if netgraph reported error while delivering to destination.
Reset 'next send' counter to the last requested by peer on ack timeout
to resend all subsequest packets after lost one again without additional hints.
Solaris and AIX.
fcntl(fd, F_DUP2FD, arg) and dup2(fd, arg) are functionnaly equivalent.
Document it.
Add some regression tests (identical to the dup2(2) regression tests).
PR: 120233
Submitted by: Jukka Ukkonen
Approved by: rwaston (mentor)
MFC after: 1 month
HPT drivers would sometimes test the value of a preprocessor definition but
not always make sure that the definition existed in the first place, leading
to warnings on newer compilers. I blindly assumed the same with this driver,
and it turned out to be wrong and to enable some code that doesn't work.
process lock leading to a hang. This bug was introduced in
kern_sig.c:1.351, when the call to expand_name() was moved earlier
bit this particular error case was not updated.
It so happens that U-Boot disables the D-cache when booting
an ELF image, so this change makes sure we run with the
D-cache enabled from now on. It shows too...
While here, remove the duplicate definition of the hw.model
sysctl.
variable is set. On my Mac Mini this puts the CPU in NAP mode when
the kernel is idle and, any technical or environmental reasons
aside, avoids that I have to listen to the fan all day :-)
trashing and improve performance.
Remove waitflag argument from ng_ksocket_incoming2(), it means nothing
as function call was queued by netgraph.
Remove node validity check, as node validity guarantied by netgraph.
Update comments.
value at the requested address as a symbol. For example, "ex /S
aio_swake" prints the name of the function currently registered in
via aio_swake hook.
The change as committed differs slightly from the patch in the PR,
as I force the size of the retrieved value (and the automatic
address increment) to be sizeof(void *). This seems to provide
the most useful auto-increment behavior, and defaults using the
default size (4), which is not sizeof(void *) on 64-bit platforms.
MFC after: 3 days
PR: 57976
Submitted by: Dan Strick <strick at covad.net>
for all network interfaces, not just ethernet-like ones.
Upgrade it to a louder WARNING and be explicit that the flag is obsolete.
Support for IFF_NEEDSGIANT will be removed in a few months (see arch@ for
details) and will not appear in 8.0.
Upgrade if_watchdog to a WARNING.
> 0 rather than >= 0, or we will panic when trying to deliver the signal.
MFC after: 3 days
PR: 100802
Submitted by: Valerio Daelli <valerio.daelli at gmail.com>
to flush the TLB instead of hardcoding a size of 33 pages. Apertures of
32MB and 64MB only use a 16 page GATT and an aperture of 128MB only uses
a 32 page GATT, so without this the code could walk off the end of the
pointer and cause a page fault if the next page was unmapped. Also, for
aperture sizes > 128MB, not all of the pages would be read. The Linux
driver has the same bug.
MFC after: 1 week
Tested by: Frédéric PRACA frederic.praca of freebsd-fr.org
hold the newline and nul terminator. Otherwise, there are cases where
garbage may end up in the command history due to a lack of a nul
terminator, or input may end up without room for a newline.
MFC after: 3 days
PR: 119079
Submitted by: Michael Plass <mfp49_freebsd@plass-family.net>
TCP/UDP checksum in driver for short frames. For frames that requires
hardware VLAN tag insertion, the checksum offload trick does not
work due to changes of checksum offset in mbuf after the VLAN tag.
Disable hardware checksum offload for VLAN interface to fix the bug.
Reported by: Christopher Cowart < ccowart AT rescomp DOT berkeley DOT edu >
Tested by: Christopher Cowart < ccowart AT rescomp DOT berkeley DOT edu >
MFC after: 5 days
returns EINVAL. Right now we return 0 or success for invalid commands,
which could be quite problematic in certain conditions.
MFC after: 1 week
Discussed with: rwatson
revision 1.6
date: 2004/08/21 18:50:34; author: alc; state: Exp; lines: +3 -1
Properly free the temporary sf_buf in uiomove_fromphys() if a copyin or
copyout fails.
Obtained from: DragonFlyBSD
Spotted out by: Mark Tinguely
MFC After: 3 days
restrict the utilization of direct pointers to the content of
ip packet. These modifications are functionally nop()s thus
can be merged with no side effects.
- Set M_BCAST|M_MCAST for incoming frames
- Send the frame to a local interface if the bridge returns the mbuf
Submitted by: Eugene Grosbein
Tested by: Boris Kochergin
private to the kernel, some ports define _KERNEL and include this
header. While arguably this is wrong, it's also reality. By having
the MD fields last, architectures that have CPU-specific variations
of PCPU_MD_FIELDS will at least have the MI fields at a constant
offset. Of course, having all MI fields first helps kernel debugging
as well, so this is not a change without some benefits to us.
