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);
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 if (dev->nd_net != &init_net)
110 /* Reject non AX.25 devices */
111 if (dev->type != ARPHRD_AX25)
116 ax25_dev_device_up(dev);
119 ax25_kill_by_device(dev);
120 ax25_rt_device_down(dev);
121 ax25_dev_device_down(dev);
131 * Add a socket to the bound sockets list.
133 void ax25_cb_add(ax25_cb *ax25)
135 spin_lock_bh(&ax25_list_lock);
137 hlist_add_head(&ax25->ax25_node, &ax25_list);
138 spin_unlock_bh(&ax25_list_lock);
142 * Find a socket that wants to accept the SABM we have just
145 struct sock *ax25_find_listener(ax25_address *addr, int digi,
146 struct net_device *dev, int type)
149 struct hlist_node *node;
151 spin_lock(&ax25_list_lock);
152 ax25_for_each(s, node, &ax25_list) {
153 if ((s->iamdigi && !digi) || (!s->iamdigi && digi))
155 if (s->sk && !ax25cmp(&s->source_addr, addr) &&
156 s->sk->sk_type == type && s->sk->sk_state == TCP_LISTEN) {
157 /* If device is null we match any device */
158 if (s->ax25_dev == NULL || s->ax25_dev->dev == dev) {
160 spin_unlock(&ax25_list_lock);
165 spin_unlock(&ax25_list_lock);
171 * Find an AX.25 socket given both ends.
173 struct sock *ax25_get_socket(ax25_address *my_addr, ax25_address *dest_addr,
176 struct sock *sk = NULL;
178 struct hlist_node *node;
180 spin_lock(&ax25_list_lock);
181 ax25_for_each(s, node, &ax25_list) {
182 if (s->sk && !ax25cmp(&s->source_addr, my_addr) &&
183 !ax25cmp(&s->dest_addr, dest_addr) &&
184 s->sk->sk_type == type) {
191 spin_unlock(&ax25_list_lock);
197 * Find an AX.25 control block given both ends. It will only pick up
198 * floating AX.25 control blocks or non Raw socket bound control blocks.
200 ax25_cb *ax25_find_cb(ax25_address *src_addr, ax25_address *dest_addr,
201 ax25_digi *digi, struct net_device *dev)
204 struct hlist_node *node;
206 spin_lock_bh(&ax25_list_lock);
207 ax25_for_each(s, node, &ax25_list) {
208 if (s->sk && s->sk->sk_type != SOCK_SEQPACKET)
210 if (s->ax25_dev == NULL)
212 if (ax25cmp(&s->source_addr, src_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->ax25_dev->dev == dev) {
213 if (digi != NULL && digi->ndigi != 0) {
214 if (s->digipeat == NULL)
216 if (ax25digicmp(s->digipeat, digi) != 0)
219 if (s->digipeat != NULL && s->digipeat->ndigi != 0)
223 spin_unlock_bh(&ax25_list_lock);
228 spin_unlock_bh(&ax25_list_lock);
233 EXPORT_SYMBOL(ax25_find_cb);
235 void ax25_send_to_raw(ax25_address *addr, struct sk_buff *skb, int proto)
238 struct sk_buff *copy;
239 struct hlist_node *node;
241 spin_lock(&ax25_list_lock);
242 ax25_for_each(s, node, &ax25_list) {
243 if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 &&
244 s->sk->sk_type == SOCK_RAW &&
245 s->sk->sk_protocol == proto &&
246 s->ax25_dev->dev == skb->dev &&
247 atomic_read(&s->sk->sk_rmem_alloc) <= s->sk->sk_rcvbuf) {
248 if ((copy = skb_clone(skb, GFP_ATOMIC)) == NULL)
250 if (sock_queue_rcv_skb(s->sk, copy) != 0)
254 spin_unlock(&ax25_list_lock);
260 void ax25_destroy_socket(ax25_cb *);
263 * Handler for deferred kills.
265 static void ax25_destroy_timer(unsigned long data)
267 ax25_cb *ax25=(ax25_cb *)data;
274 ax25_destroy_socket(ax25);
280 * This is called from user mode and the timers. Thus it protects itself
281 * against interrupt users but doesn't worry about being called during
282 * work. Once it is removed from the queue no interrupt or bottom half
283 * will touch it and we are (fairly 8-) ) safe.
