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 setup_timer(&ax25->dtimer, ax25_destroy_timer,
334 (unsigned long)ax25);
335 ax25->dtimer.expires = jiffies + 2 * HZ;
336 add_timer(&ax25->dtimer);
338 struct sock *sk=ax25->sk;
348 * dl1bke 960311: set parameters for existing AX.25 connections,
349 * includes a KILL command to abort any connection.
350 * VERY useful for debugging ;-)
352 static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
354 struct ax25_ctl_struct ax25_ctl;
360 if (copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl)))
363 if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
366 if (ax25_ctl.digi_count > AX25_MAX_DIGIS)
369 digi.ndigi = ax25_ctl.digi_count;
370 for (k = 0; k < digi.ndigi; k++)
371 digi.calls[k] = ax25_ctl.digi_addr[k];
373 if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, &digi, ax25_dev->dev)) == NULL)
376 switch (ax25_ctl.cmd) {
378 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
379 #ifdef CONFIG_AX25_DAMA_SLAVE
380 if (ax25_dev->dama.slave && ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
383 ax25_disconnect(ax25, ENETRESET);
387 if (ax25->modulus == AX25_MODULUS) {
388 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
391 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
394 ax25->window = ax25_ctl.arg;
398 if (ax25_ctl.arg < 1)
400 ax25->rtt = (ax25_ctl.arg * HZ) / 2;
401 ax25->t1 = ax25_ctl.arg * HZ;
405 if (ax25_ctl.arg < 1)
407 ax25->t2 = ax25_ctl.arg * HZ;
411 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
414 ax25->n2 = ax25_ctl.arg;
418 if (ax25_ctl.arg < 0)
420 ax25->t3 = ax25_ctl.arg * HZ;
424 if (ax25_ctl.arg < 0)
426 ax25->idle = ax25_ctl.arg * 60 * HZ;
430 if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
432 ax25->paclen = ax25_ctl.arg;
442 static void ax25_fillin_cb_from_dev(ax25_cb *ax25, ax25_dev *ax25_dev)
444 ax25->rtt = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]) / 2;
445 ax25->t1 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]);
446 ax25->t2 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T2]);
447 ax25->t3 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T3]);
448 ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
449 ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
450 ax25->idle = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_IDLE]);
451 ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
453 if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
454 ax25->modulus = AX25_EMODULUS;
455 ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
457 ax25->modulus = AX25_MODULUS;
458 ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
463 * Fill in a created AX.25 created control block with the default
464 * values for a particular device.
466 void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
468 ax25->ax25_dev = ax25_dev;
470 if (ax25->ax25_dev != NULL) {
471 ax25_fillin_cb_from_dev(ax25, ax25_dev);
476 * No device, use kernel / AX.25 spec default values
478 ax25->rtt = msecs_to_jiffies(AX25_DEF_T1) / 2;
479 ax25->t1 = msecs_to_jiffies(AX25_DEF_T1);
480 ax25->t2 = msecs_to_jiffies(AX25_DEF_T2);
481 ax25->t3 = msecs_to_jiffies(AX25_DEF_T3);
482 ax25->n2 = AX25_DEF_N2;
483 ax25->paclen = AX25_DEF_PACLEN;
484 ax25->idle = msecs_to_jiffies(AX25_DEF_IDLE);
485 ax25->backoff = AX25_DEF_BACKOFF;
487 if (AX25_DEF_AXDEFMODE) {
488 ax25->modulus = AX25_EMODULUS;
489 ax25->window = AX25_DEF_EWINDOW;
491 ax25->modulus = AX25_MODULUS;
492 ax25->window = AX25_DEF_WINDOW;
497 * Create an empty AX.25 control block.
