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/kernel/linux/linux-5.10/Documentation/networking/
Dmac80211-auth-assoc-deauth.txt9 participant userspace
14 userspace->mac80211: authenticate
44 mac80211->userspace: RX auth frame
48 userspace->mac80211: associate
71 mac80211->userspace: associated
73 note left of userspace: associated now
76 note over userspace
80 userspace->mac80211: authorized
84 userspace->mac80211: deauthenticate/disassociate
95 mac80211->userspace: disconnected
Doperstates.rst22 Thanks to 802.1X, userspace must be granted the possibility to
26 and changeable from userspace under certain rules.
29 2. Querying from userspace
35 important for setting from userspace.
59 Interface is in unknown state, neither driver nor userspace has set
90 contains link policy. This is needed for userspace interaction
113 real hardware, it is possible to set this bit from userspace. One
143 IF_OPER_UP if userspace interaction is disabled. Otherwise
144 IF_OPER_DORMANT with the possibility for userspace to initiate the
148 4. Setting from userspace
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Dopenvswitch.rst7 The Open vSwitch kernel module allows flexible userspace control over
16 table" that userspace populates with "flows" that map from keys based
24 no match, it queues the packet to userspace for processing (as part of
25 its processing, userspace will likely set up a flow to handle further
38 to Open vSwitch is designed to allow carefully written userspace
42 kernel module passes a packet to userspace, it also passes along the
47 - If userspace's notion of the flow key for the packet matches the
50 - If the kernel's flow key includes more fields than the userspace
52 headers but userspace stopped at the Ethernet type (because it
57 - If the userspace flow key includes more fields than the
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/kernel/linux/linux-5.10/Documentation/admin-guide/device-mapper/
Ddm-init.rst8 The first is to build an initial ramdisk which boots to a minimal userspace
41 activation of certain DM targets without first using userspace tools to check
45 `cache` constrained, userspace should verify cache device
48 `era` constrained, userspace should verify metadata device
51 `log-writes` constrained, userspace should verify metadata device
52 `mirror` constrained, userspace should verify main/mirror device
53 `raid` constrained, userspace should verify metadata device
54 `snapshot` constrained, userspace should verify src/dst device
56 `snapshot-merge` constrained, userspace should verify src/dst device
58 `switch` constrained, userspace should verify dev path
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Ddm-log.rst25 userspace drivers/md/dm-log-userspace* include/linux/dm-log-userspace.h
40 The "userspace" log type
42 This log type simply provides a way to export the log API to userspace,
44 logging requests to userspace, where a daemon receives and processes the
47 The structure used for communication between kernel and userspace are
48 located in include/linux/dm-log-userspace.h. Due to the frequency,
50 kernel and userspace, 'connector' is used as the interface for
53 There are currently two userspace log implementations that leverage this
/kernel/linux/linux-5.10/Documentation/infiniband/
Duser_verbs.rst6 enables direct userspace access to IB hardware via "verbs," as
13 userspace driver for your InfiniBand hardware. For example, to use
15 libmthca userspace driver be installed.
23 directly to hardware registers mmap()ed into userspace, with no
30 Status is returned to userspace as the return value of the write()
38 of which resources are attached to a given userspace context. The
40 between kernel pointers and opaque userspace handles, so that kernel
41 pointers are never exposed to userspace and userspace cannot trick
50 Direct userspace I/O requires that memory regions that are potential
73 and so on. Since the InfiniBand userspace verbs should be safe for
/kernel/linux/linux-5.10/Documentation/virt/kvm/
Ds390-diag.rst20 userspace.
