Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 541 insertions, 0 deletions

diff --git a/include/linux/wanrouter.h b/include/linux/wanrouter.h
new file mode 100644
index 000000000000..3e89f0f15f49
--- /dev/null
+++ b/include/linux/wanrouter.h
@@ -0,0 +1,541 @@
+/*****************************************************************************
+* wanrouter.h	Definitions for the WAN Multiprotocol Router Module.
+*		This module provides API and common services for WAN Link
+*		Drivers and is completely hardware-independent.
+*
+* Author: 	Nenad Corbic <ncorbic@sangoma.com>
+*		Gideon Hack 	
+* Additions:	Arnaldo Melo
+*
+* Copyright:	(c) 1995-2000 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.
+* ============================================================================
+* Jul 21, 2000  Nenad Corbic	Added WAN_FT1_READY State
+* Feb 24, 2000  Nenad Corbic    Added support for socket based x25api
+* Jan 28, 2000  Nenad Corbic    Added support for the ASYNC protocol.
+* Oct 04, 1999  Nenad Corbic 	Updated for 2.1.0 release
+* Jun 02, 1999  Gideon Hack	Added support for the S514 adapter.
+* May 23, 1999	Arnaldo Melo	Added local_addr to wanif_conf_t
+*				WAN_DISCONNECTING state added
+* Jul 20, 1998	David Fong	Added Inverse ARP options to 'wanif_conf_t'
+* Jun 12, 1998	David Fong	Added Cisco HDLC support.
+* Dec 16, 1997	Jaspreet Singh	Moved 'enable_IPX' and 'network_number' to
+*				'wanif_conf_t'
+* Dec 05, 1997	Jaspreet Singh	Added 'pap', 'chap' to 'wanif_conf_t'
+*				Added 'authenticator' to 'wan_ppp_conf_t'
+* Nov 06, 1997	Jaspreet Singh	Changed Router Driver version to 1.1 from 1.0
+* Oct 20, 1997	Jaspreet Singh	Added 'cir','bc','be' and 'mc' to 'wanif_conf_t'
+*				Added 'enable_IPX' and 'network_number' to 
+*				'wan_device_t'.  Also added defines for
+*				UDP PACKET TYPE, Interrupt test, critical values
+*				for RACE conditions.
+* Oct 05, 1997	Jaspreet Singh	Added 'dlci_num' and 'dlci[100]' to 
+*				'wan_fr_conf_t' to configure a list of dlci(s)
+*				for a NODE 
+* Jul 07, 1997	Jaspreet Singh	Added 'ttl' to 'wandev_conf_t' & 'wan_device_t'
+* May 29, 1997 	Jaspreet Singh	Added 'tx_int_enabled' to 'wan_device_t'
+* May 21, 1997	Jaspreet Singh	Added 'udp_port' to 'wan_device_t'
+* Apr 25, 1997  Farhan Thawar   Added 'udp_port' to 'wandev_conf_t'
+* Jan 16, 1997	Gene Kozin	router_devlist made public
+* Jan 02, 1997	Gene Kozin	Initial version (based on wanpipe.h).
