Merge Ubuntu DPDK packaging as of 15th June 2016

As discussed this shall be our initial baseline.
If history is needed for any sort of debugging or analysis it can be
found at https://code.launchpad.net/~ubuntu-server/dpdk/+git/dpdk

Change-Id: Ie95c7effbbea34d723df14f6451c1f782000cbc1
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 143 insertions, 0 deletions

diff --git a/debian/tests/test-initscripts b/debian/tests/test-initscripts
new file mode 100644
index 00000000..f465d6d6
--- /dev/null
+++ b/debian/tests/test-initscripts
@@ -0,0 +1,143 @@
+#!/bin/sh
+set -e
+
+basedir=$(dirname "$0")
+. "${basedir}"/check-dpdk-supported-arch.sh
+
+# Overall that could require up to 1.2G for hugepages in the test environment
+EXPECT2MHP=10
+# Some page sizes like e.g. 1G might not be available in all test environments
+# The test still configures 1 page of 1G size.
+# One of two things will happen, depending on the test environment:
+# - has 1G huge page size => they will tried to be allocated (usually env is
+#   too small, but we want to see it fail gracefully for that)
+#   We will not check for the 1G alloc, as we know it often fails in small adt's
+# - has no 1G huge page size (HW feature) => we check if it fails gracefully
+EXPECT1GHP=1
+
+DPDK_CONF="/etc/dpdk/dpdk.conf"
+DPDK_INTERF="/etc/dpdk/interfaces"
+
+checkhp() {
+    MMDIR="/sys/kernel/mm/hugepages/${1}"
+    EXPECTHP="${2}"
+    if [ -d "$MMDIR" -a -r "$MMDIR/nr_hugepages" ]; then
+        hpcount=$(cat "$MMDIR/nr_hugepages")
+        if [ "${hpcount}" -ne "${EXPECTHP}" ]; then
+            echo "Hugepages (${hpcount}) not as expected (${EXPECTHP})"
+            exit 1
+        else
+            echo "Hugepages ok (${hpcount})"
+        fi
+    fi
+}
+
+checkstatus() {
+    MARK=${1}
+    EXPMPCOUNT=${2}
+    PRE=${3}
+    POST=${4}
+    EXPECTEDSTATUS=${5}
+    echo "Status after ${MARK}"
+    echo "Status of the Service"
+    ${PRE} status "${POST}" || true
+
+    GOTSTATUS=$(${PRE} status "${POST}" | awk '/^ *Active: / { print $2 }')
+    if [ "${GOTSTATUS}" != "${EXPECTEDSTATUS}" ]; then
+        echo "Service status (${GOTSTATUS}) not as expected (${EXPECTEDSTATUS})"
+        exit 1
+    else
+        echo "Service status (${GOTSTATUS}) as expected"
+    fi
+
+    echo "Status of hugetlbfs mount points"
+    # this section is ok to create bad RCs when no mounts are available
+    set +e
+    grep hugetlbfs < /proc/mounts
+    htlbfscount=$(grep -c hugetlbfs < /proc/mounts)
+    set -e
+
+    # we have to reduce the expected mountpoint count in case some sizes are
+    # not supported by the current kernel/environment
+    if [ ${EXPMPCOUNT} -gt 0 ]; then
+        if [ ! -d /sys/kernel/mm/hugepages/hugepages-2048kB ]; then
+            EXPMPCOUNT=$((EXPMPCOUNT-1))
+        fi
+        if [ ! -d /sys/kernel/mm/hugepages/hugepages-1048576kB ]; then
+            EXPMPCOUNT=$((EXPMPCOUNT-1))
+        fi
+    fi
+
+    if [ "${htlbfscount}" -eq "${EXPMPCOUNT}" ]; then
+        echo "MP Count (${htlbfscount}) as expected (${EXPMPCOUNT})"
+    else
+        echo "MP Count (${htlbfscount}) not as expected (${EXPMPCOUNT})"
+        exit 1
+    fi
+
+    # check if setting HP worked
+    if [ "${EXPMPCOUNT}" -ne "0" ]; then
+        checkhp "hugepages-2048kB" "${EXPECT2MHP}"
+        # We do not check 1G alloc, as it is known to be often not available
+    fi
+}
+
+resetservice() {
+    # help a bit with memory fragmentation regarding huge page allocation
+    sync
+    echo 3 > /proc/sys/vm/drop_caches
+
+    # stopping and resetting Service
+    systemctl stop dpdk.service
+    systemctl reset-failed dpdk.service
+
+    echo "Unmounting all potential hugetlbfs mounts"
+    awk '/hugetlbfs/ {print $2}' /proc/mounts | while read hugetlbmount; do
+        umount -v "$hugetlbmount"
+    done
+}
+
+checkinitstyle() {
+    # We want to verify that
+    # - initially our environment has no hugetlbfs mount
+    # - a system without hugetlbfs mount gets it mounted
+    # - a restart of the service does neither drop nor duplicate the mount
+    PRE=${1}
+    POST=${2}
+    TYPE=${3}
+    printf "\n\n### Checking Type %s ###\n" "${TYPE}"
+    resetservice
+    checkstatus "${TYPE}-BEGIN" 0 "${PRE}" "${POST}" "inactive"
+    echo "### Starting Service ###"
+    ${PRE} start "${POST}"
+    checkstatus "${TYPE}-START" 2 "${PRE}" "${POST}" "active"
+    echo "### Restarting Service ###"
+    ${PRE} restart "${POST}"
+    checkstatus "${TYPE}-RESTART" 2 "${PRE}" "${POST}" "active"
+}
+
+echo "NR_2M_PAGES=$EXPECT2MHP" >> ${DPDK_CONF}
+echo "NR_1G_PAGES=$EXPECT1GHP" >> ${DPDK_CONF}
+
+# We can't rely on any real device for DPDK tests in adt-* environments. But
+# we can expect all kind of broken configuration not to break it (would be
+# detected via set -e).
+# So add all kind of known-to-be-broken definitions and expect it not to fail.
+cat <<EOF > ${DPDK_INTERF}
+# wrong bus
+pTi 0000:04:00.0 uio-pci-generic
+# not enough parms
+0000:04:00.0 uio-pci-generic
+# empty line
+
+# non existing device
+pci 1234:56:78.9 uio-pci-generic
+EOF
+
+# some had issues in the past caused by different init systems, so we test all
+# Direct Calls
+checkinitstyle "/etc/init.d/dpdk" "" "Direct"
+# System V style init
+checkinitstyle "service dpdk" "" "SysV"
+# SystemD style init
+checkinitstyle "systemctl" "dpdk.service" "SystemD"