netdev - Re: [Intel-wired-lan] [PATCH iwl-next v7 04/12] iavf: add support for negotiating flexible RXDID format

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Date: Sat, 8 Jun 2024 13:58:04 +0100
From: Simon Horman <horms@...nel.org>
To: Mateusz Polchlopek <mateusz.polchlopek@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	Jacob Keller <jacob.e.keller@...el.com>,
	Wojciech Drewek <wojciech.drewek@...el.com>
Subject: Re: [Intel-wired-lan] [PATCH iwl-next v7 04/12] iavf: add support
 for negotiating flexible RXDID format

On Tue, Jun 04, 2024 at 09:13:52AM -0400, Mateusz Polchlopek wrote:
> From: Jacob Keller <jacob.e.keller@...el.com>
> 
> Enable support for VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC, to enable the VF
> driver the ability to determine what Rx descriptor formats are
> available. This requires sending an additional message during
> initialization and reset, the VIRTCHNL_OP_GET_SUPPORTED_RXDIDS. This
> operation requests the supported Rx descriptor IDs available from the
> PF.
> 
> This is treated the same way that VLAN V2 capabilities are handled. Add
> a new set of extended capability flags, used to process send and receipt
> of the VIRTCHNL_OP_GET_SUPPORTED_RXDIDS message.
> 
> This ensures we finish negotiating for the supported descriptor formats
> prior to beginning configuration of receive queues.
> 
> This change stores the supported format bitmap into the iavf_adapter
> structure. Additionally, if VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC is enabled
> by the PF, we need to make sure that the Rx queue configuration
> specifies the format.
> 
> Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
> Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>
> Co-developed-by: Mateusz Polchlopek <mateusz.polchlopek@...el.com>
> Signed-off-by: Mateusz Polchlopek <mateusz.polchlopek@...el.com>

Reviewed-by: Simon Horman <horms@...nel.org>