1KCAPI_SET_MAXSPLICES(3) Programming Interface KCAPI_SET_MAXSPLICES(3)
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6 kcapi_set_maxsplicesize - Set maximum buffer size for splice
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9 int kcapi_set_maxsplicesize(struct kcapi_handle * handle,
10 unsigned int size);
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13 handle
14 [in] cipher handle allocated by caller.
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16 size
17 [in] New maximum buffer size in bytes
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20 When using vmsplice/splice to avoid copying of data into the kernel,
21 the kernel enforces a maximum number of bytes which can be spliced. If
22 larger data is to be processed, sendmsg will be used.
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24 Using this call, the buffer size can be increased.
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27 Splice uses a pipe pair. Therefore, the maximum number of bytes that
28 can be stored with the pipe governs the maximum data size to be
29 spliced. Increasing the pipe buffer size is only allowed up to the
30 maximum specified with /proc/sys/fs/pipe-max-size.
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32 return 0 upon success; a negative errno-style error code if an error
33 occurred
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36 Stephan Mueller <smueller@chronox.de>
37 Author.
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40libkcapi Manual 1.4.0 August 2022 KCAPI_SET_MAXSPLICES(3)