+*****************************************************************************/
+
+#include <linux/spinlock.h>       /* Support for SMP Locking */
+
+#ifndef	_ROUTER_H
+#define	_ROUTER_H
+
+#define	ROUTER_NAME	"wanrouter"	/* in case we ever change it */
+#define	ROUTER_VERSION	1		/* version number */
+#define	ROUTER_RELEASE	1		/* release (minor version) number */
+#define	ROUTER_IOCTL	'W'		/* for IOCTL calls */
+#define	ROUTER_MAGIC	0x524D4157L	/* signature: 'WANR' reversed */
+
+/* IOCTL codes for /proc/router/<device> entries (up to 255) */
+enum router_ioctls
+{
+	ROUTER_SETUP	= ROUTER_IOCTL<<8,	/* configure device */
+	ROUTER_DOWN,				/* shut down device */
+	ROUTER_STAT,				/* get device status */
+	ROUTER_IFNEW,				/* add interface */
+	ROUTER_IFDEL,				/* delete interface */
+	ROUTER_IFSTAT,				/* get interface status */
+	ROUTER_USER	= (ROUTER_IOCTL<<8)+16,	/* driver-specific calls */
+	ROUTER_USER_MAX	= (ROUTER_IOCTL<<8)+31
+};
+
+/* identifiers for displaying proc file data for dual port adapters */
+#define PROC_DATA_PORT_0 0x8000	/* the data is for port 0 */
+#define PROC_DATA_PORT_1 0x8001	/* the data is for port 1 */
+
+/* NLPID for packet encapsulation (ISO/IEC TR 9577) */
+#define	NLPID_IP	0xCC	/* Internet Protocol Datagram */
+#define	NLPID_SNAP	0x80	/* IEEE Subnetwork Access Protocol */
+#define	NLPID_CLNP	0x81	/* ISO/IEC 8473 */
+#define	NLPID_ESIS	0x82	/* ISO/IEC 9542 */
+#define	NLPID_ISIS	0x83	/* ISO/IEC ISIS */
+#define	NLPID_Q933	0x08	/* CCITT Q.933 */
+
+/* Miscellaneous */
+#define	WAN_IFNAME_SZ	15	/* max length of the interface name */
+#define	WAN_DRVNAME_SZ	15	/* max length of the link driver name */
+#define	WAN_ADDRESS_SZ	31	/* max length of the WAN media address */
+#define USED_BY_FIELD	8	/* max length of the used by field */
+
+/* Defines for UDP PACKET TYPE */
+#define UDP_PTPIPE_TYPE 	0x01
+#define UDP_FPIPE_TYPE		0x02
+#define UDP_CPIPE_TYPE		0x03
+#define UDP_DRVSTATS_TYPE 	0x04
+#define UDP_INVALID_TYPE  	0x05
+
+/* Command return code */
+#define CMD_OK		0		/* normal firmware return code */
+#define CMD_TIMEOUT	0xFF		/* firmware command timed out */
+
+/* UDP Packet Management */
+#define UDP_PKT_FRM_STACK	0x00
+#define UDP_PKT_FRM_NETWORK	0x01
+
+/* Maximum interrupt test counter */
+#define MAX_INTR_TEST_COUNTER	100
+
+/* Critical Values for RACE conditions*/
+#define CRITICAL_IN_ISR		0xA1
+#define CRITICAL_INTR_HANDLED	0xB1
+
+/****** Data Types **********************************************************/
+
+/*----------------------------------------------------------------------------
+ * X.25-specific link-level configuration.
+ */
+typedef struct wan_x25_conf
+{
+	unsigned lo_pvc;	/* lowest permanent circuit number */
+	unsigned hi_pvc;	/* highest permanent circuit number */
+	unsigned lo_svc;	/* lowest switched circuit number */
+	unsigned hi_svc;	/* highest switched circuit number */
+	unsigned hdlc_window;	/* HDLC window size (1..7) */
+	unsigned pkt_window;	/* X.25 packet window size (1..7) */
+	unsigned t1;		/* HDLC timer T1, sec (1..30) */
+	unsigned t2;		/* HDLC timer T2, sec (0..29) */
+	unsigned t4;		/* HDLC supervisory frame timer = T4 * T1 */
+	unsigned n2;		/* HDLC retransmission limit (1..30) */
+	unsigned t10_t20;	/* X.25 RESTART timeout, sec (1..255) */
+	unsigned t11_t21;	/* X.25 CALL timeout, sec (1..255) */
+	unsigned t12_t22;	/* X.25 RESET timeout, sec (1..255) */
+	unsigned t13_t23;	/* X.25 CLEAR timeout, sec (1..255) */
+	unsigned t16_t26;	/* X.25 INTERRUPT timeout, sec (1..255) */
+	unsigned t28;		/* X.25 REGISTRATION timeout, sec (1..255) */
+	unsigned r10_r20;	/* RESTART retransmission limit (0..250) */
+	unsigned r12_r22;	/* RESET retransmission limit (0..250) */
+	unsigned r13_r23;	/* CLEAR retransmission limit (0..250) */
+	unsigned ccitt_compat;	/* compatibility mode: 1988/1984/1980 */
+	unsigned x25_conf_opt;   /* User defined x25 config optoins */
+	unsigned char LAPB_hdlc_only; /* Run in HDLC only mode */
+	unsigned char logging;   /* Control connection logging */  
+	unsigned char oob_on_modem; /* Whether to send modem status to the user app */
+} wan_x25_conf_t;
+
+/*----------------------------------------------------------------------------
+ * Frame relay specific link-level configuration.
