patch-2.1.9 linux/net/rose/af_rose.c

• Lines: 1446
• Date: Sun Nov 10 19:12:58 1996
• Orig file: v2.1.8/linux/net/rose/af_rose.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.8/linux/net/rose/af_rose.c linux/net/rose/af_rose.c
@@ -0,0 +1,1445 @@
+/*
+ *	Rose release 001
+ *
+ *	This is ALPHA test software. This code may break your machine, randomly fail to work with new 
+ *	releases, misbehave and/or generally screw up. It might even work. 
+ *
+ *	This code REQUIRES 2.1.0 or higher/ NET3.029
+ *
+ *	This module:
+ *		This module is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ *	History
+ *	Rose 001	Jonathan(G4KLX)	Cloned from af_netrom.c.
+ */
+  
+#include <linux/config.h>
+#if defined(CONFIG_ROSE) || defined(CONFIG_ROSE_MODULE)
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/sockios.h>
+#include <linux/net.h>
+#include <linux/stat.h>
+#include <net/ax25.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <asm/segment.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <linux/fcntl.h>
+#include <linux/termios.h>	/* For TIOCINQ/OUTQ */
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/notifier.h>
+#include <net/rose.h>
+#include <linux/proc_fs.h>
+#include <net/ip.h>
+#include <net/arp.h>
+#include <linux/if_arp.h>
+
+int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
+int sysctl_rose_call_request_timeout    = ROSE_DEFAULT_T1;
+int sysctl_rose_reset_request_timeout   = ROSE_DEFAULT_T2;
+int sysctl_rose_clear_request_timeout   = ROSE_DEFAULT_T3;
+int sysctl_rose_no_activity_timeout     = ROSE_DEFAULT_IDLE;
+int sysctl_rose_routing_control         = 1;
+
+static unsigned int lci = 1;
+
+static struct sock *volatile rose_list = NULL;
+
+/*
+ *	Convert a Rose address into text.
+ */
+char *rose2asc(rose_address *addr)
+{
+	static char buffer[11];
+
+	if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
+	    addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
+	    addr->rose_addr[4] == 0x00) {
+		strcpy(buffer, "*");
+	} else {
+		sprintf(buffer, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
+						addr->rose_addr[1] & 0xFF,
+						addr->rose_addr[2] & 0xFF,
+						addr->rose_addr[3] & 0xFF,
+						addr->rose_addr[4] & 0xFF);
+	}
+
+	return buffer;
+}
+
+/*
+ *	Compare two Rose addresses, 0 == equal.
+ */
+int rosecmp(rose_address *addr1, rose_address *addr2)
+{
+	int i;
+
+	for (i = 0; i < 5; i++)
+		if (addr1->rose_addr[i] != addr2->rose_addr[i])
+			return 1;
+			
+	return 0;
+}
+
+/*
+ *	Socket removal during an interrupt is now safe.
+ */
+static void rose_remove_socket(struct sock *sk)
+{
+	struct sock *s;
+	unsigned long flags;
+	
+	save_flags(flags);
+	cli();
+
+	if ((s = rose_list) == sk) {
+		rose_list = s->next;
+		restore_flags(flags);
+		return;
+	}
+
+	while (s != NULL && s->next != NULL) {
+		if (s->next == sk) {
+			s->next = sk->next;
+			restore_flags(flags);
+			return;
+		}
+
+		s = s->next;
+	}
+
+	restore_flags(flags);
+}
+
+/*
+ *	Kill all bound sockets on a dropped device.
+ */
+static void rose_kill_by_device(struct device *dev)
+{
+	struct sock *s;
+	
+	for (s = rose_list; s != NULL; s = s->next) {
+		if (s->protinfo.rose->device == dev) {
+			s->protinfo.rose->state  = ROSE_STATE_0;
+			s->protinfo.rose->device = NULL;
+			s->state                 = TCP_CLOSE;
+			s->err                   = ENETUNREACH;
+			s->state_change(s);
+			s->dead                  = 1;
+		}
+	}
+}
+
+/*
+ *	Handle device status changes.
+ */
+static int rose_device_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+	struct device *dev = (struct device *)ptr;
+
+	if (event != NETDEV_DOWN)
+		return NOTIFY_DONE;
+		
+	rose_kill_by_device(dev);
+	rose_rt_device_down(dev);
+	rose_link_device_down(dev);
+	
+	return NOTIFY_DONE;
+}
+
+/*
+ *	Add a socket to the bound sockets list.
+ */
+static void rose_insert_socket(struct sock *sk)
+{
+	unsigned long flags;
+
+	save_flags(flags);
+	cli();
+
+	sk->next = rose_list;
+	rose_list  = sk;
+
+	restore_flags(flags);
+}
+
+/*
+ *	Find a socket that wants to accept the Call Request we just
+ *	received.
+ */
+static struct sock *rose_find_listener(ax25_address *call)
+{
+	unsigned long flags;
+	struct sock *s;
+
+	save_flags(flags);
+	cli();
+
+	for (s = rose_list; s != NULL; s = s->next) {
+		if (ax25cmp(&s->protinfo.rose->source_call, call) == 0 && s->protinfo.rose->source_ndigis == 0 && s->state == TCP_LISTEN) {
+			restore_flags(flags);
+			return s;
+		}
+	}
+
+	for (s = rose_list; s != NULL; s = s->next) {
+		if (ax25cmp(&s->protinfo.rose->source_call, &null_ax25_address) == 0 && s->state == TCP_LISTEN) {
+			restore_flags(flags);
+			return s;
+		}
+	}
+
+	restore_flags(flags);
+	return NULL;
+}
+
+/*
+ *	Find a connected Rose socket given my LCI and device.
