Stefan Eßer [Sat, 31 Oct 2020 23:48:41 +0000 (23:48 +0000)]
Make sysctl user.local a tunable that can be written at run-time
This sysctl value had been provided as a read-only variable that is
compiled into the C library based on the value of _PATH_LOCALBASE in
paths.h.
After this change, the value is compiled into the kernel as an empty
string, which is translated to _PATH_LOCALBASE by the C library.
This empty string can be overridden at boot time or by a privileged
user at run time and will then be returned by sysctl.
When set to an empty string, the value returned by sysctl reverts to
_PATH_LOCALBASE.
This update does not change the behavior on any system that does
not modify the default value of user.localbase.
I consider this change as experimental and would prefer if the run-time
write permission was reconsidered and the sysctl variable defined with
CLFLAG_RDTUN instead to restrict it to be set at boot time.
Add plug and play information macroses for ACPI and I2C buses.
Matching table format is compatible with ACPI_ID_PROBE bus method.
Note that while ACPI_ID_PROBE matches against _HID and all _CIDs, current
acpi_pnpinfo_str() exports only _HID and first _CID. That means second
and further _CIDs should be added to both acpi_pnpinfo_str() and
ACPICOMPAT_PNP_INFO if device matching against them is required.
Brandon Bergren [Sat, 31 Oct 2020 21:11:34 +0000 (21:11 +0000)]
Fix 32-bit build after r367229.
The use of atomic_sub_64() in zfs_zstd.c was breaking the 32-bit build on
platforms without native 64-bit atomics due to atomic_sub_64() not being
available, and no fallback being provided in _STANDALONE.
Provide a standalone stub to match atomic_add_64() using simple math.
While this is not actually atomic, it does not matter in libsa context,
since it always runs single-threaded and does not run under a scheduler.
- Use ACPI style for _DSM evaluation helper parameter types.
- Constify UUID parameter.
- Increase size of returned DSM function bitmap by acpi_DSMQuery() up to 64
items. Old limit of 8 functions is not sufficient for JEDEC JESD245 NVDIMMs.
- Add new acpi_EvaluateDSMTyped() helper which performs additional return
value type check as compared with acpi_EvaluateDSM().
- Reimplement acpi_EvaluateDSM() on top of the acpi_EvaluateDSMTyped() call.
Reviewed by: scottph, manu
Differential Revision: https://reviews.freebsd.org/D26602
Note that this only tracks sizes as requested by the caller.
Actual allocated space will almost always be bigger (e.g., rounded up to
the next power of 2 or page size). Additionally the allocated buffer may
be holding other areas hostage. Nonetheless, this is a starting point
for tracking memory usage in zstd.
Stefan Eßer [Sat, 31 Oct 2020 16:39:27 +0000 (16:39 +0000)]
Mention the more strict consistency checks performed by calendar(), which
can make the program abort with an error message on previously accepted
but malformed input files.
Stefan Eßer [Sat, 31 Oct 2020 15:11:24 +0000 (15:11 +0000)]
Improve calendar file parsing and consistency tests
Add line number information to more warning and error messages.
Detect #else and #endif without corresponing #ifdef/#ifndef as error.
Detect missing #endif at end of file and print warning but continue.
Support for #undef has been added to reverse the effect of a prior #define.
It is no error if the argument value has not been defined before.
These changes may cause error aborts on malformed input files (e.g. with
spurious #else or #endif), but no such errors exist in the calendar files
in the FreeBSD base system and the calendar-data port and all tests pass.
More tests will be added in a follow-up commit to detect regressions that
might affect the newly added features.
This commit ends a series of updates that enhance the pre-processor and
make it behave much more like prior versions of the calendar progarm that
called cpp to pre-process the data files.
Colin Percival [Sat, 31 Oct 2020 03:36:31 +0000 (03:36 +0000)]
Attempt to defuse a land mine before anyone else steps on it: The
freebsd-boot partition is not always the first one.
