l2tp: Add L2TPv3 protocol support

[linux-imx.git] / net / l2tp / Kconfig

diff --git a/net/l2tp/Kconfig b/net/l2tp/Kconfig
index ec88c5cdc397208fc1ba37b4c4c5cc695a401dcf..d60758d60478906ab12ca9de1bba2a09e0563292 100644 (file)
--- a/net/l2tp/Kconfig
+++ b/net/l2tp/Kconfig
@@ -19,6 +19,10 @@ menuconfig L2TP
          connections. L2TP is also used as a VPN protocol, popular
          with home workers to connect to their offices.
 
+         L2TPv3 allows other protocols as well as PPP to be carried
+         over L2TP tunnels. L2TPv3 is defined in RFC 3931
+         <http://www.ietf.org/rfc/rfc3931.txt>.
+
          The kernel component handles only L2TP data packets: a
          userland daemon handles L2TP the control protocol (tunnel
          and session setup). One such daemon is OpenL2TP
@@ -26,3 +30,24 @@ menuconfig L2TP
 
          If you don't need L2TP, say N. To compile all L2TP code as
          modules, choose M here.
+
+config L2TP_V3
+       bool "L2TPv3 support (EXPERIMENTAL)"
+       depends on EXPERIMENTAL && L2TP
+       help
+         Layer Two Tunneling Protocol Version 3
+
+         From RFC 3931 <http://www.ietf.org/rfc/rfc3931.txt>.
+
+         The Layer Two Tunneling Protocol (L2TP) provides a dynamic
+         mechanism for tunneling Layer 2 (L2) "circuits" across a
+         packet-oriented data network (e.g., over IP).  L2TP, as
+         originally defined in RFC 2661, is a standard method for
+         tunneling Point-to-Point Protocol (PPP) [RFC1661] sessions.
+         L2TP has since been adopted for tunneling a number of other
+         L2 protocols, including ATM, Frame Relay, HDLC and even raw
+         ethernet frames.
+
+         If you are connecting to L2TPv3 equipment, or you want to
+         tunnel raw ethernet frames using L2TP, say Y here. If
+         unsure, say N.