+ */
+struct sock *rose_find_socket(unsigned int lci, struct device *dev)
+{
+	struct sock *s;
+	unsigned long flags;
+
+	save_flags(flags);
+	cli();
+
+	for (s = rose_list; s != NULL; s = s->next) {
+		if (s->protinfo.rose->lci == lci && s->protinfo.rose->neighbour->dev == dev) {
+			restore_flags(flags);
+			return s;
+		}
+	}
+
+	restore_flags(flags);
+
+	return NULL;
+}
+
+/*
+ *	Find a unique LCI for a given device.
+ */
+unsigned int rose_new_lci(struct device *dev)
+{
+	lci++;
+	if (lci > 4095) lci = 1;
+
+	while (rose_find_socket(lci, dev) != NULL) {
+		lci++;
+		if (lci > 4095) lci = 1;
+	}
+
+	return lci;
+}
+
+/*
+ *	Deferred destroy.
+ */
+void rose_destroy_socket(struct sock *);
+
+/*
+ *	Handler for deferred kills.
+ */
+static void rose_destroy_timer(unsigned long data)
+{
+	rose_destroy_socket((struct sock *)data);
+}
+
+/*
+ *	This is called from user mode and the timers. Thus it protects itself against
+ *	interrupt users but doesn't worry about being called during work.
+ *	Once it is removed from the queue no interrupt or bottom half will
+ *	touch it and we are (fairly 8-) ) safe.
+ */
+void rose_destroy_socket(struct sock *sk)	/* Not static as it's used by the timer */
+{
+	struct sk_buff *skb;
+	unsigned long flags;
+	
+	save_flags(flags);
+	cli();
+	
+	del_timer(&sk->timer);
+	
+	rose_remove_socket(sk);
+	rose_clear_queues(sk);		/* Flush the queues */
+	
+	while ((skb = skb_dequeue(&sk->receive_queue)) != NULL) {
+		if (skb->sk != sk) {			/* A pending connection */
+			skb->sk->dead = 1;	/* Queue the unaccepted socket for death */
+			rose_set_timer(skb->sk);
+			skb->sk->protinfo.rose->state = ROSE_STATE_0;
+		}
+
+		kfree_skb(skb, FREE_READ);
+	}
+	
+	if (sk->wmem_alloc || sk->rmem_alloc) { /* Defer: outstanding buffers */
+		init_timer(&sk->timer);
+		sk->timer.expires  = jiffies + 10 * HZ;
+		sk->timer.function = rose_destroy_timer;
+		sk->timer.data     = (unsigned long)sk;
+		add_timer(&sk->timer);
+	} else {
+		kfree_s(sk->protinfo.rose, sizeof(*sk->protinfo.rose));
+		sk_free(sk);
+	}
+
+	restore_flags(flags);
+}
+
+/*
+ *	Handling for system calls applied via the various interfaces to a
+ *	Rose socket object.
+ */
+ 
+static int rose_fcntl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	return -EINVAL;
+}
+
+/*
+ * dl1bke 960311: set parameters for existing Rose connections,
+ *		  includes a KILL command to abort any connection.
+ *		  VERY useful for debugging ;-)
+ */
+static int rose_ctl_ioctl(const unsigned int cmd, void *arg)
+{
+	struct rose_ctl_struct rose_ctl;
+	struct sock *sk;
+	unsigned long flags;
+	struct device *dev;
+	int err;
+	
+	if ((err = verify_area(VERIFY_READ, arg, sizeof(rose_ctl))) != 0)
+		return err;
+
+	copy_from_user(&rose_ctl, arg, sizeof(rose_ctl));
+
+	if ((dev = rose_ax25_dev_get(rose_ctl.dev)) == NULL)
+		return -EINVAL;
+	
+	if ((sk = rose_find_socket(rose_ctl.lci, dev)) == NULL)
+		return -ENOTCONN;
+
+	switch (rose_ctl.cmd) {
+		case ROSE_KILL:
+			rose_clear_queues(sk);
+			rose_write_internal(sk, ROSE_CLEAR_REQUEST);
+			sk->protinfo.rose->state = ROSE_STATE_0;
+			sk->state                = TCP_CLOSE;
+			sk->err                  = ENETRESET;
+			if (!sk->dead)
+				sk->state_change(sk);
+			sk->dead                 = 1;
+			rose_set_timer(sk);
+	  		break;
+
+	  	case ROSE_T0:
+  			if (rose_ctl.arg < 1) 
+  				return -EINVAL;
+  			if (sk->protinfo.rose->neighbour != NULL) {
+	  			save_flags(flags); cli();
+	  			sk->protinfo.rose->neighbour->t0 = rose_ctl.arg * PR_SLOWHZ;
+	  			restore_flags(flags);
+	  		}
+  			break;
+
+	  	case ROSE_T1:
+  			if (rose_ctl.arg < 1) 
+  				return -EINVAL;
+  			save_flags(flags); cli();
+  			sk->protinfo.rose->t1 = rose_ctl.arg * PR_SLOWHZ;
+  			restore_flags(flags);
+  			break;
+
+	  	case ROSE_T2:
+	  		if (rose_ctl.arg < 1) 
+	  			return -EINVAL;
+	  		save_flags(flags); cli();
+	  		sk->protinfo.rose->t2 = rose_ctl.arg * PR_SLOWHZ;
+	  		restore_flags(flags);
+	  		break;
+
+	  	case ROSE_T3:
+	  		if (rose_ctl.arg < 1) 
+	  			return -EINVAL;
