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) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
8 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
9 * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net)
10 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)
13 #include <linux/capability.h>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/types.h>
19 #include <linux/socket.h>
21 #include <linux/slab.h>
22 #include <linux/kernel.h>
23 #include <linux/sched.h>
24 #include <linux/spinlock.h>
25 #include <linux/timer.h>
26 #include <linux/string.h>
27 #include <linux/sockios.h>
28 #include <linux/net.h>
29 #include <linux/stat.h>
30 #include <net/net_namespace.h>
32 #include <linux/inet.h>
33 #include <linux/netdevice.h>
34 #include <linux/if_arp.h>
35 #include <linux/skbuff.h>
37 #include <asm/system.h>
38 #include <asm/uaccess.h>
39 #include <linux/fcntl.h>
40 #include <linux/termios.h>
42 #include <linux/interrupt.h>
43 #include <linux/notifier.h>
45 #include <linux/proc_fs.h>
46 #include <linux/seq_file.h>
47 #include <net/tcp_states.h>
51 static int rose_ndevs = 10;
53 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
54 int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1;
55 int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2;
56 int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3;
57 int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE;
58 int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB;
59 int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING;
60 int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT;
61 int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
62 int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
64 static HLIST_HEAD(rose_list);
65 static DEFINE_SPINLOCK(rose_list_lock);
67 static const struct proto_ops rose_proto_ops;
69 ax25_address rose_callsign;
72 * ROSE network devices are virtual network devices encapsulating ROSE
73 * frames into AX.25 which will be sent through an AX.25 device, so form a
74 * special "super class" of normal net devices; split their locks off into a
75 * separate class since they always nest.
77 static struct lock_class_key rose_netdev_xmit_lock_key;
78 static struct lock_class_key rose_netdev_addr_lock_key;
80 static void rose_set_lockdep_one(struct net_device *dev,
81 struct netdev_queue *txq,
84 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
87 static void rose_set_lockdep_key(struct net_device *dev)
89 lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key);
90 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
94 * Convert a ROSE address into text.
96 char *rose2asc(char *buf, const rose_address *addr)
98 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
99 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
100 addr->rose_addr[4] == 0x00) {
103 sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
104 addr->rose_addr[1] & 0xFF,
105 addr->rose_addr[2] & 0xFF,
106 addr->rose_addr[3] & 0xFF,
107 addr->rose_addr[4] & 0xFF);
114 * Compare two ROSE addresses, 0 == equal.
116 int rosecmp(rose_address *addr1, rose_address *addr2)
120 for (i = 0; i < 5; i++)
121 if (addr1->rose_addr[i] != addr2->rose_addr[i])
128 * Compare two ROSE addresses for only mask digits, 0 == equal.
130 int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
137 for (i = 0; i < mask; i++) {
141 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
144 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
153 * Socket removal during an interrupt is now safe.
155 static void rose_remove_socket(struct sock *sk)
157 spin_lock_bh(&rose_list_lock);
158 sk_del_node_init(sk);
159 spin_unlock_bh(&rose_list_lock);
163 * Kill all bound sockets on a broken link layer connection to a
164 * particular neighbour.
166 void rose_kill_by_neigh(struct rose_neigh *neigh)
169 struct hlist_node *node;
171 spin_lock_bh(&rose_list_lock);
172 sk_for_each(s, node, &rose_list) {
173 struct rose_sock *rose = rose_sk(s);
175 if (rose->neighbour == neigh) {
176 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
177 rose->neighbour->use--;
178 rose->neighbour = NULL;
181 spin_unlock_bh(&rose_list_lock);
185 * Kill all bound sockets on a dropped device.
187 static void rose_kill_by_device(struct net_device *dev)
190 struct hlist_node *node;
192 spin_lock_bh(&rose_list_lock);
193 sk_for_each(s, node, &rose_list) {
194 struct rose_sock *rose = rose_sk(s);
196 if (rose->device == dev) {
197 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
198 rose->neighbour->use--;
202 spin_unlock_bh(&rose_list_lock);
206 * Handle device status changes.
208 static int rose_device_event(struct notifier_block *this, unsigned long event,
211 struct net_device *dev = (struct net_device *)ptr;
213 if (!net_eq(dev_net(dev), &init_net))
216 if (event != NETDEV_DOWN)
221 rose_kill_by_device(dev);
224 rose_link_device_down(dev);
225 rose_rt_device_down(dev);
233 * Add a socket to the bound sockets list.
235 static void rose_insert_socket(struct sock *sk)
238 spin_lock_bh(&rose_list_lock);
239 sk_add_node(sk, &rose_list);
240 spin_unlock_bh(&rose_list_lock);
244 * Find a socket that wants to accept the Call Request we just
247 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
250 struct hlist_node *node;
252 spin_lock_bh(&rose_list_lock);
253 sk_for_each(s, node, &rose_list) {
254 struct rose_sock *rose = rose_sk(s);
256 if (!rosecmp(&rose->source_addr, addr) &&
257 !ax25cmp(&rose->source_call, call) &&
258 !rose->source_ndigis && s->sk_state == TCP_LISTEN)
262 sk_for_each(s, node, &rose_list) {
263 struct rose_sock *rose = rose_sk(s);
265 if (!rosecmp(&rose->source_addr, addr) &&
266 !ax25cmp(&rose->source_call, &null_ax25_address) &&
267 s->sk_state == TCP_LISTEN)
272 spin_unlock_bh(&rose_list_lock);
277 * Find a connected ROSE socket given my LCI and device.
279 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
282 struct hlist_node *node;
284 spin_lock_bh(&rose_list_lock);
285 sk_for_each(s, node, &rose_list) {
286 struct rose_sock *rose = rose_sk(s);
288 if (rose->lci == lci && rose->neighbour == neigh)
293 spin_unlock_bh(&rose_list_lock);
298 * Find a unique LCI for a given device.
300 unsigned int rose_new_lci(struct rose_neigh *neigh)
304 if (neigh->dce_mode) {
305 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
306 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
309 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
310 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
320 void rose_destroy_socket(struct sock *);
323 * Handler for deferred kills.
325 static void rose_destroy_timer(unsigned long data)
327 rose_destroy_socket((struct sock *)data);
331 * This is called from user mode and the timers. Thus it protects itself
332 * against interrupt users but doesn't worry about being called during
333 * work. Once it is removed from the queue no interrupt or bottom half
334 * will touch it and we are (fairly 8-) ) safe.
336 void rose_destroy_socket(struct sock *sk)
340 rose_remove_socket(sk);
341 rose_stop_heartbeat(sk);
342 rose_stop_idletimer(sk);
345 rose_clear_queues(sk); /* Flush the queues */
347 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
348 if (skb->sk != sk) { /* A pending connection */
349 /* Queue the unaccepted socket for death */
350 sock_set_flag(skb->sk, SOCK_DEAD);
351 rose_start_heartbeat(skb->sk);
352 rose_sk(skb->sk)->state = ROSE_STATE_0;
358 if (sk_has_allocations(sk)) {
359 /* Defer: outstanding buffers */
360 setup_timer(&sk->sk_timer, rose_destroy_timer,
362 sk->sk_timer.expires = jiffies + 10 * HZ;
363 add_timer(&sk->sk_timer);
369 * Handling for system calls applied via the various interfaces to a
370 * ROSE socket object.
