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.
7 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
8 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
9 * Copyright (C) Darryl Miles G7LED (dlm@g7led.demon.co.uk)
10 * Copyright (C) Steven Whitehouse GW7RRM (stevew@acm.org)
11 * Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de)
12 * Copyright (C) Hans-Joachim Hetscher DD8NE (dd8ne@bnv-bamberg.de)
13 * Copyright (C) Hans Alblas PE1AYX (hans@esrac.ele.tue.nl)
14 * Copyright (C) Frederic Rible F1OAT (frible@teaser.fr)
16 #include <linux/config.h>
17 #include <linux/module.h>
18 #include <linux/errno.h>
19 #include <linux/types.h>
20 #include <linux/socket.h>
22 #include <linux/kernel.h>
23 #include <linux/sched.h>
24 #include <linux/timer.h>
25 #include <linux/string.h>
26 #include <linux/smp_lock.h>
27 #include <linux/sockios.h>
28 #include <linux/net.h>
30 #include <linux/inet.h>
31 #include <linux/netdevice.h>
32 #include <linux/if_arp.h>
33 #include <linux/skbuff.h>
35 #include <asm/uaccess.h>
36 #include <asm/system.h>
37 #include <linux/fcntl.h>
38 #include <linux/termios.h> /* For TIOCINQ/OUTQ */
40 #include <linux/interrupt.h>
41 #include <linux/notifier.h>
42 #include <linux/proc_fs.h>
43 #include <linux/stat.h>
44 #include <linux/netfilter.h>
45 #include <linux/sysctl.h>
46 #include <linux/init.h>
47 #include <linux/spinlock.h>
48 #include <net/tcp_states.h>
54 HLIST_HEAD(ax25_list);
55 DEFINE_SPINLOCK(ax25_list_lock);
57 static struct proto_ops ax25_proto_ops;
59 static void ax25_free_sock(struct sock *sk)
61 ax25_cb_put(ax25_sk(sk));
65 * Socket removal during an interrupt is now safe.
67 static void ax25_cb_del(ax25_cb *ax25)
69 if (!hlist_unhashed(&ax25->ax25_node)) {
70 spin_lock_bh(&ax25_list_lock);
71 hlist_del_init(&ax25->ax25_node);
72 spin_unlock_bh(&ax25_list_lock);
78 * Kill all bound sockets on a dropped device.
80 static void ax25_kill_by_device(struct net_device *dev)
84 struct hlist_node *node;
86 if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL)
89 spin_lock_bh(&ax25_list_lock);
90 ax25_for_each(s, node, &ax25_list) {
91 if (s->ax25_dev == ax25_dev) {
93 ax25_disconnect(s, ENETUNREACH);
96 spin_unlock_bh(&ax25_list_lock);
100 * Handle device status changes.
102 static int ax25_device_event(struct notifier_block *this, unsigned long event,
105 struct net_device *dev = (struct net_device *)ptr;
107 /* Reject non AX.25 devices */
108 if (dev->type != ARPHRD_AX25)
113 ax25_dev_device_up(dev);
116 ax25_kill_by_device(dev);
117 ax25_rt_device_down(dev);
118 ax25_dev_device_down(dev);
128 * Add a socket to the bound sockets list.
130 void ax25_cb_add(ax25_cb *ax25)
132 spin_lock_bh(&ax25_list_lock);
134 hlist_add_head(&ax25->ax25_node, &ax25_list);
135 spin_unlock_bh(&ax25_list_lock);
139 * Find a socket that wants to accept the SABM we have just
142 struct sock *ax25_find_listener(ax25_address *addr, int digi,
143 struct net_device *dev, int type)
146 struct hlist_node *node;
148 spin_lock_bh(&ax25_list_lock);
149 ax25_for_each(s, node, &ax25_list) {
150 if ((s->iamdigi && !digi) || (!s->iamdigi && digi))
152 if (s->sk && !ax25cmp(&s->source_addr, addr) &&
153 s->sk->sk_type == type && s->sk->sk_state == TCP_LISTEN) {
154 /* If device is null we match any device */
155 if (s->ax25_dev == NULL || s->ax25_dev->dev == dev) {
157 spin_unlock_bh(&ax25_list_lock);
162 spin_unlock_bh(&ax25_list_lock);
168 * Find an AX.25 socket given both ends.
170 struct sock *ax25_get_socket(ax25_address *my_addr, ax25_address *dest_addr,
173 struct sock *sk = NULL;
175 struct hlist_node *node;
177 spin_lock_bh(&ax25_list_lock);
178 ax25_for_each(s, node, &ax25_list) {
179 if (s->sk && !ax25cmp(&s->source_addr, my_addr) &&
180 !ax25cmp(&s->dest_addr, dest_addr) &&
181 s->sk->sk_type == type) {
188 spin_unlock_bh(&ax25_list_lock);
194 * Find an AX.25 control block given both ends. It will only pick up
195 * floating AX.25 control blocks or non Raw socket bound control blocks.
