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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, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 /* Copyright (c) 1990 Mentat Inc. */
     27 
     28 #ifndef	_INET_MI_H
     29 #define	_INET_MI_H
     30 
     31 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     32 
     33 #ifdef	__cplusplus
     34 extern "C" {
     35 #endif
     36 
     37 #ifdef _KERNEL
     38 
     39 #include <sys/types.h>
     40 #include <sys/vmem.h>
     41 #include <sys/varargs.h>
     42 
     43 #define	MI_MIN_DEV		INET_MIN_DEV /* minimum minor device number */
     44 #define	MI_COPY_IN		1
     45 #define	MI_COPY_OUT		2
     46 #define	MI_COPY_DIRECTION(mp)	(*(int *)&(mp)->b_cont->b_next)
     47 #define	MI_COPY_COUNT(mp)	(*(int *)&(mp)->b_cont->b_prev)
     48 #define	MI_COPY_CASE(dir, cnt)	(((cnt)<<2)|dir)
     49 #define	MI_COPY_STATE(mp)	MI_COPY_CASE(MI_COPY_DIRECTION(mp), \
     50 					MI_COPY_COUNT(mp))
     51 
     52 #ifdef __lint
     53 /* Lint complains about %p with field width specifiers. */
     54 #define	MI_COL_PTRFMT_STR	"%p "
     55 #define	MI_COL_HDRPAD_STR	""
     56 #else
     57 #ifdef _ILP32
     58 #if defined(__GNUC__)
     59 #define	MI_COL_PTRFMT_STR	"%8p "
     60 #else
     61 #define	MI_COL_PTRFMT_STR	"%08p "
     62 #endif	/* __GNUC__ */
     63 #define	MI_COL_HDRPAD_STR	""
     64 #else
     65 #define	MI_COL_PTRFMT_STR	"%16p "
     66 #define	MI_COL_HDRPAD_STR	"        "
     67 #endif
     68 #endif
     69 
     70 /*
     71  * Double linked list of type MI_O with a mi_head_t as the head.
     72  * Used for mi_open_comm etc.
     73  */
     74 typedef struct mi_o_s {
     75 	struct mi_o_s	*mi_o_next;
     76 	struct mi_o_s	*mi_o_prev;
     77 	boolean_t	mi_o_isdev;	/* Is this a device instance */
     78 	dev_t		mi_o_dev;
     79 } MI_O, *MI_OP;
     80 
     81 /*
     82  * List head for MI_O doubly linked list.
     83  * The list contains unsorted driver, module and detached instances.
     84  *
     85  * Minor numbers are allocated from mh_arena which initially contains
     86  * [MI_MIN_DEV, mh_maxminor] numbers. When this arena is fully allocated, it is
     87  * extended to MAXMIN32.
     88  *
     89  * The module_dev is used to give almost unique numbers to module instances.
     90  * This is only needed for mi_strlog which uses the mi_o_dev field when
     91  * logging messages.
     92  */
     93 
     94 typedef struct mi_head_s {
     95 	struct mi_o_s	mh_o;	/* Contains head of doubly linked list */
     96 	vmem_t *mh_arena;	/* Minor number arena */
     97 	int	mh_module_dev;  /* Wraparound number for use when MODOPEN */
     98 	minor_t mh_maxminor;	/* max minor number in the arena */
     99 } mi_head_t;
    100 
    101 extern void	*mi_alloc(size_t size, uint_t pri);
    102 extern void	*mi_alloc_sleep(size_t size, uint_t pri);
    103 extern void	mi_free(void *ptr);
    104 
    105 extern int	mi_close_comm(void **mi_head, queue_t *q);
    106 extern void	mi_close_free(IDP ptr);
    107 extern void	mi_close_unlink(void **mi_head, IDP ptr);
    108 
    109 extern void	mi_copyin(queue_t *q, MBLKP mp, char *uaddr, size_t len);
    110 extern void	mi_copyin_n(queue_t *q, MBLKP mp, size_t offset, size_t len);
    111 extern void	mi_copyout(queue_t *q, MBLKP mp);
    112 extern MBLKP	mi_copyout_alloc(queue_t *q, MBLKP mp, char *uaddr, size_t len,
    113 		    boolean_t free_on_error);
    114 extern void	mi_copy_done(queue_t *q, MBLKP mp, int err);
    115 extern int	mi_copy_state(queue_t *q, MBLKP mp, MBLKP *mpp);
    116 
    117 /*PRINTFLIKE2*/
    118 extern int	mi_mpprintf(MBLKP mp, char *fmt, ...)
    119 	__KPRINTFLIKE(2);
    120 /*PRINTFLIKE2*/
    121 extern int	mi_mpprintf_nr(MBLKP mp, char *fmt, ...)
    122 	__KPRINTFLIKE(2);
    123 extern int	mi_mpprintf_putc(char *cookie, int ch);
    124 
    125 extern IDP	mi_first_ptr(void **mi_head);
    126 extern IDP	mi_first_dev_ptr(void **mi_head);
    127 extern IDP	mi_next_ptr(void **mi_head, IDP ptr);
    128 extern IDP	mi_next_dev_ptr(void **mi_head, IDP ptr);
    129 
    130 extern IDP	mi_open_alloc(size_t size);
    131 extern IDP	mi_open_alloc_sleep(size_t size);
    132 extern int	mi_open_comm(void **mi_head, size_t size, queue_t *q,
    133 		    dev_t *devp, int flag, int sflag, cred_t *credp);
    134 extern int	mi_open_link(void **mi_head, IDP ptr, dev_t *devp, int flag,
    135 		    int sflag, cred_t *credp);
    136 
    137 extern uint8_t *mi_offset_param(mblk_t *mp, size_t offset, size_t len);
    138 extern uint8_t *mi_offset_paramc(mblk_t *mp, size_t offset, size_t len);
    139 
    140 
    141 extern boolean_t	mi_set_sth_hiwat(queue_t *q, size_t size);
    142 extern boolean_t	mi_set_sth_lowat(queue_t *q, size_t size);
    143 extern boolean_t	mi_set_sth_maxblk(queue_t *q, ssize_t size);
    144 extern boolean_t	mi_set_sth_copyopt(queue_t *q, int copyopt);
    145 extern boolean_t	mi_set_sth_wroff(queue_t *q, size_t size);
    146 
    147 /*PRINTFLIKE2*/
    148 extern int	mi_sprintf(char *buf, char *fmt, ...)
    149 	__KPRINTFLIKE(2);
    150 extern int	mi_sprintf_putc(char *cookie, int ch);
    151 
    152 extern int	mi_strcmp(const char *cp1, const char *cp2);
    153 extern size_t	mi_strlen(const char *str);
    154 
    155 /*PRINTFLIKE4*/
    156 extern int	mi_strlog(queue_t *q, char level, ushort_t flags,
    157 		    char *fmt, ...) __KPRINTFLIKE(4);
    158 #pragma rarely_called(mi_strlog)
    159 
    160 extern long	mi_strtol(const char *str, char **ptr, int base);
    161 
    162 extern void	mi_timer(queue_t *q, MBLKP mp, clock_t tim);
    163 extern MBLKP	mi_timer_alloc(size_t size);
    164 extern void	mi_timer_free(MBLKP mp);
    165 extern void	mi_timer_move(queue_t *, mblk_t *);
    166 extern void	mi_timer_stop(mblk_t *);
    167 extern boolean_t	mi_timer_valid(MBLKP mp);
    168 
    169 extern MBLKP	mi_tpi_conn_con(MBLKP trailer_mp, char *src,
    170 		    t_scalar_t src_length, char *opt, t_scalar_t opt_length);
    171 extern MBLKP	mi_tpi_conn_ind(MBLKP trailer_mp, char *src,
    172 		    t_scalar_t src_length, char *opt, t_scalar_t opt_length,
    173 		    t_scalar_t seqnum);
    174 extern MBLKP	mi_tpi_extconn_ind(MBLKP trailer_mp, char *src,
    175 		    t_scalar_t src_length, char *opt, t_scalar_t opt_length,
    176 		    char *dst, t_scalar_t dst_length, t_scalar_t seqnum);
    177 extern MBLKP	mi_tpi_discon_ind(MBLKP trailer_mp, t_scalar_t reason,
    178 		    t_scalar_t seqnum);
    179 extern MBLKP	mi_tpi_err_ack_alloc(MBLKP mp, t_scalar_t tlierr, int unixerr);
    180 extern MBLKP	mi_tpi_ok_ack_alloc(MBLKP mp);
    181 extern MBLKP	mi_tpi_ok_ack_alloc_extra(MBLKP mp, int extra);
    182 extern MBLKP	mi_tpi_ordrel_ind(void);
    183 extern MBLKP	mi_tpi_uderror_ind(char *dest, t_scalar_t dest_length,
    184 		    char *opt, t_scalar_t opt_length, t_scalar_t error);
    185 
    186 extern IDP	mi_zalloc(size_t size);
    187 extern IDP	mi_zalloc_sleep(size_t size);
    188 
    189 #endif	/* _KERNEL */
    190 
    191 #ifdef	__cplusplus
    192 }
    193 #endif
    194 
    195 #endif	/* _INET_MI_H */
    196