Re: [Ryu-devel] TCP_SRC/TCP_DST
Hi,
Does "msg" mean an instance of OFPPacketIn?
http://ryu.readthedocs.io/en/latest/ofproto_v1_3_ref.html#ryu.ofproto.ofproto_v1_3_parser.OFPPacketIn
If so, you can parse the packet data which contained in OFPPacketIn
with the Packet library.
http://ryu.readthedocs.io/en/latest/library_packet.html
For extracting the TCP src/dst port from msg.data:
$ git diff
diff --git a/ryu/app/simple_switch_13.py b/ryu/app/simple_switch_13.py
index 3e7c598..899fc01 100644
--- a/ryu/app/simple_switch_13.py
+++ b/ryu/app/simple_switch_13.py
@@ -21,6 +21,7 @@ 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.packet import tcp
class SimpleSwitch13(app_manager.RyuApp):
@@ -79,6 +80,11 @@ class SimpleSwitch13(app_manager.RyuApp):
pkt = packet.Packet(msg.data)
eth = pkt.get_protocols(ethernet.ethernet)[0]
+pkt_tcp = pkt.get_protocol(tcp.tcp)
+if pkt_tcp: # check if the received packet is TCP or not
+self.logger.info('pkt_tcp.src_port=%d, pkt_tcp.dst_port=%s',
+ pkt_tcp.src_port, pkt_tcp.dst_port)
+
if eth.ethertype == ether_types.ETH_TYPE_LLDP:
# ignore lldp packet
return
$ ryu-manager ryu/app/simple_switch_13.py
loading app ryu/app/simple_switch_13.py
loading app ryu.controller.ofp_handler
instantiating app ryu.controller.ofp_handler of OFPHandler
instantiating app ryu/app/simple_switch_13.py of SimpleSwitch13
...(snip)
pkt_tcp.src_port=50586, pkt_tcp.dst_port=80
...(snip)
Thanks,
Iwase
On 2016年09月27日 22:34, Aidin Kelki wrote:
> Thank you for your reply. The thing is I need to also get the port number of
> each flow in match section so in flow table ,I should have src_mac,
> dst_mac,ip_proto, eth_type, tcp/udp_src,tcp/udp_dst. The problem is I have
> all of other feature but cannot get tcp/udp_src, tcp_udp_dst.
>
> I also configured the switch for tcp to have:
>
> Ip_proto=6
>
> Eth_type = 0x800
>
> And for udp:
>
> Ip_proto = 17
>
> Eth_type = 0x800
>
> The portion of code that do the match for me is:
>
> ethtype = msg.match['eth_type']
>
> if ethtype == 0x800 and ipproto in [ 1, 6, 17]:
> ipsrc = msg.match['ipv4_src']
> ipdst = msg.match['ipv4_dst']
> match = ofparser.OFPMatch(eth_type=0x0800, eth_src=
> src,eth_dst=dst, ip_proto = ipproto , ipv4_src = ipsrc,ipv4_dst = ipdst )
> else:
> match = ofparser.OFPMatch(eth_type=ethtype,
> eth_src= src,eth_dst=dst)
>
>
> but I don't know how to add for example tcp/udp_src and tcp/udp_dst to the
> msg because with print msg I see none of the mentioned feature.
> I would appreciated if you point me into a right direction.
> Thank you again.
>
> Best regards
> AK
>
> ____________
> From: Iwase Yusuke
> Sent: Tuesday, September 27, 2016 8:03 AM
> To: aidin.ke...@hotmail.com
> Cc: ryu-devel@lists.sourceforge.net
> Subject: Re: [Ryu-devel] TCP_SRC/TCP_DST
>
> Hi,
>
> What exactly error did you get?
>
> For adding tcp_src/tcp_dst match fields, please check the "7.2.3.6 Flow
> Match Field Prerequisite" in OpenFlow Spec 1.3, first.
>
> For example, if you want to add tcp_dst=80, you also need to specify
> eth_type=0x0800 and ip_proto=6.
