The block ultimately determines the size of the packets that are sent out. Some block controllers (like the radio) use the spp argument to set the length that the block generates. I don't know what's going on in your case, but I would suggest looking at how the packet length is being controlled by the block. You could also use wireshark to confirm the packet length.
Wade On Tue, Jan 12, 2021 at 3:47 PM Rob Kossler via USRP-users < usrp-users@lists.ettus.com> wrote: > Hi, > I have a custom rfnoc block that I am trying to test with the graph "host > => myblock => host". "myblock" is supposed to output packets of a given > size (256) and I am trying to verify that it is doing so. However, in my > simple application to test this graph, I get the following behavior: > > - if I don't set "spp" in my rx_streamer args, I get packet length = > 1989. > - if I set "spp" in my rx_streamer args, I get the packet length that > I set. > - But, what I really want is to get packets of the same size as the > block output. > > Is this something that needs to get configured in my block controller? > Perhaps there is some packet forwarding policy. It's a bit confusing to > me. How can I keep the rx_streamer from changing the packet size that is > output from my block? > > Note: all sizes above are in "samples", not "bytes". > > Rob > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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