Date: Fri, 6 Apr 2001 11:18:31 -0500 From: Joe Thomas <joe_thomas@cnt.com> To: 'Alex Huppenthal' <alex@aspenworks.com>, "Archinaco, Chris" <Chris.Archinaco@marconi.com> Cc: freebsd-atm@FreeBSD.ORG Subject: RE: SR100069960 - Linux resources Message-ID: <67DB78CE91D7D41190A100508BFDF5E051EF19@esply03.cnt.com>
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The microcode was embedded as a .h structure sometime in mid/late FBSD 3.x so no more having to download the "correct" version. To the best of my knowledge, the microcode used has not changed since we released the driver. Any improvement you see in your problem by backing down to FBSD 3.5 will be because of IP changes between 3.5 and 4.X, not from microcode or device driver changes. [The problems in the device driver between 3.5/4.0 and 4.1+ were because of mbuf structure changes which caused some problems with how the driver reserves space for passing tokens/etc. with the buffers, and with a corresponding change that caused a problem with how we used some space in the pkthdr structure where our assumptions about who and when those fields were used were no longer valid. The driver doesn't and never did try to do IP fragmentation. Someone mentioned examining the MTU size. This would be on the IPATM interface -- check with 'ifconfig -a'.] Joe -----Original Message----- From: Alex Huppenthal [mailto:alex@aspenworks.com] Sent: Friday, April 06, 2001 11:07 AM To: Joe Thomas; Archinaco, Chris Cc: freebsd-atm@FreeBSD.ORG Subject: Re: SR100069960 - Linux resources Yes, thank you for your suggestion on how to debug the driver via mbuf dumps. I can only hope I'm able to do that. :-) Its been many moons since I did any kernal debugging. Perhaps Chis at Marconi can shed some light on microcode revs too. Perhaps I'm using downloadable microcode that's not the right revision. I know people have said 3.5 FreeBSD runs the ATM PCA200e well. Perhaps I should just move back to that OS.. Forward sounds better though. ----- Original Message ----- From: "Joe Thomas" <joe_thomas@cnt.com> To: "'Alex Huppenthal'" <alex@aspenworks.com>; "Archinaco, Chris" <Chris.Archinaco@marconi.com> Cc: <freebsd-atm@FreeBSD.ORG> Sent: Friday, April 06, 2001 9:49 AM Subject: RE: SR100069960 - Linux resources > > The API for the 200E line of adapters is available as > ftp://ftp.fore.com/pub/docs/port/aali.pdf. I just checked and > it is dated May 1997. This document never did list what the > changes from microcode rev to rev were, they simply put out > a new document. Quite some time ago, Fore posted info on obtaining > driver source and documentation for their new HE line of adapters. > The HE is not really an API since you'd be talking straight to the > adapters registers, etc. as opposed to talking to a microcode app > on the 200E line. I assume someone actively doing HE development > on Linux could point you to the right specs, else someone at Macroni, > and if all else fails, I could go through my archives but that would > take some time to do... > > [Having done the initial FreeBSD FORE driver, I can attempt to > answer questions as my job/time permits. I do not have any access > to ATM equipment which would allow me to test anything, let alone > do any kind of debug/development work. Fortunately, there have been > several other folks who are active on the list that have stepped up > to the task so hats off to them! Did you see the comments I replied > with yesterday about examining IP mbufs as they come into ipatm_output()? > This would be the place to start determining who's doing the fragmenting.] > > Joseph Thomas > > -----Original Message----- > From: Alex Huppenthal [mailto:alex@aspenworks.com] > Sent: Friday, April 06, 2001 10:32 AM > To: Archinaco, Chris > Cc: freebsd-atm@FreeBSD.ORG > Subject: Re: SR100069960 - Linux resources > > > Chris, > > Thanks a million for this info. I'm still stuggling a bit with the BSD > driver and wonder if you can shed some light on how the ForeRunner card > actually operates now days. Is there a place we can look to find > documentation on the API to the card? Perhaps including a list of functional > changes made to PCA200E recently? > > I'm excited about using this card in a number of installations. Currently, > the FreeBSD version of the driver seems to fragment PDUs in a way which > Xedia routers (lucent) interpret as a 'tiny fragment' attack. At that point > they discard the entire PDU. > > New development is going on and I just wonder if you have information which > could verify how things work. > > I'm copying the group which is currently very interested in making FreeBSD > a high performance platform using your ATM PCI solution. > > Thank you, > > Alex > > PS: to listen in on the discussion about FreeBSD and ATM.. Send an email to: > mailto:subscribe-freebsd-atm@freebsd.org > > > ----- Original Message ----- > From: "Archinaco, Chris" <Chris.Archinaco@marconi.com> > To: <alex@aspenworks.com> > Sent: Wednesday, March 14, 2001 2:41 PM > Subject: FW: SR100069960 - Linux resources > > > > > Hi Alex, > > > > > > Here are the Linux resources I was telling you about. I asked the > > > TSE who was running the PCA on Linux about FreeBSD but he told me that > he > > > had never actually tried it with our adapter. Let me know if you have > any > > > problems getting the source via Tactics Online. Let me know if you have > > > any questions. > > > > > > > > > LINUX Adapter code for Marconi ATM adapters. > > > The following are listed as a convenience for persons interested in > LINUX > > > drivers available for Marconi ATM Cards. Marconi assumes no liability > for > > > the utilization of any of the software referenced. > > > The referencing of this software should not be construed as an > endorsement > > > by Marconi for the use of the software or appropriateness of purpose for > > > any particular task. > > > These are not the only drivers available. > > > > > > HE-series card driver: > > > <ftp://ftp.cmf.nrl.navy.mil/pub/chas/linux-atm>; > > > > > > PCA200E card driver: > > > <http://os.inf.tu-dresden.de/pca200e/>; > > > > > > LE25/155 card driver: > > > <http://frontpage.hypermall.com/linuxatm/forerunner_le_25.htm>; > > > > > > Linux ATM Resources (Help on installation): > > > <http://frontpage.hypermall.com/linuxatm/>; > > > > > > Hope this helps, > > > > > > Chris > > > > > > Chris Archinaco > > > Level 2 Technical Support Engineer - Edge Products > > > Marconi Services > > > phone: (800) 671-3673 > > > fax: (724) 742-6275 > > > email: chris.archinaco@marconi.com > > > URL: http://www.marconi.com > > > Tactics Online: http://tactics.marconi.com > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-atm" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-atm" in the body of the message
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