1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) 5 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk) 6 * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net) 7 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi) 8 */ 9 10 #include <linux/capability.h> 11 #include <linux/module.h> 12 #include <linux/moduleparam.h> 13 #include <linux/init.h> 14 #include <linux/errno.h> 15 #include <linux/types.h> 16 #include <linux/socket.h> 17 #include <linux/in.h> 18 #include <linux/slab.h> 19 #include <linux/kernel.h> 20 #include <linux/sched/signal.h> 21 #include <linux/spinlock.h> 22 #include <linux/timer.h> 23 #include <linux/string.h> 24 #include <linux/sockios.h> 25 #include <linux/net.h> 26 #include <linux/stat.h> 27 #include <net/net_namespace.h> 28 #include <net/ax25.h> 29 #include <linux/inet.h> 30 #include <linux/netdevice.h> 31 #include <linux/if_arp.h> 32 #include <linux/skbuff.h> 33 #include <net/sock.h> 34 #include <linux/uaccess.h> 35 #include <linux/fcntl.h> 36 #include <linux/termios.h> 37 #include <linux/mm.h> 38 #include <linux/interrupt.h> 39 #include <linux/notifier.h> 40 #include <net/rose.h> 41 #include <linux/proc_fs.h> 42 #include <linux/seq_file.h> 43 #include <net/tcp_states.h> 44 #include <net/ip.h> 45 #include <net/arp.h> 46 47 static int rose_ndevs = 10; 48 49 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0; 50 int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1; 51 int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2; 52 int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3; 53 int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE; 54 int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB; 55 int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING; 56 int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT; 57 int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC; 58 int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE; 59 60 static HLIST_HEAD(rose_list); 61 static DEFINE_SPINLOCK(rose_list_lock); 62 63 static const struct proto_ops rose_proto_ops; 64 65 ax25_address rose_callsign; 66 67 /* 68 * ROSE network devices are virtual network devices encapsulating ROSE 69 * frames into AX.25 which will be sent through an AX.25 device, so form a 70 * special "super class" of normal net devices; split their locks off into a 71 * separate class since they always nest. 72 */ 73 static struct lock_class_key rose_netdev_xmit_lock_key; 74 static struct lock_class_key rose_netdev_addr_lock_key; 75 76 static void rose_set_lockdep_one(struct net_device *dev, 77 struct netdev_queue *txq, 78 void *_unused) 79 { 80 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); 81 } 82 83 static void rose_set_lockdep_key(struct net_device *dev) 84 { 85 lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key); 86 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL); 87 } 88 89 /* 90 * Convert a ROSE address into text. 91 */ 92 char *rose2asc(char *buf, const rose_address *addr) 93 { 94 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 && 95 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 && 96 addr->rose_addr[4] == 0x00) { 97 strcpy(buf, "*"); 98 } else { 99 sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF, 100 addr->rose_addr[1] & 0xFF, 101 addr->rose_addr[2] & 0xFF, 102 addr->rose_addr[3] & 0xFF, 103 addr->rose_addr[4] & 0xFF); 104 } 105 106 return buf; 107 } 108 109 /* 110 * Compare two ROSE addresses, 0 == equal. 111 */ 112 int rosecmp(const rose_address *addr1, const rose_address *addr2) 113 { 114 int i; 115 116 for (i = 0; i < 5; i++) 117 if (addr1->rose_addr[i] != addr2->rose_addr[i]) 118 return 1; 119 120 return 0; 121 } 122 123 /* 124 * Compare two ROSE addresses for only mask digits, 0 == equal. 125 */ 126 int rosecmpm(const rose_address *addr1, const rose_address *addr2, 127 unsigned short mask) 128 { 129 unsigned int i, j; 130 131 if (mask > 10) 132 return 1; 133 134 for (i = 0; i < mask; i++) { 135 j = i / 2; 136 137 if ((i % 2) != 0) { 138 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) 139 return 1; 140 } else { 141 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) 142 return 1; 143 } 144 } 145 146 return 0; 147 } 148 149 /* 150 * Socket removal during an interrupt is now safe. 151 */ 152 static void rose_remove_socket(struct sock *sk) 153 { 154 spin_lock_bh(&rose_list_lock); 155 sk_del_node_init(sk); 156 spin_unlock_bh(&rose_list_lock); 157 } 158 159 /* 160 * Kill all bound sockets on a broken link layer connection to a 161 * particular neighbour. 