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root/net/sctp/sysctl.c

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DEFINITIONS

This source file includes following definitions.
  1. sctp_sysctl_register
  2. sctp_sysctl_unregister

/* SCTP kernel implementation
 * (C) Copyright IBM Corp. 2002, 2004
 * Copyright (c) 2002 Intel Corp.
 *
 * This file is part of the SCTP kernel implementation
 *
 * Sysctl related interfaces for SCTP.
 *
 * This SCTP implementation 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, or (at your option)
 * any later version.
 *
 * This SCTP implementation is distributed in the hope that it
 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
 *                 ************************
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU CC; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Please send any bug reports or fixes you make to the
 * email address(es):
 *    lksctp developers <lksctp-developers@lists.sourceforge.net>
 *
 * Or submit a bug report through the following website:
 *    http://www.sf.net/projects/lksctp
 *
 * Written or modified by:
 *    Mingqin Liu           <liuming@us.ibm.com>
 *    Jon Grimm             <jgrimm@us.ibm.com>
 *    Ardelle Fan           <ardelle.fan@intel.com>
 *    Ryan Layer            <rmlayer@us.ibm.com>
 *    Sridhar Samudrala     <sri@us.ibm.com>
 *
 * Any bugs reported given to us we will try to fix... any fixes shared will
 * be incorporated into the next SCTP release.
 */

#include <net/sctp/structs.h>
#include <net/sctp/sctp.h>
#include <linux/sysctl.h>

static int zero = 0;
static int one = 1;
static int timer_max = 86400000; /* ms in one day */
static int int_max = INT_MAX;
static long sack_timer_min = 1;
static long sack_timer_max = 500;

extern int sysctl_sctp_mem[3];
extern int sysctl_sctp_rmem[3];
extern int sysctl_sctp_wmem[3];

static ctl_table sctp_table[] = {
        {
                .ctl_name       = NET_SCTP_RTO_INITIAL,
                .procname       = "rto_initial",
                .data           = &sctp_rto_initial,
                .maxlen         = sizeof(unsigned int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &one,
                .extra2         = &timer_max
        },
        {
                .ctl_name       = NET_SCTP_RTO_MIN,
                .procname       = "rto_min",
                .data           = &sctp_rto_min,
                .maxlen         = sizeof(unsigned int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &one,
                .extra2         = &timer_max
        },
        {
                .ctl_name       = NET_SCTP_RTO_MAX,
                .procname       = "rto_max",
                .data           = &sctp_rto_max,
                .maxlen         = sizeof(unsigned int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &one,
                .extra2         = &timer_max
        },
        {
                .ctl_name       = NET_SCTP_VALID_COOKIE_LIFE,
                .procname       = "valid_cookie_life",
                .data           = &sctp_valid_cookie_life,
                .maxlen         = sizeof(unsigned int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &one,
                .extra2         = &timer_max
        },
        {
                .ctl_name       = NET_SCTP_MAX_BURST,
                .procname       = "max_burst",
                .data           = &sctp_max_burst,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &zero,
                .extra2         = &int_max
        },
        {
                .ctl_name       = NET_SCTP_ASSOCIATION_MAX_RETRANS,
                .procname       = "association_max_retrans",
                .data           = &sctp_max_retrans_association,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &one,
                .extra2         = &int_max
        },
        {
                .ctl_name       = NET_SCTP_SNDBUF_POLICY,
                .procname       = "sndbuf_policy",
                .data           = &sctp_sndbuf_policy,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
                .strategy       = &sysctl_intvec
        },
        {
                .ctl_name       = NET_SCTP_RCVBUF_POLICY,
                .procname       = "rcvbuf_policy",
                .data           = &sctp_rcvbuf_policy,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
                .strategy       = &sysctl_intvec
        },
        {
                .ctl_name       = NET_SCTP_PATH_MAX_RETRANS,
                .procname       = "path_max_retrans",
                .data           = &sctp_max_retrans_path,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &one,
                .extra2         = &int_max
        },
        {
                .ctl_name       = NET_SCTP_MAX_INIT_RETRANSMITS,
                .procname       = "max_init_retransmits",
                .data           = &sctp_max_retrans_init,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &one,
                .extra2         = &int_max
        },
        {
                .ctl_name       = NET_SCTP_HB_INTERVAL,
                .procname       = "hb_interval",
                .data           = &sctp_hb_interval,
                .maxlen         = sizeof(unsigned int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &one,
                .extra2         = &timer_max
        },
        {
                .ctl_name       = NET_SCTP_PRESERVE_ENABLE,
                .procname       = "cookie_preserve_enable",
                .data           = &sctp_cookie_preserve_enable,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
                .strategy       = &sysctl_intvec
        },
        {
                .ctl_name       = NET_SCTP_RTO_ALPHA,
                .procname       = "rto_alpha_exp_divisor",
                .data           = &sctp_rto_alpha,
                .maxlen         = sizeof(int),
                .mode           = 0444,
                .proc_handler   = &proc_dointvec,
                .strategy       = &sysctl_intvec
        },
        {
                .ctl_name       = NET_SCTP_RTO_BETA,
                .procname       = "rto_beta_exp_divisor",
                .data           = &sctp_rto_beta,
                .maxlen         = sizeof(int),
                .mode           = 0444,
                .proc_handler   = &proc_dointvec,
                .strategy       = &sysctl_intvec
        },
        {
                .ctl_name       = NET_SCTP_ADDIP_ENABLE,
                .procname       = "addip_enable",
                .data           = &sctp_addip_enable,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
                .strategy       = &sysctl_intvec
        },
        {
                .ctl_name       = NET_SCTP_PRSCTP_ENABLE,
                .procname       = "prsctp_enable",
                .data           = &sctp_prsctp_enable,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
                .strategy       = &sysctl_intvec
        },
        {
                .ctl_name       = NET_SCTP_SACK_TIMEOUT,
                .procname       = "sack_timeout",
                .data           = &sctp_sack_timeout,
                .maxlen         = sizeof(long),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec_minmax,
                .strategy       = &sysctl_intvec,
                .extra1         = &sack_timer_min,
                .extra2         = &sack_timer_max,
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
                .procname       = "sctp_mem",
                .data           = &sysctl_sctp_mem,
                .maxlen         = sizeof(sysctl_sctp_mem),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
                .procname       = "sctp_rmem",
                .data           = &sysctl_sctp_rmem,
                .maxlen         = sizeof(sysctl_sctp_rmem),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
                .procname       = "sctp_wmem",
                .data           = &sysctl_sctp_wmem,
                .maxlen         = sizeof(sysctl_sctp_wmem),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
                .procname       = "auth_enable",
                .data           = &sctp_auth_enable,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
                .strategy       = &sysctl_intvec
        },
        {
                .ctl_name       = CTL_UNNUMBERED,
                .procname       = "addip_noauth_enable",
                .data           = &sctp_addip_noauth,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = &proc_dointvec,
                .strategy       = &sysctl_intvec
        },
        { .ctl_name = 0 }
};

static struct ctl_path sctp_path[] = {
        { .procname = "net", .ctl_name = CTL_NET, },
        { .procname = "sctp", .ctl_name = NET_SCTP, },
        { }
};

static struct ctl_table_header * sctp_sysctl_header;

/* Sysctl registration.  */
void sctp_sysctl_register(void)
{
        sctp_sysctl_header = register_sysctl_paths(sctp_path, sctp_table);
}

/* Sysctl deregistration.  */
void sctp_sysctl_unregister(void)
{
        unregister_sysctl_table(sctp_sysctl_header);
}

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