-----Original Message----- > Date: Mon, 11 Jun 2018 05:02:01 +0300 > From: Kevin Wilson <wkev...@gmail.com> > To: dev@dpdk.org, jerin.ja...@caviumnetworks.com > Subject: Is there any HW requirement for a NIC to use the eventdev API for > implementing Rx/Tx? > > Hi, > According to what I understand from: > http://dpdk.org/doc/guides/eventdevs/index.html > > only 3 drivers currently use the eventdev API, > NXP DPAA,NXP DPAA2 and Octeon SSOVF.
There are two more SW drivers too(implementing the same eventdev API). http://dpdk.org/doc/guides/eventdevs/sw.html http://dpdk.org/doc/guides/eventdevs/opdl.html > > My question is: is there any HW requirements from a NIC > so that it will use the eventdev API for RX/TX instead > of the traditional polling mode used by all the other PMD drivers ? > Or theoretically and practically, one can implement DPDK driver using the > eventndev API for Rx/Tx for any NIC ? No HW requirement. For the poll mode ONLY NICs, application can use SW event driver to enable event mode. The NIC driver(ethdev) completely isolated from eventdev. One can use eventdev -> ethdev RX adapter to take the events from NICs and injects to eventdev. Based on the HW capability of underneath eventdev and/or ethdev PMD, it can choose to do in HW or with help of a service core, But the application interface is same irrespective HW or SW or combination of two. https://dpdk.org/doc/guides/prog_guide/event_ethernet_rx_adapter.html /Jerin > > Regards, > Kevin
