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/Documentation/driver-api/early-userspace/
Dbuffer-format.rst29 ALGN(n) means padding with null bytes to an n-byte boundary
44 formats); arbitrary amounts zero bytes (for padding) can be added
58 c_magic 6 bytes The string "070701" or "070702"
59 c_ino 8 bytes File inode number
60 c_mode 8 bytes File mode and permissions
61 c_uid 8 bytes File uid
62 c_gid 8 bytes File gid
63 c_nlink 8 bytes Number of links
64 c_mtime 8 bytes Modification time
65 c_filesize 8 bytes Size of data field
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/Documentation/networking/
Dudplite.txt64 sets the checksum coverage length to 20 bytes (12b data + 8b header).
65 Of each packet only the first 20 bytes (plus the pseudo-header) will be
172 Payload: 1536 bytes Send Buffer: 1024 bytes
173 MTU: 1500 bytes Coverage Length: 856 bytes
175 UDP-Lite will ship the 1536 bytes in two separate packets:
177 Packet 1: 1024 payload + 8 byte header + 20 byte IP header = 1052 bytes
178 Packet 2: 512 payload + 8 byte header + 20 byte IP header = 540 bytes
180 The coverage packet covers the UDP-Lite header and 848 bytes of the
189 Payload: 1024 bytes Send buffer size: 1024 bytes
190 MTU: 300 bytes Coverage length: 575 bytes
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/Documentation/ABI/testing/
Ddebugfs-wilco-ec21 bytes will be sent to the EC. Then, you can read the bytes of
24 For writing, bytes 0-1 indicate the message type, one of enum
26 request, starting at MBOX[0]. At least three bytes are required
41 Note that the first 16 bytes of the received MBOX[] will be
42 printed, even if some of the data is junk, and skipping bytes
43 17 to 32. It is up to you to know how many of the first bytes of
Dsysfs-class-bsr8 register in bytes.
16 (RO) The length of memory region that can be mapped in bytes.
24 (RO) The stride or the interval at which the allocated BSR bytes
Ddebugfs-pfo-nx-crypto29 - The total number of bytes encrypted using AES in any of the driver's
36 - The total number of bytes hashed by the hardware using SHA-256.
42 - The total number of bytes hashed by the hardware using SHA-512.
Dconfigfs-usb-gadget-uac29 c_ssize - capture sample size (bytes)
12 p_ssize - playback sample size (bytes)
Dsysfs-block52 Number of bytes of integrity tag space available per
53 512 bytes of data.
67 Describes the number of data bytes which are protected
87 indicates how many bytes the beginning of the device is
98 indicates how many bytes the beginning of the partition
106 address. It is typically 512 bytes.
168 parameter indicates how many bytes the beginning of the
179 parameter indicates how many bytes the beginning of the
191 unit in bytes if reported by the device. Otherwise the
201 internal limits on the number of bytes that can be
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Dconfigfs-usb-gadget-uac19 c_ssize - capture sample size (bytes)
12 p_ssize - playback sample size (bytes)
/Documentation/PCI/endpoint/
Dpci-test-howto.rst215 READ ( 1 bytes): OKAY
216 READ ( 1024 bytes): OKAY
217 READ ( 1025 bytes): OKAY
218 READ (1024000 bytes): OKAY
219 READ (1024001 bytes): OKAY
223 WRITE ( 1 bytes): OKAY
224 WRITE ( 1024 bytes): OKAY
225 WRITE ( 1025 bytes): OKAY
226 WRITE (1024000 bytes): OKAY
227 WRITE (1024001 bytes): OKAY
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/Documentation/devicetree/bindings/reserved-memory/
Dramoops.txt30 - ecc-size: enables ECC support and specifies ECC buffer size in bytes
33 - record-size: maximum size in bytes of each dump done on oops/panic
36 - console-size: size in bytes of log buffer reserved for kernel messages
39 - ftrace-size: size in bytes of log buffer reserved for function tracing and
42 - pmsg-size: size in bytes of log buffer reserved for userspace messages
/Documentation/filesystems/
Dromfs.txt11 defunct) filesystems, compiled as module need more than 20000 bytes,
12 while romfs is less than a page, about 4000 bytes (assuming i586
48 is 32 bytes (this is an empty file, with a less than 16 character
51 bytes. This is quite rare however, since most file names are longer
52 than 3 bytes, and shorter than 15 bytes.
