Hi Kumar,
There is an issue with the signed-offs reported by 0-day Robot. For additional info, please check the link below and look for the tag Co-authored-by: https://github.com/openvswitch/ovs/blob/master/Documentation/internals/contributing/submitting-patches.rst#tags Otherwise the patch looks good time. Thanks, fbl On Mon, Jul 12, 2021 at 11:44:05AM +0530, kumar Amber wrote: > From: Harry van Haaren <harry.van.haa...@intel.com> > > This commit avoids many instances of "using subtable X for miniflow (x,y)" > in the ovs-vswitchd log when using the DPCLS Autovalidator. This occurs > when no specialized subtable is found, and the generic "_any" version of > the avx512 subtable search implementation was used. This change logs the > subtable usage once, avoiding duplicates. > > Signed-off-by: Harry van Haaren <harry.van.haa...@intel.com> > Signed-off-by: kumar Amber <kumar.am...@intel.com> > > --- > v4: > - add doc updtae from Flavio > v3: > - add comments from Flavio > - add documentation update > --- > Documentation/topics/dpdk/bridge.rst | 34 ++++++++++++++++++++++++++ > lib/dpif-netdev-lookup-avx512-gather.c | 4 +-- > 2 files changed, 36 insertions(+), 2 deletions(-) > > diff --git a/Documentation/topics/dpdk/bridge.rst > b/Documentation/topics/dpdk/bridge.rst > index 0f70a0cad..374e03eb0 100644 > --- a/Documentation/topics/dpdk/bridge.rst > +++ b/Documentation/topics/dpdk/bridge.rst > @@ -182,6 +182,40 @@ chosen, and the 2nd occurance of that priority is not > used. Put in logical > terms, a subtable is chosen if its priority is greater than the previous > best candidate. > > +Optimizing Specific Subtable Search > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > + > +During the packet classification, the datapath can use specialized > +lookup tables to optimize the search. However, not all situations > +are optimized. If you see a message like the following one in the OVS > +logs, it means that there is no specialized implementation available > +for the current networking traffic. In this case, OVS will continue > +to process the traffic normally using a more generic lookup table." > + > +"Using non-specialized AVX512 lookup for subtable (4,1) and possibly others." > + > +(Note that the numbers 4 and 1 will likely be different in your logs) > + > +Additional specialized lookups can be added to OVS if the user > +provides that log message along with the command output as show > +below to the OVS mailing list. Note that the numbers in the log > +message ("subtable (X,Y)") need to match with the numbers in > +the provided command output ("dp-extra-info:miniflow_bits(X,Y)"). > + > +"ovs-appctl dpctl/dump-flows -m", which results in output like this: > + > + ufid:82770b5d-ca38-44ff-8283-74ba36bd1ca5, > skb_priority(0/0),skb_mark(0/0) > + ,ct_state(0/0),ct_zone(0/0),ct_mark(0/0),ct_label(0/0),recirc_id(0), > + > dp_hash(0/0),in_port(pcap0),packet_type(ns=0,id=0),eth(src=00:00:00:00:00: > + 00/00:00:00:00:00:00,dst=ff:ff:ff:ff:ff:ff/00:00:00:00:00:00),eth_type( > + > 0x8100),vlan(vid=1,pcp=0),encap(eth_type(0x0800),ipv4(src=127.0.0.1/0.0.0.0 > + ,dst=127.0.0.1/0.0.0.0,proto=17/0,tos=0/0,ttl=64/0,frag=no),udp(src=53/0, > + dst=53/0)), packets:77072681, bytes:3545343326, used:0.000s, dp:ovs, > + actions:vhostuserclient0, dp-extra-info:miniflow_bits(4,1) > + > +Please send an email to the OVS mailing list ovs-dev@openvswitch.org with > +the output of the "dp-extra-info:miniflow_bits(4,1)" values. > + > CPU ISA Testing and Validation > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > diff --git a/lib/dpif-netdev-lookup-avx512-gather.c > b/lib/dpif-netdev-lookup-avx512-gather.c > index bc359dc4a..ced846aa7 100644 > --- a/lib/dpif-netdev-lookup-avx512-gather.c > +++ b/lib/dpif-netdev-lookup-avx512-gather.c > @@ -411,8 +411,8 @@ dpcls_subtable_avx512_gather_probe(uint32_t u0_bits, > uint32_t u1_bits) > */ > if (!f && (u0_bits + u1_bits) < (NUM_U64_IN_ZMM_REG * 2)) { > f = dpcls_avx512_gather_mf_any; > - VLOG_INFO("Using avx512_gather_mf_any for subtable (%d,%d)\n", > - u0_bits, u1_bits); > + VLOG_INFO_ONCE("Using non-specialized AVX512 lookup for subtable" > + " (%d,%d) and possibly others.", u0_bits, u1_bits); > } > > return f; > -- > 2.25.1 > > _______________________________________________ > dev mailing list > d...@openvswitch.org > https://mail.openvswitch.org/mailman/listinfo/ovs-dev -- fbl _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
