Thanks Fujita,
I solved the switch feature problem but!!!
As I explained before in my project I should add some extra functionality
to the ryu controller in order to handle this feature in my openflow
switch.
So in this direction in ofproto_v1_3.py and ofproto_v1_3_parser.py I added
2 extra structure according to my requirements.
ofproto_v1_3.py
#state ofp_state_mod
OFP_STATE_MOD_PACK_STR='!QQBB'
OFP_STATE_MOD_SIZE =26
assert (calcsize(OFP_STATE_MOD_PACK_STR)) + OFP_HEADER_SIZE
==OFP_STATE_MOD_SIZE
#struct ofp_state_mod_extraction
MAX_FIELD_COUNT=6
OFP_STATE_MOD_EXTRACT_PACK_STR='!I'
OFP_STATE_MOD_EXTRACT_SIZE = 4
assert (calcsize(OFP_STATE_MOD_EXTRACT_PACK_STR)==
OFP_STATE_MOD_EXTRACT_SIZE)
but once I use the new structure and send a new msg to switch it gives me:
error msg ev version: 0x4 msg_type 0x1e xid 0x49730318
OFPErrorMsg(code=10,data='\x04\x1e\x00"Is\x03\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x01\x80\x00\x06\x06',type=1)
type 0x1 code 0xa 0x4 0x1e 0x0 0x22 0x49 0x73 0x3 0x18 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x2 0x0 0x0 0x0 0x1 0x80
0x0 0x6 0x6
here is the serializer function
ofproto_v1_3_parser.py
@_set_msg_type(ofproto.OFPT_STATE_MOD)
class OFPKeyExtract(MsgBase):
def __init__(self, datapath, command,field_count,fields,cookie=0,
cookie_mask=0, table_id=0
):
super(OFPKeyExtract, self).__init__(datapath)
self.cookie = cookie
self.cookie_mask = cookie_mask
self.table_id = table_id
self.command = command
self.field_count=field_count
self.fields=fields
def _serialize_body(self):
msg_pack_into(ofproto.OFP_STATE_MOD_PACK_STR,self.buf,ofproto.OFP_HEADER_SIZE,self.cookie,self.cookie_mask
,self.table_id,self.command)
offset=ofproto.OFP_STATE_MOD_SIZE
msg_pack_into(ofproto.OFP_STATE_MOD_EXTRACT_PACK_STR,self.buf,offset,self.field_count)
offset += ofproto.OFP_STATE_MOD_EXTRACT_SIZE
field_extract_format='!I'
msg_pack_into(field_extract_format, self.buf,offset,self.fields[0])
if self.field_count <= ofproto.MAX_FIELD_COUNT:
for f in range(self.field_count):
msg_pack_into(field_extract_format,
buf,offset,self.fields[f])
offset +=1
else:
print("You have inserted more than allowed field numbers")
I 'm really got confused how to debug this type of error, I should mention
I've already added new ofp_type to the protocol type list.
Thanks in advance.
Hanieh
On Tue, Apr 15, 2014 at 5:42 AM, FUJITA Tomonori <
[email protected]> wrote:
> Hi,
>
> On Fri, 11 Apr 2014 12:48:35 +0200
> Hanieh Rajabi <[email protected]> wrote:
>
> > Since I have added extra functionality to my openflow 1.3, I need the
> > controller app send the feature request to the switch to inquiry about
> the
> > new added feature.
> > But by running
> >
> > @set_ev_cls(ofp_event.EventOFPSwitchFeatures, CONFIG_DISPATCHER)
> > def switch_features_handler(self, ev)
> >
> > def send_features_request(self, datapath):
> > ofp_parser = datapath.ofproto_parser
> >
> > req = ofp_parser.OFPFeaturesRequest(datapath)
> > datapath.send_msg(req)
> >
> > event and event hander, It seems by default ev.msg return:
> >
> > switch features ev version: 0x4 msg_type 0x6 xid 0x2e11eb2e
> >
> OFPSwitchFeatures(auxiliary_id=0,capabilities=79,datapath_id=1,n_buffers=256,n_tables=64)
> >
> > As I debuged my switch, msg feature request is not sent by controller to
> > switch for new capabilities.
> > I have to imply that new capabilities has been added enum
> ofp_capabilities
> > in ofproto_v1_3.py<
> https://github.com/osrg/ryu/blob/master/ryu/ofproto/ofproto_v1_3.py>
> >
> > Is there any default event generator in ryu that generate this event
> > without asking from the switch.
>
> I'm not sure I understand correctly your question. If you mean that
> Ryu sends OFPSwitchFeaturesRequest, then yes:
>
> https://github.com/osrg/ryu/blob/master/ryu/controller/ofp_handler.py#L178
>
> You can find the handler for the response below.
>
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