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TOMOYO Linux Cross Reference
Linux/include/uapi/linux/l2tp.h

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  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>
 12 #ifndef __KERNEL__
 13 #include <netinet/in.h>
 14 #endif
 15 
 16 #define IPPROTO_L2TP            115
 17 
 18 /**
 19  * struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets
 20  * @l2tp_family:  address family number AF_L2TPIP.
 21  * @l2tp_addr:    protocol specific address information
 22  * @l2tp_conn_id: connection id of tunnel
 23  */
 24 #define __SOCK_SIZE__   16              /* sizeof(struct sockaddr)      */
 25 struct sockaddr_l2tpip {
 26         /* The first fields must match struct sockaddr_in */
 27         __kernel_sa_family_t l2tp_family; /* AF_INET */
 28         __be16          l2tp_unused;    /* INET port number (unused) */
 29         struct in_addr  l2tp_addr;      /* Internet address */
 30 
 31         __u32           l2tp_conn_id;   /* Connection ID of tunnel */
 32 
 33         /* Pad to size of `struct sockaddr'. */
 34         unsigned char   __pad[sizeof(struct sockaddr) -
 35                               sizeof(__kernel_sa_family_t) -
 36                               sizeof(__be16) - sizeof(struct in_addr) -
 37                               sizeof(__u32)];
 38 };
 39 
 40 /**
 41  * struct sockaddr_l2tpip6 - the sockaddr structure for L2TP-over-IPv6 sockets
 42  * @l2tp_family:  address family number AF_L2TPIP.
 43  * @l2tp_addr:    protocol specific address information
 44  * @l2tp_conn_id: connection id of tunnel
 45  */
 46 struct sockaddr_l2tpip6 {
 47         /* The first fields must match struct sockaddr_in6 */
 48         __kernel_sa_family_t l2tp_family; /* AF_INET6 */
 49         __be16          l2tp_unused;    /* INET port number (unused) */
 50         __be32          l2tp_flowinfo;  /* IPv6 flow information */
 51         struct in6_addr l2tp_addr;      /* IPv6 address */
 52         __u32           l2tp_scope_id;  /* scope id (new in RFC2553) */
 53         __u32           l2tp_conn_id;   /* Connection ID of tunnel */
 54 };
 55 
 56 /*****************************************************************************
 57  *  NETLINK_GENERIC netlink family.
 58  *****************************************************************************/
 59 
 60 /*
 61  * Commands.
 62  * Valid TLVs of each command are:-
 63  * TUNNEL_CREATE        - CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum, vlanid
 64  * TUNNEL_DELETE        - CONN_ID
 65  * TUNNEL_MODIFY        - CONN_ID, udpcsum
 66  * TUNNEL_GETSTATS      - CONN_ID, (stats)
 67  * TUNNEL_GET           - CONN_ID, (...)
 68  * SESSION_CREATE       - SESSION_ID, PW_TYPE, offset, data_seq, cookie, peer_cookie, offset, l2spec
 69  * SESSION_DELETE       - SESSION_ID
 70  * SESSION_MODIFY       - SESSION_ID, data_seq
 71  * SESSION_GET          - SESSION_ID, (...)