+	  		save_flags(flags); cli();
+	  		sk->protinfo.rose->t3 = rose_ctl.arg * PR_SLOWHZ;
+	  		restore_flags(flags);
+	  		break;
+
+	  	case ROSE_IDLE:
+	  		if (rose_ctl.arg < 1) 
+	  			return -EINVAL;
+	  		save_flags(flags); cli();
+	  		sk->protinfo.rose->idle = rose_ctl.arg * 60 * PR_SLOWHZ;
+	  		restore_flags(flags);
+	  		break;
+
+	  	default:
+	  		return -EINVAL;
+	  }
+	  
+	  return 0;
+}
+
+static int rose_setsockopt(struct socket *sock, int level, int optname,
+	char *optval, int optlen)
+{
+	struct sock *sk;
+	int err, opt;
+
+	sk = (struct sock *)sock->data;
+	
+	if (level == SOL_SOCKET)
+		return sock_setsockopt(sk, level, optname, optval, optlen);
+
+	if (level != SOL_ROSE)
+		return -EOPNOTSUPP;
+
+	if (optval == NULL)
+		return -EINVAL;
+
+	if ((err = verify_area(VERIFY_READ, optval, sizeof(int))) != 0)
+		return err;
+
+	get_user(opt, (int *)optval);
+	
+	switch (optname) {
+		case ROSE_T0:
+			if (opt < 1)
+				return -EINVAL;
+			if (sk->protinfo.rose->neighbour != NULL)
+				sk->protinfo.rose->neighbour->t0 = opt * PR_SLOWHZ;
+			return 0;
+
+		case ROSE_T1:
+			if (opt < 1)
+				return -EINVAL;
+			sk->protinfo.rose->t1 = opt * PR_SLOWHZ;
+			return 0;
+
+		case ROSE_T2:
+			if (opt < 1)
+				return -EINVAL;
+			sk->protinfo.rose->t2 = opt * PR_SLOWHZ;
+			return 0;
+			
+		case ROSE_T3:
+			if (opt < 1)
+				return -EINVAL;
+			sk->protinfo.rose->t3 = opt * PR_SLOWHZ;
+			return 0;
+			
+		case ROSE_IDLE:
+			if (opt < 1)
+				return -EINVAL;
+			sk->protinfo.rose->idle = opt * 60 * PR_SLOWHZ;
+			return 0;
+			
+		case ROSE_HDRINCL:
+			sk->protinfo.rose->hdrincl = opt ? 1 : 0;
+			return 0;
+
+		default:
+			return -ENOPROTOOPT;
+	}
+}
+
+static int rose_getsockopt(struct socket *sock, int level, int optname,
+	char *optval, int *optlen)
+{
+	struct sock *sk;
+	int val = 0;
+	int err; 
+
+	sk = (struct sock *)sock->data;
+	
+	if (level == SOL_SOCKET)
+		return sock_getsockopt(sk, level, optname, optval, optlen);
+	
+	if (level != SOL_ROSE)
+		return -EOPNOTSUPP;
+	
+	switch (optname) {
+		case ROSE_T0:
+			if (sk->protinfo.rose->neighbour != NULL)
+				val = sk->protinfo.rose->neighbour->t0 / PR_SLOWHZ;
+			else
+				val = sysctl_rose_restart_request_timeout / PR_SLOWHZ;
+			break;
+			
+		case ROSE_T1:
+			val = sk->protinfo.rose->t1 / PR_SLOWHZ;
+			break;
+			
+		case ROSE_T2:
+			val = sk->protinfo.rose->t2 / PR_SLOWHZ;
+			break;
+			
+		case ROSE_T3:
+			val = sk->protinfo.rose->t3 / PR_SLOWHZ;
+			break;
+						
+		case ROSE_IDLE:
+			val = sk->protinfo.rose->idle / (PR_SLOWHZ * 60);
+			break;
+						
+		case ROSE_HDRINCL:
+			val = sk->protinfo.rose->hdrincl;
+			break;
+
+		default:
+			return -ENOPROTOOPT;
+	}
+
+	if ((err = verify_area(VERIFY_WRITE, optlen, sizeof(int))) != 0)
+		return err;
+
+	put_user(sizeof(int), (unsigned long *)optlen);
+
+	if ((err = verify_area(VERIFY_WRITE, optval, sizeof(int))) != 0)
+		return err;
+
+	put_user(val, (unsigned long *)optval);
+
+	return 0;
+}
+
+static int rose_listen(struct socket *sock, int backlog)
+{
+	struct sock *sk = (struct sock *)sock->data;
+
+	if (sk->state != TCP_LISTEN) {
+		sk->protinfo.rose->dest_ndigis = 0;
+		memset(&sk->protinfo.rose->dest_addr, '\0', ROSE_ADDR_LEN);
+		memset(&sk->protinfo.rose->dest_call, '\0', AX25_ADDR_LEN);
+		memset(&sk->protinfo.rose->dest_digi, '\0', AX25_ADDR_LEN);
+		sk->max_ack_backlog = backlog;
+		sk->state           = TCP_LISTEN;
+		return 0;
+	}
+
+	return -EOPNOTSUPP;
+}
+
+static void def_callback1(struct sock *sk)
+{
+	if (!sk->dead)
+		wake_up_interruptible(sk->sleep);
+}
+
+static void def_callback2(struct sock *sk, int len)
+{
+	if (!sk->dead)
+		wake_up_interruptible(sk->sleep);
+}
+
+static int rose_create(struct socket *sock, int protocol)
+{
+	struct sock *sk;
+	rose_cb *rose;
+
+	if (sock->type != SOCK_SEQPACKET || protocol != 0)
+		return -ESOCKTNOSUPPORT;
+
+	if ((sk = sk_alloc(GFP_ATOMIC)) == NULL)
+		return -ENOMEM;
+
+	if ((rose = (rose_cb *)kmalloc(sizeof(*rose), GFP_ATOMIC)) == NULL) {
+		sk_free(sk);
