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 75 static void rose_set_lockdep_one(struct net_device *dev, 76 struct netdev_queue *txq, 77 void *_unused) 78 { 79 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); 80 } 81 82 static void rose_set_lockdep_key(struct net_device *dev) 83 { 84 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL); 85 } 86 87 /* 88 * Convert a ROSE address into text. 89 */ 90 char *rose2asc(char *buf, const rose_address *addr) 91 { 92 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 && 93 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 && 94 addr->rose_addr[4] == 0x00) { 95 strcpy(buf, "*"); 96 } else { 97 sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF, 98 addr->rose_addr[1] & 0xFF, 99 addr->rose_addr[2] & 0xFF, 100 addr->rose_addr[3] & 0xFF, 101 addr->rose_addr[4] & 0xFF); 102 } 103 104 return buf; 105 } 106 107 /* 108 * Compare two ROSE addresses, 0 == equal. 109 */ 110 int rosecmp(rose_address *addr1, rose_address *addr2) 111 { 112 int i; 113 114 for (i = 0; i < 5; i++) 115 if (addr1->rose_addr[i] != addr2->rose_addr[i]) 116 return 1; 117 118 return 0; 119 } 120 121 /* 122 * Compare two ROSE addresses for only mask digits, 0 == equal. 123 */ 124 int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask) 125 { 126 unsigned int i, j; 127 128 if (mask > 10) 129 return 1; 130 131 for (i = 0; i < mask; i++) { 132 j = i / 2; 133 134 if ((i % 2) != 0) { 135 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) 136 return 1; 137 } else { 138 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) 139 return 1; 140 } 141 } 142 143 return 0; 144 } 145 146 /* 147 * Socket removal during an interrupt is now safe. 148 */ 149 static void rose_remove_socket(struct sock *sk) 150 { 151 spin_lock_bh(&rose_list_lock); 152 sk_del_node_init(sk); 153 spin_unlock_bh(&rose_list_lock); 154 } 155 156 /* 157 * Kill all bound sockets on a broken link layer connection to a 158 * particular neighbour. 159 */ 160 void rose_kill_by_neigh(struct rose_neigh *neigh) 161 { 162 struct sock *s; 163 164 spin_lock_bh(&rose_list_lock); 165 sk_for_each(s, &rose_list) { 166 struct rose_sock *rose = rose_sk(s); 167 168 if (rose->neighbour == neigh) { 169 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 170 rose->neighbour->use--; 171 rose->neighbour = NULL; 172 } 173 } 174 spin_unlock_bh(&rose_list_lock); 175 } 176 177 /* 178 * Kill all bound sockets on a dropped device. 179 */ 180 static void rose_kill_by_device(struct net_device *dev) 181 { 182 struct sock *s; 183 184 spin_lock_bh(&rose_list_lock); 185 sk_for_each(s, &rose_list) { 186 struct rose_sock *rose = rose_sk(s); 187 188 if (rose->device == dev) { 189 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 190 if (rose->neighbour) 191 rose->neighbour->use--; 192 rose->device = NULL; 193 } 194 } 195 spin_unlock_bh(&rose_list_lock); 196 } 197 198 /* 199 * Handle device status changes. 200 */ 201 static int rose_device_event(struct notifier_block *this, 202 unsigned long event, void *ptr) 203 { 204 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 205 206 if (!net_eq(dev_net(dev), &init_net)) 207 return NOTIFY_DONE; 208 209 if (event != NETDEV_DOWN) 210 return NOTIFY_DONE; 211 212 switch (dev->type) { 213 case ARPHRD_ROSE: 214 rose_kill_by_device(dev); 215 break; 216 case ARPHRD_AX25: 217 rose_link_device_down(dev); 218 rose_rt_device_down(dev); 219 break; 220 } 221 222 return NOTIFY_DONE; 223 } 224 225 /* 226 * Add a socket to the bound sockets list. 227 */ 228 static void rose_insert_socket(struct sock *sk) 229 { 230 231 spin_lock_bh(&rose_list_lock); 232 sk_add_node(sk, &rose_list); 233 spin_unlock_bh(&rose_list_lock); 234 } 235 236 /* 237 * Find a socket that wants to accept the Call Request we just 238 * received. 239 */ 240 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) 241 { 242 struct sock *s; 243 244 spin_lock_bh(&rose_list_lock); 245 sk_for_each(s, &rose_list) { 246 struct rose_sock *rose = rose_sk(s); 247 248 if (!rosecmp(&rose->source_addr, addr) && 249 !ax25cmp(&rose->source_call, call) && 250 !rose->source_ndigis && s->sk_state == TCP_LISTEN) 251 goto found; 252 } 253 254 sk_for_each(s, &rose_list) { 255 struct rose_sock *rose = rose_sk(s); 256 257 if (!rosecmp(&rose->source_addr, addr) && 258 !ax25cmp(&rose->source_call, &null_ax25_address) && 259 s->sk_state == TCP_LISTEN) 260 goto found; 261 } 262 s = NULL; 263 found: 264 spin_unlock_bh(&rose_list_lock); 265 return s; 266 } 267 268 /* 269 * Find a connected ROSE socket given my LCI and device. 270 */ 271 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) 272 { 273 struct sock *s; 274 275 spin_lock_bh(&rose_list_lock); 276 sk_for_each(s, &rose_list) { 277 struct rose_sock *rose = rose_sk(s); 278 279 if (rose->lci == lci && rose->neighbour == neigh) 280 goto found; 281 } 282 s = NULL; 283 found: 284 spin_unlock_bh(&rose_list_lock); 285 return s; 286 } 287 288 /* 289 * Find a unique LCI for a given device. 