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/capability.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/sockios.h>
27 #include <linux/net.h>
29 #include <linux/inet.h>
30 #include <linux/netdevice.h>
31 #include <linux/if_arp.h>
32 #include <linux/skbuff.h>
34 #include <asm/uaccess.h>
35 #include <asm/system.h>
36 #include <linux/fcntl.h>
37 #include <linux/termios.h> /* For TIOCINQ/OUTQ */
39 #include <linux/interrupt.h>
40 #include <linux/notifier.h>
41 #include <linux/proc_fs.h>
42 #include <linux/stat.h>
43 #include <linux/netfilter.h>
44 #include <linux/sysctl.h>
45 #include <linux/init.h>
46 #include <linux/spinlock.h>
47 #include <net/net_namespace.h>
48 #include <net/tcp_states.h>
54 HLIST_HEAD(ax25_list);
55 DEFINE_SPINLOCK(ax25_list_lock);
57 static const 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);
91 ax25_for_each(s, node, &ax25_list) {
92 if (s->ax25_dev == ax25_dev) {
94 spin_unlock_bh(&ax25_list_lock);
95 ax25_disconnect(s, ENETUNREACH);
96 spin_lock_bh(&ax25_list_lock);
98 /* The entry could have been deleted from the
99 * list meanwhile and thus the next pointer is
100 * no longer valid. Play it safe and restart
101 * the scan. Forward progress is ensured
102 * because we set s->ax25_dev to NULL and we
103 * are never passed a NULL 'dev' argument.
108 spin_unlock_bh(&ax25_list_lock);
112 * Handle device status changes.
114 static int ax25_device_event(struct notifier_block *this, unsigned long event,
117 struct net_device *dev = (struct net_device *)ptr;
119 if (dev->nd_net != &init_net)
122 /* Reject non AX.25 devices */
123 if (dev->type != ARPHRD_AX25)
128 ax25_dev_device_up(dev);
131 ax25_kill_by_device(dev);
132 ax25_rt_device_down(dev);
133 ax25_dev_device_down(dev);
143 * Add a socket to the bound sockets list.
145 void ax25_cb_add(ax25_cb *ax25)
147 spin_lock_bh(&ax25_list_lock);
149 hlist_add_head(&ax25->ax25_node, &ax25_list);
150 spin_unlock_bh(&ax25_list_lock);
154 * Find a socket that wants to accept the SABM we have just
157 struct sock *ax25_find_listener(ax25_address *addr, int digi,
158 struct net_device *dev, int type)
161 struct hlist_node *node;
163 spin_lock(&ax25_list_lock);
164 ax25_for_each(s, node, &ax25_list) {
165 if ((s->iamdigi && !digi) || (!s->iamdigi && digi))
167 if (s->sk && !ax25cmp(&s->source_addr, addr) &&
168 s->sk->sk_type == type && s->sk->sk_state == TCP_LISTEN) {
169 /* If device is null we match any device */
170 if (s->ax25_dev == NULL || s->ax25_dev->dev == dev) {
172 spin_unlock(&ax25_list_lock);
177 spin_unlock(&ax25_list_lock);
183 * Find an AX.25 socket given both ends.
185 struct sock *ax25_get_socket(ax25_address *my_addr, ax25_address *dest_addr,
188 struct sock *sk = NULL;
190 struct hlist_node *node;
192 spin_lock(&ax25_list_lock);
193 ax25_for_each(s, node, &ax25_list) {
194 if (s->sk && !ax25cmp(&s->source_addr, my_addr) &&
195 !ax25cmp(&s->dest_addr, dest_addr) &&
196 s->sk->sk_type == type) {
203 spin_unlock(&ax25_list_lock);
209 * Find an AX.25 control block given both ends. It will only pick up
210 * floating AX.25 control blocks or non Raw socket bound control blocks.
212 ax25_cb *ax25_find_cb(ax25_address *src_addr, ax25_address *dest_addr,
213 ax25_digi *digi, struct net_device *dev)
216 struct hlist_node *node;
218 spin_lock_bh(&ax25_list_lock);
219 ax25_for_each(s, node, &ax25_list) {
220 if (s->sk && s->sk->sk_type != SOCK_SEQPACKET)
222 if (s->ax25_dev == NULL)
224 if (ax25cmp(&s->source_addr, src_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->ax25_dev->dev == dev) {
225 if (digi != NULL && digi->ndigi != 0) {
226 if (s->digipeat == NULL)
228 if (ax25digicmp(s->digipeat, digi) != 0)
231 if (s->digipeat != NULL && s->digipeat->ndigi != 0)
235 spin_unlock_bh(&ax25_list_lock);
240 spin_unlock_bh(&ax25_list_lock);
245 EXPORT_SYMBOL(ax25_find_cb);
247 void ax25_send_to_raw(ax25_address *addr, struct sk_buff *skb, int proto)
250 struct sk_buff *copy;
251 struct hlist_node *node;
253 spin_lock(&ax25_list_lock);
254 ax25_for_each(s, node, &ax25_list) {
255 if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 &&
256 s->sk->sk_type == SOCK_RAW &&
257 s->sk->sk_protocol == proto &&
258 s->ax25_dev->dev == skb->dev &&
259 atomic_read(&s->sk->sk_rmem_alloc) <= s->sk->sk_rcvbuf) {
260 if ((copy = skb_clone(skb, GFP_ATOMIC)) == NULL)
262 if (sock_queue_rcv_skb(s->sk, copy) != 0)
266 spin_unlock(&ax25_list_lock);
272 void ax25_destroy_socket(ax25_cb *);
275 * Handler for deferred kills.
