Initial import

Code is based on FreeBSD 8.2 with USB support from Sebastian Huber
and Thomas Doerfler. Initial TCP/IP stack work is from Kevel Kirspel.

1 files changed, 194 insertions, 0 deletions

diff --git a/rtems/freebsd/net/if_gre.h b/rtems/freebsd/net/if_gre.h
new file mode 100644
index 00000000..c21a9159
--- /dev/null
+++ b/rtems/freebsd/net/if_gre.h
@@ -0,0 +1,194 @@
+/*	$NetBSD: if_gre.h,v 1.13 2003/11/10 08:51:52 wiz Exp $ */
+/*	 $FreeBSD$ */
+
+/*-
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Heiko W.Rupp <hwr@pilhuhn.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _NET_IF_GRE_H
+#define _NET_IF_GRE_H
+
+#include <rtems/freebsd/sys/ioccom.h>
+#ifdef _KERNEL
+#include <rtems/freebsd/sys/queue.h>
+
+/*
+ * Version of the WCCP, need to be configured manually since
+ * header for version 2 is the same but IP payload is prepended
+ * with additional 4-bytes field.
+ */
+typedef enum {
+	WCCP_V1 = 0,
+	WCCP_V2
+} wccp_ver_t;
+
+struct gre_softc {
+	struct ifnet *sc_ifp;
+	LIST_ENTRY(gre_softc) sc_list;
+	int gre_unit;
+	int gre_flags;
+	u_int	gre_fibnum;	/* use this fib for envelopes */
+	struct in_addr g_src;	/* source address of gre packets */
+	struct in_addr g_dst;	/* destination address of gre packets */
+	struct route route;	/* routing entry that determines, where a
+				   encapsulated packet should go */
+	u_char g_proto;		/* protocol of encapsulator */
+
+	const struct encaptab *encap;	/* encapsulation cookie */
+
+	int called;		/* infinite recursion preventer */
+
+	uint32_t key;		/* key included in outgoing GRE packets */
+				/* zero means none */
+
+	wccp_ver_t wccp_ver;	/* version of the WCCP */
+};
+#define	GRE2IFP(sc)	((sc)->sc_ifp)
+
+
+struct gre_h {
+	u_int16_t flags;	/* GRE flags */
+	u_int16_t ptype;	/* protocol type of payload typically
+				   Ether protocol type*/
+	uint32_t options[0];	/* optional options */
+/*
+ *  from here on: fields are optional, presence indicated by flags
+ *
+	u_int_16 checksum	checksum (one-complements of GRE header
+				and payload
+				Present if (ck_pres | rt_pres == 1).
+				Valid if (ck_pres == 1).
+	u_int_16 offset		offset from start of routing filed to
+				first octet of active SRE (see below).
+				Present if (ck_pres | rt_pres == 1).
+				Valid if (rt_pres == 1).
+	u_int_32 key		inserted by encapsulator e.g. for
+				authentication
+				Present if (key_pres ==1 ).
+	u_int_32 seq_num	Sequence number to allow for packet order
+				Present if (seq_pres ==1 ).
+	struct gre_sre[] routing Routing fileds (see below)
+				Present if (rt_pres == 1)
+ */
+} __packed;
+
+struct greip {
+	struct ip gi_i;
+	struct gre_h  gi_g;
+} __packed;
+
+#define gi_pr		gi_i.ip_p
+#define gi_len		gi_i.ip_len
+#define gi_src		gi_i.ip_src
+#define gi_dst		gi_i.ip_dst
+#define gi_ptype	gi_g.ptype
+#define gi_flags	gi_g.flags
+#define gi_options	gi_g.options
+
+#define GRE_CP		0x8000  /* Checksum Present */
+#define GRE_RP		0x4000  /* Routing Present */
+#define GRE_KP		0x2000  /* Key Present */
+#define GRE_SP		0x1000  /* Sequence Present */
+#define GRE_SS		0x0800	/* Strict Source Route */
+
+/*
+ * CISCO uses special type for GRE tunnel created as part of WCCP
+ * connection, while in fact those packets are just IPv4 encapsulated
+ * into GRE.
+ */
+#define WCCP_PROTOCOL_TYPE	0x883E
+
+/*
+ * gre_sre defines a Source route Entry. These are needed if packets
+ * should be routed over more than one tunnel hop by hop
+ */
+struct gre_sre {
+	u_int16_t sre_family;	/* address family */
+	u_char	sre_offset;	/* offset to first octet of active entry */
+	u_char	sre_length;	/* number of octets in the SRE.
+				   sre_lengthl==0 -> last entry. */
+	u_char	*sre_rtinfo;	/* the routing information */
+};
+
+struct greioctl {
+	int unit;
+	struct in_addr addr;
+};
+
+/* for mobile encaps */
+
+struct mobile_h {
+	u_int16_t proto;		/* protocol and S-bit */
+	u_int16_t hcrc;			/* header checksum */
+	u_int32_t odst;			/* original destination address */
+	u_int32_t osrc;			/* original source addr, if S-bit set */
+} __packed;
+
+struct mobip_h {
+	struct ip	mi;
+	struct mobile_h	mh;
+} __packed;
+
+
+#define MOB_HH_SIZ_S		(sizeof(struct mobile_h) - sizeof(u_int32_t))
+#define MOB_HH_SIZ_L		(sizeof(struct mobile_h))
+#define MOB_HH_SBIT	0x0080
+
+#define	GRE_TTL	30
+
+#endif /* _KERNEL */
+
+/*
+ * ioctls needed to manipulate the interface
+ */
+
+#define GRESADDRS	_IOW('i', 101, struct ifreq)
+#define GRESADDRD	_IOW('i', 102, struct ifreq)
+#define GREGADDRS	_IOWR('i', 103, struct ifreq)
+#define GREGADDRD	_IOWR('i', 104, struct ifreq)
+#define GRESPROTO	_IOW('i' , 105, struct ifreq)
+#define GREGPROTO	_IOWR('i', 106, struct ifreq)
+#define GREGKEY		_IOWR('i', 107, struct ifreq)
+#define GRESKEY		_IOW('i', 108, struct ifreq)
+
+#ifdef _KERNEL
+LIST_HEAD(gre_softc_head, gre_softc);
+extern struct mtx gre_mtx;
+extern struct gre_softc_head gre_softc_list;
+
+u_int16_t	gre_in_cksum(u_int16_t *, u_int);
+#endif /* _KERNEL */
+
+#endif