> -----Original Message----- > From: Jerin Jacob [mailto:jerin.ja...@caviumnetworks.com] > Sent: Monday, July 24, 2017 15:54 > To: Nipun Gupta <nipun.gu...@nxp.com> > Cc: Nikhil Rao <nikhil....@intel.com>; gage.e...@intel.com; dev@dpdk.org; > tho...@monjalon.net; bruce.richard...@intel.com; > harry.van.haa...@intel.com; Hemant Agrawal <hemant.agra...@nxp.com>; > narender.vang...@intel.com; Abhinandan Gujjar > <abhinandan.guj...@intel.com> > Subject: Re: [PATCH 1/2] eventdev: add event adapter for ethernet Rx queues > > -----Original Message----- > > Date: Mon, 24 Jul 2017 10:10:50 +0000 > > From: Nipun Gupta <nipun.gu...@nxp.com> > > To: Nikhil Rao <nikhil....@intel.com>, "jerin.ja...@caviumnetworks.com" > > <jerin.ja...@caviumnetworks.com> > > CC: "gage.e...@intel.com" <gage.e...@intel.com>, "dev@dpdk.org" > > <dev@dpdk.org>, "tho...@monjalon.net" <tho...@monjalon.net>, > > "bruce.richard...@intel.com" <bruce.richard...@intel.com>, > > "harry.van.haa...@intel.com" <harry.van.haa...@intel.com>, Hemant > Agrawal > > <hemant.agra...@nxp.com>, "narender.vang...@intel.com" > > <narender.vang...@intel.com>, Abhinandan Gujjar > > <abhinandan.guj...@intel.com> > > Subject: RE: [PATCH 1/2] eventdev: add event adapter for ethernet Rx queues > > > > Looking at the rte_event_eth_rx_adapter_queue_add & > event_eth_rx_adapter_service_func > > it seems that this indeed will not fit with the cases where ethdev is > > capable of > enqueing packets > > to the eventdev (as was mentioned in Jerin's first RFC). > > > > In case of hardware based eventdev and queues, these function should also > invoke respective PMD > > HW configs. e.g. In queue case - rte_eventdev and rte_ethdev - both PMDs at > hw level shall be configured. > > > > A typical eventdev hardware will require queues of eth devices will be > configured to directly attach to > > eventdev in the hardware. > > > > Mapping it to NXP eventdev, enabling this functionality requires some > configuration where dev private > > information of both the devices (event dev and eth dev) is required at the > > same > time, > > and the final configuration is provided via eth device to H/W. So, this > > require > inter device communication in DPDK. > > Just like dpaa2 bus layer functions used in another subsystems. You > can export a function from ethdev dpaa2 to eventdev dpaa2 for ethdev rx queue > to eventdev queue connection.
Yes! That could be done to resolve PMD interdependencies. > > > > > Jerin, > > > > I have an impression that Cavium hardware has H/W capability to inject > packets from Ethernet > > devices to event devices? If yes, how do you plan to support it? > > Please check the latest review comments on this patch set > http://dpdk.org/dev/patchwork/patch/26534/. > > Nikhil is changing ops(function pointer) based approach. With that HW > support can be added. This looks great :). Somehow missed them. Thanks, Nipun > > > > > Thanks, > > Nipun > >