Following the instructions in UPDATING resulted in my overwriting
the efiboot0 partition on my laptop with ZFS boot blocks, which
had negative effects on the system's bootability.
Warner Losh [Fri, 30 Oct 2020 22:00:35 +0000 (22:00 +0000)]
Integrate 4.4BSD-Lite2 changes to IOC_* definitions
Bring in the long-overdue 4.4BSD-Lite2 rev 8.3 by cgd of
sys/ioccom.h. This uses UL suffix for the IOC_* constants so they
don't sign extend. Also bring in the handy diagram from NetBSD's
version of this file. This alters the 4.4BSD-Lite2 code slightly
in a way that's semantically the same but more compact.
This should stop the warnings from Chrome for bogus sign extension.
Conrad Meyer [Fri, 30 Oct 2020 19:02:59 +0000 (19:02 +0000)]
linux(4): Quiesce warning about madvise(..., -1)
This API misuse is intended to produce an error value to detect certain
bogus stub implementations of MADV_WIPEONFORK. We don't need to log a
warning about it.
Conrad Meyer [Fri, 30 Oct 2020 19:00:42 +0000 (19:00 +0000)]
UFS2: Fix DoS due to corrupted extattrfile
Prior versions of FreeBSD (11.x) may have produced a corrupt extattr file.
(Specifically, r312416 accidentally fixed this defect by removing a strcpy.)
CURRENT FreeBSD supports disk images from those prior versions of FreeBSD.
Validate the internal structure as soon as we read it in from disk, to
prevent these extattr files from causing invariants violations and DoS.
Attempting to access the extattr portion of these files results in
EINTEGRITY. At this time, the only way to repair files damaged in this way
is to copy the contents to another file and move it over the original.
PR: 244089
Reported by: Andrea Venturoli <ml AT netfence.it>
Reviewed by: kib
Discussed with: mckusick (earlier draft)
Security: no
Differential Revision: https://reviews.freebsd.org/D27010
Stefan Eßer [Fri, 30 Oct 2020 18:48:09 +0000 (18:48 +0000)]
Add read only sysctl variable user.localbase
The value is provided by the C library as for other sysctl variables in
the user tree. It is compiled in and returns the value of _PATH_LOCALBASE
defined in paths.h.
Mitchell Horne [Fri, 30 Oct 2020 18:22:46 +0000 (18:22 +0000)]
arm64: set the correct partition type in make-memstick.sh
We create a UFS root filesystem using makefs(8), and later pass it to
mkimg(1) when creating the final image. The correct partition type is
freebsd-ufs; the freebsd parition type is for partitions containing a
BSD disklabel.
Reviewed by: emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26987
Mitchell Horne [Fri, 30 Oct 2020 18:20:52 +0000 (18:20 +0000)]
arm64: convert virtual machine images to GPT
These images were switched to MBR in r281876 as a way to cope with a
hard-coded partition GUID in QEMU's default EFI firmware. Enough time
has passed that this is no longer a problem; QEMU versions >= 4.0
include a copy of edk2 EFI firmware that can detect the root filesystem
properly. Alternatively, sysutils/u-boot-qemu-arm64 can be used.
Switch back to building these images with a GPT partition table, and
re-enable the swap partition.
Reviewed by: gjb, emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26986
Mitchell Horne [Fri, 30 Oct 2020 18:18:25 +0000 (18:18 +0000)]
vmimage.subr: noisier failure for unsupported targets
The return code of write_partition_layout() doesn't bubble up, so an
invocation of make vm-release for an incorrect/unsupported target will
appear to succeed while make vm-install will fail due to missing
files. This isn't a common point of failure, but is worth handling
properly.
Upgrade this case to print a message to stderr, and exit in place. This
is okay to do since at this point in the execution of mk-vmimage.sh,
cleanup() has already been run.
