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-rw-r--r--host/include/uhd/rfnoc/noc_block_base.hpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/host/include/uhd/rfnoc/noc_block_base.hpp b/host/include/uhd/rfnoc/noc_block_base.hpp
index 67ca0fb37..0514849c4 100644
--- a/host/include/uhd/rfnoc/noc_block_base.hpp
+++ b/host/include/uhd/rfnoc/noc_block_base.hpp
@@ -199,6 +199,12 @@ protected:
* split-stream block.
*
* The default policy is DROP.
+ *
+ * Note: The MTU forwarding policy can only be set ONCE per instance of a
+ * noc_block_base. If an RFNoC block subclassing noc_block_base wants to
+ * modify the MTU forwarding policy, it would typically call this function
+ * in its constructor. Once set, however, the MTU forwarding policy cannot
+ * be changed.
*/
void set_mtu_forwarding_policy(const forwarding_policy_t policy);