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(rose_address *addr1, 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(rose_address *addr1, rose_address *addr2, unsigned short mask) 127 { 128 unsigned int i, j; 129 130 if (mask > 10) 131 return 1; 132 133 for (i = 0; i < mask; i++) { 134 j = i / 2; 135 136 if ((i % 2) != 0) { 137 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) 138 return 1; 139 } else { 140 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) 141 return 1; 142 } 143 } 144 145 return 0; 146 } 147 148 /* 149 * Socket removal during an interrupt is now safe. 150 */ 151 static void rose_remove_socket(struct sock *sk) 152 { 153 spin_lock_bh(&rose_list_lock); 154 sk_del_node_init(sk); 155 spin_unlock_bh(&rose_list_lock); 156 } 157 158 /* 159 * Kill all bound sockets on a broken link layer connection to a 160 * particular neighbour. 161 */ 162 void rose_kill_by_neigh(struct rose_neigh *neigh) 163 { 164 struct sock *s; 165 166 spin_lock_bh(&rose_list_lock); 167 sk_for_each(s, &rose_list) { 168 struct rose_sock *rose = rose_sk(s); 169 170 if (rose->neighbour == neigh) { 171 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 172 rose->neighbour->use--; 173 rose->neighbour = NULL; 174 } 175 } 176 spin_unlock_bh(&rose_list_lock); 177 } 178 179 /* 180 * Kill all bound sockets on a dropped device. 181 */ 182 static void rose_kill_by_device(struct net_device *dev) 183 { 184 struct sock *s; 185 186 spin_lock_bh(&rose_list_lock); 187 sk_for_each(s, &rose_list) { 188 struct rose_sock *rose = rose_sk(s); 189 190 if (rose->device == dev) { 191 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 192 if (rose->neighbour) 193 rose->neighbour->use--; 194 rose->device = NULL; 195 } 196 } 197 spin_unlock_bh(&rose_list_lock); 198 } 199 200 /* 201 * Handle device status changes. 202 */ 203 static int rose_device_event(struct notifier_block *this, 204 unsigned long event, void *ptr) 205 { 206 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 207 208 if (!net_eq(dev_net(dev), &init_net)) 209 return NOTIFY_DONE; 210 211 if (event != NETDEV_DOWN) 212 return NOTIFY_DONE; 213 214 switch (dev->type) { 215 case ARPHRD_ROSE: 216 rose_kill_by_device(dev); 217 break; 218 case ARPHRD_AX25: 219 rose_link_device_down(dev); 220 rose_rt_device_down(dev); 221 break; 222 } 223 224 return NOTIFY_DONE; 225 } 226 227 /* 228 * Add a socket to the bound sockets list. 229 */ 230 static void rose_insert_socket(struct sock *sk) 231 { 232 233 spin_lock_bh(&rose_list_lock); 234 sk_add_node(sk, &rose_list); 235 spin_unlock_bh(&rose_list_lock); 236 } 237 238 /* 239 * Find a socket that wants to accept the Call Request we just 240 * received. 241 */ 242 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) 243 { 244 struct sock *s; 245 246 spin_lock_bh(&rose_list_lock); 247 sk_for_each(s, &rose_list) { 248 struct rose_sock *rose = rose_sk(s); 249 250 if (!rosecmp(&rose->source_addr, addr) && 251 !ax25cmp(&rose->source_call, call) && 252 !rose->source_ndigis && s->sk_state == TCP_LISTEN) 253 goto found; 254 } 255 256 sk_for_each(s, &rose_list) { 257 struct rose_sock *rose = rose_sk(s); 258 259 if (!rosecmp(&rose->source_addr, addr) && 260 !ax25cmp(&rose->source_call, &null_ax25_address) && 261 s->sk_state == TCP_LISTEN) 262 goto found; 263 } 264 s = NULL; 265 found: 266 spin_unlock_bh(&rose_list_lock); 267 return s; 268 } 269 270 /* 271 * Find a connected ROSE socket given my LCI and device. 272 */ 273 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) 274 { 275 struct sock *s; 276 277 spin_lock_bh(&rose_list_lock); 278 sk_for_each(s, &rose_list) { 279 struct rose_sock *rose = rose_sk(s); 280 281 if (rose->lci == lci && rose->neighbour == neigh) 282 goto found; 283 } 284 s = NULL; 285 found: 286 spin_unlock_bh(&rose_list_lock); 287 return s; 288 } 289 290 /* 291 * Find a unique LCI for a given device. 292 */ 293 unsigned int rose_new_lci(struct rose_neigh *neigh) 294 { 295 int lci; 296 297 if (neigh->dce_mode) { 298 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) 299 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 300 return lci; 301 } else { 302 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) 303 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 304 return lci; 305 } 306 307 return 0; 308 } 309 310 /* 311 * Deferred destroy. 312 */ 313 void rose_destroy_socket(struct sock *); 314 315 /* 316 * Handler for deferred kills. 