Commit Graph

86456 Commits

Author SHA1 Message Date
Michael Tuexen
ed72abc07d Whitespace changes.
MFC after: 3 days
2012-04-28 16:32:49 +00:00
Nathan Whitehorn
284ea61312 Fix build on 32-bit systems. 2012-04-28 14:42:49 +00:00
Adrian Chadd
af5336e30b Extend the ANI code to implement basic channel survey support.
* Always call ar5416GetListenTime()
* Modify ar5416GetListenTime() to:
  + don't update the ANI state if there isn't any ANI state;
  + don't update the channel survey state if there's no active
    channel - just to be paranoid
  + copy the channel survey results into the current sample slot
    based on the current channel; then increment the sample counter
    and sample history counter.
* Modify ar5416GetMIBCyclesPct() to simply return a HAL_SURVEY_SAMPLE,
  rather than a set of percentages.  The ANI code wasn't using the
  percentages anyway.

TODO:

* Create a new function which fetches the survey results periodically
* .. then modify the ANI code to use the pre-fetched values rather than
  fetching them again
* Roll the 11n ext busy function from ar5416_misc.c to update all the
  counters, then do the result calculation
* .. then, modify the MIB counter routine to correctly fetch a snapshot -
  freeze the counters, fetch the values, then reset the counters.
2012-04-28 08:29:46 +00:00
Adrian Chadd
9dc50580ff Fetch the channel survey code from the HAL.
This information is currently not being populated by any of the HAL
modules.
2012-04-28 08:15:40 +00:00
Adrian Chadd
f452e9d26e Extend the HAL channel survey statistics:
* include ext_chan_busy;
* include ofdm/cck phy error counts, which aren't yet implemented.
2012-04-28 08:12:51 +00:00
Adrian Chadd
9406c902cd Add a comment about this DELAY(), I'm not sure whether it's supposed
to be for a DDR/FIFO flush or something else.
2012-04-28 05:00:47 +00:00
Adrian Chadd
aaaca7e743 Add an AR5416 PCU DMA stop method, as a check for the AR9130 is needed.
The reference driver has a 3ms delay for the AR9130 but I'm not as yet
sure why.  From what I can gather, it's likely waiting for some FIFO
flush to occur.

At some point in the future it may be worthwhile adding a WMAC
FIFO flush here, but that'd require some side-call through to the SoC
DDR flush routines.

Obtained from:	Atheros
2012-04-28 03:07:36 +00:00
Nathan Whitehorn
50e13823c8 After switching mutexes to use lwsync, they no longer provide sufficient
guarantees on acquire for the tlbie mutex. Conversely, the TLB invalidation
sequence provides guarantees that do not need to be redundantly applied on
release. Roll a small custom lock that is just right. Simultaneously,
convert the SLB tree changes back to lwsync, as changing them to sync
was a misdiagnosis of the tlbie barrier problem this commit actually fixes.
2012-04-28 00:12:23 +00:00
Robert Millan
74269bb439 Increase DFLDSIZ from 128 MiB to 32 GiB. On amd64 there's plenty of virtual
memory available, so there is no need to be so conservative about it.

Reviewed by:	arch
2012-04-27 22:27:21 +00:00
Rick Macklem
4964d80705 It was reported via email that some non-FreeBSD NFS servers
do not include file attributes in the reply to an NFS create RPC
under certain circumstances.
This resulted in a vnode of type VNON that was not usable.
This patch adds an NFS getattr RPC to nfs_create() for this case,
to fix the problem. It was tested by the person that reported
the problem and confirmed to fix this case for their server.

Tested by:	Steven Haber (steven.haber at isilon.com)
MFC after:	2 weeks
2012-04-27 22:23:06 +00:00
Rick Macklem
a607cc6d8e Fix a leak of namei lookup path buffers that occurs when a
ZFS volume is exported via the new NFS server. The leak occurred
because the new NFS server code didn't handle the case where
a file system sets the SAVENAME flag in its VOP_LOOKUP() and
ZFS does this for the DELETE case.

Tested by:	Oliver Brandmueller (ob at gruft.de), hrs
PR:		kern/167266
MFC after:	1 month
2012-04-27 20:23:24 +00:00
Michael Tuexen
9a2e24aa4b Remove unused structure.
Reported by Irene Ruengeler.

MFC after: 3 days
2012-04-27 13:58:09 +00:00
Alexander Motin
7b2a8d7823 Fix RAID5 level names changed at r234603. 2012-04-27 08:49:15 +00:00
Adrian Chadd
39da9d42bd Remove some of the redundant locking done in the TX completion path,
when checking whether BAR frames need to be checked.
2012-04-26 23:57:24 +00:00
Attilio Rao
70dbd1604c Clean up the intr* MD KPI from the SMP dependency, removing a cause of
discrepancy between modules and kernel, but deal with SMP differences
within the functions themselves.

As an added bonus this also helps in terms of code readability.

Requested by:	gibbs
Reviewed by:	jhb, marius
MFC after:	1 week
2012-04-26 20:24:25 +00:00
Michael Tuexen
78f2804527 Fix a type in an SCTP AUTH related notification. Keep the old name
for backwards compatibility.
Spotted by Irene Ruengeler.

MFC after: 3 days
2012-04-26 11:07:15 +00:00
Adrian Chadd
8df7248cf3 Add the BT register definitions for AR9285/AR9287 BT coexistence.
Obtained from:	Linux ath9k
2012-04-26 02:03:16 +00:00
Ryan Stone
c6024848dd Implement the D "cpu" variable, which returns curcpu. I have chosen not
to follow the example of OpenSolaris and its descendants, which implemented
cpu as an inline that took a value out of curthread.  At certain points in
the FreeBSD scheduler curthread->td_oncpu will no longer be valid (in
particukar, just before the thread gets descheduled) so instead I have
implemented this as its own built-in variable.

Sponsored by:	Sandvine Inc.
MFC after:	1 week
2012-04-26 01:07:03 +00:00
Stanislav Sedov
fd083a492d - Disable MMU before reconfiguring the pagetables in the trampoline code.
Otherwise we might end up overwriting the PTEs we're currently using
  for some reason.

Reviewed by:	cognet
2012-04-25 22:44:07 +00:00
Pyun YongHyeon
fca56fb2c3 For Yukon II controllers that implement optional temperature sensor
and voltage sensor, TWSI is used to get sensor data.  msk(4) does
not monitor these sensors and interrupt for TWSI completion is
disabled by default.
However, due to unknown reason, the TWSI completion interrupt fires
and it resulted in interrupt storm.  To fix it, acknowledges the
TWSI completion interrupt if driver see the event.  Given that not
all Yukon II controllers show the issue it could be a silicon bug
which does not honor interrupt masking.

Probably the right way to address the issue is disabling automatic
TWSI cycle initiation against these sensors.  It would be even
better to implement reading voltage/temperature from the NIC but it
requires access to National LM80 through TWSI and documentation to
do that is not available yet(probably will never happen).

Reported by:	jhb
Tested by:	jhb
MFC after:	2 weeks
2012-04-25 02:46:13 +00:00
Ed Maste
a3d2552747 Fix cut-and-paste comment error
Submitted by:	sbruno
2012-04-25 02:05:14 +00:00
Adrian Chadd
f13112ff78 Add placeholder methods for WMI command access (USB, perhaps SDIO later)
which will be needed for AR7010 and AR9287 USB access.

The names differ slightly from Linux and Atheros, for the sake of
consistency.

A lot more work is required in order to convert the 11n HAL support to
fully support USB.
2012-04-25 01:42:22 +00:00
Adrian Chadd
36e9589ef3 Add a note that explains what the current state of the register byte order
macros are.
2012-04-25 01:24:39 +00:00
Nathan Whitehorn
de63b4d2d5 Switch the default I/O memory barrier to eieio, as it should be. This
does not appear to cause any problems due to fixes elsewhere.

MFC after:	2 months
2012-04-24 13:37:43 +00:00
Nathan Whitehorn
8387bb0c78 Revert r234581 for this file. The lockless SLB tree code does in fact need
a heavyweight sync instead of a lightweight sync to function properly.
Thanks to mdf for the clarification.
2012-04-24 13:36:41 +00:00
Bjoern A. Zeeb
fca1e0abf3 Do not toggle IFCAP_TSO4 if we would also do TSO6. Given the driver does
not currently announce/support TSO6 that cannot happen. Clean it up anyway
for consistency.

Reviewed by:	yongari
MFC after:	1 week
2012-04-24 08:30:55 +00:00
Jung-uk Kim
eef1b955be Merge ACPICA 20120420. 2012-04-23 23:05:14 +00:00
Bjoern A. Zeeb
39fc714a6f If we pass down 64k - L2 hdr size + 1 to 64K L3+ data adding an ether
header will make the data go over the 64k limits announced to busdma as
maxsize and the transaction will fail.

With TSO this can result in a TCP regression due to the lost packet.

According to the data sheets ixgbe(4) 82598 and 82599 can handle up to
256k so increase the maximum.

Reported by:	Jon Kåre Hellan, UNINETT (jon.kare.hellan uninett.no)
Tested by:	Jon Kåre Hellan, UNINETT (jon.kare.hellan uninett.no)
MFC after:	1 week
2012-04-23 22:05:09 +00:00
Bjoern A. Zeeb
7a1421ee03 Do not announce IPv6 TSO support yet. The driver seems to make assumptions
based on IPv4 header parsing only.

MFC after:	1 week
2012-04-23 21:50:10 +00:00
Bjoern A. Zeeb
0e701bc14c Do not announce IPv6 TSO support yet. The in-tree driver does not seem
to fully handle this yet.

Reviewed by:	davidcs
MFC after:	1 week
2012-04-23 21:49:11 +00:00
Konstantin Belousov
b3bfb267cb Allow for the process information sysctls to accept a thread id in addition
to the process id.  It follows the ptrace(2) interface and allows debugging
libraries to use thread ids directly, without slow and verbose conversion
of thread id into pid.

The PGET_NOTID flag is provided to allow a specific sysctl to disallow
this behaviour.  All current callers of pget(9) have useful semantic to
operate on tid and do not need this flag.

Reviewed by:	jhb, trocini
MFC after:	1 week
2012-04-23 20:56:05 +00:00
Nathan Whitehorn
51a6f57e4a Fix copy-and-paste error in r230400.
MFC after: 3 days
2012-04-23 20:53:50 +00:00
Michael Tuexen
d77145777a Use the flags defined in RFC 6525 in the stream reset event. 2012-04-23 20:45:31 +00:00
Edward Tomasz Napierala
06c65b6b41 Remove unused thread argument from ufs_extattr_uepm_lock()/ufs_extattr_uepm_unlock(). 2012-04-23 17:56:35 +00:00
Edward Tomasz Napierala
05cc75de83 Fix build. 2012-04-23 17:54:49 +00:00
Alexander Motin
bafd0b5b0a Fix copy-paste typo in r234603.
Submitted by:	kan
2012-04-23 16:35:19 +00:00
Nathan Whitehorn
2a134f71d1 Fix missing header for powerpc_iomb().
Pointy hat to:	me
2012-04-23 15:47:07 +00:00
Edward Tomasz Napierala
26621e1f06 Remove unused thread argument from clear_inodeps() and clear_remove(). 2012-04-23 14:44:18 +00:00
Edward Tomasz Napierala
af6e6b87ad Remove unused thread argument to vrecycle().
Reviewed by:	kib
2012-04-23 14:10:34 +00:00
Edward Tomasz Napierala
c52fd858ae Remove unused thread argument from vtruncbuf().
Reviewed by:	kib
2012-04-23 13:21:28 +00:00
Alexander Motin
dbb2e75504 Add names for all primary RAID levels defined by DDF 2.0 specification. 2012-04-23 13:04:02 +00:00
Alexander Motin
e26083ca69 Add sos@ copyrights to RAID metadata modules, respecting his efforts in
decoding metadata formats in ataraid(4) code.
2012-04-23 09:39:39 +00:00
Fabien Thomas
5df02332df Fix class malloc init for mips and powerpc that was not converted
by r233628.

Found by: monthadar, adrian
MFC after:	1 week
2012-04-23 08:58:01 +00:00
Nathan Whitehorn
a4cbf436e7 Provide a clearer split between read/write and acquire/release barriers.
This should really, actually be correct now.
2012-04-22 22:27:35 +00:00
Nathan Whitehorn
14758466eb Correctly specify assembler constrains for synchronization instructions.
MFC after: 3 days
2012-04-22 21:55:19 +00:00
Nathan Whitehorn
a6349a998d Clarify what we are doing in r234583 a little better: eieio and isync do
not provide general barriers, but only barriers in the context of the
atomic sequences here. As such, make them private and keep the global
*mb() routines using a variant of sync.
2012-04-22 21:11:01 +00:00
Nathan Whitehorn
83ae3d5531 On non-64-bit systems (which generally don't have lwsync), use eieio and
isync to implement read and write barriers, following Appendix B.2 of
Book II of the architecture manual. This provides a 25% speed increase
to fork() on the PowerPC G4.
2012-04-22 20:23:34 +00:00
Nathan Whitehorn
6f26a88999 Use lwsync to provide memory barriers on systems that support it instead
of sync (lwsync is an alternate encoding of sync on systems that do not
support it, providing graceful fallback). This provides more than an order
of magnitude reduction in the time required to acquire or release a mutex.

