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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 2009 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 /* Copyright (c) 1990 Mentat Inc. */
     26 
     27 #ifndef	_INET_MI_H
     28 #define	_INET_MI_H
     29 
     30 #ifdef	__cplusplus
     31 extern "C" {
     32 #endif
     33 
     34 #ifdef _KERNEL
     35 
     36 #include <sys/types.h>
     37 #include <sys/vmem.h>
     38 #include <sys/varargs.h>
     39 #include <netinet/in.h>
     40 
     41 #define	MI_MIN_DEV		INET_MIN_DEV /* minimum minor device number */
     42 #define	MI_COPY_IN		1
     43 #define	MI_COPY_OUT		2
     44 #define	MI_COPY_DIRECTION(mp)	(*(int *)&(mp)->b_cont->b_next)
     45 #define	MI_COPY_COUNT(mp)	(*(int *)&(mp)->b_cont->b_prev)
     46 #define	MI_COPY_CASE(dir, cnt)	(((cnt)<<2)|dir)
     47 #define	MI_COPY_STATE(mp)	MI_COPY_CASE(MI_COPY_DIRECTION(mp), \
     48 					MI_COPY_COUNT(mp))
     49 
     50 /*
     51  * Double linked list of type MI_O with a mi_head_t as the head.
     52  * Used for mi_open_comm etc.
     53  */
     54 typedef struct mi_o_s {
     55 	struct mi_o_s	*mi_o_next;
     56 	struct mi_o_s	*mi_o_prev;
     57 	boolean_t	mi_o_isdev;	/* Is this a device instance */
     58 	dev_t		mi_o_dev;
     59 } MI_O, *MI_OP;
     60 
     61 /*
     62  * List head for MI_O doubly linked list.
     63  * The list contains unsorted driver, module and detached instances.
     64  *
     65  * Minor numbers are allocated from mh_arena which initially contains
     66  * [MI_MIN_DEV, mh_maxminor] numbers. When this arena is fully allocated, it is
     67  * extended to MAXMIN32.
     68  *
     69  * The module_dev is used to give almost unique numbers to module instances.
     70  * This is only needed for mi_strlog which uses the mi_o_dev field when
     71  * logging messages.
     72  */
     73 
     74 typedef struct mi_head_s {
     75 	struct mi_o_s	mh_o;	/* Contains head of doubly linked list */
     76 	vmem_t *mh_arena;	/* Minor number arena */
     77 	int	mh_module_dev;  /* Wraparound number for use when MODOPEN */
     78 	minor_t mh_maxminor;	/* max minor number in the arena */
     79 } mi_head_t;
     80 
     81 extern void	*mi_alloc(size_t size, uint_t pri);
     82 extern void	*mi_alloc_sleep(size_t size, uint_t pri);
     83 extern void	mi_free(void *ptr);
     84 
     85 extern int	mi_close_comm(void **mi_head, queue_t *q);
     86 extern void	mi_close_free(IDP ptr);
     87 extern void	mi_close_unlink(void **mi_head, IDP ptr);
     88 
     89 extern void	mi_copyin(queue_t *q, MBLKP mp, char *uaddr, size_t len);
     90 extern void	mi_copyin_n(queue_t *q, MBLKP mp, size_t offset, size_t len);
     91 extern void	mi_copyout(queue_t *q, MBLKP mp);
     92 extern MBLKP	mi_copyout_alloc(queue_t *q, MBLKP mp, char *uaddr, size_t len,
     93 		    boolean_t free_on_error);
     94 extern void	mi_copy_done(queue_t *q, MBLKP mp, int err);
     95 extern int	mi_copy_state(queue_t *q, MBLKP mp, MBLKP *mpp);
     96 
     97 /*PRINTFLIKE2*/
     98 extern int	mi_mpprintf(MBLKP mp, char *fmt, ...)
     99 	__KPRINTFLIKE(2);
    100 /*PRINTFLIKE2*/
    101 extern int	mi_mpprintf_nr(MBLKP mp, char *fmt, ...)
