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-rw-r--r--resources/libraries/python/SFC/SFCConstants.py1
-rw-r--r--resources/libraries/python/SFC/TunnelProtocol.py6
-rw-r--r--resources/libraries/python/SFC/VerifyPacket.py11
3 files changed, 12 insertions, 6 deletions
diff --git a/resources/libraries/python/SFC/SFCConstants.py b/resources/libraries/python/SFC/SFCConstants.py
index 33391a1771..b9eef22788 100644
--- a/resources/libraries/python/SFC/SFCConstants.py
+++ b/resources/libraries/python/SFC/SFCConstants.py
@@ -31,7 +31,6 @@ class SFCConstants(object):
VxLANGPE_FLAGS = 0xc
VxLANGPE_NEXT_PROTOCOL = 0x4
VxLANGPE_DEFAULT_VNI = 9
- NSH_FLAGS = 0x0
NSH_HEADER_LENGTH = 0x6
NSH_DEFAULT_MDTYPE = 0x1
NSH_NEXT_PROTOCOL = 0x3
diff --git a/resources/libraries/python/SFC/TunnelProtocol.py b/resources/libraries/python/SFC/TunnelProtocol.py
index 4b4377c895..3248cf9103 100644
--- a/resources/libraries/python/SFC/TunnelProtocol.py
+++ b/resources/libraries/python/SFC/TunnelProtocol.py
@@ -35,7 +35,9 @@ class VxLANGPE(Packet):
class NSH(Packet):
"""Define the NSH protocol for the packet analysis."""
name = "nsh"
- fields_desc = [XBitField("flags", 0x0, 10), XBitField("length", 0x6, 6),
- XByteField("MDtype", 0x1), XByteField("nextproto", 0x3),
+ fields_desc = [XBitField("Version", 0x0, 2), XBitField("OAM", 0x0, 1),
+ XBitField("Unassigned", 0x0, 1), XBitField("TTL", 0x0, 6),
+ XBitField("length", 0x6, 6), XBitField("Unassigned", 0x0, 4),
+ XBitField("MDtype", 0x1, 4), XByteField("nextproto", 0x3),
IntField("nsp_nsi", 0), IntField("c1", 0),
IntField("c2", 0), IntField("c3", 0), IntField("c4", 0)]
diff --git a/resources/libraries/python/SFC/VerifyPacket.py b/resources/libraries/python/SFC/VerifyPacket.py
index 189301002c..84eb6aa0a2 100644
--- a/resources/libraries/python/SFC/VerifyPacket.py
+++ b/resources/libraries/python/SFC/VerifyPacket.py
@@ -106,9 +106,14 @@ class VerifyPacket(object):
# get the NSH packet and check it
nsh_pkt = NSH(payload_data[8:32])
- if nsh_pkt.flags != sfccon.NSH_FLAGS:
- raise RuntimeError("Unexpected NSH flags: {0}".
- format(nsh_pkt.flags))
+ if nsh_pkt.Version != 0:
+ raise RuntimeError("Unexpected NSH version: {0}".
+ format(nsh_pkt.Version))
+
+ print type(nsh_pkt.OAM)
+ if nsh_pkt.OAM != 0 or nsh_pkt.OAM != 1:
+ raise RuntimeError("Unexpected NSH OAM: {0}".
+ format(nsh_pkt.OAM))
if nsh_pkt.length != sfccon.NSH_HEADER_LENGTH:
raise RuntimeError("NSH length {0} incorrect".