diff --git a/net/core/filter.c b/net/core/filter.c
index 9c3eada5c86c..a47dc5b9dad4 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -6157,6 +6157,8 @@ cg_skb_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 #ifdef CONFIG_SOCK_CGROUP_DATA
 	case BPF_FUNC_skb_cgroup_id:
 		return &bpf_skb_cgroup_id_proto;
+	case BPF_FUNC_skb_ancestor_cgroup_id:
+		return &bpf_skb_ancestor_cgroup_id_proto;
 #endif
 #ifdef CONFIG_INET
 	case BPF_FUNC_sk_lookup_tcp: