5dd3df105b
This makes it clearer which sysctls are relative to your current network namespace. This makes it a little less error prone by not exposing sysctls for the initial network namespace in other namespaces. This is the same way we handle all of our other network interfaces to userspace and I can't honestly remember why we didn't do this for sysctls right from the start. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
274 lines
7.1 KiB
C
274 lines
7.1 KiB
C
/*********************************************************************
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*
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* Filename: irsysctl.c
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* Version: 1.0
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* Description: Sysctl interface for IrDA
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* Status: Experimental.
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* Author: Dag Brattli <dagb@cs.uit.no>
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* Created at: Sun May 24 22:12:06 1998
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* Modified at: Fri Jun 4 02:50:15 1999
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* Modified by: Dag Brattli <dagb@cs.uit.no>
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*
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* Copyright (c) 1997, 1999 Dag Brattli, All Rights Reserved.
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* Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* Neither Dag Brattli nor University of Tromsø admit liability nor
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* provide warranty for any of this software. This material is
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* provided "AS-IS" and at no charge.
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*
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********************************************************************/
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#include <linux/mm.h>
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#include <linux/ctype.h>
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#include <linux/sysctl.h>
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#include <linux/init.h>
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#include <net/irda/irda.h> /* irda_debug */
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#include <net/irda/irlmp.h>
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#include <net/irda/timer.h>
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#include <net/irda/irias_object.h>
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extern int sysctl_discovery;
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extern int sysctl_discovery_slots;
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extern int sysctl_discovery_timeout;
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extern int sysctl_slot_timeout;
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extern int sysctl_fast_poll_increase;
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extern char sysctl_devname[];
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extern int sysctl_max_baud_rate;
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extern unsigned int sysctl_min_tx_turn_time;
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extern unsigned int sysctl_max_tx_data_size;
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extern unsigned int sysctl_max_tx_window;
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extern int sysctl_max_noreply_time;
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extern int sysctl_warn_noreply_time;
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extern int sysctl_lap_keepalive_time;
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extern struct irlmp_cb *irlmp;
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/* this is needed for the proc_dointvec_minmax - Jean II */
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static int max_discovery_slots = 16; /* ??? */
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static int min_discovery_slots = 1;
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/* IrLAP 6.13.2 says 25ms to 10+70ms - allow higher since some devices
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* seems to require it. (from Dag's comment) */
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static int max_slot_timeout = 160;
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static int min_slot_timeout = 20;
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static int max_max_baud_rate = 16000000; /* See qos.c - IrLAP spec */
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static int min_max_baud_rate = 2400;
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static int max_min_tx_turn_time = 10000; /* See qos.c - IrLAP spec */
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static int min_min_tx_turn_time;
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static int max_max_tx_data_size = 2048; /* See qos.c - IrLAP spec */
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static int min_max_tx_data_size = 64;
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static int max_max_tx_window = 7; /* See qos.c - IrLAP spec */
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static int min_max_tx_window = 1;
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static int max_max_noreply_time = 40; /* See qos.c - IrLAP spec */
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static int min_max_noreply_time = 3;
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static int max_warn_noreply_time = 3; /* 3s == standard */
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static int min_warn_noreply_time = 1; /* 1s == min WD_TIMER */
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static int max_lap_keepalive_time = 10000; /* 10s */
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static int min_lap_keepalive_time = 100; /* 100us */
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/* For other sysctl, I've no idea of the range. Maybe Dag could help
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* us on that - Jean II */
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static int do_devname(ctl_table *table, int write,
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void __user *buffer, size_t *lenp, loff_t *ppos)
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{
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int ret;
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ret = proc_dostring(table, write, buffer, lenp, ppos);
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if (ret == 0 && write) {
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struct ias_value *val;
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val = irias_new_string_value(sysctl_devname);
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if (val)
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irias_object_change_attribute("Device", "DeviceName", val);
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}
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return ret;
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}
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static int do_discovery(ctl_table *table, int write,
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void __user *buffer, size_t *lenp, loff_t *ppos)
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{
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int ret;
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ret = proc_dointvec(table, write, buffer, lenp, ppos);
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if (ret)
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return ret;
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if (irlmp == NULL)
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return -ENODEV;
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if (sysctl_discovery)
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irlmp_start_discovery_timer(irlmp, sysctl_discovery_timeout*HZ);
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else
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del_timer_sync(&irlmp->discovery_timer);
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return ret;
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}
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/* One file */
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static ctl_table irda_table[] = {
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{
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.procname = "discovery",
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.data = &sysctl_discovery,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = do_discovery,
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},
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{
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.procname = "devname",
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.data = sysctl_devname,
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.maxlen = 65,
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.mode = 0644,
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.proc_handler = do_devname,
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},
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#ifdef CONFIG_IRDA_DEBUG
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{
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.procname = "debug",
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.data = &irda_debug,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec
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},
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#endif
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#ifdef CONFIG_IRDA_FAST_RR
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{
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.procname = "fast_poll_increase",
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.data = &sysctl_fast_poll_increase,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec
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},
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#endif
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{
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.procname = "discovery_slots",
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.data = &sysctl_discovery_slots,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &min_discovery_slots,
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.extra2 = &max_discovery_slots
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},
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{
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.procname = "discovery_timeout",
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.data = &sysctl_discovery_timeout,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec
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},
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{
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.procname = "slot_timeout",
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.data = &sysctl_slot_timeout,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &min_slot_timeout,
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.extra2 = &max_slot_timeout
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},
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{
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.procname = "max_baud_rate",
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.data = &sysctl_max_baud_rate,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &min_max_baud_rate,
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.extra2 = &max_max_baud_rate
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},
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{
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.procname = "min_tx_turn_time",
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.data = &sysctl_min_tx_turn_time,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &min_min_tx_turn_time,
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.extra2 = &max_min_tx_turn_time
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},
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{
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.procname = "max_tx_data_size",
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.data = &sysctl_max_tx_data_size,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &min_max_tx_data_size,
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.extra2 = &max_max_tx_data_size
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},
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{
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.procname = "max_tx_window",
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.data = &sysctl_max_tx_window,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &min_max_tx_window,
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.extra2 = &max_max_tx_window
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},
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{
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.procname = "max_noreply_time",
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.data = &sysctl_max_noreply_time,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &min_max_noreply_time,
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.extra2 = &max_max_noreply_time
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},
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{
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.procname = "warn_noreply_time",
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.data = &sysctl_warn_noreply_time,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &min_warn_noreply_time,
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.extra2 = &max_warn_noreply_time
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},
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{
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.procname = "lap_keepalive_time",
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.data = &sysctl_lap_keepalive_time,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &min_lap_keepalive_time,
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.extra2 = &max_lap_keepalive_time
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},
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{ }
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};
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static struct ctl_path irda_path[] = {
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{ .procname = "net", },
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{ .procname = "irda", },
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{ }
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};
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static struct ctl_table_header *irda_table_header;
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/*
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* Function irda_sysctl_register (void)
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*
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* Register our sysctl interface
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*
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*/
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int __init irda_sysctl_register(void)
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{
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irda_table_header = register_net_sysctl_table(&init_net, irda_path, irda_table);
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if (!irda_table_header)
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return -ENOMEM;
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return 0;
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}
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/*
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* Function irda_sysctl_unregister (void)
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*
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* Unregister our sysctl interface
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*
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*/
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void irda_sysctl_unregister(void)
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{
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unregister_net_sysctl_table(irda_table_header);
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}
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