path: root/net/irda/iriap.c

/*********************************************************************
 *                
 * Filename:      iriap.c
 * Version:       0.8
 * Description:   Information Access Protocol (IAP)
 * Status:        Experimental.
 * Author:        Dag Brattli <dagb@cs.uit.no>
 * Created at:    Thu Aug 21 00:02:07 1997
 * Modified at:   Fri Apr 23 09:57:12 1999
 * Modified by:   Dag Brattli <dagb@cs.uit.no>
 * 
 *     Copyright (c) 1998 Dag Brattli <dagb@cs.uit.no>, 
 *     All Rights Reserved.
 *     
 *     This program 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.
 *
 *     Neither Dag Brattli nor University of Tromsø admit liability nor
 *     provide warranty for any of this software. This material is 
 *     provided "AS-IS" and at no charge.
 *
 ********************************************************************/

#include <linux/config.h>
#include <linux/types.h>
#include <linux/skbuff.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/irda.h>

#include <asm/byteorder.h>
#include <asm/unaligned.h>

#include <net/irda/irda.h>
#include <net/irda/irttp.h>
#include <net/irda/irmod.h>
#include <net/irda/irlmp.h>
#include <net/irda/irias_object.h>
#include <net/irda/iriap_event.h>
#include <net/irda/iriap.h>

/* FIXME: This one should go in irlmp.c */
static const char *ias_charset_types[] = {
	"CS_ASCII",
	"CS_ISO_8859_1",
	"CS_ISO_8859_2",
	"CS_ISO_8859_3",
	"CS_ISO_8859_4",
	"CS_ISO_8859_5",
	"CS_ISO_8859_6",
	"CS_ISO_8859_7",
	"CS_ISO_8859_8",
	"CS_ISO_8859_9",
	"CS_UNICODE"
};

static hashbin_t *iriap = NULL;
static __u32 service_handle; 

extern char *lmp_reasons[];

static struct iriap_cb *iriap_open( __u8 slsap, int mode);
static void __iriap_close( struct iriap_cb *self);
static void iriap_disconnect_indication(void *instance, void *sap, 
					LM_REASON reason, struct sk_buff *skb);
static void iriap_connect_indication(void *instance, void *sap, 
				     struct qos_info *qos, __u32 max_sdu_size,
				     struct sk_buff *skb);
static int iriap_data_indication(void *instance, void *sap, 
				 struct sk_buff *skb);

/*
 * Function iriap_init (void)
 *
 *    Initializes the IrIAP layer, called by the module initialization code
 *    in irmod.c 
 */
__initfunc(int iriap_init(void))
{
	__u16 hints;
	struct ias_object *obj;

	DEBUG( 4, __FUNCTION__ "()\n");
	
	/* Allocate master array */
	iriap = hashbin_new( HB_LOCAL);
	if ( iriap == NULL)
		return -ENOMEM;

	objects = hashbin_new( HB_LOCAL);
	if ( objects == NULL) {
		printk( KERN_WARNING 
			"IrIAP: Can't allocate objects hashbin!\n");
		return -ENOMEM;
	}

	/* 
	 *  Register some default services for IrLMP 
	 */
	hints  = irlmp_service_to_hint(S_COMPUTER);
	hints |= irlmp_service_to_hint(S_PNP);
	service_handle = irlmp_register_service(hints);

	/* 
	 *  Register the Device object with LM-IAS
	 */
	obj = irias_new_object( "Device", IAS_DEVICE_ID);
	irias_add_string_attrib( obj, "DeviceName", "Linux");
	irias_insert_object( obj);

	/*  
	 *  Register server support with IrLMP so we can accept incoming 
	 *  connections 
	 */
	iriap_open( LSAP_IAS, IAS_SERVER);
	
	return 0;
}

/*
 * Function iriap_cleanup (void)
 *
 *    Initializes the IrIAP layer, called by the module cleanup code in 
 *    irmod.c
 */
void iriap_cleanup(void) 
{
	irlmp_unregister_service(service_handle);
	
	hashbin_delete(iriap, (FREE_FUNC) __iriap_close);
	hashbin_delete(objects, (FREE_FUNC) __irias_delete_object);	
}

