1/*****************************************************************************
2* wanrouter.h	Definitions for the WAN Multiprotocol Router Module.
3*		This module provides API and common services for WAN Link
4*		Drivers and is completely hardware-independent.
5*
6* Author: 	Nenad Corbic <ncorbic@sangoma.com>
7*		Gideon Hack
8* Additions:	Arnaldo Melo
9*
10* Copyright:	(c) 1995-2000 Sangoma Technologies Inc.
11*
12*		This program is free software; you can redistribute it and/or
13*		modify it under the terms of the GNU General Public License
14*		as published by the Free Software Foundation; either version
15*		2 of the License, or (at your option) any later version.
16* ============================================================================
17* Jul 21, 2000  Nenad Corbic	Added WAN_FT1_READY State
18* Feb 24, 2000  Nenad Corbic    Added support for socket based x25api
19* Jan 28, 2000  Nenad Corbic    Added support for the ASYNC protocol.
20* Oct 04, 1999  Nenad Corbic 	Updated for 2.1.0 release
21* Jun 02, 1999  Gideon Hack	Added support for the S514 adapter.
22* May 23, 1999	Arnaldo Melo	Added local_addr to wanif_conf_t
23*				WAN_DISCONNECTING state added
24* Jul 20, 1998	David Fong	Added Inverse ARP options to 'wanif_conf_t'
25* Jun 12, 1998	David Fong	Added Cisco HDLC support.
26* Dec 16, 1997	Jaspreet Singh	Moved 'enable_IPX' and 'network_number' to
27*				'wanif_conf_t'
28* Dec 05, 1997	Jaspreet Singh	Added 'pap', 'chap' to 'wanif_conf_t'
29*				Added 'authenticator' to 'wan_ppp_conf_t'
30* Nov 06, 1997	Jaspreet Singh	Changed Router Driver version to 1.1 from 1.0
31* Oct 20, 1997	Jaspreet Singh	Added 'cir','bc','be' and 'mc' to 'wanif_conf_t'
32*				Added 'enable_IPX' and 'network_number' to
33*				'wan_device_t'.  Also added defines for
34*				UDP PACKET TYPE, Interrupt test, critical values
35*				for RACE conditions.
36* Oct 05, 1997	Jaspreet Singh	Added 'dlci_num' and 'dlci[100]' to
37*				'wan_fr_conf_t' to configure a list of dlci(s)
38*				for a NODE
39* Jul 07, 1997	Jaspreet Singh	Added 'ttl' to 'wandev_conf_t' & 'wan_device_t'
40* May 29, 1997 	Jaspreet Singh	Added 'tx_int_enabled' to 'wan_device_t'
41* May 21, 1997	Jaspreet Singh	Added 'udp_port' to 'wan_device_t'
42* Apr 25, 1997  Farhan Thawar   Added 'udp_port' to 'wandev_conf_t'
43* Jan 16, 1997	Gene Kozin	router_devlist made public
44* Jan 02, 1997	Gene Kozin	Initial version (based on wanpipe.h).
