crypto: hisilicon/hpre - support the hpre algorithm fallback

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[ Upstream commit 6aff4d977e ]

When all hardware queues are busy and no shareable queue,
new processes fail to apply for queues. To avoid affecting
tasks, support fallback mechanism when hardware queues are
unavailable.

HPRE driver supports DH algorithm, limited to prime numbers up to 4K.
It supports prime numbers larger than 4K via fallback mechanism.

Fixes: 05e7b906aa ("crypto: hisilicon/hpre - add 'ECDH' algorithm")
Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Weili Qian 2025-12-18 21:44:51 +08:00 • committed by Greg Kroah-Hartman

parent c990abb136

commit 9f35acf698

1 changed files with 199 additions and 39 deletions

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drivers/crypto/hisilicon/hpre/hpre_crypto.c

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