285 void ax25_destroy_socket(ax25_cb *ax25)
291 ax25_stop_heartbeat(ax25);
292 ax25_stop_t1timer(ax25);
293 ax25_stop_t2timer(ax25);
294 ax25_stop_t3timer(ax25);
295 ax25_stop_idletimer(ax25);
297 ax25_clear_queues(ax25); /* Flush the queues */
299 if (ax25->sk != NULL) {
300 while ((skb = skb_dequeue(&ax25->sk->sk_receive_queue)) != NULL) {
301 if (skb->sk != ax25->sk) {
302 /* A pending connection */
303 ax25_cb *sax25 = ax25_sk(skb->sk);
305 /* Queue the unaccepted socket for death */
306 sock_orphan(skb->sk);
308 ax25_start_heartbeat(sax25);
309 sax25->state = AX25_STATE_0;
314 skb_queue_purge(&ax25->sk->sk_write_queue);
317 if (ax25->sk != NULL) {
318 if (atomic_read(&ax25->sk->sk_wmem_alloc) ||
319 atomic_read(&ax25->sk->sk_rmem_alloc)) {
320 /* Defer: outstanding buffers */
321 init_timer(&ax25->dtimer);
322 ax25->dtimer.expires = jiffies + 2 * HZ;
323 ax25->dtimer.function = ax25_destroy_timer;
324 ax25->dtimer.data = (unsigned long)ax25;
325 add_timer(&ax25->dtimer);
327 struct sock *sk=ax25->sk;
337 * dl1bke 960311: set parameters for existing AX.25 connections,
338 * includes a KILL command to abort any connection.
339 * VERY useful for debugging ;-)
341 static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
343 struct ax25_ctl_struct ax25_ctl;
349 if (copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl)))
352 if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
355 if (ax25_ctl.digi_count > AX25_MAX_DIGIS)
358 digi.ndigi = ax25_ctl.digi_count;
359 for (k = 0; k < digi.ndigi; k++)
360 digi.calls[k] = ax25_ctl.digi_addr[k];
362 if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, &digi, ax25_dev->dev)) == NULL)
365 switch (ax25_ctl.cmd) {
367 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
368 #ifdef CONFIG_AX25_DAMA_SLAVE
369 if (ax25_dev->dama.slave && ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
372 ax25_disconnect(ax25, ENETRESET);
376 if (ax25->modulus == AX25_MODULUS) {
377 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
380 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
383 ax25->window = ax25_ctl.arg;
387 if (ax25_ctl.arg < 1)
389 ax25->rtt = (ax25_ctl.arg * HZ) / 2;
390 ax25->t1 = ax25_ctl.arg * HZ;
394 if (ax25_ctl.arg < 1)
396 ax25->t2 = ax25_ctl.arg * HZ;
400 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
403 ax25->n2 = ax25_ctl.arg;
407 if (ax25_ctl.arg < 0)
409 ax25->t3 = ax25_ctl.arg * HZ;
413 if (ax25_ctl.arg < 0)
415 ax25->idle = ax25_ctl.arg * 60 * HZ;
419 if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
421 ax25->paclen = ax25_ctl.arg;
431 static void ax25_fillin_cb_from_dev(ax25_cb *ax25, ax25_dev *ax25_dev)
433 ax25->rtt = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]) / 2;
434 ax25->t1 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]);
435 ax25->t2 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T2]);
436 ax25->t3 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T3]);
437 ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
438 ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
439 ax25->idle = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_IDLE]);
440 ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
442 if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
443 ax25->modulus = AX25_EMODULUS;
444 ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
446 ax25->modulus = AX25_MODULUS;
447 ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
452 * Fill in a created AX.25 created control block with the default
453 * values for a particular device.
455 void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
457 ax25->ax25_dev = ax25_dev;
459 if (ax25->ax25_dev != NULL) {
460 ax25_fillin_cb_from_dev(ax25, ax25_dev);
465 * No device, use kernel / AX.25 spec default values
467 ax25->rtt = msecs_to_jiffies(AX25_DEF_T1) / 2;
468 ax25->t1 = msecs_to_jiffies(AX25_DEF_T1);
469 ax25->t2 = msecs_to_jiffies(AX25_DEF_T2);
470 ax25->t3 = msecs_to_jiffies(AX25_DEF_T3);
471 ax25->n2 = AX25_DEF_N2;
472 ax25->paclen = AX25_DEF_PACLEN;
473 ax25->idle = msecs_to_jiffies(AX25_DEF_IDLE);
474 ax25->backoff = AX25_DEF_BACKOFF;
476 if (AX25_DEF_AXDEFMODE) {
477 ax25->modulus = AX25_EMODULUS;
478 ax25->window = AX25_DEF_EWINDOW;
480 ax25->modulus = AX25_MODULUS;
481 ax25->window = AX25_DEF_WINDOW;
486 * Create an empty AX.25 control block.
488 ax25_cb *ax25_create_cb(void)
492 if ((ax25 = kzalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
495 atomic_set(&ax25->refcount, 1);
497 skb_queue_head_init(&ax25->write_queue);
498 skb_queue_head_init(&ax25->frag_queue);
499 skb_queue_head_init(&ax25->ack_queue);
500 skb_queue_head_init(&ax25->reseq_queue);
502 init_timer(&ax25->timer);
503 init_timer(&ax25->t1timer);
504 init_timer(&ax25->t2timer);
505 init_timer(&ax25->t3timer);
506 init_timer(&ax25->idletimer);
508 ax25_fillin_cb(ax25, NULL);
510 ax25->state = AX25_STATE_0;
516 * Handling for system calls applied via the various interfaces to an
520 static int ax25_setsockopt(struct socket *sock, int level, int optname,
521 char __user *optval, int optlen)
523 struct sock *sk = sock->sk;
525 struct net_device *dev;
526 char devname[IFNAMSIZ];
529 if (level != SOL_AX25)
532 if (optlen < sizeof(int))
535 if (get_user(opt, (int __user *)optval))
543 if (ax25->modulus == AX25_MODULUS) {
544 if (opt < 1 || opt > 7) {
549 if (opt < 1 || opt > 63) {
562 ax25->rtt = (opt * HZ) / 2;
575 if (opt < 1 || opt > 31) {
595 ax25->idle = opt * 60 * HZ;
599 if (opt < 0 || opt > 2) {
607 ax25->modulus = opt ? AX25_EMODULUS : AX25_MODULUS;
611 ax25->pidincl = opt ? 1 : 0;
615 ax25->iamdigi = opt ? 1 : 0;
619 if (opt < 16 || opt > 65535) {
626 case SO_BINDTODEVICE:
627 if (optlen > IFNAMSIZ)
629 if (copy_from_user(devname, optval, optlen)) {
634 dev = dev_get_by_name(&init_net, devname);
640 if (sk->sk_type == SOCK_SEQPACKET &&
641 (sock->state != SS_UNCONNECTED ||
642 sk->sk_state == TCP_LISTEN)) {
643 res = -EADDRNOTAVAIL;
648 ax25->ax25_dev = ax25_dev_ax25dev(dev);
649 ax25_fillin_cb(ax25, ax25->ax25_dev);
660 static int ax25_getsockopt(struct socket *sock, int level, int optname,
661 char __user *optval, int __user *optlen)
663 struct sock *sk = sock->sk;
665 struct ax25_dev *ax25_dev;
666 char devname[IFNAMSIZ];
671 if (level != SOL_AX25)
674 if (get_user(maxlen, optlen))
680 valptr = (void *) &val;
681 length = min_t(unsigned int, maxlen, sizeof(int));
708 val = ax25->idle / (60 * HZ);
716 val = (ax25->modulus == AX25_EMODULUS);
731 case SO_BINDTODEVICE:
732 ax25_dev = ax25->ax25_dev;
734 if (ax25_dev != NULL && ax25_dev->dev != NULL) {
735 strlcpy(devname, ax25_dev->dev->name, sizeof(devname));
736 length = strlen(devname) + 1;
742 valptr = (void *) devname;
751 if (put_user(length, optlen))
754 return copy_to_user(optval, valptr, length) ? -EFAULT : 0;
757 static int ax25_listen(struct socket *sock, int backlog)
759 struct sock *sk = sock->sk;
763 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_LISTEN) {
764 sk->sk_max_ack_backlog = backlog;
765 sk->sk_state = TCP_LISTEN;
777 * XXX: when creating ax25_sock we should update the .obj_size setting
780 static struct proto ax25_proto = {
782 .owner = THIS_MODULE,
783 .obj_size = sizeof(struct sock),
786 static int ax25_create(struct net *net, struct socket *sock, int protocol)
791 if (net != &init_net)
792 return -EAFNOSUPPORT;
794 switch (sock->type) {
796 if (protocol == 0 || protocol == PF_AX25)
797 protocol = AX25_P_TEXT;
803 case PF_AX25: /* For CLX */
804 protocol = AX25_P_TEXT;
817 return -ESOCKTNOSUPPORT;
818 #ifdef CONFIG_NETROM_MODULE
820 if (ax25_protocol_is_registered(AX25_P_NETROM))
821 return -ESOCKTNOSUPPORT;
823 #ifdef CONFIG_ROSE_MODULE
825 if (ax25_protocol_is_registered(AX25_P_ROSE))
826 return -ESOCKTNOSUPPORT;
836 return -ESOCKTNOSUPPORT;
839 if ((sk = sk_alloc(net, PF_AX25, GFP_ATOMIC, &ax25_proto, 1)) == NULL)
842 ax25 = sk->sk_protinfo = ax25_create_cb();
848 sock_init_data(sock, sk);
850 sk->sk_destruct = ax25_free_sock;
851 sock->ops = &ax25_proto_ops;
852 sk->sk_protocol = protocol;
859 struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
862 ax25_cb *ax25, *oax25;
864 if ((sk = sk_alloc(osk->sk_net, PF_AX25, GFP_ATOMIC, osk->sk_prot, 1)) == NULL)