45*****************************************************************************/
46#include <linux/version.h>
47
48#ifndef KERNEL_VERSION
49  #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
50#endif
51
52#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
53 #define LINUX_2_4
54 #define netdevice_t struct net_device
55 #include <linux/spinlock.h>       /* Support for SMP Locking */
56
57#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
58 #define LINUX_2_1
59 #define netdevice_t struct device
60 #include <asm/spinlock.h>       /* Support for SMP Locking */
61
62#else
63 #define LINUX_2_0
64 #define netdevice_t struct device
65 #define spinlock_t int
66#endif
67
68#ifndef	_ROUTER_H
69#define	_ROUTER_H
70
71#define	ROUTER_NAME	"wanrouter"	/* in case we ever change it */
72#define	ROUTER_VERSION	1		/* version number */
73#define	ROUTER_RELEASE	1		/* release (minor version) number */
74#define	ROUTER_IOCTL	'W'		/* for IOCTL calls */
75#define	ROUTER_MAGIC	0x524D4157L	/* signature: 'WANR' reversed */
76
77/* IOCTL codes for /proc/router/<device> entries (up to 255) */
78enum router_ioctls
79{
80	ROUTER_SETUP	= ROUTER_IOCTL<<8,	/* configure device */
81	ROUTER_DOWN,				/* shut down device */
82	ROUTER_STAT,				/* get device status */
83	ROUTER_IFNEW,				/* add interface */
84	ROUTER_IFDEL,				/* delete interface */
85	ROUTER_IFSTAT,				/* get interface status */
86	ROUTER_USER	= (ROUTER_IOCTL<<8)+16,	/* driver-specific calls */
87	ROUTER_USER_MAX	= (ROUTER_IOCTL<<8)+31
88};
89
90/* identifiers for displaying proc file data for dual port adapters */
91#define PROC_DATA_PORT_0 0x8000	/* the data is for port 0 */
92#define PROC_DATA_PORT_1 0x8001	/* the data is for port 1 */
93
94/* NLPID for packet encapsulation (ISO/IEC TR 9577) */
95#define	NLPID_IP	0xCC	/* Internet Protocol Datagram */
96#define	NLPID_SNAP	0x80	/* IEEE Subnetwork Access Protocol */
97#define	NLPID_CLNP	0x81	/* ISO/IEC 8473 */
98#define	NLPID_ESIS	0x82	/* ISO/IEC 9542 */
99#define	NLPID_ISIS	0x83	/* ISO/IEC ISIS */
100#define	NLPID_Q933	0x08	/* CCITT Q.933 */
101
102/* Miscellaneous */
103#define	WAN_IFNAME_SZ	15	/* max length of the interface name */
104#define	WAN_DRVNAME_SZ	15	/* max length of the link driver name */
105#define	WAN_ADDRESS_SZ	31	/* max length of the WAN media address */
106#define USED_BY_FIELD	8	/* max length of the used by field */
107
108/* Defines for UDP PACKET TYPE */
109#define UDP_PTPIPE_TYPE 	0x01
110#define UDP_FPIPE_TYPE		0x02
111#define UDP_CPIPE_TYPE		0x03
112#define UDP_DRVSTATS_TYPE 	0x04
113#define UDP_INVALID_TYPE  	0x05
114
115/* Command return code */
116#define CMD_OK		0		/* normal firmware return code */
117#define CMD_TIMEOUT	0xFF		/* firmware command timed out */
118
119/* UDP Packet Management */
120#define UDP_PKT_FRM_STACK	0x00
121#define UDP_PKT_FRM_NETWORK	0x01
122
123/* Maximum interrupt test counter */
124#define MAX_INTR_TEST_COUNTER	100
125
126/* Critical Values for RACE conditions*/
127#define CRITICAL_IN_ISR		0xA1
128#define CRITICAL_INTR_HANDLED	0xB1
129
130/****** Data Types **********************************************************/
131
132/*----------------------------------------------------------------------------
133 * X.25-specific link-level configuration.
134 */
135typedef struct wan_x25_conf
136{
137	unsigned lo_pvc;	/* lowest permanent circuit number */
138	unsigned hi_pvc;	/* highest permanent circuit number */
139	unsigned lo_svc;	/* lowest switched circuit number */
140	unsigned hi_svc;	/* highest switched circuit number */
141	unsigned hdlc_window;	/* HDLC window size (1..7) */
142	unsigned pkt_window;	/* X.25 packet window size (1..7) */
143	unsigned t1;		/* HDLC timer T1, sec (1..30) */
144	unsigned t2;		/* HDLC timer T2, sec (0..29) */
145	unsigned t4;		/* HDLC supervisory frame timer = T4 * T1 */
146	unsigned n2;		/* HDLC retransmission limit (1..30) */
147	unsigned t10_t20;	/* X.25 RESTART timeout, sec (1..255) */
148	unsigned t11_t21;	/* X.25 CALL timeout, sec (1..255) */
149	unsigned t12_t22;	/* X.25 RESET timeout, sec (1..255) */
150	unsigned t13_t23;	/* X.25 CLEAR timeout, sec (1..255) */
151	unsigned t16_t26;	/* X.25 INTERRUPT timeout, sec (1..255) */
152	unsigned t28;		/* X.25 REGISTRATION timeout, sec (1..255) */
153	unsigned r10_r20;	/* RESTART retransmission limit (0..250) */
154	unsigned r12_r22;	/* RESET retransmission limit (0..250) */
155	unsigned r13_r23;	/* CLEAR retransmission limit (0..250) */
156	unsigned ccitt_compat;	/* compatibility mode: 1988/1984/1980 */
157	unsigned x25_conf_opt;   /* User defined x25 config optoins */
158	unsigned char LAPB_hdlc_only; /* Run in HDLC only mode */
159	unsigned char logging;   /* Control connection logging */
160	unsigned char oob_on_modem; /* Whether to send modem status to the user app */
161} wan_x25_conf_t;
162
163/*----------------------------------------------------------------------------
164 * Frame relay specific link-level configuration.
