1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License as published by 4 * the Free Software Foundation; either version 2 of the License, or 5 * (at your option) any later version. 6 * 7 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) 8 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk) 9 * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net) 10 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi) 11 */ 12 13 #include <linux/capability.h> 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/init.h> 17 #include <linux/errno.h> 18 #include <linux/types.h> 19 #include <linux/socket.h> 20 #include <linux/in.h> 21 #include <linux/kernel.h> 22 #include <linux/sched.h> 23 #include <linux/spinlock.h> 24 #include <linux/timer.h> 25 #include <linux/string.h> 26 #include <linux/sockios.h> 27 #include <linux/net.h> 28 #include <linux/stat.h> 29 #include <net/ax25.h> 30 #include <linux/inet.h> 31 #include <linux/netdevice.h> 32 #include <linux/if_arp.h> 33 #include <linux/skbuff.h> 34 #include <net/sock.h> 35 #include <asm/system.h> 36 #include <asm/uaccess.h> 37 #include <linux/fcntl.h> 38 #include <linux/termios.h> 39 #include <linux/mm.h> 40 #include <linux/interrupt.h> 41 #include <linux/notifier.h> 42 #include <net/rose.h> 43 #include <linux/proc_fs.h> 44 #include <linux/seq_file.h> 45 #include <net/tcp_states.h> 46 #include <net/ip.h> 47 #include <net/arp.h> 48 49 static int rose_ndevs = 10; 50 51 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0; 52 int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1; 53 int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2; 54 int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3; 55 int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE; 56 int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB; 57 int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING; 58 int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT; 59 int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC; 60 int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE; 61 62 static HLIST_HEAD(rose_list); 63 static DEFINE_SPINLOCK(rose_list_lock); 64 65 static struct proto_ops rose_proto_ops; 66 67 ax25_address rose_callsign; 68 69 /* 70 * Convert a ROSE address into text. 71 */ 72 const char *rose2asc(const rose_address *addr) 73 { 74 static char buffer[11]; 75 76 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 && 77 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 && 78 addr->rose_addr[4] == 0x00) { 79 strcpy(buffer, "*"); 80 } else { 81 sprintf(buffer, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF, 82 addr->rose_addr[1] & 0xFF, 83 addr->rose_addr[2] & 0xFF, 84 addr->rose_addr[3] & 0xFF, 85 addr->rose_addr[4] & 0xFF); 86 } 87 88 return buffer; 89 } 90 91 /* 92 * Compare two ROSE addresses, 0 == equal. 93 */ 94 int rosecmp(rose_address *addr1, rose_address *addr2) 95 { 96 int i; 97 98 for (i = 0; i < 5; i++) 99 if (addr1->rose_addr[i] != addr2->rose_addr[i]) 100 return 1; 101 102 return 0; 103 } 104 105 /* 106 * Compare two ROSE addresses for only mask digits, 0 == equal. 107 */ 108 int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask) 109 { 110 int i, j; 111 112 if (mask > 10) 113 return 1; 114 115 for (i = 0; i < mask; i++) { 116 j = i / 2; 117 118 if ((i % 2) != 0) { 119 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) 120 return 1; 121 } else { 122 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) 123 return 1; 124 } 125 } 126 127 return 0; 128 } 129 130 /* 131 * Socket removal during an interrupt is now safe. 132 */ 133 static void rose_remove_socket(struct sock *sk) 134 { 135 spin_lock_bh(&rose_list_lock); 136 sk_del_node_init(sk); 137 spin_unlock_bh(&rose_list_lock); 138 } 139 140 /* 141 * Kill all bound sockets on a broken link layer connection to a 142 * particular neighbour. 143 */ 144 void rose_kill_by_neigh(struct rose_neigh *neigh) 145 { 146 struct sock *s; 147 struct hlist_node *node; 148 149 spin_lock_bh(&rose_list_lock); 150 sk_for_each(s, node, &rose_list) { 151 struct rose_sock *rose = rose_sk(s); 152 153 if (rose->neighbour == neigh) { 154 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 155 rose->neighbour->use--; 156 rose->neighbour = NULL; 157 } 158 } 159 spin_unlock_bh(&rose_list_lock); 160 } 161 162 /* 163 * Kill all bound sockets on a dropped device. 164 */ 165 static void rose_kill_by_device(struct net_device *dev) 166 { 167 struct sock *s; 168 struct hlist_node *node; 169 170 spin_lock_bh(&rose_list_lock); 171 sk_for_each(s, node, &rose_list) { 172 struct rose_sock *rose = rose_sk(s); 173 174 if (rose->device == dev) { 175 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); 176 rose->neighbour->use--; 177 rose->device = NULL; 178 } 179 } 180 spin_unlock_bh(&rose_list_lock); 181 } 182 183 /* 184 * Handle device status changes. 