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>
28 #include <linux/slab.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 <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 (!net_eq(dev_net(dev), &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 /* 9A4GL: hack to release unaccepted sockets */
321 skb->sk->sk_state = TCP_LISTEN;
323 ax25_start_heartbeat(sax25);
324 sax25->state = AX25_STATE_0;
329 skb_queue_purge(&ax25->sk->sk_write_queue);
332 if (ax25->sk != NULL) {
333 if (sk_has_allocations(ax25->sk)) {
334 /* Defer: outstanding buffers */
335 setup_timer(&ax25->dtimer, ax25_destroy_timer,
336 (unsigned long)ax25);
337 ax25->dtimer.expires = jiffies + 2 * HZ;
338 add_timer(&ax25->dtimer);
340 struct sock *sk=ax25->sk;
350 * dl1bke 960311: set parameters for existing AX.25 connections,
351 * includes a KILL command to abort any connection.
352 * VERY useful for debugging ;-)
354 static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
356 struct ax25_ctl_struct ax25_ctl;
363 if (copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl)))
366 if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
369 if (ax25_ctl.digi_count > AX25_MAX_DIGIS)
372 if (ax25_ctl.arg > ULONG_MAX / HZ && ax25_ctl.cmd != AX25_KILL)
375 digi.ndigi = ax25_ctl.digi_count;
376 for (k = 0; k < digi.ndigi; k++)
377 digi.calls[k] = ax25_ctl.digi_addr[k];
379 if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, &digi, ax25_dev->dev)) == NULL)
382 switch (ax25_ctl.cmd) {
384 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
385 #ifdef CONFIG_AX25_DAMA_SLAVE
386 if (ax25_dev->dama.slave && ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
389 ax25_disconnect(ax25, ENETRESET);
393 if (ax25->modulus == AX25_MODULUS) {
394 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
397 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
400 ax25->window = ax25_ctl.arg;
404 if (ax25_ctl.arg < 1 || ax25_ctl.arg > ULONG_MAX / HZ)
406 ax25->rtt = (ax25_ctl.arg * HZ) / 2;
407 ax25->t1 = ax25_ctl.arg * HZ;
411 if (ax25_ctl.arg < 1 || ax25_ctl.arg > ULONG_MAX / HZ)
413 ax25->t2 = ax25_ctl.arg * HZ;
417 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
420 ax25->n2 = ax25_ctl.arg;
424 if (ax25_ctl.arg > ULONG_MAX / HZ)
426 ax25->t3 = ax25_ctl.arg * HZ;
430 if (ax25_ctl.arg > ULONG_MAX / (60 * HZ))
433 ax25->idle = ax25_ctl.arg * 60 * HZ;
437 if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
439 ax25->paclen = ax25_ctl.arg;
455 static void ax25_fillin_cb_from_dev(ax25_cb *ax25, ax25_dev *ax25_dev)
457 ax25->rtt = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]) / 2;
458 ax25->t1 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]);
459 ax25->t2 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T2]);
460 ax25->t3 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T3]);
461 ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
462 ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
463 ax25->idle = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_IDLE]);
464 ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
466 if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
467 ax25->modulus = AX25_EMODULUS;
468 ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
470 ax25->modulus = AX25_MODULUS;
471 ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
476 * Fill in a created AX.25 created control block with the default
477 * values for a particular device.
479 void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
481 ax25->ax25_dev = ax25_dev;
483 if (ax25->ax25_dev != NULL) {
484 ax25_fillin_cb_from_dev(ax25, ax25_dev);
489 * No device, use kernel / AX.25 spec default values
491 ax25->rtt = msecs_to_jiffies(AX25_DEF_T1) / 2;
492 ax25->t1 = msecs_to_jiffies(AX25_DEF_T1);
493 ax25->t2 = msecs_to_jiffies(AX25_DEF_T2);
494 ax25->t3 = msecs_to_jiffies(AX25_DEF_T3);
495 ax25->n2 = AX25_DEF_N2;
496 ax25->paclen = AX25_DEF_PACLEN;
497 ax25->idle = msecs_to_jiffies(AX25_DEF_IDLE);
498 ax25->backoff = AX25_DEF_BACKOFF;
500 if (AX25_DEF_AXDEFMODE) {
501 ax25->modulus = AX25_EMODULUS;
502 ax25->window = AX25_DEF_EWINDOW;
504 ax25->modulus = AX25_MODULUS;
505 ax25->window = AX25_DEF_WINDOW;
510 * Create an empty AX.25 control block.