/*
 * Function iriap_open (void)
 *
 *    Opens an instance of the IrIAP layer, and registers with IrLMP
 */
struct iriap_cb *iriap_open( __u8 slsap_sel, int mode)
{
	struct iriap_cb *self;
	struct notify_t notify;
	struct lsap_cb *lsap;

	DEBUG( 4, __FUNCTION__ "()\n");

	self = kmalloc( sizeof(struct iriap_cb), GFP_ATOMIC);
	if ( self == NULL) {
		DEBUG( 0, "iriap_open(), Unable to kmalloc!\n");
		return NULL;
	}

	/*
	 *  Initialize instance
	 */
	memset( self, 0, sizeof(struct iriap_cb));

	irda_notify_init( &notify);
	notify.connect_confirm = iriap_connect_confirm;
	notify.connect_indication = iriap_connect_indication;
	notify.disconnect_indication = iriap_disconnect_indication;
	notify.data_indication = iriap_data_indication;
	notify.instance = self;
	if ( mode == IAS_CLIENT)
		strcpy( notify.name, "IrIAS cli");
	else
		strcpy( notify.name, "IrIAS srv");

	lsap = irlmp_open_lsap( slsap_sel, &notify);
	if ( lsap == NULL) {
		DEBUG( 0, "iriap_open: Unable to allocated LSAP!\n");
		return NULL;
	}
	slsap_sel = lsap->slsap_sel;
	DEBUG( 4, __FUNCTION__ "(), source LSAP sel=%02x\n", slsap_sel);
	
	self->magic = IAS_MAGIC;
	self->lsap = lsap;
	self->slsap_sel = slsap_sel;
	self->mode = mode;

	init_timer( &self->watchdog_timer);

	hashbin_insert( iriap, (QUEUE*) self, slsap_sel, NULL);
	
	iriap_next_client_state( self, S_DISCONNECT);
	iriap_next_call_state( self, S_MAKE_CALL);
	iriap_next_server_state( self, R_DISCONNECT);
	iriap_next_r_connect_state( self, R_WAITING);
	
	return self;
}

/*
 * Function __iriap_close (self)
 *
 *    Removes (deallocates) the IrIAP instance
 *
 */
static void __iriap_close( struct iriap_cb *self)
{
	DEBUG( 4, __FUNCTION__ "()\n");

	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IAS_MAGIC, return;);

	del_timer( &self->watchdog_timer);

	self->magic = 0;

	kfree( self);
}

/*
 * Function iriap_close (void)
 *
 *    Closes IrIAP and deregisters with IrLMP
 */
void iriap_close( struct iriap_cb *self)
{
	struct iriap_cb *entry;

	DEBUG( 4, __FUNCTION__ "()\n");

	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IAS_MAGIC, return;);

	if ( self->lsap) {
		irlmp_close_lsap( self->lsap);
		self->lsap = NULL;
	}

	entry = (struct iriap_cb *) hashbin_remove( iriap, self->slsap_sel, 
						    NULL);
	ASSERT( entry == self, return;);

	__iriap_close( self);
}

/*
 * Function iriap_disconnect_indication (handle, reason)
 *
 *    Got disconnect, so clean up everything assosiated with this connection
 *
 */
static void iriap_disconnect_indication( void *instance, void *sap, 
					 LM_REASON reason, 
					 struct sk_buff *userdata)
{
	struct iriap_cb *self;

	DEBUG(4, __FUNCTION__ "(), reason=%s\n", lmp_reasons[reason]);

	self = (struct iriap_cb *) instance;

	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IAS_MAGIC, return;);

	ASSERT( iriap != NULL, return;);

	del_timer( &self->watchdog_timer);

	if ( self->mode == IAS_CLIENT) {
		DEBUG( 4, __FUNCTION__ "(), disconnect as client\n");

		/* 
		 * Inform service user that the request failed by sending 
		 * it a NULL value.
		 */
		if (self->confirm)
 			self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
		
		
		iriap_do_client_event( self, IAP_LM_DISCONNECT_INDICATION, 
				       NULL);
		/* Close instance only if client */
		iriap_close( self);
		