162 */ 163 void rose_kill_by_neigh(struct rose_neigh *neigh) 164 { 165 struct sock *s; 166 167 spin_lock_bh(&rose_list_lock); 168 sk_for_each(s, &rose_list) { 169 struct rose_sock *rose = rose_sk(s); 170 171 if (rose->neighbour == neigh) { 172 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 173 rose->neighbour->use--; 174 rose->neighbour = NULL; 175 } 176 } 177 spin_unlock_bh(&rose_list_lock); 178 } 179 180 /* 181 * Kill all bound sockets on a dropped device. 182 */ 183 static void rose_kill_by_device(struct net_device *dev) 184 { 185 struct sock *s; 186 187 spin_lock_bh(&rose_list_lock); 188 sk_for_each(s, &rose_list) { 189 struct rose_sock *rose = rose_sk(s); 190 191 if (rose->device == dev) { 192 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 193 if (rose->neighbour) 194 rose->neighbour->use--; 195 rose->device = NULL; 196 } 197 } 198 spin_unlock_bh(&rose_list_lock); 199 } 200 201 /* 202 * Handle device status changes. 203 */ 204 static int rose_device_event(struct notifier_block *this, 205 unsigned long event, void *ptr) 206 { 207 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 208 209 if (!net_eq(dev_net(dev), &init_net)) 210 return NOTIFY_DONE; 211 212 if (event != NETDEV_DOWN) 213 return NOTIFY_DONE; 214 215 switch (dev->type) { 216 case ARPHRD_ROSE: 217 rose_kill_by_device(dev); 218 break; 219 case ARPHRD_AX25: 220 rose_link_device_down(dev); 221 rose_rt_device_down(dev); 222 break; 223 } 224 225 return NOTIFY_DONE; 226 } 227 228 /* 229 * Add a socket to the bound sockets list. 230 */ 231 static void rose_insert_socket(struct sock *sk) 232 { 233 234 spin_lock_bh(&rose_list_lock); 235 sk_add_node(sk, &rose_list); 236 spin_unlock_bh(&rose_list_lock); 237 } 238 239 /* 240 * Find a socket that wants to accept the Call Request we just 241 * received. 242 */ 243 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) 244 { 245 struct sock *s; 246 247 spin_lock_bh(&rose_list_lock); 248 sk_for_each(s, &rose_list) { 249 struct rose_sock *rose = rose_sk(s); 250 251 if (!rosecmp(&rose->source_addr, addr) && 252 !ax25cmp(&rose->source_call, call) && 253 !rose->source_ndigis && s->sk_state == TCP_LISTEN) 254 goto found; 255 } 256 257 sk_for_each(s, &rose_list) { 258 struct rose_sock *rose = rose_sk(s); 259 260 if (!rosecmp(&rose->source_addr, addr) && 261 !ax25cmp(&rose->source_call, &null_ax25_address) && 262 s->sk_state == TCP_LISTEN) 263 goto found; 264 } 265 s = NULL; 266 found: 267 spin_unlock_bh(&rose_list_lock); 268 return s; 269 } 270 271 /* 272 * Find a connected ROSE socket given my LCI and device. 273 */ 274 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) 275 { 276 struct sock *s; 277 278 spin_lock_bh(&rose_list_lock); 279 sk_for_each(s, &rose_list) { 280 struct rose_sock *rose = rose_sk(s); 281 282 if (rose->lci == lci && rose->neighbour == neigh) 283 goto found; 284 } 285 s = NULL; 286 found: 287 spin_unlock_bh(&rose_list_lock); 288 return s; 289 } 290 291 /* 292 * Find a unique LCI for a given device. 293 */ 294 unsigned int rose_new_lci(struct rose_neigh *neigh) 295 { 296 int lci; 297 298 if (neigh->dce_mode) { 299 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) 300 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 301 return lci; 302 } else { 303 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) 304 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 305 return lci; 306 } 307 308 return 0; 309 } 310 311 /* 312 * Deferred destroy. 313 */ 314 void rose_destroy_socket(struct sock *); 315 316 /* 317 * Handler for deferred kills. 318 */ 319 static void rose_destroy_timer(struct timer_list *t) 320 { 321 struct sock *sk = from_timer(sk, t, sk_timer); 322 323 rose_destroy_socket(sk); 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 timer_setup(&sk->sk_timer, rose_destroy_timer, 0); 357 sk->sk_timer.expires = jiffies + 10 * HZ; 358 add_timer(&sk->sk_timer); 359 } else 360 sock_put(sk); 361 } 362 363 /* 364 * Handling for system calls applied via the various interfaces to a 365 * ROSE socket object. 