On Thu, Jul 29, 2021 at 10:51 AM Priyankar Jain
<[email protected]> wrote:
>
> Allow adding label to an ACL to identify which ACL allowed a particular
> flow in the connection tracking table.
>
> The ACL label covers 32 bits at the end of ct_label. Since only allowed
> connections are committed, only "allow" and "allow-related" ACLs can
> have the label.
>
> If the ACL allowing the connection changes, the label associated with the
> new ACL gets updated in the ct_label field. This is achieved by committing
> every packet that hits the ACL with the label to the connection tracking
> table.
> In case the new ACL doesn't have a label, the ct_label field is not
> cleared. This is done to prevent any performance change with ACLs that
> don't have label set.
> For the packets which hits an ACL without label, the behaviour remains the
> same as before with respect to the conntrack commit.
>
> Performance:
> We used ftrace to measure the time taken by an extra conntrack commit for
> the packets hitting the ACL with label. We measured the time taken to
> execute the ovs_ct_execute call inside the sock_sendmsg call.
>
> ACL used :-
>  from-lport  2000 (tcp && ip4.src == 10.0.0.11 && ip4.dst == 10.0.0.12) 
> allow-related --label=1234
>
> It was observed that the extra ovs_ct_execute call accounted for 1-2%
> of the round trip time (sock_sendmsg duration). The actual percentage
> is expected to be lesser since it doesn't take into account the tracing
> overhead which is substantial for smaller functions.
>
> Signed-off-by: Priyankar Jain <[email protected]>

Thanks for v2.

The patch LGTM.

Acked-by: Numan Siddique <[email protected]>

Can you please add a NEWS entry for this feature ?

You can add my Acked-by tag in v3.

@Han - Do you have any plans to take a look at this patch ? Along with
other review comments, I wonder if you've
any comments on the effect of this patch on hardware offloading of OVS flows.

Thanks
Numan

> ---
>
> v1 -> v2
> * Changed type of label from string (hex) to unsigned integer.
> * Added two system tests for checking the correct ct_label programming.
> * Updated ovn-northd.8.xml with the new logical flows added as part of
>   this patch.
> * Rebased with latest master.
>
>  lib/logical-fields.c      |   2 +
>  northd/ovn-northd.8.xml   |  26 +++-
>  northd/ovn-northd.c       |  53 +++++++--
>  northd/ovn_northd.dl      |  76 +++++++++---
>  ovn-nb.ovsschema          |   7 +-
>  ovn-nb.xml                |  12 ++
>  tests/ovn-nbctl.at        |  19 +++
>  tests/ovn-northd.at       | 107 ++++++++++++++++-
>  tests/ovn.at              |   1 +
>  tests/system-ovn.at       | 244 ++++++++++++++++++++++++++++++++++++++
>  utilities/ovn-nbctl.8.xml |   2 +-
>  utilities/ovn-nbctl.c     |  38 +++++-
>  12 files changed, 545 insertions(+), 42 deletions(-)
>
> diff --git a/lib/logical-fields.c b/lib/logical-fields.c
> index 72853013e..7b3d431e0 100644
> --- a/lib/logical-fields.c
> +++ b/lib/logical-fields.c
> @@ -146,6 +146,8 @@ ovn_init_symtab(struct shash *symtab)
>                                      "ct_label[32..79]", WR_CT_COMMIT);
>      expr_symtab_add_subfield_scoped(symtab, "ct_label.ecmp_reply_port", NULL,
>                                      "ct_label[80..95]", WR_CT_COMMIT);
> +    expr_symtab_add_subfield_scoped(symtab, "ct_label.label", NULL,
> +                                    "ct_label[96..127]", WR_CT_COMMIT);
>
>      expr_symtab_add_field(symtab, "ct_state", MFF_CT_STATE, NULL, false);
>
> diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml
> index 99a19f853..641372b77 100644
> --- a/northd/ovn-northd.8.xml
> +++ b/northd/ovn-northd.8.xml
> @@ -670,13 +670,19 @@
>          the <code>next;</code> action.  If there are any stateful ACLs
>          on this datapath, then <code>allow</code> ACLs translate to
>          <code>ct_commit; next;</code> (which acts as a hint for the next 
> tables
> -        to commit the connection to conntrack),
> +        to commit the connection to conntrack). In case the <code>ACL</code>
> +        has a label then <code>reg3</code> is loaded with the label value and
> +        <code>reg0[13]</code> bit is set to 1 (which acts as a hint for the
> +        next tables to commit the label to conntrack).
>        </li>
>        <li>
>          <code>allow-related</code> ACLs translate into logical
>          flows with the <code>ct_commit(ct_label=0/1); next;</code> actions
>          for new connections and <code>reg0[1] = 1; next;</code> for existing
> -        connections.
> +        connections.  In case the <code>ACL</code> has a label then
> +        <code>reg3</code> is loaded with the label value and
> +        <code>reg0[13]</code> bit is set to 1 (which acts as a hint for the
> +        next tables to commit the label to conntrack).
>        </li>
>        <li>
>          <code>allow-stateless</code> ACLs translate into logical
> @@ -876,9 +882,19 @@
>        </li>
>
>        <li>
> -        A priority-100 flow commits packets to connection tracker using
> -        <code>ct_commit; next;</code> action based on a hint provided by
> -        the previous tables (with a match for <code>reg0[1] == 1</code>).
> +        A priority 100 flow is added which commits the packet to the 
> conntrack
> +        and sets the most significant 32-bits of <code>ct_label</code> with 
> the
> +        <code>reg3</code> value based on the hint provided by previous tables
> +        (with a match for <code>reg0[1] == 1 &amp;&amp; reg0[13] == 
> 1</code>).
> +        This is used by the <code>ACLs</code> with label to commit the label
> +        value to conntrack.