317 */ 318 static void rose_destroy_timer(struct timer_list *t) 319 { 320 struct sock *sk = from_timer(sk, t, sk_timer); 321 322 rose_destroy_socket(sk); 323 } 324 325 /* 326 * This is called from user mode and the timers. Thus it protects itself 327 * against interrupt users but doesn't worry about being called during 328 * work. Once it is removed from the queue no interrupt or bottom half 329 * will touch it and we are (fairly 8-) ) safe. 330 */ 331 void rose_destroy_socket(struct sock *sk) 332 { 333 struct sk_buff *skb; 334 335 rose_remove_socket(sk); 336 rose_stop_heartbeat(sk); 337 rose_stop_idletimer(sk); 338 rose_stop_timer(sk); 339 340 rose_clear_queues(sk); /* Flush the queues */ 341 342 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { 343 if (skb->sk != sk) { /* A pending connection */ 344 /* Queue the unaccepted socket for death */ 345 sock_set_flag(skb->sk, SOCK_DEAD); 346 rose_start_heartbeat(skb->sk); 347 rose_sk(skb->sk)->state = ROSE_STATE_0; 348 } 349 350 kfree_skb(skb); 351 } 352 353 if (sk_has_allocations(sk)) { 354 /* Defer: outstanding buffers */ 355 timer_setup(&sk->sk_timer, rose_destroy_timer, 0); 356 sk->sk_timer.expires = jiffies + 10 * HZ; 357 add_timer(&sk->sk_timer); 358 } else 359 sock_put(sk); 360 } 361 362 /* 363 * Handling for system calls applied via the various interfaces to a 364 * ROSE socket object. 365 */ 366 367 static int rose_setsockopt(struct socket *sock, int level, int optname, 368 char __user *optval, unsigned int optlen) 369 { 370 struct sock *sk = sock->sk; 371 struct rose_sock *rose = rose_sk(sk); 372 int opt; 373 374 if (level != SOL_ROSE) 375 return -ENOPROTOOPT; 376 377 if (optlen < sizeof(int)) 378 return -EINVAL; 379 380 if (get_user(opt, (int __user *)optval)) 381 return -EFAULT; 382 383 switch (optname) { 384 case ROSE_DEFER: 385 rose->defer = opt ? 1 : 0; 386 return 0; 387 388 case ROSE_T1: 389 if (opt < 1) 390 return -EINVAL; 391 rose->t1 = opt * HZ; 392 return 0; 393 394 case ROSE_T2: 395 if (opt < 1) 396 return -EINVAL; 397 rose->t2 = opt * HZ; 398 return 0; 399 400 case ROSE_T3: 401 if (opt < 1) 402 return -EINVAL; 403 rose->t3 = opt * HZ; 404 return 0; 405 406 case ROSE_HOLDBACK: 407 if (opt < 1) 408 return -EINVAL; 409 rose->hb = opt * HZ; 410 return 0; 411 412 case ROSE_IDLE: 413 if (opt < 0) 414 return -EINVAL; 415 rose->idle = opt * 60 * HZ; 416 return 0; 417 418 case ROSE_QBITINCL: 419 rose->qbitincl = opt ? 1 : 0; 420 return 0; 421 422 default: 423 return -ENOPROTOOPT; 424 } 425 } 426 427 static int rose_getsockopt(struct socket *sock, int level, int optname, 428 char __user *optval, int __user *optlen) 429 { 430 struct sock *sk = sock->sk; 431 struct rose_sock *rose = rose_sk(sk); 432 int val = 0; 433 int len; 434 435 if (level != SOL_ROSE) 436 return -ENOPROTOOPT; 437 438 if (get_user(len, optlen)) 439 return -EFAULT; 440 441 if (len < 0) 442 return -EINVAL; 443 444 switch (optname) { 445 case ROSE_DEFER: 446 val = rose->defer; 447 break; 448 449 case ROSE_T1: 450 val = rose->t1 / HZ; 451 break; 452 453 case ROSE_T2: 454 val = rose->t2 / HZ; 455 break; 456 457 case ROSE_T3: 458 val = rose->t3 / HZ; 459 break; 460 461 case ROSE_HOLDBACK: 462 val = rose->hb / HZ; 463 break; 464 465 case ROSE_IDLE: 466 val = rose->idle / (60 * HZ); 467 break; 468 469 case ROSE_QBITINCL: 470 val = rose->qbitincl; 471 break; 472 473 default: 474 return -ENOPROTOOPT; 475 } 476 477 len = min_t(unsigned int, len, sizeof(int)); 478 479 if (put_user(len, optlen)) 480 return -EFAULT; 481 482 return copy_to_user(optval, &val, len) ? -EFAULT : 0; 483 } 484 485 static int rose_listen(struct socket *sock, int backlog) 486 { 487 struct sock *sk = sock->sk; 488 489 if (sk->sk_state != TCP_LISTEN) { 490 struct rose_sock *rose = rose_sk(sk); 491 492 rose->dest_ndigis = 0; 493 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); 494 memset(&rose->dest_call, 0, AX25_ADDR_LEN); 495 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); 496 sk->sk_max_ack_backlog = backlog; 497 sk->sk_state = TCP_LISTEN; 498 return 0; 499 } 500 501 return -EOPNOTSUPP; 502 } 503 504 static struct proto rose_proto = { 505 .name = "ROSE", 506 .owner = THIS_MODULE, 507 .obj_size = sizeof(struct rose_sock), 508 }; 509 510 static int rose_create(struct net *net, struct socket *sock, int protocol, 511 int kern) 512 { 513 struct sock *sk; 514 struct rose_sock *rose; 515 516 if (!net_eq(net, &init_net)) 517 return -EAFNOSUPPORT; 518 519 if (sock->type != SOCK_SEQPACKET || protocol != 0) 520 return -ESOCKTNOSUPPORT; 521 522 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto, kern); 523 if (sk == NULL) 524 return -ENOMEM; 525 526 rose = rose_sk(sk); 527 528 sock_init_data(sock, sk); 529 530 skb_queue_head_init(&rose->ack_queue); 531 #ifdef M_BIT 532 skb_queue_head_init(&rose->frag_queue); 533 rose->fraglen = 0; 534 #endif 535 536 sock->ops = &rose_proto_ops; 537 sk->sk_protocol = protocol; 538 539 timer_setup(&rose->timer, NULL, 