This is libstand; a support library for standalone executables (eg. bootstrap

modules).
Obtained from: NetBSD, with some architectural changes and many additions.

1 files changed, 263 insertions, 0 deletions

diff --git a/lib/libstand/if_ether.h b/lib/libstand/if_ether.h
new file mode 100644
index 0000000..a9bc891
--- /dev/null
+++ b/lib/libstand/if_ether.h
@@ -0,0 +1,263 @@
+/*	$NetBSD: if_ether.h,v 1.25 1997/01/17 17:06:06 mikel Exp $	*/
+
+/*
+ * Copyright (c) 1982, 1986, 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.
+ *
+ *	@(#)if_ether.h	8.1 (Berkeley) 6/10/93
+ */
+
+/*
+ * Ethernet address - 6 octets
+ * this is only used by the ethers(3) functions.
+ */
+struct ether_addr {
+	u_int8_t ether_addr_octet[6];
+};
+
+/*
+ * Structure of a 10Mb/s Ethernet header.
+ */
+#define	ETHER_ADDR_LEN	6
+
+struct	ether_header {
+	u_int8_t  ether_dhost[ETHER_ADDR_LEN];
+	u_int8_t  ether_shost[ETHER_ADDR_LEN];
+	u_int16_t ether_type;
+};
+
+#define	ETHERTYPE_PUP		0x0200	/* PUP protocol */
+#define	ETHERTYPE_IP		0x0800	/* IP protocol */
+#define	ETHERTYPE_ARP		0x0806	/* address resolution protocol */
+#define	ETHERTYPE_REVARP	0x8035	/* reverse addr resolution protocol */
+
+/*
+ * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
+ * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
+ * by an ETHER type (as given above) and then the (variable-length) header.
+ */
+#define	ETHERTYPE_TRAIL		0x1000		/* Trailer packet */
+#define	ETHERTYPE_NTRAILER	16
+
+#define	ETHER_IS_MULTICAST(addr) (*(addr) & 0x01) /* is address mcast/bcast? */
+
+#define	ETHERMTU	1500
+#define	ETHERMIN	(60-14)
+
+#ifdef _KERNEL
+/*
+ * Macro to map an IP multicast address to an Ethernet multicast address.
+ * The high-order 25 bits of the Ethernet address are statically assigned,
+ * and the low-order 23 bits are taken from the low end of the IP address.
+ */
+#define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr)				\
+	/* struct in_addr *ipaddr; */					\
+	/* u_int8_t enaddr[ETHER_ADDR_LEN]; */				\
+{									\
+	(enaddr)[0] = 0x01;						\
+	(enaddr)[1] = 0x00;						\
+	(enaddr)[2] = 0x5e;						\
+	(enaddr)[3] = ((u_int8_t *)ipaddr)[1] & 0x7f;			\
+	(enaddr)[4] = ((u_int8_t *)ipaddr)[2];				\
+	(enaddr)[5] = ((u_int8_t *)ipaddr)[3];				\
+}
+#endif
+
+/*
+ * Ethernet Address Resolution Protocol.
+ *
+ * See RFC 826 for protocol description.  Structure below is adapted
+ * to resolving internet addresses.  Field names used correspond to 
+ * RFC 826.
+ */
+struct	ether_arp {
+	struct	 arphdr ea_hdr;			/* fixed-size header */
+	u_int8_t arp_sha[ETHER_ADDR_LEN];	/* sender hardware address */
+	u_int8_t arp_spa[4];			/* sender protocol address */
+	u_int8_t arp_tha[ETHER_ADDR_LEN];	/* target hardware address */
+	u_int8_t arp_tpa[4];			/* target protocol address */
+};
+#define	arp_hrd	ea_hdr.ar_hrd
+#define	arp_pro	ea_hdr.ar_pro
+#define	arp_hln	ea_hdr.ar_hln
+#define	arp_pln	ea_hdr.ar_pln
+#define	arp_op	ea_hdr.ar_op
+
+/*
+ * Structure shared between the ethernet driver modules and
+ * the address resolution code.  For example, each ec_softc or il_softc
+ * begins with this structure.
+ */
+struct	arpcom {
+	struct	 ifnet ac_if;			/* network-visible interface */
+	u_int8_t ac_enaddr[ETHER_ADDR_LEN];	/* ethernet hardware address */
+	char	 ac__pad[2];			/* be nice to m68k ports */
+	LIST_HEAD(, ether_multi) ac_multiaddrs;	/* list of ether multicast addrs */
+	int	 ac_multicnt;			/* length of ac_multiaddrs list */
+};
+
+struct llinfo_arp {
+	LIST_ENTRY(llinfo_arp) la_list;
+	struct	rtentry *la_rt;
+	struct	mbuf *la_hold;		/* last packet until resolved/timeout */
+	long	la_asked;		/* last time we QUERIED for this addr */
+#define la_timer la_rt->rt_rmx.rmx_expire /* deletion time in seconds */
+};
+
+struct sockaddr_inarp {
+	u_int8_t  sin_len;
+	u_int8_t  sin_family;
+	u_int16_t sin_port;
+	struct	  in_addr sin_addr;
+	struct	  in_addr sin_srcaddr;
+	u_int16_t sin_tos;
+	u_int16_t sin_other;
+#define SIN_PROXY 1
+};
+
+/*
+ * IP and ethernet specific routing flags
+ */
+#define	RTF_USETRAILERS	RTF_PROTO1	/* use trailers */