499 ax25_cb *ax25_create_cb(void)
503 if ((ax25 = kzalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
506 atomic_set(&ax25->refcount, 1);
508 skb_queue_head_init(&ax25->write_queue);
509 skb_queue_head_init(&ax25->frag_queue);
510 skb_queue_head_init(&ax25->ack_queue);
511 skb_queue_head_init(&ax25->reseq_queue);
513 init_timer(&ax25->timer);
514 init_timer(&ax25->t1timer);
515 init_timer(&ax25->t2timer);
516 init_timer(&ax25->t3timer);
517 init_timer(&ax25->idletimer);
519 ax25_fillin_cb(ax25, NULL);
521 ax25->state = AX25_STATE_0;
527 * Handling for system calls applied via the various interfaces to an
531 static int ax25_setsockopt(struct socket *sock, int level, int optname,
532 char __user *optval, int optlen)
534 struct sock *sk = sock->sk;
536 struct net_device *dev;
537 char devname[IFNAMSIZ];
540 if (level != SOL_AX25)
543 if (optlen < sizeof(int))
546 if (get_user(opt, (int __user *)optval))
554 if (ax25->modulus == AX25_MODULUS) {
555 if (opt < 1 || opt > 7) {
560 if (opt < 1 || opt > 63) {
573 ax25->rtt = (opt * HZ) / 2;
586 if (opt < 1 || opt > 31) {
606 ax25->idle = opt * 60 * HZ;
610 if (opt < 0 || opt > 2) {
618 ax25->modulus = opt ? AX25_EMODULUS : AX25_MODULUS;
622 ax25->pidincl = opt ? 1 : 0;
626 ax25->iamdigi = opt ? 1 : 0;
630 if (opt < 16 || opt > 65535) {
637 case SO_BINDTODEVICE:
638 if (optlen > IFNAMSIZ)
640 if (copy_from_user(devname, optval, optlen)) {
645 dev = dev_get_by_name(&init_net, devname);
651 if (sk->sk_type == SOCK_SEQPACKET &&
652 (sock->state != SS_UNCONNECTED ||
653 sk->sk_state == TCP_LISTEN)) {
654 res = -EADDRNOTAVAIL;
659 ax25->ax25_dev = ax25_dev_ax25dev(dev);
660 ax25_fillin_cb(ax25, ax25->ax25_dev);
671 static int ax25_getsockopt(struct socket *sock, int level, int optname,
672 char __user *optval, int __user *optlen)
674 struct sock *sk = sock->sk;
676 struct ax25_dev *ax25_dev;
677 char devname[IFNAMSIZ];
682 if (level != SOL_AX25)
685 if (get_user(maxlen, optlen))
691 valptr = (void *) &val;
692 length = min_t(unsigned int, maxlen, sizeof(int));
719 val = ax25->idle / (60 * HZ);
727 val = (ax25->modulus == AX25_EMODULUS);
742 case SO_BINDTODEVICE:
743 ax25_dev = ax25->ax25_dev;
745 if (ax25_dev != NULL && ax25_dev->dev != NULL) {
746 strlcpy(devname, ax25_dev->dev->name, sizeof(devname));
747 length = strlen(devname) + 1;
753 valptr = (void *) devname;
762 if (put_user(length, optlen))
765 return copy_to_user(optval, valptr, length) ? -EFAULT : 0;
768 static int ax25_listen(struct socket *sock, int backlog)
770 struct sock *sk = sock->sk;
774 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_LISTEN) {
775 sk->sk_max_ack_backlog = backlog;
776 sk->sk_state = TCP_LISTEN;
788 * XXX: when creating ax25_sock we should update the .obj_size setting
791 static struct proto ax25_proto = {
793 .owner = THIS_MODULE,
794 .obj_size = sizeof(struct sock),
797 static int ax25_create(struct net *net, struct socket *sock, int protocol)
802 if (net != &init_net)
803 return -EAFNOSUPPORT;
805 switch (sock->type) {
807 if (protocol == 0 || protocol == PF_AX25)
808 protocol = AX25_P_TEXT;
814 case PF_AX25: /* For CLX */
815 protocol = AX25_P_TEXT;
828 return -ESOCKTNOSUPPORT;
829 #ifdef CONFIG_NETROM_MODULE
831 if (ax25_protocol_is_registered(AX25_P_NETROM))
832 return -ESOCKTNOSUPPORT;
834 #ifdef CONFIG_ROSE_MODULE
836 if (ax25_protocol_is_registered(AX25_P_ROSE))
837 return -ESOCKTNOSUPPORT;
847 return -ESOCKTNOSUPPORT;
850 sk = sk_alloc(net, PF_AX25, GFP_ATOMIC, &ax25_proto);
854 ax25 = sk->sk_protinfo = ax25_create_cb();
860 sock_init_data(sock, sk);
862 sk->sk_destruct = ax25_free_sock;
863 sock->ops = &ax25_proto_ops;
864 sk->sk_protocol = protocol;
871 struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
874 ax25_cb *ax25, *oax25;
876 sk = sk_alloc(osk->sk_net, PF_AX25, GFP_ATOMIC, osk->sk_prot);
880 if ((ax25 = ax25_create_cb()) == NULL) {
