[WAN]: Remove broken and unmaintained Sangoma drivers.

The in-kernel Sangoma drivers are both not compiling and marked as BROKEN
since at least kernel 2.6.0.

Sangoma offers out-of-tree drivers, and David Mandelstam told me Sangoma
does no longer maintain the in-kernel drivers and prefers to provide them
as a separate installation package.

This patch therefore removes these drivers.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 2358 deletions

diff --git a/drivers/net/wan/wanpipe_multppp.c b/drivers/net/wan/wanpipe_multppp.c
deleted file mode 100644
index 812a1183c50..00000000000
--- a/drivers/net/wan/wanpipe_multppp.c
+++ /dev/null
@@ -1,2358 +0,0 @@
-/*****************************************************************************
-* wanpipe_multppp.c Multi-Port PPP driver module.
-*
-* Authors: 	Nenad Corbic <ncorbic@sangoma.com>
-*
-* Copyright:	(c) 1995-2001 Sangoma Technologies Inc.
-*
-*		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.
-* ============================================================================
-* Dec 15 2000   Updated for 2.4.X kernel
-* Nov 15 2000   Fixed the SyncPPP support for kernels 2.2.16 and higher.
-*   		The pppstruct has changed.
-* Jul 13 2000	Using the kernel Syncppp module on top of RAW Wanpipe CHDLC
-*  		module.
-*****************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h>	/* printk(), and other useful stuff */
-#include <linux/stddef.h>	/* offsetof(), etc. */
-#include <linux/errno.h>	/* return codes */
-#include <linux/string.h>	/* inline memset(), etc. */
-#include <linux/slab.h>	/* kmalloc(), kfree() */
-#include <linux/wanrouter.h>	/* WAN router definitions */
-#include <linux/wanpipe.h>	/* WANPIPE common user API definitions */
-#include <linux/if_arp.h>	/* ARPHRD_* defines */
-#include <linux/jiffies.h>	/* time_after() macro */
-
-#include <linux/in.h>		/* sockaddr_in */
-#include <linux/inet.h>	
-#include <linux/if.h>
-#include <asm/byteorder.h>	/* htons(), etc. */
-#include <linux/sdlapci.h>
-#include <asm/io.h>
-
-#include <linux/sdla_chdlc.h>		/* CHDLC firmware API definitions */
-#include <linux/sdla_asy.h>           	/* CHDLC (async) API definitions */
-
-#include <linux/if_wanpipe_common.h>    /* Socket Driver common area */
-#include <linux/if_wanpipe.h>		
-
-
-#include <linux/inetdevice.h>
-#include <asm/uaccess.h>
-
-#include <net/syncppp.h>
-
-
-/****** Defines & Macros ****************************************************/
-
-#ifdef	_DEBUG_
-#define	STATIC
-#else
-#define	STATIC		static
-#endif
-
-/* reasons for enabling the timer interrupt on the adapter */
-#define TMR_INT_ENABLED_UDP   	0x01
-#define TMR_INT_ENABLED_UPDATE	0x02
-#define TMR_INT_ENABLED_CONFIG  0x04
- 
-#define	CHDLC_DFLT_DATA_LEN	1500		/* default MTU */
-#define CHDLC_HDR_LEN		1
-
-#define IFF_POINTTOPOINT 0x10
-
-#define CHDLC_API 0x01
-
-#define PORT(x)   (x == 0 ? "PRIMARY" : "SECONDARY" )
-#define MAX_BH_BUFF	10
-
-#define CRC_LENGTH 	2 
-#define PPP_HEADER_LEN 	4
- 
-/******Data Structures*****************************************************/
-
-/* This structure is placed in the private data area of the device structure.
- * The card structure used to occupy the private area but now the following 
- * structure will incorporate the card structure along with CHDLC specific data
- */
-
-typedef struct chdlc_private_area
-{
-	void *if_ptr;				/* General Pointer used by SPPP */
-	wanpipe_common_t common;
-	sdla_t		*card;
-	int 		TracingEnabled;		/* For enabling Tracing */
-	unsigned long 	curr_trace_addr;	/* Used for Tracing */
-	unsigned long 	start_trace_addr;
-	unsigned long 	end_trace_addr;
-	unsigned long 	base_addr_trace_buffer;
-	unsigned long 	end_addr_trace_buffer;
-	unsigned short 	number_trace_elements;
-	unsigned  	available_buffer_space;
-	unsigned long 	router_start_time;
-	unsigned char 	route_status;
-	unsigned char 	route_removed;
-	unsigned long 	tick_counter;		/* For 5s timeout counter */
-	unsigned long 	router_up_time;
-        u32             IP_address;		/* IP addressing */
-        u32             IP_netmask;
-	unsigned char  mc;			/* Mulitcast support on/off */
-	unsigned short udp_pkt_lgth;		/* udp packet processing */
-	char udp_pkt_src;
-	char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
-	unsigned short timer_int_enabled;
-	char update_comms_stats;		/* updating comms stats */
-
-	//FIXME: add driver stats as per frame relay!
-
-} chdlc_private_area_t;
-
-/* Route Status options */
-#define NO_ROUTE	0x00
-#define ADD_ROUTE	0x01
-#define ROUTE_ADDED	0x02
-#define REMOVE_ROUTE	0x03
-
-
-/* variable for keeping track of enabling/disabling FT1 monitor status */
-static int rCount = 0;
-
-/* variable for tracking how many interfaces to open for WANPIPE on the
-   two ports */
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/****** Function Prototypes *************************************************/
-/* WAN link driver entry points. These are called by the WAN router module. */
-static int update(struct wan_device* wandev);
-static int new_if(struct wan_device* wandev, struct net_device* dev,
-		  wanif_conf_t* conf);
-static int del_if(struct wan_device* wandev, struct net_device* dev);
-
-/* Network device interface */
-static int if_init(struct net_device* dev);
-static int if_open(struct net_device* dev);
-static int if_close(struct net_device* dev);
-static int if_send(struct sk_buff* skb, struct net_device* dev);
-static struct net_device_stats* if_stats(struct net_device* dev);
-
-static void if_tx_timeout(struct net_device *dev);
-
-/* CHDLC Firmware interface functions */
-static int chdlc_configure 	(sdla_t* card, void* data);
-static int chdlc_comm_enable 	(sdla_t* card);
-static int chdlc_comm_disable 	(sdla_t* card);
-static int chdlc_read_version 	(sdla_t* card, char* str);
-static int chdlc_set_intr_mode 	(sdla_t* card, unsigned mode);
-static int chdlc_send (sdla_t* card, void* data, unsigned len);
-static int chdlc_read_comm_err_stats (sdla_t* card);
-static int chdlc_read_op_stats (sdla_t* card);
-static int config_chdlc (sdla_t *card);
-
-
-/* Miscellaneous CHDLC Functions */
-static int set_chdlc_config (sdla_t* card);
-static void init_chdlc_tx_rx_buff(sdla_t* card, struct net_device *dev);
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb);
-static int process_chdlc_exception(sdla_t *card);
-static int process_global_exception(sdla_t *card);
-static int update_comms_stats(sdla_t* card,
-        chdlc_private_area_t* chdlc_priv_area);
-static void port_set_state (sdla_t *card, int);
-
-/* Interrupt handlers */
-static void wsppp_isr (sdla_t* card);
-static void rx_intr (sdla_t* card);
-static void timer_intr(sdla_t *);
-
-/* Miscellaneous functions */
-static int reply_udp( unsigned char *data, unsigned int mbox_len );
-static int intr_test( sdla_t* card);
-static int udp_pkt_type( struct sk_buff *skb , sdla_t* card);
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
-			      struct sk_buff *skb, struct net_device* dev,
-			      chdlc_private_area_t* chdlc_priv_area);
-static int process_udp_mgmt_pkt(sdla_t* card, struct net_device* dev,  
-				chdlc_private_area_t* chdlc_priv_area);
-static unsigned short calc_checksum (char *, int);
-static void s508_lock (sdla_t *card, unsigned long *smp_flags);
-static void s508_unlock (sdla_t *card, unsigned long *smp_flags);
-static void send_ppp_term_request(struct net_device *dev);
-
-
-static int  Intr_test_counter;
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * Cisco HDLC protocol initialization routine.
- *
- * This routine is called by the main WANPIPE module during setup.  At this
- * point adapter is completely initialized and firmware is running.
- *  o read firmware version (to make sure it's alive)
- *  o configure adapter
- *  o initialize protocol-specific fields of the adapter data space.
- *
- * Return:	0	o.k.
- *		< 0	failure.
- */
-int wsppp_init (sdla_t* card, wandev_conf_t* conf)
-{
-	unsigned char port_num;
-	int err;
-	unsigned long max_permitted_baud = 0;
-	SHARED_MEMORY_INFO_STRUCT *flags;
-
-	union
-		{
-		char str[80];
-		} u;
-	volatile CHDLC_MAILBOX_STRUCT* mb;
-	CHDLC_MAILBOX_STRUCT* mb1;
-	unsigned long timeout;
-
-	/* Verify configuration ID */
-	if (conf->config_id != WANCONFIG_MPPP) {
-		printk(KERN_INFO "%s: invalid configuration ID %u!\n",
-				  card->devname, conf->config_id);
-		return -EINVAL;
-	}
-
-	/* Find out which Port to use */
-	if ((conf->comm_port == WANOPT_PRI) || (conf->comm_port == WANOPT_SEC)){
-		if (card->next){
-
-			if (conf->comm_port != card->next->u.c.comm_port){
-				card->u.c.comm_port = conf->comm_port;
-			}else{
-				printk(KERN_ERR "%s: ERROR - %s port used!\n",
-        		        	card->wandev.name, PORT(conf->comm_port));
-				return -EINVAL;
-			}
-		}else{
-			card->u.c.comm_port = conf->comm_port;
-		}
-	}else{
-		printk(KERN_ERR "%s: ERROR - Invalid Port Selected!\n",
-                			card->wandev.name);
-		return -EINVAL;
-	}
-	
-
-	/* Initialize protocol-specific fields */
-	if(card->hw.type != SDLA_S514){
-
-		if (card->u.c.comm_port == WANOPT_PRI){	
-			card->mbox  = (void *) card->hw.dpmbase;
-		}else{
-			card->mbox  = (void *) card->hw.dpmbase + 
-				SEC_BASE_ADDR_MB_STRUCT - PRI_BASE_ADDR_MB_STRUCT;
-		}	
-	}else{ 
-		/* for a S514 adapter, set a pointer to the actual mailbox in the */
-		/* allocated virtual memory area */
-		if (card->u.c.comm_port == WANOPT_PRI){
-			card->mbox = (void *) card->hw.dpmbase + PRI_BASE_ADDR_MB_STRUCT;
-		}else{
-			card->mbox = (void *) card->hw.dpmbase + SEC_BASE_ADDR_MB_STRUCT;
-		}	
-	}
-
-	mb = mb1 = card->mbox;
-
-	if (!card->configured){
-
-		/* The board will place an 'I' in the return code to indicate that it is
-	   	ready to accept commands.  We expect this to be completed in less
-           	than 1 second. */
-
-		timeout = jiffies + 1 * HZ;
-		while (mb->return_code != 'I')	/* Wait 1s for board to initialize */
-			if (time_after(jiffies, timeout)) break;
-
-		if (mb->return_code != 'I') {
-			printk(KERN_INFO
-				"%s: Initialization not completed by adapter\n",
-				card->devname);
-			printk(KERN_INFO "Please contact Sangoma representative.\n");
-			return -EIO;
-		}
-	}
-
-	/* Read firmware version.  Note that when adapter initializes, it
-	 * clears the mailbox, so it may appear that the first command was
-	 * executed successfully when in fact it was merely erased. To work
-	 * around this, we execute the first command twice.
