| /*************************************************************************** |
| * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661) |
| * |
| * This file supplies definitions required by the PPP over L2TP driver |
| * (pppol2tp.c). All version information wrt this file is located in pppol2tp.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> |
| |
| |
| /* 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 |