From: Eric Biggers <ebiggers@kernel.org>
To: Xu Zaibo <xuzaibo@huawei.com>
Cc: forest.zhouchang@huawei.com, dm-devel@redhat.com,
linux-crypto@vger.kernel.org, zhangwei375@huawei.com
Subject: Re: [Question] Confusion of the meaning for encrypto API's return value
Date: Mon, 16 Dec 2019 09:32:17 -0800 [thread overview]
Message-ID: <20191216173217.GD139479@gmail.com> (raw)
In-Reply-To: <7a4edfcb-c140-bf1b-c674-dbb1b30f9b07@huawei.com>
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
WARNING: multiple messages have this Message-ID (diff)
From: Eric Biggers <ebiggers@kernel.org>
To: Xu Zaibo <xuzaibo@huawei.com>
Cc: linux-crypto@vger.kernel.org, dm-devel@redhat.com,
forest.zhouchang@huawei.com, zhangwei375@huawei.com
Subject: Re: [Question] Confusion of the meaning for encrypto API's return value
Date: Mon, 16 Dec 2019 09:32:17 -0800 [thread overview]
Message-ID: <20191216173217.GD139479@gmail.com> (raw)
In-Reply-To: <7a4edfcb-c140-bf1b-c674-dbb1b30f9b07@huawei.com>
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
next prev parent reply other threads:[~2019-12-16 17:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-16 7:18 [Question] Confusion of the meaning for encrypto API's return value Xu Zaibo
2019-12-16 7:18 ` Xu Zaibo
2019-12-16 17:32 ` Eric Biggers [this message]
2019-12-16 17:32 ` Eric Biggers
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