Dear Abhiram,

today during the OVN IRC meeting we discussed this issue with vswitchd
frozen on incorrect (?) mirror setup. We believe it is a legit issue
in OVS. We have to understand what triggers it and whether it's safe
to land OVN support before the OVS issue is resolved. (We'll also need
to understand what happens before we can resolve it, obviously.) We'll
probably need a OVS only reproducer that wouldn't involve OVN API. Do
you think you could produce it in the next few days so that OVS folks
can take a look? This should help with getting the patch to the finish
line. Thanks.

BTW Ilya is on PTO and may not respond in a timely manner, so we
should try to deal with it ourselves.

Thanks again for your help.

On Tue, Nov 15, 2022 at 6:09 PM Ihar Hrachyshka <[email protected]> wrote:
>
> On 11/15/22 5:42 PM, Ihar Hrachyshka wrote:
> > I think there's a problem with the bulk tests added in this patch. I
> > will cover this issue in this email, and I'll send my code review
> > tomorrow as promised, since it's getting late here.
> >
> >
> > When running the whole suite locally, I get the following failures:
> >
> >
> > 401: Mirror test bulk swap attachments -- ovn-northd --
> > parallelization=no -- ovn_monitor_all=yes FAILED (ovn.at:16425)
> > 402: Mirror test bulk swap attachments -- ovn-northd --
> > parallelization=no -- ovn_monitor_all=no FAILED (ovn.at:16425)
> > 403: Mirror test bulk attach multiple -- ovn-northd --
> > parallelization=yes -- ovn_monitor_all=yes FAILED (ovn.at:16537)
> > 410: Mirror test bulk more detach and less attach -- ovn-northd --
> > parallelization=no -- ovn_monitor_all=no ok
> > 412: Mirror test bulk attach more than detach -- ovn-northd --
> > parallelization=yes -- ovn_monitor_all=no ok
> > 416: Mirror test bulk detach multiple -- ovn-northd --
> > parallelization=yes -- ovn_monitor_all=no ok
> > 408: Mirror test bulk more detach and less attach -- ovn-northd --
> > parallelization=yes -- ovn_monitor_all=no FAILED (ovn.at:16650)
> > 417: Mirror test bulk detach multiple -- ovn-northd --
> > parallelization=no -- ovn_monitor_all=yes ok
> > 409: Mirror test bulk more detach and less attach -- ovn-northd --
> > parallelization=no -- ovn_monitor_all=yes FAILED (ovn.at:16650)
> > 411: Mirror test bulk attach more than detach -- ovn-northd --
> > parallelization=yes -- ovn_monitor_all=yes FAILED (ovn.at:16766)
> > 418: Mirror test bulk detach multiple -- ovn-northd --
> > parallelization=no -- ovn_monitor_all=no ok
> > 413: Mirror test bulk attach more than detach -- ovn-northd --
> > parallelization=no -- ovn_monitor_all=yes FAILED (ovn.at:16766)
> > 415: Mirror test bulk detach multiple -- ovn-northd --
> > parallelization=yes -- ovn_monitor_all=yes FAILED (ovn.at:16879)
> > 414: Mirror test bulk attach more than detach -- ovn-northd --
> > parallelization=no -- ovn_monitor_all=no FAILED (ovn.at:16766)
> >
> >
> > Note that some of the test case variants passed, and I don't think
> > there's a clear pattern as to which of variants in the test matrix do
> > fail.
> >
> >
> > The error that triggers the failure is during ovs-vswitchd cleanup:
> >
> >
> > ./ovn.at:16425: ovs-appctl --timeout=10 -t ovs-vswitchd exit --cleanup
> > --- /dev/null   2022-11-04 04:09:25.869645998 +0000
> > +++ /home/vagrant/ovn/tests/testsuite.dir/at-groups/401/stderr
> > 2022-11-15 16:31:15.557479369 +0000
> > @@ -0,0 +1,2 @@
> > +2022-11-15T16:31:15Z|00001|fatal_signal|WARN|terminating with signal
> > 14 (Alarm clock)
> > +/home/vagrant/ovn/tests/testsuite.dir/at-groups/401/test-source: line
> > 282: 1033659 Alarm clock             ovs-appctl --timeout=10 -t
> > ovs-vswitchd exit --cleanup
> > ./ovn.at:16425: exit code was 142, expected 0
> >
> >
> > The very last message in ovs-vswitchd log on hv1 is exactly 10 seconds
> > before the alarm clock error:
> >
> >
> > 2022-11-15T16:31:05.280Z|00541|ofproto_dpif_xlate|WARN|over max
> > translation depth 64 on bridge br-int while processing
> > arp,in_port=LOCAL,vlan_tci=0x0000,dl_src=00:00:00:01:02:00,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=192.168.1.11,arp_tpa=192.168.1.12,arp_op=1,arp_sha=00:00:00:01:02:00,arp_tha=00:00:00:00:00:00
> >
> >
> > I don't see coredumps generated for any of test processes, so it's
> > probably not the case of ovs-vswitchd crashing on exit request.
> >
> >
> > I tried to adjust your test cases to a minimal reproducer and I found
> > that if a test case creates two mirrors, both of to-lport type, then
> > ovs-vswitchd freezes (?) - f.e. it no longer responds to appctl
> > requests, nor it handles new ports. But if I merely change the type of
> > one of mirrors in the test to from-lport, the test passes.
> >
> >
> > On the other hand, a consistent way to trigger the failure is adding a
> > 'sleep 3' at the end of a test case just before cleanup, apparently to
> > allow vswitchd to catch on the mirror updates and lock somewhere in
> > the code. I see vswitchd spinning at ~100% cpu in 'top' output when it
> > gets into this state. It's clearly doing SOMETHING, not just sleeping. :)
> >
> >
> > I suspect there's some bug inside vswitchd that makes it lock / spin
> > for a particular setup of mirrors. Whatever OVN sets up in vswitchd
> > database, the latter should not freeze. It would be helpful to provide
> > a short ovs-only reproducer for the situation that would not involve
> > OVN so that our OVS friends can take a look.
> >
> >
> > For the record, the mirrors in ovsdb are:
> >
> >
> > _uuid               : 491d0282-5e03-417c-b8cf-57f72a9a4c81
> > external_ids        : {}
> > name                : mirror0
> > output_port         : 4d0865e8-85a6-42a9-a005-faaecd88fb1c
> > output_vlan         : []
> > select_all          : false
> > select_dst_port     : [0a610fb2-86c2-4e0a-9611-788283b839ab,
> > 7c3e23f4-d42b-457c-89e4-6ccb6e16baaf]
> > select_src_port     : []
> > select_vlan         : []
> > snaplen             : []
> > statistics          : {}
> >
> > _uuid               : ad391ceb-450a-45d2-9b43-665e2515a148
> > external_ids        : {}
> > name                : mirror1
> > output_port         : b1cecc0c-8290-448e-b21a-0b3df8724697
> > output_vlan         : []
> > select_all          : false
> > select_dst_port     : [17958da9-8bea-450e-982b-1842f6a8f6e6,
> > 4cbc1c03-9e14-419e-81c0-9b1dc49fc528]
> > select_src_port     : []
> > select_vlan         : []
> > snaplen             : []
> > statistics          : {}
> >
> >
> > Bridge output here:
> >
> >
> > 8d4b8f3c-41c0-4cf0-a10f-1f0420a93971
> >     Bridge br-int
> >         fail_mode: secure
> >         datapath_type: system
> >         Port vif4
> >             Interface vif4
> >         Port vif2
> >             Interface vif2
> >         Port br-int
> >             Interface br-int
> >                 type: internal
> >         Port vif1
> >             Interface vif1
> >         Port ovn-mirror0
> >             Interface ovn-mirror0
> >                 type: gre
> >                 options: {key="0", remote_ip="192.168.1.12"}
> >         Port vif3
> >             Interface vif3
> >         Port ovn-mirror1
> >             Interface ovn-mirror1
> >                 type: gre
> >                 options: {key="1", remote_ip="192.168.1.12"}
> >         Port patch-br-int-to-ln-public
> >             Interface patch-br-int-to-ln-public
> >                 type: patch
> >                 options: {peer=patch-ln-public-to-br-int}
> >     Bridge br-phys
> >         Port br-phys
> >             Interface br-phys
> >                 type: internal
> >                 options:
> > {rxq_pcap="/home/vagrant/ovn/tests/testsuite.dir/0401/hv1/br-phys-rx.pcap",
> > tx_pcap="/home/vagrant/ovn/tests/testsuite.dir/0401/hv1/br-phys-tx.pcap"}
> >         Port br-phys_n1
> >             Interface br-phys_n1
> >                 options:
> > {rxq_pcap="/home/vagrant/ovn/tests/testsuite.dir/0401/hv1/br-phys_n1-rx.pcap",
> > stream="unix:/home/vagrant/ovn/tests/testsuite.dir/0401/main/hv1_br-phys.sock",
> > tx_pcap="/home/vagrant/ovn/tests/testsuite.dir/0401/hv1/br-phys_n1-tx.pcap"}
> >
> >         Port patch-ln-public-to-br-int
> >             Interface patch-ln-public-to-br-int
> >                 type: patch
> >                 options: {peer=patch-br-int-to-ln-public}
> >
> Perhaps this may be of relevance: when I attach gdb to vswitchd process,
> I can see a never-ending stack of calls in thread 1 that looks like:
>
> #0  0x0000000000406760 in memcpy@plt ()
> #1  0x0000000000499d88 in dp_packet_clone_with_headroom
> (buffer=0x1c0d620, headroom=0) at lib/dp-packet.c:191
> #2  0x000000000049bd4d in dp_packet_batch_clone (dst=0x7fffcbf54740,
> src=0x7fffcbf55230) at lib/dp-packet.h:863
> #3  0x00000000004b15ef in dp_execute_output_action (pmd=0x7f638115f010,
> packets_=0x7fffcbf55230, should_steal=false, port_no=3) at
> lib/dpif-netdev.c:8696
> #4  0x00000000004b19a9 in dp_execute_cb (aux_=0x7fffcbf55200,
> packets_=0x7fffcbf55230, a=0x7fffcbf555c0, should_steal=false) at
> lib/dpif-netdev.c:8787
> #5  0x0000000000507834 in odp_execute_actions (dp=0x7fffcbf55200,
> batch=0x7fffcbf55230, steal=false, actions=0x7fffcbf55578,
> actions_len=88, dp_execute_action=0x4b18e6 <dp_execute_cb>)
>      at lib/odp-execute.c:993
> #6  0x00000000004b251e in dp_netdev_execute_actions (pmd=0x7f638115f010,
> packets=0x7fffcbf55230, should_steal=false, flow=0x7fffcbf55d60,
> actions=0x7fffcbf55578, actions_len=88)
>      at lib/dpif-netdev.c:9105
> #7  0x00000000004a6354 in dpif_netdev_execute (dpif=0x17af630,
> execute=0x7fffcbf55458) at lib/dpif-netdev.c:4557
> #8  0x00000000004a64d0 in dpif_netdev_operate (dpif=0x17af630,
> ops=0x7fffcbf554a8, n_ops=1, offload_type=DPIF_OFFLOAD_AUTO) at
> lib/dpif-netdev.c:4606
> #9  0x00000000004bb9e8 in dpif_operate (dpif=0x17af630,
> ops=0x7fffcbf554a8, n_ops=1, offload_type=DPIF_OFFLOAD_AUTO) at
> lib/dpif.c:1372
> #10 0x00000000004bb8e1 in dpif_execute (dpif=0x17af630,
> execute=0x7fffcbf55500) at lib/dpif.c:1326
> #11 0x000000000043e46d in ofproto_dpif_execute_actions__
> (ofproto=0x17a8a10, version=7, flow=0x7fffcbf55d60, rule=0x0,
> ofpacts=0x7fffcbf56000, ofpacts_len=16, depth=58, resubmits=1924,
>      packet=0x7fffcbf56050) at ofproto/ofproto-dpif.c:4294
> #12 0x0000000000467e8a in compose_table_xlate (ctx=0x7fffcbf5f240,
> out_dev=0x1879430, packet=0x7fffcbf56050) at
> ofproto/ofproto-dpif-xlate.c:3526
> #13 0x0000000000468020 in tnl_send_arp_request (ctx=0x7fffcbf5f240,
> out_dev=0x1879430, eth_src=..., ip_src=184658112, ip_dst=201435328) at
> ofproto/ofproto-dpif-xlate.c:3555
> #14 0x0000000000468710 in native_tunnel_output (ctx=0x7fffcbf5f240,
> xport=0x1839bc0, flow=0x7fffcbf60930, tunnel_odp_port=7, truncate=false,
> is_last_action=false)
>      at ofproto/ofproto-dpif-xlate.c:3721
> #15 0x000000000046a78e in compose_output_action__ (ctx=0x7fffcbf5f240,
> ofp_port=7, xr=0x0, check_stp=true, is_last_action=false,
> truncate=false) at ofproto/ofproto-dpif-xlate.c:4356
> #16 0x000000000046aa38 in compose_output_action (ctx=0x7fffcbf5f240,
> ofp_port=7, xr=0x0, is_last_action=false, truncate=false) at
> ofproto/ofproto-dpif-xlate.c:4416
> #17 0x00000000004653f4 in output_normal (ctx=0x7fffcbf5f240,
> out_xbundle=0x18918d0, xvlan=0x7fffcbf57160) at
> ofproto/ofproto-dpif-xlate.c:2533
> #18 0x0000000000464799 in mirror_packet (ctx=0x7fffcbf5f240,
> xbundle=0x1880d00, mirrors=2) at ofproto/ofproto-dpif-xlate.c:2190
> #19 0x000000000046a96b in compose_output_action__ (ctx=0x7fffcbf5f240,
> ofp_port=1, xr=0x0, check_stp=true, is_last_action=false,
> truncate=false) at ofproto/ofproto-dpif-xlate.c:4396
> #20 0x000000000046aa38 in compose_output_action (ctx=0x7fffcbf5f240,
> ofp_port=1, xr=0x0, is_last_action=false, truncate=false) at
> ofproto/ofproto-dpif-xlate.c:4416
> #21 0x000000000046cf3e in xlate_output_action (ctx=0x7fffcbf5f240,
> port=1, controller_len=0, may_packet_in=true, is_last_action=false,
> truncate=false, group_bucket_action=false)
>      at ofproto/ofproto-dpif-xlate.c:5361
> #22 0x0000000000471069 in do_xlate_actions (ofpacts=0x1860638,
> ofpacts_len=16, ctx=0x7fffcbf5f240, is_last_action=false,
> group_bucket_action=false) at ofproto/ofproto-dpif-xlate.c:7026
> #23 0x000000000046ab3b in xlate_recursively (ctx=0x7fffcbf5f240,
> rule=0x1860480, deepens=false, is_last_action=false,
> actions_xlator=0x470caf <do_xlate_actions>)
>      at ofproto/ofproto-dpif-xlate.c:4439
> #24 0x000000000046b0de in xlate_table_action (ctx=0x7fffcbf5f240,
> in_port=5, table_id=65 'A', may_packet_in=false, honor_table_miss=false,
> with_ct_orig=false, is_last_action=false,
>      xlator=0x470caf <do_xlate_actions>) at
> ofproto/ofproto-dpif-xlate.c:4568
> #25 0x000000000046bbd3 in xlate_ofpact_resubmit (ctx=0x7fffcbf5f240,
> resubmit=0x185cfb8, is_last_action=false) at
> ofproto/ofproto-dpif-xlate.c:4879
> #26 0x0000000000471796 in do_xlate_actions (ofpacts=0x185cfb8,
> ofpacts_len=16, ctx=0x7fffcbf5f240, is_last_action=false,
> group_bucket_action=false) at ofproto/ofproto-dpif-xlate.c:7173
> #27 0x000000000046ab3b in xlate_recursively (ctx=0x7fffcbf5f240,
> rule=0x185ce00, deepens=false, is_last_action=false,
> actions_xlator=0x470caf <do_xlate_actions>)
>      at ofproto/ofproto-dpif-xlate.c:4439
> #28 0x000000000046b0de in xlate_table_action (ctx=0x7fffcbf5f240,
> in_port=5, table_id=64 '@', may_packet_in=false, honor_table_miss=false,
> with_ct_orig=false, is_last_action=false,
>      xlator=0x470caf <do_xlate_actions>) at
> ofproto/ofproto-dpif-xlate.c:4568
> #29 0x000000000046bbd3 in xlate_ofpact_resubmit (ctx=0x7fffcbf5f240,
> resubmit=0x1834458, is_last_action=false) at
> ofproto/ofproto-dpif-xlate.c:4879
> #30 0x0000000000471796 in do_xlate_actions (ofpacts=0x1834458,
> ofpacts_len=16, ctx=0x7fffcbf5f240, is_last_action=false,
> group_bucket_action=false) at ofproto/ofproto-dpif-xlate.c:7173
>
> it goes like that over and over and over for hundreds if not thousands
> of calls down the stack until
>
> #5738 0x000000000046b0de in xlate_table_action (ctx=0x7fffcc09b330,
> in_port=65533, table_id=9 '\t', may_packet_in=false,
> honor_table_miss=false, with_ct_orig=false, is_last_action=true,
> xlator=0x470caf <do_xlate_actions>) at ofproto/ofproto-dpif-xlate.c:4568
> #5739 0x000000000046bbd3 in xlate_ofpact_resubmit (ctx=0x7fffcc09b330,
> resubmit=0x1831ac0, is_last_action=true) at
> ofproto/ofproto-dpif-xlate.c:4879
> #5740 0x0000000000471796 in do_xlate_actions (ofpacts=0x1831a68,
> ofpacts_len=104, ctx=0x7fffcc09b330, is_last_action=true,
> group_bucket_action=false) at ofproto/ofproto-dpif-xlate.c:7173
> #5741 0x000000000046ab3b in xlate_recursively (ctx=0x7fffcc09b330,
> rule=0x18318b0, deepens=false, is_last_action=true,
> actions_xlator=0x470caf <do_xlate_actions>) at
> ofproto/ofproto-dpif-xlate.c:4439
> #5742 0x000000000046b0de in xlate_table_action (ctx=0x7fffcc09b330,
> in_port=65533, table_id=8 '\b', may_packet_in=false,
> honor_table_miss=false, with_ct_orig=false, is_last_action=true,
> xlator=0x470caf <do_xlate_actions>) at ofproto/ofproto-dpif-xlate.c:4568
> #5743 0x000000000046bbd3 in xlate_ofpact_resubmit (ctx=0x7fffcc09b330,
> resubmit=0x187bcc0, is_last_action=true) at
> ofproto/ofproto-dpif-xlate.c:4879
> #5744 0x0000000000471796 in do_xlate_actions (ofpacts=0x187bc80,
> ofpacts_len=80, ctx=0x7fffcc09b330, is_last_action=true,
> group_bucket_action=false) at ofproto/ofproto-dpif-xlate.c:7173
> #5745 0x0000000000473b7a in xlate_actions (xin=0x7fffcc09c5c0,
> xout=0x7fffcc09c910) at ofproto/ofproto-dpif-xlate.c:8033
> #5746 0x000000000043fac3 in packet_xlate (ofproto_=0x17c10e0,
> opo=0x7fffcc09ce00) at ofproto/ofproto-dpif.c:4877
> #5747 0x00000000004250d7 in ofproto_packet_out_start (ofproto=0x17c10e0,
> opo=0x7fffcc09ce00) at ofproto/ofproto.c:3698
> #5748 0x00000000004252bd in handle_packet_out (ofconn=0x17fde40,
> oh=0x17fdfa0) at ofproto/ofproto.c:3764
> #5749 0x000000000042fce2 in handle_single_part_openflow
> (ofconn=0x17fde40, oh=0x17fdfa0, type=OFPTYPE_PACKET_OUT) at
> ofproto/ofproto.c:8664
> #5750 0x0000000000430134 in handle_openflow (ofconn=0x17fde40,
> msgs=0x7fffcc09dc40) at ofproto/ofproto.c:8851
> #5751 0x000000000047a9ae in ofconn_run (ofconn=0x17fde40,
> handle_openflow=0x430072 <handle_openflow>) at ofproto/connmgr.c:1329
> #5752 0x0000000000478584 in connmgr_run (mgr=0x17e2ad0,
> handle_openflow=0x430072 <handle_openflow>) at ofproto/connmgr.c:356
> #5753 0x0000000000420f78 in ofproto_run (p=0x17c10e0) at
> ofproto/ofproto.c:1933
> #5754 0x00000000004101d4 in bridge_run__ () at vswitchd/bridge.c:3210
> #5755 0x00000000004103d3 in bridge_run () at vswitchd/bridge.c:3269
> #5756 0x0000000000415cf0 in main (argc=10, argv=0x7fffcc09dff8) at
> vswitchd/ovs-vswitchd.c:129
>
> The main thread never getting out of some processing code to reach any
> other handlers (e.g. for appctl requests?)
>
> I'm adding Ilya to CC in case he has an idea why vswitchd could lock /
> freeze / spin indefinitely on two to-lport mirror creation.
