include/net/irda/parameters.h

   1 /*********************************************************************
   2  *
   3  * Filename:      parameters.h
   4  * Version:       1.0
   5  * Description:   A more general way to handle (pi,pl,pv) parameters
   6  * Status:        Experimental.
   7  * Author:        Dag Brattli <dagb@cs.uit.no>
   8  * Created at:    Mon Jun  7 08:47:28 1999
   9  * Modified at:   Sun Jan 30 14:05:14 2000
  10  * Modified by:   Dag Brattli <dagb@cs.uit.no>
  11  *
  12  *     Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved.
  13  *
  14  *     This program is free software; you can redistribute it and/or
  15  *     modify it under the terms of the GNU General Public License as
  16  *     published by the Free Software Foundation; either version 2 of
  17  *     the License, or (at your option) any later version.
  18  *
  19  *     This program is distributed in the hope that it will be useful,
  20  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  22  *     GNU General Public License for more details.
  23  *
  24  *     You should have received a copy of the GNU General Public License
  25  *     along with this program; if not, write to the Free Software
  26  *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  27  *     MA 02111-1307 USA
  28  *
  29  *     Michel Dänzer <daenzer@debian.org>, 10/2001
  30  *     - simplify irda_pv_t to avoid endianness issues
  31  *
  32  ********************************************************************/
  33
  34 #ifndef IRDA_PARAMS_H
  35 #define IRDA_PARAMS_H
  36
  37 /*
  38  *  The currently supported types. Beware not to change the sequence since
  39  *  it a good reason why the sized integers has a value equal to their size
  40  */
  41 typedef enum {
  42         PV_INTEGER,      /* Integer of any (pl) length */
  43         PV_INT_8_BITS,   /* Integer of 8 bits in length */
  44         PV_INT_16_BITS,  /* Integer of 16 bits in length */
  45         PV_STRING,       /* \0 terminated string */
  46         PV_INT_32_BITS,  /* Integer of 32 bits in length */
  47         PV_OCT_SEQ,      /* Octet sequence */
  48         PV_NO_VALUE      /* Does not contain any value (pl=0) */
  49 } PV_TYPE;
  50
  51 /* Bit 7 of type field */
  52 #define PV_BIG_ENDIAN    0x80
  53 #define PV_LITTLE_ENDIAN 0x00
  54 #define PV_MASK          0x7f   /* To mask away endian bit */
  55
  56 #define PV_PUT 0
  57 #define PV_GET 1
  58
  59 typedef union {
  60         char   *c;
  61         __u32   i;
  62         __u32 *ip;
  63 } irda_pv_t;
  64
  65 typedef struct {
  66         __u8 pi;
  67         __u8 pl;
  68         irda_pv_t pv;
  69 } irda_param_t;
  70
  71 typedef int (*PI_HANDLER)(void *self, irda_param_t *param, int get);
  72 typedef int (*PV_HANDLER)(void *self, __u8 *buf, int len, __u8 pi,
  73                           PV_TYPE type, PI_HANDLER func);
  74
  75 typedef struct {
  76         PI_HANDLER func;  /* Handler for this parameter identifier */
  77         PV_TYPE    type;  /* Data type for this parameter */
  78 } pi_minor_info_t;
  79
  80 typedef struct {
  81         pi_minor_info_t *pi_minor_call_table;
  82         int len;
  83 } pi_major_info_t;
  84
  85 typedef struct {
  86         pi_major_info_t *tables;
  87         int              len;
  88         __u8             pi_mask;
  89         int              pi_major_offset;
  90 } pi_param_info_t;
  91
  92 int irda_param_pack(__u8 *buf, char *fmt, ...);
  93
  94 int irda_param_insert(void *self, __u8 pi, __u8 *buf, int len,
  95                       pi_param_info_t *info);
  96 int irda_param_extract_all(void *self, __u8 *buf, int len,
  97                            pi_param_info_t *info);
  98
  99 #define irda_param_insert_byte(buf,pi,pv) irda_param_pack(buf,"bbb",pi,1,pv)
 100
 101 #endif /* IRDA_PARAMS_H */
 102