-	 */
-
-	if (chdlc_read_version(card, u.str))
-		return -EIO;
-
-	printk(KERN_INFO "%s: Running Raw CHDLC firmware v%s\n" 
-			 "%s: for Multi-Port PPP protocol.\n",
-			card->devname,u.str,card->devname); 
-
-	card->isr			= &wsppp_isr;
-	card->poll			= NULL;
-	card->exec			= NULL;
-	card->wandev.update		= &update;
- 	card->wandev.new_if		= &new_if;
-	card->wandev.del_if		= &del_if;
-	card->wandev.udp_port   	= conf->udp_port;
-
-	card->wandev.new_if_cnt = 0;
-
-	/* reset the number of times the 'update()' proc has been called */
-	card->u.c.update_call_count = 0;
-	
-	card->wandev.ttl = conf->ttl;
-	card->wandev.interface = conf->interface; 
-
-	if ((card->u.c.comm_port == WANOPT_SEC && conf->interface == WANOPT_V35)&&
-	    card->hw.type != SDLA_S514){
-		printk(KERN_INFO "%s: ERROR - V35 Interface not supported on S508 %s port \n",
-			card->devname, PORT(card->u.c.comm_port));
-		return -EIO;
-	}
-
-
-	card->wandev.clocking = conf->clocking;
-
-	port_num = card->u.c.comm_port;
-
-	/* Setup Port Bps */
-
-	if(card->wandev.clocking) {
-		if((port_num == WANOPT_PRI) || card->u.c.receive_only) {
-			/* For Primary Port 0 */
-               		max_permitted_baud =
-				(card->hw.type == SDLA_S514) ?
-				PRI_MAX_BAUD_RATE_S514 : 
-				PRI_MAX_BAUD_RATE_S508;
-		}
-		else if(port_num == WANOPT_SEC) {
-			/* For Secondary Port 1 */
-                        max_permitted_baud =
-                               (card->hw.type == SDLA_S514) ?
-                                SEC_MAX_BAUD_RATE_S514 :
-                                SEC_MAX_BAUD_RATE_S508;
-                        }
-  
-			if(conf->bps > max_permitted_baud) {
-				conf->bps = max_permitted_baud;
-				printk(KERN_INFO "%s: Baud too high!\n",
-					card->wandev.name);
- 				printk(KERN_INFO "%s: Baud rate set to %lu bps\n", 
-					card->wandev.name, max_permitted_baud);
-			}
-                             
-			card->wandev.bps = conf->bps;
-	}else{
-        	card->wandev.bps = 0;
-  	}
-
-	/* Setup the Port MTU */
-	if((port_num == WANOPT_PRI) || card->u.c.receive_only) {
-
-		/* For Primary Port 0 */
-		card->wandev.mtu =
-			(conf->mtu >= MIN_LGTH_CHDLC_DATA_CFG) ?
-			min_t(unsigned int, conf->mtu, PRI_MAX_NO_DATA_BYTES_IN_FRAME) :
-			CHDLC_DFLT_DATA_LEN;
-	} else if(port_num == WANOPT_SEC) { 
-		/* For Secondary Port 1 */
-		card->wandev.mtu =
-			(conf->mtu >= MIN_LGTH_CHDLC_DATA_CFG) ?
-			min_t(unsigned int, conf->mtu, SEC_MAX_NO_DATA_BYTES_IN_FRAME) :
-			CHDLC_DFLT_DATA_LEN;
-	}
-
-	/* Add on a PPP Header */
-	card->wandev.mtu += PPP_HEADER_LEN;
-
-	/* Set up the interrupt status area */
-	/* Read the CHDLC Configuration and obtain: 
-	 *	Ptr to shared memory infor struct
-         * Use this pointer to calculate the value of card->u.c.flags !
- 	 */
-	mb1->buffer_length = 0;
-	mb1->command = READ_CHDLC_CONFIGURATION;
-	err = sdla_exec(mb1) ? mb1->return_code : CMD_TIMEOUT;
-	if(err != COMMAND_OK) {
-		clear_bit(1, (void*)&card->wandev.critical);
-
-                if(card->hw.type != SDLA_S514)
-                	enable_irq(card->hw.irq);
-
-		chdlc_error(card, err, mb1);
-		return -EIO;
-	}
-
-	if(card->hw.type == SDLA_S514){
-               	card->u.c.flags = (void *)(card->hw.dpmbase +
-               		(((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
-			ptr_shared_mem_info_struct));
-        }else{
-                card->u.c.flags = (void *)(card->hw.dpmbase +
-                        (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
-			ptr_shared_mem_info_struct % SDLA_WINDOWSIZE));
-	}
-	
-	flags = card->u.c.flags;
-	
-	/* This is for the ports link state */
-	card->wandev.state = WAN_DUALPORT;
-	card->u.c.state = WAN_DISCONNECTED;
-
-
-	if (!card->wandev.piggyback){
-		err = intr_test(card);
-
-		if(err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) { 
-			printk(KERN_ERR "%s: Interrupt test failed (%i)\n",
-					card->devname, Intr_test_counter);
-			printk(KERN_ERR "%s: Please choose another interrupt\n",
-					card->devname);
-			return  -EIO;
-		}
-			
-		printk(KERN_INFO "%s: Interrupt test passed (%i)\n", 
-				card->devname, Intr_test_counter);
-	}
-
-
-	if (chdlc_set_intr_mode(card, APP_INT_ON_TIMER)){
-		printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
-				card->devname);
-		return -EIO;	
-        }
-	
-	/* Mask the Timer interrupt */
-	flags->interrupt_info_struct.interrupt_permission &= 
-		~APP_INT_ON_TIMER;
-
-	printk(KERN_INFO "\n");
-
-	return 0;
-}
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Update device status & statistics
- * This procedure is called when updating the PROC file system and returns
- * various communications statistics. These statistics are accumulated from 3 
- * different locations:
- * 	1) The 'if_stats' recorded for the device.
- * 	2) Communication error statistics on the adapter.
- *      3) CHDLC operational statistics on the adapter.
- * The board level statistics are read during a timer interrupt. Note that we 
- * read the error and operational statistics during consecitive timer ticks so
- * as to minimize the time that we are inside the interrupt handler.
- *
- */
-static int update(struct wan_device* wandev)
-{
-	sdla_t* card = wandev->private;
- 	struct net_device* dev;
-        volatile chdlc_private_area_t* chdlc_priv_area;
-        SHARED_MEMORY_INFO_STRUCT *flags;
-	unsigned long timeout;
-
-	/* sanity checks */
-	if((wandev == NULL) || (wandev->private == NULL))
-		return -EFAULT;
-	
-	if(wandev->state == WAN_UNCONFIGURED)
-		return -ENODEV;
-
-	/* more sanity checks */
-        if(!card->u.c.flags)
-                return -ENODEV;
-
-	if((dev=card->wandev.dev) == NULL)
-		return -ENODEV;
-
-	if((chdlc_priv_area=dev->priv) == NULL)
-		return -ENODEV;
-
-      	flags = card->u.c.flags;
-
-       	if(chdlc_priv_area->update_comms_stats){
-		return -EAGAIN;
-	}
-			
-	/* we will need 2 timer interrupts to complete the */
-	/* reading of the statistics */
-	chdlc_priv_area->update_comms_stats = 2;
-       	flags->interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
-	chdlc_priv_area->timer_int_enabled = TMR_INT_ENABLED_UPDATE;
-  
-	/* wait a maximum of 1 second for the statistics to be updated */ 
-        timeout = jiffies + 1 * HZ;
-        for(;;) {
-		if(chdlc_priv_area->update_comms_stats == 0)
-			break;
-                if (time_after(jiffies, timeout)){
-    			chdlc_priv_area->update_comms_stats = 0;
- 			chdlc_priv_area->timer_int_enabled &=
-				~TMR_INT_ENABLED_UPDATE; 
- 			return -EAGAIN;
-		}
-        }
-
-	return 0;
-}
-
-
-/*============================================================================
- * Create new logical channel.
- * This routine is called by the router when ROUTER_IFNEW IOCTL is being
- * handled.
- * o parse media- and hardware-specific configuration
- * o make sure that a new channel can be created
- * o allocate resources, if necessary
- * o prepare network device structure for registaration.
- *
- * Return:	0	o.k.
