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White Rabbit Switch - Software
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815916a1
Commit
815916a1
authored
Sep 03, 2014
by
Alessandro Rubini
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doc/wrs-todo: additions thanks to Greg's feedback
Signed-off-by:
Alessandro Rubini
<
rubini@gnudd.com
>
parent
fd0e9d05
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doc/wrs-todo.in
View file @
815916a1
...
...
@@ -35,7 +35,7 @@
@setchapternewpage off
@set update-month
August
2014
@set update-month
September
2014
@c the release name below is substituted at build time
@set release
__
RELEASE
_
GIT
_
ID
__
...
...
@@ -206,8 +206,9 @@ no change there would be needed if and when the counters change.
@item We should have SDB in the switch gateware, to simplify a number
of things and avoid explicit addresses in so many places.
@item the ``pstats'' counters should export a version (even before SDB
is used). Thus, the kernel driver will know what the counters are, and
@item The ``pstats'' counters should export a version (even before SDB
is used). (@b
{
Update
}
: it is there, it just not used yet -- thanks Greg).
Thus, the kernel driver will know what the counters are, and
we could run different gateware images with the same filesystem, because
the driver will support the various versions counter sets.
...
...
@@ -342,6 +343,24 @@ the code base stronger and more maintainable.
neighbors, and to advertise ourselves as a more ``complete'' PTP
implementation.
@item WR GrandMaster Switch should be holy provided it has an
external reference. Currently if we have a GrandMaster Switch and we
connect a Free-running Master to it's Slave port (wr0) then it becomes
Slave to the Free-running Master and jumps it's WR time. All the
mechanism is in place, this should be trivial to fix.
@item If Slave is in TRACK
_
PHASE state and a time jump occurs it doesn't
reset its servo. It stays in TRACK
_
PHASE forever with a huge offset.
That is something we've already observed in AD test system for
Jean-Claude when GrandMaster was unlocking from the reference GPS. Not
following the time jump will be also a problem if we power on in the
same time all switches in the chain with GrandMaster on the top. It
takes some time for GM to lock so the network would start as
free-running to the second switch in the chain, but once GM is
synchronized all slaves will stay in TRACK
_
PHASE with large offset to
GrandMaster.
@end itemize
@c ##########################################################################
...
...
@@ -356,7 +375,7 @@ for every switch-specific thing. (Actually, @t{wrs_} would be better,
as it doesn't look like ``software'' and we use wrs/wrn internally already,
but several tools use @t
{
wrsw
_}
as a prefix already.
We fixed the ``shower'' name -- (@t
{
shw
_
ver
}
: switch hardware version),
but more are there.
but more are there.
(@b
{
Update
}
: Greg says to use @t
{
wrs
_}
and do it soon).
@item A number of tools @t
{
mmap()
}
FPGA memory, but there is no
locking so it is (remotely) possible for tools to interfere and get
...
...
@@ -407,7 +426,8 @@ I must learn how to deal with read-write objects before trying to
extend our MIB.
@item There is no support yet for sending traps on WR events.
We'll likely won't to notify WR time jumps and lock/unlock events.
This is even more important thatn @i
{
set
}
, because we want to notify
WR time jumps and lock/unlock events.
@item We need to seriously audit the web interface, and verify
everything is hooked properly to the system. This relates to the
...
...
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