Subversion Repositories openrisc

/*

 * Copyright (c) 1998, Larry Lile

 * All rights reserved.

 *

 * For latest sources and information on this driver, please

 * go to http://anarchy.stdio.com.

 *

 * Questions, comments or suggestions should be directed to

 * Larry Lile <lile@stdio.com>.

 *

 * 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 unmodified, 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.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.

 *

 * $FreeBSD: src/sys/net/iso88025.h,v 1.7 2002/05/08 01:08:26 kbyanc Exp $

 *

 * Information gathered from tokenring@freebsd, /sys/net/ethernet.h and

 * the Mach token ring driver.

 */

/*

 * Fundamental constants relating to iso 802.5

 */

#ifndef _NET_ISO88025_H_

#define _NET_ISO88025_H_

/*

 * General ISO 802.5 definitions

 */

#define ISO88025_ADDR_LEN       6

#define ISO88025_HDR_LEN        (ISO88025_CF_LEN + (ISO88025_ADDR_LEN * 2))

#define ISO88025_CF_LEN         2

#define RCF_LEN                 2

#define RIF_MAX_RD              14

#define RIF_MAX_LEN             16

#define TR_AC                   0x10

#define TR_LLC_FRAME            0x40

#define TR_4MBPS                4000000

#define TR_16MBPS               16000000

#define TR_100MBPS              100000000

/*

 * Source routing

 */

#define TR_RII                  0x80

#define TR_RCF_BCST_MASK        0xe000

#define TR_RCF_LEN_MASK         0x1f00

#define TR_RCF_DIR              0x0080

#define TR_RCF_LF_MASK          0x0070

#define TR_RCF_RIFLEN(x)        ((ntohs(x) & TR_RCF_LEN_MASK) >> 8)

/*

 * Minimum and maximum packet payload lengths.

 */

#define ISO88025_MIN_LEN        0 

#define ISO88025_MAX_LEN_4      4464

#define ISO88025_MAX_LEN_16     17960   

#define ISO88025_MAX_LEN        ISO88025_MAX_LEN_16

/*

 * A macro to validate a length with

 */

#define ISO88025_IS_VALID_LEN(foo)      \

        ((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)

/*

 * ISO 802.5 physical header

 */

struct iso88025_header {

        u_int8_t        ac;                                 /* access control field */

        u_int8_t        fc;                                 /* frame control field */

        u_int8_t        iso88025_dhost[ISO88025_ADDR_LEN];  /* destination address */

        u_int8_t        iso88025_shost[ISO88025_ADDR_LEN];  /* source address */

        u_int16_t       rcf;                                /* route control field */

        u_int16_t       rd[RIF_MAX_RD];                     /* routing designators */

} __attribute__ ((__packed__));

struct iso88025_rif {

        u_int16_t       rcf;                                /* route control field */

        u_int16_t       rd[RIF_MAX_RD];                     /* routing designators */

} __attribute__ ((__packed__));

struct iso88025_sockaddr_data {

        u_char ether_dhost[ISO88025_ADDR_LEN];

        u_char ether_shost[ISO88025_ADDR_LEN];

        u_char ac;

        u_char fc;

};

struct iso88025_sockaddr_dl_data {

        u_short  trld_rcf;

        u_short *trld_route[RIF_MAX_LEN];

};

#define ISO88025_MIN(a, b)      (((a)<(b))?(a):(b))

#define SDL_ISO88025(s)         ((struct iso88025_sockaddr_dl_data *)   \

                                 ((s)->sdl_data + \

                                  ISO88025_MIN((s)->sdl_nlen + (s)->sdl_alen + \

                                               (s)->sdl_slen, 12)))

/*

 * Structure of a 48-bit iso 802.5 address.

 *  ( We could also add the 16 bit addresses as a union)

 */

struct  iso88025_addr {

        u_char octet[ISO88025_ADDR_LEN];

};

#define ISO88025_MAX_MTU        18000

#define ISO88025_DEFAULT_MTU    1500

#define senderr(e) { error = (e); goto bad;}

void    iso88025_ifattach       (struct ifnet *);

void    iso88025_ifdetach       (struct ifnet *, int);

int     iso88025_ioctl          (struct ifnet *, int , caddr_t );

int     iso88025_output         (struct ifnet *, struct mbuf *, struct sockaddr *,

                                 struct rtentry *);

void    iso88025_input          (struct ifnet *, struct iso88025_header *,

                                 struct mbuf *);

#endif