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      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 uts/common/inet/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 */
     94