netns xfrm: add struct xfrm_state::xs_net
To avoid unnecessary complications with passing netns around.
* set once, very early after allocating
* once set, never changes
For a while create every xfrm_state in init_net.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 9107d6f..9da8903 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -130,6 +130,9 @@
/* Full description of state of transformer. */
struct xfrm_state
{
+#ifdef CONFIG_NET_NS
+ struct net *xs_net;
+#endif
union {
struct hlist_node gclist;
struct hlist_node bydst;
@@ -223,6 +226,11 @@
void *data;
};
+static inline struct net *xs_net(struct xfrm_state *x)
+{
+ return read_pnet(&x->xs_net);
+}
+
/* xflags - make enum if more show up */
#define XFRM_TIME_DEFER 1
@@ -1296,7 +1304,7 @@
extern int xfrm_state_walk(struct xfrm_state_walk *walk,
int (*func)(struct xfrm_state *, int, void*), void *);
extern void xfrm_state_walk_done(struct xfrm_state_walk *walk);
-extern struct xfrm_state *xfrm_state_alloc(void);
+extern struct xfrm_state *xfrm_state_alloc(struct net *net);
extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
struct flowi *fl, struct xfrm_tmpl *tmpl,
struct xfrm_policy *pol, int *err,