This change does not result in an ABI breakage, because this header
is not part of the ABI. Recompilation of lsof is required though :-)
used in the kernel only (by virtue of checking for _KERNEL),
ports like lsof (part of gtop) cheat. It sets _KERNEL, but does
not set either AIM or E500. As such, PCPU_MD_FIELDS didn't get
defined and the build broke.
The catch-all is to define PCPU_MD_FIELDS with a dummy integer
when at the end of line we ended up without a definition for it.
the input field from the current cursor location, rather than the end of
the input line, as the cursor may not be at the end of the line.
Otherwise, we may overshoot, overwriting a bit of the previous line and
failing to fully overwrite the current line.
MFC after: 3 days
PR: 119079
Submitted by: Michael Plass <mfp49_freebsd@plass-family.net>
allocator for jumbo frame. Also remove unneeded jlist lock which
is no longer required to protect jumbo buffers.
With these changes jumbo frame performance of nfe(4) was slightly
increased and users should not encounter jumbo buffer allocation
failure anymore.
to avoid terrible unpredicted effects for netgraph operation of their
exhaustion while allocating control messages.
Add separate configurable 512 items limit for data items allocation
for DoS/overload protection.
Discussed with: julian
it's probed first. The PowerPC platform code deals with everything.
As such, probe devices in order of their location in the memory map.
o Refactor the ocpbus_alloc_resource for readability and make sure we
set the RID in the resource as per the new convention.
- Even for the PCI Express host controller we need to use bus 0
for configuration space accesses to devices directly on the
host controller's bus.
- Pass the maximum number of slots to pci_ocp_init() because the
caller knows how many slots the bus has. Previously a PCI or
PCI-X bus underneath a PCI Express host controller would not
be enumerated properly.
o Pull the interrupt routing logic out of pci_ocp_init() and into
its own function. The logic is not quite right and is expected
to be a bit more complex.
o Fix/add support for PCI domains. The PCI domain is the unit
number as per other PCI host controller drivers. As such, we
can use logical bus numbers again and don't have to guarantee
globally unique bus numbers. Remove pci_ocp_busnr. Return the
highest bus number ito the caller of pci_ocp_init() now that
we don't have a global variable anymore.
o BAR programming fixes:
- Non-type0 headers have at most 1 BAR, not 0.
- First write ~0 to the BAR in question and then read back its
size.
Obtained from: Juniper Networks (mostly)
It is normally initialized by ffs_statfs() after ffs_mount finished.
The extattr autostart code calls the ufs_lookup(), that uses value above
to iterate over the directory blocks, see bmask initialization in the
ufs_lookup() and ufsdirhash. Having the filesystem with root directory
spanning more then one block would result in reading a random kernel
memory.
PR: kern/120781
Test case provided by: rwatson
MFC after: 1 week
expressions on i386 are evaluated in the range of the long double type,
so this is wrong in a different but hopefully less worse way than
before. Since expressions are evaluated in long double registers,
there is no runtime cost to using long double instead of double to
declare intermediate values (except in cases where this avoids compiler
bugs), and by careful use of float_t or double_t it is possible to
avoid some of the compiler bugs in this area, provided these types are
declared as long double.
I was going to change float.h to be less broken and more usable in
combination with the change here (in particular, it is more necessary
to know the effective number of bits in a double_t when double_t !=
double, since DBL_MANT_DIG no longer logically gives this, and
LDBL_MANT_DIG doesn't give it either with FreeBSD-i386's default
rounding precision. However, this was too hard for now. In particular,
LDBL_MANT_DIG is used a lot in libm, so it cannot be changed. One
thing that is completely broken now is LDBL_MAX. This may have sort
of worked when it was changed from DBL_MAX in 2002 (adding 0 to it at
runtime gave +Inf, but you could at least compare with it), but starting
with gcc-3.3.1 in 2003, it is always +Inf due to evaluating it at
compile time in the default rounding precision.
expressions on i386 are evaluated in the range of the long double type,
so this is wrong in a different but hopefully less worse way than
before. Since expressions are evaluated in long double registers,
there is no runtime cost to using long double instead of double to
declare intermediate values (except in cases where this avoids compiler
bugs), and by careful use of float_t or double_t it is possible to
avoid some of the compiler bugs in this area, provided these types are
declared as long double.