366 */ 367 368 static int rose_setsockopt(struct socket *sock, int level, int optname, 369 sockptr_t optval, unsigned int optlen) 370 { 371 struct sock *sk = sock->sk; 372 struct rose_sock *rose = rose_sk(sk); 373 int opt; 374 375 if (level != SOL_ROSE) 376 return -ENOPROTOOPT; 377 378 if (optlen < sizeof(int)) 379 return -EINVAL; 380 381 if (copy_from_sockptr(&opt, optval, sizeof(int))) 382 return -EFAULT; 383 384 switch (optname) { 385 case ROSE_DEFER: 386 rose->defer = opt ? 1 : 0; 387 return 0; 388 389 case ROSE_T1: 390 if (opt < 1) 391 return -EINVAL; 392 rose->t1 = opt * HZ; 393 return 0; 394 395 case ROSE_T2: 396 if (opt < 1) 397 return -EINVAL; 398 rose->t2 = opt * HZ; 399 return 0; 400 401 case ROSE_T3: 402 if (opt < 1) 403 return -EINVAL; 404 rose->t3 = opt * HZ; 405 return 0; 406 407 case ROSE_HOLDBACK: 408 if (opt < 1) 409 return -EINVAL; 410 rose->hb = opt * HZ; 411 return 0; 412 413 case ROSE_IDLE: 414 if (opt < 0) 415 return -EINVAL; 416 rose->idle = opt * 60 * HZ; 417 return 0; 418 419 case ROSE_QBITINCL: 420 rose->qbitincl = opt ? 1 : 0; 421 return 0; 422 423 default: 424 return -ENOPROTOOPT; 425 } 426 } 427 428 static int rose_getsockopt(struct socket *sock, int level, int optname, 429 char __user *optval, int __user *optlen) 430 { 431 struct sock *sk = sock->sk; 432 struct rose_sock *rose = rose_sk(sk); 433 int val = 0; 434 int len; 435 436 if (level != SOL_ROSE) 437 return -ENOPROTOOPT; 438 439 if (get_user(len, optlen)) 440 return -EFAULT; 441 442 if (len < 0) 443 return -EINVAL; 444 445 switch (optname) { 446 case ROSE_DEFER: 447 val = rose->defer; 448 break; 449 450 case ROSE_T1: 451 val = rose->t1 / HZ; 452 break; 453 454 case ROSE_T2: 455 val = rose->t2 / HZ; 456 break; 457 458 case ROSE_T3: 459 val = rose->t3 / HZ; 460 break; 461 462 case ROSE_HOLDBACK: 463 val = rose->hb / HZ; 464 break; 465 466 case ROSE_IDLE: 467 val = rose->idle / (60 * HZ); 468 break; 469 470 case ROSE_QBITINCL: 471 val = rose->qbitincl; 472 break; 473 474 default: 475 return -ENOPROTOOPT; 476 } 477 478 len = min_t(unsigned int, len, sizeof(int)); 479 480 if (put_user(len, optlen)) 481 return -EFAULT; 482 483 return copy_to_user(optval, &val, len) ? -EFAULT : 0; 484 } 485 486 static int rose_listen(struct socket *sock, int backlog) 487 { 488 struct sock *sk = sock->sk; 489 490 if (sk->sk_state != TCP_LISTEN) { 491 struct rose_sock *rose = rose_sk(sk); 492 493 rose->dest_ndigis = 0; 494 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); 495 memset(&rose->dest_call, 0, AX25_ADDR_LEN); 496 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); 497 sk->sk_max_ack_backlog = backlog; 498 sk->sk_state = TCP_LISTEN; 499 return 0; 500 } 501 502 return -EOPNOTSUPP; 503 } 504 505 static struct proto rose_proto = { 506 .name = "ROSE", 507 .owner = THIS_MODULE, 508 .obj_size = sizeof(struct rose_sock), 509 }; 510 511 static int rose_create(struct net *net, struct socket *sock, int protocol, 512 int kern) 513 { 514 struct sock *sk; 515 struct rose_sock *rose; 516 517 if (!net_eq(net, &init_net)) 518 return -EAFNOSUPPORT; 519 520 if (sock->type != SOCK_SEQPACKET || protocol != 0) 521 return -ESOCKTNOSUPPORT; 522 523 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern); 524 if (sk == NULL) 525 return -ENOMEM; 526 527 rose = rose_sk(sk); 528 529 sock_init_data(sock, sk); 530 531 skb_queue_head_init(&rose->ack_queue); 532 #ifdef M_BIT 533 skb_queue_head_init(&rose->frag_queue); 534 rose->fraglen = 0; 535 #endif 536 537 sock->ops = &rose_proto_ops; 538 sk->sk_protocol = protocol; 539 540 timer_setup(&rose->timer, NULL, 0); 541 timer_setup(&rose->idletimer, NULL, 0); 542 543 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); 544 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); 545 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); 546 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); 547 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); 548 549 rose->state = ROSE_STATE_0; 550 551 return 0; 552 } 553 554 static struct sock *rose_make_new(struct sock *osk) 555 { 556 struct sock *sk; 