[mirror_ubuntu-bionic-kernel.git] / net / sctp / sysctl.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, see
 * <http://www.gnu.org/licenses/>.
 *
 * Please send any bug reports or fixes you make to the
 * email address(es):
 *    lksctp developers <linux-sctp@vger.kernel.org>
 *
 * 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>
 */

#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(struct ctl_table *ctl,
				int write,
				void __user *buffer, size_t *lenp,

				loff_t *ppos);
static struct 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 struct 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(struct ctl_table *ctl,
				int write,
				void __user *buffer, size_t *lenp,
				loff_t *ppos)
{
	struct net *net = current->nsproxy->net_ns;
	char tmp[8];
	struct 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)
{
	struct ctl_table *table;

	table = net->sctp.sysctl_header->ctl_table_arg;
	unregister_net_sysctl_table(net->sctp.sysctl_header);
	kfree(table);
}

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);
}
Commit	Line	Data
60c778b2	1	/* SCTP kernel implementation
1da177e4 LT	2	* (C) Copyright IBM Corp. 2002, 2004
	3	* Copyright (c) 2002 Intel Corp.
	4	*
60c778b2	5	* This file is part of the SCTP kernel implementation
1da177e4 LT	6	*
	7	* Sysctl related interfaces for SCTP.
	8	*
60c778b2	9	* This SCTP implementation is free software;
1da177e4 LT	10	* you can redistribute it and/or modify it under the terms of
	11	* the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2, or (at your option)
	13	* any later version.
	14	*
60c778b2	15	* This SCTP implementation is distributed in the hope that it
1da177e4 LT	16	* will be useful, but WITHOUT ANY WARRANTY; without even the implied
	17	* ************************
	18	* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	19	* See the GNU General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
4b2f13a2 JK	22	* along with GNU CC; see the file COPYING. If not, see
4b2f13a2 JK	23	* <http://www.gnu.org/licenses/>.
1da177e4 LT	24	*
	25	* Please send any bug reports or fixes you make to the
	26	* email address(es):
91705c61	27	* lksctp developers <linux-sctp@vger.kernel.org>
1da177e4	28	*
1da177e4 LT	29	* Written or modified by:
	30	* Mingqin Liu <liuming@us.ibm.com>
	31	* Jon Grimm <jgrimm@us.ibm.com>
	32	* Ardelle Fan <ardelle.fan@intel.com>
	33	* Ryan Layer <rmlayer@us.ibm.com>
	34	* Sridhar Samudrala <sri@us.ibm.com>
1da177e4 LT	35	*/
	36
	37	#include <net/sctp/structs.h>
8c5955d8	38	#include <net/sctp/sctp.h>
1da177e4 LT	39	#include <linux/sysctl.h>
1da177e4 LT	40
3fd091e7 VY	41	static int zero = 0;
	42	static int one = 1;
	43	static int timer_max = 86400000; /* ms in one day */
	44	static int int_max = INT_MAX;
d48e074d JMG	45	static int sack_timer_min = 1;
d48e074d JMG	46	static int sack_timer_max = 500;
72388433	47	static int addr_scope_max = 3; /* check sctp_scope_policy_t in include/net/sctp/constants.h for max entries */
90f2f531	48	static int rwnd_scale_max = 16;
2692ba61 XW	49	static unsigned long max_autoclose_min = 0;
	50	static unsigned long max_autoclose_max =
	51	(MAX_SCHEDULE_TIMEOUT / HZ > UINT_MAX)
	52	? UINT_MAX : MAX_SCHEDULE_TIMEOUT / HZ;
1da177e4	53
8d987e5c	54	extern long sysctl_sctp_mem[3];
007e3936 VY	55	extern int sysctl_sctp_rmem[3];
007e3936 VY	56	extern int sysctl_sctp_wmem[3];