885 switch (osk->sk_type) {
896 sock_init_data(NULL, sk);
898 sk->sk_destruct = ax25_free_sock;
899 sk->sk_type = osk->sk_type;
900 sk->sk_socket = osk->sk_socket;
901 sk->sk_priority = osk->sk_priority;
902 sk->sk_protocol = osk->sk_protocol;
903 sk->sk_rcvbuf = osk->sk_rcvbuf;
904 sk->sk_sndbuf = osk->sk_sndbuf;
905 sk->sk_state = TCP_ESTABLISHED;
906 sk->sk_sleep = osk->sk_sleep;
907 sock_copy_flags(sk, osk);
909 oax25 = ax25_sk(osk);
911 ax25->modulus = oax25->modulus;
912 ax25->backoff = oax25->backoff;
913 ax25->pidincl = oax25->pidincl;
914 ax25->iamdigi = oax25->iamdigi;
915 ax25->rtt = oax25->rtt;
916 ax25->t1 = oax25->t1;
917 ax25->t2 = oax25->t2;
918 ax25->t3 = oax25->t3;
919 ax25->n2 = oax25->n2;
920 ax25->idle = oax25->idle;
921 ax25->paclen = oax25->paclen;
922 ax25->window = oax25->window;
924 ax25->ax25_dev = ax25_dev;
925 ax25->source_addr = oax25->source_addr;
927 if (oax25->digipeat != NULL) {
928 ax25->digipeat = kmemdup(oax25->digipeat, sizeof(ax25_digi),
930 if (ax25->digipeat == NULL) {
937 sk->sk_protinfo = ax25;
943 static int ax25_release(struct socket *sock)
945 struct sock *sk = sock->sk;
956 if (sk->sk_type == SOCK_SEQPACKET) {
957 switch (ax25->state) {
960 ax25_disconnect(ax25, 0);
962 ax25_destroy_socket(ax25);
967 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
969 ax25_disconnect(ax25, 0);
971 ax25_destroy_socket(ax25);
976 ax25_clear_queues(ax25);
979 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
980 case AX25_PROTO_STD_SIMPLEX:
981 case AX25_PROTO_STD_DUPLEX:
982 ax25_send_control(ax25,
986 ax25_stop_t2timer(ax25);
987 ax25_stop_t3timer(ax25);
988 ax25_stop_idletimer(ax25);
990 #ifdef CONFIG_AX25_DAMA_SLAVE
991 case AX25_PROTO_DAMA_SLAVE:
992 ax25_stop_t3timer(ax25);
993 ax25_stop_idletimer(ax25);
997 ax25_calculate_t1(ax25);
998 ax25_start_t1timer(ax25);
999 ax25->state = AX25_STATE_2;
1000 sk->sk_state = TCP_CLOSE;
1001 sk->sk_shutdown |= SEND_SHUTDOWN;
1002 sk->sk_state_change(sk);
1003 sock_set_flag(sk, SOCK_DESTROY);
1010 sk->sk_state = TCP_CLOSE;
1011 sk->sk_shutdown |= SEND_SHUTDOWN;
1012 sk->sk_state_change(sk);
1013 ax25_destroy_socket(ax25);
1024 * We support a funny extension here so you can (as root) give any callsign
1025 * digipeated via a local address as source. This hack is obsolete now
1026 * that we've implemented support for SO_BINDTODEVICE. It is however small
1027 * and trivially backward compatible.
1029 static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
1031 struct sock *sk = sock->sk;
1032 struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
1033 ax25_dev *ax25_dev = NULL;
1034 ax25_uid_assoc *user;
1039 if (addr_len != sizeof(struct sockaddr_ax25) &&
1040 addr_len != sizeof(struct full_sockaddr_ax25)) {
1041 /* support for old structure may go away some time */
1042 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1043 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1047 printk(KERN_WARNING "ax25_bind(): %s uses old (6 digipeater) socket structure.\n",
1051 if (addr->fsa_ax25.sax25_family != AF_AX25)
1054 user = ax25_findbyuid(current->euid);
1059 if (ax25_uid_policy && !capable(CAP_NET_ADMIN))
1062 call = addr->fsa_ax25.sax25_call;
1068 if (!sock_flag(sk, SOCK_ZAPPED)) {
1073 ax25->source_addr = call;
1076 * User already set interface with SO_BINDTODEVICE
1078 if (ax25->ax25_dev != NULL)
1081 if (addr_len > sizeof(struct sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
1082 if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) != 0 &&
1083 (ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL) {
1084 err = -EADDRNOTAVAIL;
1088 if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL) {
1089 err = -EADDRNOTAVAIL;
1094 if (ax25_dev != NULL)
1095 ax25_fillin_cb(ax25, ax25_dev);
1099 sock_reset_flag(sk, SOCK_ZAPPED);
1108 * FIXME: nonblock behaviour looks like it may have a bug.
