Hi,
Currently, Ryu does not provides such feature, you need to implement it.
But just an idea,
JSON representation is might be convenient for such purpose, I guess.
"ryu.lib.ofctl_v1_3" can accept JSON like dictionary as input,
so you can describe flows as JSON.
The following example installs flows at switch connection from JSON file.
e.g.)
$ cat sample_flows.json
[
{
"dpid": 1,
"match": {
"in_port": 1
},
"actions": [
{
"type": "OUTPUT",
"port": 2
}
]
},
{
"dpid": 1,
"match": {
"in_port": 2
},
"actions": [
{
"type": "OUTPUT",
"port": 1
}
]
}
]
$ git diff
diff --git a/ryu/app/simple_switch_13.py b/ryu/app/simple_switch_13.py
index 3e7c598..dba09e5 100644
--- a/ryu/app/simple_switch_13.py
+++ b/ryu/app/simple_switch_13.py
@@ -13,6 +13,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+import json
+
from ryu.base import app_manager
from ryu.controller import ofp_event
from ryu.controller.handler import CONFIG_DISPATCHER, MAIN_DISPATCHER
@@ -21,6 +23,7 @@ from ryu.ofproto import ofproto_v1_3
from ryu.lib.packet import packet
from ryu.lib.packet import ethernet
from ryu.lib.packet import ether_types
+from ryu.lib import ofctl_v1_3
class SimpleSwitch13(app_manager.RyuApp):
@@ -48,6 +51,10 @@ class SimpleSwitch13(app_manager.RyuApp):
ofproto.OFPCML_NO_BUFFER)]
self.add_flow(datapath, 0, match, actions)
+ for flow in json.load(open('sample_flows.json')):
+ if datapath.id == flow.get('dpid', 0):
+ ofctl_v1_3.mod_flow_entry(datapath, flow, ofproto.OFPFC_ADD)
+
def add_flow(self, datapath, priority, match, actions, buffer_id=None):
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
Thanks,
Iwase
On 2017年01月24日 20:58, raghu rathode wrote:
> Dear Sir/Madam,
>
> I would like to know, how to pass text file as an argument to Ryu
> application. Which contains a set of rules to install on OpenFlow switches.
>
> For Example:
>
> Switch 00-00-00-00-00-01:
> dl_type=0x0800, nw_src=10.1.0.1/16 <http://10.1.0.1/16>, nw_dst=10.2.0.1/16
> <http://10.2.0.1/16>, in_port=4, actions=mod_dl_src:00:00:12:00:01:03,
> mod_dl_dst:00:00:00:00:00:02, output:3
> dl_type=0x0800, dl_src=00:00:00:00:00:02, dl_dst=00:00:12:00:01:03,
> in_port=3, nw_src=10.1.0.1/16 <http://10.1.0.1/16>, nw_dst=10.2.0.1/16
> <http://10.2.0.1/16>, actions=mod_dl_src:00:00:12:00:01:02,
> mod_dl_dst:00:00:12:00:04:01, output:2
> dl_type=0x0800, dl_src=00:00:12:00:02:01, dl_dst=00:00:12:00:01:01,
> in_port=1, nw_src=10.3.0.1/16 <http://10.3.0.1/16>, nw_dst=10.4.0.1/16
> <http://10.4.0.1/16>, actions=mod_dl_src:00:00:12:
>
>
> --
> Thanks and Regards
> Hari Raghavendar Rao Bandari
> App 10,
> Karolinenweg 20,
> 37075 Goettingen,
> Germany.
>
>
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>
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