This work adds a new, minimal BPF-programmable device called "netkit"
(former PoC code-name "meta") we recently presented at LSF/MM/BPF. The
core idea is that BPF programs are executed within the drivers xmit routine
and therefore e.g. in case of containers/Pods moving BPF processing closer
to the source.

One of the goals was that in case of Pod egress traffic, this allows to
move BPF programs from hostns tcx ingress into the device itself, providing
earlier drop or forward mechanisms, for example, if the BPF program
determines that the skb must be sent out of the node, then a redirect to
the physical device can take place directly without going through per-CPU
backlog queue. This helps to shift processing for such traffic from softirq
to process context, leading to better scheduling decisions/performance (see
measurements in the slides).

In this initial version, the netkit device ships as a pair, but we plan to
extend this further so it can also operate in single device mode. The pair
comes with a primary and a peer device. Only the primary device, typically
residing in hostns, can manage BPF programs for itself and its peer. The
peer device is designated for containers/Pods and cannot attach/detach
BPF programs. Upon the device creation, the user can set the default policy
to 'pass' or 'drop' for the case when no BPF program is attached.

Additionally, the device can be operated in L3 (default) or L2 mode. The
management of BPF programs is done via bpf_mprog, so that multi-attach is
supported right from the beginning with similar API and dependency controls
as tcx. For details on the latter see commit 053c8e1f ("bpf: Add generic
attach/detach/query API for multi-progs"). tc BPF compatibility is provided,
so that existing programs can be easily migrated.

Going forward, we plan to use netkit devices in Cilium as the main device
type for connecting Pods. They will be operated in L3 mode in order to
simplify a Pod's neighbor management and the peer will operate in default
drop mode, so that no traffic is leaving between the time when a Pod is
brought up by the CNI plugin and programs attached by the agent.
Additionally, the programs we attach via tcx on the physical devices are
using bpf_redirect_peer() for inbound traffic into netkit device, hence the
latter is also supporting the ndo_get_peer_dev callback. Similarly, we use
bpf_redirect_neigh() for the way out, pushing from netkit peer to phys device
directly. Also, BIG TCP is supported on netkit device. For the follow-up
work in single device mode, we plan to convert Cilium's cilium_host/_net
devices into a single one.

An extensive test suite for checking device operations and the BPF program
and link management API comes as BPF selftests in this series.
Co-developed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://github.com/borkmann/iproute2/tree/pr/netkit
Link: http://vger.kernel.org/bpfconf2023_material/tcx_meta_netdev_borkmann.pdf (24ff.)
Link: https://lore.kernel.org/r/20231024214904.29825-2-daniel@iogearbox.netSigned-off-by: Martin KaFai Lau <martin.lau@kernel.org>

Update MAINTAINERS entries for Intel IXP4xx SoCs.

Linus has been handling all IXP4xx stuff since 2019 or so.
Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Deepak Saxena <dsaxena@plexity.net>
Link: https://lore.kernel.org/r/m3ttqxu4ru.fsf@t19.piap.plSigned-off-by: Arnd Bergmann <arnd@arndb.de>

After the cops driver is removed, ipddp is now the only
CONFIG_DEV_APPLETALK but as far as I can tell, this also has no users
and can be removed, making appletalk support purely based on ethertalk,
using ethernet hardware.

Link: https://lore.kernel.org/netdev/e490dd0c-a65d-4acf-89c6-c06cb48ec880@app.fastmail.com/
Link: https://lore.kernel.org/netdev/9cac4fbd-9557-b0b8-54fa-93f0290a6fb8@schmorgal.com/
Cc: Doug Brown <doug@schmorgal.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20231009141139.1766345-1-arnd@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

It is pretty obvious that I haven't done much on the IRQ side
for a while, and it is unlikely that I'll have more bandwidth
for it any time soon. People keep sending me patches that
I end-up reviewing in a cursory manner, which isn't great for
anyone.

So in everyone's interest, I'm removing myself from the list
of maintainers and leave the irqchip and irqdomain subsystems
in Thomas' capable hands.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231002141302.3409485-3-maz@kernel.org

The ARM GIC maintenance is currently covered by the blanket
IRQCHIP DRIVERS entry, which I'm about to remove myself from.

