diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2014-12-25 22:12:34 -0800 |
|---|---|---|
| committer | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2014-12-25 22:12:34 -0800 |
| commit | 94e35ee50de5750d46ae32b1c9d736671a0e84a6 (patch) | |
| tree | d6e1d461cff683308cd91db7e7cbf25b8d48b82d /packet/bgp.go | |
| parent | 0adb1d0dcd57b17444a3364e576b3bcf94266ce4 (diff) | |
packet: define BGPPathAttr type
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Diffstat (limited to 'packet/bgp.go')
| -rw-r--r-- | packet/bgp.go | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/packet/bgp.go b/packet/bgp.go index ddb81814..747957fa 100644 --- a/packet/bgp.go +++ b/packet/bgp.go @@ -983,8 +983,10 @@ const ( BGP_ATTR_FLAG_OPTIONAL = 1 << 7 ) +type BGPAttrType uint8 + const ( - _ = iota + _ BGPAttrType = iota BGP_ATTR_TYPE_ORIGIN BGP_ATTR_TYPE_AS_PATH BGP_ATTR_TYPE_NEXT_HOP @@ -1084,7 +1086,7 @@ type PathAttributeInterface interface { type PathAttribute struct { Flags uint8 - Type uint8 + Type BGPAttrType Length uint16 Value []byte } @@ -1101,7 +1103,7 @@ func (p *PathAttribute) Len() int { func (p *PathAttribute) DecodeFromBytes(data []byte) error { p.Flags = data[0] - p.Type = data[1] + p.Type = BGPAttrType(data[1]) if p.Flags&BGP_ATTR_FLAG_EXTENDED_LENGTH != 0 { p.Length = binary.BigEndian.Uint16(data[2:4]) @@ -1124,7 +1126,7 @@ func (p *PathAttribute) Serialize() ([]byte, error) { } buf := make([]byte, p.Len()) buf[0] = p.Flags - buf[1] = p.Type + buf[1] = uint8(p.Type) if p.Flags&BGP_ATTR_FLAG_EXTENDED_LENGTH != 0 { binary.BigEndian.PutUint16(buf[2:4], p.Length) copy(buf[4:], p.Value) @@ -1157,7 +1159,7 @@ type AsPathParam struct { func (a *AsPathParam) Serialize() ([]byte, error) { buf := make([]byte, 2+len(a.AS)*2) - buf[0] = a.Type + buf[0] = uint8(a.Type) buf[1] = a.Num for j, as := range a.AS { binary.BigEndian.PutUint16(buf[2+j*2:], as) @@ -1734,13 +1736,13 @@ func (e *OpaqueExtended) Serialize() ([]byte, error) { } type UnknownExtended struct { - Type uint8 + Type BGPAttrType Value []byte } func (e *UnknownExtended) Serialize() ([]byte, error) { buf := make([]byte, 8) - buf[0] = e.Type + buf[0] = uint8(e.Type) copy(buf[1:], e.Value) return buf, nil } @@ -1777,7 +1779,7 @@ func parseExtended(data []byte) ExtendedCommunityInterface { return e } e := &UnknownExtended{} - e.Type = data[1] + e.Type = BGPAttrType(data[1]) e.Value = data[2:8] return e } @@ -1884,7 +1886,7 @@ type PathAttributeUnknown struct { } func getPathAttribute(data []byte) PathAttributeInterface { - switch data[1] { + switch BGPAttrType(data[1]) { case BGP_ATTR_TYPE_ORIGIN: return &PathAttributeOrigin{} case BGP_ATTR_TYPE_AS_PATH: |