xfrm: Const'ify policy arg to xp_net.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 1806c91..5402a1e 100644 (file)
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -506,7 +506,7 @@ struct xfrm_policy {
        struct xfrm_tmpl        xfrm_vec[XFRM_MAX_DEPTH];
 };
 
-static inline struct net *xp_net(struct xfrm_policy *xp)
+static inline struct net *xp_net(const struct xfrm_policy *xp)
 {
        return read_pnet(&xp->xp_net);
 }