I was going to change float.h to be less broken and more usable in
combination with the change here (in particular, it is more necessary
to know the effective number of bits in a double_t when double_t !=
double, since DBL_MANT_DIG no longer logically gives this, and
LDBL_MANT_DIG doesn't give it either with FreeBSD-i386's default
rounding precision. However, this was too hard for now. In particular,
LDBL_MANT_DIG is used a lot in libm, so it cannot be changed. One
thing that is completely broken now is LDBL_MAX. This may have sort
of worked when it was changed from DBL_MAX in 2002 (adding 0 to it at
runtime gave +Inf, but you could at least compare with it), but starting
with gcc-3.3.1 in 2003, it is always +Inf due to evaluating it at
compile time in the default rounding precision.
mount options that mount_nfs could pass down, if it passed
down string mount options. Right now, mount_nfs jut passes
down a single mount option named "nfs_args" with a fully
initialized 'struct nfs_args'.
In future commits, we will add code to the kernel for parsing stringified
NFS mount options, so that we can convert mount_nfs to pass string options
from userspace to kernel, instead of an initialized struct nfs_args.
the same way that it is default initialized in revision 1.77 of mount_nfs.c.
Right now, this is a no-op, because currently we initialize
struct nfs_args in mount_nfs in userspace, and pass it
down into the kernel via nmount(), so we overwrite whatever we initialize
here with the value passed in from userspace.
However, this lays the groundwork for moving away from passing
struct nfs_args from userspace to kernel via nmount(), so that we
can instead pass string mount options via nmount() which can be parsed in
the kernel. This will make it easier to add new NFS mount options.
passing it to cpuset_which(). Pass in 'set' instead. This argument
is not used but for convenience cpuset_which() nulls all incoming
parameters.
Submitted by: davidxu
Patch in the PR was modified to check active jumbo buffers in use
and other possible jumbo buffer leak.
Jumbo buffer usage in lge(4) still wouldn't be reliable due to lack
of driver lock in local jumbo buffer allocator. Either introduce
a new lock to protect jumbo buffer or switch to UMA backed page
allocator for jumbo frame is required.
PR: kern/78072
mask none of the upper bits are set.
- Be more careful about enforcing the boundaries of masks and child sets.
- Introduce a few more CPU_* macros for implementing these tests.
- Change the cpusetsize argument to be bytes rather than bits to match
other apis.
Sponsored by: Nokia
IPPORT_EPHEMERALFIRST and IPPORT_EPHEMERALLAST with values
10000 and 65535 respectively.
The rationale behind is that it makes the attacker's life more
difficult if he/she wants to guess the ephemeral port range and
also lowers the probability of a port colision (described in
draft-ietf-tsvwg-port-randomization-01.txt).
While there, remove code duplication in in_pcbbind_setup().
Submitted by: Fernando Gont <fernando at gont.com.ar>
Approved by: njl (mentor)
Reviewed by: silby, bms
Discussed on: freebsd-net
mappings. Automatic promotion can be enabled by setting the tunable
"vm.pmap.pg_ps_enabled" to a non-zero value. By default, automatic
promotion is disabled. (Expect this to change.)
Reviewed by: ups
Tested by: kris, Peter Holm
the specific semantics of ockmgr aren't required: update UFS1 extended
attributes to protect its data structures using an sx lock.
While here, update comments on lock granularity.
MFC after: 2 weeks
The kernel config file is KERNCONF=MPC85XX, so the usual procedure applies:
1. make buildworld TARGET_ARCH=powerpc
2. make buildkernel TARGET_ARCH=powerpc TARGET_CPUTYPE=e500 KERNCONF=MPC85XX
This default config uses kernel-level FPU emulation. For the soft-float world
approach:
1. make buildworld TARGET_ARCH=powerpc TARGET_CPUTYPE=e500
2. disable FPU_EMU option in sys/powerpc/conf/MPC85XX
3. make buildkernel TARGET_ARCH=powerpc TARGET_CPUTYPE=e500 KERNCONF=MPC85XX
Approved by: cognet (mentor)
MFp4: e500
TSEC is the MAC engine offering 10, 100 or 1000 Mbps speed and is found on
different Freescale parts (MPC83xx, MPC85xx). Depending on the silicon version
there are up to four TSEC units integrated on the chip.
This driver also works with the enhanced version of the controller (eTSEC),
which is backwards compatible, but doesn't take advantage of its additional
features (various off-loading mechanisms) at the moment.
Approved by: cognet (mentor)
Obtained from: Semihalf
MFp4: e500
The QUICC engine is found on various Freescale parts including MPC85xx, and
provides multiple generic time-division serial channel resources, which are in
turn muxed/demuxed by the Serial Communications Controller (SCC).
