Messages in this thread | | | Subject | Re: How many copies to get from NIC RX to user read()? | Date | Wed, 10 Jul 2002 00:11:49 +0100 (BST) | From | Alan Cox <> |
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> How many times is data copied between the time that it is received at the > NIC and when the user's call to read() returns the data?
Optimal case for TCP
NIC->buffer (DMA) buffer->user (CPU)
IFF the TCP checksum can be done by the card
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