Expose the generic Curve25519 library via the crypto API KPP interface.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
In preparation of introducing KPP implementations of Curve25519, import
the set of test cases proposed by the Zinc patch set, but converted to
the KPP format.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This contains two formally verified C implementations of the Curve25519
scalar multiplication function, one for 32-bit systems, and one for
64-bit systems whose compiler supports efficient 128-bit integer types.
Not only are these implementations formally verified, but they are also
the fastest available C implementations. They have been modified to be
friendly to kernel space and to be generally less horrendous looking,
but still an effort has been made to retain their formally verified
characteristic, and so the C might look slightly unidiomatic.
The 64-bit version comes from HACL*: https://github.com/project-everest/hacl-star
The 32-bit version comes from Fiat: https://github.com/mit-plv/fiat-crypto
Information: https://cr.yp.to/ecdh.html
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
[ardb: - move from lib/zinc to lib/crypto
- replace .c #includes with Kconfig based object selection
- drop simd handling and simplify support for per-arch versions ]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
These implementations from Samuel Neves support AVX and AVX-512VL.
Originally this used AVX-512F, but Skylake thermal throttling made
AVX-512VL more attractive and possible to do with negligable difference.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
Co-developed-by: Samuel Neves <sneves@dei.uc.pt>
[ardb: move to arch/x86/crypto, wire into lib/crypto framework]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Wire up our newly added Blake2s implementation via the shash API.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The C implementation was originally based on Samuel Neves' public
domain reference implementation but has since been heavily modified
for the kernel. We're able to do compile-time optimizations by moving
some scaffolding around the final function into the header file.
Information: https://blake2.net/
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
Co-developed-by: Samuel Neves <sneves@dei.uc.pt>
[ardb: - move from lib/zinc to lib/crypto
- remove simd handling
- rewrote selftest for better coverage
- use fixed digest length for blake2s_hmac() and rename to
blake2s256_hmac() ]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
In order to use 128-bit integer arithmetic in C code, the architecture
needs to have declared support for it by setting ARCH_SUPPORTS_INT128,
and it requires a version of the toolchain that supports this at build
time. This is why all existing tests for ARCH_SUPPORTS_INT128 also test
whether __SIZEOF_INT128__ is defined, since this is only the case for
compilers that can support 128-bit integers.
Let's fold this additional test into the Kconfig declaration of
ARCH_SUPPORTS_INT128 so that we can also use the symbol in Makefiles,
e.g., to decide whether a certain object needs to be included in the
first place.
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This is a straight import of the OpenSSL/CRYPTOGAMS Poly1305 implementation for
MIPS authored by Andy Polyakov, a prior 64-bit only version of which has been
contributed by him to the OpenSSL project. The file 'poly1305-mips.pl' is taken
straight from this upstream GitHub repository [0] at commit
d22ade312a7af958ec955620b0d241cf42c37feb, and already contains all the changes
required to build it as part of a Linux kernel module.
[0] https://github.com/dot-asm/cryptogams
Co-developed-by: Andy Polyakov <appro@cryptogams.org>
Signed-off-by: Andy Polyakov <appro@cryptogams.org>
Co-developed-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This is a straight import of the OpenSSL/CRYPTOGAMS Poly1305 implementation
for NEON authored by Andy Polyakov, and contributed by him to the OpenSSL
project. The file 'poly1305-armv4.pl' is taken straight from this upstream
GitHub repository [0] at commit ec55a08dc0244ce570c4fc7cade330c60798952f,
and already contains all the changes required to build it as part of a
Linux kernel module.
[0] https://github.com/dot-asm/cryptogams
Co-developed-by: Andy Polyakov <appro@cryptogams.org>
Signed-off-by: Andy Polyakov <appro@cryptogams.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This is a straight import of the OpenSSL/CRYPTOGAMS Poly1305 implementation
for NEON authored by Andy Polyakov, and contributed by him to the OpenSSL
project. The file 'poly1305-armv8.pl' is taken straight from this upstream
GitHub repository [0] at commit ec55a08dc0244ce570c4fc7cade330c60798952f,
and already contains all the changes required to build it as part of a
Linux kernel module.
[0] https://github.com/dot-asm/cryptogams
Co-developed-by: Andy Polyakov <appro@cryptogams.org>
Signed-off-by: Andy Polyakov <appro@cryptogams.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Implement the arch init/update/final Poly1305 library routines in the
accelerated SIMD driver for x86 so they are accessible to users of
the Poly1305 library interface as well.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Remove the dependency on the generic Poly1305 driver. Instead, depend
on the generic library so that we only reuse code without pulling in
the generic skcipher implementation as well.
