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/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 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);
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(&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(&ax25_list_lock);
162 spin_unlock(&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(&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(&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 EXPORT_SYMBOL(ax25_find_cb);
232 void ax25_send_to_raw(ax25_address *addr, struct sk_buff *skb, int proto)
235 struct sk_buff *copy;
236 struct hlist_node *node;
238 spin_lock(&ax25_list_lock);
239 ax25_for_each(s, node, &ax25_list) {
240 if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 &&
241 s->sk->sk_type == SOCK_RAW &&
242 s->sk->sk_protocol == proto &&
243 s->ax25_dev->dev == skb->dev &&
244 atomic_read(&s->sk->sk_rmem_alloc) <= s->sk->sk_rcvbuf) {
245 if ((copy = skb_clone(skb, GFP_ATOMIC)) == NULL)
247 if (sock_queue_rcv_skb(s->sk, copy) != 0)
251 spin_unlock(&ax25_list_lock);
257 void ax25_destroy_socket(ax25_cb *);
260 * Handler for deferred kills.
262 static void ax25_destroy_timer(unsigned long data)
264 ax25_cb *ax25=(ax25_cb *)data;
271 ax25_destroy_socket(ax25);
277 * This is called from user mode and the timers. Thus it protects itself
278 * against interrupt users but doesn't worry about being called during
279 * work. Once it is removed from the queue no interrupt or bottom half
280 * will touch it and we are (fairly 8-) ) safe.
282 void ax25_destroy_socket(ax25_cb *ax25)
288 ax25_stop_heartbeat(ax25);
289 ax25_stop_t1timer(ax25);
290 ax25_stop_t2timer(ax25);
291 ax25_stop_t3timer(ax25);
292 ax25_stop_idletimer(ax25);
294 ax25_clear_queues(ax25); /* Flush the queues */
296 if (ax25->sk != NULL) {
297 while ((skb = skb_dequeue(&ax25->sk->sk_receive_queue)) != NULL) {
298 if (skb->sk != ax25->sk) {
299 /* A pending connection */
300 ax25_cb *sax25 = ax25_sk(skb->sk);
302 /* Queue the unaccepted socket for death */
303 sock_orphan(skb->sk);
305 ax25_start_heartbeat(sax25);
306 sax25->state = AX25_STATE_0;
311 skb_queue_purge(&ax25->sk->sk_write_queue);
314 if (ax25->sk != NULL) {
315 if (atomic_read(&ax25->sk->sk_wmem_alloc) ||
316 atomic_read(&ax25->sk->sk_rmem_alloc)) {
317 /* Defer: outstanding buffers */
318 init_timer(&ax25->dtimer);
319 ax25->dtimer.expires = jiffies + 2 * HZ;
320 ax25->dtimer.function = ax25_destroy_timer;
321 ax25->dtimer.data = (unsigned long)ax25;
322 add_timer(&ax25->dtimer);
324 struct sock *sk=ax25->sk;
334 * dl1bke 960311: set parameters for existing AX.25 connections,
335 * includes a KILL command to abort any connection.
336 * VERY useful for debugging ;-)
338 static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
340 struct ax25_ctl_struct ax25_ctl;
346 if (copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl)))
349 if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
352 if (ax25_ctl.digi_count > AX25_MAX_DIGIS)
355 digi.ndigi = ax25_ctl.digi_count;
356 for (k = 0; k < digi.ndigi; k++)
357 digi.calls[k] = ax25_ctl.digi_addr[k];
359 if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, &digi, ax25_dev->dev)) == NULL)
362 switch (ax25_ctl.cmd) {
364 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
365 #ifdef CONFIG_AX25_DAMA_SLAVE
366 if (ax25_dev->dama.slave && ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
369 ax25_disconnect(ax25, ENETRESET);
373 if (ax25->modulus == AX25_MODULUS) {
374 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
377 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
380 ax25->window = ax25_ctl.arg;
384 if (ax25_ctl.arg < 1)
386 ax25->rtt = (ax25_ctl.arg * HZ) / 2;
387 ax25->t1 = ax25_ctl.arg * HZ;
391 if (ax25_ctl.arg < 1)
393 ax25->t2 = ax25_ctl.arg * HZ;
397 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
400 ax25->n2 = ax25_ctl.arg;
404 if (ax25_ctl.arg < 0)
406 ax25->t3 = ax25_ctl.arg * HZ;
410 if (ax25_ctl.arg < 0)
412 ax25->idle = ax25_ctl.arg * 60 * HZ;
416 if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
418 ax25->paclen = ax25_ctl.arg;
428 static void ax25_fillin_cb_from_dev(ax25_cb *ax25, ax25_dev *ax25_dev)
430 ax25->rtt = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]) / 2;
431 ax25->t1 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]);
432 ax25->t2 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T2]);
433 ax25->t3 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T3]);
434 ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
435 ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
436 ax25->idle = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_IDLE]);
437 ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
439 if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
440 ax25->modulus = AX25_EMODULUS;
441 ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
443 ax25->modulus = AX25_MODULUS;
444 ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
449 * Fill in a created AX.25 created control block with the default
450 * values for a particular device.