+		return -ENOMEM;
+	}
+
+	skb_queue_head_init(&sk->receive_queue);
+	skb_queue_head_init(&sk->write_queue);
+	skb_queue_head_init(&sk->back_log);
+
+	init_timer(&sk->timer);
+
+	sk->socket        = sock;
+	sk->type          = sock->type;
+	sk->protocol      = protocol;
+	sk->allocation	  = GFP_KERNEL;
+	sk->rcvbuf        = SK_RMEM_MAX;
+	sk->sndbuf        = SK_WMEM_MAX;
+	sk->state         = TCP_CLOSE;
+	sk->priority      = SOPRI_NORMAL;
+	sk->mtu           = ROSE_MTU;	/* 128 */
+	sk->zapped        = 1;
+	sk->window	  = ROSE_DEFAULT_WINDOW;
+
+	sk->state_change = def_callback1;
+	sk->data_ready   = def_callback2;
+	sk->write_space  = def_callback1;
+	sk->error_report = def_callback1;
+
+	if (sock != NULL) {
+		sock->data = (void *)sk;
+		sk->sleep  = sock->wait;
+	}
+
+	skb_queue_head_init(&rose->ack_queue);
+	skb_queue_head_init(&rose->frag_queue);
+
+	rose->lci      = 0;
+
+	rose->t1       = sysctl_rose_call_request_timeout;
+	rose->t2       = sysctl_rose_reset_request_timeout;
+	rose->t3       = sysctl_rose_clear_request_timeout;
+	rose->idle     = sysctl_rose_no_activity_timeout;
+
+	rose->timer    = 0;
+
+	rose->va       = 0;
+	rose->vr       = 0;
+	rose->vs       = 0;
+	rose->vl       = 0;
+
+	rose->fraglen    = 0;
+	rose->hdrincl    = 0;
+	rose->state      = ROSE_STATE_0;
+	rose->neighbour  = NULL;
+	rose->device     = NULL;
+
+	rose->source_ndigis = 0;
+	rose->dest_ndigis   = 0;
+
+	memset(&rose->source_addr, '\0', ROSE_ADDR_LEN);
+	memset(&rose->dest_addr,   '\0', ROSE_ADDR_LEN);
+	memset(&rose->source_call, '\0', AX25_ADDR_LEN);
+	memset(&rose->dest_call,   '\0', AX25_ADDR_LEN);
+	memset(&rose->source_digi, '\0', AX25_ADDR_LEN);
+	memset(&rose->dest_digi,   '\0', AX25_ADDR_LEN);
+
+	rose->sk          = sk;
+	sk->protinfo.rose = rose;
+
+	return 0;
+}
+
+static struct sock *rose_make_new(struct sock *osk)
+{
+	struct sock *sk;
+	rose_cb *rose;
+
+	if (osk->type != SOCK_SEQPACKET)
+		return NULL;
+
+	if ((sk = (struct sock *)sk_alloc(GFP_ATOMIC)) == NULL)
+		return NULL;
+
+	if ((rose = (rose_cb *)kmalloc(sizeof(*rose), GFP_ATOMIC)) == NULL) {
+		sk_free(sk);
+		return NULL;
+	}
+
+	skb_queue_head_init(&sk->receive_queue);
+	skb_queue_head_init(&sk->write_queue);
+	skb_queue_head_init(&sk->back_log);
+
+	init_timer(&sk->timer);
+
+	sk->type        = osk->type;
+	sk->socket      = osk->socket;
+	sk->priority    = osk->priority;
+	sk->protocol    = osk->protocol;
+	sk->rcvbuf      = osk->rcvbuf;
+	sk->sndbuf      = osk->sndbuf;
+	sk->debug       = osk->debug;
+	sk->state       = TCP_ESTABLISHED;
+	sk->window      = osk->window;
+	sk->mtu         = osk->mtu;
+	sk->sleep       = osk->sleep;
+	sk->zapped      = osk->zapped;
+
+	sk->state_change = def_callback1;
+	sk->data_ready   = def_callback2;
+	sk->write_space  = def_callback1;
+	sk->error_report = def_callback1;
+
+	skb_queue_head_init(&rose->ack_queue);
+	skb_queue_head_init(&rose->frag_queue);
+
+	rose->t1       = osk->protinfo.rose->t1;
+	rose->t2       = osk->protinfo.rose->t2;
+	rose->t3       = osk->protinfo.rose->t3;
+	rose->idle     = osk->protinfo.rose->idle;
+
+	rose->device   = osk->protinfo.rose->device;
+	rose->hdrincl  = osk->protinfo.rose->hdrincl;
+	rose->fraglen  = 0;
+
+	rose->timer    = 0;
+
+	rose->va       = 0;
+	rose->vr       = 0;
+	rose->vs       = 0;
+	rose->vl       = 0;
+	
+	sk->protinfo.rose = rose;
+	rose->sk          = sk;
+
+	return sk;
+}
+
+static int rose_dup(struct socket *newsock, struct socket *oldsock)
+{
+	struct sock *sk = (struct sock *)oldsock->data;
+
+	return rose_create(newsock, sk->protocol);
+}
+
+static int rose_release(struct socket *sock, struct socket *peer)
+{
+	struct sock *sk = (struct sock *)sock->data;
+
+	if (sk == NULL) return 0;
+
+	switch (sk->protinfo.rose->state) {
+
+		case ROSE_STATE_0:
+			sk->state     = TCP_CLOSE;
+			sk->state_change(sk);
+			sk->dead      = 1;
+			rose_destroy_socket(sk);
+			break;
+
+		case ROSE_STATE_1:
+			sk->protinfo.rose->state = ROSE_STATE_0;
+			sk->state                = TCP_CLOSE;
+			sk->state_change(sk);
