[Discuss-gnuradio] Ethernet and Hardware list

[Giacomo Cariello]

I'm answering to some questions that were made several months ago (I only 
read them recently through the archive), in the hope it might be useful.

I work daily with Gigabit ethernet interfaces and on a fast i686 box, with 
66 Mhz PCI buses, they can reach very high throughoutputs, quite near the 
physical limit. If you want to obtain the maximum performance, you should 
allow the interface to use jumbo frames (9000 bytes wide packets + the 
ethernet header, rather than 1500).

Probably you should take a look at Alteon Networks interfaces (3com uses 
their chipsets) or Intel.

If completeness of information is an issue, you should avoid using custom 
transport protocols. TCP with the necessary buffering/timing tweaks is the 
most performant "stream" protocol (ie: don't reinvent the wheel).

I just joined this mailing list (on the slashdot's wave), but I'm no radio 
guru at all, so I was wondering if anyone was interested in writing some 
quickstart guide with a supported hardware list that included professional, 
possibly not too expensive, analog input cards.

I'd like to do some experiments with GSM/GPRS protocols analysis and I have 
the necessary protocol information, but I lack radio waves capturing 
skills. Once I'm setup with the necessary hardware and drivers, I can 
provide all the results of my experiments to the list.

One more thing: I'm OpenBSD user and I code mainly for OpenBSD OS. 
Therefore I'm interested in making a port of gnuradio for OpenBSD. As soon 
as I can test wether the software actually works, I'll post a patch back to 
the list.

Thanks for the support,


Giacomo Cariello, address@hidden
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