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/kernel.h>
22 #include <linux/sched.h>
23 #include <linux/spinlock.h>
24 #include <linux/timer.h>
25 #include <linux/string.h>
26 #include <linux/sockios.h>
27 #include <linux/net.h>
28 #include <linux/stat.h>
29 #include <net/net_namespace.h>
31 #include <linux/inet.h>
32 #include <linux/netdevice.h>
33 #include <linux/if_arp.h>
34 #include <linux/skbuff.h>
36 #include <asm/system.h>
37 #include <asm/uaccess.h>
38 #include <linux/fcntl.h>
39 #include <linux/termios.h>
41 #include <linux/interrupt.h>
42 #include <linux/notifier.h>
44 #include <linux/proc_fs.h>
45 #include <linux/seq_file.h>
46 #include <net/tcp_states.h>
50 static int rose_ndevs = 10;
52 int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
53 int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1;
54 int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2;
55 int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3;
56 int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE;
57 int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB;
58 int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING;
59 int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT;
60 int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
61 int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
63 static HLIST_HEAD(rose_list);
64 static DEFINE_SPINLOCK(rose_list_lock);
66 static struct proto_ops rose_proto_ops;
68 ax25_address rose_callsign;
71 * ROSE network devices are virtual network devices encapsulating ROSE
72 * frames into AX.25 which will be sent through an AX.25 device, so form a
73 * special "super class" of normal net devices; split their locks off into a
74 * separate class since they always nest.
76 static struct lock_class_key rose_netdev_xmit_lock_key;
78 static void rose_set_lockdep_one(struct net_device *dev,
79 struct netdev_queue *txq,
82 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
85 static void rose_set_lockdep_key(struct net_device *dev)
87 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
91 * Convert a ROSE address into text.
93 const char *rose2asc(const rose_address *addr)
95 static char buffer[11];
97 if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
98 addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
99 addr->rose_addr[4] == 0x00) {
102 sprintf(buffer, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
103 addr->rose_addr[1] & 0xFF,
104 addr->rose_addr[2] & 0xFF,
105 addr->rose_addr[3] & 0xFF,
106 addr->rose_addr[4] & 0xFF);
113 * Compare two ROSE addresses, 0 == equal.
115 int rosecmp(rose_address *addr1, rose_address *addr2)
119 for (i = 0; i < 5; i++)
120 if (addr1->rose_addr[i] != addr2->rose_addr[i])
127 * Compare two ROSE addresses for only mask digits, 0 == equal.
129 int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
136 for (i = 0; i < mask; i++) {
140 if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
143 if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
152 * Socket removal during an interrupt is now safe.
154 static void rose_remove_socket(struct sock *sk)
156 spin_lock_bh(&rose_list_lock);
157 sk_del_node_init(sk);
158 spin_unlock_bh(&rose_list_lock);
162 * Kill all bound sockets on a broken link layer connection to a
163 * particular neighbour.
165 void rose_kill_by_neigh(struct rose_neigh *neigh)
168 struct hlist_node *node;
170 spin_lock_bh(&rose_list_lock);
171 sk_for_each(s, node, &rose_list) {
172 struct rose_sock *rose = rose_sk(s);
174 if (rose->neighbour == neigh) {
175 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
176 rose->neighbour->use--;
177 rose->neighbour = NULL;
180 spin_unlock_bh(&rose_list_lock);
184 * Kill all bound sockets on a dropped device.
186 static void rose_kill_by_device(struct net_device *dev)
189 struct hlist_node *node;
191 spin_lock_bh(&rose_list_lock);
192 sk_for_each(s, node, &rose_list) {
193 struct rose_sock *rose = rose_sk(s);
195 if (rose->device == dev) {
196 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
197 rose->neighbour->use--;
201 spin_unlock_bh(&rose_list_lock);
205 * Handle device status changes.