+			sk->dead                 = 1;
+			rose_destroy_socket(sk);
+			break;
+
+		case ROSE_STATE_2:
+			sk->protinfo.rose->state = ROSE_STATE_0;
+			sk->state                = TCP_CLOSE;
+			sk->state_change(sk);
+			sk->dead                 = 1;
+			rose_destroy_socket(sk);
+			break;			
+
+		case ROSE_STATE_3:
+		case ROSE_STATE_4:
+			rose_clear_queues(sk);
+			rose_write_internal(sk, ROSE_CLEAR_REQUEST);
+			sk->protinfo.rose->timer = sk->protinfo.rose->t3;
+			sk->protinfo.rose->state = ROSE_STATE_2;
+			sk->state                = TCP_CLOSE;
+			sk->state_change(sk);
+			sk->dead                 = 1;
+			sk->destroy              = 1;
+			break;
+
+		default:
+			break;
+	}
+
+	sock->data = NULL;	
+	sk->socket = NULL;	/* Not used, but we should do this. **/
+
+	return 0;
+}
+
+static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+{
+	struct sock *sk;
+	struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
+	struct device *dev;
+	ax25_address *user, *source;
+	
+	sk = (struct sock *)sock->data;
+
+	if (sk->zapped == 0)
+		return -EIO;
+		
+	if (addr_len != sizeof(struct sockaddr_rose))
+		return -EINVAL;
+
+	if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) {
+		if (sk->debug)
+			printk("Rose: bind failed: invalid address\n");
+		return -EADDRNOTAVAIL;
+	}
+
+	source = &addr->srose_call;
+
+	if ((user = ax25_findbyuid(current->euid)) == NULL) {
+		if (ax25_uid_policy && !suser())
+			return -EPERM;
+		user = source;
+	}
+
+	sk->protinfo.rose->source_addr = addr->srose_addr;
+	sk->protinfo.rose->source_call = *user;
+	sk->protinfo.rose->device      = dev;
+
+	if (addr->srose_ndigis == 1) {
+		sk->protinfo.rose->source_ndigis = 1;
+		sk->protinfo.rose->source_digi   = addr->srose_digi;
+	}
+
+	rose_insert_socket(sk);
+
+	sk->zapped = 0;
+
+	if (sk->debug)
+		printk("Rose: socket is bound\n");
+
+	return 0;
+}
+
+static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
+{
+	struct sock *sk = (struct sock *)sock->data;
+	struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
+	ax25_address *user;
+	struct device *dev;
+	
+	if (sk->state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
+		sock->state = SS_CONNECTED;
+		return 0;	/* Connect completed during a ERESTARTSYS event */
+	}
+	
+	if (sk->state == TCP_CLOSE && sock->state == SS_CONNECTING) {
+		sock->state = SS_UNCONNECTED;
+		return -ECONNREFUSED;
+	}
+	
+	if (sk->state == TCP_ESTABLISHED)
+		return -EISCONN;	/* No reconnect on a seqpacket socket */
+		
+	sk->state   = TCP_CLOSE;	
+	sock->state = SS_UNCONNECTED;
+
+	if (addr_len != sizeof(struct sockaddr_rose))
+		return -EINVAL;
+
+	if ((sk->protinfo.rose->neighbour = rose_get_neigh(&addr->srose_addr)) == NULL)	
+		return -ENETUNREACH;
+
+	if (sk->zapped) {	/* Must bind first - autobinding in this may or may not work */
+		sk->zapped = 0;
+
+		if ((dev = rose_dev_first()) == NULL)
+			return -ENETUNREACH;
+
+		if ((user = ax25_findbyuid(current->euid)) == NULL)
+			return -EINVAL;
+
+		memcpy(&sk->protinfo.rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
+		sk->protinfo.rose->source_call = *user;
+		sk->protinfo.rose->device      = dev;
+
+		rose_insert_socket(sk);		/* Finish the bind */
+	}
+
+	sk->protinfo.rose->dest_addr = addr->srose_addr;
+	sk->protinfo.rose->dest_call = addr->srose_call;
+	if (addr->srose_ndigis == 1) {
+		sk->protinfo.rose->dest_ndigis = 1;
+		sk->protinfo.rose->dest_digi   = addr->srose_digi;
+	}
+	sk->protinfo.rose->lci       = rose_new_lci(sk->protinfo.rose->neighbour->dev);
+
+	/* Move to connecting socket, start sending Connect Requests */
+	sock->state   = SS_CONNECTING;
+	sk->state     = TCP_SYN_SENT;
+
+	sk->protinfo.rose->state = ROSE_STATE_1;
+	sk->protinfo.rose->timer = sk->protinfo.rose->t1;
+	rose_write_internal(sk, ROSE_CALL_REQUEST);
+
+	rose_set_timer(sk);
+	
+	/* Now the loop */
+	if (sk->state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
+		return -EINPROGRESS;
+		
+	cli();	/* To avoid races on the sleep */
+
+	/*
+	 * A Connect Ack with Choke or timeout or failed routing will go to closed.