512 ax25_cb *ax25_create_cb(void)
516 if ((ax25 = kzalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
519 atomic_set(&ax25->refcount, 1);
521 skb_queue_head_init(&ax25->write_queue);
522 skb_queue_head_init(&ax25->frag_queue);
523 skb_queue_head_init(&ax25->ack_queue);
524 skb_queue_head_init(&ax25->reseq_queue);
526 ax25_setup_timers(ax25);
528 ax25_fillin_cb(ax25, NULL);
530 ax25->state = AX25_STATE_0;
536 * Handling for system calls applied via the various interfaces to an
540 static int ax25_setsockopt(struct socket *sock, int level, int optname,
541 char __user *optval, unsigned int optlen)
543 struct sock *sk = sock->sk;
545 struct net_device *dev;
546 char devname[IFNAMSIZ];
550 if (level != SOL_AX25)
553 if (optlen < sizeof(unsigned int))
556 if (get_user(opt, (unsigned int __user *)optval))
564 if (ax25->modulus == AX25_MODULUS) {
565 if (opt < 1 || opt > 7) {
570 if (opt < 1 || opt > 63) {
579 if (opt < 1 || opt > ULONG_MAX / HZ) {
583 ax25->rtt = (opt * HZ) >> 1;
588 if (opt < 1 || opt > ULONG_MAX / HZ) {
596 if (opt < 1 || opt > 31) {
604 if (opt < 1 || opt > ULONG_MAX / HZ) {
612 if (opt > ULONG_MAX / (60 * HZ)) {
616 ax25->idle = opt * 60 * HZ;
628 ax25->modulus = opt ? AX25_EMODULUS : AX25_MODULUS;
632 ax25->pidincl = opt ? 1 : 0;
636 ax25->iamdigi = opt ? 1 : 0;
640 if (opt < 16 || opt > 65535) {
647 case SO_BINDTODEVICE:
648 if (optlen > IFNAMSIZ)
651 if (copy_from_user(devname, optval, optlen)) {
656 if (sk->sk_type == SOCK_SEQPACKET &&
657 (sock->state != SS_UNCONNECTED ||
658 sk->sk_state == TCP_LISTEN)) {
659 res = -EADDRNOTAVAIL;
663 dev = dev_get_by_name(&init_net, devname);
669 ax25->ax25_dev = ax25_dev_ax25dev(dev);
670 ax25_fillin_cb(ax25, ax25->ax25_dev);
682 static int ax25_getsockopt(struct socket *sock, int level, int optname,
683 char __user *optval, int __user *optlen)
685 struct sock *sk = sock->sk;
687 struct ax25_dev *ax25_dev;
688 char devname[IFNAMSIZ];
693 if (level != SOL_AX25)
696 if (get_user(maxlen, optlen))
702 valptr = (void *) &val;
703 length = min_t(unsigned int, maxlen, sizeof(int));
730 val = ax25->idle / (60 * HZ);
738 val = (ax25->modulus == AX25_EMODULUS);
753 case SO_BINDTODEVICE:
754 ax25_dev = ax25->ax25_dev;
756 if (ax25_dev != NULL && ax25_dev->dev != NULL) {
757 strlcpy(devname, ax25_dev->dev->name, sizeof(devname));
758 length = strlen(devname) + 1;
764 valptr = (void *) devname;
773 if (put_user(length, optlen))
776 return copy_to_user(optval, valptr, length) ? -EFAULT : 0;
779 static int ax25_listen(struct socket *sock, int backlog)
781 struct sock *sk = sock->sk;
785 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_LISTEN) {
786 sk->sk_max_ack_backlog = backlog;
787 sk->sk_state = TCP_LISTEN;
799 * XXX: when creating ax25_sock we should update the .obj_size setting
802 static struct proto ax25_proto = {
804 .owner = THIS_MODULE,
805 .obj_size = sizeof(struct sock),
808 static int ax25_create(struct net *net, struct socket *sock, int protocol,
814 if (!net_eq(net, &init_net))
815 return -EAFNOSUPPORT;
817 switch (sock->type) {
819 if (protocol == 0 || protocol == PF_AX25)
820 protocol = AX25_P_TEXT;
826 case PF_AX25: /* For CLX */
827 protocol = AX25_P_TEXT;
840 return -ESOCKTNOSUPPORT;
841 #ifdef CONFIG_NETROM_MODULE
843 if (ax25_protocol_is_registered(AX25_P_NETROM))
844 return -ESOCKTNOSUPPORT;
847 #ifdef CONFIG_ROSE_MODULE
