1*7746a6adSBreno Leitao /* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */ 2*7746a6adSBreno Leitao /* 3*7746a6adSBreno Leitao * Header file for the io_uring interface. 4*7746a6adSBreno Leitao * 5*7746a6adSBreno Leitao * Copyright (C) 2019 Jens Axboe 6*7746a6adSBreno Leitao * Copyright (C) 2019 Christoph Hellwig 7*7746a6adSBreno Leitao */ 8*7746a6adSBreno Leitao #ifndef LINUX_IO_URING_H 9*7746a6adSBreno Leitao #define LINUX_IO_URING_H 10*7746a6adSBreno Leitao 11*7746a6adSBreno Leitao #include <linux/fs.h> 12*7746a6adSBreno Leitao #include <linux/types.h> 13*7746a6adSBreno Leitao /* 14*7746a6adSBreno Leitao * this file is shared with liburing and that has to autodetect 15*7746a6adSBreno Leitao * if linux/time_types.h is available or not, it can 16*7746a6adSBreno Leitao * define UAPI_LINUX_IO_URING_H_SKIP_LINUX_TIME_TYPES_H 17*7746a6adSBreno Leitao * if linux/time_types.h is not available 18*7746a6adSBreno Leitao */ 19*7746a6adSBreno Leitao #ifndef UAPI_LINUX_IO_URING_H_SKIP_LINUX_TIME_TYPES_H 20*7746a6adSBreno Leitao #include <linux/time_types.h> 21*7746a6adSBreno Leitao #endif 22*7746a6adSBreno Leitao 23*7746a6adSBreno Leitao #ifdef __cplusplus 24*7746a6adSBreno Leitao extern "C" { 25*7746a6adSBreno Leitao #endif 26*7746a6adSBreno Leitao 27*7746a6adSBreno Leitao /* 28*7746a6adSBreno Leitao * IO submission data structure (Submission Queue Entry) 29*7746a6adSBreno Leitao */ 30*7746a6adSBreno Leitao struct io_uring_sqe { 31*7746a6adSBreno Leitao __u8 opcode; /* type of operation for this sqe */ 32*7746a6adSBreno Leitao __u8 flags; /* IOSQE_ flags */ 33*7746a6adSBreno Leitao __u16 ioprio; /* ioprio for the request */ 34*7746a6adSBreno Leitao __s32 fd; /* file descriptor to do IO on */ 35*7746a6adSBreno Leitao union { 36*7746a6adSBreno Leitao __u64 off; /* offset into file */ 37*7746a6adSBreno Leitao __u64 addr2; 38*7746a6adSBreno Leitao struct { 39*7746a6adSBreno Leitao __u32 cmd_op; 40*7746a6adSBreno Leitao __u32 __pad1; 41*7746a6adSBreno Leitao }; 42*7746a6adSBreno Leitao }; 43*7746a6adSBreno Leitao union { 44*7746a6adSBreno Leitao __u64 addr; /* pointer to buffer or iovecs */ 45*7746a6adSBreno Leitao __u64 splice_off_in; 46*7746a6adSBreno Leitao struct { 47*7746a6adSBreno Leitao __u32 level; 48*7746a6adSBreno Leitao __u32 optname; 49*7746a6adSBreno Leitao }; 50*7746a6adSBreno Leitao }; 51*7746a6adSBreno Leitao __u32 len; /* buffer size or number of iovecs */ 52*7746a6adSBreno Leitao union { 53*7746a6adSBreno Leitao __kernel_rwf_t rw_flags; 54*7746a6adSBreno Leitao __u32 fsync_flags; 55*7746a6adSBreno Leitao __u16 poll_events; /* compatibility */ 56*7746a6adSBreno Leitao __u32 poll32_events; /* word-reversed for BE */ 57*7746a6adSBreno Leitao __u32 sync_range_flags; 58*7746a6adSBreno Leitao __u32 msg_flags; 59*7746a6adSBreno Leitao __u32 timeout_flags; 60*7746a6adSBreno Leitao __u32 accept_flags; 61*7746a6adSBreno Leitao __u32 cancel_flags; 62*7746a6adSBreno Leitao __u32 open_flags; 63*7746a6adSBreno Leitao __u32 statx_flags; 64*7746a6adSBreno Leitao __u32 fadvise_advice; 65*7746a6adSBreno Leitao __u32 splice_flags; 66*7746a6adSBreno Leitao __u32 rename_flags; 67*7746a6adSBreno Leitao __u32 unlink_flags; 68*7746a6adSBreno Leitao __u32 hardlink_flags; 69*7746a6adSBreno Leitao __u32 xattr_flags; 70*7746a6adSBreno Leitao __u32 msg_ring_flags; 71*7746a6adSBreno Leitao __u32 uring_cmd_flags; 72*7746a6adSBreno Leitao __u32 waitid_flags; 73*7746a6adSBreno Leitao __u32 futex_flags; 74*7746a6adSBreno Leitao }; 75*7746a6adSBreno Leitao __u64 user_data; /* data to be passed back at completion time */ 76*7746a6adSBreno Leitao /* pack this to avoid bogus arm OABI complaints */ 77*7746a6adSBreno Leitao union { 78*7746a6adSBreno Leitao /* index into fixed buffers, if used */ 79*7746a6adSBreno Leitao __u16 buf_index; 80*7746a6adSBreno Leitao /* for grouped buffer selection */ 81*7746a6adSBreno Leitao __u16 buf_group; 82*7746a6adSBreno Leitao } __attribute__((packed)); 83*7746a6adSBreno Leitao /* personality to use, if used */ 84*7746a6adSBreno Leitao __u16 personality; 85*7746a6adSBreno Leitao union { 86*7746a6adSBreno Leitao __s32 splice_fd_in; 87*7746a6adSBreno Leitao __u32 file_index; 88*7746a6adSBreno Leitao __u32 optlen; 89*7746a6adSBreno Leitao struct { 90*7746a6adSBreno Leitao __u16 addr_len; 91*7746a6adSBreno Leitao __u16 __pad3[1]; 92*7746a6adSBreno Leitao }; 93*7746a6adSBreno Leitao }; 94*7746a6adSBreno Leitao union { 95*7746a6adSBreno Leitao struct { 96*7746a6adSBreno Leitao __u64 addr3; 97*7746a6adSBreno Leitao __u64 __pad2[1]; 98*7746a6adSBreno Leitao }; 99*7746a6adSBreno Leitao __u64 optval; 100*7746a6adSBreno Leitao /* 101*7746a6adSBreno Leitao * If the ring is initialized with IORING_SETUP_SQE128, then 102*7746a6adSBreno Leitao * this field is used for 80 