122 */ 1123 1124 skb_reset_transport_header(skb); 1125 skb_put(skb, len); 1126 1127 err = memcpy_from_msg(skb_transport_header(skb), msg, len); 1128 if (err) { 1129 kfree_skb(skb); 1130 return err; 1131 } 1132 1133 /* 1134 * If the Q BIT Include socket option is in force, the first 1135 * byte of the user data is the logical value of the Q Bit. 1136 */ 1137 if (rose->qbitincl) { 1138 qbit = skb->data[0]; 1139 skb_pull(skb, 1); 1140 } 1141 1142 /* 1143 * Push down the ROSE header 1144 */ 1145 asmptr = skb_push(skb, ROSE_MIN_LEN); 1146 1147 /* Build a ROSE Network header */ 1148 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; 1149 asmptr[1] = (rose->lci >> 0) & 0xFF; 1150 asmptr[2] = ROSE_DATA; 1151 1152 if (qbit) 1153 asmptr[0] |= ROSE_Q_BIT; 1154 1155 if (sk->sk_state != TCP_ESTABLISHED) { 1156 kfree_skb(skb); 1157 return -ENOTCONN; 1158 } 1159 1160 #ifdef M_BIT 1161 #define ROSE_PACLEN (256-ROSE_MIN_LEN) 1162 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { 1163 unsigned char header[ROSE_MIN_LEN]; 1164 struct sk_buff *skbn; 1165 int frontlen; 1166 int lg; 1167 1168 /* Save a copy of the Header */ 1169 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); 1170 skb_pull(skb, ROSE_MIN_LEN); 1171 1172 frontlen = skb_headroom(skb); 1173 1174 while (skb->len > 0) { 1175 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { 1176 kfree_skb(skb); 1177 return err; 1178 } 1179 1180 skbn->sk = sk; 1181 skbn->free = 1; 1182 skbn->arp = 1; 1183 1184 skb_reserve(skbn, frontlen); 1185 1186 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; 1187 1188 /* Copy the user data */ 1189 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); 1190 skb_pull(skb, lg); 1191 1192 /* Duplicate the Header */ 1193 skb_push(skbn, ROSE_MIN_LEN); 1194 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); 1195 1196 if (skb->len > 0) 1197 skbn->data[2] |= M_BIT; 1198 1199 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ 1200 } 1201 1202 skb->free = 1; 1203 kfree_skb(skb); 1204 } else { 1205 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ 1206 } 1207 #else 1208 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ 1209 #endif 1210 1211 rose_kick(sk); 1212 1213 return len; 1214 } 1215 1216 1217 static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, 1218 int flags) 1219 { 1220 struct sock *sk = sock->sk; 1221 struct rose_sock *rose = rose_sk(sk); 1222 size_t copied; 1223 unsigned char *asmptr; 1224 struct sk_buff *skb; 1225 int n, er, qbit; 1226 1227 /* 1228 * This works for seqpacket too. The receiver has ordered the queue for 1229 * us! We do one quick check first though 1230 */ 1231 if (sk->sk_state != TCP_ESTABLISHED) 1232 return -ENOTCONN; 1233 1234 /* Now we can treat all alike */ 1235 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) 1236 return er; 1237 1238 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; 1239 1240 skb_pull(skb, ROSE_MIN_LEN); 1241 1242 if (rose->qbitincl) { 1243 asmptr = skb_push(skb, 1); 1244 *asmptr = qbit; 1245 } 1246 1247 skb_reset_transport_header(skb); 1248 copied = skb->len; 1249 1250 if (copied > size) { 1251 copied = size; 1252 msg->msg_flags |= MSG_TRUNC; 1253 } 1254 1255 skb_copy_datagram_msg(skb, 0, msg, copied); 1256 1257 if (msg->msg_name) { 1258 struct sockaddr_rose *srose; 1259 DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose, 