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Date: Thu, 7 Sep 2023 12:38:39 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: "Samudrala, Sridhar" <sridhar.samudrala@intel.com>
Cc: Junfeng Guo <junfeng.guo@intel.com>, <intel-wired-lan@lists.osuosl.org>,
 <netdev@vger.kernel.org>, <anthony.l.nguyen@intel.com>,
 <jesse.brandeburg@intel.com>, <qi.z.zhang@intel.com>, <ivecera@redhat.com>,
 <horms@kernel.org>, <edumazet@google.com>, <davem@davemloft.net>,
 <pabeni@redhat.com>
Subject: Re: [PATCH iwl-next v9 00/15] Introduce the Parser Library
Message-ID: <20230907123839.59a10f23@kernel.org>
In-Reply-To: <9d236687-6161-3e1b-f73f-ed9358e47577@intel.com>
References: <20230904021455.3944605-1-junfeng.guo@intel.com>
	<20230905153734.18b9bc84@kernel.org>
	<9d236687-6161-3e1b-f73f-ed9358e47577@intel.com>
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On Thu, 7 Sep 2023 14:08:15 -0500 Samudrala, Sridhar wrote:
> >> This patch set provides a way for applications to send down training
> >> packets & masks (in binary) to the driver. Then these binary data
> >> would be used by the driver to generate certain data that are needed
> >> to create a filter rule in the filtering stage of switch/RSS/FDIR.  
> > 
> > What's the API for the user? I see a whole bunch of functions added here
> > which never get called.  
> 
> This link shows an early version of a user of this patch series
> 	https://lore.kernel.org/intel-wired-lan/20230818064703.154183-1-junfeng.guo@intel.com/
> 
> This API is planned to be exposed to VF drivers via virtchnl interface 
> to pass raw training packets and masks. The VF using this API can only 
> steer RX traffic directed that VF to its own queues.

FWIW I have no idea what a "training packet and mask" is either.
Hopefully next version will come with a _much_ clearer high
level explanation.