>
>
> > On 11/8/22 1:11 PM, Ihar Hrachyshka wrote:
> >> On Fri, Nov 4, 2022 at 3:09 PM Abhiram R N <[email protected]> wrote:
> >>> Mirror creation just creates the mirror. The lsp-attach-mirror
> >>> triggers the sequence to create Mirror in OVS DB on compute node.
> >>> OVS already supports Port Mirroring.
> >>>
> >>> Note: This is targeted to mirror to destinations anywhere outside the
> >>> cluster where the analyser resides and it need not be an OVN node.
> >>>
> >>> Example commands are as below:
> >>>
> >>> Mirror creation
> >>> ovn-nbctl mirror-add mirror1 gre 0 from-lport 10.10.10.2
> >>>
> >>> Attach a logical port to the mirror.
> >>> ovn-nbctl lsp-attach-mirror sw0-port1 mirror1
> >>>
> >>> Detach a source from Mirror
> >>> ovn-nbctl lsp-detach-mirror sw0-port1 mirror1
> >>>
> >>> Mirror deletion
> >>> ovn-nbctl mirror-del mirror1
> >>>
> >>> Co-authored-by: Veda Barrenkala <[email protected]>
> >>> Signed-off-by: Veda Barrenkala <[email protected]>
> >>> Signed-off-by: Abhiram R N <[email protected]>
> >>> ---
> >>> v12 --> V13: Made each of bulk test cases(in ovn.at) as separate
> >>>               test to make it pass consistently.
> >>> V11 --> V12: Minor fix in ovn.at to solve intermittent failures
> >>>
> >>> V10 --> V11: Addressed review comments from V10 by Ihar
> >>>             i) Expanded bulk updates test cases in ovn.at
> >>>                Overall below cases are covered
> >>>                a) Attaches multiple mirrors (new)
> >>>                b) Equal detaches and attaches (same as V10)
> >>>                c) Detaches more than attaches (new)
> >>>                d) Attaches more than detaches (new)
> >>>                e) Detaches all (new)
> >>>            ii) Addressed the detach all case in mirror.c
> >>>           iii) Minor correction in NEWS
> >>>            iv) Added invalid mirror attach case in ovn-nbctl.at
> >>>
> >>> Files modified (V10 --> V11):
> >>> Code --> mirror.c
> >>> Test --> ovn.at, ovn-nbctl.at
> >>> Misc --> NEWS
> >>>
> >>> Ihar,
> >>>      Regarding mirror_delete function param delete_all it is wrt the
> >>> port binding and if a port binding is removed we delete all its
> >>> attachment. Already that use case is covered in ovn.at.
> >>> Having said that the detaches all had issue in mirror_delete which
> >>> I have addressed. With all the above cases added now in bulk updates
> >>> hope it should give good assurance.
> >>>
> >>>   NEWS                        |   1 +
> >>>   controller/automake.mk      |   4 +-
> >>>   controller/mirror.c         | 538 +++++++++++++++++++++++++
> >>>   controller/mirror.h         |  53 +++
> >>>   controller/ovn-controller.c | 266 ++++++++++--
> >>>   northd/en-northd.c          |   4 +
> >>>   northd/inc-proc-northd.c    |   4 +
> >>>   northd/northd.c             | 172 ++++++++
> >>>   northd/northd.h             |   2 +
> >>>   ovn-nb.ovsschema            |  31 +-
> >>>   ovn-nb.xml                  |  63 +++
> >>>   ovn-sb.ovsschema            |  26 +-
> >>>   ovn-sb.xml                  |  50 +++
> >>>   tests/ovn-nbctl.at          | 120 ++++++
> >>>   tests/ovn-northd.at         | 102 +++++
> >>>   tests/ovn.at                | 778
> >>> ++++++++++++++++++++++++++++++++++++
> >>>   utilities/ovn-nbctl.c       | 357 +++++++++++++++++
> >>>   utilities/ovn-sbctl.c       |   4 +
> >>>   18 files changed, 2547 insertions(+), 28 deletions(-)
> >>>   create mode 100644 controller/mirror.c
> >>>   create mode 100644 controller/mirror.h
> >>>
> >>> diff --git a/NEWS b/NEWS
> >>> index 224a7b83e..84b22abdb 100644
> >>> --- a/NEWS
> >>> +++ b/NEWS
> >>> @@ -25,6 +25,7 @@ OVN v22.09.0 - 16 Sep 2022
> >>>       any of LR's LRP IP, there is no need to create SNAT entry.
> >>> Now such
> >>>       traffic destined to LRP IP is not dropped.
> >>>     - Bump python version required for building OVN to 3.6.
> >>> +  - Added Support for Remote Port Mirroring.
> >>>
> >>>   OVN v22.06.0 - 03 Jun 2022
> >>>   --------------------------
> >>> diff --git a/controller/automake.mk b/controller/automake.mk
> >>> index c2ab1bbe6..334672b4d 100644
> >>> --- a/controller/automake.mk
> >>> +++ b/controller/automake.mk
> >>> @@ -41,7 +41,9 @@ controller_ovn_controller_SOURCES = \
> >>>          controller/ovsport.h \
> >>>          controller/ovsport.c \
> >>>          controller/vif-plug.h \
> >>> -       controller/vif-plug.c
> >>> +       controller/vif-plug.c \
> >>> +       controller/mirror.h \
> >>> +       controller/mirror.c
> >>>
> >>>   controller_ovn_controller_LDADD = lib/libovn.la
> >>> $(OVS_LIBDIR)/libopenvswitch.la
> >>>   man_MANS += controller/ovn-controller.8
> >>> diff --git a/controller/mirror.c b/controller/mirror.c
> >>> new file mode 100644
> >>> index 000000000..11f2b63a6
> >>> --- /dev/null
> >>> +++ b/controller/mirror.c
> >>> @@ -0,0 +1,538 @@
> >>> +/* Copyright (c) 2022 Red Hat, Inc.
> >>> + *
> >>> + * Licensed under the Apache License, Version 2.0 (the "License");
> >>> + * you may not use this file except in compliance with the License.
> >>> + * You may obtain a copy of the License at:
> >>> + *
> >>> + *     http://www.apache.org/licenses/LICENSE-2.0
> >>> + *
> >>> + * Unless required by applicable law or agreed to in writing, software
> >>> + * distributed under the License is distributed on an "AS IS" BASIS,
> >>> + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
> >>> implied.
> >>> + * See the License for the specific language governing permissions and
> >>> + * limitations under the License.
> >>> + */
> >>> +
> >>> +#include <config.h>
> >>> +#include <unistd.h>
> >>> +
> >>> +/* library headers */
> >>> +#include "lib/sset.h"
> >>> +#include "lib/util.h"
> >>> +
> >>> +/* OVS includes. */
> >>> +#include "lib/vswitch-idl.h"
> >>> +#include "openvswitch/vlog.h"
> >>> +
> >>> +/* OVN includes. */
> >>> +#include "binding.h"
> >>> +#include "lib/ovn-sb-idl.h"
> >>> +#include "mirror.h"
> >>> +
> >>> +VLOG_DEFINE_THIS_MODULE(port_mirror);
> >>> +
> >>> +/* Static function declarations */
> >>> +
> >>> +static const struct ovsrec_port *
> >>> +get_port_for_iface(const struct ovsrec_interface *iface,
> >>> +                  const struct ovsrec_bridge *br_int)
> >>> +{
> >>> +    for (size_t i = 0; i < br_int->n_ports; i++) {
> >>> +        const struct ovsrec_port *p = br_int->ports[i];
> >>> +        for (size_t j = 0; j < p->n_interfaces; j++) {
> >>> +            if (!strcmp(iface->name, p->interfaces[j]->name)) {
> >>> +                return p;
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +    return NULL;
> >>> +}
> >>> +
> >>> +static bool
> >>> +mirror_create(const struct sbrec_port_binding *pb,
> >>> +              struct port_mirror_ctx *pm_ctx)
> >>> +{
> >>> +    const struct ovsrec_mirror *mirror = NULL;
> >>> +
> >>> +    if (pb->n_up && !pb->up[0]) {
> >>> +        return true;
> >>> +    }
> >>> +
> >>> +    if (pb->chassis != pm_ctx->chassis_rec) {
> >>> +        return true;
> >>> +    }
> >>> +
> >>> +    if (!pm_ctx->ovs_idl_txn) {
> >>> +        return false;
> >>> +    }
> >>> +
> >>> +
> >>> +    VLOG_INFO("Mirror rule(s) present for %s ", pb->logical_port);
> >>> +    /* Loop through the mirror rules */
> >>> +    for (size_t i =0; i < pb->n_mirror_rules; i++) {
> >>> +        /* check if the mirror already exists in OVS DB */
> >>> +        bool create_mirror = true;
> >>> +        OVSREC_MIRROR_TABLE_FOR_EACH (mirror, pm_ctx->mirror_table) {
> >>> +            if (!strcmp(pb->mirror_rules[i]->name, mirror->name)) {
> >>> +                /* Mirror with same name already exists
> >>> +                 * No need to create mirror
> >>> +                 */
> >>> +                create_mirror = false;
> >>> +                break;
> >>> +            }
> >>> +        }
> >>> +
> >>> +        if (create_mirror) {
> >>> +
> >>> +            struct smap options = SMAP_INITIALIZER(&options);
> >>> +            char *port_name, *key;
> >>> +
> >>> +            key = xasprintf("%ld",(long int)
> >>> pb->mirror_rules[i]->index);
> >>> +            smap_add(&options, "remote_ip",
> >>> pb->mirror_rules[i]->sink);
> >>> +            smap_add(&options, "key", key);
> >>> +            if (!strcmp(pb->mirror_rules[i]->type, "erspan")) {
> >>> +                /* Set the ERSPAN index */
> >>> +                smap_add(&options, "erspan_idx", key);
> >>> +                smap_add(&options, "erspan_ver","1");
> >>> +
> >>> +            }
> >>> +            struct ovsrec_interface *iface =
> >>> + ovsrec_interface_insert(pm_ctx->ovs_idl_txn);
> >>> +            port_name = xasprintf("ovn-%s",
> >>> + pb->mirror_rules[i]->name);
> >>> +
> >>> +            ovsrec_interface_set_name(iface, port_name);
> >>> +            ovsrec_interface_set_type(iface,
> >>> pb->mirror_rules[i]->type);
> >>> +            ovsrec_interface_set_options(iface, &options);
> >>> +
> >>> +            struct ovsrec_port *port =
> >>> + ovsrec_port_insert(pm_ctx->ovs_idl_txn);
> >>> +            ovsrec_port_set_name(port, port_name);
> >>> +            ovsrec_port_set_interfaces(port, &iface, 1);
> >>> +
> >>> + ovsrec_bridge_update_ports_addvalue(pm_ctx->br_int, port);
> >>> +
> >>> +            smap_destroy(&options);
> >>> +            free(port_name);
> >>> +            free(key);
> >>> +
> >>> +            VLOG_INFO("Creating Mirror in OVS DB");
> >>> +            mirror = ovsrec_mirror_insert(pm_ctx->ovs_idl_txn);
> >>> + ovsrec_mirror_set_name(mirror,pb->mirror_rules[i]->name);
> >>> +            ovsrec_mirror_update_output_port_addvalue(mirror, port);
> >>> + ovsrec_bridge_update_mirrors_addvalue(pm_ctx->br_int,
> >>> + mirror);
> >>> +        }
> >>> +
> >>> +        struct local_binding *lbinding = local_binding_find(
> >>> +                               pm_ctx->local_bindings,
> >>> pb->logical_port);
> >>> +        const struct ovsrec_port *p =
> >>> +                     get_port_for_iface(lbinding->iface,
> >>> pm_ctx->br_int);
> >>> +        if (p) {
> >>> +            if (!strcmp(pb->mirror_rules[i]->filter,"from-lport")) {
> >>> + ovsrec_mirror_update_select_src_port_addvalue(mirror, p);
> >>> +            } else if
> >>> (!strcmp(pb->mirror_rules[i]->filter,"to-lport")) {
> >>> + ovsrec_mirror_update_select_dst_port_addvalue(mirror, p);
> >>> +            } else {
> >>> + ovsrec_mirror_update_select_src_port_addvalue(mirror, p);
> >>> + ovsrec_mirror_update_select_dst_port_addvalue(mirror, p);
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +    return true;
> >>> +}
> >>> +
> >>> +static void
> >>> +check_and_update_mirror_table(const struct sbrec_mirror *sb_mirror,
> >>> +                              struct ovsrec_mirror *ovs_mirror)
> >>> +{
> >>> +    char *filter;
> >>> +    if ((ovs_mirror->n_select_dst_port)
> >>> +            && (ovs_mirror->n_select_src_port)) {
> >>> +        filter = "both";
> >>> +    } else if (ovs_mirror->n_select_dst_port) {
> >>> +        filter = "to-lport";
> >>> +    } else {
> >>> +        filter = "from-lport";
> >>> +    }
> >>> +
> >>> +    if (strcmp(sb_mirror->filter, filter)) {
> >>> +        if (!strcmp(sb_mirror->filter,"from-lport")
> >>> +                              && !strcmp(filter,"both")) {
> >>> +            for (size_t i = 0; i < ovs_mirror->n_select_dst_port;
> >>> i++) {
> >>> + ovsrec_mirror_update_select_dst_port_delvalue(ovs_mirror,
> >>> + ovs_mirror->select_dst_port[i]);
> >>> +            }
> >>> +        } else if (!strcmp(sb_mirror->filter,"to-lport")
> >>> +                              && !strcmp(filter,"both")) {
> >>> +            for (size_t i = 0; i < ovs_mirror->n_select_src_port;
> >>> i++) {
> >>> + ovsrec_mirror_update_select_src_port_delvalue(ovs_mirror,
> >>> + ovs_mirror->select_src_port[i]);
> >>> +            }
> >>> +        } else if (!strcmp(sb_mirror->filter,"both")
> >>> +                              && !strcmp(filter,"from-lport")) {
> >>> +            for (size_t i = 0; i < ovs_mirror->n_select_src_port;
> >>> i++) {
> >>> + ovsrec_mirror_update_select_dst_port_addvalue(ovs_mirror,
> >>> + ovs_mirror->select_src_port[i]);
> >>> +            }
> >>> +        } else if (!strcmp(sb_mirror->filter,"both")
> >>> +                              && !strcmp(filter,"to-lport")) {
> >>> +            for (size_t i = 0; i < ovs_mirror->n_select_dst_port;
> >>> i++) {
> >>> + ovsrec_mirror_update_select_src_port_addvalue(ovs_mirror,
> >>> + ovs_mirror->select_dst_port[i]);
> >>> +            }
> >>> +        } else if (!strcmp(sb_mirror->filter,"to-lport")
> >>> +                              && !strcmp(filter,"from-lport")) {
> >>> +            for (size_t i = 0; i < ovs_mirror->n_select_src_port;
> >>> i++) {
> >>> + ovsrec_mirror_update_select_dst_port_addvalue(ovs_mirror,
> >>> + ovs_mirror->select_src_port[i]);
> >>> + ovsrec_mirror_update_select_src_port_delvalue(ovs_mirror,
> >>> + ovs_mirror->select_src_port[i]);
> >>> +            }
> >>> +        } else if (!strcmp(sb_mirror->filter,"from-lport")
> >>> +                              && !strcmp(filter,"to-lport")) {
> >>> +            for (size_t i = 0; i < ovs_mirror->n_select_dst_port;
> >>> i++) {
> >>> + ovsrec_mirror_update_select_src_port_addvalue(ovs_mirror,
> >>> + ovs_mirror->select_dst_port[i]);
> >>> + ovsrec_mirror_update_select_dst_port_delvalue(ovs_mirror,
> >>> + ovs_mirror->select_dst_port[i]);
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +}
> >>> +
> >>> +static void
> >>> +check_and_update_interface_table(const struct sbrec_mirror *sb_mirror,
> >>> +                                   struct ovsrec_mirror *ovs_mirror)
> >>> +{
> >>> +    struct smap options = SMAP_INITIALIZER(&options);
> >>> +    char *key, *type;
> >>> +    struct ovsrec_interface *iface =
> >>> + ovs_mirror->output_port->interfaces[0];
> >>> +    struct smap *opts = &iface->options;
> >>> +
> >>> +    const char *erspan_ver = smap_get(opts, "erspan_ver");
> >>> +    if (erspan_ver) {
> >>> +        type = "erspan";
> >>> +    } else {
> >>> +        type = "gre";
> >>> +    }
> >>> +    if (strcmp(type, sb_mirror->type)) {
> >>> +        ovsrec_interface_set_type(iface, sb_mirror->type);
> >>> +    }
> >>> +
> >>> +    key = xasprintf("%ld",(long int) sb_mirror->index);
> >>> +    smap_add(&options, "remote_ip", sb_mirror->sink);
> >>> +    smap_add(&options, "key", key);
> >>> +
> >>> +    if (!strcmp(sb_mirror->type, "erspan")) {
> >>> +        /* Set the ERSPAN index */
> >>> +        smap_add(&options, "erspan_idx", key);
> >>> +        smap_add(&options, "erspan_ver","1");
> >>> +    }
> >>> +
> >>> +    ovsrec_interface_set_options(iface, &options);
> >>> +    smap_destroy(&options);
> >>> +    free(key);
> >>> +
> >>> +}
> >>> +
> >>> +static void
> >>> +mirror_update(const struct sbrec_mirror *sb_mirror,
> >>> +              struct ovsrec_mirror *ovs_mirror)
> >>> +{
> >>> +    check_and_update_interface_table(sb_mirror, ovs_mirror);
> >>> +
> >>> +    check_and_update_mirror_table(sb_mirror, ovs_mirror);
> >>> +}
> >>> +
> >>> +static bool
> >>> +mirror_delete(const struct sbrec_port_binding *pb,
> >>> +              struct port_mirror_ctx *pm_ctx,
> >>> +              struct shash *pb_mirror_map,
> >>> +              bool delete_all)
> >>> +{
> >>> +
> >>> +    if (!pm_ctx->ovs_idl_txn) {
> >>> +        return false;
> >>> +    }
> >>> +
> >>> +    struct sset pb_mirrors = SSET_INITIALIZER(&pb_mirrors);
> >>> +
> >>> +    if (!delete_all) {
> >>> +        for (size_t i = 0; i < pb->n_mirror_rules ; i++) {
> >>> +            sset_add(&pb_mirrors, pb->mirror_rules[i]->name);
> >>> +        }
> >>> +    }
> >>> +
> >>> +    if (delete_all && (shash_is_empty(pb_mirror_map)) &&
> >>> pb->n_mirror_rules) {
> >>> +        for (size_t i = 0; i < pb->n_mirror_rules ; i++) {
> >>> +
> >>> +            struct ovsrec_mirror *ovs_mirror = NULL;
> >>> +            ovs_mirror = shash_find_data(pm_ctx->ovs_mirrors,
> >>> + pb->mirror_rules[i]->name);
> >>> +            if (ovs_mirror) {
> >>> + ovsrec_bridge_update_ports_delvalue(pm_ctx->br_int,
> >>> + ovs_mirror->output_port);
> >>> + ovsrec_bridge_update_mirrors_delvalue(pm_ctx->br_int,
> >>> + ovs_mirror);
> >>> + ovsrec_port_delete(ovs_mirror->output_port);
> >>> +                ovsrec_mirror_delete(ovs_mirror);
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +
> >>> +    struct shash_node *mirror_node;
> >>> +    const struct sbrec_port_binding *sb_pb;
> >>> +    int attach_cnt = 0;
> >>> +    SHASH_FOR_EACH (mirror_node, pb_mirror_map) {
> >>> +        struct ovsrec_mirror *ovs_mirror = mirror_node->data;
> >>> +        if (!sset_find(&pb_mirrors, ovs_mirror->name)) {
> >>> +            /* Find if the mirror has other sources */
> >>> +            attach_cnt = 0;
> >>> +            SBREC_PORT_BINDING_TABLE_FOR_EACH_TRACKED (sb_pb,
> >>> + pm_ctx->port_binding_table) {
> >>> +                for (size_t i = 0; i < sb_pb->n_mirror_rules; i++) {
> >>> +                    if (!strcmp(sb_pb->mirror_rules[i]->name,
> >>> + ovs_mirror->name)) {
> >>> +                        attach_cnt++;
> >>> +                    }
> >>> +                }
> >>> +            }
> >>> +            if (attach_cnt) {
> >>> +                /* More than 1 source then just
> >>> +                 * update the mirror table
> >>> +                 */
> >>> +                bool done = false;
> >>> +                for (size_t i = 0; ((i <
> >>> ovs_mirror->n_select_dst_port)
> >>> +                                                   && (done ==
> >>> false)); i++) {
> >>> +                    const struct ovsrec_port *port_rec =
> >>> + ovs_mirror->select_dst_port[i];
> >>> +                    for (size_t j = 0; j < port_rec->n_interfaces;
> >>> j++) {
> >>> +                        const struct ovsrec_interface *iface_rec;
> >>> +
> >>> +                        iface_rec = port_rec->interfaces[j];
> >>> +                        const char *iface_id =
> >>> + smap_get(&iface_rec->external_ids,
> >>> + "iface-id");
> >>> +                        if (!strcmp(iface_id,pb->logical_port)) {
> >>> + ovsrec_mirror_update_select_dst_port_delvalue(
> >>> + ovs_mirror, port_rec);
> >>> +                            done = true;
> >>> +                            break;
> >>> +                        }
> >>> +                    }
> >>> +                }
> >>> +                done = false;
> >>> +                for (size_t i = 0; ((i <
> >>> ovs_mirror->n_select_src_port)
> >>> +                                                   && (done ==
> >>> false)); i++) {
> >>> +                    const struct ovsrec_port *port_rec =
> >>> + ovs_mirror->select_src_port[i];
> >>> +                    for (size_t j = 0; j < port_rec->n_interfaces;
> >>> j++) {