207 static int rose_device_event(struct notifier_block *this, unsigned long event,
210 struct net_device *dev = (struct net_device *)ptr;
212 if (!net_eq(dev_net(dev), &init_net))
215 if (event != NETDEV_DOWN)
220 rose_kill_by_device(dev);
223 rose_link_device_down(dev);
224 rose_rt_device_down(dev);
232 * Add a socket to the bound sockets list.
234 static void rose_insert_socket(struct sock *sk)
237 spin_lock_bh(&rose_list_lock);
238 sk_add_node(sk, &rose_list);
239 spin_unlock_bh(&rose_list_lock);
243 * Find a socket that wants to accept the Call Request we just
246 static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
249 struct hlist_node *node;
251 spin_lock_bh(&rose_list_lock);
252 sk_for_each(s, node, &rose_list) {
253 struct rose_sock *rose = rose_sk(s);
255 if (!rosecmp(&rose->source_addr, addr) &&
256 !ax25cmp(&rose->source_call, call) &&
257 !rose->source_ndigis && s->sk_state == TCP_LISTEN)
261 sk_for_each(s, node, &rose_list) {
262 struct rose_sock *rose = rose_sk(s);
264 if (!rosecmp(&rose->source_addr, addr) &&
265 !ax25cmp(&rose->source_call, &null_ax25_address) &&
266 s->sk_state == TCP_LISTEN)
271 spin_unlock_bh(&rose_list_lock);
276 * Find a connected ROSE socket given my LCI and device.
278 struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
281 struct hlist_node *node;
283 spin_lock_bh(&rose_list_lock);
284 sk_for_each(s, node, &rose_list) {
285 struct rose_sock *rose = rose_sk(s);
287 if (rose->lci == lci && rose->neighbour == neigh)
292 spin_unlock_bh(&rose_list_lock);
297 * Find a unique LCI for a given device.
299 unsigned int rose_new_lci(struct rose_neigh *neigh)
303 if (neigh->dce_mode) {
304 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
305 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
308 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
309 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
319 void rose_destroy_socket(struct sock *);
322 * Handler for deferred kills.
324 static void rose_destroy_timer(unsigned long data)
326 rose_destroy_socket((struct sock *)data);
330 * This is called from user mode and the timers. Thus it protects itself
331 * against interrupt users but doesn't worry about being called during
332 * work. Once it is removed from the queue no interrupt or bottom half
333 * will touch it and we are (fairly 8-) ) safe.
335 void rose_destroy_socket(struct sock *sk)
339 rose_remove_socket(sk);
340 rose_stop_heartbeat(sk);
341 rose_stop_idletimer(sk);
344 rose_clear_queues(sk); /* Flush the queues */
346 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
347 if (skb->sk != sk) { /* A pending connection */
348 /* Queue the unaccepted socket for death */
349 sock_set_flag(skb->sk, SOCK_DEAD);
350 rose_start_heartbeat(skb->sk);
351 rose_sk(skb->sk)->state = ROSE_STATE_0;
357 if (atomic_read(&sk->sk_wmem_alloc) ||
358 atomic_read(&sk->sk_rmem_alloc)) {
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, 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)
519 struct rose_sock *rose;
521 if (net != &init_net)
522 return -EAFNOSUPPORT;
524 if (sock->type != SOCK_SEQPACKET || protocol != 0)
525 return -ESOCKTNOSUPPORT;
527 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
533 sock_init_data(sock, sk);
535 skb_queue_head_init(&rose->ack_queue);
537 skb_queue_head_init(&rose->frag_queue);
541 sock->ops = &rose_proto_ops;
542 sk->sk_protocol = protocol;
544 init_timer(&rose->timer);
545 init_timer(&rose->idletimer);
547 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
548 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