bytes of arbitrary command data 103*7746a6adSBreno Leitao */ 104*7746a6adSBreno Leitao __u8 cmd[0]; 105*7746a6adSBreno Leitao }; 106*7746a6adSBreno Leitao }; 107*7746a6adSBreno Leitao 108*7746a6adSBreno Leitao /* 109*7746a6adSBreno Leitao * If sqe->file_index is set to this for opcodes that instantiate a new 110*7746a6adSBreno Leitao * direct descriptor (like openat/openat2/accept), then io_uring will allocate 111*7746a6adSBreno Leitao * an available direct descriptor instead of having the application pass one 112*7746a6adSBreno Leitao * in. The picked direct descriptor will be returned in cqe->res, or -ENFILE 113*7746a6adSBreno Leitao * if the space is full. 114*7746a6adSBreno Leitao */ 115*7746a6adSBreno Leitao #define IORING_FILE_INDEX_ALLOC (~0U) 116*7746a6adSBreno Leitao 117*7746a6adSBreno Leitao enum { 118*7746a6adSBreno Leitao IOSQE_FIXED_FILE_BIT, 119*7746a6adSBreno Leitao IOSQE_IO_DRAIN_BIT, 120*7746a6adSBreno Leitao IOSQE_IO_LINK_BIT, 121*7746a6adSBreno Leitao IOSQE_IO_HARDLINK_BIT, 122*7746a6adSBreno Leitao IOSQE_ASYNC_BIT, 123*7746a6adSBreno Leitao IOSQE_BUFFER_SELECT_BIT, 124*7746a6adSBreno Leitao IOSQE_CQE_SKIP_SUCCESS_BIT, 125*7746a6adSBreno Leitao }; 126*7746a6adSBreno Leitao 127*7746a6adSBreno Leitao /* 128*7746a6adSBreno Leitao * sqe->flags 129*7746a6adSBreno Leitao */ 130*7746a6adSBreno Leitao /* use fixed fileset */ 131*7746a6adSBreno Leitao #define IOSQE_FIXED_FILE (1U << IOSQE_FIXED_FILE_BIT) 132*7746a6adSBreno Leitao /* issue after inflight IO */ 133*7746a6adSBreno Leitao #define IOSQE_IO_DRAIN (1U << IOSQE_IO_DRAIN_BIT) 134*7746a6adSBreno Leitao /* links next sqe */ 135*7746a6adSBreno Leitao #define IOSQE_IO_LINK (1U << IOSQE_IO_LINK_BIT) 136*7746a6adSBreno Leitao /* like LINK, but stronger */ 137*7746a6adSBreno Leitao #define IOSQE_IO_HARDLINK (1U << IOSQE_IO_HARDLINK_BIT) 138*7746a6adSBreno Leitao /* always go async */ 139*7746a6adSBreno Leitao #define IOSQE_ASYNC (1U << IOSQE_ASYNC_BIT) 140*7746a6adSBreno Leitao /* select buffer from sqe->buf_group */ 141*7746a6adSBreno Leitao #define IOSQE_BUFFER_SELECT (1U << IOSQE_BUFFER_SELECT_BIT) 142*7746a6adSBreno Leitao /* don't post CQE if request succeeded */ 143*7746a6adSBreno Leitao #define IOSQE_CQE_SKIP_SUCCESS (1U << IOSQE_CQE_SKIP_SUCCESS_BIT) 144*7746a6adSBreno Leitao 145*7746a6adSBreno Leitao /* 146*7746a6adSBreno Leitao * io_uring_setup() flags 147*7746a6adSBreno Leitao */ 148*7746a6adSBreno Leitao #define IORING_SETUP_IOPOLL (1U << 0) /* io_context is polled */ 149*7746a6adSBreno Leitao #define IORING_SETUP_SQPOLL (1U << 1) /* SQ poll thread */ 150*7746a6adSBreno Leitao #define IORING_SETUP_SQ_AFF (1U << 2) /* sq_thread_cpu is valid */ 151*7746a6adSBreno Leitao #define IORING_SETUP_CQSIZE (1U << 3) /* app defines CQ size */ 152*7746a6adSBreno Leitao #define IORING_SETUP_CLAMP (1U << 4) /* clamp SQ/CQ ring sizes */ 153*7746a6adSBreno Leitao #define IORING_SETUP_ATTACH_WQ (1U << 5) /* attach to existing wq */ 154*7746a6adSBreno Leitao #define IORING_SETUP_R_DISABLED (1U << 6) /* start with ring disabled */ 155*7746a6adSBreno Leitao #define IORING_SETUP_SUBMIT_ALL (1U << 7) /* continue submit on error */ 156*7746a6adSBreno Leitao /* 157*7746a6adSBreno Leitao * Cooperative task running. When requests complete, they often require 158*7746a6adSBreno Leitao * forcing the submitter to transition to the kernel to complete. If this 159*7746a6adSBreno Leitao * flag is set, work will be done when the task transitions anyway, rather 160*7746a6adSBreno Leitao * than force an inter-processor interrupt reschedule. This avoids interrupting 161*7746a6adSBreno Leitao * a task running in userspace, and saves an IPI. 162*7746a6adSBreno Leitao */ 163*7746a6adSBreno Leitao #define IORING_SETUP_COOP_TASKRUN (1U << 8) 164*7746a6adSBreno Leitao /* 165*7746a6adSBreno Leitao * If COOP_TASKRUN is set, get notified if task work is available for 166*7746a6adSBreno Leitao * running and a kernel transition would be needed to run it. This sets 167*7746a6adSBreno Leitao * IORING_SQ_TASKRUN in the sq ring flags. Not valid with COOP_TASKRUN. 168*7746a6adSBreno Leitao */ 169*7746a6adSBreno Leitao #define IORING_SETUP_TASKRUN_FLAG (1U << 9) 170*7746a6adSBreno Leitao #define IORING_SETUP_SQE128 (1U << 10) /* SQEs are 128 byte */ 171*7746a6adSBreno Leitao #define IORING_SETUP_CQE32 (1U << 11) /* CQEs are 32 byte */ 172*7746a6adSBreno Leitao /* 173*7746a6adSBreno Leitao * Only one task is allowed to submit requests 174*7746a6adSBreno Leitao */ 175*7746a6adSBreno Leitao #define IORING_SETUP_SINGLE_ISSUER (1U << 12) 176*7746a6adSBreno Leitao 177*7746a6adSBreno Leitao /* 178*7746a6adSBreno Leitao * Defer running task work to get events. 179*7746a6adSBreno Leitao * Rather than running bits of task work whenever the task transitions 180*7746a6adSBreno Leitao * try to do it just before it is needed. 