849 if (ax25_protocol_is_registered(AX25_P_ROSE))
850 return -ESOCKTNOSUPPORT;
860 return -ESOCKTNOSUPPORT;
863 sk = sk_alloc(net, PF_AX25, GFP_ATOMIC, &ax25_proto);
867 ax25 = sk->sk_protinfo = ax25_create_cb();
873 sock_init_data(sock, sk);
875 sk->sk_destruct = ax25_free_sock;
876 sock->ops = &ax25_proto_ops;
877 sk->sk_protocol = protocol;
884 struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
887 ax25_cb *ax25, *oax25;
889 sk = sk_alloc(sock_net(osk), PF_AX25, GFP_ATOMIC, osk->sk_prot);
893 if ((ax25 = ax25_create_cb()) == NULL) {
898 switch (osk->sk_type) {
909 sock_init_data(NULL, sk);
911 sk->sk_type = osk->sk_type;
912 sk->sk_priority = osk->sk_priority;
913 sk->sk_protocol = osk->sk_protocol;
914 sk->sk_rcvbuf = osk->sk_rcvbuf;
915 sk->sk_sndbuf = osk->sk_sndbuf;
916 sk->sk_state = TCP_ESTABLISHED;
917 sock_copy_flags(sk, osk);
919 oax25 = ax25_sk(osk);
921 ax25->modulus = oax25->modulus;
922 ax25->backoff = oax25->backoff;
923 ax25->pidincl = oax25->pidincl;
924 ax25->iamdigi = oax25->iamdigi;
925 ax25->rtt = oax25->rtt;
926 ax25->t1 = oax25->t1;
927 ax25->t2 = oax25->t2;
928 ax25->t3 = oax25->t3;
929 ax25->n2 = oax25->n2;
930 ax25->idle = oax25->idle;
931 ax25->paclen = oax25->paclen;
932 ax25->window = oax25->window;
934 ax25->ax25_dev = ax25_dev;
935 ax25->source_addr = oax25->source_addr;
937 if (oax25->digipeat != NULL) {
938 ax25->digipeat = kmemdup(oax25->digipeat, sizeof(ax25_digi),
940 if (ax25->digipeat == NULL) {
947 sk->sk_protinfo = ax25;
948 sk->sk_destruct = ax25_free_sock;
954 static int ax25_release(struct socket *sock)
956 struct sock *sk = sock->sk;
967 if (sk->sk_type == SOCK_SEQPACKET) {
968 switch (ax25->state) {
971 ax25_disconnect(ax25, 0);
973 ax25_destroy_socket(ax25);
978 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
980 ax25_disconnect(ax25, 0);
982 ax25_destroy_socket(ax25);
987 ax25_clear_queues(ax25);
990 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
991 case AX25_PROTO_STD_SIMPLEX:
992 case AX25_PROTO_STD_DUPLEX:
993 ax25_send_control(ax25,
997 ax25_stop_t2timer(ax25);
998 ax25_stop_t3timer(ax25);
999 ax25_stop_idletimer(ax25);
1001 #ifdef CONFIG_AX25_DAMA_SLAVE
1002 case AX25_PROTO_DAMA_SLAVE:
1003 ax25_stop_t3timer(ax25);
1004 ax25_stop_idletimer(ax25);
1008 ax25_calculate_t1(ax25);
1009 ax25_start_t1timer(ax25);
1010 ax25->state = AX25_STATE_2;
1011 sk->sk_state = TCP_CLOSE;
1012 sk->sk_shutdown |= SEND_SHUTDOWN;
1013 sk->sk_state_change(sk);
1014 sock_set_flag(sk, SOCK_DESTROY);
1021 sk->sk_state = TCP_CLOSE;
1022 sk->sk_shutdown |= SEND_SHUTDOWN;
1023 sk->sk_state_change(sk);
1024 ax25_destroy_socket(ax25);
1035 * We support a funny extension here so you can (as root) give any callsign
1036 * digipeated via a local address as source. This hack is obsolete now
1037 * that we've implemented support for SO_BINDTODEVICE. It is however small
1038 * and trivially backward compatible.
1040 static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
1042 struct sock *sk = sock->sk;
1043 struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
1044 ax25_dev *ax25_dev = NULL;
1045 ax25_uid_assoc *user;
1050 if (addr_len != sizeof(struct sockaddr_ax25) &&
1051 addr_len != sizeof(struct full_sockaddr_ax25))
1052 /* support for old structure may go away some time
1053 * ax25_bind(): uses old (6 digipeater) socket structure.
