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/linux-6.14.4/tools/testing/selftests/net/
Dipv6_flowlabel_mgr.c1 // SPDX-License-Identifier: GPL-2.0
48 static int flowlabel_get(int fd, uint32_t label, uint8_t share, uint16_t flags) in flowlabel_get() argument
61 return setsockopt(fd, SOL_IPV6, IPV6_FLOWLABEL_MGR, &req, sizeof(req)); in flowlabel_get()
64 static int flowlabel_put(int fd, uint32_t label) in flowlabel_put() argument
71 return setsockopt(fd, SOL_IPV6, IPV6_FLOWLABEL_MGR, &req, sizeof(req)); in flowlabel_put()
74 static void run_tests(int fd) in run_tests() argument
79 explain("cannot get non-existent label"); in run_tests()
80 expect_fail(flowlabel_get(fd, 1, IPV6_FL_S_ANY, 0)); in run_tests()
82 explain("cannot put non-existent label"); in run_tests()
83 expect_fail(flowlabel_put(fd, 1)); in run_tests()
[all …]
Dtun.c1 // SPDX-License-Identifier: GPL-2.0
20 static int tun_attach(int fd, char *dev) in tun_attach() argument
28 return ioctl(fd, TUNSETQUEUE, (void *) &ifr); in tun_attach()
31 static int tun_detach(int fd, char *dev) in tun_detach() argument
39 return ioctl(fd, TUNSETQUEUE, (void *) &ifr); in tun_detach()
45 int fd, err; in tun_alloc() local
47 fd = open("/dev/net/tun", O_RDWR); in tun_alloc()
48 if (fd < 0) { in tun_alloc()
49 fprintf(stderr, "can't open tun: %s\n", strerror(errno)); in tun_alloc()
50 return fd; in tun_alloc()
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/linux-6.14.4/tools/bpf/bpftool/
Dcommon.c1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
81 /* Probe whether kernel switched from memlock-based (RLIMIT_MEMLOCK) to
82 * memcg-based memory accounting for BPF maps and programs. This was done in
83 * commit 97306be45fbe ("Merge branch 'switch to memcg-based memory
86 * Libbpf also offers to probe for memcg-based accounting vs rlimit, but does
90 * Instead, we can probe by lowering the process-based rlimit to 0, trying to
92 * memcg-based accounting is supported.
96 * that bpftool is single-threaded, this is fine to do here.
158 "mount --make-private %s failed: %s", in mnt_fs()
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Dstruct_ops.c1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
51 t = btf__type_by_id(kern_btf, info->btf_vmlinux_value_type_id); in get_kern_struct_ops_name()
52 st_ops_name = btf__name_by_offset(kern_btf, t->name_off); in get_kern_struct_ops_name()
72 p_err("can't find bpf_map_info from btf_vmlinux"); in get_map_info_type_id()
78 map_info_alloc_len = map_info_type->size; in get_map_info_type_id()
117 * It returns the fd in "*res_fd" and map_info in "*info".
118 * In the very first iteration, info->id should be 0.
119 * An optional map "*name" filter can be specified.
120 * The filter can be made more flexible in the future.
121 * e.g. filter by kernel-struct-ops-name, regex-name, glob-name, ...etc.
[all …]
/linux-6.14.4/drivers/net/can/peak_canfd/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
4 tristate "PEAK-System PCAN-PCIe FD cards"
6 This driver adds support for the PEAK-System PCI Express FD
7 CAN-FD cards family.
8 These 1x or 2x CAN-FD channels cards offer CAN 2.0 a/b as well as
9 CAN-FD access to the CAN bus. Besides the nominal bitrate of up to
10 1 Mbit/s, the data bytes of CAN-FD frames can be transmitted with
11 up to 12 Mbit/s. A galvanic isolation of the CAN ports protects the
13 disturbances of up to 500 Volts. The PCAN-PCI Express FD can be
14 operated with ambient temperatures in a range of -40 to +85 °C.
/linux-6.14.4/Documentation/filesystems/
Dinotify.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Inotify - A Powerful yet Simple File Change Notification System
13 - Deleted obsoleted interface, just refer to manpages for user interface.
18 What is the design decision behind not tying the watch to the open fd of
29 What is the design decision behind using an-fd-per-instance as opposed to
30 an fd-per-watch?
33 An fd-per-watch quickly consumes more file descriptors than are allowed,
34 more fd's than are feasible to manage, and more fd's than are optimally
35 select()-able. Yes, root can bump the per-process fd limit and yes, users
36 can use epoll, but requiring both is a silly and extraneous requirement.