+	 */
+	while (sk->state == TCP_SYN_SENT) {
+		interruptible_sleep_on(sk->sleep);
+		if (current->signal & ~current->blocked) {
+			sti();
+			return -ERESTARTSYS;
+		}
+	}
+
+	if (sk->state != TCP_ESTABLISHED) {
+		sti();
+		sock->state = SS_UNCONNECTED;
+		return sock_error(sk);	/* Always set at this point */
+	}
+	
+	sock->state = SS_CONNECTED;
+
+	sti();
+	
+	return 0;
+}
+	
+static int rose_socketpair(struct socket *sock1, struct socket *sock2)
+{
+	return -EOPNOTSUPP;
+}
+
+static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
+{
+	struct sock *sk;
+	struct sock *newsk;
+	struct sk_buff *skb;
+
+	if (newsock->data)
+		sk_free(newsock->data);
+
+	newsock->data = NULL;
+	
+	sk = (struct sock *)sock->data;
+
+	if (sk->type != SOCK_SEQPACKET)
+		return -EOPNOTSUPP;
+	
+	if (sk->state != TCP_LISTEN)
+		return -EINVAL;
+		
+	/*
+	 *	The write queue this time is holding sockets ready to use
+	 *	hooked into the SABM we saved
+	 */
+	do {
+		cli();
+		if ((skb = skb_dequeue(&sk->receive_queue)) == NULL) {
+			if (flags & O_NONBLOCK) {
+				sti();
+				return 0;
+			}
+			interruptible_sleep_on(sk->sleep);
+			if (current->signal & ~current->blocked) {
+				sti();
+				return -ERESTARTSYS;
+			}
+		}
+	} while (skb == NULL);
+
+	newsk = skb->sk;
+	newsk->pair = NULL;
+	sti();
+
+	/* Now attach up the new socket */
+	skb->sk = NULL;
+	kfree_skb(skb, FREE_READ);
+	sk->ack_backlog--;
+	newsock->data = newsk;
+
+	return 0;
+}
+
+static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
+	int *uaddr_len, int peer)
+{
+	struct sockaddr_rose *srose = (struct sockaddr_rose *)uaddr;
+	struct sock *sk;
+	
+	sk = (struct sock *)sock->data;
+	
+	if (peer != 0) {
+		if (sk->state != TCP_ESTABLISHED)
+			return -ENOTCONN;
+		srose->srose_family = AF_ROSE;
+		srose->srose_ndigis = 0;
+		srose->srose_addr   = sk->protinfo.rose->dest_addr;
+		srose->srose_call   = sk->protinfo.rose->dest_call;
+		if (sk->protinfo.rose->dest_ndigis == 1) {
+			srose->srose_ndigis = 1;
+			srose->srose_digi   = sk->protinfo.rose->dest_digi;
+		}
+		*uaddr_len = sizeof(struct sockaddr_rose);
+	} else {
+		srose->srose_family = AF_ROSE;
+		srose->srose_ndigis = 0;
+		srose->srose_addr   = sk->protinfo.rose->source_addr;
+		srose->srose_call   = sk->protinfo.rose->source_call;
+		if (sk->protinfo.rose->source_ndigis == 1) {
+			srose->srose_ndigis = 1;
+			srose->srose_digi   = sk->protinfo.rose->source_digi;
+		}
+		*uaddr_len = sizeof(struct sockaddr_rose);
+	}
+
+	return 0;
+}
+ 
+int rose_rx_call_request(struct sk_buff *skb, struct device *dev, struct rose_neigh *neigh, unsigned int lci)
+{
+	struct sock *sk;
+	struct sock *make;	
+	rose_cb rose;
+
+	skb->sk = NULL;		/* Initially we don't know who it's for */
+
+	/*
+	 *	skb->data points to the rose frame start
+	 */
+
+	/*
+	 * XXX This is an error.
+	 */
+	if (!rose_parse_facilities(skb, &rose)) {
+		return 0;
+	}
+		
+	sk = rose_find_listener(&rose.source_call);
+
+	/*
+	 * We can't accept the Call Request.
+	 */
+	if (sk == NULL || sk->ack_backlog == sk->max_ack_backlog || (make = rose_make_new(sk)) == NULL) {
+		rose_transmit_clear_request(neigh, lci, 0x01);
+		return 0;
+	}
+
+	skb->sk     = make;
+	make->state = TCP_ESTABLISHED;
+
+	make->protinfo.rose->lci           = lci;
+	make->protinfo.rose->dest_addr     = rose.dest_addr;
+	make->protinfo.rose->dest_call     = rose.dest_call;
+	make->protinfo.rose->dest_ndigis   = rose.dest_ndigis;
+	make->protinfo.rose->dest_digi     = rose.dest_digi;
+	make->protinfo.rose->source_addr   = rose.source_addr;
+	make->protinfo.rose->source_call   = rose.source_call;
+	make->protinfo.rose->source_ndigis = rose.source_ndigis;
+	make->protinfo.rose->source_digi   = rose.source_digi;
+	make->protinfo.rose->neighbour     = neigh;
+	make->protinfo.rose->device        = dev;
+	
+	rose_write_internal(make, ROSE_CALL_ACCEPTED);
+
+	make->protinfo.rose->condition = 0x00;
+	make->protinfo.rose->vs        = 0;
+	make->protinfo.rose->va        = 0;
+	make->protinfo.rose->vr        = 0;
+	make->protinfo.rose->vl        = 0;
+	make->protinfo.rose->state     = ROSE_STATE_3;
+	sk->ack_backlog++;
+	make->pair = sk;
+
+	rose_insert_socket(make);
+
+	skb_queue_head(&sk->receive_queue, skb);
+
+	rose_set_timer(make);
+
+	if (!sk->dead)
+		sk->data_ready(sk, skb->len);
+
+	return 1;
+}
+
+static int rose_sendmsg(struct socket *sock, struct msghdr *msg, int len, int noblock, int flags)
+{
+	struct sock *sk = (struct sock *)sock->data;
+	struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
+	int err;
+	struct sockaddr_rose srose;
