mirror of https://gitee.com/openkylin/linux.git
385 lines
9.3 KiB
C
385 lines
9.3 KiB
C
/* 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 int sack_timer_min = 1;
|
|
static int sack_timer_max = 500;
|
|
static int addr_scope_max = 3; /* check sctp_scope_policy_t in include/net/sctp/constants.h for max entries */
|
|
static int rwnd_scale_max = 16;
|
|
static unsigned long max_autoclose_min = 0;
|
|
static unsigned long max_autoclose_max =
|
|
(MAX_SCHEDULE_TIMEOUT / HZ > UINT_MAX)
|
|
? UINT_MAX : MAX_SCHEDULE_TIMEOUT / HZ;
|
|
|
|
extern long sysctl_sctp_mem[3];
|
|
extern int sysctl_sctp_rmem[3];
|
|
extern int sysctl_sctp_wmem[3];
|
|
|
|
static int proc_sctp_do_hmac_alg(ctl_table *ctl,
|
|
int write,
|
|
void __user *buffer, size_t *lenp,
|
|
|
|
loff_t *ppos);
|
|
static ctl_table sctp_table[] = {
|
|
{
|
|
.procname = "sctp_mem",
|
|
.data = &sysctl_sctp_mem,
|
|
.maxlen = sizeof(sysctl_sctp_mem),
|
|
.mode = 0644,
|
|
.proc_handler = proc_doulongvec_minmax
|
|
},
|
|
{
|
|
.procname = "sctp_rmem",
|
|
.data = &sysctl_sctp_rmem,
|
|
.maxlen = sizeof(sysctl_sctp_rmem),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "sctp_wmem",
|
|
.data = &sysctl_sctp_wmem,
|
|
.maxlen = sizeof(sysctl_sctp_wmem),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static ctl_table sctp_net_table[] = {
|
|
{
|
|
.procname = "rto_initial",
|
|
.data = &init_net.sctp.rto_initial,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.procname = "rto_min",
|
|
.data = &init_net.sctp.rto_min,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.procname = "rto_max",
|
|
.data = &init_net.sctp.rto_max,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.procname = "rto_alpha_exp_divisor",
|
|
.data = &init_net.sctp.rto_alpha,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0444,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "rto_beta_exp_divisor",
|
|
.data = &init_net.sctp.rto_beta,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0444,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "max_burst",
|
|
.data = &init_net.sctp.max_burst,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &zero,
|
|
.extra2 = &int_max
|
|
},
|
|
{
|
|
.procname = "cookie_preserve_enable",
|
|
.data = &init_net.sctp.cookie_preserve_enable,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "cookie_hmac_alg",
|
|
.maxlen = 8,
|
|
.mode = 0644,
|
|
.proc_handler = proc_sctp_do_hmac_alg,
|
|
},
|
|
{
|
|
.procname = "valid_cookie_life",
|
|
.data = &init_net.sctp.valid_cookie_life,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.procname = "sack_timeout",
|
|
.data = &init_net.sctp.sack_timeout,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &sack_timer_min,
|
|
.extra2 = &sack_timer_max,
|
|
},
|
|
{
|
|
.procname = "hb_interval",
|
|
.data = &init_net.sctp.hb_interval,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.procname = "association_max_retrans",
|
|
.data = &init_net.sctp.max_retrans_association,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &one,
|
|
.extra2 = &int_max
|
|
},
|
|
{
|
|
.procname = "path_max_retrans",
|
|
.data = &init_net.sctp.max_retrans_path,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &one,
|
|
.extra2 = &int_max
|
|
},
|
|
{
|
|
.procname = "max_init_retransmits",
|
|
.data = &init_net.sctp.max_retrans_init,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &one,
|
|
.extra2 = &int_max
|
|
},
|
|
{
|
|
.procname = "pf_retrans",
|
|