Along with core QUICC/SCC functionality a uart(4)-compliant device driver is
provided which allows for serial ports over QUICC/SCC.
Approved by: cognet (mentor)
Obtained from: Juniper
MFp4: e500
The PQ3 is a high performance integrated communications processing system
based on the e500 core, which is an embedded RISC processor that implements
the 32-bit Book E definition of the PowerPC architecture. For details refer
to: http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MPC8555E
This port was tested and successfully run on the following members of the PQ3
family: MPC8533, MPC8541, MPC8548, MPC8555.
The following major integrated peripherals are supported:
* On-chip peripherals bus
* OpenPIC interrupt controller
* UART
* Ethernet (TSEC)
* Host/PCI bridge
* QUICC engine (SCC functionality)
This commit brings the main functionality and will be followed by individual
drivers that are logically separate from this base.
Approved by: cognet (mentor)
Obtained from: Juniper, Semihalf
MFp4: e500
native extended attributes. This didn't interfere with the operation of
UFS2 extended attributes, but the code shouldn't be running for UFS2.
MFC after: 2 weeks
a queue entry field, just copy out the unsigned int that is the trigger
message. In practice, auditd always requested sizeof(unsigned int), so
the extra bytes were ignored, but copying them out was not the intent.
MFC after: 1 month
soft lifetime [1] introduced in rev. 1.21 of key.c.
Along with that, fix a related problem in key_debug
printing the correct data.
While there replace a printf by panic in a sanity check.
PR: 120751
Submitted by: Kazuaki ODA (kazuaki aliceblue.jp) [1]
MFC after: 5 days
Rework of this area is a pre-requirement for importing e500 support (and
other PowerPC core variations in the future). Mainly the following
headers are refactored so that we can cover for low-level differences between
various machines within PowerPC architecture:
<machine/pcpu.h>
<machine/pcb.h>
<machine/kdb.h>
<machine/hid.h>
<machine/frame.h>
Areas which use the above are adjusted and cleaned up.
Credits for this rework go to marcel@
Approved by: cognet (mentor)
MFp4: e500
- Move the assigment of the socket down before we first need it.
No need to do it at the beginning and then drop out the function
by one of the returns before using it 100 lines further down.
- Use t_maxopd which was assigned the "tcp_mssdflt" for the corrrect
AF already instead of another #ifdef ? : #endif block doing the same.
- Remove an unneeded (duplicate) assignment of mss to t_maxseg just before
we possibly change mss and re-do the assignment without using t_maxseg
in between.
Reviewed by: silby
No objections: net@ (silence)
MFC after: 5 days
- When searching for affinity search backwards in the tree from the last
cpu we ran on while the thread still has affinity for the group. This
can take advantage of knowledge of shared L2 or L3 caches among a
group of cores.
- When searching for the least loaded cpu find the least loaded cpu via
the least loaded path through the tree. This load balances system bus
links, individual cache levels, and hyper-threaded/SMT cores.
- Make the periodic balancer recursively balance the highest and lowest
loaded cpu across each link.
Add support for cpusets:
- Convert the cpuset to a simple native cpumask_t while the kernel still
only supports cpumask.
- Pass the derived cpumask down through the cpu_search functions to
restrict the result cpus.
- Make the various steal functions resilient to failure since all threads
can not run on all cpus any longer.
General improvements:
- Precisely track the lowest priority thread on every runq with
tdq_setlowpri(). Before it was more advisory but this ended up having
pathological behaviors.
- Remove many #ifdef SMP conditions to simplify the code.
- Get rid of the old cumbersome tdq_group. This is more naturally
expressed via the cpu_group tree.
Sponsored by: Nokia
Testing by: kris
tree structure that encodes the level of cache sharing and other
properties.
- Provide several convenience functions for creating one and two level
cpu trees as well as a default flat topology. The system now always
has some topology.
- On i386 and amd64 create a seperate level in the hierarchy for HTT
and multi-core cpus. This will allow the scheduler to intelligently
load balance non-uniform cores. Presently we don't detect what level
of the cache hierarchy is shared at each level in the topology.
- Add a mechanism for testing common topologies that have more information
than the MD code is able to provide via the kern.smp.topology tunable.
This should be considered a debugging tool only and not a stable api.
Sponsored by: Nokia
and assignment.
- Add a reference to a struct cpuset in each thread that is inherited from
the thread that created it.
- Release the reference when the thread is destroyed.