Stefan Eßer [Fri, 30 Oct 2020 10:44:46 +0000 (10:44 +0000)]
Re-implement comment parsing missing in the internal pre-processor
The internal pre-processor ignored lines that did not parse a calendar
entries, but did not support multi-line comments in the way the external
cpp did.
The calendar files distributed with the base system (now in a port) do
use comments, though.
Implement comment processing for single-line (//) and multi-line comments
(/* */) with same semantics as in a standard C pre-processor.
All tests pass with this version, but there are no tests that specifically
verify comment processing.
Reported by: jhs@berklix.com (Julian H. Stacey)
MFC after: 3 days
beinstall.sh: Use bectl instead of beadm by default
This patch also introduces an environment variable BE_UTILITY,
which can be used to specify the utility to use for managing
ZFS boot environments (which can be either bectl or beadm).
While here, fix some typos in the manual page and
remove beadm from section "SEE ALSO".
Olivier Cochard [Fri, 30 Oct 2020 00:03:59 +0000 (00:03 +0000)]
bhyve currently reports each of "smbios.system.maker" and
"smbios.system.family" as " ".
This presents challenges for both humans and tools when trying to parse output
that uses those results.
The new values reported are now:
smbios.system.family="Virtual Machine"
smbios.system.maker="FreeBSD"
John Baldwin [Thu, 29 Oct 2020 22:22:27 +0000 (22:22 +0000)]
Use public interfaces to manage the nested rate limit send tag.
Each TLS send tag in mlx5 contains a nested rate limit send tag.
Previously, the driver was calling internal functions to manage the
nested tag. Calling free methods directly instead of m_snd_tag_rele()
leaked send tag references and references on the ifp. Changes to use
the ifp methods for the nested tag for other methods are more cosmetic
but do simplify the code.
John Baldwin [Thu, 29 Oct 2020 22:16:59 +0000 (22:16 +0000)]
Remove an extra if_ref().
In r348254, if_snd_tag_alloc() routines were changed to bump the ifp
refcount via m_snd_tag_init(). This function wasn't in the tree at
the time and wasn't updated for the new semantics, so was still doing
a separate bump after if_snd_tag_alloc() returned.
Add defines for Linux errno values and use them to make linux_errtbl[]
more readable. While here, add linux_check_errtbl() function to make
sure we don't leave holes.
No objections: emaste (earlier version)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26972
Stefan Eßer [Thu, 29 Oct 2020 08:26:38 +0000 (08:26 +0000)]
Fix calendar -a processing of files included in the user's home directory
The existing code performed a chdir() into the home directory, but the
parser fell back to using the invoking user's home directory as the base
directory for the search for an include file.
Since use of the -a option is limited to UID==0, the directory searched
was typically ~root/.calendar, not the .calendar directory of the user
whose file is being processed.
Ed Maste [Thu, 29 Oct 2020 02:02:30 +0000 (02:02 +0000)]
CI: switch to qemu42 package
It appears that booting FreeBSD from qemu's synthesized FAT filesystem
broke somehow in a recent qemu-devel update. qemu42 works so switch to
it for now.
John Baldwin [Thu, 29 Oct 2020 00:23:16 +0000 (00:23 +0000)]
Support hardware rate limiting (pacing) with TLS offload.
- Add a new send tag type for a send tag that supports both rate
limiting (packet pacing) and TLS offload (mostly similar to D22669
but adds a separate structure when allocating the new tag type).
- When allocating a send tag for TLS offload, check to see if the
connection already has a pacing rate. If so, allocate a tag that
supports both rate limiting and TLS offload rather than a plain TLS
offload tag.
- When setting an initial rate on an existing ifnet KTLS connection,
set the rate in the TCP control block inp and then reset the TLS
send tag (via ktls_output_eagain) to reallocate a TLS + ratelimit
send tag. This allocates the TLS send tag asynchronously from a
task queue, so the TLS rate limit tag alloc is always sleepable.