290 */ 291 unsigned int rose_new_lci(struct rose_neigh *neigh) 292 { 293 int lci; 294 295 if (neigh->dce_mode) { 296 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) 297 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 298 return lci; 299 } else { 300 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) 301 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 302 return lci; 303 } 304 305 return 0; 306 } 307 308 /* 309 * Deferred destroy. 310 */ 311 void rose_destroy_socket(struct sock *); 312 313 /* 314 * Handler for deferred kills. 315 */ 316 static void rose_destroy_timer(struct timer_list *t) 317 { 318 struct sock *sk = from_timer(sk, t, sk_timer); 319 320 rose_destroy_socket(sk); 321 } 322 323 /* 324 * This is called from user mode and the timers. Thus it protects itself 325 * against interrupt users but doesn't worry about being called during 326 * work. Once it is removed from the queue no interrupt or bottom half 327 * will touch it and we are (fairly 8-) ) safe. 328 */ 329 void rose_destroy_socket(struct sock *sk) 330 { 331 struct sk_buff *skb; 332 333 rose_remove_socket(sk); 334 rose_stop_heartbeat(sk); 335 rose_stop_idletimer(sk); 336 rose_stop_timer(sk); 337 338 rose_clear_queues(sk); /* Flush the queues */ 339 340 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { 341 if (skb->sk != sk) { /* A pending connection */ 342 /* Queue the unaccepted socket for death */ 343 sock_set_flag(skb->sk, SOCK_DEAD); 344 rose_start_heartbeat(skb->sk); 345 rose_sk(skb->sk)->state = ROSE_STATE_0; 346 } 347 348 kfree_skb(skb); 349 } 350 351 if (sk_has_allocations(sk)) { 352 /* Defer: outstanding buffers */ 353 timer_setup(&sk->sk_timer, rose_destroy_timer, 0); 354 sk->sk_timer.expires = jiffies + 10 * HZ; 355 add_timer(&sk->sk_timer); 356 } else 357 sock_put(sk); 358 } 359 360 /* 361 * Handling for system calls applied via the various interfaces to a 362 * ROSE socket object. 363 */ 364 365 static int rose_setsockopt(struct socket *sock, int level, int optname, 366 char __user *optval, unsigned int optlen) 367 { 368 struct sock *sk = sock->sk; 369 struct rose_sock *rose = rose_sk(sk); 370 int opt; 371 372 if (level != SOL_ROSE) 373 return -ENOPROTOOPT; 374 375 if (optlen < sizeof(int)) 376 return -EINVAL; 377 378 if (get_user(opt, (int __user *)optval)) 379 return -EFAULT; 380 381 switch (optname) { 382 case ROSE_DEFER: 383 rose->defer = opt ? 1 : 0; 384 return 0; 385 386 case ROSE_T1: 387 if (opt < 1) 388 return -EINVAL; 389 rose->t1 = opt * HZ; 390 return 0; 391 392 case ROSE_T2: 393 if (opt < 1) 394 return -EINVAL; 395 rose->t2 = opt * HZ; 396 return 0; 397 398 case ROSE_T3: 399 if (opt < 1) 400 return -EINVAL; 401 rose->t3 = opt * HZ; 402 return 0; 403 404 case ROSE_HOLDBACK: 405 if (opt < 1) 406 return -EINVAL; 407 rose->hb = opt * HZ; 408 return 0; 409 410 case ROSE_IDLE: 411 if (opt < 0) 412 return -EINVAL; 413 rose->idle = opt * 60 * HZ; 414 return 0; 415 416 case ROSE_QBITINCL: 417 rose->qbitincl = opt ? 1 : 0; 418 return 0; 419 420 default: 421 return -ENOPROTOOPT; 422 } 423 } 424 425 static int rose_getsockopt(struct socket *sock, int level, int optname, 426 char __user *optval, int __user *optlen) 427 { 428 struct sock *sk = sock->sk; 429 struct rose_sock *rose = rose_sk(sk); 430 int val = 0; 431 int len; 432 433 if (level != SOL_ROSE) 434 return -ENOPROTOOPT; 435 436 if (get_user(len, optlen)) 437 return -EFAULT; 438 439 if (len < 0) 440 return -EINVAL; 441 442 switch (optname) { 443 case ROSE_DEFER: 444 val = rose->defer; 445 break; 446 447 case ROSE_T1: 448 val = rose->t1 / HZ; 449 break; 450 451 case ROSE_T2: 452 val = rose->t2 / HZ; 453 break; 454 455 case ROSE_T3: 456 val = rose->t3 / HZ; 457 break; 458 459 case ROSE_HOLDBACK: 460 val = rose->hb / HZ; 461 break; 462 463 case ROSE_IDLE: 464 val = rose->idle / (60 * HZ); 465 break; 466 467 case ROSE_QBITINCL: 468 val = rose->qbitincl; 469 break; 470 471 default: 472 return -ENOPROTOOPT; 473 } 474 475 len = min_t(unsigned int, len, sizeof(int)); 476 477 if (put_user(len, optlen)) 478 return -EFAULT; 479 480 return copy_to_user(optval, &val, len) ? -EFAULT : 0; 481 } 482 483 static int rose_listen(struct socket *sock, int backlog) 484 { 485 struct sock *sk = sock->sk; 486 487 if (sk->sk_state != TCP_LISTEN) { 488 struct rose_sock *rose = rose_sk(sk); 489 490 rose->dest_ndigis = 0; 491 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); 492 memset(&rose->dest_call, 0, AX25_ADDR_LEN); 493 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); 494 sk->sk_max_ack_backlog = backlog; 495 sk->sk_state = TCP_LISTEN; 496 return 0; 497 } 498 499 return -EOPNOTSUPP; 500 } 501 502 static struct proto