185 */ 186 static int rose_device_event(struct notifier_block *this, unsigned long event, 187 void *ptr) 188 { 189 struct net_device *dev = (struct net_device *)ptr; 190 191 if (event != NETDEV_DOWN) 192 return NOTIFY_DONE; 193 194 switch (dev->type) { 195 case ARPHRD_ROSE: 196 rose_kill_by_device(dev); 197 break; 198 case ARPHRD_AX25: 199 rose_link_device_down(dev); 200 rose_rt_device_down(dev); 201 break; 202 } 203 204 return NOTIFY_DONE; 205 } 206 207 /* 208 * Add a socket to the bound sockets list. 209 */ 210 static void rose_insert_socket(struct sock *sk) 211 { 212 213 spin_lock_bh(&rose_list_lock); 214 sk_add_node(sk, &rose_list); 215 spin_unlock_bh(&rose_list_lock); 216 } 217 218 /* 219 * Find a socket that wants to accept the Call Request we just 220 * received. 221 */ 222 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) 223 { 224 struct sock *s; 225 struct hlist_node *node; 226 227 spin_lock_bh(&rose_list_lock); 228 sk_for_each(s, node, &rose_list) { 229 struct rose_sock *rose = rose_sk(s); 230 231 if (!rosecmp(&rose->source_addr, addr) && 232 !ax25cmp(&rose->source_call, call) && 233 !rose->source_ndigis && s->sk_state == TCP_LISTEN) 234 goto found; 235 } 236 237 sk_for_each(s, node, &rose_list) { 238 struct rose_sock *rose = rose_sk(s); 239 240 if (!rosecmp(&rose->source_addr, addr) && 241 !ax25cmp(&rose->source_call, &null_ax25_address) && 242 s->sk_state == TCP_LISTEN) 243 goto found; 244 } 245 s = NULL; 246 found: 247 spin_unlock_bh(&rose_list_lock); 248 return s; 249 } 250 251 /* 252 * Find a connected ROSE socket given my LCI and device. 253 */ 254 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) 255 { 256 struct sock *s; 257 struct hlist_node *node; 258 259 spin_lock_bh(&rose_list_lock); 260 sk_for_each(s, node, &rose_list) { 261 struct rose_sock *rose = rose_sk(s); 262 263 if (rose->lci == lci && rose->neighbour == neigh) 264 goto found; 265 } 266 s = NULL; 267 found: 268 spin_unlock_bh(&rose_list_lock); 269 return s; 270 } 271 272 /* 273 * Find a unique LCI for a given device. 274 */ 275 unsigned int rose_new_lci(struct rose_neigh *neigh) 276 { 277 int lci; 278 279 if (neigh->dce_mode) { 280 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) 281 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 282 return lci; 283 } else { 284 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) 285 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) 286 return lci; 287 } 288 289 return 0; 290 } 291 292 /* 293 * Deferred destroy. 294 */ 295 void rose_destroy_socket(struct sock *); 296 297 /* 298 * Handler for deferred kills. 299 */ 300 static void rose_destroy_timer(unsigned long data) 301 { 302 rose_destroy_socket((struct sock *)data); 303 } 304 305 /* 306 * This is called from user mode and the timers. Thus it protects itself 307 * against interrupt users but doesn't worry about being called during 308 * work. Once it is removed from the queue no interrupt or bottom half 309 * will touch it and we are (fairly 8-) ) safe. 310 */ 311 void rose_destroy_socket(struct sock *sk) 312 { 313 struct sk_buff *skb; 314 315 rose_remove_socket(sk); 316 rose_stop_heartbeat(sk); 317 rose_stop_idletimer(sk); 318 rose_stop_timer(sk); 319 320 rose_clear_queues(sk); /* Flush the queues */ 321 322 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { 323 if (skb->sk != sk) { /* A pending connection */ 324 /* Queue the unaccepted socket for death */ 325 sock_set_flag(skb->sk, SOCK_DEAD); 326 rose_start_heartbeat(skb->sk); 327 rose_sk(skb->sk)->state = ROSE_STATE_0; 328 } 329 330 kfree_skb(skb); 331 } 332 333 if (atomic_read(&sk->sk_wmem_alloc) || 334 atomic_read(&sk->sk_rmem_alloc)) { 335 /* Defer: outstanding buffers */ 336 init_timer(&sk->sk_timer); 337 sk->sk_timer.expires = jiffies + 10 * HZ; 338 sk->sk_timer.function = rose_destroy_timer; 339 sk->sk_timer.data = (unsigned long)sk; 340 add_timer(&sk->sk_timer); 341 } else 342 sock_put(sk); 343 } 344 345 /* 346 * Handling for system calls applied via the various interfaces to a 347 * ROSE socket object. 348 */ 349 350 static int rose_setsockopt(struct socket *sock, int level, int optname, 351 char __user *optval, int optlen) 352 { 353 struct sock *sk = sock->sk; 354 struct rose_sock *rose = rose_sk(sk); 355 int opt; 356 357 if (level != SOL_ROSE) 358 return -ENOPROTOOPT; 359 360 if (optlen < sizeof(int)) 361 return -EINVAL; 362 363 if (get_user(opt, (int __user *)optval)) 364 return -EFAULT; 365 366 switch (optname) { 367 case ROSE_DEFER: 368 rose->defer = opt ? 1 : 0; 369 return 0; 370 371 case ROSE_T1: 372 if (opt < 1) 373 return -EINVAL; 374 rose->t1 = opt * HZ; 375 return 0; 376 377 case ROSE_T2: 378 if (opt < 1) 379 return -EINVAL; 380 rose->t2 = opt * HZ; 381 return 0; 382 383 case ROSE_T3: 384 if (opt < 1) 385 return -EINVAL; 386 rose->t3 = opt * HZ; 387 return 0; 388 389 case ROSE_HOLDBACK: 390 if (opt < 1) 391 return -EINVAL; 392 rose->hb = opt * HZ; 393 return 0; 394 395 case ROSE_IDLE: 396 if (opt < 0) 397 return -EINVAL; 398 rose->idle = opt * 60 * HZ; 399 return 0; 400 401 case ROSE_QBITINCL: 402 rose->qbitincl = opt ? 