Helper function bpf_rc_keydown
Definition
Copyright (c) 2015 The Libbpf Authors. All rights reserved.
This helper is used in programs implementing IR decoding, to report a successfully decoded key press with scancode, toggle value in the given protocol. The scancode will be translated to a keycode using the rc keymap, and reported as an input key down event. After a period a key up event is generated. This period can be extended by calling either bpf_rc_keydown() again with the same values, or calling bpf_rc_repeat().
Some protocols include a toggle bit, in case the button was released and pressed again between consecutive scancodes.
The ctx should point to the lirc sample as passed into the program.
The protocol is the decoded protocol number (see enum rc_proto for some predefined values).
This helper is only available is the kernel was compiled with the CONFIG_BPF_LIRC_MODE2 configuration option set to "y".
Returns
0
static long (* const bpf_rc_keydown)(void *ctx, __u32 protocol, __u64 scancode, __u32 toggle) = (void *) 78;
Usage
Docs could be improved
This part of the docs is incomplete, contributions are very welcome
Program types
This helper call can be used in the following program types:
Example
Docs could be improved
This part of the docs is incomplete, contributions are very welcome