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