MFC after:	2 months
2012-04-22 19:00:51 +00:00
Nathan Whitehorn
a1f8f44820 Remove dead code. The routines in atomic.S did not work properly anyway, and
were everywhere unused. If we turn out to need them, they should be
reimplemented.

MFC after:	2 weeks
2012-04-22 18:56:56 +00:00
Nathan Whitehorn
13d47f302f Replace eieio; sync for creating bus-space memory barriers with sync.
sync performs a strict superset of the functions of eieio, so using both
is redundant. While here, expand bus barriers to all bus_space operations,
since many drivers do not correctly use bus_space_barrier().

In principle, we can also replace sync just with eieio, for a significant
performance increase, but it remains to be seen whether any poorly-written
drivers currently depend on the side effects of sync to properly function.

MFC after:	1 week
2012-04-22 18:54:51 +00:00
Nathan Whitehorn
0b852c03eb Avoid a lock order reversal in pmap_extract_and_hold() from relocking
the page. This PMAP requires an additional lock besides the PMAP lock
in pmap_extract_and_hold(), which vm_page_pa_tryrelock() did not release.

Suggested by:	kib
MFC after:	4 days
2012-04-22 17:58:30 +00:00
Alexander V. Chernikov
3a0cd8db78 Fix panic in ng_patch(4) caused by checksum flags being added to mbuf flags.
Tested by:        Maxim Ignatenko <gelraen.ua@gmail.com>
Approved by:      kib(mentor)

MFC after:        3 days
2012-04-22 17:00:52 +00:00
Alexander V. Chernikov
c2508034a2 Do not require radix write lock to be held while dumping route table
via sysctl(4) interface. This permits router not to stop forwarding
packets while route table is being written to user-supplied buffer.

Reported by:        Pawel Tyll <ptyll@nitronet.pl>
Approved by:        kib(mentor)

MFC after:          1 week
2012-04-22 16:13:23 +00:00
Yoshihiro Takahashi
42f4a70cbb MFi386: revisions 234074 and 234105
- Adding the BSP as an interrupt target directly in cpu_startup().
2012-04-22 04:36:25 +00:00
Marius Strobl
15eddb68ee Interrupts must be disabled while handling a partial cache line flush,
as otherwise the interrupt handling code may modify data in the non-DMA
part of the cache line while we have it stashed away in the temporary
stack buffer, then we end up restoring a stale value.

PR:		160431
Submitted by:	Ian Lepore
MFC after:	1 week
2012-04-22 00:58:04 +00:00
Marius Strobl
f7f6865e6d - Add support for MCI1 revision 2xx controllers and a work-around for their
"Data Write Operation and number of bytes" erratum.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.
2012-04-22 00:43:32 +00:00
Konstantin Belousov
1472f4f4b9 When MAP_STACK mapping is created, the map entry is created only to
cover the initial stack size. For MCL_WIREFUTURE maps, the subsequent
call to vm_map_wire() to wire the whole stack region fails due to
VM_MAP_WIRE_NOHOLES flag.

Use the VM_MAP_WIRE_HOLESOK to only wire mapped part of the stack.

Reported and tested by:	Sushanth Rai <sushanth_rai yahoo com>
Reviewed by:	alc
MFC after:	1 week
2012-04-21 18:36:53 +00:00
Alan Cox
2aa163dc57 As documented in vm_page.h, updates to the vm_page's flags no longer
require the page queues lock.

MFC after:	1 week
2012-04-21 18:26:16 +00:00
Nathan Whitehorn
fbd21ea620 Organize some members of ucontext_t in the same order they are in the
trap frame. These are usually not used, and so this changes very little.

MFC after:	5 days
2012-04-21 14:39:47 +00:00
Kevin Lo
03167052c4 Add support for the SIMCom SIM5218, tested by me. 2012-04-21 14:30:51 +00:00
Dimitry Andric
fb94bf79b3 Fix the following clang warning in dpt(4):
sys/dev/dpt/dpt_scsi.c:612:18: error: implicit truncation from 'int' to bitfield changes value from -2 to 2 [-Werror,-Wconstant-conversion]
    dpt->cache_type = DPT_CACHE_WRITEBACK;
	      ^ ~~~~~~~~~~~~~~~~~~~

by defining DPT_CACHE_WRITEBACK as 2, since dpt_softc::cache_type is an
unsigned bitfield.  No binary change.

MFC after:	1 week
2012-04-21 14:23:46 +00:00
Michael Tuexen
07ee8fa69f Fix check used by stream reset related events.
MFC after: 3 days
2012-04-21 11:53:24 +00:00
Edward Tomasz Napierala
72b8ff1c74 Fix use-after-free introduced in r234036.
Reviewed by:	mckusick
Tested by:	pho
2012-04-21 10:45:46 +00:00
Adrian Chadd
1d0e8a50a0 Allow for MIPS devices to have a specific probe/attach order.
The default priority is now '1000' rather than '0'.  This may cause some
unforseen regressions.

Submitted by:	Stefan Bethke <stb@lassitu.de>
Reviewed by:	imp
2012-04-21 04:17:30 +00:00
Marius Strobl
7aa6584632 o Fixes:
- When switching to 4-bit operation, send a SET_CLR_CARD_DETECT command
    to disconnect the card-detect pull-up resistor from the DAT3 line before
    sending the SET_BUS_WIDTH command.
  - Add the missing "reserved" zero entry to the mantissa table used to
    decode various CSD fields. This was causing SD cards to report that they
    could run at 30 MHz instead of the maximum 25 MHz mandated in the spec.
o Enhancements:
  - At the MMC layer, format various info from the CID into a string that
    uniquely identifies the card instance (manufacturer number, serial
    number, product name and revision, etc). Export it as an instance
    variable.
  - At the MMCSD layer, display the formatted card ID string, and also
    report the clock speed of the hardware (not the card's max speed), and
    the number of bits and number of blocks per transfer. It comes out like
    this now:
    mmcsd0: 968MB <SD SD01G 8.0 SN 276886905 MFG 08/2008 by 3 SD> at mmc0
    22.5MHz/4bit/128-block
o Use DEVMETHOD_END.
o Use NULL instead of 0 for pointers.

PR:		156496
Submitted by:	Ian Lepore
MFC after:	1 week
2012-04-21 01:51:16 +00:00
Nathan Whitehorn
c13aac3896 Make sure all pending operations have completed on the existing thread
before (potentially) migrating it to a different CPU.

MFC after:	5 days
2012-04-20 23:01:36 +00:00
Adrian Chadd
15a353ce97 Allow for a default GPIO pin "high", which is required for some boards
which tie the USB device enable to a GPIO line.

Submitted by:	Stefan Bethke <stb@lassitu.de>
2012-04-20 22:44:00 +00:00
Adrian Chadd
866e643549 .. oops. 2012-04-20 22:07:21 +00:00
Adrian Chadd
c928fccc09 "Upgrade" the AR9285 code to support PCI/ART EEPROM on flash.
I've just verified that this boots on an Atheros AP91. I haven't verified
it with traffic though, so YMMV.
2012-04-20 21:56:13 +00:00
Dimitry Andric
a511762672 Fix the following compilation warnings in sys/contrib/rdma/rdma_cma.c:
sys/contrib/rdma/rdma_cma.c:1259:8: error: case value not in enumerated type 'enum iw_cm_event_status' [-Werror,-Wswitch]
	      case ECONNRESET:
		   ^
  @/sys/errno.h:118:20: note: expanded from macro 'ECONNRESET'
  #define ECONNRESET      54              /* Connection reset by peer */
		      ^
  sys/contrib/rdma/rdma_cma.c:1263:8: error: case value not in enumerated type 'enum iw_cm_event_status' [-Werror,-Wswitch]
	      case ETIMEDOUT:
		   ^
  @/sys/errno.h:124:19: note: expanded from macro 'ETIMEDOUT'
  #define ETIMEDOUT       60              /* Operation timed out */
		      ^
  sys/contrib/rdma/rdma_cma.c:1260:8: error: case value not in enumerated type 'enum iw_cm_event_status' [-Werror,-Wswitch]
	      case ECONNREFUSED:
		   ^
  @/sys/errno.h:125:22: note: expanded from macro 'ECONNREFUSED'
  #define ECONNREFUSED    61              /* Connection refused */
		      ^

This is because the switch uses iw_cm_event::status, which is an enum
iw_cm_event_status, while ECONNRESET, ETIMEDOUT and ECONNREFUSED are
just plain defines from errno.h.

It looks like there is only one use of any of the enumeration values of
iw_cm_event_status, in:

  sys/contrib/rdma/rdma_iwcm.c: 	if (iw_event->status == IW_CM_EVENT_STATUS_ACCEPTED) {

So messing around with the enum definitions to fix the warning seems too
disruptive; the simplest fix is to cast the argument of the switch to
int.

Reviewed by:	kmacy
MFC after:	1 week
2012-04-20 21:52:57 +00:00
Dimitry Andric
f4c19bd7e5 Fix the following compilation warnings in nxge(4):
sys/dev/nxge/if_nxge.c:1276:11: error: case value not in enumerated type 'xge_hal_event_e' (aka 'enum xge_hal_event_e') [-Werror,-Wswitch]
	      case XGE_LL_EVENT_TRY_XMIT_AGAIN:
		   ^
  sys/dev/nxge/if_nxge.c:1289:11: error: case value not in enumerated type 'xge_hal_event_e' (aka 'enum xge_hal_event_e') [-Werror,-Wswitch]
	      case XGE_LL_EVENT_DEVICE_RESETTING:
		   ^

This is because the switch uses xge_queue_item_t::event_type, which is
an enum xge_hal_event_e, while the XGE_LL_EVENT_xx values are of the
enum xge_event_e.

Since messing around with the enum definitions is too disruptive, the
simplest fix is to cast the argument of the switch to int.

Reviewed by:	gnn
MFC after:	1 week
2012-04-20 21:43:19 +00:00
Brooks Davis
e9acaa9ae4 Enable DTrace hooks in GENERIC.
Reviewed by:	gnn
Approved by:	core (jhb, imp)
Requested by:	a cast of thousands
MFC after:	3 days
2012-04-20 21:37:42 +00:00
Dimitry Andric
489b51d2e5 Replace homegrown list implementation in sys/dev/asr/asr.c with
STAILQ().  While here, fix another clang warning about a switch which
tests an enum type for a regular integer value.

Submitted by:	jhb
MFC after:	1 week
2012-04-20 21:17:33 +00:00
John Baldwin
ce4857d146 The amr(4) firmware contains a rather dubious "feature" where it
assumes for small buffers (< 64k) that the OS driver is actually using
a buffer rounded up to the next power of 2.  It also assumes that the
buffer is at least 4k in size.  Furthermore, there is at least one
known instance of megarc sending a request with a 12k buffer where the
firmware writes out a 24k-ish reply.

To workaround the data corruption triggered by this "feature", ensure
that buffers for user commands use a minimum size of 32k, and that
buffers between 32k and 64k use a 64k buffer.

PR:		kern/155658
Submitted by:	Andreas Longwitz  longwitz incore de
Reviewed by:	scottl
MFC after:	1 week
2012-04-20 20:27:31 +00:00
John Baldwin
88bf5036fc Include the associated wait channel message for context switch ktrace
records.  kdump supports both the old and new messages.

Submitted by:	Andrey Zonov  andrey zonov org
MFC after:	1 week
2012-04-20 15:32:36 +00:00
Marcel Moolenaar
e7babf043f Build a 32-bit EFI loader on amd64. This to match the rest of the
code that is used to construct a loader (e.g. libstand, ficl, etc).

There is such a thing as a 64-bit EFI application, but it's not
as standard as 32-bit is. Let's make the 32-bit functional (as in
we can load and actualy boot a kernel) before solving the 64-bit
loader problem.
2012-04-20 15:01:23 +00:00
Jaakko Heinonen
dd952f80bc The value of flags matching VNOVAL can't be supported. Return EOPNOTSUPP
from setfflags() in this case. This fixes the return value of
chflags(path, -1).

Discussed with:	bde
MFC after:	2 weeks
2012-04-20 10:08:30 +00:00
Andrew Thompson
2885c19ebd Move the interface media check to a taskqueue, some interfaces (usb) sleep
during SIOCGIFMEDIA and we were holding locks.
2012-04-20 10:06:28 +00:00
Andrew Thompson
7702d4013b Add linkstate to bridge(4), set the link to up when at least one underlying
interface is up, otherwise the link is down.

This, among other things, allows carp to work on a bridge.

Prodded by:	glebius
Tested by:	Alexander Lunev
2012-04-20 09:55:50 +00:00
Adrian Chadd
b50d8083ab Introduce the matching PCI ath(4) fixup code from ar71xx_pci into
ar724x_pci.c.

* Move out the code which populates the firmware into ar71xx_fixup.c
* Shuffle around the ar724x fixup code to match what the ar71xx fixup
  code does.

I've validated this on an AR7240 with AR9285 on-board NIC. It doesn't
yet load, as the AR9285 EEPROM code needs to be made "flash aware."

