in the delayed attach to use early returns, which allows reducing the level
of indentation. So all in all, what looks like a lot of changes is really
no change in behavior, mostly just moving whitespace around.
A big security advantage of Wayland is not allowing applications to read
input devices all the time. Having /dev/input/* accessible to the user
account subverts this advantage.
libudev-devd was opening the evdev devices to detect their types (mouse,
keyboard, touchpad, etc). This don't work if /dev/input/* is inaccessible.
With the kernel exposing this information as sysctls (kern.evdev.input.*),
we can work w/o /dev/input/* access, preserving the Wayland security model.
Submitted by: Greg V <greg@unrelenting.technology>
Reviewed by: wulf, imp
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D18694
Add support for simple NVDIMM v1.2 namespaces from the UEFI
version 2.7 specification. The combination of NVDIMM regions and
labels can lead to a wide variety of namespace layouts. Here we
support a simple subset of namespaces where each NVDIMM SPA range
is composed of a single region per member dimm.
Submitted by: D Scott Phillips <d.scott.phillips@intel.com>
Discussed with: kib
MFC after: 1 week
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D18736
When attaching to NVDIMM devices, read and verify the namespace
labels from the special namespace label storage area. A later
change will expose NVDIMM namespaces derived from this label data.
Submitted by: D Scott Phillips <d.scott.phillips@intel.com>
Discussed with: kib
MFC after: 1 week
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D18735
Separate code for exposing a device backed by a system physical
address range away from the NVDIMM spa code. This will allow a
future patch to add support for NVDIMM namespaces while using the
same device code.
Submitted by: D Scott Phillips <d.scott.phillips@intel.com>
Reviewed by: bwidawsk
MFC after: 1 week
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D18736
A pointer is first tested for NULL. If non-NULL, another pointer is
set equal to the first. The second pointer is then checked for NULL
and an error path taken if so. This second test and the associated
path is dead code as the pointer value, having just been checked for
NULL, cannot be NULL at this point. Remove the dead code.
Reported by: Coverity
Reviewed by: daniel.william.ryan_gmail.com, vangyzen
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D19165
First remove ifdefs of the unsupported option SC_DUMB_TERMINAL which
prevented building using both in the same kernel and broke regression
tests. This option will be replaced by per-emulator supported options.
The dumb emulator rotted with KSE in r83366, but usually compiled since
it is ifdefed to nothing unless SC_DUMB_TERMINAL is defined. The type
of an unused function parameter changed.
Both emulators rotted when 2 new methods were added while the emulators
were removed. Only null methods are needed, but null function pointers
give panics instead.
The wildcard in the default for the unsupported option SC_DFLT_TERM
never really worked. It tends to prefer the dumb emulator when multiple
emulators are configured. Change it to prefer scteken for compatibility.
- Do not explicitly count active descriptors. It allows hardware reset
to happen while device is still referenced, plus simplifies locking.
- Do not stop/start callout each time the queue becomes empty. Let it
run to completion and rearm if needed, that is much cheaper then to touch
it every time, plus also simplifies locking.
- Decouple submit and cleanup locks, making driver reentrant.
- Avoid memory mapped status register read on every interrupt.
- Improve locking during device attach/detach.
- Remove some no longer used variables.
Reviewed by: cem
MFC after: 1 week
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D19231
Its a hack, we can't know/list all DMA engines, but this covers all
I/OAT of Xeon E5/E7 at least from Sandy Bridge till Skylake I saw.
MFC after: 1 week
Sponsored by: iXsystems, Inc.
will be committed later.
The "sc" emulator has the advantages of full support for cons25 and running
about 8 times faster than teken (for writing to the frame buffer).
The "dumb" emulator has the advantage of being simple.
Runtime choice of the emulator is good, but compile time choice is bad.
Per discussions on arch@ and elsewhere, the maintenance of this code
has moved to the drm-kmod and drm-legacy-kmod ports. Remove the i915
and radeon drivers from the tree.
