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authorNeale Ranns <neale.ranns@cisco.com>2018-01-31 11:35:41 -0800
committerDamjan Marion <dmarion.lists@gmail.com>2018-02-06 12:44:08 +0000
commitf051072f8518097cbce1a8a20510c4e43cb7167c (patch)
tree7d113687fff867ee46013612b3d1693f0cc2aee8 /test/patches/scapy-2.3.3
parent7e2c31aba2aa9c2ffbcce235a8cc3c673aba2d2e (diff)
BIER: fix support for longer bit-string lengths
Change-Id: I2421197b76be58099e5f8ed5554410adff202109 Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Diffstat (limited to 'test/patches/scapy-2.3.3')
-rw-r--r--test/patches/scapy-2.3.3/bier.patch65
1 files changed, 35 insertions, 30 deletions
diff --git a/test/patches/scapy-2.3.3/bier.patch b/test/patches/scapy-2.3.3/bier.patch
index 50814d41315..82a881e9997 100644
--- a/test/patches/scapy-2.3.3/bier.patch
+++ b/test/patches/scapy-2.3.3/bier.patch
@@ -3,10 +3,10 @@ new file mode 100644
index 0000000..e173cdb
--- /dev/null
+++ b/scapy/contrib/bier.py
-@@ -0,0 +1,53 @@
+@@ -0,0 +1,58 @@
+# http://trac.secdev.org/scapy/ticket/31
+
-+# scapy.contrib.description = MPLS
++# scapy.contrib.description = BIER
+# scapy.contrib.status = loads
+
+from scapy.packet import *
@@ -14,44 +14,49 @@ index 0000000..e173cdb
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+
++
+class BIERLength:
-+ BIER_LEN_64 = 0
-+ BIER_LEN_128 = 1
-+ BIER_LEN_256 = 2
++ BIER_LEN_64 = 0
++ BIER_LEN_128 = 1
++ BIER_LEN_256 = 2
++ BIER_LEN_512 = 3
++ BIER_LEN_1024 = 4
+
+
-+BIERnhcls = { 1: "MPLS",
-+ 2: "MPLS",
-+ 4: "IPv4",
-+ 5: "IPv6" }
++BIERnhcls = {1: "MPLS",
++ 2: "MPLS",
++ 4: "IPv4",
++ 5: "IPv6"}
+
+
+class BIFT(Packet):
-+ name = "BIFT"
-+ fields_desc = [ BitField("bsl", 0, 4),
-+ BitField("sd", 0, 8),
-+ BitField("set", 0, 8),
-+ BitField("cos", 0, 3),
-+ BitField("s", 1, 1),
-+ ByteField("ttl", 0) ]
++ name = "BIFT"
++ fields_desc = [BitField("bsl", 0, 4),
++ BitField("sd", 0, 8),
++ BitField("set", 0, 8),
++ BitField("cos", 0, 3),
++ BitField("s", 1, 1),
++ ByteField("ttl", 0)]
+
-+ def guess_payload_class(self, payload):
-+ return BIER
++ def guess_payload_class(self, payload):
++ return BIER
+
+
+class BIER(Packet):
-+ name = "BIER"
-+ fields_desc = [ BitField("id", 5, 4),
-+ BitField("version", 0, 4),
-+ BitField("length", 0, 4),
-+ BitField("entropy", 0, 20),
-+ BitField("OAM", 0, 2),
-+ BitField("RSV", 0, 2),
-+ BitField("DSCP", 0, 6),
-+ BitEnumField("Proto", 2, 6, BIERnhcls),
-+ ShortField("BFRID", 0),
-+ StrFixedLenField("BitString",
-+ chr(255)*32, 32) ]
++ name = "BIER"
++ fields_desc = [BitField("id", 5, 4),
++ BitField("version", 0, 4),
++ BitFieldLenField("length", BIERLength.BIER_LEN_256, 4,
++ length_of=lambda x:(x.BitString >> 8)),
++ BitField("entropy", 0, 20),
++ BitField("OAM", 0, 2),
++ BitField("RSV", 0, 2),
++ BitField("DSCP", 0, 6),
++ BitEnumField("Proto", 2, 6, BIERnhcls),
++ ShortField("BFRID", 0),
++ StrLenField("BitString",
++ "",
++ length_from=lambda x:(8 << x.length))]
+
+
+bind_layers(BIER, IP, Proto=4)