- *		< 0	failure (channel will not be created)
- */
-static int new_if(struct wan_device* wandev, struct net_device* pdev,
-		  wanif_conf_t* conf)
-{
-
-	struct ppp_device *pppdev = (struct ppp_device *)pdev;
-	struct net_device *dev = NULL;
-	struct sppp *sp;
-	sdla_t* card = wandev->private;
-	chdlc_private_area_t* chdlc_priv_area;
-	
-	if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
-		printk(KERN_INFO "%s: invalid interface name!\n",
-			card->devname);
-		return -EINVAL;
-	}
-		
-	/* allocate and initialize private data */
-	chdlc_priv_area = kmalloc(sizeof(chdlc_private_area_t), GFP_KERNEL);
-	
-	if(chdlc_priv_area == NULL) 
-		return -ENOMEM;
-
-	memset(chdlc_priv_area, 0, sizeof(chdlc_private_area_t));
-
-	chdlc_priv_area->card = card; 
-
-	/* initialize data */
-	strcpy(card->u.c.if_name, conf->name);
-
-	if(card->wandev.new_if_cnt > 0) {
-                kfree(chdlc_priv_area);
-		return -EEXIST;
-	}
-
-	card->wandev.new_if_cnt++;
-
-	chdlc_priv_area->TracingEnabled = 0;
-
-	//We don't need this any more
-	chdlc_priv_area->route_status = NO_ROUTE;
-	chdlc_priv_area->route_removed = 0;
-
-	printk(KERN_INFO "%s: Firmware running in HDLC STREAMING Mode\n",
-		wandev->name);
-	
-	/* Setup wanpipe as a router (WANPIPE) or as an API */
-	if( strcmp(conf->usedby, "WANPIPE") == 0) {
-		printk(KERN_INFO "%s: Driver running in WANPIPE mode!\n",
-			wandev->name);
-		card->u.c.usedby = WANPIPE;
-	} else {
-		printk(KERN_INFO 
-			"%s: API Mode is not supported for SyncPPP!\n",
-			wandev->name);
-		kfree(chdlc_priv_area);
-		return -EINVAL;
-	}
-
-	/* Get Multicast Information */
-	chdlc_priv_area->mc = conf->mc;
-
-
-	chdlc_priv_area->if_ptr = pppdev;
-
-	/* prepare network device data space for registration */
-
-	strcpy(dev->name,card->u.c.if_name);
-
-	/* Attach PPP protocol layer to pppdev
-	 * The sppp_attach() will initilize the dev structure
-         * and setup ppp layer protocols.
-         * All we have to do is to bind in:
-         *        if_open(), if_close(), if_send() and get_stats() functions.
-         */
-	sppp_attach(pppdev);
-	dev = pppdev->dev;
-	sp = &pppdev->sppp;
-	
-	/* Enable PPP Debugging */
-	// FIXME Fix this up somehow
-	//sp->pp_flags |= PP_DEBUG; 	
-	sp->pp_flags &= ~PP_CISCO;
-
-	dev->init = &if_init;
-	dev->priv = chdlc_priv_area;
-	
-	return 0;
-}
-
-
-
-
-/*============================================================================
- * Delete logical channel.
- */
-static int del_if(struct wan_device* wandev, struct net_device* dev)
-{
-	chdlc_private_area_t *chdlc_priv_area = dev->priv;
-	sdla_t *card = chdlc_priv_area->card;
-	unsigned long smp_lock;
-	
-	/* Detach the PPP layer */
-	printk(KERN_INFO "%s: Detaching SyncPPP Module from %s\n",
-			wandev->name,dev->name);
-
-	lock_adapter_irq(&wandev->lock,&smp_lock);
-
-	sppp_detach(dev);
-	chdlc_priv_area->if_ptr=NULL;
-	
-	chdlc_set_intr_mode(card, 0);
-	if (card->u.c.comm_enabled)
-		chdlc_comm_disable(card);
-	unlock_adapter_irq(&wandev->lock,&smp_lock);
-	
-	port_set_state(card, WAN_DISCONNECTED);
-
-	return 0;
-}
-
-
-/****** Network Device Interface ********************************************/
-
-/*============================================================================
- * Initialize Linux network interface.
- *
- * This routine is called only once for each interface, during Linux network
- * interface registration.  Returning anything but zero will fail interface
- * registration.
- */
-static int if_init(struct net_device* dev)
-{
-	chdlc_private_area_t* chdlc_priv_area = dev->priv;
-	sdla_t* card = chdlc_priv_area->card;
-	struct wan_device* wandev = &card->wandev;
-	
-	/* NOTE: Most of the dev initialization was
-         *       done in sppp_attach(), called by new_if() 
-         *       function. All we have to do here is
-         *       to link four major routines below. 
-         */
-
-	/* Initialize device driver entry points */
-	dev->open		= &if_open;
-	dev->stop		= &if_close;
-	dev->hard_start_xmit	= &if_send;
-	dev->get_stats		= &if_stats;
-	dev->tx_timeout		= &if_tx_timeout;
-	dev->watchdog_timeo	= TX_TIMEOUT;
-
-
-	/* Initialize hardware parameters */
-	dev->irq	= wandev->irq;
-	dev->dma	= wandev->dma;
-	dev->base_addr	= wandev->ioport;
-	dev->mem_start	= wandev->maddr;
-	dev->mem_end	= wandev->maddr + wandev->msize - 1;
-
-	/* Set transmit buffer queue length 
-         * If we over fill this queue the packets will
-         * be droped by the kernel.
-         * sppp_attach() sets this to 10, but
-         * 100 will give us more room at low speeds.
-	 */
-        dev->tx_queue_len = 100;
-   
-	return 0;
-}
-
-
-/*============================================================================
- * Handle transmit timeout event from netif watchdog
- */
-static void if_tx_timeout(struct net_device *dev)
-{
-    	chdlc_private_area_t* chan = dev->priv;
-	sdla_t *card = chan->card;
-	
-	/* If our device stays busy for at least 5 seconds then we will
-	 * kick start the device by making dev->tbusy = 0.  We expect
-	 * that our device never stays busy more than 5 seconds. So this                 
-	 * is only used as a last resort.
-	 */
-
-	++card->wandev.stats.collisions;
-
-	printk (KERN_INFO "%s: Transmit timed out on %s\n", card->devname,dev->name);
-	netif_wake_queue (dev);
-}
-
-
-/*============================================================================
- * Open network interface.
- * o enable communications and interrupts.
- * o prevent module from unloading by incrementing use count
- *
- * Return 0 if O.k. or errno.
- */
-static int if_open(struct net_device* dev)
-{
-	chdlc_private_area_t* chdlc_priv_area = dev->priv;
-	sdla_t* card = chdlc_priv_area->card;
-	struct timeval tv;
-	SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
-	/* Only one open per interface is allowed */
-	if (netif_running(dev))
-		return -EBUSY;
-
-	/* Start PPP Layer */
-	if (sppp_open(dev)){
-		return -EIO;
-	}
-
-	do_gettimeofday(&tv);
-	chdlc_priv_area->router_start_time = tv.tv_sec;
- 
-	netif_start_queue(dev);
-	
-	wanpipe_open(card);
-
-	chdlc_priv_area->timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
-	flags->interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
-	return 0;
-}
-
-/*============================================================================
- * Close network interface.
- * o if this is the last close, then disable communications and interrupts.
- * o reset flags.
- */
-static int if_close(struct net_device* dev)
-{
-	chdlc_private_area_t* chdlc_priv_area = dev->priv;
-	sdla_t* card = chdlc_priv_area->card;
-
-	/* Stop the PPP Layer */
-	sppp_close(dev);
-	netif_stop_queue(dev);
-
-	wanpipe_close(card);
-	
-	return 0;
-}
-
-/*============================================================================
- * Send a packet on a network interface.
- * o set tbusy flag (marks start of the transmission) to block a timer-based
- *   transmit from overlapping.
- * o check link state. If link is not up, then drop the packet.
- * o execute adapter send command.
- * o free socket buffer
- *
- * Return:	0	complete (socket buffer must be freed)
- *		non-0	packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- *    bottom half" (with interrupts enabled).
- * 2. Setting tbusy flag will inhibit further transmit requests from the
- *    protocol stack and can be used for flow control with protocol layer.
- */
-static int if_send(struct sk_buff* skb, struct net_device* dev)
-{
-	chdlc_private_area_t *chdlc_priv_area = dev->priv;
-	sdla_t *card = chdlc_priv_area->card;
-	SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-	INTERRUPT_INFORMATION_STRUCT *chdlc_int = &flags->interrupt_info_struct;
-	int udp_type = 0;
-	unsigned long smp_flags;
-	int err=0;
-
-	netif_stop_queue(dev);
-
-	
-	if (skb == NULL){
-		/* If we get here, some higher layer thinks we've missed an
-		 * tx-done interrupt.
-		 */
-		printk(KERN_INFO "%s: Received NULL skb buffer! interface %s got kicked!\n",
-			card->devname, dev->name);
-
-		netif_wake_queue(dev);
-		return 0;
-	}
-
-   	if (ntohs(skb->protocol) != htons(PVC_PROT)){
-		/* check the udp packet type */
-		
-		udp_type = udp_pkt_type(skb, card);
-		if (udp_type == UDP_CPIPE_TYPE){
-                        if(store_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb, dev,
-                                chdlc_priv_area)){
-				chdlc_int->interrupt_permission |=
-					APP_INT_ON_TIMER;
-			}
-			netif_start_queue(dev);
-			return 0;
-		}
-        }
-
-	/* Lock the 508 Card: SMP is supported */
-      	if(card->hw.type != SDLA_S514){
-		s508_lock(card,&smp_flags);
-	} 
-
-    	if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)){
-	
-		printk(KERN_INFO "%s: Critical in if_send: %lx\n",
-					card->wandev.name,card->wandev.critical);
-                ++card->wandev.stats.tx_dropped;
-		netif_start_queue(dev);
-		goto if_send_crit_exit;
-	}
-
-	if (card->wandev.state != WAN_CONNECTED){
-		++card->wandev.stats.tx_dropped;
-		netif_start_queue(dev);
-		goto if_send_crit_exit;
-	}
-	
-	if (chdlc_send(card, skb->data, skb->len)){
-		netif_stop_queue(dev);
-
-	}else{
-		++card->wandev.stats.tx_packets;
-       		card->wandev.stats.tx_bytes += skb->len;
-		dev->trans_start = jiffies;
-		netif_start_queue(dev);
-	}	
-
-if_send_crit_exit:
-	if (!(err=netif_queue_stopped(dev))){
-                dev_kfree_skb_any(skb);
-	}else{
-		chdlc_priv_area->tick_counter = jiffies;
-		chdlc_int->interrupt_permission |= APP_INT_ON_TX_FRAME;
-	}
-
-	clear_bit(SEND_CRIT, (void*)&card->wandev.critical);
-	if(card->hw.type != SDLA_S514){
-		s508_unlock(card,&smp_flags);
-	}
-
-	return err;
-}
-
-
-/*============================================================================
- * Reply to UDP Management system.
