Commit Graph

7639 Commits

Author SHA1 Message Date
Zbigniew Bodek
9b8d05b8ac Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.

The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.

The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.

Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.

ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.

The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.

The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.

Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.

Submitted by:	Michal Krawczyk <mk@semihalf.com>
		Jakub Palider <jpa@semihalf.com>
		Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
John Baldwin
5033c43b7a Add a driver for the Chelsio T6 crypto accelerator engine.
The ccr(4) driver supports use of the crypto accelerator engine on
Chelsio T6 NICs in "lookaside" mode via the opencrypto framework.

Currently, the driver supports AES-CBC, AES-CTR, AES-GCM, and AES-XTS
cipher algorithms as well as the SHA1-HMAC, SHA2-256-HMAC, SHA2-384-HMAC,
and SHA2-512-HMAC authentication algorithms.  The driver also supports
chaining one of AES-CBC, AES-CTR, or AES-XTS with an authentication
algorithm for encrypt-then-authenticate operations.

Note that this driver is still under active development and testing and
may not yet be ready for production use.  It does pass the tests in
tests/sys/opencrypto with the exception that the AES-GCM implementation
in the driver does not yet support requests with a zero byte payload.

To use this driver currently, the "uwire" configuration must be used
along with explicitly enabling support for lookaside crypto capabilities
in the cxgbe(4) driver.  These can be done by setting the following
tunables before loading the cxgbe(4) driver:

    hw.cxgbe.config_file=uwire
    hw.cxgbe.cryptocaps_allowed=-1

MFC after:	1 month
Relnotes:	yes
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D10763
2017-05-17 22:13:07 +00:00
Adrian Chadd
f48f696087 [iwm] Factor out firmware station handling into if_iwm_sta.c.
* This adds iwm_mvm_rm_sta(), which will be used to tear down firmware
  state for better/cleaner iwm_newstate() handling.

* Makes iwm_enable_txq() and iwm_mvm_flush_tx_path() non-static, add
  the declarations to if_iwm_util.h for now.

Obtained from:	dragonflybsd.git 85d1c6190c4c3564b1a347f253e823aa95c202b2
2017-05-12 06:03:23 +00:00
Sepherosa Ziehau
554e6778b6 hyperv/vmbus: Reorganize vmbus device tree
For GEN1 Hyper-V, vmbus is attached to pcib0, which contains the
resources for PCI passthrough and SR-IOV.  There is no
acpi_syscontainer0 on GEN1 Hyper-V.

For GEN2 Hyper-V, vmbus is attached to acpi_syscontainer0, which
contains the resources for PCI passthrough and SR-IOV.  There is
no pcib0 on GEN2 Hyper-V.

The ACPI VMBUS device now only holds its _CRS, which is empty as
of this commit; its existence is mainly for upward compatibility.

Device tree structure is suggested by jhb@.

Tested-by:	dexuan@
Collabrated-wth:	dexuan@
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D10565
2017-05-10 05:28:14 +00:00
Bryan Drewery
6d75a7a852 Support skipping 'make obj' tree-walk.
This is part of a larger effort for WITH_AUTO_OBJ and a WORLDFAST
option.

Sponsored by:	Dell EMC Isilon
2017-05-09 20:21:38 +00:00
Enji Cooper
2740c3ea4a Add MK_TESTS to kern.opts.mk to support r31800
MFC after:	3 weeks
MFC with:	r318008
Pointyhat to:	ngie
Sponsored by:	Dell EMC Isilon
2017-05-09 05:03:35 +00:00
Adrian Chadd
01c914420d [mips] [rt2880] Add oldest Ralink MIPS SOC RT2880 support code.
* Target module have ic plus etherswitch ip175c.
* Also add etherswitch support code on rt driver.

Reviewed by:	mizhka
Differential Revision:	https://reviews.freebsd.org/D10336
2017-05-06 06:20:34 +00:00
Navdeep Parhar
2204b42716 cxgbe(4): Support routines for Tx traffic scheduling.
- Create a new file, t4_sched.c, and move all of the code related to
  traffic management from t4_main.c and t4_sge.c to this file.
- Track both Channel Rate Limiter (ch_rl) and Class Rate Limiter (cl_rl)
  parameters in the PF driver.
- Initialize all the cl_rl limiters with somewhat arbitrary default
  rates and provide routines to update them on the fly.
- Provide routines to reserve and release traffic classes.

