Messages in this thread | | | Subject | Re: zero-copy TCP fileserving | Date | Thu, 3 Jun 1999 18:04:22 +0100 (BST) | From | Alan Cox <> |
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> But in the case of a heavy filetransfer, the data will need to hit main > memory, especially if the NIC can bus-master DMA from main memory. The
> DMA in, DMA out. Checksum can be handled by the NIC. Now I'm not mad > enough to claim that direct device<->device I/O is the way to go (which > was discussed here recently :).
If the hardware can do checksum on outgoing for you, you are absolutely correct. But not many do.
Alan
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