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;
77 static struct lock_class_key rose_netdev_addr_lock_key;
79 static void rose_set_lockdep_one(struct net_device *dev,
80 struct netdev_queue *txq,
83 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
86 static void rose_set_lockdep_key(struct net_device *dev)
88 lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key);
89 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
93 * Convert a ROSE address into text.
95 char *rose2asc(char *buf, const rose_address *addr)
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(buf, "%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 (sk_has_allocations(sk)) {
358 /* Defer: outstanding buffers */
359 setup_timer(&sk->sk_timer, rose_destroy_timer,
361 sk->sk_timer.expires = jiffies + 10 * HZ;
362 add_timer(&sk->sk_timer);
368 * Handling for system calls applied via the various interfaces to a
369 * ROSE socket object.
372 static int rose_setsockopt(struct socket *sock, int level, int optname,
373 char __user *optval, int optlen)
375 struct sock *sk = sock->sk;
376 struct rose_sock *rose = rose_sk(sk);
379 if (level != SOL_ROSE)
382 if (optlen < sizeof(int))
385 if (get_user(opt, (int __user *)optval))
390 rose->defer = opt ? 1 : 0;
420 rose->idle = opt * 60 * HZ;
424 rose->qbitincl = opt ? 1 : 0;
432 static int rose_getsockopt(struct socket *sock, int level, int optname,
433 char __user *optval, int __user *optlen)
435 struct sock *sk = sock->sk;
436 struct rose_sock *rose = rose_sk(sk);
440 if (level != SOL_ROSE)
443 if (get_user(len, optlen))
471 val = rose->idle / (60 * HZ);
475 val = rose->qbitincl;
482 len = min_t(unsigned int, len, sizeof(int));
484 if (put_user(len, optlen))
487 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
490 static int rose_listen(struct socket *sock, int backlog)
492 struct sock *sk = sock->sk;
494 if (sk->sk_state != TCP_LISTEN) {
495 struct rose_sock *rose = rose_sk(sk);
497 rose->dest_ndigis = 0;
498 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
499 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
500 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
501 sk->sk_max_ack_backlog = backlog;
502 sk->sk_state = TCP_LISTEN;
509 static struct proto rose_proto = {
511 .owner = THIS_MODULE,
512 .obj_size = sizeof(struct rose_sock),
515 static int rose_create(struct net *net, struct socket *sock, int protocol)
518 struct rose_sock *rose;
520 if (net != &init_net)
521 return -EAFNOSUPPORT;
523 if (sock->type != SOCK_SEQPACKET || protocol != 0)
524 return -ESOCKTNOSUPPORT;
526 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
532 sock_init_data(sock, sk);
534 skb_queue_head_init(&rose->ack_queue);
536 skb_queue_head_init(&rose->frag_queue);
540 sock->ops = &rose_proto_ops;
541 sk->sk_protocol = protocol;
543 init_timer(&rose->timer);
544 init_timer(&rose->idletimer);
546 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
547 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
548 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
549 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
550 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
552 rose->state = ROSE_STATE_0;
557 static struct sock *rose_make_new(struct sock *osk)
560 struct rose_sock *rose, *orose;
562 if (osk->sk_type != SOCK_SEQPACKET)
565 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto);
571 sock_init_data(NULL, sk);
573 skb_queue_head_init(&rose->ack_queue);
575 skb_queue_head_init(&rose->frag_queue);
579 sk->sk_type = osk->sk_type;
580 sk->sk_priority = osk->sk_priority;
581 sk->sk_protocol = osk->sk_protocol;
582 sk->sk_rcvbuf = osk->sk_rcvbuf;
583 sk->sk_sndbuf = osk->sk_sndbuf;
584 sk->sk_state = TCP_ESTABLISHED;
585 sock_copy_flags(sk, osk);
587 init_timer(&rose->timer);
588 init_timer(&rose->idletimer);
590 orose = rose_sk(osk);
591 rose->t1 = orose->t1;
592 rose->t2 = orose->t2;
593 rose->t3 = orose->t3;
594 rose->hb = orose->hb;
595 rose->idle = orose->idle;
596 rose->defer = orose->defer;
597 rose->device = orose->device;
598 rose->qbitincl = orose->qbitincl;
603 static int rose_release(struct socket *sock)
605 struct sock *sk = sock->sk;
606 struct rose_sock *rose;
