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Vladimir Oltean 200004e98b net: mscc: ocelot: restrict tc-trap actions to VCAP IS2 lookup 0 
[ Upstream commit 477d2b9162 ]

Once the CPU port was added to the destination port mask of a packet, it
can never be cleared, so even packets marked as dropped by the MASK_MODE
of a VCAP IS2 filter will still reach it. This is why we need the
OCELOT_POLICER_DISCARD to "kill dropped packets dead" and make software
stop seeing them.

We disallow policer rules from being put on any other chain than the one
for the first lookup, but we don't do this for "drop" rules, although we
should. This change is merely ascertaining that the rules dont't
(completely) work and letting the user know.

The blamed commit is the one that introduced the multi-chain architecture
in ocelot. Prior to that, we should have always offloaded the filters to
VCAP IS2 lookup 0, where they did work.

Fixes: 1397a2eb52 ("net: mscc: ocelot: create TCAM skeleton from tc filter chains")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-05-18 10:28:12 +02:00
arch KVM: LAPIC: Enable timer posted-interrupt only when mwait/hlt is advertised 2022-05-12 12:32:42 +02:00
block Revert "block: inherit request start time from bio for BLK_CGROUP" 2022-05-09 09:16:29 +02:00
certs certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty 2022-01-23 00:08:44 +09:00
crypto crypto: xts - Add softdep on ecb 2022-04-08 13:58:36 +02:00
Documentation dt-bindings: pci: apple,pcie: Drop max-link-speed from example 2022-05-12 12:32:38 +02:00
drivers net: mscc: ocelot: restrict tc-trap actions to VCAP IS2 lookup 0 2022-05-18 10:28:12 +02:00
fs udf: Avoid using stale lengthOfImpUse 2022-05-15 20:20:52 +02:00
include net: Fix features skip in for_each_netdev_feature() 2022-05-18 10:28:12 +02:00
init init/main.c: return 1 from handled __setup() functions 2022-04-13 19:27:23 +02:00
ipc ipc/sem: do not sleep with a spin lock held 2022-02-04 09:25:05 -08:00
kernel genirq: Synchronize interrupt thread startup 2022-05-12 12:32:22 +02:00
lib hex2bin: fix access beyond string end 2022-05-09 09:16:15 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm: fix invalid page pointer returned with FOLL_PIN gups 2022-05-15 20:20:54 +02:00
net net: rds: use maybe_get_net() when acquiring refcount on TCP sockets 2022-05-18 10:28:12 +02:00
samples samples/bpf, xdpsock: Fix race when running for fix duration of time 2022-04-08 13:58:18 +02:00
scripts gcc-plugins: latent_entropy: use /dev/urandom 2022-04-20 09:36:24 +02:00
security Fix incorrect type in assignment of ipv6 port for audit 2022-04-08 13:58:37 +02:00
sound ALSA: hda/realtek: Fix mute led issue on thinkpad with cs35l41 s-codec 2022-05-12 12:32:32 +02:00
tools selftest/vm: verify remap destination address in mremap_test 2022-05-12 12:32:43 +02:00
usr kbuild: remove include/linux/cyclades.h from header file check 2022-01-27 08:51:08 +01:00
virt KVM: avoid NULL pointer dereference in kvm_dirty_ring_push 2022-04-13 19:27:41 +02:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.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 MAINTAINERS: Update Jisheng's email address 2022-03-08 17:30:32 +01:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
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 net: dsa: realtek-smi: move to subdirectory 2022-04-08 13:58:12 +02:00
Makefile Linux 5.17.8 2022-05-15 20:20:54 +02:00
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.