197 ax25_cb *ax25_find_cb(ax25_address *src_addr, ax25_address *dest_addr,
198 ax25_digi *digi, struct net_device *dev)
201 struct hlist_node *node;
203 spin_lock_bh(&ax25_list_lock);
204 ax25_for_each(s, node, &ax25_list) {
205 if (s->sk && s->sk->sk_type != SOCK_SEQPACKET)
207 if (s->ax25_dev == NULL)
209 if (ax25cmp(&s->source_addr, src_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->ax25_dev->dev == dev) {
210 if (digi != NULL && digi->ndigi != 0) {
211 if (s->digipeat == NULL)
213 if (ax25digicmp(s->digipeat, digi) != 0)
216 if (s->digipeat != NULL && s->digipeat->ndigi != 0)
220 spin_unlock_bh(&ax25_list_lock);
225 spin_unlock_bh(&ax25_list_lock);
230 void ax25_send_to_raw(ax25_address *addr, struct sk_buff *skb, int proto)
233 struct sk_buff *copy;
234 struct hlist_node *node;
236 spin_lock_bh(&ax25_list_lock);
237 ax25_for_each(s, node, &ax25_list) {
238 if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 &&
239 s->sk->sk_type == SOCK_RAW &&
240 s->sk->sk_protocol == proto &&
241 s->ax25_dev->dev == skb->dev &&
242 atomic_read(&s->sk->sk_rmem_alloc) <= s->sk->sk_rcvbuf) {
243 if ((copy = skb_clone(skb, GFP_ATOMIC)) == NULL)
245 if (sock_queue_rcv_skb(s->sk, copy) != 0)
249 spin_unlock_bh(&ax25_list_lock);
255 void ax25_destroy_socket(ax25_cb *);
258 * Handler for deferred kills.
260 static void ax25_destroy_timer(unsigned long data)
262 ax25_cb *ax25=(ax25_cb *)data;
269 ax25_destroy_socket(ax25);
275 * This is called from user mode and the timers. Thus it protects itself
276 * against interrupt users but doesn't worry about being called during
277 * work. Once it is removed from the queue no interrupt or bottom half
278 * will touch it and we are (fairly 8-) ) safe.
280 void ax25_destroy_socket(ax25_cb *ax25)
286 ax25_stop_heartbeat(ax25);
287 ax25_stop_t1timer(ax25);
288 ax25_stop_t2timer(ax25);
289 ax25_stop_t3timer(ax25);
290 ax25_stop_idletimer(ax25);
292 ax25_clear_queues(ax25); /* Flush the queues */
294 if (ax25->sk != NULL) {
295 while ((skb = skb_dequeue(&ax25->sk->sk_receive_queue)) != NULL) {
296 if (skb->sk != ax25->sk) {
297 /* A pending connection */
298 ax25_cb *sax25 = ax25_sk(skb->sk);
300 /* Queue the unaccepted socket for death */
301 sock_orphan(skb->sk);
303 ax25_start_heartbeat(sax25);
304 sax25->state = AX25_STATE_0;
309 skb_queue_purge(&ax25->sk->sk_write_queue);
312 if (ax25->sk != NULL) {
313 if (atomic_read(&ax25->sk->sk_wmem_alloc) ||
314 atomic_read(&ax25->sk->sk_rmem_alloc)) {
315 /* Defer: outstanding buffers */
316 init_timer(&ax25->dtimer);
317 ax25->dtimer.expires = jiffies + 2 * HZ;
318 ax25->dtimer.function = ax25_destroy_timer;
319 ax25->dtimer.data = (unsigned long)ax25;
320 add_timer(&ax25->dtimer);
322 struct sock *sk=ax25->sk;
332 * dl1bke 960311: set parameters for existing AX.25 connections,
333 * includes a KILL command to abort any connection.
334 * VERY useful for debugging ;-)
336 static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
338 struct ax25_ctl_struct ax25_ctl;
344 if (copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl)))
347 if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
350 if (ax25_ctl.digi_count > AX25_MAX_DIGIS)
353 digi.ndigi = ax25_ctl.digi_count;
354 for (k = 0; k < digi.ndigi; k++)
355 digi.calls[k] = ax25_ctl.digi_addr[k];
357 if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, &digi, ax25_dev->dev)) == NULL)
360 switch (ax25_ctl.cmd) {
362 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
363 #ifdef CONFIG_AX25_DAMA_SLAVE
364 if (ax25_dev->dama.slave && ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
367 ax25_disconnect(ax25, ENETRESET);
371 if (ax25->modulus == AX25_MODULUS) {
372 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
375 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
378 ax25->window = ax25_ctl.arg;
382 if (ax25_ctl.arg < 1)
384 ax25->rtt = (ax25_ctl.arg * HZ) / 2;
385 ax25->t1 = ax25_ctl.arg * HZ;
389 if (ax25_ctl.arg < 1)
391 ax25->t2 = ax25_ctl.arg * HZ;
395 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
398 ax25->n2 = ax25_ctl.arg;
402 if (ax25_ctl.arg < 0)
404 ax25->t3 = ax25_ctl.arg * HZ;
408 if (ax25_ctl.arg < 0)
410 ax25->idle = ax25_ctl.arg * 60 * HZ;
414 if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
416 ax25->paclen = ax25_ctl.arg;
427 * Fill in a created AX.25 created control block with the default
428 * values for a particular device.
430 void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
432 ax25->ax25_dev = ax25_dev;
434 if (ax25->ax25_dev != NULL) {
435 ax25->rtt = ax25_dev->values[AX25_VALUES_T1] / 2;
436 ax25->t1 = ax25_dev->values[AX25_VALUES_T1];
437 ax25->t2 = ax25_dev->values[AX25_VALUES_T2];
438 ax25->t3 = ax25_dev->values[AX25_VALUES_T3];
439 ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
440 ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
441 ax25->idle = ax25_dev->values[AX25_VALUES_IDLE];
442 ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
444 if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
445 ax25->modulus = AX25_EMODULUS;
446 ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
448 ax25->modulus = AX25_MODULUS;
449 ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
452 ax25->rtt = AX25_DEF_T1 / 2;
453 ax25->t1 = AX25_DEF_T1;
454 ax25->t2 = AX25_DEF_T2;
455 ax25->t3 = AX25_DEF_T3;
456 ax25->n2 = AX25_DEF_N2;
457 ax25->paclen = AX25_DEF_PACLEN;
458 ax25->idle = AX25_DEF_IDLE;
459 ax25->backoff = AX25_DEF_BACKOFF;
461 if (AX25_DEF_AXDEFMODE) {
462 ax25->modulus = AX25_EMODULUS;
463 ax25->window = AX25_DEF_EWINDOW;
465 ax25->modulus = AX25_MODULUS;
466 ax25->window = AX25_DEF_WINDOW;
472 * Create an empty AX.25 control block.
