1 files changed, 11 insertions, 0 deletions

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 866d53c33298..e4c5a1baa993 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -386,6 +386,17 @@ enum bpf_func_id {
          */
         BPF_FUNC_current_task_under_cgroup,
 
+        /**
+         * bpf_skb_change_tail(skb, len, flags)
+         * The helper will resize the skb to the given new size,
+         * to be used f.e. with control messages.
+         * @skb: pointer to skb
+         * @len: new skb length
+         * @flags: reserved
+         * Return: 0 on success or negative error
+         */
+        BPF_FUNC_skb_change_tail,
+
         __BPF_FUNC_MAX_ID,
 };