The context record contains key material precomputed by the driver at
session creation time. Rather than storing various components of the
context record in each session, go a bit further and store the full
context record image so that safexcel_process() can simply copy the
image into each request submitted to the hardware. This simplifies the
data path and eliminates a bunch of unnecessary conditional logic that
was getting executed for each request.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (Netgate)
Rather than preallocating a set of requests and moving them between
queues during state transitions, maintain a shadow of the command
descriptor ring to track the driver context of each request. This is
simpler and requires less synchronization between safexcel_process() and
the ring interrupt handler.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (Netgate)
Rather than returning a hard error in this case, return ERESTART so that
upper layers get a chance to retry the request (or drop it, depending on
the desired policy).
This case is hard to hit due to the somewhat low bound on queued
requests, but that will no longer be true after an upcoming change.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (Netgate)
This gives better performance in some tests than the previous policy of
statically binding each session to a ring.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (Netgate)
AMD 10GbE hardware is designed to have two buffers per receive descriptor to
support split header feature. For this purpose, the driver was designed to use
2 iflib freelists per receive queue. So, that buffers from 2 freelists are used
to refill an entry in the receive descriptor. The current design holds good
with regular data traffic.
But, when netmap comes into play, the current design will not fit in. The
current netmap interfaces and netmap implementation in iflib doesn't seem
to accomodate the design of 2 freelists per receive queue. So, exercising
Netmap capability with inbuilt tools like bridge, pkt-gen doesn't work with
the 2 freelists driver design.
So, the driver design is changed to accomodate the current netmap interfaces
and netmap implementation in iflib by using single freelist per receive queue
approach when Netmap capability is exercised without disturbing the current
2 freelists approach.
The dev.ax.sph_enable tunable can be set to 0 to configure the single
free list mode.
Thanks to Stephan Dewt for his Initial set of code changes for the stated
problem.
Submitted by: rajesh1.kumar_amd.com
Approved by: vmaffione
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D27797
Print warning when we can't parse a console specification (this may
not appear on the console, but will appear in dmesg).
Also, accept key:value and key=value. There's no reason not to
and it makes this more forgiving of mistakes.
Reviewed by: rpokala@
Differential Revision: https://reviews.freebsd.org/D28168
usbhid(4) is disabled by default to avoid conflicts with existing USB HID
drivers. To enable it place following lines to /boot/loader.conf:
hw.usb.usbhid.enable=1
usbhid_load="YES"
Suggested by: jhb
Reviewed by: hselasky
Differential revision: https://reviews.freebsd.org/D28124
OpenBSD never accepted this driver, and instead wrote their
own minimal one (sys/dev/acpi/tpm.c for suspending the device).
Reviewed by: stevek, emaste
Differential Revision: D10321
This driver supports some arm and arm64 boards equipped with
"snps,dw-wdt"-compatible watchdog device.
Tested on RK3399-based board (RockPro64).
Once started watchdog device cannot be stopped.
Interrupt handler has mode to kick watchdog even when software does not do it
properly.
This can be controlled via sysctl: dev.dwwdt.prevent_restart.
Also - driver handles system shutdown and prevents from restart when system
is asked to reboot.
Submitted by: kjopek@gmail.com
Differential Revision: https://reviews.freebsd.org/D26761
Only x86 provides optimized implementations via the blake2 module. The
software "reference" implementation is already included in the crypto(4)
module, we can drop the extra MODULE_DEPEND for other platforms.
Without this change, if_wg.ko could not be loaded due to the missing
dependency.
PR: 252156
Reported by: gbe
Sponsored by: The FreeBSD Foundation
When detaching the if_ure(4) driver, the TX active USB transfer array may
point to freed USB transfers. Given that the number of USB transfers is
very low, simply start all transfers every time there is a packet to
keep safe from use-after-free.
PR: 252608
MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking
-pci_get_class : This function search for a matching pci device based on
the class/subclass and returns a newly created pci_dev.
- pci_{save,restore}_state : This is analogous to ours with the same name
- pci_is_root_bus : Return true if this is the root bus
- pci_get_domain_bus_and_slot : This function search for a matching pci
device based on domain, bus and slot/function concat into a single
unsigned int (devfn) and returns a newly created pci_dev
- pci_bus_{read,write}_config* : Read/Write to the config space.
While here add some helper function to alloc and fill the pci_dev struct.
Reviewed by: hselasky, bz (older version)
Differential Revision: https://reviews.freebsd.org/D27550
pci_find_class_from help finding one or multiple device matching
a class and subclass.
If the from argument is not null we will first loop in the device list
until we find the matching device and only then start to check if the
class/subclass matches.
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D27549
The cgem(4) driver was updated to support 64-bit bus addressing in
facdd1cd20. However, the committed version determines this in an
un-idiomatic way. Change the compile-time conditional to check
BUS_SPACE_MAXADDR, rather than comparing int and pointer sizes.
Reported by: jrtc27
Use an interface compatible with the Linux one so that the user-space
libraries already using the Linux interface can be used without much
modifications.
This allows an open privcmd instance to limit against which domains it
can act upon.
Sponsored by: Citrix Systems R&D
Use an interface compatible with the Linux one so that the user-space
libraries already using the Linux interface can be used without much
modifications.
This allows user-space to make use of the dm_op family of hypercalls,
which are used by device models.
Sponsored by: Citrix Systems R&D
The interface is mostly the same as the Linux ioctl, so that we don't
need to modify the user-space libraries that make use of it.
The ioctl is just a proxy for the XENMEM_acquire_resource hypercall.
Sponsored by: Citrix Systems R&D
Restore the hwofs functionality temporarily disabled by
7ba6ecf216 to prevent issues with iflib.
This patch brings the necessary changes to iflib to
enable howfs to allow interface restarts without
disrupting netmap applications actively using its
rings.
After this change, it becomes possible for multiple
non-cooperating netmap applications to use non-overlapping
subsets of the available netmap rings without clashing
with each other.
PR: 252453
MFC after: 1 week
Add 64-bit address support to Cadence CGEM Ethernet driver for use in
other SoCs such as the Zynq UltraScale+ and SiFive HighFive Unleashed.
Reviewed by: philip, 0mp (manpages)
Differential Revision: https://reviews.freebsd.org/D24304
Similarly to what done for iflib in 1d238b07d5,
this patch prevents access to the krings during the interface
reset triggered by netmap_register().
MFC after: 1 week
The netmap_reset() function is meant to be called by the driver
when they initialize (or re-initialize) a hardware ring.
However, since the introduction of support for opening (in
netmap mode) a subset of the available rings, netmap_reset()
may be called multiple times on actively used rings, causing
both kring and netmap ring to transition to an inconsistent
state.
This changes improves the situation by resetting all the
indices fields of the kring to 0, as expected after the
reinitialization of a hardware ring.
PR: 252518
MFC after: 1 week
When different processes open separate subsets of the
available rings of a same netmap interface, a device
reset may be performed while one of the processes
is actively using some rings (e.g., caused by another
process executing a nmport_open()).
With this patch, such situation will cause the
active process to get a POLLERR, so that it can
have a chance to detect the situation.
We also guarantee that no process is running a txsync
or rxsync (ioctl or poll) while an iflib device reset
is in progress.
PR: 252453
MFC after: 1 week
The NVMe byte-swap routines for big-endian platforms used memcpy() to
move the unaligned 64-bit value into a temp register to byte swap it.
Instead of introducing a dependency, manually byte-swap the values in
place.
Point hat: me
The device mapping table contains sc->max_devices entries, so only
indices in [0, sc->max_devices) are valid.
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D27964