1 : 0; 403 return 0; 404 405 default: 406 return -ENOPROTOOPT; 407 } 408 } 409 410 static int rose_getsockopt(struct socket *sock, int level, int optname, 411 char __user *optval, int __user *optlen) 412 { 413 struct sock *sk = sock->sk; 414 struct rose_sock *rose = rose_sk(sk); 415 int val = 0; 416 int len; 417 418 if (level != SOL_ROSE) 419 return -ENOPROTOOPT; 420 421 if (get_user(len, optlen)) 422 return -EFAULT; 423 424 if (len < 0) 425 return -EINVAL; 426 427 switch (optname) { 428 case ROSE_DEFER: 429 val = rose->defer; 430 break; 431 432 case ROSE_T1: 433 val = rose->t1 / HZ; 434 break; 435 436 case ROSE_T2: 437 val = rose->t2 / HZ; 438 break; 439 440 case ROSE_T3: 441 val = rose->t3 / HZ; 442 break; 443 444 case ROSE_HOLDBACK: 445 val = rose->hb / HZ; 446 break; 447 448 case ROSE_IDLE: 449 val = rose->idle / (60 * HZ); 450 break; 451 452 case ROSE_QBITINCL: 453 val = rose->qbitincl; 454 break; 455 456 default: 457 return -ENOPROTOOPT; 458 } 459 460 len = min_t(unsigned int, len, sizeof(int)); 461 462 if (put_user(len, optlen)) 463 return -EFAULT; 464 465 return copy_to_user(optval, &val, len) ? -EFAULT : 0; 466 } 467 468 static int rose_listen(struct socket *sock, int backlog) 469 { 470 struct sock *sk = sock->sk; 471 472 if (sk->sk_state != TCP_LISTEN) { 473 struct rose_sock *rose = rose_sk(sk); 474 475 rose->dest_ndigis = 0; 476 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); 477 memset(&rose->dest_call, 0, AX25_ADDR_LEN); 478 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); 479 sk->sk_max_ack_backlog = backlog; 480 sk->sk_state = TCP_LISTEN; 481 return 0; 482 } 483 484 return -EOPNOTSUPP; 485 } 486 487 static struct proto rose_proto = { 488 .name = "ROSE", 489 .owner = THIS_MODULE, 490 .obj_size = sizeof(struct rose_sock), 491 }; 492 493 static int rose_create(struct socket *sock, int protocol) 494 { 495 struct sock *sk; 496 struct rose_sock *rose; 497 498 if (sock->type != SOCK_SEQPACKET || protocol != 0) 499 return -ESOCKTNOSUPPORT; 500 501 if ((sk = sk_alloc(PF_ROSE, GFP_ATOMIC, &rose_proto, 1)) == NULL) 502 return -ENOMEM; 503 504 rose = rose_sk(sk); 505 506 sock_init_data(sock, sk); 507 508 skb_queue_head_init(&rose->ack_queue); 509 #ifdef M_BIT 510 skb_queue_head_init(&rose->frag_queue); 511 rose->fraglen = 0; 512 #endif 513 514 sock->ops = &rose_proto_ops; 515 sk->sk_protocol = protocol; 516 517 init_timer(&rose->timer); 518 init_timer(&rose->idletimer); 519 520 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); 521 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); 522 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); 523 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); 524 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); 525 526 rose->state = ROSE_STATE_0; 527 528 return 0; 529 } 530 531 static struct sock *rose_make_new(struct sock *osk) 532 { 533 struct sock *sk; 534 struct rose_sock *rose, *orose; 535 536 if (osk->sk_type != SOCK_SEQPACKET) 537 return NULL; 538 539 if ((sk = sk_alloc(PF_ROSE, GFP_ATOMIC, &rose_proto, 1)) == NULL) 540 return NULL; 541 542 rose = rose_sk(sk); 543 544 sock_init_data(NULL, sk); 545 546 skb_queue_head_init(&rose->ack_queue); 547 #ifdef M_BIT 548 skb_queue_head_init(&rose->frag_queue); 549 rose->fraglen = 0; 550 #endif 551 552 sk->sk_type = osk->sk_type; 553 sk->sk_socket = osk->sk_socket; 554 sk->sk_priority = osk->sk_priority; 555 sk->sk_protocol = osk->sk_protocol; 556 sk->sk_rcvbuf = osk->sk_rcvbuf; 557 sk->sk_sndbuf = osk->sk_sndbuf; 558 sk->sk_state = TCP_ESTABLISHED; 559 sk->sk_sleep = osk->sk_sleep; 560 sock_copy_flags(sk, osk); 561 562 init_timer(&rose->timer); 563 init_timer(&rose->idletimer); 564 565 orose = rose_sk(osk); 566 rose->t1 = orose->t1; 567 rose->t2 = orose->t2; 568 rose->t3 = orose->t3; 569 rose->hb = orose->hb; 570 rose->idle = orose->idle; 571 rose->defer = orose->defer; 572 rose->device = orose->device; 573 rose->qbitincl = orose->qbitincl; 574 575 return sk; 576 } 577 578 static int rose_release(struct socket *sock) 579 { 580 struct sock *sk = sock->sk; 581 struct rose_sock *rose; 582 583 if (sk == NULL) return 0; 584 585 rose = rose_sk(sk); 586 587 switch (rose->state) { 588 case ROSE_STATE_0: 589 rose_disconnect(sk, 0, -1, -1); 590 rose_destroy_socket(sk); 591 break; 592 593 case ROSE_STATE_2: 594 rose->neighbour->use--; 595 rose_disconnect(sk, 0, -1, -1); 596 rose_destroy_socket(sk); 597 break; 598 599 case ROSE_STATE_1: 600 case ROSE_STATE_3: 601 case ROSE_STATE_4: 602 case ROSE_STATE_5: 603 rose_clear_queues(sk); 604 rose_stop_idletimer(sk); 605 rose_write_internal(sk, ROSE_CLEAR_REQUEST); 606 rose_start_t3timer(sk); 607 rose->state = ROSE_STATE_2; 608 sk->sk_state = TCP_CLOSE; 609 sk->sk_shutdown |= SEND_SHUTDOWN; 610 sk->sk_state_change(sk); 611 sock_set_flag(sk, SOCK_DEAD); 612 sock_set_flag(sk, SOCK_DESTROY); 613 break; 614 615 default: 616 break; 617 } 618 619 sock->sk = NULL; 620 621 return 0; 622 } 623 624 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) 625 { 626 struct sock *sk = sock->sk; 627 struct rose_sock *rose = rose_sk(sk); 628 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 629 struct net_device *dev; 630 ax25_address *source; 631 ax25_uid_assoc *user; 632 int n; 633 634 if (!sock_flag(sk, SOCK_ZAPPED)) 635 return -EINVAL; 636 637 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 638 return -EINVAL; 639 640 if (addr->srose_family != AF_ROSE) 641 return -EINVAL; 642 643 