8c7e2b93a0
Use the MAC address of an interface for the host part of an IPX address and not the MAC address of the first interface for every IPX address. This is more inline with the way others like Novell do it. Mostly Submitted by: "Serge A. Babkin" <babkin@hq.icb.chel.su> Take out the error messages (the ip icmp equivalent) with #ifdef IPXERRORMSGS. This is bogus and as far as I could figure out IPX don't have anything like it. This is a leftover from its XNS heritage. If nobody complains, I will take it out completely in a few weeks. Add some more ipxstat statistics counters. Make ipxprintfs a sysctl variable and off by default. Add IPX Netbios "routing" support. This is off by default and can be switched on with a sysctl knob. General code cleanup to at least use the same style throughout the IPX code, but also be more style(9) conformant. Also make a lot of functions static. If I don't get any complaints I'll bring all of this over to the 2.2 tree in a few weeks.
125 lines
5.3 KiB
C
125 lines
5.3 KiB
C
/*
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* Copyright (c) 1995, Mike Mitchell
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* Copyright (c) 1982, 1986, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)spx_timer.h
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*
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* $Id: spx_timer.h,v 1.7 1997/02/22 09:41:59 peter Exp $
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*/
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#ifndef _NETIPX_SPX_TIMER_H_
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#define _NETIPX_SPX_TIMER_H_
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/*
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* Definitions of the SPX timers. These timers are counted
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* down PR_SLOWHZ times a second.
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*/
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#define SPXT_REXMT 0 /* retransmit */
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#define SPXT_PERSIST 1 /* retransmit persistence */
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#define SPXT_KEEP 2 /* keep alive */
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#define SPXT_2MSL 3 /* 2*msl quiet time timer */
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/*
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* The SPXT_REXMT timer is used to force retransmissions.
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* The SPX has the SPXT_REXMT timer set whenever segments
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* have been sent for which ACKs are expected but not yet
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* received. If an ACK is received which advances tp->snd_una,
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* then the retransmit timer is cleared (if there are no more
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* outstanding segments) or reset to the base value (if there
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* are more ACKs expected). Whenever the retransmit timer goes off,
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* we retransmit one unacknowledged segment, and do a backoff
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* on the retransmit timer.
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*
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* The SPXT_PERSIST timer is used to keep window size information
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* flowing even if the window goes shut. If all previous transmissions
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* have been acknowledged (so that there are no retransmissions in progress),
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* and the window is too small to bother sending anything, then we start
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* the SPXT_PERSIST timer. When it expires, if the window is nonzero,
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* we go to transmit state. Otherwise, at intervals send a single byte
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* into the peer's window to force him to update our window information.
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* We do this at most as often as SPXT_PERSMIN time intervals,
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* but no more frequently than the current estimate of round-trip
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* packet time. The SPXT_PERSIST timer is cleared whenever we receive
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* a window update from the peer.
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*
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* The SPXT_KEEP timer is used to keep connections alive. If an
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* connection is idle (no segments received) for SPXTV_KEEP amount of time,
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* but not yet established, then we drop the connection. If the connection
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* is established, then we force the peer to send us a segment by sending:
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* <SEQ=SND.UNA-1><ACK=RCV.NXT><CTL=ACK>
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* This segment is (deliberately) outside the window, and should elicit
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* an ack segment in response from the peer. If, despite the SPXT_KEEP
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* initiated segments we cannot elicit a response from a peer in SPXT_MAXIDLE
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* amount of time, then we drop the connection.
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*/
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#define SPX_TTL 30 /* default time to live for SPX segs */
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/*
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* Time constants.
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*/
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#define SPXTV_MSL ( 15*PR_SLOWHZ) /* max seg lifetime */
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#define SPXTV_SRTTBASE 0 /* base roundtrip time;
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if 0, no idea yet */
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#define SPXTV_SRTTDFLT ( 3*PR_SLOWHZ) /* assumed RTT if no info */
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#define SPXTV_PERSMIN ( 5*PR_SLOWHZ) /* retransmit persistence */
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#define SPXTV_PERSMAX ( 60*PR_SLOWHZ) /* maximum persist interval */
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#define SPXTV_KEEP ( 75*PR_SLOWHZ) /* keep alive - 75 secs */
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#define SPXTV_MAXIDLE ( 8*SPXTV_KEEP) /* maximum allowable idle
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time before drop conn */
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#define SPXTV_MIN ( 1*PR_SLOWHZ) /* minimum allowable value */
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#define SPXTV_REXMTMAX ( 64*PR_SLOWHZ) /* max allowable REXMT value */
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#define SPX_LINGERTIME 120 /* linger at most 2 minutes */
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#define SPX_MAXRXTSHIFT 12 /* maximum retransmits */
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#ifdef SPXTIMERS
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char *spxtimers[] =
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{ "REXMT", "PERSIST", "KEEP", "2MSL" };
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#endif
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/*
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* Force a time value to be in a certain range.
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*/
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#define SPXT_RANGESET(tv, value, tvmin, tvmax) { \
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(tv) = (value); \
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if ((tv) < (tvmin)) \
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(tv) = (tvmin); \
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else if ((tv) > (tvmax)) \
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(tv) = (tvmax); \
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}
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#endif /* _NETIPX_SPX_TIMER_H_ */
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