1055 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1056 (addr_len > sizeof(struct full_sockaddr_ax25)))
1059 if (addr->fsa_ax25.sax25_family != AF_AX25)
1062 user = ax25_findbyuid(current_euid());
1067 if (ax25_uid_policy && !capable(CAP_NET_ADMIN))
1070 call = addr->fsa_ax25.sax25_call;
1076 if (!sock_flag(sk, SOCK_ZAPPED)) {
1081 ax25->source_addr = call;
1084 * User already set interface with SO_BINDTODEVICE
1086 if (ax25->ax25_dev != NULL)
1089 if (addr_len > sizeof(struct sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
1090 if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) != 0 &&
1091 (ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL) {
1092 err = -EADDRNOTAVAIL;
1096 if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL) {
1097 err = -EADDRNOTAVAIL;
1102 if (ax25_dev != NULL)
1103 ax25_fillin_cb(ax25, ax25_dev);
1107 sock_reset_flag(sk, SOCK_ZAPPED);
1116 * FIXME: nonblock behaviour looks like it may have a bug.
1118 static int __must_check ax25_connect(struct socket *sock,
1119 struct sockaddr *uaddr, int addr_len, int flags)
1121 struct sock *sk = sock->sk;
1122 ax25_cb *ax25 = ax25_sk(sk), *ax25t;
1123 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1124 ax25_digi *digi = NULL;
1125 int ct = 0, err = 0;
1128 * some sanity checks. code further down depends on this
1131 if (addr_len == sizeof(struct sockaddr_ax25))
1132 /* support for this will go away in early 2.5.x
1133 * ax25_connect(): uses obsolete socket structure
1136 else if (addr_len != sizeof(struct full_sockaddr_ax25))
1137 /* support for old structure may go away some time
1138 * ax25_connect(): uses old (6 digipeater) socket structure.
1140 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1141 (addr_len > sizeof(struct full_sockaddr_ax25)))
1145 if (fsa->fsa_ax25.sax25_family != AF_AX25)
1150 /* deal with restarts */
1151 if (sock->state == SS_CONNECTING) {
1152 switch (sk->sk_state) {
1153 case TCP_SYN_SENT: /* still trying */
1157 case TCP_ESTABLISHED: /* connection established */
1158 sock->state = SS_CONNECTED;
1161 case TCP_CLOSE: /* connection refused */
1162 sock->state = SS_UNCONNECTED;
1163 err = -ECONNREFUSED;
1168 if (sk->sk_state == TCP_ESTABLISHED && sk->sk_type == SOCK_SEQPACKET) {
1169 err = -EISCONN; /* No reconnect on a seqpacket socket */
1173 sk->sk_state = TCP_CLOSE;
1174 sock->state = SS_UNCONNECTED;
1176 kfree(ax25->digipeat);
1177 ax25->digipeat = NULL;
1180 * Handle digi-peaters to be used.
1182 if (addr_len > sizeof(struct sockaddr_ax25) &&
1183 fsa->fsa_ax25.sax25_ndigis != 0) {
1184 /* Valid number of digipeaters ? */
1185 if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS) {
1190 if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL) {
1195 digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
1196 digi->lastrepeat = -1;
1198 while (ct < fsa->fsa_ax25.sax25_ndigis) {
1199 if ((fsa->fsa_digipeater[ct].ax25_call[6] &
1200 AX25_HBIT) && ax25->iamdigi) {
1201 digi->repeated[ct] = 1;
1202 digi->lastrepeat = ct;
1204 digi->repeated[ct] = 0;
1206 digi->calls[ct] = fsa->fsa_digipeater[ct];
1212 * Must bind first - autobinding in this may or may not work. If
1213 * the socket is already bound, check to see if the device has
1214 * been filled in, error if it hasn't.
