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Internet Info 1994 March
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Internet Info CD-ROM (Walnut Creek) (March 1994).iso
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networking
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ip
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ka9q
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MNetsrc.hqx
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Mac TCP_IP Source v.33
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nrcmd.c
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1989-02-27
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1,246 lines
/* net/rom user command processing
* Copyright 1989 by Daniel M. Frank, W9NK. Permission granted for
* non-commercial distribution only.
*/
#include <stdio.h>
#include "global.h"
#include "config.h"
#include "mbuf.h"
#include "ax25.h"
#include "timer.h"
#include "iface.h"
#include "lapb.h"
#include "netrom.h"
#include "nr4.h"
#include "ax_mbx.h"
#include "cmdparse.h"
#include "session.h"
#include <ctype.h>
#undef NRDEBUG
char *Nr4states[] = {
"Disconnected",
"Conn Pending",
"Connected",
"Disc Pending"
} ;
char *Nr4reasons[] = {
"Normal",
"By Peer",
"Timeout",
"Reset",
"Refused"
} ;
static int dointerface(), dobcnodes(), donodetimer(), donrroute(),
donrttl(), doobsotimer(), donodefilter(), donrverbose(),
donrconnect(), donrreset(), donrwindow(), donrirtt(),
donracktime(), donrqlimit(), donrchoketime(), donrretries(),
donrstatus(), donrkick() ;
static struct cmds nrcmds[] = {
"acktime", donracktime, 0, NULLCHAR, NULLCHAR,
"bcnodes", dobcnodes, 2, "netrom bcnodes <interface>", NULLCHAR,
/* Put connect before choketime to make it the default expansion of 'c' */
"connect", donrconnect,2, "netrom connect <node>", NULLCHAR,
"choketime", donrchoketime, 0, NULLCHAR, NULLCHAR,
"interface", dointerface, 4,
"netrom interface <interface> <alias> <quality>", NULLCHAR,
"irtt", donrirtt, 0, NULLCHAR, NULLCHAR,
"kick", donrkick, 0, NULLCHAR, NULLCHAR,
"nodefilter", donodefilter, 0, NULLCHAR, NULLCHAR,
"nodetimer", donodetimer, 0, NULLCHAR, NULLCHAR,
"obsotimer", doobsotimer, 0, NULLCHAR, NULLCHAR,
"qlimit", donrqlimit, 0, NULLCHAR, NULLCHAR,
"reset", donrreset, 2, "netrom reset <&nrcb>", NULLCHAR,
"retries", donrretries,0, NULLCHAR, NULLCHAR,
"route", donrroute, 0, NULLCHAR, NULLCHAR,
"status", donrstatus, 0, NULLCHAR, NULLCHAR,
"ttl", donrttl, 0, NULLCHAR, NULLCHAR,
"verbose", donrverbose,0, NULLCHAR, NULLCHAR,
"window", donrwindow, 0, NULLCHAR, NULLCHAR,
NULLCHAR, NULLFP, 0,
"netrom subcommands: acktime bcnodes connect choketime interface irtt kick\n nodetimer nodefilter obsotimer qlimit reset retries route\n status ttl verbose window",
NULLCHAR
} ;
static struct timer nodetimer ; /* timer for nodes broadcasts */
static struct timer obsotimer ; /* timer for aging routes */
/* Command multiplexer */
donetrom(argc,argv)
int argc ;
char *argv[] ;
