[USRP-users] tx_stream->get_max_num_samps() too low

Marcus D. Leech patchvonbraun at gmail.com
Fri Jul 24 13:25:06 EDT 2020


On 07/24/2020 01:04 PM, Devin Kelly via USRP-users wrote:
> Well the documentation says RX stream only but it turned out to work 
> for TX streams too... so the documentation writer should be embarrassed!
>
> In my first message I verified that the HW actually sends 8100 byte 
> packets using ping, that is unless tcpdump is lying to me or 
> re-constructing IP packets in a way that's transparent to me.
>
> It seems that there's a frame size that's hard coded in 
> x300_eth_mgr.cpp and that's what was causing me trouble.  I got 
> get_max_num_samps up to 1996 and so far that's helped the actual 
> application I'm writing substantially.
>
> Devin
>
Ah, that's just establishing the *defaults* if you don't otherwise 
specify the send_frame_size, documented here:

https://files.ettus.com/manual/page_transport.html





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