2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
8 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
9 * Copyright (C) Darryl Miles G7LED (dlm@g7led.demon.co.uk)
10 * Copyright (C) Steven Whitehouse GW7RRM (stevew@acm.org)
11 * Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de)
12 * Copyright (C) Hans-Joachim Hetscher DD8NE (dd8ne@bnv-bamberg.de)
13 * Copyright (C) Hans Alblas PE1AYX (hans@esrac.ele.tue.nl)
14 * Copyright (C) Frederic Rible F1OAT (frible@teaser.fr)
16 #include <linux/capability.h>
17 #include <linux/module.h>
18 #include <linux/errno.h>
19 #include <linux/types.h>
20 #include <linux/socket.h>
22 #include <linux/kernel.h>
23 #include <linux/sched.h>
24 #include <linux/timer.h>
25 #include <linux/string.h>
26 #include <linux/sockios.h>
27 #include <linux/net.h>
28 #include <linux/slab.h>
30 #include <linux/inet.h>
31 #include <linux/netdevice.h>
32 #include <linux/if_arp.h>
33 #include <linux/skbuff.h>
35 #include <asm/uaccess.h>
36 #include <linux/fcntl.h>
37 #include <linux/termios.h> /* For TIOCINQ/OUTQ */
39 #include <linux/interrupt.h>
40 #include <linux/notifier.h>
41 #include <linux/proc_fs.h>
42 #include <linux/stat.h>
43 #include <linux/sysctl.h>
44 #include <linux/init.h>
45 #include <linux/spinlock.h>
46 #include <net/net_namespace.h>
47 #include <net/tcp_states.h>
53 HLIST_HEAD(ax25_list);
54 DEFINE_SPINLOCK(ax25_list_lock);
56 static const struct proto_ops ax25_proto_ops;
58 static void ax25_free_sock(struct sock *sk)
60 ax25_cb_put(sk_to_ax25(sk));
64 * Socket removal during an interrupt is now safe.
66 static void ax25_cb_del(ax25_cb *ax25)
68 if (!hlist_unhashed(&ax25->ax25_node)) {
69 spin_lock_bh(&ax25_list_lock);
70 hlist_del_init(&ax25->ax25_node);
71 spin_unlock_bh(&ax25_list_lock);
77 * Kill all bound sockets on a dropped device.
79 static void ax25_kill_by_device(struct net_device *dev)
84 if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL)
87 spin_lock_bh(&ax25_list_lock);
89 ax25_for_each(s, &ax25_list) {
90 if (s->ax25_dev == ax25_dev) {
91 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 = netdev_notifier_info_to_dev(ptr);
119 if (!net_eq(dev_net(dev), &init_net))
122 /* Reject non AX.25 devices */
123 if (dev->type != ARPHRD_AX25)
128 ax25_dev_device_up(dev);
131 ax25_kill_by_device(dev);
132 ax25_rt_device_down(dev);
133 ax25_dev_device_down(dev);
143 * Add a socket to the bound sockets list.
145 void ax25_cb_add(ax25_cb *ax25)
147 spin_lock_bh(&ax25_list_lock);
149 hlist_add_head(&ax25->ax25_node, &ax25_list);
150 spin_unlock_bh(&ax25_list_lock);
154 * Find a socket that wants to accept the SABM we have just
157 struct sock *ax25_find_listener(ax25_address *addr, int digi,
158 struct net_device *dev, int type)
162 spin_lock(&ax25_list_lock);
163 ax25_for_each(s, &ax25_list) {
164 if ((s->iamdigi && !digi) || (!s->iamdigi && digi))
166 if (s->sk && !ax25cmp(&s->source_addr, addr) &&
167 s->sk->sk_type == type && s->sk->sk_state == TCP_LISTEN) {
168 /* If device is null we match any device */
169 if (s->ax25_dev == NULL || s->ax25_dev->dev == dev) {
171 spin_unlock(&ax25_list_lock);
176 spin_unlock(&ax25_list_lock);
182 * Find an AX.25 socket given both ends.
184 struct sock *ax25_get_socket(ax25_address *my_addr, ax25_address *dest_addr,
187 struct sock *sk = NULL;
190 spin_lock(&ax25_list_lock);
191 ax25_for_each(s, &ax25_list) {
192 if (s->sk && !ax25cmp(&s->source_addr, my_addr) &&
193 !ax25cmp(&s->dest_addr, dest_addr) &&
194 s->sk->sk_type == type) {
201 spin_unlock(&ax25_list_lock);
207 * Find an AX.25 control block given both ends. It will only pick up
208 * floating AX.25 control blocks or non Raw socket bound control blocks.
210 ax25_cb *ax25_find_cb(ax25_address *src_addr, ax25_address *dest_addr,
211 ax25_digi *digi, struct net_device *dev)
215 spin_lock_bh(&ax25_list_lock);
216 ax25_for_each(s, &ax25_list) {
217 if (s->sk && s->sk->sk_type != SOCK_SEQPACKET)
219 if (s->ax25_dev == NULL)
221 if (ax25cmp(&s->source_addr, src_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->ax25_dev->dev == dev) {
222 if (digi != NULL && digi->ndigi != 0) {
223 if (s->digipeat == NULL)
225 if (ax25digicmp(s->digipeat, digi) != 0)
228 if (s->digipeat != NULL && s->digipeat->ndigi != 0)
232 spin_unlock_bh(&ax25_list_lock);
237 spin_unlock_bh(&ax25_list_lock);
242 EXPORT_SYMBOL(ax25_find_cb);
244 void ax25_send_to_raw(ax25_address *addr, struct sk_buff *skb, int proto)
247 struct sk_buff *copy;
249 spin_lock(&ax25_list_lock);
250 ax25_for_each(s, &ax25_list) {
251 if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 &&
252 s->sk->sk_type == SOCK_RAW &&
253 s->sk->sk_protocol == proto &&
254 s->ax25_dev->dev == skb->dev &&
255 atomic_read(&s->sk->sk_rmem_alloc) <= s->sk->sk_rcvbuf) {
256 if ((copy = skb_clone(skb, GFP_ATOMIC)) == NULL)
258 if (sock_queue_rcv_skb(s->sk, copy) != 0)
262 spin_unlock(&ax25_list_lock);
268 void ax25_destroy_socket(ax25_cb *);
271 * Handler for deferred kills.
