virtio-crypto: adjust dst_len at ops callback

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For some akcipher operations(eg, decryption of pkcs1pad(rsa)),
the length of returned result maybe less than akcipher_req->dst_len,
we need to recalculate the actual dst_len through the virt-queue
protocol.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: lei he <helei.sig11@bytedance.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20220506131627.180784-5-pizhenwei@bytedance.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

...

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lei he 2022-05-06 21:16:26 +08:00 • committed by Michael S. Tsirkin

parent 977231e8d4

commit a36bd0ad9f

1 changed files with 4 additions and 1 deletions

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drivers/crypto/virtio/virtio_crypto_akcipher_algs.c

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