Instead of mapping a dummy page upon a page fault, map the page
pointed to by the physical address given by IDX_TO_OFF(vmap->vm_pfn).
To simplify the implementation use OBJT_DEVICE to implement our own
linux_cdev_pager_fault() instead of using the existing
linux_cdev_pager_populate().
Some minor code factoring while at it.
Reviewed by: markj @
MFC after: 1 week
Sponsored by: Mellanox Technologies
Set "td_pinned" to zero after "sched_unbind()" to prevent "td_pinned"
from temporarily becoming negative during "sched_bind()". This can
happen if "sched_bind()" uses "sched_pin()" and "sched_unpin()".
MFC after: 1 week
Sponsored by: Mellanox Technologies
programmed for infinite IN token retry after NAK, the SAF1761
hardware, however, does not retry the IN-token. This problem is
described in the SAF1761 errata, section 18.1.1.
While at it:
- Add some minor chip specific initialization for RTEMS.
- Add debug print for status registers in the interrupt filter.
Submitted by: Christian Mauderer <christian.mauderer@embedded-brains.de>
MFC after: 1 week
amdvi_cmp_wait: gcc complained about a malformed string behind an ifdef.
struct amdvi_dte: widen the type of the first reserved bitfield so that
the packed representation would not cross an alignment boundary for that
type. Apparently that causes in-tree gcc (4.2) to insert padding
(despite packed, resulting in a wrong structure definition), and causes
more modern gcc to emit a warning.
ivrs_hdr_iterate_tbl: delete a misleading check about header length
being less than 0 (the type is unsigned) and replace it with a check
that the length doesn't exceed the table size.
Reviewed by: anish, grehan
Approved by: markj (mentor)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D11485
The benefit of BIT_FLS() is that ffsl() can be implemented with a
count leading zeros instruction which is more widespread available.
Submitted by: Sebastian Huber <sebastian.huber@embedded-brains.de>
MFC after: 1 week
similar to "if (ticks > localvar+interval) {localvar=ticks; ...}" where
localvar is initialized to zero. Ticks is initialized to a negative value
since r278230, and that leads to these if statements never being true.
Uiomove can only block when the segflag is UIO_USERSPACE,
otherwise we end up just doing a bcopy (or nothing) and
moving cursors. So only emit witness warnings and
set deadlock thread flags in the UIO_USERSPACE case.
Reviewed by: kib
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D11489
Remove any chipset specific usage of Rx descriptor structure / bits
from common code to prevent misuse of fields that may differ
between various chipsets.
Checked with: RTL8821AU in STA mode.
gcc produces a "variably modified X at file scope" warning for
structures that use these size definitions.
PR: 211540
Reviewed by: markj
Approved by: markj (mentor)
Sponsored by: Dell EMC Isilon
Differential revision: https://reviews.freebsd.org/D11416
This patch adds support for AF_LOCAL socket upcalls to an nfsuserd daemon
that supports them. A future patch to the nfsuserd daemon will use AF_LOCAL
sockets to avoid a problem when using upcalls to 127.0.0.1 if jails are
in use.
Suggested by: dfr
PR: 205193
This addresses a deadlock during boot when EARLY_AP_STARTUP is configured:
a taskqueue thread may call pause() with an ACPI mutex held, and thread0
may block on this mutex before configuring the eventtimer. In this case
the taskqueue thread will sleep forever waiting for its callout to fire.
PR: 220277
Submitted by: jhb
MFC after: 3 days
Includes:
- Support for X550EM devices.
- Support for Bypass adapters.
- Flow Director code moved to separate files
- SR-IOV code moved to separate files
- Netmap code moved to separate files
Differential Revision: https://reviews.freebsd.org/D11232
Submitted by: Jeb Cramer <cramerj@intel.com>
Reviewed by: erj@
Tested by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Sponsored by: Intel Corporation
sbavail() returns u_int and sendwin is a uint32_t. Therefore, min() (which
operates on two u_int values) is able to correctly calculate the minimum
of these two arguments.
Reported by: rrs
MFC after: 1 week
Sponsored by: Netflix
This driver is standard rather than optional because it can always provide
time after a reboot, but it will only provide time after a power cycle if
battery power is supplied to the chip's SNVS power domain.
socket structure into a listening socket. This resulted in an invalid
instruction fault for all 32-bit platforms.
When INVARIANTS is set the union where the two uninitialized fields
reside gets properly zeroed. This patch ensures the two uninitialized
fields are zeroed when INVARIANTS is undefined.
For 64-bit platforms this issue was not visible because so->sol_upcall
which is uninitialized overlaps with so->so_rcv.sb_state which is
already zero during soalloc();
For 32-bit platforms this issue was visible and resulted in an invalid
instruction fault, because so->sol_upcall overlaps with
so->so_rcv.sb_sel which is always initialized to a valid data pointer
during soalloc().
Verifying the offset locations mentioned above are identical is left
as an exercise to the reader.
PR: 220452
PR: 220358
Reviewed by: ae (network), gallatin
Differential Revision: https://reviews.freebsd.org/D11475
Sponsored by: Mellanox Technologies
Collapse should be more effective than defragmentation.
Added missing declaration of ena_check_and_collapse_mbuf().
Submitted by: Michal Krawczyk <mk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
TSO settings were not reflecting real HW capabilities.
DMA tags were created with wrong window - high address was the same as
low, so excluding window was not working.
Capabilities of TX dma transaction were not set properly - TSO max size
had been increased and size of one segment had been adjusted.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
RX lock is no longer required. There can only be one RX cleanup task
running at a time, RX cleanup cannot be executed if interface is not
yet initialized and ena_down() will not free any RX resources if any io
interrupt is being handled - RX cleanup task is only called from an
interrupt handler.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
If drbr_advance() is not called before doing cleanup and packet is
already enqueued for sending (tx_info is holding pointer to mbuf), then
mbuf is cleaned both in drbr_flush() and in cleanup routine, when all
mbufs hold by tx_buffer_info are being released.
This causes panic, because mbuf is released twice.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
If driver left MSI-x handlling routine because interface was put down,
it is not unmasking IRQs, so any requesting interrupt will be awaiting
for unmasking.
On ena_up() routine all interrupts are being unmasked and any awaiting
interrupt will be handled right away.
If handler was executed before driver state was set as running, handling
routine is being ended immediately, leaving IO irqs for given queue
masked.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
