[ovs-dev] How can i modify Flow table in Openvswitch??
Hi, all i want to modify Flow table in Openvswitch. i know that there are two types of Flow table. (ex. hash-based flow table, wildcard-aware flow table) i want to change the Matching filed in Flow table (ex. existing Matching filed = src ip, dst ip, vlan, etc... changed Matching filed = *index*, src ip, dst ip, vlan, etc... -> i inserted the *index* in there) i saw lib/classifier.c and lib/hash.c should i modify these sources? thank U, all. ___ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
[ovs-dev] How can i measure Hash based flow table performance in openvswitch?
Hi, all I want to measure Hash based flow table performance in Openvswitch. (Not Wildcard and Wildcard+Hash, Only Hash) ex. Two switch has same flow table size. A-switch -> flow table utilization rate = 50% B-switch -> flow table utilization rate = 100% Any, ideas? Thankyou ___ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
[ovs-dev] I have some questions about kernel space
Hi, all How can I look flow table of kernel space? What does flows mean which shows when I type 'ovs-dpctl show'? How can I measure flow table lookup time of kernel space? How can I know flow table max size of kernel space? Thank you. ___ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
[ovs-dev] Where does the flow table size of datapath defined in?
Hi, all Where does the flow table size of datapath defined in? I supposed it is related to MC_HASH_ENTRIES which is defined at 54th line in datapath/flow_table.c. Does the source defined in 271th line represents flow table size? ( table->mask_cache = __alloc_percpu(sizeof(struct mask_cache_entry) * MC_HASH_ENTRIES, __alignof__(struct mask_cache_entry)); ) Moreover if flow table size gets full, what happens? For example, if flow table size is 10 and flow table status is full, the new entry comes... replace? drop? Thank you ___ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
[ovs-dev] Is linear search a searching method for vswitchd flow table?
Hi Is linear search a searching method for vswitchd flow table? I filled the following command to vswitchd flow table. Experiment 1. (in_port1, priority=65000) ovs-ofctl add-flow s1 "table=0 priority=65000 in_port=1 actions=ouitput:2" ovs-ofctl add-flow s1 "table=0 priority=3 in_port=3 actions=drop" ovs-ofctl add-flow s1 "table=0 priority=4 in_port=4 actions=drop" ovs-ofctl add-flow s1 "table=0 priority=5 in_port=5 actions=drop" ... Experiment2. (in_port1, priority=0) ovs-ofctl add-flow s1 "table=0 priority=0 in_port=1 actions=ouitput:2" ovs-ofctl add-flow s1 "table=0 priority=3 in_port=3 actions=drop" ovs-ofctl add-flow s1 "table=0 priority=4 in_port=4 actions=drop" ovs-ofctl add-flow s1 "table=0 priority=5 in_port=5 actions=drop" ... After establishing as above, I sent packet from port=1 to port=2. And measured time of departure and time of arrival to wireshark. However, against my expectation, the time which packet takes to reach was pretty much the same at two experiments. Why does these result comes out? Shouldn't we have to search in regular order of flow table?(In concordance with the priority, ex. 0,1,2,...65000) Thank U ___ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
Re: [ovs-dev] Is linear search a searching method for vswitchd flow table?
Has the tuple space search been used from the early version? In several thesis I read, it says they do linear search. Isn't there any openswitch version that uses linear search? Thank you 2016. 8. 13. 오전 1:49에 "Ben Pfaff" 님이 작성: > On Fri, Aug 12, 2016 at 08:40:12PM +0900, Nam Bong Ha wrote: > > Is linear search a searching method for vswitchd flow table? > > No. Read the NSDI paper: > http://openvswitch.org/support/papers/nsdi2015.pdf > ___ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