4d93df0a	57
fe2c6338	58	static int proc_sctp_do_hmac_alg(struct ctl_table *ctl,
3c68198e NH	59	int write,
	60	void __user buffer, size_t lenp,
	61
	62	loff_t *ppos);
fe2c6338	63	static struct ctl_table sctp_table[] = {
e1fc3b14 EB	64	{
	65	.procname = "sctp_mem",
	66	.data = &sysctl_sctp_mem,
	67	.maxlen = sizeof(sysctl_sctp_mem),
	68	.mode = 0644,
	69	.proc_handler = proc_doulongvec_minmax
	70	},
	71	{
	72	.procname = "sctp_rmem",
	73	.data = &sysctl_sctp_rmem,
	74	.maxlen = sizeof(sysctl_sctp_rmem),
	75	.mode = 0644,
	76	.proc_handler = proc_dointvec,
	77	},
	78	{
	79	.procname = "sctp_wmem",
	80	.data = &sysctl_sctp_wmem,
	81	.maxlen = sizeof(sysctl_sctp_wmem),
	82	.mode = 0644,
	83	.proc_handler = proc_dointvec,
	84	},
	85
	86	{ /* sentinel */ }
	87	};
	88
fe2c6338	89	static struct ctl_table sctp_net_table[] = {
1da177e4	90	{
1da177e4	91	.procname = "rto_initial",
e1fc3b14	92	.data = &init_net.sctp.rto_initial,
3fd091e7	93	.maxlen = sizeof(unsigned int),
1da177e4	94	.mode = 0644,
6d9f239a	95	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	96	.extra1 = &one,
3fd091e7 VY	97	.extra2 = &timer_max
1da177e4 LT	98	},
1da177e4 LT	99	{
1da177e4	100	.procname = "rto_min",
e1fc3b14	101	.data = &init_net.sctp.rto_min,
3fd091e7	102	.maxlen = sizeof(unsigned int),
1da177e4	103	.mode = 0644,
6d9f239a	104	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	105	.extra1 = &one,
3fd091e7 VY	106	.extra2 = &timer_max
1da177e4 LT	107	},
1da177e4 LT	108	{
1da177e4	109	.procname = "rto_max",
e1fc3b14	110	.data = &init_net.sctp.rto_max,
3fd091e7	111	.maxlen = sizeof(unsigned int),
1da177e4	112	.mode = 0644,
6d9f239a	113	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	114	.extra1 = &one,
3fd091e7 VY	115	.extra2 = &timer_max
1da177e4 LT	116	},
1da177e4 LT	117	{
e1fc3b14 EB	118	.procname = "rto_alpha_exp_divisor",
	119	.data = &init_net.sctp.rto_alpha,
	120	.maxlen = sizeof(int),
	121	.mode = 0444,
	122	.proc_handler = proc_dointvec,
	123	},
	124	{
	125	.procname = "rto_beta_exp_divisor",
	126	.data = &init_net.sctp.rto_beta,
	127	.maxlen = sizeof(int),
	128	.mode = 0444,
	129	.proc_handler = proc_dointvec,
1da177e4 LT	130	},
1da177e4 LT	131	{
1da177e4	132	.procname = "max_burst",
e1fc3b14	133	.data = &init_net.sctp.max_burst,
1da177e4 LT	134	.maxlen = sizeof(int),
1da177e4 LT	135	.mode = 0644,
6d9f239a	136	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	137	.extra1 = &zero,
3fd091e7 VY	138	.extra2 = &int_max
1da177e4 LT	139	},
1da177e4 LT	140	{
e1fc3b14 EB	141	.procname = "cookie_preserve_enable",
e1fc3b14 EB	142	.data = &init_net.sctp.cookie_preserve_enable,
1da177e4 LT	143	.maxlen = sizeof(int),
1da177e4 LT	144	.mode = 0644,
e1fc3b14 EB	145	.proc_handler = proc_dointvec,
e1fc3b14 EB	146	},
3c68198e NH	147	{
	148	.procname = "cookie_hmac_alg",
	149	.maxlen = 8,
	150	.mode = 0644,
	151	.proc_handler = proc_sctp_do_hmac_alg,
	152	},
e1fc3b14 EB	153	{
	154	.procname = "valid_cookie_life",
	155	.data = &init_net.sctp.valid_cookie_life,
	156	.maxlen = sizeof(unsigned int),
	157	.mode = 0644,
6d9f239a	158	.proc_handler = proc_dointvec_minmax,
e1fc3b14 EB	159	.extra1 = &one,
e1fc3b14 EB	160	.extra2 = &timer_max
1da177e4	161	},
4eb701df	162	{
e1fc3b14 EB	163	.procname = "sack_timeout",
e1fc3b14 EB	164	.data = &init_net.sctp.sack_timeout,
4eb701df NH	165	.maxlen = sizeof(int),
