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io_uring: add mshot helper for posting CQE32

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Add a helper for posting 32 byte CQEs in a multishot mode and add a cmd
helper on top. As it specifically works with requests, the helper ignore
the passed in cqe->user_data and sets it to the one stored in the
request.

The command helper is only valid with multishot requests.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/c29d7720c16e1f981cfaa903df187138baa3946b.1750065793.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov
2025-06-16 10:46:28 +01:00
committed by Jens Axboe
parent b955754959
commit ac479eac22
4 changed files with 56 additions and 0 deletions
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4
io_uring/uring_cmd.h
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@@ -17,6 +17,10 @@ void io_uring_cmd_cleanup(struct io_kiocb *req);
bool io_uring_try_cancel_uring_cmd(struct io_ring_ctx *ctx,
struct io_uring_task *tctx, bool cancel_all);
bool io_uring_cmd_post_mshot_cqe32(struct io_uring_cmd *cmd,
unsigned int issue_flags,
struct io_uring_cqe cqe[2]);
void io_cmd_cache_free(const void *entry);
int io_cmd_poll_multishot(struct io_uring_cmd *cmd,