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Code Issues Releases Activity

packet: fix PathAttributeMpReachNLRI's Serialize()

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len(p.Valu) could be zero.

Signed-off-by: FUJITA Tomonori <[email protected]>
This commit is contained in:
FUJITA Tomonori
2015-01-24 00:06:05 +09:00
parent 3aced1df03
commit 4656ce8419
1 changed files with 10 additions and 2 deletions
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packet/bgp.go
+10 -2
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@@ -1860,6 +1860,8 @@ func NewPathAttributeClusterList(value []string) *PathAttributeClusterList {
type PathAttributeMpReachNLRI struct {
PathAttribute
Nexthop net.IP
AFI uint16
SAFI uint8
Value []AddrPrefixInterface
}
@@ -1877,6 +1879,8 @@ func (p *PathAttributeMpReachNLRI) DecodeFromBytes(data []byte) error {
}
afi := binary.BigEndian.Uint16(value[0:2])
safi := value[2]
p.AFI = afi
p.SAFI = safi
nexthopLen := value[3]
if len(value) < 4+int(nexthopLen) {
return NewMessageError(eCode, eSubCode, value, "mpreach nexthop length is short")
@@ -1921,8 +1925,12 @@ func (p *PathAttributeMpReachNLRI) DecodeFromBytes(data []byte) error {
}
func (p *PathAttributeMpReachNLRI) Serialize() ([]byte, error) {
afi := p.Value[0].AFI()
safi := p.Value[0].SAFI()
afi := p.AFI
safi := p.SAFI
if len(p.Value) > 0 && afi == 0 {
afi = p.Value[0].AFI()
safi = p.Value[0].SAFI()
}
nexthoplen := 4
if afi == AFI_IP6 {
nexthoplen = 16