With availability of switchdev model in linux, it is possible to capture
stats for SR-IOV device with interface_type as 'hostdev' provided device
supports VF represontor in switchdev mode on host.

These stats are supported by adding helper APIs for getting/verifying VF
representor name based on PCI Bus:Device:Function information in domains
'hostdev' structure and querying required net sysfs directory and file
entries on host according to switchdev model. These helper APIs are then
used in qemu/conf to get the interface stats for VF representor of
pci SR-IOV device.

V4 includes changes based on feedback received for v3 patchset. Added new
generic API for linux is added to fetch stats from /proc/net/dev which 
will be used by tap and hostdev devices. Also introduced new API to retrieve
net def from given domain based on the given hostdev which supports network.

[1] https://www.kernel.org/doc/Documentation/networking/switchdev.txt
V3: https://www.redhat.com/archives/libvir-list/2018-April/msg00306.html

Jai Singh Rana (6):
  util: Add helper function to clean extra spaces in string
  util: Add generic API to fetch network stats from procfs
  util: Add helper APIs to get/verify VF Representor name
  conf: util: Add API to find net def given its domain's hostdev
  qemu: Network stats support for VF Representor
  docs: Update news about Network stats support for VF Representor

 docs/news.xml               |   9 ++
 po/POTFILES                 |   1 +
 src/conf/domain_conf.c      |  43 +++++++
 src/conf/domain_conf.h      |   2 +
 src/libvirt_private.syms    |  11 ++
 src/qemu/qemu_driver.c      |  34 ++++-
 src/util/Makefile.inc.am    |   2 +
 src/util/virhostdev.c       |   4 +-
 src/util/virhostdev.h       |  11 ++
 src/util/virnetdev.c        | 202 ++++++++++++++++++++++++++++-
 src/util/virnetdev.h        |   5 +
 src/util/virnetdevhostdev.c | 300 ++++++++++++++++++++++++++++++++++++++++++++
 src/util/virnetdevhostdev.h |  34 +++++
 src/util/virnetdevtap.c     |  71 +----------
 src/util/virstring.c        |  36 ++++++
 src/util/virstring.h        |   3 +
 16 files changed, 691 insertions(+), 77 deletions(-)
 create mode 100644 src/util/virnetdevhostdev.c
 create mode 100644 src/util/virnetdevhostdev.h

-- 
2.13.7

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