mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
synced 2025-01-16 05:26:07 +00:00
fd558d186d
This patch splits the pppol2tp driver into separate L2TP and PPP parts to prepare for L2TPv3 support. In L2TPv3, protocols other than PPP can be carried, so this split creates a common L2TP core that will handle the common L2TP bits which protocol support modules such as PPP will use. Note that the existing pppol2tp module is split into l2tp_core and l2tp_ppp by this change. There are no feature changes here. Internally, however, there are significant changes, mostly to handle the separation of PPP-specific data from the L2TP session and to provide hooks in the core for modules like PPP to access. Signed-off-by: James Chapman <jchapman@katalix.com> Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/***************************************************************************
|
|
* 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>
|
|
|
|
#ifdef __KERNEL__
|
|
#include <linux/in.h>
|
|
#endif
|
|
|
|
/* Structure used to connect() the socket to a particular tunnel UDP
|
|
* socket.
|
|
*/
|
|
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 */
|
|
};
|
|
|
|
/* 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 */
|
|
enum {
|
|
PPPOL2TP_MSG_DEBUG = (1 << 0), /* verbose debug (if
|
|
* compiled in) */
|
|
PPPOL2TP_MSG_CONTROL = (1 << 1), /* userspace - kernel
|
|
* interface */
|
|
PPPOL2TP_MSG_SEQ = (1 << 2), /* sequence numbers */
|
|
PPPOL2TP_MSG_DATA = (1 << 3), /* data packets */
|
|
};
|
|
|
|
|
|
|
|
#endif
|