> +      </li>
> +
> +      <li>
> +        For <code>ACLs</code> without label, a second priority-100 flow 
> commits
> +        packets to connection tracker using <code>ct_commit; next;</code>
> +        action based on a hint provided by the previous tables (with a match
> +        for <code>reg0[1] == 1 &amp;&amp; reg0[13] == 0</code>).
>        </li>
>        <li>
>          A priority-0 flow that simply moves traffic to the next table.
> diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c
> index ebe12cace..10b9af502 100644
> --- a/northd/ovn-northd.c
> +++ b/northd/ovn-northd.c
> @@ -241,6 +241,7 @@ enum ovn_stage {
>  #define REGBIT_ACL_HINT_BLOCK     "reg0[10]"
>  #define REGBIT_LKUP_FDB           "reg0[11]"
>  #define REGBIT_HAIRPIN_REPLY      "reg0[12]"
> +#define REGBIT_ACL_LABEL          "reg0[13]"
>
>  #define REG_ORIG_DIP_IPV4         "reg1"
>  #define REG_ORIG_DIP_IPV6         "xxreg1"
> @@ -273,6 +274,9 @@ enum ovn_stage {
>  #define REG_SRC_IPV4 "reg1"
>  #define REG_SRC_IPV6 "xxreg1"
>
> +/* Register used for setting a label for ACLs in a Logical Switch. */
> +#define REG_LABEL "reg3"
> +
>  #define FLAGBIT_NOT_VXLAN "flags[1] == 0"
>
>  /*
> @@ -281,14 +285,15 @@ enum ovn_stage {
>   * Logical Switch pipeline:
>   * 
> +----+----------------------------------------------+---+------------------+
>   * | R0 |     REGBIT_{CONNTRACK/DHCP/DNS}              |   |                 
>  |
> - * |    |     REGBIT_{HAIRPIN/HAIRPIN_REPLY}           | X |                 
>  |
> - * |    | REGBIT_ACL_HINT_{ALLOW_NEW/ALLOW/DROP/BLOCK} | X |                 
>  |
> + * |    |     REGBIT_{HAIRPIN/HAIRPIN_REPLY}           |   |                 
>  |
> + * |    | REGBIT_ACL_HINT_{ALLOW_NEW/ALLOW/DROP/BLOCK} |   |                 
>  |
> + * |    |     REGBIT_ACL_LABEL                         | X |                 
>  |
>   * +----+----------------------------------------------+ X |                 
>  |
>   * | R1 |         ORIG_DIP_IPV4 (>= IN_STATEFUL)       | R |                 
>  |
>   * +----+----------------------------------------------+ E |                 
>  |
>   * | R2 |         ORIG_TP_DPORT (>= IN_STATEFUL)       | G |                 
>  |
>   * +----+----------------------------------------------+ 0 |                 
>  |
> - * | R3 |                   UNUSED                     |   |                 
>  |
> + * | R3 |                  ACL LABEL                   |   |                 
>  |
>   * 
> +----+----------------------------------------------+---+------------------+
>   * | R4 |                   UNUSED                     |   |                 
>  |
>   * +----+----------------------------------------------+ X |   ORIG_DIP_IPV6 
>  |
> @@ -5781,7 +5786,12 @@ consider_acl(struct hmap *lflows, struct ovn_datapath 
> *od,
>              ds_clear(actions);
>              ds_put_format(match, REGBIT_ACL_HINT_ALLOW_NEW " == 1 && (%s)",
>                            acl->match);
> +
>              ds_put_cstr(actions, REGBIT_CONNTRACK_COMMIT" = 1; ");
> +            if (acl->label) {
> +                ds_put_format(actions, REGBIT_ACL_LABEL" = 1; "
> +                              REG_LABEL" = %"PRId64"; ", acl->label);
> +            }
>              build_acl_log(actions, acl, meter_groups);
>              ds_put_cstr(actions, "next;");
>              ovn_lflow_add_with_hint(lflows, od, stage,
> @@ -5792,15 +5802,21 @@ consider_acl(struct hmap *lflows, struct ovn_datapath 
> *od,
>
>              /* Match on traffic in the request direction for an established
>               * connection tracking entry that has not been marked for
> -             * deletion.  There is no need to commit here, so we can just
> -             * proceed to the next table. We use this to ensure that this
> +             * deletion. We use this to ensure that this
>               * connection is still allowed by the currently defined
> -             * policy. Match untracked packets too. */
> +             * policy. Match untracked packets too.
> +             * Commit the connection only if the ACL has a label. This is 
> done
> +             * to update the connection tracking entry label in case the ACL
> +             * allowing the connection changes. */
>              ds_clear(match);
>              ds_clear(actions);
>              ds_put_format(match, REGBIT_ACL_HINT_ALLOW " == 1 && (%s)",
>                            acl->match);
> -
> +            if (acl->label) {
> +                ds_put_cstr(actions, REGBIT_CONNTRACK_COMMIT" = 1; ");
> +                ds_put_format(actions, REGBIT_ACL_LABEL" = 1; "
> +                              REG_LABEL" = %"PRId64"; ", acl->label);
> +            }
>              build_acl_log(actions, acl, meter_groups);
>              ds_put_cstr(actions, "next;");
>              ovn_lflow_add_with_hint(lflows, od, stage,
> @@ -6299,15 +6315,34 @@ build_stateful(struct ovn_datapath *od, struct hmap 
> *lflows)
>      ovn_lflow_add(lflows, od, S_SWITCH_IN_STATEFUL, 0, "1", "next;");
>      ovn_lflow_add(lflows, od, S_SWITCH_OUT_STATEFUL, 0, "1", "next;");
>
> +    /* If REGBIT_CONNTRACK_COMMIT is set as 1 and
> +     * REGBIT_CONNTRACK_SET_LABEL is set to 1, then the packets should be
> +     * committed to conntrack.