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/linux-6.14.4/include/uapi/linux/
Dcan.h1 /* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
3 * linux/can.h
5 * Definitions for CAN network layer (socket addr / CAN frame / CAN filter)
9 * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
53 /* controller area network (CAN) kernel definitions */
60 /* valid bits in CAN ID for frame formats */
69 * bit 0-28 : CAN identifier (11/29 bit)
83 * bit 0-28 : error class mask (see include/uapi/linux/can/error.h)
84 * bit 29-31 : set to zero
88 /* CAN payload length and DLC definitions according to ISO 11898-1 */
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/linux-6.14.4/Documentation/input/
Duinput.rst10 process can create a virtual input device with specific capabilities. Once
11 this virtual device is created, the process can send events through it,
12 that will be delivered to userspace and in-kernel consumers.
28 create uinput devices and send events. libevdev is less error-prone than
38 ---------------
44 .. code-block:: c
48 void emit(int fd, int type, int code, int val)
59 write(fd, &ie, sizeof(ie));
66 int fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
73 ioctl(fd, UI_SET_EVBIT, EV_KEY);
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/linux-6.14.4/drivers/net/can/usb/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "CAN USB interfaces"
12 tristate "EMS CPC-USB/ARM7 CAN/USB interface"
14 This driver is for the one channel CPC-USB/ARM7 CAN/USB interface
15 from EMS Dr. Thomas Wuensche (http://www.ems-wuensche.de).
18 tristate "esd electronics gmbh CAN/USB interfaces"
20 This driver adds support for several CAN/USB interfaces
24 - esd CAN-USB/2
25 - esd CAN-USB/3-FD
26 - esd CAN-USB/Micro
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/linux-6.14.4/tools/testing/selftests/pci_endpoint/
Dpci_endpoint_test.c1 // SPDX-License-Identifier: GPL-2.0
27 ret = ioctl(self->fd, cmd, arg); \
28 ret = ret < 0 ? -errno : 0; \
31 static const char *test_device = "/dev/pci-endpoint-test.0";
36 int fd; in FIXTURE() local
41 self->fd = open(test_device, O_RDWR); in FIXTURE_SETUP()
43 ASSERT_NE(-1, self->fd) TH_LOG("Can't open PCI Endpoint Test device"); in FIXTURE_SETUP()
48 close(self->fd); in FIXTURE_TEARDOWN()
67 pci_ep_ioctl(PCITEST_BAR, variant->barno); in TEST_F()
68 EXPECT_FALSE(ret) TH_LOG("Test failed for BAR%d", variant->barno); in TEST_F()
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/linux-6.14.4/Documentation/networking/
Dcan.rst2 SocketCAN - Controller Area Network
8 The socketcan package is an implementation of CAN protocols
9 (Controller Area Network) for Linux. CAN is a networking technology
11 automotive fields. While there have been other CAN implementations
13 socket API, the Linux network stack and implements the CAN device
14 drivers as network interfaces. The CAN socket API has been designed
16 familiar with network programming, to easily learn how to use CAN
20 .. _socketcan-motivation:
25 There have been CAN implementations for Linux before SocketCAN so the
27 implementations come as a device driver for some CAN hardware, they
[all …]
Dpacket_mmap.rst1 .. SPDX-License-Identifier: GPL-2.0
17 Howto can be found at:
22 - Ulisses Alonso Camaró <[email protected]>
23 - Johann Baudy
34 configurable circular buffer mapped in user space that can be used to either
37 transmission, multiple packets can be sent through one system call to get the
48 card can also be an advantage.
67 [setup] socket() -------> creation of the capture socket
68 setsockopt() ---> allocation of the circular buffer (ring)
70 mmap() ---------> mapping of the allocated buffer to the
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Dphonet.rst1 .. SPDX-License-Identifier: GPL-2.0
9 ------------
12 and RPC. With the Linux Phonet socket family, Linux host processes can
16 Phonet packets can be exchanged through various hardware connections
19 - USB with the CDC Phonet interface,
20 - infrared,
21 - Bluetooth,
22 - an RS232 serial port (with a dedicated "FBUS" line discipline),
23 - the SSI bus with some TI OMAP processors.
27 --------------
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/linux-6.14.4/drivers/net/can/ctucanfd/
DKconfig2 tristate "CTU CAN-FD IP core" if COMPILE_TEST
4 This driver adds support for the CTU CAN FD open-source IP core.
8 is available (https://gitlab.fel.cvut.cz/canbus/zynq/zynq-can-sja1000-top).
9 Implementation on Intel FPGA-based PCI Express board is available
10 from project (https://gitlab.fel.cvut.cz/canbus/pcie-ctucanfd) and
11 on Intel SoC from project (https://gitlab.fel.cvut.cz/canbus/intel-soc-ctucanfd).
12 Guidepost CTU FEE CAN bus projects page https://canbus.pages.fel.cvut.cz/ .
15 tristate "CTU CAN-FD IP core PCI/PCIe driver"
19 This driver adds PCI/PCIe support for CTU CAN-FD IP core.
22 at https://gitlab.fel.cvut.cz/canbus/pcie-ctucanfd .
[all …]
/linux-6.14.4/tools/spi/
Dspidev_test.c1 // SPDX-License-Identifier: GPL-2.0-only
8 * Cross-compile with cross-gcc -I/path/to/cross-kernel/include
72 while (length-- > 0) { in hex_dump()
92 * Unescape - process hexadecimal escape character
93 * converts shell input "\x23" -> 0x23
119 static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len) in transfer() argument
152 ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); in transfer()
154 pabort("can't send spi message"); in transfer()
177 printf("Usage: %s [-2348CDFHILMNORSZbdilopsvw]\n", prog); in print_usage()
179 " -D --device device to use (default /dev/spidev1.1)\n" in print_usage()
[all …]
/linux-6.14.4/tools/testing/selftests/thermal/intel/workload_hint/
Dworkload_hint_test.c1 // SPDX-License-Identifier: GPL-2.0
29 int fd; in workload_hint_exit() local
33 fd = open(WORKLOAD_ENABLE_ATTRIBUTE, O_RDWR); in workload_hint_exit()
34 if (fd < 0) { in workload_hint_exit()
39 if (write(fd, "0\n", 2) < 0) { in workload_hint_exit()
40 perror("Can' disable workload hints\n"); in workload_hint_exit()
46 close(fd); in workload_hint_exit()
53 int fd, ret, index; in main() local
73 fd = open(WORKLOAD_NOTIFICATION_DELAY_ATTRIBUTE, O_RDWR); in main()
74 if (fd < 0) { in main()
[all …]
/linux-6.14.4/include/linux/can/
Dlength.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2020 Marc Kleine-Budde <[email protected]>
11 #include <linux/can.h>
12 #include <linux/can/netlink.h>
16 * Size of a Classical CAN Standard Frame header in bits
19 * ---------------------------------------------------------
26 * FD Format indicator (FDF) 1
34 * Size of a Classical CAN Extended Frame header in bits
37 * ---------------------------------------------------------
46 * FD Format indicator (FDF) 1
[all …]
/linux-6.14.4/fs/jffs2/
Dbuild.c2 * JFFS2 -- Journalling Flash File System, Version 2.
4 * Copyright © 2001-2007 Red Hat, Inc.
5 * Copyright © 2004-2010 David Woodhouse <[email protected]>
29 for (; *i < c->inocache_hashsize; (*i)++) { in first_inode_chain()
30 if (c->inocache_list[*i]) in first_inode_chain()
31 return c->inocache_list[*i]; in first_inode_chain()
40 if (ic->next) in next_inode()
41 return ic->next; in next_inode()
56 struct jffs2_full_dirent *fd; in jffs2_build_inode_pass1() local
58 dbg_fsbuild("building directory inode #%u\n", ic->ino); in jffs2_build_inode_pass1()
[all …]
/linux-6.14.4/fs/
Dfile.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 1998-1999, Stephen Tweedie and Bill Hawes
7 * Manage the dynamic fd arrays in the process files_struct.
30 * __file_ref_put - Slowpath of file_ref_put()
38 * possible. This signals the caller that it can safely schedule the
53 * This can fail if a concurrent get() operation has in __file_ref_put()
59 if (!atomic_long_try_cmpxchg_release(&ref->refcnt, &cnt, FILE_REF_DEAD)) in __file_ref_put()
63 * The caller can safely schedule the object for in __file_ref_put()
76 atomic_long_set(&ref->refcnt, FILE_REF_DEAD); in __file_ref_put()
86 atomic_long_set(&ref->refcnt, FILE_REF_SATURATED); in __file_ref_put()
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/linux-6.14.4/Documentation/arch/powerpc/
Dvas-api.rst1 .. SPDX-License-Identifier: GPL-2.0
2 .. _VAS-API:
12 allows both userspace and kernel communicate to co-processor
14 unit comprises of one or more hardware engines or co-processor types
20 then requests can be submitted directly without kernel involvement.
