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 */
63 typedef struct {
64 	__u32 value;
65 	__u16 bits; /* LSB is first byte, MSB is second byte */
66 } qos_value_t;
67 
68 struct 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 
82 extern int sysctl_max_baud_rate;
83 extern int sysctl_max_inactive_time;
84 
85 void irda_init_max_qos_capabilies(struct qos_info *qos);
86 void irda_qos_compute_intersection(struct qos_info *, struct qos_info *);
87 
88 __u32 irlap_max_line_capacity(__u32 speed, __u32 max_turn_time);
89 
90 void 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