- Add prototypes for syscalls and macros for manipulating cpusets in
sys/cpuset.h
- Add syscalls to create, get, and set new numbered cpusets:
cpuset(), cpuset_{get,set}id()
- Add syscalls for getting and setting affinity masks for cpusets or
individual threads: cpuid_{get,set}affinity()
- Add types for the 'level' and 'which' parameters for the cpuset. This
will permit expansion of the api to cover cpu masks for other objects
identifiable with an id_t integer. For example, IRQs and Jails may be
coming soon.
- The root set 0 contains all valid cpus. All thread initially belong to
cpuset 1. This permits migrating all threads off of certain cpus to
reserve them for special applications.
Sponsored by: Nokia
Discussed with: arch, rwatson, brooks, davidxu, deischen
Reviewed by: antoine
not have VTOC information about the partitions, it will be created.
This is because the VTOC information is used for the partition type
and FreeBSD's sunlabel(8) does not create nor use VTOC information.
For this purpose, new tags have been added to support FreeBSD's
partition types.
structure. This allows per-CPU variations of struct pmap on a
single architecture without affecting the machine-independent
fields. As such, the PMAP variations don't affect the ABI. They
become part of it.
CPUFREQ_DRV_SETTINGS(). The value of count on input is used to
prefent overflow of the settings buffer passed into CPUFREQ_DRV_SETTINGS().
This corrects the "est: CPU supports Enhanced Speedstep, but is not recognized."
error on my system.
MFC after: 1 week
than rely on the lockmgr support [1]:
* bump the waiters only if the interlock is held
* let brelvp() return the waiters count
* rely on brelvp() instead than BUF_LOCKWAITERS() in order to check
for the waiters number
- Remove a namespace pollution introduced recently with lockmgr.h
including lock.h by including lock.h directly in the consumers and
making it mandatory for using lockmgr.
- Modify flags accepted by lockinit():
* introduce LK_NOPROFILE which disables lock profiling for the
specified lockmgr
* introduce LK_QUIET which disables ktr tracing for the specified
lockmgr [2]
* disallow LK_SLEEPFAIL and LK_NOWAIT to be passed there so that it
can only be used on a per-instance basis
- Remove BUF_LOCKWAITERS() and lockwaiters() as they are no longer
used
This patch breaks KPI so __FreBSD_version will be bumped and manpages
updated by further commits. Additively, 'struct buf' changes results in
a disturbed ABI also.
[2] Really, currently there is no ktr tracing in the lockmgr, but it
will be added soon.
[1] Submitted by: kib
Tested by: pho, Andrea Barberio <insomniac at slackware dot it>
partition table is empty, check to see if we have something that
looks sufficiently like a BPB. On non-i386 machines, the boot
sector typically doesn't contain boot code; the end of the boot
sector is all zeroes. This is also where the partition table is
for MBRs.
We only check the sector size and cluster size, as that seems to
be the most reliable across implementations, BPB versions and
platforms.
just em, there is an igb driver (this follows behavior with our Linux drivers).
All adapters up to the 82575 are supported in em, and new client/desktop support
will continue to be in that adapter.
The igb driver is for new server NICs like the 82575 and its followons.
Advanced features for virtualization and performance will be in this driver.
Also, both drivers now have shared code that is up to the latest we have
released. Some stylistic changes as well.
Enjoy :)
code to add padlock features to the CPU model on VIA CPUs was no longer
effective. Change the code to instead output a separate printf during
dmesg for VIA Padlock features similar to other cpuid feature bitmasks.
MFC after: 1 week
Add "show sysregs" command to ddb. On i386, this gives gdt, idt, ldt,
cr0-4, etc. Support should be added for other platforms that have a
different set of registers for system use.
while still restricting auto-channel select to only those channels
permitted by regulatory constraints (sorta, we're still missing the
checks to honor radar and noadhoc status on channels). This somehow
got lost in the initial merge of the revised scanning code.
Reviewed by: jhay
MFC after: 2 weeks
frames. This bug seems to happen on certain hardware model/revision
(e.g. 88E8053) but it's not identified which hardwares are affected.
Revision 1.4 of if_mskreg.h was not enough to workaround the bug.
To workaround it, inrease GMAC FIFO threshold by one FIFO word to
flush received pause frames.
Reported by: das, Kirill Nuzhdin < kirill.nuzhdin AT rad dot chem dot msu dot ru >
Tested by: das, Kirill Nuzhdin
only because there's a partition table where the boot sector has
boot code. Boot sectors without boot code look like a MBR for all
practical purposes. This change adds a check for the partition table
and fails the probe when it's obvously invalid. The assumption being
that the sector contains a boot sector and not a MBR.
More checks are needed to distinguish a boot secto without boot code
from a (empty) MBR.
