[dpdk-dev] [PATCH] net/nfp: add CPP bridge as service

[Ferruh Yigit]

On 1/11/2019 1:25 PM, Alejandro Lucero wrote:
> The Netronome's Network Flow Processor chip is highly programmable
> with the goal of processing packets at high speed. Processing units
> and other chip components are available from the host through the
> PCIe CPP(Command Push Pull bus) interface. The NFP PF PMD configures
> a CPP handler for setting up and working with vNICs, perform actions
> like link up or down, or accessing extended stats from the MAC component.
> 
> There exist NFP host tools which access the NFP components for
> programming and debugging but they require the CPP interface. When the
> PMD is bound to the PF, the DPDK app owns the CPP interface, so these
> host tools can not access the NFP through other means like NFP kernel
> drivers.
> 
> This patch adds a CPP bridge using the rte_service API which can be
> enabled by a DPDK app. Interestingly, DPDK clients like OVS will not
> enable specific service cores, but this can be performed with a
> secondary process specifically enabling this CPP bridge service and
> therefore giving access to the NFP to those host tools.
> 
> v2:
>  - Avoid printfs for debugging
>  - fix compilation problems for powerpc
> 
> Signed-off-by: Alejandro Lucero <alejandro.lucero at netronome.com>

Applied to dpdk-next-net/master, thanks.