Initial DSL framework

- Removed ifx_cpe_control_init.sh (the old init script)
- Created dsl_control (/etc/init.d)
- tidied up start and stop
- stop calls dsl_notify before killing daemon
- has status and lucistat options to provide detail
- copes with daemon not running situation
- Updated package makefile to use new init script and to build cli support
- Provide a dsl_notify.sh script to cope with line up/down events

Signed-off-by: Lee Essen <lee.essen@nowonline.co.uk>

SVN-Revision: 29881

3 files changed, 324 insertions, 21 deletions

diff --git a/package/ltq-dsl-app/files/dsl_control b/package/ltq-dsl-app/files/dsl_control
new file mode 100644
index 0000000..df31c39
--- /dev/null
+++ b/package/ltq-dsl-app/files/dsl_control
@@ -0,0 +1,280 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2008 OpenWrt.org
+START=99
+
+EXTRA_COMMANDS="status lucistat"
+EXTRA_HELP="	status  Get DSL status information
+	lucistat  Get status information if lua friendly format"
+
+SERVICE_DAEMONIZE=1
+SERVICE_WRITE_PID=1
+
+#
+# Basic functions to send CLI commands to the dsl_cpe_control daemon
+#
+dsl_cmd() {
+	pkill -0 dsl_cpe_control && (
+		echo "$@" > /tmp/pipe/dsl_cpe0_cmd
+		cat /tmp/pipe/dsl_cpe0_ack
+	)
+}
+dsl_val() {
+	echo $(expr "$1" : '.*'$2'=\([-\.[:alnum:]]*\).*')
+}
+
+#
+# Simple divide by 10 routine to cope with one decimal place
+#
+dbt() {
+	local a=$(expr $1 / 10)
+	local b=$(expr $1 % 10)
+	echo "${a}.${b}"
+}
+#
+# Take a number and convert to k or meg
+#
+scale() {
+	local val=$1
+	local a
+	local b
+
+	if [ "$val" -gt 1000000 ]; then
+		a=$(expr $val / 1000)
+		b=$(expr $a % 1000)
+		a=$(expr $a / 1000)
+		printf "%d.%03d Mb" ${a} ${b}
+	elif [ "$val" -gt 1000 ]; then
+		a=$(expr $val / 1000)
+		printf "%d Kb" ${a}
+	else
+		echo "${val} b"
+	fi
+}
+
+#
+# Read the data rates for both directions
+#
+data_rates() {
+	local csg
+	local dru
+	local drd
+	local sdru
+	local sdrd
+
+	csg=$(dsl_cmd g997csg 0 1)
+	drd=$(dsl_val "$csg" ActualDataRate)
+
+	csg=$(dsl_cmd g997csg 0 0)
+	dru=$(dsl_val "$csg" ActualDataRate)
+
+	[ -z "$drd" ] && drd=0
+	[ -z "$dru" ] && dru=0
+
+	sdrd=$(scale $drd)
+	sdru=$(scale $dru)
+
+	if [ "$action" = "lucistat" ]; then
+		echo "dsl.data_rate_down=$drd"
+		echo "dsl.data_rate_up=$dru"
+		echo "dsl.data_rate_down_s=\"$sdrd\""
+		echo "dsl.data_rate_up_s=\"$sdru\""
+	else
+		echo "Data Rate:		${sdrd}/s / ${sdru}/s"
+	fi
+}
+
+#
+# Chipset
+#
+chipset() {
+	local vig
+	local cs
+	local csv
+
+	vig=$(dsl_cmd vig)
+	cs=$(dsl_val "$vig" DSL_ChipSetType)
+	csv=$(dsl_val "$vig" DSL_ChipSetHWVersion)
+
+	if [ "$action" = "lucistat" ]; then
+		echo "dsl.chipset=\"${cs} ${csv}\""
+	else
+		echo "Chipset:		${cs} ${csv}"
+	fi
+}
+
+#
+# Work out how long the line has been up
+#
+line_uptime() {
+	local ccsg
+	local et
+	local etr