+	struct sk_buff *skb;
+	unsigned char *asmptr;
+	int size;
+	
+	if (sk->err)
+		return sock_error(sk);
+
+	if (flags)
+		return -EINVAL;
+
+	if (sk->zapped)
+		return -EADDRNOTAVAIL;
+
+	if (sk->protinfo.rose->device == NULL)
+		return -ENETUNREACH;
+		
+	if (usrose) {
+		if (msg->msg_namelen < sizeof(srose))
+			return -EINVAL;
+		srose = *usrose;
+		if (rosecmp(&sk->protinfo.rose->dest_addr, &srose.srose_addr) != 0 ||
+		    ax25cmp(&sk->protinfo.rose->dest_call, &srose.srose_call) != 0)
+			return -EISCONN;
+		if (srose.srose_ndigis == 1 && sk->protinfo.rose->dest_ndigis == 1) {
+			if (ax25cmp(&sk->protinfo.rose->dest_digi, &srose.srose_digi) != 0)
+				return -EISCONN;
+		}
+		if (srose.srose_family != AF_ROSE)
+			return -EINVAL;
+	} else {
+		if (sk->state != TCP_ESTABLISHED)
+			return -ENOTCONN;
+
+		srose.srose_family = AF_ROSE;
+		srose.srose_addr   = sk->protinfo.rose->dest_addr;
+		srose.srose_call   = sk->protinfo.rose->dest_call;
+		srose.srose_ndigis = 0;
+
+		if (sk->protinfo.rose->dest_ndigis == 1) {
+			srose.srose_ndigis = 1;
+			srose.srose_digi   = sk->protinfo.rose->dest_digi;
+		}
+	}
+	
+	if (sk->debug)
+		printk("Rose: sendto: Addresses built.\n");
+
+	/* Build a packet */
+	if (sk->debug)
+		printk("Rose: sendto: building packet.\n");
+
+	size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
+
+	if ((skb = sock_alloc_send_skb(sk, size, 0, 0, &err)) == NULL)
+		return err;
+
+	skb->sk   = sk;
+	skb->free = 1;
+	skb->arp  = 1;
+
+	skb_reserve(skb, size - len);
+	
+	/*
+	 *	Push down the Rose header
+	 */
+
+	asmptr = skb_push(skb, ROSE_MIN_LEN);
+
+	if (sk->debug)
+		printk("Building Rose Header.\n");
+
+	/* Build a Rose Transport header */
+
+	*asmptr++ = ((sk->protinfo.rose->lci >> 8) & 0x0F) | GFI;
+	*asmptr++ = (sk->protinfo.rose->lci >> 0) & 0xFF;
+	*asmptr++ = ROSE_DATA;
+	
+	if (sk->debug)
+		printk("Built header.\n");
+
+	/*
+	 *	Put the data on the end
+	 */
+
+	skb->h.raw = skb_put(skb, len);
+
+	asmptr = skb->h.raw;
+	
+	if (sk->debug)
+		printk("Rose: Appending user data\n");
+
+	/* User data follows immediately after the Rose transport header */
+	memcpy_fromiovec(asmptr, msg->msg_iov, len);
+
+	if (sk->debug)
+		printk("Rose: Transmitting buffer\n");
+
+	if (sk->state != TCP_ESTABLISHED) {
+		kfree_skb(skb, FREE_WRITE);
+		return -ENOTCONN;
+	}
+
+	rose_output(sk, skb);	/* Shove it onto the queue */
+
+	return len;
+}
+
+
+static int rose_recvmsg(struct socket *sock, struct msghdr *msg, int size, int noblock,
+		   int flags, int *addr_len)
+{
+	struct sock *sk = (struct sock *)sock->data;
+	struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
+	int copied;
+	struct sk_buff *skb;
+	int er;
+
+	if (sk->err)
+		return sock_error(sk);
+	
+	if (addr_len != NULL)
+		*addr_len = sizeof(*srose);
+
+	/*
+	 * This works for seqpacket too. The receiver has ordered the queue for
+	 * us! We do one quick check first though
+	 */
+	if (sk->state != TCP_ESTABLISHED)
+		return -ENOTCONN;
+
+	/* Now we can treat all alike */
+	if ((skb = skb_recv_datagram(sk, flags, noblock, &er)) == NULL)
+		return er;
+
+	if (!sk->protinfo.rose->hdrincl) {
+		skb_pull(skb, ROSE_MIN_LEN);
+		skb->h.raw = skb->data;
+	}
+
+	copied = (size < skb->len) ? size : skb->len;
+	skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+	
+	if (srose != NULL) {
+		struct sockaddr_rose addr;
+		
+		addr.srose_family = AF_ROSE;
+		addr.srose_addr   = sk->protinfo.rose->dest_addr;
+		addr.srose_call   = sk->protinfo.rose->dest_call;
+		addr.srose_ndigis = 0;
+
+		if (sk->protinfo.rose->dest_ndigis == 1) {
+			addr.srose_ndigis = 1;
+			addr.srose_digi   = sk->protinfo.rose->dest_digi;
+		}
+
+		*srose = addr;
+
+		*addr_len = sizeof(*srose);
+	}
+
+	skb_free_datagram(sk, skb);
+
+	return copied;
+}
+
+static int rose_shutdown(struct socket *sk, int how)
+{
+	return -EOPNOTSUPP;
+}
+
+static int rose_select(struct socket *sock , int sel_type, select_table *wait)
+{
+	struct sock *sk = (struct sock *)sock->data;
+
+	return datagram_select(sk, sel_type, wait);
+}
+
+static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	struct sock *sk = (struct sock *)sock->data;
+	int err;
+	long amount = 0;
+
+	switch (cmd) {
+		case TIOCOUTQ:
+			if ((err = verify_area(VERIFY_WRITE, (void *)arg, sizeof(unsigned long))) != 0)
+				return err;
+			amount = sk->sndbuf - sk->wmem_alloc;
+			if (amount < 0)
+				amount = 0;
+			put_user(amount, (unsigned long *)arg);
+			return 0;
+
+		case TIOCINQ: {
+			struct sk_buff *skb;
+			/* These two are safe on a single CPU system as only user tasks fiddle here */