1216 if (sock_flag(sk, SOCK_ZAPPED)) {
1217 /* check if we can remove this feature. It is broken. */
1218 printk(KERN_WARNING "ax25_connect(): %s uses autobind, please contact jreuter@yaina.de\n",
1220 if ((err = ax25_rt_autobind(ax25, &fsa->fsa_ax25.sax25_call)) < 0) {
1225 ax25_fillin_cb(ax25, ax25->ax25_dev);
1228 if (ax25->ax25_dev == NULL) {
1230 err = -EHOSTUNREACH;
1235 if (sk->sk_type == SOCK_SEQPACKET &&
1236 (ax25t=ax25_find_cb(&ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi,
1237 ax25->ax25_dev->dev))) {
1239 err = -EADDRINUSE; /* Already such a connection */
1244 ax25->dest_addr = fsa->fsa_ax25.sax25_call;
1245 ax25->digipeat = digi;
1247 /* First the easy one */
1248 if (sk->sk_type != SOCK_SEQPACKET) {
1249 sock->state = SS_CONNECTED;
1250 sk->sk_state = TCP_ESTABLISHED;
1254 /* Move to connecting socket, ax.25 lapb WAIT_UA.. */
1255 sock->state = SS_CONNECTING;
1256 sk->sk_state = TCP_SYN_SENT;
1258 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
1259 case AX25_PROTO_STD_SIMPLEX:
1260 case AX25_PROTO_STD_DUPLEX:
1261 ax25_std_establish_data_link(ax25);
1264 #ifdef CONFIG_AX25_DAMA_SLAVE
1265 case AX25_PROTO_DAMA_SLAVE:
1266 ax25->modulus = AX25_MODULUS;
1267 ax25->window = ax25->ax25_dev->values[AX25_VALUES_WINDOW];
1268 if (ax25->ax25_dev->dama.slave)
1269 ax25_ds_establish_data_link(ax25);
1271 ax25_std_establish_data_link(ax25);
1276 ax25->state = AX25_STATE_1;
1278 ax25_start_heartbeat(ax25);
1281 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
1286 if (sk->sk_state == TCP_SYN_SENT) {
1290 prepare_to_wait(sk_sleep(sk), &wait,
1291 TASK_INTERRUPTIBLE);
1292 if (sk->sk_state != TCP_SYN_SENT)
1294 if (!signal_pending(current)) {
1303 finish_wait(sk_sleep(sk), &wait);
1309 if (sk->sk_state != TCP_ESTABLISHED) {
1310 /* Not in ABM, not in WAIT_UA -> failed */
1311 sock->state = SS_UNCONNECTED;
1312 err = sock_error(sk); /* Always set at this point */
1316 sock->state = SS_CONNECTED;
1325 static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
1327 struct sk_buff *skb;
1333 if (sock->state != SS_UNCONNECTED)
1336 if ((sk = sock->sk) == NULL)
1340 if (sk->sk_type != SOCK_SEQPACKET) {
1345 if (sk->sk_state != TCP_LISTEN) {
1351 * The read queue this time is holding sockets ready to use
1352 * hooked into the SABM we saved
1355 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
1356 skb = skb_dequeue(&sk->sk_receive_queue);
1360 if (flags & O_NONBLOCK) {
1364 if (!signal_pending(current)) {
1373 finish_wait(sk_sleep(sk), &wait);
1379 sock_graft(newsk, newsock);
1381 /* Now attach up the new socket */
1383 sk->sk_ack_backlog--;
1384 newsock->state = SS_CONNECTED;
1392 static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
1393 int *uaddr_len, int peer)
1395 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1396 struct sock *sk = sock->sk;
1397 unsigned char ndigi, i;
1401 memset(fsa, 0, sizeof(*fsa));
1406 if (sk->sk_state != TCP_ESTABLISHED) {
1411 fsa->fsa_ax25.sax25_family = AF_AX25;
1412 fsa->fsa_ax25.sax25_call = ax25->dest_addr;
1414 if (ax25->digipeat != NULL) {
1415 ndigi = ax25->digipeat->ndigi;
1416 fsa->fsa_ax25.sax25_ndigis = ndigi;
1417 for (i = 0; i < ndigi; i++)
1418 fsa->fsa_digipeater[i] =
1419 ax25->digipeat->calls[i];
1422 fsa->fsa_ax25.sax25_family = AF_AX25;
1423 fsa->fsa_ax25.sax25_call = ax25->source_addr;
1424 fsa->fsa_ax25.sax25_ndigis = 1;
1425 if (ax25->ax25_dev != NULL) {
1426 memcpy(&fsa->fsa_digipeater[0],
1427 ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
1429 fsa->fsa_digipeater[0] = null_ax25_address;
1432 *uaddr_len = sizeof (struct full_sockaddr_ax25);
1440 static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
1441 struct msghdr *msg, size_t len)
1443 struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
1444 struct sock *sk = sock->sk;
