bpf: allow zero-initializing hash map seed

[platform/kernel/linux-rpi.git] / include / uapi / linux / bpf.h

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 47d606d..8c01b89 100644 (file)
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -269,6 +269,9 @@ enum bpf_attach_type {
 /* Flag for stack_map, store build_id+offset instead of pointer */
 #define BPF_F_STACK_BUILD_ID   (1U << 5)
 
+/* Zero-initialize hash function seed. This should only be used for testing. */
+#define BPF_F_ZERO_SEED                (1U << 6)
+
 enum bpf_stack_build_id_status {
        /* user space need an empty entry to identify end of a trace */
        BPF_STACK_BUILD_ID_EMPTY = 0,