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path: root/drivers/crypto/qat/qat_common/qat_asym_algs.c
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2023-04-06crypto: qat - Move driver to drivers/crypto/intel/qatTom Zanussi1-1309/+0
With the growing number of Intel crypto drivers, it makes sense to group them all into a single drivers/crypto/intel/ directory. Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-12-02crypto: qat - Use helper to set reqsizeHerbert Xu1-2/+4
The value of reqsize must only be changed through the helper. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-09-16crypto: qat - use reference to structure in dma_map_single()Damian Muszynski1-6/+6
When mapping the input and output parameters, the implementations of RSA and DH pass to the function dma_map_single() a pointer to the first member of the structure they want to map instead of a pointer to the actual structure. This results in set of warnings reported by the static analyser Smatch: drivers/crypto/qat/qat_common/qat_asym_algs.c:335 qat_dh_compute_value() error: dma_map_single_attrs() '&qat_req->in.dh.in.b' too small (8 vs 64) drivers/crypto/qat/qat_common/qat_asym_algs.c:341 qat_dh_compute_value() error: dma_map_single_attrs() '&qat_req->out.dh.r' too small (8 vs 64) drivers/crypto/qat/qat_common/qat_asym_algs.c:732 qat_rsa_enc() error: dma_map_single_attrs() '&qat_req->in.rsa.enc.m' too small (8 vs 64) drivers/crypto/qat/qat_common/qat_asym_algs.c:738 qat_rsa_enc() error: dma_map_single_attrs() '&qat_req->out.rsa.enc.c' too small (8 vs 64) drivers/crypto/qat/qat_common/qat_asym_algs.c:878 qat_rsa_dec() error: dma_map_single_attrs() '&qat_req->in.rsa.dec.c' too small (8 vs 64) drivers/crypto/qat/qat_common/qat_asym_algs.c:884 qat_rsa_dec() error: dma_map_single_attrs() '&qat_req->out.rsa.dec.m' too small (8 vs 64) Where the address of the first element of a structure is used as an input for the function dma_map_single(), replace it with the address of the structure. This fix does not introduce any functional change as the addresses are the same. Signed-off-by: Damian Muszynski <damian.muszynski@intel.com> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-09-16Revert "crypto: qat - reduce size of mapped region"Giovanni Cabiddu1-6/+6
This reverts commit e48767c17718067ba21fb2ef461779ec2506f845. In an attempt to resolve a set of warnings reported by the static analyzer Smatch, the reverted commit improperly reduced the sizes of the DMA mappings used for the input and output parameters for both RSA and DH creating a mismatch (map size=8 bytes, unmap size=64 bytes). This issue is reported when CONFIG_DMA_API_DEBUG is selected, when the crypto self test is run. The function dma_unmap_single() reports a warning similar to the one below, saying that the `device driver frees DMA memory with different size`. DMA-API: 4xxx 0000:06:00.0: device driver frees DMA memory with different size [device address=0x0000000123206c80] [map size=8 bytes] [unmap size=64 bytes] WARNING: CPU: 0 PID: 0 at kernel/dma/debug.c:973 check_unmap+0x3d0/0x8c0\ ... Call Trace: <IRQ> debug_dma_unmap_page+0x5c/0x60 qat_dh_cb+0xd7/0x110 [intel_qat] qat_alg_asym_callback+0x1a/0x30 [intel_qat] adf_response_handler+0xbd/0x1a0 [intel_qat] tasklet_action_common.constprop.0+0xcd/0xe0 __do_softirq+0xf8/0x30c __irq_exit_rcu+0xbf/0x140 common_interrupt+0xb9/0xd0 </IRQ> <TASK> The original commit was correct. Cc: <stable@vger.kernel.org> Reported-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-06-24crypto: qat - replace get_current_node() with numa_node_id()Andre Przywara1-2/+2
Currently the QAT driver code uses a self-defined wrapper function called get_current_node() when it wants to learn the current NUMA node. This implementation references the topology_physical_package_id[] array, which more or less coincidentally contains the NUMA node id, at least on x86. Because this is not universal, and Linux offers a direct function to learn the NUMA node ID, replace that function with a call to numa_node_id(), which would work everywhere. This fixes the QAT driver operation on arm64 machines. Reported-by: Yoan Picchi <Yoan.Picchi@arm.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Yoan Picchi <yoan.picchi@arm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-05-20crypto: qat - honor CRYPTO_TFM_REQ_MAY_SLEEP flagGiovanni Cabiddu1-7/+10
If a request has the flag CRYPTO_TFM_REQ_MAY_SLEEP set, allocate memory using the flag GFP_KERNEL otherwise use GFP_ATOMIC. Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-05-20crypto: qat - add param check for DHGiovanni Cabiddu1-0/+4