165 */
166typedef struct wan_fr_conf
167{
168	unsigned signalling;	/* local in-channel signalling type */
169	unsigned t391;		/* link integrity verification timer */
170	unsigned t392;		/* polling verification timer */
171	unsigned n391;		/* full status polling cycle counter */
172	unsigned n392;		/* error threshold counter */
173	unsigned n393;		/* monitored events counter */
174	unsigned dlci_num;	/* number of DLCs (access node) */
175	unsigned  dlci[100];    /* List of all DLCIs */
176} wan_fr_conf_t;
177
178/*----------------------------------------------------------------------------
179 * PPP-specific link-level configuration.
180 */
181typedef struct wan_ppp_conf
182{
183	unsigned restart_tmr;	/* restart timer */
184	unsigned auth_rsrt_tmr;	/* authentication timer */
185	unsigned auth_wait_tmr;	/* authentication timer */
186	unsigned mdm_fail_tmr;	/* modem failure timer */
187	unsigned dtr_drop_tmr;	/* DTR drop timer */
188	unsigned connect_tmout;	/* connection timeout */
189	unsigned conf_retry;	/* max. retry */
190	unsigned term_retry;	/* max. retry */
191	unsigned fail_retry;	/* max. retry */
192	unsigned auth_retry;	/* max. retry */
193	unsigned auth_options;	/* authentication opt. */
194	unsigned ip_options;	/* IP options */
195	char	authenticator;	/* AUTHENTICATOR or not */
196	char	ip_mode;	/* Static/Host/Peer */
197} wan_ppp_conf_t;
198
199/*----------------------------------------------------------------------------
200 * CHDLC-specific link-level configuration.
201 */
202typedef struct wan_chdlc_conf
203{
204	unsigned char ignore_dcd;	/* Protocol options:		*/
205	unsigned char ignore_cts;	/*  Ignore these to determine	*/
206	unsigned char ignore_keepalive;	/*  link status (Yes or No)	*/
207	unsigned char hdlc_streaming;	/*  hdlc_streaming mode (Y/N) */
208	unsigned char receive_only;	/*  no transmit buffering (Y/N) */
209	unsigned keepalive_tx_tmr;	/* transmit keepalive timer */
210	unsigned keepalive_rx_tmr;	/* receive  keepalive timer */
211	unsigned keepalive_err_margin;	/* keepalive_error_tolerance */
212	unsigned slarp_timer;		/* SLARP request timer */
213} wan_chdlc_conf_t;
214
215
216/*----------------------------------------------------------------------------
217 * WAN device configuration. Passed to ROUTER_SETUP IOCTL.
