def get_class_parameters(kwarg):
ret = {'attrs': []}
for key in ('rsc', 'fsc', 'usc'):
if key in kwarg:
ret['attrs'].append(['TCA_HFSC_%s' % key.upper(),
{'m1': get_rate(kwarg[key].get('m1', 0)),
'd': get_time(kwarg[key].get('d', 0)),
'm2':get_rate(kwarg[key].get('m2', 0))}])
return ret
def get_class_parameters(kwarg):
ret = {'attrs': []}
for key in ('rsc', 'fsc', 'usc'):
if key in kwarg:
ret['attrs'].append([
'TCA_HFSC_%s' % key.upper(), {
'm1': get_rate(kwarg[key].get('m1', 0)),
'd': get_time(kwarg[key].get('d', 0)),
'm2': get_rate(kwarg[key].get('m2', 0))
}
])
return ret
def get_class_parameters(kwarg):
prio = kwarg.get('prio', 0)
mtu = kwarg.get('mtu', 1600)
mpu = kwarg.get('mpu', 0)
overhead = kwarg.get('overhead', 0)
quantum = kwarg.get('quantum', 0)
rate = get_rate(kwarg.get('rate', None))
ceil = get_rate(kwarg.get('ceil', 0)) or rate
burst = kwarg.get('burst', None) or \
kwarg.get('maxburst', None) or \
kwarg.get('buffer', None)
if rate is not None:
if burst is None:
burst = rate / get_hz() + mtu
burst = calc_xmittime(rate, burst)
cburst = kwarg.get('cburst', None) or \
kwarg.get('cmaxburst', None) or \
kwarg.get('cbuffer', None)
if ceil is not None:
if cburst is None:
cburst = ceil / get_hz() + mtu
cburst = calc_xmittime(ceil, cburst)
return {
'attrs': [[
'TCA_HTB_PARMS', {
'buffer': burst,
'cbuffer': cburst,
'quantum': quantum,
'prio': prio,
'rate': rate,
'ceil': ceil,
'ceil_overhead': overhead,
'rate_overhead': overhead,
'rate_mpu': mpu,
'ceil_mpu': mpu
}
], ['TCA_HTB_RTAB', True], ['TCA_HTB_CTAB', True]]
}
def get_parameters(kwarg):
# The code is ported from iproute2
avpkt = 1000
probability = 0.02
opt = {
'limit': kwarg['limit'], # required
'qth_min': kwarg.get('min', 0),
'qth_max': kwarg.get('max', 0),
'Wlog': 0,
'Plog': 0,
'Scell_log': 0,
'flags': 1 if kwarg.get('ecn') else 0
}
rate = get_rate(kwarg['bandwith']) # required
burst = kwarg.get('burst', 0)
avpkt = get_size(kwarg.get('avpkt', 1000))
probability = kwarg.get('probability', 0.02)
if not opt['qth_max']:
opt['qth_max'] = opt['limit'] // 4
if not opt['qth_min']:
opt['qth_min'] = opt['qth_max'] // 3
if not burst:
burst = (2 * opt['qth_min'] + opt['qth_max']) // 3
if opt['qth_max'] > opt['limit']:
raise Exception('max is larger than limit')
if opt['qth_min'] >= opt['qth_max']:
raise Exception('min is not smaller than max')
# Wlog
opt['Wlog'] = red_eval_ewma(opt['qth_min'] * avpkt, burst, avpkt)
if opt['Wlog'] < 0:
raise Exception('failed to calculate EWMA')
elif opt['Wlog'] > 10:
log.warning('choke: burst %s seems to be too large' % burst)
# Plog
opt['Plog'] = red_eval_P(opt['qth_min'] * avpkt, opt['qth_max'] * avpkt,
probability)
if opt['Plog'] < 0:
raise Exception('choke: failed to calculate probability')
# Scell_log, stab
opt['Scell_log'], stab = red_eval_idle_damping(opt['Wlog'], avpkt, rate)
if opt['Scell_log'] < 0:
raise Exception('choke: failed to calculate idle damping table')
return {
'attrs': [['TCA_CHOKE_PARMS', opt], ['TCA_CHOKE_STAB', stab],
['TCA_CHOKE_MAX_P',
int(probability * pow(2, 32))]]
}
def get_class_parameters(kwarg):
prio = kwarg.get('prio', 0)
mtu = kwarg.get('mtu', 1600)
mpu = kwarg.get('mpu', 0)
overhead = kwarg.get('overhead', 0)
quantum = kwarg.get('quantum', 0)
rate = get_rate(kwarg.get('rate', None))
ceil = get_rate(kwarg.get('ceil', 0)) or rate
burst = kwarg.get('burst', None) or \
kwarg.get('maxburst', None) or \
kwarg.get('buffer', None)
if rate is not None:
if burst is None:
burst = rate / get_hz() + mtu
burst = calc_xmittime(rate, burst)
cburst = kwarg.get('cburst', None) or \
kwarg.get('cmaxburst', None) or \
kwarg.get('cbuffer', None)
if ceil is not None:
if cburst is None:
cburst = ceil / get_hz() + mtu
cburst = calc_xmittime(ceil, cburst)
return {'attrs': [['TCA_HTB_PARMS', {'buffer': burst,
'cbuffer': cburst,
'quantum': quantum,
'prio': prio,
'rate': rate,
'ceil': ceil,
'ceil_overhead': overhead,
'rate_overhead': overhead,
'rate_mpu': mpu,
'ceil_mpu': mpu}],
['TCA_HTB_RTAB', True],
['TCA_HTB_CTAB', True]]}
def get_parameters(kwarg):
# The code is ported from iproute2
avpkt = 1000
probability = 0.02
opt = {'limit': kwarg['limit'], # required
'qth_min': kwarg.get('min', 0),
'qth_max': kwarg.get('max', 0),
'Wlog': 0,
'Plog': 0,
'Scell_log': 0,
'flags': 1 if kwarg.get('ecn') else 0}
rate = get_rate(kwarg['bandwith']) # required
burst = kwarg.get('burst', 0)
avpkt = get_size(kwarg.get('avpkt', 1000))
probability = kwarg.get('probability', 0.02)
if not opt['qth_max']:
opt['qth_max'] = opt['limit'] // 4
if not opt['qth_min']:
opt['qth_min'] = opt['qth_max'] // 3
if not burst:
burst = (2 * opt['qth_min'] + opt['qth_max']) // 3
if opt['qth_max'] > opt['limit']:
raise Exception('max is larger than limit')
if opt['qth_min'] >= opt['qth_max']:
raise Exception('min is not smaller than max')
# Wlog
opt['Wlog'] = red_eval_ewma(opt['qth_min']*avpkt,
burst,
avpkt)
if opt['Wlog'] < 0:
raise Exception('failed to calculate EWMA')
elif opt['Wlog'] > 10:
log.warning('choke: burst %s seems to be too large' % burst)
# Plog
opt['Plog'] = red_eval_P(opt['qth_min']*avpkt,
opt['qth_max']*avpkt,
probability)
if opt['Plog'] < 0:
raise Exception('choke: failed to calculate probability')
# Scell_log, stab
opt['Scell_log'], stab = red_eval_idle_damping(opt['Wlog'], avpkt, rate)
if opt['Scell_log'] < 0:
raise Exception('choke: failed to calculate idle damping table')
return {'attrs': [['TCA_CHOKE_PARMS', opt],
['TCA_CHOKE_STAB', stab],
['TCA_CHOKE_MAX_P', int(probability * pow(2, 32))]]}