273 static void ax25_destroy_timer(unsigned long data)
275 ax25_cb *ax25=(ax25_cb *)data;
282 ax25_destroy_socket(ax25);
288 * This is called from user mode and the timers. Thus it protects itself
289 * against interrupt users but doesn't worry about being called during
290 * work. Once it is removed from the queue no interrupt or bottom half
291 * will touch it and we are (fairly 8-) ) safe.
293 void ax25_destroy_socket(ax25_cb *ax25)
299 ax25_stop_heartbeat(ax25);
300 ax25_stop_t1timer(ax25);
301 ax25_stop_t2timer(ax25);
302 ax25_stop_t3timer(ax25);
303 ax25_stop_idletimer(ax25);
305 ax25_clear_queues(ax25); /* Flush the queues */
307 if (ax25->sk != NULL) {
308 while ((skb = skb_dequeue(&ax25->sk->sk_receive_queue)) != NULL) {
309 if (skb->sk != ax25->sk) {
310 /* A pending connection */
311 ax25_cb *sax25 = sk_to_ax25(skb->sk);
313 /* Queue the unaccepted socket for death */
314 sock_orphan(skb->sk);
316 /* 9A4GL: hack to release unaccepted sockets */
317 skb->sk->sk_state = TCP_LISTEN;
319 ax25_start_heartbeat(sax25);
320 sax25->state = AX25_STATE_0;
325 skb_queue_purge(&ax25->sk->sk_write_queue);
328 if (ax25->sk != NULL) {
329 if (sk_has_allocations(ax25->sk)) {
330 /* Defer: outstanding buffers */
331 setup_timer(&ax25->dtimer, ax25_destroy_timer,
332 (unsigned long)ax25);
333 ax25->dtimer.expires = jiffies + 2 * HZ;
334 add_timer(&ax25->dtimer);
336 struct sock *sk=ax25->sk;
346 * dl1bke 960311: set parameters for existing AX.25 connections,
347 * includes a KILL command to abort any connection.
348 * VERY useful for debugging ;-)
350 static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
352 struct ax25_ctl_struct ax25_ctl;
359 if (copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl)))
362 if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
365 if (ax25_ctl.digi_count > AX25_MAX_DIGIS)
368 if (ax25_ctl.arg > ULONG_MAX / HZ && ax25_ctl.cmd != AX25_KILL)
371 digi.ndigi = ax25_ctl.digi_count;
372 for (k = 0; k < digi.ndigi; k++)
373 digi.calls[k] = ax25_ctl.digi_addr[k];
375 if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, &digi, ax25_dev->dev)) == NULL)
378 switch (ax25_ctl.cmd) {
380 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
381 #ifdef CONFIG_AX25_DAMA_SLAVE
382 if (ax25_dev->dama.slave && ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
385 ax25_disconnect(ax25, ENETRESET);
389 if (ax25->modulus == AX25_MODULUS) {
390 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
393 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
396 ax25->window = ax25_ctl.arg;
400 if (ax25_ctl.arg < 1 || ax25_ctl.arg > ULONG_MAX / HZ)
402 ax25->rtt = (ax25_ctl.arg * HZ) / 2;
403 ax25->t1 = ax25_ctl.arg * HZ;
407 if (ax25_ctl.arg < 1 || ax25_ctl.arg > ULONG_MAX / HZ)
409 ax25->t2 = ax25_ctl.arg * HZ;
413 if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
416 ax25->n2 = ax25_ctl.arg;
420 if (ax25_ctl.arg > ULONG_MAX / HZ)
422 ax25->t3 = ax25_ctl.arg * HZ;
426 if (ax25_ctl.arg > ULONG_MAX / (60 * HZ))
429 ax25->idle = ax25_ctl.arg * 60 * HZ;
433 if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
435 ax25->paclen = ax25_ctl.arg;
451 static void ax25_fillin_cb_from_dev(ax25_cb *ax25, ax25_dev *ax25_dev)
453 ax25->rtt = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]) / 2;
454 ax25->t1 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]);
455 ax25->t2 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T2]);
456 ax25->t3 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T3]);
457 ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
458 ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
459 ax25->idle = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_IDLE]);
460 ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
462 if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
463 ax25->modulus = AX25_EMODULUS;
464 ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
466 ax25->modulus = AX25_MODULUS;
467 ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
472 * Fill in a created AX.25 created control block with the default
473 * values for a particular device.
475 void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
477 ax25->ax25_dev = ax25_dev;
479 if (ax25->ax25_dev != NULL) {
480 ax25_fillin_cb_from_dev(ax25, ax25_dev);
485 * No device, use kernel / AX.25 spec default values
487 ax25->rtt = msecs_to_jiffies(AX25_DEF_T1) / 2;
488 ax25->t1 = msecs_to_jiffies(AX25_DEF_T1);
489 ax25->t2 = msecs_to_jiffies(AX25_DEF_T2);
490 ax25->t3 = msecs_to_jiffies(AX25_DEF_T3);
491 ax25->n2 = AX25_DEF_N2;
492 ax25->paclen = AX25_DEF_PACLEN;
493 ax25->idle = msecs_to_jiffies(AX25_DEF_IDLE);
494 ax25->backoff = AX25_DEF_BACKOFF;
496 if (AX25_DEF_AXDEFMODE) {
497 ax25->modulus = AX25_EMODULUS;
498 ax25->window = AX25_DEF_EWINDOW;
500 ax25->modulus = AX25_MODULUS;
501 ax25->window = AX25_DEF_WINDOW;
506 * Create an empty AX.25 control block.
