d792d9c01e
- see draft-ietf-bier-mpls-encapsulation-10 - midpoint, head and tail functions - supported payload protocols; IPv4 and IPv6 only. Change-Id: I59d7363bb6fdfdce8e4016a68a9c8f5a5e5791cb Signed-off-by: Neale Ranns <nranns@cisco.com>
46 lines
1.2 KiB
Diff
46 lines
1.2 KiB
Diff
diff --git a/scapy/contrib/bier.py b/scapy/contrib/bier.py
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new file mode 100644
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index 0000000..e173cdb
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--- /dev/null
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+++ b/scapy/contrib/bier.py
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@@ -0,0 +1,39 @@
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+# http://trac.secdev.org/scapy/ticket/31
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+
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+# scapy.contrib.description = MPLS
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+# scapy.contrib.status = loads
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+
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+from scapy.packet import *
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+from scapy.fields import *
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+from scapy.layers.inet import IP
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+from scapy.layers.inet6 import IPv6
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+
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+class BIERLength:
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+ BIER_LEN_64 = 0
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+ BIER_LEN_128 = 1
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+ BIER_LEN_256 = 2
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+
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+
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+
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+BIERnhcls = { 1: "MPLS",
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+ 2: "MPLS",
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+ 4: "IPv4",
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+ 5: "IPv6" }
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+
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+class BIER(Packet):
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+ name = "BIER"
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+ fields_desc = [ BitField("id", 5, 4),
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+ BitField("version", 0, 4),
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+ BitField("length", 0, 4),
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+ BitField("entropy", 0, 20),
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+ BitField("OAM", 0, 2),
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+ BitField("RSV", 0, 2),
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+ BitField("DSCP", 0, 6),
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+ BitEnumField("Proto", 2, 6, BIERnhcls),
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+ ShortField("BFRID", 0),
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+ StrFixedLenField("BitString",
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+ chr(255)*32, 32) ]
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+
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+
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+bind_layers(BIER, IP, Proto=4)
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+bind_layers(BIER, IPv6, Proto=5)
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