def customAssociationControl(self, sta, ap, wlan, ac):
"""Mechanisms that optimize the use of the APs
llf: Least-loaded-first
ssf: Strongest-signal-first"""
if ac == "llf":
apref = sta.params['associatedTo'][wlan]
if apref != '':
ref_llf = len(apref.params['associatedStations'])
if len(ap.params['associatedStations']) + 2 < ref_llf:
debug('iw dev %s disconnect' % sta.params['wlan'][wlan])
sta.pexec('iw dev %s disconnect' %
sta.params['wlan'][wlan])
self.changeAP = True
else:
self.changeAP = True
elif ac == "ssf":
distance = link.getDistance(sta, sta.params['associatedTo'][wlan])
RSSI = link.setRSSI(sta, sta.params['associatedTo'][wlan], wlan,
distance)
refDistance = link.getDistance(sta, ap)
refRSSI = link.setRSSI(sta, ap, wlan, refDistance)
if float(refRSSI) > float(RSSI + 0.1):
debug('iw dev %s disconnect' % sta.params['wlan'][wlan])
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
self.changeAP = True
return self.changeAP
def autoAssociation(self, stations, accessPoints):
"""
This is useful to make the users' life easier
:param stations: list of stations
:param accessPoints: list of access points
"""
nodes = stations + accessPoints
for node in nodes:
for wlan in range(0, len(node.params['wlan'])):
if node.type == 'vehicle' and wlan == 1:
node = node.params['carsta']
wlan = 0
node.setTxPower_(node.params['wlan'][wlan],
node.params['txpower'][wlan])
node.setAntennaGain_(node.params['wlan'][wlan],
node.params['antennaGain'][wlan])
#node.setAntennaHeight_(node.params['wlan'][wlan], node.params['antennaHeight'][wlan])
ap = []
for node in accessPoints:
if 'link' in node.params:
ap.append(node)
nodes = stations + ap
if self.nroads == 0:
for node in stations:
for wlan in range(0, len(node.params['wlan'])):
if node.func[wlan] == 'mesh':
mobility.meshNodes.append(node)
elif node.func[wlan] == 'adhoc':
mobility.adhocNodes.append(node)
for node in nodes:
if 'position' in node.params and 'link' not in node.params:
mobility.accessPoints = accessPoints
mobility.parameters_(node)
for sta in stations:
for wlan in range(0, len(sta.params['wlan'])):
for ap in accessPoints:
if 'position' in sta.params and 'position' in ap.params:
dist = link.getDistance(sta, ap)
if dist <= ap.params['range']:
mobility.handover(sta, ap, wlan)
def autoAssociation(self, stations, accessPoints):
"""
This is useful to make the users' life easier
:param stations: list of stations
:param accessPoints: list of access points
"""
nodes = stations + accessPoints
for node in nodes:
for wlan in range(0, len(node.params['wlan'])):
node.setTxPower_(node.params['wlan'][wlan],
node.params['txpower'][wlan])
ap = []
for node in accessPoints:
if 'link' in node.params:
ap.append(node)
nodes = stations + ap
if not self.isVanet:
for node in stations:
for wlan in range(0, len(node.params['wlan'])):
if node.func[wlan] == 'mesh':
mobility.meshNodes.append(node)
elif node.func[wlan] == 'adhoc':
mobility.adhocNodes.append(node)
for node in nodes:
if 'position' in node.params and 'link' not in node.params:
mobility.accessPoints = accessPoints
mobility.parameters_(node)
for sta in stations:
for wlan in range(0, len(node.params['wlan'])):
for ap in accessPoints:
if 'position' in sta.params and 'position' in ap.params:
dist = link.getDistance(sta, ap)
if dist <= ap.params['range']:
mobility.handover(sta, ap, wlan, dist)
