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bgp: make reserved private variable

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reserved field must be 0. this patch add an assertion and
make reserved field invisible when stringified

Signed-off-by: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
This commit is contained in:
ISHIDA Wataru 2014-08-18 09:19:10 +09:00 committed by FUJITA Tomonori
parent 9606784f68
commit 7a06df454b
1 changed files with 4 additions and 3 deletions
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7
ryu/lib/packet/bgp.py
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@ -1982,7 +1982,7 @@ class BGPPathAttributeMpReachNLRI(_PathAttribute):
self._next_hop_bin = addrconv.ipv6.text_to_bin(next_hop)
else:
raise ValueError('Invalid address familly(%d)' % afi)
self.reserved = reserved
self._reserved = reserved
self.nlri = nlri
addr_cls = _get_addr_class(afi, safi)
for i in nlri:
@ -1996,6 +1996,7 @@ class BGPPathAttributeMpReachNLRI(_PathAttribute):
next_hop_bin = rest[:next_hop_len]
rest = rest[next_hop_len:]
reserved = rest[:1]
assert reserved == '\0'
binnlri = rest[1:]
addr_cls = _get_addr_class(afi, safi)
nlri = []
@ -2039,13 +2040,13 @@ class BGPPathAttributeMpReachNLRI(_PathAttribute):
next_hop_len = self.next_hop_len
next_hop_bin = self._next_hop_bin
self.reserved = '\0'
self._reserved = '\0'
buf = bytearray()
msg_pack_into(self._VALUE_PACK_STR, buf, 0, self.afi,
self.safi, next_hop_len)
buf += next_hop_bin
buf += self.reserved
buf += self._reserved
binnlri = bytearray()
for n in self.nlri:
binnlri += n.serialize()