Hello everyone,
I want to add/delete flows from my application when link_add/link_delete
occurs. I create two separate handler function for link_add and link_delete
which are decorated with corresponding event function. But in those functions I
only have src, dst and src_port(connected to dst). But without any datapath
object (ryu.controller.controller.Datapath) I cannot call my add_flow function.
My add_flow function is given below. Can anyone please tell me how can I call
the add_flow function from another function beside _packet_in_handler with the
information(src, src_port, dst) i have? Is there any better process to
add/delete flows without using packet_in_handler?
def add_flow(self, datapath, dst, actions):
ofproto = datapath.ofproto
match = datapath.ofproto_parser.OFPMatch(
eth_type=0x800, ipv4_dst=dst)
inst =
[datapath.ofproto_parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS,
actions)]
mod = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath, match=match, cookie=0,
command=ofproto.OFPFC_ADD, idle_timeout=0, hard_timeout=0,
priority=ofproto.OFP_DEFAULT_PRIORITY,
flags=ofproto.OFPFF_SEND_FLOW_REM, instructions= inst)
datapath.send_msg(mod)
Thanking you
Sakib
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