mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
222 lines
8.9 KiB
C
222 lines
8.9 KiB
C
/*
|
|
* 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
|
|
* $Id: spp_var.h,v 1.2 1994/08/02 07:52:01 davidg Exp $
|
|
*/
|
|
|
|
#ifndef _NETNS_SPP_VAR_H_
|
|
#define _NETNS_SPP_VAR_H_
|
|
|
|
/*
|
|
* 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
|
|
|
|
#endif
|