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2008-09-05async_tx: fix the bug in async_tx_run_dependenciesYuri Tikhonov
Should clear the next pointer of the TX if we are sure that the next TX (say NXT) will be submitted to the channel too. Overwise, we break the chain of descriptors, because we lose the information about the next descriptor to run. So next time, when invoke async_tx_run_dependencies() with TX, it's TX->next will be NULL, and NXT will be never submitted. Cc: <stable@kernel.org> [2.6.26] Signed-off-by: Yuri Tikhonov <yur@emcraft.com> Signed-off-by: Ilya Yanok <yanok@emcraft.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-08-29crypto: skcipher - Use RNG interface instead of get_random_bytesHerbert Xu
This patch makes the IV generators use the new RNG interface so that the user can pick an RNG other than the default get_random_bytes. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: rng - RNG interface and implementationNeil Horman
This patch adds a random number generator interface as well as a cryptographic pseudo-random number generator based on AES. It is meant to be used in cases where a deterministic CPRNG is required. One of the first applications will be as an input in the IPsec IV generation process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: api - Add fips_enable flagNeil Horman
Add the ability to turn FIPS-compliant mode on or off at boot In order to be FIPS compliant, several check may need to be preformed that may be construed as unusefull in a non-compliant mode. This patch allows us to set a kernel flag incating that we are running in a fips-compliant mode from boot up. It also exports that mode information to user space via a sysctl (/proc/sys/crypto/fips_enabled). Tested successfully by me. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: skcipher - Move IV generators into their own modulesHerbert Xu
This patch moves the default IV generators into their own modules in order to break a dependency loop between cryptomgr, rng, and blkcipher. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: cryptomgr - Test ciphers using ECBHerbert Xu
As it is we only test ciphers when combined with a mode. That means users that do not invoke a mode of operations may get an untested cipher. This patch tests all ciphers using the ECB mode so that simple cipher users such as ansi-cprng are also protected. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: api - Use test infrastructureHerbert Xu
This patch makes use of the new testing infrastructure by requiring algorithms to pass a run-time test before they're made available to users. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: cryptomgr - Add test infrastructureHerbert Xu
This patch moves the newly created alg_test infrastructure into cryptomgr. This shall allow us to use it for testing at algorithm registrations. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: tcrypt - Add alg_test interfaceHerbert Xu
This patch creates a new interface algorithm testing. A test can be requested for a particular implementation of an algorithm. This is achieved by taking both the name of the algorithm and that of the implementation. The all-inclusive test has also been rewritten to no longer require a duplicate listing of all algorithms with tests. In that process a number of missing tests have also been discovered and rectified. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: tcrypt - Abort and only log if there is an errorHerbert Xu
The info printed is a complete waste of space when there is no error since it doesn't tell us anything that we don't already know. If there is an error, we can also be more verbose. In case that there is an error, this patch also aborts the test and returns the error to the caller. In future this will be used to algorithms at registration time. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: crc32c - Use Intel CRC32 instructionAustin Zhang
From NHM processor onward, Intel processors can support hardware accelerated CRC32c algorithm with the new CRC32 instruction in SSE 4.2 instruction set. The patch detects the availability of the feature, and chooses the most proper way to calculate CRC32c checksum. Byte code instructions are used for compiler compatibility. No MMX / XMM registers is involved in the implementation. Signed-off-by: Austin Zhang <austin.zhang@intel.com> Signed-off-by: Kent Liu <kent.liu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: tcrypt - Avoid using contiguous pagesHerbert Xu