1445 struct sockaddr_ax25 sax;
1446 struct sk_buff *skb;
1447 ax25_digi dtmp, *dp;
1450 int lv, err, addr_len = msg->msg_namelen;
1452 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1458 if (sock_flag(sk, SOCK_ZAPPED)) {
1459 err = -EADDRNOTAVAIL;
1463 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1464 send_sig(SIGPIPE, current, 0);
1469 if (ax25->ax25_dev == NULL) {
1474 if (len > ax25->ax25_dev->dev->mtu) {
1480 if (usax->sax25_family != AF_AX25) {
1485 if (addr_len == sizeof(struct sockaddr_ax25))
1486 /* ax25_sendmsg(): uses obsolete socket structure */
1488 else if (addr_len != sizeof(struct full_sockaddr_ax25))
1489 /* support for old structure may go away some time
1490 * ax25_sendmsg(): uses old (6 digipeater)
1493 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1494 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1500 if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
1502 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)usax;
1504 /* Valid number of digipeaters ? */
1505 if (usax->sax25_ndigis < 1 || usax->sax25_ndigis > AX25_MAX_DIGIS) {
1510 dtmp.ndigi = usax->sax25_ndigis;
1512 while (ct < usax->sax25_ndigis) {
1513 dtmp.repeated[ct] = 0;
1514 dtmp.calls[ct] = fsa->fsa_digipeater[ct];
1518 dtmp.lastrepeat = 0;
1522 if (sk->sk_type == SOCK_SEQPACKET &&
1523 ax25cmp(&ax25->dest_addr, &sax.sax25_call)) {
1527 if (usax->sax25_ndigis == 0)
1533 * FIXME: 1003.1g - if the socket is like this because
1534 * it has become closed (not started closed) and is VC
1535 * we ought to SIGPIPE, EPIPE
1537 if (sk->sk_state != TCP_ESTABLISHED) {
1541 sax.sax25_family = AF_AX25;
1542 sax.sax25_call = ax25->dest_addr;
1543 dp = ax25->digipeat;
1546 /* Build a packet */
1547 /* Assume the worst case */
1548 size = len + ax25->ax25_dev->dev->hard_header_len;
1550 skb = sock_alloc_send_skb(sk, size, msg->msg_flags&MSG_DONTWAIT, &err);
1554 skb_reserve(skb, size - len);
1556 /* User data follows immediately after the AX.25 data */
1557 if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
1563 skb_reset_network_header(skb);
1565 /* Add the PID if one is not supplied by the user in the skb */
1567 *skb_push(skb, 1) = sk->sk_protocol;
1569 if (sk->sk_type == SOCK_SEQPACKET) {
1570 /* Connected mode sockets go via the LAPB machine */
1571 if (sk->sk_state != TCP_ESTABLISHED) {
1577 /* Shove it onto the queue and kick */
1578 ax25_output(ax25, ax25->paclen, skb);
1584 skb_push(skb, 1 + ax25_addr_size(dp));
1586 /* Building AX.25 Header */
1588 /* Build an AX.25 header */
1589 lv = ax25_addr_build(skb->data, &ax25->source_addr, &sax.sax25_call,
1590 dp, AX25_COMMAND, AX25_MODULUS);
1592 skb_set_transport_header(skb, lv);
1594 *skb_transport_header(skb) = AX25_UI;
1596 /* Datagram frames go straight out of the door as UI */
1597 ax25_queue_xmit(skb, ax25->ax25_dev->dev);
1607 static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
1608 struct msghdr *msg, size_t size, int flags)
1610 struct sock *sk = sock->sk;
1611 struct sk_buff *skb;
1617 * This works for seqpacket too. The receiver has ordered the
1618 * queue for us! We do one quick check first though
1620 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_ESTABLISHED) {
1625 /* Now we can treat all alike */
1626 skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
1627 flags & MSG_DONTWAIT, &err);
1631 if (!ax25_sk(sk)->pidincl)
1632 skb_pull(skb, 1); /* Remove PID */
1634 skb_reset_transport_header(skb);
1637 if (copied > size) {
1639 msg->msg_flags |= MSG_TRUNC;
1642 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1644 if (msg->msg_namelen != 0) {
1645 struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
1648 const unsigned char *mac = skb_mac_header(skb);
1650 ax25_addr_parse(mac + 1, skb->data - mac - 1, &src, NULL,
1652 sax->sax25_family = AF_AX25;
