diff options
| 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 /io_uring/zcrx.h | |
| parent | 8a62804248fff77749048a0f5511649b2569bba9 (diff) | |
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 'io_uring/zcrx.h')
| -rw-r--r-- | io_uring/zcrx.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/io_uring/zcrx.h b/io_uring/zcrx.h index 9c22807af807..2f5e26389f22 100644 --- a/io_uring/zcrx.h +++ b/io_uring/zcrx.h @@ -3,15 +3,22 @@ #define IOU_ZC_RX_H #include <linux/io_uring_types.h> +#include <linux/dma-buf.h> #include <linux/socket.h> #include <net/page_pool/types.h> #include <net/net_trackers.h> struct io_zcrx_mem { unsigned long size; + bool is_dmabuf; struct page **pages; unsigned long nr_folios; + + struct dma_buf_attachment *attach; + struct dma_buf *dmabuf; + struct sg_table *sgt; + unsigned long dmabuf_offset; }; struct io_zcrx_area { |