netns xfrm: per-netns sysctls
[linux-2.6.git] / net / xfrm / xfrm_sysctl.c
1 #include <linux/sysctl.h>
2 #include <net/net_namespace.h>
3 #include <net/xfrm.h>
4
5 static void __xfrm_sysctl_init(struct net *net)
6 {
7         net->xfrm.sysctl_aevent_etime = XFRM_AE_ETIME;
8         net->xfrm.sysctl_aevent_rseqth = XFRM_AE_SEQT_SIZE;
9         net->xfrm.sysctl_larval_drop = 1;
10         net->xfrm.sysctl_acq_expires = 30;
11 }
12
13 #ifdef CONFIG_SYSCTL
14 static struct ctl_table xfrm_table[] = {
15         {
16                 .ctl_name       = NET_CORE_AEVENT_ETIME,
17                 .procname       = "xfrm_aevent_etime",
18                 .maxlen         = sizeof(u32),
19                 .mode           = 0644,
20                 .proc_handler   = proc_dointvec
21         },
22         {
23                 .ctl_name       = NET_CORE_AEVENT_RSEQTH,
24                 .procname       = "xfrm_aevent_rseqth",
25                 .maxlen         = sizeof(u32),
26                 .mode           = 0644,
27                 .proc_handler   = proc_dointvec
28         },
29         {
30                 .ctl_name       = CTL_UNNUMBERED,
31                 .procname       = "xfrm_larval_drop",
32                 .maxlen         = sizeof(int),
33                 .mode           = 0644,
34                 .proc_handler   = proc_dointvec
35         },
36         {
37                 .ctl_name       = CTL_UNNUMBERED,
38                 .procname       = "xfrm_acq_expires",
39                 .maxlen         = sizeof(int),
40                 .mode           = 0644,
41                 .proc_handler   = proc_dointvec
42         },
43         {}
44 };
45
46 int __net_init xfrm_sysctl_init(struct net *net)
47 {
48         struct ctl_table *table;
49
50         __xfrm_sysctl_init(net);
51
52         table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL);
53         if (!table)
54                 goto out_kmemdup;
55         table[0].data = &net->xfrm.sysctl_aevent_etime;
56         table[1].data = &net->xfrm.sysctl_aevent_rseqth;
57         table[2].data = &net->xfrm.sysctl_larval_drop;
58         table[3].data = &net->xfrm.sysctl_acq_expires;
59
60         net->xfrm.sysctl_hdr = register_net_sysctl_table(net, net_core_path, table);
61         if (!net->xfrm.sysctl_hdr)
62                 goto out_register;
63         return 0;
64
65 out_register:
66         kfree(table);
67 out_kmemdup:
68         return -ENOMEM;
69 }
70
71 void xfrm_sysctl_fini(struct net *net)
72 {
73         struct ctl_table *table;
74
75         table = net->xfrm.sysctl_hdr->ctl_table_arg;
76         unregister_net_sysctl_table(net->xfrm.sysctl_hdr);
77         kfree(table);
78 }
79 #else
80 int __net_init xfrm_sysctl_init(struct net *net)
81 {
82         __xfrm_sysctl_init(net);
83         return 0;
84 }
85 #endif