549 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
550 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
551 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
553 rose->state = ROSE_STATE_0;
558 static struct sock *rose_make_new(struct sock *osk)
561 struct rose_sock *rose, *orose;
563 if (osk->sk_type != SOCK_SEQPACKET)
566 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto);
572 sock_init_data(NULL, sk);
574 skb_queue_head_init(&rose->ack_queue);
576 skb_queue_head_init(&rose->frag_queue);
580 sk->sk_type = osk->sk_type;
581 sk->sk_priority = osk->sk_priority;
582 sk->sk_protocol = osk->sk_protocol;
583 sk->sk_rcvbuf = osk->sk_rcvbuf;
584 sk->sk_sndbuf = osk->sk_sndbuf;
585 sk->sk_state = TCP_ESTABLISHED;
586 sock_copy_flags(sk, osk);
588 init_timer(&rose->timer);
589 init_timer(&rose->idletimer);
591 orose = rose_sk(osk);
592 rose->t1 = orose->t1;
593 rose->t2 = orose->t2;
594 rose->t3 = orose->t3;
595 rose->hb = orose->hb;
596 rose->idle = orose->idle;
597 rose->defer = orose->defer;
598 rose->device = orose->device;
599 rose->qbitincl = orose->qbitincl;
604 static int rose_release(struct socket *sock)
606 struct sock *sk = sock->sk;
607 struct rose_sock *rose;
609 if (sk == NULL) return 0;
616 switch (rose->state) {
619 rose_disconnect(sk, 0, -1, -1);
621 rose_destroy_socket(sk);
625 rose->neighbour->use--;
627 rose_disconnect(sk, 0, -1, -1);
629 rose_destroy_socket(sk);
636 rose_clear_queues(sk);
637 rose_stop_idletimer(sk);
638 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
639 rose_start_t3timer(sk);
640 rose->state = ROSE_STATE_2;
641 sk->sk_state = TCP_CLOSE;
642 sk->sk_shutdown |= SEND_SHUTDOWN;
643 sk->sk_state_change(sk);
644 sock_set_flag(sk, SOCK_DEAD);
645 sock_set_flag(sk, SOCK_DESTROY);
659 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
661 struct sock *sk = sock->sk;
662 struct rose_sock *rose = rose_sk(sk);
663 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
664 struct net_device *dev;
665 ax25_address *source;
666 ax25_uid_assoc *user;
669 if (!sock_flag(sk, SOCK_ZAPPED))
672 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
675 if (addr->srose_family != AF_ROSE)
678 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
681 if (addr->srose_ndigis > ROSE_MAX_DIGIS)
684 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) {
685 SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n");
686 return -EADDRNOTAVAIL;
689 source = &addr->srose_call;
691 user = ax25_findbyuid(current->euid);
693 rose->source_call = user->call;
696 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
698 rose->source_call = *source;
701 rose->source_addr = addr->srose_addr;
703 rose->source_ndigis = addr->srose_ndigis;
705 if (addr_len == sizeof(struct full_sockaddr_rose)) {
706 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
707 for (n = 0 ; n < addr->srose_ndigis ; n++)
708 rose->source_digis[n] = full_addr->srose_digis[n];
710 if (rose->source_ndigis == 1) {
711 rose->source_digis[0] = addr->srose_digi;
715 rose_insert_socket(sk);
717 sock_reset_flag(sk, SOCK_ZAPPED);
718 SOCK_DEBUG(sk, "ROSE: socket is bound\n");
722 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
724 struct sock *sk = sock->sk;
725 struct rose_sock *rose = rose_sk(sk);
726 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
727 unsigned char cause, diagnostic;
728 struct net_device *dev;
729 ax25_uid_assoc *user;
732 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
735 if (addr->srose_family != AF_ROSE)
738 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