- * Return length of reply.
- */
-static int reply_udp( unsigned char *data, unsigned int mbox_len )
-{
-
-	unsigned short len, udp_length, temp, ip_length;
-	unsigned long ip_temp;
-	int even_bound = 0;
-  	chdlc_udp_pkt_t *c_udp_pkt = (chdlc_udp_pkt_t *)data;
-	 
-	/* Set length of packet */
-	len = sizeof(ip_pkt_t)+ 
-	      sizeof(udp_pkt_t)+
-	      sizeof(wp_mgmt_t)+
-	      sizeof(cblock_t)+
-	      sizeof(trace_info_t)+ 
-	      mbox_len;
-
-	/* fill in UDP reply */
-	c_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
-   
-	/* fill in UDP length */
-	udp_length = sizeof(udp_pkt_t)+ 
-		     sizeof(wp_mgmt_t)+
-		     sizeof(cblock_t)+
-	             sizeof(trace_info_t)+
-		     mbox_len; 
-
- 	/* put it on an even boundary */
-	if ( udp_length & 0x0001 ) {
-		udp_length += 1;
-		len += 1;
-		even_bound = 1;
-	}  
-
-	temp = (udp_length<<8)|(udp_length>>8);
-	c_udp_pkt->udp_pkt.udp_length = temp;
-		 
-	/* swap UDP ports */
-	temp = c_udp_pkt->udp_pkt.udp_src_port;
-	c_udp_pkt->udp_pkt.udp_src_port = 
-			c_udp_pkt->udp_pkt.udp_dst_port; 
-	c_udp_pkt->udp_pkt.udp_dst_port = temp;
-
-	/* add UDP pseudo header */
-	temp = 0x1100;
-	*((unsigned short *)(c_udp_pkt->data+mbox_len+even_bound)) = temp;	
-	temp = (udp_length<<8)|(udp_length>>8);
-	*((unsigned short *)(c_udp_pkt->data+mbox_len+even_bound+2)) = temp;
-
-		 
-	/* calculate UDP checksum */
-	c_udp_pkt->udp_pkt.udp_checksum = 0;
-	c_udp_pkt->udp_pkt.udp_checksum = calc_checksum(&data[UDP_OFFSET],udp_length+UDP_OFFSET);
-
-	/* fill in IP length */
-	ip_length = len;
-	temp = (ip_length<<8)|(ip_length>>8);
-	c_udp_pkt->ip_pkt.total_length = temp;
-  
-	/* swap IP addresses */
-	ip_temp = c_udp_pkt->ip_pkt.ip_src_address;
-	c_udp_pkt->ip_pkt.ip_src_address = c_udp_pkt->ip_pkt.ip_dst_address;
-	c_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
-
-	/* fill in IP checksum */
-	c_udp_pkt->ip_pkt.hdr_checksum = 0;
-	c_udp_pkt->ip_pkt.hdr_checksum = calc_checksum(data,sizeof(ip_pkt_t));
-
-	return len;
-
-} /* reply_udp */
-
-unsigned short calc_checksum (char *data, int len)
-{
-	unsigned short temp; 
-	unsigned long sum=0;
-	int i;
-
-	for( i = 0; i <len; i+=2 ) {
-		memcpy(&temp,&data[i],2);
-		sum += (unsigned long)temp;
-	}
-
-	while (sum >> 16 ) {
-		sum = (sum & 0xffffUL) + (sum >> 16);
-	}
-
-	temp = (unsigned short)sum;
-	temp = ~temp;
-
-	if( temp == 0 ) 
-		temp = 0xffff;
-
-	return temp;	
-}
-
-
-/*============================================================================
- * Get ethernet-style interface statistics.
- * Return a pointer to struct enet_statistics.
- */
-static struct net_device_stats* if_stats(struct net_device* dev)
-{
-	sdla_t *my_card;
-	chdlc_private_area_t* chdlc_priv_area;
-
-	/* Shutdown bug fix. In del_if() we kill
-         * dev->priv pointer. This function, gets
-         * called after del_if(), thus check
-         * if pointer has been deleted */
-	if ((chdlc_priv_area=dev->priv) == NULL)
-		return NULL;
-
-	my_card = chdlc_priv_area->card;
-	return &my_card->wandev.stats; 
-}
-
-
-/****** Cisco HDLC Firmware Interface Functions *******************************/
-
-/*============================================================================
- * Read firmware code version.
- *	Put code version as ASCII string in str. 
- */
-static int chdlc_read_version (sdla_t* card, char* str)
-{
-	CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-	int len;
-	char err;
-	mb->buffer_length = 0;
-	mb->command = READ_CHDLC_CODE_VERSION;
-	err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
-	if(err != COMMAND_OK) {
-		chdlc_error(card,err,mb);
-	}
-	else if (str) {  /* is not null */
-		len = mb->buffer_length;
-		memcpy(str, mb->data, len);
-		str[len] = '\0';
-	}
-	return (err);
-}
-
-/*-----------------------------------------------------------------------------
- *  Configure CHDLC firmware.
- */
-static int chdlc_configure (sdla_t* card, void* data)
-{
-	int err;
-	CHDLC_MAILBOX_STRUCT *mailbox = card->mbox;
-	int data_length = sizeof(CHDLC_CONFIGURATION_STRUCT);
-	
-	mailbox->buffer_length = data_length;  
-	memcpy(mailbox->data, data, data_length);
-	mailbox->command = SET_CHDLC_CONFIGURATION;
-	err = sdla_exec(mailbox) ? mailbox->return_code : CMD_TIMEOUT;
-	
-	if (err != COMMAND_OK) chdlc_error (card, err, mailbox);
-                           
-	return err;
-}
-
-
-/*============================================================================
- * Set interrupt mode -- HDLC Version.
- */
-
-static int chdlc_set_intr_mode (sdla_t* card, unsigned mode)
-{
-	CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-	CHDLC_INT_TRIGGERS_STRUCT* int_data =
-		 (CHDLC_INT_TRIGGERS_STRUCT *)mb->data;
-	int err;
-
-	int_data->CHDLC_interrupt_triggers 	= mode;
-	int_data->IRQ				= card->hw.irq;
-	int_data->interrupt_timer               = 1;
-   
-	mb->buffer_length = sizeof(CHDLC_INT_TRIGGERS_STRUCT);
-	mb->command = SET_CHDLC_INTERRUPT_TRIGGERS;
-	err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-	if (err != COMMAND_OK)
-		chdlc_error (card, err, mb);
-	return err;
-}
-
-
-/*============================================================================
- * Enable communications.
- */
-
-static int chdlc_comm_enable (sdla_t* card)
-{
-	int err;
-	CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
-	mb->buffer_length = 0;
-	mb->command = ENABLE_CHDLC_COMMUNICATIONS;
-	err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-	if (err != COMMAND_OK)
-		chdlc_error(card, err, mb);
-	else
-		card->u.c.comm_enabled=1;
-
-	return err;
-}
-
-/*============================================================================
- * Disable communications and Drop the Modem lines (DCD and RTS).
- */
-static int chdlc_comm_disable (sdla_t* card)
-{
-	int err;
-	CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
-	mb->buffer_length = 0;
-	mb->command = DISABLE_CHDLC_COMMUNICATIONS;
-	err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-	if (err != COMMAND_OK)
-		chdlc_error(card,err,mb);
-
-	return err;
-}
-
-/*============================================================================
- * Read communication error statistics.
- */
-static int chdlc_read_comm_err_stats (sdla_t* card)
-{
-        int err;
-        CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
-        mb->buffer_length = 0;
-        mb->command = READ_COMMS_ERROR_STATS;
-        err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-        if (err != COMMAND_OK)
-                chdlc_error(card,err,mb);
-        return err;
-}
-
-
-/*============================================================================
- * Read CHDLC operational statistics.
- */
-static int chdlc_read_op_stats (sdla_t* card)
-{
-        int err;
-        CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
-        mb->buffer_length = 0;
-        mb->command = READ_CHDLC_OPERATIONAL_STATS;
-        err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-        if (err != COMMAND_OK)
-                chdlc_error(card,err,mb);
-        return err;
-}
-
-
-/*============================================================================
- * Update communications error and general packet statistics.
- */
-static int update_comms_stats(sdla_t* card,
-	chdlc_private_area_t* chdlc_priv_area)
-{
-        CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-  	COMMS_ERROR_STATS_STRUCT* err_stats;
-        CHDLC_OPERATIONAL_STATS_STRUCT *op_stats;
-
-	/* on the first timer interrupt, read the comms error statistics */
-	if(chdlc_priv_area->update_comms_stats == 2) {
-		if(chdlc_read_comm_err_stats(card))
-			return 1;
-		err_stats = (COMMS_ERROR_STATS_STRUCT *)mb->data;
-		card->wandev.stats.rx_over_errors = 
-				err_stats->Rx_overrun_err_count;
-		card->wandev.stats.rx_crc_errors = 
-				err_stats->CRC_err_count;
-		card->wandev.stats.rx_frame_errors = 
-				err_stats->Rx_abort_count;
-		card->wandev.stats.rx_fifo_errors = 
-				err_stats->Rx_dis_pri_bfrs_full_count; 
-		card->wandev.stats.rx_missed_errors =
-				card->wandev.stats.rx_fifo_errors;
-		card->wandev.stats.tx_aborted_errors =
-				err_stats->sec_Tx_abort_count;
-	}
-
-        /* on the second timer interrupt, read the operational statistics */
-	else {
-        	if(chdlc_read_op_stats(card))
-                	return 1;
-		op_stats = (CHDLC_OPERATIONAL_STATS_STRUCT *)mb->data;
-		card->wandev.stats.rx_length_errors =
-			(op_stats->Rx_Data_discard_short_count +
-			op_stats->Rx_Data_discard_long_count);
-	}
-
-	return 0;
-}
-
-/*============================================================================
- * Send packet.
- *	Return:	0 - o.k.
