BSD 4.4 Lite Kernel Sources

1 files changed, 238 insertions, 0 deletions

diff --git a/sys/netinet/in.h b/sys/netinet/in.h
new file mode 100644
index 0000000..1ce9948
--- /dev/null
+++ b/sys/netinet/in.h
@@ -0,0 +1,238 @@
+/*
+ * Copyright (c) 1982, 1986, 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	@(#)in.h	8.3 (Berkeley) 1/3/94
+ */
+
+/*
+ * Constants and structures defined by the internet system,
+ * Per RFC 790, September 1981, and numerous additions.
+ */
+
+/*
+ * Protocols
+ */
+#define	IPPROTO_IP		0		/* dummy for IP */
+#define	IPPROTO_ICMP		1		/* control message protocol */
+#define	IPPROTO_IGMP		2		/* group mgmt protocol */
+#define	IPPROTO_GGP		3		/* gateway^2 (deprecated) */
+#define	IPPROTO_TCP		6		/* tcp */
+#define	IPPROTO_EGP		8		/* exterior gateway protocol */
+#define	IPPROTO_PUP		12		/* pup */
+#define	IPPROTO_UDP		17		/* user datagram protocol */
+#define	IPPROTO_IDP		22		/* xns idp */
+#define	IPPROTO_TP		29 		/* tp-4 w/ class negotiation */
+#define	IPPROTO_EON		80		/* ISO cnlp */
+#define	IPPROTO_ENCAP		98		/* encapsulation header */
+
+#define	IPPROTO_RAW		255		/* raw IP packet */
+#define	IPPROTO_MAX		256
+
+
+/*
+ * Local port number conventions:
+ * Ports < IPPORT_RESERVED are reserved for
+ * privileged processes (e.g. root).
+ * Ports > IPPORT_USERRESERVED are reserved
+ * for servers, not necessarily privileged.
+ */
+#define	IPPORT_RESERVED		1024
+#define	IPPORT_USERRESERVED	5000
+
+/*
+ * Internet address (a structure for historical reasons)
+ */
+struct in_addr {
+	u_long s_addr;
+};
+
+/*
+ * Definitions of bits in internet address integers.
+ * On subnets, the decomposition of addresses to host and net parts
+ * is done according to subnet mask, not the masks here.
+ */
+#define	IN_CLASSA(i)		(((long)(i) & 0x80000000) == 0)
+#define	IN_CLASSA_NET		0xff000000
+#define	IN_CLASSA_NSHIFT	24
+#define	IN_CLASSA_HOST		0x00ffffff
+#define	IN_CLASSA_MAX		128
+
+#define	IN_CLASSB(i)		(((long)(i) & 0xc0000000) == 0x80000000)
+#define	IN_CLASSB_NET		0xffff0000
+#define	IN_CLASSB_NSHIFT	16
+#define	IN_CLASSB_HOST		0x0000ffff
+#define	IN_CLASSB_MAX		65536
+
+#define	IN_CLASSC(i)		(((long)(i) & 0xe0000000) == 0xc0000000)
+#define	IN_CLASSC_NET		0xffffff00
+#define	IN_CLASSC_NSHIFT	8
+#define	IN_CLASSC_HOST		0x000000ff
+
+#define	IN_CLASSD(i)		(((long)(i) & 0xf0000000) == 0xe0000000)
+#define	IN_CLASSD_NET		0xf0000000	/* These ones aren't really */
+#define	IN_CLASSD_NSHIFT	28		/* net and host fields, but */
+#define	IN_CLASSD_HOST		0x0fffffff	/* routing needn't know.    */
+#define	IN_MULTICAST(i)		IN_CLASSD(i)
+
+#define	IN_EXPERIMENTAL(i)	(((long)(i) & 0xf0000000) == 0xf0000000)
+#define	IN_BADCLASS(i)		(((long)(i) & 0xf0000000) == 0xf0000000)
+
+#define	INADDR_ANY		(u_long)0x00000000
+#define	INADDR_BROADCAST	(u_long)0xffffffff	/* must be masked */
+#ifndef KERNEL
+#define	INADDR_NONE		0xffffffff		/* -1 return */
+#endif
+
+#define	INADDR_UNSPEC_GROUP	(u_long)0xe0000000	/* 224.0.0.0 */
+#define	INADDR_ALLHOSTS_GROUP	(u_long)0xe0000001	/* 224.0.0.1 */
+#define	INADDR_MAX_LOCAL_GROUP	(u_long)0xe00000ff	/* 224.0.0.255 */
+
+#define	IN_LOOPBACKNET		127			/* official! */
+
+/*
+ * Socket address, internet style.
