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// SPDX-License-Identifier: GPL-2.0
#include <linux/sysctl.h>
#include <linux/slab.h>
#include <net/net_namespace.h>
#include <net/xfrm.h>
static void __net_init __xfrm_sysctl_init(struct net *net)
{
net->xfrm.sysctl_aevent_etime = XFRM_AE_ETIME;
net->xfrm.sysctl_aevent_rseqth = XFRM_AE_SEQT_SIZE;
net->xfrm.sysctl_larval_drop = 1;
net->xfrm.sysctl_acq_expires = 30;
}
#ifdef CONFIG_SYSCTL
static struct ctl_table xfrm_table[] = {
{
.procname = "xfrm_aevent_etime",
.maxlen = sizeof(u32),
.mode = 0644,
.proc_handler = proc_douintvec
},
{
.procname = "xfrm_aevent_rseqth",
.maxlen = sizeof(u32),
.mode = 0644,
.proc_handler = proc_douintvec
},
{
.procname = "xfrm_larval_drop",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "xfrm_acq_expires",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
};
int __net_init xfrm_sysctl_init(struct net *net)
{
struct ctl_table *table;
size_t table_size = ARRAY_SIZE(xfrm_table);
__xfrm_sysctl_init(net);
table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL);
if (!table)
goto out_kmemdup;
table[0].data = &net->xfrm.sysctl_aevent_etime;
table[1].data = &net->xfrm.sysctl_aevent_rseqth;
table[2].data = &net->xfrm.sysctl_larval_drop;
table[3].data = &net->xfrm.sysctl_acq_expires;
/* Don't export sysctls to unprivileged users */
if (net->user_ns != &init_user_ns)
table_size = 0;
net->xfrm.sysctl_hdr = register_net_sysctl_sz(net, "net/core", table,
table_size);
if (!net->xfrm.sysctl_hdr)
goto out_register;
return 0;
out_register:
kfree(table);
out_kmemdup:
return -ENOMEM;
}
void __net_exit xfrm_sysctl_fini(struct net *net)
{
const struct ctl_table *table;
table = net->xfrm.sysctl_hdr->ctl_table_arg;
unregister_net_sysctl_table(net->xfrm.sysctl_hdr);
kfree(table);
}
#else
int __net_init xfrm_sysctl_init(struct net *net)
{
__xfrm_sysctl_init(net);
return 0;
}
#endif
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