741 if (addr->srose_ndigis > ROSE_MAX_DIGIS)
744 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
745 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
750 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
751 /* Connect completed during a ERESTARTSYS event */
752 sock->state = SS_CONNECTED;
756 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
757 sock->state = SS_UNCONNECTED;
762 if (sk->sk_state == TCP_ESTABLISHED) {
763 /* No reconnect on a seqpacket socket */
768 sk->sk_state = TCP_CLOSE;
769 sock->state = SS_UNCONNECTED;
771 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
773 if (!rose->neighbour) {
778 rose->lci = rose_new_lci(rose->neighbour);
784 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
785 sock_reset_flag(sk, SOCK_ZAPPED);
787 if ((dev = rose_dev_first()) == NULL) {
792 user = ax25_findbyuid(current->euid);
798 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
799 rose->source_call = user->call;
803 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->sk_sleep, &wait,
849 if (sk->sk_state != TCP_SYN_SENT)
851 if (!signal_pending(current)) {
860 finish_wait(sk->sk_sleep, &wait);
866 if (sk->sk_state != TCP_ESTABLISHED) {
867 /* Try next neighbour */
868 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, &diagnostic, 0);
870 goto rose_try_next_neigh;
872 /* No more neighbours */
873 sock->state = SS_UNCONNECTED;
874 err = sock_error(sk); /* Always set at this point */
878 sock->state = SS_CONNECTED;
886 static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
894 if ((sk = sock->sk) == NULL)
898 if (sk->sk_type != SOCK_SEQPACKET) {
903 if (sk->sk_state != TCP_LISTEN) {
909 * The write queue this time is holding sockets ready to use
910 * hooked into the SABM we saved
913 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
915 skb = skb_dequeue(&sk->sk_receive_queue);
919 if (flags & O_NONBLOCK) {
923 if (!signal_pending(current)) {
932 finish_wait(sk->sk_sleep, &wait);
937 sock_graft(newsk, newsock);
939 /* Now attach up the new socket */
942 sk->sk_ack_backlog--;
950 static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
951 int *uaddr_len, int peer)
953 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
954 struct sock *sk = sock->sk;
955 struct rose_sock *rose = rose_sk(sk);
959 if (sk->sk_state != TCP_ESTABLISHED)
961 srose->srose_family = AF_ROSE;
962 srose->srose_addr = rose->dest_addr;
963 srose->srose_call = rose->dest_call;
964 srose->srose_ndigis = rose->dest_ndigis;
965 for (n = 0; n < rose->dest_ndigis; n++)
966 srose->srose_digis[n] = rose->dest_digis[n];
968 srose->srose_family = AF_ROSE;
969 srose->srose_addr = rose->source_addr;
970 srose->srose_call = rose->source_call;
971 srose->srose_ndigis = rose->source_ndigis;
972 for (n = 0; n < rose->source_ndigis; n++)
973 srose->srose_digis[n] = rose->source_digis[n];
976 *uaddr_len = sizeof(struct full_sockaddr_rose);
980 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
984 struct rose_sock *make_rose;
985 struct rose_facilities_struct facilities;
988 skb->sk = NULL; /* Initially we don't know who it's for */
991 * skb->data points to the rose frame start
993 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
995 len = (((skb->data[3] >> 4) & 0x0F) + 1) >> 1;
996 len += (((skb->data[3] >> 0) & 0x0F) + 1) >> 1;
997 if (!rose_parse_facilities(skb->data + len + 4, &facilities)) {
998 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
1002 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
1005 * We can't accept the Call Request.
