common/sfc_efx/base: fix MAE match spec class comparison API

[dpdk.git] / drivers / common / sfc_efx / base / efx.h

diff --git a/drivers/common/sfc_efx/base/efx.h b/drivers/common/sfc_efx/base/efx.h
index 3b40e28..ccf9c7a 100644 (file)
--- a/drivers/common/sfc_efx/base/efx.h
+++ b/drivers/common/sfc_efx/base/efx.h
@@ -4283,6 +4283,11 @@ efx_mae_action_set_specs_equal(
  * Conduct a comparison to check whether two match specifications
  * of equal rule type (action / outer) and priority would map to
  * the very same rule class from the firmware's standpoint.
+ *
+ * For match specification fields that are not supported by firmware,
+ * the rule class only matches if the mask/value pairs for that field
+ * are equal. Clients should use efx_mae_match_spec_is_valid() before
+ * calling this API to detect usage of unsupported fields.
  */
 LIBEFX_API
 extern __checkReturn                   efx_rc_t