initial import of NetBSD tree

1 files changed, 217 insertions, 0 deletions

diff --git a/sys/netns/spp_var.h b/sys/netns/spp_var.h
new file mode 100644
index 00000000000..51104d4f7d5
--- /dev/null
+++ b/sys/netns/spp_var.h
@@ -0,0 +1,217 @@
+/*	$NetBSD: spp_var.h,v 1.5 1995/03/26 20:36:23 jtc Exp $	*/
+
+/*
+ * 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.
+ *
+ *	@(#)spp_var.h	8.1 (Berkeley) 6/10/93
+ */
+
+/*
+ * Sp control block, one per connection
+ */
+struct sppcb {
+	struct	spidp_q	s_q;		/* queue for out-of-order receipt */
+	struct	nspcb	*s_nspcb;	/* backpointer to internet 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	idp	*s_idp;
+	struct	sphdr	s_shdr;		/* prototype header to transmit */
+#define s_cc s_shdr.sp_cc		/* connection control (for EM bit) */
+#define s_dt s_shdr.sp_dt		/* datastream type */
+#define s_sid s_shdr.sp_sid		/* source connection identifier */
+#define s_did s_shdr.sp_did		/* destination connection identifier */
+#define s_seq s_shdr.sp_seq		/* sequence number */
+#define s_ack s_shdr.sp_ack		/* acknowledge number */
+#define s_alo s_shdr.sp_alo		/* allocation number */
+#define s_dport s_idp->idp_dna.x_port	/* where we are sending */
+	struct sphdr 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 spp_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 threshhold 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 */
+	short	s_timer[SPPT_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 spp_output */
+	char	s_inx;			/* exit taken from spp_input */
+	u_short	s_flags2;		/* more flags for testing */
+#define SF_NEWCALL	0x100		/* for new_recvmsg */
+#define SO_NEWCALL	10		/* for new_recvmsg */
+};
+
+#define	nstosppcb(np)	((struct sppcb *)(np)->nsp_pcb)
+#define	sotosppcb(so)	(nstosppcb(sotonspcb(so)))
+
+struct	sppstat {
+	long	spps_connattempt;	/* connections initiated */
+	long	spps_accepts;		/* connections accepted */
+	long	spps_connects;		/* connections established */
+	long	spps_drops;		/* connections dropped */
+	long	spps_conndrops;		/* embryonic connections dropped */
+	long	spps_closed;		/* conn. closed (includes drops) */
+	long	spps_segstimed;		/* segs where we tried to get rtt */
+	long	spps_rttupdated;	/* times we succeeded */
+	long	spps_delack;		/* delayed acks sent */
+	long	spps_timeoutdrop;	/* conn. dropped in rxmt timeout */
+	long	spps_rexmttimeo;	/* retransmit timeouts */
+	long	spps_persisttimeo;	/* persist timeouts */
+	long	spps_keeptimeo;		/* keepalive timeouts */
+	long	spps_keepprobe;		/* keepalive probes sent */
+	long	spps_keepdrops;		/* connections dropped in keepalive */
+
+	long	spps_sndtotal;		/* total packets sent */
+	long	spps_sndpack;		/* data packets sent */
+	long	spps_sndbyte;		/* data bytes sent */
+	long	spps_sndrexmitpack;	/* data packets retransmitted */
+	long	spps_sndrexmitbyte;	/* data bytes retransmitted */
+	long	spps_sndacks;		/* ack-only packets sent */
+	long	spps_sndprobe;		/* window probes sent */
+	long	spps_sndurg;		/* packets sent with URG only */
+	long	spps_sndwinup;		/* window update-only packets sent */
+	long	spps_sndctrl;		/* control (SYN|FIN|RST) packets sent */
+	long	spps_sndvoid;		/* couldn't find requested packet*/
+
+	long	spps_rcvtotal;		/* total packets received */
+	long	spps_rcvpack;		/* packets received in sequence */
+	long	spps_rcvbyte;		/* bytes received in sequence */
+	long	spps_rcvbadsum;		/* packets received with ccksum errs */
+	long	spps_rcvbadoff;		/* packets received with bad offset */
+	long	spps_rcvshort;		/* packets received too short */
+	long	spps_rcvduppack;	/* duplicate-only packets received */
+	long	spps_rcvdupbyte;	/* duplicate-only bytes received */
+	long	spps_rcvpartduppack;	/* packets with some duplicate data */
+	long	spps_rcvpartdupbyte;	/* dup. bytes in part-dup. packets */
+	long	spps_rcvoopack;		/* out-of-order packets received */
+	long	spps_rcvoobyte;		/* out-of-order bytes received */
+	long	spps_rcvpackafterwin;	/* packets with data after window */
+	long	spps_rcvbyteafterwin;	/* bytes rcvd after window */
+	long	spps_rcvafterclose;	/* packets rcvd after "close" */
+	long	spps_rcvwinprobe;	/* rcvd window probe packets */
+	long	spps_rcvdupack;		/* rcvd duplicate acks */
+	long	spps_rcvacktoomuch;	/* rcvd acks for unsent data */
+	long	spps_rcvackpack;	/* rcvd ack packets */
+	long	spps_rcvackbyte;	/* bytes acked by rcvd acks */
+	long	spps_rcvwinupd;		/* rcvd window update packets */
+};
+struct	spp_istat {
+	short	hdrops;
+	short	badsum;
+	short	badlen;
+	short	slotim;
+	short	fastim;
+	short	nonucn;
+	short	noconn;
+	short	notme;
+	short	wrncon;
+	short	bdreas;
+	short	gonawy;
+	short	notyet;
+	short	lstdup;
+	struct sppstat newstats;
+};
+
+#ifdef _KERNEL
+struct spp_istat spp_istat;
+
+/* Following was struct sppstat sppstat; */
+#ifndef sppstat
+#define sppstat spp_istat.newstats
+#endif
+
+u_short spp_iss;
+extern struct sppcb *spp_close(), *spp_disconnect(),
+	*spp_usrclosed(), *spp_timers(), *spp_drop();
+#endif
+
+#define	SPP_ISSINCR	128
+/*
+ * SPP sequence numbers are 16 bit integers operated
+ * on with modular arithmetic.  These macros can be
+ * used to compare such integers.
+ */
+#ifdef sun
+short xnsCbug;
+#define	SSEQ_LT(a,b)	((xnsCbug = (short)((a)-(b))) < 0)
+#define	SSEQ_LEQ(a,b)	((xnsCbug = (short)((a)-(b))) <= 0)
+#define	SSEQ_GT(a,b)	((xnsCbug = (short)((a)-(b))) > 0)
+#define	SSEQ_GEQ(a,b)	((xnsCbug = (short)((a)-(b))) >= 0)
+#else
+#define	SSEQ_LT(a,b)	(((short)((a)-(b))) < 0)
+#define	SSEQ_LEQ(a,b)	(((short)((a)-(b))) <= 0)
+#define	SSEQ_GT(a,b)	(((short)((a)-(b))) > 0)
+#define	SSEQ_GEQ(a,b)	(((short)((a)-(b))) >= 0)
+#endif