1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/sysctl.h>
 3#include <linux/slab.h>
 4#include <net/net_namespace.h>
 5#include <net/xfrm.h>
 6
 7static void __net_init __xfrm_sysctl_init(struct net *net)
 8{
 9	net->xfrm.sysctl_aevent_etime = XFRM_AE_ETIME;
10	net->xfrm.sysctl_aevent_rseqth = XFRM_AE_SEQT_SIZE;
11	net->xfrm.sysctl_larval_drop = 1;
12	net->xfrm.sysctl_acq_expires = 30;
13}
14
15#ifdef CONFIG_SYSCTL
16static struct ctl_table xfrm_table[] = {
17	{
18		.procname	= "xfrm_aevent_etime",
19		.maxlen		= sizeof(u32),
20		.mode		= 0644,
21		.proc_handler	= proc_douintvec
22	},
23	{
24		.procname	= "xfrm_aevent_rseqth",
25		.maxlen		= sizeof(u32),
26		.mode		= 0644,
27		.proc_handler	= proc_douintvec
28	},
29	{
30		.procname	= "xfrm_larval_drop",
31		.maxlen		= sizeof(int),
32		.mode		= 0644,
33		.proc_handler	= proc_dointvec
34	},
35	{
36		.procname	= "xfrm_acq_expires",
37		.maxlen		= sizeof(int),
38		.mode		= 0644,
39		.proc_handler	= proc_dointvec
40	},
 
41};
42
43int __net_init xfrm_sysctl_init(struct net *net)
44{
45	struct ctl_table *table;
46	size_t table_size = ARRAY_SIZE(xfrm_table);
47
48	__xfrm_sysctl_init(net);
49
50	table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL);
51	if (!table)
52		goto out_kmemdup;
53	table[0].data = &net->xfrm.sysctl_aevent_etime;
54	table[1].data = &net->xfrm.sysctl_aevent_rseqth;
55	table[2].data = &net->xfrm.sysctl_larval_drop;
56	table[3].data = &net->xfrm.sysctl_acq_expires;
57
58	/* Don't export sysctls to unprivileged users */
59	if (net->user_ns != &init_user_ns)
60		table_size = 0;
61
62	net->xfrm.sysctl_hdr = register_net_sysctl_sz(net, "net/core", table,
63						      table_size);
64	if (!net->xfrm.sysctl_hdr)
65		goto out_register;
66	return 0;
67
68out_register:
69	kfree(table);
70out_kmemdup:
71	return -ENOMEM;
72}
73
74void __net_exit xfrm_sysctl_fini(struct net *net)
75{
76	const struct ctl_table *table;
77
78	table = net->xfrm.sysctl_hdr->ctl_table_arg;
79	unregister_net_sysctl_table(net->xfrm.sysctl_hdr);
80	kfree(table);
81}
82#else
83int __net_init xfrm_sysctl_init(struct net *net)
84{
85	__xfrm_sysctl_init(net);
86	return 0;
87}
88#endif

 1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/sysctl.h>
 3#include <linux/slab.h>
 4#include <net/net_namespace.h>
 5#include <net/xfrm.h>
 6
 7static void __net_init __xfrm_sysctl_init(struct net *net)
 8{
 9	net->xfrm.sysctl_aevent_etime = XFRM_AE_ETIME;
10	net->xfrm.sysctl_aevent_rseqth = XFRM_AE_SEQT_SIZE;
11	net->xfrm.sysctl_larval_drop = 1;
12	net->xfrm.sysctl_acq_expires = 30;
13}
14
15#ifdef CONFIG_SYSCTL
16static struct ctl_table xfrm_table[] = {
17	{
18		.procname	= "xfrm_aevent_etime",
19		.maxlen		= sizeof(u32),
20		.mode		= 0644,
21		.proc_handler	= proc_douintvec
22	},
23	{
24		.procname	= "xfrm_aevent_rseqth",
25		.maxlen		= sizeof(u32),
26		.mode		= 0644,
27		.proc_handler	= proc_douintvec
28	},
29	{
30		.procname	= "xfrm_larval_drop",
31		.maxlen		= sizeof(int),
32		.mode		= 0644,
33		.proc_handler	= proc_dointvec
34	},
35	{
36		.procname	= "xfrm_acq_expires",
37		.maxlen		= sizeof(int),
38		.mode		= 0644,
39		.proc_handler	= proc_dointvec
40	},
41	{}
42};
43
44int __net_init xfrm_sysctl_init(struct net *net)
45{
46	struct ctl_table *table;
 
47
48	__xfrm_sysctl_init(net);
49
50	table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL);
51	if (!table)
52		goto out_kmemdup;
53	table[0].data = &net->xfrm.sysctl_aevent_etime;
54	table[1].data = &net->xfrm.sysctl_aevent_rseqth;
55	table[2].data = &net->xfrm.sysctl_larval_drop;
56	table[3].data = &net->xfrm.sysctl_acq_expires;
57
58	/* Don't export sysctls to unprivileged users */
59	if (net->user_ns != &init_user_ns)
60		table[0].procname = NULL;
61
62	net->xfrm.sysctl_hdr = register_net_sysctl(net, "net/core", table);
 
63	if (!net->xfrm.sysctl_hdr)
64		goto out_register;
65	return 0;
66
67out_register:
68	kfree(table);
69out_kmemdup:
70	return -ENOMEM;
71}
72
73void __net_exit xfrm_sysctl_fini(struct net *net)
74{
75	struct ctl_table *table;
76
77	table = net->xfrm.sysctl_hdr->ctl_table_arg;
78	unregister_net_sysctl_table(net->xfrm.sysctl_hdr);
79	kfree(table);
80}
81#else
82int __net_init xfrm_sysctl_init(struct net *net)
83{
84	__xfrm_sysctl_init(net);
85	return 0;
86}
87#endif