diff options
| author |   Sean Young <sean@mess.org> | 2018-12-06 13:01:03 +0000 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2018-12-09 14:37:18 -0800 |
| commit | 01d3240a04f4c09392e13c77b54d4423ebce2d72 (patch) | |
| tree | 429aa466773d2210b59d0b5eaa68c418b211aafd /include | |
| parent | Merge branch 'bpf_line_info' (diff) | |
| download | linux-dev-01d3240a04f4c09392e13c77b54d4423ebce2d72.tar.xz linux-dev-01d3240a04f4c09392e13c77b54d4423ebce2d72.zip | |
media: bpf: add bpf function to report mouse movement
Some IR remotes have a directional pad or other pointer-like thing that
can be used as a mouse. Make it possible to decode these types of IR
protocols in BPF.
Cc: netdev@vger.kernel.org
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/bpf.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 7a66db8d15d5..1bee1135866a 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -2301,6 +2301,20 @@ union bpf_attr { * payload and/or *pop* value being to large. * Return * 0 on success, or a negative error in case of failure. + * + * int bpf_rc_pointer_rel(void *ctx, s32 rel_x, s32 rel_y) + * Description + * This helper is used in programs implementing IR decoding, to + * report a successfully decoded pointer movement. + * + * The *ctx* should point to the lirc sample as passed into + * the program. + * + * This helper is only available is the kernel was compiled with + * the **CONFIG_BPF_LIRC_MODE2** configuration option set to + * "**y**". + * Return + * 0 */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -2394,7 +2408,8 @@ union bpf_attr { FN(map_pop_elem), \ FN(map_peek_elem), \ FN(msg_push_data), \ - FN(msg_pop_data), + FN(msg_pop_data), \ + FN(rc_pointer_rel), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call |