4eb701df NH	166	.mode = 0644,
e1fc3b14 EB	167	.proc_handler = proc_dointvec_minmax,
	168	.extra1 = &sack_timer_min,
	169	.extra2 = &sack_timer_max,
4eb701df	170	},
049b3ff5	171	{
e1fc3b14 EB	172	.procname = "hb_interval",
	173	.data = &init_net.sctp.hb_interval,
	174	.maxlen = sizeof(unsigned int),
049b3ff5	175	.mode = 0644,
e1fc3b14 EB	176	.proc_handler = proc_dointvec_minmax,
	177	.extra1 = &one,
	178	.extra2 = &timer_max
049b3ff5	179	},
1da177e4	180	{
e1fc3b14 EB	181	.procname = "association_max_retrans",
e1fc3b14 EB	182	.data = &init_net.sctp.max_retrans_association,
1da177e4 LT	183	.maxlen = sizeof(int),
1da177e4 LT	184	.mode = 0644,
6d9f239a	185	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	186	.extra1 = &one,
3fd091e7 VY	187	.extra2 = &int_max
1da177e4	188	},
5aa93bcf	189	{
e1fc3b14 EB	190	.procname = "path_max_retrans",
e1fc3b14 EB	191	.data = &init_net.sctp.max_retrans_path,
5aa93bcf NH	192	.maxlen = sizeof(int),
	193	.mode = 0644,
	194	.proc_handler = proc_dointvec_minmax,
e1fc3b14	195	.extra1 = &one,
5aa93bcf NH	196	.extra2 = &int_max
5aa93bcf NH	197	},
1da177e4	198	{
1da177e4	199	.procname = "max_init_retransmits",
e1fc3b14	200	.data = &init_net.sctp.max_retrans_init,
1da177e4 LT	201	.maxlen = sizeof(int),
1da177e4 LT	202	.mode = 0644,
6d9f239a	203	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	204	.extra1 = &one,
3fd091e7 VY	205	.extra2 = &int_max
1da177e4 LT	206	},
1da177e4 LT	207	{
e1fc3b14 EB	208	.procname = "pf_retrans",
	209	.data = &init_net.sctp.pf_retrans,
	210	.maxlen = sizeof(int),
1da177e4	211	.mode = 0644,
6d9f239a	212	.proc_handler = proc_dointvec_minmax,
e1fc3b14 EB	213	.extra1 = &zero,
e1fc3b14 EB	214	.extra2 = &int_max
1da177e4 LT	215	},
1da177e4 LT	216	{
e1fc3b14 EB	217	.procname = "sndbuf_policy",
e1fc3b14 EB	218	.data = &init_net.sctp.sndbuf_policy,
8116ffad	219	.maxlen = sizeof(int),
1da177e4	220	.mode = 0644,
6d9f239a	221	.proc_handler = proc_dointvec,
1da177e4 LT	222	},
1da177e4 LT	223	{
e1fc3b14 EB	224	.procname = "rcvbuf_policy",
e1fc3b14 EB	225	.data = &init_net.sctp.rcvbuf_policy,
dd51be0f MH	226	.maxlen = sizeof(int),
	227	.mode = 0644,
	228	.proc_handler = proc_dointvec,
	229	},
	230	{
	231	.procname = "default_auto_asconf",
e1fc3b14	232	.data = &init_net.sctp.default_auto_asconf,
1da177e4 LT	233	.maxlen = sizeof(int),
1da177e4 LT	234	.mode = 0644,
6d9f239a	235	.proc_handler = proc_dointvec,
1da177e4 LT	236	},
1da177e4 LT	237	{
e1fc3b14 EB	238	.procname = "addip_enable",
e1fc3b14 EB	239	.data = &init_net.sctp.addip_enable,
1da177e4 LT	240	.maxlen = sizeof(int),
1da177e4 LT	241	.mode = 0644,
6d9f239a	242	.proc_handler = proc_dointvec,
1da177e4	243	},
2f85a429	244	{
e1fc3b14 EB	245	.procname = "addip_noauth_enable",
e1fc3b14 EB	246	.data = &init_net.sctp.addip_noauth,
d48e074d	247	.maxlen = sizeof(int),
2f85a429	248	.mode = 0644,
6d9f239a	249	.proc_handler = proc_dointvec,
4d93df0a NH	250	},
4d93df0a NH	251	{
e1fc3b14 EB	252	.procname = "prsctp_enable",
e1fc3b14 EB	253	.data = &init_net.sctp.prsctp_enable,
a29a5bd4 VY	254	.maxlen = sizeof(int),
a29a5bd4 VY	255	.mode = 0644,
6d9f239a	256	.proc_handler = proc_dointvec,
a29a5bd4	257	},
73d9c4fd	258	{
e1fc3b14 EB	259	.procname = "auth_enable",
e1fc3b14 EB	260	.data = &init_net.sctp.auth_enable,
73d9c4fd VY	261	.maxlen = sizeof(int),
73d9c4fd VY	262	.mode = 0644,