It is unlikely that anyone is mad enough to pick this up,
so I'll keep doing that for the foreseable future.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <zenghui.yu@linux.dev>
Link: https://lore.kernel.org/r/20231002141302.3409485-2-maz@kernel.org

dm-devel@redhat.com has migrated to dm-devel@lists.linux.dev
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

Since there's no alternate driver, change this entry from obsolete
to orphan.
Signed-off-by: Harini Katakam <harini.katakam@amd.com>
Link: https://lore.kernel.org/r/20231005131039.25881-1-harini.katakam@amd.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

I am a top reviewer mainly for MediaTek SoC related patches in most
subsystems and I've also been upstreaming both improvements, fixes
and new drivers and devicetrees when required.

The MediaTek scene saw a generous increase in number of patches that
are sent to the lists every week, increasing the amount of required
efforts to maintain the MTK bits overall, and we will possibly see
even more of that.

For this reason, and also because of suggestions and encouragement
coming from the community, I'm stepping up to be a co-maintainer of
MediaTek SoCs support.
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20230929082009.71843-1-angelogioacchino.delregno@collabora.com
Link: https://lore.kernel.org/r/20231003-mediatek-fixes-v6-7-v1-1-dad7cd62a8ff@collabora.comSigned-off-by: Arnd Bergmann <arnd@arndb.de>

AR7 is going to be removed from the Kernel, so remove its networking
support in form of the cpmac driver. This allows us to remove the
platform because this driver includes a platform specific header.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/all/20230922061530.3121-6-wsa+renesas@sang-engineering.com/Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Use my kernel.org account instead.

The other one will bounce by the end of the year.
Signed-off-by: Matthieu Baerts <matttbe@kernel.org>
Signed-off-by: Mat Martineau <martineau@kernel.org>
Link: https://lore.kernel.org/r/20231004-send-net-20231004-v1-3-28de4ac663ae@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Commit 9431063a ("dpll: core: Add DPLL framework base functions") adds
the section DPLL SUBSYSTEM in MAINTAINERS and includes a file entry to the
non-existing file 'include/net/dpll.h'.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains about a
broken reference. Looking at the file stat of the commit above, this entry
clearly intended to refer to 'include/linux/dpll.h'.

Adjust this header file entry in DPLL SUBSYSTEM.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>

Commit 31345a0f ("MAINTAINERS: Replace my email address") added 13
instances of ...@broadcom.com and one of only ...@broadcom. I didn't
double check if Broadcom really owns that TLD, but git send-email
doesn't accept it, so add ".com" to that one bogous(?) instance.

Fixes: 31345a0f ("MAINTAINERS: Replace my email address")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

LL TEMAC IP is no longer supported. Hence add an entry marking the
driver as obsolete.
Signed-off-by: Harini Katakam <harini.katakam@amd.com>
Link: https://lore.kernel.org/r/20230920115047.31345-1-harini.katakam@amd.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Since I will continue to work on Nouveau consistently, also beyond my
former and still ongoing VM_BIND/EXEC work, add myself to the list of
Nouveau maintainers.
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230926014913.7721-1-dakr@redhat.com

I've changed employers, have company email that deals with patch-based
workflows without too much of a headache, and am trying to steer some
content out of my personal mail.
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Link: https://lore.kernel.org/r/20230925030647.40283-1-andrew@codeconstruct.com.auSigned-off-by: Joel Stanley <joel@jms.id.au>

The description for joel/aspeed.git on git.kernel.org currently says:

    Old Aspeed tree. Please see joel/bmc.git

Let's update MAINTAINERS accordingly.
Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Acked-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20230922223405.24717-2-zev@bewilderbeest.netSigned-off-by: Joel Stanley <joel@jms.id.au>

I have resigned, and will no longer be taking as active a role in
nouveau development.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918222225.8629-1-skeggsb@gmail.com

Add x86 platform drivers patchwork which has been missing from
MAINTAINERS.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230919123948.1583-1-ilpo.jarvinen@linux.intel.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

Hans has been asking for another person to help as the maintainer of
the x86 platform driver because Mark has not been able to find time to
do that. I got asked for the task and have been reviewing the relevant
patches for a while now but lets make it more official by adding the
MAINTAINERS entries.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230918102901.17669-2-ilpo.jarvinen@linux.intel.comAcked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

http://linux-ax25.org has been down for nearly a year. Its official
replacement is https://linux-ax25.in-berlin.de. Update all links to the
new URL.