{
return subcmd(nrcmds,argc,argv) ;
}
static int dorouteadd(), doroutedrop(), doroutedump(), dorouteinfo() ;
static struct cmds routecmds[] = {
"add", dorouteadd, 6,
"netrom route add <alias> <destination> <interface> <quality> <neighbor>",
"add failed",
"drop", doroutedrop, 4,
"netrom route drop <destination> <neighbor> <interface>",
"drop failed",
"info", dorouteinfo, 2,
"netrom route info <destination>", NULLCHAR,
NULLCHAR, NULLFP, 0,
"netrom route subcommands: add drop info",
NULLCHAR
} ;
/* Route command multiplexer */
static
donrroute(argc, argv)
int argc ;
char *argv[] ;
{
if (argc < 2) {
doroutedump() ;
return 0 ;
}
return subcmd(routecmds,argc,argv) ;
}
/* Dump a list of known routes */
static
doroutedump()
{
register struct nrroute_tab *rp ;
register int i, column ;
char buf[16] ;
char *cp ;
column = 1 ;
for (i = 0 ; i < NRNUMCHAINS ; i++)
for (rp = nrroute_tab[i] ; rp != NULLNRRTAB ; rp = rp->next) {
strcpy(buf,rp->alias) ;
/* remove trailing spaces */
if ((cp = index(buf,' ')) == NULLCHAR)
cp = &buf[strlen(buf)] ;
if (cp != buf) /* don't include colon for null alias */
*cp++ = ':' ;
pax25(cp,&rp->call) ;
printf("%-16s ",buf) ;
if (column++ == 4) {
printf("\n") ;
column = 1 ;
}
}
if (column != 1)
printf("\n") ;
return 0 ;
}
/* print detailed information on an individual route */
dorouteinfo(argc,argv)
int argc ;
char *argv[] ;
{
register struct nrroute_tab *rp ;
register struct nr_bind *bp ;
register struct nrnbr_tab *np ;
struct ax25_addr dest ;
char neighbor[60] ;
if (setcall(&dest,argv[1]) == -1) {
printf ("bad destination name\n") ;
return -1 ;
}
if ((rp = find_nrroute(&dest)) == NULLNRRTAB) {
printf("no such route\n") ;
return -1 ;
}
for (bp = rp->routes ; bp != NULLNRBIND ; bp = bp->next) {
np = bp->via ;
psax25(neighbor,np->call) ;
printf("%1s %3d %3d %-8s %s\n",
(bp->flags & NRB_PERMANENT ? "P" :
bp->flags & NRB_RECORDED ? "R" : " "),
bp->quality,bp->obsocnt,
nrifaces[np->interface].interface->name,
neighbor) ;
}
return 0 ;
}
/* convert a null-terminated alias name to a blank-filled, upcased */
/* version. Return -1 on failure. */
static int
putalias(to,from,complain)
register char *to, *from ;
int complain ;
{
int len, i ;
if ((len = strlen(from)) > ALEN) {
if (complain)
printf ("alias too long - six characters max\n") ;
return -1 ;
}
for (i = 0 ; i < ALEN ; i++) {
if (i < len) {
if (islower(*from))
*to++ = toupper(*from++) ;
else
*to++ = *from++ ;
}
else
*to++ = ' ' ;
}
*to = '\0' ;
return 0 ;
}
/* Add a route */
dorouteadd(argc, argv)
int argc ;
char *argv[] ;
{
char alias[7] ;
struct ax25_addr dest ;
unsigned quality ;
char neighbor[AXALEN * 3] ;
register int i ;
int naddr ;
/* format alias (putalias prints error message if necessary) */
if (putalias(alias,argv[1],1) == -1)
return -1 ;
/* format destination callsign */
if (setcall(&dest,argv[2]) == -1) {
printf("bad destination callsign\n") ;
return -1 ;
}
/* find interface */
for (i = 0 ; i < nr_numiface ; i++)
