I/OAT is also referred to as Crystal Beach DMA and is a Platform Storage
Extension (PSE) on some Intel server platforms.
This driver currently supports DMA descriptors only and is part of a
larger effort to upstream an interconnect between multiple systems using
the Non-Transparent Bridge (NTB) PSE.
For now, this driver is only built on AMD64 platforms. It may be ported
to work on i386 later, if that is desired. The hardware is exclusive to
x86.
Further documentation on ioat(4), including API documentation and usage,
can be found in the new manual page.
Bring in a test tool, ioatcontrol(8), in tools/tools/ioat. The test
tool is not hooked up to the build and is not intended for end users.
Submitted by: jimharris, Carl Delsey <carl.r.delsey@intel.com>
Reviewed by: jimharris (reviewed my changes)
Approved by: markj (mentor)
Relnotes: yes
Sponsored by: Intel
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3456
in the parent, we will inherit the pmcids but cannot execute any operations
on them in the child. The reason for this is that pmc_find_pmc() only
tries to find the current process on the owners hash list, but given the
child does not own the attachment, we cannot find it.
Thus, in case the initial lookup fails, try to find the pmc_process state
affiliated with the child process, lookup the pmc from there using the
row index, and get the owner process from that pmc.
Then continue as normal and lookup the pmc context of the owner (process).
This allows us to call, e.g., pmc_start() in the child process before we
start the work there, but to collect the accumulated results later in
the parent.
Sponsored by: DARPA,AFRL
Obtained from: L41
Tested by: rwatson, L41
MFC after: 4 weeks
Reviewed by: gnn
Differential Revision: https://reviews.freebsd.org/D2052
reason this didn't result in an unclean shutdown is that devfs ignores
MNT_FORCE flag.
Reviewed by: kib@
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3467
adjusted. This seems to be the case on all non-x86 architectures libproc
supports.
Reviewed by: kib
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3465
FreeBSD porting notes:
- only kernel-side changes are merged
- the new ioctl is not actually implemented yet
- thus, the goal is to synchronize DMU code
illumos/illumos-gate@2bcf0248e9https://www.illumos.org/issues/5692
we would like to expose the number of hole (sparse) blocks in a file.
this can be useful to for example if you want to fill in the holes with
some data; knowing the number of holes in advances allows you to report
progress on hole filling. We could use SEEK_HOLE to do that but it would
be O(n) where n is the number of holes present in the file.
Author: Max Grossman <max.grossman@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Boris Protopopov <bprotopopov@hotmail.com>
Approved by: Richard Lowe <richlowe@richlowe.net>
timers callouts with r281599."
r281599 fixed a TCP timer race condition, but due a callout(9) bug
it also introduced another race condition workaround-ed with r284245.
The callout(9) bug being fixed with r286880, we can now revert the
workaround (r284245).
Differential Revision: https://reviews.freebsd.org/D2079 (Initial change)
Differential Revision: https://reviews.freebsd.org/D2763 (Workaround)
Differential Revision: https://reviews.freebsd.org/D3078 (Fix)
Sponsored by: Verisign, Inc.
MFC after: 2 weeks
The change that introduced the L2ARC compression support also introduced
a bug where the on-disk size of the selected buffers could end up larger
than the target size if the ashift is greater than 9. This was because
the buffer selection could did not take into account the fact that
on-disk size could be larger than the in-memory buffer size due to
the alignment requirements.
At the moment b_asize is a misnomer as it does not always represent the
allocated size: if a buffer is compressed, then the compressed size is
properly rounded (on FreeBSD), but if the compression fails or it is not
applied, then the original size is kept and it could be smaller than what
ashift requires.
For the same reasons arcstat_l2_asize and the reported used space
on the cache device could be smaller than the actual allocated size
if ashift > 9. That problem is not fixed by this change.
This change only ensures that l2ad_hand is not advanced by more
than target_sz. Otherwise we would overwrite active (unevicted)
L2ARC buffers. That problem is manifested as growing l2_cksum_bad
and l2_io_error counters.
This change also changes 'p' prefix to 'a' prefix in a few places
where variables represent allocated rather than physical size.
The resolved problem could also result in the reported allocated size
being greater than the cache device's capacity, because of the
overwritten buffers (more than one buffer claiming the same disk
space).
This change is already in ZFS-on-Linux:
zfsonlinux/zfs@ef56b0780c
PR: 198242
PR: 195746 (possibly related)
Reviewed by: mahrens (https://reviews.csiden.org/r/229/)
Tested by: gkontos@aicom.gr (most recently)
MFC after: 15 days
X-MFC note: patch does not apply as is at the moment
Relnotes: yes
Sponsored by: ClusterHQ
Differential Revision: https://reviews.freebsd.org/D2764
Reviewed by: noone (@FreeBSD.org)
After fixing the 16-bits integer arithmetic overflow in 286981, we
should also make sure to fix the VPA sequence. Bring HPA and VPA in sync
with how we now implement CUP.
