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authorStanislav Fomichev <sdf@google.com>2022-08-23 15:25:51 -0700
committerAlexei Starovoitov <ast@kernel.org>2022-08-23 16:08:21 -0700
commitdea6a4e17013382b20717664ebf3d7cc405e0952 (patch)
tree63cec65b79079956824e270aa7455bac8450defe /include/linux
parent92ec1cc3784a2a8a7a62596dcec4f2224b85dcf4 (diff)
downloadlwn-dea6a4e17013382b20717664ebf3d7cc405e0952.tar.gz
lwn-dea6a4e17013382b20717664ebf3d7cc405e0952.zip
bpf: Introduce cgroup_{common,current}_func_proto
Split cgroup_base_func_proto into the following: * cgroup_common_func_proto - common helpers for all cgroup hooks * cgroup_current_func_proto - common helpers for all cgroup hooks running in the process context (== have meaningful 'current'). Move bpf_{g,s}et_retval and other cgroup-related helpers into kernel/bpf/cgroup.c so they closer to where they are being used. Signed-off-by: Stanislav Fomichev <sdf@google.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/r/20220823222555.523590-2-sdf@google.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/bpf-cgroup.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h
index 2bd1b5f8de9b..57e9e109257e 100644
--- a/include/linux/bpf-cgroup.h
+++ b/include/linux/bpf-cgroup.h
@@ -414,6 +414,11 @@ int cgroup_bpf_prog_detach(const union bpf_attr *attr,
int cgroup_bpf_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
int cgroup_bpf_prog_query(const union bpf_attr *attr,
union bpf_attr __user *uattr);
+
+const struct bpf_func_proto *
+cgroup_common_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
+const struct bpf_func_proto *
+cgroup_current_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
#else
static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
@@ -444,6 +449,18 @@ static inline int cgroup_bpf_prog_query(const union bpf_attr *attr,
return -EINVAL;
}
+static inline const struct bpf_func_proto *
+cgroup_common_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
+{
+ return NULL;
+}
+
+static inline const struct bpf_func_proto *
+cgroup_current_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
+{
+ return NULL;
+}
+
static inline int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux,
struct bpf_map *map) { return 0; }
static inline struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(