Script to reload ath11k/ath10k for NSS or non-NSS builds

ath_reload.sh

#!/bin/sh -x
# shellcheck disable=2070,2144
#
# This script is used to reload the ath11k/ath10k driver without
# requiring a reboot. It is intended to be used for debugging purposes
# when trying new drivers, firmware, or disabling NSS wifi offload.
# Save this script to `/usr/bin/ath_reload` and make it executable.
# By default, the script will reload the driver with whatever options
# are currently set in the kernel module.
#
# You can also pass options:
#
# To disable NSS offload:
# ath_reload nss_offload=0 nss_redirect=0
#
# To reenable NSS offload after disabling it:
# ath_reload nss_offload=1
#
# For tri-band devices that use ath11k + ath10k:
# ath_reload nss_offload=1 nss_redirect=1
#
# NOTE: There is NO need to enable `nss_redirect=1` for ath11k ONLY devices.
#       It should technically already be off.
#
#       Don't specify `frame_mode` unless you know what you're doing.
#       The default is 2 (ethernet frames).
#
#       This script will output everything it's doing to the console, and run
#       `logread -l40 -f` to show you system log. You can `CTRL+C` to exit.
#
#       It is advised you run this over a wired connection or serial console.

if [ -r /sys/module/ath11k/parameters/nss_offload ]; then
  [ -z "$nss_redirect" ] && nss_redirect=$(cat /sys/module/mac80211/parameters/nss_redirect 2> /dev/null)
  [ -z "$nss_offload" ] && nss_offload=$(cat /sys/module/ath11k/parameters/nss_offload 2> /dev/null)
  nss_redirect="nss_redirect=${nss_redirect:-0}"
  nss_offload="nss_offload=${nss_offload:-1}"
fi

[ -z "$frame_mode" ] && frame_mode=$(cat /sys/module/ath11k/parameters/frame_mode 2> /dev/null)
[ -z "$debug_mask" ] && debug_mask=$(cat /sys/module/ath11k/parameters/debug_mask 2> /dev/null)

frame_mode=${frame_mode:-2}
debug_mask=${debug_mask:-0x0}

[ -r /etc/init.d/qca-nss-ecm ] && service qca-nss-ecm stop

/etc/init.d/wpad stop
/sbin/wifi down

lsmod | sort -k1,3r | awk '$1 ~ /ath10k|ath11k/{print $1}' | while read -r module; do rmmod "$module"; done
rmmod ath
rmmod mac80211
rmmod cfg80211
sleep 1
modprobe cfg80211

insmod mac80211 "${nss_redirect}"
insmod ath11k frame_mode="${frame_mode}" "${nss_offload}" debug_mask="${debug_mask}" "$@"

modprobe ath11k_ahb

[ -r /lib/modules/*/ath10k_pci.ko ] && {
  [ -z "$ath10k_debug_mask" ] && debug_mask=$(cat /sys/module/ath10k_core/parameters/debug_mask 2> /dev/null)
  ath10k_debug_mask=${ath10k_debug_mask:-0x0}
  modprobe ath
  insmod ath10k_core debug_mask="${ath10k_debug_mask}"
  modprobe ath10k_pci
}

[ -r /etc/init.d/qca-nss-ecm ] && service qca-nss-ecm start

/etc/init.d/wpad start
/sbin/wifi up

[ -n $SHLVL ] && [ $SHLVL -gt 0 ] && logread -l40 -f