1110 static int __must_check ax25_connect(struct socket *sock,
1111 struct sockaddr *uaddr, int addr_len, int flags)
1113 struct sock *sk = sock->sk;
1114 ax25_cb *ax25 = ax25_sk(sk), *ax25t;
1115 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1116 ax25_digi *digi = NULL;
1117 int ct = 0, err = 0;
1120 * some sanity checks. code further down depends on this
1123 if (addr_len == sizeof(struct sockaddr_ax25))
1124 /* support for this will go away in early 2.5.x
1125 * ax25_connect(): uses obsolete socket structure
1128 else if (addr_len != sizeof(struct full_sockaddr_ax25))
1129 /* support for old structure may go away some time
1130 * ax25_connect(): uses old (6 digipeater) socket structure.
1132 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1133 (addr_len > sizeof(struct full_sockaddr_ax25)))
1137 if (fsa->fsa_ax25.sax25_family != AF_AX25)
1142 /* deal with restarts */
1143 if (sock->state == SS_CONNECTING) {
1144 switch (sk->sk_state) {
1145 case TCP_SYN_SENT: /* still trying */
1149 case TCP_ESTABLISHED: /* connection established */
1150 sock->state = SS_CONNECTED;
1153 case TCP_CLOSE: /* connection refused */
1154 sock->state = SS_UNCONNECTED;
1155 err = -ECONNREFUSED;
1160 if (sk->sk_state == TCP_ESTABLISHED && sk->sk_type == SOCK_SEQPACKET) {
1161 err = -EISCONN; /* No reconnect on a seqpacket socket */
1165 sk->sk_state = TCP_CLOSE;
1166 sock->state = SS_UNCONNECTED;
1168 kfree(ax25->digipeat);
1169 ax25->digipeat = NULL;
1172 * Handle digi-peaters to be used.
1174 if (addr_len > sizeof(struct sockaddr_ax25) &&
1175 fsa->fsa_ax25.sax25_ndigis != 0) {
1176 /* Valid number of digipeaters ? */
1177 if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS) {
1182 if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL) {
1187 digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
1188 digi->lastrepeat = -1;
1190 while (ct < fsa->fsa_ax25.sax25_ndigis) {
1191 if ((fsa->fsa_digipeater[ct].ax25_call[6] &
1192 AX25_HBIT) && ax25->iamdigi) {
1193 digi->repeated[ct] = 1;
1194 digi->lastrepeat = ct;
1196 digi->repeated[ct] = 0;
1198 digi->calls[ct] = fsa->fsa_digipeater[ct];
1204 * Must bind first - autobinding in this may or may not work. If
1205 * the socket is already bound, check to see if the device has
1206 * been filled in, error if it hasn't.
1208 if (sock_flag(sk, SOCK_ZAPPED)) {
1209 /* check if we can remove this feature. It is broken. */
1210 printk(KERN_WARNING "ax25_connect(): %s uses autobind, please contact jreuter@yaina.de\n",
1212 if ((err = ax25_rt_autobind(ax25, &fsa->fsa_ax25.sax25_call)) < 0) {
1217 ax25_fillin_cb(ax25, ax25->ax25_dev);
1220 if (ax25->ax25_dev == NULL) {
1222 err = -EHOSTUNREACH;
1227 if (sk->sk_type == SOCK_SEQPACKET &&
1228 (ax25t=ax25_find_cb(&ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi,
1229 ax25->ax25_dev->dev))) {
1231 err = -EADDRINUSE; /* Already such a connection */
1236 ax25->dest_addr = fsa->fsa_ax25.sax25_call;
1237 ax25->digipeat = digi;
1239 /* First the easy one */
1240 if (sk->sk_type != SOCK_SEQPACKET) {
1241 sock->state = SS_CONNECTED;
1242 sk->sk_state = TCP_ESTABLISHED;
1246 /* Move to connecting socket, ax.25 lapb WAIT_UA.. */
1247 sock->state = SS_CONNECTING;
1248 sk->sk_state = TCP_SYN_SENT;
1250 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
1251 case AX25_PROTO_STD_SIMPLEX:
1252 case AX25_PROTO_STD_DUPLEX:
1253 ax25_std_establish_data_link(ax25);
1256 #ifdef CONFIG_AX25_DAMA_SLAVE
1257 case AX25_PROTO_DAMA_SLAVE:
1258 ax25->modulus = AX25_MODULUS;
1259 ax25->window = ax25->ax25_dev->values[AX25_VALUES_WINDOW];
1260 if (ax25->ax25_dev->dama.slave)