>
>
> $ git diff
> diff --git a/ryu/app/simple_switch_13.py b/ryu/app/simple_switch_13.py
> index 3e7c598..9f29041 100644
> --- a/ryu/app/simple_switch_13.py
> +++ b/ryu/app/simple_switch_13.py
> @@ -48,6 +48,11 @@ class SimpleSwitch13(app_manager.RyuApp):
> ofproto.OFPCML_NO_BUFFER)]
> self.add_flow(datapath, 0, match, actions)
>
> +match = parser.OFPMatch(eth_type=0x0800, ip_proto=6, tcp_dst=80)
> +actions = [parser.OFPActionOutput(ofproto.OFPP_CONTROLLER,
> + ofproto.OFPCML_NO_BUFFER)]
> +self.add_flow(datapath, 0, match, actions)
> +
> def add_flow(self, datapath, priority, match, actions, buffer_id=None):
> ofproto = datapath.ofproto
> parser = datapath.ofproto_parser
>
>
> $ sudo mn --controller remote
> ...(snip)
> mininet> sh ovs-ofctl dump-flows s1
> NXST_FLOW reply (xid=0x4):
> cookie=0x0, duration=11.877s, table=0, n_packets=0, n_bytes=0, idle_age=11,
> priority=0 actions=CONTROLLER:65535
> cookie=0x0, duration=11.877s, table=0, n_packets=0, n_bytes=0, idle_age=11,
> priority=0,tcp,tp_dst=80 actions=CONTROLLER:65535
>
>
> Thanks,
> Iwase
>
>
Re: [Ryu-devel] TCP_SRC/TCP_DST
Thank you for your reply. The thing is I need to also get the port number of each flow in match section so in flow table ,I should have src_mac, dst_mac,ip_proto, eth_type, tcp/udp_src,tcp/udp_dst. The problem is I have all of other feature but cannot get tcp/udp_src, tcp_udp_dst. I also configured the switch for tcp to have: Ip_proto=6 Eth_type = 0x800 And for udp: Ip_proto = 17 Eth_type = 0x800 The portion of code that do the match for me is: ethtype = msg.match['eth_type'] if ethtype == 0x800 and ipproto in [ 1, 6, 17]: ipsrc = msg.match['ipv4_src'] ipdst = msg.match['ipv4_dst'] match = ofparser.OFPMatch(eth_type=0x0800, eth_src= src,eth_dst=dst, ip_proto = ipproto , ipv4_src = ipsrc,ipv4_dst = ipdst ) else: match = ofparser.OFPMatch(eth_type=ethtype, eth_src= src,eth_dst=dst) but I don't know how to add for example tcp/udp_src and tcp/udp_dst to the msg because with print msg I see none of the mentioned feature. I would appreciated if you point me into a right direction. Thank you again. Best regards AK From: Iwase Yusuke Sent: Tuesday, September 27, 2016 8:03 AM To: aidin.ke...@hotmail.com Cc: ryu-devel@lists.sourceforge.net Subject: Re: [Ryu-devel] TCP_SRC/TCP_DST Hi, What exactly error did you get? For adding tcp_src/tcp_dst match fields, please check the "7.2.3.6 Flow Match Field Prerequisite" in OpenFlow Spec 1.3, first. For example, if you want to add tcp_dst=80, you also need to specify eth_type=0x0800 and ip_proto=6. $ git diff diff --git a/ryu/app/simple_switch_13.py b/ryu/app/simple_switch_13.py index 3e7c598..9f29041 100644 --- a/ryu/app/simple_switch_13.py +++ b/ryu/app/simple_switch_13.py @@ -48,6 +48,11 @@ class SimpleSwitch13(app_manager.RyuApp): ofproto.OFPCML_NO_BUFFER)] self.add_flow(datapath, 0, match, actions) +match = parser.OFPMatch(eth_type=0x0800, ip_proto=6, tcp_dst=80) +actions = [parser.OFPActionOutput(ofproto.OFPP_CONTROLLER, + ofproto.OFPCML_NO_BUFFER)] +self.add_flow(datapath, 0, match, actions) + def add_flow(self, datapath, priority, match, actions, buffer_id=None): ofproto = datapath.ofproto parser = datapath.ofproto_parser $ sudo mn --controller remote ...