Hi, Here is a way to do.
def remove_table_flows(self, datapath, table_id, match, instructions):
"""Create OFP flow mod message to remove flows from table."""
ofproto = datapath.ofproto
flow_mod = datapath.ofproto_parser.OFPFlowMod(datapath, 0, 0,
table_id,
ofproto.OFPFC_DELETE,
0, 0,
1,
ofproto.OFPCML_NO_BUFFER,
ofproto.OFPP_ANY,
OFPG_ANY, 0,
match, instructions)
return flow_mod
Use this part where you want to delete all the flows.
empty_match = parser.OFPMatch()
instructions = []
flow_mod = self.remove_table_flows(datapath, 0,
empty_match, instructions)
print "deleting all flow entries in table ", 0
datapath.send_msg(flow_mod)
Cheers.
2014-05-13 10:04 GMT-03:00 chen zhang <[email protected]>:
> hi,everyone:
> when i want to remove all flows of table 1.i code that
> " match = parser.OFPMatch()
> instructions = []
> flow_mod = datapath.ofproto_parser.OFPFlowMod(datapath, 0, 0,
> table_id,
>
> ofproto.OFPFC_DELETE, 0, 0,
> 1,
>
> ofproto.OFPCML_NO_BUFFER,
> ofproto.OFPP_ANY,
> ofproto.OFPG_ANY, 0,
> match, instructions)
> datapath.send_msg(flow_mod)"
>
> when ovs-ofctl snoop s1,ovs tells that
> "OFPT_FLOW_MOD (OF1.3) (xid=0x5f86181b): DEL table:3 priority=1
> buf:0xffff actions=drop"
> and it fails to delete the flow entry of priority of 32768 and
> 0.is it concerned with priority field?but i think the priority is
> neglected in OFPC_DELETE .
> and does "actions=drop" impact the flow_delete?if it does,how
> should i specify the aciton field?
>
>
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