1992/1222/pc/devether.c (diff list | history)

1992/1015/sys/src/9/pc/devether.c:7,12 – 1992/1222/sys/src/9/pc/devether.c:7,14 (short | long | prev | next)
1992/0403		#include "io.h" #include "devtab.h"
1992/1222		#include "ether.h"
1992/0922		/* * Half-arsed attempt at a general top-level * ethernet driver. Needs work:
1992/1015/sys/src/9/pc/devether.c:14,48 – 1992/1222/sys/src/9/pc/devether.c:16,50
1992/0922		* much tidying * set ethernet address */ extern EtherHw ether509; extern EtherHw ether80x3;
1992/1222		extern Board ether8003; extern Board ether503; extern Board ether2000; extern Board ether509;
1992/0403
1992/0922		static EtherHw *etherhw[] = {
1992/1222		/* * The ordering here is important for those boards * using the DP8390 (WD8003, 3COM503 and NE2000) as * attempting to determine if a board is a NE2000 * cannot be done passively, so it must be last to * prevent scrogging one of the others. */ static Board *boards[] = { ðer8003, ðer503, ðer2000,
1992/0922		ðer509, ðer80x3, 0
1992/0404		}; enum {
1992/0922		Nctlr = 1,
1992/1222		NCtlr = 1,
1992/0424		};
1992/0403
1992/0922		static struct EtherCtlr ctlr[Nctlr];
1992/1222		static struct Ctlr *softctlr[NCtlr]; static int nctlr;
1992/0922
1992/0424		#define NEXT(x, l) (((x)+1)%(l)) #define OFFSETOF(t, m) ((unsigned)&(((t*)0)->m)) #define HOWMANY(x, y) (((x)+((y)-1))/(y)) #define ROUNDUP(x, y) (HOWMANY((x), (y))*(y))
1992/0403
1992/0425		Chan* etherattach(char *spec)
1992/0424		{
1992/0917		if(ctlr[0].present == 0) error(Enodev);
1992/0425		return devattach('l', spec);
1992/0424		}
1992/0411
1992/0424		Chan* etherclone(Chan *c, Chan *nc)
1992/0411		{
1992/0424		return devclone(c, nc);
1992/1015/sys/src/9/pc/devether.c:51,69 – 1992/1222/sys/src/9/pc/devether.c:53,71
1992/0424		int etherwalk(Chan *c, char *name) { return netwalk(c, name, &ctlr[0].net);
1992/1222		return netwalk(c, name, &softctlr[0]->net);
1992/0424		} void etherstat(Chan *c, char *dp) { netstat(c, dp, &ctlr[0].net);
1992/1222		netstat(c, dp, &softctlr[0]->net);
1992/0424		} Chan* etheropen(Chan *c, int omode) { return netopen(c, omode, &ctlr[0].net);
1992/1222		return netopen(c, omode, &softctlr[0]->net);
1992/0424		} void
1992/1015/sys/src/9/pc/devether.c:83,89 – 1992/1222/sys/src/9/pc/devether.c:85,91
1992/0424		long etherread(Chan *c, void *a, long n, ulong offset) { return netread(c, a, n, offset, &ctlr[0].net);
1992/1222		return netread(c, a, n, offset, &softctlr[0]->net);
1992/0411		}
1992/0424		long
1992/1015/sys/src/9/pc/devether.c:103,268 – 1992/1222/sys/src/9/pc/devether.c:105,297
1992/0424		void etherwstat(Chan *c, char *dp) { netwstat(c, dp, &ctlr[0].net);
1992/1222		netwstat(c, dp, &softctlr[0]->net);
1992/0424		}
1992/0407		static int
1992/0424		isobuf(void *arg)
1992/0407		{
1992/0922		EtherCtlr *cp = arg;
1992/1222		Ctlr *ctlr = arg;
1992/0407
1992/0425		return cp->tb[cp->th].owner == Host;
1992/1222		return ctlr->tb[ctlr->th].owner == Host;
1992/0407		}
1992/0403		static void etheroput(Queue *q, Block *bp) {
1992/0922		EtherCtlr *cp; EtherType *tp;
1992/0403		Etherpkt *p;
1992/0922		EtherBuf *tb;
1992/1222		Ctlr *ctlr; Type *type; Etherpkt *pkt; RingBuf *ring;
