dlan17/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

io_uring/nop: add support for IORING_SETUP_CQE_MIXED

Browse Source 
This adds support for setting IORING_NOP_CQE32 as a flag for a NOP
command, in which case a 32b CQE will be posted rather than a regular
one. This is the default if the ring has been setup with
IORING_SETUP_CQE32. If the ring has been setup with
IORING_SETUP_CQE_MIXED, then 16b CQEs will be posted without this flag
set, and 32b CQEs if this flag is set. For the latter case, sqe->off is
what will be posted as cqe->big_cqe[0] and sqe->addr is what will be
posted as cqe->big_cqe[1].

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2025-08-27 11:24:15 -06:00
parent e26dca67fd
commit 806ecb209a
2 changed files with 16 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/uapi/linux/io_uring.h
+1
View File
@@ -464,6 +464,7 @@ enum io_uring_msg_ring_flags {
#define IORING_NOP_FIXED_FILE (1U << 2)
#define IORING_NOP_FIXED_BUFFER (1U << 3)
#define IORING_NOP_TW (1U << 4)
#define IORING_NOP_CQE32 (1U << 5)
/*
* IO completion data structure (Completion Queue Entry)