| /* 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 _UAPI__LINUX_IF_PPPOL2TP_H |
| #define _UAPI__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 (not used) |
| * 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 /* _UAPI__LINUX_IF_PPPOL2TP_H */ |