From 69573d675092b7e523f1d5dab6fec3bb5012b25e Mon Sep 17 00:00:00 2001
From: Grant Slater <git@firefishy.com>
Date: Fri, 21 Jul 2017 11:28:32 +0100
Subject: [PATCH] Intel 82574L NIC powersaving fix for tiamat hosts

---
 .../devices/files/default/fixeep-82574_83.sh  | 45 +++++++++++++++++++
 cookbooks/devices/recipes/default.rb          |  6 +++
 .../devices/templates/default/udev.rules.erb  |  3 ++
 3 files changed, 54 insertions(+)
 create mode 100755 cookbooks/devices/files/default/fixeep-82574_83.sh

diff --git a/cookbooks/devices/files/default/fixeep-82574_83.sh b/cookbooks/devices/files/default/fixeep-82574_83.sh
new file mode 100755
index 000000000..ca1ee4453
--- /dev/null
+++ b/cookbooks/devices/files/default/fixeep-82574_83.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+
+if [ -z "$1" ]; then
+	echo "Usage: $0 \<interface\>"
+	echo "	     i.e. $0 eth0"
+	exit 1
+fi
+
+if ! ifconfig $1 > /dev/null; then
+	exit 1
+fi
+
+bdf=$(ethtool -i $1 | grep "bus-info:" | awk '{print $2}')
+dev=$(lspci -s $bdf -x | grep "00: 86 80" | awk '{print "0x"$5$4$3$2}')
+
+case $dev in
+	0x10d38086)
+		echo "$1: is a \"82574L Gigabit Network Connection\""
+		;;
+	0x10f68086)
+		echo "$1: is a \"82574L Gigabit Network Connection\""
+		;;
+	0x150c8086)
+		echo "$1: is a \"82583V Gigabit Network Connection\""
+		;;
+	*)
+		echo "No appropriate hardware found for this fixup"
+		exit 1
+		;;
+esac
+
+echo "This fixup is applicable to your hardware"
+
+var=$(ethtool -e $1 | grep 0x0010 | awk '{print $16}')
+new=$(echo ${var:0:1}`echo ${var:1} | tr '014589bc' '2367abef'`)
+
+if [ ${var:0:1}${var:1} == $new ]; then
+	echo "Your eeprom is up to date, no changes were made"
+	exit 2
+fi
+
+echo "executing command: ethtool -E $1 magic $dev offset 0x1e value 0x$new"
+ethtool -E $1 magic $dev offset 0x1e value 0x$new
+
+echo "Change made. You *MUST* reboot your machine before changes take effect!"
diff --git a/cookbooks/devices/recipes/default.rb b/cookbooks/devices/recipes/default.rb
index 18719778d..79f24c9d7 100644
--- a/cookbooks/devices/recipes/default.rb
+++ b/cookbooks/devices/recipes/default.rb
@@ -17,6 +17,12 @@
 # limitations under the License.
 #
 
+cookbook_file "/usr/local/bin/fixeep-82574_83.sh" do
+  owner "root"
+  group "root"
+  mode 0o755
+end
+
 execute "udevadm-trigger" do
   action :nothing
   command "/sbin/udevadm trigger --action=add"
diff --git a/cookbooks/devices/templates/default/udev.rules.erb b/cookbooks/devices/templates/default/udev.rules.erb
index 114de0d51..e6d5a7e81 100644
--- a/cookbooks/devices/templates/default/udev.rules.erb
+++ b/cookbooks/devices/templates/default/udev.rules.erb
@@ -28,6 +28,9 @@ ACTION=="add", SUBSYSTEM=="block", ENV{ID_BUS}=="<%= device[:bus] %>", ENV{ID_SE
 # Disable scatter-gather offload for HP NC362i network controllers
 SUBSYSTEM=="net", ACTION=="add", ATTRS{vendor}=="0x8086", ATTRS{device}=="0x10c9", ATTRS{subsystem_vendor}=="0x103c", ATTRS{subsystem_device}=="0x323f", RUN+="/sbin/ethtool -K $name gso off tso off sg off gro off"
 
+# Fix Power Saving Bug on Intel 82574L network controller in Supermicro HPC machines
+SUBSYSTEM=="net", ACTION=="add", ATTRS{vendor}=="0x8086", ATTRS{device}=="0x10d3", ATTRS{subsystem_vendor}=="0x15d9", ATTRS{subsystem_device}=="0x10d3", RUN+="/usr/local/bin/fixeep-82574_83.sh $name"
+
 # Workaround unreliable Western Digital WD RE3/RE4 disks (ATA only)
 # Set sufficent Linux subsystem timeout
 ACTION=="add", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", ENV{ID_BUS}=="ata", ENV{ID_MODEL}=="WDC_WD1002FBYS-02A6B0", ATTR{device/timeout}="90"
-- 
2.43.2