373 static int rose_setsockopt(struct socket *sock, int level, int optname,
374 char __user *optval, unsigned int optlen)
376 struct sock *sk = sock->sk;
377 struct rose_sock *rose = rose_sk(sk);
380 if (level != SOL_ROSE)
383 if (optlen < sizeof(int))
386 if (get_user(opt, (int __user *)optval))
391 rose->defer = opt ? 1 : 0;
421 rose->idle = opt * 60 * HZ;
425 rose->qbitincl = opt ? 1 : 0;
433 static int rose_getsockopt(struct socket *sock, int level, int optname,
434 char __user *optval, int __user *optlen)
436 struct sock *sk = sock->sk;
437 struct rose_sock *rose = rose_sk(sk);
441 if (level != SOL_ROSE)
444 if (get_user(len, optlen))
472 val = rose->idle / (60 * HZ);
476 val = rose->qbitincl;
483 len = min_t(unsigned int, len, sizeof(int));
485 if (put_user(len, optlen))
488 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
491 static int rose_listen(struct socket *sock, int backlog)
493 struct sock *sk = sock->sk;
495 if (sk->sk_state != TCP_LISTEN) {
496 struct rose_sock *rose = rose_sk(sk);
498 rose->dest_ndigis = 0;
499 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
500 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
501 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
502 sk->sk_max_ack_backlog = backlog;
503 sk->sk_state = TCP_LISTEN;
510 static struct proto rose_proto = {
512 .owner = THIS_MODULE,
513 .obj_size = sizeof(struct rose_sock),
516 static int rose_create(struct net *net, struct socket *sock, int protocol,
520 struct rose_sock *rose;
522 if (!net_eq(net, &init_net))
523 return -EAFNOSUPPORT;
525 if (sock->type != SOCK_SEQPACKET || protocol != 0)
526 return -ESOCKTNOSUPPORT;
528 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
534 sock_init_data(sock, sk);
536 skb_queue_head_init(&rose->ack_queue);
538 skb_queue_head_init(&rose->frag_queue);
542 sock->ops = &rose_proto_ops;
543 sk->sk_protocol = protocol;
545 init_timer(&rose->timer);
546 init_timer(&rose->idletimer);
548 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
549 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
550 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
551 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
552 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
554 rose->state = ROSE_STATE_0;
559 static struct sock *rose_make_new(struct sock *osk)
562 struct rose_sock *rose, *orose;
564 if (osk->sk_type != SOCK_SEQPACKET)
567 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto);
573 sock_init_data(NULL, sk);
575 skb_queue_head_init(&rose->ack_queue);
577 skb_queue_head_init(&rose->frag_queue);
581 sk->sk_type = osk->sk_type;
582 sk->sk_priority = osk->sk_priority;
583 sk->sk_protocol = osk->sk_protocol;
584 sk->sk_rcvbuf = osk->sk_rcvbuf;
585 sk->sk_sndbuf = osk->sk_sndbuf;
586 sk->sk_state = TCP_ESTABLISHED;
587 sock_copy_flags(sk, osk);
589 init_timer(&rose->timer);
590 init_timer(&rose->idletimer);
592 orose = rose_sk(osk);
593 rose->t1 = orose->t1;
594 rose->t2 = orose->t2;
595 rose->t3 = orose->t3;
596 rose->hb = orose->hb;
597 rose->idle = orose->idle;
598 rose->defer = orose->defer;
599 rose->device = orose->device;
600 rose->qbitincl = orose->qbitincl;
605 static int rose_release(struct socket *sock)
607 struct sock *sk = sock->sk;
608 struct rose_sock *rose;
610 if (sk == NULL) return 0;
617 switch (rose->state) {
620 rose_disconnect(sk, 0, -1, -1);
622 rose_destroy_socket(sk);
626 rose->neighbour->use--;
628 rose_disconnect(sk, 0, -1, -1);
630 rose_destroy_socket(sk);
637 rose_clear_queues(sk);
638 rose_stop_idletimer(sk);
639 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
640 rose_start_t3timer(sk);
641 rose->state = ROSE_STATE_2;
642 sk->sk_state = TCP_CLOSE;
643 sk->sk_shutdown |= SEND_SHUTDOWN;
644 sk->sk_state_change(sk);
645 sock_set_flag(sk, SOCK_DEAD);
646 sock_set_flag(sk, SOCK_DESTROY);
660 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
662 struct sock *sk = sock->sk;
663 struct rose_sock *rose = rose_sk(sk);
664 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
