Hi,

 

I've managed to take some steps backwards with my rfnoc work. 

 

In a test using the ADDSUB block and looking at packet sizes I see a maximum
of 2000 samples per packet reported by the streamer, and 8058 byte packets
received in wireshark.

 

In my block I count valid's to assert tlast, and have been using 256 samples
with "sideband at end".

 

However, it seems I cannot increase that counter to 1024 samples where I get
these errors (even if I set the streamer SPP to 1024):

[ERROR] [STREAMER] The receive transport caught a value exception.

ValueError: Bad CHDR header or invalid packet length.

 

(Strangely, I still get the 1024-sample packets according to wireshark, so I
guess its not related to the firmware?)

 

BTW in my noc shell I have an MTU of 10, and have axis_data_to_chdr fifo's
of 2048 samples.

 

What do I need to do to ensure I can also get large packets out of my block,
as smaller blocks are causing dropped packet headaches?

 

Many thanks, Kevin

 

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