* [Question] Confusion of the meaning for encrypto API's return value
@ 2019-12-16 7:18 Xu Zaibo
2019-12-16 17:32 ` Eric Biggers
0 siblings, 1 reply; 2+ messages in thread
From: Xu Zaibo @ 2019-12-16 7:18 UTC (permalink / raw)
To: linux-crypto, dm-devel; +Cc: forest.zhouchang, zhangwei375
Hi,
I get a confusion.
According to my understanding, That 'crypto_skcipher_encrypt(request)'
returns '-EBUSY '
means the caller should call this API again with the request. However,
as my knowledge in
'dm-crypt', this means the caller need not call this request again,
because 'dm-crypt' thinks
that the driver of 'crypto_skcipher_encrypt' will send the request again
as it is not busy.
So, my question is: what's the meaning of
'crypto_skcipher_encrypt(request)' returning '-EBUSY '?
Cheers,
Zaibo
.
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [Question] Confusion of the meaning for encrypto API's return value
2019-12-16 7:18 [Question] Confusion of the meaning for encrypto API's return value Xu Zaibo
@ 2019-12-16 17:32 ` Eric Biggers
0 siblings, 0 replies; 2+ messages in thread
From: Eric Biggers @ 2019-12-16 17:32 UTC (permalink / raw)
To: Xu Zaibo; +Cc: forest.zhouchang, dm-devel, linux-crypto, zhangwei375
On Mon, Dec 16, 2019 at 03:18:54PM +0800, Xu Zaibo wrote:
> Hi,
>
> I get a confusion.
>
> According to my understanding, That 'crypto_skcipher_encrypt(request)'
> returns '-EBUSY '
>
> means the caller should call this API again with the request. However, as my
> knowledge in
>
> 'dm-crypt', this means the caller need not call this request again, because
> 'dm-crypt' thinks
>
> that the driver of 'crypto_skcipher_encrypt' will send the request again as
> it is not busy.
>
> So, my question is: what's the meaning of
> 'crypto_skcipher_encrypt(request)' returning '-EBUSY '?
>
>
> Cheers,
>
-EBUSY means that the request was put on the backlog. It will still be
completed eventually.
- Eric
^ permalink raw reply [flat|nested] 2+ messages in thread
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