would resize a partition, but label providers - e.g. /dev/gptid/XXX - would
stay the same size.
Reviewed by: mav
MFC after: 1 month
Sponsored by: FreeBSD Foundation
- Remove two excessive and slow register reads from isp_intr(). Instead
of rereading value every time, assume that registers contain what we have
written there.
- Avoid sequential search through 4096 array elements when looking for
command tag. Use hash of lists to store active tags separately from free
ones and so greatly speedup the searches.
Reviewed by: mjacob
When parent provider has been resized, the scheme specific G_PART_RESIZE
method does an update of scheme's metadata. But all changes are not saved
to disk, until `gpart commit` will be called.
Discussed with: trasz
MFC after: 1 month
The order of releasing resources in mlxen was wrong, which caused
panic on reload of the module.
conf_ctx list should be released before stat_ctx list, otherwise
the leafs in conf_ctx list won't be released because of the dependancy.
The fix is to change the order of the releases.
Submitted by: Shahar Klein (shahark at mellanox.com)
harvester, which now always calls hwrngs with the buffer length
multiple of the word size. This allows to remove the excessive memory
accesses to temporary buffer when saving the entropy word.
Streamline the assembly and unify it between i386 and amd64.
Reviewed by: markm, des
Approved by: so (des)
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
The MDIO bus frequency is configured as a divisor off of the MDIO bus
reference clock. For the AR9344 and later, the MDIO bus frequency can
be faster than normal (ie, up to 100MHz) and thus a static divisor may
not be very applicable.
So, for those boards that may require an actual frequency to be selected
regardless of what crazy stuff the vendor throws in uboot, one can now
set the MDIO bus frequency. It uses the MDIO frequency and the target
frequency to choose a divisor that doesn't exceed the target frequency.
By default it will choose:
* DIV_28 on everything; except
* DIV_58 on the AR9344 to be conservative.
Whilst I'm here, add some comments about the defaults being not quite
right. For the other internal switch devices (like the AR933x, AR724x)
the divisor can be higher - it's internal and the reference MDIO clock
is much lower than 100MHz.
The divisor tables and loop code is inspired from Linux/OpenWRT. It's very
simple; I didn't feel that reimplementing it would yield a substantially
different solution.
Tested:
* AR9331 (mips24k)
* AR9344 (mips74k)
Obtained from: Linux/OpenWRT
'invpcid' instruction to the guest. Currently bhyve will try to enable this
capability unconditionally if it is available.
Consolidate code in bhyve to set the capabilities so it is no longer
duplicated in BSP and AP bringup.
Add a sysctl 'vm.pmap.invpcid_works' to display whether the 'invpcid'
instruction is available.
Reviewed by: grehan
MFC after: 3 days
correctly by doing nothing, then add a panic for the default case, because
that implies that some driver asked for a sync (probably incorrectly) and
nothing was done.
Usual symptoms are messages like
rn_delete: inconsistent annotation
rn_addmask: mask impossibly already in tree
or inability to flush/delete particular prefix in ipfw table.
Changes:
* Assume 32 bytes as maximum radix key length
* Remove rn_init()
* Statically allocate rn_ones/rn_zeroes
* Make separate mask tree for each "normal" tree instead of system global one
* Remove "optimization" on masks reusage and key zeroying
* Change rn_addmask() arguments to accept tree pointer (no users in base)
PR: kern/182851, kern/169206, kern/135476, kern/134531
Found by: Slawa Olhovchenkov <slw@zxy.spb.ru>
MFC after: 2 weeks
Reviewed by: glebius
Sponsored by: Yandex LLC
- Take BIO lock in biodone() only when there is no completion callback set
and so we should wake up thread waiting in biowait().
- Remove msleep() timeout from biowait(). It was added 11 years ago, when
there was no locks used, and it should not be needed any more.
Move tq_enqueue() call out of the queue lock for known handlers (actually
I have found no others in the base system). This reduces queue lock hold
time and congestion spinning under active multithreaded enqueuing.
Introduce new function devstat_end_transaction_bio_bt(), adding new argument
to specify present time. Use this function to move binuptime() out of lock,
substantially reducing lock congestion when slow timecounter is used.
we can now add all the hardware bits for the DB120.