277 static void ax25_destroy_timer(unsigned long data)
279 ax25_cb *ax25=(ax25_cb *)data;
286 ax25_destroy_socket(ax25);
292 * This is called from user mode and the timers. Thus it protects itself
293 * against interrupt users but doesn't worry about being called during
294 * work. Once it is removed from the queue no interrupt or bottom half
295 * will touch it and we are (fairly 8-) ) safe.
297 void ax25_destroy_socket(ax25_cb *ax25)
303 ax25_stop_heartbeat(ax25);
304 ax25_stop_t1timer(ax25);
305 ax25_stop_t2timer(ax25);
306 ax25_stop_t3timer(ax25);
307 ax25_stop_idletimer(ax25);
309 ax25_clear_queues(ax25); /* Flush the queues */
311 if (ax25->sk != NULL) {
312 while ((skb = skb_dequeue(&ax25->sk->sk_receive_queue)) != NULL) {
313 if (skb->sk != ax25->sk) {
314 /* A pending connection */
315 ax25_cb *sax25 = ax25_sk(skb->sk);
317 /* Queue the unaccepted socket for death */
318 sock_orphan(skb->sk);
320 ax25_start_heartbeat(sax25);
321 sax25->state = AX25_STATE_0;
326 skb_queue_purge(&ax25->sk->sk_write_queue);
329 if (ax25->sk != NULL) {
330 if (atomic_read(&ax25->sk->sk_wmem_alloc) ||
331 atomic_read(&ax25->sk->sk_rmem_alloc)) {
332 /* Defer: outstanding buffers */
333 init_timer(&ax25->dtimer);
334 ax25->dtimer.expires = jiffies + 2 * HZ;
335 ax25->dtimer.function = ax25_destroy_timer;
336 ax25->dtimer.data = (unsigned long)ax25;
337 add_timer(&ax25->dtimer);
339 struct sock *sk=ax25->sk;
349 * dl1bke 960311: set parameters for existing AX.25 connections,
350 * includes a KILL command to abort any connection.
351 * VERY useful for debugging ;-)
353 static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
355 struct ax25_ctl_struct ax25_ctl;
361 if (copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl)))
364 if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
367 if (ax25_ctl.digi_count > AX25_MAX_DIGIS)
370 digi.ndigi = ax25_ctl.digi_count;
371 for (k = 0; k < digi.ndigi; k++)
372 digi.calls[k] = ax25_ctl.digi_addr[k];
374 if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, &digi, ax25_dev->dev)) == NULL)
377 switch (ax25_ctl.cmd) {
379 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
380 #ifdef CONFIG_AX25_DAMA_SLAVE
381 if (ax25_dev->dama.slave && ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
384 ax25_disconnect(ax25, ENETRESET);
388 if (ax25->modulus == AX25_MODULUS) {
389 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
392 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
395 ax25->window = ax25_ctl.arg;
399 if (ax25_ctl.arg < 1)
401 ax25->rtt = (ax25_ctl.arg * HZ) / 2;
402 ax25->t1 = ax25_ctl.arg * HZ;
406 if (ax25_ctl.arg < 1)
408 ax25->t2 = ax25_ctl.arg * HZ;
412 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
415 ax25->n2 = ax25_ctl.arg;
419 if (ax25_ctl.arg < 0)
421 ax25->t3 = ax25_ctl.arg * HZ;
425 if (ax25_ctl.arg < 0)
427 ax25->idle = ax25_ctl.arg * 60 * HZ;
431 if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
433 ax25->paclen = ax25_ctl.arg;
443 static void ax25_fillin_cb_from_dev(ax25_cb *ax25, ax25_dev *ax25_dev)
445 ax25->rtt = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]) / 2;
446 ax25->t1 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]);
447 ax25->t2 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T2]);
448 ax25->t3 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T3]);
449 ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
450 ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
451 ax25->idle = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_IDLE]);
452 ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
454 if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
455 ax25->modulus = AX25_EMODULUS;
456 ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
458 ax25->modulus = AX25_MODULUS;
459 ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
464 * Fill in a created AX.25 created control block with the default
465 * values for a particular device.
467 void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
469 ax25->ax25_dev = ax25_dev;
471 if (ax25->ax25_dev != NULL) {
472 ax25_fillin_cb_from_dev(ax25, ax25_dev);
477 * No device, use kernel / AX.25 spec default values
479 ax25->rtt = msecs_to_jiffies(AX25_DEF_T1) / 2;
480 ax25->t1 = msecs_to_jiffies(AX25_DEF_T1);
481 ax25->t2 = msecs_to_jiffies(AX25_DEF_T2);
482 ax25->t3 = msecs_to_jiffies(AX25_DEF_T3);
483 ax25->n2 = AX25_DEF_N2;
484 ax25->paclen = AX25_DEF_PACLEN;
485 ax25->idle = msecs_to_jiffies(AX25_DEF_IDLE);
486 ax25->backoff = AX25_DEF_BACKOFF;
488 if (AX25_DEF_AXDEFMODE) {
489 ax25->modulus = AX25_EMODULUS;
490 ax25->window = AX25_DEF_EWINDOW;
492 ax25->modulus = AX25_MODULUS;
493 ax25->window = AX25_DEF_WINDOW;
498 * Create an empty AX.25 control block.
