/*------------------------------------------------------------------------
* netinit - initialize network data structures
*------------------------------------------------------------------------
*/
netinit()
{
struct netq *nqptr;
int i;
/* Initialize pool of network buffers and rest of Net structure */
if (clkruns == FALSE)
panic("net: no clock");
Net.netpool = mkpool(EMAXPAK, NETBUFS);
for (i=0 ; i<NETQS ; i++) {
nqptr = &Net.netqs[i];
nqptr->valid = FALSE;
nqptr->uport = -1;
nqptr->xport = pcreate(NETQLEN);
}
Net.mavalid = FALSE;
dtoIP(&Net.gateway, NETGATE);
Net.nxtprt = ULPORT;
Net.nmutex = screate(1);
Net.npacket = Net.ndrop = Net.nover = 0;
return(OK);
}
/*------------------------------------------------------------------------
* main -- test ethernet by reading packets
*------------------------------------------------------------------------
*/
main()
{
char buff[1600];
int i, len;
char *p, ch;
struct epacket *epkptr;
/* call buffer pool stuff so 'freebuf' can be mentioned */
/* without generating a load-time error */
mkpool(10,10);
kprintf("Read from Ethernet\n");
epkptr = (struct epacket *)buff;
while (1) {
if ( (len=read(ETHER, buff, 1500)) == SYSERR) {
kprintf("\nError\n");
} else if (epkptr->ep_hdr.e_ptype == EP_ARP) {
/* do ARP */ kprintf("ARP...\n");
} else {
p = (char *)buff;
kprintf("\n LEN: %d\n TO: ",len);
for (i=0 ; i<6 ; i++)
kprintf("%03o ", 0377& *p++);
kprintf("\nFROM: ");
for (i=0 ; i<6 ; i++)
kprintf("%03o ", 0377& *p++);
kprintf("\nTYPE: ");
kprintf("%03o ", 0377 & *p++);
kprintf("%03o ", 0377 & *p++);
kprintf("\nDATA: ");
for (i=0 ; i<60 ; i++)
if ( printable(ch = *p++) )
kprintf("%c",ch);
kprintf("\n");
}
}
}
//------------------------------------------------------------------------
// sysinit -- initialize all Xinu data structures and devices
//------------------------------------------------------------------------
static int
sysinit(void)
{
static int (*nulluserp)() = &nulluser;
static uword *nulluserpp = (uword *)&nulluserp;
struct pentry *pptr;
struct mblock *mptr;
// initialize system variables
numproc = 0;
nextproc = NPROC - 1;
nextsem = NSEM - 1;
nextqueue = NPROC; // q[0..NPROC-1] are processes
// initialize free memory list
memlist.mnext = mptr = (struct mblock *)roundew(&end);
mptr->mnext = (struct mblock *)NULL;
mptr->mlen = (uword)truncew((uintptr_t)maxaddr - NULLSTK - (uintptr_t)&end);
// initialize process table
for (int k = 0; k < NPROC; k++)
proctab[k].pstate = PRFREE;
// initialize null process entry
pptr = &proctab[NULLPROC];
pptr->pstate = PRCURR;
pptr->pprio = 0;
strlcpy(pptr->pname, "prnull", PNMLEN);
pptr->plimit = ((char *)maxaddr) - NULLSTK - sizeof(uword);
pptr->pbase = (char *)maxaddr;
*((uword *)pptr->pbase) = MAGIC;
pptr->paddr = (char *)(*nulluserpp);
pptr->phasmsg = FALSE;
pptr->pargs = 0;
currpid = NULLPROC;
// initialize semaphores
for (int k = 0; k < NSEM; k++) {
struct sentry *sptr = &semaph[k];
sptr->sstate = SFREE;
sptr->sqtail = 1 + (sptr->sqhead = newqueue());
}
// initialize ready list
rdyhead = newqueue();
rdytail = 1 + rdyhead;
// initialize memory marking
_mkinit();
// initialize r.t.clock
clkinit();
// initialize disk buffers
dskdbp = mkpool(DBUFSIZ, NDBUFF);
dskrbp = mkpool(DREQSIZ, NDREQ);
// initialize devices
for (int k = 0; k < NDEVS; k++)
init(k);
return OK;
}
/*------------------------------------------------------------------------
* mon_init - initialize monitor related stuff
*------------------------------------------------------------------------
*/
int mon_init()
{
mon_initq();
mon_bufpool = mkpool(1530, 16);
return(OK);
}
