diff options
| author | Jens Axboe <axboe@kernel.dk> | 2019-04-19 22:38:09 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-07-09 23:32:14 +0300 |
| commit | aa1fa28fc73ea6b740ee7b62bf3b07141883dbb8 (patch) | |
| tree | 85963ae2cf72deda9bea41efd9492c94e9344b8b /include | |
| parent | 0fa03c624d8fc9932d0f27c39a9deca6a37e0e17 (diff) | |
| download | linux-aa1fa28fc73ea6b740ee7b62bf3b07141883dbb8.tar.xz | |
io_uring: add support for recvmsg()
This is done through IORING_OP_RECVMSG. This opcode uses the same
sqe->msg_flags that IORING_OP_SENDMSG added, and we pass in the
msghdr struct in the sqe->addr field as well.
We use MSG_DONTWAIT to force an inline fast path if recvmsg() doesn't
block, and punt to async execution if it would have.
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/socket.h | 3 | ||||
| -rw-r--r-- | include/uapi/linux/io_uring.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/socket.h b/include/linux/socket.h index 9d770ef3ced5..97523818cb14 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -378,6 +378,9 @@ extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, extern long __sys_sendmsg_sock(struct socket *sock, struct user_msghdr __user *msg, unsigned int flags); +extern long __sys_recvmsg_sock(struct socket *sock, + struct user_msghdr __user *msg, + unsigned int flags); /* helpers which do the actual work for syscalls */ extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size, diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index d74742d6269f..1e1652f25cc1 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -60,6 +60,7 @@ struct io_uring_sqe { #define IORING_OP_POLL_REMOVE 7 #define IORING_OP_SYNC_FILE_RANGE 8 #define IORING_OP_SENDMSG 9 +#define IORING_OP_RECVMSG 10 /* * sqe->fsync_flags |