867 if ((ax25 = ax25_create_cb()) == NULL) {
872 switch (osk->sk_type) {
883 sock_init_data(NULL, sk);
885 sk->sk_destruct = ax25_free_sock;
886 sk->sk_type = osk->sk_type;
887 sk->sk_socket = osk->sk_socket;
888 sk->sk_priority = osk->sk_priority;
889 sk->sk_protocol = osk->sk_protocol;
890 sk->sk_rcvbuf = osk->sk_rcvbuf;
891 sk->sk_sndbuf = osk->sk_sndbuf;
892 sk->sk_state = TCP_ESTABLISHED;
893 sk->sk_sleep = osk->sk_sleep;
894 sock_copy_flags(sk, osk);
896 oax25 = ax25_sk(osk);
898 ax25->modulus = oax25->modulus;
899 ax25->backoff = oax25->backoff;
900 ax25->pidincl = oax25->pidincl;
901 ax25->iamdigi = oax25->iamdigi;
902 ax25->rtt = oax25->rtt;
903 ax25->t1 = oax25->t1;
904 ax25->t2 = oax25->t2;
905 ax25->t3 = oax25->t3;
906 ax25->n2 = oax25->n2;
907 ax25->idle = oax25->idle;
908 ax25->paclen = oax25->paclen;
909 ax25->window = oax25->window;
911 ax25->ax25_dev = ax25_dev;
912 ax25->source_addr = oax25->source_addr;
914 if (oax25->digipeat != NULL) {
915 ax25->digipeat = kmemdup(oax25->digipeat, sizeof(ax25_digi),
917 if (ax25->digipeat == NULL) {
924 sk->sk_protinfo = ax25;
930 static int ax25_release(struct socket *sock)
932 struct sock *sk = sock->sk;
943 if (sk->sk_type == SOCK_SEQPACKET) {
944 switch (ax25->state) {
947 ax25_disconnect(ax25, 0);
949 ax25_destroy_socket(ax25);
954 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
956 ax25_disconnect(ax25, 0);
958 ax25_destroy_socket(ax25);
963 ax25_clear_queues(ax25);
966 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
967 case AX25_PROTO_STD_SIMPLEX:
968 case AX25_PROTO_STD_DUPLEX:
969 ax25_send_control(ax25,
973 ax25_stop_t2timer(ax25);
974 ax25_stop_t3timer(ax25);
975 ax25_stop_idletimer(ax25);
977 #ifdef CONFIG_AX25_DAMA_SLAVE
978 case AX25_PROTO_DAMA_SLAVE:
979 ax25_stop_t3timer(ax25);
980 ax25_stop_idletimer(ax25);
984 ax25_calculate_t1(ax25);
985 ax25_start_t1timer(ax25);
986 ax25->state = AX25_STATE_2;
987 sk->sk_state = TCP_CLOSE;
988 sk->sk_shutdown |= SEND_SHUTDOWN;
989 sk->sk_state_change(sk);
990 sock_set_flag(sk, SOCK_DESTROY);
997 sk->sk_state = TCP_CLOSE;
998 sk->sk_shutdown |= SEND_SHUTDOWN;
999 sk->sk_state_change(sk);
1000 ax25_destroy_socket(ax25);
1011 * We support a funny extension here so you can (as root) give any callsign
1012 * digipeated via a local address as source. This hack is obsolete now
1013 * that we've implemented support for SO_BINDTODEVICE. It is however small
1014 * and trivially backward compatible.
1016 static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
1018 struct sock *sk = sock->sk;
1019 struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
1020 ax25_dev *ax25_dev = NULL;
1021 ax25_uid_assoc *user;
1026 if (addr_len != sizeof(struct sockaddr_ax25) &&
1027 addr_len != sizeof(struct full_sockaddr_ax25)) {
1028 /* support for old structure may go away some time */
1029 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1030 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1034 printk(KERN_WARNING "ax25_bind(): %s uses old (6 digipeater) socket structure.\n",
1038 if (addr->fsa_ax25.sax25_family != AF_AX25)
1041 user = ax25_findbyuid(current->euid);
1046 if (ax25_uid_policy && !capable(CAP_NET_ADMIN))
1049 call = addr->fsa_ax25.sax25_call;
1055 if (!sock_flag(sk, SOCK_ZAPPED)) {
1060 ax25->source_addr = call;
1063 * User already set interface with SO_BINDTODEVICE
1065 if (ax25->ax25_dev != NULL)
1068 if (addr_len > sizeof(struct sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
1069 if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) != 0 &&
1070 (ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL) {
1071 err = -EADDRNOTAVAIL;
1075 if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL) {
1076 err = -EADDRNOTAVAIL;
1081 if (ax25_dev != NULL)
1082 ax25_fillin_cb(ax25, ax25_dev);
1086 sock_reset_flag(sk, SOCK_ZAPPED);
1095 * FIXME: nonblock behaviour looks like it may have a bug.
