Show DPDK version if Open vSwitch is compiled with DPDK support.
Version can be retrieved with `ovs-vswitchd --version` or from OVS logs.
Small change in ovs-ctl to avoid breakage on output change.
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Acked-by: Kevin Traynor <ktraynor@redhat.com>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>
DPDK v17.11 introduces support for the vHost IOMMU feature.
This is a security feature, which restricts the vhost memory
that a virtio device may access.
This feature also enables the vhost REPLY_ACK protocol, the
implementation of which is known to work in newer versions of
QEMU (i.e. v2.10.0), but is buggy in older versions (v2.7.0 -
v2.9.0, inclusive). As such, the feature is disabled by default
in (and should remain so), for the aforementioned older QEMU
verions. Starting with QEMU v2.9.1, vhost-iommu-support can
safely be enabled, even without having an IOMMU device, with
no performance penalty.
This patch adds a new global config option, vhost-iommu-support,
that controls enablement of the vhost IOMMU feature:
ovs-vsctl set Open_vSwitch . other_config:vhost-iommu-support=true
This value defaults to false; to enable IOMMU support, this field
should be set to true when setting other global parameters on init
(such as "dpdk-socket-mem", for example). Changing the value at
runtime is not supported, and requires restarting the vswitch daemon.
Signed-off-by: Mark Kavanagh <mark.b.kavanagh@intel.com>
Acked-by: Kevin Traynor <ktraynor@redhat.com>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>
With this commit, we allow the user to set other_config:dpdk-init=true
after the process is started. This makes it easier to start Open
vSwitch with DPDK using standard init scripts without restarting the
service.
This is still far from ideal, because initializing DPDK might still
abort the process (e.g. if there not enough memory), so the user must
check the status of the process after setting dpdk-init to true.
Nonetheless, I think this is an improvement, because it doesn't require
restarting the whole unit.
CC: Aaron Conole <aconole@redhat.com>
Signed-off-by: Daniele Di Proietto <diproiettod@vmware.com>
Acked-by: Aaron Conole <aconole@redhat.com>
There's a lot of code in netdev-dpdk which is not at all related to the
netdev interface, mostly the library initialization code.
This commit moves it to a new 'dpdk' module, to simplify 'netdev-dpdk'.
Also a new module 'dpdk-stub' is introduced to implement some functions
when DPDK is not available. This replaces the old 'netdev-nodpdk'
module.
Some redundant includes are removed or reorganized as a consequence.
No functional change.
CC: Aaron Conole <aconole@redhat.com>
Signed-off-by: Daniele Di Proietto <diproiettod@vmware.com>
Acked-by: Aaron Conole <aconole@redhat.com>
Tested-by: Aaron Conole <aconole@redhat.com>