Approved by: graphics team
Reviewed by: manu@, mmel@
Differential Revision: https://reviews.freebsd.org/D19196
Retire the drm modules / drivers. These are now handled by the
drm-legacy-kmod port and/or the drm-kmod port. All future
development and maintanace will be handled there.
Approved by: graphics team
Reviewed by: manu@, mmel@
Differential Revision: https://reviews.freebsd.org/D19196
This change adds a counter (kqueue_users) to keep track of how many
kqueue users are referencing a given struct nm_selinfo.
In this way, nm_os_selwakeup() can schedule the kevent notification
task only when kqueue is actually being used.
This is important to avoid wasting CPU in the common case where
kqueue is not used.
Reviewed by: Aleksandr Fedorov <aleksandr.fedorov@itglobal.com>
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D19177
In out of order mode Rx buffer are accesses by req_id.
Accessing and validating mbuf using ntc is causing false error.
Increase driver revision after latest RX OOO completion fixes.
Submitted by: Rafal Kozik <rk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon, Inc.
MFC after: 1 week
Requested ID should be validated when the packet is received and not
when the driver is repopulating the mbufs.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon, Inc.
MFC after: 1 week
Don't use a struct if_irq for IFLIB_INTR_IOV type interrupts since that results
in get_core_offset() being called on them, and get_core_offset() doesn't
handle IFLIB_INTR_IOV type interrupts, which results in an assert() being triggered
in iflib_irq_set_affinity().
PR: 235730
Reported by: Jeffrey Pieper <jeffrey.e.pieper@intel.com>
MFC after: 1 day
Sponsored by: Intel Corporation
When pci_realloc_bars was first added, the intention was to eventually
enable it by default, but it was left disabled to preserve existing
behavior. The setting is pretty conservative in that it does not
attempt to allocate resources for BARs that the BIOS/firmware leaves
disabled. It only attempts to reallocate resources for a BAR that the
firmware programmed during boot but that conflicts with another
resource during the kernel's device scan.
PR 221350 is an example of a machine that this knob fixes.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D18965
The hardcoded ident is exactly 20 bytes long but sprintf adds terminating zero,
so there is one byte written out of array bounds.As a fix use strncpy it
appends \0 only if space allows and its behavior matches virtio spec:
When VIRTIO_BLK_T_GET_ID is issued, the device identifier, up to 20 bytes, is
written to the buffer. The identifier should be interpreted as an ascii string.
It is terminated with \0, unless it is exactly 20 bytes long.
PR: 202298
Reviewed by: br
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D18852
r241119 that's performed globally by device_attach(9).
- As for the EM-class of devices, em(4) supports multiple queues
and MSI-X respectively only with 82574 devices. However, since
the conversion to iflib(4), em(4) relies on the interrupt type
fallback mechanism, i. e. MSI-X -> MSI -> INTx, of iflib(4) to
figure out the interrupt type to use for the EM-class (as well
as the IGB-class) of MACs. Moreover, despite the datasheet for
82583V not mentioning any support of MSI-X, there actually are
82583V devices out there that report a varying number of MSI-X
messages as supported. The interrupt type fallback of iflib(4)
is causing two failure modes depending on the actual number of
MSI-X messages supported for such instances of 82583V:
1) With only one MSI-X message supported, none is left for the
RX/TX queues as that one message gets assigned to the admin
interrupt. Worse, later on - which will be addressed with a
separate fix - iflib(4) interprets that one messages as MSI
or INTx to be set up, but fails to actually do so as it has
previously called pci_alloc_msix(9). [1, 2]
2) With more message supported, their distribution is okay but
then em_if_msix_intr_assign() doesn't work for 82583V, with
the interface being left in a non-working state, too. [3]
Thus, let em_if_attach_pre() indicate to iflib(4) to try MSI-X
with 82574 only, and at most MSI for the remainder of EM-class
devices.
While at it, remove "try_second_bar" as it's polarity inverted
and not actually needed.
- Remove code from em_if_timer() that effectively is a NOP since
the conversion to iflib(4) ("trigger" is no longer read).
While at it, let the comment for em_if_timer() reflect reality
after said conversion.