TODO:

* Validate that I haven't broken AR71xx
* Test AR9285/AR9287 onboard NICs, complete with EEPROM code changes
* Port over the needed BAR hacks for AR7240, AR7241 and AR7242 from
  Linux OpenWRT.  The current WAR has only been tested on the AR7240
  and I'm not sure the way the BAR register is treated is "right".
  The "fixup" method here is right when setting the BAR for local access -
  ie, the BAR address is either 0xffff (AR7240) or 0x1000ffff (AR7241/AR7242),
  but the ath9k-fixup.c code (Linux OpenWRT) does this when setting the
  initial "fixup" BAR.  It then restores the original BAR.
  I'll have to read the ar724x PCI bus glue to see what other special cases
  await.
2012-04-20 08:26:05 +00:00
Kirk McKusick
dca5e0ec50 This update uses the MNT_VNODE_FOREACH_ACTIVE interface that loops
over just the active vnodes associated with a mount point to replace
MNT_VNODE_FOREACH_ALL in the vfs_msync, ffs_sync_lazy, and qsync
routines.

The vfs_msync routine is run every 30 seconds for every writably
mounted filesystem. It ensures that any files mmap'ed from the
filesystem with modified pages have those pages queued to be
written back to the file from which they are mapped.

The ffs_lazy_sync and qsync routines are run every 30 seconds for
every writably mounted UFS/FFS filesystem. The ffs_lazy_sync routine
ensures that any files that have been accessed in the previous
30 seconds have had their access times queued for updating in the
filesystem. The qsync routine ensures that any files with modified
quotas have those quotas queued to be written back to their
associated quota file.

In a system configured with 250,000 vnodes, less than 1000 are
typically active at any point in time. Prior to this change all
250,000 vnodes would be locked and inspected twice every minute
by the syncer. For UFS/FFS filesystems they would be locked and
inspected six times every minute (twice by each of these three
routines since each of these routines does its own pass over the
vnodes associated with a mount point). With this change the syncer
now locks and inspects only the tiny set of vnodes that are active.

Reviewed by: kib
Tested by:   Peter Holm
MFC after:   2 weeks
2012-04-20 07:00:28 +00:00
Kirk McKusick
f257ebbb2e This change creates a new list of active vnodes associated with
a mount point. Active vnodes are those with a non-zero use or hold
count, e.g., those vnodes that are not on the free list. Note that
this list is in addition to the list of all the vnodes associated
with a mount point.

To avoid adding another set of linkage pointers to the vnode
structure, the active list uses the existing linkage pointers
used by the free list (previously named v_freelist, now renamed
v_actfreelist).

This update adds the MNT_VNODE_FOREACH_ACTIVE interface that loops
over just the active vnodes associated with a mount point (typically
less than 1% of the vnodes associated with the mount point).

Reviewed by: kib
Tested by:   Peter Holm
MFC after:   2 weeks
2012-04-20 06:50:44 +00:00
Xin LI
f1c05d0b46 Fix build. 2012-04-20 04:40:39 +00:00
Michael Tuexen
90eba9b693 Whitespace changes.
MFC after: 3 days
2012-04-19 15:30:15 +00:00
Michael Tuexen
74b2fab47a Use the same pattern for mbuf logging everywhere.
MFC after: 3 days
2012-04-19 13:11:17 +00:00
Michael Tuexen
953b6058cc Fix reported errno.
MFC after: 3 days
2012-04-19 12:47:18 +00:00
Michael Tuexen
921569e288 Fix a bug where we copy out more data from a mbuf chain that are
actually in it. This happens when SCTP receives an unknown chunk, which
requires the sending of an ERROR chunk, and there is no final padding but
the chunk is not 4-byte aligned.
Reported by yueting via rwatson@

MFC after: 3 days
2012-04-19 12:43:19 +00:00
Alexander Motin
fc1de96060 Add to GEOM RAID class module for reading non-degraded RAID5 volumes and
some environment to differentiate 4 possible RAID5 on-disk layouts.

Tested with Intel and AMD RAID BIOSes.

MFC after:	2 weeks
2012-04-19 12:30:12 +00:00
Adrian Chadd
a47f39da1f Stop using the hardware register value byte order swapping for now,
at least until I can root cause what's going on.

The only platform I've seen this on is the AR9220 when attached to
the AR71xx CPUs.  I get immediate PCIe bus errors and all subsequent
accesses cause further MIPS bus exceptions.  I don't have any other
big-endian platforms to test this on.

If I get a chance (or two), I'll try to whack this on a bus analyser
and see exactly what happens.

I'd rather leave this on, especially for slower, embedded platforms.
But the #ifdef hell is something I'm trying to avoid.
2012-04-19 03:26:21 +00:00
Kirk McKusick
16165feec4 Delete a no longer useful VNASSERT missed during changes in 234400.
Suggested by: kib
2012-04-18 19:34:20 +00:00
Kirk McKusick
60005d66ab Fix a memory leak of M_VNODE_MARKER introduced in 234386.
Found by:  Peter Holm
2012-04-18 19:30:22 +00:00
Marcel Moolenaar
1eaf8e042c Compensate for the replacement of uart_cpu_{amd64|i386}.c with
uart_cpu_x86.c

Pointy hat: marcel
2012-04-18 17:44:05 +00:00
Josh Paetzel
6578a63cc7 Unbreak tinderbox.
Fix FreeBSD paradigms in the upstream code.

PR:	bin/166933
Submitted by:	Garrett Cooper <yanegomi@gmail.com>
2012-04-18 16:47:57 +00:00
Jaakko Heinonen
fd1062ce4c Return EOPNOTSUPP rather than EPERM for the SF_SNAPSHOT flag because
tmpfs doesn't support snapshots.

Suggested by:	bde
2012-04-18 15:22:08 +00:00
Jaakko Heinonen
808dd116cb The part about exec atime no longer applies in the comment.
Pointed out by:	bde
2012-04-18 15:19:00 +00:00
Thomas Quinot
4815449e08 Fix typo in comment 2012-04-18 12:50:13 +00:00
Dmitry Morozovsky
b20e4de387 VMware environments are not unusual now. Add VMware partitions recognition
(both MBR for ESXi <= 4.1 and GPT for ESXi 5) to g_part.

Reviewed by:	ae
Approved by:	ae
MFC after:	2 weeks
2012-04-18 11:59:03 +00:00
Alexander Motin
63297dfd4a Some improvements to GEOM MULTIPATH:
- Implement "configure" command to allow switching operation mode of
running device on-fly without destroying and recreation.
 - Implement Active/Read mode as hybrid of Active/Active and Active/Passive.
In this mode all paths not marked FAIL may handle reads same time,
but unlike Active/Active only one path handles write requests at any
point in time. It allows to closer follow original write request order
if above layers need it for data consistency (not waiting for requisite
write completion before sending dependent write).
 - Hide duplicate messages about device status change.
 - Remove periodic thread wake up with 10Hz rate.

MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.
2012-04-18 09:42:14 +00:00
Alexander Motin
6f48792444 Alike to SCSI make adaclose() to not return error if device gone.
This fixes KASSERT panic inside GEOM if kernel built with INVARIANTS.

MFC after:	1 week
2012-04-18 08:55:26 +00:00
Andrew Thompson
ddf3201009 Remove KASSERTS, they do not add any value here since the pointer is about to
be derefernced anyway.
2012-04-18 01:39:14 +00:00
Kirk McKusick
73305eb826 Drop export of vdestroy() function from kern/vfs_subr.c as it is
used only as a helper function in that file. Replace sole call to
vbusy() with inline code in vholdl(). Replace sole calls to vfree()
and vdestroy() with inline code in vdropl().

The Clang compiler already inlines these functions, so they do not
show up in a kernel backtrace which is confusing. Also you cannot
set their frame in kgdb which means that it is impossible to view
their local variables. So, while the produced code is unchanged,
the debugging should be easier.

Discussed with: kib
MFC after:      2 weeks
2012-04-17 21:46:59 +00:00
Kirk McKusick
71469bb38f Replace the MNT_VNODE_FOREACH interface with MNT_VNODE_FOREACH_ALL.
The primary changes are that the user of the interface no longer
needs to manage the mount-mutex locking and that the vnode that
is returned has its mutex locked (thus avoiding the need to check
to see if its is DOOMED or other possible end of life senarios).

To minimize compatibility issues for third-party developers, the
old MNT_VNODE_FOREACH interface will remain available so that this
change can be MFC'ed to 9. Following the MFC to 9, MNT_VNODE_FOREACH
will be removed in head.

The reason for this update is to prepare for the addition of the
MNT_VNODE_FOREACH_ACTIVE interface that will loop over just the
active vnodes associated with a mount point (typically less than
1% of the vnodes associated with the mount point).

Reviewed by: kib
Tested by:   Peter Holm
MFC after:   2 weeks
2012-04-17 16:28:22 +00:00
Edward Tomasz Napierala
9e21ef395a Fix bug where NFSv4 ACL enforcement code wouldn't unconditionally
allow the owner to read and write ACL and file attributes when there
was no entry with subject matching the owner.  In other words,
'getfacl meh' shouldn't fail for the owner if the ACL looks like this:

# file: meh
# owner: trasz
# group: wheel
         user:root:------a-------:------:allow

Reported by:	kientzle
2012-04-17 14:54:00 +00:00
Edward Tomasz Napierala
0b18eb6d74 Stop treating system processes as special. This fixes panics
like the one triggered by this:

# kldload geom_vinum
# pwait `pgrep -S gv_worker` &
# kldunload geom_vinum

or this:

GEOM_JOURNAL: Shutting down geom gjournal 3464572051.
panic: destroying non-empty racct: 1 allocated for resource 6

which were tracked by jh@ to be caused by checking p->p_flag,
while it wasn't initialised yet.  Basically, during fork, the code
checked p_flag, concluded the process isn't marked as P_SYSTEM,
incremented the counter, and later on, when exiting, checked that
the process was marked as P_SYSTEM, and thus didn't decrement it.

Also, I believe there wasn't any good reason for checking P_SYSTEM
in the first place.

Tested by:	jh
2012-04-17 14:31:02 +00:00
Edward Tomasz Napierala
47f6635cc1 Fix panic, triggered like this: "int main() { thr_exit(); }"
Submitted by:	Mateusz Guzik
2012-04-17 13:44:40 +00:00
Edward Tomasz Napierala
786813aa1f Enforce upper bound on the input buffer length.
Reported by:	Mateusz Guzik
2012-04-17 13:28:14 +00:00
Edward Tomasz Napierala
48ef856766 Fix panic at boot with SD/MMC readers with no media present, introduced
at r234177.  Note that this is a temporary fix, until I come up with something
prettier.
2012-04-17 10:44:28 +00:00
Adrian Chadd
f846cf42ab Run the fatal proc as a proc, rather than where it currently is.
Otherwise the reset path will sleep, which it can't do in this context.
2012-04-17 06:02:41 +00:00
Adrian Chadd
baf94755c0 Fix the RX free list locking creation and destruction to be consistent
even in the face of errors.

If the RX descriptor list fails, the RX lock won't be initialised, but
then the DMA free path wil try freeing it.

This commit is brought to you by a working mwl(4).
2012-04-17 04:52:57 +00:00
Adrian Chadd
865a6f735d Add missing #include 2012-04-17 04:31:50 +00:00
Adrian Chadd
93f5997b8c Style(9) and white space fixes. 2012-04-17 01:34:49 +00:00
Adrian Chadd
3f08db2e79 Protect the PCI space registers behind a mutex.
Obtained from:	Linux/OpenWRT, Atheros
2012-04-17 01:22:59 +00:00
Peter Grehan
26b1d645e0 Add x2apic MSR definitions
Reviewed by:	jhb
Obtained from:	bhyve via Neel via NetApp
2012-04-17 00:54:38 +00:00
Jung-uk Kim
5cf2cbca3f Fix a Clang warning.
Submitted by:	arundel
2012-04-16 23:29:12 +00:00
Jung-uk Kim
17b27db088 Regen for r234359. 2012-04-16 23:17:29 +00:00
Jung-uk Kim
f69f4d8630 Correct an argument type of iopl syscall for Linuxulator. This also fixes
a warning from Clang, i. e., "args->level < 0 is always false".
2012-04-16 23:16:18 +00:00
Jung-uk Kim
13fa650c75 Regen for r234357. 2012-04-16 22:59:51 +00:00
Jung-uk Kim
db8eb180d9 Correct arguments of stat64, fstat64 and lstat64 syscalls for Linuxulator. 2012-04-16 22:58:28 +00:00
Dimitry Andric
6c63ec073e Bump __FreeBSD_version due to the import of a new clang 3.1 prerelease
snapshot.
2012-04-16 21:28:04 +00:00
Jung-uk Kim
28cc85fd09 Regen for r234352. 2012-04-16 21:24:23 +00:00
Jung-uk Kim
d69a426fce - Implement pipe2 syscall for Linuxulator. This syscall appeared in 2.6.27
but GNU libc used it without checking its kernel version, e. g., Fedora 10.
- Move pipe(2) implementation for Linuxulator from MD files to MI file,
sys/compat/linux/linux_file.c.  There is no MD code for this syscall at all.
- Correct an argument type for pipe() from l_ulong * to l_int *.  Probably
this was the source of MI/MD confusion.

Reviewed by:	emulation
2012-04-16 21:22:02 +00:00
Jung-uk Kim
67490d785a - When interrupt is not requested for VM86 call, make a fake exit point and
push the address onto stack as we do for INTn emulation.  This avoids stack
underflow when we encounter RETF instruction in VM86 mode.  Lack of this
exit point actually caused page fault in VM86 mode with VESA module when we
resume from suspend state[1].
- Remove unnecessary CLI and STI instructions from BIOS interrupt emulation.
INTn and IRET must be able to emulate the flag correctly.