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 644 return -EINVAL; 645 646 if (addr->srose_ndigis > ROSE_MAX_DIGIS) 647 return -EINVAL; 648 649 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) { 650 SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n"); 651 return -EADDRNOTAVAIL; 652 } 653 654 source = &addr->srose_call; 655 656 user = ax25_findbyuid(current->euid); 657 if (user) { 658 rose->source_call = user->call; 659 ax25_uid_put(user); 660 } else { 661 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) 662 return -EACCES; 663 rose->source_call = *source; 664 } 665 666 rose->source_addr = addr->srose_addr; 667 rose->device = dev; 668 rose->source_ndigis = addr->srose_ndigis; 669 670 if (addr_len == sizeof(struct full_sockaddr_rose)) { 671 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 672 for (n = 0 ; n < addr->srose_ndigis ; n++) 673 rose->source_digis[n] = full_addr->srose_digis[n]; 674 } else { 675 if (rose->source_ndigis == 1) { 676 rose->source_digis[0] = addr->srose_digi; 677 } 678 } 679 680 rose_insert_socket(sk); 681 682 sock_reset_flag(sk, SOCK_ZAPPED); 683 SOCK_DEBUG(sk, "ROSE: socket is bound\n"); 684 return 0; 685 } 686 687 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) 688 { 689 struct sock *sk = sock->sk; 690 struct rose_sock *rose = rose_sk(sk); 691 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; 692 unsigned char cause, diagnostic; 693 struct net_device *dev; 694 ax25_uid_assoc *user; 695 int n; 696 697 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { 698 sock->state = SS_CONNECTED; 699 return 0; /* Connect completed during a ERESTARTSYS event */ 700 } 701 702 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { 703 sock->state = SS_UNCONNECTED; 704 return -ECONNREFUSED; 705 } 706 707 if (sk->sk_state == TCP_ESTABLISHED) 708 return -EISCONN; /* No reconnect on a seqpacket socket */ 709 710 sk->sk_state = TCP_CLOSE; 711 sock->state = SS_UNCONNECTED; 712 713 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) 714 return -EINVAL; 715 716 if (addr->srose_family != AF_ROSE) 717 return -EINVAL; 718 719 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) 720 return -EINVAL; 721 722 if (addr->srose_ndigis > ROSE_MAX_DIGIS) 723 return -EINVAL; 724 725 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ 726 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) 727 return -EINVAL; 728 729 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, 730 &diagnostic); 731 if (!rose->neighbour) 732 return -ENETUNREACH; 733 734 rose->lci = rose_new_lci(rose->neighbour); 735 if (!rose->lci) 736 return -ENETUNREACH; 737 738 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ 739 sock_reset_flag(sk, SOCK_ZAPPED); 740 741 if ((dev = rose_dev_first()) == NULL) 742 return -ENETUNREACH; 743 744 user = ax25_findbyuid(current->euid); 745 if (!user) 746 return -EINVAL; 747 748 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); 749 rose->source_call = user->call; 750 rose->device = dev; 751 ax25_uid_put(user); 752 753 rose_insert_socket(sk); /* Finish the bind */ 754 } 755 rose_try_next_neigh: 756 rose->dest_addr = addr->srose_addr; 757 rose->dest_call = addr->srose_call; 758 rose->rand = ((long)rose & 0xFFFF) + rose->lci; 759 rose->dest_ndigis = addr->srose_ndigis; 760 761 if (addr_len == sizeof(struct full_sockaddr_rose)) { 762 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; 763 for (n = 0 ; n < addr->srose_ndigis ; n++) 764 rose->dest_digis[n] = full_addr->srose_digis[n]; 765 } else { 766 if (rose->dest_ndigis == 1) { 767 rose->dest_digis[0] = addr->srose_digi; 768 } 769 } 770 771 /* Move to connecting socket, start sending Connect Requests */ 772 sock->state = SS_CONNECTING; 773 sk->sk_state = TCP_SYN_SENT; 774 775 rose->state = ROSE_STATE_1; 776 777 rose->neighbour->use++; 778 779 rose_write_internal(sk, ROSE_CALL_REQUEST); 780 rose_start_heartbeat(sk); 781 rose_start_t1timer(sk); 782 783 /* Now the loop */ 784 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) 785 return -EINPROGRESS; 786 787 /* 788 * A Connect Ack with Choke or timeout or failed routing will go to 789 * closed. 790 */ 791 if (sk->sk_state == TCP_SYN_SENT) { 792 struct task_struct *tsk = current; 793 DECLARE_WAITQUEUE(wait, tsk); 794 795 add_wait_queue(sk->sk_sleep, &wait); 796 for (;;) { 797 set_current_state(TASK_INTERRUPTIBLE); 798 if (sk->sk_state != TCP_SYN_SENT) 799 break; 800 if (!signal_pending(tsk)) { 801 schedule(); 802 continue; 803 } 804 current->state = TASK_RUNNING; 805 remove_wait_queue(sk->sk_sleep, &wait); 806 return -ERESTARTSYS; 807 } 808 current->state = TASK_RUNNING; 809 remove_wait_queue(sk->sk_sleep, &wait); 810 } 811 812 if (sk->sk_state != TCP_ESTABLISHED) { 813 /* Try next neighbour */ 814 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, &diagnostic); 815 if (rose->neighbour) 816 goto rose_try_next_neigh; 817 /* No more neighbour */ 818 sock->state = SS_UNCONNECTED; 819 return sock_error(sk); /* Always set at this point */ 820 } 821 822 sock->state = SS_CONNECTED; 823 824 return 0; 825 } 826 827 static int rose_accept(struct socket *sock, struct socket *newsock, int flags) 828 { 829 struct task_struct *tsk = current; 830 DECLARE_WAITQUEUE(wait, tsk); 831 struct sk_buff *skb; 832 struct sock *newsk; 833 struct sock *sk; 834 int err = 0; 835 836 if ((sk = sock->sk) == NULL) 837 return -EINVAL; 838 839 lock_sock(sk); 840 if (sk->sk_type != SOCK_SEQPACKET) { 841 err = -EOPNOTSUPP; 842 goto out; 843 } 844 845 if (sk->sk_state != TCP_LISTEN) { 846 err = -EINVAL; 847 goto out; 848 } 849 850 /* 851 * The write queue this time is holding sockets ready to use 852 * hooked into the SABM we saved 853 */ 854 add_wait_queue(sk->sk_sleep, &wait); 855 for (;;) { 856 skb = skb_dequeue(&sk->sk_receive_queue); 857 if (skb) 858 break; 859 860 current->state = TASK_INTERRUPTIBLE; 861 release_sock(sk); 862 if (flags & O_NONBLOCK) { 863 current->state = TASK_RUNNING; 864 remove_wait_queue(sk->sk_sleep, &wait); 865 return -EWOULDBLOCK; 866 } 867 if (!signal_pending(tsk)) { 868 schedule(); 869 lock_sock(sk); 870 continue; 871 } 872 return -ERESTARTSYS; 873 } 874 current->state = TASK_RUNNING; 875 remove_wait_queue(sk->sk_sleep, &wait); 876 877 newsk = skb->sk; 878 newsk->sk_socket = newsock; 879 newsk->sk_sleep = &newsock->wait; 880 881 /* Now attach up the new socket */ 882 skb->sk = NULL; 883 kfree_skb(skb); 884 sk->sk_ack_backlog--; 885 newsock->sk = newsk; 886 887 out: 888 release_sock(sk); 889 890 return err; 891 } 892 893 static int rose_getname(struct socket *sock, struct sockaddr *uaddr, 894 int *uaddr_len, int peer) 895 { 896 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; 897 struct sock *sk = sock->sk; 898 struct rose_sock *rose = rose_sk(sk); 899 int n; 900 901 if (peer != 0) { 902 if (sk->sk_state != TCP_ESTABLISHED) 903 return -ENOTCONN; 904 srose->srose_family = AF_ROSE; 905 srose->srose_addr = rose->dest_addr; 906 srose->srose_call = rose->dest_call; 907 srose->srose_ndigis = rose->dest_ndigis; 908 for (n = 0; n < rose->dest_ndigis; n++) 909 srose->srose_digis[n] = rose->dest_digis[n]; 910 } else { 911 srose->srose_family = AF_ROSE; 912 srose->srose_addr = rose->source_addr; 913 srose->srose_call = rose->source_call; 914 srose->srose_ndigis = rose->source_ndigis; 915 for (n = 0; n < rose->source_ndigis; n++) 916 srose->srose_digis[n] = rose->source_digis[n]; 917 } 918 919 *uaddr_len = sizeof(struct full_sockaddr_rose); 920 return 0; 921 } 922 923 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) 924 { 925 struct sock *sk; 926 struct sock *make; 927 struct rose_sock *make_rose; 928 struct rose_facilities_struct facilities; 929 int n, len; 930 931 skb->sk = NULL; /* Initially we don't know who it's for */ 932 933 /* 934 * skb->data points to the rose frame start 935 */ 936 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); 937 938 len = (((skb->data[3] >> 4) & 0x0F) + 1) / 2; 939 len += (((skb->data[3] >> 0) & 0x0F) + 1) / 2; 940 if (!rose_parse_facilities(skb->data + len + 4, &facilities)) { 941 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); 942 return 0; 943 } 944 945 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); 946 947 /* 948 * We can't accept the Call Request. 949 */ 950 if (sk == NULL || sk_acceptq_is_full(sk) || 951 (make = rose_make_new(sk)) == NULL) { 952 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); 953 return 0; 954 } 955 956 skb->sk = make; 957 make->sk_state = TCP_ESTABLISHED; 958 make_rose = rose_sk(make); 959 960 make_rose->lci = lci; 961 make_rose->dest_addr = facilities.dest_addr; 962 make_rose->dest_call = facilities.dest_call; 963 make_rose->dest_ndigis = facilities.dest_ndigis; 964 for (n = 0 ; n < facilities.dest_ndigis ; n++) 965 make_rose->dest_digis[n] = facilities.dest_digis[n]; 966 make_rose->source_addr = facilities.source_addr; 967 make_rose->source_call = facilities.source_call; 968 make_rose->source_ndigis = facilities.source_ndigis; 969 for (n = 0 ; n < facilities.source_ndigis ; n++) 970 make_rose->source_digis[n]= facilities.source_digis[n]; 971 make_rose->neighbour = neigh; 972 make_rose->device = dev; 973 make_rose->facilities = facilities; 974 975 make_rose->neighbour->use++; 976 977 if (rose_sk(sk)->defer) { 978 make_rose->state = ROSE_STATE_5; 979 } else { 980 rose_write_internal(make, ROSE_CALL_ACCEPTED); 981 make_rose->state = ROSE_STATE_3; 982 rose_start_idletimer(make); 983 } 984 985 make_rose->condition = 0x00; 986 make_rose->vs = 0; 987 make_rose->va = 0; 988 make_rose->vr = 0; 989 make_rose->vl = 0; 990 sk->sk_ack_backlog++; 991 992 rose_insert_socket(make); 993 994 skb_queue_head(&sk->sk_receive_queue, skb); 995 996 rose_start_heartbeat(make); 997 998 if (!sock_flag(sk, SOCK_DEAD)) 999 sk->sk_data_ready(sk, skb->len); 1000 1001 return 1; 1002 } 1003 1004 static int rose_sendmsg(struct kiocb *iocb, struct socket *sock, 1005 struct msghdr *msg, size_t len) 1006 { 1007 struct sock *sk = sock->sk; 1008 struct rose_sock *rose = rose_sk(sk); 1009 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name; 1010 int err; 1011 struct full_sockaddr_rose srose; 1012 struct sk_buff *skb; 1013 unsigned char *asmptr; 1014 int n, size, qbit = 0; 1015 1016 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) 1017 return -EINVAL; 1018 