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linux/crypto
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Ondrej Mosnacek ac3c8f36c3 crypto: lrw - Do not use auxiliary buffer 
This patch simplifies the LRW template to recompute the LRW tweaks from
scratch in the second pass and thus also removes the need to allocate a
dynamic buffer using kmalloc().

As discussed at [1], the use of kmalloc causes deadlocks with dm-crypt.

PERFORMANCE MEASUREMENTS (x86_64)
Performed using: https://gitlab.com/omos/linux-crypto-bench
Crypto driver used: lrw(ecb-aes-aesni)

The results show that the new code has about the same performance as the
old code. For 512-byte message it seems to be even slightly faster, but
that might be just noise.

Before:
       ALGORITHM KEY (b)        DATA (B)   TIME ENC (ns)   TIME DEC (ns)
        lrw(aes)     256              64             200             203
        lrw(aes)     320              64             202             204
        lrw(aes)     384              64             204             205
        lrw(aes)     256             512             415             415
        lrw(aes)     320             512             432             440
        lrw(aes)     384             512             449             451
        lrw(aes)     256            4096            1838            1995
        lrw(aes)     320            4096            2123            1980
        lrw(aes)     384            4096            2100            2119
        lrw(aes)     256           16384            7183            6954
        lrw(aes)     320           16384            7844            7631
        lrw(aes)     384           16384            8256            8126
        lrw(aes)     256           32768           14772           14484
        lrw(aes)     320           32768           15281           15431
        lrw(aes)     384           32768           16469           16293

After:
       ALGORITHM KEY (b)        DATA (B)   TIME ENC (ns)   TIME DEC (ns)
        lrw(aes)     256              64             197             196
        lrw(aes)     320              64             200             197
        lrw(aes)     384              64             203             199
        lrw(aes)     256             512             385             380
        lrw(aes)     320             512             401             395
        lrw(aes)     384             512             415             415
        lrw(aes)     256            4096            1869            1846
        lrw(aes)     320            4096            2080            1981
        lrw(aes)     384            4096            2160            2109
        lrw(aes)     256           16384            7077            7127
        lrw(aes)     320           16384            7807            7766
        lrw(aes)     384           16384            8108            8357
        lrw(aes)     256           32768           14111           14454
        lrw(aes)     320           32768           15268           15082
        lrw(aes)     384           32768           16581           16250