474 ax25_cb *ax25_create_cb(void)
478 if ((ax25 = kmalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
481 memset(ax25, 0x00, sizeof(*ax25));
482 atomic_set(&ax25->refcount, 1);
484 skb_queue_head_init(&ax25->write_queue);
485 skb_queue_head_init(&ax25->frag_queue);
486 skb_queue_head_init(&ax25->ack_queue);
487 skb_queue_head_init(&ax25->reseq_queue);
489 init_timer(&ax25->timer);
490 init_timer(&ax25->t1timer);
491 init_timer(&ax25->t2timer);
492 init_timer(&ax25->t3timer);
493 init_timer(&ax25->idletimer);
495 ax25_fillin_cb(ax25, NULL);
497 ax25->state = AX25_STATE_0;
503 * Handling for system calls applied via the various interfaces to an
507 static int ax25_setsockopt(struct socket *sock, int level, int optname,
508 char __user *optval, int optlen)
510 struct sock *sk = sock->sk;
512 struct net_device *dev;
513 char devname[IFNAMSIZ];
516 if (level != SOL_AX25)
519 if (optlen < sizeof(int))
522 if (get_user(opt, (int __user *)optval))
530 if (ax25->modulus == AX25_MODULUS) {
531 if (opt < 1 || opt > 7) {
536 if (opt < 1 || opt > 63) {
549 ax25->rtt = (opt * HZ) / 2;
562 if (opt < 1 || opt > 31) {
582 ax25->idle = opt * 60 * HZ;
586 if (opt < 0 || opt > 2) {
594 ax25->modulus = opt ? AX25_EMODULUS : AX25_MODULUS;
598 ax25->pidincl = opt ? 1 : 0;
602 ax25->iamdigi = opt ? 1 : 0;
606 if (opt < 16 || opt > 65535) {
613 case SO_BINDTODEVICE:
614 if (optlen > IFNAMSIZ)
616 if (copy_from_user(devname, optval, optlen)) {
621 dev = dev_get_by_name(devname);
627 if (sk->sk_type == SOCK_SEQPACKET &&
628 (sock->state != SS_UNCONNECTED ||
629 sk->sk_state == TCP_LISTEN)) {
630 res = -EADDRNOTAVAIL;
635 ax25->ax25_dev = ax25_dev_ax25dev(dev);
636 ax25_fillin_cb(ax25, ax25->ax25_dev);
647 static int ax25_getsockopt(struct socket *sock, int level, int optname,
648 char __user *optval, int __user *optlen)
650 struct sock *sk = sock->sk;
652 struct ax25_dev *ax25_dev;
653 char devname[IFNAMSIZ];
658 if (level != SOL_AX25)
661 if (get_user(maxlen, optlen))
667 valptr = (void *) &val;
668 length = min_t(unsigned int, maxlen, sizeof(int));
695 val = ax25->idle / (60 * HZ);
703 val = (ax25->modulus == AX25_EMODULUS);
718 case SO_BINDTODEVICE:
719 ax25_dev = ax25->ax25_dev;
721 if (ax25_dev != NULL && ax25_dev->dev != NULL) {
722 strlcpy(devname, ax25_dev->dev->name, sizeof(devname));
723 length = strlen(devname) + 1;
729 valptr = (void *) devname;
738 if (put_user(length, optlen))
741 return copy_to_user(optval, valptr, length) ? -EFAULT : 0;
744 static int ax25_listen(struct socket *sock, int backlog)
746 struct sock *sk = sock->sk;
750 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_LISTEN) {
751 sk->sk_max_ack_backlog = backlog;
752 sk->sk_state = TCP_LISTEN;
764 * XXX: when creating ax25_sock we should update the .obj_size setting
767 static struct proto ax25_proto = {
769 .owner = THIS_MODULE,
770 .obj_size = sizeof(struct sock),
773 static int ax25_create(struct socket *sock, int protocol)
778 switch (sock->type) {
780 if (protocol == 0 || protocol == PF_AX25)
781 protocol = AX25_P_TEXT;
787 case PF_AX25: /* For CLX */
788 protocol = AX25_P_TEXT;
801 return -ESOCKTNOSUPPORT;
802 #ifdef CONFIG_NETROM_MODULE
804 if (ax25_protocol_is_registered(AX25_P_NETROM))
805 return -ESOCKTNOSUPPORT;
807 #ifdef CONFIG_ROSE_MODULE
809 if (ax25_protocol_is_registered(AX25_P_ROSE))
810 return -ESOCKTNOSUPPORT;
820 return -ESOCKTNOSUPPORT;
823 if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, &ax25_proto, 1)) == NULL)
826 ax25 = sk->sk_protinfo = ax25_create_cb();
832 sock_init_data(sock, sk);
834 sk->sk_destruct = ax25_free_sock;
835 sock->ops = &ax25_proto_ops;
836 sk->sk_protocol = protocol;
843 struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
846 ax25_cb *ax25, *oax25;
848 if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, osk->sk_prot, 1)) == NULL)
851 if ((ax25 = ax25_create_cb()) == NULL) {
856 switch (osk->sk_type) {
867 sock_init_data(NULL, sk);
869 sk->sk_destruct = ax25_free_sock;
870 sk->sk_type = osk->sk_type;
871 sk->sk_socket = osk->sk_socket;
872 sk->sk_priority = osk->sk_priority;
873 sk->sk_protocol = osk->sk_protocol;
874 sk->sk_rcvbuf = osk->sk_rcvbuf;
875 sk->sk_sndbuf = osk->sk_sndbuf;
876 sk->sk_state = TCP_ESTABLISHED;
877 sk->sk_sleep = osk->sk_sleep;
878 sock_copy_flags(sk, osk);
880 oax25 = ax25_sk(osk);
882 ax25->modulus = oax25->modulus;
883 ax25->backoff = oax25->backoff;
884 ax25->pidincl = oax25->pidincl;
885 ax25->iamdigi = oax25->iamdigi;
886 ax25->rtt = oax25->rtt;
887 ax25->t1 = oax25->t1;
888 ax25->t2 = oax25->t2;
889 ax25->t3 = oax25->t3;
890 ax25->n2 = oax25->n2;
891 ax25->idle = oax25->idle;
892 ax25->paclen = oax25->paclen;
