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| 1 | /* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */ |
|---|---|
| 2 | /* |
| 3 | * Header file for the io_uring query interface. |
| 4 | */ |
| 5 | #ifndef LINUX_IO_URING_QUERY_H |
| 6 | #define LINUX_IO_URING_QUERY_H |
| 7 | |
| 8 | #include <linux/types.h> |
| 9 | |
| 10 | struct io_uring_query_hdr { |
| 11 | __u64 next_entry; |
| 12 | __u64 query_data; |
| 13 | __u32 query_op; |
| 14 | __u32 size; |
| 15 | __s32 result; |
| 16 | __u32 __resv[3]; |
| 17 | }; |
| 18 | |
| 19 | enum { |
| 20 | IO_URING_QUERY_OPCODES = 0, |
| 21 | IO_URING_QUERY_ZCRX = 1, |
| 22 | IO_URING_QUERY_SCQ = 2, |
| 23 | |
| 24 | __IO_URING_QUERY_MAX, |
| 25 | }; |
| 26 | |
| 27 | /* Doesn't require a ring */ |
| 28 | struct io_uring_query_opcode { |
| 29 | /* The number of supported IORING_OP_* opcodes */ |
| 30 | __u32 nr_request_opcodes; |
| 31 | /* The number of supported IORING_[UN]REGISTER_* opcodes */ |
| 32 | __u32 nr_register_opcodes; |
| 33 | /* Bitmask of all supported IORING_FEAT_* flags */ |
| 34 | __u64 feature_flags; |
| 35 | /* Bitmask of all supported IORING_SETUP_* flags */ |
| 36 | __u64 ring_setup_flags; |
| 37 | /* Bitmask of all supported IORING_ENTER_** flags */ |
| 38 | __u64 enter_flags; |
| 39 | /* Bitmask of all supported IOSQE_* flags */ |
| 40 | __u64 sqe_flags; |
| 41 | /* The number of available query opcodes */ |
| 42 | __u32 nr_query_opcodes; |
| 43 | __u32 __pad; |
| 44 | }; |
| 45 | |
| 46 | struct io_uring_query_zcrx { |
| 47 | /* Bitmask of supported ZCRX_REG_* flags, */ |
| 48 | __u64 register_flags; |
| 49 | /* Bitmask of all supported IORING_ZCRX_AREA_* flags */ |
| 50 | __u64 area_flags; |
| 51 | /* The number of supported ZCRX_CTRL_* opcodes */ |
| 52 | __u32 nr_ctrl_opcodes; |
| 53 | __u32 __resv1; |
| 54 | /* The refill ring header size */ |
| 55 | __u32 rq_hdr_size; |
| 56 | /* The alignment for the header */ |
| 57 | __u32 rq_hdr_alignment; |
| 58 | __u64 __resv2; |
| 59 | }; |
| 60 | |
| 61 | struct io_uring_query_scq { |
| 62 | /* The SQ/CQ rings header size */ |
| 63 | __u64 hdr_size; |
| 64 | /* The alignment for the header */ |
| 65 | __u64 hdr_alignment; |
| 66 | }; |
| 67 | |
| 68 | #endif |
| 69 |
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