Set stack as function of max call depth

Signed-off-by: Alan Jowett <[email protected]>
iovisor · Nov 13, 2024 · e594cf2 · e594cf2
1 parent 94f7a43
commit e594cf2
Showing 1 changed file with 8 additions and 7 deletions.
diff --git a/vm/inc/ubpf.h b/vm/inc/ubpf.h
@@ -39,11 +39,18 @@ extern "C"
 #define UBPF_MAX_INSTS 65536
 #endif
 
+/**
+ * @brief Default maximum number of nested calls in the VM.
+ */
+#if !defined(UBPF_MAX_CALL_DEPTH)
+#define UBPF_MAX_CALL_DEPTH 8
+#endif
+
 /**
  * @brief Default stack size for the eBPF program. Must be divisible by 16.
  */
 #if !defined(UBPF_EBPF_STACK_SIZE)
-#define UBPF_EBPF_STACK_SIZE (8 * 1024)
+#define UBPF_EBPF_STACK_SIZE (UBPF_MAX_CALL_DEPTH * 512)
 #endif
 
 /**
@@ -60,12 +67,6 @@ extern "C"
 
 #define UBPF_EBPF_NONVOLATILE_SIZE (sizeof(uint64_t) * 5)
 
-/**
- * @brief Default maximum number of nested calls in the VM.
- */
-#if !defined(UBPF_MAX_CALL_DEPTH)
-#define UBPF_MAX_CALL_DEPTH 10
-#endif
 
     /**
      * @brief Opaque type for a the uBPF VM.