#include <net/mip6.h>
#endif
-static struct dst_ops xfrm6_dst_ops;
static struct xfrm_policy_afinfo xfrm6_policy_afinfo;
static struct dst_entry *xfrm6_dst_lookup(struct net *net, int tos,
static inline int xfrm6_garbage_collect(struct dst_ops *ops)
{
- xfrm6_policy_afinfo.garbage_collect(&init_net);
- return (atomic_read(&xfrm6_dst_ops.entries) > xfrm6_dst_ops.gc_thresh*2);
+ struct net *net = container_of(ops, struct net, xfrm.xfrm6_dst_ops);
+
+ xfrm6_policy_afinfo.garbage_collect(net);
+ return (atomic_read(&ops->entries) > ops->gc_thresh * 2);
}
static void xfrm6_update_pmtu(struct dst_entry *dst, u32 mtu)
xfrm_policy_unregister_afinfo(&xfrm6_policy_afinfo);
}
+#ifdef CONFIG_SYSCTL
+static struct ctl_table xfrm6_policy_table[] = {
+ {
+ .procname = "xfrm6_gc_thresh",
+ .data = &init_net.xfrm.xfrm6_dst_ops.gc_thresh,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ { }
+};
+
+static struct ctl_table_header *sysctl_hdr;
+#endif
+
int __init xfrm6_init(void)
{
int ret;
+ unsigned int gc_thresh;
+
+ /*
+ * We need a good default value for the xfrm6 gc threshold.
+ * In ipv4 we set it to the route hash table size * 8, which
+ * is half the size of the maximaum route cache for ipv4. It
+ * would be good to do the same thing for v6, except the table is
+ * constructed differently here. Here each table for a net namespace
+ * can have FIB_TABLE_HASHSZ entries, so lets go with the same
+ * computation that we used for ipv4 here. Also, lets keep the initial
+ * gc_thresh to a minimum of 1024, since, the ipv6 route cache defaults
+ * to that as a minimum as well
+ */
+ gc_thresh = FIB6_TABLE_HASHSZ * 8;
+ xfrm6_dst_ops.gc_thresh = (gc_thresh < 1024) ? 1024 : gc_thresh;
ret = xfrm6_policy_init();
if (ret)
ret = xfrm6_state_init();
if (ret)
goto out_policy;
+
+#ifdef CONFIG_SYSCTL
+ sysctl_hdr = register_net_sysctl_table(&init_net, net_ipv6_ctl_path,
+ xfrm6_policy_table);
+#endif
out:
return ret;
out_policy:
void xfrm6_fini(void)
{
+#ifdef CONFIG_SYSCTL
+ if (sysctl_hdr)
+ unregister_net_sysctl_table(sysctl_hdr);
+#endif
//xfrm6_input_fini();
xfrm6_policy_fini();
xfrm6_state_fini();