181*7746a6adSBreno Leitao */ 182*7746a6adSBreno Leitao #define IORING_SETUP_DEFER_TASKRUN (1U << 13) 183*7746a6adSBreno Leitao 184*7746a6adSBreno Leitao /* 185*7746a6adSBreno Leitao * Application provides the memory for the rings 186*7746a6adSBreno Leitao */ 187*7746a6adSBreno Leitao #define IORING_SETUP_NO_MMAP (1U << 14) 188*7746a6adSBreno Leitao 189*7746a6adSBreno Leitao /* 190*7746a6adSBreno Leitao * Register the ring fd in itself for use with 191*7746a6adSBreno Leitao * IORING_REGISTER_USE_REGISTERED_RING; return a registered fd index rather 192*7746a6adSBreno Leitao * than an fd. 193*7746a6adSBreno Leitao */ 194*7746a6adSBreno Leitao #define IORING_SETUP_REGISTERED_FD_ONLY (1U << 15) 195*7746a6adSBreno Leitao 196*7746a6adSBreno Leitao /* 197*7746a6adSBreno Leitao * Removes indirection through the SQ index array. 198*7746a6adSBreno Leitao */ 199*7746a6adSBreno Leitao #define IORING_SETUP_NO_SQARRAY (1U << 16) 200*7746a6adSBreno Leitao 201*7746a6adSBreno Leitao enum io_uring_op { 202*7746a6adSBreno Leitao IORING_OP_NOP, 203*7746a6adSBreno Leitao IORING_OP_READV, 204*7746a6adSBreno Leitao IORING_OP_WRITEV, 205*7746a6adSBreno Leitao IORING_OP_FSYNC, 206*7746a6adSBreno Leitao IORING_OP_READ_FIXED, 207*7746a6adSBreno Leitao IORING_OP_WRITE_FIXED, 208*7746a6adSBreno Leitao IORING_OP_POLL_ADD, 209*7746a6adSBreno Leitao IORING_OP_POLL_REMOVE, 210*7746a6adSBreno Leitao IORING_OP_SYNC_FILE_RANGE, 211*7746a6adSBreno Leitao IORING_OP_SENDMSG, 212*7746a6adSBreno Leitao IORING_OP_RECVMSG, 213*7746a6adSBreno Leitao IORING_OP_TIMEOUT, 214*7746a6adSBreno Leitao IORING_OP_TIMEOUT_REMOVE, 215*7746a6adSBreno Leitao IORING_OP_ACCEPT, 216*7746a6adSBreno Leitao IORING_OP_ASYNC_CANCEL, 217*7746a6adSBreno Leitao IORING_OP_LINK_TIMEOUT, 218*7746a6adSBreno Leitao IORING_OP_CONNECT, 219*7746a6adSBreno Leitao IORING_OP_FALLOCATE, 220*7746a6adSBreno Leitao IORING_OP_OPENAT, 221*7746a6adSBreno Leitao IORING_OP_CLOSE, 222*7746a6adSBreno Leitao IORING_OP_FILES_UPDATE, 223*7746a6adSBreno Leitao IORING_OP_STATX, 224*7746a6adSBreno Leitao IORING_OP_READ, 225*7746a6adSBreno Leitao IORING_OP_WRITE, 226*7746a6adSBreno Leitao IORING_OP_FADVISE, 227*7746a6adSBreno Leitao IORING_OP_MADVISE, 228*7746a6adSBreno Leitao IORING_OP_SEND, 229*7746a6adSBreno Leitao IORING_OP_RECV, 230*7746a6adSBreno Leitao IORING_OP_OPENAT2, 231*7746a6adSBreno Leitao IORING_OP_EPOLL_CTL, 232*7746a6adSBreno Leitao IORING_OP_SPLICE, 233*7746a6adSBreno Leitao IORING_OP_PROVIDE_BUFFERS, 234*7746a6adSBreno Leitao IORING_OP_REMOVE_BUFFERS, 235*7746a6adSBreno Leitao IORING_OP_TEE, 236*7746a6adSBreno Leitao IORING_OP_SHUTDOWN, 237*7746a6adSBreno Leitao IORING_OP_RENAMEAT, 238*7746a6adSBreno Leitao IORING_OP_UNLINKAT, 239*7746a6adSBreno Leitao IORING_OP_MKDIRAT, 240*7746a6adSBreno Leitao IORING_OP_SYMLINKAT, 241*7746a6adSBreno Leitao IORING_OP_LINKAT, 242*7746a6adSBreno Leitao IORING_OP_MSG_RING, 243*7746a6adSBreno Leitao IORING_OP_FSETXATTR, 244*7746a6adSBreno Leitao IORING_OP_SETXATTR, 245*7746a6adSBreno Leitao IORING_OP_FGETXATTR, 246*7746a6adSBreno Leitao IORING_OP_GETXATTR, 247*7746a6adSBreno Leitao IORING_OP_SOCKET, 248*7746a6adSBreno Leitao IORING_OP_URING_CMD, 249*7746a6adSBreno Leitao IORING_OP_SEND_ZC, 250*7746a6adSBreno Leitao IORING_OP_SENDMSG_ZC, 251*7746a6adSBreno Leitao IORING_OP_READ_MULTISHOT, 252*7746a6adSBreno Leitao IORING_OP_WAITID, 253*7746a6adSBreno Leitao IORING_OP_FUTEX_WAIT, 254*7746a6adSBreno Leitao IORING_OP_FUTEX_WAKE, 255*7746a6adSBreno Leitao IORING_OP_FUTEX_WAITV, 256*7746a6adSBreno Leitao 257*7746a6adSBreno Leitao /* this goes last, obviously */ 258*7746a6adSBreno Leitao IORING_OP_LAST, 259*7746a6adSBreno Leitao }; 260*7746a6adSBreno Leitao 261*7746a6adSBreno Leitao /* 262*7746a6adSBreno Leitao * sqe->uring_cmd_flags top 8bits aren't available for userspace 263*7746a6adSBreno Leitao * IORING_URING_CMD_FIXED use registered buffer; pass this flag 264*7746a6adSBreno Leitao * along with setting sqe->buf_index. 265*7746a6adSBreno Leitao */ 266*7746a6adSBreno Leitao #define IORING_URING_CMD_FIXED (1U << 0) 267*7746a6adSBreno Leitao #define IORING_URING_CMD_MASK IORING_URING_CMD_FIXED 268*7746a6adSBreno Leitao 269*7746a6adSBreno Leitao 270*7746a6adSBreno Leitao /* 271*7746a6adSBreno Leitao * sqe->fsync_flags 272*7746a6adSBreno Leitao */ 273*7746a6adSBreno Leitao #define IORING_FSYNC_DATASYNC (1U << 0) 274*7746a6adSBreno Leitao 275*7746a6adSBreno Leitao /* 276*7746a6adSBreno Leitao * sqe->timeout_flags 277*7746a6adSBreno Leitao */ 278*7746a6adSBreno Leitao #define IORING_TIMEOUT_ABS (1U << 0) 279*7746a6adSBreno Leitao #define IORING_TIMEOUT_UPDATE (1U << 1) 280*7746a6adSBreno Leitao #define IORING_TIMEOUT_BOOTTIME (1U << 2) 