+	local d
+	local h
+	local m
+	local s
+	local rc=""
+
+	ccsg=$(dsl_cmd pmccsg 0 0 0)
+	et=$(dsl_val "$ccsg" nElapsedTime)
+
+	[ -z "$et" ] && et=0
+
+	if [ "$action" = "lucistat" ]; then
+		echo "dsl.line_uptime=${et}"
+		return
+	fi
+
+	d=$(expr $et / 86400)
+	etr=$(expr $et % 86400)
+	h=$(expr $etr / 3600)
+	etr=$(expr $etr % 3600)
+	m=$(expr $etr / 60)
+	s=$(expr $etr % 60)
+
+
+	[ "${d}${h}${m}${s}" -ne 0 ] && rc="${s}s"
+	[ "${d}${h}${m}" -ne 0 ] && rc="${m}m ${rc}"
+	[ "${d}${h}" -ne 0 ] && rc="${h}h ${rc}"
+	[ "${d}" -ne 0 ] && rc="${d}d ${rc}"
+
+	[ -z "$rc" ] && rc="down"
+	echo "Line Uptime:		${rc}"
+}
+
+#
+# Get noise and attenuation figures
+#
+line_data() {
+	local lsg
+	local latnu
+	local latnd
+	local snru
+	local snrd
+
+	lsg=$(dsl_cmd g997lsg 1 1)
+	latnd=$(dsl_val "$lsg" LATN)
+	snrd=$(dsl_val "$lsg" SNR)
+
+	lsg=$(dsl_cmd g997lsg 0 1)
+	latnu=$(dsl_val "$lsg" LATN)
+	snru=$(dsl_val "$lsg" SNR)
+
+	[ -z "$latnd" ] && latnd=0
+	[ -z "$latnu" ] && latnu=0
+	[ -z "$snrd" ] && snrd=0
+	[ -z "$snru" ] && snru=0
+
+	latnd=$(dbt $latnd)
+	latnu=$(dbt $latnu)
+	snrd=$(dbt $snrd)
+	snru=$(dbt $snru)
+	
+	if [ "$action" = "lucistat" ]; then
+		echo "dsl.line_attenuation_down=$latnd"
+		echo "dsl.line_attenuation_up=$latnu"
+		echo "dsl.noise_margin_down=$snrd"
+		echo "dsl.noise_margin_up=$snru"
+	else
+		echo "Line Attenuation:	${latnd}dB / ${latnu}dB"
+		echo "Noise Margin:		${snrd}dB / ${snru}dB"
+	fi
+}
+
+#
+# Is the line up? Or what state is it in?
+#
+line_state() {
+	local lsg=$(dsl_cmd lsg)
+	local ls=$(dsl_val "$lsg" nLineState);
+	local s;
+
+	case "$ls" in
+		"0x0")		s="not initialized" ;;
+		"0x1")		s="exception" ;;
+		"0x10")		s="not updated" ;;
+		"0xff")		s="idle request" ;;
+		"0x100")	s="idle" ;;
+		"0x1ff")	s="silent request" ;;
+		"0x200")	s="silent" ;;
+		"0x300")	s="handshake" ;;
+		"0x380")	s="full_init" ;;
+		"0x400")	s="discovery" ;;
+		"0x500")	s="training" ;;
+		"0x600")	s="analysis" ;;
+		"0x700")	s="exchange" ;;
+		"0x800")	s="showtime_no_sync" ;;
+		"0x801")	s="showtime_tc_sync" ;;
+		"0x900")	s="fastretrain" ;;
+		"0xa00")	s="lowpower_l2" ;;
+		"0xb00")	s="loopdiagnostic active" ;;
+		"0xb10")	s="loopdiagnostic data exchange" ;;
+		"0xb20")	s="loopdiagnostic data request" ;;
+		"0xc00")	s="loopdiagnostic complete" ;;
+		"0x1000000")	s="test" ;;
+		"0xd00")	s="resync" ;;
+		"0x3c0")	s="short init entry" ;;
+		"")		s="not running daemon"; ls="0xfff" ;;
+		*)		s="unknown" ;;
+	esac
+
+	if [ $action = "lucistat" ]; then
+		echo "dsl.line_state_num=$ls"
+		echo "dsl.line_state_detail=\"$s\""
+		if [ "$ls" = "0x801" ]; then
+			echo "dsl.line_state=\"UP\""
+		else
+			echo "dsl.line_state=\"DOWN\""
+		fi
+	else
+		if [ "$ls" = "0x801" ]; then
+			echo "Line State:		UP [$ls: $s]"
+		else
+			echo "Line State:		DOWN [$ls: $s]"