rose_proto = { 503 .name = "ROSE", 504 .owner = THIS_MODULE, 505 .obj_size = sizeof(struct rose_sock), 506 }; 507 508 static int rose_create(struct net *net, struct socket *sock, int protocol, 509 int kern) 510 { 511 struct sock *sk; 512 struct rose_sock *rose; 513 514 if (!net_eq(net, &init_net)) 515 return -EAFNOSUPPORT; 516 517 if (sock->type != SOCK_SEQPACKET || protocol != 0) 518 return -ESOCKTNOSUPPORT; 519 520 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern); 521 if (sk == NULL) 522 return -ENOMEM; 523 524 rose = rose_sk(sk); 525 526 sock_init_data(sock, sk); 527 528 skb_queue_head_init(&rose->ack_queue); 529 #ifdef M_BIT 530 skb_queue_head_init(&rose->frag_queue); 531 rose->fraglen = 0; 532 #endif 533 534 sock->ops = &rose_proto_ops; 535 sk->sk_protocol = protocol; 536 537 timer_setup(&rose->timer, NULL, 0); 538 timer_setup(&rose->idletimer, NULL, 0); 539 540 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); 541 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); 542 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); 543 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); 544 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); 545 546 rose->state = ROSE_STATE_0; 547 548 return 0; 549 } 550 551 static struct sock *rose_make_new(struct sock *osk) 552 { 553 struct sock *sk; 554 struct rose_sock *rose, *orose; 555 556 if (osk->sk_type != SOCK_SEQPACKET) 557 return NULL; 558 559 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto, 0); 560 if (sk == NULL) 561 return NULL; 562 563 rose = rose_sk(sk); 564 565 sock_init_data(NULL, sk); 566 567 skb_queue_head_init(&rose->ack_queue); 568 #ifdef M_BIT 569 skb_queue_head_init(&rose->frag_queue); 570 rose->fraglen = 0; 571 #endif 572 573 sk->sk_type = osk->sk_type; 574 sk->sk_priority = osk->sk_priority; 575 sk->sk_protocol = osk->sk_protocol; 576 sk->sk_rcvbuf = osk->sk_rcvbuf; 577 sk->sk_sndbuf = osk->sk_sndbuf; 578 sk->sk_state = TCP_ESTABLISHED; 579 sock_copy_flags(sk, osk); 580 581 timer_setup(&rose->timer, NULL, 0); 582 timer_setup(&rose->idletimer, NULL, 0); 583 584 orose = rose_sk(osk); 585 rose->t1 = orose->t1; 586 rose->t2 = orose->t2; 587 rose->t3 = orose->t3; 588 rose->hb = orose->hb; 589 rose->idle = orose->idle; 590 rose->defer = orose->defer; 591 rose->device = orose->device; 592 rose->qbitincl = orose->qbitincl; 593 594 return sk; 595 } 596 597 static int rose_release(struct socket *sock) 598 { 599 struct sock *sk = sock->sk; 600 struct rose_sock *rose; 601 602 if (sk == NULL) return 0; 603 604 sock_hold(sk); 605 sock_orphan(sk); 606 lock_sock(sk); 607 rose = rose_sk(sk); 608 609 switch (rose->state) { 610 case ROSE_STATE_0: 611 release_sock(sk); 612 rose_disconnect(sk, 0, -1, -1); 613 lock_sock(sk); 614 rose_destroy_socket(sk); 615 break; 616 617 case ROSE_STATE_2: 618 rose->neighbour->use--; 619 release_sock(sk); 620 rose_disconnect(sk, 0, -1, -1); 621 lock_sock(sk); 622 rose_destroy_socket(sk); 623 break; 624 625 case ROSE_STATE_1: 626 case ROSE_STATE_3: 627 case ROSE_STATE_4: 628 case ROSE_STATE_5: 629 rose_clear_queues(sk); 630 rose_stop_idletimer(sk); 631 rose_write_internal(sk, ROSE_CLEAR_REQUEST); 632 rose_start_t3timer(sk); 633 rose->state = ROSE_STATE_2; 634 sk->sk_state = TCP_CLOSE; 635 sk->sk_shutdown |= SEND_SHUTDOWN; 636 sk->sk_state_change(sk); 637 sock_set_flag(sk, SOCK_DEAD); 638 sock_set_flag(sk, SOCK_DESTROY); 639 break; 640 641 default: 642 break; 643 } 644 645 sock->sk = NULL; 646 release_sock(sk); 647 sock_put(sk); 648 649 return 0; 650 } 651 652 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) 653 { 654 struct sock *sk = sock->sk; 655 struct rose_sock *rose = rose_sk(sk); 656 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 657 struct net_device *dev; 658 ax25_address *source; 659 ax25_uid_assoc *user; 660 int n; 661 662 if (!sock_flag(sk, SOCK_ZAPPED)) 663 return -EINVAL; 664 665 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 666 return -EINVAL; 667 668 if (addr->srose_family != AF_ROSE) 669 return -EINVAL; 670 671 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 672 return -EINVAL; 673 674 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 675 return -EINVAL; 676 677 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) 678 return -EADDRNOTAVAIL; 679 680 source = &addr->srose_call; 681 682 user = ax25_findbyuid(current_euid()); 683 if (user) { 684 rose->source_call = user->call; 685 ax25_uid_put(user); 686 } else { 687 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) { 688 dev_put(dev); 689 return -EACCES; 690 } 691 rose->source_call = *source; 692 } 693 694 rose->source_addr = addr->srose_addr; 695 rose->device = dev; 696 rose->source_ndigis = addr->srose_ndigis; 697 698 if (addr_len == sizeof(struct full_sockaddr_rose)) { 699 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 