I'm trying to create a ryu application for a Mellanox Switch-X switch
which supports Openflow 1.0. In my test setup I have a single server
connected to two ports of the switch and I'd like the switch to perform
the following actions:
1) If a packet is received on port 104, send it to port 102
2) If a packet is received on port 102, send it to port 104
3) Drop any other packets from any other interfaces
The resulting behavior should be the same as if I had connected a cable
from port 1 to port 2 of the server's NIC (i.e. a loopback
configuration), but I'm having some issues and I can't tell if it's the
ryu script or the Mellanox switch operation.
I've adapted the simple_switch.py application and send my flow rules to
the switch as soon as I receive the OFPSwitchFeatures message from the
switch. (Some of the log output is included below.)
The switch seems to be accepting the rules (see switch output even
further below) but no packets are ever forwarded. Can anyone comment on
what I might be doing wrong in my application or point to an example
that performs a similar function?
Dave
======================================================================
=== Log output from host_loopback.py
======================================================================
loading app /src/host_loopback.py
loading app ryu.controller.ofp_handler
instantiating app /src/host_loopback.py of HostLoopback
instantiating app ryu.controller.ofp_handler of OFPHandler
BRICK HostLoopback
CONSUMES EventOFPPortStatus
CONSUMES EventOFPSwitchFeatures
CONSUMES EventOFPPacketIn
CONSUMES EventOFPStateChange
BRICK ofp_event
PROVIDES EventOFPPortStatus TO {'HostLoopback': set(['main'])}
PROVIDES EventOFPSwitchFeatures TO {'HostLoopback': set(['config'])}
PROVIDES EventOFPPacketIn TO {'HostLoopback': set(['main'])}
PROVIDES EventOFPStateChange TO {'HostLoopback': set(['main', 'dead'])}
CONSUMES EventOFPPortStatus
CONSUMES EventOFPEchoReply
CONSUMES EventOFPSwitchFeatures
CONSUMES EventOFPPortDescStatsReply
CONSUMES EventOFPHello
CONSUMES EventOFPErrorMsg
CONSUMES EventOFPEchoRequest
connected socket:<eventlet.greenio.base.GreenSocket object at
0x7f5fbd3c2050> address:('9.114.219.191', 51133)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7f5fbd3c2950>
move onto config mode
EVENT ofp_event->HostLoopback EventOFPSwitchFeatures
switch features ev
version=0x1,msg_type=0x6,msg_len=0x80,xid=0x439c6c3c,OFPSwitchFeatures(actions=15,capabilities=11,datapath_id=16045481059359733200L,n_buffers=0,n_tables=1,ports={104:
OFPPhyPort(port_no=104,hw_addr='00:02:c9:65:35:a7',name='Eth1/6',config=0,state=0,curr=0,advertised=0,supported=0,peer=0),
102:
OFPPhyPort(port_no=102,hw_addr='00:02:c9:65:35:a5',name='Eth1/5',config=0,state=0,curr=0,advertised=0,supported=0,peer=0)})
move onto main mode
EVENT ofp_event->HostLoopback EventOFPStateChange
======================================================================
=== This OFPFlowMod is intended to route packets from
=== port 104 to port 102
======================================================================
mod:
version=None,msg_type=None,msg_len=None,xid=None,OFPFlowMod(actions=[OFPActionOutput(max_len=65509,port=102)],buffer_id=4294967295,command=0,cookie=0,flags=1,hard_timeout=0,idle_timeout=0,match=OFPMatch(dl_dst='\x00\x00\x00\x00\x00\x00',dl_src='\x00\x00\x00\x00\x00\x00',dl_type=0,dl_vlan=0,dl_vlan_pcp=0,in_port=104,nw_dst=0,nw_proto=0,nw_src=0,nw_tos=0,tp_dst=0,tp_src=0,wildcards=4194302),out_port=102,priority=32768)
match:
OFPMatch(dl_dst='\x00\x00\x00\x00\x00\x00',dl_src='\x00\x00\x00\x00\x00\x00',dl_type=0,dl_vlan=0,dl_vlan_pcp=0,in_port=102,nw_dst=0,nw_proto=0,nw_src=0,nw_tos=0,tp_dst=0,tp_src=0,wildcards=4194302),
actions: [OFPActionOutput(max_len=65509,port=104)]
======================================================================
=== This OFPFlowMod is intended to route packets from
=== port 102 to port 104
======================================================================
mod:
version=None,msg_type=None,msg_len=None,xid=None,OFPFlowMod(actions=[OFPActionOutput(max_len=65509,port=104)],buffer_id=4294967295,command=0,cookie=0,flags=1,hard_timeout=0,idle_timeout=0,match=OFPMatch(dl_dst='\x00\x00\x00\x00\x00\x00',dl_src='\x00\x00\x00\x00\x00\x00',dl_type=0,dl_vlan=0,dl_vlan_pcp=0,in_port=102,nw_dst=0,nw_proto=0,nw_src=0,nw_tos=0,tp_dst=0,tp_src=0,wildcards=4194302),out_port=104,priority=32768)
======================================================================
=== This OFPFlowMod is intended to drop all other traffic that doesn't
=== match the previous two rules
======================================================================
mod:
version=None,msg_type=None,msg_len=None,xid=None,OFPFlowMod(actions=[],buffer_id=4294967295,command=0,cookie=0,flags=1,hard_timeout=0,idle_timeout=0,match=OFPMatch(dl_dst='\x00\x00\x00\x00\x00\x00',dl_src='\x00\x00\x00\x00\x00\x00',dl_type=0,dl_vlan=0,dl_vlan_pcp=0,in_port=0,nw_dst=0,nw_proto=0,nw_src=0,nw_tos=0,tp_dst=0,tp_src=0,wildcards=4194303),out_port=65535,priority=0)
switch is running
======================================================================
=== Mellanox switch output
======================================================================
switch-5ecae6 (config) # enable
switch-5ecae6 (config) # configure terminal
switch-5ecae6 (config) # show openflow flows
Flow id: 52
priority: 32768
hard timeout: infinite
idle timeout: 0 sec
ingress interface: Eth1/6
actions:
output port Eth1/5
statistics:
0 packets, 0 bytes
Flow id: 53
priority: 32768
hard timeout: infinite
idle timeout: 0 sec
ingress interface: Eth1/5
actions:
output port Eth1/6
statistics:
558740 packets, 0 bytes
Flow id: 54
priority: 0
hard timeout: infinite
idle timeout: 0 sec
actions:
output drop
statistics:
0 packets, 0 bytes
_______________________________________________
Ryu-devel mailing list
Ryu-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/ryu-devel
