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-rw-r--r--net/sctp/sysctl.c251
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diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
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+/* SCTP kernel reference Implementation
+ * (C) Copyright IBM Corp. 2002, 2004
+ * Copyright (c) 2002 Intel Corp.
+ *
+ * This file is part of the SCTP kernel reference Implementation
+ *
+ * Sysctl related interfaces for SCTP.
+ *
+ * The SCTP reference 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.
+ *
+ * The SCTP reference 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 <linux/sysctl.h>
+
+static ctl_handler sctp_sysctl_jiffies_ms;
+static long rto_timer_min = 1;
+static long rto_timer_max = 86400000; /* One day */
+
+static ctl_table sctp_table[] = {
+ {
+ .ctl_name = NET_SCTP_RTO_INITIAL,
+ .procname = "rto_initial",
+ .data = &sctp_rto_initial,
+ .maxlen = sizeof(long),
+ .mode = 0644,
+ .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
+ .strategy = &sctp_sysctl_jiffies_ms,
+ .extra1 = &rto_timer_min,
+ .extra2 = &rto_timer_max
+ },
+ {
+ .ctl_name = NET_SCTP_RTO_MIN,
+ .procname = "rto_min",
+ .data = &sctp_rto_min,
+ .maxlen = sizeof(long),
+ .mode = 0644,
+ .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
+ .strategy = &sctp_sysctl_jiffies_ms,
+ .extra1 = &rto_timer_min,
+ .extra2 = &rto_timer_max
+ },
+ {
+ .ctl_name = NET_SCTP_RTO_MAX,
+ .procname = "rto_max",
+ .data = &sctp_rto_max,
+ .maxlen = sizeof(long),
+ .mode = 0644,
+ .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
+ .strategy = &sctp_sysctl_jiffies_ms,
+ .extra1 = &rto_timer_min,
+ .extra2 = &rto_timer_max
+ },
+ {
+ .ctl_name = NET_SCTP_VALID_COOKIE_LIFE,
+ .procname = "valid_cookie_life",
+ .data = &sctp_valid_cookie_life,
+ .maxlen = sizeof(long),
+ .mode = 0644,
+ .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
+ .strategy = &sctp_sysctl_jiffies_ms,
+ .extra1 = &rto_timer_min,
+ .extra2 = &rto_timer_max
+ },
+ {
+ .ctl_name = NET_SCTP_MAX_BURST,
+ .procname = "max_burst",
+ .data = &sctp_max_burst,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec
+ },
+ {
+ .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
+ },
+ {
+ .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
+ },
+ {
+ .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
+ },
+ {
+ .ctl_name = NET_SCTP_HB_INTERVAL,
+ .procname = "hb_interval",
+ .data = &sctp_hb_interval,
+ .maxlen = sizeof(long),
+ .mode = 0644,
+ .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
+ .strategy = &sctp_sysctl_jiffies_ms,
+ .extra1 = &rto_timer_min,
+ .extra2 = &rto_timer_max
+ },
+ {
+ .ctl_name = NET_SCTP_PRESERVE_ENABLE,
+ .procname = "cookie_preserve_enable",
+ .data = &sctp_cookie_preserve_enable,
+ .maxlen = sizeof(long),
+ .mode = 0644,
+ .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
+ .strategy = &sctp_sysctl_jiffies_ms,
+ .extra1 = &rto_timer_min,
+ .extra2 = &rto_timer_max
+ },
+ {
+ .ctl_name = NET_SCTP_RTO_ALPHA,
+ .procname = "rto_alpha_exp_divisor",
+ .data = &sctp_rto_alpha,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec
+ },
+ {
+ .ctl_name = NET_SCTP_RTO_BETA,
+ .procname = "rto_beta_exp_divisor",
+ .data = &sctp_rto_beta,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec
+ },
+ {
+ .ctl_name = NET_SCTP_ADDIP_ENABLE,
+ .procname = "addip_enable",
+ .data = &sctp_addip_enable,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec
+ },
+ {
+ .ctl_name = NET_SCTP_PRSCTP_ENABLE,
+ .procname = "prsctp_enable",
+ .data = &sctp_prsctp_enable,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec
+ },
+ { .ctl_name = 0 }
+};
+
+static ctl_table sctp_net_table[] = {
+ {
+ .ctl_name = NET_SCTP,
+ .procname = "sctp",
+ .mode = 0555,
+ .child = sctp_table
+ },
+ { .ctl_name = 0 }
+};
+
+static ctl_table sctp_root_table[] = {
+ {
+ .ctl_name = CTL_NET,
+ .procname = "net",
+ .mode = 0555,
+ .child = sctp_net_table
+ },
+ { .ctl_name = 0 }
+};
+
+static struct ctl_table_header * sctp_sysctl_header;
+
+/* Sysctl registration. */
+void sctp_sysctl_register(void)
+{
+ sctp_sysctl_header = register_sysctl_table(sctp_root_table, 0);
+}
+
+/* Sysctl deregistration. */
+void sctp_sysctl_unregister(void)
+{
+ unregister_sysctl_table(sctp_sysctl_header);
+}
+
+/* Strategy function to convert jiffies to milliseconds. */
+static int sctp_sysctl_jiffies_ms(ctl_table *table, int __user *name, int nlen,
+ void __user *oldval, size_t __user *oldlenp,
+ void __user *newval, size_t newlen, void **context) {
+
+ if (oldval) {
+ size_t olen;
+
+ if (oldlenp) {
+ if (get_user(olen, oldlenp))
+ return -EFAULT;
+
+ if (olen != sizeof (int))
+ return -EINVAL;
+ }
+ if (put_user((*(int *)(table->data) * 1000) / HZ,
+ (int __user *)oldval) ||
+ (oldlenp && put_user(sizeof (int), oldlenp)))
+ return -EFAULT;
+ }
+ if (newval && newlen) {
+ int new;
+
+ if (newlen != sizeof (int))
+ return -EINVAL;
+
+ if (get_user(new, (int __user *)newval))
+ return -EFAULT;
+
+ *(int *)(table->data) = (new * HZ) / 1000;
+ }
+ return 1;
+}
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