608 if (sk == NULL) return 0;
615 switch (rose->state) {
618 rose_disconnect(sk, 0, -1, -1);
620 rose_destroy_socket(sk);
624 rose->neighbour->use--;
626 rose_disconnect(sk, 0, -1, -1);
628 rose_destroy_socket(sk);
635 rose_clear_queues(sk);
636 rose_stop_idletimer(sk);
637 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
638 rose_start_t3timer(sk);
639 rose->state = ROSE_STATE_2;
640 sk->sk_state = TCP_CLOSE;
641 sk->sk_shutdown |= SEND_SHUTDOWN;
642 sk->sk_state_change(sk);
643 sock_set_flag(sk, SOCK_DEAD);
644 sock_set_flag(sk, SOCK_DESTROY);
658 static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
660 struct sock *sk = sock->sk;
661 struct rose_sock *rose = rose_sk(sk);
662 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
663 struct net_device *dev;
664 ax25_address *source;
665 ax25_uid_assoc *user;
668 if (!sock_flag(sk, SOCK_ZAPPED))
671 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
674 if (addr->srose_family != AF_ROSE)
677 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
680 if (addr->srose_ndigis > ROSE_MAX_DIGIS)
683 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) {
684 SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n");
685 return -EADDRNOTAVAIL;
688 source = &addr->srose_call;
690 user = ax25_findbyuid(current_euid());
692 rose->source_call = user->call;
695 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
697 rose->source_call = *source;
700 rose->source_addr = addr->srose_addr;
702 rose->source_ndigis = addr->srose_ndigis;
704 if (addr_len == sizeof(struct full_sockaddr_rose)) {
705 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
706 for (n = 0 ; n < addr->srose_ndigis ; n++)
707 rose->source_digis[n] = full_addr->srose_digis[n];
709 if (rose->source_ndigis == 1) {
710 rose->source_digis[0] = addr->srose_digi;
714 rose_insert_socket(sk);
716 sock_reset_flag(sk, SOCK_ZAPPED);
717 SOCK_DEBUG(sk, "ROSE: socket is bound\n");
721 static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
723 struct sock *sk = sock->sk;
724 struct rose_sock *rose = rose_sk(sk);
725 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
726 unsigned char cause, diagnostic;
727 struct net_device *dev;
728 ax25_uid_assoc *user;
731 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
734 if (addr->srose_family != AF_ROSE)
737 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
740 if (addr->srose_ndigis > ROSE_MAX_DIGIS)
743 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
744 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
749 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
750 /* Connect completed during a ERESTARTSYS event */
751 sock->state = SS_CONNECTED;
755 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
756 sock->state = SS_UNCONNECTED;
761 if (sk->sk_state == TCP_ESTABLISHED) {
762 /* No reconnect on a seqpacket socket */
767 sk->sk_state = TCP_CLOSE;
768 sock->state = SS_UNCONNECTED;
770 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
772 if (!rose->neighbour) {
777 rose->lci = rose_new_lci(rose->neighbour);
783 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
784 sock_reset_flag(sk, SOCK_ZAPPED);
786 if ((dev = rose_dev_first()) == NULL) {
791 user = ax25_findbyuid(current_euid());
797 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
798 rose->source_call = user->call;
802 rose_insert_socket(sk); /* Finish the bind */
805 rose->dest_addr = addr->srose_addr;
806 rose->dest_call = addr->srose_call;
807 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
808 rose->dest_ndigis = addr->srose_ndigis;
810 if (addr_len == sizeof(struct full_sockaddr_rose)) {
811 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
812 for (n = 0 ; n < addr->srose_ndigis ; n++)
813 rose->dest_digis[n] = full_addr->srose_digis[n];
815 if (rose->dest_ndigis == 1) {
816 rose->dest_digis[0] = addr->srose_digi;
820 /* Move to connecting socket, start sending Connect Requests */
821 sock->state = SS_CONNECTING;
822 sk->sk_state = TCP_SYN_SENT;
824 rose->state = ROSE_STATE_1;
826 rose->neighbour->use++;
828 rose_write_internal(sk, ROSE_CALL_REQUEST);
829 rose_start_heartbeat(sk);
830 rose_start_t1timer(sk);
833 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
