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Command ops are like ioctl that set or get values in simple way. Signed-off-by: Sidong Yang --- samples/rust/rust_misc_device.rs | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/samples/rust/rust_misc_device.rs b/samples/rust/rust_misc_device.rs index c881fd6dbd08..cd0e578231d2 100644 --- a/samples/rust/rust_misc_device.rs +++ b/samples/rust/rust_misc_device.rs @@ -101,6 +101,7 @@ c_str, device::Device, fs::File, + io_uring::IoUringCmd, ioctl::{_IO, _IOC_SIZE, _IOR, _IOW}, miscdevice::{MiscDevice, MiscDeviceOptions, MiscDeviceRegistration}, new_mutex, @@ -114,6 +115,9 @@ const RUST_MISC_DEV_GET_VALUE: u32 = _IOR::('|' as u32, 0x81); const RUST_MISC_DEV_SET_VALUE: u32 = _IOW::('|' as u32, 0x82); +const RUST_MISC_DEV_URING_CMD_SET_VALUE: u32 = 0x83; +const RUST_MISC_DEV_URING_CMD_GET_VALUE: u32 = 0x84; + module! { type: RustMiscDeviceModule, name: "rust_misc_device", @@ -190,6 +194,32 @@ fn ioctl(me: Pin<&RustMiscDevice>, _file: &File, cmd: u32, arg: usize) -> Result Ok(0) } + + fn uring_cmd( + me: Pin<&RustMiscDevice>, + _file: &File, + io_uring_cmd: &IoUringCmd, + _issue_flags: u32, + ) -> Result { + dev_info!(me.dev, "UringCmd Rust Misc Device Sample\n"); + let cmd = io_uring_cmd.cmd_op(); + let cmd_data = io_uring_cmd.sqe().cmd_data().as_ptr() as *const usize; + let addr = unsafe { *cmd_data }; + + match cmd { + RUST_MISC_DEV_URING_CMD_SET_VALUE => { + me.set_value(UserSlice::new(addr, 8).reader())?; + } + RUST_MISC_DEV_URING_CMD_GET_VALUE => { + me.get_value(UserSlice::new(addr, 8).writer())?; + } + _ => { + dev_err!(me.dev, "-> uring_cmd not recognised: {}\n", cmd); + return Err(ENOTTY); + } + } + Ok(0) + } } #[pinned_drop] -- 2.43.0