508 ax25_cb *ax25_create_cb(void)
512 if ((ax25 = kzalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
515 atomic_set(&ax25->refcount, 1);
517 skb_queue_head_init(&ax25->write_queue);
518 skb_queue_head_init(&ax25->frag_queue);
519 skb_queue_head_init(&ax25->ack_queue);
520 skb_queue_head_init(&ax25->reseq_queue);
522 ax25_setup_timers(ax25);
524 ax25_fillin_cb(ax25, NULL);
526 ax25->state = AX25_STATE_0;
532 * Handling for system calls applied via the various interfaces to an
536 static int ax25_setsockopt(struct socket *sock, int level, int optname,
537 char __user *optval, unsigned int optlen)
539 struct sock *sk = sock->sk;
541 struct net_device *dev;
542 char devname[IFNAMSIZ];
546 if (level != SOL_AX25)
549 if (optlen < sizeof(unsigned int))
552 if (get_user(opt, (unsigned int __user *)optval))
556 ax25 = sk_to_ax25(sk);
560 if (ax25->modulus == AX25_MODULUS) {
561 if (opt < 1 || opt > 7) {
566 if (opt < 1 || opt > 63) {
575 if (opt < 1 || opt > ULONG_MAX / HZ) {
579 ax25->rtt = (opt * HZ) >> 1;
584 if (opt < 1 || opt > ULONG_MAX / HZ) {
592 if (opt < 1 || opt > 31) {
600 if (opt < 1 || opt > ULONG_MAX / HZ) {
608 if (opt > ULONG_MAX / (60 * HZ)) {
612 ax25->idle = opt * 60 * HZ;
624 ax25->modulus = opt ? AX25_EMODULUS : AX25_MODULUS;
628 ax25->pidincl = opt ? 1 : 0;
632 ax25->iamdigi = opt ? 1 : 0;
636 if (opt < 16 || opt > 65535) {
643 case SO_BINDTODEVICE:
644 if (optlen > IFNAMSIZ - 1)
645 optlen = IFNAMSIZ - 1;
647 memset(devname, 0, sizeof(devname));
649 if (copy_from_user(devname, optval, optlen)) {
654 if (sk->sk_type == SOCK_SEQPACKET &&
655 (sock->state != SS_UNCONNECTED ||
656 sk->sk_state == TCP_LISTEN)) {
657 res = -EADDRNOTAVAIL;
662 dev = __dev_get_by_name(&init_net, devname);
669 ax25->ax25_dev = ax25_dev_ax25dev(dev);
670 if (!ax25->ax25_dev) {
675 ax25_fillin_cb(ax25, ax25->ax25_dev);
687 static int ax25_getsockopt(struct socket *sock, int level, int optname,
688 char __user *optval, int __user *optlen)
690 struct sock *sk = sock->sk;
692 struct ax25_dev *ax25_dev;
693 char devname[IFNAMSIZ];
698 if (level != SOL_AX25)
701 if (get_user(maxlen, optlen))
707 valptr = (void *) &val;
708 length = min_t(unsigned int, maxlen, sizeof(int));
711 ax25 = sk_to_ax25(sk);
735 val = ax25->idle / (60 * HZ);
743 val = (ax25->modulus == AX25_EMODULUS);
758 case SO_BINDTODEVICE:
759 ax25_dev = ax25->ax25_dev;
761 if (ax25_dev != NULL && ax25_dev->dev != NULL) {
762 strlcpy(devname, ax25_dev->dev->name, sizeof(devname));
763 length = strlen(devname) + 1;
769 valptr = (void *) devname;
778 if (put_user(length, optlen))
781 return copy_to_user(optval, valptr, length) ? -EFAULT : 0;
784 static int ax25_listen(struct socket *sock, int backlog)
786 struct sock *sk = sock->sk;
790 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_LISTEN) {
791 sk->sk_max_ack_backlog = backlog;
792 sk->sk_state = TCP_LISTEN;
804 * XXX: when creating ax25_sock we should update the .obj_size setting
807 static struct proto ax25_proto = {
809 .owner = THIS_MODULE,
810 .obj_size = sizeof(struct ax25_sock),
813 static int ax25_create(struct net *net, struct socket *sock, int protocol,
819 if (protocol < 0 || protocol > SK_PROTOCOL_MAX)
822 if (!net_eq(net, &init_net))
823 return -EAFNOSUPPORT;
825 switch (sock->type) {
827 if (protocol == 0 || protocol == PF_AX25)
828 protocol = AX25_P_TEXT;
834 case PF_AX25: /* For CLX */
835 protocol = AX25_P_TEXT;
848 return -ESOCKTNOSUPPORT;
849 #ifdef CONFIG_NETROM_MODULE
851 if (ax25_protocol_is_registered(AX25_P_NETROM))
852 return -ESOCKTNOSUPPORT;
855 #ifdef CONFIG_ROSE_MODULE
857 if (ax25_protocol_is_registered(AX25_P_ROSE))
858 return -ESOCKTNOSUPPORT;
866 if (!capable(CAP_NET_RAW))
870 return -ESOCKTNOSUPPORT;
873 sk = sk_alloc(net, PF_AX25, GFP_ATOMIC, &ax25_proto, kern);
877 ax25 = ax25_sk(sk)->cb = ax25_create_cb();
883 sock_init_data(sock, sk);
885 sk->sk_destruct = ax25_free_sock;
886 sock->ops = &ax25_proto_ops;
887 sk->sk_protocol = protocol;
894 struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