452 void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
454 ax25->ax25_dev = ax25_dev;
456 if (ax25->ax25_dev != NULL) {
457 ax25_fillin_cb_from_dev(ax25, ax25_dev);
462 * No device, use kernel / AX.25 spec default values
464 ax25->rtt = msecs_to_jiffies(AX25_DEF_T1) / 2;
465 ax25->t1 = msecs_to_jiffies(AX25_DEF_T1);
466 ax25->t2 = msecs_to_jiffies(AX25_DEF_T2);
467 ax25->t3 = msecs_to_jiffies(AX25_DEF_T3);
468 ax25->n2 = AX25_DEF_N2;
469 ax25->paclen = AX25_DEF_PACLEN;
470 ax25->idle = msecs_to_jiffies(AX25_DEF_IDLE);
471 ax25->backoff = AX25_DEF_BACKOFF;
473 if (AX25_DEF_AXDEFMODE) {
474 ax25->modulus = AX25_EMODULUS;
475 ax25->window = AX25_DEF_EWINDOW;
477 ax25->modulus = AX25_MODULUS;
478 ax25->window = AX25_DEF_WINDOW;
483 * Create an empty AX.25 control block.
485 ax25_cb *ax25_create_cb(void)
489 if ((ax25 = kzalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
492 atomic_set(&ax25->refcount, 1);
494 skb_queue_head_init(&ax25->write_queue);
495 skb_queue_head_init(&ax25->frag_queue);
496 skb_queue_head_init(&ax25->ack_queue);
497 skb_queue_head_init(&ax25->reseq_queue);
499 init_timer(&ax25->timer);
500 init_timer(&ax25->t1timer);
501 init_timer(&ax25->t2timer);
502 init_timer(&ax25->t3timer);
503 init_timer(&ax25->idletimer);
505 ax25_fillin_cb(ax25, NULL);
507 ax25->state = AX25_STATE_0;
513 * Handling for system calls applied via the various interfaces to an
517 static int ax25_setsockopt(struct socket *sock, int level, int optname,
518 char __user *optval, int optlen)
520 struct sock *sk = sock->sk;
522 struct net_device *dev;
523 char devname[IFNAMSIZ];
526 if (level != SOL_AX25)
529 if (optlen < sizeof(int))
532 if (get_user(opt, (int __user *)optval))
540 if (ax25->modulus == AX25_MODULUS) {
541 if (opt < 1 || opt > 7) {
546 if (opt < 1 || opt > 63) {
559 ax25->rtt = (opt * HZ) / 2;
572 if (opt < 1 || opt > 31) {
592 ax25->idle = opt * 60 * HZ;
596 if (opt < 0 || opt > 2) {
604 ax25->modulus = opt ? AX25_EMODULUS : AX25_MODULUS;
608 ax25->pidincl = opt ? 1 : 0;
612 ax25->iamdigi = opt ? 1 : 0;
616 if (opt < 16 || opt > 65535) {
623 case SO_BINDTODEVICE:
624 if (optlen > IFNAMSIZ)
626 if (copy_from_user(devname, optval, optlen)) {
631 dev = dev_get_by_name(devname);
637 if (sk->sk_type == SOCK_SEQPACKET &&
638 (sock->state != SS_UNCONNECTED ||
639 sk->sk_state == TCP_LISTEN)) {
640 res = -EADDRNOTAVAIL;
645 ax25->ax25_dev = ax25_dev_ax25dev(dev);
646 ax25_fillin_cb(ax25, ax25->ax25_dev);
657 static int ax25_getsockopt(struct socket *sock, int level, int optname,
658 char __user *optval, int __user *optlen)
660 struct sock *sk = sock->sk;
662 struct ax25_dev *ax25_dev;
663 char devname[IFNAMSIZ];
668 if (level != SOL_AX25)
671 if (get_user(maxlen, optlen))
677 valptr = (void *) &val;
678 length = min_t(unsigned int, maxlen, sizeof(int));
705 val = ax25->idle / (60 * HZ);
713 val = (ax25->modulus == AX25_EMODULUS);
728 case SO_BINDTODEVICE:
729 ax25_dev = ax25->ax25_dev;
731 if (ax25_dev != NULL && ax25_dev->dev != NULL) {
732 strlcpy(devname, ax25_dev->dev->name, sizeof(devname));
733 length = strlen(devname) + 1;
739 valptr = (void *) devname;
748 if (put_user(length, optlen))
751 return copy_to_user(optval, valptr, length) ? -EFAULT : 0;
754 static int ax25_listen(struct socket *sock, int backlog)
756 struct sock *sk = sock->sk;
760 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_LISTEN) {
761 sk->sk_max_ack_backlog = backlog;
762 sk->sk_state = TCP_LISTEN;
774 * XXX: when creating ax25_sock we should update the .obj_size setting