6d9f239a	263	.proc_handler = proc_dointvec,
73d9c4fd	264	},
72388433	265	{
72388433	266	.procname = "addr_scope_policy",
e1fc3b14	267	.data = &init_net.sctp.scope_policy,
72388433 BD	268	.maxlen = sizeof(int),
72388433 BD	269	.mode = 0644,
6d456111	270	.proc_handler = proc_dointvec_minmax,
72388433 BD	271	.extra1 = &zero,
	272	.extra2 = &addr_scope_max,
	273	},
90f2f531	274	{
90f2f531	275	.procname = "rwnd_update_shift",
e1fc3b14	276	.data = &init_net.sctp.rwnd_upd_shift,
90f2f531 VY	277	.maxlen = sizeof(int),
	278	.mode = 0644,
	279	.proc_handler = &proc_dointvec_minmax,
90f2f531 VY	280	.extra1 = &one,
	281	.extra2 = &rwnd_scale_max,
	282	},
2692ba61 XW	283	{
2692ba61 XW	284	.procname = "max_autoclose",
e1fc3b14	285	.data = &init_net.sctp.max_autoclose,
2692ba61 XW	286	.maxlen = sizeof(unsigned long),
	287	.mode = 0644,
	288	.proc_handler = &proc_doulongvec_minmax,
	289	.extra1 = &max_autoclose_min,
	290	.extra2 = &max_autoclose_max,
	291	},
71acc0dd	292
d7fc02c7	293	{ /* sentinel */ }
1da177e4 LT	294	};
1da177e4 LT	295
fe2c6338	296	static int proc_sctp_do_hmac_alg(struct ctl_table *ctl,
3c68198e NH	297	int write,
	298	void __user buffer, size_t lenp,
	299	loff_t *ppos)
	300	{
	301	struct net *net = current->nsproxy->net_ns;
	302	char tmp[8];
fe2c6338	303	struct ctl_table tbl;
3c68198e NH	304	int ret;
	305	int changed = 0;
	306	char *none = "none";
	307
	308	memset(&tbl, 0, sizeof(struct ctl_table));
	309
	310	if (write) {
	311	tbl.data = tmp;
	312	tbl.maxlen = 8;
	313	} else {
	314	tbl.data = net->sctp.sctp_hmac_alg ? : none;
	315	tbl.maxlen = strlen(tbl.data);
	316	}
	317	ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
	318
	319	if (write) {
	320	#ifdef CONFIG_CRYPTO_MD5
	321	if (!strncmp(tmp, "md5", 3)) {
	322	net->sctp.sctp_hmac_alg = "md5";
	323	changed = 1;
	324	}
	325	#endif
	326	#ifdef CONFIG_CRYPTO_SHA1
	327	if (!strncmp(tmp, "sha1", 4)) {
	328	net->sctp.sctp_hmac_alg = "sha1";
	329	changed = 1;
	330	}
	331	#endif
	332	if (!strncmp(tmp, "none", 4)) {
	333	net->sctp.sctp_hmac_alg = NULL;
	334	changed = 1;
	335	}
	336
	337	if (!changed)
	338	ret = -EINVAL;
	339	}
	340
	341	return ret;
	342	}
	343
ebb7e95d EB	344	int sctp_sysctl_net_register(struct net *net)
	345	{
	346	struct ctl_table *table;
e1fc3b14	347	int i;
ebb7e95d EB	348
	349	table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
	350	if (!table)
	351	return -ENOMEM;
	352
e1fc3b14 EB	353	for (i = 0; table[i].data; i++)
	354	table[i].data += (char )(&net->sctp) - (char )&init_net.sctp;
	355
ebb7e95d EB	356	net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
	357	return 0;
	358	}
	359
	360	void sctp_sysctl_net_unregister(struct net *net)
	361	{
5f19d121 VY	362	struct ctl_table *table;
	363
	364	table = net->sctp.sysctl_header->ctl_table_arg;
ebb7e95d	365	unregister_net_sysctl_table(net->sctp.sysctl_header);
5f19d121	366	kfree(table);
ebb7e95d EB	367	}
ebb7e95d EB	368
1da177e4 LT	369	static struct ctl_table_header * sctp_sysctl_header;
	370
	371	/* Sysctl registration. */
	372	void sctp_sysctl_register(void)
	373	{
ec8f23ce	374	sctp_sysctl_header = register_net_sysctl(&init_net, "net/sctp", sctp_table);
1da177e4 LT	375	}
	376
	377	/* Sysctl deregistration. */
	378	void sctp_sysctl_unregister(void)
	379	{
5dd3df10	380	unregister_net_sysctl_table(sctp_sysctl_header);
1da177e4	381	}