Re: [PATCH 1/1 v2] crypto: Add CryptoAPI User Interface Support

[Evgeniy Polyakov <johnpol@xxxxxxxxxxx>]

Hi.

On Thu, Jun 12, 2008 at 01:54:00PM -0700, Loc Ho (lho@xxxxxxxx) wrote:
> This is CryptoAPI user space interface support patch v2. This version
> includes:
> 
> 1. a file descriptor per tfm
> 2. Direct I/O for user data buffer (with option for single mapping)
> 3. algorithm properties is set via I/O control call
> 4. Per buffer operation is operated via I/O control call

Number of overall moments:
 * your mailer heavily mangled patch, please fix it or attach patch next
 	time
 * be ready to defend, why /dev/crypto should be char device and not
 	misc, also why it is not a syscall :)
 * overall approach of multiple copy_from_user is noticebly slower than
 	single copy_from_user of the whole structure and they parse it
	according to internal fields
 * the same applies to multiple allocations: try to avoid it as much as
 	possible and allocate whole structure in one go

-- 
	Evgeniy Polyakov
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