1 files changed, 98 insertions, 0 deletions
diff --git a/src/seastar/scripts/run_with_dpdk.sh b/src/seastar/scripts/run_with_dpdk.sh
new file mode 100755
index 000000000..e00fbc29f
--- /dev/null
+++ b/src/seastar/scripts/run_with_dpdk.sh
@@ -0,0 +1,98 @@
+#!/bin/bash
+# !
+# ! Usage: ./prepare_dpdk_env.sh <NIC to use> <number of huge pages per NUMA Node> <command to execute> [command parameters]
+# !
+# ! Prepares the DPDK environment (binds a given NIC to UIO, allocates the required
+# ! number of huge pages) and executes the given command in it.
+# ! After the command terminates the original environment is restored apart from
+# ! huge pages, that remain allocated.
+# !
+
+usage()
+{
+    cat $0 | grep ^"# !" | cut -d"!" -f2-
+}
+
+#
+#  check_stat_and_exit <error message>
+#
+check_stat_and_exit()
+{
+    if [[ $? -ne 0 ]]; then
+        echo $@
+        exit 1
+    fi
+}
+
+rollback()
+{
+    echo "Binding $NIC($BDF) back to $DRIVER..."
+    $SCRIPTS_DIR/dpdk_nic_bind.py -u $BDF
+    $SCRIPTS_DIR/dpdk_nic_bind.py -b $DRIVER $BDF
+}
+
+check_stat_and_rollback()
+{
+    if [[ $? -ne 0 ]]; then
+        echo $@
+        rollback
+        exit 1
+    fi
+}
+
+# Check number of parameters
+if [[ $# -lt 3 ]]; then
+    usage
+    exit 1
+fi
+
+NIC=$1
+shift
+NUM_HUGE_PAGES_PER_NODE=$1
+shift
+SCRIPTS_DIR=`dirname $0`
+
+
+ifconfig $NIC down
+check_stat_and_exit "Failed to shut down $NIC. Is $NIC present? Are your permissions sufficient?"
+
+DRIVER=`ethtool -i $NIC | grep driver | cut -d":" -f2- | tr -d ' '`
+BDF=`ethtool -i $NIC | grep bus-info | cut -d":" -f2- |  tr -d ' '`
+
+# command to execute
+CMD=$@
+
+echo "Binding $NIC($BDF) to uio_pci_generic..."
+$SCRIPTS_DIR/dpdk_nic_bind.py -u $BDF
+check_stat_and_exit
+$SCRIPTS_DIR/dpdk_nic_bind.py -b uio_pci_generic $BDF
+check_stat_and_rollback
+
+echo "Allocating $NUM_HUGE_PAGES_PER_NODE 2MB huge pages on each NUMA Node:"
+for d in /sys/devices/system/node/node? ; do
+    echo $NUM_HUGE_PAGES_PER_NODE > $d/hugepages/hugepages-2048kB/nr_hugepages
+    check_stat_and_rollback
+    cur_node=`basename $d`
+    echo "...$cur_node done..."
+done
+
+mkdir -p /mnt/huge
+check_stat_and_rollback
+
+grep -s '/mnt/huge' /proc/mounts > /dev/null
+if [[ $? -ne 0 ]] ; then
+    echo "Mounting hugetlbfs at /mnt/huge..."
+    mount -t hugetlbfs nodev /mnt/huge
+    check_stat_and_rollback
+fi
+
+# Run scylla
+echo "Running: $CMD"
+$CMD
+ret=$?
+
+# Revert the NIC binding
+rollback
+
+exit $ret
+