281*7746a6adSBreno Leitao #define IORING_TIMEOUT_REALTIME (1U << 3) 282*7746a6adSBreno Leitao #define IORING_LINK_TIMEOUT_UPDATE (1U << 4) 283*7746a6adSBreno Leitao #define IORING_TIMEOUT_ETIME_SUCCESS (1U << 5) 284*7746a6adSBreno Leitao #define IORING_TIMEOUT_MULTISHOT (1U << 6) 285*7746a6adSBreno Leitao #define IORING_TIMEOUT_CLOCK_MASK (IORING_TIMEOUT_BOOTTIME | IORING_TIMEOUT_REALTIME) 286*7746a6adSBreno Leitao #define IORING_TIMEOUT_UPDATE_MASK (IORING_TIMEOUT_UPDATE | IORING_LINK_TIMEOUT_UPDATE) 287*7746a6adSBreno Leitao /* 288*7746a6adSBreno Leitao * sqe->splice_flags 289*7746a6adSBreno Leitao * extends splice(2) flags 290*7746a6adSBreno Leitao */ 291*7746a6adSBreno Leitao #define SPLICE_F_FD_IN_FIXED (1U << 31) /* the last bit of __u32 */ 292*7746a6adSBreno Leitao 293*7746a6adSBreno Leitao /* 294*7746a6adSBreno Leitao * POLL_ADD flags. Note that since sqe->poll_events is the flag space, the 295*7746a6adSBreno Leitao * command flags for POLL_ADD are stored in sqe->len. 296*7746a6adSBreno Leitao * 297*7746a6adSBreno Leitao * IORING_POLL_ADD_MULTI Multishot poll. Sets IORING_CQE_F_MORE if 298*7746a6adSBreno Leitao * the poll handler will continue to report 299*7746a6adSBreno Leitao * CQEs on behalf of the same SQE. 300*7746a6adSBreno Leitao * 301*7746a6adSBreno Leitao * IORING_POLL_UPDATE Update existing poll request, matching 302*7746a6adSBreno Leitao * sqe->addr as the old user_data field. 303*7746a6adSBreno Leitao * 304*7746a6adSBreno Leitao * IORING_POLL_LEVEL Level triggered poll. 305*7746a6adSBreno Leitao */ 306*7746a6adSBreno Leitao #define IORING_POLL_ADD_MULTI (1U << 0) 307*7746a6adSBreno Leitao #define IORING_POLL_UPDATE_EVENTS (1U << 1) 308*7746a6adSBreno Leitao #define IORING_POLL_UPDATE_USER_DATA (1U << 2) 309*7746a6adSBreno Leitao #define IORING_POLL_ADD_LEVEL (1U << 3) 310*7746a6adSBreno Leitao 311*7746a6adSBreno Leitao /* 312*7746a6adSBreno Leitao * ASYNC_CANCEL flags. 313*7746a6adSBreno Leitao * 314*7746a6adSBreno Leitao * IORING_ASYNC_CANCEL_ALL Cancel all requests that match the given key 315*7746a6adSBreno Leitao * IORING_ASYNC_CANCEL_FD Key off 'fd' for cancelation rather than the 316*7746a6adSBreno Leitao * request 'user_data' 317*7746a6adSBreno Leitao * IORING_ASYNC_CANCEL_ANY Match any request 318*7746a6adSBreno Leitao * IORING_ASYNC_CANCEL_FD_FIXED 'fd' passed in is a fixed descriptor 319*7746a6adSBreno Leitao * IORING_ASYNC_CANCEL_USERDATA Match on user_data, default for no other key 320*7746a6adSBreno Leitao * IORING_ASYNC_CANCEL_OP Match request based on opcode 321*7746a6adSBreno Leitao */ 322*7746a6adSBreno Leitao #define IORING_ASYNC_CANCEL_ALL (1U << 0) 323*7746a6adSBreno Leitao #define IORING_ASYNC_CANCEL_FD (1U << 1) 324*7746a6adSBreno Leitao #define IORING_ASYNC_CANCEL_ANY (1U << 2) 325*7746a6adSBreno Leitao #define IORING_ASYNC_CANCEL_FD_FIXED (1U << 3) 326*7746a6adSBreno Leitao #define IORING_ASYNC_CANCEL_USERDATA (1U << 4) 327*7746a6adSBreno Leitao #define IORING_ASYNC_CANCEL_OP (1U << 5) 328*7746a6adSBreno Leitao 329*7746a6adSBreno Leitao /* 330*7746a6adSBreno Leitao * send/sendmsg and recv/recvmsg flags (sqe->ioprio) 331*7746a6adSBreno Leitao * 332*7746a6adSBreno Leitao * IORING_RECVSEND_POLL_FIRST If set, instead of first attempting to send 333*7746a6adSBreno Leitao * or receive and arm poll if that yields an 334*7746a6adSBreno Leitao * -EAGAIN result, arm poll upfront and skip 335*7746a6adSBreno Leitao * the initial transfer attempt. 336*7746a6adSBreno Leitao * 337*7746a6adSBreno Leitao * IORING_RECV_MULTISHOT Multishot recv. Sets IORING_CQE_F_MORE if 338*7746a6adSBreno Leitao * the handler will continue to report 339*7746a6adSBreno Leitao * CQEs on behalf of the same SQE. 340*7746a6adSBreno Leitao * 341*7746a6adSBreno Leitao * IORING_RECVSEND_FIXED_BUF Use registered buffers, the index is stored in 342*7746a6adSBreno Leitao * the buf_index field. 343*7746a6adSBreno Leitao * 344*7746a6adSBreno Leitao * IORING_SEND_ZC_REPORT_USAGE 345*7746a6adSBreno Leitao * If set, SEND[MSG]_ZC should report 346*7746a6adSBreno Leitao * the zerocopy usage in cqe.res 347*7746a6adSBreno Leitao * for the IORING_CQE_F_NOTIF cqe. 348*7746a6adSBreno Leitao * 0 is reported if zerocopy was actually possible. 349*7746a6adSBreno Leitao * IORING_NOTIF_USAGE_ZC_COPIED if data was copied 350*7746a6adSBreno Leitao * (at least partially). 351*7746a6adSBreno Leitao */ 352*7746a6adSBreno Leitao #define IORING_RECVSEND_POLL_FIRST (1U << 0) 353*7746a6adSBreno Leitao #define IORING_RECV_MULTISHOT (1U << 1) 354*7746a6adSBreno Leitao #define IORING_RECVSEND_FIXED_BUF (1U << 2) 355*7746a6adSBreno Leitao #define IORING_SEND_ZC_REPORT_USAGE (1U << 3) 356*7746a6adSBreno Leitao 357*7746a6adSBreno Leitao /* 358*7746a6adSBreno Leitao * cqe.res for IORING_CQE_F_NOTIF if 359*7746a6adSBreno Leitao * IORING_SEND_ZC_REPORT_USAGE was requested 360*7746a6adSBreno Leitao * 361*7746a6adSBreno Leitao * It should be treated as a flag, all other 362*7746a6adSBreno Leitao * bits of cqe.res should be treated as reserved! 