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607ca46e DH |
1 | /* |
2 | * L2TP-over-IP socket for L2TPv3. | |
3 | * | |
4 | * Author: James Chapman <jchapman@katalix.com> | |
5 | */ | |
6 | ||
7 | #ifndef _UAPI_LINUX_L2TP_H_ | |
8 | #define _UAPI_LINUX_L2TP_H_ | |
9 | ||
10 | #include <linux/types.h> | |
11 | #include <linux/socket.h> | |
a725eb15 DL |
12 | #include <linux/in.h> |
13 | #include <linux/in6.h> | |
607ca46e DH |
14 | |
15 | #define IPPROTO_L2TP 115 | |
16 | ||
17 | /** | |
18 | * struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets | |
19 | * @l2tp_family: address family number AF_L2TPIP. | |
20 | * @l2tp_addr: protocol specific address information | |
21 | * @l2tp_conn_id: connection id of tunnel | |
22 | */ | |
23 | #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ | |
24 | struct sockaddr_l2tpip { | |
25 | /* The first fields must match struct sockaddr_in */ | |
26 | __kernel_sa_family_t l2tp_family; /* AF_INET */ | |
27 | __be16 l2tp_unused; /* INET port number (unused) */ | |
28 | struct in_addr l2tp_addr; /* Internet address */ | |
29 | ||
30 | __u32 l2tp_conn_id; /* Connection ID of tunnel */ | |
31 | ||
32 | /* Pad to size of `struct sockaddr'. */ | |
a725eb15 | 33 | unsigned char __pad[__SOCK_SIZE__ - |
607ca46e DH |
34 | sizeof(__kernel_sa_family_t) - |
35 | sizeof(__be16) - sizeof(struct in_addr) - | |
36 | sizeof(__u32)]; | |
37 | }; | |
38 | ||
39 | /** | |
40 | * struct sockaddr_l2tpip6 - the sockaddr structure for L2TP-over-IPv6 sockets | |
41 | * @l2tp_family: address family number AF_L2TPIP. | |
42 | * @l2tp_addr: protocol specific address information | |
43 | * @l2tp_conn_id: connection id of tunnel | |
44 | */ | |
45 | struct sockaddr_l2tpip6 { | |
46 | /* The first fields must match struct sockaddr_in6 */ | |
47 | __kernel_sa_family_t l2tp_family; /* AF_INET6 */ | |
48 | __be16 l2tp_unused; /* INET port number (unused) */ | |
49 | __be32 l2tp_flowinfo; /* IPv6 flow information */ | |
50 | struct in6_addr l2tp_addr; /* IPv6 address */ | |
51 | __u32 l2tp_scope_id; /* scope id (new in RFC2553) */ | |
52 | __u32 l2tp_conn_id; /* Connection ID of tunnel */ | |
53 | }; | |
54 | ||
55 | /***************************************************************************** | |
56 | * NETLINK_GENERIC netlink family. | |
57 | *****************************************************************************/ | |
58 | ||
59 | /* | |
60 | * Commands. | |
61 | * Valid TLVs of each command are:- | |
