> -----Original Message----- > From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Alejandro Lucero > Sent: Friday, September 1, 2017 3:12 PM > To: dev@dpdk.org > Subject: [dpdk-dev] [PATCH v2 16/18] doc: update NFP with PF support > information > > NFP PMD has now support for both, PF and VFs. This patch updates the guide > and give some information about implications. > > Signed-off-by: Alejandro Lucero <alejandro.luc...@netronome.com>
Minor comments below. >.. > -The NFP Linux kernel drivers (including the required PF driver for the > -NFP) are available on Github at > +The NFP Linux netdev kernel driver for VFs is part of vanilla kernel > +since kernel vesion 4.5, and support for the PF since kernel version s/vesion/version/ > -DPDK runs in userspace and PMDs uses the Linux kernel UIO interface to - > allow access to physical devices from userspace. The NFP PMD requires -the > **igb_uio** UIO driver, available with DPDK, to perform correct - > initialization. > +NFP PMD needs to be used along with UIO **igb_uio** or VFIO (vfio-pci) > +Linux kernel driver. Probably better to fixed-width quote these as``igb_uio`` or ``vfio-pci``, here and in other places. > +Using the PF > +------------ > + > +NFP PMD has support for using the NFP PF as another DPDK port, but it > +has not s/but it has not/but it does not have/ > +possible to use the PMD with the VFs if the PF is being used by DPDK, > +this is, NFP PF bound to igb_uio or vfio-pci kernel drivers. Future s/this is, NFP PF/that is, with the NFP PF/ > +DPDK version will have a PMD able to work with the PF and VFs at the > +same time and with the PF implementing VF management along wih other PF- s/wih/with/ > +Depending on the Netronome's product installed in the system, firmware s/Netronome's/Netronome/ > +files should be available under /lib/firmware/netronome. DPDK PMD > +supporting the PF requires a specific link, > +/lib/firmware/netronome/nic_dpdk_default.nffw, which should be created > automatically with Netronome's Agilio products installation. Fixed-width quote the file paths: ``/lib/firmware/netronome``, etc. > + > +PF multiport support > +-------------------- > + > +Some NFP cards support several physical ports with just one single PCI > device. > +DPDK core is designed with the 1:1 relationship between PCI devices and > +DPDK ports, so NFP PMD PF support requires to handle the multiport case s/to handle/handling/ > specifically. > +During NFP PF initialization, the PMD will extract the information > +about the number of PF ports from the firmware and will create as many > +DPDK ports as needed. > + > +Because the unusual relationship between a single PCI device and > +several DPDK ports, there are some limitations when using more than one > +PF DPDK ports: there is no support for RX interrrupts and it is not s/interrrupts/interrupts/ Reviewed-by: John McNamara <john.mcnam...@intel.com>
