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Edit File : if_pppol2tp.h \| Size : 3.21 KB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note / /************************************************************************** * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661) * * This file supplies definitions required by the PPP over L2TP driver * (l2tp_ppp.c). All version information wrt this file is located in l2tp_ppp.c * * License: * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * / #ifndef __LINUX_IF_PPPOL2TP_H #define __LINUX_IF_PPPOL2TP_H #include <linux/types.h> #include <linux/in.h> #include <linux/in6.h> #include <linux/l2tp.h> / Structure used to connect() the socket to a particular tunnel UDP * socket over IPv4. / struct pppol2tp_addr { __kernel_pid_t pid; / pid that owns the fd. * 0 => current / int fd; / FD of UDP socket to use / struct sockaddr_in addr; / IP address and port to send to / __u16 s_tunnel, s_session; / For matching incoming packets / __u16 d_tunnel, d_session; / For sending outgoing packets / }; / Structure used to connect() the socket to a particular tunnel UDP * socket over IPv6. / struct pppol2tpin6_addr { __kernel_pid_t pid; / pid that owns the fd. * 0 => current / int fd; / FD of UDP socket to use / __u16 s_tunnel, s_session; / For matching incoming packets / __u16 d_tunnel, d_session; / For sending outgoing packets / struct sockaddr_in6 addr; / IP address and port to send to / }; / The L2TPv3 protocol changes tunnel and session ids from 16 to 32 * bits. So we need a different sockaddr structure. / struct pppol2tpv3_addr { __kernel_pid_t pid; / pid that owns the fd. * 0 => current / int fd; / FD of UDP or IP socket to use / struct sockaddr_in addr; / IP address and port to send to / __u32 s_tunnel, s_session; / For matching incoming packets / __u32 d_tunnel, d_session; / For sending outgoing packets / }; struct pppol2tpv3in6_addr { __kernel_pid_t pid; / pid that owns the fd. * 0 => current / int fd; / FD of UDP or IP socket to use / __u32 s_tunnel, s_session; / For matching incoming packets / __u32 d_tunnel, d_session; / For sending outgoing packets / struct sockaddr_in6 addr; / IP address and port to send to / }; / Socket options: * DEBUG - bitmask of debug message categories * SENDSEQ - 0 => don't send packets with sequence numbers * 1 => send packets with sequence numbers * RECVSEQ - 0 => receive packet sequence numbers are optional * 1 => drop receive packets without sequence numbers * LNSMODE - 0 => act as LAC. * 1 => act as LNS. * REORDERTO - reorder timeout (in millisecs). If 0, don't try to reorder. / enum { PPPOL2TP_SO_DEBUG = 1, PPPOL2TP_SO_RECVSEQ = 2, PPPOL2TP_SO_SENDSEQ = 3, PPPOL2TP_SO_LNSMODE = 4, PPPOL2TP_SO_REORDERTO = 5, }; / Debug message categories for the DEBUG socket option (deprecated) / enum { PPPOL2TP_MSG_DEBUG = L2TP_MSG_DEBUG, PPPOL2TP_MSG_CONTROL = L2TP_MSG_CONTROL, PPPOL2TP_MSG_SEQ = L2TP_MSG_SEQ, PPPOL2TP_MSG_DATA = L2TP_MSG_DATA, }; #endif / __LINUX_IF_PPPOL2TP_H */ Back

Edit File : if_pppol2tp.h | Size : 3.21 KB

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/***************************************************************************
 * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661)
 *
 * This file supplies definitions required by the PPP over L2TP driver
 * (l2tp_ppp.c).  All version information wrt this file is located in l2tp_ppp.c
 *
 * License:
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 *
 */

#ifndef __LINUX_IF_PPPOL2TP_H
#define __LINUX_IF_PPPOL2TP_H

#include <linux/types.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/l2tp.h>

/* Structure used to connect() the socket to a particular tunnel UDP
 * socket over IPv4.
 */
struct pppol2tp_addr {
	__kernel_pid_t	pid;		/* pid that owns the fd.
					 * 0 => current */
	int	fd;			/* FD of UDP socket to use */

struct sockaddr_in addr;	/* IP address and port to send to */

__u16 s_tunnel, s_session;	/* For matching incoming packets */
	__u16 d_tunnel, d_session;	/* For sending outgoing packets */
};

/* Structure used to connect() the socket to a particular tunnel UDP
 * socket over IPv6.
 */
struct pppol2tpin6_addr {
	__kernel_pid_t	pid;		/* pid that owns the fd.
					 * 0 => current */
	int	fd;			/* FD of UDP socket to use */

__u16 s_tunnel, s_session;	/* For matching incoming packets */
	__u16 d_tunnel, d_session;	/* For sending outgoing packets */

struct sockaddr_in6 addr;	/* IP address and port to send to */
};

/* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
 * bits. So we need a different sockaddr structure.
 */
struct pppol2tpv3_addr {
	__kernel_pid_t	pid;		/* pid that owns the fd.
					 * 0 => current */
	int	fd;			/* FD of UDP or IP socket to use */

struct sockaddr_in addr;	/* IP address and port to send to */

__u32 s_tunnel, s_session;	/* For matching incoming packets */
	__u32 d_tunnel, d_session;	/* For sending outgoing packets */
};

struct pppol2tpv3in6_addr {
	__kernel_pid_t	pid;		/* pid that owns the fd.
					 * 0 => current */
	int	fd;			/* FD of UDP or IP socket to use */

__u32 s_tunnel, s_session;	/* For matching incoming packets */
	__u32 d_tunnel, d_session;	/* For sending outgoing packets */

struct sockaddr_in6 addr;	/* IP address and port to send to */
};

/* Socket options:
 * DEBUG	- bitmask of debug message categories
 * SENDSEQ	- 0 => don't send packets with sequence numbers
 *		  1 => send packets with sequence numbers
 * RECVSEQ	- 0 => receive packet sequence numbers are optional
 *		  1 => drop receive packets without sequence numbers
 * LNSMODE	- 0 => act as LAC.
 *		  1 => act as LNS.
 * REORDERTO	- reorder timeout (in millisecs). If 0, don't try to reorder.
 */
enum {
	PPPOL2TP_SO_DEBUG	= 1,
	PPPOL2TP_SO_RECVSEQ	= 2,
	PPPOL2TP_SO_SENDSEQ	= 3,
	PPPOL2TP_SO_LNSMODE	= 4,
	PPPOL2TP_SO_REORDERTO	= 5,
};

/* Debug message categories for the DEBUG socket option (deprecated) */
enum {
	PPPOL2TP_MSG_DEBUG	= L2TP_MSG_DEBUG,
	PPPOL2TP_MSG_CONTROL	= L2TP_MSG_CONTROL,
	PPPOL2TP_MSG_SEQ	= L2TP_MSG_SEQ,
	PPPOL2TP_MSG_DATA	= L2TP_MSG_DATA,
};

#endif /* __LINUX_IF_PPPOL2TP_H */

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