Hi In OpenFlow 1.3 spec
buffer_id will be OFP_NO_BUFFER(0xffffffff) if switch disable buffer (or there's no buffer in switch). -- Yi 2015-08-19 17:58 GMT+08:00 Vinllen Chen <cvinl...@gmail.com>: > Hi, Yi, > > My switch is hardware switch. The app is written by myself. > So buffer_id equal 0 means disabling buffering, am i right ? > > On Wed, Aug 19, 2015 at 4:35 PM, Yi Tseng <a86487...@gmail.com> wrote: > >> Hi >> >> What switch(ovs? LINE? or real hardware?) you use? >> >> Did you use simple_switch_13? simple_switch_13 use OFPCML_NO_BUFFER for >> packet in (line 47) >> >> >> -- >> Yi >> >> 2015-08-19 16:07 GMT+08:00 Vinllen Chen <cvinl...@gmail.com>: >> >>> Hi, Yi, >>> >>> Do you kown the reason that the buffer_id of message is always 0 ? Does >>> it means that the switch disable the buffering ? >>> >>> Thankyou verymuch. >>> >>> On Wed, Aug 19, 2015 at 3:34 PM, Vinllen Chen <cvinl...@gmail.com> >>> wrote: >>> >>>> Aha, It helped me, thankyou Yi ^_^ >>>> >>>> On Wed, Aug 19, 2015 at 3:13 PM, Yi Tseng <a86487...@gmail.com> wrote: >>>> >>>>> Hi >>>>> >>>>> "data" should be None if you want to use buffer id. >>>>> >>>>> so the code should look like this: >>>>> >>>>> out = datapath.ofproto_parser.OFPPacketOut( >>>>> datapath = datapath, >>>>> buffer_id = msg.buffer_id, >>>>> in_port = datapath.ofproto.OFPP_CONTROLLER, >>>>> actions = actions >>>>> ) >>>>> >>>>> -- >>>>> Yi >>>>> >>>>> 2015-08-19 15:02 GMT+08:00 Vinllen Chen <cvinl...@gmail.com>: >>>>> >>>>>> Hi, all, >>>>>> >>>>>> I want to send packet-out message with buffer_id to let the packet to >>>>>> be reprocess to rego through the pipeline: >>>>>> actions = [] >>>>>> >>>>>> actions.append(datapath.ofproto_parser.OFPActionOutput( >>>>>> datapath.ofproto.OFPP_TABLE) >>>>>> ) >>>>>> >>>>>> out = datapath.ofproto_parser.OFPPacketOut( >>>>>> datapath = datapath, >>>>>> buffer_id = msg.buffer_id, >>>>>> #buffer_id = datapath.ofproto.OFP_NO_BUFFER, >>>>>> in_port = datapath.ofproto.OFPP_CONTROLLER, >>>>>> actions = actions, >>>>>> data = pkt.data >>>>>> ) >>>>>> datapath.send_msg(out) >>>>>> >>>>>> The error shows: >>>>>> File >>>>>> "/usr/local/python2.7.6/lib/python2.7/site-packages/ryu/ofproto/ofproto_v1_3_parser.py", >>>>>> line 2384, in _serialize_body >>>>>> assert self.buffer_id == 0xffffffff >>>>>> >>>>>> It looks like the buffer_id must be NO_BUFFER, but the packet with >>>>>> specify buffer_id is allowed in openflow spec. >>>>>> So how to solve this problem ? Thankyou >>>>>> -- >>>>>> Best Regards, >>>>>> Vinllen >>>>>> >>>>>> >>>>>> ------------------------------------------------------------------------------ >>>>>> >>>>>> _______________________________________________ >>>>>> Ryu-devel mailing list >>>>>> Ryu-devel@lists.sourceforge.net >>>>>> https://lists.sourceforge.net/lists/listinfo/ryu-devel >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> Yi Tseng (a.k.a Takeshi) >>>>> Taiwan National Chiao Tung University >>>>> Department of Computer Science >>>>> W2CNLab >>>>> >>>>> http://blog.takeshi.tw >>>>> >>>> >>>> >>>> >>>> -- >>>> Best Regards, >>>> Vinllen >>>> >>> >>> >>> >>> -- >>> Best Regards, >>> Vinllen >>> >> >> >> >> -- >> Yi Tseng (a.k.a Takeshi) >> Taiwan National Chiao Tung University >> Department of Computer Science >> W2CNLab >> >> http://blog.takeshi.tw >> > > > > -- > Best Regards, > Vinllen > -- Yi Tseng (a.k.a Takeshi) Taiwan National Chiao Tung University Department of Computer Science W2CNLab http://blog.takeshi.tw
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