#!/bin/sh

check_stopped_queue(){
  local device=$1
  grep -q -E 'stopped: 1$' "${device}/queues"
}

get_tx_pkts() {
  local device=$1
  grep 'TX-Pkts-All' "${device}/xmit" \
    | sed -e 's/^TX-Pkts-All: *\([0-9]*\) .*$/\1/'
}

inc_fatal() {
  local qs=$(cat /tmp/ath9k_workaround_trigger 2>/dev/null || echo 0)
  expr ${qs} + 1 > /tmp/ath9k_workaround_trigger
}

check_ath9k_bug() {
  local device=$1
  check_stopped_queue $device && {
    local tx_first=$(get_tx_pkts $device)
    sleep 5
    check_stopped_queue $device && {
      local tx_second=$(get_tx_pkts $device)
      test $tx_first == $tx_second && {
        local hostname=$(uci get -q system.@system[0].hostname)
        echo "Hostname: ${hostname}"
        echo "------------ Trigger workaround: ${tx_first} -> ${tx_second} ----------------"
        echo "Model:" 
        cat /tmp/sysinfo/model
        echo "Release:"
        cat /lib/gluon/release
        echo "Uptime:"
        uptime
        echo "Batctl Neighbours:"
        batctl o | grep wlan0-1
        echo "Queues:"
        cat $device/queues
        echo "Reset:"
        cat $device/reset
        echo "------------ Interupts #1 ---------------------------------------------------"
        cat $device/interrupt
        sleep 10
        echo "------------ Interupts #2 ---------------------------------------------------"
        cat $device/interrupt
        echo "Batctl Neighbours:"
        batctl o | grep wlan0-1

        #BE queue hangs
        inc_fatal
        wifi
        exit 1;
      }
    }
  }
}

for device in /sys/kernel/debug/ieee80211/phy*/ath9k ; do
  check_ath9k_bug $device
done