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udev: Enable ntuple offloading feature in supported NICs

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We are using CPU-affinity and packet steering functions in various
places in IPFire, but packets might still be received on a random CPU
core.

This feature enables that packets that belong to the same connection
(i.e. have the save tuple) will be steered to the same queue. This will
increase cache locality and decrease locking which results in higher
throughput.

https://www.kernel.org/doc/Documentation/networking/scaling.txt

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Acked-by: Peter Müller <peter.mueller@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
This commit is contained in:
Michael Tremer
2021-09-07 15:01:25 +00:00
committed by Arne Fitzenreiter
parent f7627d8687
commit 8be8ac63ca
4 changed files with 54 additions and 0 deletions
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2
config/rootfiles/common/udev
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@@ -37,6 +37,7 @@ lib/udev/mtd_probe
lib/udev/network-hotplug-bridges
lib/udev/network-hotplug-rename
lib/udev/network-hotplug-vlan
lib/udev/network-offloading
lib/udev/rule_generator.functions
#lib/udev/rules.d
lib/udev/rules.d/25-alsa.rules
@@ -64,6 +65,7 @@ lib/udev/rules.d/78-sound-card.rules
lib/udev/rules.d/80-drivers.rules
lib/udev/rules.d/90-hwrng.rules
lib/udev/rules.d/99-codel.rules
lib/udev/rules.d/99-offloading.rules
lib/udev/scsi_id
lib/udev/v4l_id
lib/udev/write_cd_rules

2
config/udev/99-offloading.rules Normal file
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@@ -0,0 +1,2 @@
# Call the offloading script
SUBSYSTEM=="net", RUN+="/lib/udev/network-offloading"

44
config/udev/network-offloading Normal file
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@@ -0,0 +1,44 @@
#!/bin/bash
############################################################################
# #
# This file is part of the IPFire Firewall. #
# #
# IPFire is free software; you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation; either version 2 of the License, or #
# (at your option) any later version. #
# #
# IPFire 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. #
# #
# You should have received a copy of the GNU General Public License #
# along with IPFire; if not, write to the Free Software #
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #
# #
# Copyright (C) 2021 IPFire Team <info@ipfire.org>. #
# #
############################################################################
if [ -z "${INTERFACE}" ]; then
echo "INTERFACE variable was not set" >&2
exit 1
fi
case "${ACTION}" in
add|register)
# Try to enable ntuple (and ignore if not supported)
ethtool --features "${INTERFACE}" ntuple on &>/dev/null
;;
remove|unregister)
# Nothing to do here.
;;
*)
echo "No or unkown ACTION set" >&2
exit 1
esac
exit 0

6
lfs/udev
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@@ -132,5 +132,11 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
install -m 755 $(DIR_SRC)/config/udev/enable_codel \
/lib/udev/enable_codel
# Install offloading rules
install -v -m 644 $(DIR_SRC)/config/udev/99-offloading.rules \
/lib/udev/rules.d
install -m 755 $(DIR_SRC)/config/udev/network-offloading \
/lib/udev/network-offloading
@rm -rf $(DIR_APP)
@$(POSTBUILD)