Solarflare
Server
Adapter
User
Guide
Solarflare
Adapters
on
Windows
Issue
20
©
Solarflare
Communications
2017
195
pf
‐
count=<pf
count>
This
is
the
number
of
available
PCIe
PFs
per
physical
network
port.
This
setting
is
applied
to
all
ports
on
the
adapter.
Changes
to
this
setting
with
sfboot
require
a
cold
reboot
to
become
effective.
MAC
address
assignments
may
change
after
altering
this
setting.
msix
‐
limit=
8|16|32|64|128|256|512|1024
Specifies
the
maximum
number
of
MSI
‐
X
interrupts
that
each
PF
will
use.
The
default
is
32.
Note:
Using
the
incorrect
setting
can
impact
the
performance
of
the
adapter.
Contact
Solarflare
technical
support
before
changing
this
setting.
sriov=enabled|disabled
Enable
SR
‐
IOV
support
for
operating
systems
that
support
this.
Not
required
on
SFN7000
or
SFN8000
series
adapters.
vf
‐
count=<vf
count>
The
number
of
virtual
functions
(VF)
advertised
to
the
operating
system
for
each
Physical
Function
on
this
physical
network
port.
SFN7000
and
SFN8000
series
adapters
have
a
total
limit
of
2048
interrupts.
Earlier
adapters
support
a
total
limit
of
127
virtual
functions
per
port
and
a
total
of
1024
interrupts.
Depending
on
the
values
of
msix
‐
limit
and
vf
‐
msix
‐
limit,
some
of
these
virtual
functions
may
not
be
configured.
Enabling
all
127
VFs
per
port
with
more
than
one
MSI
‐
X
interrupt
per
VF
may
not
be
supported
by
the
host
BIOS
‐
in
which
case
you
may
get
127
VFs
on
one
port
and
none
on
others.
Contact
your
BIOS
vendor
or
reduce
the
VF
count.
The
sriov
parameter
is
implied
if
vf
‐
count
is
greater
than
zero.
Changes
to
this
setting
with
sfboot
require
a
cold
reboot
to
become
effective.
vf
‐
msix
‐
limit=
1|2|4|8|16|32|64|128|256
The
maximum
number
of
interrupts
a
virtual
function
may
use.
Table
47:
Sfboot
Per
‐
adapter
Parameters
Parameter
Description