1019 if (sock_flag(sk, SOCK_ZAPPED)) 1020 return -EADDRNOTAVAIL; 1021 1022 if (sk->sk_shutdown & SEND_SHUTDOWN) { 1023 send_sig(SIGPIPE, current, 0); 1024 return -EPIPE; 1025 } 1026 1027 if (rose->neighbour == NULL || rose->device == NULL) 1028 return -ENETUNREACH; 1029 1030 if (usrose != NULL) { 1031 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) 1032 return -EINVAL; 1033 memset(&srose, 0, sizeof(struct full_sockaddr_rose)); 1034 memcpy(&srose, usrose, msg->msg_namelen); 1035 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || 1036 ax25cmp(&rose->dest_call, &srose.srose_call) != 0) 1037 return -EISCONN; 1038 if (srose.srose_ndigis != rose->dest_ndigis) 1039 return -EISCONN; 1040 if (srose.srose_ndigis == rose->dest_ndigis) { 1041 for (n = 0 ; n < srose.srose_ndigis ; n++) 1042 if (ax25cmp(&rose->dest_digis[n], 1043 &srose.srose_digis[n])) 1044 return -EISCONN; 1045 } 1046 if (srose.srose_family != AF_ROSE) 1047 return -EINVAL; 1048 } else { 1049 if (sk->sk_state != TCP_ESTABLISHED) 1050 return -ENOTCONN; 1051 1052 srose.srose_family = AF_ROSE; 1053 srose.srose_addr = rose->dest_addr; 1054 srose.srose_call = rose->dest_call; 1055 srose.srose_ndigis = rose->dest_ndigis; 1056 for (n = 0 ; n < rose->dest_ndigis ; n++) 1057 srose.srose_digis[n] = rose->dest_digis[n]; 1058 } 1059 1060 SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n"); 1061 1062 /* Build a packet */ 1063 SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n"); 1064 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; 1065 1066 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) 1067 return err; 1068 1069 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); 1070 1071 /* 1072 * Put the data on the end 1073 */ 1074 SOCK_DEBUG(sk, "ROSE: Appending user data\n"); 1075 1076 asmptr = skb->h.raw = skb_put(skb, len); 1077 1078 err = memcpy_fromiovec(asmptr, msg->msg_iov, len); 1079 if (err) { 1080 kfree_skb(skb); 1081 return err; 1082 } 1083 1084 /* 1085 * If the Q BIT Include socket option is in force, the first 1086 * byte of the user data is the logical value of the Q Bit. 1087 */ 1088 if (rose->qbitincl) { 1089 qbit = skb->data[0]; 1090 skb_pull(skb, 1); 1091 } 1092 1093 /* 1094 * Push down the ROSE header 1095 */ 1096 asmptr = skb_push(skb, ROSE_MIN_LEN); 1097 1098 SOCK_DEBUG(sk, "ROSE: Building Network Header.\n"); 1099 1100 /* Build a ROSE Network header */ 1101 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; 1102 asmptr[1] = (rose->lci >> 0) & 0xFF; 1103 asmptr[2] = ROSE_DATA; 1104 1105 if (qbit) 1106 asmptr[0] |= ROSE_Q_BIT; 1107 1108 SOCK_DEBUG(sk, "ROSE: Built header.\n"); 1109 1110 SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n"); 1111 1112 if (sk->sk_state != TCP_ESTABLISHED) { 1113 kfree_skb(skb); 1114 return -ENOTCONN; 1115 } 1116 1117 #ifdef M_BIT 1118 #define ROSE_PACLEN (256-ROSE_MIN_LEN) 1119 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { 1120 unsigned char header[ROSE_MIN_LEN]; 1121 struct sk_buff *skbn; 1122 int frontlen; 1123 int lg; 1124 1125 /* Save a copy of the Header */ 1126 memcpy(header, skb->data, ROSE_MIN_LEN); 1127 skb_pull(skb, ROSE_MIN_LEN); 1128 1129 frontlen = skb_headroom(skb); 1130 1131 while (skb->len > 0) { 1132 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { 1133 kfree_skb(skb); 1134 return err; 1135 } 1136 1137 skbn->sk = sk; 1138 skbn->free = 1; 1139 skbn->arp = 1; 1140 1141 skb_reserve(skbn, frontlen); 1142 1143 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; 1144 1145 /* Copy the user data */ 1146 memcpy(skb_put(skbn, lg), skb->data, lg); 1147 skb_pull(skb, lg); 1148 1149 /* Duplicate the Header */ 1150 skb_push(skbn, ROSE_MIN_LEN); 1151 memcpy(skbn->data, header, ROSE_MIN_LEN); 1152 1153 if (skb->len > 0) 1154 skbn->data[2] |= M_BIT; 1155 1156 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ 1157 } 1158 1159 skb->free = 1; 1160 kfree_skb(skb); 1161 } else { 1162 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ 1163 } 1164 #else 1165 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ 1166 #endif 1167 1168 rose_kick(sk); 1169 1170 return len; 1171 } 1172 1173 1174 static int rose_recvmsg(struct kiocb *iocb, struct socket *sock, 1175 struct msghdr *msg, size_t size, int flags) 1176 { 1177 struct sock *sk = sock->sk; 1178 struct rose_sock *rose = rose_sk(sk); 1179 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name; 1180 size_t copied; 1181 unsigned char *asmptr; 1182 struct sk_buff *skb; 1183 int n, er, qbit; 1184 1185 /* 1186 * This works for seqpacket too. The receiver has ordered the queue for 1187 * us! We do one quick check first though 1188 */ 1189 if (sk->sk_state != TCP_ESTABLISHED) 1190 return -ENOTCONN; 1191 1192 /* Now we can treat all alike */ 1193 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) 1194 return er; 1195 1196 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; 1197 1198 skb_pull(skb, ROSE_MIN_LEN); 1199 1200 if (rose->qbitincl) { 1201 asmptr = skb_push(skb, 1); 1202 *asmptr = qbit; 1203 } 1204 1205 skb->h.raw = skb->data; 1206 copied = skb->len; 1207 1208 if (copied > size) { 1209 copied = size; 1210 msg->msg_flags |= MSG_TRUNC; 1211 } 1212 1213 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); 1214 1215 if (srose != NULL) { 1216 srose->srose_family = AF_ROSE; 1217 srose->srose_addr = rose->dest_addr; 1218 srose->srose_call = rose->dest_call; 1219 srose->srose_ndigis = rose->dest_ndigis; 1220 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) { 1221 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name; 1222 for (n = 0 ; n < rose->dest_ndigis ; n++) 1223 full_srose->srose_digis[n] = rose->dest_digis[n]; 1224 msg->msg_namelen = sizeof(struct full_sockaddr_rose); 1225 } else { 1226 if (rose->dest_ndigis >= 1) { 1227 srose->srose_ndigis = 1; 1228 srose->srose_digi = rose->dest_digis[0]; 1229 } 1230 msg->msg_namelen = sizeof(struct sockaddr_rose); 1231 } 1232 } 1233 1234 skb_free_datagram(sk, skb); 1235 1236 return copied; 1237 } 1238 1239 1240 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 1241 { 1242 struct sock *sk = sock->sk; 1243 struct rose_sock *rose = rose_sk(sk); 1244 void __user *argp = (void __user *)arg; 1245 1246 switch (cmd) { 1247 case TIOCOUTQ: { 1248 long amount; 1249 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc); 1250 if (amount < 0) 1251 amount = 0; 1252 return put_user(amount, (unsigned int __user *) argp); 1253 } 1254 1255 case TIOCINQ: { 1256 struct sk_buff *skb; 1257 long amount = 0L; 1258 /* These two are safe on a single CPU system as only user tasks fiddle here */ 1259 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) 1260 amount = skb->len; 1261 return put_user(amount, (unsigned int __user *) argp); 1262 } 1263 1264 case SIOCGSTAMP: 1265 return sock_get_timestamp(sk, (struct timeval __user *) argp); 1266 1267 case SIOCGIFADDR: 1268 case SIOCSIFADDR: 1269 case SIOCGIFDSTADDR: 1270 case SIOCSIFDSTADDR: 1271 case SIOCGIFBRDADDR: 1272 case SIOCSIFBRDADDR: 1273 case SIOCGIFNETMASK: 1274 case SIOCSIFNETMASK: 1275 case SIOCGIFMETRIC: 1276 case SIOCSIFMETRIC: 1277 return -EINVAL; 1278 1279 case SIOCADDRT: 1280 case SIOCDELRT: 1281 case SIOCRSCLRRT: 1282 if (!capable(CAP_NET_ADMIN)) 1283 return -EPERM; 1284 return rose_rt_ioctl(cmd, argp); 1285 1286 case SIOCRSGCAUSE: { 1287 struct rose_cause_struct rose_cause; 1288 rose_cause.cause = rose->cause; 1289 rose_cause.diagnostic = rose->diagnostic; 1290 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; 1291 } 1292 1293 case SIOCRSSCAUSE: { 1294 struct rose_cause_struct rose_cause; 1295 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) 1296 return -EFAULT; 1297 rose->cause = rose_cause.cause; 1298 rose->diagnostic = rose_cause.diagnostic; 1299 return 0; 1300 } 1301 1302 case SIOCRSSL2CALL: 1303 if (!capable(CAP_NET_ADMIN)) return -EPERM; 1304 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1305 ax25_listen_release(&rose_callsign, NULL); 1306 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) 1307 return -EFAULT; 1308 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1309 ax25_listen_register(&rose_callsign, NULL); 1310 return 0; 1311 1312 case SIOCRSGL2CALL: 1313 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; 1314 1315 case SIOCRSACCEPT: 1316 if (rose->state == ROSE_STATE_5) { 1317 rose_write_internal(sk, ROSE_CALL_ACCEPTED); 1318 rose_start_idletimer(sk); 1319 rose->condition = 0x00; 1320 rose->vs = 0; 1321 rose->va = 0; 1322 rose->vr = 0; 1323 rose->vl = 0; 1324 rose->state = ROSE_STATE_3; 1325 } 1326 return 0; 1327 1328 default: 1329 return -ENOIOCTLCMD; 1330 } 1331 1332 return 0; 1333 } 1334 1335 #ifdef CONFIG_PROC_FS 1336 static void *rose_info_start(struct seq_file *seq, loff_t *pos) 1337 { 1338 int i; 1339 struct sock *s; 1340 struct hlist_node *node; 1341 1342 spin_lock_bh(&rose_list_lock); 1343 if (*pos == 0) 1344 return SEQ_START_TOKEN; 1345 1346 i = 1; 1347 sk_for_each(s, node, &rose_list) { 1348 if (i == *pos) 1349 return s; 1350 ++i; 1351 } 1352 return NULL; 1353 } 1354 1355 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) 1356 { 1357 ++*pos; 1358 1359 return (v == SEQ_START_TOKEN) ? sk_head(&rose_list) 1360 : sk_next((struct sock *)v); 1361 } 1362 1363 static void rose_info_stop(struct seq_file *seq, void *v) 1364 { 1365 spin_unlock_bh(&rose_list_lock); 1366 } 1367 1368 static int rose_info_show(struct seq_file *seq, void *v) 1369 { 1370 char buf[11]; 1371 1372 if (v == SEQ_START_TOKEN) 1373 seq_puts(seq, 1374 "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"); 1375 1376 else { 1377 struct sock *s = v; 1378 struct rose_sock *rose = rose_sk(s); 1379 const char *devname, *callsign; 1380 const struct net_device *dev = rose->device; 1381 1382 if (!dev) 1383 devname = "???"; 1384 else 1385 devname = dev->name; 1386 1387 seq_printf(seq, "%-10s %-9s ", 1388 rose2asc(&rose->dest_addr), 1389 ax2asc(buf, &rose->dest_call)); 1390 1391 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) 1392 callsign = "??????