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| author | Pavel Begunkov <asml.silence@gmail.com> | 2025-05-01 13:17:18 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-05-06 10:11:00 -0600 |
| commit | a5c98e9424573649e59988199a3356a79c9e1fd9 (patch) | |
| tree | cf32023bb8e50a6834ff7b7799b2b2a5256e7c93 /include/uapi | |
| parent | 8a62804248fff77749048a0f5511649b2569bba9 (diff) | |
| download | linux-next-a5c98e9424573649e59988199a3356a79c9e1fd9.tar.gz linux-next-a5c98e9424573649e59988199a3356a79c9e1fd9.zip | |
io_uring/zcrx: dmabuf backed zerocopy receive
Add support for dmabuf backed zcrx areas. To use it, the user should
pass IORING_ZCRX_AREA_DMABUF in the struct io_uring_zcrx_area_reg flags
field and pass a dmabuf fd in the dmabuf_fd field.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20bb1890e60a82ec945ab36370d1fd54be414ab6.1746097431.git.asml.silence@gmail.com
Link: https://lore.kernel.org/io-uring/6e37db97303212bbd8955f9501cf99b579f8aece.1746547722.git.asml.silence@gmail.com
[axboe: fold in fixup]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/io_uring.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 130f3bc71a69..5ce096090b0c 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -990,12 +990,16 @@ struct io_uring_zcrx_offsets { __u64 __resv[2]; }; +enum io_uring_zcrx_area_flags { + IORING_ZCRX_AREA_DMABUF = 1, +}; + struct io_uring_zcrx_area_reg { __u64 addr; __u64 len; __u64 rq_area_token; __u32 flags; - __u32 __resv1; + __u32 dmabuf_fd; __u64 __resv2[2]; }; |