While at it, remove the logic that prefers the non-SIMD path for short
inputs - this is no longer necessary after recent FPU handling changes
on x86.
Since this removes the last remaining user of the routines exported
by the generic shash driver, unexport them and make them static.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Expose the existing generic Poly1305 code via a init/update/final
library interface so that callers are not required to go through
the crypto API's shash abstraction to access it. At the same time,
make some preparations so that the library implementation can be
superseded by an accelerated arch-specific version in the future.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
In preparation of exposing a Poly1305 library interface directly from
the accelerated x86 driver, align the state descriptor of the x86 code
with the one used by the generic driver. This is needed to make the
library interface unified between all implementations.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Move the core Poly1305 routines shared between the generic Poly1305
shash driver and the Adiantum and NHPoly1305 drivers into a separate
library so that using just this pieces does not pull in the crypto
API pieces of the generic Poly1305 routine.
In a subsequent patch, we will augment this generic library with
init/update/final routines so that Poyl1305 algorithm can be used
directly without the need for using the crypto API's shash abstraction.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Now that all users of generic ChaCha code have moved to the core library,
there is no longer a need for the generic ChaCha skcpiher driver to
export parts of it implementation for reuse by other drivers. So drop
the exports, and make the symbols static.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This integrates the accelerated MIPS 32r2 implementation of ChaCha
into both the API and library interfaces of the kernel crypto stack.
The significance of this is that, in addition to becoming available
as an accelerated library implementation, it can also be used by
existing crypto API code such as Adiantum (for block encryption on
ultra low performance cores) or IPsec using chacha20poly1305. These
are use cases that have already opted into using the abstract crypto
API. In order to support Adiantum, the core assembler routine has
been adapted to take the round count as a function argument rather
than hardcoding it to 20.
Co-developed-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This imports the accelerated MIPS 32r2 ChaCha20 implementation from the
Zinc patch set.
Co-developed-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Expose the accelerated NEON ChaCha routine directly as a symbol
export so that users of the ChaCha library API can use it directly.
Given that calls into the library API will always go through the
routines in this module if it is enabled, switch to static keys
to select the optimal implementation available (which may be none
at all, in which case we defer to the generic implementation for
all invocations).
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Instead of falling back to the generic ChaCha skcipher driver for
non-SIMD cases, use a fast scalar implementation for ARM authored
by Eric Biggers. This removes the module dependency on chacha-generic
altogether, which also simplifies things when we expose the ChaCha
library interface from this module.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Expose the accelerated NEON ChaCha routine directly as a symbol
export so that users of the ChaCha library API can use it directly.
Given that calls into the library API will always go through the
routines in this module if it is enabled, switch to static keys
to select the optimal implementation available (which may be none
at all, in which case we defer to the generic implementation for
all invocations).
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Depend on the generic ChaCha library routines instead of pulling in the
generic ChaCha skcipher driver, which is more than we need, and makes
managing the dependencies between the generic library, generic driver,
accelerated library and driver more complicated.
While at it, drop the logic to prefer the scalar code on short inputs.
Turning the NEON on and off is cheap these days, and one major use case
for ChaCha20 is ChaCha20-Poly1305, which is guaranteed to hit the scalar
path upon every invocation (when doing the Poly1305 nonce generation)
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Wire the existing x86 SIMD ChaCha code into the new ChaCha library
interface, so that users of the library interface will get the
accelerated version when available.
Given that calls into the library API will always go through the
routines in this module if it is enabled, switch to static keys
to select the optimal implementation available (which may be none
at all, in which case we defer to the generic implementation for
all invocations).
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
In preparation of extending the x86 ChaCha driver to also expose the ChaCha
library interface, drop the dependency on the chacha_generic crypto driver
as a non-SIMD fallback, and depend on the generic ChaCha library directly.
This way, we only pull in the code we actually need, without registering
a set of ChaCha skciphers that we will never use.
Since turning the FPU on and off is cheap these days, simplify the SIMD
routine by dropping the per-page yield, which makes for a cleaner switch
to the library API as well. This also allows use to invoke the skcipher
walk routines in non-atomic mode.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Currently, our generic ChaCha implementation consists of a permute
function in lib/chacha.c that operates on the 64-byte ChaCha state
directly [and which is always included into the core kernel since it
is used by the /dev/random driver], and the crypto API plumbing to
expose it as a skcipher.