Reported by:	gavin [1]
Tested by:	gavin (early revision)
MFC after:	3 days
2012-04-16 19:31:44 +00:00
Peter Grehan
57a7aaa71f Sync with Bryan Venteicher's virtio git repo:
d04e609bdd1973cc7d2e8b38b7dcfae057b0962d
	virtio_blk: Use correct temporary variable in vtblk_poll_request

Obtained from:	Bryan Venteicher  bryanv at daemoninthecloset dot org
2012-04-16 18:29:12 +00:00
Marius Strobl
05374275e5 Turn on PREEMPTION by default. After fixing several bugs over time, the
last show-stopper keeping PREEMPTION from being usable on sparc64 should
have been dealt with in r230662.
At least on 2-way systems, PREEMPTION causes a little bit of a degradation
in worldstone performance. However, FreeBSD seems to have started building
up regressions in !PREEMPTION cases so sparc64 better should not be an
oddball in this regard.

MFC after:	1 week
2012-04-16 18:29:07 +00:00
Jaakko Heinonen
587fdb536f Sync tmpfs_chflags() with the recent changes to UFS:
- Add a check for unsupported file flags.
- Return EPERM when an user without PRIV_VFS_SYSFLAGS privilege attempts
  to toggle SF_SETTABLE flags.
2012-04-16 18:10:34 +00:00
Jaakko Heinonen
c5ab5ce345 tmpfs: Allow update mounts only for certain options.
Since r230208 update mounts were allowed if the list of mount options
contained the "export" option. This is not correct as tmpfs doesn't
really support updating all options.

Reviewed by:	kevlo, trociny
2012-04-16 18:07:42 +00:00
Gleb Smirnoff
ef341ee1e3 When we receive an ICMP unreach need fragmentation datagram, we take
proposed MTU value from it and update the TCP host cache. Then
tcp_mss_update() is called on the corresponding tcpcb. It finds the
just allocated entry in the TCP host cache and updates MSS on the
tcpcb. And then we do a fast retransmit of what we have in the tcp
send buffer.

This sequence gets broken if the TCP host cache is exausted. In this
case allocation fails, and later called tcp_mss_update() finds nothing
in cache. The fast retransmit is done with not reduced MSS and is
immidiately replied by remote host with new ICMP datagrams and the
cycle repeats. This ping-pong can go up to wirespeed.

To fix this:
- tcp_mss_update() gets new parameter - mtuoffer, that is like
  offer, but needs to have min_protoh subtracted.
- tcp_mtudisc() as notification method renamed to tcp_mtudisc_notify().
- tcp_mtudisc() now accepts not a useless error argument, but proposed
  MTU value, that is passed to tcp_mss_update() as mtuoffer.

Reported by:	az
Reported by:	Andrey Zonov <andrey zonov.org>
Reviewed by:	andre (previous version of patch)
2012-04-16 13:49:03 +00:00
Marko Zec
5bc2249ff8 #include <net/vnet.h> is no longer needed here.
Spotted by:	Ed Maste
MFC after:	3 days.
2012-04-16 13:41:46 +00:00
Andriy Gapon
85d5a233bd zfsboot: honor -q if it's present in boot.config
Before r228267 the option was honored but the original content of
boot.config was not preserved.  I tried to fix that but missed the idea.
Now the proper way of doing things is taken from i386/boo2.
Also, a comment is added to explain this a little bit unobvious
behavior.

Inspired by:	jhb
MFC after:	5 days
2012-04-16 10:43:06 +00:00
Andriy Gapon
8b452ff57a intpm: add ATI IXP400 pci id
PR:		kern/136762
Submitted by:	Aurelien Mere <freebsd@amc-os.com>
Tested by:	Jens Link <jens.link@gmx.de>
MFC after:	5 days
2012-04-16 10:33:46 +00:00
Andrew Turner
0b898a9ef1 Replace the C implementation of __aeabi_read_tp with an assembly version.
This ensures we follow the ABI by preserving registers r1-r3.

Reviewed by:	jmallett, imp
2012-04-16 09:38:20 +00:00
Adrian Chadd
468d6f48b3 Add in the AP96 phy configuration from openwrt.
* arge0 doesn't (yet) work via the switch PHY ports; I'm not sure why.
* arge1 maps to the WAN port. That works.

TODO:

* The PLL register needs a different (non-default) value for Gigabit
  Ethernet.  The board setup code needs to be extended a bit to allow
  for non-default pll_1000 values - right now, those values come out
  of hard-coded values in the per-chip set_pll_ge() routines.

Obtained from:	Linux / OpenWRT
2012-04-15 22:59:56 +00:00
Adrian Chadd
5fdb2379cb The AR913x MII speed configuration matches the AR71xx MII configuration.
So share the code.

Don't do it for the AR724x - that has a completely different set of PLL
and MII configuration parameters.
2012-04-15 22:34:22 +00:00
Gleb Kurtsou
f8439900d6 Provide better description for vfs.tmpfs.memory_reserved sysctl.
Suggested by:	Anton Yuzhaninov <citrin@citrin.ru>
2012-04-15 21:59:28 +00:00
Adrian Chadd
2aa563dfeb Migrate the net80211 TX aggregation state to be from per-AC to per-TID.
TODO:

* Test mwl(4) more thoroughly!

Reviewed by:	bschmidt (for iwn)
2012-04-15 20:29:39 +00:00
Adrian Chadd
82d05362e6 Drop this down from 512 to 128 for now.
This may result in a bit of a throughput drop.  However, any throughput
drop at this point should be investigated and root caused, as it's likely
because TX scheduling (all the way down to how preemption, scheduler work,
etc) is happening in a sub-optimal fashion.

This also makes it much more likely to be reloadable on a live machine.
Allocating 5120 TX ath_buf entries via contigmalloc is very unlikely
after a few hours of using X/Chromium.
2012-04-15 19:54:22 +00:00
Bernhard Schmidt
5ea748f578 Use the M_AMPDU_MPDU flag to determine when to manually set the seqno and
use a BA queue.
2012-04-15 18:25:17 +00:00
Adrian Chadd
bf9abaa954 Fix the mask logic when reading PCI configuration space registers. 2012-04-15 02:38:01 +00:00
Adrian Chadd
b890549d41 Override some default values to work around various issues in the deep,
dirty and murky past.

* Override the default cache line size to be something reasonable if
  it's set to 0.  Some NICs initialise with '0' (eg embedded ones)
  and there are comments in the driver stating that various OSes (eg
  older Linux ones) would incorrectly program things and 0 out this
  register.

* Just default to overriding the latency timer.  Every other driver
  does this.

* Use a default cache line size of 32 bytes.  It should be "reasonable
  enough".

Obtained from:	Linux ath9k, Atheros
2012-04-15 00:04:23 +00:00
Davide Italiano
99006d44f8 Fix a typo.
Approved by:	gnn (mentor)
MFC after:	2 days
2012-04-14 23:59:58 +00:00
Davide Italiano
331805a5d3 Fix some style bugs introduced in a previous commit (r233045)
Reported by:	glebius, jmallet
Reviewed by:	jmallet
Approved by:	gnn (mentor)
MFC after:	2 days
2012-04-14 23:53:31 +00:00
Michael Tuexen
4dca0ef478 Send always HBs when in PF state.
MFC after: 1 week
X-MFC with: r234296
2012-04-14 21:01:44 +00:00
Michael Tuexen
ca7567c923 Bugfix: Don't send HBs on path which are not idle.
MFC after: 1 week
2012-04-14 20:22:01 +00:00
Marius Strobl
83a8745245 Generate an obviously missing STOP when having finished transmitting data.
This fixes communication with PCF8563.
2012-04-14 17:27:34 +00:00
Marius Strobl
de98dfa146 Add support for the Atmel SAM9XE familiy of microcontrollers, which
consist of a ARM926EJ-S processor core with up to 512 Kbytes of on-chip
flash. Tested with SAM9XE512.

This file was missed in r234291.
2012-04-14 17:17:55 +00:00
Marius Strobl
0f0819525b Add support for the Atmel SAM9XE familiy of microcontrollers, which
consist of a ARM926EJ-S processor core with up to 512 Kbytes of on-chip
flash. Tested with SAM9XE512.
2012-04-14 17:09:38 +00:00
Luigi Rizzo
b1123b0137 i prefer this fix for the -Wformat warning (just one cast,
all the other variables are already correct for %x).
My previous attempt put the cast in the wrong place.
2012-04-14 16:44:18 +00:00
Bjoern A. Zeeb
c2d2534beb Fix LINT builds after r234233; not sure why modules need DEBUG by default. 2012-04-14 13:40:39 +00:00
Bjoern A. Zeeb
92083c91d2 Make compile on 64bit somehow for now after a first try at r234242 on
maybe 32bit?
2012-04-14 13:39:39 +00:00
Marius Strobl
bef0709e64 - Try to bring these files closer to style(9).
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.
2012-04-14 11:29:32 +00:00
Marius Strobl
91849f349c Fix !DDB build after r234190. 2012-04-14 11:21:24 +00:00
Peter Grehan
b8a587074f Catch up with Bryan Venteicher's virtio git repo:
a8af6270bd96be6ccd86f70b60fa6512b710e4f0
      virtio_blk: Include function name in panic string

cbdb03a694b76c5253d7ae3a59b9995b9afbb67a
      virtio_balloon: Do the notify outside of the lock

      By the time we return from virtqueue_notify(), the descriptor
      will be in the used ring so we shouldn't have to sleep.

10ba392e60692529a5cbc1e9987e4064e0128447
      virtio: Use DEVMETHOD_END

80cbcc4d6552cac758be67f0c99c36f23ce62110
      virtqueue: Add support for VIRTIO_F_RING_EVENT_IDX

      This can be used to reduce the number of guest/host and
      host/guest interrupts by delaying the interrupt until a
      certain index value is reached.

      Actual use by the network driver will come along later.

8fc465969acc0c58477153e4c3530390db436c02
      virtqueue: Simplify virtqueue_nused()

      Since the values just wrap naturally at UINT16_MAX, we
      can just subtract the two values directly, rather than
      doing 2's complement math.

a8aa22f25959e2767d006cd621b69050e7ffb0ae
      virtio_blk: Remove debugging crud from 75dd732a

      There seems to be an issue with Qemu (or FreeBSD VirtIO) that sets
      the PCI register space for the device config to bogus values. This
      only seems to happen after unloading and reloading the module.

d404800661cb2a9769c033f8a50b2133934501aa
      virtio_blk: Use better variable name

75dd732a97743d96e7c63f7ced3c2169696dadd3
      virtio_blk: Partially revert 92ba40e65

      Just use the virtqueue to determine if any requests are
      still inflight.

06661ed66b7a9efaea240f99f414c368f1bbcdc7
      virtio_blk: error if allowed too few segments

      Should never happen unless the host provides use with a
      bogus seg_max value.

4b33e5085bc87a818433d7e664a0a2c8f56a1a89
      virtio_blk: Sort function declarations

426b9f5cac892c9c64cc7631966461514f7e08c6
      virtio_blk: Cleanup whitespace

617c23e12c61e3c2233d942db713c6b8ff0bd112
      virtio_blk: Call disk_err() on error'd completed requests

081a5712d4b2e0abf273be4d26affcf3870263a9
      virtio_blk: ASSERT the ready and inflight request queues are empty

a9be2631a4f770a84145c18ee03a3f103bed4ca8
      virtio_blk: Simplify check for too many segments

      At the cost of a small style violation.

e00ec09da014f2e60cc75542d0ab78898672d521
      virtio_blk: Add beginnings of suspend/resume

      Still not sure if we need to virtio_stop()/virtio_reinit()
      the device before/after a suspend.

      Don't start additional IO when marked as suspending.

47c71dc6ce8c238aa59ce8afd4bda5aa294bc884
      virtio_blk: Panic when dealt an unhandled BIO cmd

1055544f90fb8c0cc6a2395f5b6104039606aafe
      virtio_blk: Add VQ enqueue/dequeue wrappers

      Wrapper functions managed the added/removing to the in-flight
      list of requests.

      Normally biodone() any completed IO when draining the virtqueue.

92ba40e65b3bb5e4acb9300ece711f1ea8f3f7f4
      virtio_blk: Add in-flight list of requests

74f6d260e075443544522c0833dc2712dd93f49b
      virtio_blk: Rename VTBLK_FLAG_DETACHING to VTBLK_FLAG_DETACH

7aa549050f6fc6551c09c6362ed6b2a0728956ef
      virtio_blk: Finish all BIOs through vtblk_finish_bio()

      Also properly set bio_resid in the case of errors. Most geom_disk
      providers seem to do the same.

9eef6d0e6f7e5dd362f71ba097f2e2e4c3744882
      Added function to translate VirtIO status to error code

ef06adc337f31e1129d6d5f26de6d8d1be27bcd2
      Reset dumping flag when given unexpected parameters

393b3e390c644193a2e392220dcc6a6c50b212d9
      Added missing VTBLK_LOCK() in dump handler

Obtained from:	Bryan Venteicher  bryanv at daemoninthecloset dot org
2012-04-14 05:48:04 +00:00
Adrian Chadd
27ce86b8b6 Both linux ath9k and the reference driver initialises the PLL here
during chip wakeup.