839 * A Connect Ack with Choke or timeout or failed routing will go to
842 if (sk->sk_state == TCP_SYN_SENT) {
846 prepare_to_wait(sk->sk_sleep, &wait,
848 if (sk->sk_state != TCP_SYN_SENT)
850 if (!signal_pending(current)) {
859 finish_wait(sk->sk_sleep, &wait);
865 if (sk->sk_state != TCP_ESTABLISHED) {
866 /* Try next neighbour */
867 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, &diagnostic, 0);
869 goto rose_try_next_neigh;
871 /* No more neighbours */
872 sock->state = SS_UNCONNECTED;
873 err = sock_error(sk); /* Always set at this point */
877 sock->state = SS_CONNECTED;
885 static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
893 if ((sk = sock->sk) == NULL)
897 if (sk->sk_type != SOCK_SEQPACKET) {
902 if (sk->sk_state != TCP_LISTEN) {
908 * The write queue this time is holding sockets ready to use
909 * hooked into the SABM we saved
912 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
914 skb = skb_dequeue(&sk->sk_receive_queue);
918 if (flags & O_NONBLOCK) {
922 if (!signal_pending(current)) {
931 finish_wait(sk->sk_sleep, &wait);
936 sock_graft(newsk, newsock);
938 /* Now attach up the new socket */
941 sk->sk_ack_backlog--;
949 static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
950 int *uaddr_len, int peer)
952 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
953 struct sock *sk = sock->sk;
954 struct rose_sock *rose = rose_sk(sk);
958 if (sk->sk_state != TCP_ESTABLISHED)
960 srose->srose_family = AF_ROSE;
961 srose->srose_addr = rose->dest_addr;
962 srose->srose_call = rose->dest_call;
963 srose->srose_ndigis = rose->dest_ndigis;
964 for (n = 0; n < rose->dest_ndigis; n++)
965 srose->srose_digis[n] = rose->dest_digis[n];
967 srose->srose_family = AF_ROSE;
968 srose->srose_addr = rose->source_addr;
969 srose->srose_call = rose->source_call;
970 srose->srose_ndigis = rose->source_ndigis;
971 for (n = 0; n < rose->source_ndigis; n++)
972 srose->srose_digis[n] = rose->source_digis[n];
975 *uaddr_len = sizeof(struct full_sockaddr_rose);
979 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
983 struct rose_sock *make_rose;
984 struct rose_facilities_struct facilities;
987 skb->sk = NULL; /* Initially we don't know who it's for */
990 * skb->data points to the rose frame start
992 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
994 len = (((skb->data[3] >> 4) & 0x0F) + 1) >> 1;
995 len += (((skb->data[3] >> 0) & 0x0F) + 1) >> 1;
996 if (!rose_parse_facilities(skb->data + len + 4, &facilities)) {
997 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
1001 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
1004 * We can't accept the Call Request.
1006 if (sk == NULL || sk_acceptq_is_full(sk) ||
1007 (make = rose_make_new(sk)) == NULL) {
1008 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
1013 make->sk_state = TCP_ESTABLISHED;
1014 make_rose = rose_sk(make);
1016 make_rose->lci = lci;
1017 make_rose->dest_addr = facilities.dest_addr;
1018 make_rose->dest_call = facilities.dest_call;
1019 make_rose->dest_ndigis = facilities.dest_ndigis;
1020 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1021 make_rose->dest_digis[n] = facilities.dest_digis[n];
1022 make_rose->source_addr = facilities.source_addr;
1023 make_rose->source_call = facilities.source_call;
1024 make_rose->source_ndigis = facilities.source_ndigis;
1025 for (n = 0 ; n < facilities.source_ndigis ; n++)
1026 make_rose->source_digis[n]= facilities.source_digis[n];
1027 make_rose->neighbour = neigh;
1028 make_rose->device = dev;
1029 make_rose->facilities = facilities;
1031 make_rose->neighbour->use++;
1033 if (rose_sk(sk)->defer) {
1034 make_rose->state = ROSE_STATE_5;
1036 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1037 make_rose->state = ROSE_STATE_3;
1038 rose_start_idletimer(make);
1041 make_rose->condition = 0x00;
1046 sk->sk_ack_backlog++;
1048 rose_insert_socket(make);
1050 skb_queue_head(&sk->sk_receive_queue, skb);
1052 rose_start_heartbeat(make);
1054 if (!sock_flag(sk, SOCK_DEAD))
1055 sk->sk_data_ready(sk, skb->len);
1060 static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1061 struct msghdr *msg, size_t len)
1063 struct sock *sk = sock->sk;
