Commit Graph

168563 Commits

Author SHA1 Message Date
Justin T. Gibbs
443cc4d407 Fix a bug in the calculation of the maximum I/O request size.
The previous code did not limit the I/O request size based on
the maximum number of segments supported by the back-end.  In
current practice, since the only back-end supporting chained
requests is the FreeBSD implementation, this limit was never
exceeded.

sys/dev/xen/blkfront/block.h:
	Add two macros, XBF_SEGS_TO_SIZE() and XBF_SIZE_TO_SEGS(),
	to centralize the logic of reserving a segment to deal with
	non-page-aligned I/Os.

sys/dev/xen/blkfront/blkfront.c:
	o When negotiating transfer parameters, limit the
	  max_request_size we use and publish, if it is greater
	  than the maximum, unaligned, I/O we can support with
	  the number of segments advertised by the backend.
	o Don't unilaterally reduce the I/O size published to
	  the disk layer by a single page.  max_request_size
	  is already properly limited in the transfer parameter
	  negotiation code.
	o Fix typos in printf strings:
		"max_requests_segments" -> "max_request_segments"
		"specificed" -> "specified"

MFC after:	1 day
2012-02-16 21:58:47 +00:00
Ulrich Spörlein
f7e784d50b Fix 'make depend'. 2012-02-16 21:57:50 +00:00
Justin T. Gibbs
e6fe91b5e4 Fix typo in a printf string: "specificed" -> "specified".
MFC after:	1 day
2012-02-16 21:49:28 +00:00
Justin T. Gibbs
8161f482d1 Fix "_" vs. "-" typo in a comment. No functional changes. 2012-02-16 21:47:17 +00:00
Hans Petter Selasky
79fcfd2e54 Add support for filtering USB devices and USB endpoints to the usbdump utility
when making software USB traces.

MFC after: 1 week
2012-02-16 21:18:36 +00:00
Warner Losh
e517a11c27 Fix comma splice, can't ambiguity and quoting.
Submitted by:	bde@
MFC after:	2 weeks
2012-02-16 21:04:47 +00:00
Gleb Smirnoff
687adb703d Refactor the name hash and the ID hash, that are used to address nodes:
- Make hash sizes growable, to satisfy users running large mpd
  installations, having thousands of nodes.
- NG_NAMEHASH() proved to give a very bad distribution in real life
  name sets, while generic hash32_str(name, HASHINIT) proved to give
  an even one, so you the latter for name hash.
- Do not store unnamed nodes in slot 0 of name hash, no reason for that.
- Use the ID hash in cases when we need to run through all nodes: the
  NGM_LISTNODES command and in the vnet_netgraph_uninit().
- Implement NGM_LISTNODES and NGM_LISTNAMES as separate code, the former
  iterates through the ID hash, and the latter through the name hash.
- Keep count of all nodes and of named nodes, so that we don't need
  to count nodes in NGM_LISTNODES and NGM_LISTNAMES. The counters are
  also used to estimate whether we need to grow hashes.
- Close a race between two threads running ng_name_node() assigning same
  name to different nodes.
2012-02-16 19:10:01 +00:00
Gleb Smirnoff
320d00eee8 Specify correct loading order for core of netgraph(4). 2012-02-16 18:54:44 +00:00
Gleb Smirnoff
04fdc6c689 Supply correct "how" argument to the uma_zcreate(). 2012-02-16 18:51:12 +00:00
Adrian Chadd
7a5baabe06 Add a module dependency on wlan.
Submitted by:	monthadar@gmail.com
2012-02-16 16:48:12 +00:00
Gleb Smirnoff
8338a34a82 In ng_getsockaddr() allocate memory prior to obtaining lock.
Reported & tested by:	Mykola Dzham <i levsha.me>
2012-02-16 14:44:52 +00:00
Sergey Kandaurov
262eab04a6 delete-old does not have delete-old-libs dependency.
Reflect this in the comment.

