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, see <http://www.gnu.org/licenses/>.
  26 *     
  27 ********************************************************************/
  28
  29#ifndef IRDA_QOS_H
  30#define IRDA_QOS_H
  31
  32#include <linux/skbuff.h>
  33
  34#include <net/irda/parameters.h>
  35
  36#define PI_BAUD_RATE     0x01
  37#define PI_MAX_TURN_TIME 0x82
  38#define PI_DATA_SIZE     0x83
  39#define PI_WINDOW_SIZE   0x84
  40#define PI_ADD_BOFS      0x85
  41#define PI_MIN_TURN_TIME 0x86
  42#define PI_LINK_DISC     0x08
  43
  44#define IR_115200_MAX 0x3f
  45
  46/* Baud rates (first byte) */
  47#define IR_2400     0x01
  48#define IR_9600     0x02
  49#define IR_19200    0x04
  50#define IR_38400    0x08
  51#define IR_57600    0x10
  52#define IR_115200   0x20
  53#define IR_576000   0x40
  54#define IR_1152000  0x80
  55
  56/* Baud rates (second byte) */
  57#define IR_4000000  0x01
  58#define IR_16000000 0x02
  59
  60/* Quality of Service information */
  61typedef struct {
  62        __u32 value;
  63        __u16 bits; /* LSB is first byte, MSB is second byte */
  64} qos_value_t;
  65
  66struct qos_info {
  67        magic_t magic;
  68
  69        qos_value_t baud_rate;       /* IR_11520O | ... */
  70        qos_value_t max_turn_time;
  71        qos_value_t data_size;
  72        qos_value_t window_size;
  73        qos_value_t additional_bofs;
  74        qos_value_t min_turn_time;
  75        qos_value_t link_disc_time;
  76        
  77        qos_value_t power;
  78};
  79
  80extern int sysctl_max_baud_rate;
  81extern int sysctl_max_inactive_time;
  82
  83void irda_init_max_qos_capabilies(struct qos_info *qos);
  84void irda_qos_compute_intersection(struct qos_info *, struct qos_info *);
  85
  86__u32 irlap_max_line_capacity(__u32 speed, __u32 max_turn_time);
  87
  88void irda_qos_bits_to_value(struct qos_info *qos);
  89
  90/* So simple, how could we not inline those two ?
  91 * Note : one byte is 10 bits if you include start and stop bits
  92 * Jean II */
  93#define irlap_min_turn_time_in_bytes(speed, min_turn_time) (    \
  94        speed * min_turn_time / 10000000                        \
  95)
  96#define irlap_xbofs_in_usec(speed, xbofs) (                     \
  97        xbofs * 10000000 / speed                                \
  98)
  99
 100#endif
 101
 102