> >>> +                        const struct ovsrec_interface *iface_rec;
> >>> +
> >>> +                        iface_rec = port_rec->interfaces[j];
> >>> +                        const char *iface_id =
> >>> + smap_get(&iface_rec->external_ids,
> >>> + "iface-id");
> >>> +                        if (!strcmp(iface_id,pb->logical_port)) {
> >>> + ovsrec_mirror_update_select_src_port_delvalue(
> >>> + ovs_mirror, port_rec);
> >>> +                            done = true;
> >>> +                            break;
> >>> +                        }
> >>> +                    }
> >>> +                }
> >>> +            } else {
> >>> +                /*
> >>> +                 * If only 1 source delete the output port
> >>> +                 * and then delete the mirror completely
> >>> +                 */
> >>> +                VLOG_INFO("Only 1 source for the mirror. Hence
> >>> delete it");
> >>> + ovsrec_bridge_update_ports_delvalue(pm_ctx->br_int,
> >>> + ovs_mirror->output_port);
> >>> + ovsrec_bridge_update_mirrors_delvalue(pm_ctx->br_int,
> >>> + ovs_mirror);
> >>> + ovsrec_port_delete(ovs_mirror->output_port);
> >>> +                ovsrec_mirror_delete(ovs_mirror);
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +
> >>> +    const char *used_node, *used_next;
> >>> +    SSET_FOR_EACH_SAFE (used_node, used_next, &pb_mirrors) {
> >>> +        sset_delete(&pb_mirrors, SSET_NODE_FROM_NAME(used_node));
> >>> +    }
> >>> +    sset_destroy(&pb_mirrors);
> >>> +
> >>> +    return true;
> >>> +}
> >>> +
> >>> +static void
> >>> +find_port_specific_mirrors (const struct sbrec_port_binding *pb,
> >>> +                            struct port_mirror_ctx *pm_ctx,
> >>> +                            struct shash *pb_mirror_map)
> >>> +{
> >>> +    const struct ovsrec_mirror *mirror = NULL;
> >>> +
> >>> +    OVSREC_MIRROR_TABLE_FOR_EACH (mirror, pm_ctx->mirror_table) {
> >>> +        for (size_t i = 0; i < mirror->n_select_dst_port; i++) {
> >>> +            const struct ovsrec_port *port_rec =
> >>> mirror->select_dst_port[i];
> >>> +            for (size_t j = 0; j < port_rec->n_interfaces; j++) {
> >>> +                const struct ovsrec_interface *iface_rec;
> >>> +                iface_rec = port_rec->interfaces[j];
> >>> +                const char *logical_port =
> >>> +                    smap_get(&iface_rec->external_ids, "iface-id");
> >>> +                if (!strcmp(logical_port, pb->logical_port)) {
> >>> +                    shash_add_once(pb_mirror_map, mirror->name,
> >>> mirror);
> >>> +                }
> >>> +            }
> >>> +        }
> >>> +        for (size_t i = 0; i < mirror->n_select_src_port; i++) {
> >>> +            const struct ovsrec_port *port_rec =
> >>> mirror->select_src_port[i];
> >>> +            for (size_t j = 0; j < port_rec->n_interfaces; j++) {
> >>> +                const struct ovsrec_interface *iface_rec;
> >>> +                iface_rec = port_rec->interfaces[j];
> >>> +                const char *logical_port =
> >>> +                    smap_get(&iface_rec->external_ids, "iface-id");
> >>> +                if (!strcmp(logical_port, pb->logical_port)) {
> >>> +                    shash_add_once(pb_mirror_map, mirror->name,
> >>> mirror);
> >>> +                }
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +}
> >>> +
> >>> +void
> >>> +mirror_register_ovs_idl(struct ovsdb_idl *ovs_idl)
> >>> +{
> >>> +    ovsdb_idl_add_column(ovs_idl, &ovsrec_bridge_col_mirrors);
> >>> +
> >>> +    ovsdb_idl_add_table(ovs_idl, &ovsrec_table_mirror);
> >>> +    ovsdb_idl_add_column(ovs_idl, &ovsrec_mirror_col_name);
> >>> +    ovsdb_idl_add_column(ovs_idl, &ovsrec_mirror_col_output_port);
> >>> +    ovsdb_idl_add_column(ovs_idl, &ovsrec_mirror_col_select_dst_port);
> >>> +    ovsdb_idl_add_column(ovs_idl, &ovsrec_mirror_col_select_src_port);
> >>> +}
> >>> +
> >>> +
> >>> +void
> >>> +ovn_port_mirror_init(struct shash *ovs_mirrors)
> >>> +{
> >>> +    shash_init(ovs_mirrors);
> >>> +}
> >>> +
> >>> +void
> >>> +ovn_port_mirror_run(struct port_mirror_ctx *pm_ctx)
> >>> +{
> >>> +    const struct sbrec_port_binding *pb;
> >>> +    SBREC_PORT_BINDING_TABLE_FOR_EACH (pb,
> >>> + pm_ctx->port_binding_table) {
> >>> +        ovn_port_mirror_handle_lport(pb, false, pm_ctx);
> >>> +    }
> >>> +}
> >>> +
> >>> +bool
> >>> +ovn_port_mirror_handle_lport(const struct sbrec_port_binding *pb,
> >>> bool removed,
> >>> +                     struct port_mirror_ctx *pm_ctx)
> >>> +{
> >>> +    bool ret = true;
> >>> +    struct local_binding *lbinding = local_binding_find(
> >>> +                               pm_ctx->local_bindings,
> >>> pb->logical_port);
> >>> +
> >>> +    if (strcmp(pb->type, "") && (!lbinding)) {
> >>> +        return ret;
> >>> +    }
> >>> +
> >>> +    struct shash port_ovs_mirrors =
> >>> SHASH_INITIALIZER(&port_ovs_mirrors);
> >>> +
> >>> +    /* Need to find if mirror needs update */
> >>> +    find_port_specific_mirrors(pb, pm_ctx, &port_ovs_mirrors);
> >>> +    if (!removed) {
> >>> +        if ((pb->n_mirror_rules == 0)
> >>> +              && (shash_is_empty(&port_ovs_mirrors))) {
> >>> +            /* No mirror update */
> >>> +        } else if (pb->n_mirror_rules ==
> >>> shash_count(&port_ovs_mirrors)) {
> >>> +            /* Though number of mirror rules are same,
> >>> +             * need to verify the contents
> >>> +             */
> >>> +            for (size_t i = 0; i < pb->n_mirror_rules; i++) {
> >>> +                if (!shash_find(&port_ovs_mirrors,
> >>> + pb->mirror_rules[i]->name)) {
> >>> +                    /* Mis match in OVN SB DB and OVS DB
> >>> +                     * Delete and Create mirror(s) with proper sources
> >>> +                     */
> >>> +                    ret = mirror_delete(pb, pm_ctx,
> >>> + &port_ovs_mirrors, false);
> >>> +                    if (ret) {
> >>> +                        ret = mirror_create(pb, pm_ctx);
> >>> +                    }
> >>> +                    break;
> >>> +                }
> >>> +            }
> >>> +        } else {
> >>> +            /* Update Mirror */
> >>> +            if (pb->n_mirror_rules > shash_count(&port_ovs_mirrors)) {
> >>> +                /* create mirror,
> >>> +                 * if mirror already exists only update selection
> >>> +                 */
> >>> +                ret = mirror_create(pb, pm_ctx);
> >>> +            } else {
> >>> +                /* delete mirror,
> >>> +                 * if mirror has other sources only update selection
> >>> +                 */
> >>> +                ret = mirror_delete(pb, pm_ctx, &port_ovs_mirrors,
> >>> false);
> >>> +            }
> >>> +        }
> >>> +    } else {
> >>> +        ret = mirror_delete(pb, pm_ctx, &port_ovs_mirrors, true);
> >>> +    }
> >>> +
> >>> +    struct shash_node *ovs_mirror_node, *ovs_mirror_next;
> >>> +    SHASH_FOR_EACH_SAFE (ovs_mirror_node, ovs_mirror_next,
> >>> + &port_ovs_mirrors) {
> >>> +        shash_delete(&port_ovs_mirrors, ovs_mirror_node);
> >>> +    }
> >>> +    shash_destroy(&port_ovs_mirrors);
> >>> +
> >>> +    return ret;
> >>> +}
> >>> +
> >>> +bool
> >>> +ovn_port_mirror_handle_update(struct port_mirror_ctx *pm_ctx)
> >>> +{
> >>> +    const struct sbrec_mirror *mirror = NULL;
> >>> +    struct ovsrec_mirror *ovs_mirror = NULL;
> >>> +
> >>> +    SBREC_MIRROR_TABLE_FOR_EACH_TRACKED (mirror,
> >>> pm_ctx->sb_mirror_table) {
> >>> +    /* For each tracked mirror entry check if OVS entry is there*/
> >>> +        ovs_mirror = shash_find_data(pm_ctx->ovs_mirrors,
> >>> mirror->name);
> >>> +        if (ovs_mirror) {
> >>> +            if (sbrec_mirror_is_deleted(mirror)) {
> >>> +                /* Need to delete the mirror in OVS */
> >>> +                VLOG_INFO("Delete mirror and remove port");
> >>> + ovsrec_bridge_update_ports_delvalue(pm_ctx->br_int,
> >>> + ovs_mirror->output_port);
> >>> + ovsrec_bridge_update_mirrors_delvalue(pm_ctx->br_int,
> >>> + ovs_mirror);
> >>> + ovsrec_port_delete(ovs_mirror->output_port);
> >>> +                ovsrec_mirror_delete(ovs_mirror);
> >>> +            } else {
> >>> +                mirror_update(mirror, ovs_mirror);
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +
> >>> +    return true;
> >>> +}
> >>> +
> >>> +void
> >>> +ovn_port_mirror_destroy(struct shash *ovs_mirrors)
> >>> +{
> >>> +    struct shash_node *ovs_mirror_node, *ovs_mirror_next;
> >>> +    SHASH_FOR_EACH_SAFE (ovs_mirror_node, ovs_mirror_next,
> >>> +                                              ovs_mirrors) {
> >>> +        shash_delete(ovs_mirrors, ovs_mirror_node);
> >>> +    }
> >>> +    shash_destroy(ovs_mirrors);
> >>> +}
> >>> diff --git a/controller/mirror.h b/controller/mirror.h
> >>> new file mode 100644
> >>> index 000000000..85b964f55
> >>> --- /dev/null
> >>> +++ b/controller/mirror.h
> >>> @@ -0,0 +1,53 @@
> >>> +/* Copyright (c) 2022 Red Hat, Inc.
> >>> + *
> >>> + * Licensed under the Apache License, Version 2.0 (the "License");
> >>> + * you may not use this file except in compliance with the License.
> >>> + * You may obtain a copy of the License at:
> >>> + *
> >>> + *     http://www.apache.org/licenses/LICENSE-2.0
> >>> + *
> >>> + * Unless required by applicable law or agreed to in writing, software
> >>> + * distributed under the License is distributed on an "AS IS" BASIS,
> >>> + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
> >>> implied.
> >>> + * See the License for the specific language governing permissions and
> >>> + * limitations under the License.
> >>> + */
> >>> +
> >>> +#ifndef OVN_MIRROR_H
> >>> +#define OVN_MIRROR_H 1
> >>> +
> >>> +struct ovsdb_idl_txn;
> >>> +struct ovsrec_port_table;
> >>> +struct ovsrec_bridge;
> >>> +struct ovsrec_bridge_table;
> >>> +struct ovsrec_open_vswitch_table;
> >>> +struct sbrec_chassis;
> >>> +struct ovsrec_interface_table;
> >>> +struct ovsrec_mirror_table;
> >>> +struct sbrec_mirror_table;
> >>> +struct sbrec_port_binding_table;
> >>> +
> >>> +struct port_mirror_ctx {
> >>> +    struct shash *ovs_mirrors;
> >>> +    struct ovsdb_idl_txn *ovs_idl_txn;
> >>> +    const struct ovsrec_port_table *port_table;
> >>> +    const struct ovsrec_bridge *br_int;
> >>> +    const struct sbrec_chassis *chassis_rec;
> >>> +    const struct ovsrec_bridge_table *bridge_table;
> >>> +    const struct ovsrec_open_vswitch_table *ovs_table;
> >>> +    const struct ovsrec_interface_table *iface_table;
> >>> +    const struct ovsrec_mirror_table *mirror_table;
> >>> +    const struct sbrec_mirror_table *sb_mirror_table;
> >>> +    const struct sbrec_port_binding_table *port_binding_table;
> >>> +    struct shash *local_bindings;
> >>> +};
> >>> +
> >>> +void mirror_register_ovs_idl(struct ovsdb_idl *);
> >>> +void ovn_port_mirror_init(struct shash *);
> >>> +void ovn_port_mirror_destroy(struct shash *);
> >>> +void ovn_port_mirror_run(struct port_mirror_ctx *pm_ctx);
> >>> +bool ovn_port_mirror_handle_lport(const struct sbrec_port_binding *pb,
> >>> +                                  bool removed,
> >>> +                                  struct port_mirror_ctx *pm_ctx);
> >>> +bool ovn_port_mirror_handle_update(struct port_mirror_ctx *pm_ctx);
> >>> +#endif
> >>> diff --git a/controller/ovn-controller.c b/controller/ovn-controller.c
> >>> index 8895c7a2b..15ab17c4a 100644
> >>> --- a/controller/ovn-controller.c
> >>> +++ b/controller/ovn-controller.c
> >>> @@ -78,6 +78,7 @@
> >>>   #include "lib/inc-proc-eng.h"
> >>>   #include "lib/ovn-l7.h"
> >>>   #include "hmapx.h"
> >>> +#include "mirror.h"
> >>>
> >>>   VLOG_DEFINE_THIS_MODULE(main);
> >>>
> >>> @@ -966,6 +967,7 @@ ctrl_register_ovs_idl(struct ovsdb_idl *ovs_idl)
> >>>       ovsdb_idl_track_add_column(ovs_idl, &ovsrec_port_col_name);
> >>>       ovsdb_idl_track_add_column(ovs_idl, &ovsrec_port_col_interfaces);
> >>>       ovsdb_idl_track_add_column(ovs_idl,
> >>> &ovsrec_port_col_external_ids);
> >>> +    mirror_register_ovs_idl(ovs_idl);
> >>>   }
> >>>
> >>>   #define SB_NODES \
> >>> @@ -986,6 +988,7 @@ ctrl_register_ovs_idl(struct ovsdb_idl *ovs_idl)
> >>>       SB_NODE(load_balancer, "load_balancer") \
> >>>       SB_NODE(fdb, "fdb") \
> >>>       SB_NODE(meter, "meter") \
> >>> +    SB_NODE(mirror, "mirror") \
> >>>       SB_NODE(static_mac_binding, "static_mac_binding")
> >>>
> >>>   enum sb_engine_node {
> >>> @@ -1003,7 +1006,8 @@ enum sb_engine_node {
> >>>       OVS_NODE(bridge, "bridge") \
> >>>       OVS_NODE(port, "port") \
> >>>       OVS_NODE(interface, "interface") \
> >>> -    OVS_NODE(qos, "qos")
> >>> +    OVS_NODE(qos, "qos") \
> >>> +    OVS_NODE(mirror, "mirror")
> >>>
> >>>   enum ovs_engine_node {
> >>>   #define OVS_NODE(NAME, NAME_STR) OVS_##NAME,
> >>> @@ -2383,6 +2387,203 @@ load_balancers_by_dp_cleanup(struct hmap *lbs)
> >>>       free(lbs);
> >>>   }
> >>>
> >>> +/* Mirror Engine */
> >>> +struct ed_type_port_mirror {
> >>> +    struct shash ovs_mirrors;
> >>> +};
> >>> +
> >>> +static void *
> >>> +en_port_mirror_init(struct engine_node *node OVS_UNUSED,
> >>> +                    struct engine_arg *arg OVS_UNUSED)
> >>> +{
> >>> +    struct ed_type_port_mirror *port_mirror = xzalloc(sizeof
> >>> *port_mirror);
> >>> +    ovn_port_mirror_init(&port_mirror->ovs_mirrors);
> >>> +    return port_mirror;
> >>> +}
> >>> +
> >>> +static void
> >>> +en_port_mirror_cleanup(void *data)
> >>> +{
> >>> +    struct ed_type_port_mirror *port_mirror = data;
> >>> + ovn_port_mirror_destroy(&port_mirror->ovs_mirrors);
> >>> +}
> >>> +
> >>> +static void
> >>> +init_port_mirror_ctx(struct engine_node *node,
> >>> +                 struct ed_type_runtime_data *rt_data,
> >>> +                 struct ed_type_port_mirror *port_mirror_data,
> >>> +                 struct port_mirror_ctx *pm_ctx)
> >>> +{
> >>> +    struct ovsrec_open_vswitch_table *ovs_table =
> >>> +        (struct ovsrec_open_vswitch_table *) EN_OVSDB_GET(
> >>> +            engine_get_input("OVS_open_vswitch", node));
> >>> +    struct ovsrec_bridge_table *bridge_table =
> >>> +        (struct ovsrec_bridge_table *) EN_OVSDB_GET(
> >>> +            engine_get_input("OVS_bridge", node));
> >>> +    const char *chassis_id = get_ovs_chassis_id(ovs_table);
> >>> +    const struct ovsrec_bridge *br_int = get_br_int(bridge_table,
> >>> ovs_table);
> >>> +
> >>> +    ovs_assert(br_int && chassis_id);
> >>> +    const struct sbrec_chassis *chassis = NULL;
> >>> +    struct ovsdb_idl_index *sbrec_chassis_by_name =
> >>> +        engine_ovsdb_node_get_index(
> >>> +                engine_get_input("SB_chassis", node),
> >>> +                "name");
> >>> +
> >>> +    if (chassis_id) {
> >>> +        chassis = chassis_lookup_by_name(sbrec_chassis_by_name,
> >>> chassis_id);
> >>> +    }
> >>> +    ovs_assert(chassis);
> >>> +
> >>> +    struct ovsrec_port_table *port_table =
> >>> +        (struct ovsrec_port_table *) EN_OVSDB_GET(
> >>> +            engine_get_input("OVS_port", node));
> >>> +
> >>> +    struct ed_type_ovs_interface_shadow *iface_shadow =
> >>> +        engine_get_input_data("ovs_interface_shadow", node);
> >>> +
> >>> +    struct ovsrec_mirror_table *mirror_table =
> >>> +        (struct ovsrec_mirror_table *) EN_OVSDB_GET(
> >>> +            engine_get_input("OVS_mirror", node));
> >>> +
> >>> +    struct sbrec_port_binding_table *pb_table =
> >>> +        (struct sbrec_port_binding_table *) EN_OVSDB_GET(
> >>> +            engine_get_input("SB_port_binding", node));
> >>> +
> >>> +    struct sbrec_mirror_table *sb_mirror_table =
> >>> +        (struct sbrec_mirror_table *) EN_OVSDB_GET(
> >>> +            engine_get_input("SB_mirror", node));
> >>> +
> >>> +    struct shash_node *ovs_mirror_node, *ovs_mirror_next;
> >>> +    SHASH_FOR_EACH_SAFE (ovs_mirror_node, ovs_mirror_next,
> >>> + &port_mirror_data->ovs_mirrors) {
> >>> +        shash_delete(&port_mirror_data->ovs_mirrors, ovs_mirror_node);
> >>> +    }
> >>> +
> >>> +    const struct ovsrec_mirror *ovsmirror = NULL;
> >>> +    OVSREC_MIRROR_TABLE_FOR_EACH (ovsmirror, mirror_table) {
> >>> +       shash_add(&port_mirror_data->ovs_mirrors, ovsmirror->name,
> >>> ovsmirror);
> >>> +    }
> >>> +
> >>> +    pm_ctx->ovs_idl_txn = engine_get_context()->ovs_idl_txn;
> >>> +    pm_ctx->port_table = port_table;
> >>> +    pm_ctx->iface_table = iface_shadow->iface_table;
> >>> +    pm_ctx->mirror_table = mirror_table;
> >>> +    pm_ctx->port_binding_table = pb_table;
> >>> +    pm_ctx->sb_mirror_table = sb_mirror_table;
> >>> +    pm_ctx->br_int = br_int;
> >>> +    pm_ctx->chassis_rec = chassis;
> >>> +    pm_ctx->bridge_table = bridge_table;
> >>> +    pm_ctx->ovs_table = ovs_table;
> >>> +    pm_ctx->ovs_mirrors = &port_mirror_data->ovs_mirrors;
> >>> +    pm_ctx->local_bindings = &rt_data->lbinding_data.bindings;
> >>> +}
> >>> +
> >>> +static void
> >>> +en_port_mirror_run(struct engine_node *node, void *data)
> >>> +{
> >>> +    struct port_mirror_ctx pm_ctx;
> >>> +    struct ed_type_port_mirror *port_mirror_data = data;
> >>> +    struct ed_type_runtime_data *rt_data =
> >>> +        engine_get_input_data("runtime_data", node);
> >>> +
> >>> +    init_port_mirror_ctx(node, rt_data, port_mirror_data, &pm_ctx);
> >>> +
> >>> +    ovn_port_mirror_run(&pm_ctx);
> >>> +    engine_set_node_state(node, EN_UPDATED);
> >>> +}
> >>> +
> >>> +static bool
> >>> +port_mirror_runtime_data_handler(struct engine_node *node, void *data)
> >>> +{
> >>> +    struct ed_type_runtime_data *rt_data =
> >>> +        engine_get_input_data("runtime_data", node);
> >>> +
> >>> +    /* There is no tracked data. Fall back to full recompute of
> >>> port_mirror */
> >>> +    if (!rt_data->tracked) {
> >>> +        return false;
> >>> +    }
> >>> +
> >>> +    struct hmap *tracked_dp_bindings = &rt_data->tracked_dp_bindings;
> >>> +    if (hmap_is_empty(tracked_dp_bindings)) {
> >>> +        return true;
> >>> +    }
> >>> +
> >>> +    struct port_mirror_ctx pm_ctx;
> >>> +    struct ed_type_port_mirror *port_mirror_data = data;
> >>> +    init_port_mirror_ctx(node, rt_data, port_mirror_data, &pm_ctx);
> >>> +
> >>> +    struct tracked_datapath *tdp;
> >>> +    HMAP_FOR_EACH (tdp, node, tracked_dp_bindings) {
> >>> +        if (tdp->tracked_type != TRACKED_RESOURCE_UPDATED) {
> >>> +            /* Fall back to full recompute when a local datapath
> >>> +             * is added or deleted. */
> >>> +            return false;
> >>> +        }
> >>> +
> >>> +        struct shash_node *shash_node;
> >>> +        SHASH_FOR_EACH (shash_node, &tdp->lports) {
> >>> +            struct tracked_lport *lport = shash_node->data;
> >>> +            bool removed =
> >>> +                lport->tracked_type == TRACKED_RESOURCE_REMOVED ?
> >>> true: false;
> >>> +            if (!ovn_port_mirror_handle_lport(lport->pb, removed,
> >>> &pm_ctx)) {
> >>> +                return false;
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +
> >>> +    engine_set_node_state(node, EN_UPDATED);
> >>> +    return true;
> >>> +}
> >>> +
> >>> +static bool
> >>> +port_mirror_port_binding_handler(struct engine_node *node, void *data)
> >>> +{
> >>> +    struct port_mirror_ctx pm_ctx;
> >>> +    struct ed_type_port_mirror *port_mirror_data = data;
> >>> +    struct ed_type_runtime_data *rt_data =
> >>> +        engine_get_input_data("runtime_data", node);
> >>> +
> >>> +    init_port_mirror_ctx(node, rt_data, port_mirror_data, &pm_ctx);
> >>> +
> >>> +    /* handle port binding updates (i.,e when the mirror column
> >>> +     * of port_binding is updated)
> >>> +     */
> >>> +    const struct sbrec_port_binding *pb;
> >>> +    SBREC_PORT_BINDING_TABLE_FOR_EACH_TRACKED (pb,
> >>> + pm_ctx.port_binding_table) {
> >>> +        bool removed = sbrec_port_binding_is_deleted(pb);
> >>> +        if (!ovn_port_mirror_handle_lport(pb, removed, &pm_ctx)) {
> >>> +            return false;
> >>> +        }
> >>> +    }
> >>> +
> >>> +    engine_set_node_state(node, EN_UPDATED);
> >>> +    return true;
> >>> +
> >>> +}
> >>> +
> >>> +static bool
> >>> +port_mirror_sb_mirror_handler(struct engine_node *node, void *data)
> >>> +{
> >>> +    struct port_mirror_ctx pm_ctx;
> >>> +    struct ed_type_port_mirror *port_mirror_data = data;
> >>> +    struct ed_type_runtime_data *rt_data =
> >>> +        engine_get_input_data("runtime_data", node);
> >>> +
> >>> +    init_port_mirror_ctx(node, rt_data, port_mirror_data, &pm_ctx);
> >>> +
> >>> +    /* handle sb mirror updates
> >>> +     */
> >>> +    if (!ovn_port_mirror_handle_update(&pm_ctx)) {
> >>> +        return false;
> >>> +    }
> >>> +
> >>> +    engine_set_node_state(node, EN_UPDATED);
> >>> +    return true;
> >>> +
> >>> +}
> >>> +
> >>>   /* Engine node which is used to handle the Non VIF data like
> >>>    *   - OVS patch ports
> >>>    *   - Tunnel ports and the related chassis information.
> >>> @@ -3704,6 +3905,7 @@ main(int argc, char *argv[])
> >>>       ENGINE_NODE_WITH_CLEAR_TRACK_DATA(port_groups, "port_groups");
> >>>       ENGINE_NODE(northd_options, "northd_options");
> >>>       ENGINE_NODE(dhcp_options, "dhcp_options");
> >>> +    ENGINE_NODE(port_mirror, "port_mirror");
> >>>
> >>>   #define SB_NODE(NAME, NAME_STR) ENGINE_NODE_SB(NAME, NAME_STR);
> >>>       SB_NODES
> >>> @@ -3862,6 +4064,22 @@ main(int argc, char *argv[])
> >>>       engine_add_input(&en_flow_output, &en_pflow_output,
> >>>                        flow_output_pflow_output_handler);
> >>>
> >>> +    engine_add_input(&en_port_mirror, &en_ovs_open_vswitch, NULL);
> >>> +    engine_add_input(&en_port_mirror, &en_ovs_bridge, NULL);
> >>> +    engine_add_input(&en_port_mirror, &en_ovs_mirror, NULL);
> >>> +    engine_add_input(&en_port_mirror, &en_sb_chassis, NULL);
> >>> +    engine_add_input(&en_port_mirror, &en_ovs_port,
> >>> engine_noop_handler);
> >>> +    engine_add_input(&en_port_mirror, &en_ovs_interface_shadow,
> >>> +                     engine_noop_handler);
> >>> +    engine_add_input(&en_flow_output, &en_port_mirror,
> >>> +                     engine_noop_handler);
> >>> +    engine_add_input(&en_port_mirror, &en_runtime_data,
> >>> +                     port_mirror_runtime_data_handler);
> >>> +    engine_add_input(&en_port_mirror, &en_sb_mirror,
> >>> +                     port_mirror_sb_mirror_handler);
> >>> +    engine_add_input(&en_port_mirror, &en_sb_port_binding,
> >>> +                     port_mirror_port_binding_handler);
> >>> +
> >>>       struct engine_arg engine_arg = {
> >>>           .sb_idl = ovnsb_idl_loop.idl,
> >>>           .ovs_idl = ovs_idl_loop.idl,
> >>> @@ -4131,34 +4349,36 @@ main(int argc, char *argv[])
> >>>
> >>> stopwatch_start(CONTROLLER_LOOP_STOPWATCH_NAME,
> >>>                                       time_msec());
> >>> -                    if (ovnsb_idl_txn) {
> >>> -                        if (ofctrl_has_backlog()) {
> >>> -                            /* When there are in-flight messages
> >>> pending to
> >>> -                             * ovs-vswitchd, we should hold on
> >>> recomputing so
> >>> -                             * that the previous flow installations
> >>> won't be
> >>> -                             * delayed.  However, we still want to
> >>> try if
> >>> -                             * recompute is not needed and we can
> >>> quickly
> >>> -                             * incrementally process the new
> >>> changes, to avoid
> >>> -                             * unnecessarily forced recomputes
> >>> later on.  This
> >>> -                             * is because the OVSDB change tracker
> >>> cannot
> >>> -                             * preserve tracked changes across
> >>> iterations.  If
> >>> -                             * change tracking is improved, we can
> >>> simply skip
> >>> -                             * this round of engine_run and
> >>> continue processing
> >>> -                             * acculated changes incrementally
> >>> later when
> >>> -                             * ofctrl_has_backlog() returns false. */
> >>> -                            engine_run(false);
> >>> -                        } else {
> >>> -                            engine_run(true);
> >>> -                        }
> >>> -                    } else {
> >>> -                        /* Even if there's no SB DB transaction
> >>> available,
> >>> +
> >>> +                    bool allow_engine_recompute = true;
> >>> +
> >>> +                    if (!ovnsb_idl_txn || !ovs_idl_txn ||
> >>> + ofctrl_has_backlog()) {
> >>> +                        /* When there are in-flight messages
> >>> pending to
> >>> +                         * ovs-vswitchd, we should hold on
> >>> recomputing so
> >>> +                         * that the previous flow installations
> >>> won't be
> >>> +                         * delayed.  However, we still want to try if
> >>> +                         * recompute is not needed and we can quickly
> >>> +                         * incrementally process the new changes,
> >>> to avoid
> >>> +                         * unnecessarily forced recomputes later
> >>> on.  This
> >>> +                         * is because the OVSDB change tracker cannot
> >>> +                         * preserve tracked changes across
> >>> iterations.  If
> >>> +                         * change tracking is improved, we can
> >>> simply skip
> >>> +                         * this round of engine_run and continue
> >>> processing
> >>> +                         * acculated changes incrementally later when
> >>> +                         * ofctrl_has_backlog() returns false. */
> >>> +
> >>> +                        /* Even if there's no SB/OVS DB transaction
> >>> available,
> >>>                            * try to run the engine so that we can
> >>> handle any
> >>>                            * incremental changes that don't require
> >>> a recompute.
> >>>                            * If a recompute is required, the engine
> >>> will abort,
> >>>                            * triggerring a full run in the next
> >>> iteration.
> >>>                            */
> >>> -                        engine_run(false);
> >>> +                        allow_engine_recompute = false;
> >>>                       }
> >>> +
> >>> +                    engine_run(allow_engine_recompute);
> >>> +
> >>> stopwatch_stop(CONTROLLER_LOOP_STOPWATCH_NAME,
> >>>                                      time_msec());
> >>>                       if (engine_has_updated()) {
> >>> diff --git a/northd/en-northd.c b/northd/en-northd.c
> >>> index 7fe83db64..608220b1f 100644
> >>> --- a/northd/en-northd.c
> >>> +++ b/northd/en-northd.c
> >>> @@ -80,6 +80,8 @@ void en_northd_run(struct engine_node *node, void
> >>> *data)
> >>>           EN_OVSDB_GET(engine_get_input("NB_acl", node));
> >>>       input_data.nbrec_static_mac_binding_table =
> >>> EN_OVSDB_GET(engine_get_input("NB_static_mac_binding", node));
> >>> +    input_data.nbrec_mirror_table =
> >>> +        EN_OVSDB_GET(engine_get_input("NB_mirror", node));
> >>>
> >>>       input_data.sbrec_sb_global_table =
> >>>           EN_OVSDB_GET(engine_get_input("SB_sb_global", node));
> >>> @@ -113,6 +115,8 @@ void en_northd_run(struct engine_node *node,
> >>> void *data)
> >>>           EN_OVSDB_GET(engine_get_input("SB_chassis_private", node));
> >>>       input_data.sbrec_static_mac_binding_table =
> >>> EN_OVSDB_GET(engine_get_input("SB_static_mac_binding", node));
> >>> +    input_data.sbrec_mirror_table =
> >>> +        EN_OVSDB_GET(engine_get_input("SB_mirror", node));
> >>>
> >>>       northd_run(&input_data, data,
> >>>                  eng_ctx->ovnnb_idl_txn,
> >>> diff --git a/northd/inc-proc-northd.c b/northd/inc-proc-northd.c
> >>> index 54e0ad3b0..ac27a730e 100644
> >>> --- a/northd/inc-proc-northd.c
> >>> +++ b/northd/inc-proc-northd.c
> >>> @@ -50,6 +50,7 @@ VLOG_DEFINE_THIS_MODULE(inc_proc_northd);
> >>>       NB_NODE(acl, "acl") \
> >>>       NB_NODE(logical_router, "logical_router") \
> >>>       NB_NODE(qos, "qos") \
> >>> +    NB_NODE(mirror, "mirror") \
> >>>       NB_NODE(meter, "meter") \
> >>>       NB_NODE(meter_band, "meter_band") \
> >>>       NB_NODE(logical_router_port, "logical_router_port") \
> >>> @@ -92,6 +93,7 @@ VLOG_DEFINE_THIS_MODULE(inc_proc_northd);
> >>>       SB_NODE(logical_flow, "logical_flow") \
> >>>       SB_NODE(logical_dp_group, "logical_DP_group") \
> >>>       SB_NODE(multicast_group, "multicast_group") \
> >>> +    SB_NODE(mirror, "mirror") \
> >>>       SB_NODE(meter, "meter") \
> >>>       SB_NODE(meter_band, "meter_band") \
> >>>       SB_NODE(datapath_binding, "datapath_binding") \
> >>> @@ -172,6 +174,7 @@ void inc_proc_northd_init(struct ovsdb_idl_loop
> >>> *nb,
> >>>       engine_add_input(&en_northd, &en_nb_acl, NULL);
> >>>       engine_add_input(&en_northd, &en_nb_logical_router, NULL);
> >>>       engine_add_input(&en_northd, &en_nb_qos, NULL);
> >>> +    engine_add_input(&en_northd, &en_nb_mirror, NULL);
> >>>       engine_add_input(&en_northd, &en_nb_meter, NULL);
> >>>       engine_add_input(&en_northd, &en_nb_meter_band, NULL);
> >>>       engine_add_input(&en_northd, &en_nb_logical_router_port, NULL);
> >>> @@ -194,6 +197,7 @@ void inc_proc_northd_init(struct ovsdb_idl_loop
> >>> *nb,
> >>>       engine_add_input(&en_northd, &en_sb_address_set, NULL);
> >>>       engine_add_input(&en_northd, &en_sb_port_group, NULL);
> >>>       engine_add_input(&en_northd, &en_sb_logical_dp_group, NULL);
> >>> +    engine_add_input(&en_northd, &en_sb_mirror, NULL);
> >>>       engine_add_input(&en_northd, &en_sb_meter, NULL);
> >>>       engine_add_input(&en_northd, &en_sb_meter_band, NULL);
> >>>       engine_add_input(&en_northd, &en_sb_datapath_binding, NULL);
> >>> diff --git a/northd/northd.c b/northd/northd.c
> >>> index b7388afc5..52abdda28 100644
> >>> --- a/northd/northd.c
> >>> +++ b/northd/northd.c
> >>> @@ -3248,6 +3248,89 @@ ovn_port_update_sbrec_chassis(
> >>>       free(requested_chassis_sb);
> >>>   }
> >>>
> >>> +static void
> >>> +do_sb_mirror_addition(struct northd_input *input_data,
> >>> +                      const struct ovn_port *op)
> >>> +{
> >>> +    for (size_t i = 0; i < op->nbsp->n_mirror_rules; i++) {
> >>> +        const struct sbrec_mirror *sb_mirror;
> >>> +        SBREC_MIRROR_TABLE_FOR_EACH (sb_mirror,
> >>> + input_data->sbrec_mirror_table) {
> >>> +            if (!strcmp(sb_mirror->name,
> >>> + op->nbsp->mirror_rules[i]->name)) {
> >>> +                /* Add the value to SB */
> >>> + sbrec_port_binding_update_mirror_rules_addvalue(op->sb,
> >>> + sb_mirror);
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +}
> >>> +
> >>> +static void
> >>> +sbrec_port_binding_update_mirror_rules(struct northd_input
> >>> *input_data,
> >>> +                                       const struct ovn_port *op)
> >>> +{
> >>> +    size_t i = 0;
> >>> +    if (op->sb->n_mirror_rules > op->nbsp->n_mirror_rules) {
> >>> +        /* Needs deletion in SB */
> >>> +        struct shash nb_mirror_rules =
> >>> SHASH_INITIALIZER(&nb_mirror_rules);
> >>> +        for (i = 0; i < op->nbsp->n_mirror_rules; i++) {
> >>> +            shash_add(&nb_mirror_rules,
> >>> + op->nbsp->mirror_rules[i]->name,
> >>> + op->nbsp->mirror_rules[i]);
> >>> +        }
> >>> +
> >>> +        for (i = 0; i < op->sb->n_mirror_rules; i++) {
> >>> +            if (!shash_find(&nb_mirror_rules,
> >>> + op->sb->mirror_rules[i]->name)) {
> >>> + sbrec_port_binding_update_mirror_rules_delvalue(op->sb,
> >>> + op->sb->mirror_rules[i]);
> >>> +            }
> >>> +        }
> >>> +
> >>> +        struct shash_node *node, *next;
> >>> +        SHASH_FOR_EACH_SAFE (node, next, &nb_mirror_rules) {
> >>> +            shash_delete(&nb_mirror_rules, node);
> >>> +        }
> >>> +        shash_destroy(&nb_mirror_rules);
> >>> +
> >>> +    } else if (op->sb->n_mirror_rules < op->nbsp->n_mirror_rules) {
> >>> +        /* Needs addition in SB */
> >>> +        do_sb_mirror_addition(input_data, op);
> >>> +    } else if (op->sb->n_mirror_rules == op->nbsp->n_mirror_rules) {
> >>> +        /*
> >>> +         * Check if its the same mirrors on both SB and NB DBs
> >>> +         * If not update accordingly.