PR:		conf/163993
Submitted by:	Eugen Konkov <kes-kes at yandex ru>
MFC after:	3 days
2012-02-16 14:08:14 +00:00
Alan Cox
a649296959 When vm_mmap() is used to map a vm object into a kernel vm_map, it
makes no sense to check the size of the kernel vm_map against the
user-level resource limits for the calling process.

Reviewed by:	kib
2012-02-16 06:45:51 +00:00
Eitan Adler
c1cb99c965 Fix warning when compiling with gcc46
Approved by:	cperciva
MFC after:	3 days
2012-02-16 05:17:06 +00:00
Eitan Adler
4001564661 Removed unused code: fixes compiler warning with CC=gcc46
error: parameter 'fd' set but not used

Approved by:	cperciva
MFC after:	1 week
2012-02-16 05:17:01 +00:00
Eitan Adler
097cd85002 Don't extract the n_type value from the elf header, since it is never used
Fix warning when compiling with gcc46:
	variable 'type' set but not used

Approved by:	cperciva
MFC after:	3 days
2012-02-16 05:16:55 +00:00
Eitan Adler
f17a6f1b17 Add a timestamp to the msgbuf output in order to determine when when
messages were printed.

This can be enabled with the kern.msgbuf_show_timestamp sysctl

PR:		kern/161553
Reviewed by:	avg
Submitted by:	Arnaud Lacombe <lacombar@gmail.com>
Approved by:	cperciva
MFC after:	1 month
2012-02-16 05:11:35 +00:00
Eitan Adler
9d4261b795 Add err(3) to strerror(3) SEE ALSO section
PR:		docs/164940
Submitted by:	Niclas Zeising <zeising@daemonic.se>
Approved by:	cperciva
MFC after:	3 days
2012-02-16 05:06:07 +00:00
Nathan Whitehorn
c48e7eac15 Make sure to synchronize icache for the newly loaded loader. Not an issue
on most systems, when the relevant icache lines are not full.

MFC after:	2 weeks
2012-02-16 03:27:38 +00:00
Rick Macklem
13b2772f8e Delete a couple of out of date comments that are no longer true in
the new NFS client.

Requested by:	bde
MFC after:	1 week
2012-02-16 02:19:53 +00:00
Jung-uk Kim
5437485bdb Import ACPICA 20120215. 2012-02-16 00:24:10 +00:00
Jung-uk Kim
4ba4ebd0a8 Clean up RFLAG and CR3 register handling and nearby comments. For BSP, use
spinlock_enter()/spinlock_exit() to save/restore RFLAGS.  We know interrupt
is disabled when returning from S3.  For AP, we do not have to save/restore
it because IRET will do it for us any way.  Do not save CR3 locally because
savectx() does it and BSP does not have to switch to kernel map for amd64.
Change contigmalloc(9) flag while I am in the neighborhood.
2012-02-15 23:33:22 +00:00
Luigi Rizzo
5644ccec61 (This commit only touches code within the DEV_NETMAP blocks)
Introduce some functions to map NIC ring indexes into netmap ring
indexes and vice versa. This way we can implement the bound
checks only in one place (and hopefully in a correct way).

