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crypto: drbg - move to generic async completion

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DRBG is starting an async. crypto op and waiting for it complete.
Move it over to generic code doing the same.

The code now also passes CRYPTO_TFM_REQ_MAY_SLEEP flag indicating
crypto request memory allocation may use GFP_KERNEL which should
be perfectly fine as the code is obviously sleeping for the
completion of the request any way.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gilad Ben-Yossef
2017-10-18 08:00:41 +01:00
committed by Herbert Xu
parent 0ca2a04ac3
commit 85a2dea4bd
2 changed files with 10 additions and 29 deletions
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include/crypto/drbg.h
+1 -2
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@@ -126,8 +126,7 @@ struct drbg_state {
__u8 *ctr_null_value; /* CTR mode aligned zero buf */
__u8 *outscratchpadbuf; /* CTR mode output scratchpad */
__u8 *outscratchpad; /* CTR mode aligned outbuf */
struct completion ctr_completion; /* CTR mode async handler */
int ctr_async_err; /* CTR mode async error */
struct crypto_wait ctr_wait; /* CTR mode async wait obj */
bool seeded; /* DRBG fully seeded? */
bool pr; /* Prediction resistance enabled? */