1260 msg->msg_name); 1261 1262 memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose)); 1263 srose = msg->msg_name; 1264 srose->srose_family = AF_ROSE; 1265 srose->srose_addr = rose->dest_addr; 1266 srose->srose_call = rose->dest_call; 1267 srose->srose_ndigis = rose->dest_ndigis; 1268 for (n = 0 ; n < rose->dest_ndigis ; n++) 1269 full_srose->srose_digis[n] = rose->dest_digis[n]; 1270 msg->msg_namelen = sizeof(struct full_sockaddr_rose); 1271 } 1272 1273 skb_free_datagram(sk, skb); 1274 1275 return copied; 1276 } 1277 1278 1279 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 1280 { 1281 struct sock *sk = sock->sk; 1282 struct rose_sock *rose = rose_sk(sk); 1283 void __user *argp = (void __user *)arg; 1284 1285 switch (cmd) { 1286 case TIOCOUTQ: { 1287 long amount; 1288 1289 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); 1290 if (amount < 0) 1291 amount = 0; 1292 return put_user(amount, (unsigned int __user *) argp); 1293 } 1294 1295 case TIOCINQ: { 1296 struct sk_buff *skb; 1297 long amount = 0L; 1298 /* These two are safe on a single CPU system as only user tasks fiddle here */ 1299 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) 1300 amount = skb->len; 1301 return put_user(amount, (unsigned int __user *) argp); 1302 } 1303 1304 case SIOCGSTAMP: 1305 return sock_get_timestamp(sk, (struct timeval __user *) argp); 1306 1307 case SIOCGSTAMPNS: 1308 return sock_get_timestampns(sk, (struct timespec __user *) argp); 1309 1310 case SIOCGIFADDR: 1311 case SIOCSIFADDR: 1312 case SIOCGIFDSTADDR: 1313 case SIOCSIFDSTADDR: 1314 case SIOCGIFBRDADDR: 1315 case SIOCSIFBRDADDR: 1316 case SIOCGIFNETMASK: 1317 case SIOCSIFNETMASK: 1318 case SIOCGIFMETRIC: 1319 case SIOCSIFMETRIC: 1320 return -EINVAL; 1321 1322 case SIOCADDRT: 1323 case SIOCDELRT: 1324 case SIOCRSCLRRT: 1325 if (!capable(CAP_NET_ADMIN)) 1326 return -EPERM; 1327 return rose_rt_ioctl(cmd, argp); 1328 1329 case SIOCRSGCAUSE: { 1330 struct rose_cause_struct rose_cause; 1331 rose_cause.cause = rose->cause; 1332 rose_cause.diagnostic = rose->diagnostic; 1333 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; 1334 } 1335 1336 case SIOCRSSCAUSE: { 1337 struct rose_cause_struct rose_cause; 1338 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) 1339 return -EFAULT; 1340 rose->cause = rose_cause.cause; 1341 rose->diagnostic = rose_cause.diagnostic; 1342 return 0; 1343 } 1344 1345 case SIOCRSSL2CALL: 1346 if (!capable(CAP_NET_ADMIN)) return -EPERM; 1347 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1348 ax25_listen_release(&rose_callsign, NULL); 1349 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) 1350 return -EFAULT; 1351 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1352 return ax25_listen_register(&rose_callsign, NULL); 1353 1354 return 0; 1355 1356 case SIOCRSGL2CALL: 1357 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; 1358 1359 case SIOCRSACCEPT: 1360 if (rose->state == ROSE_STATE_5) { 1361 rose_write_internal(sk, ROSE_CALL_ACCEPTED); 1362 rose_start_idletimer(sk); 1363 rose->condition = 0x00; 1364 rose->vs = 0; 1365 rose->va = 0; 1366 rose->vr = 0; 1367 rose->vl = 0; 1368 rose->state = ROSE_STATE_3; 1369 } 1370 return 0; 1371 1372 default: 1373 return -ENOIOCTLCMD; 1374 } 1375 1376 return 0; 1377 } 1378 1379 #ifdef CONFIG_PROC_FS 