* arge0/argemdio0 is hooked up to an AR8327 switch - which there's currently
no support for. However, the bootloader on this board does set it up as
a basic switch so we can at least _use_ it ourselves.
So we should at least configure the arge0 side of things, including the GMAC
register.
* .. the GMAC config peels off arge0 from the internal switch and exposes it
as an RGMII to said AR8327.
* arge1/argemdio1 are hooked up to an internal 10/100 switch. So, that also
needs configuring.
* Add support for the NOR flash layout.
* Add support for the wifi (which works, with bugs, but it works.)
What's missing!
* No GPIO stuff yet!
* No sound (I2S) and no NAND flash support yet, sorry!
* The normal DB120 has an external AR95xx wifi chip on PCIe but with the
actual calibration data in the NOR flash. My DB120 has been modified
to let me use the PCIe slot as a normal PCIe slot. I'll add the "default"
settings later when I have access to a non-modified one.
* Other stuff, like why the wifi unit gets upset and spits out stuck beacons
and interrupt storms everywhere. Sigh.
Tested:
* DB120 board - AR9344 (mips74k SoC) booting off of SPI flash into multi-user
mode.
* Do the hardware setup in the right order!
* Modify/improve the chip probe check so it can actually
probe the 7240/9340 directly (although it's not yet used..)
* Initialise and fetch the is_mii option
* Fix some debugging whilst I'm here.
This is enough to get things off the ground.
Tested:
* AR9344 SoC
* Add an AR9340 switch version entry;
* Support the switch being connected via MII;
* Add a flag to note that a switch is actually an internal
switch rather than an external switch.
Now:
* The ar9340 switch can interconnect via MII;
* Since some slightly different phy/switch register access methods
and quirks appear for the internal versus external switch,
we will need a flag to mark it as an "internal" switch.
Tested:
* AR9344 (internal switch)
* AR9331 (internal switch)
TODO:
* Test the AR8316 switch!
This is just the chip initialisation code (for now.)
It's not linked into the main build as it requires a bunch of other code
to be tidied up and committed. But it indeed does function as advertised.
Tested:
* AR9344 SoC
up and running.
* The MAC FIFO configurations needed updating;
* Reset the MDIO block at the same time the MAC block is reset;
* The default divisor needs changing as the DB120 runs at a higher
base MDIO bus clock compared to other chips.
The long-term fix is to allow the system to have a target MDIO bus
clock rate and then calculate the most suitable divider to meet
that. This will likely need implementing before stable external
PHY or switch support can be committed.
Tested:
* AR9344 (mips74k)
* AR9331 (mips24k)
Without correct barriers, this code just plain doesn't work on the
mips74k cores (specifically the AR9344.)
In particular, the MDIO register accesses need this barriering or MII bus
access results in out-of-order garbage.
Tested:
* AR9344 (mips74k)
* AR9331 (mips24k)
This is required for correct, stable operation on the MIPS74k SoCs
that are dual-issue, superscalar pipelines.
Tested:
* AR9344 SoC (MIPS74k)
* AR9331 SoC (MIPS24k)
null-separated strings to a single string. This can be used to print the
full arguments of a process using execsnoop (from the DTrace toolkit) or
with the following one-liner:
dtrace -n 'syscall::execve:return {trace(curpsinfo->pr_psargs);}'
Note that this relies on the process arguments being cached via the struct
proc, which means that it will not work for argvs longer than
kern.ps_arg_cache_limit. However, the following rather non-portable
script can be used to extract any argv at exec time:
fbt::kern_execve:entry
{
printf("%s", memstr(args[1]->begin_argv, ' ',
args[1]->begin_envv - args[1]->begin_argv));
}
The debug.dtrace.memstr_max sysctl limits the maximum argument size to
memstr(). Thanks to Brendan Gregg for helpful comments on freebsd-dtrace.
Tested by: Fabian Keil (earlier version)
MFC after: 2 weeks
the 'vmmdev_mtx' in vmmdev_rw().
Rely on the 'si_threadcount' accounting to ensure that we never destroy the
VM device node while it has operations in progress (e.g. ioctl, mmap etc).
Reported by: grehan
Reviewed by: grehan
section. This prevents a boot crash on nearly all iMacs and PowerMacs/Books.
