| /linux-6.14.4/Documentation/networking/ |
| D | af_xdp.rst | 1 .. SPDX-License-Identifier: GPL-2.0
20 XDP programs to redirect frames to a memory buffer in a user-space
23 An AF_XDP socket (XSK) is created with the normal socket()
25 TX ring. A socket can receive packets on the RX ring and it can send
28 to have at least one of these rings for each socket. An RX or TX
53 The socket is then finally bound with a bind() call to a device and a
61 with as well as its own newly created XSK socket. The new process will
64 single-consumer / single-producer (for performance reasons), the new
65 process has to create its own socket with associated RX and TX rings,
72 user-space application can place an XSK at an arbitrary place in this
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| D | iso15765-2.rst | 1 .. SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
4 ISO 15765-2 (ISO-TP)
10 ISO 15765-2, also known as ISO-TP, is a transport protocol specifically defined
12 industry, for example as the transport protocol for UDSonCAN (ISO 14229-3) or
13 emission-related diagnostic services (ISO 15031-5).
15 ISO-TP can be used both on CAN CC (aka Classical CAN) and CAN FD (CAN with
21 -------------------
23 * ISO 15765-2:2024 : Road vehicles - Diagnostic communication over Controller
27 ----------
29 In its simplest form, ISO-TP is based on two kinds of addressing modes for the
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| D | multi-pf-netdev.rst | 1 .. SPDX-License-Identifier: GPL-2.0
5 Multi-PF Netdev
11 - `Background`_
12 - `Overview`_
13 - `mlx5 implementation`_
14 - `Channels distribution`_
15 - `Observability`_
16 - `Steering`_
17 - `Mutually exclusive features`_
22 The Multi-PF NIC technology enables several CPUs within a multi-socket server to connect directly to
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| D | can.rst | 2 SocketCAN - Controller Area Network
13 socket API, the Linux network stack and implements the CAN device
14 drivers as network interfaces. The CAN socket API has been designed
20 .. _socketcan-motivation:
22 Motivation / Why Using the Socket API
29 functionality. Usually, there is only a hardware-specific device
32 Queueing of frames and higher-level transport protocols like ISO-TP
34 character-device implementations support only one single process to
41 protocol family has been implemented which provides a socket interface
47 protocol family module and also vice-versa. Also, the protocol family
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| D | scaling.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 multi-processor systems.
17 - RSS: Receive Side Scaling
18 - RPS: Receive Packet Steering
19 - RFS: Receive Flow Steering
20 - Accelerated Receive Flow Steering
21 - XPS: Transmit Packet Steering
28 (multi-queue). On reception, a NIC can send different packets to different
33 generally known as “Receive-side Scaling” (RSS). The goal of RSS and
35 Multi-queue distribution can also be used for traffic prioritization, but
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| /linux-6.14.4/tools/bpf/bpftool/Documentation/ |
| D | bpftool-cgroup.rst | 1 .. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 bpftool-cgroup
6 -------------------------------------------------------------------------------
8 -------------------------------------------------------------------------------
19 *OPTIONS* := { |COMMON_OPTIONS| | { **-f** | **--bpffs** } }
48 | *ATTACH_FLAGS* := { **multi** | **override** }
78 *ATTACH_FLAGS* can be one of: **override** if a sub-cgroup installs some
79 bpf program, the program in this cgroup yields to sub-cgroup program;
80 **multi** if a sub-cgroup installs some bpf program, that cgroup program
87 Multiple programs are allowed to be attached to a cgroup with **multi**.
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| /linux-6.14.4/tools/testing/selftests/bpf/prog_tests/ |
| D | sk_lookup.c | 1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
4 * Test BPF attach point for INET socket lookup (BPF_SK_LOOKUP).
7 * - attaching/detaching/querying programs to BPF_SK_LOOKUP hook,
8 * - redirecting socket lookup to a socket selected by BPF program,
9 * - failing a socket lookup on BPF program's request,
10 * - error scenarios for selecting a socket from BPF program,
11 * - accessing BPF program context,
12 * - attaching and running multiple BPF programs.