Link: https://marc.info/?m=166792551600315Signed-off-by: Peter Lafreniere <peter@n8pjl.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>

Looks like arm_pmuv3.h isn't caught by the ARM PMU maintainers entry.
Fix it with a wildcard.
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20230915202421.2706446-1-oliver.upton@linux.devSigned-off-by: Will Deacon <will@kernel.org>

DPLL framework is used to represent and configure DPLL devices
in systems. Each device that has DPLL and can configure inputs
and outputs can use this framework.

Implement core framework functions for further interactions
with device drivers implementing dpll subsystem, as well as for
interactions of DPLL netlink framework part with the subsystem
itself.
Co-developed-by: Milena Olech <milena.olech@intel.com>
Signed-off-by: Milena Olech <milena.olech@intel.com>
Co-developed-by: Michal Michalik <michal.michalik@intel.com>
Signed-off-by: Michal Michalik <michal.michalik@intel.com>
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Co-developed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This glue driver is created based on the arch-code
implemented earlier with the platform-specific settings.

Use syscon for SYSCON register access.

And modify MAINTAINERS to add a new F: entry for this driver.

Partially based on the previous work by Serge Semin.
Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add devicetree binding document for Loongson-1 Ethernet controller.
And modify MAINTAINERS to add a new F: entry for
Loongson1 dt-binding documents.
Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

As Shubham has been inactive since 2017, Add myself for ARM32 BPF JIT.
Signed-off-by: Puranjay Mohan <puranjay12@gmail.com>
Link: https://lore.kernel.org/r/20230907230550.1417590-10-puranjay12@gmail.comSigned-off-by: Alexei Starovoitov <ast@kernel.org>

When I've upstreamed the gpio-regmap driver, I didn't have that much
experience with kernel maintenance, so I've just added myself as a
reviewer. I've gained quite some experience, so I'd like to step up
as a maintainer for it.
Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Signed-off-by: Andy Gospodarek <gospo@broadcom.com>
Signed-off-by: Pavan Chebbi pavan.chebbi@broadcom.com
Signed-off-by: Siva Reddy Kallam <siva.kallam@broadcom.com>
Signed-off-by: Prashant Sreedharan <prashant.sreedharan@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

It has been pointed out that naming a subsystem "genpd" isn't very
self-explanatory and the acronym itself that means Generic PM Domain, is
known only by a limited group of people.

In a way to improve the situation, let's rename the subsystem to pmdomain,
which ideally should indicate that this is about so called Power Domains or
"PM domains" as we often also use within the Linux Kernel terminology.
Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230912221127.487327-1-ulf.hansson@linaro.org

Add system pm ops to save and restore pinctrl registers
when suspending and resuming the driver, respectively.
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/r/20230905122105.117000-3-hal.feng@starfivetech.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

The wiki has been archived and is not updated anymore. Remove or replace
the links in files that contain it (MAINTAINERS, Kconfig, docs).
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

The new gfs2@ list will also be used for dlm development.
Signed-off-by: Andrew Price <anprice@redhat.com>
Acked-by: David Teigland <teigland@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

Signed-off-by: Andrew Price <anprice@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

The ath12k wireless driver now has a wiki, so advertise it.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230829-ath12kwiki-v1-1-df37127527a1@quicinc.com

As hostap is marked as obsolete there's no need to have a maintainer. Also
remove the link to the web page.
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230828123603.87621-5-kvalo@kernel.org

Luca's tree hasn't been used for 10 years so remove it.
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230828123603.87621-4-kvalo@kernel.org

Jes' tree hasn't been used for six years so remove it.
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230828123603.87621-3-kvalo@kernel.org

Linville's tree hasn't been used for something like 10 years so remove it.
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230828123603.87621-2-kvalo@kernel.org

The top level entry for wireless drivers already contains to the wiki so no
need to duplicate that in driver entries:

NETWORKING DRIVERS (WIRELESS)
[...]
W:	https://wireless.wiki.kernel.org/Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230828123603.87621-1-kvalo@kernel.org

Update the MAINTAINERS email for TEXAS INSTRUMENTS ASoC DRIVERS.
Signed-off-by: Kevin-Lu <kevin-lu@ti.com>
Link: https://lore.kernel.org/r/20230903161439.85-1-kevin-lu@ti.comSigned-off-by: Mark Brown <broonie@kernel.org>

Make it easier to figure out where to send patches for this file.

Link: https://lkml.kernel.org/r/efbc7689d35a48ff402644d696aa9a8d8bb6333a.1692877089.git.baruch@tkos.co.ilSigned-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>