In order to support in-kernel users that need the ChaCha streamcipher
but have no need [or tolerance] for going through the abstractions of
the crypto API, let's expose the streamcipher bits via a library API
as well, in a way that permits the implementation to be superseded by
an architecture specific one if provided.
So move the streamcipher code into a separate module in lib/crypto,
and expose the init() and crypt() routines to users of the library.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
In preparation of introducing a set of crypto library interfaces, tidy
up the Makefile and split off the Kconfig symbols into a separate file.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
If aead is built as a module along with cryptomgr, it creates a
dependency loop due to the dependency chain aead => crypto_null =>
cryptomgr => aead.
This is due to the presence of the AEAD geniv code. This code is
not really part of the AEAD API but simply support code for IV
generators such as seqiv. This patch moves the geniv code into
its own module thus breaking the dependency loop.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The crypto API requires cryptomgr to be present for probing to work
so we need a softdep to ensure that cryptomgr is added to the
initramfs.
This was usually not a problem because until very recently it was
not practical to build crypto API as module but with the recent
work to eliminate direct AES users this is now possible.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The linux-amlogic mailing list need to be in copy of all patch for the amlogic crypto.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Fixed 2 copy-paste mistakes in the commit mentioned below that caused
authenc w/ (3)DES to consistently fail on Macchiatobin (but strangely
work fine on x86+FPGA??).
Now fully tested on both platforms.
Fixes: 13a1bb93f7 ("crypto: inside-secure - Fixed warnings...")
Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This reverts commit 03a3bb7ae6 ("hwrng: core - Freeze khwrng
thread during suspend"), ff296293b3 ("random: Support freezable
kthreads in add_hwgenerator_randomness()") and 59b569480d ("random:
Use wait_event_freezable() in add_hwgenerator_randomness()").
These patches introduced regressions and we need more time to
get them ready for mainline.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Cc: Zhou Wang <wangzhou1@hisilicon.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Currently the VF can be enabled only through sysfs interface
after module loaded, but this also needs to be done when the
module loaded in some scenarios.
This patch adds module param vfs_num, adds hisi_zip_sriov_enable()
in probe, and also adjusts the position of probe.
Signed-off-by: Hao Fang <fanghao11@huawei.com>
Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Fixed mask used for CFSIZE and RFSIZE fields of HIA_OPTIONS register,
these were all 1 bit too wide. Which caused the probing of a standard
EIP97 to actually hang due to assume way too large descriptor FIFO's.
Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Pull x86 fixes from Ingo Molnar:
"Two fixes: disable unreliable HPET on Intel Coffe Lake platforms, and
fix a lockdep splat in the resctrl code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/resctrl: Fix potential lockdep warning
x86/quirks: Disable HPET on Intel Coffe Lake platforms
Pull perf fixes from Ingo Molnar:
"Misc fixes: a handful of AUX event handling related fixes, a Sparse
fix and two ABI fixes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Fix missing static inline on perf_cgroup_switch()
perf/core: Consistently fail fork on allocation failures
perf/aux: Disallow aux_output for kernel events
perf/core: Reattach a misplaced comment
perf/aux: Fix the aux_output group inheritance fix
perf/core: Disallow uncore-cgroup events
Pull networking fixes from David Miller:
1) Fix memory leak in xfrm_state code, from Steffen Klassert.
2) Fix races between devlink reload operations and device
setup/cleanup, from Jiri Pirko.
3) Null deref in NFC code, from Stephan Gerhold.
4) Refcount fixes in SMC, from Ursula Braun.
5) Memory leak in slcan open error paths, from Jouni Hogander.
6) Fix ETS bandwidth validation in hns3, from Yonglong Liu.
7) Info leak on short USB request answers in ax88172a driver, from
Oliver Neukum.
8) Release mem region properly in ep93xx_eth, from Chuhong Yuan.
9) PTP config timestamp flags validation, from Richard Cochran.
10) Dangling pointers after SKB data realloc in seg6, from Andrea Mayer.
