[PATCH bpf v2 3/4] bpf: Move cgroup iterator helpers to bpf.h

[Daniel Borkmann <daniel@xxxxxxxxxxxxx>]

Move them into bpf.h given we also need them in core code.

Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
---
 v1 -> v2:
  - Fixed kbuild bot for !CONFIG_CGROUP_BPF. Removing the
    defione for_each_cgroup_storage_type for this case I
    left for a future series.
  - Removed for_each_cgroup_storage_type_cond

 include/linux/bpf-cgroup.h |  5 -----
 include/linux/bpf.h        | 22 ++++++++++++++--------
 2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h
index 082ccd8ad96b..aedf573bdb42 100644
--- a/include/linux/bpf-cgroup.h
+++ b/include/linux/bpf-cgroup.h
@@ -77,9 +77,6 @@ to_cgroup_bpf_attach_type(enum bpf_attach_type attach_type)
 extern struct static_key_false cgroup_bpf_enabled_key[MAX_CGROUP_BPF_ATTACH_TYPE];
 #define cgroup_bpf_enabled(atype) static_branch_unlikely(&cgroup_bpf_enabled_key[atype])
 
-#define for_each_cgroup_storage_type(stype) \
-	for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
-
 struct bpf_cgroup_storage_map;
 
 struct bpf_storage_buffer {
@@ -510,8 +507,6 @@ static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
 				       kernel_optval) ({ 0; })
 
-#define for_each_cgroup_storage_type(stype) for (; false; )
-
 #endif /* CONFIG_CGROUP_BPF */
 
 #endif /* _BPF_CGROUP_H */
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index a87646cc5398..02aa41e301a5 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -208,6 +208,20 @@ enum btf_field_type {
 	BPF_RES_SPIN_LOCK = (1 << 12),
 };
 
+enum bpf_cgroup_storage_type {
+	BPF_CGROUP_STORAGE_SHARED,
+	BPF_CGROUP_STORAGE_PERCPU,
+	__BPF_CGROUP_STORAGE_MAX
+#define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX
+};
+
+#ifdef CONFIG_CGROUP_BPF
+# define for_each_cgroup_storage_type(stype) \
+	for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
+#else
+# define for_each_cgroup_storage_type(stype) for (; false; )
+#endif /* CONFIG_CGROUP_BPF */
+
 typedef void (*btf_dtor_kfunc_t)(void *);
 
 struct btf_field_kptr {
@@ -1085,14 +1099,6 @@ struct bpf_prog_offload {
 	u32			jited_len;
 };
 
-enum bpf_cgroup_storage_type {
-	BPF_CGROUP_STORAGE_SHARED,
-	BPF_CGROUP_STORAGE_PERCPU,
-	__BPF_CGROUP_STORAGE_MAX
-};
-
-#define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX
-
 /* The longest tracepoint has 12 args.
  * See include/trace/bpf_probe.h
  */
-- 
2.43.0