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TOMOYO Linux Cross Reference
Linux/net/rds/sysctl.c

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  1 /*
  2  * Copyright (c) 2006 Oracle.  All rights reserved.
  3  *
  4  * This software is available to you under a choice of one of two
  5  * licenses.  You may choose to be licensed under the terms of the GNU
  6  * General Public License (GPL) Version 2, available from the file
  7  * COPYING in the main directory of this source tree, or the
  8  * OpenIB.org BSD license below:
  9  *
 10  *     Redistribution and use in source and binary forms, with or
 11  *     without modification, are permitted provided that the following
 12  *     conditions are met:
 13  *
 14  *      - Redistributions of source code must retain the above
 15  *        copyright notice, this list of conditions and the following
 16  *        disclaimer.
 17  *
 18  *      - Redistributions in binary form must reproduce the above
 19  *        copyright notice, this list of conditions and the following
 20  *        disclaimer in the documentation and/or other materials
 21  *        provided with the distribution.
 22  *
 23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 30  * SOFTWARE.
 31  *
 32  */
 33 #include <linux/kernel.h>
 34 #include <linux/sysctl.h>
 35 #include <linux/proc_fs.h>
 36 
 37 #include "rds.h"
 38 
 39 static struct ctl_table_header *rds_sysctl_reg_table;
 40 
 41 static unsigned long rds_sysctl_reconnect_min = 1;
 42 static unsigned long rds_sysctl_reconnect_max = ~0UL;
 43 
 44 unsigned long rds_sysctl_reconnect_min_jiffies;
 45 unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
 46 
 47 unsigned int  rds_sysctl_max_unacked_packets = 8;
 48 unsigned int  rds_sysctl_max_unacked_bytes = (16 << 20);
 49 
 50 unsigned int rds_sysctl_ping_enable = 1;
 51 
 52 static ctl_table rds_sysctl_rds_table[] = {
 53         {
 54                 .procname       = "reconnect_min_delay_ms",
 55                 .data           = &rds_sysctl_reconnect_min_jiffies,
 56                 .maxlen         = sizeof(unsigned long),
 57                 .mode           = 0644,
 58                 .proc_handler   = proc_doulongvec_ms_jiffies_minmax,
 59                 .extra1         = &rds_sysctl_reconnect_min,
 60                 .extra2         = &rds_sysctl_reconnect_max_jiffies,
 61         },
 62         {
 63                 .procname       = "reconnect_max_delay_ms",
 64                 .data           = &rds_sysctl_reconnect_max_jiffies,
 65                 .maxlen         = sizeof(unsigned long),
 66                 .mode           = 0644,
 67                 .proc_handler   = proc_doulongvec_ms_jiffies_minmax,
 68                 .extra1         = &rds_sysctl_reconnect_min_jiffies,
 69                 .extra2         = &rds_sysctl_reconnect_max,
 70         },
 71         {
 72                 .procname       = "max_unacked_packets",
 73                 .data           = &rds_sysctl_max_unacked_packets,
 74                 .maxlen         = sizeof(int),
 75                 .mode           = 0644,
 76                 .proc_handler   = proc_dointvec,
 77         },
 78         {
 79                 .procname       = "max_unacked_bytes",
 80                 .data           = &rds_sysctl_max_unacked_bytes,
 81                 .maxlen         = sizeof(int),
 82                 .mode           = 0644,
 83                 .proc_handler   = proc_dointvec,
 84         },
 85         {
 86                 .procname       = "ping_enable",
 87                 .data           = &rds_sysctl_ping_enable,
 88                 .maxlen         = sizeof(int),
 89                 .mode           = 0644,
 90                 .proc_handler   = proc_dointvec,
 91         },
 92         { }
 93 };
 94 
 95 static struct ctl_path rds_sysctl_path[] = {
 96         { .procname = "net", },
 97         { .procname = "rds", },
 98         { }
 99 };
100 
101 
102 void rds_sysctl_exit(void)
103 {
104         if (rds_sysctl_reg_table)
105                 unregister_sysctl_table(rds_sysctl_reg_table);
106 }
107 
108 int rds_sysctl_init(void)
109 {
110         rds_sysctl_reconnect_min = msecs_to_jiffies(1);
111         rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
112 
113         rds_sysctl_reg_table = register_sysctl_paths(rds_sysctl_path, rds_sysctl_rds_table);
114         if (!rds_sysctl_reg_table)
115                 return -ENOMEM;
116         return 0;
117 }
118 

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