Fix for Upload Issue (Linksys WRT54G3G-ST)

Michael · Posted: Mon May 14, 2007 9:15 am Post subject:

We got the firmware and we will be doing some testing today Smile

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Fox McCloud · EVDO Junkie Joined: 02 Dec 2006 Posts: 599

I'd be willing to risk it; could you possibly send me the firmware, wizard?

evdo-wizard · EVDO Heavy User Joined: 21 Apr 2007 Posts: 125

@Fox McCloud
Sure, I just don't want random people upgrading their router with this. I sent you a PM.

On another note, I figured out that the Linux kernel used in the 2.0.0.9 firmware is Linux 2.4.20. I'm going to download the 2.4.20 kernel and run a diff (difference) between some of the stock Linux source files and the Linksys modified source files (Linksys does not document the changes they make to source code).

From there on, I think I might make a version of Tomato firmware for the WRT54G3G-ST. This is a very clean and user friendly firmware, and I will add a mobile broadband interface to it. I'm not sure yet whether I'm going to do this though.

Michael · Posted: Mon May 14, 2007 4:40 pm Post subject:

I have to do more testing with different cards/locations, BUT I am not seeing an improvement (yet). I haven't been able to break 250Kbps on the upload yet (getting 1275Kbps on download), need to do a lot more testing in my laptops to see, but may not have a lot of time to play over the next few days.
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Fl00d_Pr0z · EVDO Junkie Joined: 08 Dec 2006 Posts: 218

I'd also like to test the firmware if you don't mind.

kinggodzilla · EVDO Fledgling Joined: 14 Jul 2005 Posts: 20

If you are looking for another tester, I have 3 of these routers and can test for you as well.

Offthegrid · EVDO Newbie Joined: 22 Apr 2007 Posts: 1

I following this thread with interest - having experienced the same kind of upload degradation with access through the router versus direct PC Access. But after suffering 4 years with Direcway/Hughesnet (having to go into work on weekends to read mail since remote access was impossible) I'm in broadband heaven!

The efforts of you guys to try to solve this problem is really appreciated by those of us who have neither time nor talent to do so.... Thanks!

CodinAndHaulin · EVDO User Joined: 19 Jan 2007 Posts: 26

evdo-wizard · EVDO Heavy User Joined: 21 Apr 2007 Posts: 125

Well, I don't think this patched firmware works quite yet.. but I'll still work on it when I have the time. The Linksys source code is messy.. somewhat hard to understand. I'm thinking of departing from the original linksys firmware, and compiling some firmware such as Tomato for the WRT54G3G, complete with Airprime drivers and a mobile broadband page on the router's website.

Maybe later I can compile Airprime into the Linksys firmware, if anyone would rather use the original firmware.

I'm also still working on a ready-to-go OpenWRT firmware... who knows what will come first. Keep your eyes open.

glacierjima · Posted: Tue May 15, 2007 7:32 pm Post subject:

I sent linksys a message to see if there was an update..at least they finally admitted there WAS a problem..only took..what 2 months for them to admit to it??
We apologize for the inconvenience that this has caused; our Product Engineers were able to validate your concern and are presently working on this. The new firmware that will address this concern will be made available on our website in the soonest possible time.

DonL · Posted: Tue May 15, 2007 9:33 pm Post subject:

Thanks EVDO-wizard for your efforts on this and I am encouraging you to continue.

I have a couple questions about the Open Source 2.00.9 tar. I definitely could not get it to make straight up. My approach (may be wrong) was to rebuild the mips toolchain first before making. I ran into problem with some path problems and a couple makes in subdirectories that didn't happen automatically. But the problem I quit on was lack of source for diag_led.c. I know that file is in OpenWRT but not in the linksys tar ball. How did you overcome? Did you just use the toolchain and uClibc binaries that came with the source or did you rebuild your toolchain?

I have had some experience with usb serial driver code and pc-card interface code and I thought I might play a little.

evdo-wizard · EVDO Heavy User Joined: 21 Apr 2007 Posts: 125

I didn't have to rebuild the toolchain, and I didn't have the same problems that you're having. This is how I compiled my firmware:

download source code from:
ftp://ftp.linksys.com/opensourcecode/wrt54g3g-st/2.00.9/WRT54G3G-ST_v2.00.9_US_source_code_with_toolchain_20070208.tgz

CD to directory with tarball, then extract the source

evdo-wizard · EVDO Heavy User Joined: 21 Apr 2007 Posts: 125

I'm working on backporting the Airprime card drivers (with patches) from Linux 2.6 to the linksys's linux 2.4 kernel... this should be interesting.

DonL · Posted: Wed May 16, 2007 7:43 pm Post subject:

Thanks... I will retry by using pre-built toolchain and uClibc libraries.

Before I read your post I did get it to compile but only by modifying to use glibc only and substituting OpenWRT diag_led.c. Unfortunately, that left a bin 2.1 times larger than the original which may not fit on the router.

Another question:
It would be nice to do live debug and that is difficult on remote MIPS based router. However, It may be possible to do it by booting the bin in a MIPS emulator. So the question is does any one know which MIPS processor is in the Router (i.e. MIPS R4000, etc). Have you tried to run MIPS linux in any of the free emulators like QEMU that say they support MIPS 32/64 full system operations. Just thinking out loud....

DonL · Posted: Wed May 16, 2007 8:16 pm Post subject:

Also, I noticed Open GPL source for the DLink DIR450 Mobile Broadband router at:
ftp://ftp.dlink.com/GPL/DIR-450/

Since this mobile PC card router also runs on Linux it may be worth comparing source for differences looking for potential upload choking points.

Oddly enough I also saw a 'KR1' directory with GPL source. I wonder if the KR1 Mobile broadband router is really a DLink router?