777 static struct proto ax25_proto = {
779 .owner = THIS_MODULE,
780 .obj_size = sizeof(struct sock),
783 static int ax25_create(struct socket *sock, int protocol)
788 switch (sock->type) {
790 if (protocol == 0 || protocol == PF_AX25)
791 protocol = AX25_P_TEXT;
797 case PF_AX25: /* For CLX */
798 protocol = AX25_P_TEXT;
811 return -ESOCKTNOSUPPORT;
812 #ifdef CONFIG_NETROM_MODULE
814 if (ax25_protocol_is_registered(AX25_P_NETROM))
815 return -ESOCKTNOSUPPORT;
817 #ifdef CONFIG_ROSE_MODULE
819 if (ax25_protocol_is_registered(AX25_P_ROSE))
820 return -ESOCKTNOSUPPORT;
830 return -ESOCKTNOSUPPORT;
833 if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, &ax25_proto, 1)) == NULL)
836 ax25 = sk->sk_protinfo = ax25_create_cb();
842 sock_init_data(sock, sk);
844 sk->sk_destruct = ax25_free_sock;
845 sock->ops = &ax25_proto_ops;
846 sk->sk_protocol = protocol;
853 struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
856 ax25_cb *ax25, *oax25;
858 if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, osk->sk_prot, 1)) == NULL)
861 if ((ax25 = ax25_create_cb()) == NULL) {
866 switch (osk->sk_type) {
877 sock_init_data(NULL, sk);
879 sk->sk_destruct = ax25_free_sock;
880 sk->sk_type = osk->sk_type;
881 sk->sk_socket = osk->sk_socket;
882 sk->sk_priority = osk->sk_priority;
883 sk->sk_protocol = osk->sk_protocol;
884 sk->sk_rcvbuf = osk->sk_rcvbuf;
885 sk->sk_sndbuf = osk->sk_sndbuf;
886 sk->sk_state = TCP_ESTABLISHED;
887 sk->sk_sleep = osk->sk_sleep;
888 sock_copy_flags(sk, osk);
890 oax25 = ax25_sk(osk);
892 ax25->modulus = oax25->modulus;
893 ax25->backoff = oax25->backoff;
894 ax25->pidincl = oax25->pidincl;
895 ax25->iamdigi = oax25->iamdigi;
896 ax25->rtt = oax25->rtt;
897 ax25->t1 = oax25->t1;
898 ax25->t2 = oax25->t2;
899 ax25->t3 = oax25->t3;
900 ax25->n2 = oax25->n2;
901 ax25->idle = oax25->idle;
902 ax25->paclen = oax25->paclen;
903 ax25->window = oax25->window;
905 ax25->ax25_dev = ax25_dev;
906 ax25->source_addr = oax25->source_addr;
908 if (oax25->digipeat != NULL) {
909 ax25->digipeat = kmemdup(oax25->digipeat, sizeof(ax25_digi),
911 if (ax25->digipeat == NULL) {
918 sk->sk_protinfo = ax25;
924 static int ax25_release(struct socket *sock)
926 struct sock *sk = sock->sk;
937 if (sk->sk_type == SOCK_SEQPACKET) {
938 switch (ax25->state) {
941 ax25_disconnect(ax25, 0);
943 ax25_destroy_socket(ax25);
948 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
950 ax25_disconnect(ax25, 0);
952 ax25_destroy_socket(ax25);
957 ax25_clear_queues(ax25);
960 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
961 case AX25_PROTO_STD_SIMPLEX:
962 case AX25_PROTO_STD_DUPLEX:
963 ax25_send_control(ax25,
967 ax25_stop_t2timer(ax25);
968 ax25_stop_t3timer(ax25);
969 ax25_stop_idletimer(ax25);
971 #ifdef CONFIG_AX25_DAMA_SLAVE
972 case AX25_PROTO_DAMA_SLAVE:
973 ax25_stop_t3timer(ax25);
974 ax25_stop_idletimer(ax25);
978 ax25_calculate_t1(ax25);
979 ax25_start_t1timer(ax25);
980 ax25->state = AX25_STATE_2;
981 sk->sk_state = TCP_CLOSE;
982 sk->sk_shutdown |= SEND_SHUTDOWN;
983 sk->sk_state_change(sk);
984 sock_set_flag(sk, SOCK_DESTROY);
991 sk->sk_state = TCP_CLOSE;
992 sk->sk_shutdown |= SEND_SHUTDOWN;
993 sk->sk_state_change(sk);
994 ax25_destroy_socket(ax25);
1005 * We support a funny extension here so you can (as root) give any callsign
1006 * digipeated via a local address as source. This hack is obsolete now
1007 * that we've implemented support for SO_BINDTODEVICE. It is however small
1008 * and trivially backward compatible.
