Commit graph

120 commits

Author SHA1 Message Date
Linus Torvalds
0aaf2146ec This pull contains one set of changes: a conversion of the crypto DocBook
to Sphinx.
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJYVCNwAAoJEI3ONVYwIuV66foP/AnsYE+6U0Zfvgz8Sn59AdQ2
 co/fGocHETcsMhDKfQZw/lrznpxU4gY3KBj4GuBdgCryoJFH6quJdXpznBGcpExs
 SniRExUhUlyWHoH3SMXYrvUPdGB3RgQo3qXwHOoF9bHnlMpjoqPZKKdkEi6gmrqN
 Uf6cy2cLpNYXxY5LwxgYWpvntHJKT0Oedtzo8RYN730Aym0CcwgYd27pC7daiEni
 0/jRp+eMzJ8+KcJlfJboa1g9YeBa9vx+Y3sawAD3yx021EhFpw93GFdAFN5wss/M
 sLy5A5gp+NtwD1zs801mamaXOmHtgvb5qE7TWlna3gWIRaJz7Eb0YcxGHi/PFgkf
 xjsvgfiBp7EpuomU3wJl5RLV7oLv0sBSyyglMJPimfmHaHnKmU4iTpqrCrEYODCs
 XJ8lK6eBMq1UYkpEfIVEgu+VqA+s0Pfs1akw+275WlKDgMovVlO8zp0/rUjcgofS
 ESTI5O2fb/o/8qROBwtj9crpsQHbsQWRQBy9GT009T4ZhEwHa21aTkWUGqm9l2RL
 N0zLJEUBCX9u5wyZHmHULBwIT9D/Hv8AOhChKeIsZWipw2FRslUg3yJPb1OwlOIv
 1ox5QPJTsTk4FcRYqvIWpxJEO9XFKPHus6gpP2nwYF86B8hKTJZwWHi5EWHjGX1P
 Y9+FJPT3JOCIRgbmvPsK
 =DZLO
 -----END PGP SIGNATURE-----

Merge tag 'docs-4.10-2' of git://git.lwn.net/linux

Pull more documentation updates from Jonathan Corbet:
 "This converts the crypto DocBook to Sphinx"

* tag 'docs-4.10-2' of git://git.lwn.net/linux:
  crypto: doc - optimize compilation
  crypto: doc - clarify AEAD memory structure
  crypto: doc - remove crypto_alloc_ablkcipher
  crypto: doc - add KPP documentation
  crypto: doc - fix separation of cipher / req API
  crypto: doc - fix source comments for Sphinx
  crypto: doc - remove crypto API DocBook
  crypto: doc - convert crypto API documentation to Sphinx
2016-12-17 16:00:34 -08:00
Stephan Mueller
0184cfe72d crypto: doc - fix source comments for Sphinx
Update comments to avoid any complaints from Sphinx during compilation.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-12-13 16:38:05 -07:00
Baruch Siach
864e0981fd crypto: api - fix comment typo
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-01 21:06:30 +08:00
Giovanni Cabiddu
1ab53a77b7 crypto: acomp - add driver-side scomp interface
Add a synchronous back-end (scomp) to acomp. This allows to easily
expose the already present compression algorithms in LKCF via acomp.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-10-25 11:08:31 +08:00
Giovanni Cabiddu
2ebda74fd6 crypto: acomp - add asynchronous compression api
Add acomp, an asynchronous compression api that uses scatterlist
buffers.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-10-25 11:08:30 +08:00
Herbert Xu
3a01d0ee2b crypto: skcipher - Remove top-level givcipher interface
This patch removes the old crypto_grab_skcipher helper and replaces
it with crypto_grab_skcipher2.

As this is the final entry point into givcipher this patch also
removes all traces of the top-level givcipher interface, including
all implicit IV generators such as chainiv.