Obtained from:	Linux ath9k, Atheros
2012-04-14 04:40:11 +00:00
Marius Strobl
34f4e555b5 Add a driver for the NXP (Philips) PCF8563 RTC.
Obtained from:	NetBSD (pcf8563reg.h)
2012-04-13 23:07:32 +00:00
Marius Strobl
7b88f42369 Merge from x86:
r233961:

Fix interrupt load balancing regression, introduced in revision
222813, that left all un-pinned interrupts assigned to CPU 0.
In intr_shuffle_irqs(), remove CPU_SETOF() call that initialized
the "intr_cpus" cpuset to only contain CPU0.

This initialization is too late and nullifies the results of calls
to the intr_add_cpu() that occur much earlier in the boot process.

r234074 (partial):

The BSP is not added to the mask of valid target CPUs for interrupts.
Fix this by adding the BSP as an interrupt target directly in

r234105:

Fix !SMP build after r234074.

MFC after: 3 days
2012-04-13 22:58:23 +00:00
Luigi Rizzo
ce2cb79269 fix build with -Wformat -Wmissing-prototypes 2012-04-13 22:24:57 +00:00
Adrian Chadd
c4b28bdc27 Flesh out the rest of the AP96 board/config. 2012-04-13 20:23:32 +00:00
Josh Paetzel
c4d87335a8 Update to version 2.3.1.0
Obtained from:	Daniel Braniss <danny@cs.huji.ac.il>
2012-04-13 18:21:56 +00:00
Adrian Chadd
d591b27dbc * Enable ATH_EEPROM_FIRMWARE, now that it's a compile time option
* Tidy up things a bit.
2012-04-13 18:01:53 +00:00
Adrian Chadd
79f57b35ce Upgrade ATH_EEPROM_FIRMWARE to a configuration option. 2012-04-13 18:00:48 +00:00
Luigi Rizzo
9b034c6f08 Properly disable crc stripping when operating in netmap mode.
Contrarily to what i wrote in my previous commit, the 82599
does include the CRC in the length. The operating mode is
reset in ixgbe_init_locked() and so we need to hook into
the places where the two registers (HLREG0 and RDRXCTL) are
modified.
2012-04-13 16:42:54 +00:00
Luigi Rizzo
ccdc3305e4 add the new memory allocator for netmap, which allocates memory
in small clusters instead of one big contiguous chunk.
This was already enabled in the previous commit.
2012-04-13 16:32:33 +00:00
Luigi Rizzo
d76bf4ff7b A bit of cleanup in the names of fields of netmap-related structures.
Use the name 'ring' instead of 'queue' in all fields.
Bump NETMAP_API.
2012-04-13 16:03:07 +00:00
Luigi Rizzo
82d2fe1069 do not use a deprecated field in a structure. 2012-04-13 15:33:12 +00:00
Adrian Chadd
2c61ba4db2 These are uboot, so mark them as such or booting from flash will not work. 2012-04-13 08:56:23 +00:00
Adrian Chadd
3a8a3eebfd Introduce configuration files for AP94 and AP96.
This uses the new firmware(9) method for squirreling away the EEPROM
contents from SPI flash so ath(4) can get to them later.

It won't work out of the box just yet - you have to add this to
if_ath_pci.c:

#define ATH_EEPROM_FIRMWARE

.. until I've added it as a configuration option and updated things.
2012-04-13 08:52:25 +00:00
Adrian Chadd
0f60da6fb4 Introduce the ability to grab local EEPROM data from the firmware(9)
interface.

* Introduce a device hint, 'eeprom_firmware', which is the name of firmware
  to lookup.
* If the lookup succeeds, take a copy of it and use it as the eeprom data.

This isn't enabled by default - you have to define ATH_EEPROM_FIRMWARE.
I'll add it to the configuration variables in a later commit.

TODO:

* just keep a firmware reference in ath_softc, and remove the need to
  waste the extra memory in having sc_eepromdata be a malloc()ed block.
2012-04-13 08:48:38 +00:00
Adrian Chadd
8f7015e205 (ab)Use the firmware API to store away EEPROM calibration data for
future use by the ath(4) driver.

These embedded devices put the calibration/PCI bootstrap data on the
on board SPI flash rather than on an EEPROM connected to the NIC.
For some boards, there's two NICs and two sets of EEPROM data in the
main SPI flash.

The particulars:

* Introduce ath_fixup_size, which is the size of the EEPROM area in
  bytes.
* Create a firmware image with a name based on the PCI device identifier
  (bus/slot/device/function).
* Hide some verbose debugging behind 'bootverbose'.

ath(4) can then use this to load in the EEPROM data.

This requires AR71XX_ATH_EEPROM to be defined.
2012-04-13 08:45:50 +00:00
Andriy Gapon
56c2dc796b add actual interrupt counters to back ipi_invlcache_counts
Otherwise one could run into a panic with COUNT_IPIS when cache
invalidation actually happened.

Reviewed by:	jhb
MFC after:	1 week
2012-04-13 07:18:19 +00:00
Andriy Gapon
f84633cdcc bump INTRCNT_COUNT values to reflect actual numbers of IPI counters
Maybe the numbers should be conditionalized on COUNT_IPIS

Reviewed by:	jhb
MFC after:	1 week
2012-04-13 07:15:40 +00:00
Adrian Chadd
8a138d80d0 Remove an unused variable. Grr. 2012-04-13 06:13:37 +00:00
Adrian Chadd
be94a28e2a Sync this code against what's in OpenWRT trunk.
* the openwrt code doesn't treat 0/0/0 any differently
  from other bus/slot/func combinations.
* A "local write" function writes to the LCONF area, and
  so I've added it.
* The PCI workaround at attach time uses this LCONF code,
  which it already did ..
* .. but it is a 4 byte write, not a 2 byte write.
  Even though it's PCIR_COMMAND which is a two byte PCI register.

Tested on:	AR7161
TODO:		The other two AR71xx derivatives
TODO:		More thoroughly stare at the datasheets I do have
		and if it indeed is incorrect, push fixes to both
		FreeBSD and Linux/OpenWRT.

Obtained from:	Linux OpenWRT
2012-04-13 06:11:24 +00:00
Jaakko Heinonen
295a542d96 Apply changes from r234103 to ext2fs:
Return EPERM from ext2_setattr() when an user without PRIV_VFS_SYSFLAGS
privilege attempts to toggle SF_SETTABLE flags.

Flags are now stored to ip->i_flags in one place after all checks.

Also, remove SF_NOUNLINK from the checks because ext2fs doesn't support
that flag.

Reviewed by:	bde
2012-04-13 05:48:31 +00:00
Adrian Chadd
676c1784cb Use strdup() on the name (and free it when it's done) so non-static names
can be used in firmware_register().
2012-04-13 04:22:42 +00:00
John Baldwin
28926c5766 Update the ddb and gdb backends for the new 'trace_thread' hook.
It is implemented via db_trace_thread() for DDB and not implemented
for GDB.  This should have been part of r234190.

Pointy hat to:	jhb
Reported by:	jkim
MFC after:	1 week
2012-04-12 21:34:58 +00:00
Peter Grehan
332cda07c0 Complete polled-mode operation by using a callout if the device will be
used in polled-mode. The callout invokes uart_intr, which rearms the timeout.
Implemented for bhyve, but generically useful for e.g. embedded bringup
when the interrupt controller hasn't been setup, or if it's not deemed
worthy to wire an interrupt line from a serial port.

Submitted by:	neel
Reviewed by:	marcel
Obtained from:	NetApp
MFC after:	3 weeks
2012-04-12 18:46:48 +00:00
John Baldwin
0cc457b000 - Extend the KDB interface to add a per-debugger callback to print a
backtrace for an arbitrary thread (rather than the calling thread).
  A kdb_backtrace_thread() wrapper function uses the configured debugger
  if possible, otherwise it falls back to using stack(9) if that is
  available.
- Replace a direct call to db_trace_thread() in propagate_priority()
  with a call to kdb_backtrace_thread() instead.

MFC after:	1 week
2012-04-12 17:43:59 +00:00
John Baldwin
7582954e34 If a linker file contains at least one module, but all of the modules
fail to load (the MOD_LOAD event fails) during a kldload(2), unload the
linker file and fail the kldload(2) with ENOEXEC.

Reported by:	gcooper
MFC after:	1 week
2012-04-12 14:49:25 +00:00
Luigi Rizzo
4f609083e5 Apparently the length field in advanced descriptors
does not include the CRC irrespective of the setting
of CRCSTRIP. The 82599 data sheets (sec. 7.1.6) say differently.
Very strange. Need to check what happens on legacy descriptors,
but for the time being this restores functionality.
2012-04-12 14:06:05 +00:00
John Baldwin
ed5a2b61fd Add OFED and the associated options and drivers to x86 LINT builds:
- Mark 'sdp' as requiring 'inet'.
- Always include "opt_inet.h" and "opt_inet6.h" and modify the IB
  driver Makefiles to honor WITH/WITHOUT_INET/INET6/_SUPPORT options
  to determine what should be enabled during a module build.
- Fix the mlxen(4) driver and the core IB code to compile without
  if INET is disabled (including when both INET and INET6 are disabled).

Reviewed by:	bz
MFC after:	2 weeks
2012-04-12 14:01:06 +00:00
John Baldwin
6937a7ac6b Don't update if_obytes when transmitting packets. That is already done
in IFQ_HANDOFF() when the packet is passed to the start routine, so doing
it here resulted in double counting.

Reported by:	Alex Tutubalin  lexa lexa ru
MFC after:	1 week
2012-04-12 13:53:49 +00:00
Edward Tomasz Napierala
c32b19833b Refactor da(4) to remove one of two code paths used to query capacity
data.

Reviewed by:	ken, mav (earlier version)
Sponsored by:	The FreeBSD Foundation
2012-04-12 12:58:14 +00:00
Andrey V. Elsukov
9dd5659756 Read backup GPT header from the last LBA only when primary GPT header and
table aren't valid. If they are ok, use hdr_lba_alt value to read backup
header. This will make gptboot happy when GPT used atop of some GEOM
provider, e.g. GEOM_MIRROR.

Reviewed by:	pjd
MFC after:	2 weeks
2012-04-12 12:37:53 +00:00
Luigi Rizzo
3c0caf6ce6 Some code restructuring to bring the memory allocator out of netmap.c
and make it easier to replace it with a different implementation.
On passing, also fix indentation.

NOTE: I know that #include "foo.c" is ugly, but the alternative
(add another entry to sys/conf/files, add a separate header with
structs and prototypes, and expose functions that are meant to
be private) looks even worse to me.
We need a more modular way to specify dependencies and build options.
2012-04-12 11:27:09 +00:00
Konstantin Belousov
2dd9ea6f70 Add thread-private flag to indicate that error value is already placed
in td_errno. Flag is supposed to be used by syscalls returning
EJUSTRETURN because errno was already placed into the usermode frame
by a call to set_syscall_retval(9). Both ktrace and dtrace get errno
value from td_errno if the flag is set.

Use the flag to fix sigsuspend(2) error return ktrace records.

Requested by:	bde
MFC after:	1 week
2012-04-12 10:48:43 +00:00
Luigi Rizzo
d5d42003f4 remove an unnecessary #define 2012-04-12 10:32:34 +00:00
Luigi Rizzo
13b9940fdc use correct selinfo pointer for the generic interrupt handler
(it is never used in current FreeBSD drivers).
2012-04-12 08:54:01 +00:00
Andrew Thompson
b517176ad9 Set the proto to LAGG_PROTO_NONE before calling the detach routine so packets
are discarded, this is an issue because lacp drops the lock which may allow
network threads to access freed memory. Expand the lock coverage so the
detach/attach happen atomically.

Submitted by:	Andrew Boyer (earlier version)
2012-04-12 01:07:17 +00:00
Kirk McKusick
ecb6e528c5 Export vinactive() from kern/vfs_subr.c (e.g., make it no longer
static and declare its prototype in sys/vnode.h) so that it can be
called from process_deferred_inactive() (in ufs/ffs/ffs_snapshot.c)
instead of the body of vinactive() being cut and pasted into
process_deferred_inactive().

Reviewed by: kib
MFC after:   2 weeks
2012-04-11 23:01:11 +00:00
Kirk McKusick
e8f8ad7266 Whitespace cleanup. 2012-04-11 22:43:40 +00:00
Nathan Whitehorn
e3c2930d36 We don't need kcopy() in any of the remaining places it is used, so
remove it.

MFC after:	2 weeks
2012-04-11 22:23:50 +00:00
Nathan Whitehorn
b6aeb1ab97 Only manipulate the PGA_EXECUTABLE flag on managed pages. This is a proxy
for whether the page is physical. On dense phys mem systems (32-bit),
VM_PHYS_TO_PAGE will not return NULL for device memory pages if device
memory is above physical memory even if there is no allocated vm_page.
Attempting to use the returned page could then cause either memory
corruption or a page fault.
2012-04-11 21:56:55 +00:00
John Baldwin
8546e82467 Reapply r223198 which was reverted in the previous vendor import. Some
portions were already reapplied in r233708:
- Use a dedicated task to handle deferred transmits from the if_transmit
  method instead of reusing the existing per-queue interrupt task.
  Reusing the per-queue interrupt task could result in both an interrupt
  thread and the taskqueue thread trying to handle received packets on a
  single queue resulting in out-of-order packet processing.
- Call ether_ifdetach() earlier in igb_detach().
- Drain tasks and free taskqueues during igb_detach().

