Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 156 insertions, 0 deletions

diff --git a/kernel/include/uapi/linux/if_pppox.h b/kernel/include/uapi/linux/if_pppox.h
new file mode 100644
index 000000000..e12876933
--- /dev/null
+++ b/kernel/include/uapi/linux/if_pppox.h
@@ -0,0 +1,156 @@
+/***************************************************************************
+ * Linux PPP over X - Generic PPP transport layer sockets
+ * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516) 
+ *
+ * This file supplies definitions required by the PPP over Ethernet driver
+ * (pppox.c).  All version information wrt this file is located in pppox.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_PPPOX_H
+#define _UAPI__LINUX_IF_PPPOX_H
+
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+
+#include <linux/socket.h>
+#include <linux/if_ether.h>
+#include <linux/if_pppol2tp.h>
+
+/* For user-space programs to pick up these definitions
+ * which they wouldn't get otherwise without defining __KERNEL__
+ */
+#ifndef AF_PPPOX
+#define AF_PPPOX	24
+#define PF_PPPOX	AF_PPPOX
+#endif /* !(AF_PPPOX) */
+
+/************************************************************************ 
+ * PPPoE addressing definition 
+ */ 
+typedef __be16 sid_t;
+struct pppoe_addr {
+	sid_t         sid;                    /* Session identifier */
+	unsigned char remote[ETH_ALEN];       /* Remote address */
+	char          dev[IFNAMSIZ];          /* Local device to use */
+}; 
+ 
+/************************************************************************ 
+ * PPTP addressing definition
+ */
+struct pptp_addr {
+	__u16		call_id;
+	struct in_addr	sin_addr;
+};
+
+/************************************************************************
+ * Protocols supported by AF_PPPOX
+ */
+#define PX_PROTO_OE    0 /* Currently just PPPoE */
+#define PX_PROTO_OL2TP 1 /* Now L2TP also */
+#define PX_PROTO_PPTP  2
+#define PX_MAX_PROTO   3
+
+struct sockaddr_pppox {
+	__kernel_sa_family_t sa_family;       /* address family, AF_PPPOX */
+	unsigned int    sa_protocol;          /* protocol identifier */
+	union {
+		struct pppoe_addr  pppoe;
+		struct pptp_addr   pptp;
+	} sa_addr;
+} __packed;
+
+/* The use of the above union isn't viable because the size of this
+ * struct must stay fixed over time -- applications use sizeof(struct
+ * sockaddr_pppox) to fill it. We use a protocol specific sockaddr
+ * type instead.
+ */
+struct sockaddr_pppol2tp {
+	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
+	unsigned int    sa_protocol;    /* protocol identifier */
+	struct pppol2tp_addr pppol2tp;
+} __packed;
+
+struct sockaddr_pppol2tpin6 {
+	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
+	unsigned int    sa_protocol;    /* protocol identifier */
+	struct pppol2tpin6_addr pppol2tp;
+} __packed;
+
+/* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
+ * bits. So we need a different sockaddr structure.
+ */
+struct sockaddr_pppol2tpv3 {
+	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
+	unsigned int    sa_protocol;    /* protocol identifier */
+	struct pppol2tpv3_addr pppol2tp;
+} __packed;
+
+struct sockaddr_pppol2tpv3in6 {
+	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
+	unsigned int    sa_protocol;    /* protocol identifier */
+	struct pppol2tpv3in6_addr pppol2tp;
+} __packed;
+
+/*********************************************************************
+ *
+ * ioctl interface for defining forwarding of connections
+ *
+ ********************************************************************/
+
+#define PPPOEIOCSFWD	_IOW(0xB1 ,0, size_t)
+#define PPPOEIOCDFWD	_IO(0xB1 ,1)
+/*#define PPPOEIOCGFWD	_IOWR(0xB1,2, size_t)*/
+
+/* Codes to identify message types */
+#define PADI_CODE	0x09
+#define PADO_CODE	0x07
+#define PADR_CODE	0x19
+#define PADS_CODE	0x65
+#define PADT_CODE	0xa7
+struct pppoe_tag {
+	__be16 tag_type;
+	__be16 tag_len;
+	char tag_data[0];
+} __attribute__ ((packed));
+
+/* Tag identifiers */
+#define PTT_EOL		__cpu_to_be16(0x0000)
+#define PTT_SRV_NAME	__cpu_to_be16(0x0101)
+#define PTT_AC_NAME	__cpu_to_be16(0x0102)
+#define PTT_HOST_UNIQ	__cpu_to_be16(0x0103)
+#define PTT_AC_COOKIE	__cpu_to_be16(0x0104)
+#define PTT_VENDOR 	__cpu_to_be16(0x0105)
+#define PTT_RELAY_SID	__cpu_to_be16(0x0110)
+#define PTT_SRV_ERR     __cpu_to_be16(0x0201)
+#define PTT_SYS_ERR  	__cpu_to_be16(0x0202)
+#define PTT_GEN_ERR  	__cpu_to_be16(0x0203)
+
+struct pppoe_hdr {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	__u8 type : 4;
+	__u8 ver : 4;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	__u8 ver : 4;
+	__u8 type : 4;
+#else
+#error	"Please fix <asm/byteorder.h>"
+#endif
+	__u8 code;
+	__be16 sid;
+	__be16 length;
+	struct pppoe_tag tag[0];
+} __packed;
+
+/* Length of entire PPPoE + PPP header */
+#define PPPOE_SES_HLEN	8
+
+
+#endif /* _UAPI__LINUX_IF_PPPOX_H */