218 */
219typedef struct wandev_conf
220{
221	unsigned magic;		/* magic number (for verification) */
222	unsigned config_id;	/* configuration structure identifier */
223				/****** hardware configuration ******/
224	unsigned ioport;	/* adapter I/O port base */
225	unsigned long maddr;	/* dual-port memory address */
226	unsigned msize;		/* dual-port memory size */
227	int irq;		/* interrupt request level */
228	int dma;		/* DMA request level */
229        char S514_CPU_no[1];	/* S514 PCI adapter CPU number ('A' or 'B') */
230        unsigned PCI_slot_no;	/* S514 PCI adapter slot number */
231	char auto_pci_cfg;	/* S515 PCI automatic slot detection */
232	char comm_port;		/* Communication Port (PRI=0, SEC=1) */
233	unsigned bps;		/* data transfer rate */
234	unsigned mtu;		/* maximum transmit unit size */
235        unsigned udp_port;      /* UDP port for management */
236	unsigned char ttl;	/* Time To Live for UDP security */
237	unsigned char ft1;	/* FT1 Configurator Option */
238        char interface;		/* RS-232/V.35, etc. */
239	char clocking;		/* external/internal */
240	char line_coding;	/* NRZ/NRZI/FM0/FM1, etc. */
241	char station;		/* DTE/DCE, primary/secondary, etc. */
242	char connection;	/* permanent/switched/on-demand */
243	char read_mode;		/* read mode: Polling or interrupt */
244	char receive_only;	/* disable tx buffers */
245	char tty;		/* Create a fake tty device */
246	unsigned tty_major;	/* Major number for wanpipe tty device */
247	unsigned tty_minor; 	/* Minor number for wanpipe tty device */
248	unsigned tty_mode;	/* TTY operation mode SYNC or ASYNC */
249	char backup;		/* Backup Mode */
250	unsigned hw_opt[4];	/* other hardware options */
251	unsigned reserved[4];
252				/****** arbitrary data ***************/
253	unsigned data_size;	/* data buffer size */
254	void* data;		/* data buffer, e.g. firmware */
255	union			/****** protocol-specific ************/
256	{
257		wan_x25_conf_t x25;	/* X.25 configuration */
258		wan_ppp_conf_t ppp;	/* PPP configuration */
259		wan_fr_conf_t fr;	/* frame relay configuration */
260		wan_chdlc_conf_t chdlc;	/* Cisco HDLC configuration */
261	} u;
262} wandev_conf_t;
263
264/* 'config_id' definitions */
265#define	WANCONFIG_X25	101	/* X.25 link */
266#define	WANCONFIG_FR	102	/* frame relay link */
267#define	WANCONFIG_PPP	103	/* synchronous PPP link */
268#define WANCONFIG_CHDLC	104	/* Cisco HDLC Link */
269#define WANCONFIG_BSC	105	/* BiSync Streaming */
270#define WANCONFIG_HDLC	106	/* HDLC Support */
271#define WANCONFIG_MPPP  107	/* Multi Port PPP over RAW CHDLC */
272
273/*
274 * Configuration options defines.
275 */
276/* general options */
277#define	WANOPT_OFF	0
278#define	WANOPT_ON	1
279#define	WANOPT_NO	0
280#define	WANOPT_YES	1
281
282/* intercace options */
283#define	WANOPT_RS232	0
284#define	WANOPT_V35	1
285
286/* data encoding options */
287#define	WANOPT_NRZ	0
288#define	WANOPT_NRZI	1
289#define	WANOPT_FM0	2
290#define	WANOPT_FM1	3
291
292/* link type options */
293#define	WANOPT_POINTTOPOINT	0	/* RTS always active */
294#define	WANOPT_MULTIDROP	1	/* RTS is active when transmitting */
295
296/* clocking options */
297#define	WANOPT_EXTERNAL	0
298#define	WANOPT_INTERNAL	1
299
300/* station options */
301#define	WANOPT_DTE		0
302#define	WANOPT_DCE		1
303#define	WANOPT_CPE		0
304#define	WANOPT_NODE		1
305#define	WANOPT_SECONDARY	0
306#define	WANOPT_PRIMARY		1
307
308/* connection options */
309#define	WANOPT_PERMANENT	0	/* DTR always active */
310#define	WANOPT_SWITCHED		1	/* use DTR to setup link (dial-up) */
311#define	WANOPT_ONDEMAND		2	/* activate DTR only before sending */
312
313/* frame relay in-channel signalling */
314#define	WANOPT_FR_ANSI		1	/* ANSI T1.617 Annex D */
315#define	WANOPT_FR_Q933		2	/* ITU Q.933A */
316#define	WANOPT_FR_LMI		3	/* LMI */
317
318/* PPP IP Mode Options */
319#define	WANOPT_PPP_STATIC	0
320#define	WANOPT_PPP_HOST		1
321#define	WANOPT_PPP_PEER		2
322
323/* ASY Mode Options */
324#define WANOPT_ONE 		1
325#define WANOPT_TWO		2
326#define WANOPT_ONE_AND_HALF	3
327
328#define WANOPT_NONE	0
329#define WANOPT_ODD      1
330#define WANOPT_EVEN	2
331
332/* CHDLC Protocol Options */
333/* DF Commmented out for now.
334
335#define WANOPT_CHDLC_NO_DCD		IGNORE_DCD_FOR_LINK_STAT
336#define WANOPT_CHDLC_NO_CTS		IGNORE_CTS_FOR_LINK_STAT
337#define WANOPT_CHDLC_NO_KEEPALIVE	IGNORE_KPALV_FOR_LINK_STAT
338*/
339
340/* Port options */
341#define WANOPT_PRI 0
342#define WANOPT_SEC 1
343/* read mode */
344#define	WANOPT_INTR	0
345#define WANOPT_POLL	1
346
347
348#define WANOPT_TTY_SYNC  0
349#define WANOPT_TTY_ASYNC 1
350/*----------------------------------------------------------------------------
351 * WAN Link Status Info (for ROUTER_STAT IOCTL).
352 */
353typedef struct wandev_stat
354{
355	unsigned state;		/* link state */
356	unsigned ndev;		/* number of configured interfaces */
357
358	/* link/interface configuration */
359	unsigned connection;	/* permanent/switched/on-demand */
360	unsigned media_type;	/* Frame relay/PPP/X.25/SDLC, etc. */
361	unsigned mtu;		/* max. transmit unit for this device */
362
363	/* physical level statistics */
364	unsigned modem_status;	/* modem status */
365	unsigned rx_frames;	/* received frames count */
366	unsigned rx_overruns;	/* receiver overrun error count */
367	unsigned rx_crc_err;	/* receive CRC error count */
368	unsigned rx_aborts;	/* received aborted frames count */
369	unsigned rx_bad_length;	/* unexpetedly long/short frames count */
370	unsigned rx_dropped;	/* frames discarded at device level */
371	unsigned tx_frames;	/* transmitted frames count */
372	unsigned tx_underruns;	/* aborted transmissions (underruns) count */
373	unsigned tx_timeouts;	/* transmission timeouts */
374	unsigned tx_rejects;	/* other transmit errors */
375
376	/* media level statistics */
377	unsigned rx_bad_format;	/* frames with invalid format */
378	unsigned rx_bad_addr;	/* frames with invalid media address */
379	unsigned tx_retries;	/* frames re-transmitted */
380	unsigned reserved[16];	/* reserved for future use */
381} wandev_stat_t;
382
383/* 'state' defines */
384enum wan_states
385{
386	WAN_UNCONFIGURED,	/* link/channel is not configured */
387	WAN_DISCONNECTED,	/* link/channel is disconnected */
388	WAN_CONNECTING,		/* connection is in progress */
389	WAN_CONNECTED,		/* link/channel is operational */
390	WAN_LIMIT,		/* for verification only */
391	WAN_DUALPORT,		/* for Dual Port cards */
392	WAN_DISCONNECTING,
393	WAN_FT1_READY		/* FT1 Configurator Ready */
394};
395
396enum {
397	WAN_LOCAL_IP,
398	WAN_POINTOPOINT_IP,
399	WAN_NETMASK_IP,
400	WAN_BROADCAST_IP
401};
402
403/* 'modem_status' masks */
404#define	WAN_MODEM_CTS	0x0001	/* CTS line active */
405#define	WAN_MODEM_DCD	0x0002	/* DCD line active */
406#define	WAN_MODEM_DTR	0x0010	/* DTR line active */
407#define	WAN_MODEM_RTS	0x0020	/* RTS line active */
408
409/*----------------------------------------------------------------------------
410 * WAN interface (logical channel) configuration (for ROUTER_IFNEW IOCTL).