1261 ax25_ds_establish_data_link(ax25);
1263 ax25_std_establish_data_link(ax25);
1268 ax25->state = AX25_STATE_1;
1270 ax25_start_heartbeat(ax25);
1273 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
1278 if (sk->sk_state == TCP_SYN_SENT) {
1282 prepare_to_wait(sk->sk_sleep, &wait,
1283 TASK_INTERRUPTIBLE);
1284 if (sk->sk_state != TCP_SYN_SENT)
1286 if (!signal_pending(current)) {
1295 finish_wait(sk->sk_sleep, &wait);
1301 if (sk->sk_state != TCP_ESTABLISHED) {
1302 /* Not in ABM, not in WAIT_UA -> failed */
1303 sock->state = SS_UNCONNECTED;
1304 err = sock_error(sk); /* Always set at this point */
1308 sock->state = SS_CONNECTED;
1317 static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
1319 struct sk_buff *skb;
1325 if (sock->state != SS_UNCONNECTED)
1328 if ((sk = sock->sk) == NULL)
1332 if (sk->sk_type != SOCK_SEQPACKET) {
1337 if (sk->sk_state != TCP_LISTEN) {
1343 * The read queue this time is holding sockets ready to use
1344 * hooked into the SABM we saved
1347 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
1348 skb = skb_dequeue(&sk->sk_receive_queue);
1352 if (flags & O_NONBLOCK) {
1356 if (!signal_pending(current)) {
1365 finish_wait(sk->sk_sleep, &wait);
1371 newsk->sk_socket = newsock;
1372 newsk->sk_sleep = &newsock->wait;
1374 /* Now attach up the new socket */
1376 sk->sk_ack_backlog--;
1377 newsock->sk = newsk;
1378 newsock->state = SS_CONNECTED;
1386 static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
1387 int *uaddr_len, int peer)
1389 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1390 struct sock *sk = sock->sk;
1391 unsigned char ndigi, i;
1399 if (sk->sk_state != TCP_ESTABLISHED) {
1404 fsa->fsa_ax25.sax25_family = AF_AX25;
1405 fsa->fsa_ax25.sax25_call = ax25->dest_addr;
1406 fsa->fsa_ax25.sax25_ndigis = 0;
1408 if (ax25->digipeat != NULL) {
1409 ndigi = ax25->digipeat->ndigi;
1410 fsa->fsa_ax25.sax25_ndigis = ndigi;
1411 for (i = 0; i < ndigi; i++)
1412 fsa->fsa_digipeater[i] =
1413 ax25->digipeat->calls[i];
1416 fsa->fsa_ax25.sax25_family = AF_AX25;
1417 fsa->fsa_ax25.sax25_call = ax25->source_addr;
1418 fsa->fsa_ax25.sax25_ndigis = 1;
1419 if (ax25->ax25_dev != NULL) {
1420 memcpy(&fsa->fsa_digipeater[0],
1421 ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
1423 fsa->fsa_digipeater[0] = null_ax25_address;
1426 *uaddr_len = sizeof (struct full_sockaddr_ax25);
1434 static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
1435 struct msghdr *msg, size_t len)
1437 struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
1438 struct sock *sk = sock->sk;
1439 struct sockaddr_ax25 sax;
1440 struct sk_buff *skb;
1441 ax25_digi dtmp, *dp;
1444 int lv, err, addr_len = msg->msg_namelen;
1446 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1452 if (sock_flag(sk, SOCK_ZAPPED)) {
1453 err = -EADDRNOTAVAIL;
1457 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1458 send_sig(SIGPIPE, current, 0);
1463 if (ax25->ax25_dev == NULL) {
1468 if (len > ax25->ax25_dev->dev->mtu) {
1474 if (usax->sax25_family != AF_AX25) {
1479 if (addr_len == sizeof(struct sockaddr_ax25))
1480 /* ax25_sendmsg(): uses obsolete socket structure */
1482 else if (addr_len != sizeof(struct full_sockaddr_ax25))
1483 /* support for old structure may go away some time
1484 * ax25_sendmsg(): uses old (6 digipeater)
1487 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1488 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1494 if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
1496 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)usax;
1498 /* Valid number of digipeaters ? */