This fixes the panic which happens when mdcreate_vnode() calls vn_close()
and mddestroy() calls it again further down the error handling path.
Reviewed by: kris, kib
MFC after: 3 days
- Consolidate the code to humanize the size of a disk partition into a
single function based on the code for GPT partitions and use it for
GPT partitions, BSD slices, and BSD partitions.
- Teach the humanize code to use KB for small partitions (e.g. GPT boot
partitions now show up as 64KB rather than 0MB).
- Pad a few partition type names out so that things line up in the
common case.
MFC after: 1 week
weren't displayed on the new console. However, the config string has been
altered as part of being parsed so we only display the first option. Fix
this by saving a copy of /boot.config before parsing it and displaying the
saved copy after parsing.
MFC after: 1 week
PR: i386/103972
Submitted by: Alexandre Belloni alexandre.belloni of netasq.com
global audit mutex and condition variables, with an sx lock which protects
the trail vnode and credential while in use, and is acquired by the system
call code when rotating the trail. Previously, a "message" would be sent
to the kernel audit worker, which did the rotation, but the new code is
simpler and (hopefully) less error-prone.
Obtained from: TrustedBSD Project
MFC after: 1 month
the limit in bytes) hard coded into both the kernel and userland.
Make both these limits a sysctl, so it is easy to change the limit.
If the userland part of ipfw finds that the sysctls don't exist,
it will just fall back to the traditional limits.
(100 packets is quite a small limit these days. If you want to test
TCP at 100Mbps, 100 packets can only accommodate a DBP of 12ms.)
Note these sysctls in the man page and warn against increasing them
without thinking first.
MFC after: 3 weeks
device supports retrieving a serial number. Instead, first query the
list of VPD pages it does support, and only query the serial number if
it's supported, else silently move on. This eliminates a lot of noise
during verbose booting, and will likely eliminate the need for most
NOSERIAL quirks.
pmap_remove_all() must not be called on fictitious pages. To date,
fictitious pages have been allocated from zeroed memory, effectively
hiding this problem because the fictitious pages appear to have an empty
pv list. Submitted by: Kostik Belousov
Rewrite the comments describing vm_object_page_remove() to better
describe what it does. Add an assertion. Reviewed by: Kostik Belousov
MFC after: 1 week
the vnode interlock is not held. vn_printf() already correctly handles
locked and unlocked vnode interlocks, and all the in-tree vop_print
methods are interlock-agnostic.
Some code calls vprintf() with the vnode interlock held, that causes
unjustified panics with INVARIANTS (ffs_syncvnode() as example).
Reported by: Peter Holm
want to adjust this code to just assume that all CPUs >= Esther should
be checked for the extended cpuid flags register.
MFC after: 3 days
PR: i386/119491
The code seems pretty MPSAFE and Giant is held over kproc_exit() which
at lowel calls exit1(). exit1() requires Giant to be unowned so this
opens a window for races.
Reported by: Bryan Venteicher <bryanv at daemoninthecloset dot org>
Tested by: Bryan Venteicher <bryanv at daemoninthecloset dot org>
always curthread.
As KPI gets broken by this patch, manpages and __FreeBSD_version will be
updated by further commits.
Tested by: Andrea Barberio <insomniac at slackware dot it>
source upgrades by falling back to GNU ar(1) as necessary. Option
WITH_BSDAR is gone. Option _WITH_GNUAR to aid in upgrades is *not*
supposed to be set by the user.
Stop bootstrapping BSD ar(1) on the next __FreeBSD_version bump, as
there are no known bugs in it. Bump __FreeBSD_version to anticipate
this and to flag the switch to BSD ar(1), should it be needed for
something.
Input from: obrien, des, kaiw
first before they can be set to Explorer mode.
PR: kern/118578
Submitted by: Andriy Gapon <avg@icyb.net.ua> (I added some comments)
Reviewed by: philip
MFC after: 1 month
variations (e500 currently), this provides a gcc-level FPU emulation and is an
alternative approach to the recently introduced kernel-level emulation
(FPU_EMU).
Approved by: cognet (mentor)
MFp4: e500
only anonymous default (OBJT_DEFAULT) and swap (OBJT_SWAP) objects should
ever have OBJ_ONEMAPPING set. However, vm_object_deallocate() was
setting it on device (OBJT_DEVICE) objects. As a result,
vm_object_page_remove() could be called on a device object and if that
occurred pmap_remove_all() would be called on the device object's pages.
However, a device object's pages are fictitious, and fictitious pages do
not have an initialized pv list (struct md_page).