700 for (n = 0 ; n < addr->srose_ndigis ; n++) 701 rose->source_digis[n] = full_addr->srose_digis[n]; 702 } else { 703 if (rose->source_ndigis == 1) { 704 rose->source_digis[0] = addr->srose_digi; 705 } 706 } 707 708 rose_insert_socket(sk); 709 710 sock_reset_flag(sk, SOCK_ZAPPED); 711 712 return 0; 713 } 714 715 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) 716 { 717 struct sock *sk = sock->sk; 718 struct rose_sock *rose = rose_sk(sk); 719 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 720 unsigned char cause, diagnostic; 721 struct net_device *dev; 722 ax25_uid_assoc *user; 723 int n, err = 0; 724 725 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 726 return -EINVAL; 727 728 if (addr->srose_family != AF_ROSE) 729 return -EINVAL; 730 731 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 732 return -EINVAL; 733 734 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 735 return -EINVAL; 736 737 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ 738 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) 739 return -EINVAL; 740 741 lock_sock(sk); 742 743 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { 744 /* Connect completed during a ERESTARTSYS event */ 745 sock->state = SS_CONNECTED; 746 goto out_release; 747 } 748 749 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { 750 sock->state = SS_UNCONNECTED; 751 err = -ECONNREFUSED; 752 goto out_release; 753 } 754 755 if (sk->sk_state == TCP_ESTABLISHED) { 756 /* No reconnect on a seqpacket socket */ 757 err = -EISCONN; 758 goto out_release; 759 } 760 761 sk->sk_state = TCP_CLOSE; 762 sock->state = SS_UNCONNECTED; 763 764 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, 765 &diagnostic, 0); 766 if (!rose->neighbour) { 767 err = -ENETUNREACH; 768 goto out_release; 769 } 770 771 rose->lci = rose_new_lci(rose->neighbour); 772 if (!rose->lci) { 773 err = -ENETUNREACH; 774 goto out_release; 775 } 776 777 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ 778 sock_reset_flag(sk, SOCK_ZAPPED); 779 780 if ((dev = rose_dev_first()) == NULL) { 781 err = -ENETUNREACH; 782 goto out_release; 783 } 784 785 user = ax25_findbyuid(current_euid()); 786 if (!user) { 787 err = -EINVAL; 788 goto out_release; 789 } 790 791 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); 792 rose->source_call = user->call; 793 rose->device = dev; 794 ax25_uid_put(user); 795 796 rose_insert_socket(sk); /* Finish the bind */ 797 } 798 rose->dest_addr = addr->srose_addr; 799 rose->dest_call = addr->srose_call; 800 rose->rand = ((long)rose & 0xFFFF) + rose->lci; 801 rose->dest_ndigis = addr->srose_ndigis; 802 803 if (addr_len == sizeof(struct full_sockaddr_rose)) { 804 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 805 for (n = 0 ; n < addr->srose_ndigis ; n++) 806 rose->dest_digis[n] = full_addr->srose_digis[n]; 807 } else { 808 if (rose->dest_ndigis == 1) { 809 rose->dest_digis[0] = addr->srose_digi; 810 } 811 } 812 813 /* Move to connecting socket, start sending Connect Requests */ 814 sock->state = SS_CONNECTING; 815 sk->sk_state = TCP_SYN_SENT; 816 817 rose->state = ROSE_STATE_1; 818 819 rose->neighbour->use++; 820 821 rose_write_internal(sk, ROSE_CALL_REQUEST); 822 rose_start_heartbeat(sk); 823 rose_start_t1timer(sk); 824 825 /* Now the loop */ 826 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) { 827 err = -EINPROGRESS; 828 goto out_release; 829 } 830 831 /* 832 * A Connect Ack with Choke or timeout or failed routing will go to 833 * closed. 834 */ 835 if (sk->sk_state == TCP_SYN_SENT) { 836 DEFINE_WAIT(wait); 837 838 for (;;) { 839 prepare_to_wait(sk_sleep(sk), &wait, 840 TASK_INTERRUPTIBLE); 841 if (sk->sk_state != TCP_SYN_SENT) 842 break; 843 if (!signal_pending(current)) { 844 release_sock(sk); 845 schedule(); 846 lock_sock(sk); 847 continue; 848 } 849 err = -ERESTARTSYS; 850 break; 851 } 852 finish_wait(sk_sleep(sk), &wait); 853 854 if (err) 855 goto out_release; 856 } 857 858 if (sk->sk_state != TCP_ESTABLISHED) { 859 sock->state = SS_UNCONNECTED; 860 err = sock_error(sk); /* Always set at this point */ 861 goto out_release; 862 } 863 864 sock->state = SS_CONNECTED; 865 866 out_release: 867 release_sock(sk); 868 869 return err; 870 } 871 872 static int rose_accept(struct socket *sock, struct socket *newsock, int flags, 873 bool kern) 874 { 875 struct sk_buff *skb; 876 struct sock *newsk; 877 DEFINE_WAIT(wait); 878 struct sock *sk; 879 int err = 0; 880 881 if ((sk = sock->sk) == NULL) 882 return -EINVAL; 883 884 lock_sock(sk); 885 if (sk->sk_type != SOCK_SEQPACKET) { 886 err = -EOPNOTSUPP; 887 goto out_release; 888 } 889 890 if (sk->sk_state != TCP_LISTEN) { 891 err = -EINVAL; 892 goto out_release; 893 } 894 895 /* 896 * The write queue this time is holding sockets ready to use 897 * hooked into the SABM we saved 898 */ 899 