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/Documentation/networking/
Dsnmp_counter.rst17 .. _RFC1213 ipInReceives: https://tools.ietf.org/html/rfc1213#page-26
20 beginning of ip_rcv function, always be updated together with
30 .. _RFC1213 ipInDelivers: https://tools.ietf.org/html/rfc1213#page-28
41 .. _RFC1213 ipOutRequests: https://tools.ietf.org/html/rfc1213#page-28
43 The number of packets sent via IP layer, for both single cast and
44 multicast packets, and would always be updated together with
58 `Explicit Congestion Notification`_ for more details.
60 .. _Explicit Congestion Notification: https://tools.ietf.org/html/rfc3168#page-6
64 for the same packet, you might find that IpInReceives count 1, but
73 .. _RFC1213 ipInHdrErrors: https://tools.ietf.org/html/rfc1213#page-27
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Drxrpc.rst1 .. SPDX-License-Identifier: GPL-2.0
7 The RxRPC protocol driver provides a reliable two-phase transport on top of UDP
38 RxRPC is a two-layer protocol. There is a session layer which provides
44 +-------------+
46 +-------------+
48 +-------------+
50 +-------------+
52 +-------------+
57 (1) Part of an RxRPC facility for both kernel and userspace applications by
60 (2) A two-phase protocol. The client transmits a blob (the request) and then
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Dip-sysctl.rst1 .. SPDX-License-Identifier: GPL-2.0
10 ip_forward - BOOLEAN
11 - 0 - disabled (default)
12 - not 0 - enabled
17 parameters to their default state (RFC1122 for hosts, RFC1812
18 for routers)
20 ip_default_ttl - INTEGER
21 Default value of TTL field (Time To Live) for outgoing (but not
25 ip_no_pmtu_disc - INTEGER
27 fragmentation-required ICMP is received, the PMTU to this
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Dethtool-netlink.rst2 Netlink interface for ethtool
9 Netlink interface for ethtool uses generic netlink family ``ethtool``
15 The ethtool netlink interface uses extended ACK for error and warning
23 (``CAP_NET_ADMIN`` in the namespace). Most "get" type requests are allowed for
25 information). In some cases, the request as such is allowed for anyone but
27 wake-on-lan password) omitted.
36 in "set" requests). For these attributes, the "true" value should be passed as
37 number 1 but any non-zero value should be understood as "true" by recipient.
44 Attributes that need to be filled-in by device drivers and that are dumped to
59 ``ETHTOOL_A_HEADER_FLAGS`` u32 flags common for all requests
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/Documentation/i2c/
Dgpio-fault-injection.rst12 'i2c-fault-injector' subdirectory in the Kernel debugfs filesystem, usually
15 injection. They will be described now along with their intended use-cases.
21 -----
31 -----
52 in a bus master driver, make sure you checked your hardware setup for such
53 devices before. And always verify with a scope or logic analyzer!
56 --------------------------
60 it will stop at the ACK phase after the address of the client has been
61 transmitted. Because the device will ACK its presence, this results in SDA
68 -----------------------
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/Documentation/driver-api/md/
Dmd-cluster.rst5 The cluster MD is a shared-device RAID for a cluster, it supports
9 1. On-disk format
12 Separate write-intent-bitmaps are used for each cluster node.
14 and may not yet have finished. The on-disk layout is::
17 -------------------------------------------------------------------
26 - set the appropriate bit (if not already set)
27 - commit the write to all mirrors
28 - schedule the bit to be cleared after a timeout.
35 2. DLM Locks for management
38 There are three groups of locks for managing the device:
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/Documentation/driver-api/surface_aggregator/
Dinternal.rst1 .. SPDX-License-Identifier: GPL-2.0+
49 and Surface Serial Hub (SSH) driver. For the API documentation, refer to:
54 internal-api
63 Lower-level packet transport is implemented in the *packet transport layer
68 packet payloads to higher-level layers.
