io_uring/zcrx: improve area validation

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dmabuf backed area will be taking an offset instead of addresses, and
io_buffer_validate() is not flexible enough to facilitate it. It also
takes an iovec, which may truncate the u64 length zcrx takes. Add a new
helper function for validation.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0b3b735391a0a8f8971bf0121c19765131fddd3b.1746097431.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2025-05-01 13:17:14 +01:00 • committed by Jens Axboe

parent 91db6edc57

commit d760d3f59f

3 changed files with 19 additions and 17 deletions

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27

io_uring/rsrc.c

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2

io_uring/rsrc.h

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7

io_uring/zcrx.c

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