411 */
412typedef struct wanif_conf
413{
414	unsigned magic;			/* magic number */
415	unsigned config_id;		/* configuration identifier */
416	char name[WAN_IFNAME_SZ+1];	/* interface name, ASCIIZ */
417	char addr[WAN_ADDRESS_SZ+1];	/* media address, ASCIIZ */
418	char usedby[USED_BY_FIELD];	/* used by API or WANPIPE */
419	unsigned idle_timeout;		/* sec, before disconnecting */
420	unsigned hold_timeout;		/* sec, before re-connecting */
421	unsigned cir;			/* Committed Information Rate fwd,bwd*/
422	unsigned bc;			/* Committed Burst Size fwd, bwd */
423	unsigned be;			/* Excess Burst Size fwd, bwd */
424	unsigned char enable_IPX;	/* Enable or Disable IPX */
425	unsigned char inarp;		/* Send Inverse ARP requests Y/N */
426	unsigned inarp_interval;	/* sec, between InARP requests */
427	unsigned long network_number;	/* Network Number for IPX */
428	char mc;			/* Multicast on or off */
429	char local_addr[WAN_ADDRESS_SZ+1];/* local media address, ASCIIZ */
430	unsigned char port;		/* board port */
431	unsigned char protocol;		/* prococol used in this channel (TCPOX25 or X25) */
432	char pap;			/* PAP enabled or disabled */
433	char chap;			/* CHAP enabled or disabled */
434	unsigned char userid[511];	/* List of User Id */
435	unsigned char passwd[511];	/* List of passwords */
436	unsigned char sysname[31];	/* Name of the system */
437	unsigned char ignore_dcd;	/* Protocol options: */
438	unsigned char ignore_cts;	/*  Ignore these to determine */
439	unsigned char ignore_keepalive;	/*  link status (Yes or No) */
440	unsigned char hdlc_streaming;	/*  Hdlc streaming mode (Y/N) */
441	unsigned keepalive_tx_tmr;	/* transmit keepalive timer */
442	unsigned keepalive_rx_tmr;	/* receive  keepalive timer */
443	unsigned keepalive_err_margin;	/* keepalive_error_tolerance */
444	unsigned slarp_timer;		/* SLARP request timer */
445	unsigned char ttl;		/* Time To Live for UDP security */
446	char interface;			/* RS-232/V.35, etc. */
447	char clocking;			/* external/internal */
448	unsigned bps;			/* data transfer rate */
449	unsigned mtu;			/* maximum transmit unit size */
450	unsigned char if_down;		/* brind down interface when disconnected */
451	unsigned char gateway;		/* Is this interface a gateway */
452	unsigned char true_if_encoding;	/* Set the dev->type to true board protocol */
453
454	unsigned char asy_data_trans;     /* async API options */
455        unsigned char rts_hs_for_receive; /* async Protocol options */
456        unsigned char xon_xoff_hs_for_receive;
457	unsigned char xon_xoff_hs_for_transmit;
458	unsigned char dcd_hs_for_transmit;
459	unsigned char cts_hs_for_transmit;
460	unsigned char async_mode;
461	unsigned tx_bits_per_char;
462	unsigned rx_bits_per_char;
463	unsigned stop_bits;
464	unsigned char parity;
465 	unsigned break_timer;
466        unsigned inter_char_timer;
467	unsigned rx_complete_length;
468	unsigned xon_char;
469	unsigned xoff_char;
470	unsigned char receive_only;	/*  no transmit buffering (Y/N) */
471} wanif_conf_t;
472
473#ifdef	__KERNEL__
474/****** Kernel Interface ****************************************************/
475
476#include <linux/fs.h>		/* support for device drivers */
477#include <linux/proc_fs.h>	/* proc filesystem pragmatics */
478#include <linux/netdevice.h>	/* support for network drivers */
479/*----------------------------------------------------------------------------
480 * WAN device data space.
