b295f06da4
libvirt can retrieve traffic stats for emulated interfaces that are backed by tap or macvtap devices, but this information wasn't available for hostdev interfaces (those that are implemented by assigning an SR-IOV VF device to a guest using vfio): #virsh domifstat instance --interface=52:54:00:2d:b2:35 error: Failed to get interface stats instance 52:54:00:2d:b2:35 error: internal error: Interface name not provided For some SR-IOV VF devices this information is available via the netlink VFINFO_LIST request/response, and that is what this patch uses to implement stats retrieval for VF. Not that this is dependent on support in the PF driver - for example, the Mellanox ConnectX-4 Lx (mlx5) driver reports usable stats, while Intel 82599 (ixgbe) and 82576 (igb) just report all stats as 0. (this is the same result as "ip -s link show"). Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Reviewed-by: Laine Stump <laine@redhat.com>
Libvirt API for virtualization
Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the website:
License
The libvirt C API is distributed under the terms of GNU Lesser General Public License, version 2.1 (or later). Some parts of the code that are not part of the C library may have the more restrictive GNU General Public License, version 2.0 (or later). See the files COPYING.LESSER and COPYING for full license terms & conditions.
Installation
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
The libvirt project has two primary mailing lists:
- libvirt-users@redhat.com (for user discussions)
- libvir-list@redhat.com (for development only)
Further details on contacting the project are available on the website: