Commit Graph

149003 Commits

Author SHA1 Message Date
Robert Watson
5ee847d3ac Reimplement and/or implement vnet list locking by replacing a mostly
unused custom mutex/condvar-based sleep locks with two locks: an
rwlock (for non-sleeping use) and sxlock (for sleeping use).  Either
acquired for read is sufficient to stabilize the vnet list, but both
must be acquired for write to modify the list.

Replace previous no-op read locking macros, used in various places
in the stack, with actual locking to prevent race conditions.  Callers
must declare when they may perform unbounded sleeps or not when
selecting how to lock.

Refactor vnet sysinits so that the vnet list and locks are initialized
before kernel modules are linked, as the kernel linker will use them
for modules loaded by the boot loader.

Update various consumers of these KPIs based on whether they may sleep
or not.

Reviewed by:	bz
Approved by:	re (kib)
2009-07-19 14:20:53 +00:00
Sam Leffler
519f677aff Move code that does payload realigment to a new routine, ieee80211_realign,
so it can be reused.  While here rewrite the logic to always use a single mbuf.

Reviewed by:	rpaulo
Approved by:	re (kib)
2009-07-18 20:19:53 +00:00
Bruce M Simpson
b36c89e55f Fix a problem, whereby misbehaving IPv6 applications, which don't include
a valid zone ID or interface identifier in a v6 multicast leave, would
trigger a fairly paranoid KASSERT().

Observed with Boost++ regression tests on ref8.freebsd.org.

Approved by:	re (kib)
2009-07-18 17:38:18 +00:00
Joe Marcus Clarke
f7ce26cda0 Add an entry for etc/pam.d/gdm as this file is no longer required.
Approved by:	re (kib)
2009-07-18 16:33:27 +00:00
Joe Marcus Clarke
8415b7620f Remove gdm as it is no longer needed.
Approved by:	re (kib)
Reminded by:	nork
2009-07-18 16:29:40 +00:00
Ulf Lilleengen
b79cac0f92 - Fix the issue with read access count modification on RAID-5 plexes properly.
If the access counts were not increased and decreased in equal numbers by
  gvinum consumers, the read access count would be inconsistent with the write
  access count. Instead, modify the read access count with the write access
  count directly to prevent any inconsistencies.

Approved by:	re (kib)
2009-07-18 11:12:48 +00:00
Bjoern A. Zeeb
da1b35844b Remove no longer needed #include after removing the legacy
vimage API in r195741.

Reviewed by:	rwatson
Approved by:	re (kib)
2009-07-18 10:36:18 +00:00
Joe Marcus Clarke
10d3ca6e6d Remove this file. It is no longer needed as x11/gdm provides its own
version under /usr/local/etc/pam.d.

Approved by:	re (kib)
2009-07-18 06:08:21 +00:00
Alan Cox
13de722155 An addendum to r195649, "Add support to the virtual memory system for
configuring machine-dependent memory attributes...":

Don't set the memory attribute for a "real" page that is allocated to
a device object in vm_page_alloc().  It is a pointless act, because
the device pager replaces this "real" page with a "fake" page and sets
the memory attribute on that "fake" page.

Eliminate pointless code from pmap_cache_bits() on amd64.

Employ the "Self Snoop" feature supported by some x86 processors to
avoid cache flushes in the pmap.

Approved by:	re (kib)
2009-07-18 01:50:05 +00:00
Alexander Motin
b2da774623 Fix copy-paste bug. Use regular non-polled mode for executing FLUSHCACHE
command on disk close.

Approved by:	re (implicitly)
2009-07-17 21:48:08 +00:00
Navdeep Parhar
d82ccc60d9 Store accurate offset information in CTF data. A large number of
structs had incorrect member offsets, limiting dtrace's usefulness
when working with them.  An example of incorrect info (struct
rtentry) from before this fix:

<1738> STRUCT rtentry (200 bytes)
      rt_nodes type=1731 off=0
      rt_gateway type=849 off=65280 <== WRONG, should be 8 * 96
      rt_flags type=3 off=65344     <== wrong again, and so on..
...

Approved by:	re (kib), gnn (mentor)
MFC after:	2 weeks
2009-07-17 21:15:09 +00:00
Sam Leffler
412c439591 add mesh support
Submitted by:	rpaulo
Approved by:	re (kib)
2009-07-17 21:11:08 +00:00
Konstantin Belousov
49e8c06b45 Implement RTLD_NOLOAD flag for dlopen(3).
Requested and tested by:	jkim
Reviewed by:	kan
Approved by:	re (kensmith)
2009-07-17 19:45:42 +00:00
Rick Macklem
874bb76647 Patch the regular nfs client in a manner analagous to
r195704 for the experimental client. The patch avoids calling vn_lock()
for the case where nfs_nget() has acquired the same vnode as dvp,
since nfs_nget() has already locked the vnode.

Reviewed by:	kib, jhb
Approved by:	re (kensmith), kib (mentor)
2009-07-17 19:38:07 +00:00
Konstantin Belousov
69ca61ba5e Only perform .bss mapping and cleaning operations when segment file size
is not equal to its memory size.

This eliminates unneeded clearing of the text segment that often
happens due to text end not being page-aligned.

For instance,
$ readelf -l /lib/libedit.so.6
Program Headers:
  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
  LOAD           0x000000 0x00000000 0x00000000 0x139e1 0x139e1 R E 0x1000
  LOAD           0x014000 0x00014000 0x00014000 0x00f04 0x00f14 RW  0x1000
  DYNAMIC        0x014cc4 0x00014cc4 0x00014cc4 0x000d0 0x000d0 RW  0x4
$ procstat -v $$ (for /bin/sh)
68585 0x28097000 0x280aa000 r-x    6    0  21  14 CN vn /lib/libedit.so.6
68585 0x280aa000 0x280ab000 r-x    1    0   1   0 CN vn /lib/libedit.so.6 <==
68585 0x280ab000 0x280ac000 rwx    1    0   1   0 CN vn /lib/libedit.so.6
Note the splitted map entry marked by '<=='.

Reviewed by:	kan
Approved by:	re (kensmith)
MFC after:	1 month
2009-07-17 19:32:04 +00:00
Rui Paulo
8b9fde4324 Add IEEE80211_SUPPORT_MESH, following similar change to nanobsd and
other GENERIC kernels.

Approved by:	re (kib)
2009-07-17 18:35:45 +00:00
Jamie Gritton
7afcbc18b3 Remove the interim vimage containers, struct vimage and struct procg,
and the ioctl-based interface that supported them.

Approved by:	re (kib), bz (mentor)
2009-07-17 14:48:21 +00:00
Robert Watson
597df30e62 Import OpenBSM 1.1p1 from vendor branch to 8-CURRENT, populating
contrib/openbsm and a subset also imported into sys/security/audit.
This patch release addresses several minor issues:

- Fixes to AUT_SOCKUNIX token parsing.
- IPv6 support for au_to_me(3).
- Improved robustness in the parsing of audit_control, especially long
  flags/naflags strings and whitespace in all fields.
- Add missing conversion of a number of FreeBSD/Mac OS X errnos to/from BSM
  error number space.

MFC after:	3 weeks
Obtained from:	TrustedBSD Project
Sponsored by:	Apple, Inc.
Approved by:	re (kib)
2009-07-17 14:02:20 +00:00
Robert Watson
5d171016e7 Vendor import of OpenBSM 1.1p1, which incorporates the following changes
since the last imported OpenBSM release:

OpenBSM 1.1p1

- Fixes to AUT_SOCKUNIX token parsing.
- IPv6 support for au_to_me(3).
- Improved robustness in the parsing of audit_control, especially long
  flags/naflags strings and whitespace in all fields.
- Add missing conversion of a number of FreeBSD/Mac OS X errnos to/from BSM
  error number space.

Obtained from:  TrustedBSD Project
Sponsored by:   Apple, Inc.
2009-07-17 12:18:39 +00:00
Robert Watson
1e77c1056a Remove unused VNET_SET() and related macros; only VNET_GET() is
ever actually used.  Rename VNET_GET() to VNET() to shorten
variable references.

Discussed with:	bz, julian
Reviewed by:	bz
Approved by:	re (kensmith, kib)
2009-07-16 21:13:04 +00:00
Doug Barton
10dc5fab2e Fix several instances of spaces before commas, and one of a space
before a ).

PR:		docs/136723
Submitted by:	Ulrich Sporlein <uqs@spoerlein.net>
Approved by:	re (kib)
2009-07-16 20:29:36 +00:00
Ken Smith
8222d1e2f7 Correct the name of the Mongolian Documentation package.
Approved by:	re (kib)
2009-07-16 20:19:36 +00:00
Alexander Motin
d96aeec8ff Limit IOCATAREQUEST ioctl data size to controller's maximum I/O size.
It fixes kernel panic when requested size is too large (0xffffffff),

PR:             kern/136726
Approved by:    re (kib)
MFC after:      2 weeks
2009-07-16 19:48:39 +00:00
Ken Smith
e57e15a182 Prepare for the 8.0-BETA2 builds.
Approved by:	re (implicit)
2009-07-15 17:29:05 +00:00
Andriy Gapon
b064b6d1cd dtrace_gethrtime: improve scaling of TSC ticks to nanoseconds
Currently dtrace_gethrtime uses formula similar to the following for
converting TSC ticks to nanoseconds:
rdtsc() * 10^9 / tsc_freq
The dividend overflows 64-bit type and wraps-around every 2^64/10^9 =
18446744073 ticks which is just a few seconds on modern machines.

Now we instead use precalculated scaling factor of
10^9*2^N/tsc_freq < 2^32 and perform TSC value multiplication separately
for each 32-bit half.  This allows to avoid overflow of the dividend
described above.
The idea is taken from OpenSolaris.
This has an added feature of always scaling TSC with invariant value
regardless of TSC frequency changes. Thus the timestamps will not be
accurate if TSC actually changes, but they are always proportional to
TSC ticks and thus monotonic. This should be much better than current
formula which produces wildly different non-monotonic results on when
tsc_freq changes.

Also drop write-only 'cp' variable from amd64 dtrace_gethrtime_init()
to make it identical to the i386 twin.

PR:		kern/127441
Tested by:	Thomas Backman <serenity@exscape.org>
Reviewed by:	jhb
Discussed with:	current@, bde, gnn
Silence from:	jb
Approved by:	re (gnn)
MFC after:	1 week
2009-07-15 17:07:39 +00:00
Sam Leffler
649874e159 correct IEEE80211_RADIOTAP_XCHANNEL to match system
Submitted by:	Guy Harris
Approved by:	re (kib)
2009-07-15 13:50:06 +00:00
Robert Watson
cd2b95a237 r195699 introduced an assertion regarding when progbits data in kernel
modules was present, which turns out to be false in some situations.
Back out the assertion.

Reported by:	Luiz Otavio O Souza <lists.br at gmail.com>,
		Florian Smeets <flo at kasimir.com>
Approved by:	re (kensmith) (implicit)
2009-07-15 09:19:01 +00:00
Robert Watson
c1e200ffcc Add missing license line for vnet.h, correct white space nit.
Approved by:	re (kensmith) (implicit)
2009-07-15 00:56:15 +00:00
Rick Macklem
405229f913 Fix the experimental nfs client so that it does not cause a
"share->excl" panic when doing a lookup of dotdot at the root
of a server's file system. The patch avoids calling vn_lock()
for that case, since nfscl_nget() has already acquired a lock
for the vnode.

Approved by:	re (kensmith), kib (mentor)
2009-07-14 23:10:23 +00:00
Konstantin Belousov
b35687df13 Use PBDRY flag for msleep(9) in NFS and NLM when sleeping thread owns
kernel resources that block other threads, like vnode locks. The SIGSTOP
sent to such thread (process, rather) shall not stop it until thread
releases the resources.

Tested by:	pho
Reviewed by:	jhb
Approved by:	re (kensmith)
2009-07-14 22:54:29 +00:00
Konstantin Belousov
f33a947b56 Add new msleep(9) flag PBDY that shall be specified together with
PCATCH, to indicate that thread shall not be stopped upon receipt of
SIGSTOP until it reaches the kernel->usermode boundary.

Also change thread_single(SINGLE_NO_EXIT) to only stop threads at
the user boundary unconditionally.

Tested by:	pho
Reviewed by:	jhb
Approved by:	re (kensmith)
2009-07-14 22:52:46 +00:00
Konstantin Belousov
79799053a7 Move the repeated code to calculate the number of the threads in the
process that still need to be suspended or exited from thread_single
into the new function calc_remaining().

Tested by:	pho
Reviewed by:	jhb
Approved by:	re (kensmith)
2009-07-14 22:51:31 +00:00
Konstantin Belousov
c8167830f9 When wakeup(9) is going to notify swapper, assert that wait channel is not
equal to &proc0. It shall be not, since proc0 stack is not swappable, and
kick_proc0() is wakeup(&proc0).

Reviewed by:	jhb
Approved by:	re (kensmith)
2009-07-14 22:50:41 +00:00
Robert Watson
eddfbb763d Build on Jeff Roberson's linker-set based dynamic per-CPU allocator
(DPCPU), as suggested by Peter Wemm, and implement a new per-virtual
network stack memory allocator.  Modify vnet to use the allocator
instead of monolithic global container structures (vinet, ...).  This
change solves many binary compatibility problems associated with
VIMAGE, and restores ELF symbols for virtualized global variables.

Each virtualized global variable exists as a "reference copy", and also
once per virtual network stack.  Virtualized global variables are
tagged at compile-time, placing the in a special linker set, which is
loaded into a contiguous region of kernel memory.  Virtualized global
variables in the base kernel are linked as normal, but those in modules
are copied and relocated to a reserved portion of the kernel's vnet
region with the help of a the kernel linker.

Virtualized global variables exist in per-vnet memory set up when the
network stack instance is created, and are initialized statically from
the reference copy.  Run-time access occurs via an accessor macro, which
converts from the current vnet and requested symbol to a per-vnet
address.  When "options VIMAGE" is not compiled into the kernel, normal
global ELF symbols will be used instead and indirection is avoided.

This change restores static initialization for network stack global
variables, restores support for non-global symbols and types, eliminates
the need for many subsystem constructors, eliminates large per-subsystem
structures that caused many binary compatibility issues both for
monitoring applications (netstat) and kernel modules, removes the
per-function INIT_VNET_*() macros throughout the stack, eliminates the
need for vnet_symmap ksym(2) munging, and eliminates duplicate
definitions of virtualized globals under VIMAGE_GLOBALS.

Bump __FreeBSD_version and update UPDATING.

Portions submitted by:  bz
Reviewed by:            bz, zec
Discussed with:         gnn, jamie, jeff, jhb, julian, sam
Suggested by:           peter
Approved by:            re (kensmith)
2009-07-14 22:48:30 +00:00
Alexander Kabaev
2286fe7635 Second attempt at eliminating .text relocations in shared libraries
compiled with stack protector.

Use libssp_nonshared library to pull __stack_chk_fail_local symbol into
each library that needs it instead of pulling it from libc. GCC
generates local calls to this function which result in absolute
relocations put into position-independent code segment, making dynamic
loader do extra work every time given shared library is being relocated
and making affected text pages non-shareable.

Reviewed by:        kib
Approved by:        re (kib)
2009-07-14 21:19:13 +00:00
John Baldwin
0fe0ed8bf8 - Change mmap() to fail requests with EINVAL that pass a length of 0. This
behavior is mandated by POSIX.
- Do not fail requests that pass a length greater than SSIZE_MAX
  (such as > 2GB on 32-bit platforms).  The 'len' parameter is actually
  an unsigned 'size_t' so negative values don't really make sense.

Submitted by:	Alexander Best  alexbestms at math.uni-muenster.de
Reviewed by:	alc
Approved by:	re (kib)
MFC after:	1 week
2009-07-14 19:45:36 +00:00
Edward Tomasz Napierala
ec71a417a8 Add missing MLINKS for acl_{get,set}_link_fd(3).
Approved by:	re (kib)
2009-07-14 19:37:53 +00:00
Bjoern A. Zeeb
6c19585325 Re-add opt_inet.h, as we did in r193862 and lost yet again.
Approved by:	re (kib)
2009-07-14 19:32:36 +00:00
Alexander Motin
5487ee5507 Disable MSI by default for nVidia MCP55 chipset.
It is reported to be broken in the same way as MCP51.

PR:		kern/136429
Approved by:	re (kib)
2009-07-14 19:18:31 +00:00
Ariff Abdullah
df41a638f7 - Do aggresive saturation on various polynomial interpolators.
This dramatically pushing 99.9% interpolations and quantizations
  error _below_ -180dB on 32bit dynamic range, resulting extremely
  high quality conversion.
- Use BSPLINE interpolator for filter oversampling factor greater or
  equal than 64 (log2 6).

Approved by:	re (kib)
2009-07-14 18:53:34 +00:00
Ed Maste
c25ebae365 Change xpt_scan_bus to scsi_scan_bus and xpt_scan_lun to scsi_scan_lun
in comments and printfs to match new function names after refacoring.

Approved by:	re
2009-07-14 18:44:17 +00:00
Ed Maste
399831bce6 Fix leaks in probestart, probedone, and scsi_scan_bus. Also free
page_list using the matching malloc type for the allocation.

Approved by:	re
Reviewed by:	scottl [1]
MFC after:	1 week

[1] Original patch was against xpt_cam.c, prior to the cam refactoring.
2009-07-14 17:26:37 +00:00
Sam Leffler
0b73e40339 Updates, mostly to add 802.11s support:
o add missing Status and Reason codes
o parse/display Action frames
o parse/display Mesh data frames
o parse/display BA frames

Reviewed by:	rpaulo
Approved by:	re (kib)
2009-07-14 17:11:06 +00:00
Lawrence Stewart
5f1ff8136a Fix a buglet that slipped into r195654. My buildworld/buildkernel sanity
check missed this because cxgb's TOM is currently commented out of the build
system.

Submitted by:	Navdeep Parhar <np at FreeBSD dot org>
Approved by:	re (kensmith), kensmith (mentor temporarily unavailable)
2009-07-14 11:53:21 +00:00
Ed Schouten
523a386d23 Make mklocale work again, now that fwrite()'s return codes are different.
Submitted by:	Navdeep Parhar <nparhar gmail com>
Approved by:	re (kib)
2009-07-14 09:19:33 +00:00
Tai-hwa Liang
3d22427cff Adding hardware ID for RTL810x PCIe found on HP Pavilion DV2-1022AX.
Reviewed by:	yongari
Approved by:	re (kib, kensmith)
2009-07-14 04:35:13 +00:00
Jung-uk Kim
e8c4d3e407 Match PCI Express root bridge _HID directly instead of
relying on _CID.

Reviewed by:	jhb
Approved by:	re (kib)
2009-07-13 21:36:31 +00:00
Alexander Motin
3ccda2f312 Fix copy-paste bug, enabling SIM PMP support, when it was not really found.
Approved by:	re (implicitly)
2009-07-13 21:21:30 +00:00
Scott Long
de985f6174 Revert the CISS driver to 64K i/o, the previous change was in error and
missing a lot of needed infrastructure.

Approved by:	re
2009-07-13 20:19:29 +00:00
Joel Dahl
6ae6067c0f Fix a few language nits.
Submitted by:	Ben Kaduk <minimarmot@gmail.com>
Approved by:	re (blanket)
2009-07-13 18:55:46 +00:00