21 Requests to the GZIP engine must be formatted as a co-processor Request
30 kernel to setup channel / window which can be used to send compression
38 /dev/crypto/nx-gzip device node implemented by the VAS/NX device driver.
39 An application must open the /dev/crypto/nx-gzip device to obtain a file
40 descriptor (fd). Then should issue VAS_TX_WIN_OPEN ioctl with this fd to
[all …]
/linux-6.14.4/drivers/media/platform/samsung/exynos4-is/
Dfimc-is-errno.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Samsung Exynos4 SoC series FIMC-IS slave interface driver
5 * FIMC-IS error code definition
7 * Copyright (C) 2011 - 2013 Samsung Electronics Co., Ltd.
99 /* FD 900 ~ 999 */
121 /* Index of setfile is not valid (0~MAX_SETFILE_NUM-1) */
123 /* Input path can be changed in ready state(stop) */
125 /* IP can not start if input path is not set */
127 /* Output path can be changed in ready state (stop) */
129 /* IP can not start if output path is not set */
[all …]
/linux-6.14.4/drivers/infiniband/hw/hfi1/
Duser_exp_rcv.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
4 * Copyright(c) 2015-2018 Intel Corporation.
15 struct hfi1_filedata *fd);
17 static int set_rcvarray_entry(struct hfi1_filedata *fd,
29 static int program_rcvarray(struct hfi1_filedata *fd, struct tid_user_buf *,
33 static int unprogram_rcvarray(struct hfi1_filedata *fd, u32 tidinfo);
34 static void __clear_tid_node(struct hfi1_filedata *fd,
36 static void clear_tid_node(struct hfi1_filedata *fd, struct tid_rb_node *node);
50 int hfi1_user_exp_rcv_init(struct hfi1_filedata *fd, in hfi1_user_exp_rcv_init() argument
55 fd->entry_to_rb = kcalloc(uctxt->expected_count, in hfi1_user_exp_rcv_init()
[all …]
/linux-6.14.4/tools/testing/selftests/thermal/intel/power_floor/
Dpower_floor_test.c1 // SPDX-License-Identifier: GPL-2.0
18 int fd; in power_floor_exit() local
22 fd = open(POWER_FLOOR_ENABLE_ATTRIBUTE, O_RDWR); in power_floor_exit()
23 if (fd < 0) { in power_floor_exit()
28 if (write(fd, "0\n", 2) < 0) { in power_floor_exit()
29 perror("Can' disable power floor notifications\n"); in power_floor_exit()
35 close(fd); in power_floor_exit()
42 int fd, ret; in main() local
52 fd = open(POWER_FLOOR_ENABLE_ATTRIBUTE, O_RDWR); in main()
53 if (fd < 0) { in main()
[all …]
/linux-6.14.4/Documentation/networking/device_drivers/can/ctu/
Dctucanfd-driver.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 CTU CAN FD Driver
9 About CTU CAN FD IP Core
10 ------------------------
12 `CTU CAN FD <https://gitlab.fel.cvut.cz/canbus/ctucanfd_ip_core>`_
19 `Vivado integration <https://gitlab.fel.cvut.cz/canbus/zynq/zynq-can-sja1000-top>`_
20 and Intel Cyclone V 5CSEMA4U23C6 based DE0-Nano-SoC Terasic board
21 `QSys integration <https://gitlab.fel.cvut.cz/canbus/intel-soc-ctucanfd>`_
23 `PCIe integration <https://gitlab.fel.cvut.cz/canbus/pcie-ctucanfd>`_ of the core.
30 The basic functional model of the CTU CAN FD peripheral has been
[all …]
/linux-6.14.4/Documentation/dev-tools/
Dkcov.rst5 for coverage-guided fuzzing. Coverage data of a running kernel is exported via
7 thus KCOV can capture precise coverage of a single system call.
13 inherently non-deterministic parts of the kernel (e.g. scheduler, locking).
15 Besides collecting code coverage, KCOV can also collect comparison operands.
18 Besides collecting coverage data from syscall handlers, KCOV can also collect
24 -------------
41 mount -t debugfs none /sys/kernel/debug
44 -------------------
49 .. code-block:: c
73 int fd;
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