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disable-hwcrypto.sh
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executable file
·46 lines (30 loc) · 1.22 KB
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#!/bin/bash
# Copyright (c) 2017, Mathy Vanhoef <Mathy.Vanhoef@cs.kuleuven.be>
#
# This code may be distributed under the terms of the BSD license.
# See README for more details.
set -e
NOHWCRYPT="ath5k ath9k ath9k_htc rt2800usb carl9170 b43 p54common rt2500usb rt2800pci rt73usb"
SWCRYPTO="iwlwifi iwl3945 iwl4965"
HWCRYPTO="ipw2200"
MODFILE="/etc/modprobe.d/nohwcrypt.conf"
# 0. Check if we have root privileges
if [[ $EUID -ne 0 ]]; then
echo "This script must be run as root"
exit 1
fi
# 1. Create nohwcrypt.conf options file
rm $MODFILE 2> /dev/null || true
for MODULE in $NOHWCRYPT
do echo "options $MODULE nohwcrypt=1" >> $MODFILE; done
for MODULE in $SWCRYPTO
do echo "options $MODULE swcrypto=1" >> $MODFILE; done
for MODULE in $HWCRYPTO
do echo "options $MODULE hwcrypto=0" >> $MODFILE; done
# 2. Remove loaded modules so they'll reload parameters. Note that modules that
# are in use by others won't be removed (e.g. iwlwifi won't be removed).
for MODULE in $NOHWCRYPT $SWCRYPTO $HWCRYPTO
do rmmod $MODULE 2> /dev/null || true; done
# 3. Done. To be sure parameters are reloaded, reboot computer.
echo "Created config file $MODFILE to disable hardware decryption."
echo "Reboot your computer to apply the changes."