diff --git a/net/core/filter.c b/net/core/filter.c
index ab811293ae5d..7a2b67893afd 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -4128,9 +4128,13 @@ static const struct bpf_func_proto bpf_xdp_adjust_meta_proto = {
  *    bpf_redirect_info to actually enqueue the frame into a map type-specific
  *    bulk queue structure.
  *
- * 3. Before exiting its NAPI poll loop, the driver will call xdp_do_flush(),
- *    which will flush all the different bulk queues, thus completing the
- *    redirect.
+ * 3. Before exiting its NAPI poll loop, the driver will call
+ *    xdp_do_flush(), which will flush all the different bulk queues,
+ *    thus completing the redirect. Note that xdp_do_flush() must be
+ *    called before napi_complete_done() in the driver, as the
+ *    XDP_REDIRECT logic relies on being inside a single NAPI instance
+ *    through to the xdp_do_flush() call for RCU protection of all
+ *    in-kernel data structures.
  */
 /*
  * Pointers to the map entries will be kept around for this whole sequence of