[PATCH liburing 1/1] Update uapi headers

[PATCH liburing 1/1] Update uapi headers

[Pavel Begunkov]

We'll need new zcrx interfaces including zcrx specific query and ctrl
registeration definitions. Pull them in.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 src/include/liburing/io_uring.h       | 42 ++++++++++++++++++++++++++-
 src/include/liburing/io_uring/query.h | 28 ++++++++++++++++++
 2 files changed, 69 insertions(+), 1 deletion(-)

diff --git a/src/include/liburing/io_uring.h b/src/include/liburing/io_uring.h
index 7a0b517b..10497daf 100644
--- a/src/include/liburing/io_uring.h
+++ b/src/include/liburing/io_uring.h
@@ -1049,6 +1049,18 @@ struct io_uring_zcrx_area_reg {
 	__u64	__resv2[2];
 };
 
+enum zcrx_reg_flags {
+	ZCRX_REG_IMPORT	= 1,
+};
+
+enum zcrx_features {
+	/*
+	 * The user can ask for the desired rx page size by passing the
+	 * value in struct io_uring_zcrx_ifq_reg::rx_buf_len.
+	 */
+	ZCRX_FEATURE_RX_PAGE_SIZE	= 1 << 0,
+};
+
 /*
  * Argument for IORING_REGISTER_ZCRX_IFQ
  */
@@ -1063,10 +1075,38 @@ struct io_uring_zcrx_ifq_reg {
 
 	struct io_uring_zcrx_offsets offsets;
 	__u32	zcrx_id;
-	__u32	__resv2;
+	__u32	rx_buf_len;
 	__u64	__resv[3];
 };
 
+enum zcrx_ctrl_op {
+	ZCRX_CTRL_FLUSH_RQ,
+	ZCRX_CTRL_EXPORT,
+
+	__ZCRX_CTRL_LAST,
+};
+
+struct zcrx_ctrl_flush_rq {
+	__u64		__resv[6];
+};
+
+struct zcrx_ctrl_export {
+	__u32		zcrx_fd;
+	__u32 		__resv1[11];
+};
+
+struct zcrx_ctrl {
+	__u32	zcrx_id;
+	__u32	op; /* see enum zcrx_ctrl_op */
+	__u64	__resv[2];
+
+	union {
+		struct zcrx_ctrl_export		zc_export;
+		struct zcrx_ctrl_flush_rq	zc_flush;
+	};
+};
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/include/liburing/io_uring/query.h b/src/include/liburing/io_uring/query.h
index 5d754322..0b624817 100644
--- a/src/include/liburing/io_uring/query.h
+++ b/src/include/liburing/io_uring/query.h
@@ -18,6 +18,8 @@ struct io_uring_query_hdr {
 
 enum {
 	IO_URING_QUERY_OPCODES			= 0,
+	IO_URING_QUERY_ZCRX			= 1,
+	IO_URING_QUERY_SCQ			= 2,
 
 	__IO_URING_QUERY_MAX,
 };
@@ -36,6 +38,32 @@ struct io_uring_query_opcode {
 	__u64	enter_flags;
 	/* Bitmask of all supported IOSQE_* flags */
 	__u64	sqe_flags;
+	/* The number of available query opcodes */
+	__u32	nr_query_opcodes;
+	__u32	__pad;
+};
+
+struct io_uring_query_zcrx {
+	/* Bitmask of supported ZCRX_REG_* flags, */
+	__u64 register_flags;
+	/* Bitmask of all supported IORING_ZCRX_AREA_* flags */
+	__u64 area_flags;
+	/* The number of supported ZCRX_CTRL_* opcodes */
+	__u32 nr_ctrl_opcodes;
+	/* Bitmask of ZCRX_FEATURE_* indicating which features are available */
+	__u32 features;
+	/* The refill ring header size */
+	__u32 rq_hdr_size;
+	/* The alignment for the header */
+	__u32 rq_hdr_alignment;
+	__u64 __resv2;
+};
+
+struct io_uring_query_scq {
+	/* The SQ/CQ rings header size */
+	__u64 hdr_size;
+	/* The alignment for the header */
+	__u64 hdr_alignment;
 };
 
 #endif
-- 
2.53.0

Re: [PATCH liburing 1/1] Update uapi headers

[Jens Axboe]

On Mon, 16 Mar 2026 23:47:54 +0000, Pavel Begunkov wrote:
> We'll need new zcrx interfaces including zcrx specific query and ctrl
> registeration definitions. Pull them in.
> 
> 

Applied, thanks!

[1/1] Update uapi headers
      commit: cb8cf3b7e146a888aa2206161855cff9f09af762

Best regards,
-- 
Jens Axboe