net/ipv4: VTI support new module for ip_vti.

New VTI tunnel kernel module, Kconfig and Makefile changes.

Signed-off-by: Saurabh Mohan <saurabh.mohan@vyatta.com>
Reviewed-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 0 deletions

diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 20f1cb5c8aba..5a19aeb86094 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -310,6 +310,17 @@ config SYN_COOKIES
 
           If unsure, say N.
 
+config NET_IPVTI
+        tristate "Virtual (secure) IP: tunneling"
+        select INET_TUNNEL
+        depends on INET_XFRM_MODE_TUNNEL
+        ---help---
+          Tunneling means encapsulating data of one protocol type within
+          another protocol and sending it over a channel that understands the
+          encapsulating protocol. This can be used with xfrm mode tunnel to give
+          the notion of a secure tunnel for IPSEC and then use routing protocol
+          on top.
+
 config INET_AH
         tristate "IP: AH transformation"
         select XFRM_ALGO