[1] https://lkml.org/lkml/2018/8/23/1315

Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-09-21 13:24:52 +08:00
..
asymmetric_keys Replace magic for trusting the secondary keyring with #define 2018-08-16 09:57:20 -07:00
async_tx async_pq: Remove VLA usage 2018-06-18 20:17:38 +05:30
842.c crypto: acomp - add support for 842 via scomp 2016-10-25 11:08:33 +08:00
ablkcipher.c crypto: ablkcipher - fix crash flushing dcache in error path 2018-08-03 18:06:04 +08:00
acompress.c crypto: acomp - allow registration of multiple acomps 2017-04-21 20:30:50 +08:00
aead.c crypto: aead - prevent using AEADs without setting key 2018-01-12 23:03:39 +11:00
aegis.h crypto: aegis - Add generic AEGIS AEAD implementations 2018-05-19 00:13:58 +08:00
aegis128.c crypto: aead - remove useless setting of type flags 2018-07-09 00:30:26 +08:00
aegis128l.c crypto: aead - remove useless setting of type flags 2018-07-09 00:30:26 +08:00
aegis256.c crypto: aead - remove useless setting of type flags 2018-07-09 00:30:26 +08:00
aes_generic.c crypto: aes-generic - drop alignment requirement 2017-02-11 17:50:43 +08:00
aes_ti.c crypto: aes_ti - fix comment for MixColumns step 2017-06-19 14:11:53 +08:00
af_alg.c net: simplify sock_poll_wait 2018-07-30 09:10:25 -07:00
ahash.c crypto: hash - Remove VLA usage 2018-09-04 11:35:03 +08:00
akcipher.c crypto: Replaced gcc specific attributes with macros from compiler.h 2017-01-13 00:24:39 +08:00
algapi.c crypto: api - Introduce notifier for new crypto algorithms 2018-09-04 11:37:04 +08:00
algboss.c crypto: api - Introduce notifier for new crypto algorithms 2018-09-04 11:37:04 +08:00
algif_aead.c Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
algif_hash.c crypto: hash - Remove VLA usage 2018-09-04 11:35:03 +08:00
algif_rng.c net: remove sock_no_poll 2018-05-26 09:16:44 +02:00
algif_skcipher.c Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
ansi_cprng.c crypto: ansi_cprng - Convert to new rng interface 2015-04-22 09:30:18 +08:00
anubis.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
api.c evm: Don't deadlock if a crypto algorithm is unavailable 2018-07-18 07:27:22 -04:00
arc4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
authenc.c crypto: authenc - don't leak pointers to authenc keys 2018-04-21 00:58:30 +08:00
authencesn.c crypto: authencesn - don't leak pointers to authenc keys 2018-04-21 00:58:30 +08:00
blkcipher.c crypto: blkcipher - fix crash flushing dcache in error path 2018-08-03 18:06:04 +08:00
blowfish_common.c crypto: blowfish - split generic and common c code 2011-09-22 21:25:25 +10:00
blowfish_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
camellia_generic.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
cast5_generic.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
cast6_generic.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
cast_common.c crypto: make tables used from assembler __visible 2013-08-14 20:42:03 +10:00
cbc.c crypto: cbc - Propagate NEED_FALLBACK bit 2017-03-09 18:34:39 +08:00
ccm.c crypto: ccm - Remove VLA usage 2018-09-04 11:35:03 +08:00
cfb.c crypto: remove several VLAs 2018-04-21 00:58:34 +08:00
chacha20_generic.c crypto: chacha20 - Fix chacha20_block() keystream alignment (again) 2018-09-21 13:24:50 +08:00
chacha20poly1305.c crypto: chacha20poly1305 - validate the digest size 2017-12-22 19:02:33 +11:00
cipher.c crypto: remove several VLAs 2018-04-21 00:58:34 +08:00
cmac.c crypto: algapi - make crypto_xor() and crypto_inc() alignment agnostic 2017-02-11 17:52:28 +08:00
compress.c crypto: api - Remove no-op exit_ops code 2016-10-21 11:03:42 +08:00
crc32_generic.c crypto: crc32-generic - remove __crc32_le() 2018-05-27 00:12:09 +08:00
crc32c_generic.c crypto: crc32c-generic - remove cra_alignmask 2018-05-27 00:12:08 +08:00
crct10dif_common.c crypto: crct10dif - Add fallback for broken initrds 2013-09-12 15:31:34 +10:00
crct10dif_generic.c crypto: squash lines for simple wrapper functions 2016-09-13 20:27:26 +08:00
cryptd.c crypto: hash - annotate algorithms taking optional key 2018-01-12 23:03:35 +11:00
crypto_engine.c crypto: engine - Permit to enqueue all async requests 2018-02-15 23:26:50 +08:00
crypto_null.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
crypto_user.c crypto: user - Replace GFP_ATOMIC with GFP_KERNEL in crypto_report 2018-02-15 23:26:47 +08:00
crypto_wq.c crypto: crypto_wq - Fix late crypto work queue initialization 2014-03-21 21:54:28 +08:00
ctr.c crypto: remove several VLAs 2018-04-21 00:58:34 +08:00
cts.c crypto: remove several VLAs 2018-04-21 00:58:34 +08:00
deflate.c crypto: scomp - add support for deflate rfc1950 (zlib) 2017-04-24 18:11:08 +08:00
des_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
dh.c crypto: dh - fix memory leak 2018-07-20 13:51:21 +08:00
dh_helper.c crypto: dh - make crypto_dh_encode_key() make robust 2018-08-03 18:06:06 +08:00
drbg.c crypto: drbg - in-place cipher operation for CTR 2018-08-03 18:05:48 +08:00
ecb.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
ecc.c crypto: ecdh - add public key verification test 2018-07-09 00:26:19 +08:00
ecc.h crypto: ecc - Actually remove stack VLA usage 2018-04-21 00:58:29 +08:00
ecc_curve_defs.h crypto: ecdh - fix typo of P-192 b value 2018-07-20 13:51:22 +08:00
ecdh.c crypto: ecc - Actually remove stack VLA usage 2018-04-21 00:58:29 +08:00
ecdh_helper.c crypto: ecdh - return unsigned value for crypto_ecdh_key_len() 2017-10-12 22:55:00 +08:00
echainiv.c crypto: echainiv - Remove unused alg/spawn variable 2017-12-22 19:52:45 +11:00
fcrypt.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
fips.c crypto: fips - Move fips_enabled sysctl into fips.c 2015-04-23 14:18:09 +08:00