893 ax25->window = oax25->window;
895 ax25->ax25_dev = ax25_dev;
896 ax25->source_addr = oax25->source_addr;
898 if (oax25->digipeat != NULL) {
899 if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
905 memcpy(ax25->digipeat, oax25->digipeat, sizeof(ax25_digi));
908 sk->sk_protinfo = ax25;
914 static int ax25_release(struct socket *sock)
916 struct sock *sk = sock->sk;
927 if (sk->sk_type == SOCK_SEQPACKET) {
928 switch (ax25->state) {
931 ax25_disconnect(ax25, 0);
933 ax25_destroy_socket(ax25);
938 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
940 ax25_disconnect(ax25, 0);
942 ax25_destroy_socket(ax25);
947 ax25_clear_queues(ax25);
950 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
951 case AX25_PROTO_STD_SIMPLEX:
952 case AX25_PROTO_STD_DUPLEX:
953 ax25_send_control(ax25,
957 ax25_stop_t2timer(ax25);
958 ax25_stop_t3timer(ax25);
959 ax25_stop_idletimer(ax25);
961 #ifdef CONFIG_AX25_DAMA_SLAVE
962 case AX25_PROTO_DAMA_SLAVE:
963 ax25_stop_t3timer(ax25);
964 ax25_stop_idletimer(ax25);
968 ax25_calculate_t1(ax25);
969 ax25_start_t1timer(ax25);
970 ax25->state = AX25_STATE_2;
971 sk->sk_state = TCP_CLOSE;
972 sk->sk_shutdown |= SEND_SHUTDOWN;
973 sk->sk_state_change(sk);
974 sock_set_flag(sk, SOCK_DESTROY);
981 sk->sk_state = TCP_CLOSE;
982 sk->sk_shutdown |= SEND_SHUTDOWN;
983 sk->sk_state_change(sk);
984 ax25_destroy_socket(ax25);
995 * We support a funny extension here so you can (as root) give any callsign
996 * digipeated via a local address as source. This hack is obsolete now
997 * that we've implemented support for SO_BINDTODEVICE. It is however small
998 * and trivially backward compatible.
1000 static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
1002 struct sock *sk = sock->sk;
1003 struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
1004 ax25_dev *ax25_dev = NULL;
1005 ax25_uid_assoc *user;
1010 if (addr_len != sizeof(struct sockaddr_ax25) &&
1011 addr_len != sizeof(struct full_sockaddr_ax25)) {
1012 /* support for old structure may go away some time */
1013 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1014 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1018 printk(KERN_WARNING "ax25_bind(): %s uses old (6 digipeater) socket structure.\n",
1022 if (addr->fsa_ax25.sax25_family != AF_AX25)
1025 user = ax25_findbyuid(current->euid);
1030 if (ax25_uid_policy && !capable(CAP_NET_ADMIN))
1033 call = addr->fsa_ax25.sax25_call;
1039 if (!sock_flag(sk, SOCK_ZAPPED)) {
1044 ax25->source_addr = call;
1047 * User already set interface with SO_BINDTODEVICE
1049 if (ax25->ax25_dev != NULL)
1052 if (addr_len > sizeof(struct sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
1053 if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) != 0 &&
1054 (ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL) {
1055 err = -EADDRNOTAVAIL;
1059 if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL) {
1060 err = -EADDRNOTAVAIL;
1065 if (ax25_dev != NULL)
1066 ax25_fillin_cb(ax25, ax25_dev);
1070 sock_reset_flag(sk, SOCK_ZAPPED);
1079 * FIXME: nonblock behaviour looks like it may have a bug.
1081 static int ax25_connect(struct socket *sock, struct sockaddr *uaddr,
1082 int addr_len, int flags)
1084 struct sock *sk = sock->sk;
1085 ax25_cb *ax25 = ax25_sk(sk), *ax25t;
1086 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1087 ax25_digi *digi = NULL;
1088 int ct = 0, err = 0;
1091 * some sanity checks. code further down depends on this
1094 if (addr_len == sizeof(struct sockaddr_ax25)) {
1095 /* support for this will go away in early 2.5.x */
1096 printk(KERN_WARNING "ax25_connect(): %s uses obsolete socket structure\n",
1099 else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
1100 /* support for old structure may go away some time */
1101 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1102 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1106 printk(KERN_WARNING "ax25_connect(): %s uses old (6 digipeater) socket structure.\n",
1110 if (fsa->fsa_ax25.sax25_family != AF_AX25)
1115 /* deal with restarts */
1116 if (sock->state == SS_CONNECTING) {
1117 switch (sk->sk_state) {
1118 case TCP_SYN_SENT: /* still trying */
1122 case TCP_ESTABLISHED: /* connection established */
1123 sock->state = SS_CONNECTED;
1126 case TCP_CLOSE: /* connection refused */
1127 sock->state = SS_UNCONNECTED;
1128 err = -ECONNREFUSED;
1133 if (sk->sk_state == TCP_ESTABLISHED && sk->sk_type == SOCK_SEQPACKET) {
1134 err = -EISCONN; /* No reconnect on a seqpacket socket */
1138 sk->sk_state = TCP_CLOSE;
1139 sock->state = SS_UNCONNECTED;
1141 if (ax25->digipeat != NULL) {
1142 kfree(ax25->digipeat);
1143 ax25->digipeat = NULL;
1147 * Handle digi-peaters to be used.