1007 if (sk == NULL || sk_acceptq_is_full(sk) ||
1008 (make = rose_make_new(sk)) == NULL) {
1009 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
1014 make->sk_state = TCP_ESTABLISHED;
1015 make_rose = rose_sk(make);
1017 make_rose->lci = lci;
1018 make_rose->dest_addr = facilities.dest_addr;
1019 make_rose->dest_call = facilities.dest_call;
1020 make_rose->dest_ndigis = facilities.dest_ndigis;
1021 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1022 make_rose->dest_digis[n] = facilities.dest_digis[n];
1023 make_rose->source_addr = facilities.source_addr;
1024 make_rose->source_call = facilities.source_call;
1025 make_rose->source_ndigis = facilities.source_ndigis;
1026 for (n = 0 ; n < facilities.source_ndigis ; n++)
1027 make_rose->source_digis[n]= facilities.source_digis[n];
1028 make_rose->neighbour = neigh;
1029 make_rose->device = dev;
1030 make_rose->facilities = facilities;
1032 make_rose->neighbour->use++;
1034 if (rose_sk(sk)->defer) {
1035 make_rose->state = ROSE_STATE_5;
1037 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1038 make_rose->state = ROSE_STATE_3;
1039 rose_start_idletimer(make);
1042 make_rose->condition = 0x00;
1047 sk->sk_ack_backlog++;
1049 rose_insert_socket(make);
1051 skb_queue_head(&sk->sk_receive_queue, skb);
1053 rose_start_heartbeat(make);
1055 if (!sock_flag(sk, SOCK_DEAD))
1056 sk->sk_data_ready(sk, skb->len);
1061 static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1062 struct msghdr *msg, size_t len)
1064 struct sock *sk = sock->sk;
1065 struct rose_sock *rose = rose_sk(sk);
1066 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1068 struct full_sockaddr_rose srose;
1069 struct sk_buff *skb;
1070 unsigned char *asmptr;
1071 int n, size, qbit = 0;
1073 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1076 if (sock_flag(sk, SOCK_ZAPPED))
1077 return -EADDRNOTAVAIL;
1079 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1080 send_sig(SIGPIPE, current, 0);
1084 if (rose->neighbour == NULL || rose->device == NULL)
1085 return -ENETUNREACH;
1087 if (usrose != NULL) {
1088 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1090 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1091 memcpy(&srose, usrose, msg->msg_namelen);
1092 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1093 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1095 if (srose.srose_ndigis != rose->dest_ndigis)
1097 if (srose.srose_ndigis == rose->dest_ndigis) {
1098 for (n = 0 ; n < srose.srose_ndigis ; n++)
1099 if (ax25cmp(&rose->dest_digis[n],
1100 &srose.srose_digis[n]))
1103 if (srose.srose_family != AF_ROSE)
1106 if (sk->sk_state != TCP_ESTABLISHED)
1109 srose.srose_family = AF_ROSE;
1110 srose.srose_addr = rose->dest_addr;
1111 srose.srose_call = rose->dest_call;
1112 srose.srose_ndigis = rose->dest_ndigis;
1113 for (n = 0 ; n < rose->dest_ndigis ; n++)
1114 srose.srose_digis[n] = rose->dest_digis[n];
1117 SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n");
1119 /* Build a packet */
1120 SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n");
1121 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1123 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1126 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1129 * Put the data on the end
1131 SOCK_DEBUG(sk, "ROSE: Appending user data\n");
1133 skb_reset_transport_header(skb);
1136 err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1143 * If the Q BIT Include socket option is in force, the first
1144 * byte of the user data is the logical value of the Q Bit.