33 The supported DIAGNOSE function codes vary by the userspace used. For
45 virtio subfunctions depend on KVM's userspace. Generally, userspace
53 Handled by userspace.
56 Handled by userspace.
59 Handled by userspace.
62 Handled by either userspace or KVM (ioeventfd case).
84 This function code is handled by userspace.
/kernel/linux/linux-5.10/drivers/s390/crypto/
Dzcrypt_api.h79 long (*send_cprb)(bool userspace, struct zcrypt_queue *, struct ica_xcRB *,
81 long (*send_ep11_cprb)(bool userspace, struct zcrypt_queue *, struct ep11_urb *,
165 static inline unsigned long z_copy_from_user(bool userspace, in z_copy_from_user() argument
170 if (likely(userspace)) in z_copy_from_user()
176 static inline unsigned long z_copy_to_user(bool userspace, in z_copy_to_user() argument
181 if (likely(userspace)) in z_copy_to_user()
Dzcrypt_msgtype6.c391 static int XCRB_msg_to_type6CPRB_msgX(bool userspace, struct ap_message *ap_msg, in XCRB_msg_to_type6CPRB_msgX() argument
468 if (z_copy_from_user(userspace, &(msg->cprbx), xcRB->request_control_blk_addr, in XCRB_msg_to_type6CPRB_msgX()
492 z_copy_from_user(userspace, req_data, xcRB->request_data_address, in XCRB_msg_to_type6CPRB_msgX()
499 static int xcrb_msg_to_type6_ep11cprb_msgx(bool userspace, struct ap_message *ap_msg, in xcrb_msg_to_type6_ep11cprb_msgx() argument
551 if (z_copy_from_user(userspace, &(msg->cprbx.cprb_len), in xcrb_msg_to_type6_ep11cprb_msgx()
719 static int convert_type86_xcrb(bool userspace, struct zcrypt_queue *zq, in convert_type86_xcrb() argument
727 if (z_copy_to_user(userspace, xcRB->reply_control_blk_addr, in convert_type86_xcrb()
734 if (z_copy_to_user(userspace, xcRB->reply_data_addr, in convert_type86_xcrb()
750 static int convert_type86_ep11_xcrb(bool userspace, struct zcrypt_queue *zq, in convert_type86_ep11_xcrb() argument
761 if (z_copy_to_user(userspace, (char __force __user *)xcRB->resp, in convert_type86_ep11_xcrb()
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/kernel/linux/linux-5.10/Documentation/driver-api/
Dsync_file.rst13 to/from userspace. It enables userspace to do explicit fencing, where instead
15 driver) sends the fence related to the buffer to userspace via a sync_file.
23 Sync files allows userspace awareness on buffer sharing synchronization between
32 Sync files can go either to or from userspace. When a sync_file is sent from
33 the driver to userspace we call the fences it contains 'out-fences'. They are
40 userspace we call these fence(s) 'in-fences'. Receiving in-fences means that
47 When a driver needs to send an out-fence userspace it creates a sync_file.
63 The sync_file fd now can be sent to userspace.
71 When userspace needs to send an in-fence to the driver it passes file descriptor
Ddma-buf.rst12 sg_table and exposed to userspace as a file descriptor to allow passing
55 Mostly a DMA buffer file descriptor is simply an opaque object for userspace,
80 To avoid this problem, userspace must have a way to request O_CLOEXEC
83 userspace control setting of O_CLOEXEC flag passed in to dma_buf_fd().
194 The time this fence completes is entirely under userspace's control.
200 that userspace uses for synchronization across engines or with the CPU, which
208 Common to all these schemes is that userspace controls the dependencies of these
211 protect against malicious userspace:
213 * Only the kernel knows about all DMA fence dependencies, userspace is not aware
216 * Only userspace knows about all dependencies in indefinite fences and when
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/kernel/linux/linux-5.10/drivers/dma-buf/
DKconfig10 userspace. It enables send/receive 'struct dma_fence' objects to/from
11 userspace via Sync File fds for synchronization between drivers via
12 userspace components. It has been ported from Android.
16 is attached to the buffer and is transferred via userspace, using Sync
31 drivers from userspace. Intended for test and debug only.
34 bool "userspace dmabuf misc driver"
39 A driver to let userspace turn memfd regions into dma-bufs.
49 problem where userspace is able to pin unrestricted amounts of memory
78 allows userspace to allocate dma-bufs that can be shared
/kernel/linux/linux-5.10/drivers/connector/
DKconfig4 tristate "Connector - unified userspace <-> kernelspace linker"
7 This is unified userspace <-> kernelspace connector working on top
16 bool "Report process events to userspace"
20 Provide a connector that reports process events to userspace. Send
/kernel/linux/linux-5.10/Documentation/firmware-guide/acpi/
Dacpi-lid.rst49 Exceptions for the userspace users of the ACPI lid device driver
52 The ACPI button driver exports the lid state to the userspace via the
59 it is advised for the userspace program to not to solely rely on this file
62 The ACPI button driver emits the following input event to the userspace:
66 triggered events to the userspace. However, given the fact that the buggy
70 If the userspace hasn't been prepared to ignore the unreliable "opened"
84 This option is the default behavior during the period the userspace
96 If the userspace has been prepared to ignore the unreliable "opened" events
104 to the userspace by always pairing "closed" input events with complement
106 notifications can be delivered to the userspace when the lid is actually
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/kernel/linux/linux-5.10/Documentation/driver-api/gpio/
Dusing-gpio.rst20 In Linux GPIO lines also have a userspace ABI.
22 The userspace ABI is intended for one-off deployments. Examples are prototypes,
33 from userspace will likely be a good fit for using GPIO lines from userspace as
36 Do not under any circumstances abuse the GPIO userspace ABI to cut corners in
39 any circumstances deploy any uniform products using GPIO from userspace.
41 The userspace ABI is a character device for each GPIO hardware unit (GPIO chip).
43 ``/dev/gpiochipN``. Examples of how to directly use the userspace ABI can be
/kernel/linux/linux-5.10/Documentation/target/
Dtcmu-design.rst31 allows userspace programs to be written which act as iSCSI targets.
58 If the target is a userspace process, supporting these is easy. tgt,
60 modules just use the available userspace libraries for RBD and GLFS.