> +     * We always set ct_mark.blocked to 0 here as
> +     * any packet that makes it this far is part of a connection we
> +     * want to allow to continue. */
> +    ovn_lflow_add(lflows, od, S_SWITCH_IN_STATEFUL, 100,
> +                  REGBIT_CONNTRACK_COMMIT" == 1 && "
> +                  REGBIT_ACL_LABEL" == 1",
> +                  "ct_commit { ct_label.blocked = 0; "
> +                  "ct_label.label = " REG_LABEL "; }; next;");
> +    ovn_lflow_add(lflows, od, S_SWITCH_OUT_STATEFUL, 100,
> +                  REGBIT_CONNTRACK_COMMIT" == 1 && "
> +                  REGBIT_ACL_LABEL" == 1",
> +                  "ct_commit { ct_label.blocked = 0; "
> +                  "ct_label.label = " REG_LABEL "; }; next;");
> +
>      /* If REGBIT_CONNTRACK_COMMIT is set as 1, then the packets should be
>       * committed to conntrack. We always set ct_label.blocked to 0 here as
>       * any packet that makes it this far is part of a connection we
>       * want to allow to continue. */
>      ovn_lflow_add(lflows, od, S_SWITCH_IN_STATEFUL, 100,
> -                  REGBIT_CONNTRACK_COMMIT" == 1",
> +                  REGBIT_CONNTRACK_COMMIT" == 1 && "
> +                  REGBIT_ACL_LABEL" == 0",
>                    "ct_commit { ct_label.blocked = 0; }; next;");
>      ovn_lflow_add(lflows, od, S_SWITCH_OUT_STATEFUL, 100,
> -                  REGBIT_CONNTRACK_COMMIT" == 1",
> +                  REGBIT_CONNTRACK_COMMIT" == 1 && "
> +                  REGBIT_ACL_LABEL" == 0",
>                    "ct_commit { ct_label.blocked = 0; }; next;");
>  }
>
> diff --git a/northd/ovn_northd.dl b/northd/ovn_northd.dl
> index 7bfaae992..f59d2841d 100644
> --- a/northd/ovn_northd.dl
> +++ b/northd/ovn_northd.dl
> @@ -1503,13 +1503,14 @@ function s_ROUTER_OUT_DELIVERY():       Stage { 
> Stage{ Egress,  4, "lr_out_deliv
>   * Logical Switch pipeline:
>   * 
> +----+----------------------------------------------+---+------------------+
>   * | R0 |     REGBIT_{CONNTRACK/DHCP/DNS}              |   |                 
>  |
> - * |    |     REGBIT_{HAIRPIN/HAIRPIN_REPLY}           | X |                 
>  |
> + * |    |     REGBIT_{HAIRPIN/HAIRPIN_REPLY}           |   |                 
>  |
> + * |    |     REGBIT_ACL_LABEL                         | X |                 
>  |
>   * +----+----------------------------------------------+ X |                 
>  |
>   * | R1 |         ORIG_DIP_IPV4 (>= IN_STATEFUL)       | R |                 
>  |
>   * +----+----------------------------------------------+ E |                 
>  |
>   * | R2 |         ORIG_TP_DPORT (>= IN_STATEFUL)       | G |                 
>  |
>   * +----+----------------------------------------------+ 0 |                 
>  |
> - * | R3 |                   UNUSED                     |   |                 
>  |
> + * | R3 |                   ACL_LABEL                  |   |                 
>  |
>   * 
> +----+----------------------------------------------+---+------------------+
>   * | R4 |                   UNUSED                     |   |                 
>  |
>   * +----+----------------------------------------------+ X |   ORIG_DIP_IPV6 
>  |
> @@ -1582,6 +1583,7 @@ function rEGBIT_ACL_HINT_DROP()    : string = "reg0[9]"
>  function rEGBIT_ACL_HINT_BLOCK()   : string = "reg0[10]"
>  function rEGBIT_LKUP_FDB()         : string = "reg0[11]"
>  function rEGBIT_HAIRPIN_REPLY()    : string = "reg0[12]"
> +function rEGBIT_ACL_LABEL()        : string = "reg0[13]"
>
>  function rEG_ORIG_DIP_IPV4()       : string = "reg1"
>  function rEG_ORIG_DIP_IPV6()       : string = "xxreg1"
> @@ -1608,6 +1610,9 @@ function rEG_INPORT_ETH_ADDR() : string = "xreg0[0..47]"
>  function rEG_ECMP_GROUP_ID()  : string = "reg8[0..15]"
>  function rEG_ECMP_MEMBER_ID() : string = "reg8[16..31]"
>
> +/* Register used for setting a label for ACLs in a Logical Switch. */
> +function rEG_LABEL() : string = "reg3"
> +
>  function fLAGBIT_NOT_VXLAN() : string = "flags[1] == 0"
>
>  function mFF_N_LOG_REGS()          : bit<32> = 10
> @@ -2696,26 +2701,41 @@ for (&SwitchACL(.sw = sw, .acl = acl, .has_fair_meter 
> = fair_meter)) {
>               * that case here and un-set ct_label.blocked (which will be done
>               * by ct_commit in the "stateful" stage) to indicate that the
>               * connection should be allowed to resume.
> +             * If the ACL has a label, then load REG_LABEL with the label and
> +             * set the REGBIT_ACL_LABEL field.
