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if_eco.h
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if_eco.h
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/* $NetBSD: if_eco.h,v 1.6.52.1 2008/02/18 21:07:01 mjf Exp $ */
/*-
* Copyright (c) 2001 Ben Harris
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _NET_IF_ECO_H_
#define _NET_IF_ECO_H_
#include <sys/callout.h>
#include <sys/mbuf.h>
#include <sys/queue.h>
#include <net/if.h>
/*
* Econet headers come in two forms. The initial frame of an exchange
* has source and destination addresses, a control byte and a port.
* Later frames just have source and destination addresses.
*
* Complete packets are generally passed around with the full header on,
* even if this means assembling them from two separate frames.
*/
#define ECO_ADDR_LEN 2 /* Length of an Econet address */
#define ECO_HDR_LEN 6 /* Two addresses, a port and a control byte */
#define ECO_SHDR_LEN 4 /* "Short" Econet header: just two addresses */
/* #define ECO_MTU 8192 * Default MTU */
#define ECO_IPMTU 1280 /* MTU for IP used by RISC iX */
#define ECO_MTU ECO_IPMTU
struct eco_header {
u_int8_t eco_dhost[ECO_ADDR_LEN];
u_int8_t eco_shost[ECO_ADDR_LEN];
u_int8_t eco_control;
u_int8_t eco_port;
} __packed;
#define ECO_PORT_IMMEDIATE 0x00
#define ECO_PORT_DSTAPE 0x54 /* DigitalServicesTapeStore */
#define ECO_PORT_FS 0x99 /* FileServerCommand */
#define ECO_PORT_BRIDGE 0x9C /* Bridge */
#define ECO_PORT_PSINQREP 0x9E /* PrinterServerInquiryReply */
#define ECO_PORT_PSINQ 0x9F /* PrinterServerInquiry */
#define ECO_PORT_FAST 0xA0 /* SJ *FAST protocol */
#define ECO_PORT_NEXNETFIND 0xA1 /* SJ Nexus net find reply port */
#define ECO_PORT_FINDSRV 0xB0 /* FindServer */
#define ECO_PORT_FINDSRVREP 0xB1 /* FindServerReply */
#define ECO_PORT_TTXTCMD 0xB2 /* TeletextServerCommand */
#define ECO_PORT_TTXTPAGE 0xB3 /* TeletextServerPage */
#define ECO_PORT_OLDPSDATA 0xD0 /* OldPrinterServer */
#define ECO_PORT_PSDATA 0xD1 /* PrinterServer */
#define ECO_PORT_IP 0xD2 /* TCPIPProtocolSuite */
#define ECO_PORT_SIDSLAVE 0xD3 /* SIDFrameSlave */
#define ECO_PORT_SCROLLARAMA 0xD4 /* Scrollarama */
#define ECO_PORT_PHONE 0xD5 /* Phone */
#define ECO_PORT_BCASTCTL 0xD6 /* BroadcastControl */
#define ECO_PORT_BCASTDATA 0xD7 /* BroadcastData */
#define ECO_PORT_IMPLICENCE 0xD8 /* ImpressionLicenceChecker */
#define ECO_PORT_SQUIRREL 0xD9 /* DigitalServicesSquirrel */
#define ECO_PORT_SID2NDARY 0xDA /* SIDSecondary */
#define ECO_PORT_SQUIRREL2 0xDB /* DigitalServicesSquirrel2 */
#define ECO_PORT_DDCTL 0xDC /* DataDistributionControl */
#define ECO_PORT_DDDATA 0xDD /* DataDistributionData */
#define ECO_PORT_CLASSROM 0xDE /* ClassROM */
#define ECO_PORT_PSCMD 0xDF /* PrinterSpoolerCommand */
/* Control bytes for immediate operations. */
#define ECO_CTL_PEEK 0x81
#define ECO_CTL_POKE 0x82
#define ECO_CTL_JSR 0x83
#define ECO_CTL_USERPROC 0x84
#define ECO_CTL_OSPROC 0x85
#define ECO_CTL_HALT 0x86
#define ECO_CTL_CONTINUE 0x87
#define ECO_CTL_MACHINEPEEK 0x88
#define ECO_CTL_GETREGISTERS 0x89
/* Control bytes for IP */
#define ECO_CTL_IP 0x81
#define ECO_CTL_IPBCAST_REPLY 0x8E
#define ECO_CTL_IPBCAST_REQUEST 0x8F
#define ECO_CTL_ARP_REQUEST 0xA1
#define ECO_CTL_ARP_REPLY 0xA2
struct eco_arp {
u_int8_t ecar_spa[4];
u_int8_t ecar_tpa[4];
};
enum eco_state {
ECO_UNKNOWN, ECO_IDLE, ECO_SCOUT_RCVD,
ECO_SCOUT_SENT, ECO_DATA_SENT, ECO_IMMED_SENT,
ECO_DONE
};
/*
* This structure contains a packet that might need retransmitting,
* together with a callout to trigger retransmission. They're kept on
* a per-interface list so they can be freed when an interface is
* downed.
*/
struct eco_retry {
LIST_ENTRY(eco_retry) er_link;
struct callout er_callout;
struct mbuf *er_packet;
struct ifnet *er_ifp;
};
/*
* Common structure used to store state about an Econet interface.
*/
struct ecocom {
struct ifnet ec_if;
int (*ec_claimwire)(struct ifnet *);
void (*ec_txframe)(struct ifnet *, struct mbuf *);
enum eco_state ec_state;
struct mbuf *ec_scout;
struct mbuf *ec_packet;
LIST_HEAD(, eco_retry) ec_retries;
};
#ifdef _KERNEL
void eco_ifattach(struct ifnet *, const u_int8_t *);
void eco_ifdetach(struct ifnet *);
int eco_init(struct ifnet *);
void eco_stop(struct ifnet *, int);
char *eco_sprintf(const u_int8_t *);
struct mbuf * eco_inputframe(struct ifnet *, struct mbuf *);
void eco_inputidle(struct ifnet *);
#endif
#endif /* !_NET_IF_ECO_H_ */