11) Missing free_netdev() in gemini driver, from Chuhong Yuan.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (56 commits)
ipmr: Fix skb headroom in ipmr_get_route().
net: hns3: cleanup of stray struct hns3_link_mode_mapping
net/smc: fix fastopen for non-blocking connect()
rds: ib: update WR sizes when bringing up connection
net: gemini: add missed free_netdev
net: dsa: tag_8021q: Fix dsa_8021q_restore_pvid for an absent pvid
seg6: fix skb transport_header after decap_and_validate()
seg6: fix srh pointer in get_srh()
net: stmmac: Use the correct style for SPDX License Identifier
octeontx2-af: Use the correct style for SPDX License Identifier
ptp: Extend the test program to check the external time stamp flags.
mlx5: Reject requests to enable time stamping on both edges.
igb: Reject requests that fail to enable time stamping on both edges.
dp83640: Reject requests to enable time stamping on both edges.
mv88e6xxx: Reject requests to enable time stamping on both edges.
ptp: Introduce strict checking of external time stamp options.
renesas: reject unsupported external timestamp flags
mlx5: reject unsupported external timestamp flags
igb: reject unsupported external timestamp flags
dp83640: reject unsupported external timestamp flags
...
- Add proper cleanup on optee_enumerate_devices() failure
- Make sure to register kernel allocations of dynamic shared memory
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Merge tag 'tee-fixes-for-v5.4' of git://git.linaro.org/people/jens.wiklander/linux-tee into arm/fixes
Two OP-TE driver fixes:
- Add proper cleanup on optee_enumerate_devices() failure
- Make sure to register kernel allocations of dynamic shared memory
* tag 'tee-fixes-for-v5.4' of git://git.linaro.org/people/jens.wiklander/linux-tee: (591 commits)
tee: optee: fix device enumeration error handling
tee: optee: Fix dynamic shm pool allocations
Linux 5.4-rc3
tracing: Initialize iter->seq after zeroing in tracing_read_pipe()
tracing/hwlat: Don't ignore outer-loop duration when calculating max_latency
tracing/hwlat: Report total time spent in all NMIs during the sample
recordmcount: Fix nop_mcount() function
tracing: Do not create tracefs files if tracefs lockdown is in effect
tracing: Add locked_down checks to the open calls of files created for tracefs
tracing: Add tracing_check_open_get_tr()
tracing: Have trace events system open call tracing_open_generic_tr()
tracing: Get trace_array reference for available_tracers files
ftrace: Get a reference counter for the trace_array on filter files
tracefs: Revert ccbd54ff54 ("tracefs: Restrict tracefs when the kernel is locked down")
perf/x86/cstate: Add Tiger Lake CPU support
perf/x86/msr: Add Tiger Lake CPU support
perf/x86/intel: Add Tiger Lake CPU support
perf/x86/cstate: Update C-state counters for Ice Lake
perf/x86/msr: Add new CPU model numbers for Ice Lake
perf/x86/cstate: Add Comet Lake CPU support
...
Link: https://lore.kernel.org/r/20191115105353.GA26176@jax
Signed-off-by: Olof Johansson <olof@lixom.net>
This adds recently merged drivers to the aspeed g4 and g5 defconfigs,
and to the multi v5 and v7 shared defconfigs.
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Merge tag 'aspeed-5.5-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed into arm/defconfig
ASPEED device tree updates for 5.5
This adds recently merged drivers to the aspeed g4 and g5 defconfigs,
and to the multi v5 and v7 shared defconfigs.
* tag 'aspeed-5.5-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed:
ARM: config: multi_v5: ASPEED SDHCI, SGPIO
ARM: configs: multi_v7: ASPEED network, gpio, FSI
ARM: config: aspeed-g4: Add MMC, and cleanup
ARM: config: aspeed-g5: Add SGPIO and FSI drivers
ARM: config: aspeed-g5: Enable 8250_DW quirks
Link: https://lore.kernel.org/r/CACPK8Xc3a=6irkTSfwyPrr=nWv_fa9nMxthtC2AyqFJEWvuMwg@mail.gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
Just a single fix to correct the SCMI fast channel doorbell ring logic
when CONFIG_64BIT is not set.
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Merge tag 'scmi-fix-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers
ARM SCMI fix for v5.5
Just a single fix to correct the SCMI fast channel doorbell ring logic
when CONFIG_64BIT is not set.
* tag 'scmi-fix-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT
Link: https://lore.kernel.org/r/20191114164555.GA19398@bogus
Signed-off-by: Olof Johansson <olof@lixom.net>
tcp_mmap is used as a reference program for TCP rx zerocopy,
so it is important to point out some potential issues.
If multiple threads are concurrently using getsockopt(...
