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* crypto: skcipher - Use RNG interface instead of get_random_bytesHerbert Xu2008-08-291-0/+2
| | | | | | | 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>
* crypto: rng - RNG interface and implementationNeil Horman2008-08-291-0/+16
| | | | | | | | | | | | 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>
* crypto: api - Add fips_enable flagNeil Horman2008-08-291-0/+8
| | | | | | | | | | | | | | | 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>
* crypto: cryptomgr - Add test infrastructureHerbert Xu2008-08-291-4/+4
| | | | | | | | 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>
* crypto: crc32c - Use Intel CRC32 instructionAustin Zhang2008-08-291-0/+12
| | | | | | | | | | | | | 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>
* crypto: Kconfig - Replace leading spaces with tabsAdrian Bunk2008-08-291-39/+42
| | | | | | | 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>
* Revert crypto: prng - Deterministic CPRNGHerbert Xu2008-07-151-9/+0
| | | | | | This patch is clearly not ready yet for prime time. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: crc32c - Add ahash implementationHerbert Xu2008-07-101-1/+1
| | | | | | | | 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>
* crypto: prng - Deterministic CPRNGNeil Horman2008-07-101-0/+9
| | | | | | | | | | | | 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>
* [CRYPTO] cryptd: Add asynchronous hash supportLoc Ho2008-07-101-0/+1
| | | | | | | 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>
* [CRYPTO] ripemd: Add Kconfig entries for extended RIPEMD hash algorithmsAdrian-Ken Rueegsegger2008-07-101-0/+25
| | | | | | | 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>
* [CRYPTO] ripemd: Add Kconfig entries for RIPEMD hash algorithmsAdrian-Ken Rueegsegger2008-07-101-0/+26
| | | | | | | This patch adds Kconfig entries for RIPEMD-128 and RIPEMD-160. Signed-off-by: Adrian-Ken Rueegsegger <rueegsegger@swiss-it.ch> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] kconfig: Ordering cleanupSebastian Siewior2008-04-211-316/+329
| | | | | | | Ciphers, block modes, name it, are grouped together and sorted. Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Make the crypto subsystem fully modularSebastian Siewior2008-04-211-1/+1
| | | | | Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] cts: Add CTS mode required for Kerberos AES supportKevin Coffman2008-04-211-0/+11
| | | | | | | | Implement CTS wrapper for CBC mode required for support of AES encryption support for Kerberos (rfc3962). Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] authenc: Add missing Kconfig dependency on BLKCIPHERHerbert Xu2008-02-231-0/+1
| | | | | | The authenc algorithm requires BLKCIPHER to be present. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] null: Add missing Kconfig dependency on BLKCIPHERAdrian Bunk2008-02-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | This patch fixes the following build error caused by commit 3631c650c495d61b1dabf32eb26b46873636e918: <-- snip --> ... LD .tmp_vmlinux1 crypto/built-in.o: In function `skcipher_null_crypt': crypto_null.c:(.text+0x3d14): undefined reference to `blkcipher_walk_virt' crypto_null.c:(.text+0x3d14): relocation truncated to fit: R_MIPS_26 against `blkcipher_walk_virt' crypto/built-in.o: In function `$L32': crypto_null.c:(.text+0x3d54): undefined reference to `blkcipher_walk_done' crypto_null.c:(.text+0x3d54): relocation truncated to fit: R_MIPS_26 against `blkcipher_walk_done' crypto/built-in.o:(.data+0x2e8): undefined reference to `crypto_blkcipher_type' make[1]: *** [.tmp_vmlinux1] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] tcrypt: Add missing Kconfig dependency on BLKCIPHERFrederik Deweerdt2008-02-151-0/+1
| | | | | | | | | | | Building latest git fails with the following error: ERROR: "crypto_alloc_ablkcipher" [crypto/tcrypt.ko] undefined! This appears to happen because CONFIG_CRYPTO_TEST is set while CONFIG_CRYPTO_BLKCIPHER is not. The following patch fixes the problem for me. Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] salsa20-asm: Remove unnecessary dependency on CRYPTO_SALSA20Tan Swee Heng2008-01-111-2/+0
| | | | | Signed-off-by: Tan Swee Heng <thesweeheng@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] tcrypt: Add select of AEADSebastian Siewior2008-01-111-0/+1
