2 * L2TP-over-IP socket for L2TPv3.
4 * Author: James Chapman <jchapman@katalix.com>
10 #include <linux/types.h>
11 #include <linux/socket.h>
12 #include <netinet/in.h>
14 #define IPPROTO_L2TP 115
17 * struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets
18 * @l2tp_family: address family number AF_L2TPIP.
19 * @l2tp_addr: protocol specific address information
20 * @l2tp_conn_id: connection id of tunnel
22 #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
23 struct sockaddr_l2tpip {
24 /* The first fields must match struct sockaddr_in */
25 __kernel_sa_family_t l2tp_family; /* AF_INET */
26 __be16 l2tp_unused; /* INET port number (unused) */
27 struct in_addr l2tp_addr; /* Internet address */
29 __u32 l2tp_conn_id; /* Connection ID of tunnel */
31 /* Pad to size of `struct sockaddr'. */
32 unsigned char __pad[sizeof(struct sockaddr) -
33 sizeof(__kernel_sa_family_t) -
34 sizeof(__be16) - sizeof(struct in_addr) -
39 * struct sockaddr_l2tpip6 - the sockaddr structure for L2TP-over-IPv6 sockets
40 * @l2tp_family: address family number AF_L2TPIP.
41 * @l2tp_addr: protocol specific address information
42 * @l2tp_conn_id: connection id of tunnel
44 struct sockaddr_l2tpip6 {
45 /* The first fields must match struct sockaddr_in6 */
46 __kernel_sa_family_t l2tp_family; /* AF_INET6 */
47 __be16 l2tp_unused; /* INET port number (unused) */
48 __be32 l2tp_flowinfo; /* IPv6 flow information */
49 struct in6_addr l2tp_addr; /* IPv6 address */
50 __u32 l2tp_scope_id; /* scope id (new in RFC2553) */
51 __u32 l2tp_conn_id; /* Connection ID of tunnel */
54 /*****************************************************************************
55 * NETLINK_GENERIC netlink family.
56 *****************************************************************************/
60 * Valid TLVs of each command are:-
61 * TUNNEL_CREATE - CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum, vlanid
62 * TUNNEL_DELETE - CONN_ID
63 * TUNNEL_MODIFY - CONN_ID, udpcsum
64 * TUNNEL_GETSTATS - CONN_ID, (stats)
65 * TUNNEL_GET - CONN_ID, (...)
66 * SESSION_CREATE - SESSION_ID, PW_TYPE, offset, data_seq, cookie, peer_cookie, offset, l2spec
67 * SESSION_DELETE - SESSION_ID
68 * SESSION_MODIFY - SESSION_ID, data_seq
69 * SESSION_GET - SESSION_ID, (...)
70 * SESSION_GETSTATS - SESSION_ID, (stats)
75 L2TP_CMD_TUNNEL_CREATE,
76 L2TP_CMD_TUNNEL_DELETE,
77 L2TP_CMD_TUNNEL_MODIFY,
79 L2TP_CMD_SESSION_CREATE,
80 L2TP_CMD_SESSION_DELETE,
81 L2TP_CMD_SESSION_MODIFY,
86 #define L2TP_CMD_MAX (__L2TP_CMD_MAX - 1)
89 * ATTR types defined for L2TP
92 L2TP_ATTR_NONE, /* no data */
93 L2TP_ATTR_PW_TYPE, /* u16, enum l2tp_pwtype */
94 L2TP_ATTR_ENCAP_TYPE, /* u16, enum l2tp_encap_type */
95 L2TP_ATTR_OFFSET, /* u16 */
96 L2TP_ATTR_DATA_SEQ, /* u16 */
97 L2TP_ATTR_L2SPEC_TYPE, /* u8, enum l2tp_l2spec_type */
98 L2TP_ATTR_L2SPEC_LEN, /* u8, enum l2tp_l2spec_type */
99 L2TP_ATTR_PROTO_VERSION, /* u8 */
100 L2TP_ATTR_IFNAME, /* string */
101 L2TP_ATTR_CONN_ID, /* u32 */
102 L2TP_ATTR_PEER_CONN_ID, /* u32 */
103 L2TP_ATTR_SESSION_ID, /* u32 */
104 L2TP_ATTR_PEER_SESSION_ID, /* u32 */
105 L2TP_ATTR_UDP_CSUM, /* u8 */
106 L2TP_ATTR_VLAN_ID, /* u16 */
107 L2TP_ATTR_COOKIE, /* 0, 4 or 8 bytes */
108 L2TP_ATTR_PEER_COOKIE, /* 0, 4 or 8 bytes */
109 L2TP_ATTR_DEBUG, /* u32 */
110 L2TP_ATTR_RECV_SEQ, /* u8 */
111 L2TP_ATTR_SEND_SEQ, /* u8 */
112 L2TP_ATTR_LNS_MODE, /* u8 */
113 L2TP_ATTR_USING_IPSEC, /* u8 */
114 L2TP_ATTR_RECV_TIMEOUT, /* msec */
115 L2TP_ATTR_FD, /* int */
116 L2TP_ATTR_IP_SADDR, /* u32 */
117 L2TP_ATTR_IP_DADDR, /* u32 */
118 L2TP_ATTR_UDP_SPORT, /* u16 */
119 L2TP_ATTR_UDP_DPORT, /* u16 */
120 L2TP_ATTR_MTU, /* u16 */
121 L2TP_ATTR_MRU, /* u16 */
122 L2TP_ATTR_STATS, /* nested */
123 L2TP_ATTR_IP6_SADDR, /* struct in6_addr */
124 L2TP_ATTR_IP6_DADDR, /* struct in6_addr */
128 #define L2TP_ATTR_MAX (__L2TP_ATTR_MAX - 1)
130 /* Nested in L2TP_ATTR_STATS */
132 L2TP_ATTR_STATS_NONE, /* no data */
133 L2TP_ATTR_TX_PACKETS, /* u64 */
134 L2TP_ATTR_TX_BYTES, /* u64 */
135 L2TP_ATTR_TX_ERRORS, /* u64 */
136 L2TP_ATTR_RX_PACKETS, /* u64 */
137 L2TP_ATTR_RX_BYTES, /* u64 */
138 L2TP_ATTR_RX_SEQ_DISCARDS, /* u64 */
139 L2TP_ATTR_RX_OOS_PACKETS, /* u64 */
140 L2TP_ATTR_RX_ERRORS, /* u64 */
141 __L2TP_ATTR_STATS_MAX,
144 #define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1)
147 L2TP_PWTYPE_NONE = 0x0000,
148 L2TP_PWTYPE_ETH_VLAN = 0x0004,
149 L2TP_PWTYPE_ETH = 0x0005,
150 L2TP_PWTYPE_PPP = 0x0007,
151 L2TP_PWTYPE_PPP_AC = 0x0008,
152 L2TP_PWTYPE_IP = 0x000b,
156 enum l2tp_l2spec_type {
157 L2TP_L2SPECTYPE_NONE,
158 L2TP_L2SPECTYPE_DEFAULT,
161 enum l2tp_encap_type {
173 * NETLINK_GENERIC related info
175 #define L2TP_GENL_NAME "l2tp"
176 #define L2TP_GENL_VERSION 0x1
178 #endif /* _LINUX_L2TP_H_ */