897 ax25_cb *ax25, *oax25;
899 sk = sk_alloc(sock_net(osk), PF_AX25, GFP_ATOMIC, osk->sk_prot, 0);
903 if ((ax25 = ax25_create_cb()) == NULL) {
908 switch (osk->sk_type) {
919 sock_init_data(NULL, sk);
921 sk->sk_type = osk->sk_type;
922 sk->sk_priority = osk->sk_priority;
923 sk->sk_protocol = osk->sk_protocol;
924 sk->sk_rcvbuf = osk->sk_rcvbuf;
925 sk->sk_sndbuf = osk->sk_sndbuf;
926 sk->sk_state = TCP_ESTABLISHED;
927 sock_copy_flags(sk, osk);
929 oax25 = sk_to_ax25(osk);
931 ax25->modulus = oax25->modulus;
932 ax25->backoff = oax25->backoff;
933 ax25->pidincl = oax25->pidincl;
934 ax25->iamdigi = oax25->iamdigi;
935 ax25->rtt = oax25->rtt;
936 ax25->t1 = oax25->t1;
937 ax25->t2 = oax25->t2;
938 ax25->t3 = oax25->t3;
939 ax25->n2 = oax25->n2;
940 ax25->idle = oax25->idle;
941 ax25->paclen = oax25->paclen;
942 ax25->window = oax25->window;
944 ax25->ax25_dev = ax25_dev;
945 ax25->source_addr = oax25->source_addr;
947 if (oax25->digipeat != NULL) {
948 ax25->digipeat = kmemdup(oax25->digipeat, sizeof(ax25_digi),
950 if (ax25->digipeat == NULL) {
957 ax25_sk(sk)->cb = ax25;
958 sk->sk_destruct = ax25_free_sock;
964 static int ax25_release(struct socket *sock)
966 struct sock *sk = sock->sk;
975 ax25 = sk_to_ax25(sk);
977 if (sk->sk_type == SOCK_SEQPACKET) {
978 switch (ax25->state) {
981 ax25_disconnect(ax25, 0);
983 ax25_destroy_socket(ax25);
988 ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
990 ax25_disconnect(ax25, 0);
992 if (!sock_flag(ax25->sk, SOCK_DESTROY))
993 ax25_destroy_socket(ax25);
998 ax25_clear_queues(ax25);
1001 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
1002 case AX25_PROTO_STD_SIMPLEX:
1003 case AX25_PROTO_STD_DUPLEX:
1004 ax25_send_control(ax25,
1008 ax25_stop_t2timer(ax25);
1009 ax25_stop_t3timer(ax25);
1010 ax25_stop_idletimer(ax25);
1012 #ifdef CONFIG_AX25_DAMA_SLAVE
1013 case AX25_PROTO_DAMA_SLAVE:
1014 ax25_stop_t3timer(ax25);
1015 ax25_stop_idletimer(ax25);
1019 ax25_calculate_t1(ax25);
1020 ax25_start_t1timer(ax25);
1021 ax25->state = AX25_STATE_2;
1022 sk->sk_state = TCP_CLOSE;
1023 sk->sk_shutdown |= SEND_SHUTDOWN;
1024 sk->sk_state_change(sk);
1025 sock_set_flag(sk, SOCK_DESTROY);
1032 sk->sk_state = TCP_CLOSE;
1033 sk->sk_shutdown |= SEND_SHUTDOWN;
1034 sk->sk_state_change(sk);
1035 ax25_destroy_socket(ax25);
1046 * We support a funny extension here so you can (as root) give any callsign
1047 * digipeated via a local address as source. This hack is obsolete now
1048 * that we've implemented support for SO_BINDTODEVICE. It is however small
1049 * and trivially backward compatible.
1051 static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
1053 struct sock *sk = sock->sk;
1054 struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
1055 ax25_dev *ax25_dev = NULL;
1056 ax25_uid_assoc *user;
1061 if (addr_len != sizeof(struct sockaddr_ax25) &&
1062 addr_len != sizeof(struct full_sockaddr_ax25))
1063 /* support for old structure may go away some time
1064 * ax25_bind(): uses old (6 digipeater) socket structure.
1066 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1067 (addr_len > sizeof(struct full_sockaddr_ax25)))
1070 if (addr->fsa_ax25.sax25_family != AF_AX25)
1073 user = ax25_findbyuid(current_euid());
1078 if (ax25_uid_policy && !capable(CAP_NET_ADMIN))
1081 call = addr->fsa_ax25.sax25_call;
1086 ax25 = sk_to_ax25(sk);
1087 if (!sock_flag(sk, SOCK_ZAPPED)) {
1092 ax25->source_addr = call;
1095 * User already set interface with SO_BINDTODEVICE
1097 if (ax25->ax25_dev != NULL)
1100 if (addr_len > sizeof(struct sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
1101 if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) != 0 &&
1102 (ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL) {
1103 err = -EADDRNOTAVAIL;
1107 if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL) {
1108 err = -EADDRNOTAVAIL;
1113 if (ax25_dev != NULL)
1114 ax25_fillin_cb(ax25, ax25_dev);
1118 sock_reset_flag(sk, SOCK_ZAPPED);
1127 * FIXME: nonblock behaviour looks like it may have a bug.
