1 /***************************************************************************
2 * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661)
4 * This file supplies definitions required by the PPP over L2TP driver
5 * (pppol2tp.c). All version information wrt this file is located in pppol2tp.c
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
15 #ifndef __LINUX_IF_PPPOL2TP_H
16 #define __LINUX_IF_PPPOL2TP_H
18 #include <linux/types.h>
24 /* Structure used to connect() the socket to a particular tunnel UDP
27 struct pppol2tp_addr {
28 __kernel_pid_t pid; /* pid that owns the fd.
30 int fd; /* FD of UDP socket to use */
32 struct sockaddr_in addr; /* IP address and port to send to */
34 __u16 s_tunnel, s_session; /* For matching incoming packets */
35 __u16 d_tunnel, d_session; /* For sending outgoing packets */
39 * DEBUG - bitmask of debug message categories
40 * SENDSEQ - 0 => don't send packets with sequence numbers
41 * 1 => send packets with sequence numbers
42 * RECVSEQ - 0 => receive packet sequence numbers are optional
43 * 1 => drop receive packets without sequence numbers
44 * LNSMODE - 0 => act as LAC.
46 * REORDERTO - reorder timeout (in millisecs). If 0, don't try to reorder.
49 PPPOL2TP_SO_DEBUG = 1,
50 PPPOL2TP_SO_RECVSEQ = 2,
51 PPPOL2TP_SO_SENDSEQ = 3,
52 PPPOL2TP_SO_LNSMODE = 4,
53 PPPOL2TP_SO_REORDERTO = 5,
56 /* Debug message categories for the DEBUG socket option */
58 PPPOL2TP_MSG_DEBUG = (1 << 0), /* verbose debug (if
60 PPPOL2TP_MSG_CONTROL = (1 << 1), /* userspace - kernel
62 PPPOL2TP_MSG_SEQ = (1 << 2), /* sequence numbers */
63 PPPOL2TP_MSG_DATA = (1 << 3), /* data packets */