Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / net / irda / irsysctl.c
diff --git a/kernel/net/irda/irsysctl.c b/kernel/net/irda/irsysctl.c
new file mode 100644 (file)
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+/*********************************************************************
+ *
+ * Filename:      irsysctl.c
+ * Version:       1.0
+ * Description:   Sysctl interface for IrDA
+ * Status:        Experimental.
+ * Author:        Dag Brattli <dagb@cs.uit.no>
+ * Created at:    Sun May 24 22:12:06 1998
+ * Modified at:   Fri Jun  4 02:50:15 1999
+ * Modified by:   Dag Brattli <dagb@cs.uit.no>
+ *
+ *     Copyright (c) 1997, 1999 Dag Brattli, All Rights Reserved.
+ *     Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
+ *
+ *     This program is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of
+ *     the License, or (at your option) any later version.
+ *
+ *     Neither Dag Brattli nor University of Tromsø admit liability nor
+ *     provide warranty for any of this software. This material is
+ *     provided "AS-IS" and at no charge.
+ *
+ ********************************************************************/
+
+#include <linux/mm.h>
+#include <linux/ctype.h>
+#include <linux/sysctl.h>
+#include <linux/init.h>
+
+#include <net/irda/irda.h>             /* irda_debug */
+#include <net/irda/irlmp.h>
+#include <net/irda/timer.h>
+#include <net/irda/irias_object.h>
+
+extern int  sysctl_discovery;
+extern int  sysctl_discovery_slots;
+extern int  sysctl_discovery_timeout;
+extern int  sysctl_slot_timeout;
+extern int  sysctl_fast_poll_increase;
+extern char sysctl_devname[];
+extern int  sysctl_max_baud_rate;
+extern unsigned int sysctl_min_tx_turn_time;
+extern unsigned int sysctl_max_tx_data_size;
+extern unsigned int sysctl_max_tx_window;
+extern int  sysctl_max_noreply_time;
+extern int  sysctl_warn_noreply_time;
+extern int  sysctl_lap_keepalive_time;
+
+extern struct irlmp_cb *irlmp;
+
+/* this is needed for the proc_dointvec_minmax - Jean II */
+static int max_discovery_slots = 16;           /* ??? */
+static int min_discovery_slots = 1;
+/* IrLAP 6.13.2 says 25ms to 10+70ms - allow higher since some devices
+ * seems to require it. (from Dag's comment) */
+static int max_slot_timeout = 160;
+static int min_slot_timeout = 20;
+static int max_max_baud_rate = 16000000;       /* See qos.c - IrLAP spec */
+static int min_max_baud_rate = 2400;
+static int max_min_tx_turn_time = 10000;       /* See qos.c - IrLAP spec */
+static int min_min_tx_turn_time;
+static int max_max_tx_data_size = 2048;                /* See qos.c - IrLAP spec */
+static int min_max_tx_data_size = 64;
+static int max_max_tx_window = 7;              /* See qos.c - IrLAP spec */
+static int min_max_tx_window = 1;
+static int max_max_noreply_time = 40;          /* See qos.c - IrLAP spec */
+static int min_max_noreply_time = 3;
+static int max_warn_noreply_time = 3;          /* 3s == standard */
+static int min_warn_noreply_time = 1;          /* 1s == min WD_TIMER */
+static int max_lap_keepalive_time = 10000;     /* 10s */
+static int min_lap_keepalive_time = 100;       /* 100us */
+/* For other sysctl, I've no idea of the range. Maybe Dag could help
+ * us on that - Jean II */
+
+static int do_devname(struct ctl_table *table, int write,
+                     void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+       int ret;
+
+       ret = proc_dostring(table, write, buffer, lenp, ppos);
+       if (ret == 0 && write) {
+               struct ias_value *val;
+
+               val = irias_new_string_value(sysctl_devname);
+               if (val)
+                       irias_object_change_attribute("Device", "DeviceName", val);
+       }
+       return ret;
+}
+
+
+static int do_discovery(struct ctl_table *table, int write,
+                    void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+       int ret;
+
+       ret = proc_dointvec(table, write, buffer, lenp, ppos);
+       if (ret)
+              return ret;
+
+       if (irlmp == NULL)
+              return -ENODEV;
+
+       if (sysctl_discovery)
+              irlmp_start_discovery_timer(irlmp, sysctl_discovery_timeout*HZ);
+       else
+              del_timer_sync(&irlmp->discovery_timer);
+
+       return ret;
+}
+
+/* One file */
+static struct ctl_table irda_table[] = {
+       {
+               .procname       = "discovery",
+               .data           = &sysctl_discovery,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = do_discovery,
+       },
+       {
+               .procname       = "devname",
+               .data           = sysctl_devname,
+               .maxlen         = 65,
+               .mode           = 0644,
+               .proc_handler   = do_devname,
+       },
+#ifdef CONFIG_IRDA_FAST_RR
+       {
+               .procname       = "fast_poll_increase",
+               .data           = &sysctl_fast_poll_increase,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec
+       },
+#endif
+       {
+               .procname       = "discovery_slots",
+               .data           = &sysctl_discovery_slots,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_discovery_slots,
+               .extra2         = &max_discovery_slots
+       },
+       {
+               .procname       = "discovery_timeout",
+               .data           = &sysctl_discovery_timeout,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec
+       },
+       {
+               .procname       = "slot_timeout",
+               .data           = &sysctl_slot_timeout,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_slot_timeout,
+               .extra2         = &max_slot_timeout
+       },
+       {
+               .procname       = "max_baud_rate",
+               .data           = &sysctl_max_baud_rate,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_max_baud_rate,
+               .extra2         = &max_max_baud_rate
+       },
+       {
+               .procname       = "min_tx_turn_time",
+               .data           = &sysctl_min_tx_turn_time,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_min_tx_turn_time,
+               .extra2         = &max_min_tx_turn_time
+       },
+       {
+               .procname       = "max_tx_data_size",
+               .data           = &sysctl_max_tx_data_size,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_max_tx_data_size,
+               .extra2         = &max_max_tx_data_size
+       },
+       {
+               .procname       = "max_tx_window",
+               .data           = &sysctl_max_tx_window,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_max_tx_window,
+               .extra2         = &max_max_tx_window
+       },
+       {
+               .procname       = "max_noreply_time",
+               .data           = &sysctl_max_noreply_time,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_max_noreply_time,
+               .extra2         = &max_max_noreply_time
+       },
+       {
+               .procname       = "warn_noreply_time",
+               .data           = &sysctl_warn_noreply_time,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_warn_noreply_time,
+               .extra2         = &max_warn_noreply_time
+       },
+       {
+               .procname       = "lap_keepalive_time",
+               .data           = &sysctl_lap_keepalive_time,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_lap_keepalive_time,
+               .extra2         = &max_lap_keepalive_time
+       },
+       { }
+};
+
+static struct ctl_table_header *irda_table_header;
+
+/*
+ * Function irda_sysctl_register (void)
+ *
+ *    Register our sysctl interface
+ *
+ */
+int __init irda_sysctl_register(void)
+{
+       irda_table_header = register_net_sysctl(&init_net, "net/irda", irda_table);
+       if (!irda_table_header)
+               return -ENOMEM;
+
+       return 0;
+}
+
+/*
+ * Function irda_sysctl_unregister (void)
+ *
+ *    Unregister our sysctl interface
+ *
+ */
+void irda_sysctl_unregister(void)
+{
+       unregister_net_sysctl_table(irda_table_header);
+}
+
+
+