MFC after:	1 month
Sponsored by:	Chelsio Communications
2017-05-02 20:38:10 +00:00
Michael Tuexen
d7f27102b5 armv8 has support for optional CRC32C instructions. This patch checks if they are
available and if that is true make use of them.
Thank you very much to Andrew Turner for providing help and review the patch!
Reviewed by:		andrew
MFC after:		1 week
Differential Revision:	https://reviews.freebsd.org/D10499
2017-04-27 17:53:05 +00:00
John Baldwin
32455e8912 Revert r317446 and bring back cy(4).
Requested by:	bde
2017-04-27 16:14:32 +00:00
John Baldwin
a63222db3a Remove the cy(4) driver for Cyclades serial adapters.
This driver has been disconnected from the build since the new tty
layer was introduced in 8.0 and was never updated for new tty.
2017-04-26 18:23:09 +00:00
Brooks Davis
a7dc31283a Remove the NATM framework including the en(4), fatm(4), hatm(4), and
patm(4) devices.

Maintaining an address family and framework has real costs when we make
infrastructure improvements.  In the case of NATM we support no devices
manufactured in the last 20 years and some will not even work in modern
motherboards (some newer devices that patm(4) could be updated to
support apparently exist, but we do not currently have support).

With this change, support remains for some netgraph modules that don't
require NATM support code. It is unclear if all these should remain,
though ng_atmllc certainly stands alone.

Note well: FreeBSD 11 supports NATM and will continue to do so until at
least September 30, 2021.  Improvements to the code in FreeBSD 11 are
certainly welcome.

Reviewed by:	philip
Approved by:	harti
2017-04-24 21:21:49 +00:00
Andrew Turner
574a7c6c47 Call the PSCI reset from cpu_reset on arm64. When rebooting from DDB the
kernel calls this directly so the event handler is not called, meaning
the computer fails to reboot.

Tested by:	cognet
MFC after:	1 week
Sponsored by:	DARPA, AFRL
2017-04-24 11:06:10 +00:00
Mark Murray
150890b0c6 Replace the RC4 algorithm for generating in-kernel secure random
numbers with Chacha20. Keep the API, though, as that is what the
other *BSD's have done.

Use the boot-time entropy stash (if present) to bootstrap the
in-kernel entropy source.

Reviewed by: delphij,rwatson
Approved by: so(delphij)
MFC after: 2 months
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D10048
2017-04-16 09:11:02 +00:00
Dag-Erling Smørgrav
d196586a6c 3BSD-licensed implementation of the chacha20 stream cipher, intended for
use by the upcoming arc4random replacement.
2017-04-15 20:51:53 +00:00
Ruslan Bukin
f13cb8ed2b Disable fformat-extensions for RISC-V target as GCC 6.1 external compiler
has no support for that.

Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D10348
2017-04-12 10:40:30 +00:00
Sevan Janiyan
fc5bae39c0 Revert previous change to sys/conf/options & associated notes so builds can
resume while I investigate what I had missed.
2017-04-07 21:06:50 +00:00
Sevan Janiyan
ea566940e1 Remove the last vestiges of FDC_DEBUG & FD_DEBUG
FDC_DEBUG is not referenced in any c or header files but traces of it
still remain in other files.

PR:		105608
Reported by:	Eugene Grosbein <ports AT grosbein DOT net>
Reviewed by:	imp
Approved by:	bcr (mentor)
MFC after:	7 days
Differential Revision:	https://reviews.freebsd.org/D10303
2017-04-07 16:14:25 +00:00
Hans Petter Selasky
c9dd0b48c9 Cleanup the bitmap_xxx() functions in the LinuxKPI:
- Move all bitmap related functions from bitops.h to bitmap.h, similar
  to what Linux does.

- Apply some minor code cleanup and simplifications to optimize the
  generated code when using static inline functions.

- Implement the following list of bitmap functions which are needed by
  drm-next and ibcore:
  - bitmap_find_next_zero_area_off()
  - bitmap_find_next_zero_area()
  - bitmap_or()
  - bitmap_and()
  - bitmap_xor()

- Add missing include directives to the qlnxe driver
  (davidcs@ has been notified)

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-04-06 13:30:31 +00:00
John Baldwin
fd46810af6 Fix the linker emulation setting for riscv.
Reported by:	lwhsu
MFC after:	1 week
Sponsored by:	DARPA / AFRL
2017-04-05 18:59:58 +00:00
Bryan Drewery
f8a35ad1bd Support assym.s in DPSRCS to depend on it but not link it in.
Reported by:	andrew
MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
2017-04-05 17:56:17 +00:00
Sepherosa Ziehau
3f1b91c58d hyperv/kbd: Add support for synthetic keyboard.
Synthetic keyboard is the only supported keyboard on GEN2 Hyper-V.