557 struct rose_sock *rose, *orose; 558 559 if (osk->sk_type != SOCK_SEQPACKET) 560 return NULL; 561 562 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto, 0); 563 if (sk == NULL) 564 return NULL; 565 566 rose = rose_sk(sk); 567 568 sock_init_data(NULL, sk); 569 570 skb_queue_head_init(&rose->ack_queue); 571 #ifdef M_BIT 572 skb_queue_head_init(&rose->frag_queue); 573 rose->fraglen = 0; 574 #endif 575 576 sk->sk_type = osk->sk_type; 577 sk->sk_priority = osk->sk_priority; 578 sk->sk_protocol = osk->sk_protocol; 579 sk->sk_rcvbuf = osk->sk_rcvbuf; 580 sk->sk_sndbuf = osk->sk_sndbuf; 581 sk->sk_state = TCP_ESTABLISHED; 582 sock_copy_flags(sk, osk); 583 584 timer_setup(&rose->timer, NULL, 0); 585 timer_setup(&rose->idletimer, NULL, 0); 586 587 orose = rose_sk(osk); 588 rose->t1 = orose->t1; 589 rose->t2 = orose->t2; 590 rose->t3 = orose->t3; 591 rose->hb = orose->hb; 592 rose->idle = orose->idle; 593 rose->defer = orose->defer; 594 rose->device = orose->device; 595 rose->qbitincl = orose->qbitincl; 596 597 return sk; 598 } 599 600 static int rose_release(struct socket *sock) 601 { 602 struct sock *sk = sock->sk; 603 struct rose_sock *rose; 604 605 if (sk == NULL) return 0; 606 607 sock_hold(sk); 608 sock_orphan(sk); 609 lock_sock(sk); 610 rose = rose_sk(sk); 611 612 switch (rose->state) { 613 case ROSE_STATE_0: 614 release_sock(sk); 615 rose_disconnect(sk, 0, -1, -1); 616 lock_sock(sk); 617 rose_destroy_socket(sk); 618 break; 619 620 case ROSE_STATE_2: 621 rose->neighbour->use--; 622 release_sock(sk); 623 rose_disconnect(sk, 0, -1, -1); 624 lock_sock(sk); 625 rose_destroy_socket(sk); 626 break; 627 628 case ROSE_STATE_1: 629 case ROSE_STATE_3: 630 case ROSE_STATE_4: 631 case ROSE_STATE_5: 632 rose_clear_queues(sk); 633 rose_stop_idletimer(sk); 634 rose_write_internal(sk, ROSE_CLEAR_REQUEST); 635 rose_start_t3timer(sk); 636 rose->state = ROSE_STATE_2; 637 sk->sk_state = TCP_CLOSE; 638 sk->sk_shutdown |= SEND_SHUTDOWN; 639 sk->sk_state_change(sk); 640 sock_set_flag(sk, SOCK_DEAD); 641 sock_set_flag(sk, SOCK_DESTROY); 642 break; 643 644 default: 645 break; 646 } 647 648 sock->sk = NULL; 649 release_sock(sk); 650 sock_put(sk); 651 652 return 0; 653 } 654 655 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) 656 { 657 struct sock *sk = sock->sk; 658 struct rose_sock *rose = rose_sk(sk); 659 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 660 struct net_device *dev; 661 ax25_address *source; 662 ax25_uid_assoc *user; 663 int n; 664 665 if (!sock_flag(sk, SOCK_ZAPPED)) 666 return -EINVAL; 667 668 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 669 return -EINVAL; 670 671 if (addr->srose_family != AF_ROSE) 672 return -EINVAL; 673 674 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 675 return -EINVAL; 676 677 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 678 return -EINVAL; 679 680 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) 681 return -EADDRNOTAVAIL; 682 683 source = &addr->srose_call; 684 685 user = ax25_findbyuid(current_euid()); 686 if (user) { 687 rose->source_call = user->call; 688 ax25_uid_put(user); 689 } else { 690 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) { 691 dev_put(dev); 692 return -EACCES; 693 } 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_acceptq_removed(sk); 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 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 return sizeof(struct full_sockaddr_rose); 968 } 969 970 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) 971 { 972 struct sock *sk; 973 struct sock *make; 974 struct rose_sock *make_rose; 975 struct rose_facilities_struct facilities; 976 int n; 977 978 skb->sk = NULL; /* Initially we don't know who it's for */ 979 980 /* 981 * skb->data points to the rose frame start 982 */ 983 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); 984 985 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF, 986 skb->len - ROSE_CALL_REQ_FACILITIES_OFF, 987 &facilities)) { 988 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); 989 return 0; 990 } 991 992 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); 993 994 /* 995 * We can't accept the Call Request. 