def build_inbound_rules_for(participant_id, in_policies, ss_instance, final_switch):
"Given a subset of inbound policies, return all the resulting rules."
rules = []
for policy in in_policies:
if "fwd" not in policy["action"]:
continue
port_num = policy["action"]["fwd"]
# match on the next-hop
vmac_bitmask = vmac_next_hop_mask(ss_instance)
vmac = vmac_next_hop_match(participant_id, ss_instance)
match_args = policy["match"]
match_args["eth_dst"] = (vmac, vmac_bitmask)
port_num = policy["action"]["fwd"]
new_vmac = vmac_part_port_match(participant_id, port_num, ss_instance)
actions = {"set_eth_dst":new_vmac, "fwd":[final_switch]}
rule = {"rule_type":"inbound", "priority":INBOUND_HIT_PRIORITY,
"match":match_args, "action":actions, "mod_type":"insert",
"cookie":(policy["cookie"],2**16-1)}
rules.append(rule)
return rules
def build_inbound_rules_for(participant_id, in_policies, ss_instance, final_switch):
"Given a subset of inbound policies, return all the resulting rules."
rules = []
for policy in in_policies:
if "fwd" not in policy["action"]:
continue
port_num = policy["action"]["fwd"]
# match on the next-hop
vmac_bitmask = vmac_next_hop_mask(ss_instance)
vmac = vmac_next_hop_match(participant_id, ss_instance)
match_args = policy["match"]
match_args["eth_dst"] = (vmac, vmac_bitmask)
port_num = policy["action"]["fwd"]
new_vmac = vmac_part_port_match(participant_id, port_num, ss_instance)
actions = {"set_eth_dst": new_vmac, "fwd": [final_switch]}
rule = {
"rule_type": "inbound",
"priority": INBOUND_HIT_PRIORITY,
"match": match_args,
"action": actions,
"mod_type": "insert",
"cookie": (policy["cookie"], 2 ** 16 - 1),
}
rules.append(rule)
return rules
def process_arp_request(self, part_mac, vnh):
vmac = ""
if self.cfg.isSupersetsMode():
vmac = self.supersets.get_vmac(self, vnh)
else:
vmac = "whoa" # MDS vmac goes here
arp_responses = list()
# if this is gratuitous, send a reply to the part's ID
if part_mac is None:
gratuitous = True
# set fields appropriately for gratuitous arps
i = 0
for port in self.cfg.ports:
eth_dst = vmac_part_port_match(self.id, i, self.supersets,
False)
arp_responses.append({
'SPA': vnh,
'TPA': vnh,
'SHA': vmac,
'THA': vmac,
'eth_src': vmac,
'eth_dst': eth_dst
})
i += 1
else: # if it wasn't gratuitous
gratuitous = False
# dig up the IP of the target participant
for port in self.cfg.ports:
if part_mac == port["MAC"]:
part_ip = port["IP"]
break
# set field appropriately for arp responses
arp_responses.append({
'SPA': vnh,
'TPA': part_ip,
'SHA': vmac,
'THA': part_mac,
'eth_src': vmac,
'eth_dst': part_mac
})
if gratuitous:
self.logger.debug("Sending Gratuitious ARP: " + str(arp_responses))
else:
self.logger.debug("Sending ARP Response: " + str(arp_responses))
for arp_response in arp_responses:
arp_response['msgType'] = 'garp'
self.arp_client.send(arp_response)
def process_arp_request(self, part_mac, vnh):
vmac = ""
if self.cfg.isSupersetsMode():
vmac = self.supersets.get_vmac(self, vnh)
else:
vmac = "whoa" # MDS vmac goes here
arp_responses = list()
# if this is gratuitous, send a reply to the part's ID
if part_mac is None:
gratuitous = True
# set fields appropriately for gratuitous arps
i = 0
for port in self.cfg.ports:
eth_dst = vmac_part_port_match(self.id, i, self.supersets, False)
arp_responses.append({'SPA': vnh, 'TPA': vnh,
'SHA': vmac, 'THA': vmac,
'eth_src': vmac, 'eth_dst': eth_dst})
i += 1
else: # if it wasn't gratuitous
gratuitous = False
# dig up the IP of the target participant
for port in self.cfg.ports:
if part_mac == port["MAC"]:
part_ip = port["IP"]
break
# set field appropriately for arp responses
arp_responses.append({'SPA': vnh, 'TPA': part_ip,
'SHA': vmac, 'THA': part_mac,
'eth_src': vmac, 'eth_dst': part_mac})
if gratuitous:
self.logger.debug("Sending Gratuitious ARP: "+str(arp_responses))
else:
self.logger.debug("Sending ARP Response: "+str(arp_responses))
for arp_response in arp_responses:
arp_response['msgType'] = 'garp'
self.arp_client.send(arp_response)
