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Cc: David Marchand <david.marchand@6wind.com>,
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From: Ferruh Yigit <ferruh.yigit@intel.com>
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Date: Mon, 14 Mar 2016 15:32:52 +0000
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Subject: Re: [dpdk-dev] [PATCH v3 0/2] slow data path communication between
 DPDK port and Linux
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On 3/9/2016 11:17 AM, Ferruh Yigit wrote:
> This patch sent to keep record of latest status of the work.
> 
> 
> This is slow data path communication implementation based on existing KNI.
> 
> Difference is: librte_kni converted into a PMD, kdp kernel module is almost
> same except all control path functionality removed and some simplification done.
> 
> Motivation is to simplify slow path data communication.
> Now any application can use this new PMD to send/get data to Linux kernel.
> 
> PMD supports two communication methods:
> 
> 1) KDP kernel module
> PMD initialization functions handles creating virtual interfaces (with help of
> kdp kernel module) and created FIFO. FIFO is used to share data between
> userspace and kernelspace. This is default method.
> 
> 2) tun/tap module
> When KDP module is not inserted, PMD creates tap interface and transfers
> packets using tap interface.
> 
> In long term this patch intends to replace the KNI and KNI will be
> depreciated.
> 

Self-NACK: Will work on another option that does not introduce new
kernel module.