TCP_ZEROCOPY_RECEIVE), there is a chance the low-level mm
functions compete on shared ptl lock, if vma are arbitrary placed.
Instead of letting the mm layer place the chunks back to back,
this patch enforces an alignment so that each thread uses
a different ptl lock.
Performance measured on a 100 Gbit NIC, with 8 tcp_mmap clients
launched at the same time :
$ for f in {1..8}; do ./tcp_mmap -H 2002:a05:6608:290:: & done
In the following run, we reproduce the old behavior by requesting no alignment :
$ tcp_mmap -sz -C $((128*1024)) -a 4096
received 32768 MB (100 % mmap'ed) in 9.69532 s, 28.3516 Gbit
cpu usage user:0.08634 sys:3.86258, 120.511 usec per MB, 171839 c-switches
received 32768 MB (100 % mmap'ed) in 25.4719 s, 10.7914 Gbit
cpu usage user:0.055268 sys:21.5633, 659.745 usec per MB, 9065 c-switches
received 32768 MB (100 % mmap'ed) in 28.5419 s, 9.63069 Gbit
cpu usage user:0.057401 sys:23.8761, 730.392 usec per MB, 14987 c-switches
received 32768 MB (100 % mmap'ed) in 28.655 s, 9.59268 Gbit
cpu usage user:0.059689 sys:23.8087, 728.406 usec per MB, 18509 c-switches
received 32768 MB (100 % mmap'ed) in 28.7808 s, 9.55074 Gbit
cpu usage user:0.066042 sys:23.4632, 718.056 usec per MB, 24702 c-switches
received 32768 MB (100 % mmap'ed) in 28.8259 s, 9.5358 Gbit
cpu usage user:0.056547 sys:23.6628, 723.858 usec per MB, 23518 c-switches
received 32768 MB (100 % mmap'ed) in 28.8808 s, 9.51767 Gbit
cpu usage user:0.059357 sys:23.8515, 729.703 usec per MB, 14691 c-switches
received 32768 MB (100 % mmap'ed) in 28.8879 s, 9.51534 Gbit
cpu usage user:0.047115 sys:23.7349, 725.769 usec per MB, 21773 c-switches
New behavior (automatic alignment based on Hugepagesize),
we can see the system overhead being dramatically reduced.
$ tcp_mmap -sz -C $((128*1024))
received 32768 MB (100 % mmap'ed) in 13.5339 s, 20.3103 Gbit
cpu usage user:0.122644 sys:3.4125, 107.884 usec per MB, 168567 c-switches
received 32768 MB (100 % mmap'ed) in 16.0335 s, 17.1439 Gbit
cpu usage user:0.132428 sys:3.55752, 112.608 usec per MB, 188557 c-switches
received 32768 MB (100 % mmap'ed) in 17.5506 s, 15.6621 Gbit
cpu usage user:0.155405 sys:3.24889, 103.891 usec per MB, 226652 c-switches
received 32768 MB (100 % mmap'ed) in 19.1924 s, 14.3222 Gbit
cpu usage user:0.135352 sys:3.35583, 106.542 usec per MB, 207404 c-switches
received 32768 MB (100 % mmap'ed) in 22.3649 s, 12.2906 Gbit
cpu usage user:0.142429 sys:3.53187, 112.131 usec per MB, 250225 c-switches
received 32768 MB (100 % mmap'ed) in 22.5336 s, 12.1986 Gbit
cpu usage user:0.140654 sys:3.61971, 114.757 usec per MB, 253754 c-switches
received 32768 MB (100 % mmap'ed) in 22.5483 s, 12.1906 Gbit
cpu usage user:0.134035 sys:3.55952, 112.718 usec per MB, 252997 c-switches
received 32768 MB (100 % mmap'ed) in 22.6442 s, 12.139 Gbit
cpu usage user:0.126173 sys:3.71251, 117.147 usec per MB, 253728 c-switches
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Cc: Arjun Roy <arjunroy@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Load Realtek-provided firmware for RTL8168fp/RTL8117. Unlike the
firmware for other chip versions which is for the PHY, firmware for
RTL8168fp/RTL8117 is for the MAC.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Using constant MII_EXPANSION is misleading here because register 0x06
has a different meaning on page 0x0005. Here a proprietary PHY
parameter is read by writing the parameter id to register 0x05 on page
0x0005, followed by reading the parameter value from register 0x06.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use phy_support_asym_pause() rather than open-coding it.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
