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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
607ca46e DH |
2 | /*************************************************************************** |
3 | * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661) | |
4 | * | |
5 | * This file supplies definitions required by the PPP over L2TP driver | |
6 | * (l2tp_ppp.c). All version information wrt this file is located in l2tp_ppp.c | |
7 | * | |
8 | * License: | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * as published by the Free Software Foundation; either version | |
12 | * 2 of the License, or (at your option) any later version. | |
13 | * | |
14 | */ | |
15 | ||
16 | #ifndef _UAPI__LINUX_IF_PPPOL2TP_H | |
17 | #define _UAPI__LINUX_IF_PPPOL2TP_H | |
18 | ||
19 | #include <linux/types.h> | |
05ee5de7 MR |
20 | #include <linux/in.h> |
21 | #include <linux/in6.h> | |
47c3e778 | 22 | #include <linux/l2tp.h> |
607ca46e DH |
23 | |
24 | /* Structure used to connect() the socket to a particular tunnel UDP | |
25 | * socket over IPv4. | |
26 | */ | |
27 | struct pppol2tp_addr { | |
28 | __kernel_pid_t pid; /* pid that owns the fd. | |
29 | * 0 => current */ | |
30 | int fd; /* FD of UDP socket to use */ | |
31 | ||
32 | struct sockaddr_in addr; /* IP address and port to send to */ | |
33 | ||
34 | __u16 s_tunnel, s_session; /* For matching incoming packets */ | |
35 | __u16 d_tunnel, d_session; /* For sending outgoing packets */ | |
36 | }; | |
37 | ||
38 | /* Structure used to connect() the socket to a particular tunnel UDP | |
39 | * socket over IPv6. | |
40 | */ | |
41 | struct pppol2tpin6_addr { | |
42 | __kernel_pid_t pid; /* pid that owns the fd. | |
43 | * 0 => current */ | |
44 | int fd; /* FD of UDP socket to use */ | |
45 | ||
46 | __u16 s_tunnel, s_session; /* For matching incoming packets */ | |
47 | __u16 d_tunnel, d_session; /* For sending outgoing packets */ | |
48 | ||
49 | struct sockaddr_in6 addr; /* IP address and port to send to */ | |
50 | }; | |
51 | ||
52 | /* The L2TPv3 protocol changes tunnel and session ids from 16 to 32 | |
53 | * bits. So we need a different sockaddr structure. | |
54 | */ | |
55 | struct pppol2tpv3_addr { | |
56 | __kernel_pid_t pid; /* pid that owns the fd. | |
57 | * 0 => current */ | |
58 | int fd; /* FD of UDP or IP socket to use */ | |
59 | ||
60 | struct sockaddr_in addr; /* IP address and port to send to */ | |
61 | ||
62 | __u32 s_tunnel, s_session; /* For matching incoming packets */ | |
63 | __u32 d_tunnel, d_session; /* For sending outgoing packets */ | |
64 | }; | |
65 | ||
66 | struct pppol2tpv3in6_addr { | |
67 | __kernel_pid_t pid; /* pid that owns the fd. | |
68 | * 0 => current */ | |
69 | int fd; /* FD of UDP or IP socket to use */ | |
70 | ||
71 | __u32 s_tunnel, s_session; /* For matching incoming packets */ | |
72 | __u32 d_tunnel, d_session; /* For sending outgoing packets */ | |
73 | ||
74 | struct sockaddr_in6 addr; /* IP address and port to send to */ | |
75 | }; | |
76 | ||
77 | /* Socket options: | |
78 | * DEBUG - bitmask of debug message categories | |
79 | * SENDSEQ - 0 => don't send packets with sequence numbers | |
80 | * 1 => send packets with sequence numbers | |
81 | * RECVSEQ - 0 => receive packet sequence numbers are optional | |
82 | * 1 => drop receive packets without sequence numbers | |
83 | * LNSMODE - 0 => act as LAC. | |
84 | * 1 => act as LNS. | |
85 | * REORDERTO - reorder timeout (in millisecs). If 0, don't try to reorder. | |
86 | */ | |
87 | enum { | |
88 | PPPOL2TP_SO_DEBUG = 1, | |
89 | PPPOL2TP_SO_RECVSEQ = 2, | |
90 | PPPOL2TP_SO_SENDSEQ = 3, | |
91 | PPPOL2TP_SO_LNSMODE = 4, | |
92 | PPPOL2TP_SO_REORDERTO = 5, | |
93 | }; | |
94 | ||
47c3e778 | 95 | /* Debug message categories for the DEBUG socket option (deprecated) */ |
607ca46e | 96 | enum { |
47c3e778 AST |
97 | PPPOL2TP_MSG_DEBUG = L2TP_MSG_DEBUG, |
98 | PPPOL2TP_MSG_CONTROL = L2TP_MSG_CONTROL, | |
99 | PPPOL2TP_MSG_SEQ = L2TP_MSG_SEQ, | |
100 | PPPOL2TP_MSG_DATA = L2TP_MSG_DATA, | |
607ca46e DH |
101 | }; |
102 | ||
103 | ||
104 | ||
105 | #endif /* _UAPI__LINUX_IF_PPPOL2TP_H */ |