ether82567: determine phy number by probing phy id registers
link status not working on 82567 was due to wrong phy number
used. instead of hardcoding the phy numbers, probe the phys
by reading id1 and id2 registers (code stolen from ethermii).
on the 82567, reading any phy register just gives 0 back.
however, the card works just fine and no action is required
to (re-)start auto negotiation. so we add maclproc() which just
reads the speed setting and link status from the mac status
register instead of reading the phy registers.
we'v probably seen this symptom on other cards (link: 0) like
82566. we should test if we can make link status work on
these cards as well by just using the maclproc().
rx pool exhaustion causes the system to deadlock when netbooted.
queue management should (etheroq) already makes sure the systen
can keep up with the data thowing away buffers.
erik fixed this moving the wakeup() out of the ilock() in rbfree(),
but i think it is an error to try acquiering a ilock in sleeps wait
condition function in general.
so this is what we do:
in the icansleep() function, we check for the *real* event we care about;
that is, if theres a buffer available in the Rbpool. this is to handle
the case when rbfree() makes a buffer available *before* it sees us
setting p->starve = 1.
p->starve is now just used to gate rbfree() from calling wakeup() as
an optimization.
this might cause spurious wakeups but they are not a problem. missed
wakeups is the thing we have to prevent.
this patch consists of two bits of work submitted as one
patch.
the first bit fixed a "pacing" problem, where a tcp connection
rate-limited by the reading process would experience 10%
of the expected throughput, and could even get into live
lock. it was noticed at the time of this initial work that
the stack often sent tiny grams. some good bits from nix'
original tcp were merged in. the test program
/n/sources/contrib/quanstro/tcptest.c
will verify that under most conditions, a reader-paced connection
now gets the expected throughput. expected arguments
would be
tcptest -s1 -n 5000 -l
the second bit is a first step in preparing tcp to handle
modest (1-2MB) bandwidth-delay products. the strategy
was to completely implement NewReno. the testing network
was a 7/35/70ms by 100Mbit wan emulator with 0/.05/.1% loss.
here are the performance comparisons from the changes after
the first round "old" to the submitted patch "new". the
smallest improvement was 80%, the largest was 11x.
mothra: use pldraw() to put cmd box on screen for alt display
the cmd box is not part of the alt display hirarchy. for command
typing to show the box in alt display, we call pldraw() on it
in eresized() to initialize its cmd->b image so it knows where to
draw itself on typing.
add ricoh pci sdmmc host controller driver for X230
the driver should work for standard sdhc
(see http://www.sdcard.org/) controllers,
but matches for the ricoh controller only
as it was the only one i have for testing.
aml: preserve reference type when indexing into package to prevent implicit type conversion when storing to arg or local
if LocalX or ArgX is a package, the store into
a element should *not* type convert. so when taking
the index reference, we have to carry over the type.
mothra: handle empty attributes (for base-tag and others...)
empty href="" attribute in base-tag causes the page to break.
while at it, handle empty attributes in other parts of the
code as well. (mostly stuff like id, name shouldnt be empty)
it could happen that we unblanked while vesaproc was
currently blanking (when manually blanking using vgactl
for example). the wakeup of the unblank is lost.
Volume Space Size (BP 81 to 88)
This field shall specify as a 32-bit number the number of Logical Blocks
in which the Volume Space of the volume is recorded.
This field shall be recorded according to 7.3.3.
cinap_lenrek [Tue, 25 Jun 2013 18:32:43 +0000 (20:32 +0200)]
reintroduce *notsc= option
the issues with the previous tsc change where not related to the tsc
but where problems with timesync using an old frequency file. a
patch to fix timesync was commited, so so we reintroduce the *notsc=
again.
cinap_lenrek [Tue, 25 Jun 2013 18:28:51 +0000 (20:28 +0200)]
timesync: reduce the frequency tolerance from half to double the system clock
the frequency tolerance used by timesync was from a 10th to 10 times
the frequency of the system clock! switching a system from tsc to pic
timer changes the system clock frequency from 300MHz to arround 1.8Ghz
on a x200s laptop resulting in time running way too slow or way too fast.
so we change timesync to only accept frequencies from half to double the
system clock which still seems huge, but at least catches the case above
resulting in timesync ignoring the old frequency file.
cinap_lenrek [Mon, 24 Jun 2013 20:47:07 +0000 (22:47 +0200)]
wifi: signal ap deassociation to aux/wpa with a zero length read.
aux/wpa needs to reset its reply counter on deassociation to
properly restart key negotiation. we signal this with a zero
length read on the connections filtering for eapol protocol.
cinap_lenrek [Sun, 23 Jun 2013 05:14:52 +0000 (07:14 +0200)]
wifi: fix missed eapol frames
allow the driver to associate the node with a new aid right after
we receive the association response, not just when we transmit
a packet which usualy does not happen as eapol is initiated by
the access point so there are no transmit calls. we just call
transmit from the wifiproc with a nil block to introduce the node.
projects / plan9front.git / log