if (!strcmp(nrifaces[i].interface->name,argv[3]))
break ;
if (i == nr_numiface) {
printf("Interface \"%s\" not found\n",argv[3]) ;
return -1 ;
}
/* get and check quality value */
if ((quality = atoi(argv[4])) > 255) {
printf("maximum route quality is 255\n") ;
return -1 ;
}
/* make sure no more than 2 digis */
naddr = argc - 5 ;
if (naddr > 3) {
printf("no more than 2 digipeaters for a net/rom neighbor\n") ;
return -1 ;
}
/* format neighbor address string */
setpath(neighbor,&argv[5],naddr) ;
return nr_routeadd(alias,&dest,i,quality,neighbor,1,0) ;
}
/* drop a route */
static
doroutedrop(argc,argv)
int argc ;
char *argv[] ;
{
struct ax25_addr dest, neighbor ;
register int i ;
/* format destination and neighbor callsigns */
if (setcall(&dest,argv[1]) == -1) {
printf("bad destination callsign\n") ;
return -1 ;
}
if (setcall(&neighbor,argv[2]) == -1) {
printf("bad neighbor callsign\n") ;
return -1 ;
}
/* find interface */
for (i = 0 ; i < nr_numiface ; i++)
if (!strcmp(nrifaces[i].interface->name,argv[3]))
break ;
if (i == nr_numiface) {
printf("Interface \"%s\" not found\n",argv[3]) ;
return -1 ;
}
return nr_routedrop(&dest,&neighbor,i) ;
}
/* make an interface available to net/rom */
int
dointerface(argc,argv)
int argc ;
char *argv[] ;
{
register char *sp, *dp ;
int i, len ;
register struct interface *ifp ;
extern struct interface *ifaces ;
if (nr_interface == NULLIF) {
printf("Attach netrom interface first\n") ;
return 1 ;
}
if (nr_numiface >= NRNUMIFACE) {
printf("Only %d net/rom interfaces available\n",NRNUMIFACE) ;
return 1 ;
}
for(ifp=ifaces;ifp != NULLIF;ifp = ifp->next){
if(strcmp(argv[1],ifp->name) == 0)
break;
}
if(ifp == NULLIF){
printf("Interface \"%s\" unknown\n",argv[1]);
return 1;
}
for (i = 0 ; i < nr_numiface ; i++)
if (nrifaces[i].interface == ifp) {
printf("Interface \"%s\" is already registered\n",argv[1]) ;
return 1 ;
}
nrifaces[nr_numiface].interface = ifp ;
if (putalias(nrifaces[nr_numiface].alias,argv[2],1) == -1)
return 1 ;
if ((nrifaces[nr_numiface].quality = atoi(argv[3])) > 255) {
printf("Quality cannot be greater than 255\n") ;
return 1 ;
}
nr_numiface++ ; /* accept this interface */
return 0 ;
}
/* Broadcast nodes list on named interface. */
int
dobcnodes(argc,argv)
int argc ;
char *argv[] ;
{
register int i ;
for (i = 0 ; i < nr_numiface ; i++)
if (!strcmp(nrifaces[i].interface->name,argv[1]))
break ;
if (i == nr_numiface) {
printf("Interface \"%s\" not found\n",argv[1]) ;
return 1 ;
}
nr_bcnodes(i) ;
}
#define TICKSPERSEC (1000L / MSPTICK) /* Ticks per second */
/* Set outbound node broadcast interval */
static int
donodetimer(argc,argv)
int argc;
char *argv[];
{
int donodetick();
if(argc < 2){
printf("%lu/%lu\n",
(nodetimer.start - nodetimer.count)/TICKSPERSEC,
nodetimer.start/TICKSPERSEC);
return 0;
}
stop_timer(&nodetimer) ; /* in case it's already running */
nodetimer.func = (void (*)())donodetick;/* what to call on timeout */
nodetimer.arg = NULLCHAR; /* dummy value */
