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packet/bgp: Add BGP Encapsulation Extended Community

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This patch adds the support for BGP Encapsulation Extended Community
[RFC5512].

Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
This commit is contained in:
IWASE Yusuke 2016-09-05 09:41:34 +09:00 committed by FUJITA Tomonori
parent cc24a85aad
commit bd4e8a70b5
2 changed files with 37 additions and 8 deletions
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41
ryu/lib/packet/bgp.py
View File

@ -2679,10 +2679,15 @@ class _ExtendedCommunity(StringifyMixin, _TypeDisp, _Value):
IPV4_ADDRESS_SPECIFIC = 0x01
FOUR_OCTET_AS_SPECIFIC = 0x02
OPAQUE = 0x03
SUBTYPE_ENCAPSULATION = 0x0c
ENCAPSULATION = (OPAQUE, SUBTYPE_ENCAPSULATION)
EVPN = 0x06
EVPN_MAC_MOBILITY = (EVPN, 0x00)
EVPN_ESI_LABEL = (EVPN, 0x01)
EVPN_ES_IMPORT_RT = (EVPN, 0x02)
SUBTYPE_EVPN_MAC_MOBILITY = 0x00
SUBTYPE_EVPN_ESI_LABEL = 0x01
SUBTYPE_EVPN_ES_IMPORT_RT = 0x02
EVPN_MAC_MOBILITY = (EVPN, SUBTYPE_EVPN_MAC_MOBILITY)
EVPN_ESI_LABEL = (EVPN, SUBTYPE_EVPN_ESI_LABEL)
EVPN_ES_IMPORT_RT = (EVPN, SUBTYPE_EVPN_ES_IMPORT_RT)
def __init__(self, type_=None):
if type_ is None:
@ -2701,12 +2706,10 @@ class _ExtendedCommunity(StringifyMixin, _TypeDisp, _Value):
(type_, value) = struct.unpack_from(cls._PACK_STR, buf)
rest = buf[cls._PACK_STR_SIZE:]
type_low = type_ & cls._TYPE_HIGH_MASK
if type_low == cls.EVPN:
subtype = cls.parse_subtype(value)
subcls = cls._lookup_type((type_low, subtype))
else:
subtype = cls.parse_subtype(value)
subcls = cls._lookup_type((type_low, subtype))
if subcls == cls._UNKNOWN_TYPE:
subcls = cls._lookup_type(type_low)
return subcls(type_=type_, **subcls.parse_value(value)), rest
def serialize(self):
@ -2771,6 +2774,28 @@ class BGPOpaqueExtendedCommunity(_ExtendedCommunity):
self.do_init(BGPOpaqueExtendedCommunity, self, kwargs)
@_ExtendedCommunity.register_type(_ExtendedCommunity.ENCAPSULATION)
class BGPEncapsulationExtendedCommunity(_ExtendedCommunity):
_VALUE_PACK_STR = '!B4xH'
_VALUE_FIELDS = ['subtype', 'tunnel_type']
# BGP Tunnel Encapsulation Attribute Tunnel Types
# http://www.iana.org/assignments/bgp-parameters/bgp-parameters.xhtml#tunnel-types
TUNNEL_TYPE_L2TPV3 = 1
TUNNEL_TYPE_GRE = 2
TUNNEL_TYPE_IP_IN_IP = 7
TUNNEL_TYPE_VXLAN = 8
TUNNEL_TYPE_NVGRE = 9
TUNNEL_TYPE_MPLS = 10
TUNNEL_TYPE_MPLS_IN_GRE = 11
TUNNEL_TYPE_VXLAN_GRE = 12
TUNNEL_TYPE_MPLS_IN_UDP = 13
def __init__(self, **kwargs):
super(BGPEncapsulationExtendedCommunity, self).__init__()
self.do_init(BGPEncapsulationExtendedCommunity, self, kwargs)
@_ExtendedCommunity.register_type(_ExtendedCommunity.EVPN_MAC_MOBILITY)
class BGPEvpnMacMobilityExtendedCommunity(_ExtendedCommunity):
"""

4
ryu/tests/unit/packet/test_bgp.py
View File

@ -116,6 +116,8 @@ class Test_bgp(unittest.TestCase):
subtype=3, ipv4_address='192.0.2.1',
local_administrator=65432),
bgp.BGPOpaqueExtendedCommunity(subtype=13, opaque=b'abcdef'),
bgp.BGPEncapsulationExtendedCommunity(
subtype=0x0c, tunnel_type=10),
bgp.BGPEvpnMacMobilityExtendedCommunity(
subtype=0, flags=0xff, sequence_number=0x11223344),
bgp.BGPEvpnEsiLabelExtendedCommunity(
@ -280,6 +282,8 @@ class Test_bgp(unittest.TestCase):
subtype=3, ipv4_address='192.0.2.1',
local_administrator=65432),
bgp.BGPOpaqueExtendedCommunity(subtype=13, opaque=b'abcdef'),
bgp.BGPEncapsulationExtendedCommunity(
subtype=0x0c, tunnel_type=10),
bgp.BGPEvpnMacMobilityExtendedCommunity(
subtype=0, flags=0xff, sequence_number=0x11223344),
bgp.BGPEvpnEsiLabelExtendedCommunity(