Date: Fri, 25 Feb 2011 14:51:10 -0500 From: Etienne Robillard <erob@gthcfoundation.org> To: bschmidt@freebsd.org Cc: freebsd-stable@freebsd.org Subject: Re: urtw0: could not allocate USB transfers Message-ID: <4D68082E.30207@gthcfoundation.org> In-Reply-To: <201102251331.37589.bschmidt@freebsd.org> References: <4D66C4CB.1060207@2egos.de> <201102251218.12664.bschmidt@freebsd.org> <4D6796C0.6040402@gthcfoundation.org> <201102251331.37589.bschmidt@freebsd.org>
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On 25/02/11 07:31 AM, Bernhard Schmidt wrote: > On Friday, February 25, 2011 12:47:12 Etienne Robillard wrote: > >> On 25/02/11 06:18 AM, Bernhard Schmidt wrote: >> >>> On Friday, February 25, 2011 11:03:04 Etienne Robillard wrote: >>> >>> >>>> On 25/02/11 04:11 AM, Bernhard Schmidt wrote: >>>> >>>> >>>>> On Thursday, February 24, 2011 21:51:23 joseph wrote: >>>>> >>>>> >>>>> >>>>>> Hello, >>>>>> >>>>>> i decided to get my laptop wlan via usb because my internal device isn't >>>>>> supported yet. >>>>>> The usb device is a logilink WL0006 unit its vendorid is 0x0bda and the >>>>>> productid says 0x8187. >>>>>> My search results say that this device depends on a RTL8187 chipset. >>>>>> I tried both, load the kernel module at boot time and compile kernel >>>>>> withe urtw, but i get the same output at dmesg >>>>>> >>>>>> device_attach: urtw0 attach returned 6 >>>>>> urtw0: <vendor 0x0bda product 0x8187, class 0/0, rev 2.00/2.00, addr 2> >>>>>> on usbus3 >>>>>> urtw0: could not allocate USB transfers, err=USB_ERR_NO_PIPE >>>>>> device_attach: urtw0 attach returned 6 >>>>>> >>>>>> im running FreeBSD 8.1-RELEASE-p2 amd64. >>>>>> >>>>>> What might be the reason for this error? >>>>>> Thanks for all hints. >>>>>> >>>>>> >>>>>> >>>>> Well, I have no clue about USB.. but this smells like one of the >>>>> endpoints is 'not there'. At least I can't find any reference to >>>>> it in the Linux driver. Wanna give attached patch a shot? >>>>> >>>>> >>>>> >>>> Hi Bernard, >>>> >>>> For rt287x based cards, you can try using rt28700 chipset instead of >>>> urtw0 on >>>> FreeBSD 8. >>>> >>>> The former is not in the stable src tree, but could be retrieved from here: >>>> >>>> https://gthc.org/distfiles/freebsd/rt2870_fbsd8.tar.gz >>>> >>>> Any takers to make module rt28700 (if_rt2870) officially part of the >>>> FreeBSD src tree? >>>> >>>> >>> I'm a bit confused now, shouldn't the rt2870 be supported by run(4)? On >>> a site-note, this is Ralink chipset not a Realtek one. >>> >>> >>> >> I believe this is a different implementation for RT8187 usb network >> adapters than >> run(4). However in my view I found urtw0 buggy, but would certainly take >> a look at run(4) to >> compare the results with wireless networking agaisnt the other driver >> (rt28700). >> > Yeah, urtw(4) has a few flaws.. > > - urtw(4): Realtek RTL8187B/RTL8187L > - rum(4): Ralink RT2501/RT2601 > - run(4): Ralink RT2700/RT2800/RT3000 > > So it seems the driver you've posted conflicts with run(4). From a > quick glance at it, it seems to support 11n? If so, can I talk you > into working on getting those bits merged? > Thanks! > > -- > Bernhard > _______________________________________________ > Thanks but I'm not sure I'd be helpful there as I have very moderate knowledge in USB and Wifi programming... Also why is "l1n" a important feature missing from the rt2870 driver ? I achieved very good rates with this card without it :) Etienne -- Etienne Robillard Company: Green Tea Hackers Club Occupation: Software Developer (and CEO) E-mail: erob@gthcfoundation.org Work phone: 450-936-2123 Website (Company): https://gthc.org/ Website (Blog): https://gthc.org/blog/ PGP public key fingerprint: F2A9 32EA 8E7C 460F 1728 A1A7 649C 7F17 A086 DDEC During times of universal deceit, telling the truth becomes a revolutionary act. -- George Orwell If a free society cannot help the many who are poor, it cannot save the few who are rich. -- John F. Kennedy
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