	} else {
		DEBUG( 4, __FUNCTION__ "(), disconnect as server\n");
		iriap_do_server_event( self, IAP_LM_DISCONNECT_INDICATION, 
				       NULL);
	}

	if ( userdata) {
		dev_kfree_skb( userdata);
	}
}

/*
 * Function iriap_disconnect_request (handle)
 *
 *    
 *
 */
void iriap_disconnect_request( struct iriap_cb *self)
{
	struct sk_buff *skb;

	DEBUG( 4, __FUNCTION__ "()\n");

	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IAS_MAGIC, return;);

	skb = dev_alloc_skb( 64);
	if (skb == NULL) {
		DEBUG( 0, __FUNCTION__
		       "(), Could not allocate an sk_buff of length %d\n", 64);
		return;
	}

	/* 
	 *  Reserve space for MUX and LAP header 
	 */
 	skb_reserve( skb, LMP_CONTROL_HEADER+LAP_HEADER);

	irlmp_disconnect_request( self->lsap, skb);
}

void iriap_getinfobasedetails_request(void) 
{
	DEBUG( 0, __FUNCTION__ "(), Not implemented!\n");
}

void iriap_getinfobasedetails_confirm(void) 
{
	DEBUG( 0, __FUNCTION__ "(), Not implemented!\n");
}

void iriap_getobjects_request(void) 
{
	DEBUG( 0, __FUNCTION__ "(), Not implemented!\n");
}

void iriap_getobjects_confirm(void) 
{
	DEBUG( 0, __FUNCTION__ "(), Not implemented!\n");
}

void iriap_getvalue(void) 
{
	DEBUG( 0, __FUNCTION__ "(), Not implemented!\n");
}

/*
 * Function iriap_getvaluebyclass (addr, name, attr)
 *
 *    Retreive all values from attribute in all objects with given class
 *    name
 */
void iriap_getvaluebyclass_request(char *name, char *attr, 
				   __u32 saddr, __u32 daddr,
				   CONFIRM_CALLBACK callback, void *priv)
{
	struct sk_buff *skb;
	struct iriap_cb *self;
	__u8 *frame;
	int name_len, attr_len;
	__u8 slsap = LSAP_ANY;  /* Source LSAP to use */

	DEBUG(4, __FUNCTION__ "()\n");
	
	self = iriap_open(slsap, IAS_CLIENT);
	if (!self)
		return;

	self->mode = IAS_CLIENT;
	self->confirm = callback;
	self->priv = priv;

	self->daddr = daddr;
	self->saddr = saddr;

	/* 
	 *  Save operation, so we know what the later indication is about
	 */
	self->operation = GET_VALUE_BY_CLASS; 

	/* Give ourselves 10 secs to finish this operation */
	iriap_start_watchdog_timer(self, 10*HZ);
	
	skb = dev_alloc_skb( 64);
	if (!skb)
		return;

	name_len = strlen(name);
	attr_len = strlen(attr);

	/* Reserve space for MUX and LAP header */
 	skb_reserve(skb, LMP_CONTROL_HEADER+LAP_HEADER);
	skb_put(skb, 3+name_len+attr_len);
	frame = skb->data;

	/* Build frame */
	frame[0] = IAP_LST | GET_VALUE_BY_CLASS;
	frame[1] = name_len;                       /* Insert length of name */
	memcpy(frame+2, name, name_len);           /* Insert name */
	frame[2+name_len] = attr_len;              /* Insert length of attr */
	memcpy(frame+3+name_len, attr, attr_len);  /* Insert attr */

	iriap_do_client_event(self, IAP_CALL_REQUEST_GVBC, skb);
}

/*
 * Function iriap_getvaluebyclass_confirm (self, skb)
 *
 *    Got result from GetValueByClass command. Parse it and return result
 *    to service user.
 *
 */
void iriap_getvaluebyclass_confirm(struct iriap_cb *self, struct sk_buff *skb) 
{
	struct ias_value *value;
	int n;
	int charset;
	__u32 value_len;
	__u32 tmp_cpu32;
	__u16 obj_id;
	__u16 len;
	__u8  type;
	__u8 *fp;

