1 files changed, 51 insertions, 0 deletions

diff --git a/recipes-kernel/intel-ethernet/files/force_disable_MDD.patch b/recipes-kernel/intel-ethernet/files/force_disable_MDD.patch
new file mode 100644
index 0000000..4a13a70
--- /dev/null
+++ b/recipes-kernel/intel-ethernet/files/force_disable_MDD.patch
@@ -0,0 +1,51 @@
+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;