1653 /* We set this correctly, even though we may not let the
1654 application know the digi calls further down (because it
1655 did NOT ask to know them). This could get political... **/
1656 sax->sax25_ndigis = digi.ndigi;
1657 sax->sax25_call = src;
1659 if (sax->sax25_ndigis != 0) {
1661 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)sax;
1663 for (ct = 0; ct < digi.ndigi; ct++)
1664 fsa->fsa_digipeater[ct] = digi.calls[ct];
1666 msg->msg_namelen = sizeof(struct full_sockaddr_ax25);
1669 skb_free_datagram(sk, skb);
1678 static int ax25_shutdown(struct socket *sk, int how)
1680 /* FIXME - generate DM and RNR states */
1684 static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1686 struct sock *sk = sock->sk;
1687 void __user *argp = (void __user *)arg;
1695 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
1698 res = put_user(amount, (int __user *)argp);
1703 struct sk_buff *skb;
1705 /* These two are safe on a single CPU system as only user tasks fiddle here */
1706 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1708 res = put_user(amount, (int __user *) argp);
1713 res = sock_get_timestamp(sk, argp);
1717 res = sock_get_timestampns(sk, argp);
1720 case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
1721 case SIOCAX25DELUID: /* Delete a uid from the uid/call map table */
1722 case SIOCAX25GETUID: {
1723 struct sockaddr_ax25 sax25;
1724 if (copy_from_user(&sax25, argp, sizeof(sax25))) {
1728 res = ax25_uid_ioctl(cmd, &sax25);
1732 case SIOCAX25NOUID: { /* Set the default policy (default/bar) */
1734 if (!capable(CAP_NET_ADMIN)) {
1738 if (get_user(amount, (long __user *)argp)) {
1742 if (amount > AX25_NOUID_BLOCK) {
1746 ax25_uid_policy = amount;
1754 if (!capable(CAP_NET_ADMIN)) {
1758 res = ax25_rt_ioctl(cmd, argp);
1761 case SIOCAX25CTLCON:
1762 if (!capable(CAP_NET_ADMIN)) {
1766 res = ax25_ctl_ioctl(cmd, argp);
1769 case SIOCAX25GETINFO:
1770 case SIOCAX25GETINFOOLD: {
1771 ax25_cb *ax25 = ax25_sk(sk);
1772 struct ax25_info_struct ax25_info;
1774 ax25_info.t1 = ax25->t1 / HZ;
1775 ax25_info.t2 = ax25->t2 / HZ;
1776 ax25_info.t3 = ax25->t3 / HZ;
1777 ax25_info.idle = ax25->idle / (60 * HZ);
1778 ax25_info.n2 = ax25->n2;
1779 ax25_info.t1timer = ax25_display_timer(&ax25->t1timer) / HZ;
1780 ax25_info.t2timer = ax25_display_timer(&ax25->t2timer) / HZ;
1781 ax25_info.t3timer = ax25_display_timer(&ax25->t3timer) / HZ;
1782 ax25_info.idletimer = ax25_display_timer(&ax25->idletimer) / (60 * HZ);
1783 ax25_info.n2count = ax25->n2count;
1784 ax25_info.state = ax25->state;
1785 ax25_info.rcv_q = sk_rmem_alloc_get(sk);
1786 ax25_info.snd_q = sk_wmem_alloc_get(sk);
1787 ax25_info.vs = ax25->vs;
1788 ax25_info.vr = ax25->vr;
1789 ax25_info.va = ax25->va;
1790 ax25_info.vs_max = ax25->vs; /* reserved */
1791 ax25_info.paclen = ax25->paclen;
1792 ax25_info.window = ax25->window;
1794 /* old structure? */
1795 if (cmd == SIOCAX25GETINFOOLD) {
1796 static int warned = 0;
1798 printk(KERN_INFO "%s uses old SIOCAX25GETINFO\n",
1803 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct_deprecated))) {
1808 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct))) {
1817 case SIOCAX25ADDFWD:
1818 case SIOCAX25DELFWD: {
1819 struct ax25_fwd_struct ax25_fwd;
1820 if (!capable(CAP_NET_ADMIN)) {
1824 if (copy_from_user(&ax25_fwd, argp, sizeof(ax25_fwd))) {
1828 res = ax25_fwd_ioctl(cmd, &ax25_fwd);
1834 case SIOCGIFDSTADDR:
1835 case SIOCSIFDSTADDR:
1836 case SIOCGIFBRDADDR:
1837 case SIOCSIFBRDADDR:
1838 case SIOCGIFNETMASK:
1839 case SIOCSIFNETMASK:
1854 #ifdef CONFIG_PROC_FS
1856 static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
1857 __acquires(ax25_list_lock)
1859 spin_lock_bh(&ax25_list_lock);
1860 return seq_hlist_start(&ax25_list, *pos);
1863 static void *ax25_info_next(struct seq_file *seq, void *v, loff_t *pos)