0); 540 timer_setup(&rose->idletimer, NULL, 0); 541 542 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); 543 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); 544 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); 545 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); 546 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); 547 548 rose->state = ROSE_STATE_0; 549 550 return 0; 551 } 552 553 static struct sock *rose_make_new(struct sock *osk) 554 { 555 struct sock *sk; 556 struct rose_sock *rose, *orose; 557 558 if (osk->sk_type != SOCK_SEQPACKET) 559 return NULL; 560 561 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto, 0); 562 if (sk == NULL) 563 return NULL; 564 565 rose = rose_sk(sk); 566 567 sock_init_data(NULL, sk); 568 569 skb_queue_head_init(&rose->ack_queue); 570 #ifdef M_BIT 571 skb_queue_head_init(&rose->frag_queue); 572 rose->fraglen = 0; 573 #endif 574 575 sk->sk_type = osk->sk_type; 576 sk->sk_priority = osk->sk_priority; 577 sk->sk_protocol = osk->sk_protocol; 578 sk->sk_rcvbuf = osk->sk_rcvbuf; 579 sk->sk_sndbuf = osk->sk_sndbuf; 580 sk->sk_state = TCP_ESTABLISHED; 581 sock_copy_flags(sk, osk); 582 583 timer_setup(&rose->timer, NULL, 0); 584 timer_setup(&rose->idletimer, NULL, 0); 585 586 orose = rose_sk(osk); 587 rose->t1 = orose->t1; 588 rose->t2 = orose->t2; 589 rose->t3 = orose->t3; 590 rose->hb = orose->hb; 591 rose->idle = orose->idle; 592 rose->defer = orose->defer; 593 rose->device = orose->device; 594 rose->qbitincl = orose->qbitincl; 595 596 return sk; 597 } 598 599 static int rose_release(struct socket *sock) 600 { 601 struct sock *sk = sock->sk; 602 struct rose_sock *rose; 603 604 if (sk == NULL) return 0; 605 606 sock_hold(sk); 607 sock_orphan(sk); 608 lock_sock(sk); 609 rose = rose_sk(sk); 610 611 switch (rose->state) { 612 case ROSE_STATE_0: 613 release_sock(sk); 614 rose_disconnect(sk, 0, -1, -1); 615 lock_sock(sk); 616 rose_destroy_socket(sk); 617 break; 618 619 case ROSE_STATE_2: 620 rose->neighbour->use--; 621 release_sock(sk); 622 rose_disconnect(sk, 0, -1, -1); 623 lock_sock(sk); 624 rose_destroy_socket(sk); 625 break; 626 627 case ROSE_STATE_1: 628 case ROSE_STATE_3: 629 case ROSE_STATE_4: 630 case ROSE_STATE_5: 631 rose_clear_queues(sk); 632 rose_stop_idletimer(sk); 633 rose_write_internal(sk, ROSE_CLEAR_REQUEST); 634 rose_start_t3timer(sk); 635 rose->state = ROSE_STATE_2; 636 sk->sk_state = TCP_CLOSE; 637 sk->sk_shutdown |= SEND_SHUTDOWN; 638 sk->sk_state_change(sk); 639 sock_set_flag(sk, SOCK_DEAD); 640 sock_set_flag(sk, SOCK_DESTROY); 641 break; 642 643 default: 644 break; 645 } 646 647 sock->sk = NULL; 648 release_sock(sk); 649 sock_put(sk); 650 651 return 0; 652 } 653 654 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) 655 { 656 struct sock *sk = sock->sk; 657 struct rose_sock *rose = rose_sk(sk); 658 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 659 struct net_device *dev; 660 ax25_address *source; 661 ax25_uid_assoc *user; 662 int n; 663 664 if (!sock_flag(sk, SOCK_ZAPPED)) 665 return -EINVAL; 666 667 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 668 return -EINVAL; 669 670 if (addr->srose_family != AF_ROSE) 671 return -EINVAL; 672 673 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 674 return -EINVAL; 675 676 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 677 return -EINVAL; 678 679 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) 680 return -EADDRNOTAVAIL; 681 682 source = &addr->srose_call; 683 684 user = ax25_findbyuid(current_euid()); 685 if (user) { 686 rose->source_call = user->call; 687 ax25_uid_put(user); 688 } else { 689 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) { 690 dev_put(dev); 691 return -EACCES; 692 } 693 rose->source_call = *source; 694 } 695 696 rose->source_addr = addr->srose_addr; 697 rose->device = dev; 698 rose->source_ndigis = addr->srose_ndigis; 699 700 if (addr_len == sizeof(struct full_sockaddr_rose)) { 701 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 702 for (n = 0 ; n < addr->srose_ndigis ; n++) 703 rose->source_digis[n] = full_addr->srose_digis[n]; 704 } else { 705 if (rose->source_ndigis == 1) { 706 rose->source_digis[0] = addr->srose_digi; 707 } 708 } 709 710 rose_insert_socket(sk); 711 712 sock_reset_flag(sk, SOCK_ZAPPED); 713 714 return 0; 715 } 716 717 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) 718 { 719 struct sock *sk = sock->sk; 720 struct rose_sock *rose = rose_sk(sk); 721 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 722 unsigned char cause, diagnostic; 723 struct net_device *dev; 724 ax25_uid_assoc *user; 725 int n, err = 0; 726 727 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 