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BACKPORT: bpf: Add base proto function for cgroup-bpf programs

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Currently kernel/bpf/cgroup.c contains only one program type and one
proto function cgroup_dev_func_proto(). It'd be useful to have base
proto function that can be reused for new cgroup-bpf program types
coming soon.

Introduce cgroup_base_func_proto().

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrey Ignatov
2025-02-18 19:27:10 +00:00
committed by TechPanelGM
parent 51233da9ef
commit c6ed9aa242
1 changed files with 7 additions and 1 deletions
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8
kernel/bpf/cgroup.c
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@@ -664,7 +664,7 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
EXPORT_SYMBOL(__cgroup_bpf_check_dev_permission);
static const struct bpf_func_proto *
cgroup_dev_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
cgroup_base_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
{
switch (func_id) {
case BPF_FUNC_map_lookup_elem:
@@ -685,6 +685,12 @@ cgroup_dev_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
}
}
static const struct bpf_func_proto *
cgroup_dev_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
{
return cgroup_base_func_proto(func_id, prog);
}
static bool cgroup_dev_is_valid_access(int off, int size,
enum bpf_access_type type,
const struct bpf_prog *prog,