RE: ubsec hw accelerator and DMA Error

[Frédéric Donnat]

Prashant,

We have another mechanism for memory management without many alloc/free and 
buffer copy.
Moreover we found that the driver had some problem for DH and other algorythm.
So, we simply made an other driver... ;)
It may be better now, but i have not test it.

But if you do not stress the driver this should not happened.

If i have enough time i will try to have a look at this (as we have broadcom 
linux SDK). But tell me which driver revision you use.

Fred

-Original Message-
From:   [EMAIL PROTECTED] on behalf of Prashant Kumar
Sent:   Wed 3/2/2005 9:27 PM
To: openssl-dev@openssl.org
Cc: 
Subject:RE: ubsec hw accelerator and DMA Error
Frederic,
 
Thank you for your input. I was wondering how did you guys fix the problem in 
the driver if it is not freeing up the memory fast enough? If the information 
is propriatary, never mind.
 
Thank you again for your help.

Regards,
Prashant.

Frédéric Donnat <[EMAIL PROTECTED]> wrote:
Hi,

You can also use openssl s_server tool to test your engine. ;)

regards

Fred


-Original Message-
From: [EMAIL PROTECTED] on behalf of Prashant Kumar
Sent: Tue 3/1/2005 11:05 PM
To: openssl-dev@openssl.org
Cc: 
Subject: RE: ubsec hw accelerator and DMA Error
Frederic,

I am not even stressing the driver. I have written a small SSL server program 
for testing my hardware accelerator and I see this problem.

There may be some problem with the driver, let me dig more into it.

Thank you so much for your help. I will update you with my progress :).

Regards,
Prashant.

Frédéric Donnat wrote:
Hi,

I have no knowledge of VXWorks platform, but we encoutered the same problem 
when coding a linux driver for BCM chip.
We encouter this on slow machine, with slow PCI and around 128 Mb of RAM, when 
stressing the driver.
In fact the driver create all kernel structure and allocate memory faster than 
it can free it, producing this DMA error.

Do you have this ERROR when stressing the driver?

Hope it could help.

Fred


-Original Message-
From: [EMAIL PROTECTED] on behalf of Prashant Kumar
Sent: Tue 3/1/2005 9:43 PM
To: openssl-users@openssl.org; openssl-dev@openssl.org
Cc: 
Subject: ubsec hw accelerator and DMA Error
Hello All,

I am trying to use ubsec hw accelerator with openssl and I get a DMA Error from 
the UBSEC when I try to run the function "ubsec_mod_exp". Any idea ? I am 
running this on a VXWORKS platform.

Any help is appreciated.

Thank you,
Prashant.




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RE: ubsec hw accelerator and DMA Error

[Prashant Kumar]

Frederic,
 
Thank you for your input. I was wondering how did you guys fix the problem in the driver if it is not freeing up the memory fast enough? If the information is propriatary, never mind.
 
Thank you again for your help.
Regards,
Prashant.
Frédéric Donnat <[EMAIL PROTECTED]> wrote:
Hi,You can also use openssl s_server tool to test your engine. ;)regardsFred-Original Message-From: [EMAIL PROTECTED] on behalf of Prashant KumarSent: Tue 3/1/2005 11:05 PMTo: openssl-dev@openssl.orgCc: Subject: RE: ubsec hw accelerator and DMA ErrorFrederic,I am not even stressing the driver. I have written a small SSL server program for testing my hardware accelerator and I see this problem.There may be some problem with the driver, let me dig more into it.Thank you so much for your help. I will update you with my progress :).Regards,Prashant.Frédéric Donnat <[EMAIL PROTECTED]>wrote:Hi,I have no knowledge of VXWorks platform, but we encoutered the same problem when coding a linux driver for BCM chip.We encouter this on slo
 w
 machine, with slow PCI and around 128 Mb of RAM, when stressing the driver.In fact the driver create all kernel structure and allocate memory faster than it can free it, producing this DMA error.Do you have this ERROR when stressing the driver?Hope it could help.Fred-Original Message-From: [EMAIL PROTECTED] on behalf of Prashant KumarSent: Tue 3/1/2005 9:43 PMTo: openssl-users@openssl.org; openssl-dev@openssl.orgCc: Subject: ubsec hw accelerator and DMA ErrorHello All,I am trying to use ubsec hw accelerator with openssl and I get a DMA Error from the UBSEC when I try to run the function "ubsec_mod_exp". Any idea ? I am running this on a VXWORKS platform.Any help is appreciated.Thank you,Prashant._ Do you Yahoo!?Yahoo! Mail - Find what you need with new enhanced search. Learn more. > ATTACHMENT part 2
 application/ms-tnef name=winmail.dat__Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __OpenSSL Project http://www.openssl.orgDevelopment Mailing List openssl-dev@openssl.orgAutomated List Manager [EMAIL PROTECTED]
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RE: ubsec hw accelerator and DMA Error

