June 2005 - ixp1200 - lists.cs.princeton.edu

2xxx version of Network Systems Design finally published!
by Douglas Comer 19 Jun '05

19 Jun '05

I know several of you have been waiting for the 2xxx version of Network Systems Design. The publisher received Camera Ready Copy last July (yes, 11 months ago). Unfortunately, the book was lost for nearly 10 months because the editor had a few problems. I have finally received the first copy of the book, which means it will be in bookstores this week. Doug

1 0

Re: contents of ixp1200 digest
by Somu Ghosh 16 Jun '05

16 Jun '05

The IXP1200 is different from 2400 is three main ways. 1. The Rx/TX engine is totally different. So for migration you should rewrite your code for send and rx. Framing code will be the same, so 64 quad words format still remain the same. All you need to do is schedule receive and transmit engines. My suggestion would be to use the default rx and tx that comes with 2400 and fit it into your module 2. Memory map is radically different. First of all the memory calculations would have to be changed. For Eg, DRAM has addresses like 1000, 1004, 1008, or something like that. That is it is byte memory and not word memory. So you would have to align yourself very clearly. writing something to 1000 and 1001 as SRAM (i think they have chnaged the name) addresses would not give you the same effect in SRAM (ixp1200). Similar rule apply for SDRAM 3. Efficient Memory Route. You have the advantage of next neighbor and higher scratch along with double DMA size. You may want to use these features for additional performance boost, but if you are looking for portability, you may want to skip this step. All the best in your efforts., Love, Somu

2 1

RE: [ixp1200] Migration of IXP12XX to IXP2XXX
by Mathieu Bertrand 13 Jun '05

13 Jun '05

-----Original Message----- From: David Mentre [mailto:Mentre@tcl.ite.mee.com] Sent: lundi 13 juin 2005 08:49 To: 'IXP1200 Developer's List' Subject: RE: [ixp1200] Migration of IXP12XX to IXP2XXX > From: Wong Kim Sing [mailto:wongks@i2r.a-star.edu.sg] > Sent: Monday, June 13, 2005 9:38 AM > It's possible to do so without > rewriting the code and still working in the same application? No, you'll have to rewrite the code. The assembler is different. Close to ixp1200 put different. As I said previously, I have not ported a code from ixp1200 to ixp2000 so I can't tell about the extent of needed modifications. Yours, d. -- David MENTRE <mentre(a)tcl.ite.mee.com> - Research engineer (Ph.D.) Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab Phone: +33 2 23 45 58 29 / Fax: +33 2 23 45 58 59 http://www.mitsubishi-electric-itce.fr Hi all, Well, I worked first with the ixp1200 before the ixp2400. The µcrode is nearly the same so you can rather easily port the code... some instructions have changed so it should be considered. However in order to correctly map and use the HW, an ixp2400 code is really different from an ixp1200 one. Many features were added (next neighbour registers, qarray, local memory, CAM) and so, for a standard use, the ixp2400 code is supposed to be developped with a pipeline approach. Regards, Mathieu ---------------- Mathieu BERTRAND Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab Phone: +33 2 23 45 58 31 / Fax: +33 2 23 45 58 59 E-mail : bertrand(a)tcl.ite.mee.com

3 4

RE: [ixp1200] Migration of IXP12XX to IXP2XXX
by David Mentre 13 Jun '05

13 Jun '05

> From: Wong Kim Sing [mailto:wongks@i2r.a-star.edu.sg] > Sent: Monday, June 13, 2005 9:38 AM > It's possible to do so without > rewriting the code and still working in the same application? No, you'll have to rewrite the code. The assembler is different. Close to ixp1200 put different. As I said previously, I have not ported a code from ixp1200 to ixp2000 so I can't tell about the extent of needed modifications. Yours, d. -- David MENTRE <mentre(a)tcl.ite.mee.com> - Research engineer (Ph.D.) Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab Phone: +33 2 23 45 58 29 / Fax: +33 2 23 45 58 59 http://www.mitsubishi-electric-itce.fr

1 0

RE: [ixp1200] Migration of IXP12XX to IXP2XXX
by David Mentre 13 Jun '05

13 Jun '05

Hello Wong, > From: Wong Kim Sing [mailto:wongks@i2r.a-star.edu.sg] > Sent: Monday, June 13, 2005 5:42 AM > Have any one tried to migrate their source code from IXP12XX > to IXP2XXX? If > yes, do I need to make a lot of changes to the code after migration? We have not migrated an application but decided to rewrote it completely from scratch. While the assembler is pretty similar, Intel has made a number of architectural enhancements and to exploit them it is needed to rethink one's application. YMMV. We are not using Intel micro-blocks (except for reception and transmission blocks). Yours, d. -- David MENTRE <mentre(a)tcl.ite.mee.com> - Research engineer (Ph.D.) Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab Phone: +33 2 23 45 58 29 / Fax: +33 2 23 45 58 59 http://www.mitsubishi-electric-itce.fr

2 1

Migration of IXP12XX to IXP2XXX
by Wong Kim Sing 12 Jun '05

12 Jun '05

Hello Everybody, Have any one tried to migrate their source code from IXP12XX to IXP2XXX? If yes, do I need to make a lot of changes to the code after migration? And if no one had done this before, is it possible to do it based on your experience? Thank a lot for your help. Best regards, Mike Wong.

1 0