1064 struct rose_sock *rose = rose_sk(sk);
1065 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1067 struct full_sockaddr_rose srose;
1068 struct sk_buff *skb;
1069 unsigned char *asmptr;
1070 int n, size, qbit = 0;
1072 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1075 if (sock_flag(sk, SOCK_ZAPPED))
1076 return -EADDRNOTAVAIL;
1078 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1079 send_sig(SIGPIPE, current, 0);
1083 if (rose->neighbour == NULL || rose->device == NULL)
1084 return -ENETUNREACH;
1086 if (usrose != NULL) {
1087 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1089 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1090 memcpy(&srose, usrose, msg->msg_namelen);
1091 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1092 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1094 if (srose.srose_ndigis != rose->dest_ndigis)
1096 if (srose.srose_ndigis == rose->dest_ndigis) {
1097 for (n = 0 ; n < srose.srose_ndigis ; n++)
1098 if (ax25cmp(&rose->dest_digis[n],
1099 &srose.srose_digis[n]))
1102 if (srose.srose_family != AF_ROSE)
1105 if (sk->sk_state != TCP_ESTABLISHED)
1108 srose.srose_family = AF_ROSE;
1109 srose.srose_addr = rose->dest_addr;
1110 srose.srose_call = rose->dest_call;
1111 srose.srose_ndigis = rose->dest_ndigis;
1112 for (n = 0 ; n < rose->dest_ndigis ; n++)
1113 srose.srose_digis[n] = rose->dest_digis[n];
1116 SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n");
1118 /* Build a packet */
1119 SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n");
1120 /* Sanity check the packet size */
1124 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1126 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1129 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1132 * Put the data on the end
1134 SOCK_DEBUG(sk, "ROSE: Appending user data\n");
1136 skb_reset_transport_header(skb);
1139 err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
1146 * If the Q BIT Include socket option is in force, the first
1147 * byte of the user data is the logical value of the Q Bit.
1149 if (rose->qbitincl) {
1150 qbit = skb->data[0];
1155 * Push down the ROSE header
1157 asmptr = skb_push(skb, ROSE_MIN_LEN);
1159 SOCK_DEBUG(sk, "ROSE: Building Network Header.\n");
1161 /* Build a ROSE Network header */
1162 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1163 asmptr[1] = (rose->lci >> 0) & 0xFF;
1164 asmptr[2] = ROSE_DATA;
1167 asmptr[0] |= ROSE_Q_BIT;
1169 SOCK_DEBUG(sk, "ROSE: Built header.\n");
1171 SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n");
1173 if (sk->sk_state != TCP_ESTABLISHED) {
1179 #define ROSE_PACLEN (256-ROSE_MIN_LEN)
1180 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1181 unsigned char header[ROSE_MIN_LEN];
1182 struct sk_buff *skbn;
1186 /* Save a copy of the Header */
1187 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
1188 skb_pull(skb, ROSE_MIN_LEN);
1190 frontlen = skb_headroom(skb);
1192 while (skb->len > 0) {
1193 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1202 skb_reserve(skbn, frontlen);
1204 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1206 /* Copy the user data */
1207 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
1210 /* Duplicate the Header */
1211 skb_push(skbn, ROSE_MIN_LEN);
1212 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
1215 skbn->data[2] |= M_BIT;
1217 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1223 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1226 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1235 static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1236 struct msghdr *msg, size_t size, int flags)
1238 struct sock *sk = sock->sk;
1239 struct rose_sock *rose = rose_sk(sk);
1240 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1242 unsigned char *asmptr;
1243 struct sk_buff *skb;
1247 * This works for seqpacket too. The receiver has ordered the queue for
1248 * us! We do one quick check first though
1250 if (sk->sk_state != TCP_ESTABLISHED)
1253 /* Now we can treat all alike */
1254 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1257 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1259 skb_pull(skb, ROSE_MIN_LEN);