Submitted by:	Hongjiang Zhang <honzhan microsoft com>
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D10196
2017-04-05 05:01:23 +00:00
John Baldwin
dc653882d4 Always pass the linker emulation via -m when linking modules and kernels.
Previously the linker emulation was only passed when building binary
objects for firmware modules.  This change always passes the desired
output format for kernel modules and kernels rather than requiring the
toolchain's default output format to match the desired output format.
This in turn permits use of external toolchains whose default output
format does not match the desired output format.

Reviewed by:	imp, emaste
Sponsored by:	DARPA / AFRL
Differential Revision:	https://reviews.freebsd.org/D10085
2017-04-05 03:05:04 +00:00
John Baldwin
5da3b3772f Sync SYSTEM_LD in Makefile.arm with kern.pre.mk.
- Add --no-warn-mismatch.
- Use same whitespace to make future updates simpler.

Reviewed by:	imp (part of a larger change)
Sponsored by:	DARPA / AFRL
Differential Revision:	https://reviews.freebsd.org/D10085
2017-04-05 03:00:52 +00:00
John Baldwin
dd3c43299e Use correct linker emulation name for armeb.
MFC after:	1 week
Sponsored by:	DARPA / AFRL
Differential Revision:	https://reviews.freebsd.org/D10085
2017-04-05 02:52:49 +00:00
David C Somayajulu
11e25f0da3 Add 25/40/100Gigabit Ethernet Driver version v1.3.0 for Cavium Inc's.
Qlogic 45000 Series Adapters

MFC after:2 weeks
2017-04-04 06:16:59 +00:00
Robert Watson
709557d903 Break audit_bsm_klib.c into two files: one (audit_bsm_klib.c)
retaining various utility functions used during BSM generation,
and a second (audit_bsm_db.c) that contains the various in-kernel
databases supporting various audit activities (the class and
event-name tables).

(No functional change is intended.)

Obtained from:	TrustedBSD Project
MFC after:	3 weeks
Sponsored by:	DARPA, AFRL
2017-04-03 10:15:58 +00:00
Andrey V. Elsukov
aac74aeac7 Add ipfw_pmod kernel module.
The module is designed for modification of a packets of any protocols.
For now it implements only TCP MSS modification. It adds the external
action handler for "tcp-setmss" action.

A rule with tcp-setmss action does additional check for protocol and
TCP flags. If SYN flag is present, it parses TCP options and modifies
MSS option if its value is greater than configured value in the rule.
Then it adjustes TCP checksum if needed. After handling the search
continues with the next rule.

Obtained from:	Yandex LLC
MFC after:	2 weeks
Relnotes:	yes
Sponsored by:	Yandex LLC
No objection from: #network
Differential Revision:	https://reviews.freebsd.org/D10150
2017-04-03 03:07:48 +00:00
Justin Hibbits
d139c624a9 Add Freescale eSPI driver found on QorIQ SoCs 2017-04-02 01:21:35 +00:00
Pedro F. Giffuni
ac506a8f5a ext2fs: Initial support for Extended Attributes.
Currently read-only.

Submitted by:	Fedor Uporov
MFC after:	3 weeks
Differential Revision:	https://reviews.freebsd.org/D10151
2017-04-01 01:00:36 +00:00
Nick Hibma
b14e3bd289 Add nctgpio conf lines so it can be compiled into the kernel.
MFC after:	2 days
2017-03-30 15:05:10 +00:00
Enji Cooper
653e7d6396 Split iscsi(4) ctl frontend off of ctl(4) as cfiscsi(4)
The goal of this work is to remove the explicit dependency for ctl(4)
on iscsi(4), so end-users without iscsi(4) support in the kernel can
use ctl(4) for its other functions.

This allows those without iscsi(4) support built into the kernel to use
ctl(4) as a test mechanism. As a sidenote, this was possible around the
10.0-RELEASE period, but made impossible for end-users without iscsi(4)
between 10.0-RELEASE and 11.0-RELEASE.

