From bd4e8a70b5083ffca57817bac77f0d158db32d0b Mon Sep 17 00:00:00 2001
From: IWASE Yusuke <iwase.yusuke0@gmail.com>
Date: Mon, 5 Sep 2016 09:41:34 +0900
Subject: packet/bgp: Add BGP Encapsulation Extended Community
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>
---
ryu/lib/packet/bgp.py | 41 +++++++++++++++++++++++++++++++--------
ryu/tests/unit/packet/test_bgp.py | 4 ++++
2 files changed, 37 insertions(+), 8 deletions(-)
diff --git a/ryu/lib/packet/bgp.py b/ryu/lib/packet/bgp.py
index fdcdb0f2..6b39f2dc 100644
--- a/ryu/lib/packet/bgp.py
+++ b/ryu/lib/packet/bgp.py
@@ -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):
"""
diff --git a/ryu/tests/unit/packet/test_bgp.py b/ryu/tests/unit/packet/test_bgp.py
index a8900a5f..2e6b9268 100644
--- a/ryu/tests/unit/packet/test_bgp.py
+++ b/ryu/tests/unit/packet/test_bgp.py
@@ -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(
--
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