+ */
+typedef struct wan_fr_conf
+{
+	unsigned signalling;	/* local in-channel signalling type */
+	unsigned t391;		/* link integrity verification timer */
+	unsigned t392;		/* polling verification timer */
+	unsigned n391;		/* full status polling cycle counter */
+	unsigned n392;		/* error threshold counter */
+	unsigned n393;		/* monitored events counter */
+	unsigned dlci_num;	/* number of DLCs (access node) */
+	unsigned  dlci[100];    /* List of all DLCIs */
+} wan_fr_conf_t;
+
+/*----------------------------------------------------------------------------
+ * PPP-specific link-level configuration.
+ */
+typedef struct wan_ppp_conf
+{
+	unsigned restart_tmr;	/* restart timer */
+	unsigned auth_rsrt_tmr;	/* authentication timer */
+	unsigned auth_wait_tmr;	/* authentication timer */
+	unsigned mdm_fail_tmr;	/* modem failure timer */
+	unsigned dtr_drop_tmr;	/* DTR drop timer */
+	unsigned connect_tmout;	/* connection timeout */
+	unsigned conf_retry;	/* max. retry */
+	unsigned term_retry;	/* max. retry */
+	unsigned fail_retry;	/* max. retry */
+	unsigned auth_retry;	/* max. retry */
+	unsigned auth_options;	/* authentication opt. */
+	unsigned ip_options;	/* IP options */
+	char	authenticator;	/* AUTHENTICATOR or not */
+	char	ip_mode;	/* Static/Host/Peer */
+} wan_ppp_conf_t;
+
+/*----------------------------------------------------------------------------
+ * CHDLC-specific link-level configuration.
+ */
+typedef struct wan_chdlc_conf
+{
+	unsigned char ignore_dcd;	/* Protocol options:		*/
+	unsigned char ignore_cts;	/*  Ignore these to determine	*/
+	unsigned char ignore_keepalive;	/*  link status (Yes or No)	*/
+	unsigned char hdlc_streaming;	/*  hdlc_streaming mode (Y/N) */
+	unsigned char receive_only;	/*  no transmit buffering (Y/N) */
+	unsigned keepalive_tx_tmr;	/* transmit keepalive timer */
+	unsigned keepalive_rx_tmr;	/* receive  keepalive timer */
+	unsigned keepalive_err_margin;	/* keepalive_error_tolerance */
+	unsigned slarp_timer;		/* SLARP request timer */
+} wan_chdlc_conf_t;
+
+
+/*----------------------------------------------------------------------------
+ * WAN device configuration. Passed to ROUTER_SETUP IOCTL.
