On 12/15/2016 11:54 AM, Ciara Loftus wrote: > In order to use dpdk ports in ovs they have to be bound to a DPDK > compatible driver before ovs is started. > > This patch adds the possibility to hotplug (or hot-unplug) a device > after ovs has been started. The implementation adds two appctl commands: > netdev-dpdk/attach and netdev-dpdk/detach > > After the user attaches a new device, it has to be added to a bridge > using the add-port command, similarly, before detaching a device, > it has to be removed using the del-port command. > > Signed-off-by: Mauricio Vasquez B <mauricio.vasquezber...@studenti.polito.it> > Signed-off-by: Ciara Loftus <ciara.lof...@intel.com> > Co-authored-by: Ciara Loftus <ciara.lof...@intel.com> > --- > Changelog: > * Use xasprintf instead of snprintf when reporting attach/detach errors. > * Updated format of link in docs to comply with new format. > * Remove 'port-' from appctl netdev-dpdk/(port-)attach and detach commands > * Free 'response' in attach and detach functions in netdev_dpdk > * Add my Sign-off and Co-author tags > * Fix docs - use port name for detach not PCI > > Documentation/intro/install/dpdk-advanced.rst | 25 +++++++ > NEWS | 1 + > lib/netdev-dpdk.c | 95 > +++++++++++++++++++++++++-- > 3 files changed, 115 insertions(+), 6 deletions(-) > > diff --git a/Documentation/intro/install/dpdk-advanced.rst > b/Documentation/intro/install/dpdk-advanced.rst > index 44d1cd7..0e78142 100644 > --- a/Documentation/intro/install/dpdk-advanced.rst > +++ b/Documentation/intro/install/dpdk-advanced.rst > @@ -932,6 +932,31 @@ validate the suitability of different vSwitch > implementations in a telco > deployment environment. More information can be found on the `OPNFV wiki > <https://wiki.opnfv.org/display/vsperf/VSperf+Home>`__. > > +Port Hotplug > +------------ > + > +OvS supports port hotplugging, it allows to use ports that were not bound > +to DPDK when vswitchd was started. > +In order to attach a port, it has to be bound to DPDK using the > +dpdk_nic_bind.py script: > + > + $ $DPDK_DIR/tools/dpdk_nic_bind.py --bind=igb_uio 0000:01:00.0 > + > +Then it can be attached to OVS: > + > + $ ovs-appctl netdev-dpdk/attach 0000:01:00.0 > + > +At this point, the user can create a ovs port using the add-port command. > + > +It is also possible to detach a port from ovs, the user has to remove the > +port using the del-port command, then it can be detached using: > + > + $ ovs-appctl netdev-dpdk/detach dpdk0 > + > +This feature is not supported with VFIO and could not work with some NICs.
Does it only work with igb_uio? What about uio_pci_generic? nit - 'could not' makes things a bit vague - how about 'does not'. _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
