cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sysctl.c (3515B)

      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
     39static struct ctl_table_header *rds_sysctl_reg_table;
     40
     41static unsigned long rds_sysctl_reconnect_min = 1;
     42static unsigned long rds_sysctl_reconnect_max = ~0UL;
     43
     44unsigned long rds_sysctl_reconnect_min_jiffies;
     45unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
     46
     47unsigned int  rds_sysctl_max_unacked_packets = 8;
     48unsigned int  rds_sysctl_max_unacked_bytes = (16 << 20);
     49
     50unsigned int rds_sysctl_ping_enable = 1;
     51
     52static struct 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
     95void rds_sysctl_exit(void)
     96{
     97	unregister_net_sysctl_table(rds_sysctl_reg_table);
     98}
     99
    100int rds_sysctl_init(void)
    101{
    102	rds_sysctl_reconnect_min = msecs_to_jiffies(1);
    103	rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
    104
    105	rds_sysctl_reg_table =
    106		register_net_sysctl(&init_net, "net/rds", rds_sysctl_rds_table);
    107	if (!rds_sysctl_reg_table)
    108		return -ENOMEM;
    109	return 0;
    110}