Hi,
I have been trying to send a Flow Mod Message to the Openflow stack which sets
a masked IP address. However, on the OF side no mask is present in the received
message. How do I go about correctly setting the mask for this field?
Code:
def add_flow(self, datapath, in_port, dst, priority, actions, match, inst,
cookie=0):
ofproto = datapath.ofproto
ofproto_par = datapath.ofproto_parser
mod = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath,
cookie=cookie,
cookie_mask=0,
table_id=0,
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=0,
priority=priority,
buffer_id=0xffffffff,
out_port=0,
out_group=0,
flags=ofproto.OFPFF_CHECK_OVERLAP,
match=match,
instructions=inst)
datapath.send_msg(mod)
# Send Flow Mod Once an Echo Reply has been received
@set_ev_cls(ofp_event.EventOFPEchoReply, MAIN_DISPATCHER)
def rxEchoReply(self, ev):
datapath = ev.msg.datapath
################
# Start tests
self.createFlows(datapath)
time.sleep(1)
raw_input("Press Enter to delete")
self.deleteFlows(datapath)
# End tests
################
self.async_get(datapath)
def createFlows(self, datapath):
ofp = datapath.ofproto
ofproto_par = datapath.ofproto_parser
type_ = datapath.ofproto.OXM_OF_IPV4_SRC
value = iptoint('192.168.2.1')
f1 = ofproto_par.OFPMatchField.make(type_,value)
actions = [ofproto_par.OFPActionSetField(f1),
ofproto_par.OFPActionOutput(1,1600)]
inst = [ofproto_par.OFPInstructionActions(ofp.OFPIT_APPLY_ACTIONS,
actions)]
dst = "ab:cd:ef:12:34:56"
pri = 1
match = ofproto_par.OFPMatch()
match.set_dl_type(0x800)
match.set_ipv4_src(value)
self.add_flow(datapath, 1, dst, pri, actions, match, inst,
cookie=0xdead)
type_ = datapath.ofproto.OXM_OF_IPV4_SRC
value = iptoint('192.169.2.1')
mask = self.get_ip_mask_from_prefix_length(32)
f1 = ofproto_par.OFPMatchField.make(type_,value)
actions = [ofproto_par.OFPActionSetField(f1),
ofproto_par.OFPActionOutput(1,1600)]
inst = [ofproto_par.OFPInstructionActions(ofp.OFPIT_APPLY_ACTIONS,
actions)]
dst = "ab:cd:ef:12:34:56"
pri = 1
match = ofproto_par.OFPMatch()
match.set_dl_type(0x800)
match.set_ipv4_src_masked(value, mask)
self.add_flow(datapath, 1, dst, pri, actions, match, inst,
cookie=0xbeef)
def deleteFlows(self, datapath):
ofp = datapath.ofproto
ofproto_par = datapath.ofproto_parser
type_ = datapath.ofproto.OXM_OF_IPV4_SRC_W
mask = self.get_ip_mask_from_prefix_length(32)
ip = iptoint('192.168.2.1')
f1 = ofproto_par.MTIPV4Src.make(type_,ip,mask)
actions = [ofproto_par.OFPActionSetField(f1),
ofproto_par.OFPActionOutput(1,1600)]
inst = [ofproto_par.OFPInstructionActions(ofp.OFPIT_APPLY_ACTIONS,
actions)]
dst = "ab:cd:ef:12:34:56"
pri = 1
match = ofproto_par.OFPMatch()
match.set_dl_type(0x800)
match.set_ipv4_src_masked(ip, mask)
self.delete_flow(datapath, 1, dst, pri, actions, match, inst,
cookie=0xdead)
I have done some debugging on the Openflow side and I can see that the incoming
message has the correct match field data set (192.168.2.1), but the mask field
is 0 (and the oxm header flag is also 0).
Any help you can offer is much appreciated.
Thanks,
Adam Humphreys
Reception : +44 (0)28 9072 5000
Fax : +44 (0)28 9072 5001
www.asidua.com
Registered in Northern Ireland No. 043987
Office Locations: Belfast Birmingham Dublin
We only send and receive email on the basis of the term set out at
www.asidua.com/portal/email-disclaimer
Please consider the impact on the environment before printing this e-mail
------------------------------------------------------------------------------
October Webinars: Code for Performance
Free Intel webinars can help you accelerate application performance.
Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from
the latest Intel processors and coprocessors. See abstracts and register >
http://pubads.g.doubleclick.net/gampad/clk?id=60135031&iu=/4140/ostg.clktrk
_______________________________________________
Ryu-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ryu-devel
