1 /***************************************************************************
2 * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661)
4 * This file supplies definitions required by the PPP over L2TP driver
5 * (l2tp_ppp.c). All version information wrt this file is located in l2tp_ppp.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 _UAPI__LINUX_IF_PPPOL2TP_H
16 #define _UAPI__LINUX_IF_PPPOL2TP_H
18 #include <linux/types.h>
21 /* Structure used to connect() the socket to a particular tunnel UDP
24 struct pppol2tp_addr {
25 __kernel_pid_t pid; /* pid that owns the fd.
27 int fd; /* FD of UDP socket to use */
29 struct sockaddr_in addr; /* IP address and port to send to */
31 __u16 s_tunnel, s_session; /* For matching incoming packets */
32 __u16 d_tunnel, d_session; /* For sending outgoing packets */
35 /* Structure used to connect() the socket to a particular tunnel UDP
38 struct pppol2tpin6_addr {
39 __kernel_pid_t pid; /* pid that owns the fd.
41 int fd; /* FD of UDP socket to use */
43 __u16 s_tunnel, s_session; /* For matching incoming packets */
44 __u16 d_tunnel, d_session; /* For sending outgoing packets */
46 struct sockaddr_in6 addr; /* IP address and port to send to */
49 /* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
50 * bits. So we need a different sockaddr structure.
52 struct pppol2tpv3_addr {
53 __kernel_pid_t pid; /* pid that owns the fd.
55 int fd; /* FD of UDP or IP socket to use */
57 struct sockaddr_in addr; /* IP address and port to send to */
59 __u32 s_tunnel, s_session; /* For matching incoming packets */
60 __u32 d_tunnel, d_session; /* For sending outgoing packets */
63 struct pppol2tpv3in6_addr {
64 __kernel_pid_t pid; /* pid that owns the fd.
66 int fd; /* FD of UDP or IP socket to use */
68 __u32 s_tunnel, s_session; /* For matching incoming packets */
69 __u32 d_tunnel, d_session; /* For sending outgoing packets */
71 struct sockaddr_in6 addr; /* IP address and port to send to */
75 * DEBUG - bitmask of debug message categories
76 * SENDSEQ - 0 => don't send packets with sequence numbers
77 * 1 => send packets with sequence numbers
78 * RECVSEQ - 0 => receive packet sequence numbers are optional
79 * 1 => drop receive packets without sequence numbers
80 * LNSMODE - 0 => act as LAC.
82 * REORDERTO - reorder timeout (in millisecs). If 0, don't try to reorder.
85 PPPOL2TP_SO_DEBUG = 1,
86 PPPOL2TP_SO_RECVSEQ = 2,
87 PPPOL2TP_SO_SENDSEQ = 3,
88 PPPOL2TP_SO_LNSMODE = 4,
89 PPPOL2TP_SO_REORDERTO = 5,
92 /* Debug message categories for the DEBUG socket option */
94 PPPOL2TP_MSG_DEBUG = (1 << 0), /* verbose debug (if
96 PPPOL2TP_MSG_CONTROL = (1 << 1), /* userspace - kernel
98 PPPOL2TP_MSG_SEQ = (1 << 2), /* sequence numbers */
99 PPPOL2TP_MSG_DATA = (1 << 3), /* data packets */
104 #endif /* _UAPI__LINUX_IF_PPPOL2TP_H */