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-rw-r--r--resources/libraries/python/SRv6.py58
1 files changed, 50 insertions, 8 deletions
diff --git a/resources/libraries/python/SRv6.py b/resources/libraries/python/SRv6.py
index 03a55a41ed..fe706f5f70 100644
--- a/resources/libraries/python/SRv6.py
+++ b/resources/libraries/python/SRv6.py
@@ -32,6 +32,12 @@ SRV6BEHAVIOUR_END_DT4 = 'end.dt4'
SRV6BEHAVIOUR_END_DX6 = 'end.dx6'
# Endpoint with decapsulation and IPv6 table lookup
SRV6BEHAVIOUR_END_DT6 = 'end.dt6'
+# Endpoint to SR-unaware appliance via static proxy
+SRV6BEHAVIOUR_END_AS = 'end.as'
+# Endpoint to SR-unaware appliance via dynamic proxy
+SRV6BEHAVIOUR_END_AD = 'end.ad'
+# Endpoint to SR-unaware appliance via masquerading
+SRV6BEHAVIOUR_END_AM = 'end.am'
class SRv6(object):
@@ -42,7 +48,8 @@ class SRv6(object):
@staticmethod
def configure_sr_localsid(node, local_sid, behavior, interface=None,
- next_hop=None, fib_table=None):
+ next_hop=None, fib_table=None, out_if=None,
+ in_if=None, src_addr=None, sid_list=None):
"""Create SRv6 LocalSID and binds it to a particular behaviour on
the given node.
@@ -55,12 +62,27 @@ class SRv6(object):
xconnects).
:param fib_table: FIB table for IPv4/IPv6 lookup (Optional, required for
L3 routing).
+ :param out_if: Interface name of local interface for sending traffic
+ towards the Service Function (Optional, required for SRv6 endpoint
+ to SR-unaware appliance).
+ :param in_if: Interface name of local interface receiving the traffic
+ coming back from the Service Function (Optional, required for SRv6
+ endpoint to SR-unaware appliance).
+ :param src_addr: Source address on the packets coming back on in_if
+ interface (Optional, required for SRv6 endpoint to SR-unaware
+ appliance via static proxy).
+ :param sid_list: SID list (Optional, required for SRv6 endpoint to
+ SR-unaware appliance via static proxy).
:type node: dict
:type local_sid: str
:type behavior: str
:type interface: str
:type next_hop: int
:type fib_table: str
+ :type out_if: str
+ :type in_if: str
+ :type src_addr: str
+ :type sid_list: list
:raises ValueError: If unsupported SRv6 LocalSID function used or
required parameter is missing.
"""
@@ -69,20 +91,36 @@ class SRv6(object):
elif behavior in [SRV6BEHAVIOUR_END_X, SRV6BEHAVIOUR_END_DX4,
SRV6BEHAVIOUR_END_DX6]:
if interface is None or next_hop is None:
- raise ValueError('Required data missing.\ninterface:{0}\n'
- 'next_hop:{1}'.format(interface, next_hop))
+ raise ValueError('Required parameter(s) missing.\ninterface:{0}'
+ '\nnext_hop:{1}'.format(interface, next_hop))
interface_name = Topology.get_interface_name(node, interface)
params = '{0} {1}'.format(interface_name, next_hop)
elif behavior == SRV6BEHAVIOUR_END_DX2:
if interface is None:
- raise ValueError('Required data missing.\ninterface:{0}\n'.
+ raise ValueError('Required parameter missing.\ninterface:{0}'.
format(interface))
params = '{0}'.format(interface)
elif behavior in [SRV6BEHAVIOUR_END_DT4, SRV6BEHAVIOUR_END_DT6]:
if fib_table is None:
- raise ValueError('Required data missing.\nfib_table:{0}\n'.
+ raise ValueError('Required parameter missing.\nfib_table: {0}'.
format(fib_table))
params = '{0}'.format(fib_table)
+ elif behavior == SRV6BEHAVIOUR_END_AS:
+ if next_hop is None or out_if is None or in_if is None or \
+ src_addr is None or sid_list is None:
+ raise ValueError('Required parameter(s) missing.\nnext_hop:{0}'
+ '\nout_if:{1}\nin_if:{2}\nsrc_addr:{3}\n'
+ 'sid_list:{4}'.format(next_hop, out_if, in_if,
+ src_addr, sid_list))
+ sid_conf = 'next ' + ' next '.join(sid_list)
+ params = 'nh {0} oif {1} iif {2} src {3} {4}'.\
+ format(next_hop, out_if, in_if, src_addr, sid_conf)
+ elif behavior in [SRV6BEHAVIOUR_END_AD, SRV6BEHAVIOUR_END_AM]:
+ if next_hop is None or out_if is None or in_if is None:
+ raise ValueError('Required parameter(s) missing.\nnext_hop:{0}'
+ '\nout_if:{1}\nin_if:{2}'.
+ format(next_hop, out_if, in_if))
+ params = 'nh {0} oif {1} iif {2}'.format(next_hop, out_if, in_if)
else:
raise ValueError('Unsupported SRv6 LocalSID function: {0}'.
format(behavior))
@@ -217,9 +255,13 @@ class SRv6(object):
vat.vat_terminal_exec_cmd_from_template(
'srv6/sr_steer_add_del.vat', params=params, bsid=bsid)
- if "exec error: Misc" in vat.vat_stdout:
- raise RuntimeError('Create SRv6 steering policy for BindingSID {0}'
- ' failed on node {1}'.format(bsid, node['host']))
+ sr_steer_errors = ("exec error: Misc",
+ "sr steer: No SR policy specified")
+ for err in sr_steer_errors:
+ if err in vat.vat_stdout:
+ raise RuntimeError('Create SRv6 steering policy for BindingSID'
+ ' {0} failed on node {1}'.
+ format(bsid, node['host']))
@staticmethod
def delete_sr_steer(node, mode, bsid, interface=None, ip_addr=None,