1499 if (usax->sax25_ndigis < 1 || usax->sax25_ndigis > AX25_MAX_DIGIS) {
1504 dtmp.ndigi = usax->sax25_ndigis;
1506 while (ct < usax->sax25_ndigis) {
1507 dtmp.repeated[ct] = 0;
1508 dtmp.calls[ct] = fsa->fsa_digipeater[ct];
1512 dtmp.lastrepeat = 0;
1516 if (sk->sk_type == SOCK_SEQPACKET &&
1517 ax25cmp(&ax25->dest_addr, &sax.sax25_call)) {
1521 if (usax->sax25_ndigis == 0)
1527 * FIXME: 1003.1g - if the socket is like this because
1528 * it has become closed (not started closed) and is VC
1529 * we ought to SIGPIPE, EPIPE
1531 if (sk->sk_state != TCP_ESTABLISHED) {
1535 sax.sax25_family = AF_AX25;
1536 sax.sax25_call = ax25->dest_addr;
1537 dp = ax25->digipeat;
1540 SOCK_DEBUG(sk, "AX.25: sendto: Addresses built.\n");
1542 /* Build a packet */
1543 SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n");
1545 /* Assume the worst case */
1546 size = len + ax25->ax25_dev->dev->hard_header_len;
1548 skb = sock_alloc_send_skb(sk, size, msg->msg_flags&MSG_DONTWAIT, &err);
1552 skb_reserve(skb, size - len);
1554 SOCK_DEBUG(sk, "AX.25: Appending user data\n");
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 SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
1571 if (sk->sk_type == SOCK_SEQPACKET) {
1572 /* Connected mode sockets go via the LAPB machine */
1573 if (sk->sk_state != TCP_ESTABLISHED) {
1579 /* Shove it onto the queue and kick */
1580 ax25_output(ax25, ax25->paclen, skb);
1586 skb_push(skb, 1 + ax25_addr_size(dp));
1588 SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
1591 SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
1593 /* Build an AX.25 header */
1594 lv = ax25_addr_build(skb->data, &ax25->source_addr, &sax.sax25_call,
1595 dp, AX25_COMMAND, AX25_MODULUS);
1597 SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
1599 skb_set_transport_header(skb, lv);
1601 SOCK_DEBUG(sk, "base=%p pos=%p\n",
1602 skb->data, skb_transport_header(skb));
1604 *skb_transport_header(skb) = AX25_UI;
1606 /* Datagram frames go straight out of the door as UI */
1607 ax25_queue_xmit(skb, ax25->ax25_dev->dev);
1617 static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
1618 struct msghdr *msg, size_t size, int flags)
1620 struct sock *sk = sock->sk;
1621 struct sk_buff *skb;
1627 * This works for seqpacket too. The receiver has ordered the
1628 * queue for us! We do one quick check first though
1630 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_ESTABLISHED) {
1635 /* Now we can treat all alike */
1636 skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
1637 flags & MSG_DONTWAIT, &err);
1641 if (!ax25_sk(sk)->pidincl)
1642 skb_pull(skb, 1); /* Remove PID */
1644 skb_reset_transport_header(skb);
1647 if (copied > size) {
1649 msg->msg_flags |= MSG_TRUNC;
1652 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1654 if (msg->msg_namelen != 0) {
1655 struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
1658 const unsigned char *mac = skb_mac_header(skb);
1660 ax25_addr_parse(mac + 1, skb->data - mac - 1, &src, NULL,
1662 sax->sax25_family = AF_AX25;
1663 /* We set this correctly, even though we may not let the
1664 application know the digi calls further down (because it
1665 did NOT ask to know them). This could get political... **/
1666 sax->sax25_ndigis = digi.ndigi;
1667 sax->sax25_call = src;
1669 if (sax->sax25_ndigis != 0) {
1671 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)sax;
1673 for (ct = 0; ct < digi.ndigi; ct++)
1674 fsa->fsa_digipeater[ct] = digi.calls[ct];
1676 msg->msg_namelen = sizeof(struct full_sockaddr_ax25);
1679 skb_free_datagram(sk, skb);
1688 static int ax25_shutdown(struct socket *sk, int how)
1690 /* FIXME - generate DM and RNR states */