- When modifying a rate on a connection using KTLS, look for a TLS
send tag. If the send tag is only a plain TLS send tag, assume we
failed to allocate a TLS ratelimit tag (either during the
TCP_TXTLS_ENABLE socket option, or during the send tag reset
triggered by ktls_output_eagain) and ignore the new rate. If the
send tag is a ratelimit TLS send tag, change the rate on the TLS tag
and leave the inp tag alone.
- Lock the inp lock when setting sb_tls_info for a socket send buffer
so that the routines in tcp_ratelimit can safely dereference the
pointer without needing to grab the socket buffer lock.
- Add an IFCAP_TXTLS_RTLMT capability flag and associated
administrative controls in ifconfig(8). TLS rate limit tags are
only allocated if this capability is enabled. Note that TLS offload
(whether unlimited or rate limited) always requires IFCAP_TXTLS[46].
Brooks Davis [Wed, 28 Oct 2020 23:10:54 +0000 (23:10 +0000)]
Disable ssp raw test without ASAN
r366981 disabled ASAN when it might not be reliable (with an external
compiler), but this test is broken without ASAN so disable it completely
in that case.
Check for process group change in tty_wait_background().
The calling process's process group can change between PROC_UNLOCK(p)
and PGRP_LOCK(pg) in tty_wait_background(), e.g. by a setpgid() call
from another process. If that happens, the signal is not sent to the
calling process, even if the prior checks determine that one should be
sent. Re-check that the process group hasn't changed after acquiring
the pgrp lock, and if it has, redo the checks.
Warner Losh [Wed, 28 Oct 2020 21:18:04 +0000 (21:18 +0000)]
loader: add aarch64 support for zstd
We don't have NEON available in the boot loader, so we have to disable
it. OpenZFS included ZSTD which used the wrong symbol to bring in neon
support. Change to use the code that's been submitted upstream as a
pull request to both.
__ARM_NEON is the proper symbol, defined in ARM C Language Extensions
Release 2.1 (https://developer.arm.com/documentation/ihi0053/d/). Some
sources suggest __ARM_NEON__, but that's the obsolete spelling from
prior versions of the standard.
Warner Losh [Wed, 28 Oct 2020 21:09:56 +0000 (21:09 +0000)]
Note that sys/systm.h is special too
If you need / want to includerd sys/systm.h, it has to be just after
param.h/types.h. Document this existing practice. Not all kernel files
include systm.h, but when you do, it should be done out of order.
Code was supposed to call callout_reset_sbt_on() rather than
callout_reset_sbt(). This resulted into passing a "cpu" value
to a "flag" argument. A recipe for subtle errors.
Alexander Motin [Wed, 28 Oct 2020 17:28:48 +0000 (17:28 +0000)]
Use proper variable for device path.
It seems *-passthru commands were broken from the day one, since the
device path is fetched into opt.dev variable and not left in argv[optind].
The other three wrong argv[optind] instances are just in error messages.
Stefan Eßer [Wed, 28 Oct 2020 14:48:58 +0000 (14:48 +0000)]
Add support for nested conditionals
The previous behavior was to support nested #ifdef and #ifndef, but to
return to unconditional parsing after the next #endif, independently of
the number of previously parsed conditions.
E.g. after "#ifdef A / #ifdef B / #endif" the following lines were
unconditially parsed again, independently of A and/or B being defined.
The new behavior is to count the level of false conditions and to only
restart parsing of calendar entries when the corresponding number of
#endif tokens have been seen.
In addition to the above, an #else directive has been added, to toggle
between parsing and ignoring of the following lines.
No validation of the correct use of the condition directives is made.
#endif without prior #define or #ifndef is ignored and #else toggles
between parsing and skipping of entries.
The MFC period has been set to 1 month to allow for a review of the
changes and for a discussion, whether these modifications should not
be merged at all.