nodetimer.start = atol(argv[1])*TICKSPERSEC; /* set timer duration */
start_timer(&nodetimer); /* and fire it up */
return 0;
}
static int
donodetick()
{
register int i ;
for (i = 0 ; i < nr_numiface ; i++)
nr_bcnodes(i) ;
/* Restart timer */
start_timer(&nodetimer) ;
}
/* Set timer for aging routes */
static int
doobsotimer(argc,argv)
int argc;
char *argv[];
{
extern int doobsotick();
if(argc < 2){
printf("%lu/%lu\n",(obsotimer.start - obsotimer.count)/TICKSPERSEC,
obsotimer.start/TICKSPERSEC);
return 0;
}
stop_timer(&obsotimer) ; /* just in case it's already running */
obsotimer.func = (void (*)())doobsotick;/* what to call on timeout */
obsotimer.arg = NULLCHAR; /* dummy value */
obsotimer.start = atol(argv[1])*TICKSPERSEC; /* set timer duration */
start_timer(&obsotimer); /* and fire it up */
return 0;
}
/* Go through the routing table, reducing the obsolescence count of
* non-permanent routes, and purging them if the count reaches 0
*/
static int
doobsotick()
{
register struct nrnbr_tab *np ;
register struct nrroute_tab *rp, *rpnext ;
register struct nr_bind *bp, *bpnext ;
struct ax25_addr neighbor ;
int i ;
for (i = 0 ; i < NRNUMCHAINS ; i++) {
for (rp = nrroute_tab[i] ; rp != NULLNRRTAB ; rp = rpnext) {
rpnext = rp->next ; /* save in case we free this route */
for (bp = rp->routes ; bp != NULLNRBIND ; bp = bpnext) {
bpnext = bp->next ; /* in case we free this binding */
if (bp->flags & NRB_PERMANENT) /* don't age these */
continue ;
if (--bp->obsocnt == 0) { /* time's up! */
if (bp->next != NULLNRBIND)
bp->next->prev = bp->prev ;
if (bp->prev != NULLNRBIND)
bp->prev->next = bp->next ;
else
rp->routes = bp->next ;
rp->num_routes-- ; /* one less binding */
np = bp->via ; /* find the neighbor */
free(bp) ; /* now we can free the bind */
/* Check to see if we can free the neighbor */
if (--np->refcnt == 0) {
if (np->next != NULLNTAB)
np->next->prev = np->prev ;
if (np->prev != NULLNTAB)
np->prev->next = np->next ;
else {
memcpy(neighbor.call,np->call,ALEN) ;
neighbor.ssid = np->call[ALEN] ;
nrnbr_tab[nrhash(&neighbor)] = np->next ;
}
free(np) ; /* free the storage */
}
}
}
if (rp->num_routes == 0) { /* did we free them all? */
if (rp->next != NULLNRRTAB)
rp->next->prev = rp->prev ;
if (rp->prev != NULLNRRTAB)
rp->prev->next = rp->next ;
else
nrroute_tab[i] = rp->next ;
free(rp) ;
}
}
}
start_timer(&obsotimer) ;
}
static int donfadd(), donfdrop(), donfmode() ;
static struct cmds nfcmds[] = {
"add", donfadd, 3,
"netrom nodefilter add <neighbor> <interface>",
"add failed",
"drop", donfdrop, 3,
"netrom nodefilter drop <neighbor> <interface>",
"drop failed",
"mode", donfmode, 0, NULLCHAR, NULLCHAR,
NULLCHAR, NULLFP, 0,
"nodefilter subcommands: add drop mode",
NULLCHAR
} ;
/* nodefilter command multiplexer */
static
donodefilter(argc,argv)
int argc ;
char *argv[] ;
{
if (argc < 2) {
donfdump() ;
return 0 ;
}
return subcmd(nfcmds,argc,argv) ;
}
/* display a list of <callsign,interface> pairs from the filter
* list.