1129 static int __must_check ax25_connect(struct socket *sock,
1130 struct sockaddr *uaddr, int addr_len, int flags)
1132 struct sock *sk = sock->sk;
1133 ax25_cb *ax25 = sk_to_ax25(sk), *ax25t;
1134 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1135 ax25_digi *digi = NULL;
1136 int ct = 0, err = 0;
1139 * some sanity checks. code further down depends on this
1142 if (addr_len == sizeof(struct sockaddr_ax25))
1143 /* support for this will go away in early 2.5.x
1144 * ax25_connect(): uses obsolete socket structure
1147 else if (addr_len != sizeof(struct full_sockaddr_ax25))
1148 /* support for old structure may go away some time
1149 * ax25_connect(): uses old (6 digipeater) socket structure.
1151 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1152 (addr_len > sizeof(struct full_sockaddr_ax25)))
1156 if (fsa->fsa_ax25.sax25_family != AF_AX25)
1161 /* deal with restarts */
1162 if (sock->state == SS_CONNECTING) {
1163 switch (sk->sk_state) {
1164 case TCP_SYN_SENT: /* still trying */
1168 case TCP_ESTABLISHED: /* connection established */
1169 sock->state = SS_CONNECTED;
1172 case TCP_CLOSE: /* connection refused */
1173 sock->state = SS_UNCONNECTED;
1174 err = -ECONNREFUSED;
1179 if (sk->sk_state == TCP_ESTABLISHED && sk->sk_type == SOCK_SEQPACKET) {
1180 err = -EISCONN; /* No reconnect on a seqpacket socket */
1184 sk->sk_state = TCP_CLOSE;
1185 sock->state = SS_UNCONNECTED;
1187 kfree(ax25->digipeat);
1188 ax25->digipeat = NULL;
1191 * Handle digi-peaters to be used.
1193 if (addr_len > sizeof(struct sockaddr_ax25) &&
1194 fsa->fsa_ax25.sax25_ndigis != 0) {
1195 /* Valid number of digipeaters ? */
1196 if (fsa->fsa_ax25.sax25_ndigis < 1 ||
1197 fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS ||
1198 addr_len < sizeof(struct sockaddr_ax25) +
1199 sizeof(ax25_address) * fsa->fsa_ax25.sax25_ndigis) {
1204 if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL) {
1209 digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
1210 digi->lastrepeat = -1;
1212 while (ct < fsa->fsa_ax25.sax25_ndigis) {
1213 if ((fsa->fsa_digipeater[ct].ax25_call[6] &
1214 AX25_HBIT) && ax25->iamdigi) {
1215 digi->repeated[ct] = 1;
1216 digi->lastrepeat = ct;
1218 digi->repeated[ct] = 0;
1220 digi->calls[ct] = fsa->fsa_digipeater[ct];
1226 * Must bind first - autobinding in this may or may not work. If
1227 * the socket is already bound, check to see if the device has
1228 * been filled in, error if it hasn't.
1230 if (sock_flag(sk, SOCK_ZAPPED)) {
1231 /* check if we can remove this feature. It is broken. */
1232 printk(KERN_WARNING "ax25_connect(): %s uses autobind, please contact jreuter@yaina.de\n",
1234 if ((err = ax25_rt_autobind(ax25, &fsa->fsa_ax25.sax25_call)) < 0) {
1239 ax25_fillin_cb(ax25, ax25->ax25_dev);
1242 if (ax25->ax25_dev == NULL) {
1244 err = -EHOSTUNREACH;
1249 if (sk->sk_type == SOCK_SEQPACKET &&
1250 (ax25t=ax25_find_cb(&ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi,
1251 ax25->ax25_dev->dev))) {
1253 err = -EADDRINUSE; /* Already such a connection */
1258 ax25->dest_addr = fsa->fsa_ax25.sax25_call;
1259 ax25->digipeat = digi;
1261 /* First the easy one */
1262 if (sk->sk_type != SOCK_SEQPACKET) {
1263 sock->state = SS_CONNECTED;
1264 sk->sk_state = TCP_ESTABLISHED;
1268 /* Move to connecting socket, ax.25 lapb WAIT_UA.. */
1269 sock->state = SS_CONNECTING;
1270 sk->sk_state = TCP_SYN_SENT;
1272 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
1273 case AX25_PROTO_STD_SIMPLEX:
1274 case AX25_PROTO_STD_DUPLEX:
1275 ax25_std_establish_data_link(ax25);
1278 #ifdef CONFIG_AX25_DAMA_SLAVE
1279 case AX25_PROTO_DAMA_SLAVE:
1280 ax25->modulus = AX25_MODULUS;
1281 ax25->window = ax25->ax25_dev->values[AX25_VALUES_WINDOW];
1282 if (ax25->ax25_dev->dama.slave)
1283 ax25_ds_establish_data_link(ax25);
1285 ax25_std_establish_data_link(ax25);
1290 ax25->state = AX25_STATE_1;
1292 ax25_start_heartbeat(ax25);
1295 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
1300 if (sk->sk_state == TCP_SYN_SENT) {
1304 prepare_to_wait(sk_sleep(sk), &wait,
1305 TASK_INTERRUPTIBLE);
1306 if (sk->sk_state != TCP_SYN_SENT)
1308 if (!signal_pending(current)) {
1317 finish_wait(sk_sleep(sk), &wait);
1323 if (sk->sk_state != TCP_ESTABLISHED) {
1324 /* Not in ABM, not in WAIT_UA -> failed */
1325 sock->state = SS_UNCONNECTED;
1326 err = sock_error(sk); /* Always set at this point */
1330 sock->state = SS_CONNECTED;
1339 static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