1694 static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1696 struct sock *sk = sock->sk;
1697 void __user *argp = (void __user *)arg;
1704 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
1707 res = put_user(amount, (int __user *)argp);
1712 struct sk_buff *skb;
1714 /* These two are safe on a single CPU system as only user tasks fiddle here */
1715 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1717 res = put_user(amount, (int __user *) argp);
1722 res = sock_get_timestamp(sk, argp);
1726 res = sock_get_timestampns(sk, argp);
1729 case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
1730 case SIOCAX25DELUID: /* Delete a uid from the uid/call map table */
1731 case SIOCAX25GETUID: {
1732 struct sockaddr_ax25 sax25;
1733 if (copy_from_user(&sax25, argp, sizeof(sax25))) {
1737 res = ax25_uid_ioctl(cmd, &sax25);
1741 case SIOCAX25NOUID: { /* Set the default policy (default/bar) */
1743 if (!capable(CAP_NET_ADMIN)) {
1747 if (get_user(amount, (long __user *)argp)) {
1751 if (amount > AX25_NOUID_BLOCK) {
1755 ax25_uid_policy = amount;
1763 if (!capable(CAP_NET_ADMIN)) {
1767 res = ax25_rt_ioctl(cmd, argp);
1770 case SIOCAX25CTLCON:
1771 if (!capable(CAP_NET_ADMIN)) {
1775 res = ax25_ctl_ioctl(cmd, argp);
1778 case SIOCAX25GETINFO:
1779 case SIOCAX25GETINFOOLD: {
1780 ax25_cb *ax25 = ax25_sk(sk);
1781 struct ax25_info_struct ax25_info;
1783 ax25_info.t1 = ax25->t1 / HZ;
1784 ax25_info.t2 = ax25->t2 / HZ;
1785 ax25_info.t3 = ax25->t3 / HZ;
1786 ax25_info.idle = ax25->idle / (60 * HZ);
1787 ax25_info.n2 = ax25->n2;
1788 ax25_info.t1timer = ax25_display_timer(&ax25->t1timer) / HZ;
1789 ax25_info.t2timer = ax25_display_timer(&ax25->t2timer) / HZ;
1790 ax25_info.t3timer = ax25_display_timer(&ax25->t3timer) / HZ;
1791 ax25_info.idletimer = ax25_display_timer(&ax25->idletimer) / (60 * HZ);
1792 ax25_info.n2count = ax25->n2count;
1793 ax25_info.state = ax25->state;
1794 ax25_info.rcv_q = atomic_read(&sk->sk_rmem_alloc);
1795 ax25_info.snd_q = atomic_read(&sk->sk_wmem_alloc);
1796 ax25_info.vs = ax25->vs;
1797 ax25_info.vr = ax25->vr;
1798 ax25_info.va = ax25->va;
1799 ax25_info.vs_max = ax25->vs; /* reserved */
1800 ax25_info.paclen = ax25->paclen;
1801 ax25_info.window = ax25->window;
1803 /* old structure? */
1804 if (cmd == SIOCAX25GETINFOOLD) {
1805 static int warned = 0;
1807 printk(KERN_INFO "%s uses old SIOCAX25GETINFO\n",
1812 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct_deprecated))) {
1817 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct))) {
1826 case SIOCAX25ADDFWD:
1827 case SIOCAX25DELFWD: {
1828 struct ax25_fwd_struct ax25_fwd;
1829 if (!capable(CAP_NET_ADMIN)) {
1833 if (copy_from_user(&ax25_fwd, argp, sizeof(ax25_fwd))) {
1837 res = ax25_fwd_ioctl(cmd, &ax25_fwd);
1843 case SIOCGIFDSTADDR:
1844 case SIOCSIFDSTADDR:
1845 case SIOCGIFBRDADDR:
1846 case SIOCSIFBRDADDR:
1847 case SIOCGIFNETMASK:
1848 case SIOCSIFNETMASK:
1863 #ifdef CONFIG_PROC_FS
1865 static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
1867 struct ax25_cb *ax25;
1868 struct hlist_node *node;
1871 spin_lock_bh(&ax25_list_lock);
1872 ax25_for_each(ax25, node, &ax25_list) {
1880 static void *ax25_info_next(struct seq_file *seq, void *v, loff_t *pos)
1884 return hlist_entry( ((struct ax25_cb *)v)->ax25_node.next,
1885 struct ax25_cb, ax25_node);
1888 static void ax25_info_stop(struct seq_file *seq, void *v)
1890 spin_unlock_bh(&ax25_list_lock);
1893 static int ax25_info_show(struct seq_file *seq, void *v)
1902 * 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
1905 seq_printf(seq, "%8.8lx %s %s%s ",