> >>> +         */
> >>> +        bool needs_sb_addition = false;
> >>> +        struct shash nb_mirror_rules =
> >>> SHASH_INITIALIZER(&nb_mirror_rules);
> >>> +        for (i = 0; i < op->nbsp->n_mirror_rules; i++) {
> >>> +            shash_add(&nb_mirror_rules,
> >>> + op->nbsp->mirror_rules[i]->name,
> >>> + op->nbsp->mirror_rules[i]);
> >>> +        }
> >>> +
> >>> +        for (i = 0; i < op->sb->n_mirror_rules; i++) {
> >>> +            if (!shash_find(&nb_mirror_rules,
> >>> + op->sb->mirror_rules[i]->name)) {
> >>> + sbrec_port_binding_update_mirror_rules_delvalue(op->sb,
> >>> + op->sb->mirror_rules[i]);
> >>> +                    needs_sb_addition = true;
> >>> +            }
> >>> +        }
> >>> +
> >>> +        struct shash_node *node, *next;
> >>> +        SHASH_FOR_EACH_SAFE (node, next, &nb_mirror_rules) {
> >>> +            shash_delete(&nb_mirror_rules, node);
> >>> +        }
> >>> +        shash_destroy(&nb_mirror_rules);
> >>> +
> >>> +        if (needs_sb_addition) {
> >>> +            do_sb_mirror_addition(input_data, op);
> >>> +        }
> >>> +    }
> >>> +}
> >>> +
> >>>   static void
> >>>   ovn_port_update_sbrec(struct northd_input *input_data,
> >>>                         struct ovsdb_idl_txn *ovnsb_txn,
> >>> @@ -3607,6 +3690,15 @@ ovn_port_update_sbrec(struct northd_input
> >>> *input_data,
> >>>           }
> >>>           sbrec_port_binding_set_external_ids(op->sb, &ids);
> >>>           smap_destroy(&ids);
> >>> +
> >>> +        if (!op->nbsp->n_mirror_rules) {
> >>> +            /* Nothing is set. Clear mirror_rules from pb. */
> >>> +            sbrec_port_binding_set_mirror_rules(op->sb, NULL, 0);
> >>> +        } else {
> >>> +            /* Check if SB DB update needed */
> >>> + sbrec_port_binding_update_mirror_rules(input_data, op);
> >>> +        }
> >>> +
> >>>       }
> >>>       if (op->tunnel_key != op->sb->tunnel_key) {
> >>>           sbrec_port_binding_set_tunnel_key(op->sb, op->tunnel_key);
> >>> @@ -15014,6 +15106,85 @@ sync_meters(struct northd_input *input_data,
> >>>       shash_destroy(&sb_meters);
> >>>   }
> >>>
> >>> +static bool
> >>> +mirror_needs_update(const struct nbrec_mirror *nb_mirror,
> >>> +                  const struct sbrec_mirror *sb_mirror)
> >>> +{
> >>> +
> >>> +    if (nb_mirror->index != sb_mirror->index) {
> >>> +        return true;
> >>> +    } else if (strcmp(nb_mirror->sink, sb_mirror->sink)) {
> >>> +        return true;
> >>> +    } else if (strcmp(nb_mirror->type, sb_mirror->type)) {
> >>> +        return true;
> >>> +    } else if (strcmp(nb_mirror->filter, sb_mirror->filter)) {
> >>> +        return true;
> >>> +    }
> >>> +
> >>> +    return false;
> >>> +}
> >>> +
> >>> +static void
> >>> +sync_mirrors_iterate_nb_mirror(struct ovsdb_idl_txn *ovnsb_txn,
> >>> +                             const char *mirror_name,
> >>> +                             const struct nbrec_mirror *nb_mirror,
> >>> +                             struct shash *sb_mirrors,
> >>> +                             struct sset *used_sb_mirrors)
> >>> +{
> >>> +    const struct sbrec_mirror *sb_mirror;
> >>> +    bool new_sb_mirror = false;
> >>> +
> >>> +    sb_mirror = shash_find_data(sb_mirrors, mirror_name);
> >>> +    if (!sb_mirror) {
> >>> +        sb_mirror = sbrec_mirror_insert(ovnsb_txn);
> >>> +        sbrec_mirror_set_name(sb_mirror, mirror_name);
> >>> +        shash_add(sb_mirrors, sb_mirror->name, sb_mirror);
> >>> +        new_sb_mirror = true;
> >>> +    }
> >>> +    sset_add(used_sb_mirrors, mirror_name);
> >>> +
> >>> +    if ((new_sb_mirror) || mirror_needs_update(nb_mirror,
> >>> sb_mirror)) {
> >>> + sbrec_mirror_set_filter(sb_mirror,nb_mirror->filter);
> >>> +        sbrec_mirror_set_index(sb_mirror, nb_mirror->index);
> >>> +        sbrec_mirror_set_sink(sb_mirror, nb_mirror->sink);
> >>> +        sbrec_mirror_set_type(sb_mirror, nb_mirror->type);
> >>> +    }
> >>> +}
> >>> +
> >>> +static void
> >>> +sync_mirrors(struct northd_input *input_data,
> >>> +            struct ovsdb_idl_txn *ovnsb_txn)
> >>> +{
> >>> +    struct shash sb_mirrors = SHASH_INITIALIZER(&sb_mirrors);
> >>> +    struct sset used_sb_mirrors = SSET_INITIALIZER(&used_sb_mirrors);
> >>> +
> >>> +    const struct sbrec_mirror *sb_mirror;
> >>> +    SBREC_MIRROR_TABLE_FOR_EACH (sb_mirror,
> >>> input_data->sbrec_mirror_table) {
> >>> +        shash_add(&sb_mirrors, sb_mirror->name, sb_mirror);
> >>> +    }
> >>> +
> >>> +    const struct nbrec_mirror *nb_mirror;
> >>> +    NBREC_MIRROR_TABLE_FOR_EACH (nb_mirror,
> >>> input_data->nbrec_mirror_table) {
> >>> +        sync_mirrors_iterate_nb_mirror(ovnsb_txn, nb_mirror->name,
> >>> nb_mirror,
> >>> +                                     &sb_mirrors, &used_sb_mirrors);
> >>> +    }
> >>> +
> >>> +    const char *used_mirror;
> >>> +    const char *used_mirror_next;
> >>> +    SSET_FOR_EACH_SAFE (used_mirror, used_mirror_next,
> >>> &used_sb_mirrors) {
> >>> +        shash_find_and_delete(&sb_mirrors, used_mirror);
> >>> +        sset_delete(&used_sb_mirrors,
> >>> SSET_NODE_FROM_NAME(used_mirror));
> >>> +    }
> >>> +    sset_destroy(&used_sb_mirrors);
> >>> +
> >>> +    struct shash_node *node, *next;
> >>> +    SHASH_FOR_EACH_SAFE (node, next, &sb_mirrors) {
> >>> +        sbrec_mirror_delete(node->data);
> >>> +        shash_delete(&sb_mirrors, node);
> >>> +    }
> >>> +    shash_destroy(&sb_mirrors);
> >>> +}
> >>> +
> >>>   /*
> >>>    * struct 'dns_info' is used to sync the DNS records between OVN
> >>> Northbound db
> >>>    * and Southbound db.
> >>> @@ -15644,6 +15815,7 @@ ovnnb_db_run(struct northd_input *input_data,
> >>>       sync_address_sets(input_data, ovnsb_txn, &data->datapaths);
> >>>       sync_port_groups(input_data, ovnsb_txn, &data->port_groups);
> >>>       sync_meters(input_data, ovnsb_txn, &data->meter_groups);
> >>> +    sync_mirrors(input_data, ovnsb_txn);
> >>>       sync_dns_entries(input_data, ovnsb_txn, &data->datapaths);
> >>>       cleanup_stale_fdb_entries(input_data, &data->datapaths);
> >>>       stopwatch_stop(CLEAR_LFLOWS_CTX_STOPWATCH_NAME, time_msec());
> >>> diff --git a/northd/northd.h b/northd/northd.h
> >>> index da90e2815..17a62ea10 100644
> >>> --- a/northd/northd.h
> >>> +++ b/northd/northd.h
> >>> @@ -36,6 +36,7 @@ struct northd_input {
> >>>       const struct nbrec_acl_table *nbrec_acl_table;
> >>>       const struct nbrec_static_mac_binding_table
> >>>           *nbrec_static_mac_binding_table;
> >>> +    const struct nbrec_mirror_table *nbrec_mirror_table;
> >>>
> >>>       /* Southbound table references */
> >>>       const struct sbrec_sb_global_table *sbrec_sb_global_table;
> >>> @@ -55,6 +56,7 @@ struct northd_input {
> >>>       const struct sbrec_chassis_private_table
> >>> *sbrec_chassis_private_table;
> >>>       const struct sbrec_static_mac_binding_table
> >>>           *sbrec_static_mac_binding_table;
> >>> +    const struct sbrec_mirror_table *sbrec_mirror_table;
> >>>
> >>>       /* Indexes */
> >>>       struct ovsdb_idl_index *sbrec_chassis_by_name;
> >>> diff --git a/ovn-nb.ovsschema b/ovn-nb.ovsschema
> >>> index 174364c8b..01de55222 100644
> >>> --- a/ovn-nb.ovsschema
> >>> +++ b/ovn-nb.ovsschema
> >>> @@ -1,7 +1,7 @@
> >>>   {
> >>>       "name": "OVN_Northbound",
> >>> -    "version": "6.3.0",
> >>> -    "cksum": "4042813038 31869",
> >>> +    "version": "6.4.0",
> >>> +    "cksum": "589874483 33352",
> >>>       "tables": {
> >>>           "NB_Global": {
> >>>               "columns": {
> >>> @@ -132,6 +132,11 @@
> >>>                                               "refType": "weak"},
> >>>                                    "min": 0,
> >>>                                    "max": 1}},
> >>> +                "mirror_rules": {"type": {"key": {"type": "uuid",
> >>> +                                          "refTable": "Mirror",
> >>> +                                          "refType": "weak"},
> >>> +                                  "min": 0,
> >>> +                                  "max": "unlimited"}},
> >>>                   "ha_chassis_group": {
> >>>                       "type": {"key": {"type": "uuid",
> >>>                                        "refTable": "HA_Chassis_Group",
> >>> @@ -301,6 +306,28 @@
> >>>                       "type": {"key": "string", "value": "string",
> >>>                                "min": 0, "max": "unlimited"}}},
> >>>               "isRoot": false},
> >>> +        "Mirror": {
> >>> +            "columns": {
> >>> +                "name": {"type": "string"},
> >>> +                "filter": {"type": {"key": {"type": "string",
> >>> +                                            "enum": ["set",
> >>> ["from-lport",
> >>> + "to-lport",
> >>> + "both"]]}}},
> >>> +                "sink":{"type": "string"},
> >>> +                "type": {"type": {"key": {"type": "string",
> >>> +                                            "enum": ["set", ["gre",
> >>> + "erspan"]]}}},
> >>> +                "index": {"type": "integer"},
> >>> +                "src": {"type": {"key": {"type": "uuid",
> >>> +                                           "refTable":
> >>> "Logical_Switch_Port",
> >>> +                                           "refType": "weak"},
> >>> +                                   "min": 0,
> >>> +                                   "max": "unlimited"}},
> >>> +                "external_ids": {
> >>> +                    "type": {"key": "string", "value": "string",
> >>> +                             "min": 0, "max": "unlimited"}}},
> >>> +            "indexes": [["name"]],
> >>> +            "isRoot": true},
> >>>           "Meter": {
> >>>               "columns": {
> >>>                   "name": {"type": "string"},
> >>> diff --git a/ovn-nb.xml b/ovn-nb.xml
> >>> index f41e9d7c0..d8730c8fc 100644
> >>> --- a/ovn-nb.xml
> >>> +++ b/ovn-nb.xml
> >>> @@ -1554,6 +1554,11 @@
> >>>         </column>
> >>>       </group>
> >>>
> >>> +    <column name="mirror_rules">
> >>> +        Mirror rules that apply to logical switch port which is the
> >>> source.
> >>> +        Please see the <ref table="Mirror"/> table.
> >>> +    </column>
> >>> +
> >>>       <column name="ha_chassis_group">
> >>>         References a row in the OVN Northbound database's
> >>>         <ref table="HA_Chassis_Group" db="OVN_Northbound"/> table.
> >>> @@ -2491,6 +2496,64 @@
> >>>       </column>
> >>>     </table>
> >>>
> >>> +  <table name="Mirror" title="Mirror Entry">
> >>> +    <p>
> >>> +      Each row in this table represents one Mirror that can be used
> >>> for
> >>> +      port mirroring. These Mirrors are referenced by the
> >>> +      <ref column="mirror_rules" table="Logical_Switch_Port"/>
> >>> column in
> >>> +      the <ref table="Logical_Switch_Port"/> table.
> >>> +    </p>
> >>> +
> >>> +    <column name="name">
> >>> +      <p>
> >>> +        Represents the name of the mirror.
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="filter">
> >>> +      <p>
> >>> +        The value of this field represents selection criteria of
> >>> the mirror.
> >>> +        Supported values for filter to-lport / from-lport / both
> >>> +        to-lport - to mirror packets coming into logical port
> >>> +        from-lport - to mirror packets going out of logical port
> >>> +        both - to mirror packets coming into and going out of
> >>> logical port.
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="sink">
> >>> +      <p>
> >>> +        The value of this field represents the destination/sink of
> >>> the mirror.
> >>> +        The value it takes is an IP address of the sink port.
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="type">
> >>> +      <p>
> >>> +        The value of this field represents the type of the tunnel
> >>> used for
> >>> +        sending the mirrored packets. Supported Tunnel types gre
> >>> and erspan
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="index">
> >>> +      <p>
> >>> +        The value of this field represents the tunnel ID. Depending
> >>> on the
> >>> +        tunnel type configured, GRE key value if type GRE and
> >>> erspan_idx value
> >>> +        if ERSPAN
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="src">
> >>> +      <p>
> >>> +        The value of this field represents a list of source ports
> >>> for the
> >>> +        mirror. Please see the <ref table="Logical_Switch_Port"/>
> >>> table.
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="external_ids">
> >>> +      See <em>External IDs</em> at the beginning of this document.
> >>> +    </column>
> >>> +  </table>
> >>> +
> >>>     <table name="Meter" title="Meter entry">
> >>>       <p>
> >>>         Each row in this table represents a meter that can be used
> >>> for QoS or
> >>> diff --git a/ovn-sb.ovsschema b/ovn-sb.ovsschema
> >>> index 576ebbdeb..b83134416 100644
> >>> --- a/ovn-sb.ovsschema
> >>> +++ b/ovn-sb.ovsschema
> >>> @@ -1,7 +1,7 @@
> >>>   {
> >>>       "name": "OVN_Southbound",
> >>> -    "version": "20.25.0",
> >>> -    "cksum": "53184112 28845",
> >>> +    "version": "20.26.0",
> >>> +    "cksum": "2344151793 30004",
> >>>       "tables": {
> >>>           "SB_Global": {
> >>>               "columns": {
> >>> @@ -142,6 +142,23 @@
> >>>               "indexes": [["datapath", "tunnel_key"],
> >>>                           ["datapath", "name"]],
> >>>               "isRoot": true},
> >>> +        "Mirror": {
> >>> +            "columns": {
> >>> +                "name": {"type": "string"},
> >>> +                "filter": {"type": {"key": {"type": "string",
> >>> +                                            "enum": ["set",
> >>> + ["from-lport",
> >>> + "to-lport","both"]]}}},
> >>> +                "sink":{"type": "string"},
> >>> +                "type": {"type": {"key": {"type": "string",
> >>> +                                            "enum": ["set",
> >>> +                                                     ["gre",
> >>> "erspan"]]}}},
> >>> +                "index": {"type": "integer"},
> >>> +                "external_ids": {
> >>> +                    "type": {"key": "string", "value": "string",
> >>> +                             "min": 0, "max": "unlimited"}}},
> >>> +            "indexes": [["name"]],
> >>> +            "isRoot": true},
> >>>           "Meter": {
> >>>               "columns": {
> >>>                   "name": {"type": "string"},
> >>> @@ -230,6 +247,11 @@
> >>> "refTable": "Encap",
> >>> "refType": "weak"},
> >>>                                       "min": 0, "max": "unlimited"}},
> >>> +                "mirror_rules": {"type": {"key": {"type": "uuid",
> >>> +                                          "refTable": "Mirror",
> >>> +                                          "refType": "weak"},
> >>> +                                  "min": 0,
> >>> +                                  "max": "unlimited"}},
> >>>                   "mac": {"type": {"key": "string",
> >>>                                    "min": 0,
> >>>                                    "max": "unlimited"}},
> >>> diff --git a/ovn-sb.xml b/ovn-sb.xml
> >>> index 315d60853..05c0db6b4 100644
> >>> --- a/ovn-sb.xml
> >>> +++ b/ovn-sb.xml
> >>> @@ -2742,6 +2742,51 @@ tcp.flags = RST;
> >>>       </column>
> >>>     </table>
> >>>
> >>> +  <table name="Mirror" title="Mirror Entry">
> >>> +    <p>
> >>> +      Each row in this table represents one Mirror that can be used
> >>> for
> >>> +      port mirroring. These Mirrors are referenced by the
> >>> +      <ref column="mirror_rules" table="Port_Binding"/> column in
> >>> +      the <ref table="Port_Binding"/> table.
> >>> +    </p>
> >>> +
> >>> +    <column name="name">
> >>> +      <p>
> >>> +        Represents the name of the mirror.
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="filter">
> >>> +      <p>
> >>> +        The value of this field represents selection criteria of
> >>> the mirror.
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="sink">
> >>> +      <p>
> >>> +        The value of this field represents the destination/sink of
> >>> the mirror.
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="type">
> >>> +      <p>
> >>> +        The value of this field represents the type of the tunnel
> >>> used for
> >>> +        sending the mirrored packets
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="index">
> >>> +      <p>
> >>> +        The value of this field represents the key/idx depending on
> >>> the
> >>> +        tunnel type configured
> >>> +      </p>
> >>> +    </column>
> >>> +
> >>> +    <column name="external_ids">
> >>> +      See <em>External IDs</em> at the beginning of this document.
> >>> +    </column>
> >>> +  </table>
> >>> +
> >>>     <table name="Meter" title="Meter entry">
> >>>       <p>
> >>>         Each row in this table represents a meter that can be used
> >>> for QoS or
> >>> @@ -3244,6 +3289,11 @@ tcp.flags = RST;
> >>>         </column>
> >>>       </group>
> >>>
> >>> +    <column name="mirror_rules">
> >>> +        Mirror rules that apply to the port binding.
> >>> +        Please see the <ref table="Mirror"/> table.
> >>> +    </column>
> >>> +
> >>>       <group title="Patch Options">
> >>>         <p>
> >>>           These options apply to logical ports with <ref
> >>> column="type"/> of
> >>> diff --git a/tests/ovn-nbctl.at b/tests/ovn-nbctl.at
> >>> index 4d480e357..d79f9d929 100644
> >>> --- a/tests/ovn-nbctl.at
> >>> +++ b/tests/ovn-nbctl.at
> >>> @@ -435,6 +435,126 @@ AT_CHECK([ovn-nbctl meter-list], [0], [dnl
> >>>
> >>>   dnl
> >>> ---------------------------------------------------------------------
> >>>
> >>> +OVN_NBCTL_TEST([ovn_nbctl_mirrors], [mirrors], [
> >>> +AT_CHECK([ovn-nbctl mirror-add mirror1 gre 0 from-lport 10.10.10.1])
> >>> +AT_CHECK([ovn-nbctl mirror-add mirror2 erspan 1 both 10.10.10.2])
> >>> +AT_CHECK([ovn-nbctl mirror-add mirror3 gre 2 to-lport 10.10.10.3])
> >>> +AT_CHECK([ovn-nbctl ls-add sw0])
> >>> +AT_CHECK([ovn-nbctl lsp-add sw0 sw0-port1])
> >>> +AT_CHECK([ovn-nbctl lsp-add sw0 sw0-port2])
> >>> +AT_CHECK([ovn-nbctl lsp-add sw0 sw0-port3])
> >>> +
> >>> +dnl Add duplicate mirror name
> >>> +AT_CHECK([ovn-nbctl mirror-add mirror1 gre 0 from-lport
> >>> 10.10.10.5], [1], [], [stderr])
> >>> +AT_CHECK([grep 'already exists' stderr], [0], [ignore])
> >>> +
> >>> +dnl Attach invalid source port to mirror
> >>> +AT_CHECK([ovn-nbctl lsp-attach-mirror sw0-port4 mirror3], [1], [],
> >>> [stderr])
> >>> +AT_CHECK([grep 'port name not found' stderr], [0], [ignore])
> >>> +
> >>> +dnl Attach source port to invalid mirror
> >>> +AT_CHECK([ovn-nbctl lsp-attach-mirror sw0-port3 mirror4], [1], [],
> >>> [stderr])
> >>> +AT_CHECK([grep 'mirror name not found' stderr], [0], [ignore])
> >>> +
> >>> +dnl Attach source port to mirror
> >>> +AT_CHECK([ovn-nbctl lsp-attach-mirror sw0-port1 mirror3])
> >>> +
> >>> +dnl Attach one more source port to mirror
> >>> +AT_CHECK([ovn-nbctl lsp-attach-mirror sw0-port3 mirror3])
> >>> +
> >>> +dnl Verify if multiple ports are attached to the same mirror properly
> >>> +AT_CHECK([ovn-nbctl mirror-list], [0], [dnl
> >>> +mirror1:
> >>> +  Type     :  gre
> >>> +  Sink     :  10.10.10.1
> >>> +  Filter   :  from-lport
> >>> +  Index/Key:  0
> >>> +  Sources  :  None attached
> >>> +mirror2:
> >>> +  Type     :  erspan
> >>> +  Sink     :  10.10.10.2
> >>> +  Filter   :  both
> >>> +  Index/Key:  1
> >>> +  Sources  :  None attached
> >>> +mirror3:
> >>> +  Type     :  gre
> >>> +  Sink     :  10.10.10.3
> >>> +  Filter   :  to-lport
> >>> +  Index/Key:  2
> >>> +  Sources  :  sw0-port1  sw0-port3
> >>> +])
> >>> +
> >>> +dnl Detach one source port from mirror
> >>> +AT_CHECK([ovn-nbctl lsp-detach-mirror sw0-port3 mirror3])
> >>> +
> >>> +dnl Verify if detach source port from mirror happens properly
> >>> +AT_CHECK([ovn-nbctl mirror-list], [0], [dnl
> >>> +mirror1:
> >>> +  Type     :  gre
> >>> +  Sink     :  10.10.10.1
> >>> +  Filter   :  from-lport
> >>> +  Index/Key:  0
> >>> +  Sources  :  None attached
> >>> +mirror2:
> >>> +  Type     :  erspan
> >>> +  Sink     :  10.10.10.2
> >>> +  Filter   :  both
> >>> +  Index/Key:  1
> >>> +  Sources  :  None attached
> >>> +mirror3:
> >>> +  Type     :  gre
> >>> +  Sink     :  10.10.10.3
> >>> +  Filter   :  to-lport
> >>> +  Index/Key:  2
> >>> +  Sources  :  sw0-port1
> >>> +])
> >>> +
> >>> +dnl Delete a single mirror which has source attached.