Reject requests with a source buffer that is bigger than the size of the key. This is to prevent a possible integer underflow that might happen when copying the source scatterlist into a linear buffer. Cc: stable@vger.kernel.org Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-05-20crypto: qat - add param check for RSAGiovanni Cabiddu1-0/+8
Reject requests with a source buffer that is bigger than the size of the key. This is to prevent a possible integer underflow that might happen when copying the source scatterlist into a linear buffer. Cc: stable@vger.kernel.org Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-05-20crypto: qat - remove dma_free_coherent() for DHGiovanni Cabiddu1-49/+34
The functions qat_dh_compute_value() allocates memory with dma_alloc_coherent() if the source or the destination buffers are made of multiple flat buffers or of a size that is not compatible with the hardware. This memory is then freed with dma_free_coherent() in the context of a tasklet invoked to handle the response for the corresponding request. According to Documentation/core-api/dma-api-howto.rst, the function dma_free_coherent() cannot be called in an interrupt context. Replace allocations with dma_alloc_coherent() in the function qat_dh_compute_value() with kmalloc() + dma_map_single(). Cc: stable@vger.kernel.org Fixes: c9839143ebbf ("crypto: qat - Add DH support") Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-05-20crypto: qat - remove dma_free_coherent() for RSAGiovanni Cabiddu1-77/+60
After commit f5ff79fddf0e ("dma-mapping: remove CONFIG_DMA_REMAP"), if the algorithms are enabled, the driver crashes with a BUG_ON while executing vunmap() in the context of a tasklet. This is due to the fact that the function dma_free_coherent() cannot be called in an interrupt context (see Documentation/core-api/dma-api-howto.rst). The functions qat_rsa_enc() and qat_rsa_dec() allocate memory with dma_alloc_coherent() if the source or the destination buffers are made of multiple flat buffers or of a size that is not compatible with the hardware. This memory is then freed with dma_free_coherent() in the context of a tasklet invoked to handle the response for the corresponding request. Replace allocations with dma_alloc_coherent() in the functions qat_rsa_enc() and qat_rsa_dec() with kmalloc() + dma_map_single(). Cc: stable@vger.kernel.org Fixes: a990532023b9 ("crypto: qat - Add support for RSA algorithm") Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-05-20crypto: qat - fix memory leak in RSAGiovanni Cabiddu1-11/+1
When an RSA key represented in form 2 (as defined in PKCS #1 V2.1) is used, some components of the private key persist even after the TFM is released. Replace the explicit calls to free the buffers in qat_rsa_exit_tfm() with a call to qat_rsa_clear_ctx() which frees all buffers referenced in the TFM context. Cc: stable@vger.kernel.org Fixes: 879f77e9071f ("crypto: qat - Add RSA CRT mode") Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-05-20crypto: qat - add backlog mechanismGiovanni Cabiddu1-8/+15
The implementations of the crypto algorithms (aead, skcipher, etc) in the QAT driver do not properly support requests with the CRYPTO_TFM_REQ_MAY_BACKLOG flag set. If the HW queue is full, the driver returns -EBUSY but does not enqueue the request. This can result in applications like dm-crypt waiting indefinitely for the completion of a request that was never submitted to the hardware. Fix this by adding a software backlog queue: if the ring buffer is more than eighty percent full, then the request is enqueued to a backlog list and the error code -EBUSY is returned back to the caller. Requests in the backlog queue are resubmitted at a later time, in the context of the callback of a previously submitted request. The request for which -EBUSY is returned is then marked as -EINPROGRESS once submitted to the HW queues. The submission loop inside the function qat_alg_send_message() has been modified to decide which submission policy to use based on the request flags. If the request does not have the CRYPTO_TFM_REQ_MAY_BACKLOG set, the previous behaviour has been preserved. Based on a patch by Vishnu Das Ramachandran <vishnu.dasx.ramachandran@intel.com> Cc: stable@vger.kernel.org Fixes: d370cec32194 ("crypto: qat - Intel(R) QAT crypto interface") Reported-by: Mikulas Patocka <mpatocka@redhat.com> Reported-by: Kyle Sanderson <kyle.leet@gmail.com> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Marco Chiappero <marco.chiappero@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-05-20crypto: qat - refactor submission logicGiovanni Cabiddu1-18/+32
