initial commit of Free's netipx w/ some changes.

ip<-->ipx encapsulations does not work still.
spx suspected to do too.

1 files changed, 208 insertions, 0 deletions

diff --git a/sys/netipx/spx.h b/sys/netipx/spx.h
new file mode 100644
index 00000000000..0448b72de1f
--- /dev/null
+++ b/sys/netipx/spx.h
@@ -0,0 +1,208 @@
+/*	$OpenBSD: spx.h,v 1.1 1996/08/16 09:16:03 mickey Exp $	*/
+/*	$NOWHERE: spx.h,v 1.2 1996/05/07 09:49:52 mickey Exp $	*/
+
+/*-
+ *
+ * Copyright (c) 1996 Michael Shalayeff
+ * Copyright (c) 1995, Mike Mitchell
+ * Copyright (c) 1984, 1985, 1986, 1987, 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.
+ *
+ *	@(#)spx.h
+ *
+ * from FreeBSD Id: spx.h,v 1.7 1996/01/30 22:58:51 mpp Exp
+ */
+
+#ifndef _NETIPX_SPX_H_
+#define	_NETIPX_SPX_H_
+
+#include <sys/queue.h>
+
+#define	XXX	__attribute__((packed));
+
+/*
+ * Definitions for IPX style Sequenced Packet Protocol
+ */
+
+struct spxhdr {
+	u_int8_t	spx_cc	XXX;	/* connection control */
+	u_int8_t	spx_dt	XXX;	/* datastream type */
+#define	SPX_SP		0x80		/* system packet */
+#define	SPX_SA		0x40		/* send acknowledgement */
+#define	SPX_OB		0x20		/* attention (out of band data) */
+#define	SPX_EM		0x10		/* end of message */
+	u_int16_t	spx_sid	XXX;	/* source connection identifier */
+	u_int16_t	spx_did	XXX;	/* destination connection identifier */
+	u_int16_t	spx_seq	XXX;	/* sequence number */
+	u_int16_t	spx_ack	XXX;	/* acknowledge number */
+	u_int16_t	spx_alo	XXX;	/* allocation number */
+};
+
+/*
+ * Definitions for NS(tm) Internet Datagram Protocol
+ * containing a Sequenced Packet Protocol packet.
+ */
+struct spx {
+	struct ipx	si_i XXX;
+	struct spxhdr 	si_s XXX;
+};
+
+#define SI(x)	((struct spx *)x)
+#define si_sum	si_i.ipx_sum
+#define si_len	si_i.ipx_len
+#define si_tc	si_i.ipx_tc
+#define si_pt	si_i.ipx_pt
+#define si_dna	si_i.ipx_dna
+#define si_sna	si_i.ipx_sna
+#define si_sport	si_i.ipx_sna.ipx_port
+#define si_cc	si_s.spx_cc
+#define si_dt	si_s.spx_dt
+#define si_sid	si_s.spx_sid
+#define si_did	si_s.spx_did
+#define si_seq	si_s.spx_seq
+#define si_ack	si_s.spx_ack
+#define si_alo	si_s.spx_alo
+
+struct spx_q {
+	TAILQ_ENTRY(spx_q)	list;
+	caddr_t	data;
+};
+
+/*
+ * SPX control block, one per connection
+ */
+struct spxpcb {
+	TAILQ_HEAD(, spx_q)	spxp_queue;
+	struct	ipxpcb	*s_ipxpcb;	/* backpointer to ipx pcb */
+	u_char	s_state;
+	u_char	s_flags;
+#define	SF_ACKNOW	0x01		/* Ack peer immediately */
+#define	SF_DELACK	0x02		/* Ack, but try to delay it */
+#define	SF_HI	0x04			/* Show headers on input */
+#define	SF_HO	0x08			/* Show headers on output */
+#define	SF_PI	0x10			/* Packet (datagram) interface */
+#define SF_WIN	0x20			/* Window info changed */
+#define SF_RXT	0x40			/* Rxt info changed */
+#define SF_RVD	0x80			/* Calling from read usrreq routine */
+	u_short s_mtu;			/* Max packet size for this stream */
+/* use sequence fields in headers to store sequence numbers for this
+   connection */
+	struct	ipx	*s_ipx;
+	struct	spxhdr	s_shdr;		/* prototype header to transmit */
+#define s_cc s_shdr.spx_cc		/* connection control (for EM bit) */
+#define s_dt s_shdr.spx_dt		/* datastream type */
+#define s_sid s_shdr.spx_sid		/* source connection identifier */
+#define s_did s_shdr.spx_did		/* destination connection identifier */
+#define s_seq s_shdr.spx_seq		/* sequence number */
+#define s_ack s_shdr.spx_ack		/* acknowledge number */
+#define s_alo s_shdr.spx_alo		/* allocation number */
+#define s_dport s_ipx->ipx_dna.ipx_port	/* where we are sending */
+	struct spxhdr s_rhdr;		/* last received header (in effect!)*/
+	u_short s_rack;			/* their acknowledge number */
+	u_short s_ralo;			/* their allocation number */
+	u_short s_smax;			/* highest packet # we have sent */
+	u_short	s_snxt;			/* which packet to send next */
+
+/* congestion control */
+#define	CUNIT	1024			/* scaling for ... */
+	int	s_cwnd;			/* Congestion-controlled window */
+					/* in packets * CUNIT */
+	short	s_swnd;			/* == tcp snd_wnd, in packets */
+	short	s_smxw;			/* == tcp max_sndwnd */
+					/* difference of two spx_seq's can be
+					   no bigger than a short */
+	u_short	s_swl1;			/* == tcp snd_wl1 */
+	u_short	s_swl2;			/* == tcp snd_wl2 */
+	int	s_cwmx;			/* max allowable cwnd */
+	int	s_ssthresh;		/* s_cwnd size threshold for
+					 * slow start exponential-to-
+					 * linear switch */
+/* transmit timing stuff
+ * srtt and rttvar are stored as fixed point, for convenience in smoothing.
+ * srtt has 3 bits to the right of the binary point, rttvar has 2.
+ */
+	short	s_idle;			/* time idle */
+#define	SPXT_NTIMERS	4
+	short	s_timer[SPXT_NTIMERS];	/* timers */
+	short	s_rxtshift;		/* log(2) of rexmt exp. backoff */
+	short	s_rxtcur;		/* current retransmit value */
+	u_short	s_rtseq;		/* packet being timed */
+	short	s_rtt;			/* timer for round trips */
+	short	s_srtt;			/* averaged timer */
+	short	s_rttvar;		/* variance in round trip time */
+	char	s_force;		/* which timer expired */
+	char	s_dupacks;		/* counter to intuit xmt loss */
+
+/* out of band data */
+	char	s_oobflags;
+#define SF_SOOB	0x08			/* sending out of band data */
+#define SF_IOOB 0x10			/* receiving out of band data */
+	char	s_iobc;			/* input characters */
+/* debug stuff */
+	u_short	s_want;			/* Last candidate for sending */
+	char	s_outx;			/* exit taken from spx_output */
+	char	s_inx;			/* exit taken from spx_input */
+	u_short	s_flags2;		/* more flags for testing */
+#define SF_NEWCALL	0x100		/* for new_recvmsg */
+#define SO_NEWCALL	10		/* for new_recvmsg */
+};
+
+#define	ipxtospxpcb(np)	((struct spxpcb *)(np)->ipxp_ppcb)
+#define	sotospxpcb(so)	(ipxtospxpcb(sotoipxpcb(so)))
+
+#ifdef _KERNEL
+
+void	spx_abort __P((struct ipxpcb *ipxp));
+struct spxpcb *spx_close __P((struct spxpcb *cb));
+void	*spx_ctlinput __P((int cmd, struct sockaddr *arg_as_sa, void *dummy));
+int	spx_ctloutput __P((int req, struct socket *so, int level, int name,
+			   struct mbuf **value));
+struct spxpcb *spx_disconnect __P((struct spxpcb *cb));
+struct spxpcb *spx_drop __P((struct spxpcb *cb, int errno));
+void	spx_fasttimo __P((void));
+void	spx_init __P((void));
+void	spx_input __P((struct mbuf *m, ...));
+int	spx_output __P((struct spxpcb *cb, struct mbuf *m0));
+void	spx_quench __P((struct ipxpcb *ipxp));
+int	spx_reass __P((struct spxpcb *cb, struct spx *si));
+void	spx_setpersist __P((struct spxpcb *cb));
+void	spx_slowtimo __P((void));
+void	spx_template __P((struct spxpcb *cb));
+struct spxpcb *spx_timers __P((struct spxpcb *cb, int timer));
+struct spxpcb *spx_usrclosed __P((struct spxpcb *cb));
+int	spx_usrreq __P((struct socket *so, int req, struct mbuf *m,
+			struct mbuf *nam, struct mbuf *controlp));
+int	spx_usrreq_sp __P((struct socket *so, int req, struct mbuf *m,
+			   struct mbuf *nam, struct mbuf *controlp));
+
+#endif /* _KERNEL */
+
+#endif /* !_NETIPX_SPX_H_ */