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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/config.h>
35#include <linux/skbuff.h>
36
37#include <net/irda/parameters.h>
38
39#define PI_BAUD_RATE 0x01
40#define PI_MAX_TURN_TIME 0x82
41#define PI_DATA_SIZE 0x83
42#define PI_WINDOW_SIZE 0x84
43#define PI_ADD_BOFS 0x85
44#define PI_MIN_TURN_TIME 0x86
45#define PI_LINK_DISC 0x08
46
47#define IR_115200_MAX 0x3f
48
49/* Baud rates (first byte) */
50#define IR_2400 0x01
51#define IR_9600 0x02
52#define IR_19200 0x04
53#define IR_38400 0x08
54#define IR_57600 0x10
55#define IR_115200 0x20
56#define IR_576000 0x40
57#define IR_1152000 0x80
58
59/* Baud rates (second byte) */
60#define IR_4000000 0x01
61#define IR_16000000 0x02
62
63/* Quality of Service information */
64typedef struct {
65 __u32 value;
66 __u16 bits; /* LSB is first byte, MSB is second byte */
67} qos_value_t;
68
69struct qos_info {
70 magic_t magic;
71
72 qos_value_t baud_rate; /* IR_11520O | ... */
73 qos_value_t max_turn_time;
74 qos_value_t data_size;
75 qos_value_t window_size;
76 qos_value_t additional_bofs;
77 qos_value_t min_turn_time;
78 qos_value_t link_disc_time;
79
80 qos_value_t power;
81};
82
83extern int sysctl_max_baud_rate;
84extern int sysctl_max_inactive_time;
85
86void irda_init_max_qos_capabilies(struct qos_info *qos);
87void irda_qos_compute_intersection(struct qos_info *, struct qos_info *);
88
89__u32 irlap_max_line_capacity(__u32 speed, __u32 max_turn_time);
90
91void irda_qos_bits_to_value(struct qos_info *qos);
92
93/* So simple, how could we not inline those two ?
94 * Note : one byte is 10 bits if you include start and stop bits
95 * Jean II */
96#define irlap_min_turn_time_in_bytes(speed, min_turn_time) ( \
97 speed * min_turn_time / 10000000 \
98)
99#define irlap_xbofs_in_usec(speed, xbofs) ( \
100 xbofs * 10000000 / speed \
101)
102
103#endif
104