*/
static
donfdump()
{
int i, column = 1 ;
struct nrnf_tab *fp ;
char buf[16] ;
for (i = 0 ; i < NRNUMCHAINS ; i++)
for (fp = nrnf_tab[i] ; fp != NULLNRNFTAB ; fp = fp->next) {
pax25(buf,&fp->neighbor) ;
printf("%-7s %-8s ",
buf,nrifaces[fp->interface].interface->name) ;
if (column++ == 4) {
printf("\n") ;
column = 1 ;
}
}
if (column != 1)
printf("\n") ;
return 0 ;
}
/* add an entry to the filter table */
static
donfadd(argc,argv)
int argc ;
char *argv[] ;
{
struct ax25_addr neighbor ;
register int i ;
/* format callsign */
if (setcall(&neighbor,argv[1]) == -1) {
printf("bad neighbor callsign\n") ;
return -1 ;
}
/* find interface */
for (i = 0 ; i < nr_numiface ; i++)
if (!strcmp(nrifaces[i].interface->name,argv[2]))
break ;
if (i == nr_numiface) {
printf("Interface \"%s\" not found\n",argv[2]) ;
return -1 ;
}
return nr_nfadd(&neighbor,i) ;
}
/* drop an entry from the filter table */
static
donfdrop(argc,argv)
int argc ;
char *argv[] ;
{
struct ax25_addr neighbor ;
register int i ;
/* format neighbor callsign */
if (setcall(&neighbor,argv[1]) == -1) {
printf("bad neighbor callsign\n") ;
return -1 ;
}
/* find interface */
for (i = 0 ; i < nr_numiface ; i++)
if (!strcmp(nrifaces[i].interface->name,argv[2]))
break ;
if (i == nr_numiface) {
printf("Interface \"%s\" not found\n",argv[2]) ;
return -1 ;
}
return nr_nfdrop(&neighbor,i) ;
}
/* nodefilter mode subcommand */
static
donfmode(argc,argv)
int argc ;
char *argv[] ;
{
if (argc < 2) {
printf("filter mode is ") ;
switch (nr_nfmode) {
case NRNF_NOFILTER:
printf("none\n") ;
break ;
case NRNF_ACCEPT:
printf("accept\n") ;
break ;
case NRNF_REJECT:
printf("reject\n") ;
break ;
default:
printf("some strange, unknown value\n") ;
}
return 0 ;
}
switch (argv[1][0]) {
case 'n':
case 'N':
nr_nfmode = NRNF_NOFILTER ;
break ;
case 'a':
case 'A':
nr_nfmode = NRNF_ACCEPT ;
break ;
case 'r':
case 'R':
nr_nfmode = NRNF_REJECT ;
break ;
default:
printf("modes are: none accept reject\n") ;
return -1 ;
}
return 0 ;
}
/* netrom network packet time-to-live initializer */
static
donrttl(argc, argv)
int argc ;
char *argv[] ;
{
int val ;
if (argc < 2) {
printf("%d\n", nr_ttl) ;
return 0 ;
}
val = atoi(argv[1]) ;
if (val < 0 || val > 255) {
printf("ttl must be between 0 and 255\n") ;
return 1 ;
}
nr_ttl = val ;
return 0 ;
}
/* verbose route broadcast */
static
donrverbose(argc,argv)
int argc ;
char *argv[] ;
{
if (argc < 2) {
printf("verbose is %s\n", nr_verbose ? "yes" : "no" ) ;
return 0 ;
}
switch (argv[1][0]) {
case 'n':
case 'N':
nr_verbose = 0 ;
break ;
case 'y':
case 'Y':
nr_verbose = 1 ;
break ;
default:
printf("use: netrom verbose [yes|no]\n") ;
return -1 ;
}
return 0 ;
}
/* Initiate a NET/ROM transport connection */
int
donrconnect(argc,argv)
int argc ;
char *argv[] ;
{
struct ax25_addr node, *np ;
struct nr4cb *cb ;
struct session *s ;
char alias[7] ;
int (*nr4_parse)();
/* See if the requested destination could be an alias, and */
/* find and use it if it is. Otherwise assume it is an ax.25 */
/* address. */
if (putalias(alias,argv[1],0) != -1 &&
(np = find_nralias(alias)) != NULLAXADDR)
node = *np ;
else
setcall(&node,argv[1]) ; /* parse ax25 callsign */
