1 files changed, 75 insertions, 0 deletions
diff --git a/MdeModulePkg/Include/Library/NetLib.h b/MdeModulePkg/Include/Library/NetLib.h
index 215a2fb094..6bc3431855 100644
--- a/MdeModulePkg/Include/Library/NetLib.h
+++ b/MdeModulePkg/Include/Library/NetLib.h
@@ -809,4 +809,79 @@ NetPseudoHeadChecksum (
   IN UINT8                  Proto,
   IN UINT16                 Len
   );
+
+//
+// The debug level definition. This value is also used as the
+// syslog's servity level. Don't change it.
+//
+enum {
+  NETDEBUG_LEVEL_TRACE   = 5,
+  NETDEBUG_LEVEL_WARNING = 4,
+  NETDEBUG_LEVEL_ERROR   = 3,
+};
+
+#ifdef EFI_NETWORK_STACK_DEBUG
+
+//
+// The debug output expects the ASCII format string, Use %a to print ASCII
+// string, and %s to print UNICODE string. PrintArg must be enclosed in ().
+// For example: NET_DEBUG_TRACE ("Tcp", ("State transit to %a\n", Name));
+//
+#define NET_DEBUG_TRACE(Module, PrintArg) \
+  NetDebugOutput ( \
+    NETDEBUG_LEVEL_TRACE, \
+    Module, \
+    __FILE__, \
+    __LINE__, \
+    NetDebugASPrint PrintArg \
+    )
+
+#define NET_DEBUG_WARNING(Module, PrintArg) \
+  NetDebugOutput ( \
+    NETDEBUG_LEVEL_WARNING, \
+    Module, \
+    __FILE__, \
+    __LINE__, \
+    NetDebugASPrint PrintArg \
+    )
+
+#define NET_DEBUG_ERROR(Module, PrintArg) \
+  NetDebugOutput ( \
+    NETDEBUG_LEVEL_ERROR, \
+    Module, \
+    __FILE__, \
+    __LINE__, \
+    NetDebugASPrint PrintArg \
+    )
+
+#else
+#define NET_DEBUG_TRACE(Module, PrintString)
+#define NET_DEBUG_WARNING(Module, PrintString)
+#define NET_DEBUG_ERROR(Module, PrintString)
+#endif
+
+UINT8 *
+NetDebugASPrint (
+  UINT8                     *Format,
+  ...
+  );
+
+EFI_STATUS
+NetDebugOutput (
+  UINT32                    Level,
+  UINT8                     *Module,
+  UINT8                     *File,
+  UINT32                    Line,
+  UINT8                     *Message
+  );
+
+//
+// Network debug message is sent out as syslog.
+//
+enum {
+  NET_SYSLOG_FACILITY       = 16,             // Syslog local facility local use
+  NET_SYSLOG_PACKET_LEN     = 512,
+  NET_DEBUG_MSG_LEN         = 470,            // 512 - (ether+ip+udp head length)
+  NET_SYSLOG_TX_TIMEOUT     = 500 *1000 *10,  // 500ms
+};
 #endif