for (;;) { 900 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); 901 902 skb = skb_dequeue(&sk->sk_receive_queue); 903 if (skb) 904 break; 905 906 if (flags & O_NONBLOCK) { 907 err = -EWOULDBLOCK; 908 break; 909 } 910 if (!signal_pending(current)) { 911 release_sock(sk); 912 schedule(); 913 lock_sock(sk); 914 continue; 915 } 916 err = -ERESTARTSYS; 917 break; 918 } 919 finish_wait(sk_sleep(sk), &wait); 920 if (err) 921 goto out_release; 922 923 newsk = skb->sk; 924 sock_graft(newsk, newsock); 925 926 /* Now attach up the new socket */ 927 skb->sk = NULL; 928 kfree_skb(skb); 929 sk_acceptq_removed(sk); 930 931 out_release: 932 release_sock(sk); 933 934 return err; 935 } 936 937 static int rose_getname(struct socket *sock, struct sockaddr *uaddr, 938 int peer) 939 { 940 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; 941 struct sock *sk = sock->sk; 942 struct rose_sock *rose = rose_sk(sk); 943 int n; 944 945 memset(srose, 0, sizeof(*srose)); 946 if (peer != 0) { 947 if (sk->sk_state != TCP_ESTABLISHED) 948 return -ENOTCONN; 949 srose->srose_family = AF_ROSE; 950 srose->srose_addr = rose->dest_addr; 951 srose->srose_call = rose->dest_call; 952 srose->srose_ndigis = rose->dest_ndigis; 953 for (n = 0; n < rose->dest_ndigis; n++) 954 srose->srose_digis[n] = rose->dest_digis[n]; 955 } else { 956 srose->srose_family = AF_ROSE; 957 srose->srose_addr = rose->source_addr; 958 srose->srose_call = rose->source_call; 959 srose->srose_ndigis = rose->source_ndigis; 960 for (n = 0; n < rose->source_ndigis; n++) 961 srose->srose_digis[n] = rose->source_digis[n]; 962 } 963 964 return sizeof(struct full_sockaddr_rose); 965 } 966 967 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) 968 { 969 struct sock *sk; 970 struct sock *make; 971 struct rose_sock *make_rose; 972 struct rose_facilities_struct facilities; 973 int n; 974 975 skb->sk = NULL; /* Initially we don't know who it's for */ 976 977 /* 978 * skb->data points to the rose frame start 979 */ 980 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); 981 982 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF, 983 skb->len - ROSE_CALL_REQ_FACILITIES_OFF, 984 &facilities)) { 985 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); 986 return 0; 987 } 988 989 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); 990 991 /* 992 * We can't accept the Call Request. 993 */ 994 if (sk == NULL || sk_acceptq_is_full(sk) || 995 (make = rose_make_new(sk)) == NULL) { 996 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); 997 return 0; 998 } 999 1000 skb->sk = make; 1001 make->sk_state = TCP_ESTABLISHED; 1002 make_rose = rose_sk(make); 1003 1004 make_rose->lci = lci; 1005 make_rose->dest_addr = facilities.dest_addr; 1006 make_rose->dest_call = facilities.dest_call; 1007 make_rose->dest_ndigis = facilities.dest_ndigis; 1008 for (n = 0 ; n < facilities.dest_ndigis ; n++) 1009 make_rose->dest_digis[n] = facilities.dest_digis[n]; 1010 make_rose->source_addr = facilities.source_addr; 1011 make_rose->source_call = facilities.source_call; 1012 make_rose->source_ndigis = facilities.source_ndigis; 1013 for (n = 0 ; n < facilities.source_ndigis ; n++) 1014 make_rose->source_digis[n] = facilities.source_digis[n]; 1015 make_rose->neighbour = neigh; 1016 make_rose->device = dev; 1017 make_rose->facilities = facilities; 1018 1019 make_rose->neighbour->use++; 1020 1021 if (rose_sk(sk)->defer) { 1022 make_rose->state = ROSE_STATE_5; 1023 } else { 1024 rose_write_internal(make, ROSE_CALL_ACCEPTED); 1025 make_rose->state = ROSE_STATE_3; 1026 rose_start_idletimer(make); 1027 } 1028 1029 make_rose->condition = 0x00; 1030 make_rose->vs = 0; 1031 make_rose->va = 0; 1032 make_rose->vr = 0; 1033 make_rose->vl = 0; 1034 sk_acceptq_added(sk); 1035 1036 rose_insert_socket(make); 1037 1038 skb_queue_head(&sk->sk_receive_queue, skb); 1039 1040 rose_start_heartbeat(make); 1041 1042 if (!sock_flag(sk, SOCK_DEAD)) 1043 sk->sk_data_ready(sk); 1044 1045 return 1; 1046 } 1047 1048 static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) 1049 { 1050 struct sock *sk = sock->sk; 1051 struct rose_sock *rose = rose_sk(sk); 1052 DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name); 1053 int err; 1054 struct full_sockaddr_rose srose; 1055 struct sk_buff *skb; 1056 unsigned char *asmptr; 1057 int n, size, qbit = 0; 1058 1059 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) 1060 return -EINVAL; 1061 1062 if (sock_flag(sk, SOCK_ZAPPED)) 1063 return -EADDRNOTAVAIL; 1064 1065 if (sk->sk_shutdown & SEND_SHUTDOWN) { 1066 send_sig(SIGPIPE, current, 0); 1067 return -EPIPE; 1068 } 1069 1070 if (rose->neighbour == NULL || rose->device == NULL) 1071 return -ENETUNREACH; 1072 1073 if (usrose != NULL) { 1074 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) 1075 return -EINVAL; 1076 memset(&srose, 