- *		1 - no transmit buffers available
- */
-static int chdlc_send (sdla_t* card, void* data, unsigned len)
-{
-	CHDLC_DATA_TX_STATUS_EL_STRUCT *txbuf = card->u.c.txbuf;
-
-	if (txbuf->opp_flag)
-		return 1;
-	
-	sdla_poke(&card->hw, txbuf->ptr_data_bfr, data, len);
-
-	txbuf->frame_length = len;
-	txbuf->opp_flag = 1;		/* start transmission */
-	
-	/* Update transmit buffer control fields */
-	card->u.c.txbuf = ++txbuf;
-
-	if ((void*)txbuf > card->u.c.txbuf_last)
-		card->u.c.txbuf = card->u.c.txbuf_base;
-
-	return 0;
-}
-
-/****** Firmware Error Handler **********************************************/
-
-/*============================================================================
- * Firmware error handler.
- *	This routine is called whenever firmware command returns non-zero
- *	return code.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb)
-{
-	unsigned cmd = mb->command;
-
-	switch (err) {
-
-	case CMD_TIMEOUT:
-		printk(KERN_ERR "%s: command 0x%02X timed out!\n",
-			card->devname, cmd);
-		break;
-
-	case S514_BOTH_PORTS_SAME_CLK_MODE:
-		if(cmd == SET_CHDLC_CONFIGURATION) {
-			printk(KERN_INFO
-			 "%s: Configure both ports for the same clock source\n",
-				card->devname);
-			break;
-		}
-
-	default:
-		printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n",
-			card->devname, cmd, err);
-	}
-
-	return 0;
-}
-
-/****** Interrupt Handlers **************************************************/
-
-/*============================================================================
- * Cisco HDLC interrupt service routine.
- */
-STATIC void wsppp_isr (sdla_t* card)
-{
-	struct net_device* dev;
-	SHARED_MEMORY_INFO_STRUCT* flags = NULL;
-	int i;
-	sdla_t *my_card;
-
-
-	/* Check for which port the interrupt has been generated
-	 * Since Secondary Port is piggybacking on the Primary
-         * the check must be done here. 
-	 */
-
-	flags = card->u.c.flags;
-	if (!flags->interrupt_info_struct.interrupt_type){
-		/* Check for a second port (piggybacking) */
-		if((my_card = card->next)){
-			flags = my_card->u.c.flags;
-			if (flags->interrupt_info_struct.interrupt_type){
-				card = my_card;
-				card->isr(card);
-				return;
-			}
-		}
-	}
-
-	dev = card->wandev.dev;
-	card->in_isr = 1;
-	flags = card->u.c.flags;
-		
-	/* If we get an interrupt with no network device, stop the interrupts
-	 * and issue an error */
-	if ((!dev || !dev->priv) && flags->interrupt_info_struct.interrupt_type != 
-	    	COMMAND_COMPLETE_APP_INT_PEND){
-		goto isr_done;
-	}
-
-	
-	/* if critical due to peripheral operations
-	 * ie. update() or getstats() then reset the interrupt and
-	 * wait for the board to retrigger.
-	 */
-	if(test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
-		flags->interrupt_info_struct.
-					interrupt_type = 0;
-		goto isr_done;
-	}
-
-
-	/* On a 508 Card, if critical due to if_send 
-         * Major Error !!!
-	 */
-	if(card->hw.type != SDLA_S514) {
-		if(test_bit(0, (void*)&card->wandev.critical)) {
-			printk(KERN_INFO "%s: Critical while in ISR: %lx\n",
-				card->devname, card->wandev.critical);
-			goto isr_done;
-		}
-	}
-
-	switch(flags->interrupt_info_struct.interrupt_type) {
-
-		case RX_APP_INT_PEND:	/* 0x01: receive interrupt */
-			rx_intr(card);
-			break;
-
-		case TX_APP_INT_PEND:	/* 0x02: transmit interrupt */
-			flags->interrupt_info_struct.interrupt_permission &=
-				 ~APP_INT_ON_TX_FRAME;
-
-			netif_wake_queue(dev);
-			break;
-
-		case COMMAND_COMPLETE_APP_INT_PEND:/* 0x04: cmd cplt */
-			++ Intr_test_counter;
-			break;
-
-		case CHDLC_EXCEP_COND_APP_INT_PEND:	/* 0x20 */
-			process_chdlc_exception(card);
-			break;
-
-		case GLOBAL_EXCEP_COND_APP_INT_PEND:
-			process_global_exception(card);
-			break;
-
-		case TIMER_APP_INT_PEND:
-			timer_intr(card);
-			break;
-
-		default:
-			printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n", 
-				card->devname,
-				flags->interrupt_info_struct.interrupt_type);
-			printk(KERN_INFO "Code name: ");
-			for(i = 0; i < 4; i ++)
-				printk(KERN_INFO "%c",
-					flags->global_info_struct.codename[i]); 
-			printk(KERN_INFO "\nCode version: ");
-			for(i = 0; i < 4; i ++)
-				printk(KERN_INFO "%c", 
-					flags->global_info_struct.codeversion[i]); 
-			printk(KERN_INFO "\n");	
-			break;
-	}
-
-isr_done:
-	card->in_isr = 0;
-	flags->interrupt_info_struct.interrupt_type = 0;
-}
-
-/*============================================================================
- * Receive interrupt handler.
- */
-static void rx_intr (sdla_t* card)
-{
-	struct net_device *dev;
-	chdlc_private_area_t *chdlc_priv_area;
-	SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-	CHDLC_DATA_RX_STATUS_EL_STRUCT *rxbuf = card->u.c.rxmb;
-	struct sk_buff *skb;
-	unsigned len;
-	unsigned addr = rxbuf->ptr_data_bfr;
-	void *buf;
-	int i,udp_type;
-	
-	if (rxbuf->opp_flag != 0x01) {
-		printk(KERN_INFO 
-			"%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n", 
-			card->devname, (unsigned)rxbuf, rxbuf->opp_flag);
-                printk(KERN_INFO "Code name: ");
-                for(i = 0; i < 4; i ++)
-                        printk(KERN_INFO "%c",
-                                flags->global_info_struct.codename[i]);
-                printk(KERN_INFO "\nCode version: ");
-                for(i = 0; i < 4; i ++)
-                        printk(KERN_INFO "%c",
-                                flags->global_info_struct.codeversion[i]);
-                printk(KERN_INFO "\n");
-
-
-		/* Bug Fix: Mar 6 2000
-                 * If we get a corrupted mailbox, it measn that driver 
-                 * is out of sync with the firmware. There is no recovery.
-                 * If we don't turn off all interrupts for this card
-                 * the machine will crash. 
-                 */
-		printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname);
-		printk(KERN_INFO "Please contact Sangoma Technologies !\n");
-		chdlc_set_intr_mode(card,0);	
-		return;
-	}
-
-	dev = card->wandev.dev;
-
-	if (!dev){ 
-		goto rx_exit;
-	}
-	
-	if (!netif_running(dev)){
-		goto rx_exit;
-	}
-
-	chdlc_priv_area = dev->priv;
-
-	if (rxbuf->error_flag){	
-		goto rx_exit;
-	}
-	/* Take off two CRC bytes */
-
-	if (rxbuf->frame_length < 7 || rxbuf->frame_length > 1506 ){
-		goto rx_exit;
-	}	
-
-	len = rxbuf->frame_length - CRC_LENGTH;
-
-	/* Allocate socket buffer */
-	skb = dev_alloc_skb(len);
-
-	if (skb == NULL) {
-		if (net_ratelimit()){
-			printk(KERN_INFO "%s: no socket buffers available!\n",
-						card->devname);
-		}
-		++card->wandev.stats.rx_dropped;
-		goto rx_exit;
-	}
-
-	/* Copy data to the socket buffer */
-	if((addr + len) > card->u.c.rx_top + 1) {
-		unsigned tmp = card->u.c.rx_top - addr + 1;
-		buf = skb_put(skb, tmp);
-		sdla_peek(&card->hw, addr, buf, tmp);
-		addr = card->u.c.rx_base;
-		len -= tmp;
-	}
-		
-	buf = skb_put(skb, len);
-	sdla_peek(&card->hw, addr, buf, len);
-
-	skb->protocol = htons(ETH_P_WAN_PPP);
-
-	card->wandev.stats.rx_packets ++;
-	card->wandev.stats.rx_bytes += skb->len;
-	udp_type = udp_pkt_type( skb, card );
-
-	if(udp_type == UDP_CPIPE_TYPE) {
-		if(store_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK,
-   				      card, skb, dev, chdlc_priv_area)) {
-     		        flags->interrupt_info_struct.
-						interrupt_permission |= 
-							APP_INT_ON_TIMER; 
-		}
-	}else{
-               	/* Pass it up the protocol stack */
-                skb->dev = dev;
-                skb->mac.raw  = skb->data;
-                netif_rx(skb);
-                dev->last_rx = jiffies;
-	}
-
-rx_exit:
-	/* Release buffer element and calculate a pointer to the next one */
-	rxbuf->opp_flag = 0x00;
-	card->u.c.rxmb = ++ rxbuf;
-	if((void*)rxbuf > card->u.c.rxbuf_last){
-		card->u.c.rxmb = card->u.c.rxbuf_base;
-	}
-}
-
-/*============================================================================
- * Timer interrupt handler.
- * The timer interrupt is used for two purposes:
- *    1) Processing udp calls from 'cpipemon'.
- *    2) Reading board-level statistics for updating the proc file system.
- */
-void timer_intr(sdla_t *card)
-{
-        struct net_device* dev;
-        chdlc_private_area_t* chdlc_priv_area = NULL;
-        SHARED_MEMORY_INFO_STRUCT* flags = NULL;
-
-        dev = card->wandev.dev; 
-        chdlc_priv_area = dev->priv;
-
-	if (chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_CONFIG) {
-		if (!config_chdlc(card)){
-			chdlc_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_CONFIG;
-		}
-	}
-	
-	/* process a udp call if pending */
-       	if(chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_UDP) {
-               	process_udp_mgmt_pkt(card, dev,
-                       chdlc_priv_area);
-		chdlc_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_UDP;
-        }
-	
-
-	/* read the communications statistics if required */
-	if(chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_UPDATE) {
-		update_comms_stats(card, chdlc_priv_area);
-                if(!(-- chdlc_priv_area->update_comms_stats)) {
-			chdlc_priv_area->timer_int_enabled &= 
-				~TMR_INT_ENABLED_UPDATE;
-		}
-        }
-
-	/* only disable the timer interrupt if there are no udp or statistic */
-	/* updates pending */
-        if(!chdlc_priv_area->timer_int_enabled) {
-                flags = card->u.c.flags;
-                flags->interrupt_info_struct.interrupt_permission &=
-                        ~APP_INT_ON_TIMER;
-        }
-}
-
-/*------------------------------------------------------------------------------
-  Miscellaneous Functions
-	- set_chdlc_config() used to set configuration options on the board
-------------------------------------------------------------------------------*/
-
-static int set_chdlc_config(sdla_t* card)
-{
-
-	CHDLC_CONFIGURATION_STRUCT cfg;
-
-	memset(&cfg, 0, sizeof(CHDLC_CONFIGURATION_STRUCT));
-
-	if(card->wandev.clocking)
-		cfg.baud_rate = card->wandev.bps;
-
-	cfg.line_config_options = (card->wandev.interface == WANOPT_RS232) ?