363*7746a6adSBreno Leitao */ 364*7746a6adSBreno Leitao #define IORING_NOTIF_USAGE_ZC_COPIED (1U << 31) 365*7746a6adSBreno Leitao 366*7746a6adSBreno Leitao /* 367*7746a6adSBreno Leitao * accept flags stored in sqe->ioprio 368*7746a6adSBreno Leitao */ 369*7746a6adSBreno Leitao #define IORING_ACCEPT_MULTISHOT (1U << 0) 370*7746a6adSBreno Leitao 371*7746a6adSBreno Leitao /* 372*7746a6adSBreno Leitao * IORING_OP_MSG_RING command types, stored in sqe->addr 373*7746a6adSBreno Leitao */ 374*7746a6adSBreno Leitao enum { 375*7746a6adSBreno Leitao IORING_MSG_DATA, /* pass sqe->len as 'res' and off as user_data */ 376*7746a6adSBreno Leitao IORING_MSG_SEND_FD, /* send a registered fd to another ring */ 377*7746a6adSBreno Leitao }; 378*7746a6adSBreno Leitao 379*7746a6adSBreno Leitao /* 380*7746a6adSBreno Leitao * IORING_OP_MSG_RING flags (sqe->msg_ring_flags) 381*7746a6adSBreno Leitao * 382*7746a6adSBreno Leitao * IORING_MSG_RING_CQE_SKIP Don't post a CQE to the target ring. Not 383*7746a6adSBreno Leitao * applicable for IORING_MSG_DATA, obviously. 384*7746a6adSBreno Leitao */ 385*7746a6adSBreno Leitao #define IORING_MSG_RING_CQE_SKIP (1U << 0) 386*7746a6adSBreno Leitao /* Pass through the flags from sqe->file_index to cqe->flags */ 387*7746a6adSBreno Leitao #define IORING_MSG_RING_FLAGS_PASS (1U << 1) 388*7746a6adSBreno Leitao 389*7746a6adSBreno Leitao /* 390*7746a6adSBreno Leitao * IO completion data structure (Completion Queue Entry) 391*7746a6adSBreno Leitao */ 392*7746a6adSBreno Leitao struct io_uring_cqe { 393*7746a6adSBreno Leitao __u64 user_data; /* sqe->data submission passed back */ 394*7746a6adSBreno Leitao __s32 res; /* result code for this event */ 395*7746a6adSBreno Leitao __u32 flags; 396*7746a6adSBreno Leitao 397*7746a6adSBreno Leitao /* 398*7746a6adSBreno Leitao * If the ring is initialized with IORING_SETUP_CQE32, then this field 399*7746a6adSBreno Leitao * contains 16-bytes of padding, doubling the size of the CQE. 400*7746a6adSBreno Leitao */ 401*7746a6adSBreno Leitao __u64 big_cqe[]; 402*7746a6adSBreno Leitao }; 403*7746a6adSBreno Leitao 404*7746a6adSBreno Leitao /* 405*7746a6adSBreno Leitao * cqe->flags 406*7746a6adSBreno Leitao * 407*7746a6adSBreno Leitao * IORING_CQE_F_BUFFER If set, the upper 16 bits are the buffer ID 408*7746a6adSBreno Leitao * IORING_CQE_F_MORE If set, parent SQE will generate more CQE entries 409*7746a6adSBreno Leitao * IORING_CQE_F_SOCK_NONEMPTY If set, more data to read after socket recv 410*7746a6adSBreno Leitao * IORING_CQE_F_NOTIF Set for notification CQEs. Can be used to distinct 411*7746a6adSBreno Leitao * them from sends. 412*7746a6adSBreno Leitao */ 413*7746a6adSBreno Leitao #define IORING_CQE_F_BUFFER (1U << 0) 414*7746a6adSBreno Leitao #define IORING_CQE_F_MORE (1U << 1) 415*7746a6adSBreno Leitao #define IORING_CQE_F_SOCK_NONEMPTY (1U << 2) 416*7746a6adSBreno Leitao #define IORING_CQE_F_NOTIF (1U << 3) 417*7746a6adSBreno Leitao 418*7746a6adSBreno Leitao enum { 419*7746a6adSBreno Leitao IORING_CQE_BUFFER_SHIFT = 16, 420*7746a6adSBreno Leitao }; 421*7746a6adSBreno Leitao 422*7746a6adSBreno Leitao /* 423*7746a6adSBreno Leitao * Magic offsets for the application to mmap the data it needs 424*7746a6adSBreno Leitao */ 425*7746a6adSBreno Leitao #define IORING_OFF_SQ_RING 0ULL 426*7746a6adSBreno Leitao #define IORING_OFF_CQ_RING 0x8000000ULL 427*7746a6adSBreno Leitao #define IORING_OFF_SQES 0x10000000ULL 428*7746a6adSBreno Leitao #define IORING_OFF_PBUF_RING 0x80000000ULL 429*7746a6adSBreno Leitao #define IORING_OFF_PBUF_SHIFT 16 430*7746a6adSBreno Leitao #define IORING_OFF_MMAP_MASK 0xf8000000ULL 431*7746a6adSBreno Leitao 432*7746a6adSBreno Leitao /* 433*7746a6adSBreno Leitao * Filled with the offset for mmap(2) 434*7746a6adSBreno Leitao */ 435*7746a6adSBreno Leitao struct io_sqring_offsets { 436*7746a6adSBreno Leitao __u32 head; 437*7746a6adSBreno Leitao __u32 tail; 438*7746a6adSBreno Leitao __u32 ring_mask; 439*7746a6adSBreno Leitao __u32 ring_entries; 440*7746a6adSBreno Leitao __u32 flags; 441*7746a6adSBreno Leitao __u32 dropped; 442*7746a6adSBreno Leitao __u32 array; 443*7746a6adSBreno Leitao __u32 resv1; 444*7746a6adSBreno Leitao __u64 user_addr; 445*7746a6adSBreno Leitao }; 446*7746a6adSBreno Leitao 447*7746a6adSBreno Leitao /* 448*7746a6adSBreno Leitao * sq_ring->flags 449*7746a6adSBreno Leitao */ 450*7746a6adSBreno Leitao #define IORING_SQ_NEED_WAKEUP (1U << 0) /* needs io_uring_enter wakeup */ 451*7746a6adSBreno Leitao #define IORING_SQ_CQ_OVERFLOW (1U << 1) /* CQ ring is overflown */ 452*7746a6adSBreno Leitao #define IORING_SQ_TASKRUN (1U << 2) /* task should enter the kernel */ 453*7746a6adSBreno Leitao 454*7746a6adSBreno Leitao struct io_cqring_offsets { 455*7746a6adSBreno Leitao __u32 head; 456*7746a6adSBreno Leitao __u32 tail; 457*7746a6adSBreno Leitao __u32 ring_mask; 458*7746a6adSBreno Leitao __u32 ring_entries; 459*7746a6adSBreno Leitao __u32 overflow; 460*7746a6adSBreno Leitao __u32 cqes; 461*7746a6adSBreno Leitao __u32 flags; 462*7746a6adSBreno Leitao __u32 resv1; 463*7746a6adSBreno Leitao __u64 user_addr; 464*7746a6adSBreno Leitao }; 465*7746a6adSBreno Leitao 466*7746a6adSBreno Leitao /* 467*7746a6adSBreno Leitao * cq_ring->flags 468*7746a6adSBreno Leitao */ 469*7746a6adSBreno Leitao 470*7746a6adSBreno Leitao /* disable eventfd notifications */ 471*7746a6adSBreno Leitao #define IORING_CQ_EVENTFD_DISABLED (1U << 0) 472*7746a6adSBreno Leitao 473*7746a6adSBreno Leitao /* 474*7746a6adSBreno Leitao * io_uring_enter(2) flags 475*7746a6adSBreno Leitao */ 476*7746a6adSBreno Leitao #define IORING_ENTER_GETEVENTS (1U << 0) 477*7746a6adSBreno Leitao #define IORING_ENTER_SQ_WAKEUP (1U << 1) 478*7746a6adSBreno Leitao #define IORING_ENTER_SQ_WAIT (1U << 2) 479*7746a6adSBreno Leitao #define IORING_ENTER_EXT_ARG (1U << 3) 480*7746a6adSBreno Leitao #define IORING_ENTER_REGISTERED_RING (1U << 4) 481*7746a6adSBreno Leitao 482*7746a6adSBreno Leitao /* 483*7746a6adSBreno Leitao * Passed in for io_uring_setup(2). Copied back with updated info on success 484*7746a6adSBreno Leitao */ 485*7746a6adSBreno Leitao struct io_uring_params { 486*7746a6adSBreno Leitao __u32 sq_entries; 487*7746a6adSBreno Leitao __u32 cq_entries; 488*7746a6adSBreno Leitao __u32 flags; 489*7746a6adSBreno Leitao __u32 sq_thread_cpu; 490*7746a6adSBreno Leitao __u32 sq_thread_idle; 491*7746a6adSBreno Leitao __u32 features; 492*7746a6adSBreno Leitao __u32 wq_fd; 493*7746a6adSBreno Leitao __u32 resv[3]; 494*7746a6adSBreno Leitao struct io_sqring_offsets sq_off; 495*7746a6adSBreno Leitao struct io_cqring_offsets cq_off; 496*7746a6adSBreno Leitao }; 497*7746a6adSBreno Leitao 498*7746a6adSBreno Leitao /* 499*7746a6adSBreno Leitao * io_uring_params->features flags 500*7746a6adSBreno Leitao */ 501*7746a6adSBreno Leitao #define IORING_FEAT_SINGLE_MMAP (1U << 0) 502*7746a6adSBreno Leitao #define IORING_FEAT_NODROP (1U << 1) 503*7746a6adSBreno Leitao #define IORING_FEAT_SUBMIT_STABLE (1U << 2) 504*7746a6adSBreno Leitao #define IORING_FEAT_RW_CUR_POS (1U << 3) 505*7746a6adSBreno Leitao #define IORING_FEAT_CUR_PERSONALITY (1U << 4) 506*7746a6adSBreno Leitao #define IORING_FEAT_FAST_POLL (1U << 5) 507*7746a6adSBreno Leitao #define IORING_FEAT_POLL_32BITS (1U << 6) 508*7746a6adSBreno Leitao #define IORING_FEAT_SQPOLL_NONFIXED (1U << 7) 509*7746a6adSBreno Leitao #define IORING_FEAT_EXT_ARG (1U << 8) 510*7746a6adSBreno Leitao #define IORING_FEAT_NATIVE_WORKERS (1U << 9) 511*7746a6adSBreno Leitao #define IORING_FEAT_RSRC_TAGS (1U << 10) 512*7746a6adSBreno Leitao #define IORING_FEAT_CQE_SKIP (1U << 11) 513*7746a6adSBreno Leitao #define IORING_FEAT_LINKED_FILE (1U << 12) 514*7746a6adSBreno Leitao #define IORING_FEAT_REG_REG_RING (1U << 13) 515*7746a6adSBreno Leitao 516*7746a6adSBreno Leitao /* 517*7746a6adSBreno Leitao * io_uring_register(2) opcodes and arguments 518*7746a6adSBreno Leitao */ 519*7746a6adSBreno Leitao enum { 520*7746a6adSBreno Leitao IORING_REGISTER_BUFFERS = 0, 521*7746a6adSBreno Leitao IORING_UNREGISTER_BUFFERS = 1, 522*7746a6adSBreno Leitao IORING_REGISTER_FILES = 2, 523*7746a6adSBreno Leitao IORING_UNREGISTER_FILES = 3, 524*7746a6adSBreno Leitao IORING_REGISTER_EVENTFD = 4, 525*7746a6adSBreno Leitao IORING_UNREGISTER_EVENTFD = 5, 526*7746a6adSBreno Leitao IORING_REGISTER_FILES_UPDATE = 6, 527*7746a6adSBreno Leitao IORING_REGISTER_EVENTFD_ASYNC = 7, 528*7746a6adSBreno Leitao IORING_REGISTER_PROBE = 8, 529*7746a6adSBreno Leitao IORING_REGISTER_PERSONALITY = 9, 530*7746a6adSBreno Leitao IORING_UNREGISTER_PERSONALITY = 10, 531*7746a6adSBreno Leitao IORING_REGISTER_RESTRICTIONS = 11, 532*7746a6adSBreno Leitao IORING_REGISTER_ENABLE_RINGS = 12, 533*7746a6adSBreno Leitao 534*7746a6adSBreno Leitao /* extended with tagging */ 535*7746a6adSBreno Leitao IORING_REGISTER_FILES2 = 13, 536*7746a6adSBreno Leitao IORING_REGISTER_FILES_UPDATE2 = 14, 537*7746a6adSBreno Leitao IORING_REGISTER_BUFFERS2 = 15, 538*7746a6adSBreno Leitao IORING_REGISTER_BUFFERS_UPDATE = 16, 539*7746a6adSBreno Leitao 540*7746a6adSBreno Leitao /* set/clear io-wq thread affinities */ 541*7746a6adSBreno Leitao IORING_REGISTER_IOWQ_AFF = 17, 542*7746a6adSBreno Leitao IORING_UNREGISTER_IOWQ_AFF = 18, 543*7746a6adSBreno Leitao 544*7746a6adSBreno Leitao /* set/get max number of io-wq workers */ 545*7746a6adSBreno Leitao