| | | | | | | | ERROR: "crypto_aead_setauthsize" [crypto/tcrypt.ko] undefined! ERROR: "crypto_alloc_aead" [crypto/tcrypt.ko] undefined! Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] salsa20: Add x86-64 assembly versionTan Swee Heng2008-01-111-0/+15
| | | | | | | | | | This is the x86-64 version of the Salsa20 stream cipher algorithm. The original assembly code came from <http://cr.yp.to/snuffle/salsa20/amd64-3/salsa20.s>. It has been reformatted for clarity. Signed-off-by: Tan Swee Heng <thesweeheng@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] salsa20_i586: Salsa20 stream cipher algorithm (i586 version)Tan Swee Heng2008-01-111-0/+15
| | | | | | | | | | | This patch contains the salsa20-i586 implementation. The original assembly code came from <http://cr.yp.to/snuffle/salsa20/x86-pm/salsa20.s>. I have reformatted it (added indents) so that it matches the other algorithms in arch/x86/crypto. Signed-off-by: Tan Swee Heng <thesweeheng@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] seqiv: Add select AEAD in KconfigHerbert Xu2008-01-111-0/+1
| | | | | | | | Now that seqiv supports AEAD algorithms it needs to select the AEAD option. Thanks to Erez Zadok for pointing out the problem. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] ccm: Added CCM modeJoy Latten2008-01-111-0/+7
| | | | | | | | This patch adds Counter with CBC-MAC (CCM) support. RFC 3610 and NIST Special Publication 800-38C were referenced. Signed-off-by: Joy Latten <latten@austin.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] seqiv: Add Sequence Number IV GeneratorHerbert Xu2008-01-111-0/+9
| | | | | | | | | This generator generates an IV based on a sequence number by xoring it with a salt. This algorithm is mainly useful for CTR and similar modes. This patch also sets it as the default IV generator for ctr. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] blkcipher: Merge ablkcipher and blkcipher into one option/moduleHerbert Xu2008-01-111-5/+1
| | | | | | | | | | | | | With the impending addition of the givcipher type, both blkcipher and ablkcipher algorithms will use it to create givcipher objects. As such it no longer makes sense to split the system between ablkcipher and blkcipher. In particular, both ablkcipher.c and blkcipher.c would need to use the givcipher type which has to reside in ablkcipher.c since it shares much code with it. This patch merges the two Kconfig options as well as the modules into one. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] authenc: Select HASH in KconfigBorislav Petkov2008-01-111-0/+1
| | | | | | | | | | | | | | | | | | | | | i get here: ---- LD vmlinux SYSMAP System.map SYSMAP .tmp_System.map Building modules, stage 2. MODPOST 226 modules ERROR: "crypto_hash_type" [crypto/authenc.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 --- which fails because crypto_hash_type is declared in crypto/hash.c. You might wanna fix it like so: Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] lzo: Add LZO compression algorithm supportZoltan Sogor2008-01-111-0/+8
| | | | | | | Add LZO compression algorithm support Signed-off-by: Zoltan Sogor <weth@inf.u-szeged.hu> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] gcm: New algorithmMikko Herranen2008-01-111-0/+9
| | | | | | | | | | | Add GCM/GMAC support to cryptoapi. GCM (Galois/Counter Mode) is an AEAD mode of operations for any block cipher with a block size of 16. The typical example is AES-GCM. Signed-off-by: Mikko Herranen <mh1@iki.fi> Reviewed-by: Mika Kukkonen <mika.kukkonen@nsn.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] salsa20: Salsa20 stream cipherTan Swee Heng2008-01-111-0/+12
| | | | | | | | | | | | | | | | This patch implements the Salsa20 stream cipher using the blkcipher interface. The core cipher code comes from Daniel Bernstein's submission to eSTREAM: http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/salsa20/full/ref/ The test vectors comes from: http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/salsa20/full/ It has been tested successfully with "modprobe tcrypt mode=34" on an UML instance. Signed-off-by: Tan Swee Heng <thesweeheng@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] sha256-generic: Extend sha256_generic.c to support SHA-224Jonathan Lynch2008-01-111-1/+4