60 +---+---+---+---+ The ASCII representation of those bytes
63 8 | full size | The number of accessible bytes in this fs.
65 12 | checksum | The checksum of the FIRST 512 BYTES.
76 The first eight bytes identify the filesystem, even for the casual
78 bytes accessible from the start of this filesystem. The 4th longword
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Derofs.txt28 Inode metadata size: 32 bytes 64 bytes
33 Metadata reserved: 4 bytes 14 bytes
88 value (32 bytes) and designed to be kept in line with v1 inode size.
109 |-> 12 bytes <-|->x * 4 bytes<-| .
119 Inode could be 32 or 64 bytes, which can be distinguished from a common
127 |__________________| 32 bytes | |
129 |__________________| 64 bytes
151 |-> aligned by 4 bytes
152 + xattr_blkaddr blocks |-> aligned with 4 bytes
/Documentation/w1/slaves/
Dw1_ds2423.rst26 Each lines will contain the values of 42 bytes read from the counter and
32 Meaning of 42 bytes represented is following:
35 - 4 bytes for the counter value
36 - 4 zero bytes
37 - 2 bytes for crc16 which was calculated from the data read since the previous crc bytes
38 - 31 remaining bytes from the ram page
/Documentation/ABI/obsolete/
Dsysfs-driver-hid-roccat-ryos5 profile will be read next. The data has to be 3 bytes long.
17 The data has to be 3 bytes long.
26 The data has to be 125 bytes long.
36 in written data. The data has to be 95 bytes long.
46 written data. The data has to be 35 bytes long.
56 in written data. The data has to be 23 bytes long.
66 is included in written data. The data has to be 8 bytes long.
76 in written data. The data has to be 294 bytes long.
87 written data. The data has to be 6 bytes long.
98 The data has to be 16 bytes long.
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Dsysfs-driver-hid-roccat-isku16 The data is 6 bytes long.
26 written data. The data has to be 6 bytes long.
36 in written data. The data has to be 6 bytes long.
46 in written data. The data has to be 65 bytes long.
56 in written data. The data has to be 41 bytes long.
66 written data. The data has to be 35 bytes long.
76 written data. The data has to be 29 bytes long.
86 in written data. The data has to be 23 bytes long.
96 The data has to be 20 bytes long.
104 The data has to be 10 bytes long for Isku, IskuFX needs 16 bytes
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Dsysfs-driver-hid-roccat-konepure9 The data has to be 3 bytes long.
17 profile will be read next. The data has to be 3 bytes long.
26 The data is 6 bytes long.
36 included in written data. The data has to be 2082 bytes long.
47 buttons back to the mouse. The data has to be 59 bytes long.
63 settings back to the mouse. The data has to be 31 bytes long.
76 set. The data has to be 6 bytes long.
84 The data has to be 16 bytes long.
94 The data has to be 4 bytes long.
103 The returned data is 1028 bytes in size.
Dsysfs-driver-hid-roccat-savu9 47 bytes long.
21 profile will be read next. The data has to be 3 bytes long.
33 settings back to the mouse. The data has to be 43 bytes long.
45 The data is 8 bytes long.
54 The data has to be 2083 bytes long.
67 The data has to be 3 bytes long.
76 The data has to be 4 bytes long.
/Documentation/media/uapi/v4l/
Dpixfmt-v4l2.rst65 - Distance in bytes between the leftmost pixels in two adjacent
70 padding bytes at the end of each line. Drivers however may ignore
72 bytes per pixel or a larger value required by the hardware. That
76 Video hardware may access padding bytes, therefore they must
77 reside in accessible memory. Consider cases where padding bytes
79 Input devices may write padding bytes, the value is undefined.
80 Output devices ignore the contents of padding bytes.
85 planes of a YUV 4:2:0 image have half as many padding bytes
94 - Size in bytes of the buffer to hold a complete image, set by the
97 number of bytes required by the codec to support the worst-case
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/Documentation/admin-guide/device-mapper/
Ddm-crypt.rst66 The encryption key size in bytes. The kernel key payload size must match
124 integrity:<bytes>:<type>
125 The device requires additional <bytes> metadata per-sector stored
136 sector_size:<bytes>
137 Use <bytes> as the encryption unit instead of 512 bytes sectors.
138 This option can be in range 512 - 4096 bytes and must be power of two.
143 instead of default 512 bytes sectors.
145 For example, if <sector_size> is 4096 bytes, plain64 IV for the second
147 The <iv_offset> must be multiple of <sector_size> (in 512 bytes units)
/Documentation/
Dlzo.txt27 - a length (number of bytes to copy from dictionary)
35 The first byte of the block follows a different encoding from other bytes, it
41 length, up to 255 may be added in increments by consuming more bytes with a
48 length += 255*(number of zero bytes)
56 Certain encodings involve one extra byte, others involve two extra bytes
70 for the distance, thus requiring 3 bytes.
75 are called under the assumption that a certain number of bytes follow
77 They just have to "refill" this credit if they consume extra bytes. This
106 stream length is at least 5 bytes (length of shortest possible
136 bytes to encode a copy of 2 other bytes but it encodes the number of
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/Documentation/devicetree/bindings/dma/
Dqcom_hidma_mgmt.txt14 instance can use like maximum read/write request and number of bytes to
21 - max-write-burst-bytes: Maximum write burst in bytes that HIDMA can
26 - max-read-burst-bytes: Maximum read burst in bytes that HIDMA can
70 max-write-burst-bytes = <1024>;
71 max-read-burst-bytes = <1024>;
/Documentation/filesystems/ext4/
Dinlinedata.rst9 file is smaller than 60 bytes, then the data are stored inline in
18 inline data, one ought to be able to store 160 bytes of data in a
20 that, the limit was 156 bytes due to inefficient use of inode space.
28 The first four bytes of i\_block are the inode number of the parent
/Documentation/i2c/busses/
Di2c-mlxcpld.rst45 Number of data bytes to write in read transaction
47 Number of address bytes to write in read transaction.
51 DATAx 0xa - 0x54 - 68 bytes data buffer regs.
52 For write transaction address is specified in four first bytes
55 specified in the four first bytes (DATA0 - DATA3). Data is read
/Documentation/sparc/oradax/
Ddax-hv-api.txt123 …CCBs are either 64 or 128 bytes long, depending on the operation type. The exact contents of the C…
203 … Long CCB flag indicates whether the submitted CCB is 64 or 128 bytes long; value is 0 for 64 bytes
204 and 1 for 128 bytes.
231 …The input of the target CCB must start within 64 bytes of the output of the source CCB or the pipe…
256 0x0 Fixed width byte packed Up to 16 bytes
262 … 0x4 Fixed width byte packed with run Up to 16 bytes; data stream of run lengths must be
268 … 0x8 Fixed width byte packed with Up to 16 bytes before the encoding; compressed stream
276 … 0xA Variable width byte packed with Up to 16 bytes before the encoding; compressed stream
288 …0xC Fixed width byte packed with Up to 16 bytes before the encoding; compressed str…
299 If OZIP encoding is used, there must be no reserved bytes in the table.
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/Documentation/driver-api/
Dmtdnand.rst365 Hardware ECC generator providing 3 bytes ECC per 256 byte.
369 Hardware ECC generator providing 3 bytes ECC per 512 byte.
373 Hardware ECC generator providing 6 bytes ECC per 512 byte.
377 Hardware ECC generator providing 8 bytes ECC per 512 byte.
415 The ECC bytes must be placed immediately after the data bytes in order
419 remaining free bytes in the oob area are managed by the autoplacement
576 is stored in 4 consecutive bytes in the spare area of the device. The
639 The eccbytes member defines the number of ecc bytes per page.
651 length in bytes. More than one area can be defined. The list is
679 Automatic placement uses the built in defaults to place the ecc bytes in
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