+			if ((skb = skb_peek(&sk->receive_queue)) != NULL)
+				amount = skb->len - 20;
+			if ((err = verify_area(VERIFY_WRITE, (void *)arg, sizeof(unsigned long))) != 0)
+				return err;
+			put_user(amount, (unsigned long *)arg);
+			return 0;
+		}
+
+		case SIOCGSTAMP:
+			if (sk != NULL) {
+				if (sk->stamp.tv_sec==0)
+					return -ENOENT;
+				if ((err = verify_area(VERIFY_WRITE,(void *)arg,sizeof(struct timeval))) != 0)
+					return err;
+				copy_to_user((void *)arg, &sk->stamp, sizeof(struct timeval));
+				return 0;
+			}
+			return -EINVAL;
+
+		case SIOCGIFADDR:
+		case SIOCSIFADDR:
+		case SIOCGIFDSTADDR:
+		case SIOCSIFDSTADDR:
+		case SIOCGIFBRDADDR:
+		case SIOCSIFBRDADDR:
+		case SIOCGIFNETMASK:
+		case SIOCSIFNETMASK:
+		case SIOCGIFMETRIC:
+		case SIOCSIFMETRIC:
+			return -EINVAL;
+
+		case SIOCADDRT:
+		case SIOCDELRT:
+			if (!suser()) return -EPERM;
+			return rose_rt_ioctl(cmd, (void *)arg);
+
+ 		case SIOCRSCTLCON:
+ 			if (!suser()) return -EPERM;
+ 			return rose_ctl_ioctl(cmd, (void *)arg);
+ 
+ 		default:
+			return dev_ioctl(cmd, (void *)arg);
+	}
+
+	/*NOTREACHED*/
+	return 0;
+}
+
+static int rose_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
+{
+	struct sock *s;
+	struct device *dev;
+	const char *devname, *callsign;
+	int len = 0;
+	off_t pos = 0;
+	off_t begin = 0;
+  
+	cli();
+
+	len += sprintf(buffer, "dest_addr  dest_call dest_digi src_addr   src_call  src_digi  dev   lci st vs vr va   t  t1  t2  t3 Snd-Q Rcv-Q\n");
+
+	for (s = rose_list; s != NULL; s = s->next) {
+		if ((dev = s->protinfo.rose->device) == NULL)
+			devname = "???";
+		else
+			devname = dev->name;
+
+		len += sprintf(buffer + len, "%-10s %-9s ",
+			rose2asc(&s->protinfo.rose->dest_addr),
+			ax2asc(&s->protinfo.rose->dest_call));
+		len += sprintf(buffer + len, "%-9s ",
+			ax2asc(&s->protinfo.rose->dest_digi));
+
+		if (ax25cmp(&s->protinfo.rose->source_call, &null_ax25_address) == 0)
+			callsign = "??????-?";
+		else
+			callsign = ax2asc(&s->protinfo.rose->source_call);
+
+		len += sprintf(buffer + len, "%-10s %-9s ",
+			rose2asc(&s->protinfo.rose->source_addr),
+			callsign);
+		len += sprintf(buffer + len, "%-9s %-5s %3.3X  %d  %d  %d  %d %3d %3d %3d %3d %5d %5d\n",
+			ax2asc(&s->protinfo.rose->source_digi),
+			devname,  s->protinfo.rose->lci & 0x0FFF,
+			s->protinfo.rose->state,
+			s->protinfo.rose->vs, s->protinfo.rose->vr, s->protinfo.rose->va,
+			s->protinfo.rose->timer / PR_SLOWHZ,
+			s->protinfo.rose->t1    / PR_SLOWHZ,
+			s->protinfo.rose->t2    / PR_SLOWHZ,
+			s->protinfo.rose->t3    / PR_SLOWHZ,
+			s->wmem_alloc, s->rmem_alloc);
+		
+		pos = begin + len;
+
+		if (pos < offset) {
+			len   = 0;
+			begin = pos;
+		}
+		
+		if (pos > offset + length)
+			break;
+	}
+
+	sti();
+
+	*start = buffer + (offset - begin);
+	len   -= (offset - begin);
+
+	if (len > length) len = length;
+
+	return(len);
+} 
+
+struct proto_ops rose_proto_ops = {
+	AF_ROSE,
+	
+	rose_create,
+	rose_dup,
+	rose_release,
+	rose_bind,
+	rose_connect,
+	rose_socketpair,
+	rose_accept,
+	rose_getname,
+	rose_select,
+	rose_ioctl,
+	rose_listen,
+	rose_shutdown,
+	rose_setsockopt,
+	rose_getsockopt,
+	rose_fcntl,
+	rose_sendmsg,
+	rose_recvmsg
+};
+
+struct notifier_block rose_dev_notifier = {
+	rose_device_event,
+	0
+};
+
+void rose_proto_init(struct net_proto *pro)
+{
+	sock_register(rose_proto_ops.family, &rose_proto_ops);
+	register_netdevice_notifier(&rose_dev_notifier);
+	printk(KERN_INFO "G4KLX Rose for Linux. Version 0.1 for AX25.033 Linux 2.1\n");
+
+	if (!ax25_protocol_register(AX25_P_ROSE, rose_route_frame))
+		printk(KERN_ERR "Rose unable to register protocol with AX.25\n");
+	if (!ax25_linkfail_register(rose_link_failed))
+		printk(KERN_ERR "Rose unable to register linkfail handler with AX.25\n");
+
+	rose_register_sysctl();
+
+#ifdef CONFIG_PROC_FS
+	proc_net_register(&(struct proc_dir_entry) {
+		PROC_NET_RS, 4, "rose",
+		S_IFREG | S_IRUGO, 1, 0, 0,
+		0, &proc_net_inode_operations, 
+		rose_get_info
+	});
+	proc_net_register(&(struct proc_dir_entry) {
+		PROC_NET_RS_NEIGH, 10, "rose_neigh",
+		S_IFREG | S_IRUGO, 1, 0, 0,
+		0, &proc_net_inode_operations, 
+		rose_neigh_get_info
+	});
+	proc_net_register(&(struct proc_dir_entry) {
+		PROC_NET_RS_NODES, 10, "rose_nodes",
+		S_IFREG | S_IRUGO, 1, 0, 0,
+		0, &proc_net_inode_operations, 
+		rose_nodes_get_info
+	});
+
+	proc_net_register(&(struct proc_dir_entry) {
+		PROC_NET_RS_ROUTES, 11, "rose_routes",
+		S_IFREG | S_IRUGO, 1, 0, 0,
+		0, &proc_net_inode_operations, 
+		rose_routes_get_info
+	});
+#endif	
+}
+
+#endif