1149 if (addr_len > sizeof(struct sockaddr_ax25) &&
1150 fsa->fsa_ax25.sax25_ndigis != 0) {
1151 /* Valid number of digipeaters ? */
1152 if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS) {
1157 if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL) {
1162 digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
1163 digi->lastrepeat = -1;
1165 while (ct < fsa->fsa_ax25.sax25_ndigis) {
1166 if ((fsa->fsa_digipeater[ct].ax25_call[6] &
1167 AX25_HBIT) && ax25->iamdigi) {
1168 digi->repeated[ct] = 1;
1169 digi->lastrepeat = ct;
1171 digi->repeated[ct] = 0;
1173 digi->calls[ct] = fsa->fsa_digipeater[ct];
1179 * Must bind first - autobinding in this may or may not work. If
1180 * the socket is already bound, check to see if the device has
1181 * been filled in, error if it hasn't.
1183 if (sock_flag(sk, SOCK_ZAPPED)) {
1184 /* check if we can remove this feature. It is broken. */
1185 printk(KERN_WARNING "ax25_connect(): %s uses autobind, please contact jreuter@yaina.de\n",
1187 if ((err = ax25_rt_autobind(ax25, &fsa->fsa_ax25.sax25_call)) < 0) {
1192 ax25_fillin_cb(ax25, ax25->ax25_dev);
1195 if (ax25->ax25_dev == NULL) {
1197 err = -EHOSTUNREACH;
1202 if (sk->sk_type == SOCK_SEQPACKET &&
1203 (ax25t=ax25_find_cb(&ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi,
1204 ax25->ax25_dev->dev))) {
1206 err = -EADDRINUSE; /* Already such a connection */
1211 ax25->dest_addr = fsa->fsa_ax25.sax25_call;
1212 ax25->digipeat = digi;
1214 /* First the easy one */
1215 if (sk->sk_type != SOCK_SEQPACKET) {
1216 sock->state = SS_CONNECTED;
1217 sk->sk_state = TCP_ESTABLISHED;
1221 /* Move to connecting socket, ax.25 lapb WAIT_UA.. */
1222 sock->state = SS_CONNECTING;
1223 sk->sk_state = TCP_SYN_SENT;
1225 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
1226 case AX25_PROTO_STD_SIMPLEX:
1227 case AX25_PROTO_STD_DUPLEX:
1228 ax25_std_establish_data_link(ax25);
1231 #ifdef CONFIG_AX25_DAMA_SLAVE
1232 case AX25_PROTO_DAMA_SLAVE:
1233 ax25->modulus = AX25_MODULUS;
1234 ax25->window = ax25->ax25_dev->values[AX25_VALUES_WINDOW];
1235 if (ax25->ax25_dev->dama.slave)
1236 ax25_ds_establish_data_link(ax25);
1238 ax25_std_establish_data_link(ax25);
1243 ax25->state = AX25_STATE_1;
1245 ax25_start_heartbeat(ax25);
1248 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
1253 if (sk->sk_state == TCP_SYN_SENT) {
1254 struct task_struct *tsk = current;
1255 DECLARE_WAITQUEUE(wait, tsk);
1257 add_wait_queue(sk->sk_sleep, &wait);
1259 if (sk->sk_state != TCP_SYN_SENT)
1261 set_current_state(TASK_INTERRUPTIBLE);
1263 if (!signal_pending(tsk)) {
1268 current->state = TASK_RUNNING;
1269 remove_wait_queue(sk->sk_sleep, &wait);
1270 return -ERESTARTSYS;
1272 current->state = TASK_RUNNING;
1273 remove_wait_queue(sk->sk_sleep, &wait);
1276 if (sk->sk_state != TCP_ESTABLISHED) {
1277 /* Not in ABM, not in WAIT_UA -> failed */
1278 sock->state = SS_UNCONNECTED;
1279 err = sock_error(sk); /* Always set at this point */
1283 sock->state = SS_CONNECTED;
1293 static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
1295 struct task_struct *tsk = current;
1296 DECLARE_WAITQUEUE(wait, tsk);
1297 struct sk_buff *skb;
1302 if (sock->state != SS_UNCONNECTED)
1305 if ((sk = sock->sk) == NULL)
1309 if (sk->sk_type != SOCK_SEQPACKET) {
1314 if (sk->sk_state != TCP_LISTEN) {
1320 * The read queue this time is holding sockets ready to use
1321 * hooked into the SABM we saved
1323 add_wait_queue(sk->sk_sleep, &wait);
1325 skb = skb_dequeue(&sk->sk_receive_queue);
1330 current->state = TASK_INTERRUPTIBLE;
1331 if (flags & O_NONBLOCK) {
1332 current->state = TASK_RUNNING;
1333 remove_wait_queue(sk->sk_sleep, &wait);
1334 return -EWOULDBLOCK;
1336 if (!signal_pending(tsk)) {
1341 current->state = TASK_RUNNING;
1342 remove_wait_queue(sk->sk_sleep, &wait);
1343 return -ERESTARTSYS;
1345 current->state = TASK_RUNNING;
1346 remove_wait_queue(sk->sk_sleep, &wait);
1349 newsk->sk_socket = newsock;
1350 newsk->sk_sleep = &newsock->wait;
1352 /* Now attach up the new socket */
1354 sk->sk_ack_backlog--;
1355 newsock->sk = newsk;
1356 newsock->state = SS_CONNECTED;
1364 static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
1365 int *uaddr_len, int peer)
1367 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1368 struct sock *sk = sock->sk;
1369 unsigned char ndigi, i;
1377 if (sk->sk_state != TCP_ESTABLISHED) {
1382 fsa->fsa_ax25.sax25_family = AF_AX25;
1383 fsa->fsa_ax25.sax25_call = ax25->dest_addr;
1384 fsa->fsa_ax25.sax25_ndigis = 0;
1386 if (ax25->digipeat != NULL) {