    102 	__KPRINTFLIKE(2);
    103 extern int	mi_mpprintf_putc(char *cookie, int ch);
    104 
    105 extern IDP	mi_first_ptr(void **mi_head);
    106 extern IDP	mi_first_dev_ptr(void **mi_head);
    107 extern IDP	mi_next_ptr(void **mi_head, IDP ptr);
    108 extern IDP	mi_next_dev_ptr(void **mi_head, IDP ptr);
    109 
    110 extern IDP	mi_open_alloc(size_t size);
    111 extern IDP	mi_open_alloc_sleep(size_t size);
    112 extern int	mi_open_comm(void **mi_head, size_t size, queue_t *q,
    113 		    dev_t *devp, int flag, int sflag, cred_t *credp);
    114 extern int	mi_open_link(void **mi_head, IDP ptr, dev_t *devp, int flag,
    115 		    int sflag, cred_t *credp);
    116 
    117 extern uint8_t *mi_offset_param(mblk_t *mp, size_t offset, size_t len);
    118 extern uint8_t *mi_offset_paramc(mblk_t *mp, size_t offset, size_t len);
    119 
    120 /*PRINTFLIKE2*/
    121 extern int	mi_sprintf(char *buf, char *fmt, ...)
    122 	__KPRINTFLIKE(2);
    123 extern int	mi_sprintf_putc(char *cookie, int ch);
    124 
    125 extern int	mi_strcmp(const char *cp1, const char *cp2);
    126 extern size_t	mi_strlen(const char *str);
    127 
    128 /*PRINTFLIKE4*/
    129 extern int	mi_strlog(queue_t *q, char level, ushort_t flags,
    130 		    char *fmt, ...) __KPRINTFLIKE(4);
    131 #pragma rarely_called(mi_strlog)
    132 
    133 extern long	mi_strtol(const char *str, char **ptr, int base);
    134 
    135 extern void	mi_timer(queue_t *q, MBLKP mp, clock_t tim);
    136 extern MBLKP	mi_timer_alloc(size_t size);
    137 extern void	mi_timer_free(MBLKP mp);
    138 extern void	mi_timer_move(queue_t *, mblk_t *);
    139 extern void	mi_timer_stop(mblk_t *);
    140 extern boolean_t	mi_timer_valid(MBLKP mp);
    141 
    142 extern MBLKP	mi_tpi_conn_con(MBLKP trailer_mp, char *src,
    143 		    t_scalar_t src_length, char *opt, t_scalar_t opt_length);
    144 extern MBLKP	mi_tpi_conn_ind(MBLKP trailer_mp, char *src,
    145 		    t_scalar_t src_length, char *opt, t_scalar_t opt_length,
    146 		    t_scalar_t seqnum);
    147 extern MBLKP	mi_tpi_extconn_ind(MBLKP trailer_mp, char *src,
    148 		    t_scalar_t src_length, char *opt, t_scalar_t opt_length,
    149 		    char *dst, t_scalar_t dst_length, t_scalar_t seqnum);
    150 extern MBLKP	mi_tpi_discon_ind(MBLKP trailer_mp, t_scalar_t reason,
    151 		    t_scalar_t seqnum);
    152 extern MBLKP	mi_tpi_err_ack_alloc(MBLKP mp, t_scalar_t tlierr, int unixerr);
    153 extern MBLKP	mi_tpi_ok_ack_alloc(MBLKP mp);
    154 extern MBLKP	mi_tpi_ok_ack_alloc_extra(MBLKP mp, int extra);
    155 extern MBLKP	mi_tpi_ordrel_ind(void);
    156 extern MBLKP	mi_tpi_uderror_ind(char *dest, t_scalar_t dest_length,
    157 		    char *opt, t_scalar_t opt_length, t_scalar_t error);
    158 
    159 extern IDP	mi_zalloc(size_t size);
    160 extern IDP	mi_zalloc_sleep(size_t size);
    161 
    162 #endif	/* _KERNEL */
    163 
    164 #ifdef	__cplusplus
    165 }
    166 #endif
    167 
    168 #endif	/* _INET_MI_H */
    169