500 ax25_cb *ax25_create_cb(void)
504 if ((ax25 = kzalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
507 atomic_set(&ax25->refcount, 1);
509 skb_queue_head_init(&ax25->write_queue);
510 skb_queue_head_init(&ax25->frag_queue);
511 skb_queue_head_init(&ax25->ack_queue);
512 skb_queue_head_init(&ax25->reseq_queue);
514 init_timer(&ax25->timer);
515 init_timer(&ax25->t1timer);
516 init_timer(&ax25->t2timer);
517 init_timer(&ax25->t3timer);
518 init_timer(&ax25->idletimer);
520 ax25_fillin_cb(ax25, NULL);
522 ax25->state = AX25_STATE_0;
528 * Handling for system calls applied via the various interfaces to an
532 static int ax25_setsockopt(struct socket *sock, int level, int optname,
533 char __user *optval, int optlen)
535 struct sock *sk = sock->sk;
537 struct net_device *dev;
538 char devname[IFNAMSIZ];
541 if (level != SOL_AX25)
544 if (optlen < sizeof(int))
547 if (get_user(opt, (int __user *)optval))
555 if (ax25->modulus == AX25_MODULUS) {
556 if (opt < 1 || opt > 7) {
561 if (opt < 1 || opt > 63) {
574 ax25->rtt = (opt * HZ) / 2;
587 if (opt < 1 || opt > 31) {
607 ax25->idle = opt * 60 * HZ;
611 if (opt < 0 || opt > 2) {
619 ax25->modulus = opt ? AX25_EMODULUS : AX25_MODULUS;
623 ax25->pidincl = opt ? 1 : 0;
627 ax25->iamdigi = opt ? 1 : 0;
631 if (opt < 16 || opt > 65535) {
638 case SO_BINDTODEVICE:
639 if (optlen > IFNAMSIZ)
641 if (copy_from_user(devname, optval, optlen)) {
646 dev = dev_get_by_name(&init_net, devname);
652 if (sk->sk_type == SOCK_SEQPACKET &&
653 (sock->state != SS_UNCONNECTED ||
654 sk->sk_state == TCP_LISTEN)) {
655 res = -EADDRNOTAVAIL;
660 ax25->ax25_dev = ax25_dev_ax25dev(dev);
661 ax25_fillin_cb(ax25, ax25->ax25_dev);
672 static int ax25_getsockopt(struct socket *sock, int level, int optname,
673 char __user *optval, int __user *optlen)
675 struct sock *sk = sock->sk;
677 struct ax25_dev *ax25_dev;
678 char devname[IFNAMSIZ];
683 if (level != SOL_AX25)
686 if (get_user(maxlen, optlen))
692 valptr = (void *) &val;
693 length = min_t(unsigned int, maxlen, sizeof(int));
720 val = ax25->idle / (60 * HZ);
728 val = (ax25->modulus == AX25_EMODULUS);
743 case SO_BINDTODEVICE:
744 ax25_dev = ax25->ax25_dev;
746 if (ax25_dev != NULL && ax25_dev->dev != NULL) {
747 strlcpy(devname, ax25_dev->dev->name, sizeof(devname));
748 length = strlen(devname) + 1;
754 valptr = (void *) devname;
763 if (put_user(length, optlen))
766 return copy_to_user(optval, valptr, length) ? -EFAULT : 0;
769 static int ax25_listen(struct socket *sock, int backlog)
771 struct sock *sk = sock->sk;
775 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_LISTEN) {
776 sk->sk_max_ack_backlog = backlog;
777 sk->sk_state = TCP_LISTEN;
789 * XXX: when creating ax25_sock we should update the .obj_size setting
792 static struct proto ax25_proto = {
794 .owner = THIS_MODULE,
795 .obj_size = sizeof(struct sock),
798 static int ax25_create(struct net *net, struct socket *sock, int protocol)
803 if (net != &init_net)
804 return -EAFNOSUPPORT;
806 switch (sock->type) {
808 if (protocol == 0 || protocol == PF_AX25)
809 protocol = AX25_P_TEXT;
815 case PF_AX25: /* For CLX */
816 protocol = AX25_P_TEXT;
829 return -ESOCKTNOSUPPORT;
830 #ifdef CONFIG_NETROM_MODULE
832 if (ax25_protocol_is_registered(AX25_P_NETROM))
833 return -ESOCKTNOSUPPORT;
835 #ifdef CONFIG_ROSE_MODULE
837 if (ax25_protocol_is_registered(AX25_P_ROSE))
838 return -ESOCKTNOSUPPORT;
848 return -ESOCKTNOSUPPORT;
851 sk = sk_alloc(net, PF_AX25, GFP_ATOMIC, &ax25_proto);
855 ax25 = sk->sk_protinfo = ax25_create_cb();
861 sock_init_data(sock, sk);
863 sk->sk_destruct = ax25_free_sock;
864 sock->ops = &ax25_proto_ops;
865 sk->sk_protocol = protocol;
872 struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
875 ax25_cb *ax25, *oax25;
877 sk = sk_alloc(osk->sk_net, PF_AX25, GFP_ATOMIC, osk->sk_prot);
881 if ((ax25 = ax25_create_cb()) == NULL) {
886 switch (osk->sk_type) {
897 sock_init_data(NULL, sk);
899 sk->sk_destruct = ax25_free_sock;
900 sk->sk_type = osk->sk_type;
901 sk->sk_socket = osk->sk_socket;
902 sk->sk_priority = osk->sk_priority;
903 sk->sk_protocol = osk->sk_protocol;
904 sk->sk_rcvbuf = osk->sk_rcvbuf;
905 sk->sk_sndbuf = osk->sk_sndbuf;
906 sk->sk_state = TCP_ESTABLISHED;
