def port_mod(switch, msg, rawmsg):
"""
Process a port_mod message from the controller
@param switch The main switch object
@param msg The parsed message object of type port_mod
@param rawmsg The actual packet received as a string
"""
switch.logger.debug("Received port_mod from controller")
err = None
try:
port = switch.ports[msg.port_no]
if port.hw_addr == msg.hw_addr:
port.config = (port.config & ~msg.mask) | (msg.config & msg.mask)
if msg.advertise != 0:
port.advertise = msg.advertise
#@todo check to see if requested features is valid
#@todo throw an error if invalid :
# http://www.openflow.org/bugs/openflow/ticket/249
port.curr = port.advertise
#@todo update port.curr and call to ioctl() to actually change
#the port's speed
else:
err = ofutils.of_error_msg_make(ofp.OFPET_PORT_MOD_FAILED,
ofp.OFPPMFC_BAD_HW_ADDR, msg)
except IndexError:
switch.logger.error(
"port_mod from controller tried to access non-existent" +
" port %d %x:%x:%x:%x%x:%x" % ((msg.port) + msg.hw_addr))
err = ofutils.of_error_msg_make(ofp.OFPET_PORT_MOD_FAILED,
ofp.OFPPMFC_BAD_PORT, msg)
if err:
switch.controller.message_send(err)
def port_mod(switch, msg, rawmsg):
"""
Process a port_mod message from the controller
@param switch The main switch object
@param msg The parsed message object of type port_mod
@param rawmsg The actual packet received as a string
"""
switch.logger.debug("Received port_mod from controller")
err = None
try:
port = switch.ports[msg.port_no]
if port.hw_addr == msg.hw_addr:
port.config = (port.config& ~msg.mask) | (msg.config & msg.mask)
if msg.advertise != 0 :
port.advertise = msg.advertise
#@todo check to see if requested features is valid
#@todo throw an error if invalid :
# http://www.openflow.org/bugs/openflow/ticket/249
port.curr = port.advertise
#@todo update port.curr and call to ioctl() to actually change
#the port's speed
else:
err = ofutils.of_error_msg_make(ofp.OFPET_PORT_MOD_FAILED, ofp.OFPPMFC_BAD_HW_ADDR, msg)
except IndexError:
switch.logger.error("port_mod from controller tried to access non-existent" +
" port %d %x:%x:%x:%x%x:%x" % ((msg.port) + msg.hw_addr ))
err = ofutils.of_error_msg_make(ofp.OFPET_PORT_MOD_FAILED, ofp.OFPPMFC_BAD_PORT, msg)
if err:
switch.controller.message_send(err)
def table_mod_process(self, table_mod):
"""
Apply the config changes specified in a table_mod to
one or more tables in the pipeline
@param table_mod a fully instantiated table_mod class
@return None on success, an ofp_error message on error
"""
if table_mod.table_id >= self.n_tables and table_mod.table_id != 0xFF:
return ofutils.of_error_msg_make(ofp.OFPET_TABLE_MOD_FAILED, ofp.OFPTMFC_BAD_TABLE, table_mod)
if table_mod.config not in [
ofp.OFPTC_TABLE_MISS_CONTROLLER,
ofp.OFPTC_TABLE_MISS_CONTINUE,
ofp.OFPTC_TABLE_MISS_DROP,
]:
return ofutils.of_error_msg_make(ofp.OFPET_TABLE_MOD_FAILED, ofp.OFPTMFC_BAD_CONFIG, table_mod)
update_list = None
if table_mod.table_id == 0xFF:
update_list = self.tables
else:
update_list = [self.tables[table_mod.table_id]]
for table in update_list:
self.logger.debug(
"table_mod: " + "setting table %d " % table.table_id + "to miss_policy %d" % table_mod.config
)
table.miss_policy = table_mod.config
return None
def table_mod_process(self, table_mod):
"""
Apply the config changes specified in a table_mod to
one or more tables in the pipeline
@param table_mod a fully instantiated table_mod class
