diff options
Diffstat (limited to 'sys/netns/spp_var.h')
| -rw-r--r-- | sys/netns/spp_var.h | 217 |
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 |