996 */ 997 if (sk == NULL || sk_acceptq_is_full(sk) || 998 (make = rose_make_new(sk)) == NULL) { 999 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); 1000 return 0; 1001 } 1002 1003 skb->sk = make; 1004 make->sk_state = TCP_ESTABLISHED; 1005 make_rose = rose_sk(make); 1006 1007 make_rose->lci = lci; 1008 make_rose->dest_addr = facilities.dest_addr; 1009 make_rose->dest_call = facilities.dest_call; 1010 make_rose->dest_ndigis = facilities.dest_ndigis; 1011 for (n = 0 ; n < facilities.dest_ndigis ; n++) 1012 make_rose->dest_digis[n] = facilities.dest_digis[n]; 1013 make_rose->source_addr = facilities.source_addr; 1014 make_rose->source_call = facilities.source_call; 1015 make_rose->source_ndigis = facilities.source_ndigis; 1016 for (n = 0 ; n < facilities.source_ndigis ; n++) 1017 make_rose->source_digis[n] = facilities.source_digis[n]; 1018 make_rose->neighbour = neigh; 1019 make_rose->device = dev; 1020 make_rose->facilities = facilities; 1021 1022 make_rose->neighbour->use++; 1023 1024 if (rose_sk(sk)->defer) { 1025 make_rose->state = ROSE_STATE_5; 1026 } else { 1027 rose_write_internal(make, ROSE_CALL_ACCEPTED); 1028 make_rose->state = ROSE_STATE_3; 1029 rose_start_idletimer(make); 1030 } 1031 1032 make_rose->condition = 0x00; 1033 make_rose->vs = 0; 1034 make_rose->va = 0; 1035 make_rose->vr = 0; 1036 make_rose->vl = 0; 1037 sk_acceptq_added(sk); 1038 1039 rose_insert_socket(make); 1040 1041 skb_queue_head(&sk->sk_receive_queue, skb); 1042 1043 rose_start_heartbeat(make); 1044 1045 if (!sock_flag(sk, SOCK_DEAD)) 1046 sk->sk_data_ready(sk); 1047 1048 return 1; 1049 } 1050 1051 static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) 1052 { 1053 struct sock *sk = sock->sk; 1054 struct rose_sock *rose = rose_sk(sk); 1055 DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name); 1056 int err; 1057 struct full_sockaddr_rose srose; 1058 struct sk_buff *skb; 1059 unsigned char *asmptr; 1060 int n, size, qbit = 0; 1061 1062 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) 1063 return -EINVAL; 1064 1065 if (sock_flag(sk, SOCK_ZAPPED)) 1066 return -EADDRNOTAVAIL; 1067 1068 if (sk->sk_shutdown & SEND_SHUTDOWN) { 1069 send_sig(SIGPIPE, current, 0); 1070 return -EPIPE; 1071 } 1072 1073 if (rose->neighbour == NULL || rose->device == NULL) 1074 return -ENETUNREACH; 1075 1076 if (usrose != NULL) { 1077 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) 1078 return -EINVAL; 1079 memset(&srose, 0, sizeof(struct full_sockaddr_rose)); 1080 memcpy(&srose, usrose, msg->msg_namelen); 1081 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || 1082 ax25cmp(&rose->dest_call, &srose.srose_call) != 0) 1083 return -EISCONN; 1084 if (srose.srose_ndigis != rose->dest_ndigis) 1085 return -EISCONN; 1086 if (srose.srose_ndigis == rose->dest_ndigis) { 1087 for (n = 0 ; n < srose.srose_ndigis ; n++) 1088 if (ax25cmp(&rose->dest_digis[n], 1089 &srose.srose_digis[n])) 1090 return -EISCONN; 1091 } 1092 if (srose.srose_family != AF_ROSE) 1093 return -EINVAL; 1094 } else { 1095 if (sk->sk_state != TCP_ESTABLISHED) 1096 return -ENOTCONN; 1097 1098 srose.srose_family = AF_ROSE; 1099 srose.srose_addr = rose->dest_addr; 1100 srose.srose_call = rose->dest_call; 1101 srose.srose_ndigis = rose->dest_ndigis; 1102 for (n = 0 ; n < rose->dest_ndigis ; n++) 1103 srose.srose_digis[n] = rose->dest_digis[n]; 1104 } 1105 1106 /* Build a packet */ 1107 /* Sanity check the packet size */ 1108 if (len > 65535) 1109 return -EMSGSIZE; 1110 1111 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; 1112 1113 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) 1114 return err; 1115 1116 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); 1117 1118 /* 1119 * Put the data on the end 1120 */ 1121 1122 skb_reset_transport_header(skb); 1123 skb_put(skb, len); 1124 1125 err = memcpy_from_msg(skb_transport_header(skb), msg, len); 1126 if (err) { 1127 kfree_skb(skb); 1128 return err; 1129 } 1130 1131 /* 1132 * If the Q BIT Include socket option is in force, the first 1133 * byte of the user data is the logical value of the Q Bit. 1134 */ 1135 if (rose->qbitincl) { 1136 qbit = skb->data[0]; 1137 skb_pull(skb, 1); 1138 } 1139 1140 /* 1141 * Push down the ROSE header 1142 */ 1143 asmptr = skb_push(skb, ROSE_MIN_LEN); 