No correct input file is parsed differently than before, but if calendar
data files are published that use these new features, those data files
will not parse correctly on prior versions of this program.
Drop "All rights reserved" from all my stuff. This includes
Foundation copyrights, approved by emaste@. It does not include
files which carry other people's copyrights; if you're one
of those people, feel free to make similar change.
Stefan Eßer [Wed, 28 Oct 2020 13:30:24 +0000 (13:30 +0000)]
Fix off-by-one error in processing of #ifdef lines
The convention in this program is to parse the line immediately starting
after the token (e.g. #defineA and #ifdefA define respectively look-up "A"),
and this commit restores this behavior instead of skipping an assumed
white-space character following #ifdef.
Stefan Eßer [Wed, 28 Oct 2020 13:06:39 +0000 (13:06 +0000)]
Fix parsing of #ifdef in calendar files
There was code to process an #ifndef tokens, but none for #ifdef.
The #ifdef token was mentioned as unsupported in the BUGS section,
but no reason was given and I do not see why it should stay omitted.
Misleading information in The BUGS section of the man-page regarding
the maximum number of #define and #include statements supported has
been removed. These limits might have applied to a prior version of
this program, but do not seem to apply to the current implementation.
I have not tried to test for the existence of the limits, but the
include file processing just recursively calls the parser (without
counting the recursion depth) and the stringlist functions do not
impose a limit on the number of entries.
Alex Richardson [Wed, 28 Oct 2020 11:54:09 +0000 (11:54 +0000)]
Speed up Cirrus CI by using CROSS_TOOLCHAIN
Installing the llvm11 package instead of bootstrapping it from the source
tree reduces the build time by about 20 minutes.
The last freebsd/freebsd build that was tested (r366629) took 1h 21m 22s,
whereas my GitHub fork with this .cirrus.yml took 58m 6s.
We could probably further reduce time by using images that have LLVM
pre-installed: the pkg install step took 4 minutes 30s.
Since the bootstrap toolchain is still tested by Jenkins, this should not
reduce test coverage of the CI testing.
Alex Richardson [Wed, 28 Oct 2020 11:54:04 +0000 (11:54 +0000)]
Significantly reduce compile time for googletest internal tests
Clang's optimizer spends a really long time on these tests at -O2, so we now
use -O0 instead. This reduces the -j32 time for lib/googletest/test from 131s
to 29s. Using -O0 also reduces the disk usage from 144MB (at -O2) / 92MB (at
-O1) to 82MB.
Reviewed By: ngie, dim
Differential Revision: https://reviews.freebsd.org/D26751
The way netmap TX is handled in iflib when TX interrupts are not
used (IFC_NETMAP_TX_IRQ not set) has some issues:
- The netmap_tx_irq() function gets called by iflib_timer(), which
gets scheduled with tick granularity (hz). This is not frequent
enough for 10Gbps NICs and beyond (e.g., ixgbe or ixl). The end
result is that the transmitting netmap application is not woken
up fast enough to saturate the link with small packets.
- The iflib_timer() functions also calls isc_txd_credits_update()
to ask for more TX completion updates. However, this violates
the netmap requirement that only txsync can access the TX queue
for datapath operations. Only netmap_tx_irq() may be called out
of the txsync context.
This change introduces per-tx-queue netmap timers, using microsecond
granularity to ensure that netmap_tx_irq() can be called often enough
to allow for maximum packet rate. The timer routine simply calls
netmap_tx_irq() to wake up the netmap application. The latter will
wake up and call txsync to collect TX completion updates.
This change brings back line rate speed with small packets for ixgbe.
For the time being, timer expiration is hardcoded to 90 microseconds,
in order to avoid introducing a new sysctl.
We may eventually implement an adaptive expiration period or use another
deferred work mechanism in place of timers.
Also, fix the timers usage to make sure that each queue is serviced
by a different CPU.
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