62 | * TUNNEL_CREATE - CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum, vlanid | |
63 | * TUNNEL_DELETE - CONN_ID | |
64 | * TUNNEL_MODIFY - CONN_ID, udpcsum | |
65 | * TUNNEL_GETSTATS - CONN_ID, (stats) | |
66 | * TUNNEL_GET - CONN_ID, (...) | |
67 | * SESSION_CREATE - SESSION_ID, PW_TYPE, offset, data_seq, cookie, peer_cookie, offset, l2spec | |
68 | * SESSION_DELETE - SESSION_ID | |
69 | * SESSION_MODIFY - SESSION_ID, data_seq | |
70 | * SESSION_GET - SESSION_ID, (...) | |
71 | * SESSION_GETSTATS - SESSION_ID, (stats) | |
72 | * | |
73 | */ | |
74 | enum { | |
75 | L2TP_CMD_NOOP, | |
76 | L2TP_CMD_TUNNEL_CREATE, | |
77 | L2TP_CMD_TUNNEL_DELETE, | |
78 | L2TP_CMD_TUNNEL_MODIFY, | |
79 | L2TP_CMD_TUNNEL_GET, | |
80 | L2TP_CMD_SESSION_CREATE, | |
81 | L2TP_CMD_SESSION_DELETE, | |
82 | L2TP_CMD_SESSION_MODIFY, | |
83 | L2TP_CMD_SESSION_GET, | |
84 | __L2TP_CMD_MAX, | |
85 | }; | |
86 | ||
87 | #define L2TP_CMD_MAX (__L2TP_CMD_MAX - 1) | |
88 | ||
89 | /* | |
90 | * ATTR types defined for L2TP | |
91 | */ | |
92 | enum { | |
93 | L2TP_ATTR_NONE, /* no data */ | |
94 | L2TP_ATTR_PW_TYPE, /* u16, enum l2tp_pwtype */ | |
95 | L2TP_ATTR_ENCAP_TYPE, /* u16, enum l2tp_encap_type */ | |
96 | L2TP_ATTR_OFFSET, /* u16 */ | |
97 | L2TP_ATTR_DATA_SEQ, /* u16 */ | |
98 | L2TP_ATTR_L2SPEC_TYPE, /* u8, enum l2tp_l2spec_type */ | |
99 | L2TP_ATTR_L2SPEC_LEN, /* u8, enum l2tp_l2spec_type */ | |
100 | L2TP_ATTR_PROTO_VERSION, /* u8 */ | |
101 | L2TP_ATTR_IFNAME, /* string */ | |
102 | L2TP_ATTR_CONN_ID, /* u32 */ | |
103 | L2TP_ATTR_PEER_CONN_ID, /* u32 */ | |
104 | L2TP_ATTR_SESSION_ID, /* u32 */ | |
105 | L2TP_ATTR_PEER_SESSION_ID, /* u32 */ | |
106 | L2TP_ATTR_UDP_CSUM, /* u8 */ | |
107 | L2TP_ATTR_VLAN_ID, /* u16 */ | |
108 | L2TP_ATTR_COOKIE, /* 0, 4 or 8 bytes */ | |
109 | L2TP_ATTR_PEER_COOKIE, /* 0, 4 or 8 bytes */ | |
41c43fbe | 110 | L2TP_ATTR_DEBUG, /* u32, enum l2tp_debug_flags */ |
607ca46e DH |
111 | L2TP_ATTR_RECV_SEQ, /* u8 */ |
112 | L2TP_ATTR_SEND_SEQ, /* u8 */ | |
113 | L2TP_ATTR_LNS_MODE, /* u8 */ | |
114 | L2TP_ATTR_USING_IPSEC, /* u8 */ | |
115 | L2TP_ATTR_RECV_TIMEOUT, /* msec */ | |
116 | L2TP_ATTR_FD, /* int */ | |
117 | L2TP_ATTR_IP_SADDR, /* u32 */ | |
118 | L2TP_ATTR_IP_DADDR, /* u32 */ | |
119 | L2TP_ATTR_UDP_SPORT, /* u16 */ | |
120 | L2TP_ATTR_UDP_DPORT, /* u16 */ | |
121 | L2TP_ATTR_MTU, /* u16 */ | |
122 | L2TP_ATTR_MRU, /* u16 */ | |
123 | L2TP_ATTR_STATS, /* nested */ | |
124 | L2TP_ATTR_IP6_SADDR, /* struct in6_addr */ | |
