def _add_resolved_route(self, vlan, ip_gw, ip_dst, eth_dst, is_updated=None):
ofmsgs = []
if is_updated is not None:
in_match = self.valve_in_match(
self.fib_table, vlan=vlan,
eth_type=self._eth_type(), nw_dst=ip_dst)
prefixlen = ipaddr.IPNetwork(ip_dst).prefixlen
priority = self.route_priority + prefixlen
if is_updated:
self.logger.info(
'Updating next hop for route %s via %s (%s)',
ip_dst, ip_gw, eth_dst)
ofmsgs.extend(self.valve_flowdel(
self.fib_table,
in_match,
priority=priority))
else:
self.logger.info(
'Adding new route %s via %s (%s)',
ip_dst, ip_gw, eth_dst)
ofmsgs.append(self.valve_flowmod(
self.fib_table,
in_match,
priority=priority,
inst=[valve_of.apply_actions(
[valve_of.set_eth_src(self.faucet_mac),
valve_of.set_eth_dst(eth_dst),
valve_of.dec_ip_ttl()])] +
[valve_of.goto_table(self.eth_dst_table)]))
now = time.time()
link_neighbor = LinkNeighbor(eth_dst, now)
neighbor_cache = self._vlan_neighbor_cache(vlan)
neighbor_cache[ip_gw] = link_neighbor
return ofmsgs
def _add_resolved_route(self, vlan, ip_gw, ip_dst, eth_dst, is_updated=None):
ofmsgs = []
if is_updated is not None:
in_match = self.valve_in_match(
self.fib_table, vlan=vlan,
eth_type=self._eth_type(), nw_dst=ip_dst)
prefixlen = ipaddr.IPNetwork(ip_dst).prefixlen
priority = self.route_priority + prefixlen
if is_updated:
self.logger.info(
'Updating next hop for route %s via %s (%s)',
ip_dst, ip_gw, eth_dst)
ofmsgs.extend(self.valve_flowdel(
self.fib_table,
in_match,
priority=priority))
else:
self.logger.info(
'Adding new route %s via %s (%s)',
ip_dst, ip_gw, eth_dst)
ofmsgs.append(self.valve_flowmod(
self.fib_table,
in_match,
priority=priority,
inst=[valve_of.apply_actions(
[valve_of.set_eth_src(self.faucet_mac),
valve_of.set_eth_dst(eth_dst),
valve_of.dec_ip_ttl()])] +
[valve_of.goto_table(self.eth_dst_table)]))
now = time.time()
link_neighbor = LinkNeighbor(eth_dst, now)
neighbor_cache = self._vlan_neighbor_cache(vlan)
neighbor_cache[ip_gw] = link_neighbor
return ofmsgs
def _add_resolved_route(self, vlan, ip_gw, ip_dst, eth_dst, is_updated=None):
ofmsgs = []
if is_updated is not None:
in_match = self.valve_in_match(
self.fib_table, vlan=vlan,
eth_type=self._eth_type(), nw_dst=ip_dst)
prefixlen = ipaddr.IPNetwork(ip_dst).prefixlen
priority = self.route_priority + prefixlen
if is_updated:
self.logger.info(
'Updating next hop for route %s via %s (%s)',
ip_dst, ip_gw, eth_dst)
ofmsgs.extend(self.valve_flowdel(
self.fib_table,
in_match,
priority=priority))
else:
self.logger.info(
'Adding new route %s via %s (%s)',
ip_dst, ip_gw, eth_dst)
if self.use_group_table:
inst = [valve_of.apply_actions([valve_of.group_act(
group_id=self.ip_gw_to_group_id[ip_gw])])]
else:
inst = [valve_of.apply_actions([
valve_of.set_eth_src(self.faucet_mac),
valve_of.set_eth_dst(eth_dst),
valve_of.dec_ip_ttl()]),
valve_of.goto_table(self.eth_dst_table)]
ofmsgs.append(self.valve_flowmod(
self.fib_table,
in_match,
priority=priority,
inst=inst))
return ofmsgs
def _nexthop_actions(self, eth_dst, vlan):
ofmsgs = []
if self.routers:
ofmsgs.append(valve_of.set_vlan_vid(vlan.vid))
ofmsgs.extend([
valve_of.set_eth_src(self.faucet_mac),
valve_of.set_eth_dst(eth_dst),
valve_of.dec_ip_ttl()])
return ofmsgs
def _update_nexthop(self, vlan, in_port, eth_src, resolved_ip_gw):
ofmsgs = []
is_updated = None
routes = self._vlan_routes(vlan)
group_mod_method = None
group_id = None
nexthop_cache_entry = self._vlan_nexthop_cache_entry(
vlan, resolved_ip_gw)
if (nexthop_cache_entry is not None and
nexthop_cache_entry.eth_src is not None):
cached_eth_dst = nexthop_cache_entry.eth_src
if cached_eth_dst != eth_src:
is_updated = True
if self.use_group_table:
group_mod_method = valve_of.groupmod
group_id = self.ip_gw_to_group_id[resolved_ip_gw]
else:
is_updated = False
if self.use_group_table:
group_mod_method = valve_of.groupadd
group_id = self._group_id_from_ip_gw(resolved_ip_gw)
self.ip_gw_to_group_id[resolved_ip_gw] = group_id
if is_updated is not None:
if self.use_group_table:
actions = []
actions.extend([
valve_of.set_eth_src(self.faucet_mac),
valve_of.set_eth_dst(eth_src),
valve_of.dec_ip_ttl()])
if not vlan.port_is_tagged(in_port):
actions.append(valve_of.pop_vlan())
actions.append(valve_of.output_port(in_port))
ofmsgs.append(group_mod_method(
group_id=group_id,
buckets=[valve_of.bucket(actions=actions)]))
for ip_dst, ip_gw in routes.iteritems():
if ip_gw == resolved_ip_gw:
ofmsgs.extend(self._add_resolved_route(
vlan, ip_gw, ip_dst, eth_src, is_updated))
self._update_nexthop_cache(vlan, eth_src, resolved_ip_gw)
return ofmsgs
def _nexthop_actions(self, eth_dst):
return [
valve_of.set_eth_src(self.faucet_mac),
valve_of.set_eth_dst(eth_dst),
valve_of.dec_ip_ttl()
]
def _nexthop_actions(self, eth_dst):
return [
valve_of.set_eth_src(self.faucet_mac),
valve_of.set_eth_dst(eth_dst),
valve_of.dec_ip_ttl()]