0, sizeof(struct full_sockaddr_rose)); 1077 memcpy(&srose, usrose, msg->msg_namelen); 1078 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || 1079 ax25cmp(&rose->dest_call, &srose.srose_call) != 0) 1080 return -EISCONN; 1081 if (srose.srose_ndigis != rose->dest_ndigis) 1082 return -EISCONN; 1083 if (srose.srose_ndigis == rose->dest_ndigis) { 1084 for (n = 0 ; n < srose.srose_ndigis ; n++) 1085 if (ax25cmp(&rose->dest_digis[n], 1086 &srose.srose_digis[n])) 1087 return -EISCONN; 1088 } 1089 if (srose.srose_family != AF_ROSE) 1090 return -EINVAL; 1091 } else { 1092 if (sk->sk_state != TCP_ESTABLISHED) 1093 return -ENOTCONN; 1094 1095 srose.srose_family = AF_ROSE; 1096 srose.srose_addr = rose->dest_addr; 1097 srose.srose_call = rose->dest_call; 1098 srose.srose_ndigis = rose->dest_ndigis; 1099 for (n = 0 ; n < rose->dest_ndigis ; n++) 1100 srose.srose_digis[n] = rose->dest_digis[n]; 1101 } 1102 1103 /* Build a packet */ 1104 /* Sanity check the packet size */ 1105 if (len > 65535) 1106 return -EMSGSIZE; 1107 1108 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; 1109 1110 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) 1111 return err; 1112 1113 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); 1114 1115 /* 1116 * Put the data on the end 1117 */ 1118 1119 skb_reset_transport_header(skb); 1120 skb_put(skb, len); 1121 1122 err = memcpy_from_msg(skb_transport_header(skb), msg, len); 1123 if (err) { 1124 kfree_skb(skb); 1125 return err; 1126 } 1127 1128 /* 1129 * If the Q BIT Include socket option is in force, the first 1130 * byte of the user data is the logical value of the Q Bit. 1131 */ 1132 if (rose->qbitincl) { 1133 qbit = skb->data[0]; 1134 skb_pull(skb, 1); 1135 } 1136 1137 /* 1138 * Push down the ROSE header 1139 */ 1140 asmptr = skb_push(skb, ROSE_MIN_LEN); 1141 1142 /* Build a ROSE Network header */ 1143 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; 1144 asmptr[1] = (rose->lci >> 0) & 0xFF; 1145 asmptr[2] = ROSE_DATA; 1146 1147 if (qbit) 1148 asmptr[0] |= ROSE_Q_BIT; 1149 1150 if (sk->sk_state != TCP_ESTABLISHED) { 1151 kfree_skb(skb); 1152 return -ENOTCONN; 1153 } 1154 1155 #ifdef M_BIT 1156 #define ROSE_PACLEN (256-ROSE_MIN_LEN) 1157 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { 1158 unsigned char header[ROSE_MIN_LEN]; 1159 struct sk_buff *skbn; 1160 int frontlen; 1161 int lg; 1162 1163 /* Save a copy of the Header */ 1164 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); 1165 skb_pull(skb, ROSE_MIN_LEN); 1166 1167 frontlen = skb_headroom(skb); 1168 1169 while (skb->len > 0) { 1170 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { 1171 kfree_skb(skb); 1172 return err; 1173 } 1174 1175 skbn->sk = sk; 1176 skbn->free = 1; 1177 skbn->arp = 1; 1178 1179 skb_reserve(skbn, frontlen); 1180 1181 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; 1182 1183 /* Copy the user data */ 1184 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); 1185 skb_pull(skb, lg); 1186 1187 /* Duplicate the Header */ 1188 skb_push(skbn, ROSE_MIN_LEN); 1189 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); 1190 1191 if (skb->len > 0) 1192 skbn->data[2] |= M_BIT; 1193 1194 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ 1195 } 1196 1197 skb->free = 1; 1198 kfree_skb(skb); 1199 } else { 1200 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ 1201 } 1202 #else 1203 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ 1204 #endif 1205 1206 rose_kick(sk); 1207 1208 return len; 1209 } 1210 1211 1212 static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, 1213 int flags) 1214 { 1215 struct sock *sk = sock->sk; 1216 struct rose_sock *rose = rose_sk(sk); 1217 size_t copied; 1218 unsigned char *asmptr; 1219 struct sk_buff *skb; 1220 int n, er, qbit; 1221 1222 /* 1223 * This works for seqpacket too. The receiver has ordered the queue for 1224 * us! We do one quick check first though 1225 */ 1226 if (sk->sk_state != TCP_ESTABLISHED) 1227 return -ENOTCONN; 1228 1229 /* Now we can treat all alike */ 1230 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) 1231 return er; 1232 1233 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; 1234 1235 skb_pull(skb, ROSE_MIN_LEN); 1236 1237 if (rose->qbitincl) { 1238 asmptr = skb_push(skb, 1); 1239 *asmptr = qbit; 1240 } 1241 1242 skb_reset_transport_header(skb); 1243 copied = skb->len; 1244 1245 if (copied > size) { 1246 copied = size; 1247 msg->msg_flags |= MSG_TRUNC; 1248 } 1249 1250 skb_copy_datagram_msg(skb, 0, msg, copied); 1251 1252 if (msg->msg_name) { 1253 struct sockaddr_rose *srose; 1254 DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose, 1255 msg->msg_name); 1256 1257 memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose)); 1258 srose = msg->msg_name; 1259 srose->srose_family = AF_ROSE; 1260 srose->srose_addr = rose->dest_addr; 1261 srose->srose_call = rose->dest_call; 1262 srose->srose_ndigis = rose->dest_ndigis; 1263 for (n = 0 ; n < rose->dest_ndigis ; n++) 1264 full_srose->srose_digis[n] = rose->dest_digis[n]; 1265 msg->msg_namelen = sizeof(struct full_sockaddr_rose); 1266 } 1267 1268 skb_free_datagram(sk, skb); 1269 1270 return copied; 1271 } 1272 1273 1274 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 1275 { 1276 struct sock *sk = sock->sk; 1277 struct rose_sock *rose = rose_sk(sk); 1278 void __user *argp = (void __user *)arg; 1279 1280 switch (cmd) { 1281 case TIOCOUTQ: { 1282 long amount; 1283 1284 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); 1285 if (amount < 0) 1286 amount = 0; 1287 return put_user(amount, (unsigned int __user *) argp); 1288 } 1289 1290 case TIOCINQ: { 1291 struct sk_buff *skb; 1292 long amount = 0L; 1293 /* These two are safe on a single CPU system as only user tasks fiddle here */ 1294 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) 1295 amount = skb->len; 1296 return put_user(amount, (unsigned int __user *) argp); 1297 } 1298 1299 case SIOCGIFADDR: 1300 case SIOCSIFADDR: 1301 case SIOCGIFDSTADDR: 1302 case SIOCSIFDSTADDR: 1303 case SIOCGIFBRDADDR: 1304 case SIOCSIFBRDADDR: 1305 case SIOCGIFNETMASK: 1306 case SIOCSIFNETMASK: 1307 case SIOCGIFMETRIC: 1308 case SIOCSIFMETRIC: 1309 return -EINVAL; 1310 1311 case SIOCADDRT: 1312 case SIOCDELRT: 1313 case SIOCRSCLRRT: 1314 if (!capable(CAP_NET_ADMIN)) 1315 return -EPERM; 1316 return rose_rt_ioctl(cmd, argp); 1317 1318 case SIOCRSGCAUSE: { 1319 struct rose_cause_struct rose_cause; 1320 rose_cause.cause = rose->cause; 1321 rose_cause.diagnostic = rose->diagnostic; 1322 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; 1323 } 1324 1325 case SIOCRSSCAUSE: { 1326 struct rose_cause_struct rose_cause; 1327 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) 1328 return -EFAULT; 1329 rose->cause = rose_cause.cause; 1330 rose->diagnostic = rose_cause.diagnostic; 1331 return 0; 1332 } 1333 1334 case SIOCRSSL2CALL: 1335 if (!capable(CAP_NET_ADMIN)) return -EPERM; 1336 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1337 ax25_listen_release(&rose_callsign, NULL); 1338 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) 1339 return -EFAULT; 1340 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1341 return ax25_listen_register(&rose_callsign, NULL); 1342 1343 return 0; 1344 1345 case SIOCRSGL2CALL: 1346 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; 1347 1348 case SIOCRSACCEPT: 1349 if (rose->state == ROSE_STATE_5) { 1350 rose_write_internal(sk, ROSE_CALL_ACCEPTED); 1351 rose_start_idletimer(sk); 1352 rose->condition = 0x00; 1353 rose->vs = 0; 1354 rose->va = 0; 1355 rose->vr = 0; 1356 rose->vl = 0; 1357 rose->state = ROSE_STATE_3; 1358 } 1359 return 0; 1360 1361 default: 1362 return -ENOIOCTLCMD; 1363 } 1364 1365 return 0; 1366 } 1367 1368 #ifdef CONFIG_PROC_FS 1369 static void *rose_info_start(struct seq_file *seq, loff_t *pos) 1370 __acquires(rose_list_lock) 1371 { 1372 spin_lock_bh(&rose_list_lock); 1373 return seq_hlist_start_head(&rose_list, *pos); 1374 } 1375 1376 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) 1377 { 1378 return seq_hlist_next(v, &rose_list, pos); 1379 } 1380 1381 static void rose_info_stop(struct seq_file *seq, void *v) 1382 __releases(rose_list_lock) 1383 { 1384 spin_unlock_bh(&rose_list_lock); 1385 } 1386 1387 static int rose_info_show(struct seq_file *seq, void *v) 1388 { 1389 char buf[11], rsbuf[11]; 1390 1391 if (v == SEQ_START_TOKEN) 1392 seq_puts(seq, 1393 "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"); 1394 1395 else { 1396 struct sock *s = sk_entry(v); 1397 struct rose_sock *rose = rose_sk(s); 1398 const char *devname, *callsign; 1399 const struct net_device *dev = rose->device; 1400 1401 if (!dev) 1402 devname = "???"; 1403 else 1404 devname = dev->name; 1405 1406 seq_printf(seq, "%-10s %-9s ", 1407 rose2asc(rsbuf, &rose->dest_addr), 1408 ax2asc(buf, &rose->dest_call)); 1409 1410 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) 1411 callsign = "??????