+ */
+typedef struct wandev_conf
+{
+	unsigned magic;		/* magic number (for verification) */
+	unsigned config_id;	/* configuration structure identifier */
+				/****** hardware configuration ******/
+	unsigned ioport;	/* adapter I/O port base */
+	unsigned long maddr;	/* dual-port memory address */
+	unsigned msize;		/* dual-port memory size */
+	int irq;		/* interrupt request level */
+	int dma;		/* DMA request level */
+        char S514_CPU_no[1];	/* S514 PCI adapter CPU number ('A' or 'B') */
+        unsigned PCI_slot_no;	/* S514 PCI adapter slot number */
+	char auto_pci_cfg;	/* S515 PCI automatic slot detection */
+	char comm_port;		/* Communication Port (PRI=0, SEC=1) */ 
+	unsigned bps;		/* data transfer rate */
+	unsigned mtu;		/* maximum transmit unit size */
+        unsigned udp_port;      /* UDP port for management */
+	unsigned char ttl;	/* Time To Live for UDP security */
+	unsigned char ft1;	/* FT1 Configurator Option */
+        char interface;		/* RS-232/V.35, etc. */
+	char clocking;		/* external/internal */
+	char line_coding;	/* NRZ/NRZI/FM0/FM1, etc. */
+	char station;		/* DTE/DCE, primary/secondary, etc. */
+	char connection;	/* permanent/switched/on-demand */
+	char read_mode;		/* read mode: Polling or interrupt */
+	char receive_only;	/* disable tx buffers */
+	char tty;		/* Create a fake tty device */
+	unsigned tty_major;	/* Major number for wanpipe tty device */
+	unsigned tty_minor; 	/* Minor number for wanpipe tty device */
+	unsigned tty_mode;	/* TTY operation mode SYNC or ASYNC */
+	char backup;		/* Backup Mode */
+	unsigned hw_opt[4];	/* other hardware options */
+	unsigned reserved[4];
+				/****** arbitrary data ***************/
+	unsigned data_size;	/* data buffer size */
+	void* data;		/* data buffer, e.g. firmware */
+	union			/****** protocol-specific ************/
+	{
+		wan_x25_conf_t x25;	/* X.25 configuration */
+		wan_ppp_conf_t ppp;	/* PPP configuration */
+		wan_fr_conf_t fr;	/* frame relay configuration */
+		wan_chdlc_conf_t chdlc;	/* Cisco HDLC configuration */
+	} u;
+} wandev_conf_t;
+
+/* 'config_id' definitions */
+#define	WANCONFIG_X25	101	/* X.25 link */
+#define	WANCONFIG_FR	102	/* frame relay link */
+#define	WANCONFIG_PPP	103	/* synchronous PPP link */
+#define WANCONFIG_CHDLC	104	/* Cisco HDLC Link */
+#define WANCONFIG_BSC	105	/* BiSync Streaming */
+#define WANCONFIG_HDLC	106	/* HDLC Support */
+#define WANCONFIG_MPPP  107	/* Multi Port PPP over RAW CHDLC */
+
+/*
+ * Configuration options defines.
+ */
+/* general options */
+#define	WANOPT_OFF	0
+#define	WANOPT_ON	1
+#define	WANOPT_NO	0
+#define	WANOPT_YES	1
+
+/* intercace options */
+#define	WANOPT_RS232	0
+#define	WANOPT_V35	1
+
+/* data encoding options */
+#define	WANOPT_NRZ	0
+#define	WANOPT_NRZI	1
+#define	WANOPT_FM0	2
+#define	WANOPT_FM1	3
+
+/* link type options */
+#define	WANOPT_POINTTOPOINT	0	/* RTS always active */
+#define	WANOPT_MULTIDROP	1	/* RTS is active when transmitting */
+
+/* clocking options */
+#define	WANOPT_EXTERNAL	0
+#define	WANOPT_INTERNAL	1
+
+/* station options */
+#define	WANOPT_DTE		0
+#define	WANOPT_DCE		1
+#define	WANOPT_CPE		0
+#define	WANOPT_NODE		1
+#define	WANOPT_SECONDARY	0
+#define	WANOPT_PRIMARY		1
+
+/* connection options */
+#define	WANOPT_PERMANENT	0	/* DTR always active */
+#define	WANOPT_SWITCHED		1	/* use DTR to setup link (dial-up) */
+#define	WANOPT_ONDEMAND		2	/* activate DTR only before sending */
+
+/* frame relay in-channel signalling */
+#define	WANOPT_FR_ANSI		1	/* ANSI T1.617 Annex D */
+#define	WANOPT_FR_Q933		2	/* ITU Q.933A */
+#define	WANOPT_FR_LMI		3	/* LMI */
+
+/* PPP IP Mode Options */
+#define	WANOPT_PPP_STATIC	0
+#define	WANOPT_PPP_HOST		1
+#define	WANOPT_PPP_PEER		2
+
+/* ASY Mode Options */
+#define WANOPT_ONE 		1
+#define WANOPT_TWO		2
+#define WANOPT_ONE_AND_HALF	3
+
+#define WANOPT_NONE	0
+#define WANOPT_ODD      1
+#define WANOPT_EVEN	2
+
+/* CHDLC Protocol Options */
+/* DF Commmented out for now.
