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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
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".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
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>
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/***************************************************************************
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* Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661)
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*
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* This file supplies definitions required by the PPP over L2TP driver
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* (l2tp_ppp.c). All version information wrt this file is located in l2tp_ppp.c
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*
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* License:
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*/
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#ifndef _UAPI__LINUX_IF_PPPOL2TP_H
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#define _UAPI__LINUX_IF_PPPOL2TP_H
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#include <linux/types.h>
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#include <linux/in.h>
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#include <linux/in6.h>
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#include <linux/l2tp.h>
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/* Structure used to connect() the socket to a particular tunnel UDP
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* socket over IPv4.
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*/
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struct pppol2tp_addr {
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__kernel_pid_t pid; /* pid that owns the fd.
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* 0 => current */
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int fd; /* FD of UDP socket to use */
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struct sockaddr_in addr; /* IP address and port to send to */
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__u16 s_tunnel, s_session; /* For matching incoming packets */
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__u16 d_tunnel, d_session; /* For sending outgoing packets */
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};
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/* Structure used to connect() the socket to a particular tunnel UDP
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* socket over IPv6.
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*/
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struct pppol2tpin6_addr {
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__kernel_pid_t pid; /* pid that owns the fd.
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* 0 => current */
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int fd; /* FD of UDP socket to use */
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__u16 s_tunnel, s_session; /* For matching incoming packets */
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__u16 d_tunnel, d_session; /* For sending outgoing packets */
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struct sockaddr_in6 addr; /* IP address and port to send to */
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};
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/* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
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* bits. So we need a different sockaddr structure.
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*/
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struct pppol2tpv3_addr {
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__kernel_pid_t pid; /* pid that owns the fd.
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* 0 => current */
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int fd; /* FD of UDP or IP socket to use */
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struct sockaddr_in addr; /* IP address and port to send to */
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__u32 s_tunnel, s_session; /* For matching incoming packets */
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__u32 d_tunnel, d_session; /* For sending outgoing packets */
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};
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struct pppol2tpv3in6_addr {
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__kernel_pid_t pid; /* pid that owns the fd.
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* 0 => current */
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int fd; /* FD of UDP or IP socket to use */
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__u32 s_tunnel, s_session; /* For matching incoming packets */
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__u32 d_tunnel, d_session; /* For sending outgoing packets */
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struct sockaddr_in6 addr; /* IP address and port to send to */
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};
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/* Socket options:
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* DEBUG - bitmask of debug message categories
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* SENDSEQ - 0 => don't send packets with sequence numbers
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* 1 => send packets with sequence numbers
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* RECVSEQ - 0 => receive packet sequence numbers are optional
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* 1 => drop receive packets without sequence numbers
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* LNSMODE - 0 => act as LAC.
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* 1 => act as LNS.
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* REORDERTO - reorder timeout (in millisecs). If 0, don't try to reorder.
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*/
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enum {
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PPPOL2TP_SO_DEBUG = 1,
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PPPOL2TP_SO_RECVSEQ = 2,
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PPPOL2TP_SO_SENDSEQ = 3,
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PPPOL2TP_SO_LNSMODE = 4,
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PPPOL2TP_SO_REORDERTO = 5,
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};
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/* Debug message categories for the DEBUG socket option (deprecated) */
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enum {
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PPPOL2TP_MSG_DEBUG = L2TP_MSG_DEBUG,
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PPPOL2TP_MSG_CONTROL = L2TP_MSG_CONTROL,
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PPPOL2TP_MSG_SEQ = L2TP_MSG_SEQ,
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PPPOL2TP_MSG_DATA = L2TP_MSG_DATA,
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};
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#endif /* _UAPI__LINUX_IF_PPPOL2TP_H */
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