[linux.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, 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 <[email protected]>
 *
 * Or submit a bug report through the following website:
 *    http://www.sf.net/projects/lksctp
 *
 * Written or modified by:
 *    Mingqin Liu           <[email protected]>
 *    Jon Grimm             <[email protected]>
 *    Ardelle Fan           <[email protected]>
 *    Ryan Layer            <[email protected]>
 *    Sridhar Samudrala     <[email protected]>
 *
 * 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)
{
	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
	22	* along with GNU CC; see the file COPYING. If not, write to
	23	* the Free Software Foundation, 59 Temple Place - Suite 330,
	24	* Boston, MA 02111-1307, USA.
	25	*
	26	* Please send any bug reports or fixes you make to the
	27	* email address(es):
	28	* lksctp developers <[email protected]>
	29	*
	30	* Or submit a bug report through the following website:
	31	* http://www.sf.net/projects/lksctp
	32	*
	33	* Written or modified by:
	34	* Mingqin Liu <[email protected]>
	35	* Jon Grimm <[email protected]>
	36	* Ardelle Fan <[email protected]>
	37	* Ryan Layer <[email protected]>
	38	* Sridhar Samudrala <[email protected]>
	39	*
	40	* Any bugs reported given to us we will try to fix... any fixes shared will
	41	* be incorporated into the next SCTP release.
	42	*/
	43
	44	#include <net/sctp/structs.h>
8c5955d8	45	#include <net/sctp/sctp.h>
1da177e4 LT	46	#include <linux/sysctl.h>
1da177e4 LT	47
3fd091e7 VY	48	static int zero = 0;
	49	static int one = 1;
	50	static int timer_max = 86400000; /* ms in one day */
	51	static int int_max = INT_MAX;
d48e074d JMG	52	static int sack_timer_min = 1;
d48e074d JMG	53	static int sack_timer_max = 500;
72388433	54	static int addr_scope_max = 3; /* check sctp_scope_policy_t in include/net/sctp/constants.h for max entries */
90f2f531	55	static int rwnd_scale_max = 16;
2692ba61 XW	56	static unsigned long max_autoclose_min = 0;
	57	static unsigned long max_autoclose_max =
	58	(MAX_SCHEDULE_TIMEOUT / HZ > UINT_MAX)
	59	? UINT_MAX : MAX_SCHEDULE_TIMEOUT / HZ;
1da177e4	60
8d987e5c	61	extern long sysctl_sctp_mem[3];
007e3936 VY	62	extern int sysctl_sctp_rmem[3];
007e3936 VY	63	extern int sysctl_sctp_wmem[3];
4d93df0a	64
3c68198e NH	65	static int proc_sctp_do_hmac_alg(ctl_table *ctl,
	66	int write,
	67	void __user buffer, size_t lenp,
	68
	69	loff_t *ppos);
1da177e4	70	static ctl_table sctp_table[] = {
e1fc3b14 EB	71	{
	72	.procname = "sctp_mem",
	73	.data = &sysctl_sctp_mem,
	74	.maxlen = sizeof(sysctl_sctp_mem),
	75	.mode = 0644,
	76	.proc_handler = proc_doulongvec_minmax
	77	},
	78	{
	79	.procname = "sctp_rmem",
	80	.data = &sysctl_sctp_rmem,
	81	.maxlen = sizeof(sysctl_sctp_rmem),
	82	.mode = 0644,
	83	.proc_handler = proc_dointvec,
	84	},
	85	{
	86	.procname = "sctp_wmem",
	87	.data = &sysctl_sctp_wmem,
	88	.maxlen = sizeof(sysctl_sctp_wmem),
	89	.mode = 0644,
	90	.proc_handler = proc_dointvec,
	91	},
	92
	93	{ /* sentinel */ }
	94	};
	95
	96	static ctl_table sctp_net_table[] = {
1da177e4	97	{
1da177e4	98	.procname = "rto_initial",
e1fc3b14	99	.data = &init_net.sctp.rto_initial,
3fd091e7	100	.maxlen = sizeof(unsigned int),
1da177e4	101	.mode = 0644,
6d9f239a	102	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	103	.extra1 = &one,
3fd091e7 VY	104	.extra2 = &timer_max
1da177e4 LT	105	},
1da177e4 LT	106	{
1da177e4	107	.procname = "rto_min",
e1fc3b14	108	.data = &init_net.sctp.rto_min,
3fd091e7	109	.maxlen = sizeof(unsigned int),
1da177e4	110	.mode = 0644,
6d9f239a	111	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	112	.extra1 = &one,
3fd091e7 VY	113	.extra2 = &timer_max
1da177e4 LT	114	},
1da177e4 LT	115	{
1da177e4	116	.procname = "rto_max",
e1fc3b14	117	.data = &init_net.sctp.rto_max,
3fd091e7	118	.maxlen = sizeof(unsigned int),
1da177e4	119	.mode = 0644,
6d9f239a	120	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	121	.extra1 = &one,
3fd091e7 VY	122	.extra2 = &timer_max
1da177e4 LT	123	},
1da177e4 LT	124	{
e1fc3b14 EB	125	.procname = "rto_alpha_exp_divisor",
	126	.data = &init_net.sctp.rto_alpha,
	127	.maxlen = sizeof(int),
	128	.mode = 0444,
	129	.proc_handler = proc_dointvec,
	130	},
	131	{
	132	.procname = "rto_beta_exp_divisor",
	133	.data = &init_net.sctp.rto_beta,
	134	.maxlen = sizeof(int),
	135	.mode = 0444,
	136	.proc_handler = proc_dointvec,
1da177e4 LT	137	},
1da177e4 LT	138	{
1da177e4	139	.procname = "max_burst",
e1fc3b14	140	.data = &init_net.sctp.max_burst,
1da177e4 LT	141	.maxlen = sizeof(int),
1da177e4 LT	142	.mode = 0644,
6d9f239a	143	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	144	.extra1 = &zero,
3fd091e7 VY	145	.extra2 = &int_max
1da177e4 LT	146	},
1da177e4 LT	147	{
e1fc3b14 EB	148	.procname = "cookie_preserve_enable",
e1fc3b14 EB	149	.data = &init_net.sctp.cookie_preserve_enable,
1da177e4 LT	150	.maxlen = sizeof(int),
1da177e4 LT	151	.mode = 0644,
e1fc3b14 EB	152	.proc_handler = proc_dointvec,
e1fc3b14 EB	153	},
3c68198e NH	154	{
	155	.procname = "cookie_hmac_alg",
	156	.maxlen = 8,
	157	.mode = 0644,
	158	.proc_handler = proc_sctp_do_hmac_alg,
	159	},
e1fc3b14 EB	160	{
	161	.procname = "valid_cookie_life",
	162	.data = &init_net.sctp.valid_cookie_life,
	163	.maxlen = sizeof(unsigned int),
	164	.mode = 0644,
6d9f239a	165	.proc_handler = proc_dointvec_minmax,
e1fc3b14 EB	166	.extra1 = &one,
e1fc3b14 EB	167	.extra2 = &timer_max
1da177e4	168	},
4eb701df	169	{
e1fc3b14 EB	170	.procname = "sack_timeout",
e1fc3b14 EB	171	.data = &init_net.sctp.sack_timeout,
4eb701df NH	172	.maxlen = sizeof(int),
4eb701df NH	173	.mode = 0644,
e1fc3b14 EB	174	.proc_handler = proc_dointvec_minmax,
	175	.extra1 = &sack_timer_min,
	176	.extra2 = &sack_timer_max,
4eb701df	177	},
049b3ff5	178	{
e1fc3b14 EB	179	.procname = "hb_interval",
	180	.data = &init_net.sctp.hb_interval,
	181	.maxlen = sizeof(unsigned int),
049b3ff5	182	.mode = 0644,
e1fc3b14 EB	183	.proc_handler = proc_dointvec_minmax,
	184	.extra1 = &one,
	185	.extra2 = &timer_max
049b3ff5	186	},
1da177e4	187	{
e1fc3b14 EB	188	.procname = "association_max_retrans",