1097 static int __must_check ax25_connect(struct socket *sock,
1098 struct sockaddr *uaddr, int addr_len, int flags)
1100 struct sock *sk = sock->sk;
1101 ax25_cb *ax25 = ax25_sk(sk), *ax25t;
1102 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1103 ax25_digi *digi = NULL;
1104 int ct = 0, err = 0;
1107 * some sanity checks. code further down depends on this
1110 if (addr_len == sizeof(struct sockaddr_ax25)) {
1111 /* support for this will go away in early 2.5.x */
1112 printk(KERN_WARNING "ax25_connect(): %s uses obsolete socket structure\n",
1115 else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
1116 /* support for old structure may go away some time */
1117 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1118 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1122 printk(KERN_WARNING "ax25_connect(): %s uses old (6 digipeater) socket structure.\n",
1126 if (fsa->fsa_ax25.sax25_family != AF_AX25)
1131 /* deal with restarts */
1132 if (sock->state == SS_CONNECTING) {
1133 switch (sk->sk_state) {
1134 case TCP_SYN_SENT: /* still trying */
1138 case TCP_ESTABLISHED: /* connection established */
1139 sock->state = SS_CONNECTED;
1142 case TCP_CLOSE: /* connection refused */
1143 sock->state = SS_UNCONNECTED;
1144 err = -ECONNREFUSED;
1149 if (sk->sk_state == TCP_ESTABLISHED && sk->sk_type == SOCK_SEQPACKET) {
1150 err = -EISCONN; /* No reconnect on a seqpacket socket */
1154 sk->sk_state = TCP_CLOSE;
1155 sock->state = SS_UNCONNECTED;
1157 kfree(ax25->digipeat);
1158 ax25->digipeat = NULL;
1161 * Handle digi-peaters to be used.
1163 if (addr_len > sizeof(struct sockaddr_ax25) &&
1164 fsa->fsa_ax25.sax25_ndigis != 0) {
1165 /* Valid number of digipeaters ? */
1166 if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS) {
1171 if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL) {
1176 digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
1177 digi->lastrepeat = -1;
1179 while (ct < fsa->fsa_ax25.sax25_ndigis) {
1180 if ((fsa->fsa_digipeater[ct].ax25_call[6] &
1181 AX25_HBIT) && ax25->iamdigi) {
1182 digi->repeated[ct] = 1;
1183 digi->lastrepeat = ct;
1185 digi->repeated[ct] = 0;
1187 digi->calls[ct] = fsa->fsa_digipeater[ct];
1193 * Must bind first - autobinding in this may or may not work. If
1194 * the socket is already bound, check to see if the device has
1195 * been filled in, error if it hasn't.
1197 if (sock_flag(sk, SOCK_ZAPPED)) {
1198 /* check if we can remove this feature. It is broken. */
1199 printk(KERN_WARNING "ax25_connect(): %s uses autobind, please contact jreuter@yaina.de\n",
1201 if ((err = ax25_rt_autobind(ax25, &fsa->fsa_ax25.sax25_call)) < 0) {
1206 ax25_fillin_cb(ax25, ax25->ax25_dev);
1209 if (ax25->ax25_dev == NULL) {
1211 err = -EHOSTUNREACH;
1216 if (sk->sk_type == SOCK_SEQPACKET &&
1217 (ax25t=ax25_find_cb(&ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi,
1218 ax25->ax25_dev->dev))) {
1220 err = -EADDRINUSE; /* Already such a connection */
1225 ax25->dest_addr = fsa->fsa_ax25.sax25_call;
1226 ax25->digipeat = digi;
1228 /* First the easy one */
1229 if (sk->sk_type != SOCK_SEQPACKET) {
1230 sock->state = SS_CONNECTED;
1231 sk->sk_state = TCP_ESTABLISHED;
1235 /* Move to connecting socket, ax.25 lapb WAIT_UA.. */
1236 sock->state = SS_CONNECTING;
1237 sk->sk_state = TCP_SYN_SENT;
1239 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
1240 case AX25_PROTO_STD_SIMPLEX:
1241 case AX25_PROTO_STD_DUPLEX:
1242 ax25_std_establish_data_link(ax25);
1245 #ifdef CONFIG_AX25_DAMA_SLAVE
1246 case AX25_PROTO_DAMA_SLAVE:
1247 ax25->modulus = AX25_MODULUS;
1248 ax25->window = ax25->ax25_dev->values[AX25_VALUES_WINDOW];
1249 if (ax25->ax25_dev->dama.slave)
1250 ax25_ds_establish_data_link(ax25);
1252 ax25_std_establish_data_link(ax25);
1257 ax25->state = AX25_STATE_1;
1259 ax25_start_heartbeat(ax25);
1262 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
1267 if (sk->sk_state == TCP_SYN_SENT) {
1271 prepare_to_wait(sk->sk_sleep, &wait,
1272 TASK_INTERRUPTIBLE);
1273 if (sk->sk_state != TCP_SYN_SENT)
1275 if (!signal_pending(current)) {
1284 finish_wait(sk->sk_sleep, &wait);
1290 if (sk->sk_state != TCP_ESTABLISHED) {