/* Get a session descriptor */
if ((s = newsession()) == NULLSESSION) {
printf("Too many sessions\n") ;
return 1 ;
}
if((s->name = malloc((unsigned)strlen(argv[1])+1)) != NULLCHAR)
strcpy(s->name,argv[1]);
s->type = NRSESSION ;
s->parse = nr4_parse ;
current = s;
s->cb.nr4_cb = open_nr4(&node,&mycall,nr4_rx,nr4_tx,nr4_state,(char *)s) ;
go() ;
return 0 ;
}
/* Display changes in NET/ROM state */
void
nr4_state(cb,old,new)
struct nr4cb *cb ;
int old,new;
{
struct session *s;
s = (struct session *)cb->puser;
if(current != NULLSESSION && current->type == NRSESSION && current == s){
printf("%s",Nr4states[new]);
if(new == NR4STDISC) {
printf(" (%s)\n", Nr4reasons[cb->dreason]) ;
cmdmode();
} else
printf("\n") ;
fflush(stdout);
}
if(new == NR4STDISC){
cb->puser = NULLCHAR;
freesession(s);
}
}
/* Handle typed characters on a NET/ROM connection */
void
nr4_parse(buf,cnt)
char *buf;
int16 cnt;
{
struct mbuf *bp;
register char *cp;
int16 size, i ;
char c;
if(current == NULLSESSION || current->type != NRSESSION)
return; /* "can't happen" */
/* If recording is on, record outgoing stuff too */
if(current->record != NULLFILE)
fwrite(buf,1,cnt,current->record);
/* Parse it out, splitting at transport frame boundaries */
while (cnt != 0) {
#ifdef NRDEBUG
printf("Once around the parse loop - cnt = %d\n", cnt) ;
#endif
size = min(cnt, NR4MAXINFO) ;
if ((bp = alloc_mbuf(size)) == NULLBUF)
break ;
/* Copy keyboard buffer to output, stripping line feeds */
cp = bp->data ;
for (i = 0 ; i < size ; i++){
c = *buf++;
if(c != '\n'){
*cp++ = c;
bp->cnt++;
}
}
cnt -= size ;
send_nr4(current->cb.nr4_cb,bp);
}
}
/* Handle new incoming terminal sessions
* This is the default state change upcall function, used when
* someone else connects to us
*/
void
nr4_incom(cb,oldstate,newstate)
struct nr4cb *cb ;
int oldstate ;
int newstate ;
{
void nr4_session() ;
if (newstate != NR4STCON) /* why are you bothering us? */
return ; /* (shouldn't happen) */
if (ax25mbox)
mbx_nr4incom(cb) ;
else
nr4_session(cb) ;
return ;
}
/* This function sets up a NET/ROM chat session */
void
nr4_session(cb)
struct nr4cb *cb ;
{
struct session *s;
char remote[10];
int (*nr4_parse)();
pax25(remote,&cb->user);
if((s = newsession()) == NULLSESSION){
/* Out of sessions */
disc_nr4(cb);
return;
}
s->type = NRSESSION ;
s->name = malloc((int16)strlen(remote)+1);
s->cb.nr4_cb = cb ;
s->parse = nr4_parse;
strcpy(s->name,remote);
cb->r_upcall = nr4_rx;
cb->s_upcall = nr4_state;
cb->t_upcall = nr4_tx;
cb->puser = (char *)s;
#if (defined(MAC) || defined(AMIGA))
printf("\007Incoming NET/ROM session %lu from %s\n",s - sessions,remote);
#else
printf("\007Incoming NET/ROM session %u from %s\n",s - sessions,remote);
#endif
fflush(stdout);
}
/* Handle incoming terminal traffic */
void
nr4_rx(cb,cnt)
struct nr4cb *cb ;
int16 cnt;
{
register struct mbuf *bp;
char c;
/* Hold output if we're not the current session */
if(mode != CONV_MODE || current == NULLSESSION
|| current->type != NRSESSION || current->cb.nr4_cb != cb)
return;
if((bp = recv_nr4(cb,cnt)) == NULLBUF)
return;
/* Display received characters, translating CR's to CR/LF */
while(bp != NULLBUF){
while(bp->cnt-- != 0){
c = *bp->data++;