481 */
482typedef struct wan_device
483{
484	unsigned magic;			/* magic number */
485	char* name;			/* -> WAN device name (ASCIIZ) */
486	void* private;			/* -> driver private data */
487	unsigned config_id;		/* Configuration ID */
488					/****** hardware configuration ******/
489	unsigned ioport;		/* adapter I/O port base #1 */
490	char S514_cpu_no[1];		/* PCI CPU Number */
491	unsigned char S514_slot_no;	/* PCI Slot Number */
492	unsigned long maddr;		/* dual-port memory address */
493	unsigned msize;			/* dual-port memory size */
494	int irq;			/* interrupt request level */
495	int dma;			/* DMA request level */
496	unsigned bps;			/* data transfer rate */
497	unsigned mtu;			/* max physical transmit unit size */
498	unsigned udp_port;              /* UDP port for management */
499        unsigned char ttl;		/* Time To Live for UDP security */
500	unsigned enable_tx_int; 	/* Transmit Interrupt enabled or not */
501	char interface;			/* RS-232/V.35, etc. */
502	char clocking;			/* external/internal */
503	char line_coding;		/* NRZ/NRZI/FM0/FM1, etc. */
504	char station;			/* DTE/DCE, primary/secondary, etc. */
505	char connection;		/* permanent/switched/on-demand */
506	char signalling;		/* Signalling RS232 or V35 */
507	char read_mode;			/* read mode: Polling or interrupt */
508	char new_if_cnt;                /* Number of interfaces per wanpipe */
509	char del_if_cnt;		/* Number of times del_if() gets called */
510	unsigned char piggyback;        /* Piggibacking a port */
511	unsigned hw_opt[4];		/* other hardware options */
512					/****** status and statistics *******/
513	char state;			/* device state */
514	char api_status;		/* device api status */
515#if defined(LINUX_2_1) || defined(LINUX_2_4)
516	struct net_device_stats stats; 	/* interface statistics */
517#else
518	struct enet_statistics stats;	/* interface statistics */
519#endif
520	unsigned reserved[16];		/* reserved for future use */
521	unsigned long critical;		/* critical section flag */
522	spinlock_t lock;                /* Support for SMP Locking */
523
524					/****** device management methods ***/
525	int (*setup) (struct wan_device *wandev, wandev_conf_t *conf);
526	int (*shutdown) (struct wan_device *wandev);
527	int (*update) (struct wan_device *wandev);
528	int (*ioctl) (struct wan_device *wandev, unsigned cmd,
529		unsigned long arg);
530	int (*new_if) (struct wan_device *wandev, netdevice_t *dev,
531		wanif_conf_t *conf);
532	int (*del_if) (struct wan_device *wandev, netdevice_t *dev);
533					/****** maintained by the router ****/
534	struct wan_device* next;	/* -> next device */
535	netdevice_t* dev;		/* list of network interfaces */
536	unsigned ndev;			/* number of interfaces */
537#ifdef LINUX_2_4
538	struct proc_dir_entry *dent;	/* proc filesystem entry */
539#else
540	struct proc_dir_entry dent;	/* proc filesystem entry */
541#endif
542} wan_device_t;
543
544/* Public functions available for device drivers */
545extern int register_wan_device(wan_device_t *wandev);
546extern int unregister_wan_device(char *name);
547unsigned short wanrouter_type_trans(struct sk_buff *skb, netdevice_t *dev);
548int wanrouter_encapsulate(struct sk_buff *skb, netdevice_t *dev,unsigned short type);
549
550/* Proc interface functions. These must not be called by the drivers! */
551extern int wanrouter_proc_init(void);
552extern void wanrouter_proc_cleanup(void);
553extern int wanrouter_proc_add(wan_device_t *wandev);
554extern int wanrouter_proc_delete(wan_device_t *wandev);
555extern int wanrouter_ioctl( struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
556
557extern void lock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags);
558extern void unlock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags);
559
560
561
562/* Public Data */
563extern wan_device_t *router_devlist;	/* list of registered devices */
564
565#endif	/* __KERNEL__ */
566#endif	/* _ROUTER_H */
567