Automatically load cfiscsi(4) from ctladm(8) and ctld(8) for backwards
compatibility with previously releases. The automatic loading feature is
compiled into the beforementioned tools if MK_ISCSI == yes when building
world.

Add a manpage for cfiscsi(4) and refer to it in ctl(4).

Differential Revision:	D10099
MFC after:	2 months
Relnotes:	yes
Reviewed by:	mav, trasz
Sponsored by:	Dell EMC Isilon
2017-03-30 04:56:27 +00:00
Robert Watson
1811d6bf7f Add an experimental DTrace audit provider, which allows users of DTrace to
instrument security event auditing rather than relying on conventional BSM
trail files or audit pipes:

- Add a set of per-event 'commit' probes, which provide access to
  particular auditable events at the time of commit in system-call return.
  These probes gain access to audit data via the in-kernel audit_record
  data structure, providing convenient access to system-call arguments and
  return values in a single probe.

- Add a set of per-event 'bsm' probes, which provide access to particular
  auditable events at the time of BSM record generation in the audit
  worker thread. These probes have access to the in-kernel audit_record
  data structure and BSM representation as would be written to a trail
  file or audit pipe -- i.e., asynchronously in the audit worker thread.

DTrace probe arguments consist of the name of the audit event (to support
future mechanisms of instrumenting multiple events via a single probe --
e.g., using classes), a pointer to the in-kernel audit record, and an
optional pointer to the BSM data and its length. For human convenience,
upper-case audit event names (AUE_...) are converted to lower case in
DTrace.

DTrace scripts can now cause additional audit-based data to be collected
on system calls, and inspect internal and BSM representations of the data.
They do not affect data captured in the audit trail or audit pipes
configured in the system. auditd(8) must be configured and running in
order to provide a database of event information, as well as other audit
configuration parameters (e.g., to capture command-line arguments or
environmental variables) for the provider to operate.

Reviewed by:	gnn, jonathan, markj
Sponsored by:	DARPA, AFRL
MFC after:	3 weeks
Differential Revision:	https://reviews.freebsd.org/D10149
2017-03-29 19:58:00 +00:00
Michael Zhilin
cb99e844b4 [etherswitch] simplify kernconf for recently added etherswitch drivers
This simple patch adds e6060sw, adm6996fc and ksz8995ma into conf/files.

Submitted by:	Hiroki Mori <yamori813@yahoo.co.jp>
Reviewed by:	adrian, mizhka
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D9255
2017-03-27 19:26:09 +00:00
Bruce Evans
864c28cf81 Use inline asm instead of unportable intrinsics for the SSE4 crc32
optimization.

This fixes building with gcc-4.2.1 (it doesn't support SSE4).
gas-2.17.50 [FreeBSD] supports SSE4 instructions, so this doesn't
need using .byte directives.

This fixes depending on host user headers in the kernel.

Fix user includes (don't depend on namespace pollution in <nmmintrin.h>
that is not included now).

The instrinsics had no advantages except to sometimes avoid compiler
pessimixations.  clang understands them a bit better than inline asm,
and generates better looking code which also runs better for cem, but
for me it just at the same speed or slower by doing excessive
unrollowing in all the wrong places.  gcc-4.2.1 also doesn't understand
what it is doing with unrolling, but with -O3 somehow it does more
unrolling that helps.

Reduce 1 of the the compiler pessimizations (copying a variable which
already satisfies an "rm" constraint in a good way by being in memory
and not used again, to different memory and accessing it there.  Force
copying it to a register instead).

Try to optimize the inner loops significantly, so as to run at full
speed on smaller inputs.  The algorithm is already very MD, and was
tuned for the throughput of 3 crc32 instructions per cycle found on
at least Sandybridge through Haswell.  Now it is even more tuned for
this, so depends more on the compiler not rearranging or unrolling
things too much.  The main inner loop for should have no difficulty
runing at full speed on these CPUs unless the compiler unrolls it too
much.  However, the main inner loop wasn't even used for buffers smaller
than 24K.  Now it is used for buffers larger than 384 bytes.  Now it
is not so long, and the main outer loop is used more.  The new
optimization is to try to arrange that the outer loop runs in parallel
with the next inner loop except for the final iteration; then reduce
the loop sizes significantly to take advantage of this.