On passing, make the code and comments more uniform across the
various drivers.
2012-02-15 23:13:29 +00:00
Jung-uk Kim
a7d022e777 Set up an event handler to turn off speaker if user requested it. Speaker
will stop beeping after all device drivers are resumed.  Use proper API to
"acquire" and "release" PIC timer2 for consistency and correctness.
2012-02-15 22:49:25 +00:00
Jung-uk Kim
b1dd90550d Make ACPI resume beeper less cryptic. Set PIC timer2 mode properly. 2012-02-15 22:10:33 +00:00
Jung-uk Kim
ceb9fa549f Some BIOSes are known for corrupting low 64KB between suspend and resume.
Mask off the first 16 pages unless we appear to be running in a VM.  This
address may be overridden by 'hw.physmem.start' tunable from loader.
Note Linux used to have a BIOS quirk table for this issue but it seems they
made it default recently.
2012-02-15 21:32:05 +00:00
Warner Losh
c693bd2ff6 Wordsmith the can't find kernel error message, and suggest which
variable to set to override.
2012-02-15 21:20:58 +00:00
Luigi Rizzo
4b0a800988 reduce the differences between these three files.
The three drivers (em, lem and igb) are extremely similar, too bad
that the structures use different names and we cannot share the code.
2012-02-15 18:59:26 +00:00
Xin LI
601e0f587d Bump .Dd date for previous revision. 2012-02-15 18:34:57 +00:00
Nathan Whitehorn
bc85eb26b3 Improve error handling in smusat(4).
MFC after:	4 days
2012-02-15 16:59:24 +00:00
Bjoern A. Zeeb
d8951c8a2f Fix PAWS (Protect Against Wrapped Sequence numbers) in cases when
hz >> 1000 and thus getting outside the timestamp clock frequenceny of
1ms < x < 1s per tick as mandated by RFC1323, leading to connection
resets on idle connections.

Always use a granularity of 1ms using getmicrouptime() making all but
relevant callouts independent of hz.

Use getmicrouptime(), not getmicrotime() as the latter may make a jump
possibly breaking TCP nfsroot mounts having our timestamps move forward
for more than 24.8 days in a second without having been idle for that
long.

PR:		kern/61404
Reviewed by:	jhb, mav, rrs
Discussed with:	silby, lstewart
Sponsored by:	Sandvine Incorporated (originally in 2011)
MFC after:	6 weeks
2012-02-15 16:09:56 +00:00
Gleb Smirnoff
b99a737923 Fix includes list.
Submitted by:	bde
2012-02-15 15:54:57 +00:00
Gleb Smirnoff
923d1d7814 Trim double empty lines. 2012-02-15 15:06:03 +00:00
Gleb Smirnoff
3eb05c287a Remove testing stuff, reducing kernel memory footprint by 1 Kb.
Anyway, when we are building a LINT kernel, all these macros
are tested via nodes.
2012-02-15 14:56:18 +00:00
Gleb Smirnoff
c3189b3fb4 In ng_bypass() add more protection against potential race
with ng_rmnode() and its followers.
2012-02-15 14:29:23 +00:00
Gleb Smirnoff
19afcd9829 style(9): sort includes. 2012-02-15 14:26:50 +00:00
Andrey V. Elsukov
3bcf7d7191 Add additional check to EBR probe and create methods:
don't try probe and create  EBR scheme when parent partition type
is not "ebr". This fixes error messages about corrupted EBR for
some partitions where is actually another partition scheme.

NOTE: if you have EBR on the partition with different than "ebr"
(0x05) type, then you will lost access to partitions until it will be
changed.

MFC after:	2 weeks
2012-02-15 10:33:29 +00:00
Andrey V. Elsukov
0d8bc07eba Add PART::type attribute handler. It returns partition type as string.
MFC after:	2 weeks
2012-02-15 10:02:19 +00:00
Justin T. Gibbs
a470da8388 Limit the ST3146855LW U320 drive to 55 tags to avoid command timeouts
under load.