> >>> +AT_CHECK([ovn-nbctl mirror-del mirror3])
> >>> +
> >>> +dnl Check if the detach happened from source properly
> >>> +AT_CHECK([ovn-nbctl get Logical_Switch_Port sw0-port1 mirror_rules
> >>> |  cut -b 3], [0], [dnl
> >>> +
> >>> +])
> >>> +
> >>> +dnl Check if the mirror deleted properly
> >>> +AT_CHECK([ovn-nbctl mirror-list], [0], [dnl
> >>> +mirror1:
> >>> +  Type     :  gre
> >>> +  Sink     :  10.10.10.1
> >>> +  Filter   :  from-lport
> >>> +  Index/Key:  0
> >>> +  Sources  :  None attached
> >>> +mirror2:
> >>> +  Type     :  erspan
> >>> +  Sink     :  10.10.10.2
> >>> +  Filter   :  both
> >>> +  Index/Key:  1
> >>> +  Sources  :  None attached
> >>> +])
> >>> +
> >>> +dnl Delete another mirror
> >>> +AT_CHECK([ovn-nbctl mirror-del mirror2])
> >>> +
> >>> +dnl Update the Sink address
> >>> +AT_CHECK([ovn-nbctl set mirror . sink=192.168.1.13])
> >>> +
> >>> +AT_CHECK([ovn-nbctl mirror-list], [0], [dnl
> >>> +mirror1:
> >>> +  Type     :  gre
> >>> +  Sink     :  192.168.1.13
> >>> +  Filter   :  from-lport
> >>> +  Index/Key:  0
> >>> +  Sources  :  None attached
> >>> +])
> >>> +
> >>> +dnl Delete all mirrors
> >>> +AT_CHECK([ovn-nbctl mirror-del])
> >>> +AT_CHECK([ovn-nbctl mirror-list], [0], [dnl
> >>> +])])
> >>> +
> >>> +dnl
> >>> ---------------------------------------------------------------------
> >>> +
> >>>   OVN_NBCTL_TEST([ovn_nbctl_nats], [NATs], [
> >>>   AT_CHECK([ovn-nbctl lr-add lr0])
> >>>   AT_CHECK([ovn-nbctl lr-nat-add lr0 snatt 30.0.0.2 192.168.1.2],
> >>> [1], [],
> >>> diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
> >>> index 4f399eccb..4e6c268e4 100644
> >>> --- a/tests/ovn-northd.at
> >>> +++ b/tests/ovn-northd.at
> >>> @@ -2319,6 +2319,108 @@ check_meter_by_name NOT meter_me__${acl1}
> >>> meter_me__${acl2}
> >>>   AT_CLEANUP
> >>>   ])
> >>>
> >>> +OVN_FOR_EACH_NORTHD_NO_HV([
> >>> +AT_SETUP([Check NB-SB mirrors sync])
> >>> +AT_KEYWORDS([mirrors])
> >>> +ovn_start
> >>> +
> >>> +check ovn-nbctl --wait=sb mirror-add mirror1 erspan 0 both 10.10.10.2
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . Sink], [0], [dnl
> >>> +"10.10.10.2"
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . type], [0], [dnl
> >>> +erspan
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . index], [0], [dnl
> >>> +0
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . filter], [0], [dnl
> >>> +both
> >>> +])
> >>> +
> >>> +check ovn-nbctl --wait=sb \
> >>> +    -- set mirror . sink=192.168.1.13
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . Sink], [0], [dnl
> >>> +"192.168.1.13"
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . type], [0], [dnl
> >>> +erspan
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . index], [0], [dnl
> >>> +0
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . filter], [0], [dnl
> >>> +both
> >>> +])
> >>> +
> >>> +check ovn-nbctl --wait=sb \
> >>> +    -- set mirror . type=gre
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . type], [0], [dnl
> >>> +gre
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . Sink], [0], [dnl
> >>> +"192.168.1.13"
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . index], [0], [dnl
> >>> +0
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . filter], [0], [dnl
> >>> +both
> >>> +])
> >>> +
> >>> +check ovn-nbctl --wait=sb \
> >>> +    -- set mirror . index=12
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . index], [0], [dnl
> >>> +12
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . type], [0], [dnl
> >>> +gre
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . Sink], [0], [dnl
> >>> +"192.168.1.13"
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . filter], [0], [dnl
> >>> +both
> >>> +])
> >>> +
> >>> +check ovn-nbctl --wait=sb \
> >>> +    -- set mirror . filter=to-lport
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . filter], [0], [dnl
> >>> +to-lport
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . index], [0], [dnl
> >>> +12
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . type], [0], [dnl
> >>> +gre
> >>> +])
> >>> +
> >>> +AT_CHECK([ovn-sbctl get Mirror . Sink], [0], [dnl
> >>> +"192.168.1.13"
> >>> +])
> >>> +
> >>> +AT_CLEANUP
> >>> +])
> >>> +
> >>>   OVN_FOR_EACH_NORTHD_NO_HV([
> >>>   AT_SETUP([ACL skip hints for stateless config])
> >>>   AT_KEYWORDS([acl])
> >>> diff --git a/tests/ovn.at b/tests/ovn.at
> >>> index f8b8db4df..cd5527ea1 100644
> >>> --- a/tests/ovn.at
> >>> +++ b/tests/ovn.at
> >>> @@ -16121,6 +16121,784 @@ OVN_CLEANUP([hv1], [hv2])
> >>>   AT_CLEANUP
> >>>   ])
> >>>
> >>> +OVN_FOR_EACH_NORTHD([
> >>> +AT_SETUP([Mirror])
> >>> +AT_KEYWORDS([Mirror])
> >>> +ovn_start
> >>> +
> >>> +# Logical network:
> >>> +# One LR - R1 has switch ls1 (191.168.1.0/24) connected to it,
> >>> +# and has switch ls2 (172.16.1.0/24) connected to it.
> >>> +
> >>> +ovn-nbctl lr-add R1
> >>> +
> >>> +ovn-nbctl ls-add ls1
> >>> +ovn-nbctl ls-add ls2
> >>> +
> >>> +# Connect ls1 to R1
> >>> +ovn-nbctl lrp-add R1 ls1 00:00:00:01:02:f1 192.168.1.1/24
> >>> +ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 \
> >>> +    type=router options:router-port=ls1
> >>> addresses=\"00:00:00:01:02:f1\"
> >>> +
> >>> +# Connect ls2 to R1
> >>> +ovn-nbctl lrp-add R1 ls2 00:00:00:01:02:f2 172.16.1.1/24
> >>> +ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 \
> >>> +    type=router options:router-port=ls2
> >>> addresses=\"00:00:00:01:02:f2\"
> >>> +
> >>> +# Create logical port ls1-lp1 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp1 \
> >>> +-- lsp-set-addresses ls1-lp1 "00:00:00:01:02:03 192.168.1.2"
> >>> +
> >>> +# Create logical port ls2-lp1 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp1 \
> >>> +-- lsp-set-addresses ls2-lp1 "00:00:00:01:02:04 172.16.1.2"
> >>> +
> >>> +ovn-nbctl lsp-add ls1 ln-public
> >>> +ovn-nbctl lsp-set-type ln-public localnet
> >>> +ovn-nbctl lsp-set-addresses ln-public unknown
> >>> +ovn-nbctl lsp-set-options ln-public network_name=public
> >>> +
> >>> +# Create one hypervisor and create OVS ports corresponding to
> >>> logical ports.
> >>> +net_add n1
> >>> +
> >>> +sim_add hv1
> >>> +as hv1
> >>> +ovs-vsctl add-br br-phys -- set bridge br-phys
> >>> other-config:hwaddr=\"00:00:00:01:02:00\"
> >>> +ovn_attach n1 br-phys 192.168.1.11
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif1 -- \
> >>> +    set interface vif1 external-ids:iface-id=ls1-lp1 \
> >>> +    options:tx_pcap=hv1/vif1-tx.pcap \
> >>> +    options:rxq_pcap=hv1/vif1-rx.pcap \
> >>> +    ofport-request=1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif2 -- \
> >>> +    set interface vif2 external-ids:iface-id=ls2-lp1 \
> >>> +    options:tx_pcap=hv1/vif2-tx.pcap \
> >>> +    options:rxq_pcap=hv1/vif2-rx.pcap \
> >>> +    ofport-request=1
> >>> +
> >>> +ovs-vsctl set open . external-ids:ovn-bridge-mappings=public:br-phys
> >>> +
> >>> +# Allow some time for ovn-northd and ovn-controller to catch up.
> >>> +wait_for_ports_up
> >>> +check ovn-nbctl --wait=hv sync
> >>> +ovn-nbctl dump-flows > sbflows
> >>> +AT_CAPTURE_FILE([sbflows])
> >>> +
> >>> +for i in 1 2; do
> >>> +    : > vif$i.expected
> >>> +done
> >>> +
> >>> +net_add n2
> >>> +
> >>> +sim_add hv2
> >>> +as hv2
> >>> +ovs-vsctl add-br br-phys -- set bridge br-phys
> >>> other-config:hwaddr=\"00:00:00:02:02:00\"
> >>> +ovn_attach n2 br-phys 192.168.1.12
> >>> +
> >>> +OVN_POPULATE_ARP
> >>> +
> >>> +as hv1
> >>> +
> >>> +# test_ipv4_icmp_request INPORT ETH_SRC ETH_DST IPV4_SRC IPV4_DST
> >>> IP_CHKSUM ICMP_CHKSUM [EXP_IP_CHKSUM EXP_ICMP_CHKSUM] ENCAP_TYPE FILTER
> >>> +#
> >>> +# Causes a packet to be received on INPORT.  The packet is an ICMPv4
> >>> +# request with ETH_SRC, ETH_DST, IPV4_SRC, IPV4_DST, IP_CHSUM and
> >>> +# ICMP_CHKSUM as specified.  If EXP_IP_CHKSUM and EXP_ICMP_CHKSUM are
> >>> +# provided, then it should be the ip and icmp checksums of the packet
> >>> +# responded; otherwise, no reply is expected.
> >>> +# In the absence of an ip checksum calculation helpers, this relies
> >>> +# on the caller to provide the checksums for the ip and icmp headers.
> >>> +# XXX This should be more systematic.
> >>> +#
> >>> +# INPORT is an lport number, e.g. 11 for vif11.
> >>> +# ETH_SRC and ETH_DST are each 12 hex digits.
> >>> +# IPV4_SRC and IPV4_DST are each 8 hex digits.
> >>> +# IP_CHSUM and ICMP_CHKSUM are each 4 hex digits.
> >>> +# EXP_IP_CHSUM and EXP_ICMP_CHKSUM are each 4 hex digits.
> >>> +# ENCAP_TYPE - gre or erspan
> >>> +# FILTER - Mirror Filter - to-lport / from-lport
> >>> +test_ipv4_icmp_request() {
> >>> +    local inport=$1 eth_src=$2 eth_dst=$3 ipv4_src=$4 ipv4_dst=$5
> >>> ip_chksum=$6 icmp_chksum=$7
> >>> +    local exp_ip_chksum=$8 exp_icmp_chksum=$9
> >>> mirror_encap_type=${10} mirror_filter=${11}
> >>> +    shift; shift; shift; shift; shift; shift; shift
> >>> +    shift; shift; shift; shift;
> >>> +
> >>> +    # Use ttl to exercise section 4.2.2.9 of RFC1812
> >>> +    local ip_ttl=02
> >>> +    local icmp_id=5fbf
> >>> +    local icmp_seq=0001
> >>> +    local icmp_data=$(seq 1 56 | xargs printf "%02x")
> >>> +    local icmp_type_code_request=0800
> >>> +    local
> >>> icmp_payload=${icmp_type_code_request}${icmp_chksum}${icmp_id}${icmp_seq}${icmp_data}
> >>> +    local
> >>> packet=${eth_dst}${eth_src}08004500005400004000${ip_ttl}01${ip_chksum}${ipv4_src}${ipv4_dst}${icmp_payload}
> >>> +
> >>> +    as hv1 ovs-appctl netdev-dummy/receive vif$inport $packet
> >>> +
> >>> +    # Expect to receive the reply, if any. In same port where
> >>> packet was sent.
> >>> +    # Note: src and dst fields are expected to be reversed.
> >>> +    local icmp_type_code_response=0000
> >>> +    local reply_icmp_ttl=fe
> >>> +    local
> >>> reply_icmp_payload=${icmp_type_code_response}${exp_icmp_chksum}${icmp_id}${icmp_seq}${icmp_data}
> >>> +    local
> >>> reply=${eth_src}${eth_dst}08004500005400004000${reply_icmp_ttl}01${exp_ip_chksum}${ipv4_dst}${ipv4_src}${reply_icmp_payload}
> >>> +    echo $reply >> vif$inport.expected
> >>> +    local remote_mac=000000020200
> >>> +    local local_mac=000000010200
> >>> +    if test ${mirror_encap_type} = "gre" ; then
> >>> +        local
> >>> ipv4_gre=4500007e00004000402fb6e9c0a8010bc0a8010c2000655800000000
> >>> +        if test ${mirror_filter} = "to-lport" ; then
> >>> +            local
> >>> mirror=${remote_mac}${local_mac}0800${ipv4_gre}${reply}
> >>> +        elif test ${mirror_filter} = "from-lport" ; then
> >>> +            local
> >>> mirror=${remote_mac}${local_mac}0800${ipv4_gre}${packet}
> >>> +        fi
> >>> +    elif test ${mirror_encap_type} = "erspan" ; then
> >>> +        local ipv4_erspan=4500008600004000402fb6e1c0a8010bc0a8010c
> >>> +        local erspan_seq0=100088be000000001000000000000000
> >>> +        local erspan_seq1=100088be000000011000000000000000
> >>> +        if test ${mirror_filter} = "to-lport" ; then
> >>> +            local
> >>> mirror=${remote_mac}${local_mac}0800${ipv4_erspan}${erspan_seq0}${reply}
> >>>
> >>> +        elif test ${mirror_filter} = "from-lport" ; then
> >>> +            local
> >>> mirror=${remote_mac}${local_mac}0800${ipv4_erspan}${erspan_seq1}${packet}
> >>> +        fi
> >>> +    fi
> >>> +    echo $mirror >> br-phys_n1.expected
> >>> +
> >>> +}
> >>> +
> >>> +# Set IPs
> >>> +rtr_l2_ip=$(ip_to_hex 172 16 1 1)
> >>> +l1_ip=$(ip_to_hex 192 168 1 2)
> >>> +
> >>> +check ovn-nbctl mirror-add mirror0 gre 0 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror0
> >>> +
> >>> +# Send ping packet and check for mirrored packet of the reply
> >>> +test_ipv4_icmp_request 1 000000010203 0000000102f1 $l1_ip
> >>> $rtr_l2_ip 0000 8510 03ff 8d10 "gre" "to-lport"
> >>> +
> >>> +OVN_CHECK_PACKETS_CONTAIN([hv1/br-phys_n1-tx.pcap],
> >>> [br-phys_n1.expected])
> >>> +OVN_CHECK_PACKETS([hv1/vif1-tx.pcap], [vif1.expected])
> >>> +
> >>> +as hv1 reset_pcap_file vif1 hv1/vif1
> >>> +as hv1 reset_pcap_file br-phys_n1 hv1/br-phys_n1
> >>> +rm -f br-phys_n1.expected
> >>> +rm -f vif1.expected
> >>> +
> >>> +check ovn-nbctl set mirror . type=erspan
> >>> +
> >>> +# Send ping packet and check for mirrored packet of the reply
> >>> +test_ipv4_icmp_request 1 000000010203 0000000102f1 $l1_ip
> >>> $rtr_l2_ip 0000 8510 03ff 8d10 "erspan" "to-lport"
> >>> +
> >>> +OVN_CHECK_PACKETS_CONTAIN([hv1/br-phys_n1-tx.pcap],
> >>> [br-phys_n1.expected])
> >>> +OVN_CHECK_PACKETS([hv1/vif1-tx.pcap], [vif1.expected])
> >>> +
> >>> +as hv1 reset_pcap_file vif1 hv1/vif1
> >>> +as hv1 reset_pcap_file br-phys_n1 hv1/br-phys_n1
> >>> +rm -f br-phys_n1.expected
> >>> +rm -f vif1.expected
> >>> +
> >>> +check ovn-nbctl set mirror . filter=from-lport
> >>> +
> >>> +# Send ping packet and check for mirrored packet of the request
> >>> +test_ipv4_icmp_request 1 000000010203 0000000102f1 $l1_ip
> >>> $rtr_l2_ip 0000 8510 03ff 8d10 "erspan" "from-lport"
> >>> +
> >>> +OVN_CHECK_PACKETS_CONTAIN([hv1/br-phys_n1-tx.pcap],
> >>> [br-phys_n1.expected])
> >>> +OVN_CHECK_PACKETS([hv1/vif1-tx.pcap], [vif1.expected])
> >>> +
> >>> +as hv1 reset_pcap_file vif1 hv1/vif1
> >>> +as hv1 reset_pcap_file br-phys_n1 hv1/br-phys_n1
> >>> +rm -f br-phys_n1.expected
> >>> +rm -f vif1.expected
> >>> +
> >>> +check ovn-nbctl set mirror . type=gre
> >>> +
> >>> +# Send ping packet and check for mirrored packet of the request
> >>> +test_ipv4_icmp_request 1 000000010203 0000000102f1 $l1_ip
> >>> $rtr_l2_ip 0000 8510 03ff 8d10 "gre" "from-lport"
> >>> +
> >>> +OVN_CHECK_PACKETS_CONTAIN([hv1/br-phys_n1-tx.pcap],
> >>> [br-phys_n1.expected])
> >>> +OVN_CHECK_PACKETS([hv1/vif1-tx.pcap], [vif1.expected])
> >>> +
> >>> +echo "---------OVN NB Mirror-----"
> >>> +ovn-nbctl mirror-list
> >>> +
> >>> +echo "---------OVS Mirror----"
> >>> +ovs-vsctl list Mirror
> >>> +
> >>> +echo "-----------------------"
> >>> +
> >>> +echo "Verifying Mirror deletion in OVS"
> >>> +# Set vif1 iface-id such that OVN releases port binding
> >>> +check ovs-vsctl set interface vif1 external_ids:iface-id=foo
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +AT_CHECK([as hv1 ovs-vsctl list Mirror], [0], [dnl
> >>> +])
> >>> +
> >>> +# Set vif1 iface-id back to ls1-lp1
> >>> +check ovs-vsctl set interface vif1 external_ids:iface-id=ls1-lp1
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +OVS_WAIT_UNTIL([test $(as hv1 ovs-vsctl get Mirror mirror0 name) =
> >>> "mirror0"])
> >>> +
> >>> +# Delete vif1 so that OVN releases port binding
> >>> +check ovs-vsctl del-port br-int vif1
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +OVS_WAIT_UNTIL([test 0 = $(as hv1 ovs-vsctl list Mirror | wc -l)])
> >>> +
> >>> +OVN_CLEANUP([hv1], [hv2])
> >>> +AT_CLEANUP
> >>> +])
> >>> +
> >>> +OVN_FOR_EACH_NORTHD([
> >>> +AT_SETUP([Mirror test bulk swap attachments])
> >>> +AT_KEYWORDS([Mirror test bulk swap attachments])
> >>> +ovn_start
> >>> +
> >>> +# Logical network:
> >>> +# One LR - R1 has switch ls1 (191.168.1.0/24) connected to it,
> >>> +# and has switch ls2 (172.16.1.0/24) connected to it.
> >>> +
> >>> +ovn-nbctl lr-add R1
> >>> +
> >>> +ovn-nbctl ls-add ls1
> >>> +ovn-nbctl ls-add ls2
> >>> +
> >>> +# Connect ls1 to R1
> >>> +ovn-nbctl lrp-add R1 ls1 00:00:00:01:02:f1 192.168.1.1/24
> >>> +ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 \
> >>> +    type=router options:router-port=ls1
> >>> addresses=\"00:00:00:01:02:f1\"
> >>> +
> >>> +# Connect ls2 to R1
> >>> +ovn-nbctl lrp-add R1 ls2 00:00:00:01:02:f2 172.16.1.1/24
> >>> +ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 \
> >>> +    type=router options:router-port=ls2
> >>> addresses=\"00:00:00:01:02:f2\"
> >>> +
> >>> +# Create logical port ls1-lp1 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp1 \
> >>> +-- lsp-set-addresses ls1-lp1 "00:00:00:01:02:03 192.168.1.2"
> >>> +
> >>> +# Create logical port ls1-lp2 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp2 \
> >>> +-- lsp-set-addresses ls1-lp2 "00:00:00:01:03:03 192.168.1.3"
> >>> +
> >>> +# Create logical port ls2-lp1 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp1 \
> >>> +-- lsp-set-addresses ls2-lp1 "00:00:00:01:02:04 172.16.1.2"
> >>> +
> >>> +# Create logical port ls2-lp2 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp2 \
> >>> +-- lsp-set-addresses ls2-lp2 "00:00:00:01:03:04 172.16.1.3"
> >>> +
> >>> +ovn-nbctl lsp-add ls1 ln-public
> >>> +ovn-nbctl lsp-set-type ln-public localnet
> >>> +ovn-nbctl lsp-set-addresses ln-public unknown
> >>> +ovn-nbctl lsp-set-options ln-public network_name=public
> >>> +
> >>> +# Create one hypervisor and create OVS ports corresponding to
> >>> logical ports.
