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>
20 #include <linux/in6.h>
21 #include <linux/l2tp.h>
23 /* Structure used to connect() the socket to a particular tunnel UDP
26 struct pppol2tp_addr {
27 __kernel_pid_t pid; /* pid that owns the fd.
29 int fd; /* FD of UDP socket to use */
31 struct sockaddr_in addr; /* IP address and port to send to */
33 __u16 s_tunnel, s_session; /* For matching incoming packets */
34 __u16 d_tunnel, d_session; /* For sending outgoing packets */
37 /* Structure used to connect() the socket to a particular tunnel UDP
40 struct pppol2tpin6_addr {
41 __kernel_pid_t pid; /* pid that owns the fd.
43 int fd; /* FD of UDP socket to use */
45 __u16 s_tunnel, s_session; /* For matching incoming packets */
46 __u16 d_tunnel, d_session; /* For sending outgoing packets */
48 struct sockaddr_in6 addr; /* IP address and port to send to */
51 /* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
52 * bits. So we need a different sockaddr structure.
54 struct pppol2tpv3_addr {
55 __kernel_pid_t pid; /* pid that owns the fd.
57 int fd; /* FD of UDP or IP socket to use */
59 struct sockaddr_in addr; /* IP address and port to send to */
61 __u32 s_tunnel, s_session; /* For matching incoming packets */
62 __u32 d_tunnel, d_session; /* For sending outgoing packets */
65 struct pppol2tpv3in6_addr {
66 __kernel_pid_t pid; /* pid that owns the fd.
68 int fd; /* FD of UDP or IP socket to use */
70 __u32 s_tunnel, s_session; /* For matching incoming packets */
71 __u32 d_tunnel, d_session; /* For sending outgoing packets */
73 struct sockaddr_in6 addr; /* IP address and port to send to */
77 * DEBUG - bitmask of debug message categories
78 * SENDSEQ - 0 => don't send packets with sequence numbers
79 * 1 => send packets with sequence numbers
80 * RECVSEQ - 0 => receive packet sequence numbers are optional
81 * 1 => drop receive packets without sequence numbers
82 * LNSMODE - 0 => act as LAC.
84 * REORDERTO - reorder timeout (in millisecs). If 0, don't try to reorder.
87 PPPOL2TP_SO_DEBUG = 1,
88 PPPOL2TP_SO_RECVSEQ = 2,
89 PPPOL2TP_SO_SENDSEQ = 3,
90 PPPOL2TP_SO_LNSMODE = 4,
91 PPPOL2TP_SO_REORDERTO = 5,
94 /* Debug message categories for the DEBUG socket option (deprecated) */
96 PPPOL2TP_MSG_DEBUG = L2TP_MSG_DEBUG,
97 PPPOL2TP_MSG_CONTROL = L2TP_MSG_CONTROL,
98 PPPOL2TP_MSG_SEQ = L2TP_MSG_SEQ,
99 PPPOL2TP_MSG_DATA = L2TP_MSG_DATA,
104 #endif /* _UAPI__LINUX_IF_PPPOL2TP_H */