The bottom-level givcipher interface remains until the drivers
using it are converted.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-18 17:35:46 +08:00
Herbert Xu
4e6c3df4d7 crypto: skcipher - Add low-level skcipher interface
This patch allows skcipher algorithms and instances to be created
and registered with the crypto API.  They are accessible through
the top-level skcipher interface, along with ablkcipher/blkcipher
algorithms and instances.

This patch also introduces a new parameter called chunk size
which is meant for ciphers such as CTR and CTS which ostensibly
can handle arbitrary lengths, but still behave like block ciphers
in that you can only process a partial block at the very end.

For these ciphers the block size will continue to be set to 1
as it is now while the chunk size will be set to the underlying
block size.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-18 17:35:36 +08:00
Salvatore Benedetto
4e5f2c4007 crypto: kpp - Key-agreement Protocol Primitives API (KPP)
Add key-agreement protocol primitives (kpp) API which allows to
implement primitives required by protocols such as DH and ECDH.
The API is composed mainly by the following functions
 * set_secret() - It allows the user to set his secret, also
   referred to as his private key, along with the parameters
   known to both parties involved in the key-agreement session.
 * generate_public_key() - It generates the public key to be sent to
   the other counterpart involved in the key-agreement session. The
   function has to be called after set_params() and set_secret()
 * generate_secret() - It generates the shared secret for the session

Other functions such as init() and exit() are provided for allowing
cryptographic hardware to be inizialized properly before use

Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-06-23 18:29:56 +08:00
Giovanni Cabiddu
63044c4fd4 crypto: hash - shrink hash down to two types
Move hash to 0xe to free up the space for acomp/scomp

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-06-07 18:41:54 +08:00
Eric Biggers
6eae29e7e7 crypto: doc - document correct return value for request allocation
Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-04-15 22:35:44 +08:00
Herbert Xu
8965450987 crypto: hash - Remove crypto_hash interface
This patch removes all traces of the crypto_hash interface, now
that everyone has switched over to shash or ahash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-02-06 15:33:20 +08:00
Joonsoo Kim
110492183c crypto: compress - remove unused pcomp interface
It is unused now, so remove it.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-01-27 20:36:24 +08:00
Herbert Xu
5e4b8c1fcc crypto: aead - Remove CRYPTO_ALG_AEAD_NEW flag
This patch removes the CRYPTO_ALG_AEAD_NEW flag now that everyone
has been converted.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-08-17 16:53:53 +08:00
Herbert Xu
b0d955ba46 crypto: aead - Remove old AEAD interfaces
Now that the AEAD conversion is complete we can rip out the old
AEAD interafce and associated code.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-08-17 16:53:50 +08:00
Herbert Xu
3e90950d36 crypto: algif_aead - Temporarily disable all AEAD algorithms
As the AEAD conversion is still ongoing, we do not yet wish to
export legacy AEAD implementations to user-space, as their calling
convention will change.

This patch actually disables all AEAD algorithms because some of
them (e.g., cryptd) will need to be modified to propagate this flag.

Subsequent patches will reenable them on an individual basis.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-22 15:49:30 +08:00
Herbert Xu
edf18b9108 crypto: api - Add CRYPTO_MINALIGN_ATTR to struct crypto_alg
The struct crypto_alg is embedded into various type-specific structs
such as aead_alg.  This is then used as part of instances such as
struct aead_instance.  It is also embedded into the generic struct
crypto_instance.  In order to ensure that struct aead_instance can
be converted to struct crypto_instance when necessary, we need to
ensure that crypto_alg is aligned properly.

This patch adds an alignment attribute to struct crypto_alg to
ensure this.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-19 14:16:28 +08:00
Tadeusz Struk
3c339ab83f crypto: akcipher - add PKE API
Add Public Key Encryption API.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>

Made CRYPTO_AKCIPHER invisible like other type config options.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-17 17:03:14 +08:00
Masanari Iida
12f7c14aa6 crypto: doc - Fix typo in crypto-API.xml
This patch fix some typos found in crypto-API.xml.
It is because the file is generated from comments in sources,
so I had to fix typo in sources.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-04 15:05:08 +08:00
Herbert Xu
2d0f230fe0 crypto: aead - Rename aead_alg to old_aead_alg
This patch is the first step in the introduction of a new AEAD
alg type.  Unlike normal conversions this patch only renames the
existing aead_alg structure because there are external references
to it.

