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![Greg Kroah-Hartman](/assets/img/avatar_default.png)
Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
200 lines
5.5 KiB
C
200 lines
5.5 KiB
C
/* 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 <jchapman@katalix.com>
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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, vlanid
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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, offset, data_seq, cookie, peer_cookie, offset, l2spec
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* SESSION_DELETE - SESSION_ID
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* SESSION_MODIFY - SESSION_ID, data_seq
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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 */
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L2TP_ATTR_DATA_SEQ, /* u16 */
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L2TP_ATTR_L2SPEC_TYPE, /* u8, enum l2tp_l2spec_type */
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L2TP_ATTR_L2SPEC_LEN, /* u8, enum l2tp_l2spec_type */
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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 */
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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 */
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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 */
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L2TP_ATTR_MRU, /* u16 */
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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_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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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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* @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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