1380 static void *rose_info_start(struct seq_file *seq, loff_t *pos) 1381 __acquires(rose_list_lock) 1382 { 1383 spin_lock_bh(&rose_list_lock); 1384 return seq_hlist_start_head(&rose_list, *pos); 1385 } 1386 1387 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) 1388 { 1389 return seq_hlist_next(v, &rose_list, pos); 1390 } 1391 1392 static void rose_info_stop(struct seq_file *seq, void *v) 1393 __releases(rose_list_lock) 1394 { 1395 spin_unlock_bh(&rose_list_lock); 1396 } 1397 1398 static int rose_info_show(struct seq_file *seq, void *v) 1399 { 1400 char buf[11], rsbuf[11]; 1401 1402 if (v == SEQ_START_TOKEN) 1403 seq_puts(seq, 1404 "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"); 1405 1406 else { 1407 struct sock *s = sk_entry(v); 1408 struct rose_sock *rose = rose_sk(s); 1409 const char *devname, *callsign; 1410 const struct net_device *dev = rose->device; 1411 1412 if (!dev) 1413 devname = "???"; 1414 else 1415 devname = dev->name; 1416 1417 seq_printf(seq, "%-10s %-9s ", 1418 rose2asc(rsbuf, &rose->dest_addr), 1419 ax2asc(buf, &rose->dest_call)); 1420 1421 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) 1422 callsign = "??????-?"; 1423 else 1424 callsign = ax2asc(buf, &rose->source_call); 1425 1426 seq_printf(seq, 1427 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", 1428 rose2asc(rsbuf, &rose->source_addr), 1429 callsign, 1430 devname, 1431 rose->lci & 0x0FFF, 1432 (rose->neighbour) ? rose->neighbour->number : 0, 1433 rose->state, 1434 rose->vs, 1435 rose->vr, 1436 rose->va, 1437 ax25_display_timer(&rose->timer) / HZ, 1438 rose->t1 / HZ, 1439 rose->t2 / HZ, 1440 rose->t3 / HZ, 1441 rose->hb / HZ, 1442 ax25_display_timer(&rose->idletimer) / (60 * HZ), 1443 rose->idle / (60 * HZ), 1444 sk_wmem_alloc_get(s), 1445 sk_rmem_alloc_get(s), 1446 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); 1447 } 1448 1449 return 0; 1450 } 1451 1452 static const struct seq_operations rose_info_seqops = { 1453 .start = rose_info_start, 1454 .next = rose_info_next, 1455 .stop = rose_info_stop, 1456 .show = rose_info_show, 1457 }; 1458 #endif /* CONFIG_PROC_FS */ 1459 1460 static const struct net_proto_family rose_family_ops = { 1461 .family = PF_ROSE, 1462 .create = rose_create, 1463 .owner = THIS_MODULE, 1464 }; 1465 1466 static const struct proto_ops rose_proto_ops = { 1467 .family = PF_ROSE, 1468 .owner = THIS_MODULE, 1469 .release = rose_release, 1470 .bind = rose_bind, 1471 .connect = rose_connect, 1472 .socketpair = sock_no_socketpair, 1473 .accept = rose_accept, 1474 .getname = rose_getname, 1475 .poll = datagram_poll, 1476 .ioctl = rose_ioctl, 1477 .listen = rose_listen, 1478 .shutdown = sock_no_shutdown, 1479 .setsockopt = rose_setsockopt, 1480 .getsockopt = rose_getsockopt, 1481 .sendmsg = rose_sendmsg, 1482 .recvmsg = rose_recvmsg, 1483 .mmap = sock_no_mmap, 1484 .sendpage = sock_no_sendpage, 1485 }; 1486 1487 static struct notifier_block rose_dev_notifier = { 1488 .notifier_call = rose_device_event, 1489 }; 1490 1491 static struct net_device **dev_rose; 1492 1493 static struct ax25_protocol rose_pid = { 1494 .pid = AX25_P_ROSE, 1495 .func = rose_route_frame 1496 }; 1497 1498 static struct ax25_linkfail rose_linkfail_notifier = { 1499 .func = rose_link_failed 1500 }; 1501 1502 static int __init rose_proto_init(void) 1503 { 1504 int i; 1505 