def _install_redirect_flow(self, imsi, ip_addr, rule, version):
rule_num = self._rule_mapper.get_or_create_rule_num(rule.id)
# CWF generates an internal IP for redirection so ip_addr is not needed
if self._setup_type == 'CWF':
ip_addr_str = None
elif ip_addr and ip_addr.address:
ip_addr_str = ip_addr.address.decode('utf-8')
priority = rule.priority
# TODO currently if redirection is enabled we ignore other flows
# from rule.flow_list, confirm that this is the expected behaviour
redirect_request = RedirectionManager.RedirectRequest(
imsi=imsi,
ip_addr=ip_addr_str,
rule=rule,
rule_num=rule_num,
rule_version=version,
priority=priority,
)
try:
if self._setup_type == 'CWF':
self._redirect_manager.setup_cwf_redirect(
self._datapath, self.loop, redirect_request,
)
else:
self._redirect_manager.setup_lte_redirect(
self._datapath, self.loop, redirect_request,
)
return RuleModResult.SUCCESS
except RedirectException as err:
self.logger.error(
'Redirect Exception for imsi %s, rule.id - %s : %s',
imsi, rule.id, err,
)
return RuleModResult.FAILURE
def _install_redirect_flow(self, imsi, ip_addr, rule):
rule_num = self._rule_mapper.get_or_create_rule_num(rule.id)
rule_version = self._session_rule_version_mapper.get_version(imsi,
ip_addr,
rule.id)
priority = rule.priority
# TODO currently if redirection is enabled we ignore other flows
# from rule.flow_list, confirm that this is the expected behaviour
redirect_request = RedirectionManager.RedirectRequest(
imsi=imsi,
ip_addr=ip_addr.address.decode('utf-8'),
rule=rule,
rule_num=rule_num,
rule_version=rule_version,
priority=priority)
try:
if self._setup_type == 'CWF':
self._redirect_manager.setup_cwf_redirect(
self._datapath, self.loop, redirect_request)
else:
self._redirect_manager.setup_lte_redirect(
self._datapath, self.loop, redirect_request)
return RuleModResult.SUCCESS
except RedirectException as err:
self.logger.error(
'Redirect Exception for imsi %s, rule.id - %s : %s',
imsi, rule.id, err
)
return RuleModResult.FAILURE
def _install_redirect_flow(self, imsi, ip_addr, rule, version):
rule_num = self._rule_mapper.get_or_create_rule_num(rule.id)
priority = Utils.get_of_priority(rule.priority)
redirect_request = RedirectionManager.RedirectRequest(
imsi=imsi,
ip_addr=ip_addr.address.decode('utf-8'),
rule=rule,
rule_num=rule_num,
rule_version=version,
priority=priority,
)
try:
self._redirect_manager.setup_lte_redirect(
self._datapath,
self.loop,
redirect_request,
)
return RuleModResult.SUCCESS
except RedirectException as err:
self.logger.error(
'Redirect Exception for imsi %s, rule.id - %s : %s',
imsi,
rule.id,
err,
)
return RuleModResult.FAILURE
def _install_flow_for_rule(self, imsi, ip_addr, rule):
"""
Install a flow to get stats for a particular rule. Flows will match on
IMSI, cookie (the rule num), in/out direction
Args:
imsi (string): subscriber to install rule for
ip_addr (string): subscriber session ipv4 address
rule (PolicyRule): policy rule proto
"""
rule_num = self._rule_mapper.get_or_create_rule_num(rule.id)
priority = self.get_of_priority(rule.priority)
ul_qos = rule.qos.max_req_bw_ul
dl_qos = rule.qos.max_req_bw_dl
if rule.redirect.support == rule.redirect.ENABLED:
# TODO currently if redirection is enabled we ignore other flows
# from rule.flow_list, confirm that this is the expected behaviour
redirect_request = RedirectionManager.RedirectRequest(
imsi=imsi,
ip_addr=ip_addr,
rule=rule,
rule_num=rule_num,
priority=priority)
try:
self._redirect_manager.handle_redirection(
self._datapath, self.loop, redirect_request)
return RuleModResult.SUCCESS
except RedirectException as err:
self.logger.error(
'Redirect Exception for imsi %s, rule.id - %s : %s',
imsi, rule.id, err
)
return RuleModResult.FAILURE
if not rule.flow_list:
self.logger.error('The flow list for imsi %s, rule.id - %s'
'is empty, this shoudn\'t happen', imsi, rule.id)
return RuleModResult.FAILURE
flow_adds = []
for flow in rule.flow_list:
try:
flow_adds.append(self._get_classify_rule_flow_msg(
imsi, flow, rule_num, priority, ul_qos,
dl_qos, rule.hard_timeout,
rule.id))
except FlowMatchError as err: # invalid match
self.logger.error(
"Failed to install rule %s for subscriber %s: %s",
rule.id, imsi, err)
return RuleModResult.FAILURE
chan = self._msg_hub.send(flow_adds, self._datapath)
return self._wait_for_responses(imsi, rule, chan)
def _install_redirect_flow(self, imsi, ip_addr, rule):
rule_num = self._rule_mapper.get_or_create_rule_num(rule.id)
priority = self.get_of_priority(rule.priority)
redirect_request = RedirectionManager.RedirectRequest(
imsi=imsi,
ip_addr=ip_addr,
rule=rule,
rule_num=rule_num,
priority=priority)
try:
self._redirect_manager.handle_redirection(self._datapath,
self.loop,
redirect_request)
return RuleModResult.SUCCESS
except RedirectException as err:
self.logger.error(
'Redirect Exception for imsi %s, rule.id - %s : %s', imsi,
rule.id, err)
return RuleModResult.FAILURE
