In lkpi_stop_hw_scan() we have to unlock around cancelling the
hardware scan and an msleep to wait for the confirmation that the
scan ended. Otherwise we are sleeping with the non-sleepable
net80211 com lock held. At the same time we need to hold the lhw
lock for the msleep().
This lock change got lost in the refactoring of lkpi_iv_newstate().
Reported by: ambrisko, delphij
PR: 261075
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
swap parameter is not supported as it is rarely used in Linux kernel
and its implementation will add some preprocessor spaghetti to qsort.
Required by drm-kmod.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D33675
compile time assertion on non-NULL pointers. Tests conducted show that
_Static_assert, negative array size method and current code does not
handle pointers well enough. Bit field method solves this problem.
This change is derrived from Linux implementation of BUILD_BUG_ON_ZERO.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D33674
They are superseded by PAT and mostly useless nowadays but still can be
used on Pentium III/IV era processors. Unlike drm-kmod version, this one
ignores MTRR if PAT is available that fixes confusing "Failed to add WC
MTRR for [0xXXXX-0xYYYY]: 22; performance may suffer" message often
appearing during drm-kmod initialization process.
MFC after: 1 week
Reviewed by: hselasky, manu
Differential Revision: https://reviews.freebsd.org/D33561
efi_enabled(EFI_BOOT) returns true if machine was booted from EFI
Used by drm-kmod and some unported drm drivers like hyperv
MFC after: 1 week
Reviewed by: hselasky, manu
Differential Revision: https://reviews.freebsd.org/D33300
Obsolete it usage but keep for a while for drm-kmod 5.4 compatibility
MFC after: 1 week
Reviewed by: hselasky, manu
Differential Revision: https://reviews.freebsd.org/D33298
Add more (dummy in case of HE) defines, structs, functions and another
mac80211 function pointer needed to update and support recent drivers.
MFC after: 3 days
Add or extend the already existing *_replace_bits() implementations
using macros as we do for the other parts in the file for
le<n>p_replace_bits(), u<n>p_replace_bits(), and _u<n>_replace_bits().
MFC after: 3 days
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D33799
Add a hex2bin() implementation needed by a driver's debugfs code.
MFC after: 3 days
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D33798
Fix the spelling of IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_*
(was "NOMIMAL"). The original version came from iwlwifi
in iwlwifi-next. Other drivers (from wireless-testing) already
use the correct spelling and need this change in LinuxKPI.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
We never initialized hw->conf.flags for IEEE80211_CONF_IDLE but
on set_channel we would clear it and announce a change.
This lead to a problem that drivers may do some work every time
which was not needed and may lead to unexpected behaviour (for no
better driver code).
Properly initialize conf.flags with IEEE80211_CONF_IDLE.
Factor out the toggling into a function and clear IDLE while
sw scanning and when associated and set again when scan ends
or we are bouncing out of assoc.
MFC after: 3 days
Simplify control flow around handling of the execpath length and signal
trampoline. Cache the sysentvec pointer in a local variable.
No functional change intended.
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33703
We are using a bandaid to wait for queues after station creation
looping and pausing.
The abort condition was looping in the wrong direction so we were
potentially waiting forever if queues never became ready.
From initial user test data we also found that the wait time was
too low in some cases so increase the length.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Add 802.11 compat code for mac80211 and to a minimal degree cfg80211.
This allows us to compile and use basic functionality of wireless
drivers such as iwlwifi.
This is a constant work in progress but having it in the tree will
allow others to test and more easy to track changes and avoid having
snapshots no longer applying to branches.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Import a netdevice update complementing the last remaining bits of
the old ifnet derived implementation. Along add a (for now) task
based NAPI implementation.
This is the minimal set of chnages which are needed for the initial
support of wireless drivers. The NAPI implementation has an option to
still switch to "direct dispatch" as it had been used by these drivers
before not relying on a deferred context along with some printf tracing.
This has been helpful in the last weeks for debugging and will be
cleaned once we have had broader testing and are sure this is fine as-is.
Should we need a more time-sensitive or load-sensitive response
in the future we can always switch to something more sophisticated.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
X-Differential Revision: D33075 (abandoned without feedback a while ago)
This is a work-in-progress implementation of sk_buff compat code
used for wireless drivers only currently.
Bring in this version of the code as it has proven to be good enough
to have packets going for a few months.
The current implementation has several drawbacks including the need
for us to copy data between sk_buffs and mbufs.
Do not rely on the internals of this implementation. They are highly
likely to change as we will improve the integration to FreeBSD mbufs.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Create a wrapper for newbus to take giant and for busses to take it too.
bus_topo_lock() should be called before interacting with newbus routines
and unlocked with bus_topo_unlock(). If you need the topology lock for
some reason, bus_topo_mtx() will provide that.
Sponsored by: Netflix
Reviewed by: mav
Differential Revision: https://reviews.freebsd.org/D31831
With various firmware files used by graphics and wireless drivers
we are exceeding the current 32 character module name (file path
in kldxref) length.
In order to overcome this issue bump it to the maximum path length
for the next version.
To be able to MFC provide backward compat support for another version
of the struct as the offsets for the second half change due to the
array size increase.
MAXMODNAME being defined to MAXPATHLEN needs param.h to be
included first. With only 7 modules (or LinuxKPI module.h) not
doing that adjust them rather than including param.h in module.h [1].
Reported by: Greg V (greg unrelenting.technology)
Sponsored by: The FreeBSD Foundation
Suggested by: imp [1]
MFC after: 10 days
Reviewed by: imp (and others to different level)
Differential Revision: https://reviews.freebsd.org/D32383
that returns struct kinfo_file for the given file descriptor. Among
other data, it also returns kf_path, if file op was able to restore file
path.
Reviewed by: jhb, markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33277
