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1 | /* |
2 | * L2TP-over-IP socket for L2TPv3. |
3 | * |
4 | * Author: James Chapman <jchapman@katalix.com> |
5 | */ |
6 | |
7 | #ifndef _LINUX_L2TP_H_ |
8 | #define _LINUX_L2TP_H_ |
9 | |
10 | #include <linux/types.h> |
11 | #ifdef __KERNEL__ |
12 | #include <linux/socket.h> |
13 | #include <linux/in.h> |
14 | #else |
15 | #include <netinet/in.h> |
16 | #endif |
17 | |
18 | #define IPPROTO_L2TP 115 |
19 | |
20 | /** |
21 | * struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets |
22 | * @l2tp_family: address family number AF_L2TPIP. |
23 | * @l2tp_addr: protocol specific address information |
24 | * @l2tp_conn_id: connection id of tunnel |
25 | */ |
26 | #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ |
27 | struct sockaddr_l2tpip { |
28 | /* The first fields must match struct sockaddr_in */ |
29 | sa_family_t l2tp_family; /* AF_INET */ |
30 | __be16 l2tp_unused; /* INET port number (unused) */ |
31 | struct in_addr l2tp_addr; /* Internet address */ |
32 | |
33 | __u32 l2tp_conn_id; /* Connection ID of tunnel */ |
34 | |
35 | /* Pad to size of `struct sockaddr'. */ |
36 | unsigned char __pad[sizeof(struct sockaddr) - sizeof(sa_family_t) - |
37 | sizeof(__be16) - sizeof(struct in_addr) - |
38 | sizeof(__u32)]; |
39 | }; |
40 | |
41 | /***************************************************************************** |
42 | * NETLINK_GENERIC netlink family. |
43 | *****************************************************************************/ |
44 | |
45 | /* |
46 | * Commands. |
47 | * Valid TLVs of each command are:- |
48 | * TUNNEL_CREATE - CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum, vlanid |
49 | * TUNNEL_DELETE - CONN_ID |
50 | * TUNNEL_MODIFY - CONN_ID, udpcsum |
51 | * TUNNEL_GETSTATS - CONN_ID, (stats) |
52 | * TUNNEL_GET - CONN_ID, (...) |
53 | * SESSION_CREATE - SESSION_ID, PW_TYPE, offset, data_seq, cookie, peer_cookie, offset, l2spec |
54 | * SESSION_DELETE - SESSION_ID |
55 | * SESSION_MODIFY - SESSION_ID, data_seq |
56 | * SESSION_GET - SESSION_ID, (...) |
57 | * SESSION_GETSTATS - SESSION_ID, (stats) |
58 | * |
59 | */ |
60 | enum { |
61 | L2TP_CMD_NOOP, |
62 | L2TP_CMD_TUNNEL_CREATE, |
63 | L2TP_CMD_TUNNEL_DELETE, |
64 | L2TP_CMD_TUNNEL_MODIFY, |
65 | L2TP_CMD_TUNNEL_GET, |
66 | L2TP_CMD_SESSION_CREATE, |
67 | L2TP_CMD_SESSION_DELETE, |
68 | L2TP_CMD_SESSION_MODIFY, |
69 | L2TP_CMD_SESSION_GET, |
70 | __L2TP_CMD_MAX, |
71 | }; |
72 | |
73 | #define L2TP_CMD_MAX (__L2TP_CMD_MAX - 1) |
74 | |
75 | /* |
76 | * ATTR types defined for L2TP |
77 | */ |
78 | enum { |
79 | L2TP_ATTR_NONE, /* no data */ |
80 | L2TP_ATTR_PW_TYPE, /* u16, enum l2tp_pwtype */ |
