wanrouter.h

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/*
 * 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

/* 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

/*----------------------------------------------------------------------------
 * 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	/* link/channel is disconnecting */
};

/* '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 */
} 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/inet.h>		/* in_aton(), in_ntoa() prototypes */
#include <linux/netdevice.h>	/* support for network drivers */
/*----------------------------------------------------------------------------
 * WAN device data space.
 */
typedef 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 */
					/****** 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 */
} wan_device_t;

/* Public functions available for device drivers */
extern int register_wan_device(wan_device_t *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);

/* 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(wan_device_t *wandev);
extern int wanrouter_proc_delete(wan_device_t *wandev);
extern int wanrouter_ioctl( struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);

/* Public Data */
extern wan_device_t *router_devlist;	/* list of registered devices */

#endif	/* __KERNEL__ */
#endif	/* _ROUTER_H */