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Jason A. Donenfeld 2ba33fdf1d siphash: use one source of truth for siphash permutations 
commit e73aaae2fa upstream.

The SipHash family of permutations is currently used in three places:

- siphash.c itself, used in the ordinary way it was intended.
- random32.c, in a construction from an anonymous contributor.
- random.c, as part of its fast_mix function.

Each one of these places reinvents the wheel with the same C code, same
rotation constants, and same symmetry-breaking constants.

This commit tidies things up a bit by placing macros for the
permutations and constants into siphash.h, where each of the three .c
users can access them. It also leaves a note dissuading more users of
them from emerging.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-04-19 17:49:12 +08:00
arch xtensa: use fallback for random_get_entropy() instead of zero 2023-04-19 17:49:11 +08:00
block iocost: don't reset the inuse weight of under-weighted debtors 2023-04-19 17:48:22 +08:00
certs certs: Add support for using elliptic curve keys for signing modules 2021-08-23 19:55:42 +03:00
crypto random: replace custom notifier chain with standard one 2023-04-19 17:49:09 +08:00
Documentation random: fix sysctl documentation nits 2023-04-19 17:49:10 +08:00
drivers siphash: use one source of truth for siphash permutations 2023-04-19 17:49:12 +08:00
fs afs: Fix afs_getattr() to refetch file status if callback break occurred 2023-04-19 17:49:02 +08:00
include siphash: use one source of truth for siphash permutations 2023-04-19 17:49:12 +08:00
init init: call time_init() before rand_initialize() 2023-04-19 17:49:10 +08:00
ipc ipc/sem: do not sleep with a spin lock held 2023-04-19 17:45:01 +08:00
kernel timekeeping: Add raw clock fallback for random_get_entropy() 2023-04-19 17:49:10 +08:00
lib siphash: use one source of truth for siphash permutations 2023-04-19 17:49:12 +08:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm mm/kfence: reset PG_slab and memcg_data before freeing __kfence_pool 2023-04-19 17:48:53 +08:00
net mptcp: Do TCP fallback on early DSS checksum failure 2023-04-19 17:49:02 +08:00
samples x86: Prepare inline-asm for straight-line-speculation 2023-04-19 17:48:43 +08:00
scripts x86: Add straight-line-speculation mitigation 2023-04-19 17:48:43 +08:00
security lockdown: also lock down previous kgdb use 2023-04-19 17:49:02 +08:00
sound ALSA: hda - fix unused Realtek function when PM is not enabled 2023-04-19 17:48:57 +08:00
tools selftests: add ping test with ping_group_range tuned 2023-04-19 17:49:01 +08:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2023-04-19 17:44:58 +08:00
virt KVM: avoid NULL pointer dereference in kvm_dirty_ring_push 2023-04-19 17:47:52 +08:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: add Andrej Shadura 2021-10-18 20:22:03 -10:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: add git tree for random.c 2023-04-19 17:49:03 +08:00
Makefile Linux 5.15.43 2023-04-19 17:49:02 +08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.