e1fc3b14 EB	189	.data = &init_net.sctp.max_retrans_association,
1da177e4 LT	190	.maxlen = sizeof(int),
1da177e4 LT	191	.mode = 0644,
6d9f239a	192	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	193	.extra1 = &one,
3fd091e7 VY	194	.extra2 = &int_max
1da177e4	195	},
5aa93bcf	196	{
e1fc3b14 EB	197	.procname = "path_max_retrans",
e1fc3b14 EB	198	.data = &init_net.sctp.max_retrans_path,
5aa93bcf NH	199	.maxlen = sizeof(int),
	200	.mode = 0644,
	201	.proc_handler = proc_dointvec_minmax,
e1fc3b14	202	.extra1 = &one,
5aa93bcf NH	203	.extra2 = &int_max
5aa93bcf NH	204	},
1da177e4	205	{
1da177e4	206	.procname = "max_init_retransmits",
e1fc3b14	207	.data = &init_net.sctp.max_retrans_init,
1da177e4 LT	208	.maxlen = sizeof(int),
1da177e4 LT	209	.mode = 0644,
6d9f239a	210	.proc_handler = proc_dointvec_minmax,
3fd091e7 VY	211	.extra1 = &one,
3fd091e7 VY	212	.extra2 = &int_max
1da177e4 LT	213	},
1da177e4 LT	214	{
e1fc3b14 EB	215	.procname = "pf_retrans",
	216	.data = &init_net.sctp.pf_retrans,
	217	.maxlen = sizeof(int),
1da177e4	218	.mode = 0644,
6d9f239a	219	.proc_handler = proc_dointvec_minmax,
e1fc3b14 EB	220	.extra1 = &zero,
e1fc3b14 EB	221	.extra2 = &int_max
1da177e4 LT	222	},
1da177e4 LT	223	{
e1fc3b14 EB	224	.procname = "sndbuf_policy",
e1fc3b14 EB	225	.data = &init_net.sctp.sndbuf_policy,
8116ffad	226	.maxlen = sizeof(int),
1da177e4	227	.mode = 0644,
6d9f239a	228	.proc_handler = proc_dointvec,
1da177e4 LT	229	},
1da177e4 LT	230	{
e1fc3b14 EB	231	.procname = "rcvbuf_policy",
e1fc3b14 EB	232	.data = &init_net.sctp.rcvbuf_policy,
dd51be0f MH	233	.maxlen = sizeof(int),
	234	.mode = 0644,
	235	.proc_handler = proc_dointvec,
	236	},
	237	{
	238	.procname = "default_auto_asconf",
e1fc3b14	239	.data = &init_net.sctp.default_auto_asconf,
1da177e4 LT	240	.maxlen = sizeof(int),
1da177e4 LT	241	.mode = 0644,
6d9f239a	242	.proc_handler = proc_dointvec,
1da177e4 LT	243	},
1da177e4 LT	244	{
e1fc3b14 EB	245	.procname = "addip_enable",
e1fc3b14 EB	246	.data = &init_net.sctp.addip_enable,
1da177e4 LT	247	.maxlen = sizeof(int),
1da177e4 LT	248	.mode = 0644,
6d9f239a	249	.proc_handler = proc_dointvec,
1da177e4	250	},
2f85a429	251	{
e1fc3b14 EB	252	.procname = "addip_noauth_enable",
e1fc3b14 EB	253	.data = &init_net.sctp.addip_noauth,
d48e074d	254	.maxlen = sizeof(int),
2f85a429	255	.mode = 0644,
6d9f239a	256	.proc_handler = proc_dointvec,
4d93df0a NH	257	},
4d93df0a NH	258	{
e1fc3b14 EB	259	.procname = "prsctp_enable",
e1fc3b14 EB	260	.data = &init_net.sctp.prsctp_enable,
a29a5bd4 VY	261	.maxlen = sizeof(int),
a29a5bd4 VY	262	.mode = 0644,
6d9f239a	263	.proc_handler = proc_dointvec,
a29a5bd4	264	},
73d9c4fd	265	{
e1fc3b14 EB	266	.procname = "auth_enable",
e1fc3b14 EB	267	.data = &init_net.sctp.auth_enable,
73d9c4fd VY	268	.maxlen = sizeof(int),
73d9c4fd VY	269	.mode = 0644,
6d9f239a	270	.proc_handler = proc_dointvec,
73d9c4fd	271	},
72388433	272	{
72388433	273	.procname = "addr_scope_policy",
e1fc3b14	274	.data = &init_net.sctp.scope_policy,
72388433 BD	275	.maxlen = sizeof(int),
72388433 BD	276	.mode = 0644,