If tcrypt is to be used as a run-time integrity test, it needs to be more resilient in a hostile environment. For a start allocating 32K of physically contiguous memory is definitely out. This patch teaches it to use separate pages instead. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: api - Display larval objects properlyHerbert Xu
Rather than displaying larval objects as real objects, this patch makes them show up under /proc/crypto as of type larval. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: api - Export crypto_alg_lookup instead of __crypto_alg_lookupHerbert Xu
Since the only user of __crypto_alg_lookup is doing exactly what crypto_alg_lookup does, we can now the latter in lieu of the former. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-29crypto: Kconfig - Replace leading spaces with tabsAdrian Bunk
Instead of tabs there were two spaces. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-23crypto: authenc - Avoid using clobbered request pointerHerbert Xu
Authenc works in two stages for encryption, it first encrypts and then computes an ICV. The context memory of the request is used by both operations. The problem is that when an asynchronous encryption completes, we will compute the ICV and then reread the context memory of the encryption to get the original request. It just happens that we have a buffer of 16 bytes in front of the request pointer, so ICVs of 16 bytes (such as SHA1) do not trigger the bug. However, any attempt to uses a larger ICV instantly kills the machine when the first asynchronous encryption is completed. This patch fixes this by saving the request pointer before we start the ICV computation. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-13crypto: hash - Fix digest size check for digest typeHerbert Xu
The changeset ca786dc738f4f583b57b1bba7a335b5e8233f4b0 crypto: hash - Fixed digest size check missed one spot for the digest type. This patch corrects that error. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-13crypto: tcrypt - Fix AEAD chunk testingHerbert Xu
My changeset 4b22f0ddb6564210c9ded7ba25b2a1007733e784 crypto: tcrpyt - Remove unnecessary kmap/kunmap calls introduced a typo that broke AEAD chunk testing. In particular, axbuf should really be xbuf. There is also an issue with testing the last segment when encrypting. The additional part produced by AEAD wasn't tested. Similarly, on decryption the additional part of the AEAD input is mistaken for corruption. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-08-05async_tx: fix missing braces in async_xor_zero_sumDan Williams
Found-by: Yuri Tikhonov <yur@emcraft.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-07-23Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (24 commits) I/OAT: I/OAT version 3.0 support I/OAT: tcp_dma_copybreak default value dependent on I/OAT version I/OAT: Add watchdog/reset functionality to ioatdma iop_adma: cleanup iop_chan_xor_slot_count iop_adma: document how to calculate the minimum descriptor pool size iop_adma: directly reclaim descriptors on allocation failure async_tx: make async_tx_test_ack a boolean routine async_tx: remove depend_tx from async_tx_sync_epilog async_tx: export async_tx_quiesce async_tx: fix handling of the "out of descriptor" condition in async_xor async_tx: ensure the xor destination buffer remains dma-mapped async_tx: list_for_each_entry_rcu() cleanup dmaengine: Driver for the Synopsys DesignWare DMA controller dmaengine: Add slave DMA interface dmaengine: add DMA_COMPL_SKIP_{SRC,DEST}_UNMAP flags to control dma unmap dmaengine: Add dma_client parameter to device_alloc_chan_resources dmatest: Simple DMA memcpy test client dmaengine: DMA engine driver for Marvell XOR engine iop-adma: fix platform driver hotplug/coldplug dmaengine: track the number of clients using a channel ... Fixed up conflict in drivers/dca/dca-sysfs.c manually
2008-07-17async_tx: remove depend_tx from async_tx_sync_epilogDan Williams
All callers of async_tx_sync_epilog have called async_tx_quiesce on the depend_tx, so async_tx_sync_epilog need only call the callback to complete the operation. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-07-17async_tx: export async_tx_quiesceDan Williams
Replace open coded "wait and acknowledge" instances with async_tx_quiesce. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-07-17async_tx: fix handling of the "out of descriptor" condition in async_xorDan Williams