IORING_REGISTER_IOWQ_MAX_WORKERS = 19, 546*7746a6adSBreno Leitao 547*7746a6adSBreno Leitao /* register/unregister io_uring fd with the ring */ 548*7746a6adSBreno Leitao IORING_REGISTER_RING_FDS = 20, 549*7746a6adSBreno Leitao IORING_UNREGISTER_RING_FDS = 21, 550*7746a6adSBreno Leitao 551*7746a6adSBreno Leitao /* register ring based provide buffer group */ 552*7746a6adSBreno Leitao IORING_REGISTER_PBUF_RING = 22, 553*7746a6adSBreno Leitao IORING_UNREGISTER_PBUF_RING = 23, 554*7746a6adSBreno Leitao 555*7746a6adSBreno Leitao /* sync cancelation API */ 556*7746a6adSBreno Leitao IORING_REGISTER_SYNC_CANCEL = 24, 557*7746a6adSBreno Leitao 558*7746a6adSBreno Leitao /* register a range of fixed file slots for automatic slot allocation */ 559*7746a6adSBreno Leitao IORING_REGISTER_FILE_ALLOC_RANGE = 25, 560*7746a6adSBreno Leitao 561*7746a6adSBreno Leitao /* this goes last */ 562*7746a6adSBreno Leitao IORING_REGISTER_LAST, 563*7746a6adSBreno Leitao 564*7746a6adSBreno Leitao /* flag added to the opcode to use a registered ring fd */ 565*7746a6adSBreno Leitao IORING_REGISTER_USE_REGISTERED_RING = 1U << 31 566*7746a6adSBreno Leitao }; 567*7746a6adSBreno Leitao 568*7746a6adSBreno Leitao /* io-wq worker categories */ 569*7746a6adSBreno Leitao enum { 570*7746a6adSBreno Leitao IO_WQ_BOUND, 571*7746a6adSBreno Leitao IO_WQ_UNBOUND, 572*7746a6adSBreno Leitao }; 573*7746a6adSBreno Leitao 574*7746a6adSBreno Leitao /* deprecated, see struct io_uring_rsrc_update */ 575*7746a6adSBreno Leitao struct io_uring_files_update { 576*7746a6adSBreno Leitao __u32 offset; 577*7746a6adSBreno Leitao __u32 resv; 578*7746a6adSBreno Leitao __aligned_u64 /* __s32 * */ fds; 579*7746a6adSBreno Leitao }; 580*7746a6adSBreno Leitao 581*7746a6adSBreno Leitao /* 582*7746a6adSBreno Leitao * Register a fully sparse file space, rather than pass in an array of all 583*7746a6adSBreno Leitao * -1 file descriptors. 584*7746a6adSBreno Leitao */ 585*7746a6adSBreno Leitao #define IORING_RSRC_REGISTER_SPARSE (1U << 0) 586*7746a6adSBreno Leitao 587*7746a6adSBreno Leitao struct io_uring_rsrc_register { 588*7746a6adSBreno Leitao __u32 nr; 589*7746a6adSBreno Leitao __u32 flags; 590*7746a6adSBreno Leitao __u64 resv2; 591*7746a6adSBreno Leitao __aligned_u64 data; 592*7746a6adSBreno Leitao __aligned_u64 tags; 593*7746a6adSBreno Leitao }; 594*7746a6adSBreno Leitao 595*7746a6adSBreno Leitao struct io_uring_rsrc_update { 596*7746a6adSBreno Leitao __u32 offset; 597*7746a6adSBreno Leitao __u32 resv; 598*7746a6adSBreno Leitao __aligned_u64 data; 599*7746a6adSBreno Leitao }; 600*7746a6adSBreno Leitao 601*7746a6adSBreno Leitao struct io_uring_rsrc_update2 { 602*7746a6adSBreno Leitao __u32 offset; 603*7746a6adSBreno Leitao __u32 resv; 604*7746a6adSBreno Leitao __aligned_u64 data; 605*7746a6adSBreno Leitao __aligned_u64 tags; 606*7746a6adSBreno Leitao __u32 nr; 607*7746a6adSBreno Leitao __u32 resv2; 608*7746a6adSBreno Leitao }; 609*7746a6adSBreno Leitao 610*7746a6adSBreno Leitao /* Skip updating fd indexes set to this value in the fd table */ 611*7746a6adSBreno Leitao #define IORING_REGISTER_FILES_SKIP (-2) 612*7746a6adSBreno Leitao 613*7746a6adSBreno Leitao #define IO_URING_OP_SUPPORTED (1U << 0) 614*7746a6adSBreno Leitao 615*7746a6adSBreno Leitao struct io_uring_probe_op { 616*7746a6adSBreno Leitao __u8 op; 617*7746a6adSBreno Leitao __u8 resv; 618*7746a6adSBreno Leitao __u16 flags; /* IO_URING_OP_* flags */ 619*7746a6adSBreno Leitao __u32 resv2; 620*7746a6adSBreno Leitao }; 621*7746a6adSBreno Leitao 622*7746a6adSBreno Leitao struct io_uring_probe { 623*7746a6adSBreno Leitao __u8 last_op; /* last opcode supported */ 624*7746a6adSBreno Leitao __u8 ops_len; /* length of ops[] array below */ 625*7746a6adSBreno Leitao __u16 resv; 626*7746a6adSBreno Leitao __u32 resv2[3]; 627*7746a6adSBreno Leitao struct io_uring_probe_op ops[]; 628*7746a6adSBreno Leitao }; 629*7746a6adSBreno Leitao 630*7746a6adSBreno Leitao struct io_uring_restriction { 631*7746a6adSBreno Leitao __u16 opcode; 632*7746a6adSBreno Leitao union { 633*7746a6adSBreno Leitao __u8 register_op; /* IORING_RESTRICTION_REGISTER_OP */ 634*7746a6adSBreno Leitao __u8 sqe_op; /* IORING_RESTRICTION_SQE_OP */ 635*7746a6adSBreno Leitao __u8 sqe_flags; /* IORING_RESTRICTION_SQE_FLAGS_* */ 636*7746a6adSBreno Leitao }; 637*7746a6adSBreno Leitao __u8 resv; 638*7746a6adSBreno Leitao __u32 resv2[3]; 639*7746a6adSBreno Leitao }; 640*7746a6adSBreno Leitao 641*7746a6adSBreno Leitao struct io_uring_buf { 642*7746a6adSBreno Leitao __u64 addr; 643*7746a6adSBreno Leitao __u32 len; 644*7746a6adSBreno Leitao __u16 bid; 645*7746a6adSBreno Leitao __u16 resv; 646*7746a6adSBreno Leitao }; 647*7746a6adSBreno Leitao 648*7746a6adSBreno Leitao struct io_uring_buf_ring { 649*7746a6adSBreno Leitao union { 650*7746a6adSBreno Leitao /* 651*7746a6adSBreno Leitao * To avoid spilling into more pages than we need to, the 652*7746a6adSBreno Leitao * ring tail is overlaid with the io_uring_buf->resv field. 