adrian [Mon, 17 Sep 2012 01:21:55 +0000 (01:21 +0000)]
Add a per-TID filter queue and filter state bits.
These are intended for software TX filtering support, where the NIC
decides there has been too many successive failues to a destination
and will filter it.
Although the filtering is done per-destination (via the keycache),
the state and queue is kept per-TID for now. It simplifies the overall
architecture design and locking.
adrian [Mon, 17 Sep 2012 01:09:17 +0000 (01:09 +0000)]
Improve performance of the Sample rate algorithm on 802.11n networks.
* Don't treat high percentage failures as "sucessive failures" - high
MCS rates are very picky and will quite happily "fade" from low
to high failure % and back again within a few seconds. If they really
don't work, the aggregate will just plain fail.
* Only sample MCS rates +/- 3 from the current MCS. Sample will back off
quite quickly, so there's no need to sample _all_ MCS rates between
a high MCS rate and MCS0; there may be a lot of them.
* Modify the smoothing rate to be 75% rather than 95% - it's more adaptive
but it comes with a cost of being slightly less stable at times.
A per-node, hysterisis behaviour would be nicer.
Remove references to userstat(1) and jailstat(1). Those tools were never
merged from the Perforce branch. They might be brought in when %CPU limits
go into the tree.
fix the kernel files to match our standard "option<space><tab>" format
such that when commenting/uncommentting lines, horizontal spacing is
maintained...
Also fix some minor comment formatting to line things up, etc...
Handle AT_TIMEKEEP in procstat(1) -x [1]. Remove the AT_COUNT switch
case, since AT_COUNT is not an aux vector, it is the counter of total
number of defined vectors.
isci(4): Fix SCSI/ATA translation for SCSI_WRITE_BUFFER w/ mode==0x7
(download microcode with offsets, save, and activate).
SATI translation layer was incorrectly using allocation length instead
of blocks, and was constructing the ATA command incorrectly.
Also change #define to specify that the 512 block size here is
specific for DOWNLOAD_MICROCODE, and does not relate to the device's
logical block size.
Submitted by: scottl (with small modifications)
MFC after: 3 days
MSI are implemented via Inbound Shared Doorbell 1 interrupts. Interrupts
are triggered by writing to Software Triggered Interrupt registeri (PCIe
card using physical address of this register in BAR0 space). There are 32
interrupts available. It can be increased by using Doorbell 2 and
Doorbell 3 registers to 96 interrupts.
MSI are implemented via software interrupt. PCIe cards will write
into software interrupt register which will cause inbound shared
interrupt which will be interpreted as a MSI.
- Add functions to calculate clocks instead using hardcoded values
- Update reset and timers functions
- Update number of interrupts
- Change name of platform from db88f78100 to db78460
- Correct DRAM size and PCI IRQ routing in dts file.
DWC OTG improvements. Implement full support for SPLIT transactions, in other
words FULL/LOW speed devices through HIGH speed HUBs. Improve support for
suspend and resume in host mode.
Do not change owner, group, or mode when package database directory and
its contents are created with pkg_add(1). It may happen when the packing
list contains @owner, @group, or @mode.
Reported by: Donald Bostrom (dbostrom at niksun dot com)
Reviewed by: portmgr (bapt)
Remove all the checks on curthread != NULL with the exception of some MD
trap checks (eg. printtrap()).
Generally this check is not needed anymore, as there is not a legitimate
case where curthread != NULL, after pcpu 0 area has been properly
initialized.
- Denote PCI-e endpoints that support FLR.
- Make parsing of PCI-e extended capabilities assume that future version
numbers are backwards compatible.
- Add new AER error descriptions.
- Add descriptions for more PCI-e extended capabilities.
- Add some registers defined in PCI 3.0 including new AER bits.
- Add constants for the rest of the fields in the PCI-express device
capability and control registers.
- Tweak some of the recently added PCI-e capability constants (always
use hex for offsets in config space, and include a shortened
version of the relevant register in the name of field constants).
adrian [Thu, 13 Sep 2012 18:24:13 +0000 (18:24 +0000)]
Don't use AR_PHY_MODE to setup half/quarter rate.
I'm not sure where in the deep, distant past I found the AR_PHY_MODE
registers for half/quarter rate mode, but unfortunately that doesn't
seem to work "right" for non-AR9280 chips.
Specifically:
* don't touch AR_PHY_MODE
* set the PLL bits when configuring half/quarter rate
I've verified this on the AR9280 (5ghz fast clock) and the AR5416.
The AR9280 works in both half/quarter rate; the AR5416 unfortunately
only currently works at half rate. It fails to calibrate on quarter rate.
Introduce a new make variable COMPILER_TYPE that specifies what
type of compiler is being used (currently clang or gcc). COMPILER_TYPE
is set in the new bsd.compiler.mk file based on the value of the CC
variable or, should it prove informative, by running ${CC} --version
and examining the output.
To avoid negative performance impacts in the default case and correct
value for COMPILER_TYPE type is determined and passed in the environment
of submake instances while building world.
Replace adhoc attempts at determining the compiler type by examining
CC or MK_CLANG_IS_CC with checks of COMPILER_TYPE. This eliminates
bootstrapping complications when first setting WITH_CLANG_IS_CC.
Sponsored by: DARPA, AFRL
Reviewed by: Yamaya Takashi <yamayan@kbh.biglobe.ne.jp>, imp, linimon
(with some modifications post review)
MFC after: 2 weeks
Ignore stop and continue signals sent to an exiting process. Stop signals
set p_xstat to the signal that triggered the stop, but p_xstat is also
used to hold the exit status of an exiting process. Without this change,
a stop signal that arrived after a process was marked P_WEXIT but before
it was marked a zombie would overwrite the exit status with the stop signal
number.
