LXR linux/include/net/irda/qos.h

   1/*********************************************************************
   2 *                
   3 * Filename:      qos.h
   4 * Version:       1.0
   5 * Description:   Quality of Service definitions
   6 * Status:        Experimental.
   7 * Author:        Dag Brattli <dagb@cs.uit.no>
   8 * Created at:    Fri Sep 19 23:21:09 1997
   9 * Modified at:   Thu Dec  2 13:51:54 1999
  10 * Modified by:   Dag Brattli <dagb@cs.uit.no>
  11 * 
  12 *     Copyright (c) 1999 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 ********************************************************************/
  30
  31#ifndef IRDA_QOS_H
  32#define IRDA_QOS_H
  33
  34#include <linux/skbuff.h>
  35
  36#include <net/irda/parameters.h>
  37
  38#define PI_BAUD_RATE     0x01
  39#define PI_MAX_TURN_TIME 0x82
  40#define PI_DATA_SIZE     0x83
  41#define PI_WINDOW_SIZE   0x84
  42#define PI_ADD_BOFS      0x85
  43#define PI_MIN_TURN_TIME 0x86
  44#define PI_LINK_DISC     0x08
  45
  46#define IR_115200_MAX 0x3f
  47
  48/* Baud rates (first byte) */
  49#define IR_2400     0x01
  50#define IR_9600     0x02
  51#define IR_19200    0x04
  52#define IR_38400    0x08
  53#define IR_57600    0x10
  54#define IR_115200   0x20
  55#define IR_576000   0x40
  56#define IR_1152000  0x80
  57
  58/* Baud rates (second byte) */
  59#define IR_4000000  0x01
  60#define IR_16000000 0x02
  61
  62/* Quality of Service information */
  63typedef struct {
  64        __u32 value;
  65        __u16 bits; /* LSB is first byte, MSB is second byte */
  66} qos_value_t;
  67
  68struct qos_info {
  69        magic_t magic;
  70
  71        qos_value_t baud_rate;       /* IR_11520O | ... */
  72        qos_value_t max_turn_time;
  73        qos_value_t data_size;
  74        qos_value_t window_size;
  75        qos_value_t additional_bofs;
  76        qos_value_t min_turn_time;
  77        qos_value_t link_disc_time;
  78        
  79        qos_value_t power;
  80};
  81
  82extern int sysctl_max_baud_rate;
  83extern int sysctl_max_inactive_time;
  84
  85void irda_init_max_qos_capabilies(struct qos_info *qos);
  86void irda_qos_compute_intersection(struct qos_info *, struct qos_info *);
  87
  88__u32 irlap_max_line_capacity(__u32 speed, __u32 max_turn_time);
  89
  90void irda_qos_bits_to_value(struct qos_info *qos);
  91
  92/* So simple, how could we not inline those two ?
  93 * Note : one byte is 10 bits if you include start and stop bits
  94 * Jean II */
  95#define irlap_min_turn_time_in_bytes(speed, min_turn_time) (    \
  96        speed * min_turn_time / 10000000                        \
  97)
  98#define irlap_xbofs_in_usec(speed, xbofs) (                     \
  99        xbofs * 10000000 / speed                                \
 100)
 101
 102#endif
 103
 104