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Altera_Forum
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10 years ago

Altera SGDMA & TSE

Hi all, I am working on TSE and is using sgdma for avalon_stream_to_mem descriptor, now in my code I have four descriptors,I am receiving network packets in my local buffer from sgdma in every sgd...
Altera_Forum's avatar
Altera_Forum
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10 years ago

It looks okay but I haven't used the tse_mac_* functions in a while and I don't remember how bloated they are. You could have a look inside them and see what they do. Ideally they should just signal the IP stack that a new packet has arrived and return, instead of doing all the packet processing.

What network protocol are you using? TCP is slower than UDP as it requires more processing from the IP stack.

How big is the instruction cache on the Nios? Does changing to a /f core improve anything?