Date: Fri, 6 Apr 2001 18:36:43 -0600 From: "Alex Huppenthal" <alex@aspenworks.com> To: "Joe Thomas" <joe_thomas@cnt.com>, "Archinaco, Chris" <Chris.Archinaco@marconi.com> Cc: <freebsd-atm@FreeBSD.ORG> Subject: Re: SR100069960 - Linux resources Message-ID: <001501c0befa$d556a260$1800a8c0@d7k> References: <67DB78CE91D7D41190A100508BFDF5E051EF19@esply03.cnt.com>
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MTU shows up as 48. Can't change the MTU with ifconfig -Alex Thanks to everyone for the insight and information today. ----- 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 10:18 AM Subject: RE: SR100069960 - Linux resources > > 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 when those fields were used were no longer valid.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 > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-atm" in the body of the message
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