907 sk->sk_sleep = osk->sk_sleep;
908 sock_copy_flags(sk, osk);
910 oax25 = ax25_sk(osk);
912 ax25->modulus = oax25->modulus;
913 ax25->backoff = oax25->backoff;
914 ax25->pidincl = oax25->pidincl;
915 ax25->iamdigi = oax25->iamdigi;
916 ax25->rtt = oax25->rtt;
917 ax25->t1 = oax25->t1;
918 ax25->t2 = oax25->t2;
919 ax25->t3 = oax25->t3;
920 ax25->n2 = oax25->n2;
921 ax25->idle = oax25->idle;
922 ax25->paclen = oax25->paclen;
923 ax25->window = oax25->window;
925 ax25->ax25_dev = ax25_dev;
926 ax25->source_addr = oax25->source_addr;
928 if (oax25->digipeat != NULL) {
929 ax25->digipeat = kmemdup(oax25->digipeat, sizeof(ax25_digi),
931 if (ax25->digipeat == NULL) {
938 sk->sk_protinfo = ax25;
944 static int ax25_release(struct socket *sock)
946 struct sock *sk = sock->sk;
957 if (sk->sk_type == SOCK_SEQPACKET) {
958 switch (ax25->state) {
961 ax25_disconnect(ax25, 0);
963 ax25_destroy_socket(ax25);
968 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
970 ax25_disconnect(ax25, 0);
972 ax25_destroy_socket(ax25);
977 ax25_clear_queues(ax25);
980 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
981 case AX25_PROTO_STD_SIMPLEX:
982 case AX25_PROTO_STD_DUPLEX:
983 ax25_send_control(ax25,
987 ax25_stop_t2timer(ax25);
988 ax25_stop_t3timer(ax25);
989 ax25_stop_idletimer(ax25);
991 #ifdef CONFIG_AX25_DAMA_SLAVE
992 case AX25_PROTO_DAMA_SLAVE:
993 ax25_stop_t3timer(ax25);
994 ax25_stop_idletimer(ax25);
998 ax25_calculate_t1(ax25);
999 ax25_start_t1timer(ax25);
1000 ax25->state = AX25_STATE_2;
1001 sk->sk_state = TCP_CLOSE;
1002 sk->sk_shutdown |= SEND_SHUTDOWN;
1003 sk->sk_state_change(sk);
1004 sock_set_flag(sk, SOCK_DESTROY);
1011 sk->sk_state = TCP_CLOSE;
1012 sk->sk_shutdown |= SEND_SHUTDOWN;
1013 sk->sk_state_change(sk);
1014 ax25_destroy_socket(ax25);
1025 * We support a funny extension here so you can (as root) give any callsign
1026 * digipeated via a local address as source. This hack is obsolete now
1027 * that we've implemented support for SO_BINDTODEVICE. It is however small
1028 * and trivially backward compatible.
1030 static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
1032 struct sock *sk = sock->sk;
1033 struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
1034 ax25_dev *ax25_dev = NULL;
1035 ax25_uid_assoc *user;
1040 if (addr_len != sizeof(struct sockaddr_ax25) &&
1041 addr_len != sizeof(struct full_sockaddr_ax25)) {
1042 /* support for old structure may go away some time */
1043 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1044 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1048 printk(KERN_WARNING "ax25_bind(): %s uses old (6 digipeater) socket structure.\n",
1052 if (addr->fsa_ax25.sax25_family != AF_AX25)
1055 user = ax25_findbyuid(current->euid);
1060 if (ax25_uid_policy && !capable(CAP_NET_ADMIN))
1063 call = addr->fsa_ax25.sax25_call;
1069 if (!sock_flag(sk, SOCK_ZAPPED)) {
1074 ax25->source_addr = call;
1077 * User already set interface with SO_BINDTODEVICE
1079 if (ax25->ax25_dev != NULL)
1082 if (addr_len > sizeof(struct sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
1083 if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) != 0 &&
1084 (ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL) {
1085 err = -EADDRNOTAVAIL;
1089 if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL) {
1090 err = -EADDRNOTAVAIL;
1095 if (ax25_dev != NULL)
1096 ax25_fillin_cb(ax25, ax25_dev);
1100 sock_reset_flag(sk, SOCK_ZAPPED);
1109 * FIXME: nonblock behaviour looks like it may have a bug.
1111 static int __must_check ax25_connect(struct socket *sock,
1112 struct sockaddr *uaddr, int addr_len, int flags)
1114 struct sock *sk = sock->sk;
1115 ax25_cb *ax25 = ax25_sk(sk), *ax25t;
1116 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1117 ax25_digi *digi = NULL;
1118 int ct = 0, err = 0;
1121 * some sanity checks. code further down depends on this
1124 if (addr_len == sizeof(struct sockaddr_ax25))
1125 /* support for this will go away in early 2.5.x
1126 * ax25_connect(): uses obsolete socket structure
1129 else if (addr_len != sizeof(struct full_sockaddr_ax25))
1130 /* support for old structure may go away some time
1131 * ax25_connect(): uses old (6 digipeater) socket structure.
