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        "id": 68,
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        "name": "Open Virtual Network development",
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    "msgid": "<20260424132342.3486635-1-amusil@redhat.com>",
    "date": "2026-04-24T13:23:35",
    "name": "[ovs-dev,0/7] This series adds support for Equal-Cost Multi-Path (ECMP) FDB entries",
    "submitter": {
        "id": 83634,
        "url": "http://patchwork.ozlabs.org/api/1.1/people/83634/?format=api",
        "name": "Ales Musil",
        "email": "amusil@redhat.com"
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            "date": "2026-04-24T13:23:35",
            "name": "This series adds support for Equal-Cost Multi-Path (ECMP) FDB entries",
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        "To": "dev@openvswitch.org",
        "Date": "Fri, 24 Apr 2026 15:23:35 +0200",
        "Message-ID": "<20260424132342.3486635-1-amusil@redhat.com>",
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        "X-Mimecast-Originator": "redhat.com",
        "Subject": "[ovs-dev] [PATCH ovn 0/7] This series adds support for Equal-Cost\n Multi-Path (ECMP) FDB entries",
        "X-BeenThere": "ovs-dev@openvswitch.org",
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        "From": "Ales Musil via dev <ovs-dev@openvswitch.org>",
        "Reply-To": "Ales Musil <amusil@redhat.com>",
        "Cc": "dceara@redhat.com",
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    },
    "content": "Currently, each FDB entry resolves to a single VTEP destination.\nWhen the kernel advertises FDB entries with a nexthop group ID\n(NDA_NH_ID) instead of a direct destination, OVN ignores them.\nThis series teaches the controller to parse, track, and program\nmulti-path FDB entries using OpenFlow select groups, enabling\ntraffic distribution across multiple paths with kernel-provided\nweights.\n\nThe first patch fixes a netlink notifier flush issue that is\na prerequisite for reliable nexthop tracking. Patches 2-4 add\nthe plumbing: NDA_NH_ID parsing, a nexthop exchange engine node,\nand ECMP FDB validation. Patch 5 moves the group table out of\nthe engine so physical output can share the ID space with load\nbalancer groups. Patch 6 fixes EVPN datapath data being cleared\nbetween engine runs. Finally, patch 7 generates OpenFlow select\ngroups with per-path buckets and nexthop weights.\n\nAles Musil (7):\n  controller: Flush the netlink notifier message when we disable it.\n  controller: Support FDB entries with nexthop ID defined.\n  controller: Add nexthop exchange node.\n  controller: Accept ECMP FDB entries.\n  controller: Move the group_table out of the engine.\n  controller: Make sure that EVPN datapaths are kept across runs.\n  controller: Generate OpenFlow select groups for ECMP FDB entries.\n\n NEWS                                   |   3 +\n controller/evpn-binding.c              |   4 +-\n controller/evpn-binding.h              |   1 -\n controller/evpn-fdb.c                  | 161 +++++++++++++++++++++++--\n controller/evpn-fdb.h                  |  25 +++-\n controller/neighbor-exchange-netlink.c |  21 +++-\n controller/neighbor-exchange-netlink.h |   1 +\n controller/neighbor-exchange.c         |  31 ++---\n controller/neighbor-exchange.h         |   5 +-\n controller/nexthop-exchange-stub.c     |  20 +++\n controller/nexthop-exchange.c          |  82 ++++++++++---\n controller/nexthop-exchange.h          |   5 +\n controller/ovn-controller.c            | 124 +++++++++++++++++--\n controller/ovn-netlink-notifier.c      |   3 +-\n controller/physical.c                  |  80 ++++++++++--\n controller/physical.h                  |   3 +\n tests/ovn-inc-proc-graph-dump.at       |   3 +\n tests/ovn-macros.at                    |  19 ++-\n tests/system-ovn-netlink.at            | 121 +++++++++++++++----\n tests/system-ovn.at                    | 144 +++++++++++++++++++---\n tests/test-ovn-netlink.c               |  10 +-\n 21 files changed, 743 insertions(+), 123 deletions(-)"
}