+ */
+struct sockaddr_in {
+	u_char	sin_len;
+	u_char	sin_family;
+	u_short	sin_port;
+	struct	in_addr sin_addr;
+	char	sin_zero[8];
+};
+
+/*
+ * Structure used to describe IP options.
+ * Used to store options internally, to pass them to a process,
+ * or to restore options retrieved earlier.
+ * The ip_dst is used for the first-hop gateway when using a source route
+ * (this gets put into the header proper).
+ */
+struct ip_opts {
+	struct	in_addr ip_dst;		/* first hop, 0 w/o src rt */
+	char	ip_opts[40];		/* actually variable in size */
+};
+
+/*
+ * Options for use with [gs]etsockopt at the IP level.
+ * First word of comment is data type; bool is stored in int.
+ */
+#define	IP_OPTIONS		1    /* buf/ip_opts; set/get IP options */
+#define	IP_HDRINCL		2    /* int; header is included with data */
+#define	IP_TOS			3    /* int; IP type of service and preced. */
+#define	IP_TTL			4    /* int; IP time to live */
+#define	IP_RECVOPTS		5    /* bool; receive all IP opts w/dgram */
+#define	IP_RECVRETOPTS		6    /* bool; receive IP opts for response */
+#define	IP_RECVDSTADDR		7    /* bool; receive IP dst addr w/dgram */
+#define	IP_RETOPTS		8    /* ip_opts; set/get IP options */
+#define	IP_MULTICAST_IF		9    /* u_char; set/get IP multicast i/f  */
+#define	IP_MULTICAST_TTL	10   /* u_char; set/get IP multicast ttl */
+#define	IP_MULTICAST_LOOP	11   /* u_char; set/get IP multicast loopback */
+#define	IP_ADD_MEMBERSHIP	12   /* ip_mreq; add an IP group membership */
+#define	IP_DROP_MEMBERSHIP	13   /* ip_mreq; drop an IP group membership */
+
+/*
+ * Defaults and limits for options
+ */
+#define	IP_DEFAULT_MULTICAST_TTL  1	/* normally limit m'casts to 1 hop  */
+#define	IP_DEFAULT_MULTICAST_LOOP 1	/* normally hear sends if a member  */
+#define	IP_MAX_MEMBERSHIPS	20	/* per socket; must fit in one mbuf */
+
+/*
+ * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
+ */
+struct ip_mreq {
+	struct	in_addr imr_multiaddr;	/* IP multicast address of group */
+	struct	in_addr imr_interface;	/* local IP address of interface */
+};
+
+/*
+ * Definitions for inet sysctl operations.
+ *
+ * Third level is protocol number.
+ * Fourth level is desired variable within that protocol.
+ */
+#define	IPPROTO_MAXID	(IPPROTO_IDP + 1)	/* don't list to IPPROTO_MAX */
+
+#define	CTL_IPPROTO_NAMES { \
+	{ "ip", CTLTYPE_NODE }, \
+	{ "icmp", CTLTYPE_NODE }, \
+	{ "igmp", CTLTYPE_NODE }, \
+	{ "ggp", CTLTYPE_NODE }, \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ "tcp", CTLTYPE_NODE }, \
+	{ 0, 0 }, \
+	{ "egp", CTLTYPE_NODE }, \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ "pup", CTLTYPE_NODE }, \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ "udp", CTLTYPE_NODE }, \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ "idp", CTLTYPE_NODE }, \
+}
+
+/*
+ * Names for IP sysctl objects
+ */
+#define	IPCTL_FORWARDING	1	/* act as router */
+#define	IPCTL_SENDREDIRECTS	2	/* may send redirects when forwarding */
+#define	IPCTL_DEFTTL		3	/* default TTL */
+#ifdef notyet
+#define	IPCTL_DEFMTU		4	/* default MTU */
+#endif
+#define	IPCTL_MAXID		5
+
+#define	IPCTL_NAMES { \
+	{ 0, 0 }, \
+	{ "forwarding", CTLTYPE_INT }, \
+	{ "redirect", CTLTYPE_INT }, \
+	{ "ttl", CTLTYPE_INT }, \
+	{ "mtu", CTLTYPE_INT }, \
+}
+
+
+#ifdef KERNEL
+int	 in_broadcast __P((struct in_addr, struct ifnet *));
+int	 in_canforward __P((struct in_addr));
+int	 in_cksum __P((struct mbuf *, int));
+int	 in_localaddr __P((struct in_addr));
+u_long	 in_netof __P((struct in_addr));
+void	 in_socktrim __P((struct sockaddr_in *));
+#endif