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* iov: Improve documentation of iov_skip_bytes()David Gibson2024-03-071-1/+1
| | | | | | | | | As pointed out in review, the documentation comments for iov_skip_bytes() are more confusing than they should be. Reword them, including updating parameter names, to make it clearer. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* iov: Add helper to find skip over first n bytes of an io vectorDavid Gibson2024-02-291-0/+2
| | | | | | | | | Several of the IOV functions in iov.c, and also tap_send_frames_passt() needs to determine which buffer element a byte offset into an IO vector lies in. Split this out into a helper function iov_skip_bytes(). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* iov: add some functions to manage iovecLaurent Vivier2024-02-291-0/+29
Introduce functions to copy to/from a buffer from/to an iovec array, to compute data length in in bytes of an iovec and to copy memory from an iovec to another. iov_from_buf(), iov_to_buf(), iov_size(), iov_copy(). Signed-off-by: Laurent Vivier <lvivier@redhat.com> Message-ID: <20240217150725.661467-2-lvivier@redhat.com> [dwg: Small changes to suppress cppcheck warnings] Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>