if(c == '\r')
c = '\n';
putchar(c);
if(current->record){
#ifndef UNIX
#ifndef MAC
if(c == '\n')
fputc('\r',current->record);
#endif
#endif
fputc(c,current->record);
}
}
bp = free_mbuf(bp);
}
if(current->record)
fflush(current->record);
fflush(stdout);
}
/* Handle transmit upcalls. Used only for file uploading */
void
nr4_tx(cb,cnt)
struct nr4cb *cb ;
int16 cnt;
{
register char *cp;
struct session *s;
register struct mbuf *bp;
int16 size;
int c;
if((s = (struct session *)cb->puser) == NULLSESSION
|| s->upload == NULLFILE)
return;
while(cnt != 0){
size = min(cnt,NR4MAXINFO);
if((bp = alloc_mbuf(size)) == NULLBUF)
break;
cp = bp->data;
/* Now send data characters, translating between local
* keyboard end-of-line sequences and the (unwritten)
* AX.25 convention, which is carriage-return only
*/
while(bp->cnt < size){
if((c = getc(s->upload)) == EOF)
break;
#ifdef MSDOS
/* MS-DOS gives cr-lf */
if(c == '\n')
continue;
#endif
#if (defined(UNIX) || defined(MAC) || defined(AMIGA))
/* These give lf only */
if(c == '\n')
c = '\r';
#endif
*cp++ = c;
bp->cnt++;
}
cnt -= bp->cnt;
send_nr4(cb,bp);
}
if(cnt != 0){
/* Error or end-of-file */
fclose(s->upload);
s->upload = NULLFILE;
free(s->ufile);
s->ufile = NULLCHAR;
}
}
/* Reset a net/rom connection abruptly */
static int
donrreset(argc,argv)
int argc;
char *argv[];
{
struct nr4cb *cb ;
extern char notval[];
cb = (struct nr4cb *)htol(argv[1]);
if(!nr4valcb(cb)){
printf(notval);
return 1;
}
reset_nr4(cb);
return 0;
}
/* Force retransmission on a net/rom connection */
static int
donrkick(argc,argv)
int argc;
char *argv[];
{
struct nr4cb *cb ;
extern char notval[];
cb = (struct nr4cb *)htol(argv[1]);
if (kick_nr4(cb) == -1) {
printf(notval);
return 1;
} else
return 0;
}
/* netrom transport ACK delay timer */
static
donracktime(argc, argv)
int argc ;
char *argv[] ;
{
long val ;
if (argc < 2) {
printf("%lu\n", Nr4acktime) ;
return 0 ;
}
val = atol(argv[1]) ;
Nr4acktime = val ;
return 0 ;
}
/* netrom transport choke timeout */
static
donrchoketime(argc, argv)
int argc ;
char *argv[] ;
{
long val ;
if (argc < 2) {
printf("%lu\n", Nr4choketime) ;
return 0 ;
}
val = atol(argv[1]) ;
Nr4choketime = val ;
return 0 ;
}
/* netrom transport initial round trip time */
static
donrirtt(argc, argv)
int argc ;
char *argv[] ;
{
long val ;
if (argc < 2) {
printf("%lu\n", Nr4irtt) ;
return 0 ;
}
val = atol(argv[1]) ;
Nr4irtt = val ;
return 0 ;
}
/* netrom transport receive queue length limit. This is the */
/* threshhold at which we will CHOKE the sender. */
static
donrqlimit(argc, argv)
int argc ;
char *argv[] ;
{
unsigned val ;
if (argc < 2) {
printf("%u\n", Nr4qlimit) ;
return 0 ;
}
val = atoi(argv[1]) ;
if (val == 0) {
printf("You cannot set the queue limit to 0\n") ;
return 1 ;
}
Nr4qlimit = val ;
return 0 ;
}
/* netrom transport maximum window. This is the largest send and */
/* receive window we may negotiate */
static
donrwindow(argc, argv)
int argc ;
char *argv[] ;
{
unsigned val ;
if (argc < 2) {
printf("%u\n", Nr4window) ;
return 0 ;
}
val = atoi(argv[1]) ;
if (val == 0 || val > NR4MAXWIN) {
printf("Illegal NET/ROM window size. Range is [1,%d]\n",
NR4MAXWIN) ;
return 1 ;
}
Nr4window = val ;