PR: 202612
Reported by: kcwu csie org
MFC after: 1 month
This isn't yet linked into the receive/transmit paths anywhere just yet.
This is part of a GSoC 2015 project.
Submitted by: Tiwei Bie <btw@mail.ustc.edu.cn>
Reviewed by: hiren, gnn
Differential Revision: https://reviews.freebsd.org/D3423
interface but in6if_do_dad() already had a check for IFF_LOOPBACK.
- Remove in6if_do_dad() check in in6_broadcast_ifa(). An address
which needs DAD always has IN6_IFF_TENTATIVE there.
- in6if_do_dad() now returns EAGAIN when the interface is not ready
since DAD callout handler ignores such an interface.
- In DAD callout handler, mark an address as IN6_IFF_TENTATIVE
when the interface has ND6_IFF_IFDISABLED. And Do IFF_UP and
IFF_DRV_RUNNING check consistently when DAD is required.
- draft-ietf-6man-enhanced-dad is now published as RFC 7527.
- Fix some typos.
FDT_DTB_STATIC is defined in opt_platform.h, and fdt_static_dtb is in
fdt_common.h, so include those files.
Sponsored by: Alex Perez/Inertial Computing
An invalid substitution like ${var@} does not cause a parse error but is
stored in the intermediate representation, to be written as part of the
error message. If there is a CTL* byte in the stored part, this confuses
some code such as the code to skip an unused alternative such as in
${var-alternative}.
To keep things simple, do not store CTL* bytes.
Found with afl-fuzz.
MFC after: 1 week
"freebsd-sponsored-by" and "freebsd-mfc-after" in ~/.subversion/config,
in the "[miscellany]" section - just like you already can with
devel/subversion port/package.
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
is configured on a channel that isn't valid in the new operating mode.
This isn't strictly true - it should find the first channel that is
available for the given operating mode.
However, I think defaulting to the first channel is fine - it's typically
available for all modes.
If someone would like to correctly implement this feature - try to
find a channel that is valid for the given operating mode and error
out if we can't find one.
This prevents various NICs (eg wpi(4)) from throwing a firmware error.
Tested:
* ath(4), STA/AP mode
* iwn(4), STA/adhoc mode
PR: kern/202502
Submitted by: Andriy Voskoboinyk <s3erios@gmail.com>
Provide and document the RANDOM_ENABLE_UMA option.
Change RANDOM_FAST to RANDOM_UMA to clarify the harvesting.
Remove RANDOM_DEBUG option, replace with SDT probes. These will be of
use to folks measuring the harvesting effect when deciding whether to
use RANDOM_ENABLE_UMA.
Requested by: scottl and others.
Approved by: so (/dev/random blanket)
Differential Revision: https://reviews.freebsd.org/D3197
Summary:
This is (probably step 1) of enhancing the book-e pmap to support the full
36-bit physical address space on Freescale e500 and e5500 cores.
Thus far it has only been regression tested on one platform. Since I only have
one other Book-E platform (e5500), that needs work beyond this, I haven't yet
tested it on this.
Test Plan: Regression tested on my RouterBoard RB800.
Reviewed By: marcel
Differential Revision: https://reviews.freebsd.org/D3027
Summary:
The RouterBoard uses a predefined partition map which doesn't exist in the fdt.
This change allows overriding the fdt slicer with a custom slicer, and uses this
custom slicer to define the flash map on the RouterBoard RB800.
D3305 converts the mpc85xx platform into a base class, so that systems based on
the mpc85xx platform can add their own overrides. This change builds on D3305,
and creates a RouterBoard (RB800) platform to initialize the slicer override.
Reviewed By: nwhitehorn, imp
Differential Revision: https://reviews.freebsd.org/D3345
Summary:
Some systems are based around mpc85xx, but need special initialization. By
making the mpc85xx platform a base class, these systems can be platform
subclasses, and perform board-specific initialization in addition to the mpc85xx
initialization.
Test Plan:
Tested on my RB800. A platform class was created, and will be committed
separately.
Reviewed By: nwhitehorn
Differential Revision: https://reviews.freebsd.org/D3305
CoDel is a parameterless queue discipline that handles variable bandwidth
and RTT.
It can be used as the single queue discipline on an interface or as a sub
discipline of existing queue disciplines such as PRIQ, CBQ, HFSC, FAIRQ.
Differential Revision: https://reviews.freebsd.org/D3272
Reviewd by: rpaulo, gnn (previous version)
Obtained from: pfSense
Sponsored by: Rubicon Communications (Netgate)