Ensure forward progress is made when a dmaengine driver is unable to allocate an xor descriptor by breaking the dependency chain with async_tx_quisce() and issue any pending descriptors. Tested with iop-adma by setting device->max_xor = 2 to force multiple calls to device_prep_dma_xor for each call to async_xor and limiting the descriptor slot pool to 5. Discovered that the minimum descriptor pool size for iop-adma is 2 * iop_chan_xor_slot_cnt(device->max_xor) + 1. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-07-17async_tx: ensure the xor destination buffer remains dma-mappedDan Williams
When the number of source buffers for an xor operation exceeds the hardware channel maximum async_xor creates a chain of dependent operations. The result of one operation is reused as an input to the next to continue the xor calculation. The destination buffer should remain mapped for the duration of the entire chain. To provide this guarantee the code must no longer be allowed to fallback to the synchronous path as this will preclude the buffer from being unmapped, i.e. the dma-driver will potentially miss the descriptor with !DMA_COMPL_SKIP_DEST_UNMAP. Cc: Neil Brown <neilb@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-07-17async_tx: list_for_each_entry_rcu() cleanupLi Zefan
In the rcu update side, don't use list_for_each_entry_rcu(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-07-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: Revert crypto: prng - Deterministic CPRNG
2008-07-15Merge branch 'core/rcu' into core/rcu-for-linusIngo Molnar
2008-07-15Revert crypto: prng - Deterministic CPRNGHerbert Xu
This patch is clearly not ready yet for prime time. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-11Merge branch 'linus' into core/rcuIngo Molnar
Conflicts: include/linux/rculist.h kernel/rcupreempt.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10crypto: hash - Move ahash functions into crypto/hash.hHerbert Xu
All new crypto interfaces should go into individual files as much as possible in order to ensure that crypto.h does not collapse under its own weight. This patch moves the ahash code into crypto/hash.h and crypto/internal/hash.h respectively. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: crc32c - Add ahash implementationHerbert Xu
This patch reimplements crc32c using the ahash interface. This allows one tfm to be used by an unlimited number of users provided that they all use the same key (which all current crc32c users do). Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: hash - Added scatter list walking helperHerbert Xu
This patch adds the walking helpers for hash algorithms akin to those of block ciphers. This is a necessary step before we can reimplement existing hash algorithms using the new ahash interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: prng - Deterministic CPRNGNeil Horman
This patch adds a cryptographic pseudo-random number generator based on CTR(AES-128). It is meant to be used in cases where a deterministic CPRNG is required. One of the first applications will be as an input in the IPsec IV generation process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: hash - Removed vestigial ahash fieldsHerbert Xu
The base field in ahash_tfm appears to have been cut-n-pasted from ablkcipher. It isn't needed here at all. Similarly, the info field in ahash_request also appears to have originated from its cipher counter-part and is vestigial. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: hash - Fixed digest size checkHerbert Xu
The digest size check on hash algorithms is incorrect. It's perfectly valid for hash algorithms to have a digest length longer than their block size. For example crc32c has a block size of 1 and a digest size of 4. Rather than having it lie about its block size, this patch fixes the checks to do what they really should which is to bound the digest size so that code placing the digest on the stack continue to work. HMAC however still needs to check this as it's only defined for such algorithms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: rmd - sparse annotationsHarvey Harrison
Similar to the rmd128.c annotations, significantly cuts down on the noise. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: rmd128 - sparse annotationsHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: camellia - Use kernel-provided bitops, unaligned access helpersHarvey Harrison
