netns: embed ip6_dst_ops directly
struct net::ipv6.ip6_dst_ops is separatedly dynamically allocated,
but there is no fundamental reason for it. Embed it directly into
struct netns_ipv6.
For that:
* move struct dst_ops into separate header to fix circular dependencies
I honestly tried not to, it's pretty impossible to do other way
* drop dynamical allocation, allocate together with netns
For a change, remove struct dst_ops::dst_net, it's deducible
by using container_of() given dst_ops pointer.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/dst_ops.h b/include/net/dst_ops.h
new file mode 100644
index 0000000..d1ff9b7
--- /dev/null
+++ b/include/net/dst_ops.h
@@ -0,0 +1,28 @@
+#ifndef _NET_DST_OPS_H
+#define _NET_DST_OPS_H
+#include <linux/types.h>
+
+struct dst_entry;
+struct kmem_cachep;
+struct net_device;
+struct sk_buff;
+
+struct dst_ops {
+ unsigned short family;
+ __be16 protocol;
+ unsigned gc_thresh;
+
+ int (*gc)(struct dst_ops *ops);
+ struct dst_entry * (*check)(struct dst_entry *, __u32 cookie);
+ void (*destroy)(struct dst_entry *);
+ void (*ifdown)(struct dst_entry *,
+ struct net_device *dev, int how);
+ struct dst_entry * (*negative_advice)(struct dst_entry *);
+ void (*link_failure)(struct sk_buff *);
+ void (*update_pmtu)(struct dst_entry *dst, u32 mtu);
+ int (*local_out)(struct sk_buff *skb);
+
+ atomic_t entries;
+ struct kmem_cache *kmem_cachep;
+};
+#endif