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