125 | L2TP_ATTR_IP6_DADDR, /* struct in6_addr */ | |
3f11ec04 AST |
126 | L2TP_ATTR_UDP_ZERO_CSUM6_TX, /* flag */ |
127 | L2TP_ATTR_UDP_ZERO_CSUM6_RX, /* flag */ | |
2175d87c | 128 | L2TP_ATTR_PAD, |
607ca46e DH |
129 | __L2TP_ATTR_MAX, |
130 | }; | |
131 | ||
132 | #define L2TP_ATTR_MAX (__L2TP_ATTR_MAX - 1) | |
133 | ||
134 | /* Nested in L2TP_ATTR_STATS */ | |
135 | enum { | |
136 | L2TP_ATTR_STATS_NONE, /* no data */ | |
137 | L2TP_ATTR_TX_PACKETS, /* u64 */ | |
138 | L2TP_ATTR_TX_BYTES, /* u64 */ | |
139 | L2TP_ATTR_TX_ERRORS, /* u64 */ | |
140 | L2TP_ATTR_RX_PACKETS, /* u64 */ | |
141 | L2TP_ATTR_RX_BYTES, /* u64 */ | |
142 | L2TP_ATTR_RX_SEQ_DISCARDS, /* u64 */ | |
143 | L2TP_ATTR_RX_OOS_PACKETS, /* u64 */ | |
144 | L2TP_ATTR_RX_ERRORS, /* u64 */ | |
1c714a92 | 145 | L2TP_ATTR_STATS_PAD, |
607ca46e DH |
146 | __L2TP_ATTR_STATS_MAX, |
147 | }; | |
148 | ||
149 | #define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1) | |
150 | ||
151 | enum l2tp_pwtype { | |
152 | L2TP_PWTYPE_NONE = 0x0000, | |
153 | L2TP_PWTYPE_ETH_VLAN = 0x0004, | |
154 | L2TP_PWTYPE_ETH = 0x0005, | |
155 | L2TP_PWTYPE_PPP = 0x0007, | |
156 | L2TP_PWTYPE_PPP_AC = 0x0008, | |
157 | L2TP_PWTYPE_IP = 0x000b, | |
158 | __L2TP_PWTYPE_MAX | |
159 | }; | |
160 | ||
161 | enum l2tp_l2spec_type { | |
162 | L2TP_L2SPECTYPE_NONE, | |
163 | L2TP_L2SPECTYPE_DEFAULT, | |
164 | }; | |
165 | ||
166 | enum l2tp_encap_type { | |
167 | L2TP_ENCAPTYPE_UDP, | |
168 | L2TP_ENCAPTYPE_IP, | |
169 | }; | |
170 | ||
171 | enum l2tp_seqmode { | |
172 | L2TP_SEQ_NONE = 0, | |
173 | L2TP_SEQ_IP = 1, | |
174 | L2TP_SEQ_ALL = 2, | |
175 | }; | |
176 | ||
41c43fbe AST |
177 | /** |
178 | * enum l2tp_debug_flags - debug message categories for L2TP tunnels/sessions | |
179 | * | |
180 | * @L2TP_MSG_DEBUG: verbose debug (if compiled in) | |
181 | * @L2TP_MSG_CONTROL: userspace - kernel interface | |
182 | * @L2TP_MSG_SEQ: sequence numbers | |
183 | * @L2TP_MSG_DATA: data packets | |
184 | */ | |
185 | enum l2tp_debug_flags { | |
186 | L2TP_MSG_DEBUG = (1 << 0), | |
187 | L2TP_MSG_CONTROL = (1 << 1), | |
188 | L2TP_MSG_SEQ = (1 << 2), | |
189 | L2TP_MSG_DATA = (1 << 3), | |
190 | }; | |
191 | ||
607ca46e DH |
192 | /* |
193 | * NETLINK_GENERIC related info | |
194 | */ | |
195 | #define L2TP_GENL_NAME "l2tp" | |
196 | #define L2TP_GENL_VERSION 0x1 | |
33f72e6f | 197 | #define L2TP_GENL_MCGROUP "l2tp" |
607ca46e DH |
198 | |
199 | #endif /* _UAPI_LINUX_L2TP_H_ */ |