.data = &init_net.sctp.pf_retrans,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &zero,
|
|
.extra2 = &int_max
|
|
},
|
|
{
|
|
.procname = "sndbuf_policy",
|
|
.data = &init_net.sctp.sndbuf_policy,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "rcvbuf_policy",
|
|
.data = &init_net.sctp.rcvbuf_policy,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "default_auto_asconf",
|
|
.data = &init_net.sctp.default_auto_asconf,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "addip_enable",
|
|
.data = &init_net.sctp.addip_enable,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "addip_noauth_enable",
|
|
.data = &init_net.sctp.addip_noauth,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "prsctp_enable",
|
|
.data = &init_net.sctp.prsctp_enable,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "auth_enable",
|
|
.data = &init_net.sctp.auth_enable,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "addr_scope_policy",
|
|
.data = &init_net.sctp.scope_policy,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &zero,
|
|
.extra2 = &addr_scope_max,
|
|
},
|
|
{
|
|
.procname = "rwnd_update_shift",
|
|
.data = &init_net.sctp.rwnd_upd_shift,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_minmax,
|
|
.extra1 = &one,
|
|
.extra2 = &rwnd_scale_max,
|
|
},
|
|
{
|
|
.procname = "max_autoclose",
|
|
.data = &init_net.sctp.max_autoclose,
|
|
.maxlen = sizeof(unsigned long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_doulongvec_minmax,
|
|
.extra1 = &max_autoclose_min,
|
|
.extra2 = &max_autoclose_max,
|
|
},
|
|
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static int proc_sctp_do_hmac_alg(ctl_table *ctl,
|
|
int write,
|
|
void __user *buffer, size_t *lenp,
|
|
loff_t *ppos)
|
|
{
|
|
struct net *net = current->nsproxy->net_ns;
|
|
char tmp[8];
|
|
ctl_table tbl;
|
|
int ret;
|
|
int changed = 0;
|
|
char *none = "none";
|
|
|
|
memset(&tbl, 0, sizeof(struct ctl_table));
|
|
|
|
if (write) {
|
|
tbl.data = tmp;
|
|
tbl.maxlen = 8;
|
|
} else {
|
|
tbl.data = net->sctp.sctp_hmac_alg ? : none;
|
|
tbl.maxlen = strlen(tbl.data);
|
|
}
|
|
ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
|
|
|
|
if (write) {
|
|
#ifdef CONFIG_CRYPTO_MD5
|
|
if (!strncmp(tmp, "md5", 3)) {
|
|
net->sctp.sctp_hmac_alg = "md5";
|
|
changed = 1;
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_CRYPTO_SHA1
|
|
if (!strncmp(tmp, "sha1", 4)) {
|
|
net->sctp.sctp_hmac_alg = "sha1";
|
|
changed = 1;
|
|
}
|
|
#endif
|
|
if (!strncmp(tmp, "none", 4)) {
|
|
net->sctp.sctp_hmac_alg = NULL;
|
|
changed = 1;
|
|
}
|
|
|
|
if (!changed)
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int sctp_sysctl_net_register(struct net *net)
|
|
{
|
|
struct ctl_table *table;
|
|
int i;
|
|
|
|
table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
|
|
if (!table)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; table[i].data; i++)
|
|
table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
|
|
|
|
net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
|
|
return 0;
|
|
}
|
|
|
|
void sctp_sysctl_net_unregister(struct net *net)
|
|
{
|
|
unregister_net_sysctl_table(net->sctp.sysctl_header);
|
|
}
|
|
|
|
static struct ctl_table_header * sctp_sysctl_header;
|
|
|
|
/* Sysctl registration. */
|
|
void sctp_sysctl_register(void)
|
|
{
|
|
sctp_sysctl_header = register_net_sysctl(&init_net, "net/sctp", sctp_table);
|
|
}
|
|
|
|
/* Sysctl deregistration. */
|
|
void sctp_sysctl_unregister(void)
|
|
{
|
|
unregister_net_sysctl_table(sctp_sysctl_header);
|
|
}
|