(snip) mininet> sh ovs-ofctl dump-flows s1 NXST_FLOW reply (xid=0x4): cookie=0x0, duration=11.877s, table=0, n_packets=0, n_bytes=0, idle_age=11, priority=0 actions=CONTROLLER:65535 cookie=0x0, duration=11.877s, table=0, n_packets=0, n_bytes=0, idle_age=11, priority=0,tcp,tp_dst=80 actions=CONTROLLER:65535 Thanks, Iwase On 2016?09?23? 02:20, Aidin Kelki wrote: > Hi guys > > > I am trying to add tcp_src/tcp_dst to the flow table but whenever I run Ryu, > it gives me error. also I checked the msg but there is no tcp(src_port, > dst_port). I want to ask how to add tcp_src/tcp_dst to match so I can get > that from the flow? > > > Thank you > > > > -- > > > > ___ > Ryu-devel mailing list > Ryu-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ryu-devel > -- ___ Ryu-devel mailing list Ryu-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ryu-devel
Re: [Ryu-devel] TCP_SRC/TCP_DST
Hi, What exactly error did you get? For adding tcp_src/tcp_dst match fields, please check the "7.2.3.6 Flow Match Field Prerequisite" in OpenFlow Spec 1.3, first. For example, if you want to add tcp_dst=80, you also need to specify eth_type=0x0800 and ip_proto=6. $ git diff diff --git a/ryu/app/simple_switch_13.py b/ryu/app/simple_switch_13.py index 3e7c598..9f29041 100644 --- a/ryu/app/simple_switch_13.py +++ b/ryu/app/simple_switch_13.py @@ -48,6 +48,11 @@ class SimpleSwitch13(app_manager.RyuApp): ofproto.OFPCML_NO_BUFFER)] self.add_flow(datapath, 0, match, actions) +match = parser.OFPMatch(eth_type=0x0800, ip_proto=6, tcp_dst=80) +actions = [parser.OFPActionOutput(ofproto.OFPP_CONTROLLER, + ofproto.OFPCML_NO_BUFFER)] +self.add_flow(datapath, 0, match, actions) + def add_flow(self, datapath, priority, match, actions, buffer_id=None): ofproto = datapath.ofproto parser = datapath.ofproto_parser $ sudo mn --controller remote ...(snip) mininet> sh ovs-ofctl dump-flows s1 NXST_FLOW reply (xid=0x4): cookie=0x0, duration=11.877s, table=0, n_packets=0, n_bytes=0, idle_age=11, priority=0 actions=CONTROLLER:65535 cookie=0x0, duration=11.877s, table=0, n_packets=0, n_bytes=0, idle_age=11, priority=0,tcp,tp_dst=80 actions=CONTROLLER:65535 Thanks, Iwase On 2016年09月23日 02:20, Aidin Kelki wrote: > Hi guys > > > I am trying to add tcp_src/tcp_dst to the flow table but whenever I run Ryu, > it gives me error. also I checked the msg but there is no tcp(src_port, > dst_port). I want to ask how to add tcp_src/tcp_dst to match so I can get > that from the flow? > > > Thank you > > > > -- > > > > ___ > Ryu-devel mailing list > Ryu-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ryu-devel > -- ___ Ryu-devel mailing list Ryu-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ryu-devel
[Ryu-devel] TCP_SRC/TCP_DST
Hi guys I am trying to add tcp_src/tcp_dst to the flow table but whenever I run Ryu, it gives me error. also I checked the msg but there is no tcp(src_port, dst_port). I want to ask how to add tcp_src/tcp_dst to match so I can get that from the flow? Thank you -- ___ Ryu-devel mailing list Ryu-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ryu-devel