+		fi
+	fi
+}
+
+#
+# Main status routine
+#
+status() {
+	chipset
+	line_state
+	data_rates
+	line_data
+	line_uptime
+}
+
+#
+# Luci (lua) compatible version that's easy to parse
+#
+lucistat() {
+	echo "local dsl={}"
+	status
+	echo "return dsl"
+}
+
+#
+# Simple start routine
+#
+start() {
+	# start CPE dsl daemon in the background
+	service_start /sbin/dsl_cpe_control -i \
+			-n /sbin/dsl_notify.sh \
+			-f /lib/firmware/ModemHWE.bin
+}
+
+#
+# For stop we want to simulate the notification call for when
+# the line goes down, so that we can stop the ppp link before
+# we die.
+#
+stop() {
+	DSL_NOTIFICATION_TYPE="DSL_INTERFACE_STATUS" \
+	DSL_INTERFACE_STATUS="DOWN" \
+	/sbin/dsl_notify.sh
+
+	service_stop /sbin/dsl_cpe_control
+}
+
diff --git a/package/ltq-dsl-app/files/dsl_notify.sh b/package/ltq-dsl-app/files/dsl_notify.sh
new file mode 100644
index 0000000..f440450
--- /dev/null
+++ b/package/ltq-dsl-app/files/dsl_notify.sh
@@ -0,0 +1,44 @@
+#!/bin/sh
+#
+# This script is called by dsl_cpe_control whenever there is a DSL event,
+# we only actually care about the DSL_INTERFACE_STATUS events as these
+# tell us the line has either come up or gone down.
+#
+# The rest of the code is basically the same at the atm hotplug code
+#
+
+[ "$DSL_NOTIFICATION_TYPE" = "DSL_INTERFACE_STATUS" ] || exit 0
+
+. /etc/functions.sh
+
+include /lib/network
+scan_interfaces
+
+local found=0
+local ifc
+for ifc in $interfaces; do
+	local up
+	config_get_bool up "$ifc" up 0
+
+	local auto
+	config_get_bool auto "$ifc" auto 1
+
+	local proto
+	config_get proto "$ifc" proto
+
+	if [ "$DSL_INTERFACE_STATUS" = "UP" ]; then
+		if [ "$proto" = "pppoa" ] && [ "$up" != 1 ] && [ "$auto" = 1 ]; then
+			found=1
+			( sleep 1; ifup "$ifc" ) &
+		fi
+	else
+		if [ "$proto" = "pppoa" ] && [ "$up" = 1 ] && [ "$auto" = 1 ]; then
+			found=1
+			( sleep 1; ifdown "$ifc" ) &
+		fi
+	fi
+done
+
+if [ "$found" != 1 ]; then
+	logger "Found no matching interface for DSL notification ($DSL_INTERFACE_STATUS)"
+fi
diff --git a/package/ltq-dsl-app/files/ifx_cpe_control_init.sh b/package/ltq-dsl-app/files/ifx_cpe_control_init.sh
deleted file mode 100644
index 9131693..0000000
--- a/package/ltq-dsl-app/files/ifx_cpe_control_init.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/bin/sh /etc/rc.common
-# Copyright (C) 2008 OpenWrt.org
-START=99
-
-start() {
-
-	# start CPE dsl daemon in the background
-	/sbin/dsl_cpe_control -i -f /lib/firmware/ModemHWE.bin &
-
-#	PS=`ps`
-#	echo $PS | grep -q dsl_cpe_control && {
-#		# workaround for nfs: allow write to pipes for non-root
-#		while [ ! -e /tmp/pipe/dsl_cpe1_ack ] ; do sleep 1; done
-#		chmod a+w /tmp/pipe/dsl_*
-#	}
-	echo $PS | grep -q dsl_cpe_control || {
-		echo "Start of dsl_cpe_control failed!!!"
-		false
-	}
-
-}