+
+#define WANOPT_CHDLC_NO_DCD		IGNORE_DCD_FOR_LINK_STAT
+#define WANOPT_CHDLC_NO_CTS		IGNORE_CTS_FOR_LINK_STAT
+#define WANOPT_CHDLC_NO_KEEPALIVE	IGNORE_KPALV_FOR_LINK_STAT
+*/
+
+/* Port options */
+#define WANOPT_PRI 0
+#define WANOPT_SEC 1
+/* read mode */
+#define	WANOPT_INTR	0
+#define WANOPT_POLL	1
+
+
+#define WANOPT_TTY_SYNC  0
+#define WANOPT_TTY_ASYNC 1
+/*----------------------------------------------------------------------------
+ * WAN Link Status Info (for ROUTER_STAT IOCTL).
+ */
+typedef struct wandev_stat
+{
+	unsigned state;		/* link state */
+	unsigned ndev;		/* number of configured interfaces */
+
+	/* link/interface configuration */
+	unsigned connection;	/* permanent/switched/on-demand */
+	unsigned media_type;	/* Frame relay/PPP/X.25/SDLC, etc. */
+	unsigned mtu;		/* max. transmit unit for this device */
+
+	/* physical level statistics */
+	unsigned modem_status;	/* modem status */
+	unsigned rx_frames;	/* received frames count */
+	unsigned rx_overruns;	/* receiver overrun error count */
+	unsigned rx_crc_err;	/* receive CRC error count */
+	unsigned rx_aborts;	/* received aborted frames count */
+	unsigned rx_bad_length;	/* unexpetedly long/short frames count */
+	unsigned rx_dropped;	/* frames discarded at device level */
+	unsigned tx_frames;	/* transmitted frames count */
+	unsigned tx_underruns;	/* aborted transmissions (underruns) count */
+	unsigned tx_timeouts;	/* transmission timeouts */
+	unsigned tx_rejects;	/* other transmit errors */
+
+	/* media level statistics */
+	unsigned rx_bad_format;	/* frames with invalid format */
+	unsigned rx_bad_addr;	/* frames with invalid media address */
+	unsigned tx_retries;	/* frames re-transmitted */
+	unsigned reserved[16];	/* reserved for future use */
+} wandev_stat_t;
+
+/* 'state' defines */
+enum wan_states
+{
+	WAN_UNCONFIGURED,	/* link/channel is not configured */
+	WAN_DISCONNECTED,	/* link/channel is disconnected */
+	WAN_CONNECTING,		/* connection is in progress */
+	WAN_CONNECTED,		/* link/channel is operational */
+	WAN_LIMIT,		/* for verification only */
+	WAN_DUALPORT,		/* for Dual Port cards */
+	WAN_DISCONNECTING,
+	WAN_FT1_READY		/* FT1 Configurator Ready */
+};
+
+enum {
+	WAN_LOCAL_IP,
+	WAN_POINTOPOINT_IP,
+	WAN_NETMASK_IP,
+	WAN_BROADCAST_IP
+};
+
+/* 'modem_status' masks */
+#define	WAN_MODEM_CTS	0x0001	/* CTS line active */
+#define	WAN_MODEM_DCD	0x0002	/* DCD line active */
+#define	WAN_MODEM_DTR	0x0010	/* DTR line active */
+#define	WAN_MODEM_RTS	0x0020	/* RTS line active */
+
+/*----------------------------------------------------------------------------
+ * WAN interface (logical channel) configuration (for ROUTER_IFNEW IOCTL).