-?"; 1412 else 1413 callsign = ax2asc(buf, &rose->source_call); 1414 1415 seq_printf(seq, 1416 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", 1417 rose2asc(rsbuf, &rose->source_addr), 1418 callsign, 1419 devname, 1420 rose->lci & 0x0FFF, 1421 (rose->neighbour) ? rose->neighbour->number : 0, 1422 rose->state, 1423 rose->vs, 1424 rose->vr, 1425 rose->va, 1426 ax25_display_timer(&rose->timer) / HZ, 1427 rose->t1 / HZ, 1428 rose->t2 / HZ, 1429 rose->t3 / HZ, 1430 rose->hb / HZ, 1431 ax25_display_timer(&rose->idletimer) / (60 * HZ), 1432 rose->idle / (60 * HZ), 1433 sk_wmem_alloc_get(s), 1434 sk_rmem_alloc_get(s), 1435 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); 1436 } 1437 1438 return 0; 1439 } 1440 1441 static const struct seq_operations rose_info_seqops = { 1442 .start = rose_info_start, 1443 .next = rose_info_next, 1444 .stop = rose_info_stop, 1445 .show = rose_info_show, 1446 }; 1447 #endif /* CONFIG_PROC_FS */ 1448 1449 static const struct net_proto_family rose_family_ops = { 1450 .family = PF_ROSE, 1451 .create = rose_create, 1452 .owner = THIS_MODULE, 1453 }; 1454 1455 static const struct proto_ops rose_proto_ops = { 1456 .family = PF_ROSE, 1457 .owner = THIS_MODULE, 1458 .release = rose_release, 1459 .bind = rose_bind, 1460 .connect = rose_connect, 1461 .socketpair = sock_no_socketpair, 1462 .accept = rose_accept, 1463 .getname = rose_getname, 1464 .poll = datagram_poll, 1465 .ioctl = rose_ioctl, 1466 .gettstamp = sock_gettstamp, 1467 .listen = rose_listen, 1468 .shutdown = sock_no_shutdown, 1469 .setsockopt = rose_setsockopt, 1470 .getsockopt = rose_getsockopt, 1471 .sendmsg = rose_sendmsg, 1472 .recvmsg = rose_recvmsg, 1473 .mmap = sock_no_mmap, 1474 .sendpage = sock_no_sendpage, 1475 }; 1476 1477 static struct notifier_block rose_dev_notifier = { 1478 .notifier_call = rose_device_event, 1479 }; 1480 1481 static struct net_device **dev_rose; 1482 1483 static struct ax25_protocol rose_pid = { 1484 .pid = AX25_P_ROSE, 1485 .func = rose_route_frame 1486 }; 1487 1488 static struct ax25_linkfail rose_linkfail_notifier = { 1489 .func = rose_link_failed 1490 }; 1491 1492 static int __init rose_proto_init(void) 1493 { 1494 int i; 1495 int rc; 1496 1497 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { 1498 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter too large\n"); 1499 rc = -EINVAL; 1500 goto out; 1501 } 1502 1503 rc = proto_register(&rose_proto, 0); 1504 if (rc != 0) 1505 goto out; 1506 1507 rose_callsign = null_ax25_address; 1508 1509 dev_rose = kcalloc(rose_ndevs, sizeof(struct net_device *), 1510 GFP_KERNEL); 1511 if (dev_rose == NULL) { 1512 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); 1513 rc = -ENOMEM; 1514 goto out_proto_unregister; 1515 } 1516 1517 for (i = 0; i < rose_ndevs; i++) { 1518 struct net_device *dev; 1519 char name[IFNAMSIZ]; 1520 1521 sprintf(name, "rose%d", i); 1522 dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup); 1523 if (!dev) { 1524 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); 1525 rc = -ENOMEM; 1526 goto fail; 1527 } 1528 rc = register_netdev(dev); 1529 if (rc) { 1530 printk(KERN_ERR "ROSE: netdevice registration failed\n"); 1531 free_netdev(dev); 1532 goto fail; 1533 } 1534 rose_set_lockdep_key(dev); 1535 dev_rose[i] = dev; 1536 } 1537 1538 sock_register(&rose_family_ops); 1539 register_netdevice_notifier(&rose_dev_notifier); 1540 1541 ax25_register_pid(&rose_pid); 1542 ax25_linkfail_register(&rose_linkfail_notifier); 1543 1544 #ifdef CONFIG_SYSCTL 1545 rose_register_sysctl(); 1546 #endif 1547 rose_loopback_init(); 1548 1549 rose_add_loopback_neigh(); 1550 1551 proc_create_seq("rose", 0444, init_net.proc_net, &rose_info_seqops); 1552 proc_create_seq("rose_neigh", 0444, init_net.proc_net, 1553 &rose_neigh_seqops); 1554 proc_create_seq("rose_nodes", 0444, init_net.proc_net, 1555 &rose_node_seqops); 1556 proc_create_seq("rose_routes", 0444, init_net.proc_net, 1557 &rose_route_seqops); 1558 out: 1559 return rc; 1560 fail: 1561 while (--i >= 0) { 1562 unregister_netdev(dev_rose[i]); 1563 free_netdev(dev_rose[i]); 1564 } 1565 kfree(dev_rose); 1566 out_proto_unregister: 1567 proto_unregister(&rose_proto); 1568 goto out; 1569 } 1570 module_init(rose_proto_init); 1571 1572 module_param(rose_ndevs, int, 0); 1573 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); 1574 1575 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); 1576 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); 1577 MODULE_LICENSE("GPL"); 1578 MODULE_ALIAS_NETPROTO(PF_ROSE); 1579 1580 static void __exit rose_exit(void) 1581 { 1582 int i; 1583 1584 remove_proc_entry("rose", init_net.proc_net); 1585 remove_proc_entry("rose_neigh", init_net.proc_net); 1586 remove_proc_entry("rose_nodes", init_net.proc_net); 1587 remove_proc_entry("rose_routes", init_net.proc_net); 1588 rose_loopback_clear(); 1589 1590 rose_rt_free(); 1591 1592 ax25_protocol_release(AX25_P_ROSE); 1593 ax25_linkfail_release(&rose_linkfail_notifier); 1594 1595 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1596 ax25_listen_release(&rose_callsign, NULL); 1597 1598 #ifdef CONFIG_SYSCTL 1599 rose_unregister_sysctl(); 1600 #endif 1601 unregister_netdevice_notifier(&rose_dev_notifier); 1602 1603 sock_unregister(PF_ROSE); 1604 1605 for (i = 0; i < rose_ndevs; i++) { 1606 struct net_device *dev = dev_rose[i]; 1607 1608 if (dev) { 1609 unregister_netdev(dev); 1610 free_netdev(dev); 1611 } 1612 } 1613 1614 kfree(dev_rose); 1615 proto_unregister(&rose_proto); 1616 } 1617 1618 module_exit(rose_exit); 1619