1/*********************************************************************
2 *
3 * Filename:      irsysctl.c
4 * Version:       1.0
5 * Description:   Sysctl interface for IrDA
6 * Status:        Experimental.
7 * Author:        Dag Brattli <dagb@cs.uit.no>
8 * Created at:    Sun May 24 22:12:06 1998
9 * Modified at:   Fri Jun  4 02:50:15 1999
10 * Modified by:   Dag Brattli <dagb@cs.uit.no>
11 *
12 *     Copyright (c) 1997, 1999 Dag Brattli, All Rights Reserved.
13 *     Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
14 *
15 *     This program is free software; you can redistribute it and/or
16 *     modify it under the terms of the GNU General Public License as
17 *     published by the Free Software Foundation; either version 2 of
18 *     the License, or (at your option) any later version.
19 *
20 *     Neither Dag Brattli nor University of Troms� admit liability nor
21 *     provide warranty for any of this software. This material is
22 *     provided "AS-IS" and at no charge.
23 *
24 ********************************************************************/
25
26#include <linux/config.h>
27#include <linux/mm.h>
28#include <linux/ctype.h>
29#include <linux/sysctl.h>
30#include <asm/segment.h>
31
32#include <net/irda/irda.h>
33#include <net/irda/irias_object.h>
34
35#define NET_IRDA 412 /* Random number */
36enum { DISCOVERY=1, DEVNAME, DEBUG, FAST_POLL, DISCOVERY_SLOTS,
37       DISCOVERY_TIMEOUT, SLOT_TIMEOUT, MAX_BAUD_RATE, MIN_TX_TURN_TIME,
38       MAX_TX_DATA_SIZE, MAX_NOREPLY_TIME, WARN_NOREPLY_TIME,
39       LAP_KEEPALIVE_TIME };
40
41extern int  sysctl_discovery;
42extern int  sysctl_discovery_slots;
43extern int  sysctl_discovery_timeout;
44extern int  sysctl_slot_timeout;
45extern int  sysctl_fast_poll_increase;
46int         sysctl_compression = 0;
47extern char sysctl_devname[];
48extern int  sysctl_max_baud_rate;
49extern int  sysctl_min_tx_turn_time;
50extern int  sysctl_max_tx_data_size;
51extern int  sysctl_max_noreply_time;
52extern int  sysctl_warn_noreply_time;
53extern int  sysctl_lap_keepalive_time;
54
55#ifdef CONFIG_IRDA_DEBUG
56extern unsigned int irda_debug;
57#endif
58
59/* this is needed for the proc_dointvec_minmax - Jean II */
60static int max_discovery_slots = 16;		/* ??? */
61static int min_discovery_slots = 1;
62/* IrLAP 6.13.2 says 25ms to 10+70ms - allow higher since some devices
63 * seems to require it. (from Dag's comment) */
64static int max_slot_timeout = 160;
65static int min_slot_timeout = 20;
66static int max_max_baud_rate = 16000000;	/* See qos.c - IrLAP spec */
67static int min_max_baud_rate = 2400;
68static int max_min_tx_turn_time = 10000;	/* See qos.c - IrLAP spec */
69static int min_min_tx_turn_time = 0;
70static int max_max_tx_data_size = 2048;		/* See qos.c - IrLAP spec */
71static int min_max_tx_data_size = 64;
72static int max_max_noreply_time = 40;		/* See qos.c - IrLAP spec */
73static int min_max_noreply_time = 3;
74static int max_warn_noreply_time = 3;		/* 3s == standard */
75static int min_warn_noreply_time = 1;		/* 1s == min WD_TIMER */
76static int max_lap_keepalive_time = 10000;	/* 10s */
77static int min_lap_keepalive_time = 100;	/* 100us */
78/* For other sysctl, I've no idea of the range. Maybe Dag could help
79 * us on that - Jean II */
80
81static int do_devname(ctl_table *table, int write, struct file *filp,
82		      void *buffer, size_t *lenp)
83{
84	int ret;
85
86	ret = proc_dostring(table, write, filp, buffer, lenp);
87	if (ret == 0 && write) {
88		struct ias_value *val;
89
90		val = irias_new_string_value(sysctl_devname);
91		if (val)
92			irias_object_change_attribute("Device", "DeviceName", val);
93	}
94	return ret;
95}
96
97/* One file */
98static ctl_table irda_table[] = {
99	{ DISCOVERY, "discovery", &sysctl_discovery,
100	  sizeof(int), 0644, NULL, &proc_dointvec },
101	{ DEVNAME, "devname", sysctl_devname,
102	  65, 0644, NULL, &do_devname, &sysctl_string},
103#ifdef CONFIG_IRDA_DEBUG
104        { DEBUG, "debug", &irda_debug,
105	  sizeof(int), 0644, NULL, &proc_dointvec },
106#endif
107#ifdef CONFIG_IRDA_FAST_RR
108        { FAST_POLL, "fast_poll_increase", &sysctl_fast_poll_increase,
109	  sizeof(int), 0644, NULL, &proc_dointvec },
110#endif
111	{ DISCOVERY_SLOTS, "discovery_slots", &sysctl_discovery_slots,
112	  sizeof(int), 0644, NULL, &proc_dointvec_minmax, &sysctl_intvec,
113	  NULL, &min_discovery_slots, &max_discovery_slots },
114	{ DISCOVERY_TIMEOUT, "discovery_timeout", &sysctl_discovery_timeout,
115	  sizeof(int), 0644, NULL, &proc_dointvec },
116	{ SLOT_TIMEOUT, "slot_timeout", &sysctl_slot_timeout,
117	  sizeof(int), 0644, NULL, &proc_dointvec_minmax, &sysctl_intvec,
118	  NULL, &min_slot_timeout, &max_slot_timeout },
119	{ MAX_BAUD_RATE, "max_baud_rate", &sysctl_max_baud_rate,
120	  sizeof(int), 0644, NULL, &proc_dointvec_minmax, &sysctl_intvec,
121	  NULL, &min_max_baud_rate, &max_max_baud_rate },
122	{ MIN_TX_TURN_TIME, "min_tx_turn_time", &sysctl_min_tx_turn_time,
123	  sizeof(int), 0644, NULL, &proc_dointvec_minmax, &sysctl_intvec,
124	  NULL, &min_min_tx_turn_time, &max_min_tx_turn_time },
125	{ MAX_TX_DATA_SIZE, "max_tx_data_size", &sysctl_max_tx_data_size,
126	  sizeof(int), 0644, NULL, &proc_dointvec_minmax, &sysctl_intvec,
127	  NULL, &min_max_tx_data_size, &max_max_tx_data_size },
128	{ MAX_NOREPLY_TIME, "max_noreply_time", &sysctl_max_noreply_time,
129	  sizeof(int), 0644, NULL, &proc_dointvec_minmax, &sysctl_intvec,
130	  NULL, &min_max_noreply_time, &max_max_noreply_time },
131	{ WARN_NOREPLY_TIME, "warn_noreply_time", &sysctl_warn_noreply_time,
132	  sizeof(int), 0644, NULL, &proc_dointvec_minmax, &sysctl_intvec,
133	  NULL, &min_warn_noreply_time, &max_warn_noreply_time },
134	{ LAP_KEEPALIVE_TIME, "lap_keepalive_time", &sysctl_lap_keepalive_time,
135	  sizeof(int), 0644, NULL, &proc_dointvec_minmax, &sysctl_intvec,
136	  NULL, &min_lap_keepalive_time, &max_lap_keepalive_time },
137	{ 0 }
138};
139
140/* One directory */
141static ctl_table irda_net_table[] = {
142	{ NET_IRDA, "irda", NULL, 0, 0555, irda_table },
143	{ 0 }
144};
145
146/* The parent directory */
147static ctl_table irda_root_table[] = {
148	{ CTL_NET, "net", NULL, 0, 0555, irda_net_table },
149	{ 0 }
150};
151
152static struct ctl_table_header *irda_table_header;
153
154/*
155 * Function irda_sysctl_register (void)
156 *
157 *    Register our sysctl interface
158 *
159 */
160int irda_sysctl_register(void)
161{
162	irda_table_header = register_sysctl_table(irda_root_table, 0);
163	if (!irda_table_header)
164		return -ENOMEM;
165
166	return 0;
167}
168
169/*
170 * Function irda_sysctl_unregister (void)
171 *
172 *    Unregister our sysctl interface
173 *
174 */
175void irda_sysctl_unregister(void)
176{
177	unregister_sysctl_table(irda_table_header);
178}
179
180
181
182