test/patches/scapy-2.3.3/bier.patch

   1 diff --git a/scapy/contrib/bier.py b/scapy/contrib/bier.py
   2 new file mode 100644
   3 index 0000000..e173cdb
   4 --- /dev/null
   5 +++ b/scapy/contrib/bier.py
   6 @@ -0,0 +1,58 @@
   7 +# http://trac.secdev.org/scapy/ticket/31
   8 +
   9 +# scapy.contrib.description = BIER
  10 +# scapy.contrib.status = loads
  11 +
  12 +from scapy.packet import *
  13 +from scapy.fields import *
  14 +from scapy.layers.inet import IP, UDP
  15 +from scapy.layers.inet6 import IPv6
  16 +
  17 +
  18 +class BIERLength:
  19 +    BIER_LEN_64 = 0
  20 +    BIER_LEN_128 = 1
  21 +    BIER_LEN_256 = 2
  22 +    BIER_LEN_512 = 3
  23 +    BIER_LEN_1024 = 4
  24 +
  25 +
  26 +BIERnhcls = {1: "MPLS",
  27 +             2: "MPLS",
  28 +             4: "IPv4",
  29 +             5: "IPv6"}
  30 +
  31 +
  32 +class BIFT(Packet):
  33 +    name = "BIFT"
  34 +    fields_desc = [BitField("bsl", 0, 4),
  35 +                   BitField("sd", 0, 8),
  36 +                   BitField("set", 0, 8),
  37 +                   BitField("cos", 0, 3),
  38 +                   BitField("s", 1, 1),
  39 +                   ByteField("ttl", 0)]
  40 +
  41 +    def guess_payload_class(self, payload):
  42 +        return BIER
  43 +
  44 +
  45 +class BIER(Packet):
  46 +    name = "BIER"
  47 +    fields_desc = [BitField("id", 5, 4),
  48 +                   BitField("version", 0, 4),
  49 +                   BitFieldLenField("length", BIERLength.BIER_LEN_256, 4,
  50 +                                    length_of=lambda x:(x.BitString >> 8)),
  51 +                   BitField("entropy", 0, 20),
  52 +                   BitField("OAM", 0, 2),
  53 +                   BitField("RSV", 0, 2),
  54 +                   BitField("DSCP", 0, 6),
  55 +                   BitEnumField("Proto", 2, 6, BIERnhcls),
  56 +                   ShortField("BFRID", 0),
  57 +                   StrLenField("BitString",
  58 +                               "",
  59 +                               length_from=lambda x:(8 << x.length))]
  60 +
  61 +
  62 +bind_layers(BIER, IP,   Proto=4)
  63 +bind_layers(BIER, IPv6, Proto=5)
  64 +bind_layers(UDP, BIFT, dport=8138)