The allocation in the probe section was working before because ata_probe was
returning 0 which did not invoke a second DEVICE_PROBE. Now it returns
a BUS_PROBE_DEFAULT which can invoke a second DEVICE_PROBE which results in
a "failed to reserve resource" exit.
PR: powerpc/182978
Discussed with: grehan@
MFC after: 1 Week
and not 8-bit. Fix support for isochronous transfers in USB host mode.
Fix a whitespace while at it.
MFC after: 1 week
Reported by: SAITOU Toshihide <toshi@ruby.ocn.ne.jp>
PR: usb/181987
four counters to struct ifaddr. This kills '+=' on a variables shared
between processors for every packet.
- Nuke struct if_data from struct ifaddr.
- In ip_input() do not put a reference on ifaddr, instead update statistics
right now in place and do IN_IFADDR_RUNLOCK(). These removes atomic(9)
for every packet. [1]
- To properly support NET_RT_IFLISTL sysctl used by getifaddrs(3), in
rtsock.c fill if_data fields using counter_u64_fetch().
- Accidentially fix bug in COMPAT_32 version of NET_RT_IFLISTL, which
took if_data not from the ifaddr, but from ifaddr's ifnet. [2]
Submitted by: melifaro [1], pluknet[2]
Sponsored by: Netflix
Sponsored by: Nginx, Inc.
tools would need to know about the counter_u64_t type. Allow to include
sys/counter.h from userspace.
- Utilize now defined type in kvm_counter_u64_fetch().
Sponsored by: Netflix
Sponsored by: Nginx, Inc.
images compiled on the world with higher major version number than the
high version number of the booted kernel. Default to disable.
Sponsored by: The FreeBSD Foundation
Discussed with: bapt
MFC after: 1 week
devfs_iosize_max_clamp sysctl, which allows/disables SSIZE_MAX-sized
i/o requests on the devfs files.
Sponsored by: The FreeBSD Foundation
Reminded by: Dmitry Sivachenko <trtrmitya@gmail.com>
MFC after: 1 week
* Add the MDIO clock probe during clock initialisation;
* Update the ethernet PLL configuration function to use the correct
values;
* Add a GMAC block configuration to pull the configuration out of hints;
* Add an ethernet switch reconfiguration method.
Tested:
* AR9344 SoC (DB120)
.. however, this has been tested with extra patches in my tree (to fix
the ethernet/MDIO support, SPI support, ethernet switch support)
and thus it isn't enough to bring the full board support up.
* Initialise the MDIO clock to default to the reference clock;
* Add some code to allow the hints mechanism to allow setup of the GMAC
config block.
* Document how the switch is wired up internally.
Tested:
* AR9331 SoC (Carambola 2)
* Print out the platform frequency the same as the other frequencies.
* Print out the MDIO frequency.
* Optionally do GMAC and ethernet switch setup if required.
Tested:
* AR9344
switch reset/initialise functions.
The AR934x and QC955x SoCs both have a configurable MDIO base clock.
The others have the MDIO clock use the same clock as the system
reference clock, whatever that may be.
Tested:
* AR9344 SoC
TODO:
* mips24k - AR933x would be fine for now, just to ensure that things
are sane.
control block.
The GMAC configuration block allows for some configuration of how
the GMAC0 (ie, arge0) port is connected to the on-board switch
(if indeed there is one.) It both can be pushed into the on-board
switch; it could also be torn out and exposed via an external
MII (and that operational mode is also controllable.)
Obtained from: Linux/OpenWRT
Most of the code between UFS1 and UFS2 is shared so this change
is pretty safe. Not only this makes UFS1 and 2 consistent but it
also matches what NetBSD and MacOS X have for some years now.
Reviewed by: mckusick
MFC after: 1 month
Submitted by: Roger Pau Monné
Sponsored by: Citrix Systems R&D
Reviewed by: gibbs, grehan
Approved by: re (gjb)
sys/sys/systm.h:
* Add a new VM_GUEST type, VM_GUEST_HV (HyperV guest).
sys/dev/hyperv/vmbus/hv_vmbus_drv_freebsd.c:
sys/dev/hyperv/vmbus/hv_hv.c:
sys/dev/hyperv/stordisengage/hv_ata_pci_disengage.c:
* Set vm_guest to VM_GUEST_HV and use that on other HyperV related
devices instead of cloning the cpuid hypervisor check.