1291 /* Not in ABM, not in WAIT_UA -> failed */
1292 sock->state = SS_UNCONNECTED;
1293 err = sock_error(sk); /* Always set at this point */
1297 sock->state = SS_CONNECTED;
1306 static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
1308 struct sk_buff *skb;
1314 if (sock->state != SS_UNCONNECTED)
1317 if ((sk = sock->sk) == NULL)
1321 if (sk->sk_type != SOCK_SEQPACKET) {
1326 if (sk->sk_state != TCP_LISTEN) {
1332 * The read queue this time is holding sockets ready to use
1333 * hooked into the SABM we saved
1336 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
1337 skb = skb_dequeue(&sk->sk_receive_queue);
1341 if (flags & O_NONBLOCK) {
1345 if (!signal_pending(current)) {
1354 finish_wait(sk->sk_sleep, &wait);
1360 newsk->sk_socket = newsock;
1361 newsk->sk_sleep = &newsock->wait;
1363 /* Now attach up the new socket */
1365 sk->sk_ack_backlog--;
1366 newsock->sk = newsk;
1367 newsock->state = SS_CONNECTED;
1375 static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
1376 int *uaddr_len, int peer)
1378 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1379 struct sock *sk = sock->sk;
1380 unsigned char ndigi, i;
1388 if (sk->sk_state != TCP_ESTABLISHED) {
1393 fsa->fsa_ax25.sax25_family = AF_AX25;
1394 fsa->fsa_ax25.sax25_call = ax25->dest_addr;
1395 fsa->fsa_ax25.sax25_ndigis = 0;
1397 if (ax25->digipeat != NULL) {
1398 ndigi = ax25->digipeat->ndigi;
1399 fsa->fsa_ax25.sax25_ndigis = ndigi;
1400 for (i = 0; i < ndigi; i++)
1401 fsa->fsa_digipeater[i] =
1402 ax25->digipeat->calls[i];
1405 fsa->fsa_ax25.sax25_family = AF_AX25;
1406 fsa->fsa_ax25.sax25_call = ax25->source_addr;
1407 fsa->fsa_ax25.sax25_ndigis = 1;
1408 if (ax25->ax25_dev != NULL) {
1409 memcpy(&fsa->fsa_digipeater[0],
1410 ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
1412 fsa->fsa_digipeater[0] = null_ax25_address;
1415 *uaddr_len = sizeof (struct full_sockaddr_ax25);
1423 static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
1424 struct msghdr *msg, size_t len)
1426 struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
1427 struct sock *sk = sock->sk;
1428 struct sockaddr_ax25 sax;
1429 struct sk_buff *skb;
1430 ax25_digi dtmp, *dp;
1433 int lv, err, addr_len = msg->msg_namelen;
1435 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1441 if (sock_flag(sk, SOCK_ZAPPED)) {
1442 err = -EADDRNOTAVAIL;
1446 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1447 send_sig(SIGPIPE, current, 0);
1452 if (ax25->ax25_dev == NULL) {
1457 if (len > ax25->ax25_dev->dev->mtu) {
1463 if (usax->sax25_family != AF_AX25) {
1468 if (addr_len == sizeof(struct sockaddr_ax25)) {
1469 printk(KERN_WARNING "ax25_sendmsg(): %s uses obsolete socket structure\n",
1472 else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
1473 /* support for old structure may go away some time */
1474 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1475 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1480 printk(KERN_WARNING "ax25_sendmsg(): %s uses old (6 digipeater) socket structure.\n",
1484 if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
1486 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)usax;
1488 /* Valid number of digipeaters ? */
1489 if (usax->sax25_ndigis < 1 || usax->sax25_ndigis > AX25_MAX_DIGIS) {
1494 dtmp.ndigi = usax->sax25_ndigis;
1496 while (ct < usax->sax25_ndigis) {
1497 dtmp.repeated[ct] = 0;
1498 dtmp.calls[ct] = fsa->fsa_digipeater[ct];
1502 dtmp.lastrepeat = 0;
1506 if (sk->sk_type == SOCK_SEQPACKET &&
1507 ax25cmp(&ax25->dest_addr, &sax.sax25_call)) {
1511 if (usax->sax25_ndigis == 0)
1517 * FIXME: 1003.1g - if the socket is like this because
1518 * it has become closed (not started closed) and is VC
1519 * we ought to SIGPIPE, EPIPE
1521 if (sk->sk_state != TCP_ESTABLISHED) {
1525 sax.sax25_family = AF_AX25;
1526 sax.sax25_call = ax25->dest_addr;
1527 dp = ax25->digipeat;
1530 SOCK_DEBUG(sk, "AX.25: sendto: Addresses built.\n");
1532 /* Build a packet */
1533 SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n");
1535 /* Assume the worst case */
1536 size = len + ax25->ax25_dev->dev->hard_header_len;
1538 skb = sock_alloc_send_skb(sk, size, msg->msg_flags&MSG_DONTWAIT, &err);