@return None on success, an ofp_error message on error
"""
if (table_mod.table_id >= self.n_tables and
table_mod.table_id != 0xff):
return ofutils.of_error_msg_make(ofp.OFPET_TABLE_MOD_FAILED,
ofp.OFPTMFC_BAD_TABLE,
table_mod)
if table_mod.config not in [ ofp.OFPTC_TABLE_MISS_CONTROLLER,
ofp.OFPTC_TABLE_MISS_CONTINUE,
ofp.OFPTC_TABLE_MISS_DROP]:
return ofutils.of_error_msg_make(ofp.OFPET_TABLE_MOD_FAILED,
ofp.OFPTMFC_BAD_CONFIG,
table_mod)
update_list = None
if table_mod.table_id == 0xff:
update_list = self.tables
else:
update_list = [ self.tables[table_mod.table_id]]
for table in update_list:
self.logger.debug("table_mod: " +
"setting table %d " % table.table_id +
"to miss_policy %d" % table_mod.config)
table.miss_policy = table_mod.config
return None
def _validate_match_mpls(match, flow_mod, logger):
mpls_label_specified = (match.wildcards & ofp.OFPFMF_MPLS_LABEL) == 0
if ( mpls_label_specified and
not _test_mpls_label(match.mpls_label)):
logger.error(
"rejecting broken match: bad mpls label: %x %d" %
(match.wildcards, match.mpls_label))
raise MatchException(
ofutils.of_error_msg_make(
ofp.OFPET_FLOW_MOD_FAILED,
ofp.OFPFMFC_BAD_MATCH,
flow_mod))
# We only care about the tc value:
# IF it's not wildcarded and
# if mpls_label is wildcarded or not NONE
# because if there is no mpls_label, there is no tc
tc_needs_test = (
(match.wildcards & ofp.OFPFMF_MPLS_TC) == 0 and
( not mpls_label_specified or
match.mpls_label != ofp.OFPML_NONE ))
if ( tc_needs_test and not _test_mpls_tc(match.mpls_tc)):
logger.error("rejecting broken match: bad mpls tc")
raise MatchException(
ofutils.of_error_msg_make(
ofp.OFPET_FLOW_MOD_FAILED,
ofp.OFPFMFC_BAD_MATCH,
flow_mod))
return None
def _validate_match_vlan(match, flow_mod, logger):
vlan_specified = (match.wildcards & ofp.OFPFMF_DL_VLAN) == 0
if (vlan_specified and not _test_vlan_vid(match.dl_vlan)):
logger.error("rejecting broken match: bad vlan: %d" % match.dl_vlan)
raise MatchException(
ofutils.of_error_msg_make(ofp.OFPET_FLOW_MOD_FAILED,
ofp.OFPFMFC_BAD_MATCH, flow_mod))
pcp_needs_test = ((match.wildcards & ofp.OFPFMF_DL_VLAN_PCP) == 0 and
(not vlan_specified or match.dl_vlan != ofp.OFPVID_NONE))
if (pcp_needs_test and not _test_vlan_pcp(match.dl_vlan_pcp)):
logger.error("rejecting broken match: bad vlan_pcp")
raise MatchException(
ofutils.of_error_msg_make(ofp.OFPET_FLOW_MOD_FAILED,
ofp.OFPFMFC_BAD_MATCH, flow_mod))
return None
def _validate_action_set_mpls_tc(action, switch, flow_mod, logger):
if _test_mpls_tc(action.mpls_tc):
return None
else:
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_ARGUMENT,
flow_mod)
def _validate_instruction_goto_table(instruction, switch, flow_mod, logger):
table_id = instruction.table_id
if table_id >= 0 and table_id < switch.pipeline.n_tables:
return None
else:
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_ARGUMENT, flow_mod)
def _validate_action_push_mpls(action, switch, flow_mod, logger):
if (action.ethertype == packet.ETHERTYPE_MPLS
or action.ethertype == packet.ETHERTYPE_MPLS_MCAST):
return None
else:
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_ARGUMENT, flow_mod)
def _validate_instruction_goto_table(instruction, switch, flow_mod, logger):
table_id = instruction.table_id
if table_id >= 0 and table_id < switch.pipeline.n_tables :
return None
else:
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_ARGUMENT,
flow_mod)
