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crypto: support multiple threads accessing one QCryptoBlock

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The two thing that should be handled are cipher and ivgen. For ivgen
the solution is just mutex, as iv calculations should not be long in
comparison with encryption/decryption. And for cipher let's just keep
per-thread ciphers.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2018-12-07 19:13:51 +03:00 • committed by Daniel P. Berrangé
parent 0f0d596cb1
commit c972fa123c
9 changed files with 172 additions and 44 deletions
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2
include/crypto/block.h
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@ -75,6 +75,7 @@ typedef enum {
* @readfunc: callback for reading data from the volume
* @opaque: data to pass to @readfunc
* @flags: bitmask of QCryptoBlockOpenFlags values
* @n_threads: allow concurrent I/O from up to @n_threads threads
* @errp: pointer to a NULL-initialized error object
*
* Create a new block encryption object for an existing
@ -107,6 +108,7 @@ QCryptoBlock *qcrypto_block_open(QCryptoBlockOpenOptions *options,
QCryptoBlockReadFunc readfunc,
void *opaque,
unsigned int flags,
size_t n_threads,
Error **errp);
/**