-		INTERFACE_LEVEL_RS232 : INTERFACE_LEVEL_V35;
-
-	cfg.modem_config_options	= 0;
-	//API OPTIONS
-	cfg.CHDLC_API_options		= DISCARD_RX_ERROR_FRAMES;
-	cfg.modem_status_timer		= 100;
-	cfg.CHDLC_protocol_options	= HDLC_STREAMING_MODE;
-	cfg.percent_data_buffer_for_Tx  = 50;
-	cfg.CHDLC_statistics_options	= (CHDLC_TX_DATA_BYTE_COUNT_STAT |
-		CHDLC_RX_DATA_BYTE_COUNT_STAT);
-	cfg.max_CHDLC_data_field_length	= card->wandev.mtu;
-
-	cfg.transmit_keepalive_timer	= 0;
-	cfg.receive_keepalive_timer	= 0;
-	cfg.keepalive_error_tolerance	= 0;
-	cfg.SLARP_request_timer		= 0;
-
-	cfg.IP_address		= 0;
-	cfg.IP_netmask		= 0;
-	
-	return chdlc_configure(card, &cfg);
-}
-
-/*============================================================================
- * Process global exception condition
- */
-static int process_global_exception(sdla_t *card)
-{
-	CHDLC_MAILBOX_STRUCT* mbox = card->mbox;
-	int err;
-
-	mbox->buffer_length = 0;
-	mbox->command = READ_GLOBAL_EXCEPTION_CONDITION;
-	err = sdla_exec(mbox) ? mbox->return_code : CMD_TIMEOUT;
-
-	if(err != CMD_TIMEOUT ){
-	
-		switch(mbox->return_code) {
-         
-	      	case EXCEP_MODEM_STATUS_CHANGE:
-
-			printk(KERN_INFO "%s: Modem status change\n",
-				card->devname);
-
-			switch(mbox->data[0] & (DCD_HIGH | CTS_HIGH)) {
-				case (DCD_HIGH):
-					printk(KERN_INFO "%s: DCD high, CTS low\n",card->devname);
-					break;
-				case (CTS_HIGH):
-                                        printk(KERN_INFO "%s: DCD low, CTS high\n",card->devname);
-                                        break;
-                                case ((DCD_HIGH | CTS_HIGH)):
-                                        printk(KERN_INFO "%s: DCD high, CTS high\n",card->devname);
-                                        break;
-				default:
-                                        printk(KERN_INFO "%s: DCD low, CTS low\n",card->devname);
-                                        break;
-			}
-
-			if (!(mbox->data[0] & DCD_HIGH) || !(mbox->data[0] & DCD_HIGH)){
-				//printk(KERN_INFO "Sending TERM Request Manually !\n");
-				send_ppp_term_request(card->wandev.dev);
-			}	
-			break;
-
-                case EXCEP_TRC_DISABLED:
-                        printk(KERN_INFO "%s: Line trace disabled\n",
-				card->devname);
-                        break;
-
-		case EXCEP_IRQ_TIMEOUT:
-			printk(KERN_INFO "%s: IRQ timeout occurred\n",
-				card->devname); 
-			break;
-
-                default:
-                        printk(KERN_INFO "%s: Global exception %x\n",
-				card->devname, mbox->return_code);
-                        break;
-                }
-	}
-	return 0;
-}
-
-
-/*============================================================================
- * Process chdlc exception condition
- */
-static int process_chdlc_exception(sdla_t *card)
-{
-	CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-	int err;
-
-	mb->buffer_length = 0;
-	mb->command = READ_CHDLC_EXCEPTION_CONDITION;
-	err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-	if(err != CMD_TIMEOUT) {
-	
-		switch (err) {
-
-		case EXCEP_LINK_ACTIVE:
-			port_set_state(card, WAN_CONNECTED);
-			break;
-
-		case EXCEP_LINK_INACTIVE_MODEM:
-			port_set_state(card, WAN_DISCONNECTED);
-			break;
-
-		case EXCEP_LOOPBACK_CONDITION:
-			printk(KERN_INFO "%s: Loopback Condition Detected.\n",
-						card->devname);
-			break;
-
-		case NO_CHDLC_EXCEP_COND_TO_REPORT:
-			printk(KERN_INFO "%s: No exceptions reported.\n",
-						card->devname);
-			break;
-		default:
-			printk(KERN_INFO "%s: Exception Condition %x!\n",
-					card->devname,err);
-			break;
-		}
-
-	}
-	return 0;
-}
-
-
-/*=============================================================================
- * Store a UDP management packet for later processing.
- */
-
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
-			      struct sk_buff *skb, struct net_device* dev,
-			      chdlc_private_area_t* chdlc_priv_area )
-{
-	int udp_pkt_stored = 0;
-
-	if(!chdlc_priv_area->udp_pkt_lgth &&
-	  (skb->len <= MAX_LGTH_UDP_MGNT_PKT)) {
-        	chdlc_priv_area->udp_pkt_lgth = skb->len;
-		chdlc_priv_area->udp_pkt_src = udp_pkt_src;
-       		memcpy(chdlc_priv_area->udp_pkt_data, skb->data, skb->len);
-		chdlc_priv_area->timer_int_enabled = TMR_INT_ENABLED_UDP;
-		udp_pkt_stored = 1;
-	}
-
-	if(udp_pkt_src == UDP_PKT_FRM_STACK)
-		dev_kfree_skb_any(skb);
-	else
-                dev_kfree_skb_any(skb);
-	
-	return(udp_pkt_stored);
-}
-
-
-/*=============================================================================
- * Process UDP management packet.
- */
-
-static int process_udp_mgmt_pkt(sdla_t* card, struct net_device* dev,
-				chdlc_private_area_t* chdlc_priv_area ) 
-{
-	unsigned char *buf;
-	unsigned int frames, len;
-	struct sk_buff *new_skb;
-	unsigned short buffer_length, real_len;
-	unsigned long data_ptr;
-	unsigned data_length;
-	int udp_mgmt_req_valid = 1;
-	CHDLC_MAILBOX_STRUCT *mb = card->mbox;
-	SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-	chdlc_udp_pkt_t *chdlc_udp_pkt;
-	struct timeval tv;
-	int err;
-	char ut_char;
-
-	chdlc_udp_pkt = (chdlc_udp_pkt_t *) chdlc_priv_area->udp_pkt_data;
-
-	if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
-		switch(chdlc_udp_pkt->cblock.command) {
-			case READ_GLOBAL_STATISTICS:
-			case READ_MODEM_STATUS:  
-			case READ_CHDLC_LINK_STATUS:
-			case CPIPE_ROUTER_UP_TIME:
-			case READ_COMMS_ERROR_STATS:
-			case READ_CHDLC_OPERATIONAL_STATS:
-
-			/* These two commands are executed for
-			 * each request */
-			case READ_CHDLC_CONFIGURATION:
-			case READ_CHDLC_CODE_VERSION:
-				udp_mgmt_req_valid = 1;
-				break;
-			default:
-				udp_mgmt_req_valid = 0;
-				break;
-		} 
-	}
-	
-  	if(!udp_mgmt_req_valid) {
-
-		/* set length to 0 */
-		chdlc_udp_pkt->cblock.buffer_length = 0;
-
-    		/* set return code */
-		chdlc_udp_pkt->cblock.return_code = 0xCD;
-
-		if (net_ratelimit()){	
-			printk(KERN_INFO 
-			"%s: Warning, Illegal UDP command attempted from network: %x\n",
-			card->devname,chdlc_udp_pkt->cblock.command);
-		}
-
-   	} else {
-	   	unsigned long trace_status_cfg_addr = 0;
-		TRACE_STATUS_EL_CFG_STRUCT trace_cfg_struct;
-		TRACE_STATUS_ELEMENT_STRUCT trace_element_struct;
-
-		switch(chdlc_udp_pkt->cblock.command) {
-
-		case CPIPE_ENABLE_TRACING:
-		     if (!chdlc_priv_area->TracingEnabled) {
-
-			/* OPERATE_DATALINE_MONITOR */
-
-			mb->buffer_length = sizeof(LINE_TRACE_CONFIG_STRUCT);
-			mb->command = SET_TRACE_CONFIGURATION;
-
-    			((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
-				trace_config = TRACE_ACTIVE;
-			/* Trace delay mode is not used because it slows
-			   down transfer and results in a standoff situation
-			   when there is a lot of data */
-
-			/* Configure the Trace based on user inputs */
-			((LINE_TRACE_CONFIG_STRUCT *)mb->data)->trace_config |= 
-					chdlc_udp_pkt->data[0];
-
-			((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
-			   trace_deactivation_timer = 4000;
-
-
-			err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-			if (err != COMMAND_OK) {
-				chdlc_error(card,err,mb);
-				card->TracingEnabled = 0;
-				chdlc_udp_pkt->cblock.return_code = err;
-				mb->buffer_length = 0;
-				break;
-	    		} 
-
-			/* Get the base address of the trace element list */
-			mb->buffer_length = 0;
-			mb->command = READ_TRACE_CONFIGURATION;
-			err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
-			if (err != COMMAND_OK) {
-				chdlc_error(card,err,mb);
-				chdlc_priv_area->TracingEnabled = 0;
-				chdlc_udp_pkt->cblock.return_code = err;
-				mb->buffer_length = 0;
-				break;
-	    		} 	
-
-	   		trace_status_cfg_addr =((LINE_TRACE_CONFIG_STRUCT *)
-				mb->data) -> ptr_trace_stat_el_cfg_struct;
-
-			sdla_peek(&card->hw, trace_status_cfg_addr,
-				 &trace_cfg_struct, sizeof(trace_cfg_struct));
-		    
-			chdlc_priv_area->start_trace_addr = trace_cfg_struct.