+ */
+typedef struct wanif_conf
+{
+	unsigned magic;			/* magic number */
+	unsigned config_id;		/* configuration identifier */
+	char name[WAN_IFNAME_SZ+1];	/* interface name, ASCIIZ */
+	char addr[WAN_ADDRESS_SZ+1];	/* media address, ASCIIZ */
+	char usedby[USED_BY_FIELD];	/* used by API or WANPIPE */
+	unsigned idle_timeout;		/* sec, before disconnecting */
+	unsigned hold_timeout;		/* sec, before re-connecting */
+	unsigned cir;			/* Committed Information Rate fwd,bwd*/
+	unsigned bc;			/* Committed Burst Size fwd, bwd */
+	unsigned be;			/* Excess Burst Size fwd, bwd */ 
+	unsigned char enable_IPX;	/* Enable or Disable IPX */
+	unsigned char inarp;		/* Send Inverse ARP requests Y/N */
+	unsigned inarp_interval;	/* sec, between InARP requests */
+	unsigned long network_number;	/* Network Number for IPX */
+	char mc;			/* Multicast on or off */
+	char local_addr[WAN_ADDRESS_SZ+1];/* local media address, ASCIIZ */
+	unsigned char port;		/* board port */
+	unsigned char protocol;		/* prococol used in this channel (TCPOX25 or X25) */
+	char pap;			/* PAP enabled or disabled */
+	char chap;			/* CHAP enabled or disabled */
+	unsigned char userid[511];	/* List of User Id */
+	unsigned char passwd[511];	/* List of passwords */
+	unsigned char sysname[31];	/* Name of the system */
+	unsigned char ignore_dcd;	/* Protocol options: */
+	unsigned char ignore_cts;	/*  Ignore these to determine */
+	unsigned char ignore_keepalive;	/*  link status (Yes or No) */
+	unsigned char hdlc_streaming;	/*  Hdlc streaming mode (Y/N) */
+	unsigned keepalive_tx_tmr;	/* transmit keepalive timer */
+	unsigned keepalive_rx_tmr;	/* receive  keepalive timer */
+	unsigned keepalive_err_margin;	/* keepalive_error_tolerance */
+	unsigned slarp_timer;		/* SLARP request timer */
+	unsigned char ttl;		/* Time To Live for UDP security */
+	char interface;			/* RS-232/V.35, etc. */
+	char clocking;			/* external/internal */
+	unsigned bps;			/* data transfer rate */
+	unsigned mtu;			/* maximum transmit unit size */
+	unsigned char if_down;		/* brind down interface when disconnected */
+	unsigned char gateway;		/* Is this interface a gateway */
+	unsigned char true_if_encoding;	/* Set the dev->type to true board protocol */
+
+	unsigned char asy_data_trans;     /* async API options */
+        unsigned char rts_hs_for_receive; /* async Protocol options */
+        unsigned char xon_xoff_hs_for_receive;
+	unsigned char xon_xoff_hs_for_transmit;
+	unsigned char dcd_hs_for_transmit;
+	unsigned char cts_hs_for_transmit;
+	unsigned char async_mode;
+	unsigned tx_bits_per_char;
+	unsigned rx_bits_per_char;
+	unsigned stop_bits;  
+	unsigned char parity;
+ 	unsigned break_timer;
+        unsigned inter_char_timer;
+	unsigned rx_complete_length;
+	unsigned xon_char;
+	unsigned xoff_char;
+	unsigned char receive_only;	/*  no transmit buffering (Y/N) */
+} wanif_conf_t;
+
+#ifdef	__KERNEL__
+/****** Kernel Interface ****************************************************/
+
+#include <linux/fs.h>		/* support for device drivers */
+#include <linux/proc_fs.h>	/* proc filesystem pragmatics */
+#include <linux/netdevice.h>	/* support for network drivers */
+/*----------------------------------------------------------------------------
+ * WAN device data space.
