#!/bin/bash
set -x
export PHYNAME_ATH="phy0"
export DEVNAME_ATH="mesh0"

systemctl stop systemd-timesyncd.service

devPath="/sys/class/net/"
devPrefix="wlan0"

if [ -e "$devPath$devPrefix" ]; then
	ifconfig wlan0 down
	iw dev wlan0 del
	iw phy ${PHYNAME_ATH} interface add ${DEVNAME_ATH} type mp mesh_id mesh
fi

ifconfig ${DEVNAME_ATH} down

#iw reg set US   # set US regulatory domain

iw dev ${DEVNAME_ATH} set type mp
iw phy ${PHYNAME_ATH} set antenna 3 3		# ath9k/AR9280: OK (TX=3 RX=3)
iw phy ${PHYNAME_ATH} set retry short 7 long 4	# initialize adapter with default (re-)try limits
iw phy ${PHYNAME_ATH} set rts 500
iw phy ${PHYNAME_ATH} set retry short 7 long 4	# initialize adapter with default (re-)try limits

iw dev ${DEVNAME_ATH} set power_save off	# deactivate power saving mechanism
#iw dev ${DEVNAME_ATH} set channel 1 HT40+	# set 2.4GHz channel 1 bandwidth 40MHz

#iw dev ${DEVNAME_ATH} set channel 161 HT40+	# set 5GHz channel 149 (5745 MHz) bandwidth 40MHz
#wait

ifconfig ${DEVNAME_ATH} up

#iw dev ${DEVNAME_ATH} set power_save off

#iw dev ${DEVNAME_ATH} mesh join mesh
#iw dev ${DEVNAME_ATH} mesh freq 5745 HT20
#iw dev ${DEVNAME_ATH} basic-rates 54
#iw dev ${DEVNAME_ATH} mcast-rate 54

iw dev ${DEVNAME_ATH} mesh leave
iw dev ${DEVNAME_ATH} mesh join mesh freq 5805 HT40+ basic-rates 54 mcast-rate 54
#äiw dev ${DEVNAME_ATH} mesh join mesh freq 5200 HT40+ basic-rates 54 mcast-rate 54

#iw dev ${DEVNAME_ATH} set txpower fixed 600
iw dev ${DEVNAME_ATH} set txpower fixed 300

#iw dev ${DEVNAME_ATH} mesh join mesh freq 5745 HT40+

#iw dev ${DEVNAME_ATH} set mesh_param mesh_plink_timeout=20

iw dev ${DEVNAME_ATH} set bitrates ht-mcs-5 6 sgi-5

# set further debugfs variables
#echo 0 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/rc/limit_retry				# enforce userspace long/short (re-)try limits on ath9k+RC
#echo 1 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/rc/limit_retry
#echo 10 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/rc/max_retry				# max. number of tries per MRR chain segment advertised to RC
#echo 15 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/rc/max_retry
#echo 6000 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/rc/segment_size			# max. minstrel(_ht) MRR chain segment duration in us
#echo 1000000 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/rc/segment_size
#echo 1 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/rc/activate_RTS_CTS			# RTS/CTS for fallback rate and SMPS frames
#echo 30 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/ath9k/max_ba_sw_retries	# max. number of ath9k SW retries for AMPDU subframes
#echo 0 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/ath9k/max_ba_sw_retries
#echo 1 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/ath9k/disable_ani			# old kernels -> disable Atheros ANI
echo 0 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/ath9k/ani 			    	# new kernels -> disable Atheros ANI
#echo -120 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/ath9k/nf_override		# set fixed noise floor in dBm
echo -110 > /sys/kernel/debug/ieee80211/${PHYNAME_ATH}/ath9k/nf_override		#TODO: overwritten individually below

# increase max. number of peer links to 50
#iw dev ${DEVNAME_ATH} set mesh_param mesh_max_peer_links=50



# automatically remove inactive links from station list
#iw dev ${DEVNAME_ATH} set mesh_param mesh_plink_timeout=20			# timeout in seconds

export NODE_MESH_IP=10.0.0.10
ip -4 addr del ${NODE_MESH_IP}/24 dev ${DEVNAME_ATH}
ip -4 addr add ${NODE_MESH_IP}/24 broadcast 10.0.0.255 dev ${DEVNAME_ATH}

set +x