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d2cf336167
Now that encap_rcv() works on IPv6 UDP sockets, wire L2TP up to IPv6. Support has been tested with and without hardware offloading. This version fixes the L2TP over localhost issue with incorrect checksums being reported. Signed-off-by: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by: David S. Miller <davem@davemloft.net>
109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/***************************************************************************
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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 __LINUX_IF_PPPOL2TP_H
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#define __LINUX_IF_PPPOL2TP_H
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#include <linux/types.h>
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#ifdef __KERNEL__
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#include <linux/in.h>
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#include <linux/in6.h>
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#endif
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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 */
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enum {
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PPPOL2TP_MSG_DEBUG = (1 << 0), /* verbose debug (if
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* compiled in) */
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PPPOL2TP_MSG_CONTROL = (1 << 1), /* userspace - kernel
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* interface */
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PPPOL2TP_MSG_SEQ = (1 << 2), /* sequence numbers */
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PPPOL2TP_MSG_DATA = (1 << 3), /* data packets */
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};
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#endif
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