1261 if (rose->qbitincl) {
1262 asmptr = skb_push(skb, 1);
1266 skb_reset_transport_header(skb);
1269 if (copied > size) {
1271 msg->msg_flags |= MSG_TRUNC;
1274 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1276 if (srose != NULL) {
1277 srose->srose_family = AF_ROSE;
1278 srose->srose_addr = rose->dest_addr;
1279 srose->srose_call = rose->dest_call;
1280 srose->srose_ndigis = rose->dest_ndigis;
1281 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1282 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1283 for (n = 0 ; n < rose->dest_ndigis ; n++)
1284 full_srose->srose_digis[n] = rose->dest_digis[n];
1285 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1287 if (rose->dest_ndigis >= 1) {
1288 srose->srose_ndigis = 1;
1289 srose->srose_digi = rose->dest_digis[0];
1291 msg->msg_namelen = sizeof(struct sockaddr_rose);
1295 skb_free_datagram(sk, skb);
1301 static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1303 struct sock *sk = sock->sk;
1304 struct rose_sock *rose = rose_sk(sk);
1305 void __user *argp = (void __user *)arg;
1311 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
1314 return put_user(amount, (unsigned int __user *) argp);
1318 struct sk_buff *skb;
1320 /* These two are safe on a single CPU system as only user tasks fiddle here */
1321 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1323 return put_user(amount, (unsigned int __user *) argp);
1327 return sock_get_timestamp(sk, (struct timeval __user *) argp);
1330 return sock_get_timestampns(sk, (struct timespec __user *) argp);
1334 case SIOCGIFDSTADDR:
1335 case SIOCSIFDSTADDR:
1336 case SIOCGIFBRDADDR:
1337 case SIOCSIFBRDADDR:
1338 case SIOCGIFNETMASK:
1339 case SIOCSIFNETMASK:
1347 if (!capable(CAP_NET_ADMIN))
1349 return rose_rt_ioctl(cmd, argp);
1351 case SIOCRSGCAUSE: {
1352 struct rose_cause_struct rose_cause;
1353 rose_cause.cause = rose->cause;
1354 rose_cause.diagnostic = rose->diagnostic;
1355 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1358 case SIOCRSSCAUSE: {
1359 struct rose_cause_struct rose_cause;
1360 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1362 rose->cause = rose_cause.cause;
1363 rose->diagnostic = rose_cause.diagnostic;
1368 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1369 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1370 ax25_listen_release(&rose_callsign, NULL);
1371 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1373 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1374 return ax25_listen_register(&rose_callsign, NULL);
1379 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1382 if (rose->state == ROSE_STATE_5) {
1383 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1384 rose_start_idletimer(sk);
1385 rose->condition = 0x00;
1390 rose->state = ROSE_STATE_3;
1395 return -ENOIOCTLCMD;
1401 #ifdef CONFIG_PROC_FS
1402 static void *rose_info_start(struct seq_file *seq, loff_t *pos)
1403 __acquires(rose_list_lock)
1407 struct hlist_node *node;
1409 spin_lock_bh(&rose_list_lock);
1411 return SEQ_START_TOKEN;
1414 sk_for_each(s, node, &rose_list) {
1422 static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1426 return (v == SEQ_START_TOKEN) ? sk_head(&rose_list)
1427 : sk_next((struct sock *)v);
1430 static void rose_info_stop(struct seq_file *seq, void *v)
1431 __releases(rose_list_lock)
1433 spin_unlock_bh(&rose_list_lock);
1436 static int rose_info_show(struct seq_file *seq, void *v)
1438 char buf[11], rsbuf[11];
1440 if (v == SEQ_START_TOKEN)
1442 "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");
1446 struct rose_sock *rose = rose_sk(s);
1447 const char *devname, *callsign;
1448 const struct net_device *dev = rose->device;
1453 devname = dev->name;
1455 seq_printf(seq, "%-10s %-9s ",
1456 rose2asc(rsbuf, &rose->dest_addr),
1457 ax2asc(buf, &rose->dest_call));
1459 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1460 callsign = "??????-?";
1462 callsign = ax2asc(buf, &rose->source_call);
1465 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
1466 rose2asc(rsbuf, &rose->source_addr),
1470 (rose->neighbour) ? rose->neighbour->number : 0,
1475 ax25_display_timer(&rose->timer) / HZ,