1992/0922		int len, n;
1992/0403		Block *nbp;
1992/1222		type = q->ptr; ctlr = type->ctlr;
1992/0403		if(bp->type == M_CTL){
1992/0410		tp = q->ptr;
1992/0403		if(streamparse("connect", bp))
1992/0922		tp->type = strtol((char*)bp->rptr, 0, 0);
1992/1222		qlock(ctlr); if(streamparse("connect", bp)){ if(type->type == -1) ctlr->all--; type->type = strtol((char*)bp->rptr, 0, 0); if(type->type == -1) ctlr->all++; }
1992/0403		else if(streamparse("promiscuous", bp)) {
1992/0410		tp->prom = 1;
1992/0424		(*tp->ctlr->hw->mode)(tp->ctlr, 1);
1992/1222		type->prom = 1; ctlr->prom++; if(ctlr->prom == 1) (*ctlr->board->mode)(ctlr, 1);
1992/0403		}
1992/1222		qunlock(ctlr);
1992/0403		freeb(bp); return; }
1992/0922		cp = ((EtherType*)q->ptr)->ctlr;
1992/0424
1992/0403		/* * give packet a local address, return upstream if destined for
1992/1222		* Give packet a local address, return upstream if destined for
1992/0403		* this machine. */
1992/0406		if(BLEN(bp) < ETHERHDRSIZE && (bp = pullup(bp, ETHERHDRSIZE)) == 0) return;
1992/0922		p = (Etherpkt*)bp->rptr;
1992/0406		memmove(p->s, cp->ea, sizeof(cp->ea)); if(memcmp(cp->ea, p->d, sizeof(cp->ea)) == 0){
1992/1222		pkt = (Etherpkt*)bp->rptr; memmove(pkt->s, ctlr->ea, sizeof(ctlr->ea)); if(memcmp(ctlr->ea, pkt->d, sizeof(ctlr->ea)) == 0){
1992/0403		len = blen(bp);
1992/0406		if (bp = expandb(bp, len >= ETHERMINTU ? len: ETHERMINTU)){
1992/0424		putq(&cp->lbq, bp);
1992/0406		wakeup(&cp->rr);
1992/1222		if(bp = expandb(bp, len >= ETHERMINTU ? len: ETHERMINTU)){ putq(&ctlr->lbq, bp); wakeup(&ctlr->rr);
1992/0403		} return; }
1992/0406		if(memcmp(cp->ba, p->d, sizeof(cp->ba)) == 0){
1992/1222		if(memcmp(ctlr->ba, pkt->d, sizeof(ctlr->ba)) == 0 || ctlr->prom || ctlr->all){
1992/0403		len = blen(bp); nbp = copyb(bp, len);
1992/0406		if(nbp = expandb(nbp, len >= ETHERMINTU ? len: ETHERMINTU)){
1992/0403		nbp->wptr = nbp->rptr+len;
1992/0424		putq(&cp->lbq, nbp);
1992/0406		wakeup(&cp->rr);
1992/1222		putq(&ctlr->lbq, nbp); wakeup(&ctlr->rr);
1992/0403		} } /* * only one transmitter at a time
1992/1222		* Only one transmitter at a time.
1992/0403		*/
1992/0424		qlock(&cp->tlock);
1992/1222		qlock(&ctlr->tlock);
1992/0403		if(waserror()){
1992/0411		freeb(bp);
1992/0424		qunlock(&cp->tlock);
1992/1222		qunlock(&ctlr->tlock);
1992/0403		nexterror(); } /*
1992/0424		* wait till we get an output buffer.
1992/1222		* Wait till we get an output buffer.
1992/0424		* should try to restart.
1992/0403		*/
1992/0424		sleep(&cp->tr, isobuf, cp);
1992/1222		sleep(&ctlr->tr, isobuf, ctlr);
1992/0403
1992/0424		tb = &cp->tb[cp->th];
1992/1222		ring = &ctlr->tb[ctlr->th];
1992/0424
1992/0403		/* * copy message into buffer
1992/1222		* Copy message into buffer.
1992/0403		*/ len = 0; for(nbp = bp; nbp; nbp = nbp->next){ if(sizeof(Etherpkt) - len >= (n = BLEN(nbp))){
1992/0501		memmove(tb->pkt+len, nbp->rptr, n);
1992/1222		memmove(ring->pkt+len, nbp->rptr, n);
1992/0403		len += n; } else print("no room damn it\n");
1992/1222		}
1992/0403		if(bp->flags & S_DELIM) break; } /*
1992/0407		* pad the packet (zero the pad)
1992/1222		* Pad the packet (zero the pad).