1865 return seq_hlist_next(v, &ax25_list, pos);
1868 static void ax25_info_stop(struct seq_file *seq, void *v)
1869 __releases(ax25_list_lock)
1871 spin_unlock_bh(&ax25_list_lock);
1874 static int ax25_info_show(struct seq_file *seq, void *v)
1876 ax25_cb *ax25 = hlist_entry(v, struct ax25_cb, ax25_node);
1883 * 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
1886 seq_printf(seq, "%8.8lx %s %s%s ",
1888 ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
1889 ax2asc(buf, &ax25->source_addr),
1890 ax25->iamdigi? "*":"");
1891 seq_printf(seq, "%s", ax2asc(buf, &ax25->dest_addr));
1893 for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
1894 seq_printf(seq, ",%s%s",
1895 ax2asc(buf, &ax25->digipeat->calls[k]),
1896 ax25->digipeat->repeated[k]? "*":"");
1899 seq_printf(seq, " %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %d %d",
1901 ax25->vs, ax25->vr, ax25->va,
1902 ax25_display_timer(&ax25->t1timer) / HZ, ax25->t1 / HZ,
1903 ax25_display_timer(&ax25->t2timer) / HZ, ax25->t2 / HZ,
1904 ax25_display_timer(&ax25->t3timer) / HZ, ax25->t3 / HZ,
1905 ax25_display_timer(&ax25->idletimer) / (60 * HZ),
1906 ax25->idle / (60 * HZ),
1907 ax25->n2count, ax25->n2,
1912 if (ax25->sk != NULL) {
1913 seq_printf(seq, " %d %d %lu\n",
1914 sk_wmem_alloc_get(ax25->sk),
1915 sk_rmem_alloc_get(ax25->sk),
1916 sock_i_ino(ax25->sk));
1918 seq_puts(seq, " * * *\n");
1923 static const struct seq_operations ax25_info_seqops = {
1924 .start = ax25_info_start,
1925 .next = ax25_info_next,
1926 .stop = ax25_info_stop,
1927 .show = ax25_info_show,
1930 static int ax25_info_open(struct inode *inode, struct file *file)
1932 return seq_open(file, &ax25_info_seqops);
1935 static const struct file_operations ax25_info_fops = {
1936 .owner = THIS_MODULE,
1937 .open = ax25_info_open,
1939 .llseek = seq_lseek,
1940 .release = seq_release,
1945 static const struct net_proto_family ax25_family_ops = {
1947 .create = ax25_create,
1948 .owner = THIS_MODULE,
1951 static const struct proto_ops ax25_proto_ops = {
1953 .owner = THIS_MODULE,
1954 .release = ax25_release,
1956 .connect = ax25_connect,
1957 .socketpair = sock_no_socketpair,
1958 .accept = ax25_accept,
1959 .getname = ax25_getname,
1960 .poll = datagram_poll,
1961 .ioctl = ax25_ioctl,
1962 .listen = ax25_listen,
1963 .shutdown = ax25_shutdown,
1964 .setsockopt = ax25_setsockopt,
1965 .getsockopt = ax25_getsockopt,
1966 .sendmsg = ax25_sendmsg,
1967 .recvmsg = ax25_recvmsg,
1968 .mmap = sock_no_mmap,
1969 .sendpage = sock_no_sendpage,
1973 * Called by socket.c on kernel start up
1975 static struct packet_type ax25_packet_type __read_mostly = {
1976 .type = cpu_to_be16(ETH_P_AX25),
1977 .func = ax25_kiss_rcv,
1980 static struct notifier_block ax25_dev_notifier = {
1981 .notifier_call =ax25_device_event,
1984 static int __init ax25_init(void)
1986 int rc = proto_register(&ax25_proto, 0);
1991 sock_register(&ax25_family_ops);
1992 dev_add_pack(&ax25_packet_type);
1993 register_netdevice_notifier(&ax25_dev_notifier);
1995 proc_net_fops_create(&init_net, "ax25_route", S_IRUGO, &ax25_route_fops);
1996 proc_net_fops_create(&init_net, "ax25", S_IRUGO, &ax25_info_fops);
1997 proc_net_fops_create(&init_net, "ax25_calls", S_IRUGO, &ax25_uid_fops);
2001 module_init(ax25_init);
2004 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
2005 MODULE_DESCRIPTION("The amateur radio AX.25 link layer protocol");
2006 MODULE_LICENSE("GPL");
2007 MODULE_ALIAS_NETPROTO(PF_AX25);
2009 static void __exit ax25_exit(void)
2011 proc_net_remove(&init_net, "ax25_route");
2012 proc_net_remove(&init_net, "ax25");
2013 proc_net_remove(&init_net, "ax25_calls");
2015 unregister_netdevice_notifier(&ax25_dev_notifier);
2017 dev_remove_pack(&ax25_packet_type);
2019 sock_unregister(PF_AX25);
2020 proto_unregister(&ax25_proto);
2026 module_exit(ax25_exit);