728 return -EINVAL; 729 730 if (addr->srose_family != AF_ROSE) 731 return -EINVAL; 732 733 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 734 return -EINVAL; 735 736 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) 737 return -EINVAL; 738 739 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ 740 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) 741 return -EINVAL; 742 743 lock_sock(sk); 744 745 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { 746 /* Connect completed during a ERESTARTSYS event */ 747 sock->state = SS_CONNECTED; 748 goto out_release; 749 } 750 751 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { 752 sock->state = SS_UNCONNECTED; 753 err = -ECONNREFUSED; 754 goto out_release; 755 } 756 757 if (sk->sk_state == TCP_ESTABLISHED) { 758 /* No reconnect on a seqpacket socket */ 759 err = -EISCONN; 760 goto out_release; 761 } 762 763 sk->sk_state = TCP_CLOSE; 764 sock->state = SS_UNCONNECTED; 765 766 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, 767 &diagnostic, 0); 768 if (!rose->neighbour) { 769 err = -ENETUNREACH; 770 goto out_release; 771 } 772 773 rose->lci = rose_new_lci(rose->neighbour); 774 if (!rose->lci) { 775 err = -ENETUNREACH; 776 goto out_release; 777 } 778 779 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ 780 sock_reset_flag(sk, SOCK_ZAPPED); 781 782 if ((dev = rose_dev_first()) == NULL) { 783 err = -ENETUNREACH; 784 goto out_release; 785 } 786 787 user = ax25_findbyuid(current_euid()); 788 if (!user) { 789 err = -EINVAL; 790 goto out_release; 791 } 792 793 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); 794 rose->source_call = user->call; 795 rose->device = dev; 796 ax25_uid_put(user); 797 798 rose_insert_socket(sk); /* Finish the bind */ 799 } 800 rose->dest_addr = addr->srose_addr; 801 rose->dest_call = addr->srose_call; 802 rose->rand = ((long)rose & 0xFFFF) + rose->lci; 803 rose->dest_ndigis = addr->srose_ndigis; 804 805 if (addr_len == sizeof(struct full_sockaddr_rose)) { 806 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 807 for (n = 0 ; n < addr->srose_ndigis ; n++) 808 rose->dest_digis[n] = full_addr->srose_digis[n]; 809 } else { 810 if (rose->dest_ndigis == 1) { 811 rose->dest_digis[0] = addr->srose_digi; 812 } 813 } 814 815 /* Move to connecting socket, start sending Connect Requests */ 816 sock->state = SS_CONNECTING; 817 sk->sk_state = TCP_SYN_SENT; 818 819 rose->state = ROSE_STATE_1; 820 821 rose->neighbour->use++; 822 823 rose_write_internal(sk, ROSE_CALL_REQUEST); 824 rose_start_heartbeat(sk); 825 rose_start_t1timer(sk); 826 827 /* Now the loop */ 828 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) { 829 err = -EINPROGRESS; 830 goto out_release; 831 } 832 833 /* 834 * A Connect Ack with Choke or timeout or failed routing will go to 835 * closed. 836 */ 837 if (sk->sk_state == TCP_SYN_SENT) { 838 DEFINE_WAIT(wait); 839 840 for (;;) { 841 prepare_to_wait(sk_sleep(sk), &wait, 842 TASK_INTERRUPTIBLE); 843 if (sk->sk_state != TCP_SYN_SENT) 844 break; 845 if (!signal_pending(current)) { 846 release_sock(sk); 847 schedule(); 848 lock_sock(sk); 849 continue; 850 } 851 err = -ERESTARTSYS; 852 break; 853 } 854 finish_wait(sk_sleep(sk), &wait); 855 856 if (err) 857 goto out_release; 858 } 859 860 if (sk->sk_state != TCP_ESTABLISHED) { 861 sock->state = SS_UNCONNECTED; 862 err = sock_error(sk); /* Always set at this point */ 863 goto out_release; 864 } 865 866 sock->state = SS_CONNECTED; 867 868 out_release: 869 release_sock(sk); 870 871 return err; 872 } 873 874 static int rose_accept(struct socket *sock, struct socket *newsock, int flags, 875 bool kern) 876 { 877 struct sk_buff *skb; 878 struct sock *newsk; 879 DEFINE_WAIT(wait); 880 struct sock *sk; 881 int err = 0; 882 883 if ((sk = sock->sk) == NULL) 884 return -EINVAL; 885 886 lock_sock(sk); 887 if (sk->sk_type != SOCK_SEQPACKET) { 888 err = -EOPNOTSUPP; 889 goto out_release; 890 } 891 892 if (sk->sk_state != TCP_LISTEN) { 893 err = -EINVAL; 894 goto out_release; 895 } 896 897 /* 898 * The write queue this time is holding sockets ready to use 899 * hooked into the SABM we saved 900 */ 901 for (;;) { 902 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); 903 904 skb = skb_dequeue(&sk->sk_receive_queue); 905 if (skb) 906 break; 907 908 if (flags & O_NONBLOCK) { 909 err = -EWOULDBLOCK; 910 break; 911 } 912 if (!signal_pending(current)) { 913 release_sock(sk); 914 schedule(); 915 lock_sock(sk); 916 continue; 917 } 918 err = -ERESTARTSYS; 919 break; 920 } 921 finish_wait(sk_sleep(sk), &wait); 922 if (err) 923 goto out_release; 924 925 newsk = skb->sk; 926 sock_graft(newsk, newsock); 927 928 /* Now attach up the new socket */ 