653*7746a6adSBreno Leitao */ 654*7746a6adSBreno Leitao struct { 655*7746a6adSBreno Leitao __u64 resv1; 656*7746a6adSBreno Leitao __u32 resv2; 657*7746a6adSBreno Leitao __u16 resv3; 658*7746a6adSBreno Leitao __u16 tail; 659*7746a6adSBreno Leitao }; 660*7746a6adSBreno Leitao __DECLARE_FLEX_ARRAY(struct io_uring_buf, bufs); 661*7746a6adSBreno Leitao }; 662*7746a6adSBreno Leitao }; 663*7746a6adSBreno Leitao 664*7746a6adSBreno Leitao /* 665*7746a6adSBreno Leitao * Flags for IORING_REGISTER_PBUF_RING. 666*7746a6adSBreno Leitao * 667*7746a6adSBreno Leitao * IOU_PBUF_RING_MMAP: If set, kernel will allocate the memory for the ring. 668*7746a6adSBreno Leitao * The application must not set a ring_addr in struct 669*7746a6adSBreno Leitao * io_uring_buf_reg, instead it must subsequently call 670*7746a6adSBreno Leitao * mmap(2) with the offset set as: 671*7746a6adSBreno Leitao * IORING_OFF_PBUF_RING | (bgid << IORING_OFF_PBUF_SHIFT) 672*7746a6adSBreno Leitao * to get a virtual mapping for the ring. 673*7746a6adSBreno Leitao */ 674*7746a6adSBreno Leitao enum { 675*7746a6adSBreno Leitao IOU_PBUF_RING_MMAP = 1, 676*7746a6adSBreno Leitao }; 677*7746a6adSBreno Leitao 678*7746a6adSBreno Leitao /* argument for IORING_(UN)REGISTER_PBUF_RING */ 679*7746a6adSBreno Leitao struct io_uring_buf_reg { 680*7746a6adSBreno Leitao __u64 ring_addr; 681*7746a6adSBreno Leitao __u32 ring_entries; 682*7746a6adSBreno Leitao __u16 bgid; 683*7746a6adSBreno Leitao __u16 flags; 684*7746a6adSBreno Leitao __u64 resv[3]; 685*7746a6adSBreno Leitao }; 686*7746a6adSBreno Leitao 687*7746a6adSBreno Leitao /* 688*7746a6adSBreno Leitao * io_uring_restriction->opcode values 689*7746a6adSBreno Leitao */ 690*7746a6adSBreno Leitao enum { 691*7746a6adSBreno Leitao /* Allow an io_uring_register(2) opcode */ 692*7746a6adSBreno Leitao IORING_RESTRICTION_REGISTER_OP = 0, 693*7746a6adSBreno Leitao 694*7746a6adSBreno Leitao /* Allow an sqe opcode */ 695*7746a6adSBreno Leitao IORING_RESTRICTION_SQE_OP = 1, 696*7746a6adSBreno Leitao 697*7746a6adSBreno Leitao /* Allow sqe flags */ 698*7746a6adSBreno Leitao IORING_RESTRICTION_SQE_FLAGS_ALLOWED = 2, 699*7746a6adSBreno Leitao 700*7746a6adSBreno Leitao /* Require sqe flags (these flags must be set on each submission) */ 701*7746a6adSBreno Leitao IORING_RESTRICTION_SQE_FLAGS_REQUIRED = 3, 702*7746a6adSBreno Leitao 703*7746a6adSBreno Leitao IORING_RESTRICTION_LAST 704*7746a6adSBreno Leitao }; 705*7746a6adSBreno Leitao 706*7746a6adSBreno Leitao struct io_uring_getevents_arg { 707*7746a6adSBreno Leitao __u64 sigmask; 708*7746a6adSBreno Leitao __u32 sigmask_sz; 709*7746a6adSBreno Leitao __u32 pad; 710*7746a6adSBreno Leitao __u64 ts; 711*7746a6adSBreno Leitao }; 712*7746a6adSBreno Leitao 713*7746a6adSBreno Leitao /* 714*7746a6adSBreno Leitao * Argument for IORING_REGISTER_SYNC_CANCEL 715*7746a6adSBreno Leitao */ 716*7746a6adSBreno Leitao struct io_uring_sync_cancel_reg { 717*7746a6adSBreno Leitao __u64 addr; 718*7746a6adSBreno Leitao __s32 fd; 719*7746a6adSBreno Leitao __u32 flags; 720*7746a6adSBreno Leitao struct __kernel_timespec timeout; 721*7746a6adSBreno Leitao __u8 opcode; 722*7746a6adSBreno Leitao __u8 pad[7]; 723*7746a6adSBreno Leitao __u64 pad2[3]; 724*7746a6adSBreno Leitao }; 725*7746a6adSBreno Leitao 726*7746a6adSBreno Leitao /* 727*7746a6adSBreno Leitao * Argument for IORING_REGISTER_FILE_ALLOC_RANGE 728*7746a6adSBreno Leitao * The range is specified as [off, off + len) 729*7746a6adSBreno Leitao */ 730*7746a6adSBreno Leitao struct io_uring_file_index_range { 731*7746a6adSBreno Leitao __u32 off; 732*7746a6adSBreno Leitao __u32 len; 733*7746a6adSBreno Leitao __u64 resv; 734*7746a6adSBreno Leitao }; 735*7746a6adSBreno Leitao 736*7746a6adSBreno Leitao struct io_uring_recvmsg_out { 737*7746a6adSBreno Leitao __u32 namelen; 738*7746a6adSBreno Leitao __u32 controllen; 739*7746a6adSBreno Leitao __u32 payloadlen; 740*7746a6adSBreno Leitao __u32 flags; 741*7746a6adSBreno Leitao }; 742*7746a6adSBreno Leitao 743*7746a6adSBreno Leitao /* 744*7746a6adSBreno Leitao * Argument for IORING_OP_URING_CMD when file is a socket 745*7746a6adSBreno Leitao */ 746*7746a6adSBreno Leitao enum { 747*7746a6adSBreno Leitao SOCKET_URING_OP_SIOCINQ = 0, 748*7746a6adSBreno Leitao SOCKET_URING_OP_SIOCOUTQ, 749*7746a6adSBreno Leitao SOCKET_URING_OP_GETSOCKOPT, 750*7746a6adSBreno Leitao SOCKET_URING_OP_SETSOCKOPT, 751*7746a6adSBreno Leitao }; 752*7746a6adSBreno Leitao 753*7746a6adSBreno Leitao #ifdef __cplusplus 754*7746a6adSBreno Leitao } 755*7746a6adSBreno Leitao #endif 756*7746a6adSBreno Leitao 757*7746a6adSBreno Leitao #endif 758