* Cleanup the vmbus_identify function.
prior releases.
Submitted by: Roger Pau Monné
Sponsored by: Citrix Systems R&D
Reviewed by: gibbs
Approved by: re (gjb)
sys/dev/xen/blkfront/blkfront.c:
On XenServer versions up to an including 6.2, paravirtualized
CDROM support is broken. When running in an HVM domain,
ignore paravirtualized instances of CDROM media, and instead
rely on native drivers attaching to emulated hardware. This
functions correctly on all currently known Xen based
platforms.
to dummy,yarrow and break the usability of /dev/random.
Fix the name of the tunable to something logical that 'sysctl kern.random'
emits.
Submitted by: des@ (the idea, code by me)
Refactor of /dev/random device. Main points include:
* Userland seeding is no longer used. This auto-seeds at boot time
on PC/Desktop setups; this may need some tweeking and intelligence
from those folks setting up embedded boxes, but the work is believed
to be minimal.
* An entropy cache is written to /entropy (even during installation)
and the kernel uses this at next boot.
* An entropy file written to /boot/entropy can be loaded by loader(8)
* Hardware sources such as rdrand are fed into Yarrow, and are no
longer available raw.
------------------------------------------------------------------------
r256240 | des | 2013-10-09 21:14:16 +0100 (Wed, 09 Oct 2013) | 4 lines
Add a RANDOM_RWFILE option and hide the entropy cache code behind it.
Rename YARROW_RNG and FORTUNA_RNG to RANDOM_YARROW and RANDOM_FORTUNA.
Add the RANDOM_* options to LINT.
------------------------------------------------------------------------
r256239 | des | 2013-10-09 21:12:59 +0100 (Wed, 09 Oct 2013) | 2 lines
Define RANDOM_PURE_RNDTEST for rndtest(4).
------------------------------------------------------------------------
r256204 | des | 2013-10-09 18:51:38 +0100 (Wed, 09 Oct 2013) | 2 lines
staticize struct random_hardware_source
------------------------------------------------------------------------
r256203 | markm | 2013-10-09 18:50:36 +0100 (Wed, 09 Oct 2013) | 2 lines
Wrap some policy-rich code in 'if NOTYET' until we can thresh out
what it really needs to do.
------------------------------------------------------------------------
r256184 | des | 2013-10-09 10:13:12 +0100 (Wed, 09 Oct 2013) | 2 lines
Re-add /dev/urandom for compatibility purposes.
------------------------------------------------------------------------
r256182 | des | 2013-10-09 10:11:14 +0100 (Wed, 09 Oct 2013) | 3 lines
Add missing include guards and move the existing ones out of the
implementation namespace.
------------------------------------------------------------------------
r256168 | markm | 2013-10-08 23:14:07 +0100 (Tue, 08 Oct 2013) | 10 lines
Fix some just-noticed problems:
o Allow this to work with "nodevice random" by fixing where the
MALLOC pool is defined.
o Fix the explicit reseed code. This was correct as submitted, but
in the project branch doesn't need to set the "seeded" bit as this
is done correctly in the "unblock" function.
o Remove some debug ifdeffing.
o Adjust comments.
------------------------------------------------------------------------
r256159 | markm | 2013-10-08 19:48:11 +0100 (Tue, 08 Oct 2013) | 6 lines
Time to eat crow for me.
I replaced the sx_* locks that Arthur used with regular mutexes;
this turned out the be the wrong thing to do as the locks need to
be sleepable. Revert this folly.
# Submitted by: Arthur Mesh <arthurmesh@gmail.com> (In original diff)
------------------------------------------------------------------------
r256138 | des | 2013-10-08 12:05:26 +0100 (Tue, 08 Oct 2013) | 10 lines
Add YARROW_RNG and FORTUNA_RNG to sys/conf/options.
Add a SYSINIT that forces a reseed during proc0 setup, which happens
fairly late in the boot process.
Add a RANDOM_DEBUG option which enables some debugging printf()s.
Add a new RANDOM_ATTACH entropy source which harvests entropy from the
get_cyclecount() delta across each call to a device attach method.