| | | | | | | | | | | | | | | | | Resubmitting this patch which extends sha256_generic.c to support SHA-224 as described in FIPS 180-2 and RFC 3874. HMAC-SHA-224 as described in RFC4231 is then supported through the hmac interface. Patch includes test vectors for SHA-224 and HMAC-SHA-224. SHA-224 chould be chosen as a hash algorithm when 112 bits of security strength is required. Patch generated against the 2.6.24-rc1 kernel and tested against 2.6.24-rc1-git14 which includes fix for scatter gather implementation for HMAC. Signed-off-by: Jonathan Lynch <jonathan.lynch@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] aes-i586: Remove setkeySebastian Siewior2008-01-111-0/+1
| | | | | | | The setkey() function can be shared with the generic algorithm. Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] ctr: Remove default MSebastian Siewior2008-01-111-1/+0
| | | | | | | NO other block mode is M by default. Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] aes-x86-64: Remove setkeySebastian Siewior2008-01-111-0/+1
| | | | | | | The setkey() function can be shared with the generic algorithm. Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] ctr: Add CTR (Counter) block cipher modeJoy Latten2008-01-111-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements CTR mode for IPsec. It is based off of RFC 3686. Please note: 1. CTR turns a block cipher into a stream cipher. Encryption is done in blocks, however the last block may be a partial block. A "counter block" is encrypted, creating a keystream that is xor'ed with the plaintext. The counter portion of the counter block is incremented after each block of plaintext is encrypted. Decryption is performed in same manner. 2. The CTR counterblock is composed of, nonce + IV + counter The size of the counterblock is equivalent to the blocksize of the cipher. sizeof(nonce) + sizeof(IV) + sizeof(counter) = blocksize The CTR template requires the name of the cipher algorithm, the sizeof the nonce, and the sizeof the iv. ctr(cipher,sizeof_nonce,sizeof_iv) So for example, ctr(aes,4,8) specifies the counterblock will be composed of 4 bytes from a nonce, 8 bytes from the iv, and 4 bytes for counter since aes has a blocksize of 16 bytes. 3. The counter portion of the counter block is stored in big endian for conformance to rfc 3686. Signed-off-by: Joy Latten <latten@austin.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] xts: XTS blockcipher mode implementation without partial blocksRik Snel2007-10-101-0/+11
| | | | | | | | | | | | | | | XTS currently considered to be the successor of the LRW mode by the IEEE1619 workgroup. LRW was discarded, because it was not secure if the encyption key itself is encrypted with LRW. XTS does not have this problem. The implementation is pretty straightforward, a new function was added to gf128mul to handle GF(128) elements in ble format. Four testvectors from the specification http://grouper.ieee.org/groups/1619/email/pdf00086.pdf were added, and they verify on my system. Signed-off-by: Rik Snel <rsnel@cube.dyndns.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] aead: Add authencHerbert Xu2007-10-101-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the authenc algorithm which constructs an AEAD algorithm from an asynchronous block cipher and a hash. The construction is done by concatenating the encrypted result from the cipher with the output from the hash, as is used by the IPsec ESP protocol. The authenc algorithm exists as a template with four parameters: authenc(auth, authsize, enc, enckeylen). The authentication algorithm, the authentication size (i.e., truncating the output of the authentication algorithm), the encryption algorithm, and the encryption key length. Both the size field and the key length field are in bytes. For example, AES-128 with SHA1-HMAC would be represented by authenc(hmac(sha1), 12, cbc(aes), 16) The key for the authenc algorithm is the concatenation of the keys for the authentication algorithm with the encryption algorithm. For the above example, if a key of length 36 bytes is given, then hmac(sha1) would receive the first 20 bytes while the last 16 would be given to cbc(aes). Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Add aead crypto typeHerbert Xu2007-10-101-0/+4
| | | | | | | | | | | | | | | | | This patch adds crypto_aead which is the interface for AEAD (Authenticated Encryption with Associated Data) algorithms. AEAD algorithms perform authentication and encryption in one step. Traditionally users (such as IPsec) would use two different crypto algorithms to perform these. With AEAD this comes down to one algorithm and one operation. Of course if traditional algorithms were used we'd still be doing two operations underneath. However, real AEAD algorithms may allow the underlying operations to be optimised as well. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] seed: New cipher algorithmHye-Shik Chang2007-10-101-0/+14