1542 skb_reserve(skb, size - len);
1544 SOCK_DEBUG(sk, "AX.25: Appending user data\n");
1546 /* User data follows immediately after the AX.25 data */
1547 if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
1553 skb_reset_network_header(skb);
1555 /* Add the PID if one is not supplied by the user in the skb */
1557 *skb_push(skb, 1) = sk->sk_protocol;
1559 SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
1561 if (sk->sk_type == SOCK_SEQPACKET) {
1562 /* Connected mode sockets go via the LAPB machine */
1563 if (sk->sk_state != TCP_ESTABLISHED) {
1569 /* Shove it onto the queue and kick */
1570 ax25_output(ax25, ax25->paclen, skb);
1576 skb_push(skb, 1 + ax25_addr_size(dp));
1578 SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
1581 SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
1583 /* Build an AX.25 header */
1584 lv = ax25_addr_build(skb->data, &ax25->source_addr, &sax.sax25_call,
1585 dp, AX25_COMMAND, AX25_MODULUS);
1587 SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
1589 skb_set_transport_header(skb, lv);
1591 SOCK_DEBUG(sk, "base=%p pos=%p\n",
1592 skb->data, skb_transport_header(skb));
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;
1694 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
1697 res = put_user(amount, (int __user *)argp);
1702 struct sk_buff *skb;
1704 /* These two are safe on a single CPU system as only user tasks fiddle here */
1705 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1707 res = put_user(amount, (int __user *) argp);
1712 res = sock_get_timestamp(sk, argp);
1716 res = sock_get_timestampns(sk, argp);
1719 case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
1720 case SIOCAX25DELUID: /* Delete a uid from the uid/call map table */
1721 case SIOCAX25GETUID: {
1722 struct sockaddr_ax25 sax25;
1723 if (copy_from_user(&sax25, argp, sizeof(sax25))) {
1727 res = ax25_uid_ioctl(cmd, &sax25);
1731 case SIOCAX25NOUID: { /* Set the default policy (default/bar) */
1733 if (!capable(CAP_NET_ADMIN)) {
1737 if (get_user(amount, (long __user *)argp)) {
1741 if (amount > AX25_NOUID_BLOCK) {
1745 ax25_uid_policy = amount;
1753 if (!capable(CAP_NET_ADMIN)) {
1757 res = ax25_rt_ioctl(cmd, argp);
1760 case SIOCAX25CTLCON:
1761 if (!capable(CAP_NET_ADMIN)) {
1765 res = ax25_ctl_ioctl(cmd, argp);
1768 case SIOCAX25GETINFO:
1769 case SIOCAX25GETINFOOLD: {
1770 ax25_cb *ax25 = ax25_sk(sk);
1771 struct ax25_info_struct ax25_info;
1773 ax25_info.t1 = ax25->t1 / HZ;
1774 ax25_info.t2 = ax25->t2 / HZ;
1775 ax25_info.t3 = ax25->t3 / HZ;
1776 ax25_info.idle = ax25->idle / (60 * HZ);
1777 ax25_info.n2 = ax25->n2;
1778 ax25_info.t1timer = ax25_display_timer(&ax25->t1timer) / HZ;
1779 ax25_info.t2timer = ax25_display_timer(&ax25->t2timer) / HZ;
1780 ax25_info.t3timer = ax25_display_timer(&ax25->t3timer) / HZ;
1781 ax25_info.idletimer = ax25_display_timer(&ax25->idletimer) / (60 * HZ);
1782 ax25_info.n2count = ax25->n2count;
1783 ax25_info.state = ax25->state;
1784 ax25_info.rcv_q = atomic_read(&sk->sk_rmem_alloc);
1785 ax25_info.snd_q = atomic_read(&sk->sk_wmem_alloc);
1786 ax25_info.vs = ax25->vs;
1787 ax25_info.vr = ax25->vr;
1788 ax25_info.va = ax25->va;
1789 ax25_info.vs_max = ax25->vs; /* reserved */
1790 ax25_info.paclen = ax25->paclen;
1791 ax25_info.window = ax25->window;
1793 /* old structure? */
1794 if (cmd == SIOCAX25GETINFOOLD) {
1795 static int warned = 0;
1797 printk(KERN_INFO "%s uses old SIOCAX25GETINFO\n",
1802 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct_deprecated))) {
1807 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct))) {
1816 case SIOCAX25ADDFWD:
1817 case SIOCAX25DELFWD: {
1818 struct ax25_fwd_struct ax25_fwd;
1819 if (!capable(CAP_NET_ADMIN)) {
1823 if (copy_from_user(&ax25_fwd, argp, sizeof(ax25_fwd))) {
1827 res = ax25_fwd_ioctl(cmd, &ax25_fwd);
1833 case SIOCGIFDSTADDR:
1834 case SIOCSIFDSTADDR:
1835 case SIOCGIFBRDADDR:
1836 case SIOCSIFBRDADDR:
1837 case SIOCGIFNETMASK:
1838 case SIOCSIFNETMASK:
1853 #ifdef CONFIG_PROC_FS
1855 static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
1857 struct ax25_cb *ax25;
1858 struct hlist_node *node;