------------------------------------------------------------------------
r256135 | markm | 2013-10-08 07:54:52 +0100 (Tue, 08 Oct 2013) | 8 lines
Debugging. My attempt at EVENTHANDLER(multiuser) was a failure; use
EVENTHANDLER(mountroot) instead.
This means we can't count on /var being present, so something will
need to be done about harvesting /var/db/entropy/... .
Some policy now needs to be sorted out, and a pre-sync cache needs
to be written, but apart from that we are now ready to go.
Over to review.
------------------------------------------------------------------------
r256094 | markm | 2013-10-06 23:45:02 +0100 (Sun, 06 Oct 2013) | 8 lines
Snapshot.
Looking pretty good; this mostly works now. New code includes:
* Read cached entropy at startup, both from files and from loader(8)
preloaded entropy. Failures are soft, but announced. Untested.
* Use EVENTHANDLER to do above just before we go multiuser. Untested.
------------------------------------------------------------------------
r256088 | markm | 2013-10-06 14:01:42 +0100 (Sun, 06 Oct 2013) | 2 lines
Fix up the man page for random(4). This mainly removes no-longer-relevant
details about HW RNGs, reseeding explicitly and user-supplied
entropy.
------------------------------------------------------------------------
r256087 | markm | 2013-10-06 13:43:42 +0100 (Sun, 06 Oct 2013) | 6 lines
As userland writing to /dev/random is no more, remove the "better
than nothing" bootstrap mode.
Add SWI harvesting to the mix.
My box seeds Yarrow by itself in a few seconds! YMMV; more to follow.
------------------------------------------------------------------------
r256086 | markm | 2013-10-06 13:40:32 +0100 (Sun, 06 Oct 2013) | 11 lines
Debug run. This now works, except that the "live" sources haven't
been tested. With all sources turned on, this unlocks itself in
a couple of seconds! That is no my box, and there is no guarantee
that this will be the case everywhere.
* Cut debug prints.
* Use the same locks/mutexes all the way through.
* Be a tad more conservative about entropy estimates.
------------------------------------------------------------------------
r256084 | markm | 2013-10-06 13:35:29 +0100 (Sun, 06 Oct 2013) | 5 lines
Don't use the "real" assembler mnemonics; older compilers may not
understand them (like when building CURRENT on 9.x).
# Submitted by: Konstantin Belousov <kostikbel@gmail.com>
------------------------------------------------------------------------
r256081 | markm | 2013-10-06 10:55:28 +0100 (Sun, 06 Oct 2013) | 12 lines
SNAPSHOT.
Simplify the malloc pools; We only need one for this device.
Simplify the harvest queue.
Marginally improve the entropy pool hashing, making it a bit faster
in the process.
Connect up the hardware "live" source harvesting. This is simplistic
for now, and will need to be made rate-adaptive.
All of the above passes a compile test but needs to be debugged.
------------------------------------------------------------------------
r256042 | markm | 2013-10-04 07:55:06 +0100 (Fri, 04 Oct 2013) | 25 lines
Snapshot. This passes the build test, but has not yet been finished or debugged.
Contains:
* Refactor the hardware RNG CPU instruction sources to feed into
the software mixer. This is unfinished. The actual harvesting needs
to be sorted out. Modified by me (see below).
* Remove 'frac' parameter from random_harvest(). This was never
used and adds extra code for no good reason.
* Remove device write entropy harvesting. This provided a weak
attack vector, was not very good at bootstrapping the device. To
follow will be a replacement explicit reseed knob.
* Separate out all the RANDOM_PURE sources into separate harvest
entities. This adds some secuity in the case where more than one
is present.
* Review all the code and fix anything obviously messy or inconsistent.
Address som review concerns while I'm here, like rename the pseudo-rng
to 'dummy'.
# Submitted by: Arthur Mesh <arthurmesh@gmail.com> (the first item)
------------------------------------------------------------------------
r255319 | markm | 2013-09-06 18:51:52 +0100 (Fri, 06 Sep 2013) | 4 lines
Yarrow wants entropy estimations to be conservative; the usual idea
is that if you are certain you have N bits of entropy, you declare
N/2.