-				base_addr_trace_status_elements;
-
-			chdlc_priv_area->number_trace_elements = 
-					trace_cfg_struct.number_trace_status_elements;
-
-			chdlc_priv_area->end_trace_addr = (unsigned long)
-					((TRACE_STATUS_ELEMENT_STRUCT *)
-					 chdlc_priv_area->start_trace_addr + 
-					 (chdlc_priv_area->number_trace_elements - 1));
-
-			chdlc_priv_area->base_addr_trace_buffer = 
-					trace_cfg_struct.base_addr_trace_buffer;
-
-			chdlc_priv_area->end_addr_trace_buffer = 
-					trace_cfg_struct.end_addr_trace_buffer;
-
-		    	chdlc_priv_area->curr_trace_addr = 
-					trace_cfg_struct.next_trace_element_to_use;
-
-	    		chdlc_priv_area->available_buffer_space = 2000 - 
-								  sizeof(ip_pkt_t) -
-								  sizeof(udp_pkt_t) -
-							      	  sizeof(wp_mgmt_t) -
-								  sizeof(cblock_t) -
-							          sizeof(trace_info_t);	
-	       	     }
-		     chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
-		     mb->buffer_length = 0;
-	       	     chdlc_priv_area->TracingEnabled = 1;
-	       	     break;
-	   
-
-		case CPIPE_DISABLE_TRACING:
-		     if (chdlc_priv_area->TracingEnabled) {
-
-			/* OPERATE_DATALINE_MONITOR */
-			mb->buffer_length = sizeof(LINE_TRACE_CONFIG_STRUCT);
-			mb->command = SET_TRACE_CONFIGURATION;
-    			((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
-				trace_config = TRACE_INACTIVE;
-			err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-		     }		
-
-		     chdlc_priv_area->TracingEnabled = 0;
-		     chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
-		     mb->buffer_length = 0;
-		     break;
-	   
-
-		case CPIPE_GET_TRACE_INFO:
-
-		     if (!chdlc_priv_area->TracingEnabled) {
-			chdlc_udp_pkt->cblock.return_code = 1;
-			mb->buffer_length = 0;
-			break;
-		     }
-
-  		     chdlc_udp_pkt->trace_info.ismoredata = 0x00;
-		     buffer_length = 0;	/* offset of packet already occupied */
-
-		     for (frames=0; frames < chdlc_priv_area->number_trace_elements; frames++){
-
-			trace_pkt_t *trace_pkt = (trace_pkt_t *)
-				&chdlc_udp_pkt->data[buffer_length];
-
-			sdla_peek(&card->hw, chdlc_priv_area->curr_trace_addr,
-			   	  (unsigned char *)&trace_element_struct,
-			   	  sizeof(TRACE_STATUS_ELEMENT_STRUCT));
-
-     			if (trace_element_struct.opp_flag == 0x00) {
-			 	break;
-			}
-
-			/* get pointer to real data */
-			data_ptr = trace_element_struct.ptr_data_bfr;
-
-			/* See if there is actual data on the trace buffer */
-			if (data_ptr){
-				data_length = trace_element_struct.trace_length;
-			}else{
-				data_length = 0;
-				chdlc_udp_pkt->trace_info.ismoredata = 0x01;
-			}
-	
-   			if( (chdlc_priv_area->available_buffer_space - buffer_length)
-				< ( sizeof(trace_pkt_t) + data_length) ) {
-
-                            /* indicate there are more frames on board & exit */
-				chdlc_udp_pkt->trace_info.ismoredata = 0x01;
-                               	break;
-                         }
-
-			trace_pkt->status = trace_element_struct.trace_type;
-
-			trace_pkt->time_stamp =
-				trace_element_struct.trace_time_stamp;
-
-			trace_pkt->real_length =
-				trace_element_struct.trace_length;
-
-			/* see if we can fit the frame into the user buffer */
-			real_len = trace_pkt->real_length;
-
-			if (data_ptr == 0) {
-			     	trace_pkt->data_avail = 0x00;
-			} else {
-				unsigned tmp = 0;
-
-				/* get the data from circular buffer
-				    must check for end of buffer */
-			        trace_pkt->data_avail = 0x01;
-
-				if ((data_ptr + real_len) >
-					     chdlc_priv_area->end_addr_trace_buffer + 1){
-
-				    	tmp = chdlc_priv_area->end_addr_trace_buffer - data_ptr + 1;
-				    	sdla_peek(&card->hw, data_ptr,
-					       	  trace_pkt->data,tmp);
-				    	data_ptr = chdlc_priv_area->base_addr_trace_buffer;
-				}
-	
-		        	sdla_peek(&card->hw, data_ptr,
-					  &trace_pkt->data[tmp], real_len - tmp);
-			}	
-
-			/* zero the opp flag to show we got the frame */
-			ut_char = 0x00;
-			sdla_poke(&card->hw, chdlc_priv_area->curr_trace_addr, &ut_char, 1);
-
-       			/* now move onto the next frame */
-       			chdlc_priv_area->curr_trace_addr += sizeof(TRACE_STATUS_ELEMENT_STRUCT);
-
-       			/* check if we went over the last address */
-			if ( chdlc_priv_area->curr_trace_addr > chdlc_priv_area->end_trace_addr ) {
-				chdlc_priv_area->curr_trace_addr = chdlc_priv_area->start_trace_addr;
-       			}
-
-            		if(trace_pkt->data_avail == 0x01) {
-				buffer_length += real_len - 1;
-			}
-	 
-	       	    	/* for the header */
-	            	buffer_length += sizeof(trace_pkt_t);
-
-		     }  /* For Loop */
-
-		     if (frames == chdlc_priv_area->number_trace_elements){
-			chdlc_udp_pkt->trace_info.ismoredata = 0x01;
-	             }
- 		     chdlc_udp_pkt->trace_info.num_frames = frames;
-		 
-    		     mb->buffer_length = buffer_length;
-		     chdlc_udp_pkt->cblock.buffer_length = buffer_length; 
-		 
-		     chdlc_udp_pkt->cblock.return_code = COMMAND_OK; 
-		     
-		     break;
-
-
-		case CPIPE_FT1_READ_STATUS:
-			((unsigned char *)chdlc_udp_pkt->data )[0] =
-				flags->FT1_info_struct.parallel_port_A_input;
-
-			((unsigned char *)chdlc_udp_pkt->data )[1] =
-				flags->FT1_info_struct.parallel_port_B_input;
-				 
-			chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
-			mb->buffer_length = 2;
-			break;
-		
-		case CPIPE_ROUTER_UP_TIME:
-			do_gettimeofday( &tv );
-			chdlc_priv_area->router_up_time = tv.tv_sec - 
-					chdlc_priv_area->router_start_time;
-			*(unsigned long *)&chdlc_udp_pkt->data = 
-					chdlc_priv_area->router_up_time;	
-			mb->buffer_length = sizeof(unsigned long);
-			break;
-
-   		case FT1_MONITOR_STATUS_CTRL:
-			/* Enable FT1 MONITOR STATUS */
-	        	if ((chdlc_udp_pkt->data[0] & ENABLE_READ_FT1_STATUS) ||  
-				(chdlc_udp_pkt->data[0] & ENABLE_READ_FT1_OP_STATS)) {
-			
-			     	if( rCount++ != 0 ) {
-					chdlc_udp_pkt->cblock.
-					return_code = COMMAND_OK;
-					mb->buffer_length = 1;
-		  			break;
-		    	     	}
-	      		}
-
-	      		/* Disable FT1 MONITOR STATUS */
-	      		if( chdlc_udp_pkt->data[0] == 0) {
-
-	      	   	     	if( --rCount != 0) {
-		  			chdlc_udp_pkt->cblock.
-					return_code = COMMAND_OK;
-					mb->buffer_length = 1;
-		  			break;
-	   	    	     	} 
-	      		} 	
-	
-		default:
-			/* it's a board command */
-			mb->command = chdlc_udp_pkt->cblock.command;
-			mb->buffer_length = chdlc_udp_pkt->cblock.buffer_length;
-			if (mb->buffer_length) {
-				memcpy(&mb->data, (unsigned char *) chdlc_udp_pkt->
-							data, mb->buffer_length);
-	      		} 
-			/* run the command on the board */
-			err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-			if (err != COMMAND_OK) {
-				break;
-			}
-
-			/* copy the result back to our buffer */
-	         	memcpy(&chdlc_udp_pkt->cblock, mb, sizeof(cblock_t)); 
-			
-			if (mb->buffer_length) {
-	         		memcpy(&chdlc_udp_pkt->data, &mb->data, 
-								mb->buffer_length); 
-	      		}
-
-		} /* end of switch */
-     	} /* end of else */
-
-     	/* Fill UDP TTL */
-	chdlc_udp_pkt->ip_pkt.ttl = card->wandev.ttl; 
-
-     	len = reply_udp(chdlc_priv_area->udp_pkt_data, mb->buffer_length);
-	
-     	if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-		if(!chdlc_send(card, chdlc_priv_area->udp_pkt_data, len)) {
-			++ card->wandev.stats.tx_packets;
-			card->wandev.stats.tx_bytes += len;
-		}
-	} else {	
-	
-		/* Pass it up the stack
-    		   Allocate socket buffer */
-		if ((new_skb = dev_alloc_skb(len)) != NULL) {
-			/* copy data into new_skb */
-
- 	    		buf = skb_put(new_skb, len);
-  	    		memcpy(buf, chdlc_priv_area->udp_pkt_data, len);
-
-            		/* Decapsulate pkt and pass it up the protocol stack */
-	    		new_skb->protocol = htons(ETH_P_IP);
-            		new_skb->dev = dev;
-	    		new_skb->mac.raw  = new_skb->data;
-	
-			netif_rx(new_skb);
-			dev->last_rx = jiffies;
-		} else {
-	    	
-			printk(KERN_INFO "%s: no socket buffers available!\n",
-					card->devname);
-  		}
-    	}
- 
-	chdlc_priv_area->udp_pkt_lgth = 0;
- 	
-	return 0;
-}
-
-/*============================================================================
- * Initialize Receive and Transmit Buffers.