int rc; 1506 1507 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { 1508 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n"); 1509 rc = -EINVAL; 1510 goto out; 1511 } 1512 1513 rc = proto_register(&rose_proto, 0); 1514 if (rc != 0) 1515 goto out; 1516 1517 rose_callsign = null_ax25_address; 1518 1519 dev_rose = kcalloc(rose_ndevs, sizeof(struct net_device *), 1520 GFP_KERNEL); 1521 if (dev_rose == NULL) { 1522 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); 1523 rc = -ENOMEM; 1524 goto out_proto_unregister; 1525 } 1526 1527 for (i = 0; i < rose_ndevs; i++) { 1528 struct net_device *dev; 1529 char name[IFNAMSIZ]; 1530 1531 sprintf(name, "rose%d", i); 1532 dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup); 1533 if (!dev) { 1534 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); 1535 rc = -ENOMEM; 1536 goto fail; 1537 } 1538 rc = register_netdev(dev); 1539 if (rc) { 1540 printk(KERN_ERR "ROSE: netdevice registration failed\n"); 1541 free_netdev(dev); 1542 goto fail; 1543 } 1544 rose_set_lockdep_key(dev); 1545 dev_rose[i] = dev; 1546 } 1547 1548 sock_register(&rose_family_ops); 1549 register_netdevice_notifier(&rose_dev_notifier); 1550 1551 ax25_register_pid(&rose_pid); 1552 ax25_linkfail_register(&rose_linkfail_notifier); 1553 1554 #ifdef CONFIG_SYSCTL 1555 rose_register_sysctl(); 1556 #endif 1557 rose_loopback_init(); 1558 1559 rose_add_loopback_neigh(); 1560 1561 proc_create_seq("rose", 0444, init_net.proc_net, &rose_info_seqops); 1562 proc_create_seq("rose_neigh", 0444, init_net.proc_net, 1563 &rose_neigh_seqops); 1564 proc_create_seq("rose_nodes", 0444, init_net.proc_net, 1565 &rose_node_seqops); 1566 proc_create_seq("rose_routes", 0444, init_net.proc_net, 1567 &rose_route_seqops); 1568 out: 1569 return rc; 1570 fail: 1571 while (--i >= 0) { 1572 unregister_netdev(dev_rose[i]); 1573 free_netdev(dev_rose[i]); 1574 } 1575 kfree(dev_rose); 1576 out_proto_unregister: 1577 proto_unregister(&rose_proto); 1578 goto out; 1579 } 1580 module_init(rose_proto_init); 1581 1582 module_param(rose_ndevs, int, 0); 1583 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); 1584 1585 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); 1586 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); 1587 MODULE_LICENSE("GPL"); 1588 MODULE_ALIAS_NETPROTO(PF_ROSE); 1589 1590 static void __exit rose_exit(void) 1591 { 1592 int i; 1593 1594 remove_proc_entry("rose", init_net.proc_net); 1595 remove_proc_entry("rose_neigh", init_net.proc_net); 1596 remove_proc_entry("rose_nodes", init_net.proc_net); 1597 remove_proc_entry("rose_routes", init_net.proc_net); 1598 rose_loopback_clear(); 1599 1600 rose_rt_free(); 1601 1602 ax25_protocol_release(AX25_P_ROSE); 1603 ax25_linkfail_release(&rose_linkfail_notifier); 1604 1605 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1606 ax25_listen_release(&rose_callsign, NULL); 1607 1608 #ifdef CONFIG_SYSCTL 1609 rose_unregister_sysctl(); 1610 #endif 1611 unregister_netdevice_notifier(&rose_dev_notifier); 1612 1613 sock_unregister(PF_ROSE); 1614 1615 for (i = 0; i < rose_ndevs; i++) { 1616 struct net_device *dev = dev_rose[i]; 1617 1618 if (dev) { 1619 unregister_netdev(dev); 1620 free_netdev(dev); 1621 } 1622 } 1623 1624 kfree(dev_rose); 1625 proto_unregister(&rose_proto); 1626 } 1627 1628 module_exit(rose_exit); 1629