[XFRM]: CONFIG_XFRM_MIGRATE option

Add CONFIG_XFRM_MIGRATE option which makes it possible for for user
application to send or receive MIGRATE message to/from netlink socket.

Signed-off-by: Shinta Sugimoto <shinta.sugimoto@ericsson.com>
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, 11 insertions, 0 deletions

diff --git a/net/xfrm/Kconfig b/net/xfrm/Kconfig
index 0faab6332586..d385a7869436 100644
--- a/net/xfrm/Kconfig
+++ b/net/xfrm/Kconfig
@@ -24,6 +24,17 @@ config XFRM_SUB_POLICY
 
           If unsure, say N.
 
+config XFRM_MIGRATE
+        bool "Transformation migrate database (EXPERIMENTAL)"
+        depends on XFRM && EXPERIMENTAL
+        ---help---
+          A feature to update locator(s) of a given IPsec security
+          association dynamically.  This feature is required, for
+          instance, in a Mobile IPv6 environment with IPsec configuration
+          where mobile nodes change their attachment point to the Internet.
+
+          If unsure, say N.
+
 config NET_KEY
         tristate "PF_KEY sockets"
         select XFRM