% Tests for OpenFlow v1.3 with Scapy

+ Fields

= GroupDescPacketListField(), check getfield
remain, lst = GroupDescPacketListField(None, None, None).getfield(None, b'\x00\x10')
not remain
all([OFPGroupDesc in gd for gd in lst])
lst[0].length == 0x0010

+ Usual OFv1.3 messages

= OFPTHello(), hello without version bitmap
ofm = OFPTHello()
raw(ofm) == b'\x04\x00\x00\x08\x00\x00\x00\x00'

= OFPTEchoRequest(), echo request
ofm = OFPTEchoRequest()
raw(ofm) == b'\x04\x02\x00\x08\x00\x00\x00\x00'

= OFPMatch(), check padding
ofm = OFPMatch(oxm_fields=OFBEthType(eth_type=0x86dd))
assert(len(raw(ofm))%8 == 0)
raw(ofm) == b'\x00\x01\x00\x0a\x80\x00\x0a\x02\x86\xdd\x00\x00\x00\x00\x00\x00'

= OpenFlow(), generic method test with OFPTEchoRequest()
ofm = OFPTEchoRequest()
s = raw(ofm)
isinstance(OpenFlow(None,s)(s), OFPTEchoRequest)

= OFPTFlowMod(), check codes and defaults values
ofm = OFPTFlowMod(cmd='OFPFC_DELETE', out_group='ALL', flags='CHECK_OVERLAP+NO_PKT_COUNTS')
assert(ofm.cmd == 3)
assert(ofm.out_port == 0xffffffff)
assert(ofm.out_group == 0xfffffffc)
ofm.flags == 10

= OFBIPv6ExtHdrHMID(), check creation of last OXM classes
assert(hasattr(OFBIPv6ExtHdr(), 'ipv6_ext_hdr_flags'))
OFBIPv6ExtHdrHMID().field == 39

+ Complex OFv1.3 messages

= OFPTFlowMod(), complex flow_mod
mtc = OFPMatch(oxm_fields=OFBVLANVID(vlan_vid=10))
ist1 = OFPITApplyActions(actions=[OFPATSetField(field=OFBIPv4Src(ipv4_src='192.168.10.41')),OFPATSetField(field=OFBEthSrc(eth_src='1a:d5:cb:4e:3c:64')),OFPATOutput(port='NORMAL')])
ist2 = OFPITWriteActions(actions=OFPATOutput(port='CONTROLLER'))
ofm = OFPTFlowMod(table_id=2, match=mtc, instructions=[ist1,ist2])
hexdump(ofm)
s = b'\x04\x0e\x00\x90\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x01\x00\x0a\x80\x00\x0c\x02\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x04\x00\x38\x00\x00\x00\x00\x00\x19\x00\x10\x80\x00\x16\x04\xc0\xa8\x0a\x29\x00\x00\x00\x00\x00\x19\x00\x10\x80\x00\x08\x06\x1a\xd5\xcb\x4e\x3c\x64\x00\x00\x00\x00\x00\x10\xff\xff\xff\xfa\xff\xff\x00\x00\x00\x00\x00\x00\x00\x03\x00\x18\x00\x00\x00\x00\x00\x00\x00\x10\xff\xff\xff\xfd\xff\xff\x00\x00\x00\x00\x00\x00'
raw(ofm) == s

= OFPETBadRequest() containing a flow_mod with wrong table_id
flowmod = OFPTFlowMod(instructions=OFPITGotoTable(table_id=0))
ofm = OFPETBadRequest(errcode='OFPBRC_BAD_TABLE_ID', data=raw(flowmod))
hexdump(ofm)
s = b'\x04\x01\x00L\x00\x00\x00\x00\x00\x01\x00\t\x04\x0e\x00@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x01\x00\x04\x00\x00\x00\x00\x00\x01\x00\x08\x00\x00\x00\x00'
raw(ofm) == s

= OFPTPacketIn() containing an Ethernet frame
ofm = OFPTPacketIn(data=Ether()/IP()/ICMP())
p = OFPTPacketIn(raw(ofm))
dat = p.data
assert(isinstance(dat, Ether))
assert(isinstance(dat.payload, IP))
isinstance(dat.payload.payload, ICMP)

+ Layer bindings

= TCP()/OFPMPRequestDesc(), check default sport
p = TCP()/OFPMPRequestDesc()
p[TCP].sport == 6653

= TCP()/OFPETHelloFailed(), check default dport
p = TCP()/OFPETHelloFailed()
p[TCP].dport == 6653

= TCP()/OFPTHello() dissection, check new TCP.guess_payload_class
o = TCP()/OFPTHello()
p = TCP(raw(o))
p[TCP].sport == 6653
isinstance(p[TCP].payload, OFPTHello)

= complete Ether()/IP()/TCP()/OFPTFeaturesRequest()
ofm = Ether(src='00:11:22:33:44:55',dst='01:23:45:67:89:ab')/IP(src='10.0.0.7',dst='192.168.0.42')/TCP(sport=6633)/OFPTFeaturesRequest(xid=23)
s = b'\x01#Eg\x89\xab\x00\x11"3DU\x08\x00E\x00\x000\x00\x01\x00\x00@\x06\xaf\xee\n\x00\x00\x07\xc0\xa8\x00*\x19\xe9\x00P\x00\x00\x00\x00\x00\x00\x00\x00P\x02 \x00\xa6\xa4\x00\x00\x04\x05\x00\x08\x00\x00\x00\x17'
assert(raw(ofm) == s)
e = Ether(s)
e.show2()
e[OFPTFeaturesRequest].xid == 23