71 around command-type packet payloads, i.e. requests (sent from host to EC),
79 workqueue for event and asynchronous request completion, and also manages
80 the message counters required for building command messages (``SEQ``,
82 EC for use in other kernel drivers.
84 While the controller layer already provides an interface for other kernel
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Dssh.rst1 .. SPDX-License-Identifier: GPL-2.0+
10 .. |ACK| replace:: ``ACK`` substdef
25 The Surface Serial Hub (SSH) is the central communication interface for the
28 SAM-over-SSH, as opposed to SAM-over-HID for the older generations.
30 On Surface devices with SAM-over-SSH, SAM is connected to the host via UART
33 and power information and events, thermal read-outs and events, and many
34 more. For Surface Laptops, keyboard input is handled via HID directed
38 Note that the standard disclaimer for this subsystem also applies to this
39 document: All of this has been reverse-engineered and may thus be erroneous
42 All CRCs used in the following are two-byte ``crc_itu_t(0xffff, ...)``.
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/Documentation/devicetree/bindings/regulator/
Dqcom,rpmh-regulator.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/regulator/qcom,rpmh-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <bjorn.andersson@linaro.org>
11 - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
14 rpmh-regulator devices support PMIC regulator management via the Voltage
18 changing three parameters for a given regulator, enable state, output
20 parameter for a given regulator, its enable state. Despite its name,
22 It is used for clock buffers, low-voltage switches, and LDO/SMPS regulators
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/Documentation/networking/device_drivers/can/
Dcan327.rst1 .. SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
3 can327: ELM327 driver for Linux SocketCAN
7 --------
14 -----------
16 This driver aims to lower the initial cost for hackers interested in
26 -------------
33 order to fake full-duplex operation.
36 enough to implement simple request-response protocols (such as OBD II),
44 This driver is meant for ELM327 versions 1.4b and up, see below for
50 -----------
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/Documentation/process/
Dmaintainer-netdev.rst1 .. SPDX-License-Identifier: GPL-2.0
3 .. _netdev-FAQ:
10 -----
12 - designate your patch to a tree - ``[PATCH net]`` or ``[PATCH net-next]``
13 - for fixes the ``Fixes:`` tag is required, regardless of the tree
14 - don't post large series (> 15 patches), break them up
15 - don't repost your patches within one 24h period
16 - reverse xmas tree
19 ------
21 netdev is a mailing list for all network-related Linux stuff. This
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Dsubmitting-patches.rst6 For a person or company who wishes to submit a change to the Linux
12 format. For detailed information on how the kernel development process
13 works, see Documentation/process/development-process.rst. Also, read
14 Documentation/process/submit-checklist.rst
15 for a list of items to check before submitting code.
16 For device tree binding patches, read
17 Documentation/devicetree/bindings/submitting-patches.rst.
20 If you're unfamiliar with ``git``, you would be well-advised to learn how to
26 :ref:`Documentation/process/maintainer-handbooks.rst <maintainer_handbooks_main>`.
29 ----------------------------
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/Documentation/admin-guide/device-mapper/
Dvdo.rst1 .. SPDX-License-Identifier: GPL-2.0-only
3 dm-vdo
6 The dm-vdo (virtual data optimizer) device mapper target provides
7 block-level deduplication, compression, and thin provisioning. As a device
20 https://github.com/dm-vdo/vdo/
25 enter or come up in read-only mode. Because read-only mode is indicative of
26 data-loss, a positive action must be taken to bring vdo out of read-only
28 prepare a read-only vdo to exit read-only mode. After running this tool,
34 inspect a vdo target's on-disk metadata. Fortunately, these tools are
35 rarely needed except by dm-vdo developers.
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/Documentation/admin-guide/
Dkernel-parameters.txt8 For some workloads or for debugging purposes
16 force -- enable ACPI if default was off
17 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
18 off -- disable ACPI if default was on
19 noirq -- do not use ACPI for IRQ routing
20 strict -- Be less tolerant of platforms that are not
22 rsdt -- prefer RSDT over (default) XSDT
23 copy_dsdt -- copy DSDT to memory
24 nospcr -- disable console in ACPI SPCR table as
26 For ARM64, ONLY "acpi=off", "acpi=on", "acpi=force" or
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/Documentation/sound/kernel-api/
Dwriting-an-alsa-driver.rst11 Architecture) <http://www.alsa-project.org/>`__ driver. The document
14 consistent, and therefore it would be still a bit help for writing them.
19 low-level driver implementation details. It only describes the standard
26 -------
56 --------------
60 sub-directories contain different modules and are dependent upon the
66 The code for OSS PCM and mixer emulation modules is stored in this
74 This directory and its sub-directories are for the ALSA sequencer. This
76 as snd-seq-midi, snd-seq-virmidi, etc. They are compiled only when
85 -----------------
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