return 0 ;
}
/* netrom transport maximum retries. This is used in connect and */
/* disconnect attempts; I haven't decided what to do about actual */
/* data retries yet. */
static
donrretries(argc, argv)
int argc ;
char *argv[] ;
{
unsigned val ;
if (argc < 2) {
printf("%u\n", Nr4retries) ;
return 0 ;
}
val = atoi(argv[1]) ;
if (val == 0) {
printf("Impatient, aren't we? Zero retries not possible\n") ;
return 1 ;
}
Nr4retries = val ;
return 0 ;
}
/* Display the status of NET/ROM connections */
static
donrstatus(argc, argv)
int argc ;
char *argv[] ;
{
int i ;
struct nr4cb *cb ;
char luser[10], ruser[10], node[10] ;
extern char notval[] ;
static void donrdump() ;
if (argc < 2) {
printf(" &CB Snd-W Snd-Q Rcv-Q LUser RUser @Node State\n");
for (i = 0 ; i < NR4MAXCIRC ; i++) {
if ((cb = Nr4circuits[i].ccb) == NULLNR4CB)
continue ;
pax25(luser,&cb->luser) ;
pax25(ruser,&cb->user) ;
pax25(node,&cb->node) ;
printf("%8lx %3d %5d %5d %9s %9s %-9s %s\n",
(long)cb, cb->nbuffered, len_q(cb->txq),
len_mbuf(cb->rxq), luser, ruser, node,
Nr4states[cb->state]) ;
}
return 0 ;
}
cb = (struct nr4cb *)htol(argv[1]) ;
if (!nr4valcb(cb)) {
printf(notval) ;
return 1 ;
}
donrdump(cb) ;
return 0 ;
}
/* Dump one control block */
void
donrdump(cb)
struct nr4cb *cb ;
{
int i ;
char luser[10], ruser[10], node[10] ;
unsigned seq ;
struct nr4txbuf *b ;
struct timer *t ;
pax25(luser,&cb->luser) ;
pax25(ruser,&cb->user) ;
pax25(node, &cb->node) ;
printf("Local: %s %d/%d Remote: %s @ %s %d/%d State: %s\n",
luser, cb->mynum, cb->myid, ruser, node,
cb->yournum, cb->yourid, Nr4states[cb->state]) ;
printf("Window: %-5u Rxpect: %-5u RxNext: %-5u RxQ: %-5d %s\n",
cb->window, uchar(cb->rxpected), uchar(cb->rxpastwin),
len_mbuf(cb->rxq), cb->qfull ? "RxCHOKED" : "") ;
printf(" Unack: %-5u Txpect: %-5u TxNext: %-5u TxQ: %-5d %s\n",
cb->nbuffered, uchar(cb->ackxpected), uchar(cb->nextosend),
len_q(cb->txq), cb->choked ? "TxCHOKED" : "") ;
printf("TACK: ") ;
if (run_timer(&cb->tack))
printf("%lu", (cb->tack.start - cb->tack.count) * MSPTICK) ;
else
printf("stop") ;
printf("/%lu ms; ", cb->tack.start * MSPTICK) ;
printf("TChoke: ") ;
if (run_timer(&cb->tchoke))
printf("%lu", (cb->tchoke.start - cb->tchoke.count) * MSPTICK) ;
else
printf("stop") ;
printf("/%lu ms; ", cb->tchoke.start * MSPTICK) ;
printf("TCD: ") ;
if (run_timer(&cb->tcd))
printf("%lu", (cb->tcd.start - cb->tcd.count) * MSPTICK) ;
else
printf("stop") ;
printf("/%lu ms", cb->tcd.start * MSPTICK) ;
if (run_timer(&cb->tcd))
printf("; Tries: %u\n", cb->cdtries) ;
else
printf("\n") ;
printf("Backoff Level %u SRTT %ld ms Mean dev %ld ms\n",
cb->blevel, cb->srtt, cb->mdev) ;
/* If we are connected and the send window is open, display */
/* the status of all the buffers and their timers */
if (cb->state == NR4STCON && cb->nextosend != cb->ackxpected) {
printf("TxBuffers: Seq Size Tries Timer\n") ;
for (seq = cb->ackxpected ;
nr4between(cb->ackxpected, seq, cb->nextosend) ;
seq = (seq + 1) & NR4SEQMASK) {
b = &cb->txbufs[seq % cb->window] ;
t = &b->tretry ;
printf(" %3u %3d %5d %lu/%lu\n",
seq, len_mbuf(b->data), b->retries + 1,
(t->start - t->count) * MSPTICK, t->start * MSPTICK) ;
}
}
}