1341 struct sk_buff *skb;
1347 if (sock->state != SS_UNCONNECTED)
1350 if ((sk = sock->sk) == NULL)
1354 if (sk->sk_type != SOCK_SEQPACKET) {
1359 if (sk->sk_state != TCP_LISTEN) {
1365 * The read queue this time is holding sockets ready to use
1366 * hooked into the SABM we saved
1369 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
1370 skb = skb_dequeue(&sk->sk_receive_queue);
1374 if (flags & O_NONBLOCK) {
1378 if (!signal_pending(current)) {
1387 finish_wait(sk_sleep(sk), &wait);
1393 sock_graft(newsk, newsock);
1395 /* Now attach up the new socket */
1397 sk->sk_ack_backlog--;
1398 newsock->state = SS_CONNECTED;
1406 static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
1407 int *uaddr_len, int peer)
1409 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
1410 struct sock *sk = sock->sk;
1411 unsigned char ndigi, i;
1415 memset(fsa, 0, sizeof(*fsa));
1417 ax25 = sk_to_ax25(sk);
1420 if (sk->sk_state != TCP_ESTABLISHED) {
1425 fsa->fsa_ax25.sax25_family = AF_AX25;
1426 fsa->fsa_ax25.sax25_call = ax25->dest_addr;
1428 if (ax25->digipeat != NULL) {
1429 ndigi = ax25->digipeat->ndigi;
1430 fsa->fsa_ax25.sax25_ndigis = ndigi;
1431 for (i = 0; i < ndigi; i++)
1432 fsa->fsa_digipeater[i] =
1433 ax25->digipeat->calls[i];
1436 fsa->fsa_ax25.sax25_family = AF_AX25;
1437 fsa->fsa_ax25.sax25_call = ax25->source_addr;
1438 fsa->fsa_ax25.sax25_ndigis = 1;
1439 if (ax25->ax25_dev != NULL) {
1440 memcpy(&fsa->fsa_digipeater[0],
1441 ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
1443 fsa->fsa_digipeater[0] = null_ax25_address;
1446 *uaddr_len = sizeof (struct full_sockaddr_ax25);
1454 static int ax25_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
1456 DECLARE_SOCKADDR(struct sockaddr_ax25 *, usax, msg->msg_name);
1457 struct sock *sk = sock->sk;
1458 struct sockaddr_ax25 sax;
1459 struct sk_buff *skb;
1460 ax25_digi dtmp, *dp;
1463 int lv, err, addr_len = msg->msg_namelen;
1465 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1469 ax25 = sk_to_ax25(sk);
1471 if (sock_flag(sk, SOCK_ZAPPED)) {
1472 err = -EADDRNOTAVAIL;
1476 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1477 send_sig(SIGPIPE, current, 0);
1482 if (ax25->ax25_dev == NULL) {
1487 if (len > ax25->ax25_dev->dev->mtu) {
1493 if (usax->sax25_family != AF_AX25) {
1498 if (addr_len == sizeof(struct sockaddr_ax25))
1499 /* ax25_sendmsg(): uses obsolete socket structure */
1501 else if (addr_len != sizeof(struct full_sockaddr_ax25))
1502 /* support for old structure may go away some time
1503 * ax25_sendmsg(): uses old (6 digipeater)
1506 if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
1507 (addr_len > sizeof(struct full_sockaddr_ax25))) {
1513 if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
1515 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)usax;
1517 /* Valid number of digipeaters ? */
1518 if (usax->sax25_ndigis < 1 ||
1519 usax->sax25_ndigis > AX25_MAX_DIGIS ||
1520 addr_len < sizeof(struct sockaddr_ax25) +
1521 sizeof(ax25_address) * usax->sax25_ndigis) {
1526 dtmp.ndigi = usax->sax25_ndigis;
1528 while (ct < usax->sax25_ndigis) {
1529 dtmp.repeated[ct] = 0;
1530 dtmp.calls[ct] = fsa->fsa_digipeater[ct];
1534 dtmp.lastrepeat = 0;
1538 if (sk->sk_type == SOCK_SEQPACKET &&
1539 ax25cmp(&ax25->dest_addr, &sax.sax25_call)) {
1543 if (usax->sax25_ndigis == 0)
1549 * FIXME: 1003.1g - if the socket is like this because
1550 * it has become closed (not started closed) and is VC
1551 * we ought to SIGPIPE, EPIPE
1553 if (sk->sk_state != TCP_ESTABLISHED) {
1557 sax.sax25_family = AF_AX25;
1558 sax.sax25_call = ax25->dest_addr;
1559 dp = ax25->digipeat;
1562 /* Build a packet */
1563 /* Assume the worst case */
1564 size = len + ax25->ax25_dev->dev->hard_header_len;
1566 skb = sock_alloc_send_skb(sk, size, msg->msg_flags&MSG_DONTWAIT, &err);
1570 skb_reserve(skb, size - len);
1572 /* User data follows immediately after the AX.25 data */
1573 if (memcpy_from_msg(skb_put(skb, len), msg, len)) {
1579 skb_reset_network_header(skb);
1581 /* Add the PID if one is not supplied by the user in the skb */
1583 *skb_push(skb, 1) = sk->sk_protocol;
1585 if (sk->sk_type == SOCK_SEQPACKET) {
1586 /* Connected mode sockets go via the LAPB machine */
1587 if (sk->sk_state != TCP_ESTABLISHED) {
1593 /* Shove it onto the queue and kick */
1594 ax25_output(ax25, ax25->paclen, skb);
1600 skb_push(skb, 1 + ax25_addr_size(dp));
1602 /* Building AX.25 Header */
1604 /* Build an AX.25 header */
1605 lv = ax25_addr_build(skb->data, &ax25->source_addr, &sax.sax25_call,
1606 dp, AX25_COMMAND, AX25_MODULUS);
1608 skb_set_transport_header(skb, lv);
1610 *skb_transport_header(skb) = AX25_UI;
1612 /* Datagram frames go straight out of the door as UI */
1613 ax25_queue_xmit(skb, ax25->ax25_dev->dev);
1623 static int ax25_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
1626 struct sock *sk = sock->sk;
1627 struct sk_buff *skb;
1633 * This works for seqpacket too. The receiver has ordered the
1634 * queue for us! We do one quick check first though
1636 if (sk->sk_type == SOCK_SEQPACKET && sk->sk_state != TCP_ESTABLISHED) {
1641 /* Now we can treat all alike */
1642 skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
1643 flags & MSG_DONTWAIT, &err);
1647 if (!sk_to_ax25(sk)->pidincl)
1648 skb_pull(skb, 1); /* Remove PID */
1650 skb_reset_transport_header(skb);
1653 if (copied > size) {
1655 msg->msg_flags |= MSG_TRUNC;
1658 skb_copy_datagram_msg(skb, 0, msg, copied);
1660 if (msg->msg_name) {
1663 const unsigned char *mac = skb_mac_header(skb);
1664 DECLARE_SOCKADDR(struct sockaddr_ax25 *, sax, msg->msg_name);
1666 memset(sax, 0, sizeof(struct full_sockaddr_ax25));
1667 ax25_addr_parse(mac + 1, skb->data - mac - 1, &src, NULL,
1669 sax->sax25_family = AF_AX25;
1670 /* We set this correctly, even though we may not let the
1671 application know the digi calls further down (because it
1672 did NOT ask to know them). This could get political... **/
1673 sax->sax25_ndigis = digi.ndigi;
1674 sax->sax25_call = src;
1676 if (sax->sax25_ndigis != 0) {
1678 struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)sax;
1680 for (ct = 0; ct < digi.ndigi; ct++)
1681 fsa->fsa_digipeater[ct] = digi.calls[ct];
1683 msg->msg_namelen = sizeof(struct full_sockaddr_ax25);
1686 skb_free_datagram(sk, skb);
1695 static int ax25_shutdown(struct socket *sk, int how)
1697 /* FIXME - generate DM and RNR states */
1701 static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1703 struct sock *sk = sock->sk;
1704 void __user *argp = (void __user *)arg;
1712 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
1715 res = put_user(amount, (int __user *)argp);
1720 struct sk_buff *skb;
1722 /* These two are safe on a single CPU system as only user tasks fiddle here */
1723 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1725 res = put_user(amount, (int __user *) argp);
1730 res = sock_get_timestamp(sk, argp);
1734 res = sock_get_timestampns(sk, argp);
1737 case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
1738 case SIOCAX25DELUID: /* Delete a uid from the uid/call map table */
1739 case SIOCAX25GETUID: {
1740 struct sockaddr_ax25 sax25;
1741 if (copy_from_user(&sax25, argp, sizeof(sax25))) {
1745 res = ax25_uid_ioctl(cmd, &sax25);
1749 case SIOCAX25NOUID: { /* Set the default policy (default/bar) */
1751 if (!capable(CAP_NET_ADMIN)) {
1755 if (get_user(amount, (long __user *)argp)) {
1759 if (amount < 0 || amount > AX25_NOUID_BLOCK) {
1763 ax25_uid_policy = amount;
1771 if (!capable(CAP_NET_ADMIN)) {
1775 res = ax25_rt_ioctl(cmd, argp);
1778 case SIOCAX25CTLCON:
1779 if (!capable(CAP_NET_ADMIN)) {
1783 res = ax25_ctl_ioctl(cmd, argp);
1786 case SIOCAX25GETINFO:
1787 case SIOCAX25GETINFOOLD: {
1788 ax25_cb *ax25 = sk_to_ax25(sk);
1789 struct ax25_info_struct ax25_info;
1791 ax25_info.t1 = ax25->t1 / HZ;
1792 ax25_info.t2 = ax25->t2 / HZ;
1793 ax25_info.t3 = ax25->t3 / HZ;
1794 ax25_info.idle = ax25->idle / (60 * HZ);
1795 ax25_info.n2 = ax25->n2;
1796 ax25_info.t1timer = ax25_display_timer(&ax25->t1timer) / HZ;
1797 ax25_info.t2timer = ax25_display_timer(&ax25->t2timer) / HZ;
1798 ax25_info.t3timer = ax25_display_timer(&ax25->t3timer) / HZ;
1799 ax25_info.idletimer = ax25_display_timer(&ax25->idletimer) / (60 * HZ);
1800 ax25_info.n2count = ax25->n2count;
1801 ax25_info.state = ax25->state;
1802 ax25_info.rcv_q = sk_rmem_alloc_get(sk);
1803 ax25_info.snd_q = sk_wmem_alloc_get(sk);
1804 ax25_info.vs = ax25->vs;
1805 ax25_info.vr = ax25->vr;
1806 ax25_info.va = ax25->va;
1807 ax25_info.vs_max = ax25->vs; /* reserved */
1808 ax25_info.paclen = ax25->paclen;
1809 ax25_info.window = ax25->window;
1811 /* old structure? */
1812 if (cmd == SIOCAX25GETINFOOLD) {
1813 static int warned = 0;
1815 printk(KERN_INFO "%s uses old SIOCAX25GETINFO\n",
1820 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct_deprecated))) {
1825 if (copy_to_user(argp, &ax25_info, sizeof(struct ax25_info_struct))) {
1834 case SIOCAX25ADDFWD:
1835 case SIOCAX25DELFWD: {
1836 struct ax25_fwd_struct ax25_fwd;
1837 if (!capable(CAP_NET_ADMIN)) {
1841 if (copy_from_user(&ax25_fwd, argp, sizeof(ax25_fwd))) {
1845 res = ax25_fwd_ioctl(cmd, &ax25_fwd);
1851 case SIOCGIFDSTADDR:
1852 case SIOCSIFDSTADDR:
1853 case SIOCGIFBRDADDR:
1854 case SIOCSIFBRDADDR:
1855 case SIOCGIFNETMASK:
1856 case SIOCSIFNETMASK:
1871 #ifdef CONFIG_PROC_FS
1873 static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
1874 __acquires(ax25_list_lock)
1876 spin_lock_bh(&ax25_list_lock);
1877 return seq_hlist_start(&ax25_list, *pos);
1880 static void *ax25_info_next(struct seq_file *seq, void *v, loff_t *pos)
1882 return seq_hlist_next(v, &ax25_list, pos);
1885 static void ax25_info_stop(struct seq_file *seq, void *v)
1886 __releases(ax25_list_lock)
1888 spin_unlock_bh(&ax25_list_lock);
1891 static int ax25_info_show(struct seq_file *seq, void *v)
1893 ax25_cb *ax25 = hlist_entry(v, struct ax25_cb, ax25_node);
1900 * 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
1903 seq_printf(seq, "%8.8lx %s %s%s ",
1905 ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
1906 ax2asc(buf, &ax25->source_addr),
1907 ax25->iamdigi? "*":"");
1908 seq_printf(seq, "%s", ax2asc(buf, &ax25->dest_addr));
1910 for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
1911 seq_printf(seq, ",%s%s",
1912 ax2asc(buf, &ax25->digipeat->calls[k]),
1913 ax25->digipeat->repeated[k]? "*":"");
1916 seq_printf(seq, " %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %d %d",
1918 ax25->vs, ax25->vr, ax25->va,
1919 ax25_display_timer(&ax25->t1timer) / HZ, ax25->t1 / HZ,
1920 ax25_display_timer(&ax25->t2timer) / HZ, ax25->t2 / HZ,
1921 ax25_display_timer(&ax25->t3timer) / HZ, ax25->t3 / HZ,
1922 ax25_display_timer(&ax25->idletimer) / (60 * HZ),
1923 ax25->idle / (60 * HZ),
1924 ax25->n2count, ax25->n2,
1929 if (ax25->sk != NULL) {
1930 seq_printf(seq, " %d %d %lu\n",
1931 sk_wmem_alloc_get(ax25->sk),
1932 sk_rmem_alloc_get(ax25->sk),
1933 sock_i_ino(ax25->sk));
1935 seq_puts(seq, " * * *\n");
1940 static const struct seq_operations ax25_info_seqops = {
1941 .start = ax25_info_start,
1942 .next = ax25_info_next,
1943 .stop = ax25_info_stop,
1944 .show = ax25_info_show,
1947 static int ax25_info_open(struct inode *inode, struct file *file)
1949 return seq_open(file, &ax25_info_seqops);
1952 static const struct file_operations ax25_info_fops = {
1953 .owner = THIS_MODULE,
1954 .open = ax25_info_open,
1956 .llseek = seq_lseek,
1957 .release = seq_release,
1962 static const struct net_proto_family ax25_family_ops = {
1964 .create = ax25_create,
1965 .owner = THIS_MODULE,
1968 static const struct proto_ops ax25_proto_ops = {
1970 .owner = THIS_MODULE,
1971 .release = ax25_release,
1973 .connect = ax25_connect,
1974 .socketpair = sock_no_socketpair,
1975 .accept = ax25_accept,
1976 .getname = ax25_getname,
1977 .poll = datagram_poll,
1978 .ioctl = ax25_ioctl,
1979 .listen = ax25_listen,
1980 .shutdown = ax25_shutdown,
1981 .setsockopt = ax25_setsockopt,
1982 .getsockopt = ax25_getsockopt,
1983 .sendmsg = ax25_sendmsg,
1984 .recvmsg = ax25_recvmsg,
1985 .mmap = sock_no_mmap,
1986 .sendpage = sock_no_sendpage,
1990 * Called by socket.c on kernel start up
1992 static struct packet_type ax25_packet_type __read_mostly = {
1993 .type = cpu_to_be16(ETH_P_AX25),
1994 .func = ax25_kiss_rcv,
1997 static struct notifier_block ax25_dev_notifier = {
1998 .notifier_call = ax25_device_event,
2001 static int __init ax25_init(void)
2003 int rc = proto_register(&ax25_proto, 0);
2008 sock_register(&ax25_family_ops);
2009 dev_add_pack(&ax25_packet_type);
2010 register_netdevice_notifier(&ax25_dev_notifier);
2012 proc_create("ax25_route", S_IRUGO, init_net.proc_net,
2014 proc_create("ax25", S_IRUGO, init_net.proc_net, &ax25_info_fops);
2015 proc_create("ax25_calls", S_IRUGO, init_net.proc_net, &ax25_uid_fops);
2019 module_init(ax25_init);
2022 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
2023 MODULE_DESCRIPTION("The amateur radio AX.25 link layer protocol");
2024 MODULE_LICENSE("GPL");
2025 MODULE_ALIAS_NETPROTO(PF_AX25);
2027 static void __exit ax25_exit(void)
2029 remove_proc_entry("ax25_route", init_net.proc_net);
2030 remove_proc_entry("ax25", init_net.proc_net);
2031 remove_proc_entry("ax25_calls", init_net.proc_net);
2033 unregister_netdevice_notifier(&ax25_dev_notifier);
2035 dev_remove_pack(&ax25_packet_type);
2037 sock_unregister(PF_AX25);
2038 proto_unregister(&ax25_proto);
2044 module_exit(ax25_exit);