>               */
> -            Flow(.logical_datapath = sw._uuid,
> -                 .stage            = stage,
> -                 .priority         = acl.priority + oVN_ACL_PRI_OFFSET(),
> -                 .__match          = "${rEGBIT_ACL_HINT_ALLOW_NEW()} == 1 && 
> (${acl.__match})",
> -                 .actions          = "${rEGBIT_CONNTRACK_COMMIT()} = 1; 
> ${acl_log}next;",
> -                 .external_ids     = stage_hint);
> +            var __action = if (acl.label != 0) {
> +                "${rEGBIT_CONNTRACK_COMMIT()} = 1; ${rEGBIT_ACL_LABEL()} = 
> 1;\
> +                 \ ${rEG_LABEL()} = ${acl.label}; ${acl_log}next;"
> +            } else {
> +                "${rEGBIT_CONNTRACK_COMMIT()} = 1; ${acl_log}next;"
> +            } in Flow(.logical_datapath = sw._uuid,
> +                      .stage            = stage,
> +                      .priority         = acl.priority + 
> oVN_ACL_PRI_OFFSET(),
> +                      .__match          = "${rEGBIT_ACL_HINT_ALLOW_NEW()} == 
> 1 && (${acl.__match})",
> +                      .actions          = __action,
> +                      .external_ids     = stage_hint);
>
>              /* Match on traffic in the request direction for an established
>               * connection tracking entry that has not been marked for
> -             * deletion.  There is no need to commit here, so we can just
> -             * proceed to the next table. We use this to ensure that this
> +             * deletion. We use this to ensure that this
>               * connection is still allowed by the currently defined
> -             * policy. Match untracked packets too. */
> -            Flow(.logical_datapath = sw._uuid,
> -                 .stage            = stage,
> -                 .priority         = acl.priority + oVN_ACL_PRI_OFFSET(),
> -                 .__match          = "${rEGBIT_ACL_HINT_ALLOW()} == 1 && 
> (${acl.__match})",
> -                 .actions          = "${acl_log}next;",
> -                 .external_ids     = stage_hint)
> +             * policy. Match untracked packets too.
> +             * Commit the connection only if the ACL has a label. This is 
> done to
> +             * update the connection tracking entry label in case the ACL
> +             * allowing the connection changes.
> +             */
> +            var __action = if (acl.label != 0) {
> +                "${rEGBIT_CONNTRACK_COMMIT()} = 1; ${rEGBIT_ACL_LABEL()} = 
> 1;\
> +                 \ ${rEG_LABEL()} = ${acl.label}; ${acl_log}next;"
> +            } else {
> +                "${acl_log}next;"
> +            } in Flow(.logical_datapath = sw._uuid,
> +                      .stage            = stage,
> +                      .priority         = acl.priority + 
> oVN_ACL_PRI_OFFSET(),
> +                      .__match          = "${rEGBIT_ACL_HINT_ALLOW()} == 1 
> && (${acl.__match})",
> +                      .actions          = __action,
> +                      .external_ids     = stage_hint)
>          }
>      } else if (acl.action == "allow-stateless") {
>          Flow(.logical_datapath = sw._uuid,
> @@ -2932,6 +2952,24 @@ for (&Switch(._uuid = ls_uuid)) {
>           .actions          = "next;",
>           .external_ids     = map_empty());
>
> +    /* If REGBIT_CONNTRACK_COMMIT is set as 1 and REGBIT_CONNTRACK_SET_LABEL
> +     * is set to 1, then the packets should be
> +     * committed to conntrack. We always set ct_label.blocked to 0 here as
> +     * any packet that makes it this far is part of a connection we
> +     * want to allow to continue. */
> +    Flow(.logical_datapath = ls_uuid,
> +         .stage            = s_SWITCH_IN_STATEFUL(),
> +         .priority         = 100,
> +         .__match          = "${rEGBIT_CONNTRACK_COMMIT()} == 1 && 
> ${rEGBIT_ACL_LABEL()} == 1",
> +         .actions          = "ct_commit { ct_label.blocked = 0; 
> ct_label.label = ${rEG_LABEL()}; }; next;",
> +         .external_ids     = map_empty());
> +    Flow(.logical_datapath = ls_uuid,
> +         .stage            = s_SWITCH_OUT_STATEFUL(),
> +         .priority         = 100,
> +         .__match          = "${rEGBIT_CONNTRACK_COMMIT()} == 1 && 
> ${rEGBIT_ACL_LABEL()} == 1",
> +         .actions          = "ct_commit { ct_label.blocked = 0; 
> ct_label.label = ${rEG_LABEL()}; }; next;",
> +         .external_ids     = map_empty());
> +
>      /* If REGBIT_CONNTRACK_COMMIT is set as 1, then the packets should be
>       * committed to conntrack. We always set ct_label.blocked to 0 here as
>       * any packet that makes it this far is part of a connection we
> @@ -2939,13 +2977,13 @@ for (&Switch(._uuid = ls_uuid)) {
>      Flow(.logical_datapath = ls_uuid,
>           .stage            = s_SWITCH_IN_STATEFUL(),
>           .priority         = 100,
> -         .__match          = "${rEGBIT_CONNTRACK_COMMIT()} == 1",
> +         .__match          = "${rEGBIT_CONNTRACK_COMMIT()} == 1 && 
> ${rEGBIT_ACL_LABEL()} == 0",
>           .actions          = "ct_commit { ct_label.blocked = 0; }; next;",
>           .external_ids     = map_empty());
>      Flow(.logical_datapath = ls_uuid,
>           .stage            = s_SWITCH_OUT_STATEFUL(),
>           .priority         = 100,
> -         .__match          = "${rEGBIT_CONNTRACK_COMMIT()} == 1",
> +         .__match          = "${rEGBIT_CONNTRACK_COMMIT()} == 1 && 
> ${rEGBIT_ACL_LABEL()} == 0",
>           .actions          = "ct_commit { ct_label.blocked = 0; }; next;",
>           .external_ids     = map_empty())
>  }
> diff --git a/ovn-nb.ovsschema b/ovn-nb.ovsschema
> index a53d5e851..2ac8ef3ea 100644
> --- a/ovn-nb.ovsschema
> +++ b/ovn-nb.ovsschema
> @@ -1,7 +1,7 @@
>  {
>      "name": "OVN_Northbound",
> -    "version": "5.32.0",
> -    "cksum": "2501921026 29540",
> +    "version": "5.32.1",
> +    "cksum": "2805328215 29734",
>      "tables": {
>          "NB_Global": {
>              "columns": {
> @@ -244,6 +244,9 @@
>                                                          "debug"]]},
>                                        "min": 0, "max": 1}},
>                  "meter": {"type": {"key": "string", "min": 0, "max": 1}},
> +                "label": {"type": {"key": {"type": "integer",
> +                                           "minInteger": 0,
> +                                           "maxInteger": 4294967295}}},
>                  "external_ids": {
>                      "type": {"key": "string", "value": "string",
>                               "min": 0, "max": "unlimited"}}},
> diff --git a/ovn-nb.xml b/ovn-nb.xml
> index c1176e81f..ebafa3e5e 100644
> --- a/ovn-nb.xml
> +++ b/ovn-nb.xml
> @@ -1853,6 +1853,18 @@
>        and <code>deny</code> as <ref column="action"/>.)
