Re: Changes in the network interface queueing handoff model

Robert Watson wrote:

I tend to agree, but implemented full queueing support for if_em to make sure I understood to complexity implications of completely removing queueing from the ifnet side dispatch. I guess an interesting question for us is how we decide what the right threshold is to implement software queuing. Do any if_em cards need software queueing, or do they all have adequate in-hardware queues as is? Entirely cutting the queue code would significantly simplify em_startmbuf.
Actually most em cards support 4096 descriptors each way.

Pete

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