1010 static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
1012 struct sock *sk = sock->sk;
1013 struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
1014 ax25_dev *ax25_dev = NULL;
1015 ax25_uid_assoc *user;
1020 if (addr_len != sizeof(struct sockaddr_ax25) &&
1021 addr_len != sizeof(struct full_sockaddr_ax25)) {
1022 /* support for old structure may go away some time */
1023 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1024 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1028 printk(KERN_WARNING "ax25_bind(): %s uses old (6 digipeater) socket structure.\n",
1032 if (addr->fsa_ax25.sax25_family != AF_AX25)
1035 user = ax25_findbyuid(current->euid);
1040 if (ax25_uid_policy && !capable(CAP_NET_ADMIN))
1043 call = addr->fsa_ax25.sax25_call;
1049 if (!sock_flag(sk, SOCK_ZAPPED)) {
1054 ax25->source_addr = call;
1057 * User already set interface with SO_BINDTODEVICE
1059 if (ax25->ax25_dev != NULL)
1062 if (addr_len > sizeof(struct sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
1063 if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) != 0 &&
1064 (ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL) {
1065 err = -EADDRNOTAVAIL;
1069 if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL) {
1070 err = -EADDRNOTAVAIL;
1075 if (ax25_dev != NULL)
1076 ax25_fillin_cb(ax25, ax25_dev);
1080 sock_reset_flag(sk, SOCK_ZAPPED);
1089 * FIXME: nonblock behaviour looks like it may have a bug.
1091 static int __must_check ax25_connect(struct socket *sock,
1092 struct sockaddr *uaddr, int addr_len, int flags)
1094 struct sock *sk = sock->sk;
1095 ax25_cb *ax25 = ax25_sk(sk), *ax25t;
1096 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1097 ax25_digi *digi = NULL;
1098 int ct = 0, err = 0;
1101 * some sanity checks. code further down depends on this
1104 if (addr_len == sizeof(struct sockaddr_ax25)) {
1105 /* support for this will go away in early 2.5.x */
1106 printk(KERN_WARNING "ax25_connect(): %s uses obsolete socket structure\n",
1109 else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
1110 /* support for old structure may go away some time */
1111 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1112 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1116 printk(KERN_WARNING "ax25_connect(): %s uses old (6 digipeater) socket structure.\n",
1120 if (fsa->fsa_ax25.sax25_family != AF_AX25)
1125 /* deal with restarts */
1126 if (sock->state == SS_CONNECTING) {
1127 switch (sk->sk_state) {
1128 case TCP_SYN_SENT: /* still trying */
1132 case TCP_ESTABLISHED: /* connection established */
1133 sock->state = SS_CONNECTED;
1136 case TCP_CLOSE: /* connection refused */
1137 sock->state = SS_UNCONNECTED;
1138 err = -ECONNREFUSED;
1143 if (sk->sk_state == TCP_ESTABLISHED && sk->sk_type == SOCK_SEQPACKET) {
1144 err = -EISCONN; /* No reconnect on a seqpacket socket */
1148 sk->sk_state = TCP_CLOSE;
1149 sock->state = SS_UNCONNECTED;
1151 kfree(ax25->digipeat);
1152 ax25->digipeat = NULL;
1155 * Handle digi-peaters to be used.
1157 if (addr_len > sizeof(struct sockaddr_ax25) &&
1158 fsa->fsa_ax25.sax25_ndigis != 0) {
1159 /* Valid number of digipeaters ? */
1160 if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS) {
1165 if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL) {
1170 digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
1171 digi->lastrepeat = -1;
1173 while (ct < fsa->fsa_ax25.sax25_ndigis) {
1174 if ((fsa->fsa_digipeater[ct].ax25_call[6] &
1175 AX25_HBIT) && ax25->iamdigi) {
1176 digi->repeated[ct] = 1;
1177 digi->lastrepeat = ct;
1179 digi->repeated[ct] = 0;
1181 digi->calls[ct] = fsa->fsa_digipeater[ct];
1187 * Must bind first - autobinding in this may or may not work. If
1188 * the socket is already bound, check to see if the device has
1189 * been filled in, error if it hasn't.