------------------------------------------------------------------------
r255075 | markm | 2013-08-30 18:47:53 +0100 (Fri, 30 Aug 2013) | 4 lines
Remove short-lived idea; thread to harvest (eg) RDRAND enropy into the
usual harvest queues. It was a nifty idea, but too heavyweight.
# Submitted by: Arthur Mesh <arthurmesh@gmail.com>
------------------------------------------------------------------------
r255071 | markm | 2013-08-30 12:42:57 +0100 (Fri, 30 Aug 2013) | 4 lines
Separate out the Software RNG entropy harvesting queue and thread
into its own files.
# Submitted by: Arthur Mesh <arthurmesh@gmail.com>
------------------------------------------------------------------------
r254934 | markm | 2013-08-26 20:07:03 +0100 (Mon, 26 Aug 2013) | 2 lines
Remove the short-lived namei experiment.
------------------------------------------------------------------------
r254928 | markm | 2013-08-26 19:35:21 +0100 (Mon, 26 Aug 2013) | 2 lines
Snapshot; Do some running repairs on entropy harvesting. More needs
to follow.
------------------------------------------------------------------------
r254927 | markm | 2013-08-26 19:29:51 +0100 (Mon, 26 Aug 2013) | 15 lines
Snapshot of current work;
1) Clean up namespace; only use "Yarrow" where it is Yarrow-specific
or close enough to the Yarrow algorithm. For the rest use a neutral
name.
2) Tidy up headers; put private stuff in private places. More could
be done here.
3) Streamline the hashing/encryption; no need for a 256-bit counter;
128 bits will last for long enough.
There are bits of debug code lying around; these will be removed
at a later stage.
------------------------------------------------------------------------
r254784 | markm | 2013-08-24 14:54:56 +0100 (Sat, 24 Aug 2013) | 39 lines
1) example (partially humorous random_adaptor, that I call "EXAMPLE")
* It's not meant to be used in a real system, it's there to show how
the basics of how to create interfaces for random_adaptors. Perhaps
it should belong in a manual page
2) Move probe.c's functionality in to random_adaptors.c
* rename random_ident_hardware() to random_adaptor_choose()
3) Introduce a new way to choose (or select) random_adaptors via tunable
"rngs_want" It's a list of comma separated names of adaptors, ordered
by preferences. I.e.:
rngs_want="yarrow,rdrand"
Such setting would cause yarrow to be preferred to rdrand. If neither of
them are available (or registered), then system will default to
something reasonable (currently yarrow). If yarrow is not present, then
we fall back to the adaptor that's first on the list of registered
adaptors.
4) Introduce a way where RNGs can play a role of entropy source. This is
mostly useful for HW rngs.
The way I envision this is that every HW RNG will use this
functionality by default. Functionality to disable this is also present.
I have an example of how to use this in random_adaptor_example.c (see
modload event, and init function)
5) fix kern.random.adaptors from
kern.random.adaptors: yarrowpanicblock
to
kern.random.adaptors: yarrow,panic,block
6) add kern.random.active_adaptor to indicate currently selected
adaptor:
root@freebsd04:~ # sysctl kern.random.active_adaptor
kern.random.active_adaptor: yarrow
# Submitted by: Arthur Mesh <arthurmesh@gmail.com>
Submitted by: Dag-Erling Smørgrav <des@FreeBSD.org>, Arthur Mesh <arthurmesh@gmail.com>
Reviewed by: des@FreeBSD.org
Approved by: re (delphij)
Approved by: secteam (des,delphij)
and holding a reference prior to calling further into the hyperv
stack.
Added missing FreeBSD idents.
Submitted by: Microsoft hyperv dev team
Approved by: re@ (gjb)
Fixed a panic that occurs when bringing up an interface on 57710/57711
running very old bootcode versions.
Fixed how bool is defined for those who have been using this code on older
versions of FreeBSD.
Approved by: re@ (gjb)
Approved by: davidch (mentor)
I changed it to use if_transmit a while ago but apparently with monitor
mode the if_transmit method is overridden.
This is (mostly) a workaround until a more permanent solution can be
found.
Submitted by: Patrick Kelsey <kelsey@ieee.org>
Approved by: re@ (gjb)
protected mode and may leave protected-mode-specific flags like PSL_NT set
when they return to real mode. This can cause a fault when BTX re-enters
protected mode after the BIOS mode returns.
