Struct LoopbackBuilder 

#[non_exhaustive]
pub struct LoopbackBuilder {
    pub qlen: Option<u32>,
    pub bulk_buflen: Option<u32>,
}

Builder for USB loopback function.

None values will use the f_loopback module defaults. See drivers/usb/gadget/function/f_loopback.c.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

qlen: Option<u32>

Number of requests to allocate per endpoint.

bulk_buflen: Option<u32>

Size of each bulk transfer buffer in bytes.

Implementations

impl LoopbackBuilder

pub fn build(self) -> (Loopback, Handle)

Build the USB function.

The returned handle must be added to a USB gadget configuration.

Trait Implementations

impl Clone for LoopbackBuilder

fn clone(&self) -> LoopbackBuilder

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LoopbackBuilder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for LoopbackBuilder

fn default() -> LoopbackBuilder

Returns the “default value” for a type.