[Frédéric Donnat]

Hi,

You can also use openssl s_server tool to test your engine. ;)

regards

Fred


-Original Message-
From:   [EMAIL PROTECTED] on behalf of Prashant Kumar
Sent:   Tue 3/1/2005 11:05 PM
To: openssl-dev@openssl.org
Cc: 
Subject:RE: ubsec hw accelerator and DMA Error
Frederic,
 
I am not even stressing the driver. I have written a small SSL server program 
for testing my hardware accelerator and I see this problem.
 
There may be some problem with the driver, let me dig more into it.
 
Thank you so much for your help. I will update you with my progress :).
 
Regards,
Prashant.

Frédéric Donnat <[EMAIL PROTECTED]> wrote:
Hi,

I have no knowledge of VXWorks platform, but we encoutered the same problem 
when coding a linux driver for BCM chip.
We encouter this on slow machine, with slow PCI and around 128 Mb of RAM, when 
stressing the driver.
In fact the driver create all kernel structure and allocate memory faster than 
it can free it, producing this DMA error.

Do you have this ERROR when stressing the driver?

Hope it could help.

Fred


-Original Message-
From: [EMAIL PROTECTED] on behalf of Prashant Kumar
Sent: Tue 3/1/2005 9:43 PM
To: openssl-users@openssl.org; openssl-dev@openssl.org
Cc: 
Subject: ubsec hw accelerator and DMA Error
Hello All,

I am trying to use ubsec hw accelerator with openssl and I get a DMA Error from 
the UBSEC when I try to run the function "ubsec_mod_exp". Any idea ? I am 
running this on a VXWORKS platform.

Any help is appreciated.

Thank you,
Prashant.




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RE: ubsec hw accelerator and DMA Error

[Prashant Kumar]

Frederic,
 
I am not even stressing the driver. I have written a small SSL server program for testing my hardware accelerator and I see this problem.
 
There may be some problem with the driver, let me dig more into it.
 
Thank you so much for your help. I will update you with my progress :).
 
Regards,
Prashant.Frédéric Donnat <[EMAIL PROTECTED]> wrote:
Hi,I have no knowledge of VXWorks platform, but we encoutered the same problem when coding a linux driver for BCM chip.We encouter this on slow machine, with slow PCI and around 128 Mb of RAM, when stressing the driver.In fact the driver create all kernel structure and allocate memory faster than it can free it, producing this DMA error.Do you have this ERROR when stressing the driver?Hope it could help.Fred-Original Message-From: [EMAIL PROTECTED] on behalf of Prashant KumarSent: Tue 3/1/2005 9:43 PMTo: openssl-users@openssl.org; openssl-dev@openssl.orgCc: Subject: ubsec hw accelerator and DMA ErrorHello All,I am trying to use ubsec hw accelerator with openssl and I get a DMA Error from the UBSEC when I try to run the function "ubsec_mod_exp". Any idea ? I am running this o
 n a
 VXWORKS platform.Any help is appreciated.Thank you,Prashant._ Do you Yahoo!?Yahoo! Mail - Find what you need with new enhanced search. Learn more. > ATTACHMENT part 2 application/ms-tnef name=winmail.dat__Do You Yahoo!?Tired of spam?  Yahoo! Mail has the best spam protection around http://mail.yahoo.com 

RE: ubsec hw accelerator and DMA Error

[Frédéric Donnat]

Hi,

I have no knowledge of VXWorks platform, but we encoutered the same problem 
when coding a linux driver for BCM chip.
We encouter this on slow machine, with slow PCI and around 128 Mb of RAM, when 
stressing the driver.
In fact the driver create all kernel structure and allocate memory faster than 
it can free it, producing this DMA error.

Do you have this ERROR when stressing the driver?

Hope it could help.

Fred


-Original Message-
From:   [EMAIL PROTECTED] on behalf of Prashant Kumar
Sent:   Tue 3/1/2005 9:43 PM
To: openssl-users@openssl.org; openssl-dev@openssl.org
Cc: 
Subject:ubsec hw accelerator and DMA Error
Hello All,
 
I am trying to use ubsec hw accelerator with openssl and I get a DMA Error from 
the UBSEC when I try to run the function "ubsec_mod_exp". Any idea ? I am 
running this on a VXWORKS platform.
 
Any help is appreciated.
 
Thank you,
Prashant.
 
 


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