929 skb->sk = NULL; 930 kfree_skb(skb); 931 sk_acceptq_removed(sk); 932 933 out_release: 934 release_sock(sk); 935 936 return err; 937 } 938 939 static int rose_getname(struct socket *sock, struct sockaddr *uaddr, 940 int peer) 941 { 942 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; 943 struct sock *sk = sock->sk; 944 struct rose_sock *rose = rose_sk(sk); 945 int n; 946 947 memset(srose, 0, sizeof(*srose)); 948 if (peer != 0) { 949 if (sk->sk_state != TCP_ESTABLISHED) 950 return -ENOTCONN; 951 srose->srose_family = AF_ROSE; 952 srose->srose_addr = rose->dest_addr; 953 srose->srose_call = rose->dest_call; 954 srose->srose_ndigis = rose->dest_ndigis; 955 for (n = 0; n < rose->dest_ndigis; n++) 956 srose->srose_digis[n] = rose->dest_digis[n]; 957 } else { 958 srose->srose_family = AF_ROSE; 959 srose->srose_addr = rose->source_addr; 960 srose->srose_call = rose->source_call; 961 srose->srose_ndigis = rose->source_ndigis; 962 for (n = 0; n < rose->source_ndigis; n++) 963 srose->srose_digis[n] = rose->source_digis[n]; 964 } 965 966 return sizeof(struct full_sockaddr_rose); 967 } 968 969 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) 970 { 971 struct sock *sk; 972 struct sock *make; 973 struct rose_sock *make_rose; 974 struct rose_facilities_struct facilities; 975 int n; 976 977 skb->sk = NULL; /* Initially we don't know who it's for */ 978 979 /* 980 * skb->data points to the rose frame start 981 */ 982 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); 983 984 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF, 985 skb->len - ROSE_CALL_REQ_FACILITIES_OFF, 986 &facilities)) { 987 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); 988 return 0; 989 } 990 991 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); 992 993 /* 994 * We can't accept the Call Request. 995 */ 996 if (sk == NULL || sk_acceptq_is_full(sk) || 997 (make = rose_make_new(sk)) == NULL) { 998 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); 999 return 0; 1000 } 1001 1002 skb->sk = make; 1003 make->sk_state = TCP_ESTABLISHED; 1004 make_rose = rose_sk(make); 1005 1006 make_rose->lci = lci; 1007 make_rose->dest_addr = facilities.dest_addr; 1008 make_rose->dest_call = facilities.dest_call; 1009 make_rose->dest_ndigis = facilities.dest_ndigis; 1010 for (n = 0 ; n < facilities.dest_ndigis ; n++) 1011 make_rose->dest_digis[n] = facilities.dest_digis[n]; 1012 make_rose->source_addr = facilities.source_addr; 1013 make_rose->source_call = facilities.source_call; 1014 make_rose->source_ndigis = facilities.source_ndigis; 1015 for (n = 0 ; n < facilities.source_ndigis ; n++) 1016 make_rose->source_digis[n] = facilities.source_digis[n]; 1017 make_rose->neighbour = neigh; 1018 make_rose->device = dev; 1019 make_rose->facilities = facilities; 1020 1021 make_rose->neighbour->use++; 1022 1023 if (rose_sk(sk)->defer) { 1024 make_rose->state = ROSE_STATE_5; 1025 } else { 1026 rose_write_internal(make, ROSE_CALL_ACCEPTED); 1027 make_rose->state = ROSE_STATE_3; 1028 rose_start_idletimer(make); 1029 } 1030 1031 make_rose->condition = 0x00; 1032 make_rose->vs = 0; 1033 make_rose->va = 0; 1034 make_rose->vr = 0; 1035 make_rose->vl = 0; 1036 sk_acceptq_added(sk); 1037 1038 rose_insert_socket(make); 1039 1040 skb_queue_head(&sk->sk_receive_queue, skb); 1041 1042 rose_start_heartbeat(make); 1043 1044 if (!sock_flag(sk, SOCK_DEAD)) 1045 sk->sk_data_ready(sk); 1046 1047 return 1; 1048 } 1049 1050 static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) 1051 { 1052 struct sock *sk = sock->sk; 1053 struct rose_sock *rose = rose_sk(sk); 1054 DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name); 1055 int err; 1056 struct full_sockaddr_rose srose; 1057 struct sk_buff *skb; 1058 unsigned char *asmptr; 1059 int n, size, qbit = 0; 1060 1061 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) 1062 return -EINVAL; 1063 1064 if (sock_flag(sk, SOCK_ZAPPED)) 1065 return -EADDRNOTAVAIL; 1066 1067 if (sk->sk_shutdown & SEND_SHUTDOWN) { 1068 send_sig(SIGPIPE, current, 0); 1069 return -EPIPE; 1070 } 1071 1072 if (rose->neighbour == NULL || rose->device == NULL) 1073 return -ENETUNREACH; 1074 1075 if (usrose != NULL) { 1076 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) 1077 return -EINVAL; 1078 memset(&srose, 0, sizeof(struct full_sockaddr_rose)); 1079 memcpy(&srose, usrose, msg->msg_namelen); 1080 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || 1081 ax25cmp(&rose->dest_call, &srose.srose_call) != 0) 1082 return -EISCONN; 1083 if (srose.srose_ndigis != rose->dest_ndigis) 1084 return -EISCONN; 1085 if (srose.srose_ndigis == rose->dest_ndigis) { 1086 for (n = 0 ; n < srose.srose_ndigis ; n++) 1087 if (ax25cmp(&rose->dest_digis[n], 1088 &srose.srose_digis[n])) 1089 return -EISCONN; 1090 } 1091 if (srose.srose_family != AF_ROSE) 1092 return -EINVAL; 1093 } else { 1094 if (sk->sk_state != TCP_ESTABLISHED) 1095 return -ENOTCONN; 1096 1097 srose.srose_family = AF_ROSE; 1098 srose.srose_addr = rose->dest_addr; 1099 srose.srose_call = rose->dest_call; 1100 srose.srose_ndigis = rose->dest_ndigis; 1101 for (n = 0 ; n < rose->dest_ndigis ; n++) 1102 srose.srose_digis[n] = rose->dest_digis[n]; 1103 } 1104 1105 /* Build a packet */ 1106 /* Sanity check the packet size */ 1107 if (len > 65535) 1108 return -EMSGSIZE; 1109 1110 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; 1111 1112 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) 1113 return err; 1114 1115 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); 1116 1117 /* 1118 * Put the data on the end 1119 */ 1120 1121 skb_reset_transport_header(skb); 1122 skb_put(skb, len); 1123 1124 err = memcpy_from_msg(skb_transport_header(skb), msg, len); 1125 if (err) { 1126 kfree_skb(skb); 1127 return err; 1128 } 1129 1130 /* 1131 * If the Q BIT Include socket option is in force, the first 1132 * byte of the user data is the logical value of the Q Bit. 1133 */ 1134 if (rose->qbitincl) { 1135 qbit = skb->data[0]; 1136 skb_pull(skb, 1); 1137 } 1138 1139 /* 1140 * Push down the ROSE header 1141 */ 1142 asmptr = skb_push(skb, ROSE_MIN_LEN); 1143 1144 /* Build a ROSE Network header */ 1145 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; 1146 asmptr[1] = (rose->lci >> 0) & 0xFF; 1147 asmptr[2] = ROSE_DATA; 1148 1149 if (qbit) 1150 asmptr[0] |= ROSE_Q_BIT; 1151 1152 if (sk->sk_state != TCP_ESTABLISHED) { 1153 kfree_skb(skb); 1154 return -ENOTCONN; 1155 } 1156 1157 #ifdef M_BIT 1158 #define ROSE_PACLEN (256-ROSE_MIN_LEN) 1159 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { 1160 unsigned char header[ROSE_MIN_LEN]; 1161 struct sk_buff *skbn; 1162 int frontlen; 1163 int lg; 1164 1165 /* Save a copy of the Header */ 1166 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); 1167 skb_pull(skb, ROSE_MIN_LEN); 1168 1169 frontlen = skb_headroom(skb); 1170 1171 while (skb->len > 0) { 1172 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { 1173 kfree_skb(skb); 1174 return err; 1175 } 1176 1177 skbn->sk = sk; 1178 skbn->free = 1; 1179 skbn->arp = 1; 1180 1181 skb_reserve(skbn, frontlen); 1182 1183 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; 1184 1185 /* Copy the user data */ 1186 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); 1187 skb_pull(skb, lg); 1188 1189 /* Duplicate the Header */ 1190 skb_push(skbn, ROSE_MIN_LEN); 1191 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); 1192 1193 if (skb->len > 0) 1194 skbn->data[2] |= M_BIT; 1195 1196 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ 1197 } 1198 1199 skb->free = 1; 1200 kfree_skb(skb); 1201 } else { 1202 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ 1203 } 1204 #else 1205 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ 1206 #endif 1207 1208 rose_kick(sk); 1209 1210 return len; 1211 } 1212 1213 1214 static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, 1215 int flags) 1216 { 1217 struct sock *sk = sock->sk; 1218 struct rose_sock *rose = rose_sk(sk); 1219 size_t copied; 1220 unsigned char *asmptr; 1221 struct sk_buff *skb; 1222 int n, er, qbit; 1223 1224 /* 1225 * This works for seqpacket too. The receiver has ordered the queue for 1226 * us! We do one quick check first though 1227 */ 1228 if (sk->sk_state != TCP_ESTABLISHED) 1229 return -ENOTCONN; 1230 1231 /* Now we can treat all alike */ 1232 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) 1233 return er; 1234 1235 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; 1236 1237 skb_pull(skb, ROSE_MIN_LEN); 1238 1239 if (rose->qbitincl) { 1240 asmptr = skb_push(skb, 1); 1241 *asmptr = qbit; 1242 } 1243 1244 skb_reset_transport_header(skb); 1245 copied = skb->len; 1246 1247 if (copied > size) { 1248 copied = size; 1249 msg->msg_flags |= MSG_TRUNC; 1250 } 1251 1252 skb_copy_datagram_msg(skb, 0, msg, copied); 1253 1254 if (msg->msg_name) { 1255 struct sockaddr_rose *srose; 1256 DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose, 1257 msg->msg_name); 1258 1259 memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose)); 1260 srose = msg->msg_name; 1261 srose->srose_family = AF_ROSE; 1262 srose->srose_addr = rose->dest_addr; 1263 srose->srose_call = rose->dest_call; 1264 srose->srose_ndigis = rose->dest_ndigis; 1265 for (n = 0 ; n < rose->dest_ndigis ; n++) 1266 full_srose->srose_digis[n] = rose->dest_digis[n]; 1267 msg->msg_namelen = sizeof(struct full_sockaddr_rose); 1268 } 