665 struct net_device *dev;
666 ax25_address *source;
667 ax25_uid_assoc *user;
670 if (!sock_flag(sk, SOCK_ZAPPED))
673 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
676 if (addr->srose_family != AF_ROSE)
679 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
682 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
685 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) {
686 SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n");
687 return -EADDRNOTAVAIL;
690 source = &addr->srose_call;
692 user = ax25_findbyuid(current_euid());
694 rose->source_call = user->call;
697 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
699 rose->source_call = *source;
702 rose->source_addr = addr->srose_addr;
704 rose->source_ndigis = addr->srose_ndigis;
706 if (addr_len == sizeof(struct full_sockaddr_rose)) {
707 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
708 for (n = 0 ; n < addr->srose_ndigis ; n++)
709 rose->source_digis[n] = full_addr->srose_digis[n];
711 if (rose->source_ndigis == 1) {
712 rose->source_digis[0] = addr->srose_digi;
716 rose_insert_socket(sk);
718 sock_reset_flag(sk, SOCK_ZAPPED);
719 SOCK_DEBUG(sk, "ROSE: socket is bound\n");
723 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
725 struct sock *sk = sock->sk;
726 struct rose_sock *rose = rose_sk(sk);
727 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
728 unsigned char cause, diagnostic;
729 struct net_device *dev;
730 ax25_uid_assoc *user;
733 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
736 if (addr->srose_family != AF_ROSE)
739 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
742 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
745 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
746 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
751 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
752 /* Connect completed during a ERESTARTSYS event */
753 sock->state = SS_CONNECTED;
757 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
758 sock->state = SS_UNCONNECTED;
763 if (sk->sk_state == TCP_ESTABLISHED) {
764 /* No reconnect on a seqpacket socket */
769 sk->sk_state = TCP_CLOSE;
770 sock->state = SS_UNCONNECTED;
772 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
774 if (!rose->neighbour) {
779 rose->lci = rose_new_lci(rose->neighbour);
785 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
786 sock_reset_flag(sk, SOCK_ZAPPED);
788 if ((dev = rose_dev_first()) == NULL) {
793 user = ax25_findbyuid(current_euid());
799 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
800 rose->source_call = user->call;
804 rose_insert_socket(sk); /* Finish the bind */
806 rose->dest_addr = addr->srose_addr;
807 rose->dest_call = addr->srose_call;
808 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
809 rose->dest_ndigis = addr->srose_ndigis;
811 if (addr_len == sizeof(struct full_sockaddr_rose)) {
812 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
813 for (n = 0 ; n < addr->srose_ndigis ; n++)
814 rose->dest_digis[n] = full_addr->srose_digis[n];
816 if (rose->dest_ndigis == 1) {
817 rose->dest_digis[0] = addr->srose_digi;
821 /* Move to connecting socket, start sending Connect Requests */
822 sock->state = SS_CONNECTING;
823 sk->sk_state = TCP_SYN_SENT;
825 rose->state = ROSE_STATE_1;
827 rose->neighbour->use++;
829 rose_write_internal(sk, ROSE_CALL_REQUEST);
830 rose_start_heartbeat(sk);
831 rose_start_t1timer(sk);
834 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
840 * A Connect Ack with Choke or timeout or failed routing will go to
843 if (sk->sk_state == TCP_SYN_SENT) {
847 prepare_to_wait(sk_sleep(sk), &wait,
849 if (sk->sk_state != TCP_SYN_SENT)
851 if (!signal_pending(current)) {
860 finish_wait(sk_sleep(sk), &wait);
866 if (sk->sk_state != TCP_ESTABLISHED) {
867 sock->state = SS_UNCONNECTED;
868 err = sock_error(sk); /* Always set at this point */
872 sock->state = SS_CONNECTED;
880 static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
888 if ((sk = sock->sk) == NULL)
