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.
> +
> +
> +\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}
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