[XFRM] POLICY: Support netlink socket interface for sub policy.

Sub policy can be used through netlink socket.
PF_KEY uses main only and it is TODO to support sub.

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index 492fb9818747..14ecd19f4cdc 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -230,6 +230,12 @@ enum xfrm_ae_ftype_t {
 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
 };
 
+struct xfrm_userpolicy_type {
+        __u8            type;
+        __u16           reserved1;
+        __u8            reserved2;
+};
+
 /* Netlink message attributes.  */
 enum xfrm_attr_type_t {
         XFRMA_UNSPEC,
@@ -248,6 +254,7 @@ enum xfrm_attr_type_t {
         XFRMA_SRCADDR,          /* xfrm_address_t */
         XFRMA_COADDR,           /* xfrm_address_t */
         XFRMA_LASTUSED,
+        XFRMA_POLICY_TYPE,      /* struct xfrm_userpolicy_type */
         __XFRMA_MAX
 
 #define XFRMA_MAX (__XFRMA_MAX - 1)