Approved by:	cem
Not tested in production by:	bde
2017-03-26 10:31:48 +00:00
Andrew Turner
e336138c40 Add the early hypervisor code needed on 32-bit ARMv7. This will be used
when we bring in bhyve support.

Submitted by:	Mihai Carabas <mihai.carabas AT gmail.com>
Differential Revision:	https://reviews.freebsd.org/D10045
2017-03-22 14:30:02 +00:00
Ed Maste
bd4e40546c use INT3 instead of NOP for x86 binary padding
We should never end up executing the inter-function padding, so we
are better off faulting than silently carrying on to whatever function
happens to be next.

Note that LLD will soon do this by default (although it currently pads
with zeros).

Reviewed by:	dim, kib
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D10047
2017-03-19 00:22:13 +00:00
Bryan Drewery
66f30c92ee kmod: Fix building assym.o not building missing dependencies.
For instance, in the dtrace/dtrace module, building dtrace_asm.o wants
to build genassym.o first, but it doesn't build the missing ilinks
and if_*.h headers which are part of the OBJS_DEPEND_GUESS list
of dependencies to build if a .depend file is missing.

MFC after:	1 week
Sponsored by:	Dell EMC Isilon
2017-03-17 18:08:33 +00:00
Bryan Drewery
3063d216c1 kmod: Fix depending on ILINKS for tracked DEPENDOBJS.
The objects that may be in the dependency graph may not match
${OBJS}.  Ensure the ilink link is added as a dependency for
all of them when a .depend file is missing for that objfile.

MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
2017-03-17 18:08:00 +00:00
Andrew Turner
1eff4c0c37 Remove code for Marvell SoCs that lack a kernel config.
It seems to be old code from the armv6 project branch that never had a
kernel config.

Reviewed by:	mmel
Sponsored by:	ABT Systems Lrd
Differential Revision:	https://reviews.freebsd.org/D7166
2017-03-17 12:59:16 +00:00
Marius Strobl
72dec0792a - Add support for eMMC "partitions". Besides the user data area, i. e.
the default partition, eMMC v4.41 and later devices can additionally
  provide up to:
  1 enhanced user data area partition
  2 boot partitions
  1 RPMB (Replay Protected Memory Block) partition
  4 general purpose partitions (optionally with a enhanced or extended
    attribute)

  Of these "partitions", only the enhanced user data area one actually
  slices the user data area partition and, thus, gets handled with the
  help of geom_flashmap(4). The other types of partitions have address
  space independent from the default partition and need to be switched
  to via CMD6 (SWITCH), i. e. constitute a set of additional "disks".

  The second kind of these "partitions" doesn't fit that well into the
  design of mmc(4) and mmcsd(4). I've decided to let mmcsd(4) hook all
  of these "partitions" up as disk(9)'s (except for the RPMB partition
  as it didn't seem to make much sense to be able to put a file-system
  there and may require authentication; therefore, RPMB partitions are
  solely accessible via the newly added IOCTL interface currently; see
  also below). This approach for one resulted in cleaner code. Second,
  it retains the notion of mmcsd(4) children corresponding to a single
  physical device each. With the addition of some layering violations,
  it also would have been possible for mmc(4) to add separate mmcsd(4)
  instances with one disk each for all of these "partitions", however.
  Still, both mmc(4) and mmcsd(4) share some common code now e. g. for
  issuing CMD6, which has been factored out into mmc_subr.c.

  Besides simply subdividing eMMC devices, some Intel NUCs having UEFI
  code in the boot partitions etc., another use case for the partition
  support is the activation of pseudo-SLC mode, which manufacturers of
  eMMC chips typically associate with the enhanced user data area and/
  or the enhanced attribute of general purpose partitions.

  CAVEAT EMPTOR: Partitioning eMMC devices is a one-time operation.

- Now that properly issuing CMD6 is crucial (so data isn't written to
  the wrong partition for example), make a step into the direction of
  correctly handling the timeout for these commands in the MMC layer.
  Also, do a SEND_STATUS when CMD6 is invoked with an R1B response as
  recommended by relevant specifications. However, quite some work is
  left to be done in this regard; all other R1B-type commands done by
  the MMC layer also should be followed by a SEND_STATUS (CMD13), the
  erase timeout calculations/handling as documented in specifications
  are entirely ignored so far, the MMC layer doesn't provide timeouts
  applicable up to the bridge drivers and at least sdhci(4) currently
  is hardcoding 1 s as timeout for all command types unconditionally.
  Let alone already available return codes often not being checked in
  the MMC layer ...