74 bool reuseport_has_conns; /* Add a connected socket to reuseport group */
96 errno = -prog_fd; in attach_reuseport()
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| /linux-6.14.4/drivers/tty/serial/8250/ |
| D | serial_cs.c | 1 // SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
69 /* Table of multi-port card ID's */
74 int multi; /* 1 = multifunction, > 1 = # ports */ member
84 int multi; member
94 * vers_1 5.0, "Brain Boxes", "2-Port RS232 card", "r6"
104 uart->port.uartclk = 14745600; in quirk_setup_brainboxes_0104()
122 return -ENODEV; in quirk_post_ibm()
127 * be handled by setting the quirk entry .multi = 0 | 1 ?
131 struct serial_info *info = link->priv; in quirk_config_nokia()
133 if (info->multi > 1) in quirk_config_nokia()
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| /linux-6.14.4/Documentation/driver-api/media/drivers/ |
| D | tuners.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 ------------------------
12 - L= LG_API (VHF_LO=0x01, VHF_HI=0x02, UHF=0x08, radio=0x04)
13 - P= PHILIPS_API (VHF_LO=0xA0, VHF_HI=0x90, UHF=0x30, radio=0x04)
14 - T= TEMIC_API (VHF_LO=0x02, VHF_HI=0x04, UHF=0x01)
15 - A= ALPS_API (VHF_LO=0x14, VHF_HI=0x12, UHF=0x11)
16 - M= PHILIPS_MK3 (VHF_LO=0x01, VHF_HI=0x02, UHF=0x04, radio=0x19)
19 -------------------
21 - Samsung Tuner identification: (e.g. TCPM9091PD27)
23 .. code-block:: none
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| /linux-6.14.4/Documentation/security/ |
| D | SCTP.rst | 1 .. SPDX-License-Identifier: GPL-2.0
11 --------------
26 Passes the ``@asoc`` and ``@chunk->skb`` of the association INIT packet to the
30 @asoc - pointer to sctp association structure.
31 @skb - pointer to skbuff of association packet.
42 @sk - Pointer to sock structure.
43 @optname - Name of the option to validate.
44 @address - One or more ipv4 / ipv6 addresses.
45 @addrlen - The total length of address(s). This is calculated on each
49 ------------------------------------------------------------------
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| /linux-6.14.4/Documentation/devicetree/bindings/cpu/ |
| D | cpu-topology.txt | 6 1 - Introduction
12 - socket
13 - cluster
14 - core
15 - thread
18 symmetric multi-threading (SMT) is supported or not.
29 Currently, only ARM/RISC-V intend to use this cpu topology binding but it may be
39 2 - cpu-map node
42 The ARM/RISC-V CPU topology is defined within the cpu-map node, which is a direct
46 - cpu-map node
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| /linux-6.14.4/tools/perf/pmu-events/arch/x86/emeraldrapids/ |
| D | uncore-memory.json | 3 "BriefDescription": "Cycles - at UCLK",
228 "BriefDescription": "Multi-socket cacheline Directory lookups (any state found)",
238 "BriefDescription": "Multi-socket cacheline Directory lookups (cacheline found in A state)",
248 "BriefDescription": "Multi-socket cacheline Directory lookup (cacheline found in I state)",
258 "BriefDescription": "Multi-socket cacheline Directory lookup (cacheline found in S state)",
348 "BriefDescription": "Multi-socket cacheline Directory update from A to I",
358 "BriefDescription": "Multi-socket cacheline Directory update from A to S",
368 "BriefDescription": "Multi-socket cacheline Directory update from/to Any state",
377 "BriefDescription": "Multi-socket cacheline Directory Updates",
390 "BriefDescription": "Multi-socket cacheline Directory Updates",
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| D | uncore-interconnect.json | 31 "BriefDescription": "FAF - request insert from TC.",
47 "BriefDescription": "FAF allocation -- sent to ADQ",