All the algorithms in qat_algs.c and qat_asym_algs.c use the same pattern to submit messages to the HW queues. Move the submission loop to a new function, qat_alg_send_message(), and share it between the symmetric and the asymmetric algorithms. As part of this rework, since the number of retries before returning an error is inconsistent between the symmetric and asymmetric implementations, set it to a value that works for both (i.e. 20, was 10 in qat_algs.c and 100 in qat_asym_algs.c) In addition fix the return code reported when the HW queues are full. In that case return -ENOSPC instead of -EBUSY. Including stable in CC since (1) the error code returned if the HW queues are full is incorrect and (2) to facilitate the backport of the next fix "crypto: qat - add backlog mechanism". Cc: stable@vger.kernel.org Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Marco Chiappero <marco.chiappero@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-05-20crypto: qat - set to zero DH parameters before freeGiovanni Cabiddu1-0/+3
Set to zero the context buffers containing the DH key before they are freed. This is a defense in depth measure that avoids keys to be recovered from memory in case the system is compromised between the free of the buffer and when that area of memory (containing keys) gets overwritten. Cc: stable@vger.kernel.org Fixes: c9839143ebbf ("crypto: qat - Add DH support") Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2021-01-14crypto: qat - reduce size of mapped regionAdam Guerin1-6/+6
Restrict size of field to what is required by the operation. This issue was detected by smatch: drivers/crypto/qat/qat_common/qat_asym_algs.c:328 qat_dh_compute_value() error: dma_map_single_attrs() '&qat_req->in.dh.in.b' too small (8 vs 64) Signed-off-by: Adam Guerin <adam.guerin@intel.com> Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-11-06crypto: qat - remove unneeded semicolonTom Rix1-4/+4
A semicolon is not needed after a switch statement. Signed-off-by: Tom Rix <trix@redhat.com> Signed-off-by: Tom Rix <trix@redhat.com> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-10-30crypto: qat - remove unused functionGiovanni Cabiddu1-5/+0
Remove unused function qat_dh_get_params(). This is to fix the following warning when compiling the driver with CC=clang W=1 drivers/crypto/qat/qat_common/qat_asym_algs.c:207:34: warning: unused function 'qat_dh_get_params' [-Wunused-function] Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Fiona Trahe <fiona.trahe@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-06-18crypto: qat - replace user types with kernel u typesWojciech Ziemba1-6/+6
Kernel source code should not include stdint.h types. This patch replaces uintXX_t types with respective ones defined in kernel headers. Signed-off-by: Wojciech Ziemba <wojciech.ziemba@intel.com> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-06-18crypto: qat - convert to SPDX License IdentifiersGiovanni Cabiddu1-47/+2
Replace License Headers with SPDX License Identifiers. Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-04-18crypto: rsa - unimplement sign/verify for raw RSA backendsVitaly Chikunov1-2/+0
In preparation for new akcipher verify call remove sign/verify callbacks from RSA backends and make PKCS1 driver call encrypt/decrypt instead. This also complies with the well-known idea that raw RSA should never be used for sign/verify. It only should be used with proper padding scheme such as PKCS1 driver provides. Cc: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Cc: qat-linux@intel.com Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Gary Hook <gary.hook@amd.com> Cc: Horia Geantă <horia.geanta@nxp.com> Cc: Aymen Sghaier <aymen.sghaier@nxp.com> Signed-off-by: Vitaly Chikunov <vt@altlinux.org> Reviewed-by: Horia Geantă <horia.geanta@nxp.com> Acked-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-08cross-tree: phase out dma_zalloc_coherent()Luis Chamberlain1-34/+34
We already need to zero out memory for dma_alloc_coherent(), as such using dma_zalloc_coherent() is superflous. Phase it out. This change was generated with the following Coccinelle SmPL patch: @ replace_dma_zalloc_coherent @ expression dev, size, data, handle, flags; @@ -dma_zalloc_coherent(dev, size, handle, flags) +dma_alloc_coherent(dev, size, handle, flags) Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> [hch: re-ran the script on the latest tree] Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-02-15crypto: qat - Make several functions staticColin Ian King1-3/+6
Functions qat_rsa_set_n, qat_rsa_set_e and qat_rsa_set_n are local to the source and do not need to be in global scope, so make them static. Cleans up sparse warnings: drivers/crypto/qat/qat_common/qat_asym_algs.c:972:5: warning: symbol 'qat_rsa_set_n' was not declared. Should it be static? drivers/crypto/qat/qat_common/qat_asym_algs.c:1003:5: warning: symbol 'qat_rsa_set_e' was not declared. Should it be static? drivers/crypto/qat/qat_common/qat_asym_algs.c:1027:5: warning: symbol 'qat_rsa_set_d' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10crypto: dh - Remove pointless checks for NULL 'p' and 'g'Eric Biggers1-3/+0
Neither 'p' nor 'g' can be NULL, as they were unpacked using crypto_dh_decode_key(). And it makes no sense for them to be optional. So remove the NULL checks that were copy-and-pasted into both modules. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10crypto: qat - Clean up error handling in qat_dh_set_secret()Eric Biggers1-7/+8
Update the error handling in qat_dh_set_secret() to mirror dh_set_secret(). The new version is less error-prone because freeing memory and setting the pointers to NULL is now only done in one place. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-06-10crypto: qat - comply with crypto_akcipher_maxsize()Tudor-Dan Ambarus1-2/+2
crypto_akcipher_maxsize() asks for the output buffer size without caring for errors. It allways assume that will be called after a valid setkey. Comply with it and return what he wants. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-06-10crypto: qat - comply with crypto_kpp_maxsize()Tudor-Dan Ambarus1-2/+2
crypto_kpp_maxsize() asks for the output buffer size without caring for errors. It allways assume that will be called after a valid setkey. Comply with it and return what he wants. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-03-09crypto: kpp - constify buffer passed to crypto_kpp_set_secret()Eric Biggers1-1/+1
Constify the buffer passed to crypto_kpp_set_secret() and kpp_alg.set_secret, since it is never modified. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-11crypto: qat - Stop dropping leading zeros from RSA outputSalvatore Benedetto1-20/+0
There is not need to drop leading zeros from the RSA output operations results. Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-11crypto: qat - Add DH supportSalvatore Benedetto1-72/+521
Add DH support under kpp api. Drop struct qat_rsa_request and introduce a more generic struct qat_asym_request and share it between RSA and DH requests. Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-05crypto: qat - Add RSA CRT modeSalvatore Benedetto1-25/+209
Extend qat driver to use RSA CRT mode when all CRT related components are present in the private key. Simplify code in qat_rsa_setkey by adding qat_rsa_clear_ctx. Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-05crypto: qat - Switch to new rsa_helper functionsSalvatore Benedetto1-29/+20
Drop all asn1 related code and use the new rsa_helper functions rsa_parse_[pub|priv]_key for parsing the key Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-04-05crypto: qat - fix address leaking of RSA public exponentTudor Ambarus1-1/+1
Signed-off-by: Tudor Ambarus <tudor-dan.ambarus@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-04-05crypto: qat - avoid memory corruption or undefined behaviourTudor Ambarus1-1/+1
memcopying to a (null pointer + offset) will result in memory corruption or undefined behaviour. Signed-off-by: Tudor Ambarus <tudor-dan.ambarus@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-02-16crypto: qat - fix leak on error pathTadeusz Struk1-34/+36
Fix a leak on error path in qat asym Reported-by: Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-10-14crypto: akcipher - Changes to asymmetric key APITadeusz Struk1-55/+158
Setkey function has been split into set_priv_key and set_pub_key. Akcipher requests takes sgl for src and dst instead of void *. Users of the API i.e. two existing RSA implementation and test mgr code have been updated accordingly. Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-08-18crypto: qat - Don't move data inside output bufferTadeusz Struk1-1/+1
Change memcpy to memmove because the copy is done within the same buffer. Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-23crypto: qat - Don't attempt to register algorithm multiple timesTadeusz Struk1-3/+16
When multiple devices are present in the system the driver attempts to register the same algorithm many times. Changes in v2: - use proper synchronization mechanizm between register and unregister Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-21crypto: qat - fix invalid check for RSA keylen in fips modeTadeusz Struk1-2/+2
The condition checking allowed key length was invalid. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-17crypto: qat - Add support for RSA algorithmTadeusz Struk1-0/+639
Add RSA support to QAT driver. Removed unused RNG rings. Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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