- Jun 27, 2016
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Tadeusz Struk authored
Add Giovanni and Salvatore who will take over the qat maintenance. Signed-off-by:
Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Megha Dey authored
Until now, there was only support for the SHA1 multibuffer algorithm. Hence, there was just one sha-mb folder. Now, with the introduction of the SHA256 multi-buffer algorithm , it is logical to name the existing folder as sha1-mb. Signed-off-by:
Megha Dey <megha.dey@linux.intel.com> Reviewed-by:
Fenghua Yu <fenghua.yu@intel.com> Reviewed-by:
Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Megha Dey authored
The existing test suite to calculate the speed of the SHA algorithms assumes serial (single buffer)) computation of data. With the SHA multibuffer algorithms, we work on 8 lanes of data in parallel. Hence, the need to introduce a new test suite to calculate the speed for these algorithms. Signed-off-by:
Megha Dey <megha.dey@linux.intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Megha Dey authored
This patch introduces the assembly routines to do SHA256 computation on buffers belonging to several jobs at once. The assembly routines are optimized with AVX2 instructions that have 8 data lanes and using AVX2 registers. Signed-off-by:
Megha Dey <megha.dey@linux.intel.com> Reviewed-by:
Fenghua Yu <fenghua.yu@intel.com> Reviewed-by:
Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Megha Dey authored
This patch introduces the data structures and prototypes of functions needed for computing SHA256 hash using multi-buffer. Included are the structures of the multi-buffer SHA256 job, job scheduler in C and x86 assembly. Signed-off-by:
Megha Dey <megha.dey@linux.intel.com> Reviewed-by:
Fenghua Yu <fenghua.yu@intel.com> Reviewed-by:
Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Megha Dey authored
This patch introduces the routines used to submit and flush buffers belonging to SHA256 crypto jobs to the SHA256 multibuffer algorithm. It is implemented mostly in assembly optimized with AVX2 instructions. Signed-off-by:
Megha Dey <megha.dey@linux.intel.com> Reviewed-by:
Fenghua Yu <fenghua.yu@intel.com> Reviewed-by:
Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Megha Dey authored
Add the config CRYPTO_SHA256_MB which will enable the computation using the SHA256 multi-buffer algorithm. Signed-off-by:
Megha Dey <megha.dey@linux.intel.com> Reviewed-by:
Fenghua Yu <fenghua.yu@intel.com> Reviewed-by:
Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Megha Dey authored
This patch introduces the multi-buffer job manager which is responsible for submitting scatter-gather buffers from several SHA256 jobs to the multi-buffer algorithm. It also contains the flush routine to that's called by the crypto daemon to complete the job when no new jobs arrive before the deadline of maximum latency of a SHA256 crypto job. The SHA256 multi-buffer crypto algorithm is defined and initialized in this patch. Signed-off-by:
Megha Dey <megha.dey@linux.intel.com> Reviewed-by:
Fenghua Yu <fenghua.yu@intel.com> Reviewed-by:
Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Florian Fainelli authored
Document the binding used by the Broadcom BCM5301x (Northstar) SoC random number generator. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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- Jun 24, 2016
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Stephen Rothwell authored
There is another ecdh_shared_secret in net/bluetooth/ecc.c Fixes: 3c4b2390 ("crypto: ecdh - Add ECDH software support") Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Florian Fainelli authored
The Broadcom BCM5301x SoCs (Northstar) utilize the same random number generator peripheral as Northstar Plus and BCM2835, but just like the NSP SoC, we need to enable the interrupt. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Stephan Mueller authored
As part of the Y2038 development, __getnstimeofday is not supposed to be used any more. It is now replaced with ktime_get_ns. The Jitter RNG uses the time stamp to measure the execution time of a given code path and tries to detect variations in the execution time. Therefore, the only requirement the Jitter RNG has, is a sufficient high resolution to detect these variations. The change was tested on x86 to show an identical behavior as RDTSC. The used test code simply measures the execution time of the heart of the RNG: jent_get_nstime(&time); jent_memaccess(ec, min); jent_fold_time(NULL, time, &folded, min); jent_get_nstime(&time2); return ((time2 - time)); Signed-off-by:
Stephan Mueller <smueller@chronox.de> Acked-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Herbert Xu authored
This patch replaces use of the obsolete blkcipher with skcipher. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Acked-by:
David Howells <dhowells@redhat.com>
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Bin Liu authored
Adds software fallback support for small crypto requests. In these cases, it is undesirable to use DMA, as setting it up itself is rather heavy operation. Gives about 40% extra performance in ipsec usecase. Signed-off-by:
Bin Liu <b-liu@ti.com> [t-kristo@ti.com: dropped the extra traces, updated some comments on the code] Signed-off-by:
Tero Kristo <t-kristo@ti.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Lokesh Vutla authored
The extra call to dmaengine_terminate_all is not needed, as the DMA is not running at this point. This improves performance slightly. Signed-off-by:
Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by:
Tero Kristo <t-kristo@ti.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Tero Kristo authored
Change crypto queue size from 1 to 10 for omap SHA driver. This should allow clients to enqueue requests more effectively to avoid serializing whole crypto sequences, giving extra performance. Signed-off-by:
Tero Kristo <t-kristo@ti.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Tero Kristo authored
Calling runtime PM API for every block causes serious performance hit to crypto operations that are done on a long buffer. As crypto is performed on a page boundary, encrypting large buffers can cause a series of crypto operations divided by page. The runtime PM API is also called those many times. Convert the driver to use runtime_pm autosuspend instead, with a default timeout value of 1 second. This results in upto ~50% speedup. Signed-off-by:
Tero Kristo <t-kristo@ti.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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- Jun 23, 2016
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Salvatore Benedetto authored
* Implement ECDH under kpp API * Provide ECC software support for curve P-192 and P-256. * Add kpp test for ECDH with data generated by OpenSSL Signed-off-by:
Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Salvatore Benedetto authored
* Implement MPI based Diffie-Hellman under kpp API * Test provided uses data generad by OpenSSL Signed-off-by:
Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Salvatore Benedetto authored
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>
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Megha Dey authored
Herbert wants the sha1-mb algorithm to have an async implementation: https://lkml.org/lkml/2016/4/5/286. Currently, sha1-mb uses an async interface for the outer algorithm and a sync interface for the inner algorithm. This patch introduces a async interface for even the inner algorithm. Signed-off-by:
Megha Dey <megha.dey@linux.intel.com> Signed-off-by:
Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Herbert Xu authored
This patch fixes an old bug where requests can be reordered because some are processed by cryptd while others are processed directly in softirq context. The fix is to always postpone to cryptd if there are currently requests outstanding from the same tfm. This patch also removes the redundant use of cryptd in the async init function as init never touches the FPU. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Herbert Xu authored
This patch fixes an old bug where requests can be reordered because some are processed by cryptd while others are processed directly in softirq context. The fix is to always postpone to cryptd if there are currently requests outstanding from the same tfm. This patch also removes the redundant use of cryptd in the async init function as init never touches the FPU. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Herbert Xu authored
This patch fixes an old bug where requests can be reordered because some are processed by cryptd while others are processed directly in softirq context. The fix is to always postpone to cryptd if there are currently requests outstanding from the same tfm. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Herbert Xu authored
This patch fixes an old bug where gcm requests can be reordered because some are processed by cryptd while others are processed directly in softirq context. The fix is to always postpone to cryptd if there are currently requests outstanding from the same tfm. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Herbert Xu authored
This patch adds helpers to check whether a given tfm is currently queued. This is meant to be used by ablk_helper and similar entities to ensure that no reordering is introduced because of requests queued in cryptd with respect to requests being processed in softirq context. The per-cpu queue length limit is also increased to 1000 in line with network limits. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
Now that crypto requests are chained together at the DMA level, we increase the size of the crypto queue for each engine. The result is that as the backlog list is reached later, it does not stop the crypto stack from sending asychronous requests, so more cryptographic tasks are processed by the engines. Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
The Cryptographic Engines and Security Accelerators (CESA) supports the Multi-Packet Chain Mode. With this mode enabled, multiple tdma requests can be chained and processed by the hardware without software intervention. This mode was already activated, however the crypto requests were not chained together. By doing so, we reduce significantly the number of IRQs. Instead of being interrupted at the end of each crypto request, we are interrupted at the end of the last cryptographic request processed by the engine. This commits re-factorizes the code, changes the code architecture and adds the required data structures to chain cryptographic requests together before sending them to an engine (stopped or possibly already running). Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