+ */
+struct wan_device {
+	unsigned magic;			/* magic number */
+	char* name;			/* -> WAN device name (ASCIIZ) */
+	void* private;			/* -> driver private data */
+	unsigned config_id;		/* Configuration ID */
+					/****** hardware configuration ******/
+	unsigned ioport;		/* adapter I/O port base #1 */
+	char S514_cpu_no[1];		/* PCI CPU Number */
+	unsigned char S514_slot_no;	/* PCI Slot Number */
+	unsigned long maddr;		/* dual-port memory address */
+	unsigned msize;			/* dual-port memory size */
+	int irq;			/* interrupt request level */
+	int dma;			/* DMA request level */
+	unsigned bps;			/* data transfer rate */
+	unsigned mtu;			/* max physical transmit unit size */
+	unsigned udp_port;              /* UDP port for management */
+        unsigned char ttl;		/* Time To Live for UDP security */
+	unsigned enable_tx_int; 	/* Transmit Interrupt enabled or not */
+	char interface;			/* RS-232/V.35, etc. */
+	char clocking;			/* external/internal */
+	char line_coding;		/* NRZ/NRZI/FM0/FM1, etc. */
+	char station;			/* DTE/DCE, primary/secondary, etc. */
+	char connection;		/* permanent/switched/on-demand */
+	char signalling;		/* Signalling RS232 or V35 */
+	char read_mode;			/* read mode: Polling or interrupt */
+	char new_if_cnt;                /* Number of interfaces per wanpipe */ 
+	char del_if_cnt;		/* Number of times del_if() gets called */
+	unsigned char piggyback;        /* Piggibacking a port */
+	unsigned hw_opt[4];		/* other hardware options */
+					/****** status and statistics *******/
+	char state;			/* device state */
+	char api_status;		/* device api status */
+	struct net_device_stats stats; 	/* interface statistics */
+	unsigned reserved[16];		/* reserved for future use */
+	unsigned long critical;		/* critical section flag */
+	spinlock_t lock;                /* Support for SMP Locking */
+
+					/****** device management methods ***/
+	int (*setup) (struct wan_device *wandev, wandev_conf_t *conf);
+	int (*shutdown) (struct wan_device *wandev);
+	int (*update) (struct wan_device *wandev);
+	int (*ioctl) (struct wan_device *wandev, unsigned cmd,
+		unsigned long arg);
+	int (*new_if)(struct wan_device *wandev, struct net_device *dev,
+		      wanif_conf_t *conf);
+	int (*del_if)(struct wan_device *wandev, struct net_device *dev);
+					/****** maintained by the router ****/
+	struct wan_device* next;	/* -> next device */
+	struct net_device* dev;		/* list of network interfaces */
+	unsigned ndev;			/* number of interfaces */
+	struct proc_dir_entry *dent;	/* proc filesystem entry */
+};
+
+/* Public functions available for device drivers */
+extern int register_wan_device(struct wan_device *wandev);
+extern int unregister_wan_device(char *name);
+unsigned short wanrouter_type_trans(struct sk_buff *skb,
+				    struct net_device *dev);
+int wanrouter_encapsulate(struct sk_buff *skb, struct net_device *dev,
+			  unsigned short type);
+
+/* Proc interface functions. These must not be called by the drivers! */
+extern int wanrouter_proc_init(void);
+extern void wanrouter_proc_cleanup(void);
+extern int wanrouter_proc_add(struct wan_device *wandev);
+extern int wanrouter_proc_delete(struct wan_device *wandev);
+extern int wanrouter_ioctl( struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
+
+extern void lock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags);
+extern void unlock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags);
+
+
+
+/* Public Data */
+/* list of registered devices */
+extern struct wan_device *wanrouter_router_devlist;
+
+#endif	/* __KERNEL__ */
+#endif	/* _ROUTER_H */