diff options
author | Caz Yokoyama <Caz.Yokoyama@intel.com> | 2013-09-05 16:42:39 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-26 13:52:24 -0700 |
commit | 8d49751580db804a02caf6a5b7cebe2ff26c0d7e (patch) | |
tree | 69c8a70bbbed2d4b56efe7be87a44b62286d4c14 /Documentation/mic/mpssd/mpss | |
parent | 2141c7c5ee677014023cb50c793f91e85f44d2ea (diff) |
Sample Implementation of Intel MIC User Space Daemon.
This patch introduces a sample user space daemon which
implements the virtio device backends on the host. The daemon
creates/removes/configures virtio device backends by communicating with
the Intel MIC Host Driver. The virtio devices currently supported are
virtio net, virtio console and virtio block. Virtio net supports TSO/GSO.
The daemon also monitors card shutdown status and takes appropriate actions
like killing the virtio backends and resetting the card upon card shutdown
and crashes.
Co-author: Ashutosh Dixit <ashutosh.dixit@intel.com>
Co-author: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/mic/mpssd/mpss')
-rwxr-xr-x | Documentation/mic/mpssd/mpss | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/Documentation/mic/mpssd/mpss b/Documentation/mic/mpssd/mpss new file mode 100755 index 000000000000..3136c68dad0b --- /dev/null +++ b/Documentation/mic/mpssd/mpss @@ -0,0 +1,202 @@ +#!/bin/bash +# Intel MIC Platform Software Stack (MPSS) +# +# Copyright(c) 2013 Intel Corporation. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License, version 2, as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# The full GNU General Public License is included in this distribution in +# the file called "COPYING". +# +# Intel MIC User Space Tools. +# +# mpss Start mpssd. +# +# chkconfig: 2345 95 05 +# description: start MPSS stack processing. +# +### BEGIN INIT INFO +# Provides: mpss +# Required-Start: +# Required-Stop: +# Short-Description: MPSS stack control +# Description: MPSS stack control +### END INIT INFO + +# Source function library. +. /etc/init.d/functions + +exec=/usr/sbin/mpssd +sysfs="/sys/class/mic" + +start() +{ + [ -x $exec ] || exit 5 + + if [ "`ps -e | awk '{print $4}' | grep mpssd | head -1`" = "mpssd" ]; then + echo -e $"MPSSD already running! " + success + echo + return 0 + fi + + echo -e $"Starting MPSS Stack" + echo -e $"Loading MIC_HOST Module" + + # Ensure the driver is loaded + if [ ! -d "$sysfs" ]; then + modprobe mic_host + RETVAL=$? + if [ $RETVAL -ne 0 ]; then + failure + echo + return $RETVAL + fi + fi + + # Start the daemon + echo -n $"Starting MPSSD " + $exec + RETVAL=$? + if [ $RETVAL -ne 0 ]; then + failure + echo + return $RETVAL + fi + success + echo + + sleep 5 + + # Boot the cards + micctrl -b + + # Wait till ping works + for f in $sysfs/* + do + count=100 + ipaddr=`cat $f/cmdline` + ipaddr=${ipaddr#*address,} + ipaddr=`echo $ipaddr | cut -d, -f1 | cut -d\; -f1` + while [ $count -ge 0 ] + do + echo -e "Pinging "`basename $f`" " + ping -c 1 $ipaddr &> /dev/null + RETVAL=$? + if [ $RETVAL -eq 0 ]; then + success + break + fi + sleep 1 + count=`expr $count - 1` + done + [ $RETVAL -ne 0 ] && failure || success + echo + done + return $RETVAL +} + +stop() +{ + echo -e $"Shutting down MPSS Stack: " + + # Bail out if module is unloaded + if [ ! -d "$sysfs" ]; then + echo -n $"Module unloaded " + success + echo + return 0 + fi + + # Shut down the cards. + micctrl -S + + # Wait for the cards to go offline + for f in $sysfs/* + do + while [ "`cat $f/state`" != "offline" ] + do + sleep 1 + echo -e "Waiting for "`basename $f`" to go offline" + done + done + + # Display the status of the cards + micctrl -s + + # Kill MPSSD now + echo -n $"Killing MPSSD" + killall -9 mpssd 2>/dev/null + RETVAL=$? + [ $RETVAL -ne 0 ] && failure || success + echo + return $RETVAL +} + +restart() +{ + stop + sleep 5 + start +} + +status() +{ + micctrl -s + if [ "`ps -e | awk '{print $4}' | grep mpssd | head -n 1`" = "mpssd" ]; then + echo "mpssd is running" + else + echo "mpssd is stopped" + fi + return 0 +} + +unload() +{ + if [ ! -d "$sysfs" ]; then + echo -n $"No MIC_HOST Module: " + success + echo + return + fi + + stop + + sleep 5 + echo -n $"Removing MIC_HOST Module: " + modprobe -r mic_host + RETVAL=$? + [ $RETVAL -ne 0 ] && failure || success + echo + return $RETVAL +} + +case $1 in + start) + start + ;; + stop) + stop + ;; + restart) + restart + ;; + status) + status + ;; + unload) + unload + ;; + *) + echo $"Usage: $0 {start|stop|restart|status|unload}" + exit 2 +esac + +exit $? |