MFC after:	1 week
2012-04-11 21:33:45 +00:00
John Baldwin
45b516f642 Trim stray blank line. 2012-04-11 21:00:33 +00:00
John Baldwin
77b479e644 Allow device_busy() and device_unbusy() to be invoked while a device is
being attached.  This is implemented by adding a new DS_ATTACHING state
while a device's DEVICE_ATTACH() method is being invoked.  A driver is
required to not fail an attach of a busy device.  The device's state will
be promoted to DS_BUSY rather than DS_ACTIVE() if the device was marked
busy during DEVICE_ATTACH().

Reviewed by:	kib
MFC after:	1 week
2012-04-11 20:57:41 +00:00
Nathan Whitehorn
805bee55eb Fix error in r233949. Synchronizing icaches on uncacheable pages turns out
not to be a good idea, and of course the PV entry list for a page is never
empty after the page has been mapped.
2012-04-11 20:28:05 +00:00
Luigi Rizzo
c85cb1a0a2 A couple of changes related to ixgbe operation in netmap mode:
- add a sysctl, dev.netmap.ix_crcstrip, to control whether ixgbe should
  strip the CRC on received frames. Defaults to 0, which keeps the CRC.
  and improves performance when receiving min-sized (64-byte) frames.
  This matters because  min-sized frames is one of the standard
  benchmarks for switches and routers, some chipsets seem to issue
  read-modify-write cycles for PCIe transactions that are not a
  full cache line, and a min-sized frame triggers the bug, resulting
  in reduced throughput -- 9.7 instead of 14.88 Mpps -- and heavy
  bus load.

- for the time being, always look for incoming packets on a select/poll
  even if there has not been an interrupt in the meantime. This is
  only a temporary workaround for a probable race condition in keeping
  track of rx interrupts.
  Add a couple of diagnostic vars to help studying the problem.
2012-04-11 16:11:08 +00:00
Jaakko Heinonen
e6b8bdf252 Restore the blank line incorrectly removed in r234104.
Pointed out by:	bde
2012-04-11 15:48:50 +00:00
Luigi Rizzo
aa15c59eb1 Enable prefetching of descriptors on the TX ring, using the same
values as in the Intel driver 3.8.21 for linux.  The fact that it
is standard in the above driver suggests that it has no bad side
effects.

But of course there must be a reason for enabling features, not
just "it does not harm", so here it is a good one:

Prefetching enables full line rate even using a single queue (14.88
Mpps, compared to ~12 Mpps without prefetch).  This in turn is
terribly useful when one wants to schedule traffic.

For obvious reasons the difference is only visible with netmap
or other high speed solutions, but presumably the advantage
should be in the order of a fraction of a microsecond when
starting transmission on an empty queue.

Discussed with Jack Vogel.

MFC after:	1 week
2012-04-11 15:02:14 +00:00
Eitan Adler
847d0034e3 Return EBADF instead of EMFILE from dup2 when the second argument is
outside the range of valid file descriptors

PR:		kern/164970
Submitted by:	Peter Jeremy <peterjeremy@acm.org>
Reviewed by:	jilles
Approved by:	cperciva
MFC after:	1 week
2012-04-11 14:08:09 +00:00
Gleb Smirnoff
a9a2c40ced It is a logical error that in carp_multicast_cleanup()
we look at count of addresses on a particular vhid, we
should account number of addresses on cif.

To achieve this we need to run carp_attach() and
carp_detach() under appropriate cif lock.
2012-04-11 12:26:30 +00:00
Pyun YongHyeon
7e0fa14052 Back out r228476.
r228476 fixed superfluous link UP/DOWN messages but broke IPMI
access during boot.  It's not clear why r228476 breaks IPMI and
should be revisited.

Reported by:	Paul Guyot <paulguyot <> ieee dot org >
MFC after:	1 week
2012-04-11 06:34:25 +00:00
Marcel Moolenaar
2059ee3cc0 uart_cpu_amd64.c and uart_cpu_i386.c (under sys/dev/uart) are
identical now that the bus spaces are unified under sys/x86.
Replace them with a single uart_cpu_x86.c.
o   delete uart_cpu_i386.c
o   move uart_cpu_amd64.c to uart_cpu_x86.c
o   update files.amd64 and files.i386 accordingly.
2012-04-11 02:42:01 +00:00
Adrian Chadd
53e98d5a48 Fix the default, non-superg compile.
Pointy-hat-to:	adrian
2012-04-11 02:34:32 +00:00
Nathan Whitehorn
88fe385600 Do not restore the register holding the TLS pointer when doing various
usermode context switches (long jumps and ucontext operations). If these
are used across threads, multiple threads can end up with the same TLS base.
Madness will then result.

This makes behavior on PPC match that on x86 systems and on Linux.

MFC after:	10 days
2012-04-11 00:00:40 +00:00
Adrian Chadd
43faa6b266 Fix compilation with IEEE80211_ENABLE_SUPERG defined.
PR:		kern/164951
2012-04-10 19:47:44 +00:00
Adrian Chadd
f8ab7a9fc9 Convert the flags over to a set of bit flags. 2012-04-10 19:25:43 +00:00
Jim Harris
cb77f0da67 Queue CCBs internally instead of using CAM_REQUEUE_REQ status. This fixes
problem where userspace apps such as smartctl fail due to CAM_REQUEUE_REQ
status getting returned when tagged commands are outstanding when smartctl
sends its I/O using the pass(4) interface.

Sponsored by: Intel
Found and tested by: Ravi Pokala <rpokala at panasas dot com>
Reviewed by: scottl
Approved by: scottl
MFC after: 1 week
2012-04-10 16:33:19 +00:00
Marius Strobl
0fec3e2d81 Fix !SMP build after r234074.
Reviewed by:	attilio, jhb
2012-04-10 16:08:46 +00:00
Jaakko Heinonen
034efc61ba Apply changes from r233787 to ext2fs:
- Use more natural ip->i_flags instead of vap->va_flags in the final
  flags check.
- Style improvements.

No functional change intended.

MFC after:	2 weeks
2012-04-10 16:05:52 +00:00
Jaakko Heinonen
fce74feae1 - Return EPERM from ufs_setattr() when an user without PRIV_VFS_SYSFLAGS
privilege attempts to toggle SF_SETTABLE flags.
- Use the '^' operator in the SF_SNAPSHOT anti-toggling check.

Flags are now stored to ip->i_flags in one place after all checks.

Submitted by:	bde
2012-04-10 15:59:37 +00:00
John Baldwin
efbebba22a Properly parse 40G media types from newer Mellanox adapters that are
40G capable.  For now, map all 40G links to 40GBase-CR4.

MFC after:	2 weeks
2012-04-10 14:01:09 +00:00
John Baldwin
19a3210a66 Add media types for 40G media that might be used with FreeBSD.
Reviewed by:	bz
MFC after:	2 weeks
2012-04-10 13:59:35 +00:00
Adrian Chadd
41b6b5074c Blank the aggregate stats whenever the zero ioctl is called. 2012-04-10 07:27:42 +00:00
Adrian Chadd
9467e3f3fc Squirrel away SYNC interrupt debugging if it's enabled in the HAL.
Bus errors will show up as various SYNC interrupts which will be passed
back up to ath_intr().
2012-04-10 07:23:37 +00:00
Adrian Chadd
eddd7521f1 Revert this for now - it may work for -8 and -9 and -HEAD, but not
"-HEAD driver + net80211 on -9 kernel."

I'll figure this out at some later stage.
2012-04-10 07:16:28 +00:00
Adrian Chadd
b779c10b12 Squirrel away the SYNC interrupt in case we're doing interrupt debugging. 2012-04-10 07:11:33 +00:00
Gleb Smirnoff
90b357f6ec M_DONTWAIT is a flag from historical mbuf(9)
allocator, not malloc(9) or uma(9) flag.
2012-04-10 06:52:39 +00:00
Gleb Smirnoff
e275c0d349 M_DONTWAIT is a flag from historical mbuf(9)
allocator, not malloc(9) or uma(9) flag.
2012-04-10 06:52:21 +00:00
Adrian Chadd
fdd72b4a32 * Since the API changed along the -CURRENT path (december 2011),
add a FreeBSD_version check.  It should work fine for compiling
  on -HEAD, 9.x and 8.x.

* Conditionally compile the 11n options only when 11n is enabled.

The above changes allow the ath(4) driver to compile and run on
8.1-RELEASE (Hi old PC-BSD!) but with the 11n stuff disabled.

I've done a test against the net80211 and tools in 8.1-RELEASE.
The NIC used in testing is the AR2427 in an EEEPC.

Just to be clear - this change is to allow the -HEAD ath/hal/rate
code to run on 9.x _and_ 8.x with no source changes. However,
when running on earlier kernels, it should only be used for legacy
mode. (Don't define ATH_ENABLE_11N.)
2012-04-10 06:25:11 +00:00
Gleb Smirnoff
9ca1fe0db8 CARP should be capable to run on if_bridge(4). Unfortunately,
this commit is not enough to enable CARP operation on
if_bridge(4), because the latter doesn't handle or even
initialize its ifp->if_link_state.

Reported by:	Alexander Lunev <sol289 gmail.com>
2012-04-10 05:42:48 +00:00
Attilio Rao
79257559ee BSP is not added to the mask of valid target CPUs for interrupts
in set_apic_interrupt_ids(). Besides, set_apic_interrupts_ids() is not
called in the !SMP case too.
Fix this by:
- Adding the BSP as an interrupt target directly in cpu_startup().
- Remove an obsolete optimization where the BSP are skipped in
  set_apic_interrupt_ids().

Reported by:	jh
Reviewed by:	jhb
MFC after:	3 days
X-MFC:		r233961
Pointy hat to:	me
2012-04-09 22:41:19 +00:00
Jilles Tjoelker
8a8be77610 Remove unused and wrong SA_PROC internal signal property.
The SA_PROC signal property indicated whether each signal number is directed
at a specific thread or at the process in general. However, that depends on
how the signal was generated and not on the signal number. SA_PROC was not
used.
2012-04-09 21:58:58 +00:00
Alexander Motin
70801abe8f Microoptimize cpu_search().
According to profiling, it makes one take 6% of CPU time on hackbench
with its million of context switches per second, instead of 8% before.
2012-04-09 18:24:58 +00:00
Attilio Rao
a0f2c37b6f - Introduce a cache-miss optimization for consistency with other
accesses of the cache member of vm_object objects.
- Use novel vm_page_is_cached() for checks outside of the vm subsystem.

Reviewed by:	alc
MFC after:	2 weeks
X-MFC:		r234039
2012-04-09 17:05:18 +00:00
John Baldwin
bcd6068179 Recognize the RDRAND instruction feature.
Submitted by:	Michael Fuckner  michael fuckner net
MFC after:	3 days
2012-04-09 15:20:16 +00:00
Andriy Gapon
2885c2e4bb intpm: return only SMB bus error codes from SMB methods
PR:		kern/25733
MFC after:	5 days
2012-04-08 20:48:39 +00:00
Andriy Gapon
32048b2bff intpm: reflect the fact that SB800 and later AMD chipsets are not supported
They do not have compatible configuration registers in PCI configuration
space.  Instead their configuration resides in AMD "PM I/O" space
(accessed via a pair of I/O space registers).

MFC after:	5 days
2012-04-08 19:58:38 +00:00
Alan Cox
1c8279e4e7 Fix mincore(2) so that it reports PG_CACHED pages as resident.
MFC after:	2 weeks
2012-04-08 18:25:12 +00:00
Alan Cox
908e3da10e If a page belonging a reservation is cached, then mark the reservation so
that it will be freed to the cache pool rather than the default pool.
Otherwise, the cached pages within the reservation may be recycled sooner
than necessary.

Reported by:	Andrey Zonov
2012-04-08 17:00:46 +00:00
Edward Tomasz Napierala
2b028c25d3 Fix panic in ffs_reload(), which may happen when read-only filesystem
gets resized and then reloaded.

Reviewed by:	kib, mckusick (earlier version)
Sponsored by:	The FreeBSD Foundation
2012-04-08 13:44:55 +00:00
Robert Watson
b4ef8be228 When allocation of labels on files is implicitly disabled due to MAC
policy configuration, avoid leaking resources following failed calls
to get and set MAC labels by file descriptor.

Reported by:	Mateusz Guzik <mjguzik at gmail.com> + clang scan-build
MFC after:	3 days
2012-04-08 11:01:49 +00:00
Kirk McKusick
85121b0979 Expand locking around identification of filesystem mount point when
accounting for I/O counts at completion of I/O operation. Also switch
from using global devmtx to vnode mutex to reduce contention.

Suggested and reviewed by: kib
2012-04-08 06:20:21 +00:00
Kirk McKusick
827e334c01 Add I/O accounting to msdos filesystem.
Suggested and reviewed by: kib
2012-04-08 06:18:18 +00:00
Kirk McKusick
b73ffa31d4 Drop an unnecessary setting of si_mountpt when updating a UFS mount point.
Clearly it must have been set when the mount was done.