892 if (sk->sk_type != SOCK_SEQPACKET) {
897 if (sk->sk_state != TCP_LISTEN) {
903 * The write queue this time is holding sockets ready to use
904 * hooked into the SABM we saved
907 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
909 skb = skb_dequeue(&sk->sk_receive_queue);
913 if (flags & O_NONBLOCK) {
917 if (!signal_pending(current)) {
926 finish_wait(sk_sleep(sk), &wait);
931 sock_graft(newsk, newsock);
933 /* Now attach up the new socket */
936 sk->sk_ack_backlog--;
944 static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
945 int *uaddr_len, int peer)
947 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
948 struct sock *sk = sock->sk;
949 struct rose_sock *rose = rose_sk(sk);
952 memset(srose, 0, sizeof(*srose));
954 if (sk->sk_state != TCP_ESTABLISHED)
956 srose->srose_family = AF_ROSE;
957 srose->srose_addr = rose->dest_addr;
958 srose->srose_call = rose->dest_call;
959 srose->srose_ndigis = rose->dest_ndigis;
960 for (n = 0; n < rose->dest_ndigis; n++)
961 srose->srose_digis[n] = rose->dest_digis[n];
963 srose->srose_family = AF_ROSE;
964 srose->srose_addr = rose->source_addr;
965 srose->srose_call = rose->source_call;
966 srose->srose_ndigis = rose->source_ndigis;
967 for (n = 0; n < rose->source_ndigis; n++)
968 srose->srose_digis[n] = rose->source_digis[n];
971 *uaddr_len = sizeof(struct full_sockaddr_rose);
975 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
979 struct rose_sock *make_rose;
980 struct rose_facilities_struct facilities;
983 skb->sk = NULL; /* Initially we don't know who it's for */
986 * skb->data points to the rose frame start
988 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
990 len = (((skb->data[3] >> 4) & 0x0F) + 1) >> 1;
991 len += (((skb->data[3] >> 0) & 0x0F) + 1) >> 1;
992 if (!rose_parse_facilities(skb->data + len + 4, &facilities)) {
993 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
997 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
1000 * We can't accept the Call Request.
1002 if (sk == NULL || sk_acceptq_is_full(sk) ||
1003 (make = rose_make_new(sk)) == NULL) {
1004 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
1009 make->sk_state = TCP_ESTABLISHED;
1010 make_rose = rose_sk(make);
1012 make_rose->lci = lci;
1013 make_rose->dest_addr = facilities.dest_addr;
1014 make_rose->dest_call = facilities.dest_call;
1015 make_rose->dest_ndigis = facilities.dest_ndigis;
1016 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1017 make_rose->dest_digis[n] = facilities.dest_digis[n];
1018 make_rose->source_addr = facilities.source_addr;
1019 make_rose->source_call = facilities.source_call;
1020 make_rose->source_ndigis = facilities.source_ndigis;
1021 for (n = 0 ; n < facilities.source_ndigis ; n++)
1022 make_rose->source_digis[n]= facilities.source_digis[n];
1023 make_rose->neighbour = neigh;
1024 make_rose->device = dev;
1025 make_rose->facilities = facilities;
1027 make_rose->neighbour->use++;
1029 if (rose_sk(sk)->defer) {
1030 make_rose->state = ROSE_STATE_5;
1032 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1033 make_rose->state = ROSE_STATE_3;
1034 rose_start_idletimer(make);
1037 make_rose->condition = 0x00;
1042 sk->sk_ack_backlog++;
1044 rose_insert_socket(make);
1046 skb_queue_head(&sk->sk_receive_queue, skb);
1048 rose_start_heartbeat(make);
1050 if (!sock_flag(sk, SOCK_DEAD))
1051 sk->sk_data_ready(sk, skb->len);
1056 static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1057 struct msghdr *msg, size_t len)
1059 struct sock *sk = sock->sk;
1060 struct rose_sock *rose = rose_sk(sk);
1061 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1063 struct full_sockaddr_rose srose;
1064 struct sk_buff *skb;
1065 unsigned char *asmptr;
1066 int n, size, qbit = 0;
1068 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1071 if (sock_flag(sk, SOCK_ZAPPED))
1072 return -EADDRNOTAVAIL;
1074 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1075 send_sig(SIGPIPE, current, 0);
1079 if (rose->neighbour == NULL || rose->device == NULL)
