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RE: [lwip-devel] again... Zero Copy Ethernet interface

From: bill
Subject: RE: [lwip-devel] again... Zero Copy Ethernet interface
Date: Tue, 23 Dec 2008 16:14:49 -0500

You’d have to have more than one, sure.  You might be able to ping-pong between 2 – but without copying you stand to lose packets if you don’t finish with the first and the second one has come in and then a third is pending.




i suppose i could have a driver with more than one pbuf allocated... it could be more efficient... but, my problem, is the pbuf allocation memory:

DMA MUST works in FIXED region in memory, and instead i have no control where pbuf payload are allocated... do you have a solution?

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