/*------------------------------------------------------------------------
* ripout - do the RIP route exchange protocol, output side
*------------------------------------------------------------------------
*/
PROCESS
ripout(void)
{
int rnd;
rippid = getpid();
dorip = TRUE;
/* advertise our routes */
rnd = 0; /* "randomizer" */
while (TRUE) {
sleep10(RIPOUTMIN); /* minimum time between each */
if (++rnd > RIPDELTA)
rnd = -RIPDELTA;
recvtim(RIPINT-RIPOUTMIN+rnd);
wait(riplock);
ripsend(ip_maskall, UP_RIP);
signal(riplock);
}
}
/*------------------------------------------------------------------------
* rarpsend - broadcast a RARP packet to obtain my IP address
*------------------------------------------------------------------------
*/
int
rarpsend(int ifn)
{
STATWORD ps;
struct netif *pni = &nif[ifn];
struct ep *pep;
int i, mypid, resp;
IPaddr junk = 0; /* arg to mkarp; never used */
mypid = getpid();
for (i=0; i<ARP_MAXRETRY; ++i) {
pep = mkarp(ifn, EPT_RARP, RA_REQUEST, junk, junk);
if ((int)pep == SYSERR)
break;
disable(ps);
rarppid = mypid;
restore(ps);
recvclr();
write(pni->ni_dev, pep, EP_MINLEN);
/* ARP_RESEND is in secs, recvtim uses 1/10's of secs */
resp = recvtim(10*ARP_RESEND<<i);
if (resp != TIMEOUT) {
/* host route */
rtadd(pni->ni_ip, ip_maskall, pni->ni_ip, 0,
NI_LOCAL, RT_INF);
/* non-subnetted route */
rtadd(pni->ni_net, ip_maskall, pni->ni_ip, 0,
NI_LOCAL, RT_INF);
return OK;
}
}
panic("No response to RARP");
return SYSERR;
}
/*------------------------------------------------------------------------
* netstart - initialize net
*------------------------------------------------------------------------
*/
int
netstart(int userpid)
{
char str[128];
char *str1 = "sleeping 30 secs to get routes...";
char *str2 = "\ndone.\n";
unsigned long now;
int i;
if (clkruns == FALSE)
panic("net: no clock");
/* initialize ports */
for (i=0 ; i<UPPS ; i++)
upqs[i].up_valid = FALSE;
udpmutex = screate(1);
arpinit();
ipfinit(); /* init the IP frag queue */
/* these need a command to set/clear them. FIX ME!!! */
gateway = 1;
IpForwarding = 1; /* == 2 if not a gateway */
IfNumber = Net.nif - 1;
/* bsdbrc = 1; */ /* uncomment to use 0's broadcast */
if (gateway) {
IPaddr gw;
initgate();
gw = dot2ip(DEFRTR);
rtadd(RT_DEFAULT, RT_DEFAULT, gw, RTM_INF-1, 1, RT_INF);
} else
inithost();
rtadd(RT_LOOPBACK, ip_maskall, RT_LOOPBACK, 0, NI_LOCAL, RT_INF);
for (i=0; i<Net.nif; ++i) {
nif[i].ni_ipinq = newq(NI_INQSZ, QF_NOWAIT);
nif[i].ni_hwtype = AR_HARDWARE; /* for ARP */
/* no OTHER's for now */
if (i < 2)
nif[i].ni_state = NIS_UP;
}
/*
* wait()'s synchronize to insure initialization is done
* before proceeding.
*/
resume(create(slowtimer, STSTK, STPRI, STNAM, STARGC));
wait(Net.sema);
resume(create(ipproc, IPSTK, IPPRI, IPNAM, IPARGC));
wait(Net.sema);
resume(create(tcptimer, TMSTK, TMPRI, TMNAM, TMARGC));
wait(Net.sema);
resume(create(tcpinp, TCPISTK, TCPIPRI, TCPINAM, TCPIARGC));
wait(Net.sema);
resume(create(tcpout, TCPOSTK, TCPOPRI, TCPONAM, TCPOARGC));
wait(Net.sema);
if (!gateway) {
write(CONSOLE, str1, strlen(str1));
sleep(30);
write(CONSOLE, str2, strlen(str2));
}
/* get addrs & names */
for (i=0; i<Net.nif; ++i) {
IPaddr junk;
char junk2[64];
if (i == NI_LOCAL)
continue;
if (nif[i].ni_state != NIS_UP)
continue;
junk = getiaddr(i);
sprintf(str,
"if%d IP %s ha %02x:%02x:%02x:%02x:%02x:%02x ",
i,
ip2dot(junk2, nif[i].ni_ip),
nif[i].ni_hwa.ha_addr[0]&0xff,
nif[i].ni_hwa.ha_addr[1]&0xff,
nif[i].ni_hwa.ha_addr[2]&0xff,
nif[i].ni_hwa.ha_addr[3]&0xff,
nif[i].ni_hwa.ha_addr[4]&0xff,
nif[i].ni_hwa.ha_addr[5]&0xff);
write(CONSOLE, str, strlen(str));
sprintf(str, "br %02x:%02x:%02x:%02x:%02x:%02x\n",
nif[i].ni_hwb.ha_addr[0]&0xff,
nif[i].ni_hwb.ha_addr[1]&0xff,
nif[i].ni_hwb.ha_addr[2]&0xff,
nif[i].ni_hwb.ha_addr[3]&0xff,
nif[i].ni_hwb.ha_addr[4]&0xff,
nif[i].ni_hwb.ha_addr[5]&0xff);
write(CONSOLE, str, strlen(str));
icmp(ICT_MASKRQ, 0, nif[i].ni_brc, 0, 0);
recvtim(30); /* wait for an answer */
getiname(i, junk2);
}
getutim(&now);
#ifdef MULTICAST
hginit();
#endif /* MULTICAST */
#ifdef RIP
resume(create(rip, RIPISTK, RIPPRI, RIPNAM, RIPARGC));
#endif /* RIP */
#ifdef OSPF
resume(create(ospf, OSPFSTK, OSPFPRI, OSPFNAM, 0));
#endif /* OSPF */
#ifdef SNMP
resume(create(snmpd, SNMPSTK, SNMPPRI, SNMPDNAM, 0));
#endif /* SNMP */
rwho();
resume(create(FINGERD, FNGDSTK, FNGDPRI, FNGDNAM, FNGDARGC));
resume(create(ECHOD, ECHOSTK, ECHOPRI, ECHODNAM, 0));
resume(create(udpecho, 1000, 50, "udpecho", 0));
resume(userpid);
}