	ASSERT(self != NULL, return;);
	ASSERT(self->magic == IAS_MAGIC, return;);
	ASSERT(skb != NULL, return;);

	/* Initialize variables */
	fp = skb->data;
	n = 2;

	/* Get length, MSB first */
	len = be16_to_cpu(get_unaligned((__u16 *)(fp+n))); n += 2;

	DEBUG(4, __FUNCTION__ "(), len=%d\n", len);

	/* Get object ID, MSB first */
	obj_id = be16_to_cpu(get_unaligned((__u16 *)(fp+n))); n += 2;
/* 	memcpy(&obj_id, fp+n, 2); n += 2; */
/* 	be16_to_cpus(&obj_id); */

	type = fp[n++];
	DEBUG( 4, __FUNCTION__ "(), Value type = %d\n", type);

	switch( type) {
	case IAS_INTEGER:
		memcpy(&tmp_cpu32, fp+n, 4); n += 4;
		be32_to_cpus(&tmp_cpu32);
		value = irias_new_integer_value(tmp_cpu32);

		/*  Legal values restricted to 0x01-0x6f, page 15 irttp */
		DEBUG( 4, __FUNCTION__ "(), lsap=%d\n", value->t.integer); 
		break;
	case IAS_STRING:
		charset = fp[n++];

		switch(charset) {
		case CS_ASCII:
			break;
/* 		case CS_ISO_8859_1: */
/* 		case CS_ISO_8859_2: */
/* 		case CS_ISO_8859_3: */
/* 		case CS_ISO_8859_4: */
/* 		case CS_ISO_8859_5: */
/* 		case CS_ISO_8859_6: */
/* 		case CS_ISO_8859_7: */
/* 		case CS_ISO_8859_8: */
/* 		case CS_ISO_8859_9: */
/* 		case CS_UNICODE: */
		default:
			DEBUG(0, __FUNCTION__"(), charset %s, not supported\n",
			      ias_charset_types[charset]);
			return;
			/* break; */
		}
		value_len = fp[n++];
		DEBUG(4, __FUNCTION__ "(), strlen=%d\n", value_len);
		ASSERT( value_len < 64, return;);
		
		/* Make sure the string is null-terminated */
		fp[n+value_len] = 0x00;
		
		DEBUG(4, "Got string %s\n", fp+n);
		value = irias_new_string_value(fp+n);
		break;
	case IAS_OCT_SEQ:
		value_len = be16_to_cpu(get_unaligned((__u16 *)(fp+n)));
		n += 2;
		
		/* FIXME:should be 1024, but.... */
		DEBUG(0, __FUNCTION__ "():octet sequence:len=%d\n", value_len);
		ASSERT(value_len <= 55, return;);      
		
		value = irias_new_octseq_value(fp+n, value_len);
		break;
	default:
		value = &missing;
		break;
	}
	
	/* Finished, close connection! */
	iriap_disconnect_request(self);

	if (self->confirm)
		self->confirm(IAS_SUCCESS, obj_id, value, self->priv);
}

/*
 * Function iriap_getvaluebyclass_response ()
 *
 *    Send answer back to remote LM-IAS
 * 
 */
void iriap_getvaluebyclass_response(struct iriap_cb *self, __u16 obj_id, 
				    __u8 ret_code, struct ias_value *value)
{
	struct sk_buff *skb;
	int n;
	__u32 tmp_be32, tmp_be16;
	__u8 *fp;

	DEBUG( 4, __FUNCTION__ "()\n");

	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IAS_MAGIC, return;);
	ASSERT( value != NULL, return;);
	ASSERT( value->len <= 1024, return;);

	/* Initialize variables */
	n = 0;

	/* 
	 *  We must adjust the size of the response after the length of the 
	 *  value. We add 9 bytes because of the 6 bytes for the frame and
	 *  max 3 bytes for the value coding.
	 */
	skb = dev_alloc_skb(value->len + LMP_HEADER + LAP_HEADER + 9);
	if (!skb)
		return;

	/* Reserve space for MUX and LAP header */
 	skb_reserve( skb, LMP_HEADER+LAP_HEADER);
	skb_put( skb, 6);
	
	fp = skb->data;