- */
-
-static void init_chdlc_tx_rx_buff(sdla_t* card, struct net_device *dev)
-{
-	CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-	CHDLC_TX_STATUS_EL_CFG_STRUCT *tx_config;
-	CHDLC_RX_STATUS_EL_CFG_STRUCT *rx_config;
-	char err;
-	
-	mb->buffer_length = 0;
-	mb->command = READ_CHDLC_CONFIGURATION;
-	err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
-	if(err != COMMAND_OK) {
-		chdlc_error(card,err,mb);
-		return;
-	}
-
-	if(card->hw.type == SDLA_S514) {
-		tx_config = (CHDLC_TX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
-                (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
-                            ptr_CHDLC_Tx_stat_el_cfg_struct));
-        	rx_config = (CHDLC_RX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
-                (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
-                            ptr_CHDLC_Rx_stat_el_cfg_struct));
-
-       		/* Setup Head and Tails for buffers */
-        	card->u.c.txbuf_base = (void *)(card->hw.dpmbase +
-                tx_config->base_addr_Tx_status_elements);
-        	card->u.c.txbuf_last = 
-		(CHDLC_DATA_TX_STATUS_EL_STRUCT *)  
-                card->u.c.txbuf_base +
-		(tx_config->number_Tx_status_elements - 1);
-
-        	card->u.c.rxbuf_base = (void *)(card->hw.dpmbase +
-                rx_config->base_addr_Rx_status_elements);
-        	card->u.c.rxbuf_last =
-		(CHDLC_DATA_RX_STATUS_EL_STRUCT *)
-                card->u.c.rxbuf_base +
-		(rx_config->number_Rx_status_elements - 1);
-
- 		/* Set up next pointer to be used */
-        	card->u.c.txbuf = (void *)(card->hw.dpmbase +
-                tx_config->next_Tx_status_element_to_use);
-        	card->u.c.rxmb = (void *)(card->hw.dpmbase +
-                rx_config->next_Rx_status_element_to_use);
-	}
-        else {
-                tx_config = (CHDLC_TX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
-			(((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
-			ptr_CHDLC_Tx_stat_el_cfg_struct % SDLA_WINDOWSIZE));
-
-                rx_config = (CHDLC_RX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
-			(((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
-			ptr_CHDLC_Rx_stat_el_cfg_struct % SDLA_WINDOWSIZE));
-
-                /* Setup Head and Tails for buffers */
-                card->u.c.txbuf_base = (void *)(card->hw.dpmbase +
-		(tx_config->base_addr_Tx_status_elements % SDLA_WINDOWSIZE));
-                card->u.c.txbuf_last =
-		(CHDLC_DATA_TX_STATUS_EL_STRUCT *)card->u.c.txbuf_base
-		+ (tx_config->number_Tx_status_elements - 1);
-                card->u.c.rxbuf_base = (void *)(card->hw.dpmbase +
-		(rx_config->base_addr_Rx_status_elements % SDLA_WINDOWSIZE));
-                card->u.c.rxbuf_last = 
-		(CHDLC_DATA_RX_STATUS_EL_STRUCT *)card->u.c.rxbuf_base
-		+ (rx_config->number_Rx_status_elements - 1);
-
-                 /* Set up next pointer to be used */
-                card->u.c.txbuf = (void *)(card->hw.dpmbase +
-		(tx_config->next_Tx_status_element_to_use % SDLA_WINDOWSIZE));
-                card->u.c.rxmb = (void *)(card->hw.dpmbase +
-		(rx_config->next_Rx_status_element_to_use % SDLA_WINDOWSIZE));
-        }
-
-        /* Setup Actual Buffer Start and end addresses */
-        card->u.c.rx_base = rx_config->base_addr_Rx_buffer;
-        card->u.c.rx_top  = rx_config->end_addr_Rx_buffer;
-
-}
-
-/*=============================================================================
- * Perform Interrupt Test by running READ_CHDLC_CODE_VERSION command MAX_INTR
- * _TEST_COUNTER times.
- */
-static int intr_test( sdla_t* card)
-{
-	CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-	int err,i;
-
-	Intr_test_counter = 0;
-
-	/* The critical flag is unset because during initialization (if_open) 
-	 * we want the interrupts to be enabled so that when the wpc_isr is
-	 * called it does not exit due to critical flag set.
-	 */ 
-
-	err = chdlc_set_intr_mode(card, APP_INT_ON_COMMAND_COMPLETE);
-
-	if (err == CMD_OK) { 
-		for (i = 0; i < MAX_INTR_TEST_COUNTER; i ++) {	
-			mb->buffer_length  = 0;
-			mb->command = READ_CHDLC_CODE_VERSION;
-			err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-		}
-	}
-	else {
-		return err;
-	}
-
-	err = chdlc_set_intr_mode(card, 0);
-
-	if (err != CMD_OK)
-		return err;
-
-	return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. CPIPEAB ?
- */
-static int udp_pkt_type(struct sk_buff *skb, sdla_t* card)
-{
-	 chdlc_udp_pkt_t *chdlc_udp_pkt = (chdlc_udp_pkt_t *)skb->data;
-
-	if (!strncmp(chdlc_udp_pkt->wp_mgmt.signature,UDPMGMT_SIGNATURE,8) &&
-	   (chdlc_udp_pkt->udp_pkt.udp_dst_port == ntohs(card->wandev.udp_port)) &&
-	   (chdlc_udp_pkt->ip_pkt.protocol == UDPMGMT_UDP_PROTOCOL) &&
-	   (chdlc_udp_pkt->wp_mgmt.request_reply == UDPMGMT_REQUEST)) {
-		return UDP_CPIPE_TYPE;
-	}
-	else return UDP_INVALID_TYPE;
-}
-
-/*============================================================================
- * Set PORT state.
- */
-static void port_set_state (sdla_t *card, int state)
-{
-	struct net_device *dev = card->wandev.dev;
-	chdlc_private_area_t *chdlc_priv_area = dev->priv;
-
-        if (card->u.c.state != state)
-        {
-                switch (state)
-                {
-                case WAN_CONNECTED:
-                        printk (KERN_INFO "%s: HDLC link connected!\n",
-                                card->devname);
-                      break;
-
-                case WAN_CONNECTING:
-                        printk (KERN_INFO "%s: HDLC link connecting...\n",
-                                card->devname);
-                        break;
-
-                case WAN_DISCONNECTED:
-                        printk (KERN_INFO "%s: HDLC link disconnected!\n",
-                                card->devname);
-                        break;
-                }
-
-                card->wandev.state = card->u.c.state = state;
-		chdlc_priv_area->common.state = state;
-        }
-}
-
-void s508_lock (sdla_t *card, unsigned long *smp_flags)
-{
-	spin_lock_irqsave(&card->wandev.lock, *smp_flags);
-        if (card->next){
-		/* It is ok to use spin_lock here, since we
-		 * already turned off interrupts */
-        	spin_lock(&card->next->wandev.lock);
-	}
-}
-
-void s508_unlock (sdla_t *card, unsigned long *smp_flags)
-{
-	if (card->next){
-		spin_unlock(&card->next->wandev.lock);
-	}
-	spin_unlock_irqrestore(&card->wandev.lock, *smp_flags);
-}
-
-
-
-/*===========================================================================
- * config_chdlc
- *
- *	Configure the chdlc protocol and enable communications.		
- *
- *   	The if_open() function binds this function to the poll routine.
- *      Therefore, this function will run every time the chdlc interface
- *      is brought up. We cannot run this function from the if_open 
- *      because if_open does not have access to the remote IP address.
- *      
- *	If the communications are not enabled, proceed to configure
- *      the card and enable communications.
- *
- *      If the communications are enabled, it means that the interface
- *      was shutdown by ether the user or driver. In this case, we 
- *      have to check that the IP addresses have not changed.  If
- *      the IP addresses have changed, we have to reconfigure the firmware
- *      and update the changed IP addresses.  Otherwise, just exit.
- *
- */
-
-static int config_chdlc (sdla_t *card)
-{
-	struct net_device *dev = card->wandev.dev;
-	SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
-	if (card->u.c.comm_enabled){
-		chdlc_comm_disable(card);
-		port_set_state(card, WAN_DISCONNECTED);
-	}
-
-	if (set_chdlc_config(card)) {
-		printk(KERN_INFO "%s: CHDLC Configuration Failed!\n",
-				card->devname);
-		return 0;
-	}
-	init_chdlc_tx_rx_buff(card, dev);
-
-	/* Set interrupt mode and mask */
-        if (chdlc_set_intr_mode(card, APP_INT_ON_RX_FRAME |
-                		APP_INT_ON_GLOBAL_EXCEP_COND |
-                		APP_INT_ON_TX_FRAME |
-                		APP_INT_ON_CHDLC_EXCEP_COND | APP_INT_ON_TIMER)){
-		printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
-				card->devname);
-		return 0;	
-        }
-	
-
-	/* Mask the Transmit and Timer interrupt */
-	flags->interrupt_info_struct.interrupt_permission &= 
-		~(APP_INT_ON_TX_FRAME | APP_INT_ON_TIMER);
-
-
-	if (chdlc_comm_enable(card) != 0) {
-		printk(KERN_INFO "%s: Failed to enable chdlc communications!\n",
-				card->devname);
-		flags->interrupt_info_struct.interrupt_permission = 0;
-		card->u.c.comm_enabled=0;
-		chdlc_set_intr_mode(card,0);
-		return 0;
-	}
-
-	/* Initialize Rx/Tx buffer control fields */
-	port_set_state(card, WAN_CONNECTING);
-	return 0; 
-}
-
-
-static void send_ppp_term_request(struct net_device *dev)
-{
-	struct sk_buff *new_skb;
-	unsigned char *buf;
-
-	if ((new_skb = dev_alloc_skb(8)) != NULL) {
-		/* copy data into new_skb */
-
-		buf = skb_put(new_skb, 8);
-		sprintf(buf,"%c%c%c%c%c%c%c%c", 0xFF,0x03,0xC0,0x21,0x05,0x98,0x00,0x07);
-
-		/* Decapsulate pkt and pass it up the protocol stack */
-		new_skb->protocol = htons(ETH_P_WAN_PPP);
-		new_skb->dev = dev;
-		new_skb->mac.raw  = new_skb->data;
-
-		netif_rx(new_skb);
-		dev->last_rx = jiffies;
-	}
-}
-
-
-MODULE_LICENSE("GPL");
-
-/****** End ****************************************************************/