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| author | Pavel Begunkov <asml.silence@gmail.com> | 2026-08-07 14:19:34 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-08-15 17:31:24 -0600 |
| commit | 3c8a5e271594f6ba6d2af40f229cbcd0bcb08c06 (patch) | |
| tree | 9b7c718ba81e9f810f3ce86c52803fa093b83dd3 /include/uapi | |
| parent | 5a22bfdd615bf47a0ea5e11f5090b1011764b3a4 (diff) | |
| download | linux-3c8a5e271594f6ba6d2af40f229cbcd0bcb08c06.tar.gz linux-3c8a5e271594f6ba6d2af40f229cbcd0bcb08c06.zip | |
io_uring/zcrx: add dynamic area provisioning
It's not always possible for the user to predict during registration how
much memory zcrx will need to sustain the traffic. Allow to dynamically
add more areas with a new ctrl code ZCRX_CTRL_ADD_AREA.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://patch.msgid.link/43495ca686713b3f0014c9f47c4c0276d704da4d.1786108672.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/io_uring/zcrx.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring/zcrx.h b/include/uapi/linux/io_uring/zcrx.h index 15c05c45ce36..08cdb173b04b 100644 --- a/include/uapi/linux/io_uring/zcrx.h +++ b/include/uapi/linux/io_uring/zcrx.h @@ -116,6 +116,7 @@ enum zcrx_ctrl_op { ZCRX_CTRL_FLUSH_RQ, ZCRX_CTRL_EXPORT, ZCRX_CTRL_ARM_NOTIFICATION, + ZCRX_CTRL_ADD_AREA, __ZCRX_CTRL_LAST, }; @@ -134,6 +135,11 @@ struct zcrx_ctrl_arm_notif { __u32 __resv[11]; }; +struct zcrx_ctrl_add_area { + __u64 area_ptr; /* pointer to struct io_uring_zcrx_area_reg */ + __u64 __resv[5]; +}; + struct zcrx_ctrl { __u32 zcrx_id; __u32 op; /* see enum zcrx_ctrl_op */ @@ -143,6 +149,7 @@ struct zcrx_ctrl { struct zcrx_ctrl_export zc_export; struct zcrx_ctrl_flush_rq zc_flush; struct zcrx_ctrl_arm_notif zc_arm_notif; + struct zcrx_ctrl_add_area zc_area; }; }; |