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