1480 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1481 rose->idle / (60 * HZ),
1482 sk_wmem_alloc_get(s),
1483 sk_rmem_alloc_get(s),
1484 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1490 static const struct seq_operations rose_info_seqops = {
1491 .start = rose_info_start,
1492 .next = rose_info_next,
1493 .stop = rose_info_stop,
1494 .show = rose_info_show,
1497 static int rose_info_open(struct inode *inode, struct file *file)
1499 return seq_open(file, &rose_info_seqops);
1502 static const struct file_operations rose_info_fops = {
1503 .owner = THIS_MODULE,
1504 .open = rose_info_open,
1506 .llseek = seq_lseek,
1507 .release = seq_release,
1509 #endif /* CONFIG_PROC_FS */
1511 static struct net_proto_family rose_family_ops = {
1513 .create = rose_create,
1514 .owner = THIS_MODULE,
1517 static struct proto_ops rose_proto_ops = {
1519 .owner = THIS_MODULE,
1520 .release = rose_release,
1522 .connect = rose_connect,
1523 .socketpair = sock_no_socketpair,
1524 .accept = rose_accept,
1525 .getname = rose_getname,
1526 .poll = datagram_poll,
1527 .ioctl = rose_ioctl,
1528 .listen = rose_listen,
1529 .shutdown = sock_no_shutdown,
1530 .setsockopt = rose_setsockopt,
1531 .getsockopt = rose_getsockopt,
1532 .sendmsg = rose_sendmsg,
1533 .recvmsg = rose_recvmsg,
1534 .mmap = sock_no_mmap,
1535 .sendpage = sock_no_sendpage,
1538 static struct notifier_block rose_dev_notifier = {
1539 .notifier_call = rose_device_event,
1542 static struct net_device **dev_rose;
1544 static struct ax25_protocol rose_pid = {
1546 .func = rose_route_frame
1549 static struct ax25_linkfail rose_linkfail_notifier = {
1550 .func = rose_link_failed
1553 static int __init rose_proto_init(void)
1558 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1559 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1564 rc = proto_register(&rose_proto, 0);
1568 rose_callsign = null_ax25_address;
1570 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
1571 if (dev_rose == NULL) {
1572 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
1574 goto out_proto_unregister;
1577 for (i = 0; i < rose_ndevs; i++) {
1578 struct net_device *dev;
1579 char name[IFNAMSIZ];
1581 sprintf(name, "rose%d", i);
1582 dev = alloc_netdev(0, name, rose_setup);
1584 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
1588 rc = register_netdev(dev);
1590 printk(KERN_ERR "ROSE: netdevice registration failed\n");
1594 rose_set_lockdep_key(dev);
1598 sock_register(&rose_family_ops);
1599 register_netdevice_notifier(&rose_dev_notifier);
1601 ax25_register_pid(&rose_pid);
1602 ax25_linkfail_register(&rose_linkfail_notifier);
1604 #ifdef CONFIG_SYSCTL
1605 rose_register_sysctl();
1607 rose_loopback_init();
1609 rose_add_loopback_neigh();
1611 proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops);
1612 proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops);
1613 proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops);
1614 proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops);
1619 unregister_netdev(dev_rose[i]);
1620 free_netdev(dev_rose[i]);
1623 out_proto_unregister:
1624 proto_unregister(&rose_proto);
1627 module_init(rose_proto_init);
1629 module_param(rose_ndevs, int, 0);
1630 MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1632 MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1633 MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1634 MODULE_LICENSE("GPL");
1635 MODULE_ALIAS_NETPROTO(PF_ROSE);
1637 static void __exit rose_exit(void)
1641 proc_net_remove(&init_net, "rose");
1642 proc_net_remove(&init_net, "rose_neigh");
1643 proc_net_remove(&init_net, "rose_nodes");
1644 proc_net_remove(&init_net, "rose_routes");
1645 rose_loopback_clear();
1649 ax25_protocol_release(AX25_P_ROSE);
1650 ax25_linkfail_release(&rose_linkfail_notifier);
1652 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1653 ax25_listen_release(&rose_callsign, NULL);
1655 #ifdef CONFIG_SYSCTL
1656 rose_unregister_sysctl();
1658 unregister_netdevice_notifier(&rose_dev_notifier);
1660 sock_unregister(PF_ROSE);
1662 for (i = 0; i < rose_ndevs; i++) {
1663 struct net_device *dev = dev_rose[i];
1666 unregister_netdev(dev);
1672 proto_unregister(&rose_proto);
1675 module_exit(rose_exit);