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authorAndrea Merello <andrea.merello@gmail.com>2017-05-13 17:16:13 +0200
committerHauke Mehrtens <hauke@hauke-m.de>2018-01-07 23:46:44 +0100
commitdea8979a81d72eac79321f1f3bf72fb5244275b6 (patch)
tree299bd8de0726f7564c0412e6cac8c70e0a596b09
parent99342316708307f44262f01b1d574183d82a6e35 (diff)
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Lantiq: make possible to tweak DSL SRN from UCI
This patch makes possible to tweak the downstream SNR margin on Lantiq DSL devices. The UCI parameter 'network.dsl.ds_snr_offset' is used to set the SNR margin offset. It accepts values in range -50 to +50 in 0.1 dB units. The SNR margin can thus be modified in range -5.0 to +5.0 dB in 0.1 dB steps. Currently this should only affect ADSL (not VDSL). It should be very easy to make this work also on VDSL lines, but since I couldn't test on VDSL lines this patch does not do that yet. I have also a patch for LUCI about this, that I could submit. Tested on FB3370 (Lantiq VR9) and Telecom Italia ADSL2+ line. Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
-rw-r--r--package/network/config/ltq-vdsl-app/files/dsl_control27
1 files changed, 26 insertions, 1 deletions
diff --git a/package/network/config/ltq-vdsl-app/files/dsl_control b/package/network/config/ltq-vdsl-app/files/dsl_control
index 5ca1b12eea..c659d50e1b 100644
--- a/package/network/config/ltq-vdsl-app/files/dsl_control
+++ b/package/network/config/ltq-vdsl-app/files/dsl_control
@@ -96,6 +96,22 @@ tone_vdsl_b="0x1" # B43
tone_adsl_bv="0x81" # B43 + B43c
tone_vdsl_bv="0x5" # B43 + V43
+# create ADSL autoboot script. Used for SNR margin tweak
+autoboot_script() {
+ echo "[WaitForConfiguration]={
+locs 0 $1
+}
+
+[WaitForLinkActivate]={
+}
+
+[WaitForRestart]={
+}
+
+[Common]={
+}" > /tmp/adsl.scr
+}
+
lowlevel_cfg() {
echo "# VRX Low Level Configuration File
#
@@ -166,6 +182,7 @@ start_service() {
local line_mode
local mode
local lowlevel
+ local snr
config_load network
config_get tone dsl tone
@@ -173,6 +190,7 @@ start_service() {
config_get firmware dsl firmware
config_get xfer_mode dsl xfer_mode
config_get line_mode dsl line_mode
+ config_get snr dsl ds_snr_offset
eval "xtse=\"\${xtse_xdsl_$annex}\""
@@ -262,13 +280,20 @@ start_service() {
lowlevel="-l /tmp/lowlevel.cfg"
}
+ [ -z "${snr}" ] || {
+ # for SNR offset setting
+ autoboot_script "$snr"
+ autoboot="-a /tmp/adsl.scr"
+ }
+
procd_open_instance
procd_set_param command /sbin/vdsl_cpe_control_wrapper \
-i$xtse \
-n /sbin/dsl_notify.sh \
-f ${firmware} \
$lowlevel \
- -M ${mode}
+ -M ${mode} \
+ $autoboot
procd_append_param env "LOAD=$LOAD" "UNLOAD=$UNLOAD"
procd_close_instance
}