diff mbox series

[bpf-next,v3,03/16] bpf: Add helper bpf_map_has_dynptr_key()

Message ID 20250327083455.848708-4-houtao@huaweicloud.com (mailing list archive)
State New
Delegated to: BPF
Headers show
Series Support dynptr key for hash map | expand

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Commit Message

Hou Tao March 27, 2025, 8:34 a.m. UTC 
From: Hou Tao <houtao1@huawei.com>

Given that only bpf_dynptr is allowed in key_record, simply check
whether map->key_record is not NULL to detect if bpf_dynptr is enabled
in the map key.

Signed-off-by: Hou Tao <houtao1@huawei.com>
---
 include/linux/bpf.h | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index e25ff78f1fabf..737890e5c58b4 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -316,6 +316,11 @@  struct bpf_map {
 	s64 __percpu *elem_count;
 };
 
+static inline bool bpf_map_has_dynptr_key(const struct bpf_map *map)
+{
+	return !!map->key_record;
+}
+
 static inline const char *btf_field_type_name(enum btf_field_type type)
 {
 	switch (type) {