1191 if (sock_flag(sk, SOCK_ZAPPED)) {
1192 /* check if we can remove this feature. It is broken. */
1193 printk(KERN_WARNING "ax25_connect(): %s uses autobind, please contact jreuter@yaina.de\n",
1195 if ((err = ax25_rt_autobind(ax25, &fsa->fsa_ax25.sax25_call)) < 0) {
1200 ax25_fillin_cb(ax25, ax25->ax25_dev);
1203 if (ax25->ax25_dev == NULL) {
1205 err = -EHOSTUNREACH;
1210 if (sk->sk_type == SOCK_SEQPACKET &&
1211 (ax25t=ax25_find_cb(&ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi,
1212 ax25->ax25_dev->dev))) {
1214 err = -EADDRINUSE; /* Already such a connection */
1219 ax25->dest_addr = fsa->fsa_ax25.sax25_call;
1220 ax25->digipeat = digi;
1222 /* First the easy one */
1223 if (sk->sk_type != SOCK_SEQPACKET) {
1224 sock->state = SS_CONNECTED;
1225 sk->sk_state = TCP_ESTABLISHED;
1229 /* Move to connecting socket, ax.25 lapb WAIT_UA.. */
1230 sock->state = SS_CONNECTING;
1231 sk->sk_state = TCP_SYN_SENT;
1233 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
1234 case AX25_PROTO_STD_SIMPLEX:
1235 case AX25_PROTO_STD_DUPLEX:
1236 ax25_std_establish_data_link(ax25);
1239 #ifdef CONFIG_AX25_DAMA_SLAVE
1240 case AX25_PROTO_DAMA_SLAVE:
1241 ax25->modulus = AX25_MODULUS;
1242 ax25->window = ax25->ax25_dev->values[AX25_VALUES_WINDOW];
1243 if (ax25->ax25_dev->dama.slave)
1244 ax25_ds_establish_data_link(ax25);
1246 ax25_std_establish_data_link(ax25);
1251 ax25->state = AX25_STATE_1;
1253 ax25_start_heartbeat(ax25);
1256 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
1261 if (sk->sk_state == TCP_SYN_SENT) {
1265 prepare_to_wait(sk->sk_sleep, &wait,
1266 TASK_INTERRUPTIBLE);
1267 if (sk->sk_state != TCP_SYN_SENT)
1269 if (!signal_pending(current)) {
1278 finish_wait(sk->sk_sleep, &wait);
1284 if (sk->sk_state != TCP_ESTABLISHED) {
1285 /* Not in ABM, not in WAIT_UA -> failed */
1286 sock->state = SS_UNCONNECTED;
1287 err = sock_error(sk); /* Always set at this point */
1291 sock->state = SS_CONNECTED;
1300 static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
1302 struct sk_buff *skb;
1308 if (sock->state != SS_UNCONNECTED)
1311 if ((sk = sock->sk) == NULL)
1315 if (sk->sk_type != SOCK_SEQPACKET) {
1320 if (sk->sk_state != TCP_LISTEN) {
1326 * The read queue this time is holding sockets ready to use
1327 * hooked into the SABM we saved
1330 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
1331 skb = skb_dequeue(&sk->sk_receive_queue);
1335 if (flags & O_NONBLOCK) {
1339 if (!signal_pending(current)) {
1348 finish_wait(sk->sk_sleep, &wait);
1354 newsk->sk_socket = newsock;
1355 newsk->sk_sleep = &newsock->wait;
1357 /* Now attach up the new socket */
1359 sk->sk_ack_backlog--;
1360 newsock->sk = newsk;
1361 newsock->state = SS_CONNECTED;
1369 static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
1370 int *uaddr_len, int peer)
1372 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1373 struct sock *sk = sock->sk;
1374 unsigned char ndigi, i;
1382 if (sk->sk_state != TCP_ESTABLISHED) {
1387 fsa->fsa_ax25.sax25_family = AF_AX25;
1388 fsa->fsa_ax25.sax25_call = ax25->dest_addr;
1389 fsa->fsa_ax25.sax25_ndigis = 0;
1391 if (ax25->digipeat != NULL) {
1392 ndigi = ax25->digipeat->ndigi;
1393 fsa->fsa_ax25.sax25_ndigis = ndigi;
1394 for (i = 0; i < ndigi; i++)
1395 fsa->fsa_digipeater[i] =
1396 ax25->digipeat->calls[i];
1399 fsa->fsa_ax25.sax25_family = AF_AX25;
1400 fsa->fsa_ax25.sax25_call = ax25->source_addr;
1401 fsa->fsa_ax25.sax25_ndigis = 1;
1402 if (ax25->ax25_dev != NULL) {
1403 memcpy(&fsa->fsa_digipeater[0],
1404 ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
1406 fsa->fsa_digipeater[0] = null_ax25_address;
1409 *uaddr_len = sizeof (struct full_sockaddr_ax25);
1417 static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
1418 struct msghdr *msg, size_t len)
1420 struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
1421 struct sock *sk = sock->sk;
1422 struct sockaddr_ax25 sax;
1423 struct sk_buff *skb;
1424 ax25_digi dtmp, *dp;
1427 int lv, err, addr_len = msg->msg_namelen;
