1 files changed, 104 insertions, 0 deletions
diff --git a/include/uapi/linux/if_pppol2tp.h b/include/uapi/linux/if_pppol2tp.h
new file mode 100644
index 000000000000..163e8adac2d6
--- /dev/null
+++ b/include/uapi/linux/if_pppol2tp.h
@@ -0,0 +1,104 @@
+/***************************************************************************
+ * 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>
+
+
+/* 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 */
+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 /* _UAPI__LINUX_IF_PPPOL2TP_H */