1144 1145 /* Build a ROSE Network header */ 1146 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; 1147 asmptr[1] = (rose->lci >> 0) & 0xFF; 1148 asmptr[2] = ROSE_DATA; 1149 1150 if (qbit) 1151 asmptr[0] |= ROSE_Q_BIT; 1152 1153 if (sk->sk_state != TCP_ESTABLISHED) { 1154 kfree_skb(skb); 1155 return -ENOTCONN; 1156 } 1157 1158 #ifdef M_BIT 1159 #define ROSE_PACLEN (256-ROSE_MIN_LEN) 1160 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { 1161 unsigned char header[ROSE_MIN_LEN]; 1162 struct sk_buff *skbn; 1163 int frontlen; 1164 int lg; 1165 1166 /* Save a copy of the Header */ 1167 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); 1168 skb_pull(skb, ROSE_MIN_LEN); 1169 1170 frontlen = skb_headroom(skb); 1171 1172 while (skb->len > 0) { 1173 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { 1174 kfree_skb(skb); 1175 return err; 1176 } 1177 1178 skbn->sk = sk; 1179 skbn->free = 1; 1180 skbn->arp = 1; 1181 1182 skb_reserve(skbn, frontlen); 1183 1184 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; 1185 1186 /* Copy the user data */ 1187 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); 1188 skb_pull(skb, lg); 1189 1190 /* Duplicate the Header */ 1191 skb_push(skbn, ROSE_MIN_LEN); 1192 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); 1193 1194 if (skb->len > 0) 1195 skbn->data[2] |= M_BIT; 1196 1197 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ 1198 } 1199 1200 skb->free = 1; 1201 kfree_skb(skb); 1202 } else { 1203 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ 1204 } 1205 #else 1206 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ 1207 #endif 1208 1209 rose_kick(sk); 1210 1211 return len; 1212 } 1213 1214 1215 static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, 1216 int flags) 1217 { 1218 struct sock *sk = sock->sk; 1219 struct rose_sock *rose = rose_sk(sk); 1220 size_t copied; 1221 unsigned char *asmptr; 1222 struct sk_buff *skb; 1223 int n, er, qbit; 1224 1225 /* 1226 * This works for seqpacket too. The receiver has ordered the queue for 1227 * us! We do one quick check first though 1228 */ 1229 if (sk->sk_state != TCP_ESTABLISHED) 1230 return -ENOTCONN; 1231 1232 /* Now we can treat all alike */ 1233 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) 1234 return er; 1235 1236 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; 1237 1238 skb_pull(skb, ROSE_MIN_LEN); 1239 1240 if (rose->qbitincl) { 1241 asmptr = skb_push(skb, 1); 1242 *asmptr = qbit; 1243 } 1244 1245 skb_reset_transport_header(skb); 1246 copied = skb->len; 1247 1248 if (copied > size) { 1249 copied = size; 1250 msg->msg_flags |= MSG_TRUNC; 1251 } 1252 1253 skb_copy_datagram_msg(skb, 0, msg, copied); 1254 1255 if (msg->msg_name) { 1256 struct sockaddr_rose *srose; 1257 DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose, 1258 msg->msg_name); 1259 1260 memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose)); 1261 srose = msg->msg_name; 1262 srose->srose_family = AF_ROSE; 1263 srose->srose_addr = rose->dest_addr; 1264 srose->srose_call = rose->dest_call; 1265 srose->srose_ndigis = rose->dest_ndigis; 1266 for (n = 0 ; n < rose->dest_ndigis ; n++) 1267 full_srose->srose_digis[n] = rose->dest_digis[n]; 1268 msg->msg_namelen = sizeof(struct full_sockaddr_rose); 1269 } 1270 1271 skb_free_datagram(sk, skb); 1272 1273 return copied; 1274 } 1275 1276 1277 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 1278 { 1279 struct sock *sk = sock->sk; 1280 struct rose_sock *rose = rose_sk(sk); 1281 void __user *argp = (void __user *)arg; 1282 1283 switch (cmd) { 1284 case TIOCOUTQ: { 1285 long amount; 1286 1287 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); 1288 if (amount < 0) 1289 amount = 0; 1290 return put_user(amount, (unsigned int __user *) argp); 1291 } 1292 1293 case TIOCINQ: { 1294 struct sk_buff *skb; 1295 long amount = 0L; 1296 /* These two are safe on a single CPU system as only user tasks fiddle here */ 1297 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) 1298 amount = skb->len; 1299 return put_user(amount, (unsigned int __user *) argp); 1300 } 1301 1302 case SIOCGIFADDR: 1303 case SIOCSIFADDR: 1304 case SIOCGIFDSTADDR: 1305 case SIOCSIFDSTADDR: 1306 case