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io_uring: add CQE32 setup processing

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This adds two new function to setup and fill the CQE32 result structure.

Signed-off-by: Stefan Roesch <shr@fb.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Link: https://lore.kernel.org/r/20220426182134.136504-5-shr@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Stefan Roesch 2022-04-26 11:21:26 -07:00 committed by Jens Axboe
parent baf9cb643b
commit 916587984f
1 changed files with 58 additions and 0 deletions
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58
fs/io_uring.c
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@ -2335,12 +2335,70 @@ static inline bool __io_fill_cqe_req_filled(struct io_ring_ctx *ctx,
req->cqe.res, req->cqe.flags);
}
static inline bool __io_fill_cqe32_req_filled(struct io_ring_ctx *ctx,
struct io_kiocb *req)
{
struct io_uring_cqe *cqe;
u64 extra1 = req->extra1;
u64 extra2 = req->extra2;
trace_io_uring_complete(req->ctx, req, req->cqe.user_data,
req->cqe.res, req->cqe.flags);
/*
* If we can't get a cq entry, userspace overflowed the
* submission (by quite a lot). Increment the overflow count in
* the ring.
*/
cqe = io_get_cqe(ctx);
if (likely(cqe)) {
memcpy(cqe, &req->cqe, sizeof(struct io_uring_cqe));
cqe->big_cqe[0] = extra1;
cqe->big_cqe[1] = extra2;
return true;
}
return io_cqring_event_overflow(ctx, req->cqe.user_data,
req->cqe.res, req->cqe.flags);
}
static inline bool __io_fill_cqe_req(struct io_kiocb *req, s32 res, u32 cflags)
{
trace_io_uring_complete(req->ctx, req, req->cqe.user_data, res, cflags);
return __io_fill_cqe(req->ctx, req->cqe.user_data, res, cflags);
}
static inline void __io_fill_cqe32_req(struct io_kiocb *req, s32 res, u32 cflags,
u64 extra1, u64 extra2)
{
struct io_ring_ctx *ctx = req->ctx;
struct io_uring_cqe *cqe;
if (WARN_ON_ONCE(!(ctx->flags & IORING_SETUP_CQE32)))
return;
if (req->flags & REQ_F_CQE_SKIP)
return;
trace_io_uring_complete(ctx, req, req->cqe.user_data, res, cflags);
/*
* If we can't get a cq entry, userspace overflowed the
* submission (by quite a lot). Increment the overflow count in
* the ring.
*/
cqe = io_get_cqe(ctx);
if (likely(cqe)) {
WRITE_ONCE(cqe->user_data, req->cqe.user_data);
WRITE_ONCE(cqe->res, res);
WRITE_ONCE(cqe->flags, cflags);
WRITE_ONCE(cqe->big_cqe[0], extra1);
WRITE_ONCE(cqe->big_cqe[1], extra2);
return;
}
io_cqring_event_overflow(ctx, req->cqe.user_data, res, cflags);
}
static noinline bool io_fill_cqe_aux(struct io_ring_ctx *ctx, u64 user_data,
s32 res, u32 cflags)
{