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List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 May 2017 08:27:00 -0000 On 5/12/2017 7:18 PM, Ferruh Yigit wrote: > On 4/19/2017 2:09 PM, Hemant Agrawal wrote: >> Typically when the PMD issues a RX command to DPAA2 hardware, >> the hw writes the available descriptors into the given memory. >> The RX function then processes the frames and prepare them as >> mbufs. >> >> This patch adds support to issue another pull request to hardware >> in another memory location, before we start processing the output >> of the first request. This help in controlling the cpu cycles >> wasted during the wait for the hardware to write the descriptors. >> >> During hw debugging, it may be desired to keep the original >> mode, so the original mode is also preserved and can be controlled >> with an env flag. >> >> Signed-off-by: Hemant Agrawal > > <...> > >> >> + /*If no prefetch is configured. */ >> + if (getenv("DPAA2_RX_NO_PREFETCH")) { > > Instead of getting configuration option from environment variable, can > you please make it argument to the driver? > This will be more consistent to the DPDK usage. I guess you are talking about the devargs. That code is still not cleaned up for non-pci devices. In any case, we will work on that cleanup. > >> + eth_dev->rx_pkt_burst = dpaa2_dev_rx; >> + PMD_INIT_LOG(INFO, "No Prefetch enabled"); >> + } >> + > > <...> >