 72  * SESSION_GETSTATS     - SESSION_ID, (stats)
 73  *
 74  */
 75 enum {
 76         L2TP_CMD_NOOP,
 77         L2TP_CMD_TUNNEL_CREATE,
 78         L2TP_CMD_TUNNEL_DELETE,
 79         L2TP_CMD_TUNNEL_MODIFY,
 80         L2TP_CMD_TUNNEL_GET,
 81         L2TP_CMD_SESSION_CREATE,
 82         L2TP_CMD_SESSION_DELETE,
 83         L2TP_CMD_SESSION_MODIFY,
 84         L2TP_CMD_SESSION_GET,
 85         __L2TP_CMD_MAX,
 86 };
 87 
 88 #define L2TP_CMD_MAX                    (__L2TP_CMD_MAX - 1)
 89 
 90 /*
 91  * ATTR types defined for L2TP
 92  */
 93 enum {
 94         L2TP_ATTR_NONE,                 /* no data */
 95         L2TP_ATTR_PW_TYPE,              /* u16, enum l2tp_pwtype */
 96         L2TP_ATTR_ENCAP_TYPE,           /* u16, enum l2tp_encap_type */
 97         L2TP_ATTR_OFFSET,               /* u16 */
 98         L2TP_ATTR_DATA_SEQ,             /* u16 */
 99         L2TP_ATTR_L2SPEC_TYPE,          /* u8, enum l2tp_l2spec_type */
100         L2TP_ATTR_L2SPEC_LEN,           /* u8, enum l2tp_l2spec_type */
101         L2TP_ATTR_PROTO_VERSION,        /* u8 */
102         L2TP_ATTR_IFNAME,               /* string */
103         L2TP_ATTR_CONN_ID,              /* u32 */
104         L2TP_ATTR_PEER_CONN_ID,         /* u32 */
105         L2TP_ATTR_SESSION_ID,           /* u32 */
106         L2TP_ATTR_PEER_SESSION_ID,      /* u32 */
107         L2TP_ATTR_UDP_CSUM,             /* u8 */
108         L2TP_ATTR_VLAN_ID,              /* u16 */
109         L2TP_ATTR_COOKIE,               /* 0, 4 or 8 bytes */
110         L2TP_ATTR_PEER_COOKIE,          /* 0, 4 or 8 bytes */
111         L2TP_ATTR_DEBUG,                /* u32 */
112         L2TP_ATTR_RECV_SEQ,             /* u8 */
113         L2TP_ATTR_SEND_SEQ,             /* u8 */
114         L2TP_ATTR_LNS_MODE,             /* u8 */
115         L2TP_ATTR_USING_IPSEC,          /* u8 */
116         L2TP_ATTR_RECV_TIMEOUT,         /* msec */
117         L2TP_ATTR_FD,                   /* int */
118         L2TP_ATTR_IP_SADDR,             /* u32 */
119         L2TP_ATTR_IP_DADDR,             /* u32 */
120         L2TP_ATTR_UDP_SPORT,            /* u16 */
121         L2TP_ATTR_UDP_DPORT,            /* u16 */
122         L2TP_ATTR_MTU,                  /* u16 */
123         L2TP_ATTR_MRU,                  /* u16 */
124         L2TP_ATTR_STATS,                /* nested */
125         L2TP_ATTR_IP6_SADDR,            /* struct in6_addr */
126         L2TP_ATTR_IP6_DADDR,            /* struct in6_addr */
127         L2TP_ATTR_UDP_ZERO_CSUM6_TX,    /* u8 */
128         L2TP_ATTR_UDP_ZERO_CSUM6_RX,    /* u8 */
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 */
145         __L2TP_ATTR_STATS_MAX,
146 };
147 
148 #define L2TP_ATTR_STATS_MAX             (__L2TP_ATTR_STATS_MAX - 1)
149 
150 enum l2tp_pwtype {
151         L2TP_PWTYPE_NONE = 0x0000,
152         L2TP_PWTYPE_ETH_VLAN = 0x0004,
153         L2TP_PWTYPE_ETH = 0x0005,
154         L2TP_PWTYPE_PPP = 0x0007,
155         L2TP_PWTYPE_PPP_AC = 0x0008,
156         L2TP_PWTYPE_IP = 0x000b,
157         __L2TP_PWTYPE_MAX
158 };
159 
160 enum l2tp_l2spec_type {
161         L2TP_L2SPECTYPE_NONE,
162         L2TP_L2SPECTYPE_DEFAULT,
163 };
164 
165 enum l2tp_encap_type {
166         L2TP_ENCAPTYPE_UDP,
167         L2TP_ENCAPTYPE_IP,
168 };
169 
170 enum l2tp_seqmode {
171         L2TP_SEQ_NONE = 0,
172         L2TP_SEQ_IP = 1,
173         L2TP_SEQ_ALL = 2,
174 };
175 
176 /*
177  * NETLINK_GENERIC related info
178  */
179 #define L2TP_GENL_NAME          "l2tp"
180 #define L2TP_GENL_VERSION       0x1
181 #define L2TP_GENL_MCGROUP       "l2tp"
182 
183 #endif /* _UAPI_LINUX_L2TP_H_ */
184 

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