crypto: hisilicon/hpre - support the hpre algorithm fallback

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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>

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Weili Qian 2025-12-18 21:44:51 +08:00 • committed by Herbert Xu

parent 73398f85a4

commit 6aff4d977e

1 changed files with 199 additions and 39 deletions

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drivers/crypto/hisilicon/hpre/hpre_crypto.c

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