1429 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1435 if (sock_flag(sk, SOCK_ZAPPED)) {
1436 err = -EADDRNOTAVAIL;
1440 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1441 send_sig(SIGPIPE, current, 0);
1446 if (ax25->ax25_dev == NULL) {
1451 if (len > ax25->ax25_dev->dev->mtu) {
1457 if (usax->sax25_family != AF_AX25) {
1462 if (addr_len == sizeof(struct sockaddr_ax25)) {
1463 printk(KERN_WARNING "ax25_sendmsg(): %s uses obsolete socket structure\n",
1466 else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
1467 /* support for old structure may go away some time */
1468 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1469 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1474 printk(KERN_WARNING "ax25_sendmsg(): %s uses old (6 digipeater) socket structure.\n",
1478 if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
1480 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)usax;
1482 /* Valid number of digipeaters ? */
1483 if (usax->sax25_ndigis < 1 || usax->sax25_ndigis > AX25_MAX_DIGIS) {
1488 dtmp.ndigi = usax->sax25_ndigis;
1490 while (ct < usax->sax25_ndigis) {
1491 dtmp.repeated[ct] = 0;
1492 dtmp.calls[ct] = fsa->fsa_digipeater[ct];
1496 dtmp.lastrepeat = 0;
1500 if (sk->sk_type == SOCK_SEQPACKET &&
1501 ax25cmp(&ax25->dest_addr, &sax.sax25_call)) {
1505 if (usax->sax25_ndigis == 0)
1511 * FIXME: 1003.1g - if the socket is like this because
1512 * it has become closed (not started closed) and is VC
1513 * we ought to SIGPIPE, EPIPE
1515 if (sk->sk_state != TCP_ESTABLISHED) {
1519 sax.sax25_family = AF_AX25;
1520 sax.sax25_call = ax25->dest_addr;
1521 dp = ax25->digipeat;
1524 SOCK_DEBUG(sk, "AX.25: sendto: Addresses built.\n");
1526 /* Build a packet */
1527 SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n");
1529 /* Assume the worst case */
1530 size = len + ax25->ax25_dev->dev->hard_header_len;
1532 skb = sock_alloc_send_skb(sk, size, msg->msg_flags&MSG_DONTWAIT, &err);
1536 skb_reserve(skb, size - len);
1538 SOCK_DEBUG(sk, "AX.25: Appending user data\n");
1540 /* User data follows immediately after the AX.25 data */
1541 if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
1547 skb_reset_network_header(skb);
1549 /* Add the PID if one is not supplied by the user in the skb */
1551 *skb_push(skb, 1) = sk->sk_protocol;
1553 SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
1555 if (sk->sk_type == SOCK_SEQPACKET) {
1556 /* Connected mode sockets go via the LAPB machine */
1557 if (sk->sk_state != TCP_ESTABLISHED) {
1563 /* Shove it onto the queue and kick */
1564 ax25_output(ax25, ax25->paclen, skb);
1570 skb_push(skb, 1 + ax25_addr_size(dp));
1572 SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
1575 SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
1577 /* Build an AX.25 header */
1578 lv = ax25_addr_build(skb->data, &ax25->source_addr, &sax.sax25_call,
1579 dp, AX25_COMMAND, AX25_MODULUS);
1581 SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
1583 skb_set_transport_header(skb, lv);
1585 SOCK_DEBUG(sk, "base=%p pos=%p\n",
1586 skb->data, skb_transport_header(skb));
1588 *skb_transport_header(skb) = AX25_UI;
1590 /* Datagram frames go straight out of the door as UI */
1591 ax25_queue_xmit(skb, ax25->ax25_dev->dev);
1601 static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
1602 struct msghdr *msg, size_t size, int flags)
1604 struct sock *sk = sock->sk;
1605 struct sk_buff *skb;
1611 * This works for seqpacket too. The receiver has ordered the
1612 * queue for us! We do one quick check first though
1614 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_ESTABLISHED) {
1619 /* Now we can treat all alike */
1620 skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
1621 flags & MSG_DONTWAIT, &err);
1625 if (!ax25_sk(sk)->pidincl)
1626 skb_pull(skb, 1); /* Remove PID */
1628 skb_reset_transport_header(skb);
1631 if (copied > size) {
1633 msg->msg_flags |= MSG_TRUNC;
1636 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1638 if (msg->msg_namelen != 0) {