- Add an IOCTL interface to mmcsd(4); this is sufficiently compatible
  with Linux so that the GNU mmc-utils can be ported to and used with
  FreeBSD (note that due to the remaining deficiencies outlined above
  SANITIZE operations issued by/with `mmc` currently most likely will
  fail). These latter will be added to ports as sysutils/mmc-utils in
  a bit. Among others, the `mmc` tool of the GNU mmc-utils allows for
  partitioning eMMC devices (tested working).

- For devices following the eMMC specification v4.41 or later, year 0
  is 2013 rather than 1997; so correct this for assembling the device
  ID string properly.

- Let mmcsd.ko depend on mmc.ko. Additionally, bump MMC_VERSION as at
  least for some of the above a matching pair is required.

- In the ACPI front-end of sdhci(4) describe the Intel eMMC and SDXC
  controllers as such in order to match the PCI one.
  Additionally, in the entry for the 80860F14 SDXC controller remove
  the eMMC-only SDHCI_QUIRK_INTEL_POWER_UP_RESET.

OKed by:	imp
Submitted by:	ian (mmc_switch_status() implementation)
2017-03-16 22:23:04 +00:00
Emmanuel Vadot
aa6b345634 Remove i915drm and radeondrm from NOTES and conf.
This unbreak LINT kernel.

Reported by:	lwhsu
2017-03-12 00:52:16 +00:00
Michal Meloun
ffeeb2ab3f Split overbloated machep.c to multiple files and do basic cleanup
of these fragments.
2017-03-11 07:07:41 +00:00
Hans Petter Selasky
9760ac0a3e Implement support for mutexes with deadlock avoidance in the LinuxKPI.
When locking a mutex and deadlock is detected the first mutex lock
call that sees the deadlock will return -EDEADLK .

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-03-09 18:33:40 +00:00
Hans Petter Selasky
14c5024db8 Cleanup the LinuxKPI slab implementation.
Put large functions into linux_slab.c instead of declaring them static
inline.

Add support for more memory allocation wrappers like kmalloc_array()
and __vmalloc().

Make sure either the M_WAITOK or the M_NOWAIT flag is set and mask
away unused memory allocation flags before calling FreeBSD's malloc()
routine.

Move kmalloc_node() definition to slab.h where it belongs.

Implement support for the SLAB_DESTROY_BY_RCU feature when creating a
kmem_cache which basically means kmem_cache memory is freed using
call_rcu().

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-03-08 11:09:27 +00:00
Hans Petter Selasky
ca2ad6bd77 LinuxKPI workqueue cleanup.
This change makes the workqueue implementation behave more like in
Linux, both functionality wise and structure wise.

All workqueue code has been moved to linux_work.c

Add an atomic based statemachine to the work_struct to ensure proper
operation. Prior to this change struct_work was directly mapped to a
FreeBSD task. When a taskqueue has multiple threads the same task may
end up being executed on more than one worker thread simultaneously.
This might cause problems with code coming from Linux, which expects
serial behaviour, similar to Linux tasklets.

Move all global workqueue function names into the linux_xxx domain to
avoid symbol name clashes in the future.

Implement a few more workqueue related functions and macros.

Create two multithreaded taskqueues for the LinuxKPI during module
load, one for time-consuming callbacks and one for non-time consuming
callbacks.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-03-07 12:09:14 +00:00
Eric Badger
99b14d9f1b remove procfs ctl interface
This interface has no in-tree consumers and has been more or less
non-functional for several releases.

Remove manpage note that the procfs special file 'mem' is grouped to
kmem. This hasn't been true since r81107.

Remove procfs' README file. It is an out of date duplication of the manpage
(quoth the README: "since the bsd kernel is single-processor...").

Reviewed by:	vangyzen, bcr (manpage)
Approved by:	des (procfs maintainer), vangyzen (mentor)
Differential Revision:	https://reviews.freebsd.org/D9802
2017-03-05 03:05:24 +00:00
Dimitry Andric
348238dbd4 Merge ^/head r314420 through r314481. 2017-03-01 08:22:51 +00:00
Warner Losh
fbbd9655e5 Renumber copyright clause 4
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00
Dimitry Andric
be64968040 Merge ^/head r314270 through r314419. 2017-02-28 21:30:26 +00:00