	/* Build frame */
	fp[n++] = GET_VALUE_BY_CLASS | IAP_LST;
	fp[n++] = ret_code;

	/* Insert list length (MSB first) */
	tmp_be16 = __constant_htons(0x0001);
	memcpy(fp+n, &tmp_be16, 2);  n += 2; 

	/* Insert object identifier ( MSB first) */
	tmp_be16 = cpu_to_be16(obj_id);
	memcpy(fp+n, &tmp_be16, 2); n += 2;

	switch(value->type) {
	case IAS_STRING:
		skb_put(skb, 3 + value->len);
		fp[n++] = value->type;
		fp[n++] = 0; /* ASCII */
		fp[n++] = (__u8) value->len;
		memcpy(fp+n, value->t.string, value->len); n+=value->len;
		break;
	case IAS_INTEGER:
		skb_put(skb, 5);
		fp[n++] = value->type;
		
		tmp_be32 = cpu_to_be32(value->t.integer);
		memcpy(fp+n, &tmp_be32, 4); n += 4;
		break;
	case IAS_OCT_SEQ:
		skb_put(skb, 3 + value->len);
		fp[n++] = value->type;

		tmp_be16 = cpu_to_be16(value->len);
		memcpy(fp+n, &tmp_be16, 2); n += 2;
		memcpy(fp+n, value->t.oct_seq, value->len); n+=value->len;
		break;
	case IAS_MISSING:
		DEBUG( 3, __FUNCTION__ ": sending IAS_MISSING\n");
		skb_put( skb, 1);
		fp[n++] = value->type;
		break;

	default:
		DEBUG(0, __FUNCTION__ "(), type not implemented!\n");
		break;
	}
	iriap_do_r_connect_event(self, IAP_CALL_RESPONSE, skb);
}

/*
 * Function iriap_getvaluebyclass_indication (self, skb)
 *
 *    getvaluebyclass is requested from peer LM-IAS
 *
 */
void iriap_getvaluebyclass_indication(struct iriap_cb *self, 
				      struct sk_buff *skb)
{
	__u8 *fp;
	int n;
	int name_len;
	int attr_len;
	char name[64];
	char attr[64];
 	struct ias_object *obj;
	struct ias_attrib *attrib;

	DEBUG( 4, __FUNCTION__ "()\n");

	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IAS_MAGIC, return;);
	ASSERT( skb != NULL, return;);

	fp = skb->data;
	n = 1;

	name_len = fp[n++];
	memcpy( name, fp+n, name_len); n+=name_len;
	name[name_len] = '\0';

	attr_len = fp[n++]; 
	memcpy( attr, fp+n, attr_len); n+=attr_len;
	attr[attr_len] = '\0';

	dev_kfree_skb( skb);

	/* 
	 *  Now, do some advanced parsing! :-) 
	 */
	DEBUG(4, "LM-IAS: Looking up %s: %s\n", name, attr);
	obj = irias_find_object(name);
	
	if ( obj == NULL) {
		DEBUG( 0, "LM-IAS: Object not found\n");
		iriap_getvaluebyclass_response( self, 0x1235, 
						IAS_CLASS_UNKNOWN, &missing);
		return;
	}
	DEBUG(4, "LM-IAS: found %s, id=%d\n", obj->name, obj->id);
	
	attrib = irias_find_attrib( obj, attr);
	if ( attrib == NULL) {
		DEBUG( 0, "LM-IAS: Attribute %s not found\n", attr);
		iriap_getvaluebyclass_response(self, obj->id,
					       IAS_ATTRIB_UNKNOWN, &missing);
		return;
	}
	
	DEBUG(4, "LM-IAS: found %s\n", attrib->name);
	
	/*
	 * We have a match; send the value.
	 */
	iriap_getvaluebyclass_response( self, obj->id, IAS_SUCCESS, 
					attrib->value);

	return;
}

/*
 * Function iriap_send_ack (void)
 *
 *    
 *
 */
void iriap_send_ack( struct iriap_cb *self) 
{
	struct sk_buff *skb;
	__u8 *frame;

	DEBUG( 6, __FUNCTION__ "()\n");

