Re: [Qemu-devel] [v22 1/2] virtio-crypto: Add virtio crypto device specification

["Longpeng (Mike)" <longpeng2@huawei.com>]

On 2017/12/6 19:01, Halil Pasic wrote:

> 
> 
> On 12/06/2017 08:37 AM, Longpeng(Mike) wrote:
>> +\field{outcome_len} is the size of struct virtio_crypto_session_input or
>> +ZERO for the session-destroy operation.
> 
> This ain't correct. It should have been something like virtio_crypto_destroy_session_input.
> 

Hi Halil,

I already fixed this just now.
Do you have any other comments on v22 ? I'll send v23 tomorrow if no. :)

-- 
Regards,
Longpeng(Mike)

>> +
>> +
>> +\paragraph{Session operation}\label{sec:Device Types / Crypto Device / Device
>> +Operation / Control Virtqueue / Session operation}
>> +
>> +The session is a handle which describes the cryptographic parameters to be
>> +applied to a number of buffers.
>> +
>> +The following structure stores the result of session creation set by the device:
>> +
>> +\begin{lstlisting}
>> +struct virtio_crypto_session_input {
>> +    /* Device write only portion */
>> +    le64 session_id;
>> +    le32 status;
>> +    le32 padding;
>> +};
>> +\end{lstlisting}
>> +
>> +A request to destroy a session includes the following information:
>> +
>> +\begin{lstlisting}
>> +struct virtio_crypto_destroy_session_flf {
>> +    /* Device read only portion */
>> +    le64  session_id;
>> +    /* Device write only portion */
> 
> This is the device writable portion and thus what we cal op_outcome above.
> So it should have been
> };
> 
> 
> struct virtio_crypto_destroy_session_input {
>> +    le32  status;
>> +    le32  padding;
>> +};
> 
> If we aren't consistent about it the dividing into parts (like op specific
> fixed and variable length (output) fields, operation outcome (input))
> isn't really helpful.
> 
> 
> Regards,
> Halil
>> +\end{lstlisting}
> 
> 
> .
> 


-- 
Regards,
Longpeng(Mike)