+#define	RTF_ANNOUNCE	RTF_PROTO2	/* announce new arp entry */
+
+#ifdef	_KERNEL
+u_int8_t etherbroadcastaddr[ETHER_ADDR_LEN];
+u_int8_t ether_ipmulticast_min[ETHER_ADDR_LEN];
+u_int8_t ether_ipmulticast_max[ETHER_ADDR_LEN];
+struct	ifqueue arpintrq;
+
+void	arpwhohas(struct arpcom *, struct in_addr *);
+void	arpintr(void);
+int	arpresolve(struct arpcom *,
+	    struct rtentry *, struct mbuf *, struct sockaddr *, u_char *);
+void	arp_ifinit(struct arpcom *, struct ifaddr *);
+void	arp_rtrequest(int, struct rtentry *, struct sockaddr *);
+
+int	ether_addmulti(struct ifreq *, struct arpcom *);
+int	ether_delmulti(struct ifreq *, struct arpcom *);
+#endif /* _KERNEL */
+
+/*
+ * Ethernet multicast address structure.  There is one of these for each
+ * multicast address or range of multicast addresses that we are supposed
+ * to listen to on a particular interface.  They are kept in a linked list,
+ * rooted in the interface's arpcom structure.  (This really has nothing to
+ * do with ARP, or with the Internet address family, but this appears to be
+ * the minimally-disrupting place to put it.)
+ */
+struct ether_multi {
+	u_int8_t enm_addrlo[ETHER_ADDR_LEN]; /* low  or only address of range */
+	u_int8_t enm_addrhi[ETHER_ADDR_LEN]; /* high or only address of range */
+	struct	 arpcom *enm_ac;	/* back pointer to arpcom */
+	u_int	 enm_refcount;		/* no. claims to this addr/range */
+	LIST_ENTRY(ether_multi) enm_list;
+};
+
+/*
+ * Structure used by macros below to remember position when stepping through
+ * all of the ether_multi records.
+ */
+struct ether_multistep {
+	struct ether_multi  *e_enm;
+};
+
+/*
+ * Macro for looking up the ether_multi record for a given range of Ethernet
+ * multicast addresses connected to a given arpcom structure.  If no matching
+ * record is found, "enm" returns NULL.
+ */
+#define ETHER_LOOKUP_MULTI(addrlo, addrhi, ac, enm)			\
+	/* u_int8_t addrlo[ETHER_ADDR_LEN]; */				\
+	/* u_int8_t addrhi[ETHER_ADDR_LEN]; */				\
+	/* struct arpcom *ac; */					\
+	/* struct ether_multi *enm; */					\
+{									\
+	for ((enm) = (ac)->ac_multiaddrs.lh_first;			\
+	    (enm) != NULL &&						\
+	    (bcmp((enm)->enm_addrlo, (addrlo), ETHER_ADDR_LEN) != 0 ||	\
+	     bcmp((enm)->enm_addrhi, (addrhi), ETHER_ADDR_LEN) != 0);	\
+		(enm) = (enm)->enm_list.le_next);			\
+}
+
+/*
+ * Macro to step through all of the ether_multi records, one at a time.
+ * The current position is remembered in "step", which the caller must
+ * provide.  ETHER_FIRST_MULTI(), below, must be called to initialize "step"
+ * and get the first record.  Both macros return a NULL "enm" when there
+ * are no remaining records.
+ */
+#define ETHER_NEXT_MULTI(step, enm) \
+	/* struct ether_multistep step; */  \
+	/* struct ether_multi *enm; */  \
+{ \
+	if (((enm) = (step).e_enm) != NULL) \
+		(step).e_enm = (enm)->enm_list.le_next; \
+}
+
+#define ETHER_FIRST_MULTI(step, ac, enm) \
+	/* struct ether_multistep step; */ \
+	/* struct arpcom *ac; */ \
+	/* struct ether_multi *enm; */ \
+{ \
+	(step).e_enm = (ac)->ac_multiaddrs.lh_first; \
+	ETHER_NEXT_MULTI((step), (enm)); \
+}
+
+#ifdef _KERNEL
+void arp_rtrequest(int, struct rtentry *, struct sockaddr *);
+int arpresolve(struct arpcom *, struct rtentry *, struct mbuf *,
+		    struct sockaddr *, u_char *);
+void arpintr(void);
+int arpioctl(u_long, caddr_t);
+void arp_ifinit(struct arpcom *, struct ifaddr *);
+void revarpinput(struct mbuf *);
+void in_revarpinput(struct mbuf *);
+void revarprequest(struct ifnet *);
+int revarpwhoarewe(struct ifnet *, struct in_addr *, struct in_addr *);
+int revarpwhoami(struct in_addr *, struct ifnet *);
+int db_show_arptab(void);
+#endif
+
+/*
+ * Prototype ethers(3) functions.
+ */
+#ifndef _KERNEL
+#include <sys/cdefs.h>
+__BEGIN_DECLS
+char *	ether_ntoa(struct ether_addr *);
+struct ether_addr *
+	ether_aton(char *);
+int	ether_ntohost(char *, struct ether_addr *);
+int	ether_hostton(char *, struct ether_addr *);
+int	ether_line(char *, struct ether_addr *, char *);
+__END_DECLS
+#endif