SIOCGIFBRDADDR: 1307 case SIOCSIFBRDADDR: 1308 case SIOCGIFNETMASK: 1309 case SIOCSIFNETMASK: 1310 case SIOCGIFMETRIC: 1311 case SIOCSIFMETRIC: 1312 return -EINVAL; 1313 1314 case SIOCADDRT: 1315 case SIOCDELRT: 1316 case SIOCRSCLRRT: 1317 if (!capable(CAP_NET_ADMIN)) 1318 return -EPERM; 1319 return rose_rt_ioctl(cmd, argp); 1320 1321 case SIOCRSGCAUSE: { 1322 struct rose_cause_struct rose_cause; 1323 rose_cause.cause = rose->cause; 1324 rose_cause.diagnostic = rose->diagnostic; 1325 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; 1326 } 1327 1328 case SIOCRSSCAUSE: { 1329 struct rose_cause_struct rose_cause; 1330 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) 1331 return -EFAULT; 1332 rose->cause = rose_cause.cause; 1333 rose->diagnostic = rose_cause.diagnostic; 1334 return 0; 1335 } 1336 1337 case SIOCRSSL2CALL: 1338 if (!capable(CAP_NET_ADMIN)) return -EPERM; 1339 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1340 ax25_listen_release(&rose_callsign, NULL); 1341 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) 1342 return -EFAULT; 1343 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1344 return ax25_listen_register(&rose_callsign, NULL); 1345 1346 return 0; 1347 1348 case SIOCRSGL2CALL: 1349 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; 1350 1351 case SIOCRSACCEPT: 1352 if (rose->state == ROSE_STATE_5) { 1353 rose_write_internal(sk, ROSE_CALL_ACCEPTED); 1354 rose_start_idletimer(sk); 1355 rose->condition = 0x00; 1356 rose->vs = 0; 1357 rose->va = 0; 1358 rose->vr = 0; 1359 rose->vl = 0; 1360 rose->state = ROSE_STATE_3; 1361 } 1362 return 0; 1363 1364 default: 1365 return -ENOIOCTLCMD; 1366 } 1367 1368 return 0; 1369 } 1370 1371 #ifdef CONFIG_PROC_FS 1372 static void *rose_info_start(struct seq_file *seq, loff_t *pos) 1373 __acquires(rose_list_lock) 1374 { 1375 spin_lock_bh(&rose_list_lock); 1376 return seq_hlist_start_head(&rose_list, *pos); 1377 } 1378 1379 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) 1380 { 1381 return seq_hlist_next(v, &rose_list, pos); 1382 } 1383 1384 static void rose_info_stop(struct seq_file *seq, void *v) 1385 __releases(rose_list_lock) 1386 { 1387 spin_unlock_bh(&rose_list_lock); 1388 } 1389 1390 static int rose_info_show(struct seq_file *seq, void *v) 1391 { 1392 char buf[11], rsbuf[11]; 1393 1394 if (v == SEQ_START_TOKEN) 1395 seq_puts(seq, 1396 "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"); 1397 1398 else { 1399 struct sock *s = sk_entry(v); 1400 struct rose_sock *rose = rose_sk(s); 1401 const char *devname, *callsign; 1402 const struct net_device *dev = rose->device; 1403 1404 if (!dev) 1405 devname = "???"; 1406 else 1407 devname = dev->name; 1408 1409 seq_printf(seq, "%-10s %-9s ", 1410 rose2asc(rsbuf, &rose->dest_addr), 1411 ax2asc(buf, &rose->dest_call)); 1412 1413 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) 1414 callsign = "??????-?"; 1415 else 1416 callsign = ax2asc(buf, &rose->source_call); 1417 1418 seq_printf(seq, 1419 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", 1420 rose2asc(rsbuf, &rose->source_addr), 1421 callsign, 1422 devname, 1423 rose->lci & 0x0FFF, 1424 (rose->neighbour) ? rose->neighbour->number : 0, 1425 rose->state, 1426 rose->vs, 1427 rose->vr, 1428 rose->va, 1429 ax25_display_timer(&rose->timer) / HZ, 1430 rose->t1 / HZ, 1431 rose->t2 / HZ, 1432 rose->t3 / HZ, 1433 rose->hb / HZ, 1434 ax25_display_timer(&rose->idletimer) / (60 * HZ), 1435 rose->idle / (60 * HZ), 1436 sk_wmem_alloc_get(s), 1437 sk_rmem_alloc_get(s), 1438 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); 1439 } 1440 1441 return 0; 1442 } 1443 1444 static const struct seq_operations rose_info_seqops = { 1445 .start = rose_info_start, 1446 .next = rose_info_next, 1447 .stop = rose_info_stop, 1448 .show = rose_info_show, 1449 }; 1450 #endif /* CONFIG_PROC_FS */ 1451 1452 static const struct net_proto_family rose_family_ops = { 1453 .family = PF_ROSE, 1454 .create = rose_create, 1455 .owner = THIS_MODULE, 1456 }; 1457 1458 static const struct proto_ops rose_proto_ops = { 1459 .family = PF_ROSE, 1460 .owner = THIS_MODULE, 1461 .release = rose_release, 1462 .bind = rose_bind, 1463 .connect = rose_connect, 1464 .socketpair = sock_no_socketpair, 1465 .accept = rose_accept, 1466 .getname = rose_getname, 1467 .poll = datagram_poll, 1468 .ioctl = rose_ioctl, 1469 .gettstamp = sock_gettstamp, 1470 .listen = rose_listen, 1471 .shutdown = sock_no_shutdown, 1472 .setsockopt = rose_setsockopt, 1473 .getsockopt = rose_getsockopt, 1474 .sendmsg = rose_sendmsg, 1475 .recvmsg = rose_recvmsg, 1476 .mmap = sock_no_mmap, 1477 .sendpage = sock_no_sendpage, 1478 }; 1479 1480 static struct notifier_block rose_dev_notifier = { 1481 .notifier_call = rose_device_event, 1482 }; 1483 1484 static struct net_device **dev_rose; 1485 1486 static struct ax25_protocol rose_pid = { 1487 .pid = AX25_P_ROSE, 1488 .func = rose_route_frame 1489 }; 1490 1491 static struct ax25_linkfail rose_linkfail_notifier = { 1492 .func = rose_link_failed 1493 }; 1494 1495 static int __init rose_proto_init(void) 1496 { 1497 int i; 1498 int rc; 1499 1500 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { 1501 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter too large\n"); 1502 rc = -EINVAL; 1503 goto out; 1504 } 1505 1506 rc = proto_register(&rose_proto, 0); 1507 if (rc != 0) 1508 goto out; 1509 1510 rose_callsign = null_ax25_address; 1511 1512 dev_rose = kcalloc(rose_ndevs, sizeof(struct net_device *), 1513 GFP_KERNEL); 1514 if (dev_rose == NULL) { 1515 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); 1516 rc = -ENOMEM; 1517 goto out_proto_unregister; 1518 } 1519 1520 for (i = 0; i < rose_ndevs; i++) { 1521 struct net_device *dev; 1522 char name[IFNAMSIZ]; 1523 1524 sprintf(name, "rose%d", i); 1525 dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup); 1526 if (!dev) { 1527 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); 1528 rc = -ENOMEM; 1529 goto fail; 1530 } 1531 rc = register_netdev(dev); 1532 if (rc) { 1533 printk(KERN_ERR "ROSE: netdevice registration failed\n"); 1534 free_netdev(dev); 1535 goto fail; 1536 } 1537 rose_set_lockdep_key(dev); 1538 dev_rose[i] = dev; 1539 } 1540 1541 sock_register(&rose_family_ops); 1542 register_netdevice_notifier(&rose_dev_notifier); 1543 1544 ax25_register_pid(&rose_pid); 1545 ax25_linkfail_register(&rose_linkfail_notifier); 1546 1547 #ifdef CONFIG_SYSCTL 1548 rose_register_sysctl(); 1549 #endif 1550 rose_loopback_init(); 1551 1552 rose_add_loopback_neigh(); 1553 1554 proc_create_seq("rose", 0444, init_net.proc_net, &rose_info_seqops); 1555 proc_create_seq("rose_neigh", 0444, init_net.proc_net, 1556 &rose_neigh_seqops); 1557 proc_create_seq("rose_nodes", 0444, init_net.proc_net, 1558 &rose_node_seqops); 1559 proc_create_seq("rose_routes", 0444, init_net.proc_net, 1560 &rose_route_seqops); 1561 out: 1562 return rc; 1563 fail: 1564 while (--i >= 0) { 1565 unregister_netdev(dev_rose[i]); 1566 free_netdev(dev_rose[i]); 1567 } 1568 kfree(dev_rose); 1569 out_proto_unregister: 1570 proto_unregister(&rose_proto); 1571 goto out; 1572 } 1573 module_init(rose_proto_init); 1574 1575 module_param(rose_ndevs, int, 0); 1576 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); 1577 1578 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); 1579 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); 1580 MODULE_LICENSE("GPL"); 1581 MODULE_ALIAS_NETPROTO(PF_ROSE); 1582 1583 static void __exit rose_exit(void) 1584 { 1585 int i; 1586 1587 remove_proc_entry("rose", init_net.proc_net); 1588 remove_proc_entry("rose_neigh", init_net.proc_net); 1589 remove_proc_entry("rose_nodes", init_net.proc_net); 1590 remove_proc_entry("rose_routes", init_net.proc_net); 1591 rose_loopback_clear(); 1592 1593 rose_rt_free(); 1594 1595 ax25_protocol_release(AX25_P_ROSE); 1596 ax25_linkfail_release(&rose_linkfail_notifier); 1597 1598 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1599 ax25_listen_release(&rose_callsign, NULL); 1600 1601 #ifdef CONFIG_SYSCTL 1602 rose_unregister_sysctl(); 1603 #endif 1604 unregister_netdevice_notifier(&rose_dev_notifier); 1605 1606 sock_unregister(PF_ROSE); 1607 1608 for (i = 0; i < rose_ndevs; i++) { 1609 struct net_device *dev = dev_rose[i]; 1610 1611 if (dev) { 1612 unregister_netdev(dev); 1613 free_netdev(dev); 1614 } 1615 } 1616 1617 kfree(dev_rose); 1618 proto_unregister(&rose_proto); 1619 } 1620 1621 module_exit(rose_exit); 1622