1080 return -ENETUNREACH;
1082 if (usrose != NULL) {
1083 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1085 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1086 memcpy(&srose, usrose, msg->msg_namelen);
1087 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1088 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1090 if (srose.srose_ndigis != rose->dest_ndigis)
1092 if (srose.srose_ndigis == rose->dest_ndigis) {
1093 for (n = 0 ; n < srose.srose_ndigis ; n++)
1094 if (ax25cmp(&rose->dest_digis[n],
1095 &srose.srose_digis[n]))
1098 if (srose.srose_family != AF_ROSE)
1101 if (sk->sk_state != TCP_ESTABLISHED)
1104 srose.srose_family = AF_ROSE;
1105 srose.srose_addr = rose->dest_addr;
1106 srose.srose_call = rose->dest_call;
1107 srose.srose_ndigis = rose->dest_ndigis;
1108 for (n = 0 ; n < rose->dest_ndigis ; n++)
1109 srose.srose_digis[n] = rose->dest_digis[n];
1112 SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n");
1114 /* Build a packet */
1115 SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n");
1116 /* Sanity check the packet size */
1120 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1122 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1125 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1128 * Put the data on the end
1130 SOCK_DEBUG(sk, "ROSE: Appending user data\n");
1132 skb_reset_transport_header(skb);
1135 err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1142 * If the Q BIT Include socket option is in force, the first
1143 * byte of the user data is the logical value of the Q Bit.
1145 if (rose->qbitincl) {
1146 qbit = skb->data[0];
1151 * Push down the ROSE header
1153 asmptr = skb_push(skb, ROSE_MIN_LEN);
1155 SOCK_DEBUG(sk, "ROSE: Building Network Header.\n");
1157 /* Build a ROSE Network header */
1158 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1159 asmptr[1] = (rose->lci >> 0) & 0xFF;
1160 asmptr[2] = ROSE_DATA;
1163 asmptr[0] |= ROSE_Q_BIT;
1165 SOCK_DEBUG(sk, "ROSE: Built header.\n");
1167 SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n");
1169 if (sk->sk_state != TCP_ESTABLISHED) {
1175 #define ROSE_PACLEN (256-ROSE_MIN_LEN)
1176 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1177 unsigned char header[ROSE_MIN_LEN];
1178 struct sk_buff *skbn;
1182 /* Save a copy of the Header */
1183 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
1184 skb_pull(skb, ROSE_MIN_LEN);
1186 frontlen = skb_headroom(skb);
1188 while (skb->len > 0) {
1189 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1198 skb_reserve(skbn, frontlen);
1200 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1202 /* Copy the user data */
1203 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
1206 /* Duplicate the Header */
1207 skb_push(skbn, ROSE_MIN_LEN);
1208 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
1211 skbn->data[2] |= M_BIT;
1213 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1219 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1222 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1231 static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1232 struct msghdr *msg, size_t size, int flags)
1234 struct sock *sk = sock->sk;
1235 struct rose_sock *rose = rose_sk(sk);
1236 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1238 unsigned char *asmptr;
1239 struct sk_buff *skb;
1243 * This works for seqpacket too. The receiver has ordered the queue for
1244 * us! We do one quick check first though
1246 if (sk->sk_state != TCP_ESTABLISHED)
1249 /* Now we can treat all alike */
1250 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1253 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1255 skb_pull(skb, ROSE_MIN_LEN);
1257 if (rose->qbitincl) {
1258 asmptr = skb_push(skb, 1);
1262 skb_reset_transport_header(skb);
1265 if (copied > size) {
1267 msg->msg_flags |= MSG_TRUNC;
1270 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1272 if (srose != NULL) {
1273 srose->srose_family = AF_ROSE;
1274 srose->srose_addr = rose->dest_addr;