1907 ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
1908 ax2asc(buf, &ax25->source_addr),
1909 ax25->iamdigi? "*":"");
1910 seq_printf(seq, "%s", ax2asc(buf, &ax25->dest_addr));
1912 for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
1913 seq_printf(seq, ",%s%s",
1914 ax2asc(buf, &ax25->digipeat->calls[k]),
1915 ax25->digipeat->repeated[k]? "*":"");
1918 seq_printf(seq, " %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %d %d",
1920 ax25->vs, ax25->vr, ax25->va,
1921 ax25_display_timer(&ax25->t1timer) / HZ, ax25->t1 / HZ,
1922 ax25_display_timer(&ax25->t2timer) / HZ, ax25->t2 / HZ,
1923 ax25_display_timer(&ax25->t3timer) / HZ, ax25->t3 / HZ,
1924 ax25_display_timer(&ax25->idletimer) / (60 * HZ),
1925 ax25->idle / (60 * HZ),
1926 ax25->n2count, ax25->n2,
1931 if (ax25->sk != NULL) {
1932 bh_lock_sock(ax25->sk);
1933 seq_printf(seq," %d %d %ld\n",
1934 atomic_read(&ax25->sk->sk_wmem_alloc),
1935 atomic_read(&ax25->sk->sk_rmem_alloc),
1936 ax25->sk->sk_socket != NULL ? SOCK_INODE(ax25->sk->sk_socket)->i_ino : 0L);
1937 bh_unlock_sock(ax25->sk);
1939 seq_puts(seq, " * * *\n");
1944 static const struct seq_operations ax25_info_seqops = {
1945 .start = ax25_info_start,
1946 .next = ax25_info_next,
1947 .stop = ax25_info_stop,
1948 .show = ax25_info_show,
1951 static int ax25_info_open(struct inode *inode, struct file *file)
1953 return seq_open(file, &ax25_info_seqops);
1956 static const struct file_operations ax25_info_fops = {
1957 .owner = THIS_MODULE,
1958 .open = ax25_info_open,
1960 .llseek = seq_lseek,
1961 .release = seq_release,
1966 static struct net_proto_family ax25_family_ops = {
1968 .create = ax25_create,
1969 .owner = THIS_MODULE,
1972 static const struct proto_ops ax25_proto_ops = {
1974 .owner = THIS_MODULE,
1975 .release = ax25_release,
1977 .connect = ax25_connect,
1978 .socketpair = sock_no_socketpair,
1979 .accept = ax25_accept,
1980 .getname = ax25_getname,
1981 .poll = datagram_poll,
1982 .ioctl = ax25_ioctl,
1983 .listen = ax25_listen,
1984 .shutdown = ax25_shutdown,
1985 .setsockopt = ax25_setsockopt,
1986 .getsockopt = ax25_getsockopt,
1987 .sendmsg = ax25_sendmsg,
1988 .recvmsg = ax25_recvmsg,
1989 .mmap = sock_no_mmap,
1990 .sendpage = sock_no_sendpage,
1994 * Called by socket.c on kernel start up
1996 static struct packet_type ax25_packet_type = {
1997 .type = __constant_htons(ETH_P_AX25),
1998 .dev = NULL, /* All devices */
1999 .func = ax25_kiss_rcv,
2002 static struct notifier_block ax25_dev_notifier = {
2003 .notifier_call =ax25_device_event,
2006 static int __init ax25_init(void)
2008 int rc = proto_register(&ax25_proto, 0);
2013 sock_register(&ax25_family_ops);
2014 dev_add_pack(&ax25_packet_type);
2015 register_netdevice_notifier(&ax25_dev_notifier);
2016 ax25_register_sysctl();
2018 proc_net_fops_create(&init_net, "ax25_route", S_IRUGO, &ax25_route_fops);
2019 proc_net_fops_create(&init_net, "ax25", S_IRUGO, &ax25_info_fops);
2020 proc_net_fops_create(&init_net, "ax25_calls", S_IRUGO, &ax25_uid_fops);
2024 module_init(ax25_init);
2027 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
2028 MODULE_DESCRIPTION("The amateur radio AX.25 link layer protocol");
2029 MODULE_LICENSE("GPL");
2030 MODULE_ALIAS_NETPROTO(PF_AX25);
2032 static void __exit ax25_exit(void)
2034 proc_net_remove(&init_net, "ax25_route");
2035 proc_net_remove(&init_net, "ax25");
2036 proc_net_remove(&init_net, "ax25_calls");
2041 ax25_unregister_sysctl();
2042 unregister_netdevice_notifier(&ax25_dev_notifier);
2044 dev_remove_pack(&ax25_packet_type);
2046 sock_unregister(PF_AX25);
2047 proto_unregister(&ax25_proto);
2049 module_exit(ax25_exit);