Remove the private implementation of 32-bit rotation and unaligned access with byteswapping. As a bonus, fixes sparse warnings: crypto/camellia.c:602:2: warning: cast to restricted __be32 crypto/camellia.c:603:2: warning: cast to restricted __be32 crypto/camellia.c:604:2: warning: cast to restricted __be32 crypto/camellia.c:605:2: warning: cast to restricted __be32 crypto/camellia.c:710:2: warning: cast to restricted __be32 crypto/camellia.c:711:2: warning: cast to restricted __be32 crypto/camellia.c:712:2: warning: cast to restricted __be32 crypto/camellia.c:713:2: warning: cast to restricted __be32 crypto/camellia.c:714:2: warning: cast to restricted __be32 crypto/camellia.c:715:2: warning: cast to restricted __be32 crypto/camellia.c:716:2: warning: cast to restricted __be32 crypto/camellia.c:717:2: warning: cast to restricted __be32 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: tcrpyt - Remove unnecessary kmap/kunmap callsHerbert Xu
Noticed by Neil Horman: we are doing unnecessary kmap/kunmap calls on kmalloced memory. This patch removes them. For the purposes of testing SG construction, the underlying crypto code already does plenty of kmap/kunmap calls anyway. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] tcrypt: Add self test for des3_ebe cipher operating in cbc modeNeil Horman
Patch to add checking of DES3 test vectors using CBC mode. FIPS-140-2 compliance mandates that any supported mode of operation must include a self test. This satisfies that requirement for cbc(des3_ede). The included test vector was generated by me using openssl. Key/IV was generated with the following command: openssl enc -des_ede_cbc -P input and output values were generated by repeating the string "Too many secrets" a few times over, truncating it to 128 bytes, and encrypting it with openssl using the aformentioned key. Tested successfully by myself Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Adrian-Ken Rueegsegger <rueegsegger@swiss-it.ch> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] rmd: Use pointer form of endian swapping operationsHerbert Xu
This patch converts the relevant code in the rmd implementations to use the pointer form of the endian swapping operations. This allows certain architectures to generate more optimised code. For example, on sparc64 this more than halves the CPU cycles on a typical hashing operation. Based on a patch by David Miller. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] rmd320: Fix endian issuesAdrian-Ken Rueegsegger
This patch fixes endian issues making rmd320 work properly on big-endian machines. Signed-off-by: Adrian-Ken Rueegsegger <rueegsegger@swiss-it.ch> Acked-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] rmd256: Fix endian issuesAdrian-Ken Rueegsegger
This patch fixes endian issues making rmd256 work properly on big-endian machines. Signed-off-by: Adrian-Ken Rueegsegger <rueegsegger@swiss-it.ch> Acked-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] rmd160: Fix endian issuesAdrian-Ken Rueegsegger
This patch fixes endian issues making rmd160 work properly on big-endian machines. Signed-off-by: Adrian-Ken Rueegsegger <rueegsegger@swiss-it.ch> Acked-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] rmd128: Fix endian problemsAdrian-Ken Rueegsegger
This patch is based on Sebastian Siewior's patch and fixes endian issues making rmd128 work properly on big-endian machines. Signed-off-by: Adrian-Ken Rueegsegger <rueegsegger@swiss-it.ch> Acked-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] tcrypt: Use asynchronous hash interfaceLoc Ho
This patch changes tcrypt to use the new asynchronous hash interface for testing hash algorithm correctness. The speed tests will continue to use the existing interface for now. Signed-off-by: Loc Ho <lho@amcc.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] cryptd: Add asynchronous hash supportLoc Ho
This patch adds asynchronous hash support to crypto daemon. Signed-off-by: Loc Ho <lho@amcc.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] hash: Add asynchronous hash supportLoc Ho
This patch adds asynchronous hash and digest support. Signed-off-by: Loc Ho <lho@amcc.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] ripemd: Add Kconfig entries for extended RIPEMD hash algorithmsAdrian-Ken Rueegsegger
This patch adds Kconfig entries for RIPEMD-256 and RIPEMD-320. Signed-off-by: Adrian-Ken Rueegsegger <rueegsegger@swiss-it.ch> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] tcrypt: Add test vectors for RIPEMD-256 and RIPEMD-320Adrian-Ken Rueegsegger
This patch adds test vectors for RIPEMD-256 and RIPEMD-320 hash algorithms. The test vectors are taken from <http://homes.esat.kuleuven.be/~bosselae/ripemd160.html> Signed-off-by: Adrian-Ken Rueegsegger <rueegsegger@swiss-it.ch> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>