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- PPPoL2TP plugin
- ===============
- The pppol2tp plugin lets pppd use the Linux kernel driver pppol2tp.ko
- to pass PPP frames in L2TP tunnels. The driver was integrated into the
- kernel in the 2.6.23 release. For kernels before 2.6.23, an
- out-of-tree kernel module is available from the pppol2tp-kmod package
- in the OpenL2TP project.
- Note that pppd receives only PPP control frames over the PPPoL2TP
- socket; data frames are handled entirely by the kernel.
- The pppol2tp plugin adds extra arguments to pppd and uses the Linux kernel
- PPP-over-L2TP driver to set up each session's data path.
- Arguments are:-
- pppol2tp <fd> - FD for PPPoL2TP socket
- pppol2tp_lns_mode - PPPoL2TP LNS behavior. Default off.
- pppol2tp_send_seq - PPPoL2TP enable sequence numbers in
- transmitted data packets. Default off.
- pppol2tp_recv_seq - PPPoL2TP enforce sequence numbers in
- received data packets. Default off.
- pppol2tp_reorderto <millisecs> - PPPoL2TP data packet reorder timeout.
- Default 0 (no reordering).
- pppol2tp_debug_mask <mask> - PPPoL2TP debug mask. Bitwise OR of
- 1 - verbose debug
- 2 - control
- 4 - kernel transport
- 8 - ppp packet data
- Default: 0 (no debug).
- pppol2tp_ifname <ifname> - Name of PPP network interface visible
- to "ifconfig" and "ip link".
- Default: "pppN"
- pppol2tp_tunnel_id <id> - L2TP tunnel_id tunneling this PPP
- session.
- pppol2tp_session_id <id> - L2TP session_id of this PPP session.
- The tunnel_id/session_id pair is used
- when sending event messages to openl2tpd.
- pppd will typically be started by an L2TP daemon for each L2TP sesion,
- supplying one or more of the above arguments as required. The pppd
- user will usually have no visibility of these arguments.
- Two hooks are exported by this plugin.
- void (*pppol2tp_send_accm_hook)(int tunnel_id, int session_id,
- uint32_t send_accm, uint32_t recv_accm);
- void (*pppol2tp_ip_updown_hook)(int tunnel_id, int session_id, int up);
- Credits
- =======
- This plugin was developed by Katalix Systems as part of the OpenL2TP
- project, http://openl2tp.sourceforge.net. OpenL2TP is a full-featured
- L2TP client-server, suitable for use as an enterprise L2TP VPN server
- or a VPN client.
- Please copy problems to the OpenL2TP mailing list:
- openl2tp-users@lists.sourceforge.net.
- Maintained by:
- James Chapman
- jchapman@katalix.com
- Katalix Systems Ltd
- http://www.katalix.com
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