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Annotation of kernel/bsd/netat/h/at_pat.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
                      7:  * Reserved.  This file contains Original Code and/or Modifications of
                      8:  * Original Code as defined in and that are subject to the Apple Public
                      9:  * Source License Version 1.1 (the "License").  You may not use this file
                     10:  * except in compliance with the License.  Please obtain a copy of the
                     11:  * License at http://www.apple.com/publicsource and read it before using
                     12:  * this file.
                     13:  * 
                     14:  * The Original Code and all software distributed under the License are
                     15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     19:  * License for the specific language governing rights and limitations
                     20:  * under the License.
                     21:  * 
                     22:  * @APPLE_LICENSE_HEADER_END@
                     23:  */
                     24: 
                     25: 
                     26: /*
                     27:  *     Copyright (c) 1988, 1989 Apple Computer, Inc. 
                     28:  *
                     29:  *     The information contained herein is subject to change without
                     30:  *     notice and  should not be  construed as a commitment by Apple
                     31:  *     Computer, Inc. Apple Computer, Inc. assumes no responsibility
                     32:  *     for any errors that may appear.
                     33:  *
                     34:  *     Confidential and Proprietary to Apple Computer, Inc.
                     35:  */
                     36: 
                     37: /* "@(#)at_pat.h: 2.0, 1.8; 10/4/93; Copyright 1988-89, Apple Computer, Inc." */
                     38: 
                     39: /* This is header for the PAT module. This contains a table of pointers that 
                     40:  * should get initialized with the BNET stuff and the ethernet driver. The 
                     41:  * number of interfaces supported should be communicated. Should include
                     42:  * mbuf.h, if.h, socket.h
                     43:  *
                     44:  * Author: R. C. Venkatraman
                     45:  * Date  : 2/29/88 
                     46:  */
                     47: 
                     48: typedef struct {
                     49:        unsigned char dst[6];
                     50:        unsigned char src[6];
                     51:        unsigned short len;
                     52: } enet_header_t;
                     53: 
                     54: typedef struct {
                     55:        unsigned char dst_sap;
                     56:        unsigned char src_sap;
                     57:        unsigned char control;
                     58:        unsigned char protocol[5];
                     59: } llc_header_t;
                     60: 
                     61: #define ENET_LLC_SIZE (sizeof(enet_header_t)+sizeof(llc_header_t))
                     62: #define SNAP_UI                0x03  /* bits 11000000 reversed!! */
                     63: #define SNAP_AT_SAP    0xaa
                     64: #define SNAP_PROTO_AT  {0x08, 0x00, 0x07, 0x80, 0x9B}
                     65: #define SNAP_PROTO_AARP        {0x00, 0x00, 0x00, 0x80, 0xF3}
                     66: #define SNAP_HDR_AT    {SNAP_AT_SAP, SNAP_AT_SAP, SNAP_UI, SNAP_PROTO_AT}
                     67: #define SNAP_HDR_AARP  {SNAP_AT_SAP, SNAP_AT_SAP, SNAP_UI, SNAP_PROTO_AARP}
                     68: 
                     69: #define LLC_PROTO_EQUAL(a1, a2)                                         \
                     70:         ((*((unsigned long *)(a1)) == *((unsigned long *)(a2))) &&      \
                     71:         (a1[4] == a2[4])                                               \
                     72:        )
                     73: 
                     74: /* PAT data structures and control codes */
                     75: 
                     76: #define        MAX_MCASTS                      25      /*#multicast addrs tracked per i/f */ 
                     77: 
                     78: typedef        struct pat_unit {
                     79:        int     state;          /* PAT state                            */
                     80:        caddr_t context;        /* Context pointer for upstream         */
                     81:        int     (*aarp_func)(); /* Function to be called for passing    */
                     82:                                                /* AARP packets up.                     */
                     83:        int     (*addr_check)();/* Function to be called for checking   */
                     84:                                                /* destination address for an incoming  */
                     85:                                                /* packet.                              */
                     86:        void    *nddp;  /* Pointer to NDD struct for this driver*/
                     87:        int     elapno;                 /* corresponding entry in elap_specifics */
                     88:                                                /* array for tracking registered mcast
                     89:                                                   addrs, only uniqe portion tracked */
                     90:        unsigned char   mcast[MAX_MCASTS];
                     91:        void *xddpq;
                     92:        void *xarpq;
                     93:        char  xflag;
                     94:        char  xunit;
                     95:        char  xtype;
                     96:        char  xpad;
                     97:        int   xaddrlen;
                     98:        char  xaddr[6];
                     99:        char  xname[8];
                    100: } pat_unit_t;
                    101: 
                    102: #define PAT_REG_CONTEXT                1
                    103: #define PAT_REG_ELAPQ          2
                    104: #define PAT_REG_AARP_UPSTREAM  3
                    105: #define PAT_REG_CHECKADDR      4
                    106: #define PAT_REG_MCAST          5
                    107: #define PAT_UNREG_MCAST                6
                    108: #define PAT_UNREG_ALL_MCAST    7
                    109: 
                    110:        /* multicast tracking */
                    111: #define MCAST_TRACK_ADD                1
                    112: #define MCAST_TRACK_DELETE     2
                    113: #define MCAST_TRACK_CHECK      3
                    114: 
                    115: /* PAT states */
                    116: #define PAT_FREE               0
                    117: #define PAT_OFFLINE            1
                    118: #define PAT_ONLINE             2

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