1146 if (rose->qbitincl) {
1147 qbit = skb->data[0];
1152 * Push down the ROSE header
1154 asmptr = skb_push(skb, ROSE_MIN_LEN);
1156 SOCK_DEBUG(sk, "ROSE: Building Network Header.\n");
1158 /* Build a ROSE Network header */
1159 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1160 asmptr[1] = (rose->lci >> 0) & 0xFF;
1161 asmptr[2] = ROSE_DATA;
1164 asmptr[0] |= ROSE_Q_BIT;
1166 SOCK_DEBUG(sk, "ROSE: Built header.\n");
1168 SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n");
1170 if (sk->sk_state != TCP_ESTABLISHED) {
1176 #define ROSE_PACLEN (256-ROSE_MIN_LEN)
1177 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1178 unsigned char header[ROSE_MIN_LEN];
1179 struct sk_buff *skbn;
1183 /* Save a copy of the Header */
1184 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
1185 skb_pull(skb, ROSE_MIN_LEN);
1187 frontlen = skb_headroom(skb);
1189 while (skb->len > 0) {
1190 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1199 skb_reserve(skbn, frontlen);
1201 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1203 /* Copy the user data */
1204 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
1207 /* Duplicate the Header */
1208 skb_push(skbn, ROSE_MIN_LEN);
1209 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
1212 skbn->data[2] |= M_BIT;
1214 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1220 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1223 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1232 static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1233 struct msghdr *msg, size_t size, int flags)
1235 struct sock *sk = sock->sk;
1236 struct rose_sock *rose = rose_sk(sk);
1237 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1239 unsigned char *asmptr;
1240 struct sk_buff *skb;
1244 * This works for seqpacket too. The receiver has ordered the queue for
1245 * us! We do one quick check first though
1247 if (sk->sk_state != TCP_ESTABLISHED)
1250 /* Now we can treat all alike */
1251 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1254 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1256 skb_pull(skb, ROSE_MIN_LEN);
1258 if (rose->qbitincl) {
1259 asmptr = skb_push(skb, 1);
1263 skb_reset_transport_header(skb);
1266 if (copied > size) {
1268 msg->msg_flags |= MSG_TRUNC;
1271 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1273 if (srose != NULL) {
1274 srose->srose_family = AF_ROSE;
1275 srose->srose_addr = rose->dest_addr;
1276 srose->srose_call = rose->dest_call;
1277 srose->srose_ndigis = rose->dest_ndigis;
1278 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1279 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1280 for (n = 0 ; n < rose->dest_ndigis ; n++)
1281 full_srose->srose_digis[n] = rose->dest_digis[n];
1282 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1284 if (rose->dest_ndigis >= 1) {
1285 srose->srose_ndigis = 1;
1286 srose->srose_digi = rose->dest_digis[0];
1288 msg->msg_namelen = sizeof(struct sockaddr_rose);
1292 skb_free_datagram(sk, skb);
1298 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1300 struct sock *sk = sock->sk;
1301 struct rose_sock *rose = rose_sk(sk);
1302 void __user *argp = (void __user *)arg;
1307 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
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)
1403 struct hlist_node *node;
1405 spin_lock_bh(&rose_list_lock);
1407 return SEQ_START_TOKEN;
1410 sk_for_each(s, node, &rose_list) {
1418 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1422 return (v == SEQ_START_TOKEN) ? sk_head(&rose_list)
1423 : sk_next((struct sock *)v);
1426 static void rose_info_stop(struct seq_file *seq, void *v)
1427 __releases(rose_list_lock)
1429 spin_unlock_bh(&rose_list_lock);
1432 static int rose_info_show(struct seq_file *seq, void *v)
1436 if (v == SEQ_START_TOKEN)
1438 "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");
1442 struct rose_sock *rose = rose_sk(s);
1443 const char *devname, *callsign;
1444 const struct net_device *dev = rose->device;
1449 devname = dev->name;
1451 seq_printf(seq, "%-10s %-9s ",
1452 rose2asc(&rose->dest_addr),
1453 ax2asc(buf, &rose->dest_call));
1455 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1456 callsign = "??????-?";
1458 callsign = ax2asc(buf, &rose->source_call);
1461 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
1462 rose2asc(&rose->source_addr),
