1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/sysctl.h>
3 #include <linux/slab.h>
4 #include <net/net_namespace.h>
7 static void __net_init __xfrm_sysctl_init(struct net *net)
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;
16 static struct ctl_table xfrm_table[] = {
18 .procname = "xfrm_aevent_etime",
19 .maxlen = sizeof(u32),
21 .proc_handler = proc_douintvec
24 .procname = "xfrm_aevent_rseqth",
25 .maxlen = sizeof(u32),
27 .proc_handler = proc_douintvec
30 .procname = "xfrm_larval_drop",
31 .maxlen = sizeof(int),
33 .proc_handler = proc_dointvec
36 .procname = "xfrm_acq_expires",
37 .maxlen = sizeof(int),
39 .proc_handler = proc_dointvec
44 int __net_init xfrm_sysctl_init(struct net *net)
46 struct ctl_table *table;
48 __xfrm_sysctl_init(net);
50 table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL);
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;
58 /* Don't export sysctls to unprivileged users */
59 if (net->user_ns != &init_user_ns)
60 table[0].procname = NULL;
62 net->xfrm.sysctl_hdr = register_net_sysctl(net, "net/core", table);
63 if (!net->xfrm.sysctl_hdr)
73 void __net_exit xfrm_sysctl_fini(struct net *net)
75 struct ctl_table *table;
77 table = net->xfrm.sysctl_hdr->ctl_table_arg;
78 unregister_net_sysctl_table(net->xfrm.sysctl_hdr);
82 int __net_init xfrm_sysctl_init(struct net *net)
84 __xfrm_sysctl_init(net);