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Re: [PATCH] Add VIF interface V11
- To: Tu Dinh <ngoc-tu.dinh@xxxxxxxxxx>, "win-pv-devel@xxxxxxxxxxxxxxxxxxxx" <win-pv-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Owen Smith <owen.smith@xxxxxxxxxx>
- Date: Thu, 15 Oct 2026 08:25:29 +0000
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- Thread-topic: [PATCH] Add VIF interface V11
>
> diff --git a/include/vif_interface.h b/include/vif_interface.h
> index cc2f626..66053a1 100644
> --- a/include/vif_interface.h
> +++ b/include/vif_interface.h
> @@ -567,17 +567,32 @@ typedef NTSTATUS
> _Out_ PULONGLONG Value
> );
>
> +/*! \typedef XENVIF_VIF_QUERY_RING_COUNT_V8
> + \brief Query the number of shared rings between frontend
> + and backend
> +
> + \param Interface The interface header
> + \param Count Buffer to receive the count
> +*/
> +typedef VOID
> +(*XENVIF_VIF_QUERY_RING_COUNT_V8)(
> + _In_ PINTERFACE Interface,
> + _Out_ PULONG Count
> + );
> +
> /*! \typedef XENVIF_VIF_QUERY_RING_COUNT
> \brief Query the number of shared rings between frontend
> and backend
>
> \param Interface The interface header
> \param Count Buffer to receive the count
> + \param MaxCount Buffer to receive the maximum possible ring count
> */
> typedef VOID
> (*XENVIF_VIF_QUERY_RING_COUNT)(
> _In_ PINTERFACE Interface,
> - _Out_ PULONG Count
> + _Out_ PULONG Count,
> + _Out_ PULONG MaxCount
If both Count and MaxCount were _Out_opt_, then the 1st patch in your xennet
changes
wouldnt need the MaxRingCount value, and the 2nd patch wouldnt need the Dummy
value.
> );
Owen
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