1387 ndigi = ax25->digipeat->ndigi;
1388 fsa->fsa_ax25.sax25_ndigis = ndigi;
1389 for (i = 0; i < ndigi; i++)
1390 fsa->fsa_digipeater[i] =
1391 ax25->digipeat->calls[i];
1394 fsa->fsa_ax25.sax25_family = AF_AX25;
1395 fsa->fsa_ax25.sax25_call = ax25->source_addr;
1396 fsa->fsa_ax25.sax25_ndigis = 1;
1397 if (ax25->ax25_dev != NULL) {
1398 memcpy(&fsa->fsa_digipeater[0],
1399 ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
1401 fsa->fsa_digipeater[0] = null_ax25_address;
1404 *uaddr_len = sizeof (struct full_sockaddr_ax25);
1412 static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
1413 struct msghdr *msg, size_t len)
1415 struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
1416 struct sock *sk = sock->sk;
1417 struct sockaddr_ax25 sax;
1418 struct sk_buff *skb;
1419 ax25_digi dtmp, *dp;
1420 unsigned char *asmptr;
1423 int lv, err, addr_len = msg->msg_namelen;
1425 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1431 if (sock_flag(sk, SOCK_ZAPPED)) {
1432 err = -EADDRNOTAVAIL;
1436 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1437 send_sig(SIGPIPE, current, 0);
1442 if (ax25->ax25_dev == NULL) {
1447 if (len > ax25->ax25_dev->dev->mtu) {
1453 if (usax->sax25_family != AF_AX25) {
1458 if (addr_len == sizeof(struct sockaddr_ax25)) {
1459 printk(KERN_WARNING "ax25_sendmsg(): %s uses obsolete socket structure\n",
1462 else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
1463 /* support for old structure may go away some time */
1464 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1465 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1470 printk(KERN_WARNING "ax25_sendmsg(): %s uses old (6 digipeater) socket structure.\n",
1474 if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
1476 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)usax;
1478 /* Valid number of digipeaters ? */
1479 if (usax->sax25_ndigis < 1 || usax->sax25_ndigis > AX25_MAX_DIGIS) {
1484 dtmp.ndigi = usax->sax25_ndigis;
1486 while (ct < usax->sax25_ndigis) {
1487 dtmp.repeated[ct] = 0;
1488 dtmp.calls[ct] = fsa->fsa_digipeater[ct];
1492 dtmp.lastrepeat = 0;
1496 if (sk->sk_type == SOCK_SEQPACKET &&
1497 ax25cmp(&ax25->dest_addr, &sax.sax25_call)) {
1501 if (usax->sax25_ndigis == 0)
1507 * FIXME: 1003.1g - if the socket is like this because
1508 * it has become closed (not started closed) and is VC
1509 * we ought to SIGPIPE, EPIPE
1511 if (sk->sk_state != TCP_ESTABLISHED) {
1515 sax.sax25_family = AF_AX25;
1516 sax.sax25_call = ax25->dest_addr;
1517 dp = ax25->digipeat;
1520 SOCK_DEBUG(sk, "AX.25: sendto: Addresses built.\n");
1522 /* Build a packet */
1523 SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n");
1525 /* Assume the worst case */
1526 size = len + ax25->ax25_dev->dev->hard_header_len;
1528 skb = sock_alloc_send_skb(sk, size, msg->msg_flags&MSG_DONTWAIT, &err);
1532 skb_reserve(skb, size - len);
1534 SOCK_DEBUG(sk, "AX.25: Appending user data\n");
1536 /* User data follows immediately after the AX.25 data */
1537 if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
1543 skb->nh.raw = skb->data;
1545 /* Add the PID if one is not supplied by the user in the skb */
1546 if (!ax25->pidincl) {
1547 asmptr = skb_push(skb, 1);
1548 *asmptr = sk->sk_protocol;
1551 SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
1553 if (sk->sk_type == SOCK_SEQPACKET) {
1554 /* Connected mode sockets go via the LAPB machine */
1555 if (sk->sk_state != TCP_ESTABLISHED) {
1561 /* Shove it onto the queue and kick */
1562 ax25_output(ax25, ax25->paclen, skb);
1568 asmptr = skb_push(skb, 1 + ax25_addr_size(dp));
1570 SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
1573 SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
1575 /* Build an AX.25 header */
1576 asmptr += (lv = ax25_addr_build(asmptr, &ax25->source_addr,
1577 &sax.sax25_call, dp,
1578 AX25_COMMAND, AX25_MODULUS));
1580 SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
1582 skb->h.raw = asmptr;
1584 SOCK_DEBUG(sk, "base=%p pos=%p\n", skb->data, asmptr);
1588 /* Datagram frames go straight out of the door as UI */
1589 ax25_queue_xmit(skb, ax25->ax25_dev->dev);
1599 static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
1600 struct msghdr *msg, size_t size, int flags)
1602 struct sock *sk = sock->sk;
1603 struct sk_buff *skb;
1609 * This works for seqpacket too. The receiver has ordered the
1610 * queue for us! We do one quick check first though
1612 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_ESTABLISHED) {
