diff options
Diffstat (limited to 'include/uapi/linux/io_uring.h')
| -rw-r--r-- | include/uapi/linux/io_uring.h | 112 |
1 files changed, 107 insertions, 5 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 050fa8eb2e8f..909fb7aea638 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -10,6 +10,8 @@ #include <linux/fs.h> #include <linux/types.h> +#include <linux/io_uring/zcrx.h> + /* * this file is shared with liburing and that has to autodetect * if linux/time_types.h is available or not, it can @@ -50,7 +52,7 @@ struct io_uring_sqe { }; __u32 len; /* buffer size or number of iovecs */ union { - __kernel_rwf_t rw_flags; + __u32 rw_flags; __u32 fsync_flags; __u16 poll_events; /* compatibility */ __u32 poll32_events; /* word-reversed for BE */ @@ -73,6 +75,7 @@ struct io_uring_sqe { __u32 futex_flags; __u32 install_fd_flags; __u32 nop_flags; + __u32 pipe_flags; }; __u64 user_data; /* data to be passed back at completion time */ /* pack this to avoid bogus arm OABI complaints */ @@ -87,11 +90,16 @@ struct io_uring_sqe { union { __s32 splice_fd_in; __u32 file_index; + __u32 zcrx_ifq_idx; __u32 optlen; struct { __u16 addr_len; __u16 __pad3[1]; }; + struct { + __u8 write_stream; + __u8 __pad4[3]; + }; }; union { struct { @@ -182,7 +190,8 @@ enum io_uring_sqe_flags_bit { /* * If COOP_TASKRUN is set, get notified if task work is available for * running and a kernel transition would be needed to run it. This sets - * IORING_SQ_TASKRUN in the sq ring flags. Not valid with COOP_TASKRUN. + * IORING_SQ_TASKRUN in the sq ring flags. Not valid without COOP_TASKRUN + * or DEFER_TASKRUN. */ #define IORING_SETUP_TASKRUN_FLAG (1U << 9) #define IORING_SETUP_SQE128 (1U << 10) /* SQEs are 128 byte */ @@ -219,6 +228,30 @@ enum io_uring_sqe_flags_bit { /* Use hybrid poll in iopoll process */ #define IORING_SETUP_HYBRID_IOPOLL (1U << 17) +/* + * Allow both 16b and 32b CQEs. If a 32b CQE is posted, it will have + * IORING_CQE_F_32 set in cqe->flags. + */ +#define IORING_SETUP_CQE_MIXED (1U << 18) + +/* + * Allow both 64b and 128b SQEs. If a 128b SQE is posted, it will have + * a 128b opcode. + */ +#define IORING_SETUP_SQE_MIXED (1U << 19) + +/* + * When set, io_uring ignores SQ head and tail and fetches SQEs to submit + * starting from index 0 instead from the index stored in the head pointer. + * IOW, the user should place all SQE at the beginning of the SQ memory + * before issuing a submission syscall. + * + * It requires IORING_SETUP_NO_SQARRAY and is incompatible with + * IORING_SETUP_SQPOLL. The user must also never change the SQ head and tail + * values and keep it set to 0. Any other value is undefined behaviour. + */ +#define IORING_SETUP_SQ_REWIND (1U << 20) + enum io_uring_op { IORING_OP_NOP, IORING_OP_READV, @@ -278,6 +311,13 @@ enum io_uring_op { IORING_OP_FTRUNCATE, IORING_OP_BIND, IORING_OP_LISTEN, + IORING_OP_RECV_ZC, + IORING_OP_EPOLL_WAIT, + IORING_OP_READV_FIXED, + IORING_OP_WRITEV_FIXED, + IORING_OP_PIPE, + IORING_OP_NOP128, + IORING_OP_URING_CMD128, /* this goes last, obviously */ IORING_OP_LAST, @@ -287,9 +327,13 @@ enum io_uring_op { * sqe->uring_cmd_flags top 8bits aren't available for userspace * IORING_URING_CMD_FIXED use registered buffer; pass this flag * along with setting sqe->buf_index. + * IORING_URING_CMD_MULTISHOT must be used with buffer select, like other + * multishot commands. Not compatible with + * IORING_URING_CMD_FIXED, for now. */ #define IORING_URING_CMD_FIXED (1U << 0) -#define IORING_URING_CMD_MASK IORING_URING_CMD_FIXED +#define IORING_URING_CMD_MULTISHOT (1U << 1) +#define IORING_URING_CMD_MASK (IORING_URING_CMD_FIXED | IORING_URING_CMD_MULTISHOT) /* @@ -299,6 +343,10 @@ enum io_uring_op { /* * sqe->timeout_flags + * + * IORING_TIMEOUT_IMMEDIATE_ARG: If set, sqe->addr stores the timeout + * value in nanoseconds instead of + * pointing to a timespec. */ #define IORING_TIMEOUT_ABS (1U << 0) #define IORING_TIMEOUT_UPDATE (1U << 1) @@ -307,6 +355,7 @@ enum io_uring_op { #define IORING_LINK_TIMEOUT_UPDATE (1U << 4) #define IORING_TIMEOUT_ETIME_SUCCESS (1U << 5) #define IORING_TIMEOUT_MULTISHOT (1U << 6) +#define IORING_TIMEOUT_IMMEDIATE_ARG (1U << 7) #define IORING_TIMEOUT_CLOCK_MASK (IORING_TIMEOUT_BOOTTIME | IORING_TIMEOUT_REALTIME) #define