>      </p>
>
> +    <column name="label">
> +      <p>
> +        Associates an identifier with the ACL.
> +        The same value will be written to corresponding connection
> +        tracker entry. The value should be a valid 32-bit unsigned integer.
> +        This value can help in debugging from connection tracker side.
> +        For example, through this "label" we can backtrack to the ACL rule
> +        which is causing a "leaked" connection. Connection tracker entries 
> are
> +        created only for allowed connections so the label is valid only
> +        for allow and allow-related actions.
> +      </p>
> +    </column>
>      <column name="priority">
>        <p>
>          The ACL rule's priority.  Rules with numerically higher priority
> diff --git a/tests/ovn-nbctl.at b/tests/ovn-nbctl.at
> index 828777b82..4445ab7c0 100644
> --- a/tests/ovn-nbctl.at
> +++ b/tests/ovn-nbctl.at
> @@ -211,18 +211,36 @@ ovn_nbctl_test_acl() {
>     AT_CHECK([ovn-nbctl $2 acl-add $1 to-lport 300 tcp drop])
>     AT_CHECK([ovn-nbctl $2 acl-add $1 from-lport 200 ip drop])
>     AT_CHECK([ovn-nbctl $2 acl-add $1 to-lport 100 ip drop])
> +   AT_CHECK([ovn-nbctl $2 --label=1234 acl-add $1 from-lport 70 icmp 
> allow-related])
> +   AT_CHECK([ovn-nbctl $2 --label=1235 acl-add $1 to-lport 70 icmp 
> allow-related])
> +
>     dnl Add duplicated ACL
>     AT_CHECK([ovn-nbctl $2 acl-add $1 to-lport 100 ip drop], [1], [], 
> [stderr])
>     AT_CHECK([grep 'already existed' stderr], [0], [ignore])
>     AT_CHECK([ovn-nbctl $2 --may-exist acl-add $1 to-lport 100 ip drop])
>
> +   dnl Add invalid ACL label
> +   AT_CHECK([ovn-nbctl $2 --label=1234 acl-add $1 to-lport 50 ip drop], [1], 
> [], [stderr])
> +   AT_CHECK([grep 'can only be set with actions' stderr], [0], [ignore])
> +
> +   AT_CHECK([ovn-nbctl $2 --label=abcd acl-add $1 to-lport 50 ip 
> allow-related], [1], [], [stderr])
> +   AT_CHECK([grep 'label must in range 0...4294967295' stderr], [0], 
> [ignore])
> +
> +   AT_CHECK([ovn-nbctl $2 --label=-1 acl-add $1 to-lport 50 ip 
> allow-related], [1], [], [stderr])
> +   AT_CHECK([grep 'label must in range 0...4294967295' stderr], [0], 
> [ignore])
> +
> +   AT_CHECK([ovn-nbctl $2 --label=4294967296 acl-add $1 to-lport 50 ip 
> allow-related], [1], [], [stderr])
> +   AT_CHECK([grep 'label must in range 0...4294967295' stderr], [0], 
> [ignore])
> +
>     AT_CHECK([ovn-nbctl $2 acl-list $1], [0], [dnl
>  from-lport   600 (udp) drop log()
>  from-lport   400 (tcp) drop
>  from-lport   200 (ip) drop
> +from-lport    70 (icmp) allow-related label=1234
>    to-lport   500 (udp) drop log(name=test,severity=info)
>    to-lport   300 (tcp) drop
>    to-lport   100 (ip) drop
> +  to-lport    70 (icmp) allow-related label=1235
>  ])
>
>     dnl Delete in one direction.
> @@ -231,6 +249,7 @@ from-lport   200 (ip) drop
>  from-lport   600 (udp) drop log()
>  from-lport   400 (tcp) drop
>  from-lport   200 (ip) drop
> +from-lport    70 (icmp) allow-related label=1234
>  ])
>
>     dnl Delete all ACLs.
> diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
> index 94405349e..404290c97 100644
> --- a/tests/ovn-northd.at
> +++ b/tests/ovn-northd.at
> @@ -3608,7 +3608,8 @@ check_stateful_flows() {
>
>      AT_CHECK([grep "ls_in_stateful" sw0flows | sort], [0], [dnl
>    table=12(ls_in_stateful     ), priority=0    , match=(1), action=(next;)
> -  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1), 
> action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
>    table=12(ls_in_stateful     ), priority=120  , match=(ct.new && ip4.dst == 
> 10.0.0.10 && tcp.dst == 80), action=(reg1 = 10.0.0.10; reg2[[0..15]] = 80; 
> ct_lb(backends=10.0.0.4:8080);)
>  ])
>
> @@ -3630,7 +3631,8 @@ check_stateful_flows() {
>
>      AT_CHECK([grep "ls_out_stateful" sw0flows | sort], [0], [dnl
>    table=7 (ls_out_stateful    ), priority=0    , match=(1), action=(next;)
> -  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1), 
> action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
>  ])
>  }
>
> @@ -3669,7 +3671,8 @@ AT_CHECK([grep "ls_in_pre_stateful" sw0flows | sort], 
> [0], [dnl
>
>  AT_CHECK([grep "ls_in_stateful" sw0flows | sort], [0], [dnl
>    table=12(ls_in_stateful     ), priority=0    , match=(1), action=(next;)
> -  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1), 
> action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
>  ])
>
>  AT_CHECK([grep "ls_out_pre_lb" sw0flows | sort], [0], [dnl
> @@ -3687,14 +3690,108 @@ AT_CHECK([grep "ls_out_pre_stateful" sw0flows | 
> sort], [0], [dnl
>
>  AT_CHECK([grep "ls_out_stateful" sw0flows | sort], [0], [dnl
>    table=7 (ls_out_stateful    ), priority=0    , match=(1), action=(next;)
> -  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1), 
> action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
>  ])
>
>  AT_CLEANUP
>  ])
>
>  OVN_FOR_EACH_NORTHD([
> -AT_SETUP([ct.inv usage])
> +AT_SETUP([ovn -- ACL label usage])
> +ovn_start
> +
> +check ovn-nbctl ls-add sw0
> +check ovn-nbctl lsp-add sw0 sw0p1
> +
> +check ovn-nbctl --wait=sb --label=1234 acl-add sw0 to-lport 1002 tcp 
> allow-related
> +check ovn-nbctl --wait=sb --label=1234 acl-add sw0 from-lport 1002 tcp 
> allow-related
> +
> +ovn-sbctl dump-flows sw0 > sw0flows
> +AT_CAPTURE_FILE([sw0flows])
> +
> +AT_CHECK([grep -w "ls_in_acl" sw0flows | grep 2002 | sort], [0], [dnl
> +  table=9 (ls_in_acl          ), priority=2002 , match=(reg0[[7]] == 1 && 
> (tcp)), action=(reg0[[1]] = 1; reg0[[13]] = 1; reg3 = 1234; next;)
> +  table=9 (ls_in_acl          ), priority=2002 , match=(reg0[[8]] == 1 && 
> (tcp)), action=(reg0[[1]] = 1; reg0[[13]] = 1; reg3 = 1234; next;)
> +])
> +AT_CHECK([grep "ls_in_stateful" sw0flows | sort], [0], [dnl
> +  table=12(ls_in_stateful     ), priority=0    , match=(1), action=(next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
> +])
> +
> +AT_CHECK([grep -w "ls_out_acl" sw0flows | grep 2002 | sort], [0], [dnl
> +  table=4 (ls_out_acl         ), priority=2002 , match=(reg0[[7]] == 1 && 
> (tcp)), action=(reg0[[1]] = 1; reg0[[13]] = 1; reg3 = 1234; next;)
> +  table=4 (ls_out_acl         ), priority=2002 , match=(reg0[[8]] == 1 && 
> (tcp)), action=(reg0[[1]] = 1; reg0[[13]] = 1; reg3 = 1234; next;)
> +])
> +AT_CHECK([grep "ls_out_stateful" sw0flows | sort], [0], [dnl
> +  table=7 (ls_out_stateful    ), priority=0    , match=(1), action=(next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
> +])
> +
> +# Add new ACL without label
> +check ovn-nbctl --wait=sb acl-add sw0 to-lport 1002 udp allow-related
> +check ovn-nbctl --wait=sb acl-add sw0 from-lport 1002 udp allow-related
> +
> +ovn-sbctl dump-flows sw0 > sw0flows
> +AT_CAPTURE_FILE([sw0flows])
> +
> +AT_CHECK([grep -w "ls_in_acl" sw0flows | grep 2002 | sort], [0], [dnl
> +  table=9 (ls_in_acl          ), priority=2002 , match=(reg0[[7]] == 1 && 
> (tcp)), action=(reg0[[1]] = 1; reg0[[13]] = 1; reg3 = 1234; next;)
> +  table=9 (ls_in_acl          ), priority=2002 , match=(reg0[[7]] == 1 && 
> (udp)), action=(reg0[[1]] = 1; next;)
> +  table=9 (ls_in_acl          ), priority=2002 , match=(reg0[[8]] == 1 && 
> (tcp)), action=(reg0[[1]] = 1; reg0[[13]] = 1; reg3 = 1234; next;)
> +  table=9 (ls_in_acl          ), priority=2002 , match=(reg0[[8]] == 1 && 
> (udp)), action=(next;)
> +])
> +AT_CHECK([grep "ls_in_stateful" sw0flows | sort], [0], [dnl
> +  table=12(ls_in_stateful     ), priority=0    , match=(1), action=(next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
> +])
> +
> +AT_CHECK([grep -w "ls_out_acl" sw0flows | grep 2002 | sort], [0], [dnl
> +  table=4 (ls_out_acl         ), priority=2002 , match=(reg0[[7]] == 1 && 
> (tcp)), action=(reg0[[1]] = 1; reg0[[13]] = 1; reg3 = 1234; next;)
> +  table=4 (ls_out_acl         ), priority=2002 , match=(reg0[[7]] == 1 && 
> (udp)), action=(reg0[[1]] = 1; next;)
> +  table=4 (ls_out_acl         ), priority=2002 , match=(reg0[[8]] == 1 && 
> (tcp)), action=(reg0[[1]] = 1; reg0[[13]] = 1; reg3 = 1234; next;)
> +  table=4 (ls_out_acl         ), priority=2002 , match=(reg0[[8]] == 1 && 
> (udp)), action=(next;)
> +])
> +AT_CHECK([grep "ls_out_stateful" sw0flows | sort], [0], [dnl
