[XFRM] STATE: Introduce care-of address.

Care-of address is carried by state as a transformation option like
IPsec encryption/authentication algorithm.

Based on MIPL2 kernel patch.

Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp>
Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

2 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index a7c9e4cfb15b..b53f799189af 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -235,6 +235,7 @@ enum xfrm_attr_type_t {
         XFRMA_REPLAY_THRESH,
         XFRMA_ETIMER_THRESH,
         XFRMA_SRCADDR,          /* xfrm_address_t */
+        XFRMA_COADDR,           /* xfrm_address_t */
         __XFRMA_MAX
 
 #define XFRMA_MAX (__XFRMA_MAX - 1)
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index aa93cc1f6299..872a2a4022b2 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -134,6 +134,9 @@ struct xfrm_state
         /* Data for encapsulator */
         struct xfrm_encap_tmpl  *encap;
 
+        /* Data for care-of address */
+        xfrm_address_t  *coaddr;
+
         /* IPComp needs an IPIP tunnel for handling uncompressed packets */
         struct xfrm_state       *tunnel;