84 … "BriefDescription": "Counts Timeouts - Set 0 : Cache Inserts of Atomic Transactions as Secondary",
94 … "BriefDescription": "Counts Timeouts - Set 0 : Cache Inserts of Read Transactions as Secondary",
104 … "BriefDescription": "Counts Timeouts - Set 0 : Cache Inserts of Write Transactions as Secondary",
114 "BriefDescription": "Counts Timeouts - Set 0 : Fastpath Rejects",
124 "BriefDescription": "Counts Timeouts - Set 0 : Fastpath Requests",
134 … "BriefDescription": "Counts Timeouts - Set 0 : Fastpath Transfers From Primary to Secondary",
144 … "BriefDescription": "Counts Timeouts - Set 0 : Prefetch Ack Hints From Primary to Secondary",
154 "BriefDescription": "Counts Timeouts - Set 0 : Slow path fwpf didn't find prefetch",
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| /linux-6.14.4/tools/perf/pmu-events/arch/x86/sapphirerapids/ |
| D | uncore-memory.json | 3 "BriefDescription": "Cycles - at UCLK",
228 "BriefDescription": "Multi-socket cacheline Directory lookups (any state found)",
238 "BriefDescription": "Multi-socket cacheline Directory lookups (cacheline found in A state)",
248 "BriefDescription": "Multi-socket cacheline Directory lookup (cacheline found in I state)",
258 "BriefDescription": "Multi-socket cacheline Directory lookup (cacheline found in S state)",
348 "BriefDescription": "Multi-socket cacheline Directory update from A to I",
358 "BriefDescription": "Multi-socket cacheline Directory update from A to S",
368 "BriefDescription": "Multi-socket cacheline Directory update from/to Any state",
377 "BriefDescription": "Multi-socket cacheline Directory Updates",
390 "BriefDescription": "Multi-socket cacheline Directory Updates",
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| D | uncore-interconnect.json | 31 "BriefDescription": "FAF - request insert from TC.",
47 "BriefDescription": "FAF allocation -- sent to ADQ",
84 … "BriefDescription": "Counts Timeouts - Set 0 : Cache Inserts of Atomic Transactions as Secondary",
94 … "BriefDescription": "Counts Timeouts - Set 0 : Cache Inserts of Read Transactions as Secondary",
104 … "BriefDescription": "Counts Timeouts - Set 0 : Cache Inserts of Write Transactions as Secondary",
114 "BriefDescription": "Counts Timeouts - Set 0 : Fastpath Rejects",
124 "BriefDescription": "Counts Timeouts - Set 0 : Fastpath Requests",
134 … "BriefDescription": "Counts Timeouts - Set 0 : Fastpath Transfers From Primary to Secondary",
144 … "BriefDescription": "Counts Timeouts - Set 0 : Prefetch Ack Hints From Primary to Secondary",
154 "BriefDescription": "Counts Timeouts - Set 0 : Slow path fwpf didn't find prefetch",
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| /linux-6.14.4/drivers/isdn/mISDN/ |
| D | Makefile | 1 # SPDX-License-Identifier: GPL-2.0
6 obj-$(CONFIG_MISDN) += mISDN_core.o
7 obj-$(CONFIG_MISDN_DSP) += mISDN_dsp.o
8 obj-$(CONFIG_MISDN_L1OIP) += l1oip.o
10 # multi objects
12 mISDN_core-objs := core.o fsm.o socket.o clock.o hwchannel.o stack.o layer1.o layer2.o tei.o timerd…
13 mISDN_dsp-objs := dsp_core.o dsp_cmx.o dsp_tones.o dsp_dtmf.o dsp_audio.o dsp_blowfish.o dsp_pipeli…
14 l1oip-objs := l1oip_core.o l1oip_codec.o
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| D | l1oip_core.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
15 Value 3 = BRI (multi channel frame, not supported yet)
16 Value 4 = PRI (multi channel frame, not supported yet)
17 A multi channel frame reduces overhead to a single frame for all
18 b-channels, but increases delay.
19 (NOTE: Multi channel frames are not implemented yet.)