1992/0403		*/ if(len < ETHERMINTU){
1992/0501		memset(tb->pkt+len, 0, ETHERMINTU-len);
1992/1222		memset(ring->pkt+len, 0, ETHERMINTU-len);
1992/0403		len = ETHERMINTU; } /*
1992/0424		* set up the transmit buffer and
1992/0407		* start the transmission
1992/1222		* Set up the transmit buffer and * start the transmission.
1992/0403		*/
1992/0424		cp->outpackets++; tb->len = len; tb->owner = Interface; cp->th = NEXT(cp->th, cp->ntb); (*cp->hw->transmit)(cp);
1992/1222		ctlr->outpackets++; ring->len = len; ring->owner = Interface; ctlr->th = NEXT(ctlr->th, ctlr->ntb); (*ctlr->board->transmit)(ctlr);
1992/0403		freeb(bp);
1992/0424		qunlock(&cp->tlock);
1992/1222		qunlock(&ctlr->tlock);
1992/0403		poperror(); } /* * open an ether line discipline * * the lock is to synchronize changing the ethertype with * sending packets up the stream on interrupts.
1992/1222		* Open an ether line discipline.
1992/0403		*/ static void etherstopen(Queue *q, Stream *s) {
1992/0922		EtherCtlr *cp = &ctlr[0]; EtherType *tp;
1992/1222		Ctlr *ctlr = softctlr[0]; Type *type;
1992/0403
1992/0410		tp = &cp->type[s->id]; qlock(tp); RD(q)->ptr = WR(q)->ptr = tp; tp->type = 0; tp->q = RD(q); tp->inuse = 1; tp->ctlr = cp; qunlock(tp);
1992/1222		type = &ctlr->type[s->id]; RD(q)->ptr = WR(q)->ptr = type; type->type = 0; type->q = RD(q); type->inuse = 1; type->ctlr = ctlr;
1992/0403		} /* * close ether line discipline
1992/1222		* Close ether line discipline.
1992/0403		* * the lock is to synchronize changing the ethertype with * sending packets up the stream on interrupts.
1992/1222		* The locking is to synchronize changing the ethertype with * sending packets up the stream on interrupts.
1992/0403		*/
1992/1222		static int isclosed(void *arg) { return ((Type*)arg)->q == 0; }
1992/0403		static void etherstclose(Queue *q) {
1992/0922		EtherType *tp;
1992/1222		Type *type = (Type*)(q->ptr); Ctlr *ctlr = type->ctlr;
1992/0403
1992/0922		tp = (EtherType*)(q->ptr);
1992/0424		if(tp->prom) (*tp->ctlr->hw->mode)(tp->ctlr, 0);
1992/0410		qlock(tp); tp->type = 0; tp->q = 0; tp->prom = 0; tp->inuse = 0;
1992/0625		netdisown(tp);
1992/0505		tp->ctlr = 0;
1992/0410		qunlock(tp);
1992/1222		if(type->prom){ qlock(ctlr); ctlr->prom--; if(ctlr->prom == 0) (*ctlr->board->mode)(ctlr, 0); qunlock(ctlr); } if(type->type == -1){ qlock(ctlr); ctlr->all--; qunlock(ctlr); } /* * Mark as closing and wait for kproc * to close us. */ lock(&ctlr->clock); type->clist = ctlr->clist; ctlr->clist = type; unlock(&ctlr->clock); wakeup(&ctlr->rr); sleep(&type->cr, isclosed, type); type->type = 0; type->prom = 0; type->inuse = 0; netdisown(type); type->ctlr = 0;
1992/0403		} static Qinfo info = {
1992/1015/sys/src/9/pc/devether.c:276,295 – 1992/1222/sys/src/9/pc/devether.c:305,324
1992/0403		static int
1992/0404		clonecon(Chan *c)
1992/0403		{
1992/0922		EtherCtlr *cp = &ctlr[0]; EtherType *tp;
1992/1222		Ctlr *ctlr = softctlr[0]; Type *type;
1992/0403
1992/0711		USED(c);
