The daemonfd function is equivalent to the daemon(3) function expect that
arguments are descriptors. For example dhclient(8) which is sandboxed is
unable to open /dev/null to close stdio instead it's allows to fail
daemon(3) function to close the descriptors and then do it explicit in code.
Instead of such hacks we can use now daemonfd.
This API can be also helpful to migrate system to platforms like CheriBSD.
Reviewed by: brooks@, bcr@, jilles@ (earlier version)
Differential Revision: https://reviews.freebsd.org/D13433
clang does not know that two lookup calls will return the same
pointer, so it assumes correctly that using the old pointer
after dropping the reference to it is a bit risky.
Sometimes caller is only interested in how many clones
are there and NULL pointer is passed for the destination
buffer. Do not pass it to copyout then.
if_clone_attach function will drop the reference on failure which will
free the if_clone structure. No need to do it second time.
Reviewed by: glebius, ae
Differential Revision: https://reviews.freebsd.org/D10386
This should help reduce confusion between syscon/syscons a little bit.
syscon is a resource generally modeled by FDT platforms, and not to be
confused with syscons.
Allow more flexibility by kobj'ifying syscon and splitting out fdt specific
bits in preparation of a move to the extres framework.
The generic fdt driver has been moved to syscon_generic.c and the fdt
requirement has been removed from the syscon interface, as is common to the
extres framework.
Reviewed by: strejda
Differential Revision: https://reviews.freebsd.org/D13521
ISA PNP card support (replace by hand version in if_ed). Move module
declarations to the end of some files. Fix PCCARD_PNP_INFO to use
nitems(). Remove some stale comments about pc98, turns out the comment
was simply wrong.
about CIS3/CIS4, including studies I've done on my large collection of
PC Cards bought off e-bay over the years since the original entry as
well as conversations I've had at conferences.
The only users of the functions were db_read_bytes() and
db_write_bytes() ddb(4) interfaces. Replace the calls with direct
reads and writes, which are automatically atomic on 64bits and n32.
Note that removed assembler implementation for mips32 is not atomic
anyway.
Reviewed by: jhb
Discussed with: imp
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D13586
leaves the firmware event queue (fwq) as the only queue that can take
interrupts for others.
This simplifies cfg_itype_and_nqueues and queue allocation in the driver
at the cost of a little (never?) used configuration. It also allows
service_iq to be split into two specialized variants in the future.
MFC after: 2 months
Sponsored by: Chelsio Communications
While the BSD-2-Clause license is there, the GPLv2 is also present.
I am unsure of the implications of having both licenses as they are here.
I'll just leave it untagged and open for interpretation.
and atomic_store_64.
The MD definitions are provided for LP64 only, while mips also uses
them for 32bit and n32. Only define mips variants for 32bit and n32
and change the syntax to match common definitions.
Note that this commit does not fix 32bit asm implementation to follow
new KBI, this will be fixed later. The functions are only used for 8
byte ddb accesses so the known bug does not prevent normal kernel
operations.
Sponsored by: The FreeBSD Foundation
gcc complaints that the comparision is always false due to the value
range, and the cast does not prevent the analysis. Split the LP64
vs. ILP32 clamping as a workaround.
Sponsored by: The FreeBSD Foundation
Fix adding and removing files with git-style a/ b/ diffs: only skip
six letters if they actually match "--- a/" and "+++ b/" instead of
laxer checks.
Obtained from: OpenBSD (CVS 1.59)
This patch allows to scan all display modes in boot1 as loader does.
Before system tried to select optimal display mode by sequential scan of
modes and if error then stop scanning. This way is not good, because
if mode N is not present, mode N+1 may exist.
In loader we use conout->Mode->MaxMode to identify maximum number of modes.
This commit is to use same way in boot1 as in loader.
Reported by: Andrey Pustovetov <andrey.pustovetov@gmail.com>
Reviewed by: tsoome
Differential Revision: https://reviews.freebsd.org/D13541
The system call convention is different from i386 binaries running on
FreeBSD/amd64, but this is not noticeable by executables. On
FreeBSD/amd64, the vDSO already does padding of arguments and return
values to 64-bit values. On i386, it does not, meaning that system call
return values are simply stored in registers.
restart_cpus() worked well enough by accident. Before this set of fixes,
resume_cpus() used the same cpuset (started_cpus, meaning CPUs directed to
restart) as restart_cpus(). resume_cpus() waited for the wrong cpuset
(stopped_cpus) to become empty, but since mixtures of stopped and suspended
CPUs are not close to working, stopped_cpus must be empty when resuming so
the wait is null -- restart_cpus just allows the other CPUs to restart and
returns without waiting.
Fix resume_cpus() to wait on a non-wrong cpuset for the ACPI case, and
add further kludges to try to keep it working for the XEN case. It
was only used for XEN. It waited on suspended_cpus. This works for
XEN. However, for ACPI, resuming is a 2-step process. ACPI has already
woken up the other CPUs and removed them from suspended_cpus. This
fix records the move by putting them in a new cpuset resuming_cpus.
Waiting on suspended_cpus would give the same null wait as waiting on
stopped_cpus. Wait on resuming_cpus instead.
Add a cpuset toresume_cpus to map the CPUs being told to resume to keep
this separate from the cpuset started_cpus for mapping the CPUs being told
to restart. Mixtures of stopped and suspended/resuming CPUs are still far
from working. Describe new and some old cpusets in comments.
Add further kludges to cpususpend_handler() to try to avoid breaking it
for XEN. XEN doesn't use resumectx(), so it doesn't use the second
return path for savectx(), and it goes from the suspended state directly
to the restarted state, while ACPI resume goes through the resuming state.
Enter the resuming state early for all cases so that resume_cpus can test
for being in this state and not have to worry about the intermediate
!suspended state for ACPI only.
Reviewed by: kib
have access to machines that are pushing 400 devices. When 1,000 was
selected, it was rare to get even 40 or 50 devices. Bump the limit by
10x to keep up with the times.
Sponsored by: Netflix
It seems that tcp_lro_rx() doesn't verify TCP checksums, so
if there are bad checksums in the packets caused by invalid data, the
invalid data will pass through without errors.
This was noticed with the igb driver and a specific internet host:
fetch http://www.mpfr.org/mpfr-current/mpfr-3.1.6.tar.xz -o test.bin && sha256 test.bin
Would result in a different value sometimes.
This ends up making LRO require RXCSUM to be enabled, and RXCSUM to
support TCP and UDP checksums.
PR: 224346
Reported by: gjb
Reviewed by: sbruno
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D13561
The real kernel page tables are set up much earlier in initarm() now than
they were when early printf support was first added, and they end up undoing
the mapping made in locore.S for early printf support. This re-adds the
mapping after switching to the new/real kernel page tables, making early
printf work again right after switching to them.
After consultation with SPDX experts and their matching guidelines[1],
the licensing doesn't exactly match the BSD-2-Clause. It yet remains to be
determined if they are equivalent or if there is a recognized license that
matches but it is safer to just revert the tags.
Let this also be a reminder that on FreeBSD, SPDX tags are only advisory
and have no legal value (but IANAL).
Pointyhat to: pfg
Thanks to: Rodney Grimes, Gary O'Neall
[1] https://spdx.org/spdx-license-list/matching-guidelines