Add global and per-module sysctls/tunables to enable/disable metadata taste.
That should help to handle some cases when disk has some RAID metadata that
should be ignored, especially during boot.
The deadfs VOPs for vop_ioctl and vop_bmap call itself recursively,
which is an elaborate way to cause kernel panic. Change the VOPs
implementation to return EBADF for a reclaimed vnode.
While the calls to vop_bmap should not reach deadfs, it is indeed
possible for vop_ioctl, because the VOP locking protocol is to pass
the vnode to VOP unlocked. The actual panic was observed when ioctl
was called on procfs filedescriptor which pointed to an exited
process.
- Pacific/Fiji will go into DST from 21 October 2012 till 20 January 2013.
- Fix offset for Pacific/Tokelau.
- Gaza and West Bank had DST from 29 March to 28 September 2012.
- Syria has DST from April till October
- Morocco had DST from April to September 2012 except for 20 July to 20 August.
- Cuba changed to DST from 1 April 2012 only.
- Haiti has DST between 8 March and 1 November in 2012.
ed [Thu, 13 Sep 2012 08:13:01 +0000 (08:13 +0000)]
Rename __member2struct() to __containerof().
Compared to __member2struct(), this macro has the following advantages:
- It ensures that the type of the pointer is compatible with the member
field of the structure (or a void pointer).
- It works properly in combination with volatile and const, though
unfortunately it drops these qualifiers from the returned value.
mdf@ proposed to add the container_of() macro, just like Linux has.
Eventually I decided against this, as <sys/param.h> is included all over
the place. It seems container_of() on Linux is specific to the kernel,
not userspace. I'd rather not pollute userspace with this.
I also thought about adding __container_of(), but this would have two
advantages. Xorg seems to already have a __container_of(), which is not
compatible with this version. Also, the underscore in the middle
conflicts with our existing macros (__offsetof, __rangeof, etc).
I'm changing member2struct() to use its old code, as the extra
strictness of this new macro conflicts with existing code (read: cxgb).
adrian [Thu, 13 Sep 2012 07:24:14 +0000 (07:24 +0000)]
Flip on half/quarter rate support.
No, this isn't HT/5 and HT/10 support. This is the 11a half/quarter
rate support primarily used by the 4.9GHz and GSM band regulatory
domains.
This is definitely a work in progress.
TODO:
* everything in the last commit;
* lots more interoperability testing with the AR5212 half/quarter rate
support for the relevant chips;
* Do some interop testing on half/quarter rate support between _all_
the 11n chips - AR5416, AR9160, AR9280 (and AR9285/AR9287 when 2GHz
half/quarter rate support is coded up.)
adrian [Thu, 13 Sep 2012 07:22:40 +0000 (07:22 +0000)]
Introduce an AR5416 flavour of the IFS and mac usec/timing configuration
used when running the chips in half/quarter rate.
This sets up some default parameters which are then overridden by the
driver (which manually configures things like slot timing at interface
start time.)
Although this is a copy-and-modify from the AR5212 HAL, I did peek
at the reference HAL and the ath9k driver to see what they did.
Ath9k in particular doesn't hard-code this - instead, their version
of ar5416InitUserSettings() does all of the relevant math.
TODO:
* do the math, not hard code things!
* fix the mac clock calculation for the AR9287; since it runs the
MAC clock at a higher rate, requiring all the duration calculations
to change;
* Do a whole lot more validation for half/quarter rates.
adrian [Thu, 13 Sep 2012 07:19:53 +0000 (07:19 +0000)]
Call the ar5212SetCoverageClass() function for now.
Some of the math is a little wrong thanks to clocks in 11a mode running
at 44MHz when in fast clock mode (rather than 40MHz, which the chips
before AR9280 ran 11a in). That'll have to be addressed in a future commit.
ed [Wed, 12 Sep 2012 22:54:11 +0000 (22:54 +0000)]
Correctness: use __member2struct() on the correct fields.
The prev-pointers point to the next-pointers of the previous element --
not the ENTRY structure. The next-pointers are stored in the ENTRY
structures first, so the code would already work correctly. Still, it is
more accurate to use the next-fields.
To prevent misuse of __member2struct() in the future, I've got a patch
that requires the pointer to be passed to this macro to be compatible
with the member of the structure. I'll commit this patch after I've
tested it properly.
Idle threads are not allowed to acquire any lock but spinlocks.
Deny any attempt to do so by panicing at the locking operation
when INVARIANTS is on. Then, remove the check on blocking on a
turnstile.
The check in sleepqueues is left because they are not allowed to use
tsleep() either which could happen still.
ed [Wed, 12 Sep 2012 21:03:48 +0000 (21:03 +0000)]
Implement LIST_PREV().
Regular LISTs have been implemented in such a way that the prev-pointer
does not point to the previous element, but to the next-pointer stored
in the previous element. This is done to simplify LIST_REMOVE(). This
macro can be implemented without knowing the address of the list head.
Unfortunately this makes it harder to implement LIST_PREV(), which is
why this macro was never here. Still, it is possible to implement this
macro. If the prev-pointer points to the list head, we return NULL.
Otherwise we simply subtract the offset of the prev-pointer within the
structure.
It's not as efficient as traversing forward of course, but in practice
it shouldn't be that bad. In almost all use cases, people will want to
compare the value returned by LIST_PREV() against NULL, so an optimizing
compiler will not emit code that does more branching than TAILQs.
While there, make the code a bit more readable by introducing
__member2struct(). This makes STAILQ_LAST() far more readable.
Make pxe device in lsdev really include device name, looking like this:
pxe0: 192.168.3.1:/storage/nfsroot/amd64
, instead of confusing and less useful:
192.168.3.1:pxeboot
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