1992/0410		for(tp = cp->type; tp < &cp->type[NType]; tp++){ qlock(tp); if(tp->inuse || tp->q){ qunlock(tp);
1992/1222		for(type = ctlr->type; type < &ctlr->type[NType]; type++){ qlock(type); if(type->inuse || type->q){ qunlock(type);
1992/0403		continue; }
1992/0410		tp->inuse = 1;
1992/0625		netown(tp, u->p->user, 0);
1992/0410		qunlock(tp); return tp - cp->type;
1992/1222		type->inuse = 1; netown(type, u->p->user, 0); qunlock(type); return type - ctlr->type;
1992/0403		} exhausted("ether channels");
1992/0711		return 0;
1992/1015/sys/src/9/pc/devether.c:298,311 – 1992/1222/sys/src/9/pc/devether.c:327,341
1992/0403		static void
1992/0404		statsfill(Chan *c, char *p, int n)
1992/0403		{
1992/0922		EtherCtlr *cp = &ctlr[0];
1992/1222		Ctlr *ctlr = softctlr[0];
1992/0403		char buf[256];
1992/0711		USED(c);
1992/0403		sprint(buf, "in: %d\nout: %d\ncrc errs %d\noverflows: %d\nframe errs %d\nbuff errs: %d\noerrs %d\naddr: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x\n",
1992/0404		cp->inpackets, cp->outpackets, cp->crcs, cp->overflows, cp->frames, cp->buffs, cp->oerrs, cp->ea[0], cp->ea[1], cp->ea[2], cp->ea[3], cp->ea[4], cp->ea[5]);
1992/1222		ctlr->inpackets, ctlr->outpackets, ctlr->crcs, ctlr->overflows, ctlr->frames, ctlr->buffs, ctlr->oerrs, ctlr->ea[0], ctlr->ea[1], ctlr->ea[2], ctlr->ea[3], ctlr->ea[4], ctlr->ea[5]);
1992/0403		strncpy(p, buf, n); }
1992/1015/sys/src/9/pc/devether.c:313,367 – 1992/1222/sys/src/9/pc/devether.c:343,390
1992/0403		typefill(Chan *c, char *p, int n) { char buf[16];
1992/0922		EtherType *tp;
1992/1222		Type *type;
1992/0403
1992/0410		tp = &ctlr[0].type[STREAMID(c->qid.path)]; sprint(buf, "%d", tp->type);
1992/1222		type = &softctlr[0]->type[STREAMID(c->qid.path)]; sprint(buf, "%d", type->type);
1992/0403		strncpy(p, buf, n); } static void
1992/0922		etherup(EtherCtlr *cp, void *data, int len)
1992/1222		etherup(Ctlr *ctlr, Etherpkt *pkt, int len)
1992/0403		{
1992/0501		Etherpkt *p;
1992/0404		int t;
1992/0922		EtherType *tp;
1992/1222		Type *type;
1992/0501		Block *bp;
1992/0404
1992/0501		p = data;
1992/0410		t = (p->type[0]<<8)|p->type[1]; for(tp = &cp->type[0]; tp < &cp->type[NType]; tp++){
1992/0404		/* * check before locking just to save a lock */
1992/0410		if(tp->q == 0 || (t != tp->type && tp->type != -1))
1992/0404		continue;
1992/1222		t = (pkt->type[0]<<8)|pkt->type[1]; for(type = &ctlr->type[0]; type < &ctlr->type[NType]; type++){
1992/0404		/* * only a trace channel gets packets destined for other machines
1992/1222		* Check for open, the right type, and flow control.
1992/0404		*/
1992/0410		if(tp->type != -1 && p->d[0] != 0xFF && memcmp(p->d, cp->ea, sizeof(p->d)))
1992/1222		if(type->q == 0)
1992/0404		continue;
1992/1222		if(t != type->type && type->type != -1) continue; if(type->q->next->len > Streamhi) continue;
1992/0404		/* * check after locking to make sure things didn't * change under foot
1992/1222		* Only a trace channel gets packets destined for other machines.
1992/0404		*/
1992/0410		if(canqlock(tp) == 0)
1992/1222		if(type->type != -1 && pkt->d[0] != 0xFF && (*pkt->d != *ctlr->ea || memcmp(pkt->d, ctlr->ea, sizeof(pkt->d))))
1992/0404		continue;
1992/0410		if(tp->q == 0 || tp->q->next->len > Streamhi || (t != tp->type && tp->type != -1)){ qunlock(tp);
1992/0404		continue; }
1992/1015		if(!waserror()){
1992/1222		if(waserror() == 0){
1992/0424		bp = allocb(len); memmove(bp->rptr, p, len);
1992/1222		memmove(bp->rptr, pkt, len);
1992/0424		bp->wptr += len;
1992/0404		bp->flags |= S_DELIM;
1992/0410		PUTNEXT(tp->q, bp);
1992/1222		PUTNEXT(type->q, bp);
1992/1015		poperror();
1992/0404		}
1992/0410		qunlock(tp);
1992/0404		} }
1992/1015/sys/src/9/pc/devether.c:368,417 – 1992/1222/sys/src/9/pc/devether.c:391,456
1992/0403		static int isinput(void *arg) {
1992/0922		EtherCtlr *cp = arg;
1992/1222		Ctlr *ctlr = arg;
1992/0403
1992/0925		return cp->lbq.first || cp->rb[cp->rh].owner == Host;
1992/1222		return ctlr->lbq.first || ctlr->rb[ctlr->rh].owner == Host || ctlr->clist;
1992/0403		} static void etherkproc(void *arg) {
1992/0922		EtherCtlr *cp = arg; EtherBuf *rb;
1992/1222		Ctlr *ctlr = arg; RingBuf *ring;
1992/0404		Block *bp;
1992/1222		Type *type;
1992/0403		if(waserror()){
1992/0404		print("%s noted\n", cp->name);
1992/0922		if(cp->hw->init) (*cp->hw->init)(cp);
1992/0404		cp->kproc = 0;
1992/1222		print("%s noted\n", ctlr->name); /* fix if(ctlr->board->reset) (*ctlr->board->reset)(ctlr); */ ctlr->kproc = 0;
1992/0403		nexterror(); }
1992/0404		cp->kproc = 1;
1992/1222
1992/0403		for(;;){
1992/0915		tsleep(&cp->rr, isinput, cp, 500);
1992/0922		if(cp->hw->tweak) (*cp->hw->tweak)(cp);
1992/1222		tsleep(&ctlr->rr, isinput, ctlr, 500); if(ctlr->board->watch) (*ctlr->board->watch)(ctlr);
1992/0424
1992/0406		/* * process any internal loopback packets
1992/1222		* Process any internal loopback packets.
1992/0406		*/
1992/0424		while(bp = getq(&cp->lbq)){
1992/0404		cp->inpackets++;
1992/0501		etherup(cp, bp->rptr, BLEN(bp));
1992/1222		while(bp = getq(&ctlr->lbq)){ ctlr->inpackets++; etherup(ctlr, (Etherpkt*)bp->rptr, BLEN(bp));
1992/0404		freeb(bp); }
1992/0408
1992/0406		/* * process any received packets
1992/1222		* Process any received packets.
1992/0406		*/
1992/0424		while(cp->rb[cp->rh].owner == Host){
1992/0406		cp->inpackets++;
1992/0424		rb = &cp->rb[cp->rh];
1992/0501		etherup(cp, rb->pkt, rb->len);
1992/0424		rb->owner = Interface;
1992/0502		cp->rh = NEXT(cp->rh, cp->nrb);
1992/1222		while(ctlr->rb[ctlr->rh].owner == Host){ ctlr->inpackets++; ring = &ctlr->rb[ctlr->rh]; etherup(ctlr, (Etherpkt*)ring->pkt, ring->len); ring->owner = Interface; ctlr->rh = NEXT(ctlr->rh, ctlr->nrb);
1992/0424		}
1992/1222		/* * Close Types requesting it. */ if(ctlr->clist){ lock(&ctlr->clock); for(type = ctlr->clist; type; type = type->clist){ type->q = 0; wakeup(&type->cr); } ctlr->clist = 0; unlock(&ctlr->clock); }
1992/0424		} }
1992/0410
1992/1015/sys/src/9/pc/devether.c:418,463 – 1992/1222/sys/src/9/pc/devether.c:457,520
1992/0922		static void etherintr(Ureg *ur) { EtherCtlr *cp = &ctlr[0];
1992/1222		Ctlr *ctlr = softctlr[0];
1992/0922		USED(ur); (*cp->hw->intr)(cp);
1992/1222		(*ctlr->board->intr)(ctlr);
1992/0922		}
1992/0424		void etherreset(void) {
1992/0922		EtherCtlr *cp; EtherHw **hw;
