
Solarflare
Server
Adapter
User
Guide
SR
‐
IOV
Virtualization
Using
KVM
Issue
20
©
Solarflare
Communications
2017
331
7.2
SR
‐
IOV
In
the
simplest
of
SR
‐
IOV
supported
configurations
each
physical
port
is
exposed
as
a
single
PF
(adapter
default)
and
up
to
240
VFs.
The
Solarflare
net
driver
(sfc.ko)
will
detect
that
PF/VFs
are
present
from
the
sfboot
configuration
and
automatically
configure
the
virtual
adapters
and
virtual
ports
as
required.
Adapter
firmware
will
also
configure
the
firmware
switching
functions
allowing
packets
to
pass
between
PF
and
VFs
or
from
VF
to
VF.
Figure
49:
SR
‐
IOV
‐
Single
PF,
Multiple
VFs
vf
‐
msix
‐
limit=<n>
8
Number
of
MSI
‐
X
interrupts
per
VF.
The
adapter
supports
a
maximum
2048
interrupts.
The
specified
value
for
a
PF
must
be
a
power
of
2.
insecure_filters=
<enabled|disabled>
disabled
When
enabled,
a
function
(PF
or
VF)
can
insert
filters
not
qualified
by
its
own
permanent
MAC
address.
Table
82:
sfboot
‐
SR
‐
IOV
options
Option
Default
Value
Description