def unpack_nlri(cls, afi, safi, bgp, action, addpath):
length = bgp[0]
if length == 0:
return cls(afi, safi, action, ASN(0), None), bgp[1:]
if length < 8 * 4:
raise Exception("incorrect RT length: %d (should be >=32,<=96)" %
length)
# We are reseting the flags on the RouteTarget extended
# community, because they do not make sense for an RTC route
return (
cls(
afi,
safi,
action,
ASN(unpack('!L', bgp[1:5])[0]),
RouteTarget.unpack(
bytes([RTC.resetFlags(bgp[5])]) + bgp[6:13]),
),
bgp[13:],
)
def unpack(cls, afi, safi, data, addpath, nexthop, action):
length = ord(data[0])
if length == 0:
return 1, cls(afi, safi, action, NoNextHop, ASN(0), None)
# We are reseting the flags on the RouteTarget extended
# community, because they do not make sense for an RTC route
return 13, cls(
afi, safi, action, nexthop, ASN(unpack('!L', data[1:5])[0]),
RouteTarget.unpack(RTC.resetFlags(data[5]) + data[6:13]))
def unpack_nlri(cls, afi, safi, bgp, action, addpath):
length = ord(bgp[0])
if length == 0:
return 1, cls(afi, safi, action, ASN(0), None)
# We are reseting the flags on the RouteTarget extended
# community, because they do not make sense for an RTC route
return cls(afi, safi, action, ASN(unpack('!L', bgp[1:5])[0]),
RouteTarget.unpack(RTC.resetFlags(bgp[5]) +
bgp[6:13])), bgp[13:]
def unpack (cls, afi, safi, data, addpath, nexthop, action):
length = ord(data[0])
if length == 0:
return 1,cls(afi,safi,action,NoNextHop,ASN(0),None)
# XXX: Why are we reseting the flags on the RouteTarget extended community ?
return 13,cls(
afi, safi, action, nexthop,
ASN(unpack('!L', data[1:5])[0]),
RouteTarget.unpack(
RTC.resetFlags(data[5])+data[6:13]
)
)
def unpack (cls, afi, safi, data, addpath, nexthop, action):
length = ord(data[0])
if length == 0:
return 1,cls(afi,safi,action,NoNextHop,ASN(0),None)
# We are reseting the flags on the RouteTarget extended
# community, because they do not make sense for an RTC route
return 13,cls(
afi, safi, action, nexthop,
ASN(unpack('!L', data[1:5])[0]),
RouteTarget.unpack(
RTC.resetFlags(data[5])+data[6:13]
)
)
def unpack_nlri (cls, afi, safi, bgp, action, addpath):
length = ord(bgp[0])
if length == 0:
return 1,cls(afi,safi,action,ASN(0),None)
# We are reseting the flags on the RouteTarget extended
# community, because they do not make sense for an RTC route
return cls(
afi, safi, action,
ASN(unpack('!L', bgp[1:5])[0]),
RouteTarget.unpack(
RTC.resetFlags(bgp[5])+bgp[6:13]
)
),bgp[13:]
def unpack_nlri (cls, afi, safi, bgp, action, addpath):
length = ord(bgp[0])
if length == 0:
return cls(afi,safi,action,ASN(0),None),bgp[1:]
if length < 8*4:
raise Exception("incorrect RT lenght: %d (should be >=32,<=96)" % length)
# We are reseting the flags on the RouteTarget extended
# community, because they do not make sense for an RTC route
return cls(
afi, safi, action,
ASN(unpack('!L', bgp[1:5])[0]),
RouteTarget.unpack(
RTC.resetFlags(bgp[5])+bgp[6:13]
)
),bgp[13:]