1992/1222		Ctlr *ctlr; Board **board;
1992/0625		int i;
1992/0410
1992/0625		cp = &ctlr[0];
1992/0922		for(hw = etherhw; *hw; hw++){ cp->hw = *hw; if((*cp->hw->reset)(cp) == 0){ cp->present = 1; setvec(Int0vec + cp->hw->irq, etherintr);
1992/1222		if(softctlr[nctlr] == 0) softctlr[nctlr] = xalloc(sizeof(Ctlr)); ctlr = softctlr[nctlr]; for(board = boards; *board; board++){ ctlr->board = *board; if((*ctlr->board->reset)(ctlr) == 0){ ctlr->present = 1; /* * IRQ2 doesn't really exist, it's used to gang the interrupt * controllers together. A device set to IRQ2 will appear on * the second interrupt controller as IRQ9. */ if(ctlr->board->irq == 2) ctlr->board->irq = 9; setvec(Int0vec + ctlr->board->irq, etherintr);
1992/0922		break; }
1992/0917		}
1992/0922		if(cp->present == 0)
1992/1222		if(ctlr->present == 0)
1992/0922		return;
1992/1222		nctlr++;
1992/0410
1992/0424		memset(cp->ba, 0xFF, sizeof(cp->ba));
1992/1222		if(ctlr->nrb == 0) ctlr->nrb = Nrb; ctlr->rb = xalloc(sizeof(RingBuf)*ctlr->nrb); if(ctlr->ntb == 0) ctlr->ntb = Ntb; ctlr->tb = xalloc(sizeof(RingBuf)*ctlr->ntb);
1992/0410
1992/0424		cp->net.name = "ether"; cp->net.nconv = NType; cp->net.devp = &info; cp->net.protop = 0; cp->net.listen = 0; cp->net.clone = clonecon; cp->net.ninfo = 2; cp->net.info[0].name = "stats"; cp->net.info[0].fill = statsfill; cp->net.info[1].name = "type"; cp->net.info[1].fill = typefill;
1992/1222		memset(ctlr->ba, 0xFF, sizeof(ctlr->ba)); ctlr->net.name = "ether"; ctlr->net.nconv = NType; ctlr->net.devp = &info; ctlr->net.protop = 0; ctlr->net.listen = 0; ctlr->net.clone = clonecon; ctlr->net.ninfo = 2; ctlr->net.info[0].name = "stats"; ctlr->net.info[0].fill = statsfill; ctlr->net.info[1].name = "type"; ctlr->net.info[1].fill = typefill;
1992/0625		for(i = 0; i < NType; i++) netadd(&cp->net, &cp->type[i], i);
1992/1222		netadd(&ctlr->net, &ctlr->type[i], i);
1992/0403		}
1992/0425		void
1992/1015/sys/src/9/pc/devether.c:464,492 – 1992/1222/sys/src/9/pc/devether.c:521,561
1992/0425		etherinit(void)
1992/0403		{ int ctlrno = 0;
1992/0922		EtherCtlr *cp = &ctlr[ctlrno];
1992/1222		Ctlr *ctlr = softctlr[ctlrno];
1992/0424		int i;
1992/0403
1992/0917		if(cp->present == 0)
1992/1222		if(ctlr->present == 0)
1992/0917		return;
1992/0424		cp->rh = 0; cp->ri = 0; for(i = 0; i < cp->nrb; i++) cp->rb[i].owner = Interface;
1992/1222		ctlr->rh = 0; ctlr->ri = 0; for(i = 0; i < ctlr->nrb; i++) ctlr->rb[i].owner = Interface;
1992/0424		cp->th = 0; cp->ti = 0; for(i = 0; i < cp->ntb; i++) cp->tb[i].owner = Host;
1992/1222		ctlr->th = 0; ctlr->ti = 0; for(i = 0; i < ctlr->ntb; i++) ctlr->tb[i].owner = Host; }
1992/0424
1992/1222		Chan* etherattach(char *spec) { int ctlrno = 0; Ctlr *ctlr = softctlr[ctlrno]; if(ctlr->present == 0) error(Enodev);
1992/0403		/* * put the receiver online * and start the kproc
1992/1222		* Enable the interface * and start the kproc.
1992/0501		*/
1992/0424		(*cp->hw->online)(cp, 1); if(cp->kproc == 0){ sprint(cp->name, "ether%dkproc", ctlrno); kproc(cp->name, etherkproc, cp);
1992/1222		(*ctlr->board->attach)(ctlr); if(ctlr->kproc == 0){ sprint(ctlr->name, "ether%dkproc", ctlrno); ctlr->kproc = 1; kproc(ctlr->name, etherkproc, ctlr);
1992/0403		}
1992/1222		return devattach('l', spec);
1992/0403		}