Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / xfrm / xfrm_sysctl.c

diff --git a/kernel/net/xfrm/xfrm_sysctl.c b/kernel/net/xfrm/xfrm_sysctl.c
new file mode 100644 (file)
index 0000000..05a6e3d
--- /dev/null
+++ b/kernel/net/xfrm/xfrm_sysctl.c
@@ -0,0 +1,86 @@
+#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_dointvec
+       },
+       {
+               .procname       = "xfrm_aevent_rseqth",
+               .maxlen         = sizeof(u32),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec
+       },
+       {
+               .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;
+
+       __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[0].procname = NULL;
+
+       net->xfrm.sysctl_hdr = register_net_sysctl(net, "net/core", table);
+       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)
+{
+       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