> >>> +net_add n1
> >>> +
> >>> +sim_add hv1
> >>> +as hv1
> >>> +ovs-vsctl add-br br-phys -- set bridge br-phys
> >>> other-config:hwaddr=\"00:00:00:01:02:00\"
> >>> +ovn_attach n1 br-phys 192.168.1.11
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif1 -- \
> >>> +    set interface vif1 external-ids:iface-id=ls1-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif2 -- \
> >>> +    set interface vif2 external-ids:iface-id=ls2-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif3 -- \
> >>> +    set interface vif3 external-ids:iface-id=ls1-lp2
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif4 -- \
> >>> +    set interface vif4 external-ids:iface-id=ls2-lp2
> >>> +
> >>> +ovs-vsctl set open . external-ids:ovn-bridge-mappings=public:br-phys
> >>> +
> >>> +# Allow some time for ovn-northd and ovn-controller to catch up.
> >>> +wait_for_ports_up
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +check ovn-nbctl mirror-add mirror0 gre 0 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp1 mirror0
> >>> +
> >>> +check ovn-nbctl mirror-add mirror1 gre 1 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp2 mirror1
> >>> +
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +as hv1
> >>> +orig1=$(ovs-vsctl get Mirror mirror0 select_dst_port)
> >>> +orig2=$(ovs-vsctl get Mirror mirror1 select_dst_port)
> >>> +
> >>> +# Equal detaches and attaches
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/pause
> >>> +check ovn-nbctl lsp-detach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl lsp-detach-mirror ls2-lp1 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp2 mirror0
> >>> +
> >>> +check ovn-nbctl lsp-detach-mirror ls1-lp2 mirror1
> >>> +check ovn-nbctl lsp-detach-mirror ls2-lp2 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp1 mirror1
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/resume
> >>> +
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +as hv1
> >>> +new1=$(ovs-vsctl get Mirror mirror0 select_dst_port)
> >>> +new2=$(ovs-vsctl get Mirror mirror1 select_dst_port)
> >>> +
> >>> +AT_CHECK([test "$orig1" = "$new2"], [0], [])
> >>> +
> >>> +AT_CHECK([test "$orig2" = "$new1"], [0], [])
> >>> +
> >>> +OVN_CLEANUP([hv1])
> >>> +AT_CLEANUP
> >>> +])
> >>> +
> >>> +OVN_FOR_EACH_NORTHD([
> >>> +AT_SETUP([Mirror test bulk attach multiple])
> >>> +AT_KEYWORDS([Mirror test bulk attach multiple])
> >>> +ovn_start
> >>> +
> >>> +# Logical network:
> >>> +# One LR - R1 has switch ls1 (191.168.1.0/24) connected to it,
> >>> +# and has switch ls2 (172.16.1.0/24) connected to it.
> >>> +
> >>> +ovn-nbctl lr-add R1
> >>> +
> >>> +ovn-nbctl ls-add ls1
> >>> +ovn-nbctl ls-add ls2
> >>> +
> >>> +# Connect ls1 to R1
> >>> +ovn-nbctl lrp-add R1 ls1 00:00:00:01:02:f1 192.168.1.1/24
> >>> +ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 \
> >>> +    type=router options:router-port=ls1
> >>> addresses=\"00:00:00:01:02:f1\"
> >>> +
> >>> +# Connect ls2 to R1
> >>> +ovn-nbctl lrp-add R1 ls2 00:00:00:01:02:f2 172.16.1.1/24
> >>> +ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 \
> >>> +    type=router options:router-port=ls2
> >>> addresses=\"00:00:00:01:02:f2\"
> >>> +
> >>> +# Create logical port ls1-lp1 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp1 \
> >>> +-- lsp-set-addresses ls1-lp1 "00:00:00:01:02:03 192.168.1.2"
> >>> +
> >>> +# Create logical port ls1-lp2 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp2 \
> >>> +-- lsp-set-addresses ls1-lp2 "00:00:00:01:03:03 192.168.1.3"
> >>> +
> >>> +# Create logical port ls2-lp1 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp1 \
> >>> +-- lsp-set-addresses ls2-lp1 "00:00:00:01:02:04 172.16.1.2"
> >>> +
> >>> +# Create logical port ls2-lp2 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp2 \
> >>> +-- lsp-set-addresses ls2-lp2 "00:00:00:01:03:04 172.16.1.3"
> >>> +
> >>> +ovn-nbctl lsp-add ls1 ln-public
> >>> +ovn-nbctl lsp-set-type ln-public localnet
> >>> +ovn-nbctl lsp-set-addresses ln-public unknown
> >>> +ovn-nbctl lsp-set-options ln-public network_name=public
> >>> +
> >>> +# Create one hypervisor and create OVS ports corresponding to
> >>> logical ports.
> >>> +net_add n1
> >>> +
> >>> +sim_add hv1
> >>> +as hv1
> >>> +ovs-vsctl add-br br-phys -- set bridge br-phys
> >>> other-config:hwaddr=\"00:00:00:01:02:00\"
> >>> +ovn_attach n1 br-phys 192.168.1.11
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif1 -- \
> >>> +    set interface vif1 external-ids:iface-id=ls1-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif2 -- \
> >>> +    set interface vif2 external-ids:iface-id=ls2-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif3 -- \
> >>> +    set interface vif3 external-ids:iface-id=ls1-lp2
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif4 -- \
> >>> +    set interface vif4 external-ids:iface-id=ls2-lp2
> >>> +
> >>> +ovs-vsctl set open . external-ids:ovn-bridge-mappings=public:br-phys
> >>> +
> >>> +# Allow some time for ovn-northd and ovn-controller to catch up.
> >>> +wait_for_ports_up
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +check ovn-nbctl mirror-add mirror0 gre 0 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp1 mirror0
> >>> +
> >>> +check ovn-nbctl mirror-add mirror1 gre 1 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp2 mirror1
> >>> +
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +as hv1
> >>> +orig1=$(ovs-vsctl get Mirror mirror0 select_dst_port)
> >>> +orig2=$(ovs-vsctl get Mirror mirror1 select_dst_port)
> >>> +
> >>> +check ovn-nbctl mirror-del
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +check ovn-nbctl mirror-add mirror0 gre 0 to-lport 192.168.1.12
> >>> +check ovn-nbctl mirror-add mirror1 gre 1 to-lport 192.168.1.12
> >>> +
> >>> +# Attaches multiple mirrors
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/pause
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp1 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp2 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror1
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/resume
> >>> +
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +as hv1
> >>> +new1=$(ovs-vsctl get Mirror mirror0 select_dst_port)
> >>> +new2=$(ovs-vsctl get Mirror mirror1 select_dst_port)
> >>> +
> >>> +AT_CHECK([test "$orig1" = "$new1"], [0], [])
> >>> +
> >>> +AT_CHECK([test "$orig2" = "$new2"], [0], [])
> >>> +
> >>> +OVN_CLEANUP([hv1])
> >>> +AT_CLEANUP
> >>> +])
> >>> +
> >>> +OVN_FOR_EACH_NORTHD([
> >>> +AT_SETUP([Mirror test bulk more detach and less attach])
> >>> +AT_KEYWORDS([Mirror test bulk more detach and less attach])
> >>> +ovn_start
> >>> +
> >>> +# Logical network:
> >>> +# One LR - R1 has switch ls1 (191.168.1.0/24) connected to it,
> >>> +# and has switch ls2 (172.16.1.0/24) connected to it.
> >>> +
> >>> +ovn-nbctl lr-add R1
> >>> +
> >>> +ovn-nbctl ls-add ls1
> >>> +ovn-nbctl ls-add ls2
> >>> +
> >>> +# Connect ls1 to R1
> >>> +ovn-nbctl lrp-add R1 ls1 00:00:00:01:02:f1 192.168.1.1/24
> >>> +ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 \
> >>> +    type=router options:router-port=ls1
> >>> addresses=\"00:00:00:01:02:f1\"
> >>> +
> >>> +# Connect ls2 to R1
> >>> +ovn-nbctl lrp-add R1 ls2 00:00:00:01:02:f2 172.16.1.1/24
> >>> +ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 \
> >>> +    type=router options:router-port=ls2
> >>> addresses=\"00:00:00:01:02:f2\"
> >>> +
> >>> +# Create logical port ls1-lp1 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp1 \
> >>> +-- lsp-set-addresses ls1-lp1 "00:00:00:01:02:03 192.168.1.2"
> >>> +
> >>> +# Create logical port ls1-lp2 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp2 \
> >>> +-- lsp-set-addresses ls1-lp2 "00:00:00:01:03:03 192.168.1.3"
> >>> +
> >>> +# Create logical port ls2-lp1 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp1 \
> >>> +-- lsp-set-addresses ls2-lp1 "00:00:00:01:02:04 172.16.1.2"
> >>> +
> >>> +# Create logical port ls2-lp2 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp2 \
> >>> +-- lsp-set-addresses ls2-lp2 "00:00:00:01:03:04 172.16.1.3"
> >>> +
> >>> +ovn-nbctl lsp-add ls1 ln-public
> >>> +ovn-nbctl lsp-set-type ln-public localnet
> >>> +ovn-nbctl lsp-set-addresses ln-public unknown
> >>> +ovn-nbctl lsp-set-options ln-public network_name=public
> >>> +
> >>> +# Create one hypervisor and create OVS ports corresponding to
> >>> logical ports.
> >>> +net_add n1
> >>> +
> >>> +sim_add hv1
> >>> +as hv1
> >>> +ovs-vsctl add-br br-phys -- set bridge br-phys
> >>> other-config:hwaddr=\"00:00:00:01:02:00\"
> >>> +ovn_attach n1 br-phys 192.168.1.11
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif1 -- \
> >>> +    set interface vif1 external-ids:iface-id=ls1-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif2 -- \
> >>> +    set interface vif2 external-ids:iface-id=ls2-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif3 -- \
> >>> +    set interface vif3 external-ids:iface-id=ls1-lp2
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif4 -- \
> >>> +    set interface vif4 external-ids:iface-id=ls2-lp2
> >>> +
> >>> +ovs-vsctl set open . external-ids:ovn-bridge-mappings=public:br-phys
> >>> +
> >>> +# Allow some time for ovn-northd and ovn-controller to catch up.
> >>> +wait_for_ports_up
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +check ovn-nbctl mirror-add mirror0 gre 0 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl --wait=hv sync
> >>> +origA=$(ovs-vsctl get Mirror mirror0 select_dst_port)
> >>> +
> >>> +check ovn-nbctl mirror-add mirror1 gre 1 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror1
> >>> +check ovn-nbctl --wait=hv sync
> >>> +origB=$(ovs-vsctl get Mirror mirror1 select_dst_port)
> >>> +
> >>> +check ovn-nbctl mirror-del
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +check ovn-nbctl mirror-add mirror0 gre 0 to-lport 192.168.1.12
> >>> +check ovn-nbctl mirror-add mirror1 gre 1 to-lport 192.168.1.12
> >>> +
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp2 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror0
> >>> +
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +# Detaches more than attaches
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/pause
> >>> +check ovn-nbctl lsp-detach-mirror ls1-lp1 mirror1
> >>> +check ovn-nbctl lsp-detach-mirror ls1-lp2 mirror0
> >>> +check ovn-nbctl lsp-detach-mirror ls2-lp2 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror1
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/resume
> >>> +
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +as hv1
> >>> +new1=$(ovs-vsctl get Mirror mirror0 select_dst_port)
> >>> +new2=$(ovs-vsctl get Mirror mirror1 select_dst_port)
> >>> +
> >>> +AT_CHECK([test "$origA" = "$new1"], [0], [])
> >>> +
> >>> +AT_CHECK([test "$origB" = "$new2"], [0], [])
> >>> +
> >>> +OVN_CLEANUP([hv1])
> >>> +AT_CLEANUP
> >>> +])
> >>> +
> >>> +OVN_FOR_EACH_NORTHD([
> >>> +AT_SETUP([Mirror test bulk attach more than detach])
> >>> +AT_KEYWORDS([Mirror test bulk attach more than detach])
> >>> +ovn_start
> >>> +
> >>> +# Logical network:
> >>> +# One LR - R1 has switch ls1 (191.168.1.0/24) connected to it,
> >>> +# and has switch ls2 (172.16.1.0/24) connected to it.
> >>> +
> >>> +ovn-nbctl lr-add R1
> >>> +
> >>> +ovn-nbctl ls-add ls1
> >>> +ovn-nbctl ls-add ls2
> >>> +
> >>> +# Connect ls1 to R1
> >>> +ovn-nbctl lrp-add R1 ls1 00:00:00:01:02:f1 192.168.1.1/24
> >>> +ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 \
> >>> +    type=router options:router-port=ls1
> >>> addresses=\"00:00:00:01:02:f1\"
> >>> +
> >>> +# Connect ls2 to R1
> >>> +ovn-nbctl lrp-add R1 ls2 00:00:00:01:02:f2 172.16.1.1/24
> >>> +ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 \
> >>> +    type=router options:router-port=ls2
> >>> addresses=\"00:00:00:01:02:f2\"
> >>> +
> >>> +# Create logical port ls1-lp1 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp1 \
> >>> +-- lsp-set-addresses ls1-lp1 "00:00:00:01:02:03 192.168.1.2"
> >>> +
> >>> +# Create logical port ls1-lp2 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp2 \
> >>> +-- lsp-set-addresses ls1-lp2 "00:00:00:01:03:03 192.168.1.3"
> >>> +
> >>> +# Create logical port ls2-lp1 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp1 \
> >>> +-- lsp-set-addresses ls2-lp1 "00:00:00:01:02:04 172.16.1.2"
> >>> +
> >>> +# Create logical port ls2-lp2 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp2 \
> >>> +-- lsp-set-addresses ls2-lp2 "00:00:00:01:03:04 172.16.1.3"
> >>> +
> >>> +ovn-nbctl lsp-add ls1 ln-public
> >>> +ovn-nbctl lsp-set-type ln-public localnet
> >>> +ovn-nbctl lsp-set-addresses ln-public unknown
> >>> +ovn-nbctl lsp-set-options ln-public network_name=public
> >>> +
> >>> +# Create one hypervisor and create OVS ports corresponding to
> >>> logical ports.
> >>> +net_add n1
> >>> +
> >>> +sim_add hv1
> >>> +as hv1
> >>> +ovs-vsctl add-br br-phys -- set bridge br-phys
> >>> other-config:hwaddr=\"00:00:00:01:02:00\"
> >>> +ovn_attach n1 br-phys 192.168.1.11
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif1 -- \
> >>> +    set interface vif1 external-ids:iface-id=ls1-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif2 -- \
> >>> +    set interface vif2 external-ids:iface-id=ls2-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif3 -- \
> >>> +    set interface vif3 external-ids:iface-id=ls1-lp2
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif4 -- \
> >>> +    set interface vif4 external-ids:iface-id=ls2-lp2
> >>> +
> >>> +ovs-vsctl set open . external-ids:ovn-bridge-mappings=public:br-phys
> >>> +
> >>> +# Allow some time for ovn-northd and ovn-controller to catch up.
> >>> +wait_for_ports_up
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +check ovn-nbctl mirror-add mirror0 gre 0 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp1 mirror0
> >>> +
> >>> +check ovn-nbctl mirror-add mirror1 gre 1 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp2 mirror1
> >>> +
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +as hv1
> >>> +orig1=$(ovs-vsctl get Mirror mirror0 select_dst_port)
> >>> +orig2=$(ovs-vsctl get Mirror mirror1 select_dst_port)
> >>> +
> >>> +check ovn-nbctl lsp-detach-mirror ls2-lp1 mirror0
> >>> +check ovn-nbctl lsp-detach-mirror ls2-lp2 mirror1
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +# Attaches more than detaches
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/pause
> >>> +check ovn-nbctl lsp-detach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl lsp-detach-mirror ls1-lp2 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp2 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp1 mirror1
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/resume
> >>> +
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +as hv1
> >>> +new1=$(ovs-vsctl get Mirror mirror0 select_dst_port)
> >>> +new2=$(ovs-vsctl get Mirror mirror1 select_dst_port)
> >>> +
> >>> +AT_CHECK([test "$orig1" = "$new2"], [0], [])
> >>> +
> >>> +AT_CHECK([test "$orig2" = "$new1"], [0], [])
> >>> +
> >>> +OVN_CLEANUP([hv1])
> >>> +AT_CLEANUP
> >>> +])
> >>> +
> >>> +OVN_FOR_EACH_NORTHD([
> >>> +AT_SETUP([Mirror test bulk detach multiple])
> >>> +AT_KEYWORDS([Mirror test bulk detach multiple])
> >>> +ovn_start
> >>> +
> >>> +# Logical network:
> >>> +# One LR - R1 has switch ls1 (191.168.1.0/24) connected to it,
> >>> +# and has switch ls2 (172.16.1.0/24) connected to it.
> >>> +
> >>> +ovn-nbctl lr-add R1
> >>> +
> >>> +ovn-nbctl ls-add ls1
> >>> +ovn-nbctl ls-add ls2
> >>> +
> >>> +# Connect ls1 to R1
> >>> +ovn-nbctl lrp-add R1 ls1 00:00:00:01:02:f1 192.168.1.1/24
> >>> +ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 \
> >>> +    type=router options:router-port=ls1
> >>> addresses=\"00:00:00:01:02:f1\"
> >>> +
> >>> +# Connect ls2 to R1
> >>> +ovn-nbctl lrp-add R1 ls2 00:00:00:01:02:f2 172.16.1.1/24
> >>> +ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 \
> >>> +    type=router options:router-port=ls2
> >>> addresses=\"00:00:00:01:02:f2\"
> >>> +
> >>> +# Create logical port ls1-lp1 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp1 \
> >>> +-- lsp-set-addresses ls1-lp1 "00:00:00:01:02:03 192.168.1.2"
> >>> +
> >>> +# Create logical port ls1-lp2 in ls1
> >>> +ovn-nbctl lsp-add ls1 ls1-lp2 \
> >>> +-- lsp-set-addresses ls1-lp2 "00:00:00:01:03:03 192.168.1.3"
> >>> +
> >>> +# Create logical port ls2-lp1 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp1 \
> >>> +-- lsp-set-addresses ls2-lp1 "00:00:00:01:02:04 172.16.1.2"
> >>> +
> >>> +# Create logical port ls2-lp2 in ls2
> >>> +ovn-nbctl lsp-add ls2 ls2-lp2 \
> >>> +-- lsp-set-addresses ls2-lp2 "00:00:00:01:03:04 172.16.1.3"
> >>> +
> >>> +ovn-nbctl lsp-add ls1 ln-public
> >>> +ovn-nbctl lsp-set-type ln-public localnet
> >>> +ovn-nbctl lsp-set-addresses ln-public unknown
> >>> +ovn-nbctl lsp-set-options ln-public network_name=public
> >>> +
> >>> +# Create one hypervisor and create OVS ports corresponding to
> >>> logical ports.
> >>> +net_add n1
> >>> +
> >>> +sim_add hv1
> >>> +as hv1
> >>> +ovs-vsctl add-br br-phys -- set bridge br-phys
> >>> other-config:hwaddr=\"00:00:00:01:02:00\"
> >>> +ovn_attach n1 br-phys 192.168.1.11
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif1 -- \
> >>> +    set interface vif1 external-ids:iface-id=ls1-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif2 -- \
> >>> +    set interface vif2 external-ids:iface-id=ls2-lp1
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif3 -- \
> >>> +    set interface vif3 external-ids:iface-id=ls1-lp2
> >>> +
> >>> +ovs-vsctl -- add-port br-int vif4 -- \
> >>> +    set interface vif4 external-ids:iface-id=ls2-lp2
> >>> +
> >>> +ovs-vsctl set open . external-ids:ovn-bridge-mappings=public:br-phys
> >>> +
> >>> +# Allow some time for ovn-northd and ovn-controller to catch up.
