- 09 Mar, 2015 6 commits
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Feng Kan authored
This adds ACPI support for APM X-Gene RNG unit. Signed-off-by:
Feng Kan <fkan@apm.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Stephan Mueller authored
The file Documentation/DocBook/crypto-API.tmpl documents the kernel crypto API and is maintained. Signed-off-by:
Stephan Mueller <smueller@chronox.de> Signed-off-by:
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Stephan Mueller authored
The patch moves the information provided in Documentation/crypto/crypto-API-userspace.txt into a separate chapter in the kernel crypto API DocBook. Some corrections are applied (such as removing a reference to Netlink when the AF_ALG socket is referred to). In addition, the AEAD and RNG interface description is now added. Also, a brief description of the zero-copy interface with an example code snippet is provided. Signed-off-by:
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Stephan Mueller authored
Change the RNGs to always return 0 in success case. This patch ensures that seqiv.c works with RNGs other than krng. seqiv expects that any return code other than 0 is an error. Without the patch, rfc4106(gcm(aes)) will not work when using a DRBG or an ANSI X9.31 RNG. Signed-off-by:
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Yanjiang Jin authored
Fix rng_unmap_ctx's DMA_UNMAP size problem for caam_rng, else system would report the below calltrace during cleanup caam_rng. Since rng_create_sh_desc() creates a fixed descriptor of exactly 4 command-lengths now, also update DESC_RNG_LEN to (4 * CAAM_CMD_SZ). caam_jr ffe301000.jr: DMA-API: device driver frees DMA memory with different size [device address=0x000000007f080010] [map size=16 bytes] [unmap size=40 bytes] ------------[ cut here ]------------ WARNING: at lib/dma-debug.c:887 Modules linked in: task: c0000000f7cdaa80 ti: c0000000e5340000 task.ti: c0000000e5340000 NIP: c0000000004f5bc8 LR: c0000000004f5bc4 CTR: c0000000005f69b0 REGS: c0000000e53433c0 TRAP: 0700 Not tainted MSR: 0000000080029000 <CE,EE,ME> CR: 24088482 XER: 00000000 SOFTE: 0 GPR00: c0000000004f5bc4 c0000000e5343640 c0000000012af360 000000000000009f GPR04: 0000000000000000 00000000000000a0 c000000000d02070 c000000015980660 GPR08: c000000000cff360 0000000000000000 0000000000000000 c0000000012da018 GPR12: 00000000000001e3 c000000001fff780 00000000100f0000 0000000000000001 GPR16: 0000000000000002 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 ffffffffffffffff 0000000000000001 GPR24: 0000000000000001 0000000000000001 0000000000000000 0000000000000001 GPR28: c000000001556b90 c000000001565b80 c0000000e5343750 c0000000f9427480 NIP [c0000000004f5bc8] .check_unmap+0x538/0x9c0 LR [c0000000004f5bc4] .check_unmap+0x534/0x9c0 Call Trace: [c0000000e5343640] [c0000000004f5bc4] .check_unmap+0x534/0x9c0 (unreliable) [c0000000e53436e0] [c0000000004f60d4] .debug_dma_unmap_page+0x84/0xb0 [c0000000e5343810] [c00000000082f9d4] .caam_cleanup+0x1d4/0x240 [c0000000e53438a0] [c00000000056cc88] .hwrng_unregister+0xd8/0x1c0 Instruction dump: 7c641b78 41de0410 e8a90050 2fa50000 419e0484 e8de0028 e8ff0030 3c62ff90 e91e0030 38638388 48546ed9 60000000 <0fe00000> 3c62ff8f 38637fc8 48546ec5 ---[ end trace e43fd1734d6600df ]--- Signed-off-by:
Yanjiang Jin <yanjiang.jin@windriver.com> Acked-by:
Kim Phillips <kim.phillips@freescale.com> Signed-off-by:
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Yanjiang Jin authored
sec4_sg_bytes not being properly initialized causes ahash_done to try to free unallocated DMA memory: caam_jr ffe301000.jr: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0xdeadbeefdeadbeef] [size=3735928559 bytes] ------------[ cut here ]------------ WARNING: at lib/dma-debug.c:1093 Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.0.0-rc1+ #6 task: e9598c00 ti: effca000 task.ti: e95a2000 NIP: c04ef24c LR: c04ef24c CTR: c0549730 REGS: effcbd40 TRAP: 0700 Not tainted (4.0.0-rc1+) MSR: 00029002 <CE,EE,ME> CR: 22008084 XER: 20000000 GPR00: c04ef24c effcbdf0 e9598c00 00000096 c08f7424 c00ab2b0 00000000 00000001 GPR08: c0fe7510 effca000 00000000 000001c3 22008082 00000000 c1048e77 c1050000 GPR16: c0c36700 493c0040 0000002c e690e4a0 c1054fb4 c18bac40 00029002 c18b0788 GPR24: 00000014 e690e480 effcbe48 00000000 c0fde128 e6ffac10 deadbeef deadbeef NIP [c04ef24c] check_unmap+0x93c/0xb40 LR [c04ef24c] check_unmap+0x93c/0xb40 Call Trace: [effcbdf0] [c04ef24c] check_unmap+0x93c/0xb40 (unreliable) [effcbe40] [c04ef4f4] debug_dma_unmap_page+0xa4/0xc0 [effcbec0] [c070cda8] ahash_done+0x128/0x1a0 [effcbef0] [c0700070] caam_jr_dequeue+0x1d0/0x290 [effcbf40] [c0045f40] tasklet_action+0x110/0x1f0 [effcbf80] [c0044bc8] __do_softirq+0x188/0x700 [effcbfe0] [c00455d8] irq_exit+0x108/0x120 [effcbff0] [c000f520] call_do_irq+0x24/0x3c [e95a3e20] [c00059b8] do_IRQ+0xc8/0x170 [e95a3e50] [c0011bc8] ret_from_except+0x0/0x18 Signed-off-by:
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- 06 Mar, 2015 5 commits
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Scott Branden authored
This adds a driver for random number generator present on Broadcom IPROC devices. Reviewed-by:
Ray Jui <rjui@broadcom.com> Signed-off-by:
Scott Branden <sbranden@broadcom.com> Signed-off-by:
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Scott Branden authored
Documents the IPROC random number generator device tree bindings used in some Broadcom chipsets. Reviewed-by:
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Geert Uytterhoeven authored
Commit 7e933d3b ("crypto: ux500: use dmaengine_prep_slave_sg API") changed the code to use the new API, but forgot to update an error message. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Martin Hicks authored
This is properly defined in the md5 header file. Signed-off-by:
Martin Hicks <mort@bork.org> Acked-by:
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Martin Hicks authored
There were multiple loops in a row, for each separate step of the initialization of the channels. Simplify to a single loop. Signed-off-by:
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- 04 Mar, 2015 9 commits
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Stephan Mueller authored
The DRBG code contains memset(0) calls to initialize a varaible that are not necessary as the variable is always overwritten by the processing. This patch increases the CTR and Hash DRBGs by about 5%. Signed-off-by:
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Stephan Mueller authored
The CTR DRBG only encrypts one single block at a time. Thus, use the single block crypto API to avoid additional overhead from the block chaining modes. With the patch, the speed of the DRBG increases between 30% and 40%. The DRBG still passes the CTR DRBG CAVS test. Signed-off-by:
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Markus Stockhausen authored
Integrate the module into the kernel config tree. Signed-off-by:
Markus Stockhausen <stockhausen@collogia.de> Signed-off-by:
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Markus Stockhausen authored
Glue code for crypto infrastructure. Call the assembler code where required. Take a little care about small input data. Kick out early for input chunks < 64 bytes and replace memset for context cleanup with simple loop. Signed-off-by:
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Markus Stockhausen authored
This is the assembler code for the MD5 implementation. Handling of algorithm constants has been slightly changed to reduce register usage and make better use of cores with multiple ALUs. Thus they are stored as delta values. Signed-off-by:
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Colin Ian King authored
Fix typo, "intialization" -> "initialization" Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Stephan Mueller authored
Enable compilation of the AEAD AF_ALG support and provide a Kconfig option to compile the AEAD AF_ALG support. Signed-off-by:
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Stephan Mueller authored
This patch adds the AEAD support for AF_ALG. The implementation is based on algif_skcipher, but contains heavy modifications to streamline the interface for AEAD uses. To use AEAD, the user space consumer has to use the salg_type named "aead". The AEAD implementation includes some overhead to calculate the size of the ciphertext, because the AEAD implementation of the kernel crypto API makes implied assumption on the location of the authentication tag. When performing an encryption, the tag will be added to the created ciphertext (note, the tag is placed adjacent to the ciphertext). For decryption, the caller must hand in the ciphertext with the tag appended to the ciphertext. Therefore, the selection of the used memory needs to add/subtract the tag size from the source/destination buffers depending on the encryption type. The code is provided with comments explaining when and how that operation is performed. A fully working example using all aspects of AEAD is provided at http://www.chronox.de/libkcapi.htmlSigned-off-by:
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Stephan Mueller authored
The kernel crypto API has many indirections which warrant a description as otherwise one can get easily lost. The description explains the layers of the kernel crypto API based on examples. Signed-off-by:
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- 02 Mar, 2015 3 commits
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Markus Stockhausen authored
Integrate the module into the kernel config tree. Signed-off-by:
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Markus Stockhausen authored
Glue code for crypto infrastructure. Call the assembler code where required. Disable preemption during calculation and enable SPE instructions in the kernel prior to the call. Avoid to disable preemption for too long. Take a little care about small input data. Kick out early for input chunks < 64 bytes and replace memset for context cleanup with simple loop. Signed-off-by:
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Markus Stockhausen authored
