def build_north_to_south(dp, route,
idle_timeout=0, hard_timeout=0):
parser = dp.ofproto_parser
public_ip = ip.ipv4_to_int(route['public_ip'])
max_link = len(route['endpoints']) - 1
north_ofport = cfg.CONF.flows.northbound_ofport
south_ofport = cfg.CONF.flows.southbound_ofport
for link, endpoint in enumerate(route['endpoints']):
actions = [parser.NXActionResubmitTable(table=100)]
match = build_rule(in_port=north_ofport, nw_dst=public_ip)
add_flow(dp, actions=actions, match=match, cookie=public_ip,
idle_timeout=idle_timeout, hard_timeout=hard_timeout)
# table 100
bmf = build_multipath
bmf(dp, public_ip, max_link,
idle_timeout=idle_timeout, hard_timeout=hard_timeout)
private_ip = ip.ipv4_to_int(endpoint['private_ip'])
# table 110
actions = [parser.OFPActionSetNwDst(private_ip),
parser.OFPActionOutput(port=south_ofport)]
rule = build_rule(registers={1: link}, nw_dst=public_ip)
add_flow(dp, table_id=110, actions=actions, match=rule,
cookie=public_ip, idle_timeout=idle_timeout,
hard_timeout=hard_timeout)
def build_rule(in_port=None, nw_dst=None, nw_src=None, nw_proto=None,
dl_dst=None, dl_src=None, registers=None, tun_id=None,
dl_type=None):
rule = ClsRule()
if in_port is not None:
rule.set_in_port(in_port)
if dl_dst is not None:
dl_dst = haddr_to_bin(dl_dst)
rule.set_dl_dst(dl_dst)
if dl_src is not None:
dl_src = haddr_to_bin(dl_src)
rule.set_dl_src(dl_src)
if dl_type is None and (nw_dst is not None or nw_src is not None):
dl_type = ether_types.ETH_TYPE_IP
if dl_type is not None:
rule.set_dl_type(dl_type)
if nw_dst is not None:
if isinstance(nw_dst, dict):
nw_dst = nw_dst['destination']
if isinstance(nw_dst, six.string_types):
nw_dst = ip.ipv4_to_int(nw_dst)
if isinstance(nw_dst, tuple):
rule.set_nw_dst_masked(nw_dst[0], nw_dst[1])
else:
rule.set_nw_dst(nw_dst)
if nw_src is not None:
if isinstance(nw_src, dict):
nw_src = nw_src['destination']
if isinstance(nw_src, six.string_types):
nw_src = ip.ipv4_to_int(nw_src)
if isinstance(nw_src, tuple):
rule.set_nw_src_masked(nw_src[0], nw_src[1])
else:
rule.set_nw_src(nw_src)
if registers is not None:
for k, v in registers.iteritems():
rule.set_reg(k, v)
if tun_id is not None:
rule.set_tun_id(tun_id)
if nw_proto is not None:
rule.set_nw_proto(nw_proto)
return rule
def build_south_to_north(dp, floating_ip,
drop_flows=False, idle_timeout=0, hard_timeout=0):
parser = dp.ofproto_parser
public_ip = ip.ipv4_to_int(floating_ip['public_ip'])
north_ofport = cfg.CONF.flows.northbound_ofport
south_ofport = cfg.CONF.flows.southbound_ofport
for endpoint in floating_ip['endpoints']:
private_ip = ip.ipv4_to_int(endpoint['private_ip'])
rule = build_rule(in_port=south_ofport, nw_src=private_ip)
actions = [parser.OFPActionSetNwSrc(public_ip),
parser.OFPActionOutput(port=north_ofport)]
add_flow(dp, actions=actions, match=rule,
cookie=public_ip, idle_timeout=idle_timeout,
hard_timeout=hard_timeout)
def build_north_to_south(dp, route, idle_timeout=0, hard_timeout=0):
parser = dp.ofproto_parser
public_ip = ip.ipv4_to_int(route['public_ip'])
max_link = len(route['endpoints']) - 1
north_ofport = cfg.CONF.flows.northbound_ofport
south_ofport = cfg.CONF.flows.southbound_ofport
for link, endpoint in enumerate(route['endpoints']):
actions = [parser.NXActionResubmitTable(table=100)]
match = build_rule(in_port=north_ofport, nw_dst=public_ip)
add_flow(dp,
actions=actions,
match=match,
cookie=public_ip,
idle_timeout=idle_timeout,
hard_timeout=hard_timeout)
# table 100
bmf = build_multipath
bmf(dp,
public_ip,
max_link,
idle_timeout=idle_timeout,
hard_timeout=hard_timeout)
private_ip = ip.ipv4_to_int(endpoint['private_ip'])
# table 110
actions = [
parser.OFPActionSetNwDst(private_ip),
parser.OFPActionOutput(port=south_ofport)
]
rule = build_rule(registers={1: link}, nw_dst=public_ip)
add_flow(dp,
table_id=110,
actions=actions,
match=rule,
cookie=public_ip,
idle_timeout=idle_timeout,
hard_timeout=hard_timeout)
def build_south_to_north(dp,
floating_ip,
drop_flows=False,
idle_timeout=0,
hard_timeout=0):
parser = dp.ofproto_parser
public_ip = ip.ipv4_to_int(floating_ip['public_ip'])
north_ofport = cfg.CONF.flows.northbound_ofport
south_ofport = cfg.CONF.flows.southbound_ofport
for endpoint in floating_ip['endpoints']:
private_ip = ip.ipv4_to_int(endpoint['private_ip'])
rule = build_rule(in_port=south_ofport, nw_src=private_ip)
actions = [
parser.OFPActionSetNwSrc(public_ip),
parser.OFPActionOutput(port=north_ofport)
]
add_flow(dp,
actions=actions,
match=rule,
cookie=public_ip,
idle_timeout=idle_timeout,
hard_timeout=hard_timeout)
def build_rule(in_port=None,
nw_dst=None,
nw_src=None,
nw_proto=None,
dl_dst=None,
dl_src=None,
registers=None,
tun_id=None,
dl_type=None):
rule = ClsRule()
if in_port is not None:
rule.set_in_port(in_port)
if dl_dst is not None:
dl_dst = haddr_to_bin(dl_dst)
rule.set_dl_dst(dl_dst)
if dl_src is not None:
dl_src = haddr_to_bin(dl_src)
rule.set_dl_src(dl_src)
if dl_type is None and (nw_dst is not None or nw_src is not None):
dl_type = ether_types.ETH_TYPE_IP
if dl_type is not None:
rule.set_dl_type(dl_type)
if nw_dst is not None:
if isinstance(nw_dst, dict):
nw_dst = nw_dst['destination']
if isinstance(nw_dst, six.string_types):
nw_dst = ip.ipv4_to_int(nw_dst)
if isinstance(nw_dst, tuple):
rule.set_nw_dst_masked(nw_dst[0], nw_dst[1])
else:
rule.set_nw_dst(nw_dst)
if nw_src is not None:
if isinstance(nw_src, dict):
nw_src = nw_src['destination']
if isinstance(nw_src, six.string_types):
nw_src = ip.ipv4_to_int(nw_src)
if isinstance(nw_src, tuple):
rule.set_nw_src_masked(nw_src[0], nw_src[1])
else:
rule.set_nw_src(nw_src)
if registers is not None:
for k, v in registers.iteritems():
rule.set_reg(k, v)
if tun_id is not None:
rule.set_tun_id(tun_id)
if nw_proto is not None:
rule.set_nw_proto(nw_proto)
return rule
