/* * 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_var.h */ #ifndef _NETIPX_SPX_VAR_H_ #define _NETIPX_SPX_VAR_H_ /* * SPX control block, one per connection */ struct spxpcb { struct spx_q s_q; /* queue for out-of-order receipt */ struct ipxpcb *s_ipxpcb; /* 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 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.x_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 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[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_pcb) #define sotospxpcb(so) (ipxtospxpcb(sotoipxpcb(so))) struct spxstat { long spxs_connattempt; /* connections initiated */ long spxs_accepts; /* connections accepted */ long spxs_connects; /* connections established */ long spxs_drops; /* connections dropped */ long spxs_conndrops; /* embryonic connections dropped */ long spxs_closed; /* conn. closed (includes drops) */ long spxs_segstimed; /* segs where we tried to get rtt */ long spxs_rttupdated; /* times we succeeded */ long spxs_delack; /* delayed acks sent */ long spxs_timeoutdrop; /* conn. dropped in rxmt timeout */ long spxs_rexmttimeo; /* retransmit timeouts */ long spxs_persisttimeo; /* persist timeouts */ long spxs_keeptimeo; /* keepalive timeouts */ long spxs_keepprobe; /* keepalive probes sent */ long spxs_keepdrops; /* connections dropped in keepalive */ long spxs_sndtotal; /* total packets sent */ long spxs_sndpack; /* data packets sent */ long spxs_sndbyte; /* data bytes sent */ long spxs_sndrexmitpack; /* data packets retransmitted */ long spxs_sndrexmitbyte; /* data bytes retransmitted */ long spxs_sndacks; /* ack-only packets sent */ long spxs_sndprobe; /* window probes sent */ long spxs_sndurg; /* packets sent with URG only */ long spxs_sndwinup; /* window update-only packets sent */ long spxs_sndctrl; /* control (SYN|FIN|RST) packets sent */ long spxs_sndvoid; /* couldn't find requested packet*/ long spxs_rcvtotal; /* total packets received */ long spxs_rcvpack; /* packets received in sequence */ long spxs_rcvbyte; /* bytes received in sequence */ long spxs_rcvbadsum; /* packets received with ccksum errs */ long spxs_rcvbadoff; /* packets received with bad offset */ long spxs_rcvshort; /* packets received too short */ long spxs_rcvduppack; /* duplicate-only packets received */ long spxs_rcvdupbyte; /* duplicate-only bytes received */ long spxs_rcvpartduppack; /* packets with some duplicate data */ long spxs_rcvpartdupbyte; /* dup. bytes in part-dup. packets */ long spxs_rcvoopack; /* out-of-order packets received */ long spxs_rcvoobyte; /* out-of-order bytes received */ long spxs_rcvpackafterwin; /* packets with data after window */ long spxs_rcvbyteafterwin; /* bytes rcvd after window */ long spxs_rcvafterclose; /* packets rcvd after "close" */ long spxs_rcvwinprobe; /* rcvd window probe packets */ long spxs_rcvdupack; /* rcvd duplicate acks */ long spxs_rcvacktoomuch; /* rcvd acks for unsent data */ long spxs_rcvackpack; /* rcvd ack packets */ long spxs_rcvackbyte; /* bytes acked by rcvd acks */ long spxs_rcvwinupd; /* rcvd window update packets */ }; struct spx_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 spxstat newstats; }; #ifdef KERNEL extern struct spx_istat spx_istat; extern u_short spx_iss; /* Following was struct spxstat spxstat; */ #ifndef spxstat #define spxstat spx_istat.newstats #endif #endif #define SPX_ISSINCR 128 /* * spx sequence numbers are 16 bit integers operated * on with modular arithmetic. These macros can be * used to compare such integers. */ #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