1999/0625/pc/devether.c (diff list | history)

1999/0402/sys/src/9/pc/devether.c:130,140 – 1999/0625/sys/src/9/pc/devether.c:130,140 (short | long | prev | next)
1997/0327		} Block* etheriq(Ether* ether, Block* bp, int freebp)
1999/0625		etheriq(Ether* ether, Block* bp, int fromwire)
1997/0327		{ Etherpkt *pkt;
1993/1120		ushort type;
1999/0316		int len, multi, forme;
1999/0625		int len, multi, tome, fromme;
1997/0327		Netfile **ep, *f, **fp, *fx; Block *xbp;
1993/1120
1999/0402/sys/src/9/pc/devether.c:150,156 – 1999/0625/sys/src/9/pc/devether.c:150,156
1997/0404		/* check for valid multcast addresses */
1999/0316		if(multi && memcmp(pkt->d, ether->bcast, sizeof(pkt->d)) && ether->prom == 0){
1997/0404		if(!activemulti(ether, pkt->d, sizeof(pkt->d))){ if(freebp){
1999/0625		if(fromwire){
1997/0404		freeb(bp); bp = 0; }
1999/0402/sys/src/9/pc/devether.c:158,176 – 1999/0625/sys/src/9/pc/devether.c:158,182
1997/0404		} }
1999/0316		// is it for me? forme = memcmp(pkt->d, ether->ea, sizeof(pkt->d)) == 0;
1999/0625		/* is it for me? */ tome = memcmp(pkt->d, ether->ea, sizeof(pkt->d)) == 0; fromme = memcmp(pkt->s, ether->ea, sizeof(pkt->s)) == 0;
1999/0316
1997/0327		/* * Multiplex the packet to all the connections which want it. * If the packet is not to be used subsequently (freebp != 0),
1999/0625		* If the packet is not to be used subsequently (fromwire != 0),
1997/0327		* attempt to simply pass it into one of the connections, thereby * saving a copy of the data (usual case hopefully). */ for(fp = ether->f; fp < ep; fp++){
1999/0316		if((f = *fp) && (f->type == type || f->type < 0) && (forme || multi || f->prom)){
1995/0713		if(f->type > -2){
1997/0327		if(freebp && fx == 0)
1999/0625		if(f = *fp) if(f->type == type || f->type < 0) if(tome || multi || f->prom){ /* Don't want to hear bridged packets */ if(f->bridge && !fromwire && !fromme) continue; if(!f->headersonly){ if(fromwire && fx == 0)
1997/0327		fx = f; else if(xbp = iallocb(len)){ memmove(xbp->wp, pkt, len);
1999/0402/sys/src/9/pc/devether.c:190,196 – 1999/0625/sys/src/9/pc/devether.c:196,202
1998/1013		ether->soverflows++;
1997/0327		return 0; } if(freebp){
1999/0625		if(fromwire){
1997/0327		freeb(bp); return 0; }
1999/0402/sys/src/9/pc/devether.c:201,207 – 1999/0625/sys/src/9/pc/devether.c:207,213
1993/1120		static int
1997/0327		etheroq(Ether* ether, Block* bp)
1993/1120		{
1999/0316		int len, loopback, s, mine;
1999/0625		int len, loopback, s;
1997/0327		Etherpkt *pkt;
1993/1120
1997/0327		ether->outpackets++;
1999/0402/sys/src/9/pc/devether.c:217,228 – 1999/0625/sys/src/9/pc/devether.c:223,232
1997/0327		*/ pkt = (Etherpkt*)bp->rp; len = BLEN(bp);
1997/0808		loopback = (memcmp(pkt->d, ether->ea, sizeof(pkt->d)) == 0);
1999/0316		mine = memcmp(pkt->s, ether->ea, sizeof(pkt->s)) == 0; if(mine)
1999/0625		loopback = memcmp(pkt->d, ether->ea, sizeof(pkt->d)) == 0;
1997/0808		if(loopback || memcmp(pkt->d, ether->bcast, sizeof(pkt->d)) == 0 || ether->prom){
1997/0327		s = splhi(); etheriq(ether, bp, loopback);
1999/0625		etheriq(ether, bp, 0);
1997/0327		splx(s); }
1994/0702
1999/0402/sys/src/9/pc/devether.c:229,235 – 1999/0625/sys/src/9/pc/devether.c:233,240
1997/0327		if(!loopback){ qbwrite(ether->oq, bp); ether->transmit(ether); }
1999/0625		} else freeb(bp);
1997/0327		return len;
1993/1120		}