#!/bin/sh
# @(#) eriforce	1.1 20030112 halvard halvorsen
#
# script to force eri ethernet interface settings.
#
# parameters explained in http://docs.sun.com/db/doc/816-2127-05
#
#  there are other ways of configuring this interface
#  a) change /etc/system 
#  b) use a driver configuration file (/kernel/drv/eri.conf)
#  c) use nvram to force the speed
#       ok nvedit
#       0: probe-all install-console banner
#       1: apply transfer-speed=10 full_ path_name_of_a_eri_device
#
# 
#  install: 
#
#  cd /etc/rc2.d
#  ln -s ../init.d/eriforce ./S31eriforce
#
#

PATH=/usr/bin:/usr/sbin

thisone=`basename $0`

instance=0

# speed is 10 or 100
speed=100
# duplex should be set to half or full
duplex=full

#
# check that we are root
# '/usr/xpg4/bin/id -u ' is more elegant - can't trust it's there
# so use good old /usr/bin/id with some awk
#
uid=`id | awk -F= '{print $2}' | awk -F"(" '{print $1}' 2>/dev/null`

if [ $uid -eq 0 ]
then
  :
else
  echo "$thisone: ERROR - you have to be root to run this script."
  echo ""
  exit 1
fi

/usr/sbin/ndd -set /dev/eri instance $instance


if [ -z "$speed" ]
then
  echo "$thisone: WARNING - no speed set. interface settings not changed"
  echo "$thisone: please set the speed in $thisone"
  echo ""
  exit 2
fi

if [ -z "$duplex" ]
then
  echo "$thisone: WARNING - duplex not set. interface settings not changed"
  echo "$thisone: please change duplex settings in $thisone"
  echo ""
  exit 3
fi
  

#
# if the speed and duplex settings are not correctly spelt we end
# up with 100 Mbit/sec full duplex.
# 

if [ "$speed" = "10" ]
then
  if [ "$duplex" = "half" ]
  then
    echo "$thisone: forcing speed on eri$instance to 10 Mbit/sec half-duplex"
    /usr/sbin/ndd -set /dev/eri adv_10hdx_cap 1
    /usr/sbin/ndd -set /dev/eri adv_10fdx_cap 0
    /usr/sbin/ndd -set /dev/eri adv_100fdx_cap 0
    /usr/sbin/ndd -set /dev/eri adv_100hdx_cap 0
  else
    echo "$thisone: forcing speed on eri$instance to 10 Mbit/sec full-duplex"
    /usr/sbin/ndd -set /dev/eri adv_10fdx_cap 1
    /usr/sbin/ndd -set /dev/eri adv_10hdx_cap 0
    /usr/sbin/ndd -set /dev/eri adv_100fdx_cap 0
    /usr/sbin/ndd -set /dev/eri adv_100hdx_cap 0
  fi
else
  if [ "$duplex" = "half" ]
  then
    echo "$thisone: forcing speed on eri$instance to 100 Mbit/sec half-duplex"
    /usr/sbin/ndd -set /dev/eri adv_100hdx_cap 1
    /usr/sbin/ndd -set /dev/eri adv_100fdx_cap 0
    /usr/sbin/ndd -set /dev/eri adv_10fdx_cap 0
    /usr/sbin/ndd -set /dev/eri adv_10hdx_cap 0
  else
    echo "$thisone: forcing speed on eri$instance to 100 Mbit/sec full-duplex"
    /usr/sbin/ndd -set /dev/eri adv_100fdx_cap 1
    /usr/sbin/ndd -set /dev/eri adv_100hdx_cap 0
    /usr/sbin/ndd -set /dev/eri adv_10fdx_cap 0
    /usr/sbin/ndd -set /dev/eri adv_10hdx_cap 0
  fi
fi

# always turn off autoneg_cap (0="forced mode")
# this is the _last_ step in the setup and _not_ the first one
# (see the manual for more info).

/usr/sbin/ndd -set /dev/eri adv_autoneg_cap 0

exit 0