[unix-history] / usr / src / sys / netns / spp_var.h

/*
 * Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)spp_var.h	7.7 (Berkeley) %G%
 */

/*
 * 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
Commit	Line	Data
8ae0e4b4	1	/*
64b784d2	2	* Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
240edf1f	3	* All rights reserved.
8ae0e4b4	4	*
dbf0c423	5	* %sccs.include.redist.c%
240edf1f	6	*
dbf0c423	7	* @(#)spp_var.h 7.7 (Berkeley) %G%
8ae0e4b4	8	*/
cbf839b6 KS	9
	10	/*
	11	* Sp control block, one per connection
	12	*/
	13	struct sppcb {
	14	struct spidp_q s_q; /* queue for out-of-order receipt */
	15	struct nspcb s_nspcb; / backpointer to internet pcb */
	16	u_char s_state;
	17	u_char s_flags;
64b784d2 KS	18	#define SF_ACKNOW 0x01 /* Ack peer immediately */
	19	#define SF_DELACK 0x02 /* Ack, but try to delay it */
	20	#define SF_HI 0x04 /* Show headers on input */
	21	#define SF_HO 0x08 /* Show headers on output */
	22	#define SF_PI 0x10 /* Packet (datagram) interface */
	23	#define SF_WIN 0x20 /* Window info changed */
	24	#define SF_RXT 0x40 /* Rxt info changed */
	25	#define SF_RVD 0x80 /* Calling from read usrreq routine */
cbf839b6 KS	26	u_short s_mtu; /* Max packet size for this stream */
	27	/* use sequence fields in headers to store sequence numbers for this
	28	connection */
64b784d2 KS	29	struct idp *s_idp;
	30	struct sphdr s_shdr; /* prototype header to transmit */
	31	#define s_cc s_shdr.sp_cc /* connection control (for EM bit) */
	32	#define s_dt s_shdr.sp_dt /* datastream type */
	33	#define s_sid s_shdr.sp_sid /* source connection identifier */
	34	#define s_did s_shdr.sp_did /* destination connection identifier */
	35	#define s_seq s_shdr.sp_seq /* sequence number */
	36	#define s_ack s_shdr.sp_ack /* acknowledge number */
	37	#define s_alo s_shdr.sp_alo /* allocation number */
	38	#define s_dport s_idp->idp_dna.x_port /* where we are sending */
cbf839b6 KS	39	struct sphdr s_rhdr; /* last received header (in effect!)*/
	40	u_short s_rack; /* their acknowledge number */
	41	u_short s_ralo; /* their allocation number */
64b784d2 KS	42	u_short s_smax; /* highest packet # we have sent */
64b784d2 KS	43	u_short s_snxt; /* which packet to send next */
cbf839b6	44
64b784d2 KS	45	/* congestion control */
	46	#define CUNIT 1024 /* scaling for ... */
	47	int s_cwnd; /* Congestion-controlled window */
	48	/* in packets * CUNIT */
	49	short s_swnd; /* == tcp snd_wnd, in packets */
	50	short s_smxw; /* == tcp max_sndwnd */
	51	/* difference of two spp_seq's can be
	52	no bigger than a short */
	53	u_short s_swl1; /* == tcp snd_wl1 */
	54	u_short s_swl2; /* == tcp snd_wl2 */
	55	int s_cwmx; /* max allowable cwnd */
	56	int s_ssthresh; /* s_cwnd size threshhold for
	57	* slow start exponential-to-
	58	* linear switch */
	59	/* transmit timing stuff
	60	* srtt and rttvar are stored as fixed point, for convenience in smoothing.
	61	* srtt has 3 bits to the right of the binary point, rttvar has 2.
	62	*/
cbf839b6	63	short s_idle; /* time idle */
863250c1	64	short s_timer[SPPT_NTIMERS]; /* timers */
cbf839b6	65	short s_rxtshift; /* log(2) of rexmt exp. backoff */
64b784d2	66	short s_rxtcur; /* current retransmit value */
cbf839b6 KS	67	u_short s_rtseq; /* packet being timed */
	68	short s_rtt; /* timer for round trips */
	69	short s_srtt; /* averaged timer */
64b784d2	70	short s_rttvar; /* variance in round trip time */
cbf839b6	71	char s_force; /* which timer expired */
64b784d2	72	char s_dupacks; /* counter to intuit xmt loss */
cbf839b6 KS	73
	74	/* out of band data */
	75	char s_oobflags;
	76	#define SF_SOOB 0x08 /* sending out of band data */
	77	#define SF_IOOB 0x10 /* receiving out of band data */
	78	char s_iobc; /* input characters */
	79	/* debug stuff */
	80	u_short s_want; /* Last candidate for sending */
64b784d2 KS	81	char s_outx; /* exit taken from spp_output */
64b784d2 KS	82	char s_inx; /* exit taken from spp_input */
4dcdd98e KS	83	u_short s_flags2; /* more flags for testing */
	84	#define SF_NEWCALL 0x100 /* for new_recvmsg */
	85	#define SO_NEWCALL 10 /* for new_recvmsg */
cbf839b6 KS	86	};
	87
	88	#define nstosppcb(np) ((struct sppcb *)(np)->nsp_pcb)
	89	#define sotosppcb(so) (nstosppcb(sotonspcb(so)))
	90
