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205 lines
5.7 KiB
205 lines
5.7 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* |
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* L2TP-over-IP socket for L2TPv3. |
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* |
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* Author: James Chapman <[email protected]> |
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*/ |
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#ifndef _UAPI_LINUX_L2TP_H_ |
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#define _UAPI_LINUX_L2TP_H_ |
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#include <linux/types.h> |
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#include <linux/socket.h> |
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#include <linux/in.h> |
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#include <linux/in6.h> |
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#define IPPROTO_L2TP 115 |
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/** |
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* struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets |
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* @l2tp_family: address family number AF_L2TPIP. |
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* @l2tp_addr: protocol specific address information |
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* @l2tp_conn_id: connection id of tunnel |
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*/ |
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#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ |
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struct sockaddr_l2tpip { |
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/* The first fields must match struct sockaddr_in */ |
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__kernel_sa_family_t l2tp_family; /* AF_INET */ |
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__be16 l2tp_unused; /* INET port number (unused) */ |
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struct in_addr l2tp_addr; /* Internet address */ |
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__u32 l2tp_conn_id; /* Connection ID of tunnel */ |
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/* Pad to size of `struct sockaddr'. */ |
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unsigned char __pad[__SOCK_SIZE__ - |
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sizeof(__kernel_sa_family_t) - |
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sizeof(__be16) - sizeof(struct in_addr) - |
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sizeof(__u32)]; |
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}; |
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/** |
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* struct sockaddr_l2tpip6 - the sockaddr structure for L2TP-over-IPv6 sockets |
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* @l2tp_family: address family number AF_L2TPIP. |
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* @l2tp_addr: protocol specific address information |
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* @l2tp_conn_id: connection id of tunnel |
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*/ |
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struct sockaddr_l2tpip6 { |
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/* The first fields must match struct sockaddr_in6 */ |
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__kernel_sa_family_t l2tp_family; /* AF_INET6 */ |
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__be16 l2tp_unused; /* INET port number (unused) */ |
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__be32 l2tp_flowinfo; /* IPv6 flow information */ |
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struct in6_addr l2tp_addr; /* IPv6 address */ |
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__u32 l2tp_scope_id; /* scope id (new in RFC2553) */ |
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__u32 l2tp_conn_id; /* Connection ID of tunnel */ |
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}; |
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/***************************************************************************** |
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* NETLINK_GENERIC netlink family. |
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*****************************************************************************/ |
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/* |
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* Commands. |
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* Valid TLVs of each command are:- |
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* TUNNEL_CREATE - CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum |
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* TUNNEL_DELETE - CONN_ID |
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* TUNNEL_MODIFY - CONN_ID, udpcsum |
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* TUNNEL_GETSTATS - CONN_ID, (stats) |
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* TUNNEL_GET - CONN_ID, (...) |
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* SESSION_CREATE - SESSION_ID, PW_TYPE, cookie, peer_cookie, l2spec |
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* SESSION_DELETE - SESSION_ID |
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* SESSION_MODIFY - SESSION_ID |
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* SESSION_GET - SESSION_ID, (...) |
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* SESSION_GETSTATS - SESSION_ID, (stats) |
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* |
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*/ |
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enum { |
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L2TP_CMD_NOOP, |
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L2TP_CMD_TUNNEL_CREATE, |
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L2TP_CMD_TUNNEL_DELETE, |
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L2TP_CMD_TUNNEL_MODIFY, |
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L2TP_CMD_TUNNEL_GET, |
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L2TP_CMD_SESSION_CREATE, |
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L2TP_CMD_SESSION_DELETE, |
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L2TP_CMD_SESSION_MODIFY, |
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L2TP_CMD_SESSION_GET, |
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__L2TP_CMD_MAX, |
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}; |
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#define L2TP_CMD_MAX (__L2TP_CMD_MAX - 1) |
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/* |
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* ATTR types defined for L2TP |
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*/ |
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enum { |
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L2TP_ATTR_NONE, /* no data */ |
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L2TP_ATTR_PW_TYPE, /* u16, enum l2tp_pwtype */ |
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L2TP_ATTR_ENCAP_TYPE, /* u16, enum l2tp_encap_type */ |
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L2TP_ATTR_OFFSET, /* u16 (not used) */ |
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L2TP_ATTR_DATA_SEQ, /* u16 (not used) */ |
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L2TP_ATTR_L2SPEC_TYPE, /* u8, enum l2tp_l2spec_type */ |
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L2TP_ATTR_L2SPEC_LEN, /* u8 (not used) */ |
