On Thu, 07 Jun 2018 21:49:07 +0900, Fernández Peña Héctor wrote: > > [1 <multipart/alternative (7bit)>] > [1.1 <text/plain; iso-8859-1 (quoted-printable)>] > Hi > > > Yes, I'm including the payload and I'm using iperf to send the
Where? Your _handle_tcp_fwd doesn't deal with payloads. > traffic. The two hosts connect to each other, but the traffic is not Is a TCP connection established? > sent / does not arrive. When I try to cut the connection to the > destination host, a message appears saying: Waiting for server > threads to complete. Interrupt again to force quit. > I've been going over the API of the TCP packet again, and I do not know if > I'm missing something to add. I have doubts with the serialization, do I need > to put the ipv4 package at the end of it? I mention it for serialize > (payload, prev) You are calling pkt.add_protocol(ipv4.ipv4(...)) before tcp so it should be ok in this POV. Please use tcpdump or whatsoever to debug if you are actually receiving/transmitting correct packets. > http://ryu.readthedocs.io/en/latest/library_packet_ref/packet_tcp.html > > > Regards, Hector > > > ________________________________ > De: IWAMOTO Toshihiro <iwam...@valinux.co.jp> > Enviado: jueves, 7 de junio de 2018 3:58:30 > Para: Fernández Peña Héctor > Cc: ryu-devel@lists.sourceforge.net > Asunto: Re: [Ryu-devel] Problem with TCP traffic > > On Sun, 03 Jun 2018 05:02:16 +0900, > Fernández Peña Héctor wrote: > > > > [1 <multipart/alternative (7bit)>] > > [1.1 <text/plain; iso-8859-1 (quoted-printable)>] > > Hello developers > > > > I'm trying to send TCP traffic between two hosts that are in different > > subnets through a third host that acts as a router > > The VM Router has an ovs implemented which is managed with a ryu app. > > > > The problem is that the VM "router" never forwards traffic tcp. > > I assume you are using packet-in and packet-out to implement routing. > > 1. Are you getting packet-ins? > 2. Is the _handle_tcp_fwd function actually called? > 3. Are you correctly sending packet-outs to ovs? > > > I attached the tcp function: > > > > def _handle_tcp_fwd(self, datapath, port, pkt_ethernet, pkt_ipv4, > > pkt_tcp): > > pkt = packet.Packet() > > if port == 1: > > mac_dst = self.mac_victima > > mac_src = self.hw_addruno > > elif port == 2: > > mac_dst = self.mac_atacante > > mac_src = self.hw_addrdos > > > > pkt.add_protocol(ethernet.ethernet(ethertype=pkt_ethernet.ethertype, > > dst=mac_dst, > > src=mac_src)) > > pkt.add_protocol(ipv4.ipv4(dst=pkt_ipv4.dst, > > src=pkt_ipv4.src, > > proto=pkt_ipv4.proto)) > > pkt.add_protocol(tcp.tcp(src_port=pkt_tcp.src_port, > > dst_port=pkt_tcp.dst_port, > > seq=pkt_tcp.seq, > > ack=pkt_tcp.ack, > > offset=0, > > bits=pkt_tcp.bits, > > window_size=pkt_tcp.window_size, > > csum=0, > > urgent=pkt_tcp.urgent, > > option=pkt_tcp.option)) > > self._send_packet(datapath, port, pkt) > > Are you handling the tcp payloads somewhere? > > -- > IWAMOTO Toshihiro > [1.2 <text/html; iso-8859-1 (quoted-printable)>] > [2 <text/plain; us-ascii (7bit)>] > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > [3 <text/plain; us-ascii (7bit)>] > _______________________________________________ > Ryu-devel mailing list > Ryu-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ryu-devel ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Ryu-devel mailing list Ryu-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ryu-devel