To date, fictitious pages have been allocated from zeroed memory,
effectively hiding this problem. Now, however, the conversion of rotting
diagnostics to invariants in the amd64 and i386 pmaps has revealed the
problem. Specifically, assertion failures have occurred during the
initialization phase of the X server on some hardware.
MFC after: 1 week
Discussed with: Kostik Belousov
Reported by: Michiel Boland
namespace in order to handle lockmgr fields in a controlled way instead
than spreading all around bogus stubs:
- VN_LOCK_AREC() allows lock recursion for a specified vnode
- VN_LOCK_ASHARE() allows lock sharing for a specified vnode
In FFS land:
- BUF_AREC() allows lock recursion for a specified buffer lock
- BUF_NOREC() disallows recursion for a specified buffer lock
Side note: union_subr.c::unionfs_node_update() is the only other function
directly handling lockmgr fields. As this is not simple to fix, it has
been left behind as "sole" exception.
the same order that FreeBSD 6 and before did. Doug
White and the other bloodhounds at ISC discovered that
while FreeBSD 7's ordering of options was more efficient,
it caused some cable modem routers to ignore the
SYN-ACKs ordered in this fashion.
The placement of sackOK after the timestamp option seems
to be the critical difference:
FreeBSD 6:
<mss 1460,nop,wscale 1,nop,nop,timestamp 3512155768 0,sackOK,eol>
FreeBSD 7.0:
<mss 1460,nop,wscale 3,sackOK,timestamp 1370692577 0>
FreeBSD 7.0 + this change:
<mss 1460,nop,wscale 3,nop,nop,timestamp 7371813 0,sackOK,eol>
MFC after: 1 week
the provided trailers. This has been broken since revision 1.240.
Submitted by: Dan Nelson
PR: kern/120948
"sounds ok to me" from: phk
MFC after: 3 days
can run on processors that don't have a FPU. This is typically the
case for Book E processors. While a tuned system will probably want
to use soft-float (or use a processor that has a FPU if the usage is
FP intensive enough), allowing hard-float on FPU-less systems gives
great portability and flexibility.
Obtained from: NetBSD
o Disable interrupts while not running U-Boot code. We clobber
registers that the U-Boot interrupt handlers assume to be
fixed as per the U-Boot register usage. At this time this only
applies to r14. U-Boot uses r2 now for what they used r29 for.
After we restore r14 in preparation of doing the syscall, we
re-enable interrupts. When we return from the syscall, we
disable interrupts and restore the callee-saved r14.
(link) address and the physical (load) address. Ideally, the mapping
between link and load addresses should be abstracted by the copyin(),
copyout() and readin() functions, so that we don't have to add kluges
in __elfN(loadimage)(). Then, we could also have paged virtual memory
for the kernel. This can be important under EFI, where you need to
allocate physical memory form the firmware if you want to work in all
scenarios.
o Move the API prototypes to a separate header (glue.h)
o Allow the platform to hint libuboot about where to look
for the API signature. The uboot_address variable is
expected to be defined by the platform.
- add support for T3C
- add DDP support (zero-copy receive)
- fix TOE transmit of large requests
- fix shutdown so that sockets don't remain in CLOSING state indefinitely
- register listeners when an interface is brought up after tom is loaded
- fix setting of multicast filter
- enable link at device attach
- exit tick handler if shutdown is in progress
- add helper for logging TCB
- add sysctls for dumping transmit queues
- note that TOE wxill not be MFC'd until after 7.0 has been finalized
MFC after: 3 days
consists of the null-terminated name and the contents of any structure
you wish to record. A new ktrstruct() function constructs and emits a
KTR_STRUCT record. It is accompanied by convenience macros for struct
stat and struct sockaddr.
In kdump(1), KTR_STRUCT records are handled by a dispatcher function
that runs stringent sanity checks on its contents before handing it
over to individual decoding funtions for each type of structure.
Currently supported structures are struct stat and struct sockaddr for
the AF_INET, AF_INET6 and AF_UNIX families; support for AF_APPLETALK
and AF_IPX is present but disabled, as I am unable to test it properly.
Since 's' was already taken, the letter 't' is used by ktrace(1) to
enable KTR_STRUCT trace points, and in kdump(1) to enable their
decoding.
Derived from patches by Andrew Li <andrew2.li@citi.com>.
PR: kern/117836
MFC after: 3 weeks
Check that only MREMAP_FIXED and MREMAP_MAYMOVE flags are specified.
Check for the page alignment of the addr argument.
Submitted by: rdivacky
MFC after: 1 week
- Added loose RX MTU functionality to allow frames larger than 1500 bytes
to be accepted even though the interface MTU is set to 1500.
