mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
synced 2024-12-28 16:52:18 +00:00
fdb5c4531c
If the kernel is compiled with CONFIG_CGROUP_BPF not enabled, it is not
possible to attach, detach or query IR BPF programs to /dev/lircN devices,
making them impossible to use. For embedded devices, it should be possible
to use IR decoding without cgroups or CONFIG_CGROUP_BPF enabled.
This change requires some refactoring, since bpf_prog_{attach,detach,query}
functions are now always compiled, but their code paths for cgroups need
moving out. Rather than a #ifdef CONFIG_CGROUP_BPF in kernel/bpf/syscall.c,
moving them to kernel/bpf/cgroup.c and kernel/bpf/sockmap.c does not
require #ifdefs since that is already conditionally compiled.
Fixes: f4364dcfc8 ("media: rc: introduce BPF_PROG_LIRC_MODE2")
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
31 lines
698 B
C
31 lines
698 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _BPF_LIRC_H
|
|
#define _BPF_LIRC_H
|
|
|
|
#include <uapi/linux/bpf.h>
|
|
|
|
#ifdef CONFIG_BPF_LIRC_MODE2
|
|
int lirc_prog_attach(const union bpf_attr *attr, struct bpf_prog *prog);
|
|
int lirc_prog_detach(const union bpf_attr *attr);
|
|
int lirc_prog_query(const union bpf_attr *attr, union bpf_attr __user *uattr);
|
|
#else
|
|
static inline int lirc_prog_attach(const union bpf_attr *attr,
|
|
struct bpf_prog *prog)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int lirc_prog_detach(const union bpf_attr *attr)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int lirc_prog_query(const union bpf_attr *attr,
|
|
union bpf_attr __user *uattr)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif
|
|
|
|
#endif /* _BPF_LIRC_H */
|