1275 srose->srose_call = rose->dest_call;
1276 srose->srose_ndigis = rose->dest_ndigis;
1277 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1278 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1279 for (n = 0 ; n < rose->dest_ndigis ; n++)
1280 full_srose->srose_digis[n] = rose->dest_digis[n];
1281 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1283 if (rose->dest_ndigis >= 1) {
1284 srose->srose_ndigis = 1;
1285 srose->srose_digi = rose->dest_digis[0];
1287 msg->msg_namelen = sizeof(struct sockaddr_rose);
1291 skb_free_datagram(sk, skb);
1297 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1299 struct sock *sk = sock->sk;
1300 struct rose_sock *rose = rose_sk(sk);
1301 void __user *argp = (void __user *)arg;
1307 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
1310 return put_user(amount, (unsigned int __user *) argp);
1314 struct sk_buff *skb;
1316 /* These two are safe on a single CPU system as only user tasks fiddle here */
1317 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1319 return put_user(amount, (unsigned int __user *) argp);
1323 return sock_get_timestamp(sk, (struct timeval __user *) argp);
1326 return sock_get_timestampns(sk, (struct timespec __user *) argp);
1330 case SIOCGIFDSTADDR:
1331 case SIOCSIFDSTADDR:
1332 case SIOCGIFBRDADDR:
1333 case SIOCSIFBRDADDR:
1334 case SIOCGIFNETMASK:
1335 case SIOCSIFNETMASK:
1343 if (!capable(CAP_NET_ADMIN))
1345 return rose_rt_ioctl(cmd, argp);
1347 case SIOCRSGCAUSE: {
1348 struct rose_cause_struct rose_cause;
1349 rose_cause.cause = rose->cause;
1350 rose_cause.diagnostic = rose->diagnostic;
1351 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1354 case SIOCRSSCAUSE: {
1355 struct rose_cause_struct rose_cause;
1356 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1358 rose->cause = rose_cause.cause;
1359 rose->diagnostic = rose_cause.diagnostic;
1364 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1365 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1366 ax25_listen_release(&rose_callsign, NULL);
1367 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1369 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1370 return ax25_listen_register(&rose_callsign, NULL);
1375 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1378 if (rose->state == ROSE_STATE_5) {
1379 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1380 rose_start_idletimer(sk);
1381 rose->condition = 0x00;
1386 rose->state = ROSE_STATE_3;
1391 return -ENOIOCTLCMD;
1397 #ifdef CONFIG_PROC_FS
1398 static void *rose_info_start(struct seq_file *seq, loff_t *pos)
1399 __acquires(rose_list_lock)
1401 spin_lock_bh(&rose_list_lock);
1402 return seq_hlist_start_head(&rose_list, *pos);
1405 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1407 return seq_hlist_next(v, &rose_list, pos);
1410 static void rose_info_stop(struct seq_file *seq, void *v)
1411 __releases(rose_list_lock)
1413 spin_unlock_bh(&rose_list_lock);
1416 static int rose_info_show(struct seq_file *seq, void *v)
1418 char buf[11], rsbuf[11];
1420 if (v == SEQ_START_TOKEN)
1422 "dest_addr dest_call src_addr src_call dev lci neigh st vs vr va t t1 t2 t3 hb idle Snd-Q Rcv-Q inode\n");
1425 struct sock *s = sk_entry(v);
1426 struct rose_sock *rose = rose_sk(s);
1427 const char *devname, *callsign;
1428 const struct net_device *dev = rose->device;
1433 devname = dev->name;
1435 seq_printf(seq, "%-10s %-9s ",
1436 rose2asc(rsbuf, &rose->dest_addr),
1437 ax2asc(buf, &rose->dest_call));
1439 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1440 callsign = "??????-?";
1442 callsign = ax2asc(buf, &rose->source_call);
1445 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
1446 rose2asc(rsbuf, &rose->source_addr),
1450 (rose->neighbour) ? rose->neighbour->number : 0,
1455 ax25_display_timer(&rose->timer) / HZ,
1460 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1461 rose->idle / (60 * HZ),
1462 sk_wmem_alloc_get(s),
1463 sk_rmem_alloc_get(s),
1464 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1470 static const struct seq_operations rose_info_seqops = {