64b784d2 KS	91	struct sppstat {
	92	long spps_connattempt; /* connections initiated */
	93	long spps_accepts; /* connections accepted */
	94	long spps_connects; /* connections established */
	95	long spps_drops; /* connections dropped */
	96	long spps_conndrops; /* embryonic connections dropped */
	97	long spps_closed; /* conn. closed (includes drops) */
	98	long spps_segstimed; /* segs where we tried to get rtt */
	99	long spps_rttupdated; /* times we succeeded */
	100	long spps_delack; /* delayed acks sent */
	101	long spps_timeoutdrop; /* conn. dropped in rxmt timeout */
	102	long spps_rexmttimeo; /* retransmit timeouts */
	103	long spps_persisttimeo; /* persist timeouts */
	104	long spps_keeptimeo; /* keepalive timeouts */
	105	long spps_keepprobe; /* keepalive probes sent */
	106	long spps_keepdrops; /* connections dropped in keepalive */
	107
	108	long spps_sndtotal; /* total packets sent */
	109	long spps_sndpack; /* data packets sent */
	110	long spps_sndbyte; /* data bytes sent */
	111	long spps_sndrexmitpack; /* data packets retransmitted */
	112	long spps_sndrexmitbyte; /* data bytes retransmitted */
	113	long spps_sndacks; /* ack-only packets sent */
	114	long spps_sndprobe; /* window probes sent */
	115	long spps_sndurg; /* packets sent with URG only */
	116	long spps_sndwinup; /* window update-only packets sent */
	117	long spps_sndctrl; /* control (SYN\|FIN\|RST) packets sent */
	118	long spps_sndvoid; /* couldn't find requested packet*/
	119
	120	long spps_rcvtotal; /* total packets received */
	121	long spps_rcvpack; /* packets received in sequence */
	122	long spps_rcvbyte; /* bytes received in sequence */
	123	long spps_rcvbadsum; /* packets received with ccksum errs */
	124	long spps_rcvbadoff; /* packets received with bad offset */
	125	long spps_rcvshort; /* packets received too short */
	126	long spps_rcvduppack; /* duplicate-only packets received */
	127	long spps_rcvdupbyte; /* duplicate-only bytes received */
	128	long spps_rcvpartduppack; /* packets with some duplicate data */
	129	long spps_rcvpartdupbyte; /* dup. bytes in part-dup. packets */
	130	long spps_rcvoopack; /* out-of-order packets received */
	131	long spps_rcvoobyte; /* out-of-order bytes received */
	132	long spps_rcvpackafterwin; /* packets with data after window */
	133	long spps_rcvbyteafterwin; /* bytes rcvd after window */
	134	long spps_rcvafterclose; /* packets rcvd after "close" */
	135	long spps_rcvwinprobe; /* rcvd window probe packets */
	136	long spps_rcvdupack; /* rcvd duplicate acks */
	137	long spps_rcvacktoomuch; /* rcvd acks for unsent data */
	138	long spps_rcvackpack; /* rcvd ack packets */
	139	long spps_rcvackbyte; /* bytes acked by rcvd acks */
	140	long spps_rcvwinupd; /* rcvd window update packets */
	141	};
cbf839b6 KS	142	struct spp_istat {
	143	short hdrops;
	144	short badsum;
	145	short badlen;
	146	short slotim;
	147	short fastim;
	148	short nonucn;
	149	short noconn;
	150	short notme;
	151	short wrncon;
	152	short bdreas;
	153	short gonawy;
f1f25520 KS	154	short notyet;
f1f25520 KS	155	short lstdup;
64b784d2	156	struct sppstat newstats;
cbf839b6 KS	157	};
	158
	159	#ifdef KERNEL
	160	struct spp_istat spp_istat;
64b784d2 KS	161
	162	/* Following was struct sppstat sppstat; */
	163	#ifndef sppstat
	164	#define sppstat spp_istat.newstats
	165	#endif
	166
cbf839b6 KS	167	u_short spp_iss;
	168	extern struct sppcb spp_close(), spp_disconnect(),
	169	spp_usrclosed(), spp_timers(), *spp_drop();
	170	#endif
	171
	172	#define SPP_ISSINCR 128
	173	/*
	174	* SPP sequence numbers are 16 bit integers operated
	175	* on with modular arithmetic. These macros can be
	176	* used to compare such integers.
	177	*/
64b784d2 KS	178	#ifdef sun
	179	short xnsCbug;
	180	#define SSEQ_LT(a,b) ((xnsCbug = (short)((a)-(b))) < 0)
	181	#define SSEQ_LEQ(a,b) ((xnsCbug = (short)((a)-(b))) <= 0)
	182	#define SSEQ_GT(a,b) ((xnsCbug = (short)((a)-(b))) > 0)
	183	#define SSEQ_GEQ(a,b) ((xnsCbug = (short)((a)-(b))) >= 0)
	184	#else
cbf839b6 KS	185	#define SSEQ_LT(a,b) (((short)((a)-(b))) < 0)
	186	#define SSEQ_LEQ(a,b) (((short)((a)-(b))) <= 0)
	187	#define SSEQ_GT(a,b) (((short)((a)-(b))) > 0)
	188	#define SSEQ_GEQ(a,b) (((short)((a)-(b))) >= 0)
64b784d2	189	#endif