> +  table=7 (ls_out_stateful    ), priority=0    , match=(1), action=(next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
> +])
> +
> +# Delete new ACL with label
> +check ovn-nbctl --wait=sb acl-del sw0 to-lport 1002 tcp
> +check ovn-nbctl --wait=sb acl-del sw0 from-lport 1002 tcp
> +
> +ovn-sbctl dump-flows sw0 > sw0flows
> +AT_CAPTURE_FILE([sw0flows])
> +
> +AT_CHECK([grep -w "ls_in_acl" sw0flows | grep 2002 | sort], [0], [dnl
> +  table=9 (ls_in_acl          ), priority=2002 , match=(reg0[[7]] == 1 && 
> (udp)), action=(reg0[[1]] = 1; next;)
> +  table=9 (ls_in_acl          ), priority=2002 , match=(reg0[[8]] == 1 && 
> (udp)), action=(next;)
> +])
> +AT_CHECK([grep "ls_in_stateful" sw0flows | sort], [0], [dnl
> +  table=12(ls_in_stateful     ), priority=0    , match=(1), action=(next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=12(ls_in_stateful     ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
> +])
> +
> +AT_CHECK([grep -w "ls_out_acl" sw0flows | grep 2002 | sort], [0], [dnl
> +  table=4 (ls_out_acl         ), priority=2002 , match=(reg0[[7]] == 1 && 
> (udp)), action=(reg0[[1]] = 1; next;)
> +  table=4 (ls_out_acl         ), priority=2002 , match=(reg0[[8]] == 1 && 
> (udp)), action=(next;)
> +])
> +AT_CHECK([grep "ls_out_stateful" sw0flows | sort], [0], [dnl
> +  table=7 (ls_out_stateful    ), priority=0    , match=(1), action=(next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 0), action=(ct_commit { ct_label.blocked = 0; }; next;)
> +  table=7 (ls_out_stateful    ), priority=100  , match=(reg0[[1]] == 1 && 
> reg0[[13]] == 1), action=(ct_commit { ct_label.blocked = 0; ct_label.label = 
> reg3; }; next;)
> +])
> +AT_CLEANUP
> +])
> +
> +OVN_FOR_EACH_NORTHD([
> +AT_SETUP([ovn -- ct.inv usage])
>  ovn_start
>
>  check ovn-nbctl ls-add sw0
> diff --git a/tests/ovn.at b/tests/ovn.at
> index 13d860f10..524f7e421 100644
> --- a/tests/ovn.at
> +++ b/tests/ovn.at
> @@ -197,6 +197,7 @@ ct_label = NXM_NX_CT_LABEL
>  ct_label.blocked = ct_label[0]
>  ct_label.ecmp_reply_eth = ct_label[32..79]
>  ct_label.ecmp_reply_port = ct_label[80..95]
> +ct_label.label = ct_label[96..127]
>  ct_label.natted = ct_label[1]
>  ct_mark = NXM_NX_CT_MARK
>  ct_state = NXM_NX_CT_STATE
> diff --git a/tests/system-ovn.at b/tests/system-ovn.at
> index 4288d80e5..7d03bf3f0 100644
> --- a/tests/system-ovn.at
> +++ b/tests/system-ovn.at
> @@ -6745,5 +6745,249 @@ OVS_APP_EXIT_AND_WAIT([NORTHD_TYPE])
>  as
>  OVS_TRAFFIC_VSWITCHD_STOP(["/.*error receiving.*/d
>  /.*terminating with signal 15.*/d"])
> +
> +AT_CLEANUP
> +])
> +
> +OVN_FOR_EACH_NORTHD([
> +AT_SETUP([ACL label - conntrack ct_label])
> +AT_KEYWORDS([acl label ct_commit])
> +
> +CHECK_CONNTRACK()
> +ovn_start
> +
> +OVS_TRAFFIC_VSWITCHD_START()
> +ADD_BR([br-int])
> +
> +# Set external-ids in br-int needed for ovn-controller
> +ovs-vsctl \
> +        -- set Open_vSwitch . external-ids:system-id=hv1 \
> +        -- set Open_vSwitch . 
> external-ids:ovn-remote=unix:$ovs_base/ovn-sb/ovn-sb.sock \
> +        -- set Open_vSwitch . external-ids:ovn-encap-type=geneve \
> +        -- set Open_vSwitch . external-ids:ovn-encap-ip=169.0.0.1 \
> +        -- set bridge br-int fail-mode=secure 
> other-config:disable-in-band=true
> +
> +# Start ovn-controller
> +start_daemon ovn-controller
> +
> +check ovn-nbctl ls-add sw0
> +
> +check ovn-nbctl lsp-add sw0 sw0-p1
> +check ovn-nbctl lsp-set-addresses sw0-p1 "50:54:00:00:00:02 10.0.0.2"
> +check ovn-nbctl lsp-set-port-security sw0-p1 "50:54:00:00:00:02 10.0.0.2"
> +
> +check ovn-nbctl lsp-add sw0 sw0-p2
> +check ovn-nbctl lsp-set-addresses sw0-p2 "50:54:00:00:00:03 10.0.0.3"
> +check ovn-nbctl lsp-set-port-security sw0-p2 "50:54:00:00:00:03 10.0.0.3"
> +
> +check ovn-nbctl lsp-add sw0 sw0-p3
> +check ovn-nbctl lsp-set-addresses sw0-p3 "50:54:00:00:00:04 10.0.0.4"
> +check ovn-nbctl lsp-set-port-security sw0-p3 "50:54:00:00:00:04 10.0.0.4"
> +
> +# ACLs
> +# Case 1: sw0-p1 ---> sw0-p3 allowed, label=1234
> +# Case 2: sw0-p3 ---> sw0-p1 allowed, label=1235
> +# Case 3: sw0-p1 ---> sw0-p2 allowed, no label
> +# Case 4: sw0-p2 ---> sw0-p1 allowed, no label
> +
> +check ovn-nbctl --label=1234 acl-add sw0 from-lport 1002 'ip4 && inport == 
> "sw0-p1" && ip4.dst == 10.0.0.4' allow-related
> +check ovn-nbctl --label=1235 acl-add sw0 to-lport 1002 'ip4 && outport == 
> "sw0-p1" && ip4.src == 10.0.0.4' allow-related
> +check ovn-nbctl acl-add sw0 from-lport 1001 "ip" allow-related
> +check ovn-nbctl acl-add sw0 to-lport 1001 "ip" allow-related
> +
> +
> +ADD_NAMESPACES(sw0-p1)
> +ADD_VETH(sw0-p1, sw0-p1, br-int, "10.0.0.2/24", "50:54:00:00:00:02", \
> +         "10.0.0.1")
> +ADD_NAMESPACES(sw0-p2)
> +ADD_VETH(sw0-p2, sw0-p2, br-int, "10.0.0.3/24", "50:54:00:00:00:03", \
> +         "10.0.0.1")
> +ADD_NAMESPACES(sw0-p3)
> +ADD_VETH(sw0-p3, sw0-p3, br-int, "10.0.0.4/24", "50:54:00:00:00:04", \
> +         "10.0.0.1")
> +
> +# Ensure ovn-controller is caught up
> +ovn-nbctl --wait=hv sync
> +
> +on_exit 'ovn-nbctl acl-list sw0'
> +on_exit 'ovn-sbctl lflow-list'
> +on_exit 'ovs-ofctl dump-flows br-int'
> +
> +wait_for_ports_up
> +
> +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> +# 'sw0-p1' should be able to ping 'sw0-p3'.