Those references will be removed after this patch.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:51 +08:00
Herbert Xu
5d1d65f8be crypto: aead - Convert top level interface to new style
This patch converts the top-level aead interface to the new style.
All user-level AEAD interface code have been moved into crypto/aead.h.

The allocation/free functions have switched over to the new way of
allocating tfms.

This patch also removes the double indrection on setkey so the
indirection now exists only at the alg level.

Apart from these there are no user-visible changes.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:53 +08:00
Herbert Xu
94f1bb15be crypto: rng - Remove old low-level rng interface
Now that all rng implementations have switched over to the new
interface, we can remove the old low-level interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-22 09:30:20 +08:00
Herbert Xu
acec27ff35 crypto: rng - Convert low-level crypto_rng to new style
This patch converts the low-level crypto_rng interface to the
"new" style.

This allows existing implementations to be converted over one-
by-one.  Once that is complete we can then remove the old rng
interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-22 09:30:14 +08:00
Herbert Xu
d0e83059a6 crypto: rng - Convert crypto_rng to new style crypto_type
This patch converts the top-level crypto_rng to the "new" style.
It was the last algorithm type added before we switched over
to the new way of doing things exemplified by shash.

All users will automatically switch over to the new interface.

Note that this patch does not touch the low-level interface to
rng implementations.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-21 10:19:57 +08:00
Stephan Mueller
06ca7f68d4 crypto: api - prevent helper ciphers from being used
Several hardware related cipher implementations are implemented as
follows: a "helper" cipher implementation is registered with the
kernel crypto API.

Such helper ciphers are never intended to be called by normal users. In
some cases, calling them via the normal crypto API may even cause
failures including kernel crashes. In a normal case, the "wrapping"
ciphers that use the helpers ensure that these helpers are invoked
such that they cannot cause any calamity.

Considering the AF_ALG user space interface, unprivileged users can
call all ciphers registered with the crypto API, including these
helper ciphers that are not intended to be called directly. That
means, with AF_ALG user space may invoke these helper ciphers
and may cause undefined states or side effects.

To avoid any potential side effects with such helpers, the patch
prevents the helpers to be called directly. A new cipher type
flag is added: CRYPTO_ALG_INTERNAL. This flag shall be used
to mark helper ciphers. These ciphers can only be used if the
caller invoke the cipher with CRYPTO_ALG_INTERNAL in the type and
mask field.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-03-31 21:21:03 +08:00
Stephan Mueller
379dcfb406 crypto: doc - remove colons in comments
As documented in Documentation/kernel-doc-nano-HOWTO.txt lines
terminated with a colon are treated as headings.

The current layout of the documentation when compiling the kernel
crypto API DocBook documentation is messed up by by treating some lines
as headings. The patch removes colons from comments that shall not be
treated as headings.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-01-20 14:44:19 +11:00
Stephan Mueller
15acabfd02 crypto: aead - add check for presence of auth tag
The AEAD decryption operation requires the authentication tag to be
present as part of the cipher text buffer. The added check verifies that
the caller provides a cipher text with at least the authentication tag.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-01-08 21:46:18 +11:00
Kees Cook
5d26a105b5 crypto: prefix module autoloading with "crypto-"
This prefixes all crypto module loading with "crypto-" so we never run
the risk of exposing module auto-loading to userspace via a crypto API,
as demonstrated by Mathias Krause:

https://lkml.org/lkml/2013/3/4/70

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-24 22:43:57 +08:00
Stephan Mueller
47ca5be9eb crypto: doc - HASH API documentation
The API function calls exported by the kernel crypto API for
message digests to be used by consumers are documented.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-13 22:31:43 +08:00
Stephan Mueller
16e61030ae crypto: doc - CIPHER API documentation
The API function calls exported by the kernel crypto API for
signle block ciphers to be used by consumers are documented.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-13 22:31:43 +08:00
Stephan Mueller
58284f0d6c crypto: doc - BLKCIPHER API documentation
The API function calls exported by the kernel crypto API for
synchronous block ciphers to be used by consumers are documented.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-13 22:31:42 +08:00
Stephan Mueller
fced7b0262 crypto: doc - AEAD API documentation
The API function calls exported by the kernel crypto API for AEAD
ciphers to be used by consumers are documented.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-13 22:31:41 +08:00
Stephan Mueller
f13ec330a7 crypto: doc - ABLKCIPHER API documentation
The API function calls exported by the kernel crypto API for
asynchronous block ciphers to be used by consumers are documented.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-13 22:31:41 +08:00
Stephan Mueller
0d7f488f03 crypto: doc - cipher data structures
The data structure of struct crypto_alg together with various other
data structures needed by cipher developers is documented wit all
parameters that can be set by a developer of a transformation. All
parameters that are internal to the crypto API are marked as such.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-13 22:31:40 +08:00
Mark Rustad
3e3dc25fe7 crypto: Resolve shadow warnings
Change formal parameters to not clash with global names to
eliminate many W=2 warnings.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-08-01 22:35:55 +08:00
Linus Torvalds
ed2d265d12 The following text was taken from the original review request:
"[RFC - PATCH 0/7] consolidation of BUG support code."
 		https://lkml.org/lkml/2012/1/26/525
 --
 
 The changes shown here are to unify linux's BUG support under
 the one <linux/bug.h> file.  Due to historical reasons, we have
 some BUG code in bug.h and some in kernel.h -- i.e. the support for
 BUILD_BUG in linux/kernel.h predates the addition of linux/bug.h,
 but old code in kernel.h wasn't moved to bug.h at that time.  As
 a band-aid, kernel.h was including <asm/bug.h> to pseudo link them.
 
 This has caused confusion[1] and general yuck/WTF[2] reactions.
 Here is an example that violates the principle of least surprise:
 
       CC      lib/string.o
       lib/string.c: In function 'strlcat':
       lib/string.c:225:2: error: implicit declaration of function 'BUILD_BUG_ON'
       make[2]: *** [lib/string.o] Error 1
       $
       $ grep linux/bug.h lib/string.c
       #include <linux/bug.h>
       $
 
 We've included <linux/bug.h> for the BUG infrastructure and yet we
 still get a compile fail!  [We've not kernel.h for BUILD_BUG_ON.]
 Ugh - very confusing for someone who is new to kernel development.
 
 With the above in mind, the goals of this changeset are:
 
 1) find and fix any include/*.h files that were relying on the
    implicit presence of BUG code.
 2) find and fix any C files that were consuming kernel.h and
    hence relying on implicitly getting some/all BUG code.
 3) Move the BUG related code living in kernel.h to <linux/bug.h>
 4) remove the asm/bug.h from kernel.h to finally break the chain.
 
 During development, the order was more like 3-4, build-test, 1-2.
 But to ensure that git history for bisect doesn't get needless
 build failures introduced, the commits have been reorderd to fix
 the problem areas in advance.
 
