#!/bin/sh
#----------------------------------------------------------------------------
# /etc/rc.d/circuits.ppp-pppoe-server - PPPoE circuits (server-side)
#
# Last Update:  $Id$
#----------------------------------------------------------------------------

# PPPoE, see RFC 2516 for details
DSL_PPPOE_MTU=1492     # 1500 (Ethernet MTU) - 6 (PPPoE header)
                       # - 2 (PPP header without address/control bytes)

# $1 = circuit information file
# $2 = PPP peer file
# $3 = variable receiving an error message (if any)
ppp_ethernet_server_circuit_add()
{
    # keep this synchronized with check/pppoe.ext
    local circ_ppp_ethernet_server_type=${circ_ppp_ethernet_server_type:-kernel}
    local circ_ppp_ethernet_server_sessions=${circ_ppp_ethernet_server_sessions:-64}
    : ${circ_ppp_mtu:=$DSL_PPPOE_MTU}
    : ${circ_ppp_mru:=$DSL_PPPOE_MTU}

    ip link set dev $circ_ppp_ethernet_server_dev mtu 1500 up # set mtu to 1500

    case "$circ_ppp_ethernet_server_type" in
    daemon)
        do_modprobe ppp_async
        ;;
    kernel)
        do_modprobe pppoe
        ;;
    esac

    cat >> $2 <<EOF
noaccomp
nopcomp
default-asyncmap
EOF

    cat >> $1 <<EOF
circ_ppp_ethernet_server_dev=$circ_ppp_ethernet_server_dev
circ_ppp_ethernet_server_type=$circ_ppp_ethernet_server_type
circ_ppp_ethernet_server_sessions=$circ_ppp_ethernet_server_sessions
EOF

    return 0
}

# clone adaptor for PPP-over-Ethernet server instance circuits
ppp_ethernet_server_clone_adaptor()
{
    ppp_server_clone_adaptor
    local param i=1
    for param
    do
        eval circ_ppp_ethernet_server_arg_${i}=\$param
        i=$((i+1))
    done
    circ_ppp_ethernet_server_arg_n=$((i-1))
}

# $1 = circuit information file
# $2 = PPP peer file
# $3 = variable receiving an error message (if any)
ppp_ethernet_server_instance_circuit_add()
{
    local i
    for i in $(seq 1 ${circ_ppp_ethernet_server_arg_n:-0})
    do
        eval local value=\$circ_ppp_ethernet_server_arg_${i}
        printf "%s\n" "$value"
    done >> "$2"
    return 0
}