1639 struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
1642 const unsigned char *mac = skb_mac_header(skb);
1644 ax25_addr_parse(mac + 1, skb->data - mac - 1, &src, NULL,
1646 sax->sax25_family = AF_AX25;
1647 /* We set this correctly, even though we may not let the
1648 application know the digi calls further down (because it
1649 did NOT ask to know them). This could get political... **/
1650 sax->sax25_ndigis = digi.ndigi;
1651 sax->sax25_call = src;
1653 if (sax->sax25_ndigis != 0) {
1655 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)sax;
1657 for (ct = 0; ct < digi.ndigi; ct++)
1658 fsa->fsa_digipeater[ct] = digi.calls[ct];
1660 msg->msg_namelen = sizeof(struct full_sockaddr_ax25);
1663 skb_free_datagram(sk, skb);
1672 static int ax25_shutdown(struct socket *sk, int how)
1674 /* FIXME - generate DM and RNR states */
1678 static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1680 struct sock *sk = sock->sk;
1681 void __user *argp = (void __user *)arg;
1688 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
1691 res = put_user(amount, (int __user *)argp);
1696 struct sk_buff *skb;
1698 /* These two are safe on a single CPU system as only user tasks fiddle here */
1699 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1701 res = put_user(amount, (int __user *) argp);
1706 res = sock_get_timestamp(sk, argp);
1710 res = sock_get_timestampns(sk, argp);
1713 case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
1714 case SIOCAX25DELUID: /* Delete a uid from the uid/call map table */
1715 case SIOCAX25GETUID: {
1716 struct sockaddr_ax25 sax25;
1717 if (copy_from_user(&sax25, argp, sizeof(sax25))) {
1721 res = ax25_uid_ioctl(cmd, &sax25);
1725 case SIOCAX25NOUID: { /* Set the default policy (default/bar) */
1727 if (!capable(CAP_NET_ADMIN)) {
1731 if (get_user(amount, (long __user *)argp)) {
1735 if (amount > AX25_NOUID_BLOCK) {
1739 ax25_uid_policy = amount;
1747 if (!capable(CAP_NET_ADMIN)) {
1751 res = ax25_rt_ioctl(cmd, argp);
1754 case SIOCAX25CTLCON:
1755 if (!capable(CAP_NET_ADMIN)) {
1759 res = ax25_ctl_ioctl(cmd, argp);
1762 case SIOCAX25GETINFO:
1763 case SIOCAX25GETINFOOLD: {
1764 ax25_cb *ax25 = ax25_sk(sk);
1765 struct ax25_info_struct ax25_info;
1767 ax25_info.t1 = ax25->t1 / HZ;
1768 ax25_info.t2 = ax25->t2 / HZ;
1769 ax25_info.t3 = ax25->t3 / HZ;
1770 ax25_info.idle = ax25->idle / (60 * HZ);
1771 ax25_info.n2 = ax25->n2;
1772 ax25_info.t1timer = ax25_display_timer(&ax25->t1timer) / HZ;
1773 ax25_info.t2timer = ax25_display_timer(&ax25->t2timer) / HZ;
1774 ax25_info.t3timer = ax25_display_timer(&ax25->t3timer) / HZ;
1775 ax25_info.idletimer = ax25_display_timer(&ax25->idletimer) / (60 * HZ);
1776 ax25_info.n2count = ax25->n2count;
1777 ax25_info.state = ax25->state;
1778 ax25_info.rcv_q = atomic_read(&sk->sk_rmem_alloc);
1779 ax25_info.snd_q = atomic_read(&sk->sk_wmem_alloc);
1780 ax25_info.vs = ax25->vs;
1781 ax25_info.vr = ax25->vr;
1782 ax25_info.va = ax25->va;
1783 ax25_info.vs_max = ax25->vs; /* reserved */
1784 ax25_info.paclen = ax25->paclen;
1785 ax25_info.window = ax25->window;
1787 /* old structure? */
1788 if (cmd == SIOCAX25GETINFOOLD) {
1789 static int warned = 0;
1791 printk(KERN_INFO "%s uses old SIOCAX25GETINFO\n",
1796 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct_deprecated))) {
1801 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct))) {
1810 case SIOCAX25ADDFWD:
1811 case SIOCAX25DELFWD: {
1812 struct ax25_fwd_struct ax25_fwd;
1813 if (!capable(CAP_NET_ADMIN)) {
1817 if (copy_from_user(&ax25_fwd, argp, sizeof(ax25_fwd))) {
1821 res = ax25_fwd_ioctl(cmd, &ax25_fwd);
1827 case SIOCGIFDSTADDR:
1828 case SIOCSIFDSTADDR:
1829 case SIOCGIFBRDADDR:
1830 case SIOCSIFBRDADDR:
1831 case SIOCGIFNETMASK:
1832 case SIOCSIFNETMASK:
1847 #ifdef CONFIG_PROC_FS
1849 static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
1851 struct ax25_cb *ax25;
1852 struct hlist_node *node;
1855 spin_lock_bh(&ax25_list_lock);
1856 ax25_for_each(ax25, node, &ax25_list) {