IORING_TIMEOUT_UPDATE_MASK (IORING_TIMEOUT_UPDATE | IORING_LINK_TIMEOUT_UPDATE) /* @@ -381,12 +430,16 @@ enum io_uring_op { * the starting buffer ID in cqe->flags as per * usual for provided buffer usage. The buffers * will be contiguous from the starting buffer ID. + * + * IORING_SEND_VECTORIZED If set, SEND[_ZC] will take a pointer to a io_vec + * to allow vectorized send operations. */ #define IORING_RECVSEND_POLL_FIRST (1U << 0) #define IORING_RECV_MULTISHOT (1U << 1) #define IORING_RECVSEND_FIXED_BUF (1U << 2) #define IORING_SEND_ZC_REPORT_USAGE (1U << 3) #define IORING_RECVSEND_BUNDLE (1U << 4) +#define IORING_SEND_VECTORIZED (1U << 5) /* * cqe.res for IORING_CQE_F_NOTIF if @@ -438,6 +491,8 @@ enum io_uring_msg_ring_flags { #define IORING_NOP_FILE (1U << 1) #define IORING_NOP_FIXED_FILE (1U << 2) #define IORING_NOP_FIXED_BUFFER (1U << 3) +#define IORING_NOP_TW (1U << 4) +#define IORING_NOP_CQE32 (1U << 5) /* * IO completion data structure (Completion Queue Entry) @@ -471,12 +526,22 @@ struct io_uring_cqe { * other provided buffer type, all completions with a * buffer passed back is automatically returned to the * application. + * IORING_CQE_F_SKIP If set, then the application/liburing must ignore this + * CQE. It's only purpose is to fill a gap in the ring, + * if a large CQE is attempted posted when the ring has + * just a single small CQE worth of space left before + * wrapping. + * IORING_CQE_F_32 If set, this is a 32b/big-cqe posting. Use with rings + * setup in a mixed CQE mode, where both 16b and 32b + * CQEs may be posted to the CQ ring. */ #define IORING_CQE_F_BUFFER (1U << 0) #define IORING_CQE_F_MORE (1U << 1) #define IORING_CQE_F_SOCK_NONEMPTY (1U << 2) #define IORING_CQE_F_NOTIF (1U << 3) #define IORING_CQE_F_BUF_MORE (1U << 4) +#define IORING_CQE_F_SKIP (1U << 5) +#define IORING_CQE_F_32 (1U << 15) #define IORING_CQE_BUFFER_SHIFT 16 @@ -541,6 +606,7 @@ struct io_cqring_offsets { #define IORING_ENTER_REGISTERED_RING (1U << 4) #define IORING_ENTER_ABS_TIMER (1U << 5) #define IORING_ENTER_EXT_ARG_REG (1U << 6) +#define IORING_ENTER_NO_IOWAIT (1U << 7) /* * Passed in for io_uring_setup(2). Copied back with updated info on success @@ -578,6 +644,7 @@ struct io_uring_params { #define IORING_FEAT_RECVSEND_BUNDLE (1U << 14) #define IORING_FEAT_MIN_TIMEOUT (1U << 15) #define IORING_FEAT_RW_ATTR (1U << 16) +#define IORING_FEAT_NO_IOWAIT (1U << 17) /* * io_uring_register(2) opcodes and arguments @@ -639,13 +706,23 @@ enum io_uring_register_op { /* send MSG_RING without having a ring */ IORING_REGISTER_SEND_MSG_RING = 31, - /* 32 reserved for zc rx */ + /* register a netdev hw rx queue for zerocopy */ + IORING_REGISTER_ZCRX_IFQ = 32, /* resize CQ ring */ IORING_REGISTER_RESIZE_RINGS = 33, IORING_REGISTER_MEM_REGION = 34, + /* query various aspects of io_uring, see linux/io_uring/query.h */ + IORING_REGISTER_QUERY = 35, + + /* auxiliary zcrx configuration, see enum zcrx_ctrl_op */ + IORING_REGISTER_ZCRX_CTRL = 36, + + /* register bpf filtering programs */ + IORING_REGISTER_BPF_FILTER = 37, + /* this goes last */ IORING_REGISTER_LAST, @@ -751,6 +828,13 @@ struct io_uring_restriction { __u32 resv2[3]; }; +struct io_uring_task_restriction { + __u16 flags; + __u16 nr_res; + __u32 resv[3]; + __DECLARE_FLEX_ARRAY(struct io_uring_restriction, restrictions); +}; + struct io_uring_clock_register { __u32 clockid; __u32 __resv[3]; @@ -821,7 +905,8 @@ struct io_uring_buf_reg { __u32 ring_entries; __u16 bgid; __u16 flags; - __u64 resv[3]; + __u32 min_left; + __u32 resv[5]; }; /* argument for IORING_REGISTER_PBUF_STATUS */ @@ -954,6 +1039,23 @@ enum io_uring_socket_op { SOCKET_URING_OP_SIOCOUTQ, SOCKET_URING_OP_GETSOCKOPT, SOCKET_URING_OP_SETSOCKOPT, + SOCKET_URING_OP_TX_TIMESTAMP, + SOCKET_URING_OP_GETSOCKNAME, +}; + +/* + * SOCKET_URING_OP_TX_TIMESTAMP definitions + */ + +#define IORING_TIMESTAMP_HW_SHIFT 16 +/* The cqe->flags bit from which the timestamp type is stored */ +#define IORING_TIMESTAMP_TYPE_SHIFT (IORING_TIMESTAMP_HW_SHIFT + 1) +/* The cqe->flags flag signifying whether it's a hardware timestamp */ +#define IORING_CQE_F_TSTAMP_HW ((__u32)1 << IORING_TIMESTAMP_HW_SHIFT) + +struct io_timespec { + __u64 tv_sec; + __u64 tv_nsec; }; #ifdef __cplusplus |