1133 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1134 (addr_len > sizeof(struct full_sockaddr_ax25)))
1138 if (fsa->fsa_ax25.sax25_family != AF_AX25)
1143 /* deal with restarts */
1144 if (sock->state == SS_CONNECTING) {
1145 switch (sk->sk_state) {
1146 case TCP_SYN_SENT: /* still trying */
1150 case TCP_ESTABLISHED: /* connection established */
1151 sock->state = SS_CONNECTED;
1154 case TCP_CLOSE: /* connection refused */
1155 sock->state = SS_UNCONNECTED;
1156 err = -ECONNREFUSED;
1161 if (sk->sk_state == TCP_ESTABLISHED && sk->sk_type == SOCK_SEQPACKET) {
1162 err = -EISCONN; /* No reconnect on a seqpacket socket */
1166 sk->sk_state = TCP_CLOSE;
1167 sock->state = SS_UNCONNECTED;
1169 kfree(ax25->digipeat);
1170 ax25->digipeat = NULL;
1173 * Handle digi-peaters to be used.
1175 if (addr_len > sizeof(struct sockaddr_ax25) &&
1176 fsa->fsa_ax25.sax25_ndigis != 0) {
1177 /* Valid number of digipeaters ? */
1178 if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS) {
1183 if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL) {
1188 digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
1189 digi->lastrepeat = -1;
1191 while (ct < fsa->fsa_ax25.sax25_ndigis) {
1192 if ((fsa->fsa_digipeater[ct].ax25_call[6] &
1193 AX25_HBIT) && ax25->iamdigi) {
1194 digi->repeated[ct] = 1;
1195 digi->lastrepeat = ct;
1197 digi->repeated[ct] = 0;
1199 digi->calls[ct] = fsa->fsa_digipeater[ct];
1205 * Must bind first - autobinding in this may or may not work. If
1206 * the socket is already bound, check to see if the device has
1207 * been filled in, error if it hasn't.
1209 if (sock_flag(sk, SOCK_ZAPPED)) {
1210 /* check if we can remove this feature. It is broken. */
1211 printk(KERN_WARNING "ax25_connect(): %s uses autobind, please contact jreuter@yaina.de\n",
1213 if ((err = ax25_rt_autobind(ax25, &fsa->fsa_ax25.sax25_call)) < 0) {
1218 ax25_fillin_cb(ax25, ax25->ax25_dev);
1221 if (ax25->ax25_dev == NULL) {
1223 err = -EHOSTUNREACH;
1228 if (sk->sk_type == SOCK_SEQPACKET &&
1229 (ax25t=ax25_find_cb(&ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi,
1230 ax25->ax25_dev->dev))) {
1232 err = -EADDRINUSE; /* Already such a connection */
1237 ax25->dest_addr = fsa->fsa_ax25.sax25_call;
1238 ax25->digipeat = digi;
1240 /* First the easy one */
1241 if (sk->sk_type != SOCK_SEQPACKET) {
1242 sock->state = SS_CONNECTED;
1243 sk->sk_state = TCP_ESTABLISHED;
1247 /* Move to connecting socket, ax.25 lapb WAIT_UA.. */
1248 sock->state = SS_CONNECTING;
1249 sk->sk_state = TCP_SYN_SENT;
1251 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
1252 case AX25_PROTO_STD_SIMPLEX:
1253 case AX25_PROTO_STD_DUPLEX:
1254 ax25_std_establish_data_link(ax25);
1257 #ifdef CONFIG_AX25_DAMA_SLAVE
1258 case AX25_PROTO_DAMA_SLAVE:
1259 ax25->modulus = AX25_MODULUS;
1260 ax25->window = ax25->ax25_dev->values[AX25_VALUES_WINDOW];
1261 if (ax25->ax25_dev->dama.slave)
1262 ax25_ds_establish_data_link(ax25);
1264 ax25_std_establish_data_link(ax25);
1269 ax25->state = AX25_STATE_1;
1271 ax25_start_heartbeat(ax25);
1274 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
1279 if (sk->sk_state == TCP_SYN_SENT) {
1283 prepare_to_wait(sk->sk_sleep, &wait,
1284 TASK_INTERRUPTIBLE);
1285 if (sk->sk_state != TCP_SYN_SENT)
1287 if (!signal_pending(current)) {
1296 finish_wait(sk->sk_sleep, &wait);
1302 if (sk->sk_state != TCP_ESTABLISHED) {
1303 /* Not in ABM, not in WAIT_UA -> failed */
1304 sock->state = SS_UNCONNECTED;
1305 err = sock_error(sk); /* Always set at this point */
1309 sock->state = SS_CONNECTED;
1318 static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
1320 struct sk_buff *skb;
1326 if (sock->state != SS_UNCONNECTED)
1329 if ((sk = sock->sk) == NULL)
1333 if (sk->sk_type != SOCK_SEQPACKET) {
1338 if (sk->sk_state != TCP_LISTEN) {
1344 * The read queue this time is holding sockets ready to use
1345 * hooked into the SABM we saved
1348 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
1349 skb = skb_dequeue(&sk->sk_receive_queue);
1353 if (flags & O_NONBLOCK) {
1357 if (!signal_pending(current)) {
1366 finish_wait(sk->sk_sleep, &wait);
1372 newsk->sk_socket = newsock;
1373 newsk->sk_sleep = &newsock->wait;
1375 /* Now attach up the new socket */
1377 sk->sk_ack_backlog--;
1378 newsock->sk = newsk;
1379 newsock->state = SS_CONNECTED;
1387 static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
1388 int *uaddr_len, int peer)
