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cf14a4d0 JC |
1 | /*************************************************************************** |
2 | * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661) | |
3 | * | |
4 | * This file supplies definitions required by the PPP over L2TP driver | |
fd558d18 | 5 | * (l2tp_ppp.c). All version information wrt this file is located in l2tp_ppp.c |
cf14a4d0 JC |
6 | * |
7 | * License: | |
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. | |
12 | * | |
13 | */ | |
14 | ||
15 | #ifndef __LINUX_IF_PPPOL2TP_H | |
16 | #define __LINUX_IF_PPPOL2TP_H | |
17 | ||
00bfddaf | 18 | #include <linux/types.h> |
cf14a4d0 JC |
19 | |
20 | #ifdef __KERNEL__ | |
21 | #include <linux/in.h> | |
d2cf3361 | 22 | #include <linux/in6.h> |
cf14a4d0 JC |
23 | #endif |
24 | ||
25 | /* Structure used to connect() the socket to a particular tunnel UDP | |
d2cf3361 | 26 | * socket over IPv4. |
cf14a4d0 | 27 | */ |
d94d9fee | 28 | struct pppol2tp_addr { |
85efde6f | 29 | __kernel_pid_t pid; /* pid that owns the fd. |
cf14a4d0 JC |
30 | * 0 => current */ |
31 | int fd; /* FD of UDP socket to use */ | |
32 | ||
33 | struct sockaddr_in addr; /* IP address and port to send to */ | |
34 | ||
f424bb9e AV |
35 | __u16 s_tunnel, s_session; /* For matching incoming packets */ |
36 | __u16 d_tunnel, d_session; /* For sending outgoing packets */ | |
cf14a4d0 JC |
37 | }; |
38 | ||
d2cf3361 BL |
39 | /* Structure used to connect() the socket to a particular tunnel UDP |
40 | * socket over IPv6. | |
41 | */ | |
42 | struct pppol2tpin6_addr { | |
43 | __kernel_pid_t pid; /* pid that owns the fd. | |
44 | * 0 => current */ | |
45 | int fd; /* FD of UDP socket to use */ | |
46 | ||
47 | __u16 s_tunnel, s_session; /* For matching incoming packets */ | |
48 | __u16 d_tunnel, d_session; /* For sending outgoing packets */ | |
49 | ||
50 | struct sockaddr_in6 addr; /* IP address and port to send to */ | |
51 | }; | |
52 | ||
e0d4435f JC |
53 | /* The L2TPv3 protocol changes tunnel and session ids from 16 to 32 |
54 | * bits. So we need a different sockaddr structure. | |
55 | */ | |
56 | struct pppol2tpv3_addr { | |
d4b172d2 | 57 | __kernel_pid_t pid; /* pid that owns the fd. |
e0d4435f JC |
58 | * 0 => current */ |
59 | int fd; /* FD of UDP or IP socket to use */ | |
60 | ||
61 | struct sockaddr_in addr; /* IP address and port to send to */ | |
62 | ||
63 | __u32 s_tunnel, s_session; /* For matching incoming packets */ | |
64 | __u32 d_tunnel, d_session; /* For sending outgoing packets */ | |
65 | }; | |
66 | ||
d2cf3361 BL |
67 | struct pppol2tpv3in6_addr { |
68 | __kernel_pid_t pid; /* pid that owns the fd. | |
69 | * 0 => current */ | |
70 | int fd; /* FD of UDP or IP socket to use */ | |
71 | ||
72 | __u32 s_tunnel, s_session; /* For matching incoming packets */ | |
73 | __u32 d_tunnel, d_session; /* For sending outgoing packets */ | |
74 | ||
75 | struct sockaddr_in6 addr; /* IP address and port to send to */ | |
76 | }; | |
77 | ||
cf14a4d0 JC |
78 | /* Socket options: |
79 | * DEBUG - bitmask of debug message categories | |
80 | * SENDSEQ - 0 => don't send packets with sequence numbers | |
81 | * 1 => send packets with sequence numbers | |
82 | * RECVSEQ - 0 => receive packet sequence numbers are optional | |
83 | * 1 => drop receive packets without sequence numbers | |
84 | * LNSMODE - 0 => act as LAC. | |
85 | * 1 => act as LNS. | |
86 | * REORDERTO - reorder timeout (in millisecs). If 0, don't try to reorder. | |
87 | */ | |
88 | enum { | |
89 | PPPOL2TP_SO_DEBUG = 1, | |
90 | PPPOL2TP_SO_RECVSEQ = 2, | |
91 | PPPOL2TP_SO_SENDSEQ = 3, | |
92 | PPPOL2TP_SO_LNSMODE = 4, | |
93 | PPPOL2TP_SO_REORDERTO = 5, | |
94 | }; | |
95 | ||
96 | /* Debug message categories for the DEBUG socket option */ | |
97 | enum { | |
98 | PPPOL2TP_MSG_DEBUG = (1 << 0), /* verbose debug (if | |
99 | * compiled in) */ | |
100 | PPPOL2TP_MSG_CONTROL = (1 << 1), /* userspace - kernel | |
101 | * interface */ | |
102 | PPPOL2TP_MSG_SEQ = (1 << 2), /* sequence numbers */ | |
103 | PPPOL2TP_MSG_DATA = (1 << 3), /* data packets */ | |
104 | }; | |
105 | ||
106 | ||
107 | ||
108 | #endif |