Hello again, Fujimoto, I have tried your patch in a clean Python3 virtualenv, and the issue still remains. Although my code properly setups the OF Switch, the log still shows the "unknown barrier xid" message.
Is it supposed to be like this? Thank you for your support! Carlos Ferreira On 17 October 2017 at 02:36, Fujimoto Satoshi <satoshi.fujimo...@gmail.com> wrote: > Hi, Carlos > > I've submitted a patch which enables to send a single OFPBarrierRequest: > [PATCH] app/ofctl: Enable to send single BarrierRequest > https://sourceforge.net/p/ryu/mailman/message/36079164/ > > With this, you can make a waiting point as follows: > > for ofp_port in ports: > if 0 <= ofp_port.port_no < ofp.OFPP_MAX: > datapath.send_msg( > ofp_parser.OFPPortMod( > datapath=datapath, > port_no=ofp_port.port_no, > hw_addr=ofp_port.hw_addr, > config=ofp.OFPPC_PORT_DOWN, > mask=ofp.OFPPC_PORT_DOWN, > advertise=0 > ) > ) > api.send_msg(myRyuApp, ofp_parser.OFPBarrierRequest(datapath), > reply_cls=ofp_parser.OFPBarrierReply) > > Could you try with this patch? > > Thanks, > Fujimoto > > > > On 2017年10月16日 19:10, Carlos Ferreira wrote: > > Thank you for your support Fujimoto > > I wanted to send an OFPBarrierRequest because my intention was to have > a point where my Python code waits. > > For example, I wanted to send messages to the switch to disable all > ports, and in the end, I send the BarrierRequest to ensure that all > ports are down before continuing. > > This is my current code: > > # Stage 1 -> Disable all switching ports > for ofp_port in ports: > if 0 <= ofp_port.port_no < ofp.OFPP_MAX: > datapath.send_msg( > ofp_parser.OFPPortMod( > datapath=datapath, > port_no=ofp_port.port_no, > hw_addr=ofp_port.hw_addr, > config=ofp.OFPPC_PORT_DOWN, > mask=ofp.OFPPC_PORT_DOWN, > advertise=0 > ) > ) > ctrl_send_msg(ofp_parser.OFPBarrierRequest(datapath), > reply_cls=ofp_parser.OFPBarrierReply) > > > Am I doing this right? > > Carlos Ferreira > > > On 16 October 2017 at 03:19, Fujimoto Satoshi > <satoshi.fujimo...@gmail.com> wrote: > > Hi, Carlos > > I think you've called api.send_msg() correctly, > however, when you call api.send_msg(), the controller sends an > OFPBarrierRequest in this function: > https://github.com/osrg/ryu/blob/master/ryu/app/ofctl/service.py#L141-L142 > > After this, the controller will receive an OFPBarrierReply and inspect it in > this function: > https://github.com/osrg/ryu/blob/master/ryu/app/ofctl/service.py#L145 > > This function will be called when it received OFPBarrierReplies. > > So, > > api.send_msg(myRyuApp, > ofp_parser.OFPBarrierRequest(datapath),reply_cls=ofp_parser.OFPBarrierReply) > > this will sends two OFPBarrierRequests, and the controller will receive two > replies. > Then, the controller will mistake which packet should be inspected, and > error occurs. > > In the other words, I think you don't need to make and send an > OFPBarrierRequest by yourself, > because api.send_msg() will take care of the consistency of message order by > using OFPBarrierRequests. > Or, is there a reason why you have to manage it? > > Thanks, > Fujimoto > > > On 2017年10月14日 02:15, Carlos Ferreira wrote: > > Update: > > I noticed that the call to api.send_msg with a Barrier Message wasn't > blocking at all. > It was blocking in the next call for an OFPFlowMod. > > But I still receive the "unknown barrier xid 103043043" at the logs. > What is going on? Is my application really waiting for the Barrier > Message Reply before advancing? > > Carlos > > On 13 October 2017 at 17:12, Carlos Ferreira <carlosmf...@gmail.com> > wrote: > > Hello > > I'm trying to use the Ryu synchrounous API to send and wait for the > execution of a Barrier message. > > I'm using the same implementation presented in: > > http://ryu.readthedocs.io/en/latest/app/ofctl.html#ryu.app.ofctl.api.send_msg > > For some reason unknown to me, calling > > "api.send_msg(myRyuApp, ofp_parser.OFPBarrierRequest(datapath), > reply_cls=ofp_parser.OFPBarrierReply)" > > will lock and not return, while at the console, a "unknown barrier xid > 103043043" will be printed. > > Am I calling api.send_msg correctly? > > Thank you for the assistance > Carlos Ferreira > > ------------------------------------------------------------------------------ > 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 > > ------------------------------------------------------------------------------ > 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 > > -- Carlos Miguel Ferreira Researcher at Telecommunications Institute Aveiro - Portugal Work E-mail - c...@av.it.pt Skype & GTalk -> carlosmf...@gmail.com LinkedIn -> http://www.linkedin.com/in/carlosmferreira ------------------------------------------------------------------------------ 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
