#! /bin/sh
# /etc/rc.d/rc.ath
# This script brings up the ath* interfaces for Atheros networking devices.
# Just one interface for now. Most of this is from rc.inet1

## set this here to make it easier to change
DHCP_TIMEOUT=10

############################
# READ NETWORK CONFIG FILE #
############################

## set the config variables here
ATH_IPADDR[0]=""
ATH_NETMASK[0]=""
ATH_USE_DHCP[0]="yes"
ATH_DHCP_HOSTNAME[0]=""

## set debug options
DEBUG_ATH_UP="yes"

###########
# LOGGING #
###########

## same as rc.inet1
# If possible, log events in /var/log/messages:
if [ /var/run/syslogd.pid -a -x /usr/bin/logger ]; then
  LOGGER=/usr/bin/logger
else # output to stdout/stderr:
  LOGGER=/bin/cat
fi

#####################
# ATHEROS FUNCTIONS #
#####################

## copied from eth_up in rc.inet1, with modifications
ath_up() {
  # If the interface isn't in the kernel yet (but there's an alias for it in
  # modules.conf), then it should be loaded first:
  if ! grep ath${1}: /proc/net/dev 1> /dev/null ; then # no interface yet
    if /sbin/modprobe -c | grep -w "alias ath${1}" | grep -vw "alias ath${1} off" > /dev/null ; then
      ## I don't know what the module is for non-pci cards
      echo "/etc/rc.d/rc.ath:  /sbin/modprobe ath_pci" | $LOGGER
      /sbin/modprobe ath_pci
    fi
  fi
  if grep ath${1}: /proc/net/dev 1> /dev/null ; then # interface exists
    if ! /sbin/ifconfig | grep -w "ath${1}" 1>/dev/null || \
      ! /sbin/ifconfig ath${1} | grep "inet addr" 1> /dev/null ; then # interface not up or not configured
      if [ -x /etc/rc.d/rc.wireless ]; then
        . /etc/rc.d/rc.wireless ath${1} # Initialize any wireless parameters
      fi
      if [ "${ATH_USE_DHCP[$1]}" = "yes" ]; then # use DHCP to bring interface up
        if [ ! "${ATH_DHCP_HOSTNAME[$1]}" = "" ]; then
          echo "/etc/rc.d/rc.ath:  /sbin/dhcpcd -d -t $DHCP_TIMEOUT -h ${ATH_DHCP_HOSTNAME[$1]} ath${1}" | $LOGGER
          /sbin/dhcpcd -d -t 10 -h ${ATH_DHCP_HOSTNAME[$1]} ath${1}
        else
          echo "/etc/rc.d/rc.ath:  /sbin/dhcpcd -d -t $DHCP_TIMEOUT ath${1}" | $LOGGER
          /sbin/dhcpcd -d -t 10 ath${1}
        fi
      else # bring up interface using a static IP address
        if [ ! "${ATH_IPADDR[$1]}" = "" ]; then # skip unconfigured interfaces
          # Determine broadcast address from the IP address and netmask:
          BROADCAST=`/bin/ipmask ${ATH_NETMASK[$1]} ${ATH_IPADDR[$1]} | cut -f 1 -d ' '`
          # Set up the ethernet card:
          echo "/etc/rc.d/rc.ath:  /sbin/ifconfig ath${1} ${ATH_IPADDR[$1]} broadcast ${BROADCAST} netmask ${ATH_NETMASK[$1]}" | $LOGGER
          /sbin/ifconfig ath${1} ${ATH_IPADDR[$1]} broadcast ${BROADCAST} netmask ${ATH_NETMASK[$1]}
        else
          if [ "$DEBUG_ATH_UP" = "yes" ]; then
            echo "/etc/rc.d/rc.ath:  ath${1} interface is not configured in /etc/rc.d/rc.inet1.conf" | $LOGGER
          fi
        fi
      fi
    else
      if [ "$DEBUG_ATH_UP" = "yes" ]; then
        echo "/etc/rc.d/rc.ath:  ath${1} is already up, skipping" | $LOGGER
      fi
    fi 
  else
    if [ "$DEBUG_ATH_UP" = "yes" ]; then
      echo "/etc/rc.d/rc.ath:  ath${1} interface does not exist (yet)" | $LOGGER
    fi
  fi
}

# Function to take down an Atheros interface: (same as eth_down in rc.inet1)
ath_down() {
  if grep ath${1}: /proc/net/dev 1> /dev/null ; then
    if [ "${ATH_USE_DHCP[$1]}" = "yes" ]; then
      echo "/etc/rc.d/rc.ath:  /sbin/dhcpcd -k -d ath${1}" | $LOGGER
      /sbin/dhcpcd -k -d ath${1} || /sbin/ifconfig ath${1} down
      sleep 1
    else
      echo "/etc/rc.d/rc.ath:  /sbin/ifconfig ath${1} down" | $LOGGER
      /sbin/ifconfig ath${1} down
    fi
  fi
}

############
### MAIN ###
############

## this is copied from rc.inet1 but eth is replaced with ath
case "$1" in
'start') # "start" brings up all Atheros interfaces:
  ath_up 0
  ;;
'stop') # "stop" takes down all existing interfaces:
  ath_down 0
  ;;
ath?_start) # "ath?_start" will start the specified interface
  INUM=`echo $1 | /bin/cut -c 4`
  ath_up $INUM
  ;;
ath?_stop) # "ath?_stop" will stop the specified interface
  INUM=`echo $1 | /bin/cut -c 4`
  ath_down $INUM
  ;;
ath?_restart) # "ath?_restart" will take the specified interface down and up again
  INUM=`echo $1 | /bin/cut -c 4`
  ath_down $INUM
  ath_up $INUM
  ;;
*) # The default is to bring up all interfaces:
  ath_up 0
esac

# End of /etc/rc.d/rc.ath