[pisa-src] r2261 - in trunk/tools: auto-handover-n900.sh iwlist_parser.c
- From: René Hummen <rene.hummen@xxxxxxxxxxxxxx>
- To: pisa-src@xxxxxxxxxxxxx
- Date: Thu, 08 Apr 2010 17:36:06 +0200
Author: hummen
Date: Thu Apr 8 17:36:05 2010
New Revision: 2261
Log:
added auto-handover script for n900
please test, if this also works on other devices and rename
Added:
trunk/tools/auto-handover-n900.sh (contents, props changed)
Modified:
trunk/tools/iwlist_parser.c
Added: trunk/tools/auto-handover-n900.sh
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/tools/auto-handover-n900.sh Thu Apr 8 17:36:05 2010 (r2261)
@@ -0,0 +1,77 @@
+#!/bin/sh
+
+WIFI_IF="wlan0"
+PATTERN="pisa-testbed-demo"
+SLEEP_TIME=1
+
+set -u
+
+echo "This file searches APs with SSID $PATTERN* and switches to the strongest
signal"
+
+## internal parameters
+LAST_AP="00:00:00:00:00:00"
+CURRENT_AP="00:00:00:00:00:00"
+UNASSOC_COUNTER=0
+OOR_COUNTER=0
+DO_HANDOVER=0
+CHECK_DELAY=10
+
+get_current_ap () {
+ CURRENT_AP=$(iwconfig ${WIFI_IF} | grep "Access Point:" | tr -s " " | cut
-d" " -f 7)
+}
+
+check_legacy_handover () {
+ if [ "${CURRENT_AP}" = "Not-Associated" ]; then
+ UNASSOC_COUNTER=$((${UNASSOC_COUNTER} + 1))
+ echo "WARNING: client not associated (count=${UNASSOC_COUNTER})"
+ LAST_AP="00:00:00:00:00:00"
+ elif [ "${LAST_AP}" = "00:00:00:00:00:00" ]; then
+ echo "connected to: ${CURRENT_AP}"
+ LAST_AP=${CURRENT_AP}
+ DO_HANDOVER=1
+ elif [ "${CURRENT_AP}" != "${LAST_AP}" ]; then
+ echo "legacy handover to: ${CURRENT_AP}"
+ DO_HANDOVER=1
+ fi
+}
+
+check_best_ap () {
+ CURRENT_AP=$(iwlist $WIFI_IF scan | iwlist_parser -s $PATTERN | tr -s " " |
cut -d" " -f 1)
+
+ if [ "${CURRENT_AP}" = "NONE" ]; then
+ OOR_COUNTER=$((${OOR_COUNTER} + 1))
+ echo "WARNING: PISA APs out of range (count=${OOR_COUNTER})"
+ elif [ "${LAST_AP}" != "${CURRENT_AP}" ]; then
+ echo "forced handover to: ${CURRENT_AP}"
+ iwconfig ${WIFI_IF} ap ${CURRENT_AP} # essid ${result[1]}
+ DO_HANDOVER=1
+ fi
+}
+
+trigger_hip_update () {
+ if ps | grep "hipd" | grep -v "grep"; then
+ echo "triggering HIP update"
+ hipconf manual-update $WIFI_IF
+ fi
+}
+
+while sleep ${SLEEP_TIME}; do
+ get_current_ap
+ check_legacy_handover
+ if [ ${CHECK_DELAY} -gt 0 ]; then
+ CHECK_DELAY=$((${CHECK_DELAY} - 1))
+ fi
+ if [ $DO_HANDOVER = 0 -a ${CHECK_DELAY} = 0 ]; then
+ check_best_ap
+ CHECK_DELAY=2
+ fi
+ if [ $DO_HANDOVER = 1 ]; then
+ trigger_hip_update
+ LAST_AP=${CURRENT_AP}
+ UNASSOC_COUNTER=0
+ OOR_COUNTER=0
+ CHECK_DELAY=10
+ DO_HANDOVER=0
+ fi
+done
+
Modified: trunk/tools/iwlist_parser.c
==============================================================================
--- trunk/tools/iwlist_parser.c Thu Apr 8 15:20:36 2010 (r2260)
+++ trunk/tools/iwlist_parser.c Thu Apr 8 17:36:05 2010 (r2261)
@@ -163,7 +163,7 @@
j++;
}
strEssid[iCellNumber - 1][j] = '\0';
- printf("Essid: %s \n", strEssid[iCellNumber - 1]);
+ dbg_printf("Essid: %s \n", strEssid[iCellNumber - 1]);
step = 4;
pTokens = strtok(NULL, " ");
continue;
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