PR: amd64/182740
Reported by: Julian Pidancet <julian.pidancet@gmail.com>
Approved by: re (gjb)
MFC after: 1 week
- Update FreeBSD version in:
- UPDATING
- sys/conf/newvers.sh
- Add 11.0 FreeBSD version for manual pages
- Bump __FreeBSD_version to 1100000
Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation
union members in strict C99, by giving them names. While here, add some
FreeBSD keywords where they were missing.
Approved by: re (gjb)
Reviewed by: grehan
The device name was incorrect due to a specific function we ported
from the Linux driver that is not FBSD compatible. This resulted
with a false sysctl registration and some more problematic issues.
The patch basically revokes it all together.
Submitted by: Meny Yossefi (menyy mellanox.com)
Approved by: re
illumos change 14172:be36a38bac3d:
illumos ZFS issues:
4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Please note that this change is slightly different from r255257, because
it is merged out of order with other (larger) upstream changes.
PR: kern/182570
Reported by: Keith White <kwhite@site.uottawa.ca>
Tested by: Keith White <kwhite@site.uottawa.ca>
Approved by: re (glebius)
MFC after: 1 week
X-MFC after: r254753
and there are ifnets, that do that via counter(9). Provide a flag that
would skip cache line trashing '+=' operation in ether_input().
Sponsored by: Netflix
Sponsored by: Nginx, Inc.
Reviewed by: melifaro, adrian
Approved by: re (marius)
called. This probably should be fixed eventually, but for now it is
not needed to try to flush such vnodes from the buffer allocation
context.
Reported and tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Approved by: re (gjb)
really belong to it. Such vnodes, with the pointers to other vnodes
v_objects, are typically instantiated by the bypass filesystems.
Invalidating mappings of other vnode pages and the pages is wrong,
since reclamation of the upper vnode does not imply that lower vnode
is reclaimed too.
One of the consequences of the improper reclamation was destruction of
the wired mappings of the lower vnode pages, triggering miscellaneous
assertions in the VM system.
Reported by: John Marshall <john.marshall@riverwillow.com.au>
Tested by: John Marshall <john.marshall@riverwillow.com.au>, pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Approved by: re (gjb)
allocated, but the old table is kept around to handle the case of
threads still performing unlocked accesses to it.
Grow the table exponentially instead of increasing its size by
sizeof(long) * 8 chunks when overflowing. This mode significantly
reduces the total memory use for the processes consuming large numbers
of the file descriptors which open them one by one.
Reported and tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Approved by: re (marius)
- This version has support for the new Intel Avoton systems,
including 2.5Gb support, further it now has IPv6/TSO6 support as
well. Shared code has been updated where necessary as well. Thanks
to my new assistant Eric Joyner for doing the transmit path changes
to bring in the IPv6/TSO6 support. Thanks to Gleb for catching the
one bug and change needed in NETMAP.
Approved by: re
registered simultaneously. Due to topology unlock between the ID allocation
and the bus registration there is a chance that two buses may get the
same IDs. That is supposed reason of lock assertion panic in CAM during
initial bus scanning after new iscsid initiates two sessions same time.
Reported by: trasz
Approved by: re (glebus, marius)
MFC after: 2 weeks
sbdrop_locked() to cut acked mbufs from the socket buffer. Free this
chain a batch manner after the socket buffer lock is dropped.
This measurably reduces contention on socket buffer.
Sponsored by: Netflix
Sponsored by: Nginx, Inc.
Approved by: re (marius)
mbufs, but return chain of free mbufs to a caller. Caller can either reuse
them or return to allocator in a batch manner.
- Implement sbdrop()/sbdrop_locked() as a wrapper around sbcut_internal().
- Expose sbcut_locked() for outside usage.
Sponsored by: Netflix
Sponsored by: Nginx, Inc.
Approved by: re (marius)
* the mips74k cores only need EHB (which is 'sll $0, $0, 3')
here; NOPs don't actually work.
* add EHB as the last NOP for the default barriers/hazards;
that is "better" behaviour and should work on a wider
variety of processors.
This allows the existing (icky) TLB code to work, allowing
the AR9344 SoC (mips74k) to actually get through kernel startup.
