def mpls1_flow(dpath, mod, ofctl, use_metadata=True):
"""
MPLS1 flow table.
"""
_LOG.debug("MPLS1 FLow: %d %s %s", dpath.id, mod, ofctl)
cmd = fibcapi.flow_mod_cmd(mod.cmd, dpath.ofproto)
entry = mod.mpls1
def _match():
match = ofmatch.Match()
match.eth_type(fibcapi.ETHTYPE_MPLS)
match.mpls_bos(entry.match.bos)
match.mpls_label(entry.match.label)
return match
def _actions():
if not offlow.is_action_needed(dpath, cmd):
return []
actions = [
ofaction.goto_table(entry.goto_table),
ofaction.dec_mpls_ttl(),
]
if entry.goto_table == pb.FlowMod.MPLS_TYPE:
actions.append(
ofaction.set_mpls_type(fibcapi.MPLSTYPE_PHP, use_metadata))
for action in entry.actions:
if action.name == pb.MPLSFlow.Action.POP_LABEL:
actions.append(ofaction.pop_mpls(action.value))
elif action.name == pb.MPLSFlow.Action.SET_VRF:
actions.append(ofaction.set_vrf(action.value, use_metadata))
return actions
def _writes():
if not offlow.is_action_needed(dpath, cmd):
return []
if entry.g_type == pb.GroupMod.MPLS_INTERFACE:
return [
ofaction.group(fibcapi.mpls_interface_group_id(entry.g_id))
]
if entry.g_type == pb.GroupMod.MPLS_SWAP:
return [ofaction.group(fibcapi.mpls_label_group_id(5, entry.g_id))]
if entry.g_type == pb.GroupMod.MPLS_FF:
return [ofaction.group(fibcapi.mpls_ff_group_id(entry.g_id))]
if entry.g_type == pb.GroupMod.MPLS_ECMP:
return [ofaction.group(fibcapi.mpls_ecmp_group_id(entry.g_id))]
return []
flow = offlow.flow_mod(match=_match,
actions=_actions,
writes=_writes,
table_id=pb.FlowMod.MPLS1,
priority=1)
ofctl.mod_flow_entry(dpath, flow, cmd)
def termination_mac_flow(dpath, mod, ofctl):
"""
Termination MAC flow table.
"""
_LOG.debug("TERM MAC FLow: %d %s %s", dpath.id, mod, ofctl)
cmd = fibcapi.flow_mod_cmd(mod.cmd, dpath.ofproto)
entry = mod.term_mac
match = ofmatch.Match().eth_type(entry.match.eth_type).eth_dst(
entry.match.eth_dst)
def _actions():
if not offlow.is_action_needed(dpath, cmd):
return []
return [ofaction.goto_table(entry.goto_table)]
flow = offlow.flow_mod(match=match,
actions=_actions,
writes=[],
table_id=pb.FlowMod.TERM_MAC,
priority=fibcapi.PRIORITY_LOW)
ofctl.mod_flow_entry(dpath, flow, cmd)
def policy_acl_flow(dpath, mod, ofctl, use_metadata=True):
"""
Policy ACL flow table.
"""
_LOG.debug("ACL FLow: %d %s", dpath.id, mod)
entry = mod.acl
if entry.match.in_port:
# openflow mode:
# send no flows for a port.
# flows for a port are send by setup_flow().
return
cmd = fibcapi.flow_mod_cmd(mod.cmd, dpath.ofproto)
match = ofmatch.Match().ip_dst(entry.match.ip_dst).vrf(
entry.match.vrf, use_metadata)
def _actions():
if not offlow.is_action_needed(dpath, cmd):
return []
return [ofaction.output(dpath.ofproto.OFPP_CONTROLLER)]
flow = offlow.flow_mod(match=match,
actions=_actions,
writes=[],
table_id=pb.FlowMod.POLICY_ACL,
priority=fibcapi.PRIORITY_HIGH)
ofctl.mod_flow_entry(dpath, flow, cmd)
def unicast_routing_flow(dpath, mod, ofctl, use_metadata=True):
"""
Create flow_mod for Unicast Routing flow table.
"""
_LOG.debug("Unicast Routing FLow: %d %s", dpath.id, mod)
cmd = fibcapi.flow_mod_cmd(mod.cmd, dpath.ofproto)
entry = mod.unicast
match = ofmatch.Match().ip_dst(entry.match.ip_dst).vrf(
entry.match.vrf, use_metadata)
def _actions():
if not offlow.is_action_needed(dpath, cmd):
return []
return [ofaction.goto_table(pb.FlowMod.POLICY_ACL)]
def _writes():
if not offlow.is_action_needed(dpath, cmd):
return []
writes = [ofaction.dec_nw_ttl()]
if entry.g_type == pb.GroupMod.L3_UNICAST:
writes.append(
ofaction.group(fibcapi.l3_unicast_group_id(entry.g_id)))
elif entry.g_type == pb.GroupMod.L3_ECMP:
writes.append(ofaction.group(fibcapi.l3_ecmp_group_id(entry.g_id)))
elif entry.g_type == pb.GroupMod.MPLS_L3_VPN:
writes.append(
ofaction.group(fibcapi.mpls_label_group_id(2, entry.g_id)))
else:
pass
return writes
def _priority_base():
if entry.g_type == pb.GroupMod.MPLS_L3_VPN:
return fibcapi.PRIORITY_BASE_VPN
return fibcapi.PRIORITY_BASE_UC
priority = offlow.priority_for_ipaddr(entry.match.ip_dst, _priority_base())
flow = offlow.flow_mod(match=match,
actions=_actions,
writes=_writes,
table_id=pb.FlowMod.UNICAST_ROUTING,
priority=priority)
ofctl.mod_flow_entry(dpath, flow, cmd)
def vlan_flow(dpath, mod, ofctl, use_metadata=True):
"""
VLAN flow table.
"""
_LOG.debug("VLAN FLow: %d %s", dpath.id, mod)
cmd = fibcapi.flow_mod_cmd(mod.cmd, dpath.ofproto)
entry = mod.vlan
def _match():
match = ofmatch.Match()
match.in_port(entry.match.in_port)
match.vlan_vid(entry.match.vid, entry.match.vid_mask)
return match
def _actions():
if not offlow.is_action_needed(dpath, cmd):
return []
actions = []
for action in entry.actions:
if action.name == pb.VLANFlow.Action.PUSH_VLAN:
vlan_vid = action.value | fibcapi.OFPVID_PRESENT
actions.append(ofaction.push_vlan(fibcapi.ETHTYPE_VLAN_Q))
actions.append(ofaction.set_field("vlan_vid", vlan_vid))
elif action.name == pb.VLANFlow.Action.SET_VRF:
actions.append(ofaction.set_vrf(action.value, use_metadata))
actions.append(ofaction.goto_table(entry.goto_table))
return actions
flow = offlow.flow_mod(match=_match,
actions=_actions,
writes=[],
table_id=pb.FlowMod.VLAN,
priority=3)
ofctl.mod_flow_entry(dpath, flow, cmd)