6d456111	277	.proc_handler = proc_dointvec_minmax,
72388433 BD	278	.extra1 = &zero,
	279	.extra2 = &addr_scope_max,
	280	},
90f2f531	281	{
90f2f531	282	.procname = "rwnd_update_shift",
e1fc3b14	283	.data = &init_net.sctp.rwnd_upd_shift,
90f2f531 VY	284	.maxlen = sizeof(int),
	285	.mode = 0644,
	286	.proc_handler = &proc_dointvec_minmax,
90f2f531 VY	287	.extra1 = &one,
	288	.extra2 = &rwnd_scale_max,
	289	},
2692ba61 XW	290	{
2692ba61 XW	291	.procname = "max_autoclose",
e1fc3b14	292	.data = &init_net.sctp.max_autoclose,
2692ba61 XW	293	.maxlen = sizeof(unsigned long),
	294	.mode = 0644,
	295	.proc_handler = &proc_doulongvec_minmax,
	296	.extra1 = &max_autoclose_min,
	297	.extra2 = &max_autoclose_max,
	298	},
90f2f531	299
d7fc02c7	300	{ /* sentinel */ }
1da177e4 LT	301	};
1da177e4 LT	302
3c68198e NH	303	static int proc_sctp_do_hmac_alg(ctl_table *ctl,
	304	int write,
	305	void __user buffer, size_t lenp,
	306	loff_t *ppos)
	307	{
	308	struct net *net = current->nsproxy->net_ns;
	309	char tmp[8];
	310	ctl_table tbl;
	311	int ret;
	312	int changed = 0;
	313	char *none = "none";
	314
	315	memset(&tbl, 0, sizeof(struct ctl_table));
	316
	317	if (write) {
	318	tbl.data = tmp;
	319	tbl.maxlen = 8;
	320	} else {
	321	tbl.data = net->sctp.sctp_hmac_alg ? : none;
	322	tbl.maxlen = strlen(tbl.data);
	323	}
	324	ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
	325
	326	if (write) {
	327	#ifdef CONFIG_CRYPTO_MD5
	328	if (!strncmp(tmp, "md5", 3)) {
	329	net->sctp.sctp_hmac_alg = "md5";
	330	changed = 1;
	331	}
	332	#endif
	333	#ifdef CONFIG_CRYPTO_SHA1
	334	if (!strncmp(tmp, "sha1", 4)) {
	335	net->sctp.sctp_hmac_alg = "sha1";
	336	changed = 1;
	337	}
	338	#endif
	339	if (!strncmp(tmp, "none", 4)) {
	340	net->sctp.sctp_hmac_alg = NULL;
	341	changed = 1;
	342	}
	343
	344	if (!changed)
	345	ret = -EINVAL;
	346	}
	347
	348	return ret;
	349	}
	350
ebb7e95d EB	351	int sctp_sysctl_net_register(struct net *net)
	352	{
	353	struct ctl_table *table;
e1fc3b14	354	int i;
ebb7e95d EB	355
	356	table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
	357	if (!table)
	358	return -ENOMEM;
	359
e1fc3b14 EB	360	for (i = 0; table[i].data; i++)
	361	table[i].data += (char )(&net->sctp) - (char )&init_net.sctp;
	362
ebb7e95d EB	363	net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
	364	return 0;
	365	}
	366
	367	void sctp_sysctl_net_unregister(struct net *net)
	368	{
5f19d121 VY	369	struct ctl_table *table;
	370
	371	table = net->sctp.sysctl_header->ctl_table_arg;
ebb7e95d	372	unregister_net_sysctl_table(net->sctp.sysctl_header);
5f19d121	373	kfree(table);
ebb7e95d EB	374	}
ebb7e95d EB	375
1da177e4 LT	376	static struct ctl_table_header * sctp_sysctl_header;
	377
	378	/* Sysctl registration. */
	379	void sctp_sysctl_register(void)
	380	{
ec8f23ce	381	sctp_sysctl_header = register_net_sysctl(&init_net, "net/sctp", sctp_table);
1da177e4 LT	382	}
	383
	384	/* Sysctl deregistration. */
	385	void sctp_sysctl_unregister(void)
	386	{
5dd3df10	387	unregister_net_sysctl_table(sctp_sysctl_header);
1da177e4	388	}