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io_uring/zcrx: introduce IORING_REGISTER_ZCRX_CTRL

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It'll be annoying and take enough of boilerplate code to implement
new zcrx features as separate io_uring register opcode. Introduce
IORING_REGISTER_ZCRX_CTRL that will multiplex such calls to zcrx.
Note, there are no real users of the opcode in this patch.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov
2025-11-13 10:46:12 +00:00
committed by Jens Axboe
parent 1b8b5d0316
commit d663976dad
4 changed files with 43 additions and 0 deletions
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13
include/uapi/linux/io_uring.h
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@@ -697,6 +697,9 @@ enum io_uring_register_op {
/* query various aspects of io_uring, see linux/io_uring/query.h */
IORING_REGISTER_QUERY = 35,
/* auxiliary zcrx configuration, see enum zcrx_ctrl_op */
IORING_REGISTER_ZCRX_CTRL = 36,
/* this goes last */
IORING_REGISTER_LAST,
@@ -1078,6 +1081,16 @@ struct io_uring_zcrx_ifq_reg {
__u64 __resv[3];
};
enum zcrx_ctrl_op {
__ZCRX_CTRL_LAST,
};
struct zcrx_ctrl {
__u32 zcrx_id;
__u32 op; /* see enum zcrx_ctrl_op */
__u64 __resv[8];
};
#ifdef __cplusplus
}
#endif