This commits adds support for fine grained load balancing on multi-engine IPs. The engine is pre-selected based on its current load and on the weight of the crypto request that is about to be processed. The global crypto queue is also moved to each engine. These changes are required to allow chaining crypto requests at the DMA level. By using a crypto queue per engine, we make sure that we keep the state of the tdma chain synchronized with the crypto queue. We also reduce contention on 'cesa_dev->lock' and improve parallelism. Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
Currently the crypto requests were sent to engines sequentially. This commit moves the SRAM I/O operations from the prepare to the step functions. It provides flexibility for future works and allow to prepare a request while the engine is running. Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
So far, the 'process' operation was used to check if the current request was correctly handled by the engine, if it was the case it copied information from the SRAM to the main memory. Now, we split this operation. We keep the 'process' operation, which still checks if the request was correctly handled by the engine or not, then we add a new operation for completion. The 'complete' method copies the content of the SRAM to memory. This will soon become useful if we want to call the process and the complete operations from different locations depending on the type of the request (different cleanup logic). Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
Currently, the only way to access the tdma chain is to use the 'req' union from a mv_cesa_{ablkcipher,ahash}. This will soon become a problem if we want to handle the TDMA chaining vs standard/non-DMA processing in a generic way (with generic functions at the cesa.c level detecting whether the request should be queued at the DMA level or not). Hence the decision to move the chain field a the mv_cesa_req level at the expense of adding 2 void * fields to all request contexts (including non-DMA ones) and to remove the type completly. To limit the overhead, we get rid of the type field, which can now be deduced from the req->chain.first value. Once these changes are done the union is no longer needed, so remove it and move mv_cesa_ablkcipher_std_req and mv_cesa_req to mv_cesa_ablkcipher_req directly. There are also no needs to keep the 'base' field into the union of mv_cesa_ahash_req, so move it into the upper structure. Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
Add a TDMA descriptor at the end of the request for copying the output IV vector via a DMA transfer. This is a good way for offloading as much as processing as possible to the DMA and the crypto engine. This is also required for processing multiple cipher requests in chained mode, otherwise the content of the IV vector would be overwritten by the last processed request. Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
So far, the way that the type of a TDMA operation was checked was wrong. We have to use the type mask in order to get the right part of the flag containing the type of the operation. Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
Add a BUG_ON() call when the driver tries to launch a crypto request while the engine is still processing the previous one. This replaces a silent system hang by a verbose kernel panic with the associated backtrace to let the user know that something went wrong in the CESA driver. Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Romain Perier authored
Adding a macro constant to be used for the size of the crypto queue, instead of using a numeric value directly. It will be easier to maintain in case we add more than one crypto queue of the same size. Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Herbert Xu authored
On 16-byte requests the optimised version is actually slower than the generic code, so we should simply use that instead. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Cheers,
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Herbert Xu authored
This patch commit eed1e1af as it is only a workaround for the real bug and the proper fix has now been applied as 055ddaac ("crypto: user - re-add size check for CRYPTO_MSG_GETALG"). Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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- Jun 20, 2016
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Dan Carpenter authored
We accidentally return PTR_ERR(NULL) which is success but we should return -ENOMEM. Fixes: 35591285 ('crypto: drbg - use CTR AES instead of ECB AES') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Stephan Mueller <smueller@chronox.de> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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raveendra padasalagi authored
Added support for SHA-3 algorithm test's in tcrypt module and related test vectors. Signed-off-by:
Raveendra Padasalagi <raveendra.padasalagi@broadcom.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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