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-rw-r--r--v5/apf_interpreter.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/v5/apf_interpreter.h b/v5/apf_interpreter.h
index 2af71d1..461d3ee 100644
--- a/v5/apf_interpreter.h
+++ b/v5/apf_interpreter.h
@@ -33,7 +33,8 @@ uint32_t apf_version();
* Allocates a buffer for APF program to write the transmit packet.
*
* The implementations must always support allocating at least one 1500 bytes
- * buffer until it is effectively transmitted.
+ * buffer until it is effectively transmitted. Before passing a memory region
+ * back to the caller, the implementations must zero it out.
*
* The firmware is responsible for freeing everything that was allocated by APF.
* It is OK if the firmware decides only to limit allocations to at most one