 [1]  https://lkml.org/lkml/2012/1/3/90
 [2]  https://lkml.org/lkml/2012/1/17/414
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJPbNwpAAoJEOvOhAQsB9HWrqYP/A0t9VB0nK6e42F0OR2P14MZ
 GJFtf1B++wwioIrx+KSWSRfSur1C5FKhDbxLR3I/pvkAYl4+T4JvRdMG6xJwxyip
 CC1kVQQNDjWVVqzjz2x6rYkOffx6dUlw/ERyIyk+OzP+1HzRIsIrugMqbzGLlX0X
 y0v2Tbd0G6xg1DV8lcRdp95eIzcGuUvdb2iY2LGadWZczEOeSXx64Jz3QCFxg3aL
 LFU4oovsg8Nb7MRJmqDvHK/oQf5vaTm9WSrS0pvVte0msSQRn8LStYdWC0G9BPCS
 GwL86h/eLXlUXQlC5GpgWg1QQt5i2QpjBFcVBIG0IT5SgEPMx+gXyiqZva2KwbHu
 LKicjKtfnzPitQnyEV/N6JyV1fb1U6/MsB7ebU5nCCzt9Gr7MYbjZ44peNeprAtu
 HMvJ/BNnRr4Ha6nPQNu952AdASPKkxmeXFUwBL1zUbLkOX/bK/vy1ujlcdkFxCD7
 fP3t7hghYa737IHk0ehUOhrE4H67hvxTSCKioLUAy/YeN1IcfH/iOQiCBQVLWmoS
 AqYV6ou9cqgdYoyila2UeAqegb+8xyubPIHt+lebcaKxs5aGsTg+r3vq5juMDAPs
 iwSVYUDcIw9dHer1lJfo7QCy3QUTRDTxh+LB9VlHXQICgeCK02sLBOi9hbEr4/H8
 Ko9g8J3BMxcMkXLHT9ud
 =PYQT
 -----END PGP SIGNATURE-----

Merge tag 'bug-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull <linux/bug.h> cleanup from Paul Gortmaker:
 "The changes shown here are to unify linux's BUG support under the one
  <linux/bug.h> file.  Due to historical reasons, we have some BUG code
  in bug.h and some in kernel.h -- i.e.  the support for BUILD_BUG in
  linux/kernel.h predates the addition of linux/bug.h, but old code in
  kernel.h wasn't moved to bug.h at that time.  As a band-aid, kernel.h
  was including <asm/bug.h> to pseudo link them.

  This has caused confusion[1] and general yuck/WTF[2] reactions.  Here
  is an example that violates the principle of least surprise:

      CC      lib/string.o
      lib/string.c: In function 'strlcat':
      lib/string.c:225:2: error: implicit declaration of function 'BUILD_BUG_ON'
      make[2]: *** [lib/string.o] Error 1
      $
      $ grep linux/bug.h lib/string.c
      #include <linux/bug.h>
      $

  We've included <linux/bug.h> for the BUG infrastructure and yet we
  still get a compile fail! [We've not kernel.h for BUILD_BUG_ON.] Ugh -
  very confusing for someone who is new to kernel development.

  With the above in mind, the goals of this changeset are:

  1) find and fix any include/*.h files that were relying on the
     implicit presence of BUG code.
  2) find and fix any C files that were consuming kernel.h and hence
     relying on implicitly getting some/all BUG code.
  3) Move the BUG related code living in kernel.h to <linux/bug.h>
  4) remove the asm/bug.h from kernel.h to finally break the chain.

  During development, the order was more like 3-4, build-test, 1-2.  But
  to ensure that git history for bisect doesn't get needless build
  failures introduced, the commits have been reorderd to fix the problem
  areas in advance.

	[1]  https://lkml.org/lkml/2012/1/3/90
	[2]  https://lkml.org/lkml/2012/1/17/414"

Fix up conflicts (new radeon file, reiserfs header cleanups) as per Paul
and linux-next.

* tag 'bug-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  kernel.h: doesn't explicitly use bug.h, so don't include it.
  bug: consolidate BUILD_BUG_ON with other bug code
  BUG: headers with BUG/BUG_ON etc. need linux/bug.h
  bug.h: add include of it to various implicit C users
  lib: fix implicit users of kernel.h for TAINT_WARN
  spinlock: macroize assert_spin_locked to avoid bug.h dependency
  x86: relocate get/set debugreg fcns to include/asm/debugreg.
2012-03-24 10:08:39 -07:00
Paul Gortmaker
187f1882b5 BUG: headers with BUG/BUG_ON etc. need linux/bug.h
If a header file is making use of BUG, BUG_ON, BUILD_BUG_ON, or any
other BUG variant in a static inline (i.e. not in a #define) then
that header really should be including <linux/bug.h> and not just
expecting it to be implicitly present.

We can make this change risk-free, since if the files using these
headers didn't have exposure to linux/bug.h already, they would have
been causing compile failures/warnings.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-03-04 17:54:34 -05:00
Mark Brown
4b004346fe crypto: Add bulk algorithm registration interface
Hardware crypto engines frequently need to register a selection of
different algorithms with the core. Simplify their code slightly,
especially the error handling, by providing functions to register a
number of algorithms in a single call.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-01-26 13:35:49 +11:00
Nikos Mavrogiannopoulos
d912bb7677 crypto: Add CRYPTO_ALG_KERN_DRIVER_ONLY flag
The added CRYPTO_ALG_KERN_DRIVER_ONLY indicates whether a cipher
is only available via a kernel driver. If the cipher implementation
might be available by using an instruction set or by porting the
kernel code, then it must not be set.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-01-13 16:38:40 +11:00
Linus Torvalds
32aaeffbd4 Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits)
  Revert "tracing: Include module.h in define_trace.h"
  irq: don't put module.h into irq.h for tracking irqgen modules.
  bluetooth: macroize two small inlines to avoid module.h
  ip_vs.h: fix implicit use of module_get/module_put from module.h
  nf_conntrack.h: fix up fallout from implicit moduleparam.h presence
  include: replace linux/module.h with "struct module" wherever possible
  include: convert various register fcns to macros to avoid include chaining
  crypto.h: remove unused crypto_tfm_alg_modname() inline
  uwb.h: fix implicit use of asm/page.h for PAGE_SIZE
  pm_runtime.h: explicitly requires notifier.h
  linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h
  miscdevice.h: fix up implicit use of lists and types
  stop_machine.h: fix implicit use of smp.h for smp_processor_id
  of: fix implicit use of errno.h in include/linux/of.h
  of_platform.h: delete needless include <linux/module.h>
  acpi: remove module.h include from platform/aclinux.h
  miscdevice.h: delete unnecessary inclusion of module.h
  device_cgroup.h: delete needless include <linux/module.h>
  net: sch_generic remove redundant use of <linux/module.h>
  net: inet_timewait_sock doesnt need <linux/module.h>
  ...

Fix up trivial conflicts (other header files, and  removal of the ab3550 mfd driver) in
 - drivers/media/dvb/frontends/dibx000_common.c
 - drivers/media/video/{mt9m111.c,ov6650.c}
 - drivers/mfd/ab3550-core.c
 - include/linux/dmaengine.h
2011-11-06 19:44:47 -08:00
Paul Gortmaker
7c926402a7 crypto.h: remove unused crypto_tfm_alg_modname() inline
The <linux/crypto.h> (which is in turn in common headers
like tcp.h) wants to use module_name() in an inline fcn.
But having all of <linux/module.h> along for the ride is
overkill and slows down compiles by a measureable amount,
since it in turn includes lots of headers.

Since the inline is never used anywhere in the kernel[1],
we can just remove it, and then also remove the module.h
include as well.

In all the many crypto modules, there were some relying on
crypto.h including module.h -- for them we now explicitly
call out module.h for inclusion.