1390 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1391 struct sock *sk = sock->sk;
1392 unsigned char ndigi, i;
1400 if (sk->sk_state != TCP_ESTABLISHED) {
1405 fsa->fsa_ax25.sax25_family = AF_AX25;
1406 fsa->fsa_ax25.sax25_call = ax25->dest_addr;
1407 fsa->fsa_ax25.sax25_ndigis = 0;
1409 if (ax25->digipeat != NULL) {
1410 ndigi = ax25->digipeat->ndigi;
1411 fsa->fsa_ax25.sax25_ndigis = ndigi;
1412 for (i = 0; i < ndigi; i++)
1413 fsa->fsa_digipeater[i] =
1414 ax25->digipeat->calls[i];
1417 fsa->fsa_ax25.sax25_family = AF_AX25;
1418 fsa->fsa_ax25.sax25_call = ax25->source_addr;
1419 fsa->fsa_ax25.sax25_ndigis = 1;
1420 if (ax25->ax25_dev != NULL) {
1421 memcpy(&fsa->fsa_digipeater[0],
1422 ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
1424 fsa->fsa_digipeater[0] = null_ax25_address;
1427 *uaddr_len = sizeof (struct full_sockaddr_ax25);
1435 static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
1436 struct msghdr *msg, size_t len)
1438 struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
1439 struct sock *sk = sock->sk;
1440 struct sockaddr_ax25 sax;
1441 struct sk_buff *skb;
1442 ax25_digi dtmp, *dp;
1445 int lv, err, addr_len = msg->msg_namelen;
1447 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1453 if (sock_flag(sk, SOCK_ZAPPED)) {
1454 err = -EADDRNOTAVAIL;
1458 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1459 send_sig(SIGPIPE, current, 0);
1464 if (ax25->ax25_dev == NULL) {
1469 if (len > ax25->ax25_dev->dev->mtu) {
1475 if (usax->sax25_family != AF_AX25) {
1480 if (addr_len == sizeof(struct sockaddr_ax25))
1481 /* ax25_sendmsg(): uses obsolete socket structure */
1483 else if (addr_len != sizeof(struct full_sockaddr_ax25))
1484 /* support for old structure may go away some time
1485 * ax25_sendmsg(): uses old (6 digipeater)
1488 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1489 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1495 if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
1497 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)usax;
1499 /* Valid number of digipeaters ? */
1500 if (usax->sax25_ndigis < 1 || usax->sax25_ndigis > AX25_MAX_DIGIS) {
1505 dtmp.ndigi = usax->sax25_ndigis;
1507 while (ct < usax->sax25_ndigis) {
1508 dtmp.repeated[ct] = 0;
1509 dtmp.calls[ct] = fsa->fsa_digipeater[ct];
1513 dtmp.lastrepeat = 0;
1517 if (sk->sk_type == SOCK_SEQPACKET &&
1518 ax25cmp(&ax25->dest_addr, &sax.sax25_call)) {
1522 if (usax->sax25_ndigis == 0)
1528 * FIXME: 1003.1g - if the socket is like this because
1529 * it has become closed (not started closed) and is VC
1530 * we ought to SIGPIPE, EPIPE
1532 if (sk->sk_state != TCP_ESTABLISHED) {
1536 sax.sax25_family = AF_AX25;
1537 sax.sax25_call = ax25->dest_addr;
1538 dp = ax25->digipeat;
1541 SOCK_DEBUG(sk, "AX.25: sendto: Addresses built.\n");
1543 /* Build a packet */
1544 SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n");
1546 /* Assume the worst case */
1547 size = len + ax25->ax25_dev->dev->hard_header_len;
1549 skb = sock_alloc_send_skb(sk, size, msg->msg_flags&MSG_DONTWAIT, &err);
1553 skb_reserve(skb, size - len);
1555 SOCK_DEBUG(sk, "AX.25: Appending user data\n");
1557 /* User data follows immediately after the AX.25 data */
1558 if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
1564 skb_reset_network_header(skb);
1566 /* Add the PID if one is not supplied by the user in the skb */
1568 *skb_push(skb, 1) = sk->sk_protocol;
1570 SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
1572 if (sk->sk_type == SOCK_SEQPACKET) {
1573 /* Connected mode sockets go via the LAPB machine */
1574 if (sk->sk_state != TCP_ESTABLISHED) {
1580 /* Shove it onto the queue and kick */
1581 ax25_output(ax25, ax25->paclen, skb);
1587 skb_push(skb, 1 + ax25_addr_size(dp));
1589 SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
1592 SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
1594 /* Build an AX.25 header */
1595 lv = ax25_addr_build(skb->data, &ax25->source_addr, &sax.sax25_call,
1596 dp, AX25_COMMAND, AX25_MODULUS);
1598 SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
1600 skb_set_transport_header(skb, lv);
1602 SOCK_DEBUG(sk, "base=%p pos=%p\n",
1603 skb->data, skb_transport_header(skb));
1605 *skb_transport_header(skb) = AX25_UI;
1607 /* Datagram frames go straight out of the door as UI */
1608 ax25_queue_xmit(skb, ax25->ax25_dev->dev);