1861 spin_lock_bh(&ax25_list_lock);
1862 ax25_for_each(ax25, node, &ax25_list) {
1870 static void *ax25_info_next(struct seq_file *seq, void *v, loff_t *pos)
1874 return hlist_entry( ((struct ax25_cb *)v)->ax25_node.next,
1875 struct ax25_cb, ax25_node);
1878 static void ax25_info_stop(struct seq_file *seq, void *v)
1880 spin_unlock_bh(&ax25_list_lock);
1883 static int ax25_info_show(struct seq_file *seq, void *v)
1892 * 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
1895 seq_printf(seq, "%8.8lx %s %s%s ",
1897 ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
1898 ax2asc(buf, &ax25->source_addr),
1899 ax25->iamdigi? "*":"");
1900 seq_printf(seq, "%s", ax2asc(buf, &ax25->dest_addr));
1902 for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
1903 seq_printf(seq, ",%s%s",
1904 ax2asc(buf, &ax25->digipeat->calls[k]),
1905 ax25->digipeat->repeated[k]? "*":"");
1908 seq_printf(seq, " %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %d %d",
1910 ax25->vs, ax25->vr, ax25->va,
1911 ax25_display_timer(&ax25->t1timer) / HZ, ax25->t1 / HZ,
1912 ax25_display_timer(&ax25->t2timer) / HZ, ax25->t2 / HZ,
1913 ax25_display_timer(&ax25->t3timer) / HZ, ax25->t3 / HZ,
1914 ax25_display_timer(&ax25->idletimer) / (60 * HZ),
1915 ax25->idle / (60 * HZ),
1916 ax25->n2count, ax25->n2,
1921 if (ax25->sk != NULL) {
1922 bh_lock_sock(ax25->sk);
1923 seq_printf(seq," %d %d %ld\n",
1924 atomic_read(&ax25->sk->sk_wmem_alloc),
1925 atomic_read(&ax25->sk->sk_rmem_alloc),
1926 ax25->sk->sk_socket != NULL ? SOCK_INODE(ax25->sk->sk_socket)->i_ino : 0L);
1927 bh_unlock_sock(ax25->sk);
1929 seq_puts(seq, " * * *\n");
1934 static const struct seq_operations ax25_info_seqops = {
1935 .start = ax25_info_start,
1936 .next = ax25_info_next,
1937 .stop = ax25_info_stop,
1938 .show = ax25_info_show,
1941 static int ax25_info_open(struct inode *inode, struct file *file)
1943 return seq_open(file, &ax25_info_seqops);
1946 static const struct file_operations ax25_info_fops = {
1947 .owner = THIS_MODULE,
1948 .open = ax25_info_open,
1950 .llseek = seq_lseek,
1951 .release = seq_release,
1956 static struct net_proto_family ax25_family_ops = {
1958 .create = ax25_create,
1959 .owner = THIS_MODULE,
1962 static const struct proto_ops ax25_proto_ops = {
1964 .owner = THIS_MODULE,
1965 .release = ax25_release,
1967 .connect = ax25_connect,
1968 .socketpair = sock_no_socketpair,
1969 .accept = ax25_accept,
1970 .getname = ax25_getname,
1971 .poll = datagram_poll,
1972 .ioctl = ax25_ioctl,
1973 .listen = ax25_listen,
1974 .shutdown = ax25_shutdown,
1975 .setsockopt = ax25_setsockopt,
1976 .getsockopt = ax25_getsockopt,
1977 .sendmsg = ax25_sendmsg,
1978 .recvmsg = ax25_recvmsg,
1979 .mmap = sock_no_mmap,
1980 .sendpage = sock_no_sendpage,
1984 * Called by socket.c on kernel start up
1986 static struct packet_type ax25_packet_type = {
1987 .type = __constant_htons(ETH_P_AX25),
1988 .dev = NULL, /* All devices */
1989 .func = ax25_kiss_rcv,
1992 static struct notifier_block ax25_dev_notifier = {
1993 .notifier_call =ax25_device_event,
1996 static int __init ax25_init(void)
1998 int rc = proto_register(&ax25_proto, 0);
2003 sock_register(&ax25_family_ops);
2004 dev_add_pack(&ax25_packet_type);
2005 register_netdevice_notifier(&ax25_dev_notifier);
2006 ax25_register_sysctl();
2008 proc_net_fops_create(&init_net, "ax25_route", S_IRUGO, &ax25_route_fops);
2009 proc_net_fops_create(&init_net, "ax25", S_IRUGO, &ax25_info_fops);
2010 proc_net_fops_create(&init_net, "ax25_calls", S_IRUGO, &ax25_uid_fops);
2014 module_init(ax25_init);
2017 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
2018 MODULE_DESCRIPTION("The amateur radio AX.25 link layer protocol");
2019 MODULE_LICENSE("GPL");
2020 MODULE_ALIAS_NETPROTO(PF_AX25);
2022 static void __exit ax25_exit(void)
2024 proc_net_remove(&init_net, "ax25_route");
2025 proc_net_remove(&init_net, "ax25");
2026 proc_net_remove(&init_net, "ax25_calls");
2031 ax25_unregister_sysctl();
2032 unregister_netdevice_notifier(&ax25_dev_notifier);
2034 dev_remove_pack(&ax25_packet_type);
2036 sock_unregister(PF_AX25);
2037 proto_unregister(&ax25_proto);
2039 module_exit(ax25_exit);