def getDistance(self, src, dst):
dist = link.getDistance(src, dst)
return dist
def pairing(self, node, wlan, nodes):
"""Pairing nodes"""
i = 1
ref_distance = 0
self.dist = 0
alreadyConn = []
for sta_ref in nodes:
if sta_ref != node:
dist = link.getDistance(node, sta_ref)
if dist != 0.0:
totalRange = min(node.params['range'],
sta_ref.params['range'])
if dist < totalRange:
ref_distance = ref_distance + dist
i += 1
for wlan_ref in range(len(sta_ref.params['wlan'])):
if node.params['ssid'][wlan] == sta_ref.params[
'ssid'][wlan_ref]:
if node.params['cell'][wlan] == '':
alreadyConn.append(node)
node.params['associatedTo'][
wlan] = node.params['ssid'][wlan]
node.params['cell'][wlan] = (
'02:CA:FF:EE:BA:0%s' % self.ssid_ID)
iface = node.params['wlan'][wlan]
debug("\nassociating %s to %s..." %
(iface, node.params['ssid'][wlan]))
debug('iwconfig %s essid %s ap 02:CA:FF:EE:BA:0%s' % \
(node.params['wlan'][wlan], node.params['associatedTo'][wlan], self.ssid_ID))
node.pexec('iwconfig %s essid %s ap 02:CA:FF:EE:BA:0%s' % \
(node.params['wlan'][wlan], node.params['associatedTo'][wlan], self.ssid_ID))
node.params['frequency'][
wlan] = link.frequency(node, wlan)
if node.params['cell'][wlan] != sta_ref.params[
'cell'][wlan_ref]:
if sta_ref.params['associatedTo'][
wlan_ref] == node.params['ssid'][
wlan]:
if sta_ref.params['cell'][
wlan_ref] == '' and node in alreadyConn:
alreadyConn.append(sta_ref)
iface = sta_ref.params['wlan'][
wlan_ref]
sta_ref.params['associatedTo'][
wlan_ref] = node.params[
'ssid'][wlan]
sta_ref.params['cell'][
wlan_ref] = (
'02:CA:FF:EE:BA:0%s' %
self.ssid_ID)
debug("\nassociating %s to %s..." %
(iface,
node.params['ssid'][wlan]))
debug('iwconfig %s essid %s ap 02:CA:FF:EE:BA:0%s' % \
(sta_ref.params['wlan'][wlan_ref], sta_ref.params['associatedTo'][wlan_ref], self.ssid_ID))
sta_ref.pexec('iwconfig %s essid %s ap 02:CA:FF:EE:BA:0%s' % \
(sta_ref.params['wlan'][wlan_ref], sta_ref.params['associatedTo'][wlan_ref], self.ssid_ID))
sta_ref.params['frequency'][
wlan_ref] = link.frequency(
sta_ref, wlan_ref)
if alreadyConn != [] and len(alreadyConn) != 1:
for sta_ref in nodes:
if sta_ref not in alreadyConn:
if sta_ref.params['cell'][wlan_ref] == node.params['cell'][
wlan]:
sta_ref.params['cell'][wlan_ref] = ''
self.ssid_ID += 1
self.dist = ref_distance / i
return self.dist
def pairingNodes(self, sta, wlan, nodes, **params):
"""Pairing nodes"""
i = 1
ref_distance = 0
self.ssid_ID += 1
cont = True
par = []
alreadyConn = []
self.list = []
self.list.append(sta)
currentSta = sta
while cont:
if len(par) != 0:
sta = par[0]
par.pop(0)
for ref_sta in nodes:
if ref_sta.type == 'vehicle':
car = ref_sta
ref_sta = ref_sta.params['carsta']
ref_sta.params['position'] = car.params['position']
ref_sta.params['range'] = car.params['range']
if ref_sta != sta and ref_sta.func[wlan] == 'mesh':
dist = link.getDistance(sta, ref_sta)
if dist >= 0.1:
totalRange = int(sta.params['range'])
ref_totalRange = int(ref_sta.params['range'])
if ref_totalRange > totalRange:
totalRange = ref_totalRange
if dist <= totalRange:
cont = True
ref_distance = ref_distance + dist
if currentSta == sta:
self.nodesX.append(sta)
self.nodesY.append(ref_sta)
ssid = sta.params['associatedTo'][wlan]
ref_ssid = ref_sta.params['associatedTo'][wlan]
if ssid != ref_ssid or ssid == sta.params['ssid'][
