ixgbevf 2.16.1 upgrade for AWS EC2 SR-IOV "Enhanced Networking" on Ubuntu 14.04 (Trusty) LTS

ixgbevf-upgrade.sh

#!/usr/bin/env bash

set -e
set -o pipefail

# globals
readonly VERSION='2.16.1'
readonly DOWNLOAD_URL='http://sourceforge.net/projects/e1000/files/ixgbevf%20stable/2.16.1/ixgbevf-2.16.1.tar.gz'
readonly INSTALL_DIR='/usr/src' # must be here for dkms

function log {
  echo "[$(date +'%Y-%m-d %H:%M:%S')]:" $@
}

# 0
function install_dependencies {
  log 'installing dependencies'
  apt-get -q install -y dkms build-essential wget curl
}


# 1 - download sources to /tmp and move them to the install dir
function download_sources {
  log 'downloading the sources'
  # https://gist.github.com/CBarraford/8850424
  readonly local download_tar=`basename "${DOWNLOAD_URL}"`
  readonly local untared=`echo ${download_tar} | sed 's/.tar.gz//g'`
  cd /tmp
  if [[ ! -f "${download_tar}" ]]; then
    wget "${DOWNLOAD_URL}"
  fi
  if [[ ! -d "${untared}" ]]; then
    tar -xzf "${download_tar}"
  fi
  if [[ ! -d "${INSTALL_DIR}/${untared}" ]]; then
    cp -r "${untared}" "${INSTALL_DIR}"
  fi
  cd "${INSTALL_DIR}"/${untared}
}

# 2 - add dkms config
function add_dkms_config {
  log 'adding dkms config'
  # @see http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking.html#enhanced-networking-ubuntu
  cat > dkms.conf <<EOF
PACKAGE_NAME="ixgbevf"
PACKAGE_VERSION="${VERSION}"
CLEAN="cd src/; make clean"
MAKE="cd src/; make BUILD_KERNEL=\${kernelver}"
BUILT_MODULE_LOCATION[0]="src/"
BUILT_MODULE_NAME[0]="ixgbevf"
DEST_MODULE_LOCATION[0]="/updates"
DEST_MODULE_NAME[0]="ixgbevf"
AUTOINSTALL="yes"
EOF
}

# 3 - get patch file and apply it
function patch_sources {
  log 'patching the sources'
  readonly local patchfile='patch-ubuntu_14.04.1-ixgbevf-2.16.1-kcompat.h.patch'
  # @see https://gist.github.com/defila-aws/44946d3a3c0874fe3d17/raw/af64c3c589811a0d214059d1e4fd220a96eaebb3/patch-ubuntu_14.04.1-ixgbevf-2.16.1-kcompat.h.patch
  cat > "${patchfile}" <<EOF
--- /usr/src/ixgbevf-2.16.1/src/kcompat.h.orig  2015-02-03 18:34:22.901474028 +0000
+++ /usr/src/ixgbevf-2.16.1/src/kcompat.h       2015-02-03 18:35:32.577440102 +0000
@@ -3219,8 +3219,6 @@
 #define u64_stats_update_begin(a) do { } while(0)
 #define u64_stats_update_end(a) do { } while(0)
 #define u64_stats_fetch_begin(a) do { } while(0)
-#define u64_stats_fetch_retry_bh(a) (0)
-#define u64_stats_fetch_begin_bh(a) (0)

 #if (RHEL_RELEASE_CODE && RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(6,1))
 #define HAVE_8021P_SUPPORT
@@ -4174,8 +4172,8 @@

 /*****************************************************************************/
 #if ( LINUX_VERSION_CODE < KERNEL_VERSION(3,15,0) )
-#define u64_stats_fetch_begin_irq u64_stats_fetch_begin_bh
-#define u64_stats_fetch_retry_irq u64_stats_fetch_retry_bh
+#define u64_stats_fetch_begin_irq(a) (0)
+#define u64_stats_fetch_retry_irq(a, b) (0)
 #else
 #define HAVE_PTP_1588_CLOCK_PINS
 #define HAVE_NETDEV_PORT
EOF
  cd src
  set +e
  patch -p5 -N --dry-run --silent < "../${patchfile}" 2>/dev/null
  readonly local ret_val=$?
  set -e
  if [[ $ret_val -eq 0 ]]; then
    patch -p5 < "../${patchfile}"
  fi
}

# 4 - build / install
function build_module {
  log 'building the module'
  readonly local installed=`dkms status -m ixgbevf -v ${VERSION}`
  if [[ ! "${installed}" =~ 'installed' ]]; then
    dkms add -m ixgbevf -v ${VERSION}
    dkms build -m ixgbevf -v ${VERSION}
    dkms install -m ixgbevf -v ${VERSION}
  fi
  modprobe ixgbevf
  update-initramfs -c -k all
  echo "options ixgbevf InterruptThrottleRate=1,1,1,1,1,1,1,1" > /etc/modprobe.d/ixgbevf.conf
}

# 5 - check that it worked
function list_current_options {
  log 'listing the current setup'
  modinfo ixgbevf
  ethtool -i eth0
}

# :: main ::
install_dependencies
download_sources
add_dkms_config
patch_sources
build_module
list_current_options