1617 /* Now we can treat all alike */
1618 skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
1619 flags & MSG_DONTWAIT, &err);
1623 if (!ax25_sk(sk)->pidincl)
1624 skb_pull(skb, 1); /* Remove PID */
1626 skb->h.raw = skb->data;
1629 if (copied > size) {
1631 msg->msg_flags |= MSG_TRUNC;
1634 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1636 if (msg->msg_namelen != 0) {
1637 struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
1641 ax25_addr_parse(skb->mac.raw+1, skb->data-skb->mac.raw-1, &src, NULL, &digi, NULL, NULL);
1643 sax->sax25_family = AF_AX25;
1644 /* We set this correctly, even though we may not let the
1645 application know the digi calls further down (because it
1646 did NOT ask to know them). This could get political... **/
1647 sax->sax25_ndigis = digi.ndigi;
1648 sax->sax25_call = src;
1650 if (sax->sax25_ndigis != 0) {
1652 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)sax;
1654 for (ct = 0; ct < digi.ndigi; ct++)
1655 fsa->fsa_digipeater[ct] = digi.calls[ct];
1657 msg->msg_namelen = sizeof(struct full_sockaddr_ax25);
1660 skb_free_datagram(sk, skb);
1669 static int ax25_shutdown(struct socket *sk, int how)
1671 /* FIXME - generate DM and RNR states */
1675 static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1677 struct sock *sk = sock->sk;
1678 void __user *argp = (void __user *)arg;
1685 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
1688 res = put_user(amount, (int __user *)argp);
1693 struct sk_buff *skb;
1695 /* These two are safe on a single CPU system as only user tasks fiddle here */
1696 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1698 res = put_user(amount, (int __user *)argp);
1704 res = sock_get_timestamp(sk, argp);
1710 case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
1711 case SIOCAX25DELUID: /* Delete a uid from the uid/call map table */
1712 case SIOCAX25GETUID: {
1713 struct sockaddr_ax25 sax25;
1714 if (copy_from_user(&sax25, argp, sizeof(sax25))) {
1718 res = ax25_uid_ioctl(cmd, &sax25);
1722 case SIOCAX25NOUID: { /* Set the default policy (default/bar) */
1724 if (!capable(CAP_NET_ADMIN)) {
1728 if (get_user(amount, (long __user *)argp)) {
1732 if (amount > AX25_NOUID_BLOCK) {
1736 ax25_uid_policy = amount;
1744 if (!capable(CAP_NET_ADMIN)) {
1748 res = ax25_rt_ioctl(cmd, argp);
1751 case SIOCAX25CTLCON:
1752 if (!capable(CAP_NET_ADMIN)) {
1756 res = ax25_ctl_ioctl(cmd, argp);
1759 case SIOCAX25GETINFO:
1760 case SIOCAX25GETINFOOLD: {
1761 ax25_cb *ax25 = ax25_sk(sk);
1762 struct ax25_info_struct ax25_info;
1764 ax25_info.t1 = ax25->t1 / HZ;
1765 ax25_info.t2 = ax25->t2 / HZ;
1766 ax25_info.t3 = ax25->t3 / HZ;
1767 ax25_info.idle = ax25->idle / (60 * HZ);
1768 ax25_info.n2 = ax25->n2;
1769 ax25_info.t1timer = ax25_display_timer(&ax25->t1timer) / HZ;
1770 ax25_info.t2timer = ax25_display_timer(&ax25->t2timer) / HZ;
1771 ax25_info.t3timer = ax25_display_timer(&ax25->t3timer) / HZ;
1772 ax25_info.idletimer = ax25_display_timer(&ax25->idletimer) / (60 * HZ);
1773 ax25_info.n2count = ax25->n2count;
1774 ax25_info.state = ax25->state;
1775 ax25_info.rcv_q = atomic_read(&sk->sk_rmem_alloc);
1776 ax25_info.snd_q = atomic_read(&sk->sk_wmem_alloc);
1777 ax25_info.vs = ax25->vs;
1778 ax25_info.vr = ax25->vr;
1779 ax25_info.va = ax25->va;
1780 ax25_info.vs_max = ax25->vs; /* reserved */
1781 ax25_info.paclen = ax25->paclen;
1782 ax25_info.window = ax25->window;
1784 /* old structure? */
1785 if (cmd == SIOCAX25GETINFOOLD) {
1786 static int warned = 0;
1788 printk(KERN_INFO "%s uses old SIOCAX25GETINFO\n",
1793 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct_deprecated))) {
1798 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct))) {
1807 case SIOCAX25ADDFWD:
1808 case SIOCAX25DELFWD: {
1809 struct ax25_fwd_struct ax25_fwd;
1810 if (!capable(CAP_NET_ADMIN)) {
1814 if (copy_from_user(&ax25_fwd, argp, sizeof(ax25_fwd))) {
1818 res = ax25_fwd_ioctl(cmd, &ax25_fwd);
1824 case SIOCGIFDSTADDR:
1825 case SIOCSIFDSTADDR:
1826 case SIOCGIFBRDADDR:
1827 case SIOCSIFBRDADDR:
1828 case SIOCGIFNETMASK:
1829 case SIOCSIFNETMASK:
1836 res = dev_ioctl(cmd, argp);
1844 #ifdef CONFIG_PROC_FS
1846 static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
1848 struct ax25_cb *ax25;
1849 struct hlist_node *node;
1852 spin_lock_bh(&ax25_list_lock);
1853 ax25_for_each(ax25, node, &ax25_list) {
1861 static void *ax25_info_next(struct seq_file *seq, void *v, loff_t *pos)
1865 return hlist_entry( ((struct ax25_cb *)v)->ax25_node.next,
1866 struct ax25_cb, ax25_node);
1869 static void ax25_info_stop(struct seq_file *seq, void *v)
1871 spin_unlock_bh(&ax25_list_lock);
1874 static int ax25_info_show(struct seq_file *seq, void *v)
1882 * magic dev src_addr dest_addr,digi1,digi2,.. st vs vr va t1 t1 t2 t2 t3 t3 idle idle n2 n2 rtt window paclen Snd-Q Rcv-Q inode
1885 seq_printf(seq, "%8.8lx %s %s%s ",
1887 ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
1888 ax2asc(&ax25->source_addr),
1889 ax25->iamdigi? "*":"");
1890 seq_printf(seq, "%s", ax2asc(&ax25->dest_addr));
1892 for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
1893 seq_printf(seq, ",%s%s",
1894 ax2asc(&ax25->digipeat->calls[k]),
1895 ax25->digipeat->repeated[k]? "*":"");
1898 seq_printf(seq, " %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %d %d",
1900 ax25->vs, ax25->vr, ax25->va,
1901 ax25_display_timer(&ax25->t1timer) / HZ, ax25->t1 / HZ,
1902 ax25_display_timer(&ax25->t2timer) / HZ, ax25->t2 / HZ,
1903 ax25_display_timer(&ax25->t3timer) / HZ, ax25->t3 / HZ,
1904 ax25_display_timer(&ax25->idletimer) / (60 * HZ),
1905 ax25->idle / (60 * HZ),
1906 ax25->n2count, ax25->n2,
1911 if (ax25->sk != NULL) {
1912 bh_lock_sock(ax25->sk);
1913 seq_printf(seq," %d %d %ld\n",
1914 atomic_read(&ax25->sk->sk_wmem_alloc),
1915 atomic_read(&ax25->sk->sk_rmem_alloc),
1916 ax25->sk->sk_socket != NULL ? SOCK_INODE(ax25->sk->sk_socket)->i_ino : 0L);
1917 bh_unlock_sock(ax25->sk);
1919 seq_puts(seq, " * * *\n");
1924 static struct seq_operations ax25_info_seqops = {
1925 .start = ax25_info_start,
1926 .next = ax25_info_next,
1927 .stop = ax25_info_stop,
1928 .show = ax25_info_show,
1931 static int ax25_info_open(struct inode *inode, struct file *file)
1933 return seq_open(file, &ax25_info_seqops);
1936 static struct file_operations ax25_info_fops = {
1937 .owner = THIS_MODULE,
1938 .open = ax25_info_open,
1940 .llseek = seq_lseek,
1941 .release = seq_release,
1946 static struct net_proto_family ax25_family_ops = {
1948 .create = ax25_create,
1949 .owner = THIS_MODULE,
1952 static struct proto_ops ax25_proto_ops = {
1954 .owner = THIS_MODULE,
1955 .release = ax25_release,
1957 .connect = ax25_connect,
1958 .socketpair = sock_no_socketpair,
1959 .accept = ax25_accept,
1960 .getname = ax25_getname,
1961 .poll = datagram_poll,
1962 .ioctl = ax25_ioctl,
1963 .listen = ax25_listen,
1964 .shutdown = ax25_shutdown,
1965 .setsockopt = ax25_setsockopt,
1966 .getsockopt = ax25_getsockopt,
1967 .sendmsg = ax25_sendmsg,
1968 .recvmsg = ax25_recvmsg,
1969 .mmap = sock_no_mmap,
1970 .sendpage = sock_no_sendpage,
1974 * Called by socket.c on kernel start up
1976 static struct packet_type ax25_packet_type = {
1977 .type = __constant_htons(ETH_P_AX25),
1978 .dev = NULL, /* All devices */
1979 .func = ax25_kiss_rcv,
1982 static struct notifier_block ax25_dev_notifier = {
1983 .notifier_call =ax25_device_event,
1986 EXPORT_SYMBOL(ax25_encapsulate);
1987 EXPORT_SYMBOL(ax25_rebuild_header);
1988 EXPORT_SYMBOL(ax25_findbyuid);
1989 EXPORT_SYMBOL(ax25_find_cb);
1990 EXPORT_SYMBOL(ax25_linkfail_register);
1991 EXPORT_SYMBOL(ax25_linkfail_release);
1992 EXPORT_SYMBOL(ax25_listen_register);
1993 EXPORT_SYMBOL(ax25_listen_release);
1994 EXPORT_SYMBOL(ax25_protocol_register);
1995 EXPORT_SYMBOL(ax25_protocol_release);
1996 EXPORT_SYMBOL(ax25_send_frame);
1997 EXPORT_SYMBOL(ax25_uid_policy);
1998 EXPORT_SYMBOL(ax25cmp);
1999 EXPORT_SYMBOL(ax2asc);
2000 EXPORT_SYMBOL(asc2ax);
2001 EXPORT_SYMBOL(null_ax25_address);
2002 EXPORT_SYMBOL(ax25_display_timer);
2004 static int __init ax25_init(void)
2006 int rc = proto_register(&ax25_proto, 0);
2011 sock_register(&ax25_family_ops);
2012 dev_add_pack(&ax25_packet_type);
2013 register_netdevice_notifier(&ax25_dev_notifier);
2014 ax25_register_sysctl();
2016 proc_net_fops_create("ax25_route", S_IRUGO, &ax25_route_fops);
2017 proc_net_fops_create("ax25", S_IRUGO, &ax25_info_fops);
2018 proc_net_fops_create("ax25_calls", S_IRUGO, &ax25_uid_fops);
2022 module_init(ax25_init);
2025 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
2026 MODULE_DESCRIPTION("The amateur radio AX.25 link layer protocol");
2027 MODULE_LICENSE("GPL");
2028 MODULE_ALIAS_NETPROTO(PF_AX25);
2030 static void __exit ax25_exit(void)
2032 proc_net_remove("ax25_route");
2033 proc_net_remove("ax25");
2034 proc_net_remove("ax25_calls");
2039 ax25_unregister_sysctl();
2040 unregister_netdevice_notifier(&ax25_dev_notifier);
2042 dev_remove_pack(&ax25_packet_type);
2044 sock_unregister(PF_AX25);
2045 proto_unregister(&ax25_proto);
2047 module_exit(ax25_exit);