Hi,
In the del_flow function please assume command=ofproto.OFPFC_DELETE not
ofproto.OFPFC_DELETE_STRICT
Thank you
________________________________
From: Rodriguez Felipe
Sent: Wednesday, November 7, 2018 5:18:32 PM
To: ryu-devel@lists.sourceforge.net
Subject: Question - Flow Deletion
Hi!
I'm using Open Flow 1.3 and I'm trying to delete the flow from the attached
image with the matching fields tcp,in_port=1,nw_dst=10.0.1.21
For deleting the flows I have the following functions:
def del_flow(self, datapath, match, cookie=DEFAULT_COOKIE):
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
# construct flow_mod message and send it.
# TODO: Now using table_id=1 because rest_qos.py is done QoS stuff in
table_id=0
mod = parser.OFPFlowMod(datapath=datapath, match=match,
command=ofproto.OFPFC_DELETE_STRICT,
out_port=ofproto.OFPP_ANY,
out_group=ofproto.OFPG_ANY,
table_id=ofproto.OFPTT_ALL,
cookie=cookie, cookie_mask=0xFFFFFFFFFFFFFFFF)
msg = datapath.send_msg(mod)
def make_match(self, parser, in_port, match_args={}):
match_args['in_port'] = in_port
return parser.OFPMatch(**match_args)
Which are called in the following way:
qos_match_args = {'ip_proto': 6, 'in_port': 1, 'ipv4_dst':
str(ipaddress.IPv4Address(167772437))}
match1 = self.make_match(self.datapaths[entry_dp].ofproto_parser, edge_port_nr,
qos_match_args)
self.del_flow(self.datapaths[entry_dp], match1)
When I try to delete the flow by using only in_port as a match argument it
works, but when
I try to add other matching fields then the flow doesn't get erased. I receive
absolutely no
errors when running the code. I know the other fields "ip_proto" and "ipv4_dst"
are included
in the ofproto_v1_3.py in ryu.
For the record, when running ovs-ofctl del-flows "bridge name"
tcp,in_port=1,nw_dst=10.0.1.21
in the command window the desired flow gets deleted.
Could you help me please?
Best regards,
Felipe Rodriguez
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