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  1. May 02, 2007
    • Herbert Xu's avatar
      [CRYPTO] templates: Pass type/mask when creating instances · ebc610e5
      Herbert Xu authored 
      

This patch passes the type/mask along when constructing instances of
templates.  This is in preparation for templates that may support
multiple types of instances depending on what is requested.  For example,
the planned software async crypto driver will use this construct.

For the moment this allows us to check whether the instance constructed
is of the correct type and avoid returning success if the type does not
match.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      ebc610e5
    • Herbert Xu's avatar
      [CRYPTO] tcrypt: Use async blkcipher interface · 6158efc0
      Herbert Xu authored 
      

This patch converts the tcrypt module to use the asynchronous block cipher
interface.  As all synchronous block ciphers can be used through the async
interface, tcrypt is still able to test them.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      6158efc0
    • Herbert Xu's avatar
      [CRYPTO] api: Add async block cipher interface · 32e3983f
      Herbert Xu authored 
      

This patch adds the frontend interface for asynchronous block ciphers.
In addition to the usual block cipher parameters, there is a callback
function pointer and a data pointer.  The callback will be invoked only
if the encrypt/decrypt handlers return -EINPROGRESS.  In other words,
if the return value of zero the completion handler (or the equivalent
code) needs to be invoked by the caller.

The request structure is allocated and freed by the caller.  Its size
is determined by calling crypto_ablkcipher_reqsize().  The helpers
ablkcipher_request_alloc/ablkcipher_request_free can be used to manage
the memory for a request.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      32e3983f
    • Herbert Xu's avatar
      [CRYPTO] api: Proc functions should be marked as unused · 03f5d8ce
      Herbert Xu authored 
      

The proc functions were incorrectly marked as used rather than unused.
They may be unused if proc is disabled.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      03f5d8ce
  3. Apr 28, 2007
  5. Mar 31, 2007
  7. Mar 20, 2007
  9. Feb 12, 2007
  11. Feb 06, 2007
  13. Feb 05, 2007
  15. Dec 13, 2006
  17. Dec 11, 2006
  19. Dec 07, 2006
  21. Nov 22, 2006
    • David Howells's avatar
      WorkStruct: Pass the work_struct pointer instead of context data · 65f27f38
      David Howells authored 
      

Pass the work_struct pointer to the work function rather than context data.
The work function can use container_of() to work out the data.

For the cases where the container of the work_struct may go away the moment the
pending bit is cleared, it is made possible to defer the release of the
structure by deferring the clearing of the pending bit.

To make this work, an extra flag is introduced into the management side of the
work_struct.  This governs auto-release of the structure upon execution.

Ordinarily, the work queue executor would release the work_struct for further
scheduling or deallocation by clearing the pending bit prior to jumping to the
work function.  This means that, unless the driver makes some guarantee itself
that the work_struct won't go away, the work function may not access anything
else in the work_struct or its container lest they be deallocated..  This is a
problem if the auxiliary data is taken away (as done by the last patch).

However, if the pending bit is *not* cleared before jumping to the work
function, then the work function *may* access the work_struct and its container
with no problems.  But then the work function must itself release the
work_struct by calling work_release().

In most cases, automatic release is fine, so this is the default.  Special
initiators exist for the non-auto-release case (ending in _NAR).


Signed-Off-By: default avatarDavid Howells <dhowells@redhat.com>
      65f27f38
  23. Oct 16, 2006
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  29. Sep 23, 2006