	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IAS_MAGIC, return;);

	skb = dev_alloc_skb( 64);
	if (!skb)
		return;

	/* Reserve space for MUX and LAP header */
 	skb_reserve( skb, 4);
	skb_put( skb, 3);
	frame = skb->data;

	/* Build frame */
	frame[0] = IAP_LST | self->operation;
}

/*
 * Function iriap_connect_confirm (handle, skb)
 *
 *    LSAP connection confirmed!
 *
 */
void iriap_connect_confirm(void *instance, void *sap, struct qos_info *qos, 
			   __u32 max_sdu_size, struct sk_buff *userdata)
{
	struct iriap_cb *self;
	
	self = (struct iriap_cb *) instance;

	ASSERT(self != NULL, return;);
	ASSERT(self->magic == IAS_MAGIC, return;);
	ASSERT(userdata != NULL, return;);
	
	DEBUG(4, __FUNCTION__ "()\n");
	
	/* del_timer( &self->watchdog_timer); */

	iriap_do_client_event(self, IAP_LM_CONNECT_CONFIRM, userdata);
}

/*
 * Function iriap_connect_indication ( handle, skb)
 *
 *    Remote LM-IAS is requesting connection
 *
 */
static void iriap_connect_indication(void *instance, void *sap, 
				     struct qos_info *qos, __u32 max_sdu_size,
				     struct sk_buff *userdata)
{
	struct iriap_cb *self;

	DEBUG( 4, __FUNCTION__ "()\n");

	self = ( struct iriap_cb *) instance;

	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IAS_MAGIC, return;);
	ASSERT( self->mode == IAS_SERVER, return;);

	iriap_do_server_event( self, IAP_LM_CONNECT_INDICATION, userdata);
}
 
/*
 * Function iriap_data_indication (handle, skb)
 *
 *    Receives data from connection identified by handle from IrLMP
 *
 */
static int iriap_data_indication(void *instance, void *sap, 
				 struct sk_buff *skb) 
{
	struct iriap_cb *self;
	__u8  *frame;
	__u8  opcode;
	
	DEBUG( 4, __FUNCTION__ "()\n"); 
	
	self = (struct iriap_cb *) instance;

	ASSERT(self != NULL, return 0;);
	ASSERT(self->magic == IAS_MAGIC, return 0;);

	ASSERT(skb != NULL, return 0;);

	frame = skb->data;
	
	if (self->mode == IAS_SERVER) {
		/* Call server */
		DEBUG(4, __FUNCTION__ "(), Calling server!\n");
		iriap_do_r_connect_event( self, IAP_RECV_F_LST, skb);

		return 0;
	}
	opcode = frame[0];
	if ( ~opcode & 0x80) {
		printk( KERN_ERR "IrIAS multiframe commands or results is "
			"not implemented yet!\n");
		return 0;
	}

	if (~opcode & IAP_ACK) {
		DEBUG(2, __FUNCTION__ "() Got ack frame!\n");
	/* 	return; */
	}

	opcode &= ~IAP_LST; /* Mask away LST bit */
	
	switch(opcode) {
	case GET_INFO_BASE:
		DEBUG( 0, "IrLMP GetInfoBaseDetails not implemented!\n");
		break;
	case GET_VALUE_BY_CLASS:
		DEBUG( 4,"IrLMP GetValueByClass\n");
		
		switch(frame[1]) {
		case IAS_SUCCESS:
			iriap_getvaluebyclass_confirm(self, skb);
			break;
		case IAS_CLASS_UNKNOWN:
			printk(KERN_WARNING "IrIAP No such class!\n");
			/* Finished, close connection! */
			iriap_disconnect_request(self);

			if (self->confirm)
				self->confirm(IAS_CLASS_UNKNOWN, 0, NULL, 
					      self->priv);
			break;
		case IAS_ATTRIB_UNKNOWN:
			printk(KERN_WARNING "IrIAP No such attribute!\n");
		       	/* Finished, close connection! */
			iriap_disconnect_request(self);

			if (self->confirm)
				self->confirm(IAS_CLASS_UNKNOWN, 0, NULL, 
					      self->priv);
			break;
		}
		iriap_do_call_event( self, IAP_RECV_F_LST, skb);