65 kernel, another approach is to create a userspace pass-through
86 - Cleanly handle if userspace:
96 - Simple to write a userspace backend
103 between kernel and userspace. Within this region is: a control area
108 development in userspace, and this is conceptually very close to the
112 userspace to determine how large the shared region is) and signaling
128 userspace (respectively) to put commands on the ring, and indicate
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/kernel/linux/linux-5.10/Documentation/x86/
Dpti.rst15 page tables for use only when running userspace applications. When
20 The userspace page tables contain only a minimal amount of kernel
38 kernels without PTI. This includes a complete mapping of userspace
44 userspace upon executing its first instruction.
46 The userspace page tables map only the kernel data needed to enter
51 For new userspace mappings, the kernel makes the entries in its
55 userspace page tables' PGD.
59 userspace page tables to manage. One PTE to lock, one set of
87 things into the userspace page tables. The downside is
90 mapped into both kernel and userspace page tables. This
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/kernel/linux/linux-5.10/Documentation/gpu/
Ddrm-uapi.rst9 addition, drivers export device-specific interfaces for use by userspace
44 what the userspace side for new uAPI needs to look like. This section here
48 open-sourced userspace patches, and those patches must be reviewed and ready for
52 hardware, with userspace and kernel by necessity having to work together really
56 infeasible to differentiate between behaviour that's required by userspace, and
60 Without access to the full source code of all userspace users that means it
61 becomes impossible to change the implementation details, since userspace could
67 open-source userspace of the DRM subsystem. DRM developers are perfectly fine
68 if closed-source blob drivers in userspace use the same uAPI as the open
73 - Any new userspace interface must have an open-source implementation as
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/kernel/linux/linux-5.10/drivers/infiniband/
DKconfig19 tristate "InfiniBand userspace MAD support"
23 is the kernel side of the userspace MAD support, which allows
24 userspace processes to send and receive MADs. You will also
29 tristate "InfiniBand userspace access (verbs and CM)"
33 kernel side of userspace verbs and the userspace
34 communication manager (CM). This allows userspace processes
/kernel/linux/linux-5.10/Documentation/accounting/
Dtaskstats.rst7 per-process statistics from the kernel to userspace.
30 To get statistics during a task's lifetime, userspace opens a unicast netlink
35 To obtain statistics for tasks which are exiting, the userspace listener
43 an additional record containing the per-tgid stats is also sent to userspace.
81 the task/process for which userspace wants statistics.
88 the cpumask would be "1-3,5,7-8". If userspace forgets to deregister interest
93 2. Response for a command: sent from the kernel in response to a userspace
121 stats in userspace alone is inefficient and potentially inaccurate (due to lack
128 gets sent to userspace (along with the per-task data).
147 interface to return them. Since userspace processes each netlink attribute
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/kernel/linux/linux-5.10/Documentation/ABI/obsolete/
Dsysfs-gpio8 userspace. GPIOs are only made available to userspace by an explicit
10 kernel code, it may be exported by userspace (and unexported later).
19 /export ... asks the kernel to export a GPIO to userspace
/kernel/linux/linux-5.10/arch/um/kernel/
Dtlb.c39 int userspace; member
46 #define INIT_HVC(mm, force, userspace) \ argument
51 .userspace = userspace, \
72 if (hvc->userspace) in do_ops()
83 if (hvc->userspace) in do_ops()
95 if (hvc->userspace) in do_ops()
131 if (hvc->userspace) in add_mmap()
335 int ret = 0, userspace = 1; in fix_range_common() local
337 hvc = INIT_HVC(mm, force, userspace); in fix_range_common()
372 int updated = 0, err = 0, force = 0, userspace = 0; in flush_tlb_kernel_range_common() local
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/kernel/linux/linux-5.10/drivers/uio/
DKconfig6 Enable this to allow the userspace driver core code to be
7 built. This code allows userspace programs easy access to
9 to be written in userspace. Note that a small kernel driver
21 driver requires a userspace component called cif that handles
34 This kernel driver requires that the matching userspace driver
80 Automata GmbH. The userspace part of this driver will be
102 This driver requires a userspace component that comes with the card
123 together with the userspace netX stack from Hilscher.
151 A sample userspace application using this driver is available
165 to network and storage devices from userspace.
/kernel/linux/linux-5.10/Documentation/bpf/
Dprog_cgroup_sockopt.rst27 back to the userspace after all other BPF programs in the cgroup
37 * ``0`` - reject the syscall, ``EPERM`` will be returned to the userspace.
47 has been increased above initial ``getsockopt`` value (i.e. userspace
59 * ``0`` - reject the syscall, ``EPERM`` will be returned to the userspace.
60 * ``1`` - success: copy ``optval`` and ``optlen`` to userspace, return
95 use the original buffer from the userspace. Any modifications
101 ``PAGE_SIZE``, the userspace will receive ``EFAULT`` errno.
/kernel/linux/linux-5.10/fs/fuse/
DKconfig7 in a userspace program.
18 If you want to develop a userspace FS, or if you want to use
26 implemented in userspace.
28 If you want to develop or use a userspace character device

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