1618 static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
1619 struct msghdr *msg, size_t size, int flags)
1621 struct sock *sk = sock->sk;
1622 struct sk_buff *skb;
1628 * This works for seqpacket too. The receiver has ordered the
1629 * queue for us! We do one quick check first though
1631 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_ESTABLISHED) {
1636 /* Now we can treat all alike */
1637 skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
1638 flags & MSG_DONTWAIT, &err);
1642 if (!ax25_sk(sk)->pidincl)
1643 skb_pull(skb, 1); /* Remove PID */
1645 skb_reset_transport_header(skb);
1648 if (copied > size) {
1650 msg->msg_flags |= MSG_TRUNC;
1653 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1655 if (msg->msg_namelen != 0) {
1656 struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
1659 const unsigned char *mac = skb_mac_header(skb);
1661 ax25_addr_parse(mac + 1, skb->data - mac - 1, &src, NULL,
1663 sax->sax25_family = AF_AX25;
1664 /* We set this correctly, even though we may not let the
1665 application know the digi calls further down (because it
1666 did NOT ask to know them). This could get political... **/
1667 sax->sax25_ndigis = digi.ndigi;
1668 sax->sax25_call = src;
1670 if (sax->sax25_ndigis != 0) {
1672 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)sax;
1674 for (ct = 0; ct < digi.ndigi; ct++)
1675 fsa->fsa_digipeater[ct] = digi.calls[ct];
1677 msg->msg_namelen = sizeof(struct full_sockaddr_ax25);
1680 skb_free_datagram(sk, skb);
1689 static int ax25_shutdown(struct socket *sk, int how)
1691 /* FIXME - generate DM and RNR states */
1695 static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1697 struct sock *sk = sock->sk;
1698 void __user *argp = (void __user *)arg;
1705 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
1708 res = put_user(amount, (int __user *)argp);
1713 struct sk_buff *skb;
1715 /* These two are safe on a single CPU system as only user tasks fiddle here */
1716 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1718 res = put_user(amount, (int __user *) argp);
1723 res = sock_get_timestamp(sk, argp);
1727 res = sock_get_timestampns(sk, argp);
1730 case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
1731 case SIOCAX25DELUID: /* Delete a uid from the uid/call map table */
1732 case SIOCAX25GETUID: {
1733 struct sockaddr_ax25 sax25;
1734 if (copy_from_user(&sax25, argp, sizeof(sax25))) {
1738 res = ax25_uid_ioctl(cmd, &sax25);
1742 case SIOCAX25NOUID: { /* Set the default policy (default/bar) */
1744 if (!capable(CAP_NET_ADMIN)) {
1748 if (get_user(amount, (long __user *)argp)) {
1752 if (amount > AX25_NOUID_BLOCK) {
1756 ax25_uid_policy = amount;
1764 if (!capable(CAP_NET_ADMIN)) {
1768 res = ax25_rt_ioctl(cmd, argp);
1771 case SIOCAX25CTLCON:
1772 if (!capable(CAP_NET_ADMIN)) {
1776 res = ax25_ctl_ioctl(cmd, argp);
1779 case SIOCAX25GETINFO:
1780 case SIOCAX25GETINFOOLD: {
1781 ax25_cb *ax25 = ax25_sk(sk);
1782 struct ax25_info_struct ax25_info;
1784 ax25_info.t1 = ax25->t1 / HZ;
1785 ax25_info.t2 = ax25->t2 / HZ;
1786 ax25_info.t3 = ax25->t3 / HZ;
1787 ax25_info.idle = ax25->idle / (60 * HZ);
1788 ax25_info.n2 = ax25->n2;
1789 ax25_info.t1timer = ax25_display_timer(&ax25->t1timer) / HZ;
1790 ax25_info.t2timer = ax25_display_timer(&ax25->t2timer) / HZ;
1791 ax25_info.t3timer = ax25_display_timer(&ax25->t3timer) / HZ;
1792 ax25_info.idletimer = ax25_display_timer(&ax25->idletimer) / (60 * HZ);
1793 ax25_info.n2count = ax25->n2count;
1794 ax25_info.state = ax25->state;
1795 ax25_info.rcv_q = atomic_read(&sk->sk_rmem_alloc);
1796 ax25_info.snd_q = atomic_read(&sk->sk_wmem_alloc);
1797 ax25_info.vs = ax25->vs;
1798 ax25_info.vr = ax25->vr;
1799 ax25_info.va = ax25->va;
1800 ax25_info.vs_max = ax25->vs; /* reserved */
1801 ax25_info.paclen = ax25->paclen;
1802 ax25_info.window = ax25->window;
1804 /* old structure? */
1805 if (cmd == SIOCAX25GETINFOOLD) {
1806 static int warned = 0;
1808 printk(KERN_INFO "%s uses old SIOCAX25GETINFO\n",
1813 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct_deprecated))) {
1818 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct))) {
1827 case SIOCAX25ADDFWD:
1828 case SIOCAX25DELFWD: {
1829 struct ax25_fwd_struct ax25_fwd;
1830 if (!capable(CAP_NET_ADMIN)) {
1834 if (copy_from_user(&ax25_fwd, argp, sizeof(ax25_fwd))) {
1838 res = ax25_fwd_ioctl(cmd, &ax25_fwd);
1844 case SIOCGIFDSTADDR:
1845 case SIOCSIFDSTADDR:
1846 case SIOCGIFBRDADDR:
1847 case SIOCSIFBRDADDR:
1848 case SIOCGIFNETMASK:
1849 case SIOCSIFNETMASK:
1864 #ifdef CONFIG_PROC_FS
1866 static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
1868 struct ax25_cb *ax25;
1869 struct hlist_node *node;
1872 spin_lock_bh(&ax25_list_lock);
1873 ax25_for_each(ax25, node, &ax25_list) {
1881 static void *ax25_info_next(struct seq_file *seq, void *v, loff_t *pos)
1885 return hlist_entry( ((struct ax25_cb *)v)->ax25_node.next,
1886 struct ax25_cb, ax25_node);
1889 static void ax25_info_stop(struct seq_file *seq, void *v)
1891 spin_unlock_bh(&ax25_list_lock);
1894 static int ax25_info_show(struct seq_file *seq, void *v)
1903 * 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
1906 seq_printf(seq, "%8.8lx %s %s%s ",
1908 ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
1909 ax2asc(buf, &ax25->source_addr),
1910 ax25->iamdigi? "*":"");
1911 seq_printf(seq, "%s", ax2asc(buf, &ax25->dest_addr));
1913 for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
1914 seq_printf(seq, ",%s%s",
1915 ax2asc(buf, &ax25->digipeat->calls[k]),
1916 ax25->digipeat->repeated[k]? "*":"");
1919 seq_printf(seq, " %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %d %d",
1921 ax25->vs, ax25->vr, ax25->va,
1922 ax25_display_timer(&ax25->t1timer) / HZ, ax25->t1 / HZ,
1923 ax25_display_timer(&ax25->t2timer) / HZ, ax25->t2 / HZ,
1924 ax25_display_timer(&ax25->t3timer) / HZ, ax25->t3 / HZ,
1925 ax25_display_timer(&ax25->idletimer) / (60 * HZ),
1926 ax25->idle / (60 * HZ),
1927 ax25->n2count, ax25->n2,
1932 if (ax25->sk != NULL) {
1933 bh_lock_sock(ax25->sk);
1934 seq_printf(seq," %d %d %ld\n",
1935 atomic_read(&ax25->sk->sk_wmem_alloc),
1936 atomic_read(&ax25->sk->sk_rmem_alloc),
1937 ax25->sk->sk_socket != NULL ? SOCK_INODE(ax25->sk->sk_socket)->i_ino : 0L);
1938 bh_unlock_sock(ax25->sk);
1940 seq_puts(seq, " * * *\n");
1945 static const struct seq_operations ax25_info_seqops = {
1946 .start = ax25_info_start,
1947 .next = ax25_info_next,
1948 .stop = ax25_info_stop,
1949 .show = ax25_info_show,
1952 static int ax25_info_open(struct inode *inode, struct file *file)
1954 return seq_open(file, &ax25_info_seqops);
1957 static const struct file_operations ax25_info_fops = {
1958 .owner = THIS_MODULE,
1959 .open = ax25_info_open,
1961 .llseek = seq_lseek,
1962 .release = seq_release,
1967 static struct net_proto_family ax25_family_ops = {
1969 .create = ax25_create,
1970 .owner = THIS_MODULE,
1973 static const struct proto_ops ax25_proto_ops = {
1975 .owner = THIS_MODULE,
1976 .release = ax25_release,
1978 .connect = ax25_connect,
1979 .socketpair = sock_no_socketpair,
1980 .accept = ax25_accept,
1981 .getname = ax25_getname,
1982 .poll = datagram_poll,
1983 .ioctl = ax25_ioctl,
1984 .listen = ax25_listen,
1985 .shutdown = ax25_shutdown,
1986 .setsockopt = ax25_setsockopt,
1987 .getsockopt = ax25_getsockopt,
1988 .sendmsg = ax25_sendmsg,
1989 .recvmsg = ax25_recvmsg,
1990 .mmap = sock_no_mmap,
1991 .sendpage = sock_no_sendpage,
1995 * Called by socket.c on kernel start up
1997 static struct packet_type ax25_packet_type = {
1998 .type = __constant_htons(ETH_P_AX25),
1999 .dev = NULL, /* All devices */
2000 .func = ax25_kiss_rcv,
2003 static struct notifier_block ax25_dev_notifier = {
2004 .notifier_call =ax25_device_event,
2007 static int __init ax25_init(void)
2009 int rc = proto_register(&ax25_proto, 0);
2014 sock_register(&ax25_family_ops);
2015 dev_add_pack(&ax25_packet_type);
2016 register_netdevice_notifier(&ax25_dev_notifier);
2017 ax25_register_sysctl();
2019 proc_net_fops_create(&init_net, "ax25_route", S_IRUGO, &ax25_route_fops);
2020 proc_net_fops_create(&init_net, "ax25", S_IRUGO, &ax25_info_fops);
2021 proc_net_fops_create(&init_net, "ax25_calls", S_IRUGO, &ax25_uid_fops);
2025 module_init(ax25_init);
2028 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
2029 MODULE_DESCRIPTION("The amateur radio AX.25 link layer protocol");
2030 MODULE_LICENSE("GPL");
2031 MODULE_ALIAS_NETPROTO(PF_AX25);
2033 static void __exit ax25_exit(void)
2035 proc_net_remove(&init_net, "ax25_route");
2036 proc_net_remove(&init_net, "ax25");
2037 proc_net_remove(&init_net, "ax25_calls");
2042 ax25_unregister_sysctl();
2043 unregister_netdevice_notifier(&ax25_dev_notifier);
2045 dev_remove_pack(&ax25_packet_type);
2047 sock_unregister(PF_AX25);
2048 proto_unregister(&ax25_proto);
2050 module_exit(ax25_exit);