[PATCH v4 0/2] Improve DMA chaining for ahash requests

[Herbert Xu]

On Wed, Oct 05, 2016 at 09:56:31AM +0200, Romain Perier wrote:
> This series contain performance improvement regarding ahash requests.
> So far, ahash requests were systematically not chained at the DMA level.
> However, in some case, like this is the case by using IPSec, some ahash
> requests can be processed directly by the engine, and don't have
> intermediaire partial update states.
> 
> This series firstly re-work the way outer IVs are copied from the SRAM
> into the dma pool. To do so, we introduce a common dma pool for all type
> of requests that contains outer results (like IV or digest). Then, for
> ahash requests that can be processed directly by the engine, outer
> results are copied from the SRAM into the common dma pool. These requests
> are then allowed to be chained at the DMA level.
> 
> 
> Benchmarking results with iperf throught IPSec
> ==============================================
> 		ESP			AH
> 
> Before		343 Mbits/s		492 Mbits/s
> After		422 Mbits/s		577 Mbits/s
> Improvement	+23%			+17%
> 
> Romain Perier (2):
>   crypto: marvell - Use an unique pool to copy results of requests
>   crypto: marvell - Don't break chain for computable last ahash requests
> 
>  drivers/crypto/marvell/cesa.c   |  4 ---
>  drivers/crypto/marvell/cesa.h   |  5 ++--
>  drivers/crypto/marvell/cipher.c |  8 +++--
>  drivers/crypto/marvell/hash.c   | 65 +++++++++++++++++++++++++++++++----------
>  drivers/crypto/marvell/tdma.c   | 28 +++++++++---------
>  5 files changed, 70 insertions(+), 40 deletions(-)

All applied.  Thanks.
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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