Re: Padlock accelerated SHA on Via C7

2009-04-16 Thread John Arnold
> Specifically: Via botched the implementation - their instruction set > does not allow the data to be hashed to be fed in multiple chunks, which > is how most applications work. > > There are ways around this but they are too ugly to mention. > > -d > > OK that makes sense! Thanks to everyo

Re: Padlock accelerated SHA on Via C7

2009-04-15 Thread Damien Miller
On Tue, 14 Apr 2009, Theo de Raadt wrote: > > Has anybody been able to get Padlock accelerated SHA1 working on a C7 > > or is this not currently possible? > > It isn't worth using it. The overhead is too high. Specifically: Via botched the implementation - their instruction set does not allow t

Re: Padlock accelerated SHA on Via C7

2009-04-15 Thread Guido Tschakert
Guido Tschakert schrieb: > John Arnold schrieb: >>> It isn't worth using it. The overhead is too high. >>> >>> >> OK, thanks for the response. >> >> That being the case, can anybody give me any advice on what hardware I would >> need to achieve gigabit VPN throughput (aes/3des & md5/sha1) with ip

Re: Padlock accelerated SHA on Via C7

2009-04-15 Thread Guido Tschakert
John Arnold schrieb: >> It isn't worth using it. The overhead is too high. >> >> > > OK, thanks for the response. > > That being the case, can anybody give me any advice on what hardware I would > need to achieve gigabit VPN throughput (aes/3des & md5/sha1) with ipsec? > Hi, my max throughpu

Re: Padlock accelerated SHA on Via C7

2009-04-15 Thread John Arnold
> It isn't worth using it. The overhead is too high. > > OK, thanks for the response. That being the case, can anybody give me any advice on what hardware I would need to achieve gigabit VPN throughput (aes/3des & md5/sha1) with ipsec?

Re: Padlock accelerated SHA on Via C7

2009-04-14 Thread Theo de Raadt
> Has anybody been able to get Padlock accelerated SHA1 working on a C7 > or is this not currently possible? It isn't worth using it. The overhead is too high.

Re: Padlock accelerated SHA on Via C7

2009-04-14 Thread John Bartoszewski
A comparsion with more recient install. OpenBSD 4.5-current (GENERIC) #48: Sun Apr 12 23:43:52 MDT 2009 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC cpu0: VIA C7-M Processor 1200MHz ("CentaurHauls" 686-class) 1.20 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,P

Padlock accelerated SHA on Via C7

2009-04-14 Thread John Arnold
Hi All, Has anybody been able to get Padlock accelerated SHA1 working on a C7 or is this not currently possible? The CPU has the capability: OpenBSD 4.4 (GENERIC) #1021: Tue Aug 12 17:16:55 MDT 2008 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC cpu0: VIA C7 Processor 1800MHz