This is the assembler code for SHA1 implementation with the SIMD SPE instruction set. With the enhanced instruction set we can operate on 2 32 bit words in parallel. That helps reducing the time to calculate W16-W79. For increasing performance even more the assembler function can compute hashes for more than one 64 byte input block. The state of the used SPE registers is preserved via the stack so we can run from interrupt context. There might be the case that we interrupt ourselves and push sensitive data from another context onto our stack. Clear this area in the stack afterwards to avoid information leakage. The code is endian independant. Signed-off-by:
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- 01 Mar, 2015 11 commits
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Markus Stockhausen authored
Integrate the module into the kernel configuration Signed-off-by:
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Markus Stockhausen authored
Integrate the assembler modules into the kernel crypto framework. Take care to avoid long intervals of disabled preemption. Signed-off-by:
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Markus Stockhausen authored
The assembler block cipher module that controls the core AES functions. Signed-off-by:
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Markus Stockhausen authored
Key generation for big endian core routines. Signed-off-by:
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Markus Stockhausen authored
The assembler AES encryption and decryption core routines. Implemented & optimized for big endian. Nevertheless they work on little endian too. For most efficient reuse in (higher level) block cipher routines they are implemented as "fast" call modules without any stack handling or register saving. The caller must take care of that part. Signed-off-by:
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Markus Stockhausen authored
4K AES tables for big endian. To reduce the possiblity of timing attacks, the size has been cut to 8KB + 256 bytes in contrast to 16KB in the generic implementation. That is not perfect but at least a good tradeoff for CPU limited router devices. Signed-off-by:
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Markus Stockhausen authored
Define some register aliases for better readability. Signed-off-by:
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Florian Fainelli authored
Simplify the driver's probe function and error handling by using the device managed allocators, while at it, drop the redundant "out of memory" messages since these are already printed by the allocator. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Florian Fainelli authored
Now that these definitions have been moved to drivers/char/hw_random/bcm63xx-rng.c where they belong to make the driver standalone, we can safely remove these definitions from bcm63xx_regs.h. Signed-off-by:
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Florian Fainelli authored
arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h contains the register definitions for this random number generator block, incorporate these register definitions directly into the bcm63xx-rng driver so we do not rely on this header to be provided. Signed-off-by:
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Florian Fainelli authored
bcm_{readl,writel} macros expand to __raw_{readl,writel}, use these directly such that we do not rely on the platform to provide these for us. As a result, we no longer use bcm63xx_io.h, so remove that inclusion too. Signed-off-by:
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- 28 Feb, 2015 6 commits
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Nicholas Mc Guire authored
All possible code-paths will assign ret to suitable values so this default value is not needed. Signed-off-by:
Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by:
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Nicholas Mc Guire authored
A failure of sahara_hw_descriptor_create() with -EINVAL due to scatter list out of bounds/invalid would not be reported back. This patch just passes on the -EINVAL so it is visible in sahara_queue_manage(). Signed-off-by:
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Nicholas Mc Guire authored
return type of wait_for_completion_timeout is unsigned long not int, this patch adds appropriate variables of type unsigned long. Signed-off-by:
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Nicholas Mc Guire authored
return type of wait_for_completion_timeout is unsigned long not int, this patch changes the type of ret from int to unsigned long. Signed-off-by:
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Tadeusz Struk authored
Changed the __driver-gcm-aes-aesni to be a proper aead algorithm. This required a valid setkey and setauthsize functions to be added and also some changes to make sure that math context is not corrupted when the alg is used directly. Note that the __driver-gcm-aes-aesni should not be used directly by modules that can use it in interrupt context as we don't have a good fallback mechanism in this case. Signed-off-by:
Adrian Hoban <adrian.hoban@intel.com> Signed-off-by:
Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by:
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Leonidas S. Barbosa authored
This patch enables VMX module in PPC64. Signed-off-by:
Leonidas S. Barbosa <leosilva@linux.vnet.ibm.com> Signed-off-by:
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