The driver maintains elapsed times by repeatedly accumulating the time
since the previous update in a loop. For the elapsed showtime time, the
time difference is truncated to seconds before adding it, leading to a
sizable error over time.
Move the truncation to before calculation of the time difference in
order to remove this error. Also maintain the total elapsed time in the
same way in full seconds, to prevent the unsigned 32-bit counter from
wrapping around after about 50 days.
Testing on a VR9 device shows that the reported line uptime now matches
the actual elapsed wall time. The ADSL variant is only compile-tested,
but it should also work as the relevant code is identical.
Signed-off-by: Jan Hoffmann
---
package/kernel/lantiq/ltq-adsl/Makefile | 2 +-
.../patches/200-fix-elapsed-time.patch| 122 ++
package/kernel/lantiq/ltq-vdsl/Makefile | 2 +-
.../patches/200-fix-elapsed-time.patch| 122 ++
4 files changed, 246 insertions(+), 2 deletions(-)
create mode 100644
package/kernel/lantiq/ltq-adsl/patches/200-fix-elapsed-time.patch
create mode 100644
package/kernel/lantiq/ltq-vdsl/patches/200-fix-elapsed-time.patch
diff --git a/package/kernel/lantiq/ltq-adsl/Makefile
b/package/kernel/lantiq/ltq-adsl/Makefile
index 31874acaca4e..ac9667493386 100644
--- a/package/kernel/lantiq/ltq-adsl/Makefile
+++ b/package/kernel/lantiq/ltq-adsl/Makefile
@@ -10,7 +10,7 @@ include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=ltq-adsl
PKG_VERSION:=3.24.4.4
-PKG_RELEASE:=3
+PKG_RELEASE:=4
PKG_SOURCE:=drv_dsl_cpe_api_danube-$(PKG_VERSION).tar.gz
PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/ltq-dsl-$(BUILD_VARIANT)/drv_dsl_cpe_api-$(PKG_VERSION)
PKG_SOURCE_URL:=@OPENWRT
diff --git a/package/kernel/lantiq/ltq-adsl/patches/200-fix-elapsed-time.patch
b/package/kernel/lantiq/ltq-adsl/patches/200-fix-elapsed-time.patch
new file mode 100644
index ..42ec21437155
--- /dev/null
+++ b/package/kernel/lantiq/ltq-adsl/patches/200-fix-elapsed-time.patch
@@ -0,0 +1,122 @@
+--- a/src/include/drv_dsl_cpe_pm_core.h
b/src/include/drv_dsl_cpe_pm_core.h
+@@ -1525,9 +1525,9 @@ typedef struct
+DSL_boolean_t bShowtimeProcessingStart;
+/** Showtime reached flag*/
+DSL_boolean_t bShowtimeInvTrigger;
+- /** Current Showtime synchronization time to be used, (msec) */
++ /** Current Showtime synchronization time to be used, (sec) */
+DSL_uint32_t nCurrShowtimeTime;
+- /** Showtime synchronization time to be used, (msec) */
++ /** Showtime synchronization time to be used, (sec) */
+DSL_uint32_t nElapsedShowtimeTime;
+/** Actual Line state*/
+DSL_LineStateValue_t nLineState;
+--- a/src/pm/drv_dsl_cpe_api_pm.c
b/src/pm/drv_dsl_cpe_api_pm.c
+@@ -1445,7 +1445,7 @@ DSL_Error_t DSL_DRV_PM_ChannelCountersTo
+}
+
+/* Fill Total Counters elapsed time*/
+- pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime/DSL_PM_MSEC;
++ pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime;
+
+pChCounters =
DSL_DRV_PM_PTR_CHANNEL_COUNTERS_TOTAL(pCounters->nChannel,pCounters->nDirection);
+
+@@ -1501,7 +1501,7 @@ DSL_Error_t DSL_DRV_PM_ChannelCountersEx
+}
+
+/* Fill Total Counters elapsed time*/
+- pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime/DSL_PM_MSEC;
++ pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime;
+
+pChCounters =
DSL_DRV_PM_PTR_CHANNEL_COUNTERS_TOTAL_EXT(pCounters->nChannel);
+
+@@ -2418,7 +2418,7 @@ DSL_Error_t DSL_DRV_PM_DataPathCountersT
+}
+
+/* Fill Total Counters elapsed time*/
+- pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime/DSL_PM_MSEC;
++ pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime;
+
+pDpCounters =
DSL_DRV_PM_PTR_DATAPATH_COUNTERS_TOTAL(pCounters->nChannel,pCounters->nDirection);
+
+@@ -3190,7 +3190,7 @@ DSL_Error_t DSL_DRV_PM_DataPathFailureCo
+}
+
+/* Fill Total Counters elapsed time*/
+- pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime/DSL_PM_MSEC;
++ pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime;
+
+pDpCounters =
DSL_DRV_PM_PTR_DATAPATH_FAILURE_COUNTERS_TOTAL(pCounters->nChannel,pCounters->nDirection);
+
+@@ -3950,7 +3950,7 @@ DSL_Error_t DSL_DRV_PM_LineSecCountersTo
+}
+
+/* Fill Total Counters elapsed time*/
+- pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime/DSL_PM_MSEC;
++ pCounters->total.nElapsedTime =
DSL_DRV_PM_CONTEXT(pContext)->nPmTotalElapsedTime;
+
+pLineCounters =
DSL_DRV_PM_PTR_LINE_SEC_COUNTERS_TOTAL(pCounters->nDirection);
+
+@@ -4602,7 +4602,7 @@ DSL_Error_t DSL_DRV_PM_LineInitCountersT
+}
+
+/* Fill Total Counters elapsed time*/
+- pCounters->total.nElapsedTime =