gcm.c crypto: null - Get rid of crypto_{get,put}_default_null_skcipher2() 2017-12-22 19:29:08 +11:00
gf128mul.c crypto: gf128mul - remove incorrect comment 2017-12-22 19:52:40 +11:00
ghash-generic.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
hash_info.c keys, trusted: select hash algorithm for TPM2 chips 2015-12-20 15:27:12 +02:00
hmac.c crypto: hmac - require that the underlying hash algorithm is unkeyed 2017-11-29 13:39:15 +11:00
internal.h crypto: api - Introduce notifier for new crypto algorithms 2018-09-04 11:37:04 +08:00
jitterentropy-kcapi.c crypto: jitterentropy - drop duplicate header module.h 2016-11-17 23:34:52 +08:00
jitterentropy.c crypto: jitterentropy - Delete unnecessary checks before the function call "kzfree" 2015-06-25 23:18:33 +08:00
Kconfig crypto: x86 - remove SHA multibuffer routines and mcryptd 2018-09-04 11:37:04 +08:00
keywrap.c crypto: keywrap - Add missing ULL suffixes for 64-bit constants 2017-11-29 17:33:26 +11:00
khazad.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
kpp.c crypto: Replaced gcc specific attributes with macros from compiler.h 2017-01-13 00:24:39 +08:00
lrw.c crypto: lrw - Do not use auxiliary buffer 2018-09-21 13:24:52 +08:00
lz4.c crypto: lz4 - fixed decompress function to return error code 2017-04-10 19:17:27 +08:00
lz4hc.c crypto: lz4 - fixed decompress function to return error code 2017-04-10 19:17:27 +08:00
lzo.c treewide: use kv[mz]alloc* rather than opencoded variants 2017-05-08 17:15:13 -07:00
Makefile crypto: x86 - remove SHA multibuffer routines and mcryptd 2018-09-04 11:37:04 +08:00
md4.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
md5.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
memneq.c crypto: memneq - fix for archs without efficient unaligned access 2013-12-09 20:09:12 +08:00
michael_mic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
morus640.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux 2018-08-03 17:55:12 +08:00
morus1280.c crypto: aead - remove useless setting of type flags 2018-07-09 00:30:26 +08:00
pcbc.c crypto: remove several VLAs 2018-04-21 00:58:34 +08:00
pcrypt.c crypto: pcrypt - fix freeing pcrypt instances 2017-12-22 19:02:47 +11:00
poly1305_generic.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
proc.c proc: introduce proc_create_seq{,_data} 2018-05-16 07:23:35 +02:00
ripemd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rmd128.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
rmd160.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
rmd256.c crypto: rmd256 - use swap macro in rmd256_transform 2018-07-27 19:28:36 +08:00
rmd320.c crypto: rmd320 - use swap macro in rmd320_transform 2018-07-27 19:28:36 +08:00
rng.c crypto: rng - ensure that the RNG is ready before using 2017-07-28 17:56:00 +08:00
rsa-pkcs1pad.c crypto: rsa-pkcs1pad - Replace GFP_ATOMIC with GFP_KERNEL in pkcs1pad_encrypt_sign_complete 2018-02-15 23:26:47 +08:00
rsa.c crypto: rsa - Remove unneeded error assignment 2018-04-21 00:58:37 +08:00
rsa_helper.c kbuild: rename *-asn1.[ch] to *.asn1.[ch] 2018-04-07 19:04:02 +09:00
rsaprivkey.asn1 crypto: rsa - Store rest of the private key components 2016-07-05 23:05:26 +08:00
rsapubkey.asn1 crypto: akcipher - Changes to asymmetric key API 2015-10-14 22:23:16 +08:00
salsa20_generic.c crypto: salsa20 - Revert "crypto: salsa20 - export generic helpers" 2018-05-31 00:13:57 +08:00
scatterwalk.c crypto: scatterwalk - remove 'chain' argument from scatterwalk_crypto_chain() 2018-08-03 18:06:03 +08:00
scompress.c crypto: scompress - use sgl_alloc() and sgl_free() 2018-01-06 09:18:00 -07:00
seed.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
seqiv.c crypto: seqiv - Remove unused alg/spawn variable 2017-12-22 19:52:45 +11:00
serpent_generic.c crypto: serpent - improve __serpent_setkey with UBSAN 2017-08-09 20:17:54 +08:00
sha1_generic.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
sha3_generic.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux 2018-08-03 17:55:12 +08:00
sha256_generic.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
sha512_generic.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
shash.c crypto: shash - Remove VLA usage in unaligned hashing 2018-09-04 11:37:03 +08:00
simd.c crypto: simd - allow registering multiple algorithms at once 2018-03-03 00:03:17 +08:00
skcipher.c crypto: skcipher - fix crash flushing dcache in error path 2018-08-03 18:06:04 +08:00
sm3_generic.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
sm4_generic.c crypto: sm4 - export encrypt/decrypt routines to other drivers 2018-05-05 14:52:51 +08:00
tcrypt.c crypto: tcrypt - fix ghash-generic speed test 2018-09-21 13:24:51 +08:00
tcrypt.h crypto: tcrypt - Add ChaCha20/Poly1305 speed tests 2015-07-17 21:20:20 +08:00
tea.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
testmgr.c crypto: speck - remove Speck 2018-09-04 11:35:03 +08:00
testmgr.h crypto: testmgr - Add test for LRW counter wrap-around 2018-09-21 13:24:52 +08:00
tgr192.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
twofish_common.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
twofish_generic.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
vmac.c crypto: vmac - remove insecure version with hardcoded nonce 2018-07-01 21:00:44 +08:00
wp512.c crypto: shash - remove useless setting of type flags 2018-07-09 00:30:24 +08:00
xcbc.c crypto: xcbc - Remove VLA usage 2018-09-04 11:35:03 +08:00
xor.c kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK 2017-11-15 18:21:04 -08:00
xts.c crypto: xts - Drop use of auxiliary buffer 2018-09-21 13:24:50 +08:00
zstd.c crypto: zstd - Add zstd support 2018-04-21 00:58:30 +08:00