1864 static void *ax25_info_next(struct seq_file *seq, void *v, loff_t *pos)
1868 return hlist_entry( ((struct ax25_cb *)v)->ax25_node.next,
1869 struct ax25_cb, ax25_node);
1872 static void ax25_info_stop(struct seq_file *seq, void *v)
1874 spin_unlock_bh(&ax25_list_lock);
1877 static int ax25_info_show(struct seq_file *seq, void *v)
1886 * 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
1889 seq_printf(seq, "%8.8lx %s %s%s ",
1891 ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
1892 ax2asc(buf, &ax25->source_addr),
1893 ax25->iamdigi? "*":"");
1894 seq_printf(seq, "%s", ax2asc(buf, &ax25->dest_addr));
1896 for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
1897 seq_printf(seq, ",%s%s",
1898 ax2asc(buf, &ax25->digipeat->calls[k]),
1899 ax25->digipeat->repeated[k]? "*":"");
1902 seq_printf(seq, " %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %d %d",
1904 ax25->vs, ax25->vr, ax25->va,
1905 ax25_display_timer(&ax25->t1timer) / HZ, ax25->t1 / HZ,
1906 ax25_display_timer(&ax25->t2timer) / HZ, ax25->t2 / HZ,
1907 ax25_display_timer(&ax25->t3timer) / HZ, ax25->t3 / HZ,
1908 ax25_display_timer(&ax25->idletimer) / (60 * HZ),
1909 ax25->idle / (60 * HZ),
1910 ax25->n2count, ax25->n2,
1915 if (ax25->sk != NULL) {
1916 bh_lock_sock(ax25->sk);
1917 seq_printf(seq," %d %d %ld\n",
1918 atomic_read(&ax25->sk->sk_wmem_alloc),
1919 atomic_read(&ax25->sk->sk_rmem_alloc),
1920 ax25->sk->sk_socket != NULL ? SOCK_INODE(ax25->sk->sk_socket)->i_ino : 0L);
1921 bh_unlock_sock(ax25->sk);
1923 seq_puts(seq, " * * *\n");
1928 static struct seq_operations ax25_info_seqops = {
1929 .start = ax25_info_start,
1930 .next = ax25_info_next,
1931 .stop = ax25_info_stop,
1932 .show = ax25_info_show,
1935 static int ax25_info_open(struct inode *inode, struct file *file)
1937 return seq_open(file, &ax25_info_seqops);
1940 static const struct file_operations ax25_info_fops = {
1941 .owner = THIS_MODULE,
1942 .open = ax25_info_open,
1944 .llseek = seq_lseek,
1945 .release = seq_release,
1950 static struct net_proto_family ax25_family_ops = {
1952 .create = ax25_create,
1953 .owner = THIS_MODULE,
1956 static const struct proto_ops ax25_proto_ops = {
1958 .owner = THIS_MODULE,
1959 .release = ax25_release,
1961 .connect = ax25_connect,
1962 .socketpair = sock_no_socketpair,
1963 .accept = ax25_accept,
1964 .getname = ax25_getname,
1965 .poll = datagram_poll,
1966 .ioctl = ax25_ioctl,
1967 .listen = ax25_listen,
1968 .shutdown = ax25_shutdown,
1969 .setsockopt = ax25_setsockopt,
1970 .getsockopt = ax25_getsockopt,
1971 .sendmsg = ax25_sendmsg,
1972 .recvmsg = ax25_recvmsg,
1973 .mmap = sock_no_mmap,
1974 .sendpage = sock_no_sendpage,
1978 * Called by socket.c on kernel start up
1980 static struct packet_type ax25_packet_type = {
1981 .type = __constant_htons(ETH_P_AX25),
1982 .dev = NULL, /* All devices */
1983 .func = ax25_kiss_rcv,
1986 static struct notifier_block ax25_dev_notifier = {
1987 .notifier_call =ax25_device_event,
1990 static int __init ax25_init(void)
1992 int rc = proto_register(&ax25_proto, 0);
1997 sock_register(&ax25_family_ops);
1998 dev_add_pack(&ax25_packet_type);
1999 register_netdevice_notifier(&ax25_dev_notifier);
2000 ax25_register_sysctl();
2002 proc_net_fops_create("ax25_route", S_IRUGO, &ax25_route_fops);
2003 proc_net_fops_create("ax25", S_IRUGO, &ax25_info_fops);
2004 proc_net_fops_create("ax25_calls", S_IRUGO, &ax25_uid_fops);
2008 module_init(ax25_init);
2011 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
2012 MODULE_DESCRIPTION("The amateur radio AX.25 link layer protocol");
2013 MODULE_LICENSE("GPL");
2014 MODULE_ALIAS_NETPROTO(PF_AX25);
2016 static void __exit ax25_exit(void)
2018 proc_net_remove("ax25_route");
2019 proc_net_remove("ax25");
2020 proc_net_remove("ax25_calls");
2025 ax25_unregister_sysctl();
2026 unregister_netdevice_notifier(&ax25_dev_notifier);
2028 dev_remove_pack(&ax25_packet_type);
2030 sock_unregister(PF_AX25);
2031 proto_unregister(&ax25_proto);
2033 module_exit(ax25_exit);