| | | | | | | | | | | | | | This patch adds support for the SEED cipher (RFC4269). This patch have been used in few VPN appliance vendors in Korea for several years. And it was verified by KISA, who developed the algorithm itself. As its importance in Korean banking industry, it would be great if linux incorporates the support. Signed-off-by: Hye-Shik Chang <perky@FreeBSD.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] Kconfig: Remove "default m"sAdrian Bunk2007-10-101-3/+0
| | | | | | | | Other options requiring specific block cipher algorithms already have the appropriate select's. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6David S. Miller2007-07-141-5/+1
|\ | | | | | | | | | | Conflicts: crypto/Kconfig
| * [CRYPTO] Kconfig: Use menuconfig objectsJan Engelhardt2007-07-111-5/+1
| | | | | | | | | | | | | | | | | | Use menuconfigs instead of menus, so the whole menu can be disabled at once instead of going through all options. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | async_tx: add the async_tx apiDan Williams2007-07-131-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The async_tx api provides methods for describing a chain of asynchronous bulk memory transfers/transforms with support for inter-transactional dependencies. It is implemented as a dmaengine client that smooths over the details of different hardware offload engine implementations. Code that is written to the api can optimize for asynchronous operation and the api will fit the chain of operations to the available offload resources. I imagine that any piece of ADMA hardware would register with the 'async_*' subsystem, and a call to async_X would be routed as appropriate, or be run in-line. - Neil Brown async_tx exploits the capabilities of struct dma_async_tx_descriptor to provide an api of the following general format: struct dma_async_tx_descriptor * async_<operation>(..., struct dma_async_tx_descriptor *depend_tx, dma_async_tx_callback cb_fn, void *cb_param) { struct dma_chan *chan = async_tx_find_channel(depend_tx, <operation>); struct dma_device *device = chan ? chan->device : NULL; int int_en = cb_fn ? 1 : 0; struct dma_async_tx_descriptor *tx = device ? device->device_prep_dma_<operation>(chan, len, int_en) : NULL; if (tx) { /* run <operation> asynchronously */ ... tx->tx_set_dest(addr, tx, index); ... tx->tx_set_src(addr, tx, index); ... async_tx_submit(chan, tx, flags, depend_tx, cb_fn, cb_param); } else { /* run <operation> synchronously */ ... <operation> ... async_tx_sync_epilog(flags, depend_tx, cb_fn, cb_param); } return tx; } async_tx_find_channel() returns a capable channel from its pool. The channel pool is organized as a per-cpu array of channel pointers. The async_tx_rebalance() routine is tasked with managing these arrays. In the uniprocessor case async_tx_rebalance() tries to spread responsibility evenly over channels of similar capabilities. For example if there are two copy+xor channels, one will handle copy operations and the other will handle xor. In the SMP case async_tx_rebalance() attempts to spread the operations evenly over the cpus, e.g. cpu0 gets copy channel0 and xor channel0 while cpu1 gets copy channel 1 and xor channel 1. When a dependency is specified async_tx_find_channel defaults to keeping the operation on the same channel. A xor->copy->xor chain will stay on one channel if it supports both operation types, otherwise the transaction will transition between a copy and a xor resource. Currently the raid5 implementation in the MD raid456 driver has been converted to the async_tx api. A driver for the offload engines on the Intel Xscale series of I/O processors, iop-adma, is provided in a later commit. With the iop-adma driver and async_tx, raid456 is able to offload copy, xor, and xor-zero-sum operations to hardware engines. On iop342 tiobench showed higher throughput for sequential writes (20 - 30% improvement) and sequential reads to a degraded array (40 - 55% improvement). For the other cases performance was roughly equal, +/- a few percentage points. On a x86-smp platform the performance of the async_tx implementation (in synchronous mode) was also +/- a few percentage points of the original implementation. According to 'top' on iop342 CPU utilization drops from ~50% to ~15% during a 'resync' while the speed according to /proc/mdstat doubles from ~25 MB/s to ~50 MB/s. The tiobench command line used for testing was: tiobench --size 2048 --block 4096 --block 131072 --dir /mnt/raid --numruns 5 * iop342 had 1GB of memory available Details: * if CONFIG_DMA_ENGINE=n the asynchronous path is compiled away by making async_tx_find_channel a static inline routine that always returns NULL * when a callback is specified for a given transaction an interrupt will fire at operation completion time and the callback will occur in a tasklet. if the the channel does not support interrupts then a live polling wait will be performed * the api is written as a dmaengine client that requests all available channels * In support of dependencies the api implicitly schedules channel-switch interrupts. The interrupt triggers the cleanup tasklet which causes pending operations to be scheduled on the next channel * Xor engines treat an xor destination address differently than a software xor routine. To the software routine the destination address is an implied source, whereas engines treat it as a write-only destination. This patch modifies the xor_blocks routine to take a an explicit destination address to mirror the hardware. Changelog: * fixed a leftover debug print * don't allow callbacks in async_interrupt_cond * fixed xor_block changes * fixed usage of ASYNC_TX_XOR_DROP_DEST * drop dma mapping methods, suggested by Chris Leech * printk warning fixups from Andrew Morton * don't use inline in C files, Adrian Bunk * select the API when MD is enabled * BUG_ON xor source counts <= 1 * implicitly handle hardware concerns like channel switching and interrupts, Neil Brown * remove the per operation type list, and distribute operation capabilities evenly amongst the available channels * simplify async_tx_find_channel to optimize the fast path * introduce the channel_table_initialized flag to prevent early calls to the api * reorganize the code to mimic crypto * include mm.h as not all archs include it in dma-mapping.h * make the Kconfig options non-user visible, Adrian Bunk * move async_tx under crypto since it is meant as 'core' functionality, and the two may share algorithms in the future * move large inline functions into c files * checkpatch.pl fixes * gpl v2 only correction Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-By: NeilBrown <neilb@suse.de>
* | xor: make 'xor_blocks' a library routine for use with async_txDan Williams2007-07-131-0/+6
|/ | | | | | | | | | | | | | | | | | The async_tx api tries to use a dma engine for an operation, but will fall back to an optimized software routine otherwise. Xor support is implemented using the raid5 xor routines. For organizational purposes this routine is moved to a common area. The following fixes are also made: * rename xor_block => xor_blocks, suggested by Adrian Bunk * ensure that xor.o initializes before md.o in the built-in case * checkpatch.pl fixes * mark calibrate_xor_blocks __init, Adrian Bunk Cc: Adrian Bunk <bunk@stusta.de> Cc: NeilBrown <neilb@suse.de> Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* Fix trivial typos in Kconfig* filesDavid Sterba2007-05-091-1/+1
| | | | | | | Fix several typos in help text in Kconfig* files. Signed-off-by: David Sterba <dave@jikos.cz> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [CRYPTO] cryptd: Add software async crypto daemonHerbert Xu2007-05-021-0/+9
| | | | | | | | This patch adds the cryptd module which is a template that takes a synchronous software crypto algorithm and converts it to an asynchronous one by executing it in a kernel thread. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Add async blkcipher typeHerbert Xu2007-05-021-0/+4
| | | | | | | | This patch adds the mid-level interface for asynchronous block ciphers. It also includes a generic queueing mechanism that can be used by other asynchronous crypto operations in future. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* Merge branch 'HEAD' of ↵David S. Miller2007-02-081-0/+31
|\ | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6 Conflicts: crypto/Kconfig
| * [CRYPTO] camellia: Add Kconfig entry.Noriaki TAKAMIYA2007-02-071-0/+15
| | | | | | | | | | | | | | This patch adds the Kconfig entry for Camellia. Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] fcrypt: Add FCrypt from RxRPCDavid Howells2007-02-071-0/+7
| | | | | | | | | | | | | | Add a crypto module to provide FCrypt encryption as used by RxRPC. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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