1269 1270 skb_free_datagram(sk, skb); 1271 1272 return copied; 1273 } 1274 1275 1276 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 1277 { 1278 struct sock *sk = sock->sk; 1279 struct rose_sock *rose = rose_sk(sk); 1280 void __user *argp = (void __user *)arg; 1281 1282 switch (cmd) { 1283 case TIOCOUTQ: { 1284 long amount; 1285 1286 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); 1287 if (amount < 0) 1288 amount = 0; 1289 return put_user(amount, (unsigned int __user *) argp); 1290 } 1291 1292 case TIOCINQ: { 1293 struct sk_buff *skb; 1294 long amount = 0L; 1295 /* These two are safe on a single CPU system as only user tasks fiddle here */ 1296 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) 1297 amount = skb->len; 1298 return put_user(amount, (unsigned int __user *) argp); 1299 } 1300 1301 case SIOCGIFADDR: 1302 case SIOCSIFADDR: 1303 case SIOCGIFDSTADDR: 1304 case SIOCSIFDSTADDR: 1305 case SIOCGIFBRDADDR: 1306 case SIOCSIFBRDADDR: 1307 case SIOCGIFNETMASK: 1308 case SIOCSIFNETMASK: 1309 case SIOCGIFMETRIC: 1310 case SIOCSIFMETRIC: 1311 return -EINVAL; 1312 1313 case SIOCADDRT: 1314 case SIOCDELRT: 1315 case SIOCRSCLRRT: 1316 if (!capable(CAP_NET_ADMIN)) 1317 return -EPERM; 1318 return rose_rt_ioctl(cmd, argp); 1319 1320 case SIOCRSGCAUSE: { 1321 struct rose_cause_struct rose_cause; 1322 rose_cause.cause = rose->cause; 1323 rose_cause.diagnostic = rose->diagnostic; 1324 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; 1325 } 1326 1327 case SIOCRSSCAUSE: { 1328 struct rose_cause_struct rose_cause; 1329 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) 1330 return -EFAULT; 1331 rose->cause = rose_cause.cause; 1332 rose->diagnostic = rose_cause.diagnostic; 1333 return 0; 1334 } 1335 1336 case SIOCRSSL2CALL: 1337 if (!capable(CAP_NET_ADMIN)) return -EPERM; 1338 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1339 ax25_listen_release(&rose_callsign, NULL); 1340 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) 1341 return -EFAULT; 1342 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1343 return ax25_listen_register(&rose_callsign, NULL); 1344 1345 return 0; 1346 1347 case SIOCRSGL2CALL: 1348 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; 1349 1350 case SIOCRSACCEPT: 1351 if (rose->state == ROSE_STATE_5) { 1352 rose_write_internal(sk, ROSE_CALL_ACCEPTED); 1353 rose_start_idletimer(sk); 1354 rose->condition = 0x00; 1355 rose->vs = 0; 1356 rose->va = 0; 1357 rose->vr = 0; 1358 rose->vl = 0; 1359 rose->state = ROSE_STATE_3; 1360 } 1361 return 0; 1362 1363 default: 1364 return -ENOIOCTLCMD; 1365 } 1366 1367 return 0; 1368 } 1369 1370 #ifdef CONFIG_PROC_FS 1371 static void *rose_info_start(struct seq_file *seq, loff_t *pos) 1372 __acquires(rose_list_lock) 1373 { 1374 spin_lock_bh(&rose_list_lock); 1375 return seq_hlist_start_head(&rose_list, *pos); 1376 } 1377 1378 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) 1379 { 1380 return seq_hlist_next(v, &rose_list, pos); 1381 } 1382 1383 static void rose_info_stop(struct seq_file *seq, void *v) 1384 __releases(rose_list_lock) 1385 { 1386 spin_unlock_bh(&rose_list_lock); 1387 } 1388 1389 static int rose_info_show(struct seq_file *seq, void *v) 1390 { 1391 char buf[11], rsbuf[11]; 1392 1393 if (v == SEQ_START_TOKEN) 1394 seq_puts(seq, 1395 "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"); 1396 1397 else { 1398 struct sock *s = sk_entry(v); 1399 struct rose_sock *rose = rose_sk(s); 1400 const char *devname, *callsign; 1401 const struct net_device *dev = rose->device; 1402 1403 if (!dev) 1404 devname = "???"; 1405 else 1406 devname = dev->name; 1407 1408 seq_printf(seq, "%-10s %-9s ", 1409 rose2asc(rsbuf, &rose->dest_addr), 1410 ax2asc(buf, &rose->dest_call)); 1411 1412 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) 1413 callsign = "??????-?"; 1414 else 1415 callsign = ax2asc(buf, &rose->source_call); 1416 1417 seq_printf(seq, 1418 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", 1419 rose2asc(rsbuf, &rose->source_addr), 1420 callsign, 1421 devname, 1422 rose->lci & 0x0FFF, 1423 (rose->neighbour) ? rose->neighbour->number : 0, 1424 rose->state, 1425 rose->vs, 1426 rose->vr, 1427 rose->va, 1428 ax25_display_timer(&rose->timer) / HZ, 1429 rose->t1 / HZ, 1430 rose->t2 / HZ, 1431 rose->t3 / HZ, 1432 rose->hb / HZ, 1433 ax25_display_timer(&rose->idletimer) / (60 * HZ), 1434 rose->idle / (60 * HZ), 1435 sk_wmem_alloc_get(s), 1436 sk_rmem_alloc_get(s), 1437 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); 1438 } 1439 1440 return 0; 1441 } 1442 1443 static const struct seq_operations rose_info_seqops = { 1444 .start = rose_info_start, 1445 .next = rose_info_next, 1446 .stop = rose_info_stop, 1447 .show = rose_info_show, 1448 }; 1449 #endif /* CONFIG_PROC_FS */ 1450 1451 static const struct net_proto_family rose_family_ops = { 1452 .family = PF_ROSE, 1453 .create = rose_create, 1454 .owner = THIS_MODULE, 1455 }; 1456 1457 static const struct proto_ops rose_proto_ops = { 1458 .family = PF_ROSE, 1459 .owner = THIS_MODULE, 1460 .release = rose_release, 1461 .bind = rose_bind, 1462 .connect = rose_connect, 1463 .socketpair = sock_no_socketpair, 1464 .accept = rose_accept, 1465 .getname = rose_getname, 1466 .poll = datagram_poll, 1467 .ioctl = rose_ioctl, 1468 .gettstamp = sock_gettstamp, 1469 .listen = rose_listen, 1470 .shutdown = sock_no_shutdown, 1471 .setsockopt = rose_setsockopt, 1472 .getsockopt = rose_getsockopt, 1473 .sendmsg = rose_sendmsg, 1474 .recvmsg = rose_recvmsg, 1475 .mmap = sock_no_mmap, 1476 .sendpage = sock_no_sendpage, 1477 }; 1478 1479 static struct notifier_block rose_dev_notifier = { 1480 .notifier_call = rose_device_event, 1481 }; 1482 1483 static struct net_device **dev_rose; 1484 1485 static struct ax25_protocol rose_pid = { 1486 .pid = AX25_P_ROSE, 1487 .func = rose_route_frame 1488 }; 1489 1490 static struct ax25_linkfail rose_linkfail_notifier = { 1491 .func = rose_link_failed 1492 }; 1493 1494 static int __init rose_proto_init(void) 1495 { 1496 int i; 1497 int rc; 1498 1499 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { 1500 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter too large\n"); 1501 rc = -EINVAL; 1502 goto out; 1503 } 1504 1505 rc = proto_register(&rose_proto, 0); 1506 if (rc != 0) 1507 goto out; 1508 1509 rose_callsign = null_ax25_address; 1510 1511 dev_rose = kcalloc(rose_ndevs, sizeof(struct net_device *), 1512 GFP_KERNEL); 1513 if (dev_rose == NULL) { 1514 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); 1515 rc = -ENOMEM; 1516 goto out_proto_unregister; 1517 } 1518 1519 for (i = 0; i < rose_ndevs; i++) { 1520 struct net_device *dev; 1521 char name[IFNAMSIZ]; 1522 1523 sprintf(name, "rose%d", i); 1524 dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup); 1525 if (!dev) { 1526 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); 1527 rc = -ENOMEM; 1528 goto fail; 1529 } 1530 rc = register_netdev(dev); 1531 if (rc) { 1532 printk(KERN_ERR "ROSE: netdevice registration failed\n"); 1533 free_netdev(dev); 1534 goto fail; 1535 } 1536 rose_set_lockdep_key(dev); 1537 dev_rose[i] = dev; 1538 } 1539 1540 sock_register(&rose_family_ops); 1541 register_netdevice_notifier(&rose_dev_notifier); 1542 1543 ax25_register_pid(&rose_pid); 1544 ax25_linkfail_register(&rose_linkfail_notifier); 1545 1546 #ifdef CONFIG_SYSCTL 1547 rose_register_sysctl(); 1548 #endif 1549 rose_loopback_init(); 1550 1551 rose_add_loopback_neigh(); 1552 1553 proc_create_seq("rose", 0444, init_net.proc_net, &rose_info_seqops); 1554 proc_create_seq("rose_neigh", 0444, init_net.proc_net, 1555 &rose_neigh_seqops); 1556 proc_create_seq("rose_nodes", 0444, init_net.proc_net, 1557 &rose_node_seqops); 1558 proc_create_seq("rose_routes", 0444, init_net.proc_net, 1559 &rose_route_seqops); 1560 out: 1561 return rc; 1562 fail: 1563 while (--i >= 0) { 1564 unregister_netdev(dev_rose[i]); 1565 free_netdev(dev_rose[i]); 1566 } 1567 kfree(dev_rose); 1568 out_proto_unregister: 1569 proto_unregister(&rose_proto); 1570 goto out; 1571 } 1572 module_init(rose_proto_init); 1573 1574 module_param(rose_ndevs, int, 0); 1575 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); 1576 1577 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); 1578 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); 1579 MODULE_LICENSE("GPL"); 1580 MODULE_ALIAS_NETPROTO(PF_ROSE); 1581 1582 static void __exit rose_exit(void) 1583 { 1584 int i; 1585 1586 remove_proc_entry("rose", init_net.proc_net); 1587 remove_proc_entry("rose_neigh", init_net.proc_net); 1588 remove_proc_entry("rose_nodes", init_net.proc_net); 1589 remove_proc_entry("rose_routes", init_net.proc_net); 1590 rose_loopback_clear(); 1591 1592 rose_rt_free(); 1593 1594 ax25_protocol_release(AX25_P_ROSE); 1595 ax25_linkfail_release(&rose_linkfail_notifier); 1596 1597 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1598 ax25_listen_release(&rose_callsign, NULL); 1599 1600 #ifdef CONFIG_SYSCTL 1601 rose_unregister_sysctl(); 1602 #endif 1603 unregister_netdevice_notifier(&rose_dev_notifier); 1604 1605 sock_unregister(PF_ROSE); 1606 1607 for (i = 0; i < rose_ndevs; i++) { 1608 struct net_device *dev = dev_rose[i]; 1609 1610 if (dev) { 1611 unregister_netdev(dev); 1612 free_netdev(dev); 1613 } 1614 } 1615 1616 kfree(dev_rose); 1617 proto_unregister(&rose_proto); 1618 } 1619 1620 module_exit(rose_exit); 1621