1471 .start = rose_info_start,
1472 .next = rose_info_next,
1473 .stop = rose_info_stop,
1474 .show = rose_info_show,
1477 static int rose_info_open(struct inode *inode, struct file *file)
1479 return seq_open(file, &rose_info_seqops);
1482 static const struct file_operations rose_info_fops = {
1483 .owner = THIS_MODULE,
1484 .open = rose_info_open,
1486 .llseek = seq_lseek,
1487 .release = seq_release,
1489 #endif /* CONFIG_PROC_FS */
1491 static const struct net_proto_family rose_family_ops = {
1493 .create = rose_create,
1494 .owner = THIS_MODULE,
1497 static const struct proto_ops rose_proto_ops = {
1499 .owner = THIS_MODULE,
1500 .release = rose_release,
1502 .connect = rose_connect,
1503 .socketpair = sock_no_socketpair,
1504 .accept = rose_accept,
1505 .getname = rose_getname,
1506 .poll = datagram_poll,
1507 .ioctl = rose_ioctl,
1508 .listen = rose_listen,
1509 .shutdown = sock_no_shutdown,
1510 .setsockopt = rose_setsockopt,
1511 .getsockopt = rose_getsockopt,
1512 .sendmsg = rose_sendmsg,
1513 .recvmsg = rose_recvmsg,
1514 .mmap = sock_no_mmap,
1515 .sendpage = sock_no_sendpage,
1518 static struct notifier_block rose_dev_notifier = {
1519 .notifier_call = rose_device_event,
1522 static struct net_device **dev_rose;
1524 static struct ax25_protocol rose_pid = {
1526 .func = rose_route_frame
1529 static struct ax25_linkfail rose_linkfail_notifier = {
1530 .func = rose_link_failed
1533 static int __init rose_proto_init(void)
1538 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1539 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1544 rc = proto_register(&rose_proto, 0);
1548 rose_callsign = null_ax25_address;
1550 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1551 if (dev_rose == NULL) {
1552 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
1554 goto out_proto_unregister;
1557 for (i = 0; i < rose_ndevs; i++) {
1558 struct net_device *dev;
1559 char name[IFNAMSIZ];
1561 sprintf(name, "rose%d", i);
1562 dev = alloc_netdev(0, name, rose_setup);
1564 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
1568 rc = register_netdev(dev);
1570 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1574 rose_set_lockdep_key(dev);
1578 sock_register(&rose_family_ops);
1579 register_netdevice_notifier(&rose_dev_notifier);
1581 ax25_register_pid(&rose_pid);
1582 ax25_linkfail_register(&rose_linkfail_notifier);
1584 #ifdef CONFIG_SYSCTL
1585 rose_register_sysctl();
1587 rose_loopback_init();
1589 rose_add_loopback_neigh();
1591 proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops);
1592 proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops);
1593 proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops);
1594 proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops);
1599 unregister_netdev(dev_rose[i]);
1600 free_netdev(dev_rose[i]);
1603 out_proto_unregister:
1604 proto_unregister(&rose_proto);
1607 module_init(rose_proto_init);
1609 module_param(rose_ndevs, int, 0);
1610 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1612 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1613 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1614 MODULE_LICENSE("GPL");
1615 MODULE_ALIAS_NETPROTO(PF_ROSE);
1617 static void __exit rose_exit(void)
1621 proc_net_remove(&init_net, "rose");
1622 proc_net_remove(&init_net, "rose_neigh");
1623 proc_net_remove(&init_net, "rose_nodes");
1624 proc_net_remove(&init_net, "rose_routes");
1625 rose_loopback_clear();
1629 ax25_protocol_release(AX25_P_ROSE);
1630 ax25_linkfail_release(&rose_linkfail_notifier);
1632 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1633 ax25_listen_release(&rose_callsign, NULL);
1635 #ifdef CONFIG_SYSCTL
1636 rose_unregister_sysctl();
1638 unregister_netdevice_notifier(&rose_dev_notifier);
1640 sock_unregister(PF_ROSE);
1642 for (i = 0; i < rose_ndevs; i++) {
1643 struct net_device *dev = dev_rose[i];
1646 unregister_netdev(dev);
1652 proto_unregister(&rose_proto);
1655 module_exit(rose_exit);