Reviewed by: kib
2012-04-08 06:14:49 +00:00
Adrian Chadd
fcacf9318c Add some statistics to track BAR TX. 2012-04-08 04:51:25 +00:00
Adrian Chadd
b43facbff3 After reviewing the mcast/sleep station code a little, undo some brain
damage which I committed when I had less clue about such things.

Don't ever put normal data frames on the mcast software queue.
Just put mcast frames there if needed.

Pass the txq decision into ath_tx_normal_setup(), as we've already made
the decision.  Don't re-do it.

Whilst i'm here, add another random debugging statement.
2012-04-08 00:40:16 +00:00
Stanislav Sedov
b30d62be27 - Revert part of r234005, which I did not intend to commit.
Sorry! :(
2012-04-07 23:51:16 +00:00
Stanislav Sedov
47db1ea0bf - Add kernel config file for QEMU-emulated gumstix board. 2012-04-07 23:48:51 +00:00
Stanislav Sedov
208cf1fbc3 - Add new ARM kernel option QEMU_WORKAROUNDS which can be
used in the code which needs to implement some specific
  behaviour when being run under QEMU.
- Make PXA UART probe code to work under QEMU gumstix, which
  doesn't emulate all the ports properly.
2012-04-07 23:47:08 +00:00
Gleb Kurtsou
9295c62814 tmpfs supports only INT_MAX nodes due to limitations of unit number
allocator.

Replace UINT32_MAX checks with INT_MAX. Keeping more than 2^31 nodes in
memory is not likely to become possible in foreseeable feature and would
require new unit number allocator.

Discussed with: delphij
MFC after:	2 weeks
2012-04-07 15:30:46 +00:00
Gleb Kurtsou
0ff93c48da Add vfs_getopt_size. Support human readable file system options in tmpfs.
Increase maximum tmpfs file system size to 4GB*PAGE_SIZE on 32 bit archs.

Discussed with:	delphij
MFC after:	2 weeks
2012-04-07 15:27:34 +00:00
Gleb Kurtsou
da7aa2778e Add reserved memory limit sysctl to tmpfs.
Cleanup availble and used memory functions.
Check if free pages available before allocating new node.

Discussed with:	delphij
2012-04-07 15:23:51 +00:00
Stanislav Sedov
8a31831551 - Do not reinitialize the card if it is already running.
This fixes bootp on if_smc, as bootp code perform SIOCSIFADDR
  ioctl call immediately after sending the request (which causes
  if_init being called) which causes the adapter to drop all the
  packets received in the meantime.
2012-04-07 06:56:38 +00:00
Adrian Chadd
4d7f883711 Do a dma sync before the descriptors are chained together.
I need to find a better place to do this..
2012-04-07 05:51:43 +00:00
Adrian Chadd
e2e4a2c2a1 Break out the legacy duration and protection code into routines,
call these after rate control selection is done.

The duration/protection code wasn't working - it expected the rix to
be valid.  Unfortunately after I moved the rate control selection into
late in the process, the rix value isn't valid and thus the protection/
duration code would get things wrong.

HT frames are now correctly protected with an RTS and for the AR5416,
this involves having the aggregate frames be limited to 8K.

TODO:

* Fix up the DMA sync to occur just before the frame is queued to the
  hardware.  I'm adjusting the duration here but not doing the DMA
  flush.

* Doubly/triply ensure that the aggregate frames are being limited to
  the correct size, or the AR5416 will get unhappy when TXing RTS-protected
  aggregates.
2012-04-07 05:48:26 +00:00
Adrian Chadd
781e7eaffd As I thought, this is a bad idea. When forming aggregates, the RTS/CTS
stuff and rate control lookup is only done on the first frame.
2012-04-07 05:46:00 +00:00
Adrian Chadd
045bc7882e Enforce the RTS aggregation limit if RTS/CTS protection is enabled;
if any subframes in an aggregate have different protection from the
first frame in the formed aggregate, don't add that frame to the
aggregate.

This is likely a suboptimal method (I think we'll mostly be OK marking
frames that have seqno's with the same protection as normal data frames)
but I'll just be cautious for now.
2012-04-07 03:22:11 +00:00
Adrian Chadd
ce656facf3 Store away the RTS aggregate limit from the HAL.
This will be used by some upcoming code to ensure that aggregates
are enforced to be a certain size.  The AR5416 has a limitation on
RTS protected aggregates (8KiB).
2012-04-07 02:51:53 +00:00
Adrian Chadd
875a9451d9 Remove duplicate txflags field from ath_buf.
rename bf_state.bfs_flags to bf_state.bfs_txflags, as that is what
it effectively is.
2012-04-07 02:01:26 +00:00
Nathan Whitehorn
b7d0d1fabf Execute an initial ptesync if and only if the PTE is actually being
invalidated, as opposed to a ref/changed bit update.
2012-04-06 22:33:13 +00:00
Kenneth D. Merry
bf8f8f340e Change the SCSI INQUIRY peripheral qualifier that CTL reports for LUNs
that don't exist.

Anecdotal evidence indicates that it is better to return 011b (bad LUN)
than 001b (LUN offline).  However, this change also gives the user a
sysctl/tunable, kern.cam.ctl.inquiry_pq_no_lun, to override the change
and return to the previous behavior.  (The previous behavior was to
return 001b, or LUN offline.)

ctl.c:		Change the default inquiry peripheral qualifier to 011b,
		and add a sysctl and tunable to allow the user to change
		it back to 001b if needed.

		Don't insert a Copan copyright statement in the inquiry
		data.  The copyright statements on the files are
		sufficient.

ctl_private.h:	Add sysctl variable context to the CTL softc.

ctl_cmd_table.c,
ctl_frontend_internal.c,
ctl_frontend.c,
ctl_backend.c,
ctl_error.c:	Include sys/sysctl.h.

MFC after:	3 days
2012-04-06 22:23:13 +00:00
Justin T. Gibbs
47c77b2265 Fix interrupt load balancing regression, introduced in revision
222813, that left all un-pinned interrupts assigned to CPU 0.

sys/x86/x86/intr_machdep.c:
	In intr_shuffle_irqs(), remove CPU_SETOF() call that initialized
	the "intr_cpus" cpuset to only contain CPU0.

	This initialization is too late and nullifies the results of calls
	the intr_add_cpu() that occur much earlier in the boot process.
	Since "intr_cpus" is statically initialized to the empty set, and
	all processors, including the BSP, already add themselves to
	"intr_cpus" no special initialization for the BSP is necessary.

MFC after:	3 days
2012-04-06 21:19:28 +00:00
Attilio Rao
d1aa86e151 Staticize vm_page_cache_remove().
Reviewed by:	alc
2012-04-06 20:34:00 +00:00
Nathan Whitehorn
348bc07000 Substantially reduce the scope of the locks held in pmap_enter(), which
improves concurrency slightly.
2012-04-06 18:18:48 +00:00
Alan Cox
3e4c7bf65a Micro-optimize free_pv_entry() for the expected case. 2012-04-06 16:41:19 +00:00
Nathan Whitehorn
57bd5cce62 Reduce the frequency that the PowerPC/AIM pmaps invalidate instruction
caches, by invalidating kernel icaches only when needed and not flushing
user caches for shared pages.

Suggested by:	kib
MFC after:	2 weeks
2012-04-06 16:03:38 +00:00
Nathan Whitehorn
629e40e45e Give the kernel pmap lock a different name than user pmap locks. It has
(slightly) different semantics and renaming it prevents a (harmless)
WITNESS warning during bootup for 32-bit kernels on 64-bit CPUs.

MFC after:	5 days
2012-04-06 16:00:37 +00:00
Alexander V. Chernikov
9431cc1696 Fix build broken by r233938.
Pointed by:     David Wolfskill <david@catwhisker.org>
Approved by:    kib (mentor)
Pointy hat to:  melifaro
2012-04-06 13:34:19 +00:00
Andriy Gapon
bec9e056eb retrofit Safe Mode loader menu item actions
The menu item is now made completely independent with the ACPI item - most
modern systems seem to require ACPI and become even more "unsafe"
without it.
Safe Mode no longer disables APIC for the same reason.
kbdmux is not disabled as this feature has proven itself stable.

New actions:
- SMP is disabled in the Safe Mode now
- eventtimers are forced to periodic mode (some real and virtual systems
  seem to have problems otherwise)
- geom extra vigorous integrity checking is disabled, this is to
  facilitate migration from previous versions

Possible short term to do:
- make SMP switch a separate menu item
- restore APIC switch as a separate menu item

Longer term to do:
- turn various tweaks into separate menu items in a Safe Mode sub-menu

Please consider adding a safety tweak to Safe Mode when introducing
new major features or changes that may cause instabilities.

Discussed with:	jhb, scottl, Devin Teske
MFC after:	3 weeks (stable/9 only)
2012-04-06 09:36:22 +00:00
Michael Tuexen
17b611fb21 Remove duplicate condition in if statement.
Obtained from: brucec@
MFC after: 3 days
2012-04-06 09:03:02 +00:00
Sergey Kandaurov
e84459d04b Free ballooned pages with the corresponding malloc type.
MFC after:	1 week
2012-04-06 08:13:29 +00:00
Alexander V. Chernikov
51ec1eb70d - Improve performace for writer-only BPF users.
Linux and Solaris (at least OpenSolaris) has PF_PACKET socket families to send
raw ethernet frames. The only FreeBSD interface that can be used to send raw frames
is BPF. As a result, many programs like cdpd, lldpd, various dhcp stuff uses
BPF only to send data. This leads us to the situation when software like cdpd,
being run on high-traffic-volume interface significantly reduces overall performance
since we have to acquire additional locks for every packet.

Here we add sysctl that changes BPF behavior in the following way:
If program came and opens BPF socket without explicitly specifyin read filter we
assume it to be write-only and add it to special writer-only per-interface list.
This makes bpf_peers_present() return 0, so no additional overhead is introduced.
After filter is supplied, descriptor is added to original per-interface list permitting
packets to be captured.

Unfortunately, pcap_open_live() sets catch-all filter itself for the purpose of
setting snap length.

Fortunately, most programs explicitly sets (event catch-all) filter after that.
tcpdump(1) is a good example.

So a bit hackis approach is taken: we upgrade description only after second
BIOCSETF is received.

Sysctl is named net.bpf.optimize_writers and is turned off by default.

- While here, document all sysctl variables in bpf.4

Sponsored by Yandex LLC

Reviewed by:    glebius (previous version)
Reviewed by:    silence on -net@
Approved by:    (mentor)

MFC after:      4 weeks
2012-04-06 06:55:21 +00:00
Alexander V. Chernikov
e4b3229aa5 - Improve BPF locking model.
Interface locks and descriptor locks are converted from mutex(9) to rwlock(9).
This greately improves performance: in most common case we need to acquire 1
reader lock instead of 2 mutexes.

- Remove filter(descriptor) (reader) lock in bpf_mtap[2]
This was suggested by glebius@. We protect filter by requesting interface
writer lock on filter change.

- Cover struct bpf_if under BPF_INTERNAL define. This permits including bpf.h
without including rwlock stuff. However, this is is temporary solution,
struct bpf_if should be made opaque for any external caller.

Found by:       Dmitrij Tejblum <tejblum@yandex-team.ru>
Sponsored by:   Yandex LLC

Reviewed by:    glebius (previous version)
Reviewed by:    silence on -net@
Approved by:    (mentor)

MFC after:      3 weeks
2012-04-06 06:53:58 +00:00
John Baldwin
35818d2e94 Add new ktrace records for the start and end of VM faults. This gives
a pair of records similar to syscall entry and return that a user can
use to determine how long page faults take.  The new ktrace records are
enabled via the 'p' trace type, and are enabled in the default set of
trace points.

Reviewed by:	kib
MFC after:	2 weeks
2012-04-05 17:13:14 +00:00
Andriy Gapon
70542ee01f zfs_ioctl: no need for ddi_copyin/out here because sys_ioctl handles that
On FreeBSD the direct ioctl argument is automatically copied in/out
as necesary by the kernel ioctl entry point.

PR:		kern/164445
Submitted by:	Luis Garces-Erice <lge@ieee.org>
Tested by:	Attila Nagy <bra@fsn.hu>
MFC after:	5 days
2012-04-05 07:59:59 +00:00
Andrey V. Elsukov
59894e4a44 Fix VIMAGE build. 2012-04-05 04:41:06 +00:00
David Xu
8931e524bf In sem_post, the field _has_waiters is no longer used, because some
application destroys semaphore after sem_wait returns. Just enter
kernel to wake up sleeping threads, only update _has_waiters if
it is safe. While here, check if the value exceed SEM_VALUE_MAX and
return EOVERFLOW if this is true.
2012-04-05 03:05:02 +00:00
David Xu
17ce606321 umtx operation UMTX_OP_MUTEX_WAKE has a side-effect that it accesses
a mutex after a thread has unlocked it, it event writes data to the mutex
memory to clear contention bit, there is a race that other threads
can lock it and unlock it, then destroy it, so it should not write
data to the mutex memory if there isn't any waiter.
The new operation UMTX_OP_MUTEX_WAKE2 try to fix the problem. It
requires thread library to clear the lock word entirely, then
call the WAKE2 operation to check if there is any waiter in kernel,
and try to wake up a thread, if necessary, the contention bit is set again
by the operation. This also mitgates the chance that other threads find
the contention bit and try to enter kernel to compete with each other
to wake up sleeping thread, this is unnecessary. With this change, the
mutex owner is no longer holding the mutex until it reaches a point
where kernel umtx queue is locked, it releases the mutex as soon as
possible.
Performance is improved when the mutex is contensted heavily.  On Intel
i3-2310M, the runtime of a benchmark program is reduced from 26.87 seconds
to 2.39 seconds, it even is better than UMTX_OP_MUTEX_WAKE which is
deprecated now. http://people.freebsd.org/~davidxu/bench/mutex_perf.c
2012-04-05 02:24:08 +00:00
Adrian Chadd
88b3d48316 Implement BAR TX.
A BAR frame must be transmitted when an frame in an A-MPDU session fails
to transmit - it's retried too often, or it can't be cloned for
re-transmission.  The BAR frame tells the remote side to advance the
left edge of the block-ack window (BAW) to a new value.

