include/inet/nd.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25 /* Copyright (c) 1990 Mentat Inc. */
  26
  27 #ifndef _INET_ND_H
  28 #define _INET_ND_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <sys/types.h>
  33 #include <inet/common.h>
  34 #include <inet/led.h>
  35
  36 #ifdef  __cplusplus
  37 extern "C" {
  38 #endif
  39
  40 #define ND_BASE         ('N' << 8)      /* base */
  41 #define ND_GET          (ND_BASE + 0)   /* Get a value */
  42 #define ND_SET          (ND_BASE + 1)   /* Set a value */
  43
  44 #ifdef  _KERNEL
  45 /* ND callback function prototypes */
  46 typedef int (*ndgetf_t)(queue_t *, MBLKP, caddr_t, cred_t *);
  47 typedef int (*ndsetf_t)(queue_t *, MBLKP, char *, caddr_t, cred_t *);
  48
  49 /* Named dispatch table entry */
  50 typedef struct  nde_s {
  51         char    *nde_name;
  52         pfi_t   nde_get_pfi;
  53         pfi_t   nde_set_pfi;
  54         caddr_t nde_data;
  55 } NDE;
  56
  57 /* Name dispatch table */
  58 typedef struct  nd_s {
  59         int     nd_free_count;  /* number of unused nd table entries */
  60         int     nd_size;        /* size (in bytes) of current table */
  61         NDE     *nd_tbl;        /* pointer to table in heap */
  62 } ND;
  63
  64 #define NDE_ALLOC_COUNT 32
  65 #define NDE_ALLOC_SIZE  (sizeof (NDE) * NDE_ALLOC_COUNT)
  66
  67 /* 64K STREAM limit - the max ndd info header. */
  68 #define ND_MAX_BUF_LEN  65303
  69
  70 /*
  71  * See kernel/net/nd.c for comments on how to use these routines.
  72  */
  73 extern boolean_t        nd_load(caddr_t *, char *, ndgetf_t, ndsetf_t, caddr_t);
  74 extern void             nd_unload(caddr_t *, char *);
  75 extern void             nd_free(caddr_t *);
  76 extern int              nd_getset(queue_t *, caddr_t, MBLKP);
  77
  78 /*
  79  * Canned nd_get and nd_set routines for use with nd_load().
  80  */
  81 extern int      nd_get_default(queue_t *, MBLKP, caddr_t, cred_t *);
  82 extern int      nd_get_long(queue_t *, MBLKP, caddr_t, cred_t *);
  83 extern int      nd_get_names(queue_t *, MBLKP, caddr_t, cred_t *);
  84 extern int      nd_set_default(queue_t *, MBLKP, char *, caddr_t, cred_t *);
  85 extern int      nd_set_long(queue_t *, MBLKP, char *, caddr_t, cred_t *);
  86
  87 #endif  /* _KERNEL */
  88
  89 #ifdef  __cplusplus
  90 }
  91 #endif
  92
  93 #endif  /* _INET_ND_H */