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//lib/python3.6/site-packages/pyroute2/netlink/rtnl/tcmsg/sched_codel.py

import logging
from pyroute2.netlink import nla
from pyroute2.netlink.rtnl import TC_H_ROOT
from pyroute2.netlink.rtnl.tcmsg.common import get_time
from pyroute2.netlink.rtnl.tcmsg.common import stats2 as c_stats2

log = logging.getLogger(__name__)
parent = TC_H_ROOT

def get_parameters(kwarg):
    #
    # ACHTUNG: experimental code
    #
    # Parameters naming scheme WILL be changed in next releases
    #
    ret = {'attrs': []}
    transform = {'cdl_limit': lambda x: x,
                 'cdl_ecn': lambda x: x,
                 'cdl_target': get_time,
                 'cdl_ce_threshold': get_time,
                 'cdl_interval': get_time}
    for key in transform.keys():
        if key in kwarg:
            log.warning('codel parameters naming will be changed '
                        'in next releases (%s)' % key)
            ret['attrs'].append(['TCA_CODEL_%s' % key[4:].upper(),
                                 transform[key](kwarg[key])])
    return ret

class options(nla):
    nla_map = (('TCA_CODEL_UNSPEC', 'none'),
               ('TCA_CODEL_TARGET', 'uint32'),
               ('TCA_CODEL_LIMIT', 'uint32'),
               ('TCA_CODEL_INTERVAL', 'uint32'),
               ('TCA_CODEL_ECN', 'uint32'),
               ('TCA_CODEL_CE_THRESHOLD', 'uint32'))

class stats(nla):
    fields = (('maxpacket', 'I'),
              ('count', 'I'),
              ('lastcount', 'I'),
              ('ldelay', 'I'),
              ('drop_next', 'I'),
              ('drop_overlimit', 'I'),
              ('ecn_mark', 'I'),
              ('dropping', 'I'),
              ('ce_mark', 'I'))

class stats2(c_stats2):
    class stats_app(stats):
        pass