In order to do this:

* TX for that particular node/TID must be paused;
* The existing frames in the hardware queue needs to be completed, whether
  they're TXed successfully or otherwise;
* The new left edge of the BAW is then communicated to the remote side
  via a BAR frame;
* Once the BAR frame has been sucessfully TXed, aggregation can resume;
* If the BAR frame can't be successfully TXed, the aggregation session
  is torn down.

This is a first pass that implements the above.  What needs to be done/
tested:

* What happens during say, a channel reset / stuck beacon _and_ BAR
  TX.  It _should_ be correctly buffered and retried once the
  reset has completed.  But if a bgscan occurs (and they shouldn't,
  grr) the BAR frame will be forcibly failed and the aggregation session
  will be torn down.

  Yes, another reason to disable bgscan until I've figured this out.

* There's way too much locking going on here.  I'm going to do a couple
  of further passes of sanitising and refactoring so the (re) locking
  isn't so heavy.  Right now I'm going for correctness, not speed.

* The BAR TX can fail if the hardware TX queue is full.  Since there's
  no "free" space kept for management frames, a full TX queue (from eg
  an iperf test) can race with your ability to allocate ath_buf/mbufs
  and cause issues.  I'll knock this on the head with a subsequent
  commit.

* I need to do some _much_ more thorough testing in hostap mode to ensure
  that many concurrent traffic streams to different end nodes are correctly
  handled.  I'll find and squish whichever bugs show up here.

But, this is an important step to being able to flip on 802.11n by default.
The last issue (besides bug fixes, of course) is HT frame protection and
I'll address that in a subsequent commit.
2012-04-04 23:45:15 +00:00
Adrian Chadd
084c471979 Track and optionally log the actual sync interrupt cause.
These are involved in tracking host interface issues (ie, PCI/PCIe/AHB
interface.)
2012-04-04 22:51:50 +00:00
Adrian Chadd
d6b2002327 Disable the HWQ contents upon a TX queue reset, rather than a TX queue flush.
This is designed to assist in figuring out what the hardware state is
when something like a queue hang has occured.
2012-04-04 22:24:11 +00:00
Adrian Chadd
d743debcbf Now that I've fixed the BAW TX hangs, disable this verbose debugging
again.
2012-04-04 22:22:50 +00:00
Jung-uk Kim
4db9b6c3c6 Save and restore VGA display memory between suspend and resume. 2012-04-04 22:02:54 +00:00
Adrian Chadd
33d340324a Correctly handle AR_MoreAggr when assembling multi-descriptor final frames.
Linux ath9k doesn't have this issue as it doesn't try queuing multi-
descriptor frames to the hardware.

Before, I was only setting the first and last descriptor in the final
frame correctly - and that was done by accident. The first descriptor in
the last sub-frame was being correctly updated by ath_tx_setds_11n();
the last descriptor in the last sub-frame was being correctly updated
by ath_buf_set_rate(). But both of those are "incorrect".

The correct behaviour is:

* AR_IsAggr is set for all descriptors for all subframes in an aggregate.
* AR_MoreAggr is set for all descriptors for all non-final sub-frames
  in an aggregate.

Ie, all descriptors in the last sub-frame of an aggregate must have this
field set to 0.

I still need to do a couple of extra passes to ensure the pad delimiter
field is being correctly handled in all descriptors in the last sub-frame.
2012-04-04 21:49:49 +00:00
Jung-uk Kim
4c7a7f266f Do not copy VESA state buffer if the VBE call has failed for any reason.
Do not unnecessarily clear the state buffer before calling the function.
2012-04-04 21:38:26 +00:00
John Baldwin
6267007aa6 Disable INET6 support in modules when building the LINT-NOINET6 kernel.
Reviewed by:	bz
MFC after:	1 week
2012-04-04 21:31:20 +00:00
Jung-uk Kim
a3ad2822c4 Remove a useless warning. The mode information is unused for very long time
and this function may be used with VESA mode since r232069.
2012-04-04 21:19:55 +00:00
Marius Strobl
26a93551be - Const'ify the device lookup-table.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.
- Enable support for flow control.
  Tested by: yongari

MFC after:	1 week
2012-04-04 21:09:02 +00:00
Adrian Chadd
2fe1131c7b Add a threadid to the ah_decode API.
This adds the current thread ID to each logged register and mark entry,
allowing for easier debugging of concurrent/overlapping NIC operations.
2012-04-04 20:46:20 +00:00
Marius Strobl
bb16310a44 Refine r233827; as it turns out, controllers with a device ID of 0x0059
can be upgraded to MegaRAID mode, in which case mfi(4) should attach to
these based on the sub-vendor and -device ID instead (not currently done).
Therefore, let mpt_pci_probe() return BUS_PROBE_LOW_PRIORITY.
While it, let mpt_pci_probe() return BUS_PROBE_DEFAULT instead of 0 in
the default case.

MFC after:	3 days
2012-04-04 20:42:45 +00:00
Adrian Chadd
7961e32527 Disable a specific Merlin hardware workaround which may cause hangs on some
PCIe controllers.

Obtained from:	Atheros / Linux
2012-04-04 20:42:32 +00:00
Jung-uk Kim
3df9a2bf07 - Do not include machine/atomic.h. It is no longer necessary since r233768.
- Remove bogus "atomic" macros and a read-only variable from softc.

Reviewed by:	ambrisko
2012-04-04 16:15:40 +00:00
Jaakko Heinonen
63dfd849a1 Add a check for unsupported file flags to ufs_setattr().
Discussed with:	bde
MFC after:	2 weeks
2012-04-04 14:50:21 +00:00
Gleb Smirnoff
07b6b55dce Merge from OpenBSD:
revision 1.173
  date: 2011/11/09 12:36:03;  author: camield;  state: Exp;  lines: +11 -12
  State expire time is a baseline time ("last active") for expiry
  calculations, and does _not_ denote the time when to expire.  So
  it should never be added to (set into the future).

  Try to reconstruct it with an educated guess on state import and
  just set it to the current time on state updates.

  This fixes a problem on pfsync listeners where the expiry time
  could be double the expected value and cause a lot more states
  to linger.
2012-04-04 14:47:59 +00:00
John Baldwin
20b5d3bf40 Add descriptions after the 'device' line for several NICs to match the
existing style.
2012-04-04 13:49:22 +00:00
John Baldwin
8b39d094aa Fix build on i386. 2012-04-04 11:55:20 +00:00
Navdeep Parhar
60a305887a - Remove redundant call to pr_ctloutput from code that handles SO_SETFIB.
- Add a check for errors during copyin while here.

Reviewed by:	julian, bz
MFC after:	2 weeks
2012-04-03 18:38:00 +00:00
Gleb Smirnoff
64484cf630 Since pf 4.5 import pf(4) has a mechanism to defer
forwarding a packet, that creates state, until
pfsync(4) peer acks state addition (or 10 msec
timeout passes).

This is needed for active-active CARP configurations,
which are poorly supported in FreeBSD and arguably
a good idea at all.

Unfortunately by the time of import this feature in
OpenBSD was turned on, and did not have a switch to
turn it off. This leaked to FreeBSD.

This change make it possible to turn this feature
off via ioctl() and turns it off by default.

Obtained from:	OpenBSD
2012-04-03 18:09:20 +00:00
Bernhard Schmidt
a2a4a2aa53 Add basic HT channel setup to ieee80211_init_channels(), this will be
used by at least ral(4).

Reviewed by:	ray
2012-04-03 17:48:42 +00:00
Marius Strobl
6fe8be540f Fix probing of SAS1068E with a device ID of 0x0059 after r232411.
Reported by:	infofarmer

MFC after:	3 days
2012-04-03 08:28:43 +00:00
Kirk McKusick
23d6e518da A file cannot be deallocated until its last name has been removed
and it is no longer referenced by a user process. The inode for a
file whose name has been removed, but is still referenced at the
time of a crash will still be allocated in the filesystem, but will
have no references (e.g., they will have no names referencing them
from any directory).

With traditional soft updates these unreferenced inodes will be
found and reclaimed when the background fsck is run. When using
journaled soft updates, the kernel must keep track of these inodes
so that it can find and reclaim them during the cleanup process.
Their existence cannot be stored in the journal as the journal only
handles short-term events, and they may persist for days. So, they
are tracked by keeping them in a linked list whose head pointer is
stored in the superblock. The journal tracks them only until their
linked list pointers have been commited to disk. Part of the cleanup
process involves traversing the list of unreferenced inodes and
reclaiming them.

This bug was triggered when confusion arose in the commit steps
of keeping the unreferenced-inode linked list coherent on disk.
Notably, a race between the link() system call adding a link-count
to a file and the unlink() system call removing a link-count to
the file. Here if the unlink() ran after link() had looked up
the file but before link() had incremented the link-count of the
file, the file's link-count would drop to zero before the link()
incremented it back up to one. If the file was referenced by a
user process, the first transition through zero made it appear
that it should be added to the unreferenced-inode list when in
fact it should not have been added. If the new name created by
link() was deleted within a few seconds (with the file still
referenced by a user process) it would legitimately be a candidate
for addition to the unreferenced-inode list. The result was that
there were two attempts to add the same inode to the unreferenced-inode
list which scrambled the unreferenced-inode list's pointers leading
to a panic. The fix is to detect and avoid the false attempt at
adding it to the unreferenced-inode list by having the link()
system call check to see if the link count is zero before it
increments it. If it is, the link() fails with ENOENT (showing that
it has failed the link()/unlink() race).

While tracking down this bug, we have added additional assertions
to detect the problem sooner and also simplified some of the code.

Reported by:      Kirk Russell
Fix submitted by: Jeff Roberson
Tested by:        Peter Holm
PR:               kern/159971
MFC (to 9 only):  2 weeks
2012-04-02 21:58:37 +00:00
Konstantin Belousov
5085ecb75a When process exists, not only the children shall be reparented to
init, but also the orphans shall be removed from the orphan list,
because the list header is destroyed.

Reported and tested by:	pho
MFC after:	3 days
2012-04-02 19:35:36 +00:00
Konstantin Belousov
2e39e24f64 Add helper function to remove the process from the orphans list and
use it instead of inlined code.

Tested by:	pho
MFC after:	3 days
2012-04-02 19:34:56 +00:00
Doug Ambrisko
7e4dd9e112 Move struct megasas_sge from mfi_ioctl.h to mfivar.h so we can
remove including machine/bus.h.  Add some more mfi_ prefixes to
avoid name space pollution.

This should address the last tinderbox issues.
2012-04-02 19:13:02 +00:00
John Baldwin
b867b16dc9 Further tweak the changes made in r233709. The kernel doesn't permit
sleeping from a swi handler (even though in this case it would be ok), so
switch the refill and scanning SWI handlers to being tasks on a fast
taskqueue.  Also, only schedule the refill task for a CMCI as an MC# can
fire at any time, so it should do the minimal amount of work needed and
avoid opportunities to deadlock before it panics (such as scheduling a
task it won't ever need in practice).  To handle the case of an MC# only
finding recoverable errors (which should never happen), always try to
refill the event free list when the periodic scan executes.

MFC after:	2 weeks
2012-04-02 17:26:21 +00:00
Jaakko Heinonen
fccf286d24 - Use more natural ip->i_flags instead of vap->va_flags in the final
flags check.
- Add a comment for the immutable/append check done after handling of
  the flags.
- Style improvements.

No functional change intended.

Submitted by:	bde
MFC after:	2 weeks
2012-04-02 16:33:21 +00:00
John Baldwin
f2e3bfc074 Make machine check exception logging more readable. On newer Intel systems,
an uncorrected ECC error tends to fire on all CPUs in a package
simultaneously and the current printf hacks are not sufficient to make
the messages legible.  Instead, use the existing mca_lock spinlock to
serialize calls to mca_log() and change the machine check code to panic
directly when an unrecoverable error is encoutered rather than falling
back to a trap_fatal() call in trap() (which adds nearly a screen-full of
logging messages that aren't useful for machine checks).

MFC after:	2 weeks
2012-04-02 15:07:22 +00:00
Jayachandran C.
2323b34a2d Reinstate the XTLB handler for CPU_NLM and CPU_RMI
These platforms set the KX bit even when booted in 32 bit mode. So
the XLTB handler is needed even when __mips_n64 is not defined.
2012-04-02 11:41:33 +00:00
Hans Petter Selasky
6d917491f5 Fix compiler warnings, mostly signed issues,
when USB modules are compiled with WARNS=9.

MFC after:	1 weeks
2012-04-02 10:50:42 +00:00