On Mon, Aug 08, 2016 at 12:51:06PM +0200, Amrane Ait Zeouay wrote: > Thank you for your answer, but i want to know if i can disable sending the > flow from userspace to datapath so that the datapath send all packets to > the userspace, even it will be slow, because i implemented a new field in > userspace and it's not implemented in datapath. > > Thank you. >
Hi, Take a look at how the multicast snooping code sets the SLOW flag for IGMP and MLD packets at ofproto/ofproto-dpif-xlate.c:xlate_normal. And don't forget to set the wildcard masks as in is_igmp and is_mld. Cascardo. > 2016-08-08 11:48 GMT+02:00 Fischetti, Antonio <antonio.fische...@intel.com>: > > > Hi Amrane, that’s the expected behavior. > > > > The 1st packet of a flow goes up to userspace – and there’s a context > > switch for that. After classification 1 cache entry will be added in the > > megaflow table and another cache entry into the microflow table, both > > these 2 caches are into the kernel. So hopefully future packets - similar > > to the one you received – will be matched against the kernel caches, > > avoiding to be processed in userspace. > > > > > > > > Worth having a look at > > > > https://www.usenix.org/system/files/conference/nsdi15/ > > nsdi15-paper-pfaff.pdf > > > > > > > > The other option you could consider is to use OVS with DPDK where all the > > datapath is at the userspace level. > > > > > > > > HTH > > > > Antonio > > > > > > > > *From:* discuss [mailto:discuss-boun...@openvswitch.org] *On Behalf Of * > > Amrane Ait Zeouay > > *Sent:* Monday, August 8, 2016 9:44 AM > > *To:* discuss@openvswitch.org > > *Subject:* [ovs-discuss] disable datapath > > > > > > > > Hi, > > > > > > > > Is there a way to send packets to userspace and stopping userspace from > > sending flows to datapath, because i want all my packets to be treated in > > userspace, because when i send the first packet it goes to userspace and > > after that it doesn't. so can you help me. > > > > > > > > Thank you and have a nice say, > > > > > > > > best regards > > > > > > > > > > > > > > > > > > > > > > -- > > Amrane Ait Zeouay > > Engineer Student in The Development of Software and Systems > > University of Western Brittany > > Tel: +33 7 62 25 56 03 <+33+7+62+25+56+03> > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
