linux-xiaomi-chiron

Linux mainline fork with MSM8998 patches | https://mainline.space | Currently supported devices: OnePlus 5/5T, Xiaomi Mi 6, F(x)tec Pro¹ (2019 QX1000 model) & Sony Xperia XZ Premium (UNTESTED!)

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Vladimir Oltean 33cb0ff30c net: mscc: ocelot: don't let phylink re-enable TX PAUSE on the NPI port Since commit `b39648079d` ("net: mscc: ocelot: disable flow control on NPI interface"), flow control should be disabled on the DSA CPU port when used in NPI mode. However, the commit blamed in the Fixes: tag below broke this, because it allowed felix_phylink_mac_link_up() to overwrite SYS_PAUSE_CFG_PAUSE_ENA for the DSA CPU port. This issue became noticeable since the device tree update from commit `8fcea7be57` ("arm64: dts: ls1028a: mark internal links between Felix and ENETC as capable of flow control"). The solution is to check whether this is the currently configured NPI port from ocelot_phylink_mac_link_up(), and to not modify the statically disabled PAUSE frame transmission if it is. When the port is configured for lossless mode as opposed to tail drop mode, but the link partner (DSA master) doesn't observe the transmitted PAUSE frames, the switch termination throughput is much worse, as can be seen below. Before: root@debian:~# iperf3 -c 192.168.100.2 Connecting to host 192.168.100.2, port 5201 [ 5] local 192.168.100.1 port 37504 connected to 192.168.100.2 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 28.4 MBytes 238 Mbits/sec 357 22.6 KBytes [ 5] 1.00-2.00 sec 33.6 MBytes 282 Mbits/sec 426 19.8 KBytes [ 5] 2.00-3.00 sec 34.0 MBytes 285 Mbits/sec 343 21.2 KBytes [ 5] 3.00-4.00 sec 32.9 MBytes 276 Mbits/sec 354 22.6 KBytes [ 5] 4.00-5.00 sec 32.3 MBytes 271 Mbits/sec 297 18.4 KBytes ^C[ 5] 5.00-5.06 sec 2.05 MBytes 270 Mbits/sec 45 19.8 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-5.06 sec 163 MBytes 271 Mbits/sec 1822 sender [ 5] 0.00-5.06 sec 0.00 Bytes 0.00 bits/sec receiver After: root@debian:~# iperf3 -c 192.168.100.2 Connecting to host 192.168.100.2, port 5201 [ 5] local 192.168.100.1 port 49470 connected to 192.168.100.2 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 112 MBytes 941 Mbits/sec 259 143 KBytes [ 5] 1.00-2.00 sec 110 MBytes 920 Mbits/sec 329 144 KBytes [ 5] 2.00-3.00 sec 112 MBytes 936 Mbits/sec 255 144 KBytes [ 5] 3.00-4.00 sec 110 MBytes 927 Mbits/sec 355 105 KBytes [ 5] 4.00-5.00 sec 110 MBytes 926 Mbits/sec 350 156 KBytes [ 5] 5.00-6.00 sec 110 MBytes 925 Mbits/sec 305 148 KBytes [ 5] 6.00-7.00 sec 110 MBytes 924 Mbits/sec 320 143 KBytes [ 5] 7.00-8.00 sec 110 MBytes 925 Mbits/sec 273 97.6 KBytes [ 5] 8.00-9.00 sec 109 MBytes 913 Mbits/sec 299 141 KBytes [ 5] 9.00-10.00 sec 110 MBytes 922 Mbits/sec 287 146 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.08 GBytes 926 Mbits/sec 3032 sender [ 5] 0.00-10.00 sec 1.08 GBytes 925 Mbits/sec receiver Fixes: `de274be32c` ("net: dsa: felix: set TX flow control according to the phylink_mac_link_up resolution") Reported-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2022-01-13 12:52:15 +00:00
arch	Power management updates for 5.17-rc1	2022-01-10 20:34:00 -08:00
block	block-5.16-2021-12-19	2021-12-19 12:38:53 -08:00
certs	certs: Add support for using elliptic curve keys for signing modules	2021-08-23 19:55:42 +03:00
crypto	lib/crypto: blake2s: include as built-in	2022-01-07 00:25:25 +01:00
Documentation	dt-bindings: net: oxnas-dwmac: Add bindings for OX810SE	2022-01-12 09:05:02 -08:00
drivers	net: mscc: ocelot: don't let phylink re-enable TX PAUSE on the NPI port	2022-01-13 12:52:15 +00:00
fs	Networking changes for 5.17.	2022-01-10 19:06:09 -08:00
include	net: sched: do not allocate a tracker in tcf_exts_init()	2022-01-11 20:40:16 -08:00
init	Power management updates for 5.17-rc1	2022-01-10 20:34:00 -08:00
ipc	shm: extend forced shm destroy to support objects from several IPC nses	2021-11-20 10:35:54 -08:00
kernel	Power management updates for 5.17-rc1	2022-01-10 20:34:00 -08:00
lib	ref_tracker: use __GFP_NOFAIL more carefully	2022-01-12 14:29:50 +00:00
LICENSES	LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes"	2021-07-15 06:31:24 -06:00
mm	slab changes for 5.17	2022-01-10 11:58:12 -08:00
net	sch_api: Don't skip qdisc attach on ingress	2022-01-13 12:34:59 +00:00
samples	Networking changes for 5.17.	2022-01-10 19:06:09 -08:00
scripts	recordmcount.pl: fix typo in s390 mcount regex	2021-12-24 10:20:12 +01:00
security	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-12-31 14:35:40 +00:00
sound	sound fixes for 5.16-rc7	2021-12-23 09:55:58 -08:00
tools	Thermal control updates for 5.17-rc1	2022-01-10 20:43:54 -08:00
usr	initramfs: Check timestamp to prevent broken cpio archive	2021-10-24 13:48:40 +09:00
virt	KVM: downgrade two BUG_ONs to WARN_ON_ONCE	2021-11-26 06:43:28 -05:00
.clang-format	clang-format: Update with the latest for_each macro list	2021-05-12 23:32:39 +02:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.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	media updates for v5.17-rc1	2022-01-10 18:55:43 -08:00
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	Device properties framework updates for 5.17-rc1	2022-01-10 20:48:19 -08:00
Makefile	Linux 5.16	2022-01-09 14:55:34 -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.