wlan] or ssid == '':
if sta not in alreadyConn:
if ref_ssid != '' and ref_ssid != ssid:
alreadyConn.append(sta)
sta.params['associatedTo'][
wlan] = ref_sta.params[
'associatedTo'][wlan]
self.meshAssociation(sta, wlan)
elif ssid != sta.params['ssid'][
wlan] + str(self.ssid_ID):
alreadyConn.append(sta)
sta.params['associatedTo'][
wlan] = sta.params['ssid'][
wlan] + str(self.ssid_ID)
self.meshAssociation(sta, wlan)
if ref_sta not in alreadyConn:
alreadyConn.append(ref_sta)
ref_sta.params['associatedTo'][
wlan] = sta.params['ssid'][wlan] + str(
self.ssid_ID)
self.meshAssociation(ref_sta, wlan)
if ref_sta not in self.list:
par.append(ref_sta)
self.list.append(ref_sta)
i += 1
if len(par) == 0:
cont = False
self.ssid_ID += 1
dist = ref_distance / i
return dist
def customMeshRouting(self, sta, wlan, stations):
"""Custom Mesh Routing"""
associate = False
controlMeshMac = []
command = ''
for ref_sta in stations:
if ref_sta.type == 'vehicle':
ref_sta = ref_sta.params['carsta']
for ref_wlan in range(len(ref_sta.params['wlan'])):
if ref_sta != sta and ref_sta.func[
ref_wlan] == 'mesh' and 'position' in sta.params:
dist = link.getDistance(sta, ref_sta)
range_ = int(sta.params['range'])
refRange_ = int(ref_sta.params['range'])
if refRange_ > range_:
range_ = refRange_
if dist <= range_:
if ref_sta.func[ref_wlan] == 'mesh':
if sta.params['associatedTo'][
wlan] == ref_sta.params['associatedTo'][
ref_wlan]:
associate = True
if WmediumdServerConn.connected:
if not WmediumdServerConn.interference_enabled:
cls = Association
cls.setSNRWmediumd(
sta, ref_sta,
sta.params['snr'][wlan])
else:
link(sta=sta, wlan=wlan, dist=dist)
elif 'position' not in sta.params:
associate = True
"""Adding all reached target paths"""
if associate:
exist = []
sta_ref = []
sta_ref.append(sta)
j = 0
exist.append(sta)
while j < len(stations):
j += 1
if sta_ref == []:
break
else:
newsta = sta_ref[0]
for sta1, sta2 in zip(listNodes.nodesX, listNodes.nodesY):
if sta1 == sta and sta2 not in exist:
command = 'iw dev %s mpath new %s next_hop %s' % (sta.params['wlan'][wlan], \
sta2.params['mac'][wlan], sta2.params['mac'][wlan])
debug('\n' + command)
sta.pexec(command)
exist.append(sta2)
controlMeshMac.append(sta2.params['mac'][wlan])
sta_ref.append(sta2)
elif sta1 == newsta and sta2 not in exist:
command = 'iw dev %s mpath new %s next_hop %s' % (sta.params['wlan'][wlan], \
sta2.params['mac'][wlan], sta1.params['mac'][wlan])
debug('\n' + command)
sta.pexec(command)
exist.append(sta2)
controlMeshMac.append(sta2.params['mac'][wlan])
sta_ref.append(sta2)
if newsta in sta_ref:
sta_ref.remove(newsta)
"""delete unknown paths"""
if associate:
for ref_sta in stations:
for ref_wlan in range(len(ref_sta.params['wlan'])):
if ref_sta != sta and ref_sta.func[ref_wlan] == 'mesh':
if ref_sta.type == 'vehicle':
ref_wlan = 0
ref_sta = ref_sta.params['carsta']
if ref_sta.params['mac'][
ref_wlan] not in controlMeshMac:
sta.pexec('iw dev %s mpath del %s' %
(sta.params['wlan'][wlan],
ref_sta.params['mac'][ref_wlan]))
if not WmediumdServerConn.connected:
cls = Association
cls.setSNRWmediumd(sta, ref_sta, -10)
"""mesh leave"""
if associate == False:
debug('\niw dev %s mesh leave' % sta.params['wlan'][wlan])
sta.pexec('iw dev %s mesh leave' % sta.params['wlan'][wlan])
sta.params['associatedTo'][wlan] = ''