Tested:
* AR9344 SoC - (mips74k)
* AR9331 SoC - (mips24k)
TODO:
* test on mips4k CPUs, just to be sure.
* document that sll $0, $0, 3 is actually "EHB" and that it
falls back to being a NOP for pre-mips32r1.
* mips24k has an errata that we currently don't correctly explicitly
state - ie, that after DERET/ERET, the only valid instruction is
a NOP.
Reviewed by: imp@
Approved by: re@ (gjb)
They're both different cores:
* mips24k is an 8-stage pipeline, mips32r1 ABI, non-superscalar core.
* mips74k is a dual-issue 15-stage superscalar design, mips32r2 ABI.
They have different sets of quirks and bugs; these #define entries
will be used to work around these.
Now, strictly speaking, we should have CPU ABI families (mips32r1, mips32r2,
etc) and CPU core types (mips4k, mips24k, mips74k, etc.) But this is the
starting point of that particular tidy-up.
Reviewed by: imp@
Approved by: re@ (gjb)
o Allow this to work with "nodevice random" by fixing where the MALLOC pool is defined.
o Fix the explicit reseed code. This was correct as submitted, but in the project branch doesn't need to set the "seeded" bit as this is done correctly in the "unblock" function.
o Remove some debug ifdeffing.
o Adjust comments.
I replaced the sx_* locks that Arthur used with regular mutexes; this turned out the be the wrong thing to do as the locks need to be sleepable. Revert this folly.
Submitted by: Arthur Mesh <arthurmesh@gmail.com> (In original diff)
extensions, we can change the .byte directives in sys/dev/random/ivy.c
to plain 'rdrand' mnemonics. This already worked for clang users, but
now it will also work for gcc users.
Approved by: re (kib)
Approved by: so (des)
MFC after: 1 week
they occur.
This prevents repeated notifications of the same event.
Status of these events may be viewed at any time by viewing the
SMART/Health Info Page using nvmecontrol, whether or not asynchronous
events notifications for those events are enabled. This log page can
be viewed using:
nvmecontrol logpage -p 2 <ctrlr id>
Future enhancements may re-enable these notifications on a periodic basis
so that if the notified condition persists, it will continue to be logged.
Sponsored by: Intel
Reviewed by: carl
Approved by: re (hrs)
MFC after: 1 week
when calculating stats in nvmecontrol perftest.
Sponsored by: Intel
Reported by: Joe Golio <joseph.golio@emc.com>
Reviewed by: carl
Approved by: re (hrs)
MFC after: 1 week
handlers rather than in the dtrace device open/close methods. The current
approach can cause a panic if the device is closed which the taskqueue
thread is active, or if a kernel module containing a provider is unloaded
while retained enablings are present and the dtrace device isn't opened.
Submitted by: gibbs (original version)
Reviewed by: gibbs
Approved by: re (glebius)
MFC after: 2 weeks
The AR5212 series of MACs implement the same channel counters as the
later 11n chips - except, of course, the 11n specific counter (extension
channel busy.)
This allows users of these NICs to use 'athsurvey' to see how busy their
current channel is.
Tested:
* AR5212, AR2413 NICs, STA mode
Approved by: re@ (gleb)
Add a SYSINIT that forces a reseed during proc0 setup, which happens
fairly late in the boot process.
Add a RANDOM_DEBUG option which enables some debugging printf()s.
Add a new RANDOM_ATTACH entropy source which harvests entropy from the
get_cyclecount() delta across each call to a device attach method.
This means we can't count on /var being present, so something will need to be done about harvesting /var/db/entropy/... .
Some policy now needs to be sorted out, and a pre-sync cache needs to be written, but apart from that we are now ready to go.
Over to review.
Looking pretty good; this mostly works now. New code includes:
* Read cached entropy at startup, both from files and from loader(8) preloaded entropy. Failures are soft, but announced. Untested.
* Use EVENTHANDLER to do above just before we go multiuser. Untested.
been tested. With all sources turned on, this unlocks itself in
a couple of seconds! That is no my box, and there is no guarantee
that this will be the case everywhere.
* Cut debug prints.
* Use the same locks/mutexes all the way through.
* Be a tad more conservative about entropy estimates.