[1] git grep shows some staging drivers also define the same
static inline, but they also never ever use it.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:32:31 -04:00
Steffen Klassert
64a947b133 crypto: Add a flag to identify crypto instances
The upcomming crypto user configuration api needs to identify
crypto instances. This patch adds a flag that is set if the
algorithm is an instance that is build from templates.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2011-10-21 14:24:01 +02:00
Arun Sharma
60063497a9 atomic: use <linux/atomic.h>
This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>

Signed-off-by: Arun Sharma <asharma@fb.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:47 -07:00
David Woodhouse
ec49fdbd35 crypto: Use ARCH_KMALLOC_MINALIGN for CRYPTO_MINALIGN now that it's exposed
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2010-05-19 22:03:14 +03:00
Benjamin Gilbert
8ffd1be677 crypto: hash - Remove cra_u.{digest,hash}
Remove unused digest_alg and hash_alg structs from crypto_alg union and
kill their definitions.  This also ensures that old-style digest/hash
algorithms maintained out of tree will break at build time rather than
oopsing at runtime.

Signed-off-by: Benjamin Gilbert <bgilbert@cs.cmu.edu>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-10-19 12:58:55 +09:00
Herbert Xu
500b3e3c3d crypto: ahash - Remove old_ahash_alg
Now that all ahash implementations have been converted to the new
ahash type, we can remove old_ahash_alg and its associated support.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 20:29:57 +08:00
Herbert Xu
88056ec346 crypto: ahash - Convert to new style algorithms
This patch converts crypto_ahash to the new style.  The old ahash
algorithm type is retained until the existing ahash implementations
are also converted.  All ahash users will automatically get the
new crypto_ahash type.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 15:54:07 +08:00
Herbert Xu
aef73cfcb9 crypto: async - Use kzfree for requests
This patch changes the kfree call to kzfree for async requests.
As the request may contain sensitive data it needs to be zeroed
before it can be reallocated by others.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-12 10:46:03 +08:00
Geert Uytterhoeven
a1d2f09544 crypto: compress - Add pcomp interface
The current "comp" crypto interface supports one-shot (de)compression only,
i.e. the whole data buffer to be (de)compressed must be passed at once, and
the whole (de)compressed data buffer will be received at once.
In several use-cases (e.g. compressed file systems that store files in big
compressed blocks), this workflow is not suitable.
Furthermore, the "comp" type doesn't provide for the configuration of
(de)compression parameters, and always allocates workspace memory for both
compression and decompression, which may waste memory.

To solve this, add a "pcomp" partial (de)compression interface that provides
the following operations:
  - crypto_compress_{init,update,final}() for compression,
  - crypto_decompress_{init,update,final}() for decompression,
  - crypto_{,de}compress_setup(), to configure (de)compression parameters
    (incl. allocating workspace memory).

The (de)compression methods take a struct comp_request, which was mimicked
after the z_stream object in zlib, and contains buffer pointer and length
pairs for input and output.

The setup methods take an opaque parameter pointer and length pair. Parameters
are supposed to be encoded using netlink attributes, whose meanings depend on
the actual (name of the) (de)compression algorithm.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-03-04 15:05:33 +08:00
Herbert Xu
3f683d6175 crypto: api - Fix crypto_alloc_tfm/create_create_tfm return convention
This is based on a report and patch by Geert Uytterhoeven.

The functions crypto_alloc_tfm and create_create_tfm return a
pointer that needs to be adjusted by the caller when successful
and otherwise an error value.  This means that the caller has
to check for the error and only perform the adjustment if the
pointer returned is valid.

Since all callers want to make the adjustment and we know how
to adjust it ourselves, it's much easier to just return adjusted
pointer directly.

The only caveat is that we have to return a void * instead of
struct crypto_tfm *.  However, this isn't that bad because both
of these functions are for internal use only (by types code like
shash.c, not even algorithms code).

This patch also moves crypto_alloc_tfm into crypto/internal.h
(crypto_create_tfm is already there) to reflect this.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-02-18 16:56:59 +08:00
Herbert Xu
7b2cd92adc crypto: api - Fix zeroing on free
Geert Uytterhoeven pointed out that we're not zeroing all the
memory when freeing a transform.  This patch fixes it by calling
ksize to ensure that we zero everything in sight.

Reported-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-02-05 16:48:53 +11:00