#!/bin/bash
#
# Script for max single flow performance
#  - If correctly tuned[1], single CPU 10G wirespeed small pkts is possible[2]
#
# Using pktgen "burst" option (use -b $N)
#  - To boost max performance
#  - Avail since: kernel v3.18
#   * commit 38b2cf2982dc73 ("net: pktgen: packet bursting via skb->xmit_more")
#  - This avoids writing the HW tailptr on every driver xmit
#  - The performance boost is impressive, see commit and blog [2]
#
# Notice: On purpose generates a single (UDP) flow towards target,
#   reason behind this is to only overload/activate a single CPU on
#   target host.  And no randomness for pktgen also makes it faster.
#
# Tuning see:
#  [1] http://netoptimizer.blogspot.dk/2014/06/pktgen-for-network-overload-testing.html
#  [2] http://netoptimizer.blogspot.dk/2014/10/unlocked-10gbps-tx-wirespeed-smallest.html
#
basedir=`dirname $0`
source ${basedir}/functions.sh
root_check_run_with_sudo "$@"

# Parameter parsing via include
source ${basedir}/parameters.sh
# Set some default params, if they didn't get set
if [ -z "$DEST_IP" ]; then
    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
fi
[ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
[ -z "$BURST" ]     && BURST=32
[ -z "$CLONE_SKB" ] && CLONE_SKB="100000"

# Base Config
DELAY="0"  # Zero means max speed
COUNT="0"  # Zero means indefinitely

# General cleanup everything since last run
pg_ctrl "reset"

# Threads are specified with parameter -t value in $THREADS
for ((thread = 0; thread < $THREADS; thread++)); do
    dev=${DEV}@${thread}

    # Add remove all other devices and add_device $dev to thread
    pg_thread $thread "rem_device_all"
    pg_thread $thread "add_device" $dev

    # Base config
    pg_set $dev "flag QUEUE_MAP_CPU"
    pg_set $dev "count $COUNT"
    pg_set $dev "clone_skb $CLONE_SKB"
    pg_set $dev "pkt_size $PKT_SIZE"
    pg_set $dev "delay $DELAY"
    pg_set $dev "flag NO_TIMESTAMP"

    # Destination
    pg_set $dev "dst_mac $DST_MAC"
    pg_set $dev "dst$IP6 $DEST_IP"

    # Setup burst, for easy testing -b 0 disable bursting
    # (internally in pktgen default and minimum burst=1)
    if [[ ${BURST} -ne 0 ]]; then
	pg_set $dev "burst $BURST"
    else
	info "$dev: Not using burst"
    fi
done

# Run if user hits control-c
function control_c() {
    # Print results
    for ((thread = 0; thread < $THREADS; thread++)); do
	dev=${DEV}@${thread}
	echo "Device: $dev"
	cat /proc/net/pktgen/$dev | grep -A2 "Result:"
    done
}
# trap keyboard interrupt (Ctrl-C)
trap control_c SIGINT

echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
'q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/dwc3?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>dwc3</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/dwc3/core.c?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>core.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3f67790d2b7e322bcf363ec717085dd78c3ea7cd'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-03 13:46:38 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-03 13:46:38 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/dwc3/core.c?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>3f67790d2b7e322bcf363ec717085dd78c3ea7cd</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/dwc3/core.c?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>7be20232078a2e801ed93bcdb72f0d955dd9836f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/dwc3/core.c?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>drivers/usb/dwc3/core.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/dwc3/core.c?id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>cd44691f7177b2c1e1509d1a17d9b198ebaa34eb</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/dwc3/core.c?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd&amp;id2=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/dwc3/core.c?id=206c4720092d2a24bfefc041b377e889a220ffbf'>206c4720092d2a24bfefc041b377e889a220ffbf</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/dwc3/core.c?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd&amp;id2=206c4720092d2a24bfefc041b377e889a220ffbf'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'regulator-fix-v4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator</div><div class='commit-msg'>Pull regulator fixes from Mark Brown:
 "Three changes here: two run of the mill driver specific fixes and a
  change from Mark Rutland which reverts some new device specific ACPI
  binding code which was added during the merge window as there are
  concerns about this sending the wrong signal about usage of regulators
  in ACPI systems"

* tag 'regulator-fix-v4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: fixed: Revert support for ACPI interface
  regulator: axp20x: AXP806: Fix dcdcb being set instead of dcdce
  regulator: twl6030: fix range comparison, allowing vsel = 59
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3f67790d2b7e322bcf363ec717085dd78c3ea7cd'>Diffstat</a> (limited to 'drivers/usb/dwc3/core.c')</div><table summary='diffstat' class='diffstat'>