def _validate_action_push_mpls(action, switch, flow_mod, logger):
if (action.ethertype == packet.ETHERTYPE_MPLS or
action.ethertype == packet.ETHERTYPE_MPLS_MCAST):
return None
else:
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_ARGUMENT,
flow_mod)
def _validate_action_output(action, switch, flow_mod, logger):
if action.port >= ofp.OFPP_MAX or action.port in switch.ports:
return None # port is valid
else:
logger.error("invalid port %d (0x%x) in action_output" %
(action.port, action.port))
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_OUT_PORT, flow_mod)
def _validate_action_push_vlan(action, switch, flow_mod, logger):
if (action.ethertype == packet.ETHERTYPE_VLAN
or action.ethertype == packet.ETHERTYPE_VLAN_QinQ):
return None
else:
logger.error("invalid ethertype 0x%x in action_push_vlan" %
action.ethertype)
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_ARGUMENT, flow_mod)
def _validate_action_output(action, switch, flow_mod, logger):
if action.port >= ofp.OFPP_MAX or action.port in switch.ports:
return None # port is valid
else:
logger.error("invalid port %d (0x%x) in action_output" %
(action.port, action.port))
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_OUT_PORT,
flow_mod)
def _validate_action_push_vlan(action, switch, flow_mod, logger):
if (action.ethertype == packet.ETHERTYPE_VLAN or
action.ethertype == packet.ETHERTYPE_VLAN_QinQ):
return None
else:
logger.error("invalid ethertype 0x%x in action_push_vlan"
% action.ethertype )
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_ARGUMENT,
flow_mod)
def _validate_match_vlan(match, flow_mod, logger):
vlan_specified = (match.wildcards & ofp.OFPFMF_DL_VLAN) == 0
if ( vlan_specified and not _test_vlan_vid(match.dl_vlan)):
logger.error("rejecting broken match: bad vlan: %d" %
match.dl_vlan)
raise MatchException(
ofutils.of_error_msg_make(
ofp.OFPET_FLOW_MOD_FAILED,
ofp.OFPFMFC_BAD_MATCH,
flow_mod))
pcp_needs_test = (
(match.wildcards & ofp.OFPFMF_DL_VLAN_PCP) == 0 and
(not vlan_specified or match.dl_vlan != ofp.OFPVID_NONE))
if ( pcp_needs_test and not _test_vlan_pcp(match.dl_vlan_pcp)):
logger.error("rejecting broken match: bad vlan_pcp")
raise MatchException(
ofutils.of_error_msg_make(
ofp.OFPET_FLOW_MOD_FAILED,
ofp.OFPFMFC_BAD_MATCH,
flow_mod))
return None
def _validate_match_mpls(match, flow_mod, logger):
mpls_label_specified = (match.wildcards & ofp.OFPFMF_MPLS_LABEL) == 0
if (mpls_label_specified and not _test_mpls_label(match.mpls_label)):
logger.error("rejecting broken match: bad mpls label: %x %d" %
(match.wildcards, match.mpls_label))
raise MatchException(
ofutils.of_error_msg_make(ofp.OFPET_FLOW_MOD_FAILED,
ofp.OFPFMFC_BAD_MATCH, flow_mod))
# We only care about the tc value:
# IF it's not wildcarded and
# if mpls_label is wildcarded or not NONE
# because if there is no mpls_label, there is no tc
tc_needs_test = ((match.wildcards & ofp.OFPFMF_MPLS_TC) == 0
and (not mpls_label_specified
or match.mpls_label != ofp.OFPML_NONE))
if (tc_needs_test and not _test_mpls_tc(match.mpls_tc)):
logger.error("rejecting broken match: bad mpls tc")
raise MatchException(
ofutils.of_error_msg_make(ofp.OFPET_FLOW_MOD_FAILED,
ofp.OFPFMFC_BAD_MATCH, flow_mod))
return None
def _validate_action_set_mpls_tc(action, switch, flow_mod, logger):
if _test_mpls_tc(action.mpls_tc):
return None
else:
return ofutils.of_error_msg_make(ofp.OFPET_BAD_ACTION,
ofp.OFPBAC_BAD_ARGUMENT, flow_mod)
