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io_uring: add support for IORING_OP_ACCEPT

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This allows an application to call accept4() in an async fashion. Like
other opcodes, we first try a non-blocking accept, then punt to async
context if we have to.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2019-10-17 14:42:58 -06:00
parent de2ea4b64b
commit 17f2fe35d0
2 changed files with 43 additions and 1 deletions
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7
include/uapi/linux/io_uring.h
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@@ -19,7 +19,10 @@ struct io_uring_sqe {
__u8 flags; /* IOSQE_ flags */
__u16 ioprio; /* ioprio for the request */
__s32 fd; /* file descriptor to do IO on */
__u64 off; /* offset into file */
union {
__u64 off; /* offset into file */
__u64 addr2;
};
__u64 addr; /* pointer to buffer or iovecs */
__u32 len; /* buffer size or number of iovecs */
union {
@@ -29,6 +32,7 @@ struct io_uring_sqe {
__u32 sync_range_flags;
__u32 msg_flags;
__u32 timeout_flags;
__u32 accept_flags;
};
__u64 user_data; /* data to be passed back at completion time */
union {
@@ -65,6 +69,7 @@ struct io_uring_sqe {
#define IORING_OP_RECVMSG 10
#define IORING_OP_TIMEOUT 11
#define IORING_OP_TIMEOUT_REMOVE 12
#define IORING_OP_ACCEPT 13
/*
* sqe->fsync_flags