> >>> +wait_for_ports_up
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +check ovn-nbctl mirror-add mirror0 gre 0 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp1 mirror0
> >>> +
> >>> +check ovn-nbctl mirror-add mirror1 gre 1 to-lport 192.168.1.12
> >>> +check ovn-nbctl lsp-attach-mirror ls1-lp2 mirror1
> >>> +check ovn-nbctl lsp-attach-mirror ls2-lp2 mirror1
> >>> +
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +# Detaches all
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/pause
> >>> +check ovn-nbctl lsp-detach-mirror ls1-lp1 mirror0
> >>> +check ovn-nbctl lsp-detach-mirror ls2-lp1 mirror0
> >>> +check ovn-nbctl lsp-detach-mirror ls1-lp2 mirror1
> >>> +check ovn-nbctl lsp-detach-mirror ls2-lp2 mirror1
> >>> +check as hv1 ovn-appctl -t ovn-controller debug/resume
> >>> +check ovn-nbctl --wait=hv sync
> >>> +
> >>> +OVS_WAIT_UNTIL([test 0 = $(as hv1 ovs-vsctl list Mirror | wc -l)])
> >>> +
> >>> +OVN_CLEANUP([hv1])
> >>> +AT_CLEANUP
> >>> +])
> >>>
> >>>   OVN_FOR_EACH_NORTHD([
> >>>   AT_SETUP([Port Groups])
> >>> diff --git a/utilities/ovn-nbctl.c b/utilities/ovn-nbctl.c
> >>> index 811468dc6..af2e61435 100644
> >>> --- a/utilities/ovn-nbctl.c
> >>> +++ b/utilities/ovn-nbctl.c
> >>> @@ -271,6 +271,19 @@ QoS commands:\n\
> >>>                               remove QoS rules from SWITCH\n\
> >>>     qos-list SWITCH           print QoS rules for SWITCH\n\
> >>>   \n\
> >>> +Mirror commands:\n\
> >>> +  mirror-add NAME TYPE INDEX FILTER IP\n\
> >>> +                            add a mirror with given name\n\
> >>> +                            specify TYPE 'gre' or 'erspan'\n\
> >>> +                            specify the tunnel INDEX value\n\
> >>> +                                (indicates key if GRE\n\
> >>> +                                 erpsan_idx if ERSPAN)\n\
> >>> +                            specify FILTER for mirroring selection\n\
> >>> +                                'to-lport' / 'from-lport' / 'both'\n\
> >>> +                            specify Sink / Destination i.e. Remote
> >>> IP\n\
> >>> +  mirror-del [NAME]         remove mirrors\n\
> >>> +  mirror-list               print mirrors\n\
> >>> +\n\
> >>>   Meter commands:\n\
> >>>     [--fair]\n\
> >>>     meter-add NAME ACTION RATE UNIT [BURST]\n\
> >>> @@ -311,6 +324,8 @@ Logical switch port commands:\n\
> >>>                               set dhcpv6 options for PORT\n\
> >>>     lsp-get-dhcpv6-options PORT  get the dhcpv6 options for PORT\n\
> >>>     lsp-get-ls PORT           get the logical switch which the port
> >>> belongs to\n\
> >>> +  lsp-attach-mirror PORT MIRROR   attach source PORT to MIRROR\n\
> >>> +  lsp-detach-mirror PORT MIRROR   detach source PORT from MIRROR\n\
> >>>   \n\
> >>>   Forwarding group commands:\n\
> >>>     [--liveness]\n\
> >>> @@ -1685,6 +1700,130 @@ nbctl_pre_lsp_type(struct ctl_context *ctx)
> >>>       ovsdb_idl_add_column(ctx->idl,
> >>> &nbrec_logical_switch_port_col_type);
> >>>   }
> >>>
> >>> +static void
> >>> +nbctl_pre_lsp_mirror(struct ctl_context *ctx)
> >>> +{
> >>> +    ovsdb_idl_add_column(ctx->idl,
> >>> &nbrec_logical_switch_port_col_name);
> >>> +    ovsdb_idl_add_column(ctx->idl,
> >>> + &nbrec_logical_switch_port_col_mirror_rules);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_name);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_src);
> >>> +}
> >>> +
> >>> +static int
> >>> +mirror_cmp(const void *mirror1_, const void *mirror2_)
> >>> +{
> >>> +    const struct nbrec_mirror *const *mirror_1 = mirror1_;
> >>> +    const struct nbrec_mirror *const *mirror_2 = mirror2_;
> >>> +
> >>> +    const struct nbrec_mirror *mirror1 = *mirror_1;
> >>> +    const struct nbrec_mirror *mirror2 = *mirror_2;
> >>> +
> >>> +    return strcmp(mirror1->name,mirror2->name);
> >>> +}
> >>> +
> >>> +static char * OVS_WARN_UNUSED_RESULT
> >>> +mirror_by_name_or_uuid(struct ctl_context *ctx, const char *id,
> >>> +                    bool must_exist,
> >>> +                    const struct nbrec_mirror **mirror_p)
> >>> +{
> >>> +    const struct nbrec_mirror *mirror = NULL;
> >>> +    *mirror_p = NULL;
> >>> +
> >>> +    struct uuid mirror_uuid;
> >>> +    bool is_uuid = uuid_from_string(&mirror_uuid, id);
> >>> +    if (is_uuid) {
> >>> +        mirror = nbrec_mirror_get_for_uuid(ctx->idl, &mirror_uuid);
> >>> +    }
> >>> +
> >>> +    if (!mirror) {
> >>> +        NBREC_MIRROR_FOR_EACH (mirror, ctx->idl) {
> >>> +            if (!strcmp(mirror->name, id)) {
> >>> +                break;
> >>> +            }
> >>> +        }
> >>> +    }
> >>> +
> >>> +    if (!mirror && must_exist) {
> >>> +        return xasprintf("%s: mirror %s not found",
> >>> +                         id, is_uuid ? "UUID" : "name");
> >>> +    }
> >>> +
> >>> +    *mirror_p = mirror;
> >>> +    return NULL;
> >>> +}
> >>> +
> >>> +static void
> >>> +nbctl_lsp_attach_mirror(struct ctl_context *ctx)
> >>> +{
> >>> +    const char *port = ctx->argv[1];
> >>> +    const char *mirror_name = ctx->argv[2];
> >>> +    const struct nbrec_logical_switch_port *lsp = NULL;
> >>> +    const struct nbrec_mirror *mirror;
> >>> +
> >>> +    char *error;
> >>> +
> >>> +    error = lsp_by_name_or_uuid(ctx, port, true, &lsp);
> >>> +    if (error) {
> >>> +        ctx->error = error;
> >>> +        return;
> >>> +    }
> >>> +
> >>> +
> >>> +    /*check if a mirror rule actually exists on that name or not*/
> >>> +    error = mirror_by_name_or_uuid(ctx, mirror_name, true, &mirror);
> >>> +    if (error) {
> >>> +        ctx->error = error;
> >>> +        return;
> >>> +    }
> >>> +
> >>> +    /* Check if same mirror rule already exists for the lsp */
> >>> +    for (size_t i = 0; i < lsp->n_mirror_rules; i++) {
> >>> +        if (!mirror_cmp(&lsp->mirror_rules[i], &mirror)) {
> >>> +            bool may_exist = shash_find(&ctx->options,
> >>> "--may-exist") != NULL;
> >>> +            if (!may_exist) {
> >>> +                ctl_error(ctx, "Same mirror already existed on the
> >>> lsp %s.",
> >>> +                          ctx->argv[1]);
> >>> +                return;
> >>> +            }
> >>> +            return;
> >>> +        }
> >>> +    }
> >>> +
> >>> + nbrec_logical_switch_port_update_mirror_rules_addvalue(lsp, mirror);
> >>> +    nbrec_mirror_update_src_addvalue(mirror,lsp);
> >>> +
> >>> +}
> >>> +
> >>> +static void
> >>> +nbctl_lsp_detach_mirror(struct ctl_context *ctx)
> >>> +{
> >>> +    const char *port = ctx->argv[1];
> >>> +    const char *mirror_name = ctx->argv[2];
> >>> +    const struct nbrec_logical_switch_port *lsp = NULL;
> >>> +    const struct nbrec_mirror *mirror;
> >>> +
> >>> +    char *error;
> >>> +
> >>> +    error = lsp_by_name_or_uuid(ctx, port, true, &lsp);
> >>> +    if (error) {
> >>> +        ctx->error = error;
> >>> +        return;
> >>> +    }
> >>> +
> >>> +
> >>> +    /*check if a mirror rule actually exists on that name or not*/
> >>> +    error = mirror_by_name_or_uuid(ctx, mirror_name, true, &mirror);
> >>> +    if (error) {
> >>> +        ctx->error = error;
> >>> +        return;
> >>> +    }
> >>> +
> >>> + nbrec_logical_switch_port_update_mirror_rules_delvalue(lsp, mirror);
> >>> +    nbrec_mirror_update_src_delvalue(mirror,lsp);
> >>> +
> >>> +}
> >>> +
> >>>   static void
> >>>   nbctl_lsp_set_type(struct ctl_context *ctx)
> >>>   {
> >>> @@ -7241,6 +7380,211 @@ cmd_ha_ch_grp_set_chassis_prio(struct
> >>> ctl_context *ctx)
> >>>       nbrec_ha_chassis_set_priority(ha_chassis, priority);
> >>>   }
> >>>
> >>> +static char * OVS_WARN_UNUSED_RESULT
> >>> +parse_filter(const char *arg, const char **selection_p)
> >>> +{
> >>> +    /* Validate selection.  Only require the first letter. */
> >>> +    if (arg[0] == 't') {
> >>> +        *selection_p = "to-lport";
> >>> +    } else if (arg[0] == 'f') {
> >>> +        *selection_p = "from-lport";
> >>> +    } else if (arg[0] == 'b') {
> >>> +        *selection_p = "both";
> >>> +    } else {
> >>> +        *selection_p = NULL;
> >>> +        return xasprintf("%s: selection must be \"to-lport\" or "
> >>> +                         "\"from-lport\" or \"both\" ", arg);
> >>> +    }
> >>> +    return NULL;
> >>> +}
> >>> +
> >>> +static char * OVS_WARN_UNUSED_RESULT
> >>> +parse_type(const char *arg, const char **type_p)
> >>> +{
> >>> +    /* Validate type.  Only require the first letter. */
> >>> +    if (arg[0] == 'g') {
> >>> +        *type_p = "gre";
> >>> +    } else if (arg[0] == 'e') {
> >>> +        *type_p = "erspan";
> >>> +    } else {
> >>> +        *type_p = NULL;
> >>> +        return xasprintf("%s: type must be \"gre\" or "
> >>> +                         "\"erspan\"", arg);
> >>> +    }
> >>> +    return NULL;
> >>> +}
> >>> +
> >>> +static void
> >>> +nbctl_pre_mirror_add(struct ctl_context *ctx)
> >>> +{
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_name);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_filter);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_index);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_sink);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_type);
> >>> +}
> >>> +
> >>> +static void
> >>> +nbctl_mirror_add(struct ctl_context *ctx)
> >>> +{
> >>> +    const char *filter = NULL;
> >>> +    const char *sink_ip = NULL;
> >>> +    const char *type = NULL;
> >>> +    const char *name = NULL;
> >>> +    char *new_sink_ip = NULL;
> >>> +    int64_t index;
> >>> +    char *error = NULL;
> >>> +    const struct nbrec_mirror *mirror_check = NULL;
> >>> +
> >>> +    /* Mirror Name */
> >>> +    name = ctx->argv[1];
> >>> +    NBREC_MIRROR_FOR_EACH (mirror_check, ctx->idl) {
> >>> +        if (!strcmp(mirror_check->name, name)) {
> >>> +            ctl_error(ctx, "Mirror with %s name already exists.",
> >>> +                      name);
> >>> +            return;
> >>> +        }
> >>> +    }
> >>> +
> >>> +    /* Tunnel Type - GRE/ERSPAN */
> >>> +    error = parse_type(ctx->argv[2], &type);
> >>> +    if (error) {
> >>> +        ctx->error = error;
> >>> +        return;
> >>> +    }
> >>> +
> >>> +    /* tunnel index / GRE key / ERSPAN idx */
> >>> +    index = atoi(ctx->argv[3]);
> >> Shouldn't we validate the input is an actual number?
> >>
> >>> +
> >>> +    /* Filter for mirroring */
> >>> +    error = parse_filter(ctx->argv[4], &filter);
> >>> +    if (error) {
> >>> +        ctx->error = error;
> >>> +        return;
> >>> +    }
> >>> +
> >>> +    /* Destination / Sink details */
> >>> +    sink_ip = ctx->argv[5];
> >>> +
> >>> +    /* check if it is a valid ip */
> >>> +    new_sink_ip = normalize_ipv4_addr_str(sink_ip);
> >>> +    if (!new_sink_ip) {
> >>> +        new_sink_ip = normalize_ipv6_addr_str(sink_ip);
> >>> +    }
> >>> +
> >>> +    if (new_sink_ip) {
> >>> +        free(new_sink_ip);
> >>> +    } else {
> >>> +        ctl_error(ctx, "Invalid sink ip: %s", sink_ip);
> >>> +        return;
> >>> +    }
> >>> +
> >>> +    /* Create the mirror. */
> >>> +    struct nbrec_mirror *mirror = nbrec_mirror_insert(ctx->txn);
> >>> +    nbrec_mirror_set_name(mirror, name);
> >>> +    nbrec_mirror_set_index(mirror, index);
> >>> +    nbrec_mirror_set_filter(mirror, filter);
> >>> +    nbrec_mirror_set_type(mirror, type);
> >>> +    nbrec_mirror_set_sink(mirror, sink_ip);
> >>> +
> >>> +}
> >>> +
> >>> +static void
> >>> +nbctl_pre_mirror_del(struct ctl_context *ctx)
> >>> +{
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_name);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_src);
> >>> +}
> >>> +
> >>> +static void
> >>> +nbctl_mirror_del(struct ctl_context *ctx)
> >>> +{
> >>> +    const struct nbrec_mirror *mirror, *next;
> >>> +
> >>> +    /* If a name is not specified, delete all mirrors. */
> >>> +    if (ctx->argc == 1) {
> >>> +        NBREC_MIRROR_FOR_EACH_SAFE (mirror, next, ctx->idl) {
> >>> +            nbrec_mirror_delete(mirror);
> >>> +        }
> >>> +        return;
> >>> +    }
> >>> +
> >>> +    /* Remove the matching mirror. */
> >>> +    NBREC_MIRROR_FOR_EACH (mirror, ctx->idl) {
> >>> +        if (strcmp(ctx->argv[1], mirror->name)) {
> >>> +            continue;
> >>> +        }
> >>> +        nbrec_mirror_delete(mirror);
> >>> +        return;
> >>> +    }
> >>> +}
> >>> +
> >>> +static void
> >>> +nbctl_pre_mirror_list(struct ctl_context *ctx)
> >>> +{
> >>> +    ovsdb_idl_add_column(ctx->idl,
> >>> &nbrec_logical_switch_port_col_name);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_name);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_filter);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_index);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_sink);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_type);
> >>> +    ovsdb_idl_add_column(ctx->idl, &nbrec_mirror_col_src);
> >>> +}
> >>> +
> >>> +static void
> >>> +nbctl_mirror_list(struct ctl_context *ctx)
> >>> +{
> >>> +
> >>> +    const struct nbrec_mirror **mirrors = NULL;
> >>> +    const struct nbrec_mirror *mirror;
> >>> +    size_t n_capacity = 0;
> >>> +    size_t n_mirrors = 0;
> >>> +
> >>> +    NBREC_MIRROR_FOR_EACH (mirror, ctx->idl) {
> >>> +        if (n_mirrors == n_capacity) {
> >>> +            mirrors = x2nrealloc(mirrors, &n_capacity, sizeof
> >>> *mirrors);
> >>> +        }
> >>> +
> >>> +        mirrors[n_mirrors] = mirror;
> >>> +        n_mirrors++;
> >>> +    }
> >>> +
> >>> +    if (n_mirrors) {
> >>> +        qsort(mirrors, n_mirrors, sizeof *mirrors, mirror_cmp);
> >>> +    }
> >>> +
> >>> +    for (size_t i = 0; i < n_mirrors; i++) {
> >>> +        mirror = mirrors[i];
> >>> +        ds_put_format(&ctx->output, "%s:\n", mirror->name);
> >>> +        /* print all the values */
> >>> +        ds_put_format(&ctx->output, "  Type     : %s\n",
> >>> mirror->type);
> >>> +        ds_put_format(&ctx->output, "  Sink     : %s\n",
> >>> mirror->sink);
> >>> +        ds_put_format(&ctx->output, "  Filter   : %s\n",
> >>> mirror->filter);
> >>> +        ds_put_format(&ctx->output, "  Index/Key: %ld\n",
> >>> +                                                (long int)
> >>> mirror->index);
> >> You don't ned to cast if you pass %d formatter instead of %ld. The
> >> same applies to other places in the patch where you cast to long int.
> >> In general, casting is not needed and should be avoided.
> >>
> >>> + ds_put_cstr(&ctx->output,   "  Sources  :");
> >>> +        if (mirror->n_src > 0) {
> >>> +            struct svec srcs;
> >>> +            const char *src;
> >>> +            size_t j;
> >>> +            svec_init(&srcs);
> >>> +            for (j = 0; j < mirror->n_src; j++) {
> >>> +                svec_add(&srcs, mirror->src[j]->name);
> >>> +            }
> >>> +            svec_sort(&srcs);
> >>> +            SVEC_FOR_EACH (j, src, &srcs) {
> >>> +                ds_put_format(&ctx->output, "  %s", src);
> >>> +            }
> >>> +            svec_destroy(&srcs);
> >>> +        } else {
> >>> +            ds_put_cstr(&ctx->output, "  None attached");
> >>> +        }
> >>> +        ds_put_cstr(&ctx->output, "\n");
> >>> +    }
> >>> +
> >>> +    free(mirrors);
> >>> +}
> >>> +
> >>>   static const struct ctl_table_class tables[NBREC_N_TABLES] = {
> >>>       [NBREC_TABLE_DHCP_OPTIONS].row_ids
> >>>       = {{&nbrec_logical_switch_port_col_name, NULL,
> >>> @@ -7334,6 +7678,15 @@ static const struct ctl_command_syntax
> >>> nbctl_commands[] = {
> >>>       { "qos-list", 1, 1, "SWITCH", nbctl_pre_qos_list, nbctl_qos_list,
> >>>         NULL, "", RO },
> >>>
> >>> +    /* mirror commands. */
> >>> +    { "mirror-add", 5, 5,
> >>> +      "NAME TYPE INDEX FILTER IP",
> >>> +      nbctl_pre_mirror_add, nbctl_mirror_add, NULL, "--may-exist",
> >>> RW },
> >>> +    { "mirror-del", 0, 1, "[NAME]",
> >>> +      nbctl_pre_mirror_del, nbctl_mirror_del, NULL, "", RW },
> >>> +    { "mirror-list", 0, 0, "", nbctl_pre_mirror_list,
> >>> nbctl_mirror_list,
> >>> +      NULL, "", RO },
> >>> +
> >>>       /* meter commands. */
> >>>       { "meter-add", 4, 5, "NAME ACTION RATE UNIT [BURST]",
> >>> nbctl_pre_meter_add,
> >>>         nbctl_meter_add, NULL, "--fair,--may-exist", RW },
> >>> @@ -7388,6 +7741,10 @@ static const struct ctl_command_syntax
> >>> nbctl_commands[] = {
> >>>         nbctl_lsp_get_dhcpv6_options, NULL, "", RO },
> >>>       { "lsp-get-ls", 1, 1, "PORT", nbctl_pre_lsp_get_ls,
> >>> nbctl_lsp_get_ls,
> >>>         NULL, "", RO },
> >>> +    { "lsp-attach-mirror", 2, 2, "PORT MIRROR", nbctl_pre_lsp_mirror,
> >>> +      nbctl_lsp_attach_mirror, NULL, "", RW },
> >>> +    { "lsp-detach-mirror", 2, 2, "PORT MIRROR", nbctl_pre_lsp_mirror,
> >>> +      nbctl_lsp_detach_mirror, NULL, "", RW },
> >>>
> >>>       /* forwarding group commands. */
> >>>       { "fwd-group-add", 4, INT_MAX, "SWITCH GROUP VIP VMAC PORT...",
> >>> diff --git a/utilities/ovn-sbctl.c b/utilities/ovn-sbctl.c
> >>> index f60dde1b6..3d73e9e25 100644
> >>> --- a/utilities/ovn-sbctl.c
> >>> +++ b/utilities/ovn-sbctl.c
> >>> @@ -307,6 +307,7 @@ pre_get_info(struct ctl_context *ctx)
> >>>       ovsdb_idl_add_column(ctx->idl, &sbrec_port_binding_col_chassis);
> >>>       ovsdb_idl_add_column(ctx->idl, &sbrec_port_binding_col_datapath);
> >>>       ovsdb_idl_add_column(ctx->idl, &sbrec_port_binding_col_up);
> >>> +    ovsdb_idl_add_column(ctx->idl,
> >>> &sbrec_port_binding_col_mirror_rules);
> >>>
> >>>       ovsdb_idl_add_column(ctx->idl,
> >>> &sbrec_logical_flow_col_logical_datapath);
> >>>       ovsdb_idl_add_column(ctx->idl,
> >>> &sbrec_logical_flow_col_logical_dp_group);
> >>> @@ -1431,6 +1432,9 @@ static const struct ctl_table_class
> >>> tables[SBREC_N_TABLES] = {
> >>>       [SBREC_TABLE_HA_CHASSIS_GROUP].row_ids[0]
> >>>       = {&sbrec_ha_chassis_group_col_name, NULL, NULL},
> >>>
> >>> +    [SBREC_TABLE_MIRROR].row_ids[0]
> >>> +    = {&sbrec_mirror_col_name, NULL, NULL},
> >>> +
> >>>       [SBREC_TABLE_METER].row_ids[0]
> >>>       = {&sbrec_meter_col_name, NULL, NULL},
> >>>
> >>> --
> >>> 2.31.1
> >>>


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