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[RFC,bpf-next,v4,1/6] bpf: define BPF_UPTR a new enumerator of btf_field_type.

Message ID 20240816191213.35573-2-thinker.li@gmail.com (mailing list archive)
State RFC
Delegated to: BPF
Headers show
Series Share user memory to BPF program through task storage map. | expand

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Commit Message

Kui-Feng Lee Aug. 16, 2024, 7:12 p.m. UTC 
Define BPF_UPTR, and modify functions that describe attributes of a field
type.

Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
---
 include/linux/bpf.h | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 9f35df07e86d..954e476b5605 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -203,6 +203,7 @@  enum btf_field_type {
 	BPF_GRAPH_ROOT = BPF_RB_ROOT | BPF_LIST_HEAD,
 	BPF_REFCOUNT   = (1 << 9),
 	BPF_WORKQUEUE  = (1 << 10),
+	BPF_UPTR       = (1 << 11),
 };
 
 typedef void (*btf_dtor_kfunc_t)(void *);
@@ -322,6 +323,8 @@  static inline const char *btf_field_type_name(enum btf_field_type type)
 		return "kptr";
 	case BPF_KPTR_PERCPU:
 		return "percpu_kptr";
+	case BPF_UPTR:
+		return "uptr";
 	case BPF_LIST_HEAD:
 		return "bpf_list_head";
 	case BPF_LIST_NODE:
@@ -350,6 +353,7 @@  static inline u32 btf_field_type_size(enum btf_field_type type)
 	case BPF_KPTR_UNREF:
 	case BPF_KPTR_REF:
 	case BPF_KPTR_PERCPU:
+	case BPF_UPTR:
 		return sizeof(u64);
 	case BPF_LIST_HEAD:
 		return sizeof(struct bpf_list_head);
@@ -379,6 +383,7 @@  static inline u32 btf_field_type_align(enum btf_field_type type)
 	case BPF_KPTR_UNREF:
 	case BPF_KPTR_REF:
 	case BPF_KPTR_PERCPU:
+	case BPF_UPTR:
 		return __alignof__(u64);
 	case BPF_LIST_HEAD:
 		return __alignof__(struct bpf_list_head);
@@ -419,6 +424,7 @@  static inline void bpf_obj_init_field(const struct btf_field *field, void *addr)
 	case BPF_KPTR_UNREF:
 	case BPF_KPTR_REF:
 	case BPF_KPTR_PERCPU:
+	case BPF_UPTR:
 		break;
 	default:
 		WARN_ON_ONCE(1);