1466 (rose->neighbour) ? rose->neighbour->number : 0,
1471 ax25_display_timer(&rose->timer) / HZ,
1476 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1477 rose->idle / (60 * HZ),
1478 atomic_read(&s->sk_wmem_alloc),
1479 atomic_read(&s->sk_rmem_alloc),
1480 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1486 static const struct seq_operations rose_info_seqops = {
1487 .start = rose_info_start,
1488 .next = rose_info_next,
1489 .stop = rose_info_stop,
1490 .show = rose_info_show,
1493 static int rose_info_open(struct inode *inode, struct file *file)
1495 return seq_open(file, &rose_info_seqops);
1498 static const struct file_operations rose_info_fops = {
1499 .owner = THIS_MODULE,
1500 .open = rose_info_open,
1502 .llseek = seq_lseek,
1503 .release = seq_release,
1505 #endif /* CONFIG_PROC_FS */
1507 static struct net_proto_family rose_family_ops = {
1509 .create = rose_create,
1510 .owner = THIS_MODULE,
1513 static struct proto_ops rose_proto_ops = {
1515 .owner = THIS_MODULE,
1516 .release = rose_release,
1518 .connect = rose_connect,
1519 .socketpair = sock_no_socketpair,
1520 .accept = rose_accept,
1521 .getname = rose_getname,
1522 .poll = datagram_poll,
1523 .ioctl = rose_ioctl,
1524 .listen = rose_listen,
1525 .shutdown = sock_no_shutdown,
1526 .setsockopt = rose_setsockopt,
1527 .getsockopt = rose_getsockopt,
1528 .sendmsg = rose_sendmsg,
1529 .recvmsg = rose_recvmsg,
1530 .mmap = sock_no_mmap,
1531 .sendpage = sock_no_sendpage,
1534 static struct notifier_block rose_dev_notifier = {
1535 .notifier_call = rose_device_event,
1538 static struct net_device **dev_rose;
1540 static struct ax25_protocol rose_pid = {
1542 .func = rose_route_frame
1545 static struct ax25_linkfail rose_linkfail_notifier = {
1546 .func = rose_link_failed
1549 static int __init rose_proto_init(void)
1554 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1555 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1560 rc = proto_register(&rose_proto, 0);
1564 rose_callsign = null_ax25_address;
1566 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1567 if (dev_rose == NULL) {
1568 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
1570 goto out_proto_unregister;
1573 for (i = 0; i < rose_ndevs; i++) {
1574 struct net_device *dev;
1575 char name[IFNAMSIZ];
1577 sprintf(name, "rose%d", i);
1578 dev = alloc_netdev(sizeof(struct net_device_stats),
1581 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
1585 rc = register_netdev(dev);
1587 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1591 rose_set_lockdep_key(dev);
1595 sock_register(&rose_family_ops);
1596 register_netdevice_notifier(&rose_dev_notifier);
1598 ax25_register_pid(&rose_pid);
1599 ax25_linkfail_register(&rose_linkfail_notifier);
1601 #ifdef CONFIG_SYSCTL
1602 rose_register_sysctl();
1604 rose_loopback_init();
1606 rose_add_loopback_neigh();
1608 proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops);
1609 proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops);
1610 proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops);
1611 proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops);
1616 unregister_netdev(dev_rose[i]);
1617 free_netdev(dev_rose[i]);
1620 out_proto_unregister:
1621 proto_unregister(&rose_proto);
1624 module_init(rose_proto_init);
1626 module_param(rose_ndevs, int, 0);
1627 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1629 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1630 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1631 MODULE_LICENSE("GPL");
1632 MODULE_ALIAS_NETPROTO(PF_ROSE);
1634 static void __exit rose_exit(void)
1638 proc_net_remove(&init_net, "rose");
1639 proc_net_remove(&init_net, "rose_neigh");
1640 proc_net_remove(&init_net, "rose_nodes");
1641 proc_net_remove(&init_net, "rose_routes");
1642 rose_loopback_clear();
1646 ax25_protocol_release(AX25_P_ROSE);
1647 ax25_linkfail_release(&rose_linkfail_notifier);
1649 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1650 ax25_listen_release(&rose_callsign, NULL);
1652 #ifdef CONFIG_SYSCTL
1653 rose_unregister_sysctl();
1655 unregister_netdevice_notifier(&rose_dev_notifier);
1657 sock_unregister(PF_ROSE);
1659 for (i = 0; i < rose_ndevs; i++) {
1660 struct net_device *dev = dev_rose[i];
1663 unregister_netdev(dev);
1669 proto_unregister(&rose_proto);
1672 module_exit(rose_exit);