- Implement an ifdi_watchdog_reset method which only updates the
em(4) "watchdog_events" counter but doesn't perform any reset,
so that the em(4) "watchdog_timeouts" SYSCTL (iflib(4) doesn't
provide a counterpart) reflects reality and these timeouts add
to IFCOUNTER_OERRORS again after the iflib(4) conversion.
- Remove the "mbuf_defrag_fail" and "tx_dma_fail" SYSCTLS; since
the iflib(4) conversion, associated counters are disconnected,
but iflib(4) provides "mbuf_defrag_failed" and "tx_map_failed"
respectively as equivalents.
- Move the description preceding lem_smartspeed() to the correct
spot before em_reset() and bring back appropriate comments for
{igb,em}_initialize_rss_mapping() and lem_smartspeed() lost in
the iflib(4) conversion.
- Adapt some other function descriptions and INIT_DEBUGOUT() use
to match reality after the iflib(4) conversion.
- Put the debugging message of em_enable_vectors_82574() (missed
in r343578) under bootverbose, too.
PR: 219428 [1], 235246 [2], 235147 [3]
Reviewed by: erj (previous version)
Differential Revision: https://reviews.freebsd.org/D19108
When configured with more tx queues than rx queues,
em_if_msix_intr_assign() was incorrectly routing the tx event
interrupts.
Reviewed by: erj, marius
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D19070
Use the information from IORT parsing to translate the PCI RID to
GIC ITS device ID. And similarly, use the information to find the
PIC XREF identifier to be used for PCI devices.
Reviewed by: andrew
Differential Revision: https://reviews.freebsd.org/D18004
Add new file arm64/acpica/acpi_iort.c to support the "IO Remapping
Table" (IORT). The table is specified in ARM document "ARM DEN 0049D"
titled "IO Remapping Table Platform Design Document". The IORT table
has information on the associations between PCI root complexes, SMMU
blocks and GIC ITS blocks in the system.
The changes are to parse and save the information in the IORT table.
The API to use this information is added to sys/dev/acpica/acpivar.h.
The acpi_iort.c also has code to check the GIC ITS nodes seen in the
IORT table with corresponding entries in MADT table (for validity)
and with entries in SRAT table (for proximity information).
Reviewed by: andrew
Differential Revision: https://reviews.freebsd.org/D18002
There are few places in interrupt handler where the driver
lock is dropped; ensure that device is still running before
processing remaining ring entries.
PR: 192641
MFC after: 5 days
when TEKEN_CONS25 is configured. Fix this by adding a function to
set the flag that enables the fix and always calling this function
for syscons.
Expand the man page for teken_set_cons25(). This function is not
very useful since it can only set but not clear 1 flag. In practice,
it is only used when TEKEN_CONS25 is configured and all that does is
choose the the default emulation for syscons at compile time.
Changelist:
- Replace ND, D and RD macros with nm_prdis, nm_prinf, nm_prerr
and nm_prlim, to avoid possible naming conflicts.
- Add netmap_krings_mode_commit() helper function and use that
to reduce code duplication.
- Refactor pipes control code to export some functions that
can be reused by the veth driver (on Linux) and epair(4).
- Add check to reject API requests with version less than 11.
- Small code refactoring for the null adapter.
MFC after: 1 week
Use recent best practices for Copyright form at the top of
the license:
1. Remove all the All Rights Reserved clauses on our stuff. Where we
piggybacked others, use a separate line to make things clear.
2. Use "Netflix, Inc." everywhere.
3. Use a single line for the copyright for grep friendliness.
4. Use date ranges in all places for our stuff.
Approved by: Netflix Legal (who gave me the form), adrian@ (pmc files)
Add SYNC_KLOOP_MODE option, and add support for direct mode, where application
executes the TXSYNC and RXSYNC in the context of the ioeventfd wake up callback.
MFC after: 5 days
When in MSI mode, the device was only being configured with one
interrupt index, but it needs two - one for the actual interrupt and
one to park the tx queue at.
Also clarified comments relating to interrupt index assignment.
Reported by: Yuri Pankov <yuripv@yuripv.net>
MFC after: 1 day
