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fixed memory leak in bcm driver

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This commit is contained in:
aiju 2011-07-19 18:56:41 +02:00
parent 8f6173c8bd
commit 61a8b5c803
1 changed files with 13 additions and 6 deletions
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19
sys/src/9/pc/etherbcm.c
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@ -326,18 +326,20 @@ bcmreceive(Ether *edev)
}
static void
bcmtransclean(Ether *edev)
bcmtransclean(Ether *edev, int dolock)
{
Ctlr *ctlr;
ctlr = edev->ctlr;
ilock(&ctlr->txlock);
if(dolock)
ilock(&ctlr->txlock);
while(ctlr->sendcleani != (ctlr->status[4] >> 16)) {
freeb(ctlr->sends[ctlr->sendri]);
ctlr->sends[ctlr->sendri] = 0;
freeb(ctlr->sends[ctlr->sendcleani]);
ctlr->sends[ctlr->sendcleani] = 0;
ctlr->sendcleani = (ctlr->sendcleani + 1) & (SendRingLen - 1);
}
iunlock(&ctlr->txlock);
if(dolock)
iunlock(&ctlr->txlock);
}
static void
@ -356,6 +358,11 @@ bcmtransmit(Ether *edev)
print("bcm: send queue full\n");
break;
}
if(incr == ctlr->sendcleani) {
bcmtransclean(edev, 0);
if(incr == ctlr->sendcleani)
break;
}
bp = qget(edev->oq);
if(bp == nil) break;
next = ctlr->sendr + ctlr->sendri * 4;
@ -414,7 +421,7 @@ bcminterrupt(Ureg*, void *arg)
if(status & LinkStateChange) checklink(edev);
// print("bcm: interrupt %8ulx %8ulx\n", ctlr->status[2], ctlr->status[4]);
bcmreceive(edev);
bcmtransclean(edev);
bcmtransclean(edev, 1);
bcmtransmit(edev);
csr32(ctlr, InterruptMailbox) = tag << 24;
iunlock(&ctlr->imlock);