81 | L2TP_ATTR_ENCAP_TYPE, /* u16, enum l2tp_encap_type */ |
82 | L2TP_ATTR_OFFSET, /* u16 */ |
83 | L2TP_ATTR_DATA_SEQ, /* u16 */ |
84 | L2TP_ATTR_L2SPEC_TYPE, /* u8, enum l2tp_l2spec_type */ |
85 | L2TP_ATTR_L2SPEC_LEN, /* u8, enum l2tp_l2spec_type */ |
86 | L2TP_ATTR_PROTO_VERSION, /* u8 */ |
87 | L2TP_ATTR_IFNAME, /* string */ |
88 | L2TP_ATTR_CONN_ID, /* u32 */ |
89 | L2TP_ATTR_PEER_CONN_ID, /* u32 */ |
90 | L2TP_ATTR_SESSION_ID, /* u32 */ |
91 | L2TP_ATTR_PEER_SESSION_ID, /* u32 */ |
92 | L2TP_ATTR_UDP_CSUM, /* u8 */ |
93 | L2TP_ATTR_VLAN_ID, /* u16 */ |
94 | L2TP_ATTR_COOKIE, /* 0, 4 or 8 bytes */ |
95 | L2TP_ATTR_PEER_COOKIE, /* 0, 4 or 8 bytes */ |
96 | L2TP_ATTR_DEBUG, /* u32 */ |
97 | L2TP_ATTR_RECV_SEQ, /* u8 */ |
98 | L2TP_ATTR_SEND_SEQ, /* u8 */ |
99 | L2TP_ATTR_LNS_MODE, /* u8 */ |
100 | L2TP_ATTR_USING_IPSEC, /* u8 */ |
101 | L2TP_ATTR_RECV_TIMEOUT, /* msec */ |
102 | L2TP_ATTR_FD, /* int */ |
103 | L2TP_ATTR_IP_SADDR, /* u32 */ |
104 | L2TP_ATTR_IP_DADDR, /* u32 */ |
105 | L2TP_ATTR_UDP_SPORT, /* u16 */ |
106 | L2TP_ATTR_UDP_DPORT, /* u16 */ |
107 | L2TP_ATTR_MTU, /* u16 */ |
108 | L2TP_ATTR_MRU, /* u16 */ |
109 | L2TP_ATTR_STATS, /* nested */ |
110 | __L2TP_ATTR_MAX, |
111 | }; |
112 | |
113 | #define L2TP_ATTR_MAX (__L2TP_ATTR_MAX - 1) |
114 | |
115 | /* Nested in L2TP_ATTR_STATS */ |
116 | enum { |
117 | L2TP_ATTR_STATS_NONE, /* no data */ |
118 | L2TP_ATTR_TX_PACKETS, /* u64 */ |
119 | L2TP_ATTR_TX_BYTES, /* u64 */ |
120 | L2TP_ATTR_TX_ERRORS, /* u64 */ |
121 | L2TP_ATTR_RX_PACKETS, /* u64 */ |
122 | L2TP_ATTR_RX_BYTES, /* u64 */ |
123 | L2TP_ATTR_RX_SEQ_DISCARDS, /* u64 */ |
124 | L2TP_ATTR_RX_OOS_PACKETS, /* u64 */ |
125 | L2TP_ATTR_RX_ERRORS, /* u64 */ |
126 | __L2TP_ATTR_STATS_MAX, |
127 | }; |
128 | |
129 | #define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1) |
130 | |
131 | enum l2tp_pwtype { |
132 | L2TP_PWTYPE_NONE = 0x0000, |
133 | L2TP_PWTYPE_ETH_VLAN = 0x0004, |
134 | L2TP_PWTYPE_ETH = 0x0005, |
135 | L2TP_PWTYPE_PPP = 0x0007, |
136 | L2TP_PWTYPE_PPP_AC = 0x0008, |
137 | L2TP_PWTYPE_IP = 0x000b, |
138 | __L2TP_PWTYPE_MAX |
139 | }; |
140 | |
141 | enum l2tp_l2spec_type { |
142 | L2TP_L2SPECTYPE_NONE, |
143 | L2TP_L2SPECTYPE_DEFAULT, |
144 | }; |
145 | |
146 | enum l2tp_encap_type { |
147 | L2TP_ENCAPTYPE_UDP, |
148 | L2TP_ENCAPTYPE_IP, |
149 | }; |
150 | |
151 | enum l2tp_seqmode { |
152 | L2TP_SEQ_NONE = 0, |
153 | L2TP_SEQ_IP = 1, |
154 | L2TP_SEQ_ALL = 2, |
155 | }; |
156 | |
157 | /* |
158 | * NETLINK_GENERIC related info |
159 | */ |
160 | #define L2TP_GENL_NAME "l2tp" |
161 | #define L2TP_GENL_VERSION 0x1 |
162 | |
163 | #endif |
164 |
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