		/*  
		 *  We remove LSAPs used by IrIAS as a client since these
		 *  are more difficult to reuse!  
		 */
		iriap_close( self);
		break;
	default:
		DEBUG(0, __FUNCTION__ "(), Unknown op-code: %02x\n", opcode);
		break;
	}
	return 0;
}

/*
 * Function iriap_call_indication (self, skb)
 *
 *    Received call to server from peer LM-IAS
 *
 */
void iriap_call_indication( struct iriap_cb *self, struct sk_buff *skb)
{
	__u8 *fp;
	__u8  opcode;

	DEBUG( 4, __FUNCTION__ "()\n");

	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IAS_MAGIC, return;);
	ASSERT( skb != NULL, return;);

	fp = skb->data;

	opcode = fp[0];
	if ( ~opcode & 0x80) {
		printk( KERN_ERR "IrIAS multiframe commands or results is "
			"not implemented yet!\n");
		return;
	}
	opcode &= 0x7f; /* Mask away LST bit */
	
	switch( opcode) {
	case GET_INFO_BASE:
		DEBUG( 0, "IrLMP GetInfoBaseDetails not implemented!\n");
		break;
	case GET_VALUE_BY_CLASS:
		iriap_getvaluebyclass_indication( self, skb);
		break;
	}
}

/*
 * Function iriap_watchdog_timer_expired (data)
 *
 *    
 *
 */
void iriap_watchdog_timer_expired( unsigned long data)
{
	struct iriap_cb *self = ( struct iriap_cb *) data;
	
	ASSERT(self != NULL, return;);
	ASSERT(self->magic == IAS_MAGIC, return;);

	DEBUG(0, __FUNCTION__ "() Timeout! closing myself!\n");
	iriap_close( self);
}

#ifdef CONFIG_PROC_FS

static char *ias_value_types[] = {
	"IAS_MISSING",
	"IAS_INTEGER",
	"IAS_OCT_SEQ",
	"IAS_STRING"
};

int irias_proc_read(char *buf, char **start, off_t offset, int len, int unused)
{
	struct ias_object *obj;
	struct ias_attrib *attrib;
	unsigned long flags;

	ASSERT( objects != NULL, return 0;);

	save_flags( flags);
	cli();

	len = 0;

	len += sprintf( buf+len, "LM-IAS Objects:\n");

	/* List all objects */
	obj = (struct ias_object *) hashbin_get_first( objects);
	while ( obj != NULL) {
		ASSERT( obj->magic == IAS_OBJECT_MAGIC, return 0;);

		len += sprintf( buf+len, "name: %s, ", obj->name);
		len += sprintf( buf+len, "id=%d", obj->id);
		len += sprintf( buf+len, "\n");

		/* List all attributes for this object */
		attrib = (struct ias_attrib *) 
			hashbin_get_first( obj->attribs);
		while ( attrib != NULL) {
			ASSERT( attrib->magic == IAS_ATTRIB_MAGIC, return 0;);

			len += sprintf( buf+len, " - Attribute name: \"%s\", ",
 					attrib->name);
			len += sprintf( buf+len, "value[%s]: ", 
					ias_value_types[ attrib->value->type]);
			
			switch( attrib->value->type) {
			case IAS_INTEGER:
				len += sprintf( buf+len, "%d\n", 
						attrib->value->t.integer);
				break;
			case IAS_STRING:
				len += sprintf( buf+len, "\"%s\"\n", 
						attrib->value->t.string);
				break;
			case IAS_OCT_SEQ:
				len += sprintf( buf+len, "octet sequence\n");
				break;
			case IAS_MISSING:
				len += sprintf( buf+len, "missing\n");
				break;
			default:
				DEBUG( 0, __FUNCTION__ 
				       "(), Unknown value type!\n");
				return -1;
			}
			len += sprintf( buf+len, "\n");
			
			attrib = (struct ias_attrib *) 
				hashbin_get_next(obj->attribs);
		}
	        obj = ( struct ias_object *) hashbin_get_next( objects);
 	} 
	restore_flags( flags);

	return len;
}

#endif /* PROC_FS */