-?"; 1393 else 1394 callsign = ax2asc(buf, &rose->source_call); 1395 1396 seq_printf(seq, 1397 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", 1398 rose2asc(&rose->source_addr), 1399 callsign, 1400 devname, 1401 rose->lci & 0x0FFF, 1402 (rose->neighbour) ? rose->neighbour->number : 0, 1403 rose->state, 1404 rose->vs, 1405 rose->vr, 1406 rose->va, 1407 ax25_display_timer(&rose->timer) / HZ, 1408 rose->t1 / HZ, 1409 rose->t2 / HZ, 1410 rose->t3 / HZ, 1411 rose->hb / HZ, 1412 ax25_display_timer(&rose->idletimer) / (60 * HZ), 1413 rose->idle / (60 * HZ), 1414 atomic_read(&s->sk_wmem_alloc), 1415 atomic_read(&s->sk_rmem_alloc), 1416 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); 1417 } 1418 1419 return 0; 1420 } 1421 1422 static struct seq_operations rose_info_seqops = { 1423 .start = rose_info_start, 1424 .next = rose_info_next, 1425 .stop = rose_info_stop, 1426 .show = rose_info_show, 1427 }; 1428 1429 static int rose_info_open(struct inode *inode, struct file *file) 1430 { 1431 return seq_open(file, &rose_info_seqops); 1432 } 1433 1434 static struct file_operations rose_info_fops = { 1435 .owner = THIS_MODULE, 1436 .open = rose_info_open, 1437 .read = seq_read, 1438 .llseek = seq_lseek, 1439 .release = seq_release, 1440 }; 1441 #endif /* CONFIG_PROC_FS */ 1442 1443 static struct net_proto_family rose_family_ops = { 1444 .family = PF_ROSE, 1445 .create = rose_create, 1446 .owner = THIS_MODULE, 1447 }; 1448 1449 static struct proto_ops rose_proto_ops = { 1450 .family = PF_ROSE, 1451 .owner = THIS_MODULE, 1452 .release = rose_release, 1453 .bind = rose_bind, 1454 .connect = rose_connect, 1455 .socketpair = sock_no_socketpair, 1456 .accept = rose_accept, 1457 .getname = rose_getname, 1458 .poll = datagram_poll, 1459 .ioctl = rose_ioctl, 1460 .listen = rose_listen, 1461 .shutdown = sock_no_shutdown, 1462 .setsockopt = rose_setsockopt, 1463 .getsockopt = rose_getsockopt, 1464 .sendmsg = rose_sendmsg, 1465 .recvmsg = rose_recvmsg, 1466 .mmap = sock_no_mmap, 1467 .sendpage = sock_no_sendpage, 1468 }; 1469 1470 static struct notifier_block rose_dev_notifier = { 1471 .notifier_call = rose_device_event, 1472 }; 1473 1474 static struct net_device **dev_rose; 1475 1476 static int __init rose_proto_init(void) 1477 { 1478 int i; 1479 int rc; 1480 1481 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { 1482 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n"); 1483 rc = -EINVAL; 1484 goto out; 1485 } 1486 1487 rc = proto_register(&rose_proto, 0); 1488 if (rc != 0) 1489 goto out; 1490 1491 rose_callsign = null_ax25_address; 1492 1493 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL); 1494 if (dev_rose == NULL) { 1495 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); 1496 rc = -ENOMEM; 1497 goto out_proto_unregister; 1498 } 1499 1500 for (i = 0; i < rose_ndevs; i++) { 1501 struct net_device *dev; 1502 char name[IFNAMSIZ]; 1503 1504 sprintf(name, "rose%d", i); 1505 dev = alloc_netdev(sizeof(struct net_device_stats), 1506 name, rose_setup); 1507 if (!dev) { 1508 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); 1509 rc = -ENOMEM; 1510 goto fail; 1511 } 1512 rc = register_netdev(dev); 1513 if (rc) { 1514 printk(KERN_ERR "ROSE: netdevice registration failed\n"); 1515 free_netdev(dev); 1516 goto fail; 1517 } 1518 dev_rose[i] = dev; 1519 } 1520 1521 sock_register(&rose_family_ops); 1522 register_netdevice_notifier(&rose_dev_notifier); 1523 1524 ax25_protocol_register(AX25_P_ROSE, rose_route_frame); 1525 ax25_linkfail_register(rose_link_failed); 1526 1527 #ifdef CONFIG_SYSCTL 1528 rose_register_sysctl(); 1529 #endif 1530 rose_loopback_init(); 1531 1532 rose_add_loopback_neigh(); 1533 1534 proc_net_fops_create("rose", S_IRUGO, &rose_info_fops); 1535 proc_net_fops_create("rose_neigh", S_IRUGO, &rose_neigh_fops); 1536 proc_net_fops_create("rose_nodes", S_IRUGO, &rose_nodes_fops); 1537 proc_net_fops_create("rose_routes", S_IRUGO, &rose_routes_fops); 1538 out: 1539 return rc; 1540 fail: 1541 while (--i >= 0) { 1542 unregister_netdev(dev_rose[i]); 1543 free_netdev(dev_rose[i]); 1544 } 1545 kfree(dev_rose); 1546 out_proto_unregister: 1547 proto_unregister(&rose_proto); 1548 goto out; 1549 } 1550 module_init(rose_proto_init); 1551 1552 module_param(rose_ndevs, int, 0); 1553 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); 1554 1555 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); 1556 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); 1557 MODULE_LICENSE("GPL"); 1558 MODULE_ALIAS_NETPROTO(PF_ROSE); 1559 1560 static void __exit rose_exit(void) 1561 { 1562 int i; 1563 1564 proc_net_remove("rose"); 1565 proc_net_remove("rose_neigh"); 1566 proc_net_remove("rose_nodes"); 1567 proc_net_remove("rose_routes"); 1568 rose_loopback_clear(); 1569 1570 rose_rt_free(); 1571 1572 ax25_protocol_release(AX25_P_ROSE); 1573 ax25_linkfail_release(rose_link_failed); 1574 1575 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) 1576 ax25_listen_release(&rose_callsign, NULL); 1577 1578 #ifdef CONFIG_SYSCTL 1579 rose_unregister_sysctl(); 1580 #endif 1581 unregister_netdevice_notifier(&rose_dev_notifier); 1582 1583 sock_unregister(PF_ROSE); 1584 1585 for (i = 0; i < rose_ndevs; i++) { 1586 struct net_device *dev = dev_rose[i]; 1587 1588 if (dev) { 1589 unregister_netdev(dev); 1590 free_netdev(dev); 1591 } 1592 } 1593 1594 kfree(dev_rose); 1595 proto_unregister(&rose_proto); 1596 } 1597 1598 module_exit(rose_exit); 1599