Solarflare
Server
Adapter
User
Guide
Solarflare
Adapters
on
Linux
Issue
20
©
Solarflare
Communications
2017
90
The
following
global
parameters
in
are
used
to
control
the
configurable
parameters
for
the
Boot
ROM
driver
when
running
prior
to
the
operating
system
booting.
Table
19:
Sfboot
Global
Parameters
Parameter
Description
boot
‐
image=
all|optionrom|uefi|disabled
Specifies
which
boot
firmware
images
are
served
‐
up
to
the
BIOS
during
start
‐
up.
This
parameter
can
not
be
used
if
the
‐‐
adapter
option
has
been
specified.
This
is
a
global
option
and
applies
to
all
ports
on
the
NIC.
port
‐
mode=
default|1x10G|2x10G|4x10G|
2x40G
Configure
the
port
mode
to
use.
This
is
for
SFN7000
and
SFN8000
series
adapters
only.
The
values
specify
the
connectors
available
after
using
any
splitter
cables.
The
usable
values
are
adapter
‐
dependent:
•
SFN8722:
2x10G
•
SFN8x42:
4x10G,
2x40G
(default)
•
SFN8522[M]:
2x10G
(default)
•
SFN7
xx
4F:
2x10G,
4x10G
(default)
•
SFN7
xx
2Q:
2x10G,
4x10G,
2x40G
(default)
•
SFN7
xx
2F:
1x10G,
2x10G
(default)
Changes
to
this
setting
with
sfboot
require
a
cold
reboot
to
become
effective.
MAC
address
assignments
may
change
after
altering
this
setting.
firmware
‐
variant=
full
‐
feature|ultra
‐
low
‐
latency|
capture
‐
packed
‐
stream|auto
Configure
the
firmware
variant
to
use.
This
is
for
SFN7000
and
SFN8000
series
adapters
only:
•
the
SFN7002F
adapter
is
factory
set
to
full
‐
feature
•
all
other
adapters
are
factory
set
to
auto.
Default
value
=
auto
‐
means
the
driver
will
select
a
variant
that
meets
its
needs:
•
the
VMware
driver
always
uses
full
‐
feature
•
otherwise,
ultra
‐
low
‐
latency
is
used.
The
ultra
‐
low
‐
latency
variant
produces
best
latency
without
support
for
TX
VLAN
insertion
or
RX
VLAN
stripping
(not
currently
used
features).
It
is
recommended
that
Onload
customers
use
the
ultra
‐
low
‐
latency
variant.
This
is
a
global
option
and
applies
to
all
ports
on
the
NIC.