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/*
* DLCI/FRAD Definitions for Frame Relay Access Devices. DLCI devices are
* created for each DLCI associated with a FRAD. The FRAD driver
* is not truly a network device, but the lower level device
* handler. This allows other FRAD manufacturers to use the DLCI
* code, including its RFC1490 encapsulation alongside the current
* implementation for the Sangoma cards.
*
* Version: @(#)if_ifrad.h 0.15 31 Mar 96
*
* Author: Mike McLagan <mike.mclagan@linux.org>
*
* Changes:
* 0.15 Mike McLagan changed structure defs (packed)
* re-arranged flags
* added DLCI_RET vars
*
* 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.
*/
#ifndef _FRAD_H_
#define _FRAD_H_
#include <linux/config.h>
#include <linux/if.h>
#if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
/* Structures and constants associated with the DLCI device driver */
struct dlci_add
{
char devname[IFNAMSIZ];
short dlci;
};
#define DLCI_GET_CONF (SIOCDEVPRIVATE + 2)
#define DLCI_SET_CONF (SIOCDEVPRIVATE + 3)
/*
* These are related to the Sangoma SDLA and should remain in order.
* Code within the SDLA module is based on the specifics of this
* structure. Change at your own peril.
*/
struct dlci_conf {
short flags;
short CIR_fwd;
short Bc_fwd;
short Be_fwd;
short CIR_bwd;
short Bc_bwd;
short Be_bwd;
/* these are part of the status read */
short Tc_fwd;
short Tc_bwd;
short Tf_max;
short Tb_max;
/* add any new fields here above is a mirror of sdla_dlci_conf */
};
#define DLCI_GET_SLAVE (SIOCDEVPRIVATE + 4)
/* configuration flags for DLCI */
#define DLCI_IGNORE_CIR_OUT 0x0001
#define DLCI_ACCOUNT_CIR_IN 0x0002
#define DLCI_BUFFER_IF 0x0008
#define DLCI_VALID_FLAGS 0x000B
/* FRAD driver uses these to indicate what it did with packet */
#define DLCI_RET_OK 0x00
#define DLCI_RET_ERR 0x01
#define DLCI_RET_DROP 0x02
/* defines for the actual Frame Relay hardware */
#define FRAD_GET_CONF (SIOCDEVPRIVATE)
#define FRAD_SET_CONF (SIOCDEVPRIVATE + 1)
#define FRAD_LAST_IOCTL FRAD_SET_CONF
/*
* Based on the setup for the Sangoma SDLA. If changes are
* necessary to this structure, a routine will need to be
* added to that module to copy fields.
*/
struct frad_conf
{
short station;
short flags;
short kbaud;
short clocking;
short mtu;
short T391;
short T392;
short N391;
short N392;
short N393;
short CIR_fwd;
short Bc_fwd;
short Be_fwd;
short CIR_bwd;
short Bc_bwd;
short Be_bwd;
/* Add new fields here, above is a mirror of the sdla_conf */
};
#define FRAD_STATION_CPE 0x0000
#define FRAD_STATION_NODE 0x0001
#define FRAD_TX_IGNORE_CIR 0x0001
#define FRAD_RX_ACCOUNT_CIR 0x0002
#define FRAD_DROP_ABORTED 0x0004
#define FRAD_BUFFERIF 0x0008
#define FRAD_STATS 0x0010
#define FRAD_MCI 0x0100
#define FRAD_AUTODLCI 0x8000
#define FRAD_VALID_FLAGS 0x811F
#define FRAD_CLOCK_INT 0x0001
#define FRAD_CLOCK_EXT 0x0000
#ifdef __KERNEL__
/* these are the fields of an RFC 1490 header */
struct frhdr
{
unsigned char control __attribute__((packed));
/* for IP packets, this can be the NLPID */
unsigned char pad __attribute__((packed));
unsigned char NLPID __attribute__((packed));
unsigned char OUI[3] __attribute__((packed));
unsigned short PID __attribute__((packed));
#define IP_NLPID pad
};
/* see RFC 1490 for the definition of the following */
#define FRAD_I_UI 0x03
#define FRAD_P_PADDING 0x00
#define FRAD_P_Q933 0x08
#define FRAD_P_SNAP 0x80
#define FRAD_P_CLNP 0x81
#define FRAD_P_IP 0xCC
struct dlci_local
{
struct net_device_stats stats;
struct net_device *slave;
struct dlci_conf config;
int configured;
/* callback function */
void (*receive)(struct sk_buff *skb, struct net_device *);
};
struct frad_local
{
struct net_device_stats stats;
/* devices which this FRAD is slaved to */
struct net_device *master[CONFIG_DLCI_MAX];
short dlci[CONFIG_DLCI_MAX];
struct frad_conf config;
int configured; /* has this device been configured */
int initialized; /* mem_start, port, irq set ? */
/* callback functions */
int (*activate)(struct net_device *, struct net_device *);
int (*deactivate)(struct net_device *, struct net_device *);
int (*assoc)(struct net_device *, struct net_device *);
int (*deassoc)(struct net_device *, struct net_device *);
int (*dlci_conf)(struct net_device *, struct net_device *, int get);
/* fields that are used by the Sangoma SDLA cards */
struct timer_list timer;
int type; /* adapter type */
int state; /* state of the S502/8 control latch */
int buffer; /* current buffer for S508 firmware */
};
int register_frad(const char *name);
int unregister_frad(const char *name);
int (*dlci_ioctl_hook)(unsigned int, void *);
#endif __KERNEL__
#endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
#endif
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