28 0 = we use a-Law (default)
29 1 = we use u-Law
32 limitation of B-channels to control bandwidth (1...126)
34 PRI: 1-30, 31-126 (126, because dchannel ist not counted here)
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| /linux-6.14.4/drivers/pcmcia/ |
| D | ds.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * ds.c -- 16-bit PCMCIA core support
10 * (C) 2003 - 2010 Dominik Brodowski
23 #include <linux/dma-mapping.h>
45 const struct pcmcia_device_id *did = p_drv->id_table; in pcmcia_check_driver()
49 if (!p_drv->probe || !p_drv->remove) in pcmcia_check_driver()
51 "function\n", p_drv->name); in pcmcia_check_driver()
53 while (did && did->match_flags) { in pcmcia_check_driver()
55 if (!did->prod_id[i]) in pcmcia_check_driver()
58 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); in pcmcia_check_driver()
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| /linux-6.14.4/tools/usb/ |
| D | p9_fwd.py | 2 # SPDX-License-Identifier: GPL-2.0
7 import socket
23 return f"{dev.bus}-{dev_path}"
69 # we have to detach the usb-storage driver from multi gadget since
99 # create and connect socket
100 self.s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
124 data += self.ep_in.read(size - len(data))
138 data += self.s.recv(size - len(data))
158 if (time.monotonic() - self.stats_logged) < interval:
167 with open(f"/sys/bus/usb/devices/{dev.bus}-{dev.address}/{name}") as f:
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| /linux-6.14.4/Documentation/arch/x86/ |
| D | topology.rst | 1 .. SPDX-License-Identifier: GPL-2.0
11 The architecture-agnostic topology definitions are in
12 Documentation/admin-guide/cputopology.rst. This file holds x86-specific
17 Needless to say, code should use the generic functions - this file is *only*
27 socket has no relevance to software. It's an electromechanical component. In
28 the past a socket always contained a single package (see below), but with the
29 advent of Multi Chip Modules (MCM) a socket can hold more than one package. So
35 - packages
36 - cores
37 - threads
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| /linux-6.14.4/arch/um/drivers/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
14 The User-Mode Linux environment allows you to create virtual serial
18 See <http://user-mode-linux.sourceforge.net/old/input.html> for more
44 lines to host pseudo-terminals. Access to both traditional
45 pseudo-terminals (/dev/pty*) and pts pseudo-terminals are controlled
55 (/dev/tty*) and the slave side of pseudo-terminals (/dev/ttyp* and
107 traditional pseudo-terminals.
131 While the User-Mode port cannot directly talk to any physical
139 <http://user-mode-linux.sourceforge.net/old/networking.html>.
141 If you'd like to be able to enable networking in the User-Mode
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| /linux-6.14.4/fs/quota/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
15 an unclean shutdown. For further details, read the Quota mini-HOWTO,
18 support is only useful for multi user systems. If unsure, say N.
36 future. Please use notification via netlink socket instead.
64 formats. Both these formats support 32-bit UIDs/GIDs and vfsv1 format
65 also supports 64-bit inode and block quota limits. If you need this
|
| /linux-6.14.4/include/uapi/linux/ |
| D | psp-dbc.h | 1 /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
24 * struct dbc_user_nonce - Nonce exchange structure (input/output).
27 * 1: authentication: PSP will return multi-use nonce.
39 * struct dbc_user_setuid - UID exchange structure (input).
49 * struct dbc_user_param - Parameter exchange structure (input/output).
53 * - When sending a message this is to be created by software
55 * - For interpreting results, this signature is updated by the
70 * -EINVAL: invalid input
71 * -E2BIG: excess data passed
72 * -EFAULT: failed to copy to/from userspace
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| D | if_xdp.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * if_xdp: XDP socket user-space interface
17 #define XDP_COPY (1 << 1) /* Force copy-mode */
18 #define XDP_ZEROCOPY (1 << 2) /* Force zero-copy mode */
30 * multi-buffer XDP frames into multiple Rx descriptors. Without this set
44 /* Request to reserve tx_metadata_len bytes of per-chunk metadata.
73 /* XDP socket options */
117 ((1ULL << XSK_UNALIGNED_BUF_OFFSET_SHIFT) - 1)
131 * transmission at a pre-determined time called launch time. The value of
147 /* Offset from desc->addr where checksumming should start. */
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| /linux-6.14.4/tools/include/uapi/linux/ |
| D | if_xdp.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * if_xdp: XDP socket user-space interface
17 #define XDP_COPY (1 << 1) /* Force copy-mode */
18 #define XDP_ZEROCOPY (1 << 2) /* Force zero-copy mode */
30 * multi-buffer XDP frames into multiple Rx descriptors. Without this set
44 /* Request to reserve tx_metadata_len bytes of per-chunk metadata.
73 /* XDP socket options */
117 ((1ULL << XSK_UNALIGNED_BUF_OFFSET_SHIFT) - 1)
131 * transmission at a pre-determined time called launch time. The value of
147 /* Offset from desc->addr where checksumming should start. */
|