- Implemented new TCP header splitting/jumbo frame support which uses
two chains for receive traffic rather than the original single recevie
chain.
- Added additional debug support code.
binutils ar and ranlib to gar and granlib, respectively.
* Introduce a temporary variable WITH_GNUAR as a safety net.
When buildworld with -DWITH_GNUAR, GNU binutils ar and ranlib
will install as default ones and 'BSD' ar will be disabled.
* Bump __FreeBSD_version to reflect the import of 'BSD' ar(1).
Approved by: jkoshy (mentor)
The logical disks will appear as /dev/lvm/<vol group>-<logical vol>, for
instance /dev/lvm/vg0-home. G_LINUX_LVM currently supports linear stripes with
segments on multiple physical disks. The metadata is read only, logical
volumes can not be allocated or resized.
Reviewed by: Ivan Voras
Previously known as geom_lvm(4), rename requested by des, phk.
file system. In particular, stop overwriting mount point
flags in nfs_mountdiskless() because now they are set
elsewhere. (They were _initialized_ by that function in
the 4.4BSD days, when mount structures were not allocated
in a centralized manner -- see rev. 1.1 of this file.)
Fix nfs_mount(), which happened to depend on the loss of
MNT_ROOTFS when it came to update handling.
Also note that mountnfs() no longer handles updates. Now
they shouldn't reach this function, so printf a diagnostic
message if that happens due to a coding error.
macros. The only semantic change was the need to add a vc_opened field
to struct vcomm since we can no longer use the request queue returning
to an uninitialized state to hold whether or not the device is open.
MFC after: 1 month
the same operation of lockmgr() but accepting a custom wmesg, prio and
timo for the particular lock instance, overriding default values
lkp->lk_wmesg, lkp->lk_prio and lkp->lk_timo.
- Use lockmgr_args() in order to implement BUF_TIMELOCK()
- Cleanup BUF_LOCK()
- Remove LK_INTERNAL as it is nomore used in the lockmgr namespace
Tested by: Andrea Barberio <insomniac at slackware dot it>
fundamentally fairly confused about how signals work and when it is
appropriate for upcalls to be interrupted. In particular, we should
be exempting certain upcalls from interruption, we should not always
eventually time out sleeping on a upcall, and we should not be
interrupting the sleep for certain signals that we currently are
(including SIGINFO). This code needs to be reworked in the style of
NFS interruptible mounts.
MFC after: 1 month
coherent with the data caches. Implement a quick fix to allow
us to boot on Montecito, while I'm working on a better fix in
the mean time.
Commit made on Montecito-based Itanium...
is to be requested via a "ro" option. At the same time, MNT_RDONLY
is gradually becoming an indicator of the current state of the FS
instead of a command flag. Today passing MNT_RDONLY alone to the
kernel's mount machinery will lead to various glitches. (See the
PRs for examples.)
Therefore mount the root FS with a "ro" option instead of the
MNT_RDONLY flag. (Note that MNT_RDONLY still is added to the mount
flags internally, by vfs_donmount(), if "ro" was specified.)
To be able to pass "ro" cleanly to kernel_vmount(), teach the latter
function to accept options with NULL values.
Also correct the comment explaining how mount_arg() handles length
of -1.
PR: bin/106636 kern/120319
Submitted by: Jaakko Heinonen <see PR kern/120319 for email> (originally)
legacy interrupts rather than MSI as a special case. Prior to this
commit, the interrupt handler was doing the slow handshaking with
the device to ensure the legacy interrupt was lowered in both
the legacy and MSI-X case. This handshaking was not
required for MSI-X.
allocator for jumbo frame.
o Removed unneeded jlist lock which was used to manage jumbo
buffers.
o Don't reinitialize hardware if MTU was not changed.
o Added additional check for minimal MTU size.
o Added a new tunable hw.skc.jumbo_disable to disable jumbo frame
support for the driver. The tunable could be set for systems that
do not need to use jumbo frames and it would save
(9K * number of Rx descriptors) bytes kernel memory.
o Jumbo buffer allocation failure is no longer critical error for
the operation of sk(4). If sk(4) encounter the allocation failure
it just disables jumbo frame support and continues to work without
user intervention.
With these changes jumbo frame performance of sk(4) was slightly
increased and users should not encounter jumbo buffer allocation
failure. Previously sk(4) tried to allocate physically contiguous
memory, 3388KB for 256 Rx descriptors. Sometimes that amount of
contiguous memory region could not be available for running systems
which in turn resulted in failure of loading the driver.
Tested by: Cy Schubert < Cy.Schubert () komquats dot com >