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L2TP_ATTR_PROTO_VERSION, /* u8 */ |
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L2TP_ATTR_IFNAME, /* string */ |
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L2TP_ATTR_CONN_ID, /* u32 */ |
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L2TP_ATTR_PEER_CONN_ID, /* u32 */ |
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L2TP_ATTR_SESSION_ID, /* u32 */ |
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L2TP_ATTR_PEER_SESSION_ID, /* u32 */ |
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L2TP_ATTR_UDP_CSUM, /* u8 */ |
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L2TP_ATTR_VLAN_ID, /* u16 (not used) */ |
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L2TP_ATTR_COOKIE, /* 0, 4 or 8 bytes */ |
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L2TP_ATTR_PEER_COOKIE, /* 0, 4 or 8 bytes */ |
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L2TP_ATTR_DEBUG, /* u32, enum l2tp_debug_flags (not used) */ |
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L2TP_ATTR_RECV_SEQ, /* u8 */ |
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L2TP_ATTR_SEND_SEQ, /* u8 */ |
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L2TP_ATTR_LNS_MODE, /* u8 */ |
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L2TP_ATTR_USING_IPSEC, /* u8 */ |
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L2TP_ATTR_RECV_TIMEOUT, /* msec */ |
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L2TP_ATTR_FD, /* int */ |
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L2TP_ATTR_IP_SADDR, /* u32 */ |
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L2TP_ATTR_IP_DADDR, /* u32 */ |
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L2TP_ATTR_UDP_SPORT, /* u16 */ |
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L2TP_ATTR_UDP_DPORT, /* u16 */ |
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L2TP_ATTR_MTU, /* u16 (not used) */ |
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L2TP_ATTR_MRU, /* u16 (not used) */ |
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L2TP_ATTR_STATS, /* nested */ |
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L2TP_ATTR_IP6_SADDR, /* struct in6_addr */ |
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L2TP_ATTR_IP6_DADDR, /* struct in6_addr */ |
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L2TP_ATTR_UDP_ZERO_CSUM6_TX, /* flag */ |
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L2TP_ATTR_UDP_ZERO_CSUM6_RX, /* flag */ |
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L2TP_ATTR_PAD, |
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__L2TP_ATTR_MAX, |
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}; |
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#define L2TP_ATTR_MAX (__L2TP_ATTR_MAX - 1) |
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/* Nested in L2TP_ATTR_STATS */ |
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enum { |
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L2TP_ATTR_STATS_NONE, /* no data */ |
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L2TP_ATTR_TX_PACKETS, /* u64 */ |
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L2TP_ATTR_TX_BYTES, /* u64 */ |
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L2TP_ATTR_TX_ERRORS, /* u64 */ |
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L2TP_ATTR_RX_PACKETS, /* u64 */ |
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L2TP_ATTR_RX_BYTES, /* u64 */ |
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L2TP_ATTR_RX_SEQ_DISCARDS, /* u64 */ |
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L2TP_ATTR_RX_OOS_PACKETS, /* u64 */ |
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L2TP_ATTR_RX_ERRORS, /* u64 */ |
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L2TP_ATTR_STATS_PAD, |
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L2TP_ATTR_RX_COOKIE_DISCARDS, /* u64 */ |
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L2TP_ATTR_RX_INVALID, /* u64 */ |
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__L2TP_ATTR_STATS_MAX, |
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}; |
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#define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1) |
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enum l2tp_pwtype { |
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L2TP_PWTYPE_NONE = 0x0000, |
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L2TP_PWTYPE_ETH_VLAN = 0x0004, |
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L2TP_PWTYPE_ETH = 0x0005, |
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L2TP_PWTYPE_PPP = 0x0007, |
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L2TP_PWTYPE_PPP_AC = 0x0008, |
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L2TP_PWTYPE_IP = 0x000b, |
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__L2TP_PWTYPE_MAX |
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}; |
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enum l2tp_l2spec_type { |
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L2TP_L2SPECTYPE_NONE, |
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L2TP_L2SPECTYPE_DEFAULT, |
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}; |
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enum l2tp_encap_type { |
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L2TP_ENCAPTYPE_UDP, |
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L2TP_ENCAPTYPE_IP, |
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}; |
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/* For L2TP_ATTR_DATA_SEQ. Unused. */ |
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enum l2tp_seqmode { |
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L2TP_SEQ_NONE = 0, |
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L2TP_SEQ_IP = 1, |
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L2TP_SEQ_ALL = 2, |
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}; |
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/** |
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* enum l2tp_debug_flags - debug message categories for L2TP tunnels/sessions. |
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* |
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* Unused. |
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* |
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* @L2TP_MSG_DEBUG: verbose debug (if compiled in) |
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* @L2TP_MSG_CONTROL: userspace - kernel interface |
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* @L2TP_MSG_SEQ: sequence numbers |
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* @L2TP_MSG_DATA: data packets |
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*/ |
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enum l2tp_debug_flags { |
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L2TP_MSG_DEBUG = (1 << 0), |
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L2TP_MSG_CONTROL = (1 << 1), |
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L2TP_MSG_SEQ = (1 << 2), |
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L2TP_MSG_DATA = (1 << 3), |
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}; |
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/* |
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* NETLINK_GENERIC related info |
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*/ |
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#define L2TP_GENL_NAME "l2tp" |
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#define L2TP_GENL_VERSION 0x1 |
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#define L2TP_GENL_MCGROUP "l2tp" |
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#endif /* _UAPI_LINUX_L2TP_H_ */
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