Submitted by:	Gelson Borsoi
MFC after:	1 day
2012-02-15 07:30:23 +00:00
Justin T. Gibbs
8b8bfa3567 Enhance documentation, improve interoperability, and fix defects in
FreeBSD's front and back Xen blkif interface drivers.

sys/dev/xen/blkfront/block.h:
sys/dev/xen/blkfront/blkfront.c:
sys/dev/xen/blkback/blkback.c:
	Replace FreeBSD specific multi-page ring impelementation with
	support for both the Citrix and Amazon/RedHat versions of this
	extension.

sys/dev/xen/blkfront/blkfront.c:
	o Add a per-instance sysctl tree that exposes all negotiated
	  transport parameters (ring pages, max number of requests,
	  max request size, max number of segments).
	o In blkfront_vdevice_to_unit() add a missing return statement
	  so that we properly identify the unit number for high numbered
	  xvd devices.

sys/dev/xen/blkback/blkback.c:
	o Add static dtrace probes for several events in this driver.
	o Defer connection shutdown processing until the front-end
	  enters the closed state.  This avoids prematurely tearing
	  down the connection when buggy front-ends transition to the
	  closing state, even though the device is open and they
	  veto the close request from the tool stack.
	o Add nodes for maximum request size and the number of active
	  ring pages to the exising, per-instance, sysctl tree.
	o Miscelaneous style cleanup.

sys/xen/interface/io/blkif.h:
	o Add extensive documentation of the XenStore nodes used to
	  implement the blkif interface.
	o Document the startup sequence between a front and back driver.
	o Add structures and documenatation for the "discard" feature
	  (AKA Trim).
	o Cleanup some definitions related to FreeBSD's request
	  number/size/segment-limit extension.

sys/dev/xen/blkfront/blkfront.c:
sys/dev/xen/blkback/blkback.c:
sys/xen/xenbus/xenbusvar.h:
	Add the convenience function xenbus_get_otherend_state() and
	use it to simplify some logic in both block-front and block-back.

MFC after:	1 day
2012-02-15 06:45:49 +00:00
David Xu
03a67b59f8 Add notes about sigev_notify_kevent_flags introduced in revision 230857
which enables thread-friendly polling on same fd for AIO events.

Reviewed by:	delphij
2012-02-15 02:59:17 +00:00
Kevin Lo
6e807fa629 - Remove some unnecessary cast when assigning NULL to a handle.
- Silent a warning
2012-02-15 02:01:24 +00:00
Kenneth D. Merry
ecef54656d Set the max_lun field of the path inquiry CCB to 8.
This allows LUNs greater than 0 to be probed.  It can be increased later if
need be.

This brings back SVN rev 224973, which was inadvertently removed with the
import of the LSI driver.

Reported by:	dwhite
MFC after:	3 days
2012-02-14 22:27:43 +00:00
Dimitry Andric
b74cf6dcf1 Revert r231673 and r231682 for now, until we can run a full make
universe with them.  Sorry for the breakage.

Pointy hat to:	     me and brooks
2012-02-14 21:48:46 +00:00
Hans Petter Selasky
a40c00a535 Add new USB device ID.
MFC after:	3 days
PR:		usb/165154
2012-02-14 21:36:55 +00:00
Robert Watson
79f9811409 When initialising the CP0 status register during boot on 64-bit MIPS,
set all three of the kernel, supervisor, and user-mode 64-bit mode
flags.  While FreeBSD does not currently use the supervisor ring (and
hence this is effectively a NOP on most systems), doing this avoids
triggering an exception on 64-bit MIPS CPUs that don't support 32-bit
compatibility mode, and therefore don't allow clearing the SX bit.

Reviewed by:	gonzo
MFC after:	3 days
Sponsored by:	DARPA, SRI International
2012-02-14 20:34:25 +00:00
Adrian Chadd
3c7c299133 Add some missing radar config parameters. 2012-02-14 20:08:50 +00:00
Adrian Chadd
5a86e1369c Fix the usefir128 config bit flipping. 2012-02-14 20:06:28 +00:00
Adrian Chadd
cfa5ef068f Improve the radar register config API.
* Fix the "enabled" flag to actually reflect whether radar detection is
  enabled or not.
* Add flags for the relstep/relpwr checks.
2012-02-14 20:05:28 +00:00
George V. Neville-Neil
77b7d3b2e6 Remove UCP from the list of counters 2012-02-14 18:57:10 +00:00