From 22e58fa60c1ae1802946d80df9f94f94855f15f1 Mon Sep 17 00:00:00 2001
From: Dragos Ciprian Nedelcu <Dragos.Ciprian.Nedelcu@enea.com>
Date: Thu, 25 Feb 2021 09:48:09 +0100
Subject: [PATCH] Force MDD disabled in ixgbe driver

Set default value for Malicious Driver Detection to disabled
in ixgbe driver. Also prevent MDD from being enabled.

Signed-off-by: Dragos Ciprian Nedelcu <Dragos.Ciprian.Nedelcu@enea.com>
Change-Id: I84fc98070b376814549048f307032ed0bd355bc9

Index: src/ixgbe_param.c
===================================================================
--- src.orig/ixgbe_param.c
+++ src/ixgbe_param.c
@@ -289,13 +289,13 @@ IXGBE_PARAM(FCoE, "Disable or enable FCo
  *
  * Default Value: 1
  */
-IXGBE_PARAM(MDD, "Malicious Driver Detection: (0,1), default 1 = on");
+IXGBE_PARAM(MDD, "Malicious Driver Detection: (0,1), default 0 = off");
 
 /* Enable/disable Large Receive Offload
  *
  * Valid Values: 0(off), 1(on)
  *
- * Default Value: 1
+ * Default Value: 0
  */
 IXGBE_PARAM(LRO, "Large Receive Offload (0,1), default 0 = off");
 
@@ -1232,8 +1232,8 @@ void ixgbe_check_options(struct ixgbe_ad
 		struct ixgbe_option opt = {
 			.type = enable_option,
 			.name = "Malicious Driver Detection",
-			.err  = "defaulting to Enabled",
-			.def  = OPTION_ENABLED,
+			.err  = "defaulting to Disabled",
+			.def  = OPTION_DISABLED,
 		};
 
 		switch (adapter->hw.mac.type) {
@@ -1258,6 +1258,8 @@ void ixgbe_check_options(struct ixgbe_ad
 				*aflags |= IXGBE_FLAG_MDD_ENABLED;
 			}
 #endif
+                        /* Force disable MDD */
+                        *aflags &= ~IXGBE_FLAG_MDD_ENABLED;
 			break;
 		default:
 			*aflags &= ~IXGBE_FLAG_MDD_ENABLED;