> +NS_CHECK_EXEC([sw0-p1], [ping -q -c 10 -i 0.3 -w 15 10.0.0.4 | FORMAT_PING], 
> \
> +[0], [dnl
> +10 packets transmitted, 10 received, 0% packet loss, time 0ms
> +])
> +
> +# Ensure conntrack entry is present and ct_label is set.
> +AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.0.0.4) | \
> +sed -e 's/zone=[[0-9]]*/zone=<cleared>/' | \
> +sed -e 's/labels=0x4d2[[0-9a-f]]*/labels=0x4d2000000000000000000000000/'], 
> [0], [dnl
> +icmp,orig=(src=10.0.0.2,dst=10.0.0.4,id=<cleared>,type=8,code=0),reply=(src=10.0.0.4,dst=10.0.0.2,id=<cleared>,type=0,code=0),zone=<cleared>,labels=0x4d2000000000000000000000000
> +icmp,orig=(src=10.0.0.2,dst=10.0.0.4,id=<cleared>,type=8,code=0),reply=(src=10.0.0.4,dst=10.0.0.2,id=<cleared>,type=0,code=0),zone=<cleared>
> +])
> +
> +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> +# 'sw0-p3' should be able to ping 'sw0-p1'.
> +NS_CHECK_EXEC([sw0-p3], [ping -q -c 10 -i 0.3 -w 15 10.0.0.2 | FORMAT_PING], 
> \
> +[0], [dnl
> +10 packets transmitted, 10 received, 0% packet loss, time 0ms
> +])
> +
> +# Ensure conntrack entry is present and ct_label is set.
> +AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.0.0.2) | \
> +sed -e 's/zone=[[0-9]]*/zone=<cleared>/' | \
> +sed -e 's/labels=0x4d3[[0-9a-f]]*/labels=0x4d3000000000000000000000000/'], 
> [0], [dnl
> +icmp,orig=(src=10.0.0.4,dst=10.0.0.2,id=<cleared>,type=8,code=0),reply=(src=10.0.0.2,dst=10.0.0.4,id=<cleared>,type=0,code=0),zone=<cleared>,labels=0x4d3000000000000000000000000
> +icmp,orig=(src=10.0.0.4,dst=10.0.0.2,id=<cleared>,type=8,code=0),reply=(src=10.0.0.2,dst=10.0.0.4,id=<cleared>,type=0,code=0),zone=<cleared>
> +])
> +
> +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> +# 'sw0-p1' should be able to ping 'sw0-p2'.
> +NS_CHECK_EXEC([sw0-p1], [ping -q -c 10 -i 0.3 -w 15 10.0.0.3 | FORMAT_PING], 
> \
> +[0], [dnl
> +10 packets transmitted, 10 received, 0% packet loss, time 0ms
> +])
> +
> +# Ensure conntrack entry is present and ct_label is not set.
> +AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.0.0.3) | \
> +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> +icmp,orig=(src=10.0.0.2,dst=10.0.0.3,id=<cleared>,type=8,code=0),reply=(src=10.0.0.3,dst=10.0.0.2,id=<cleared>,type=0,code=0),zone=<cleared>
> +icmp,orig=(src=10.0.0.2,dst=10.0.0.3,id=<cleared>,type=8,code=0),reply=(src=10.0.0.3,dst=10.0.0.2,id=<cleared>,type=0,code=0),zone=<cleared>
> +])
> +
> +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> +# 'sw0-p2' should be able to ping 'sw0-p1'.
> +NS_CHECK_EXEC([sw0-p2], [ping -q -c 10 -i 0.3 -w 15 10.0.0.2 | FORMAT_PING], 
> \
> +[0], [dnl
> +10 packets transmitted, 10 received, 0% packet loss, time 0ms
> +])
> +
> +# Ensure conntrack entry is present and ct_label is not set.
> +AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.0.0.2) | \
> +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> +icmp,orig=(src=10.0.0.3,dst=10.0.0.2,id=<cleared>,type=8,code=0),reply=(src=10.0.0.2,dst=10.0.0.3,id=<cleared>,type=0,code=0),zone=<cleared>
> +icmp,orig=(src=10.0.0.3,dst=10.0.0.2,id=<cleared>,type=8,code=0),reply=(src=10.0.0.2,dst=10.0.0.3,id=<cleared>,type=0,code=0),zone=<cleared>
> +])
> +
> +OVS_APP_EXIT_AND_WAIT([ovn-controller])
> +
> +as ovn-sb
> +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> +
> +as ovn-nb
> +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> +
> +as northd
> +OVS_APP_EXIT_AND_WAIT([NORTHD_TYPE])
> +
> +as
> +OVS_TRAFFIC_VSWITCHD_STOP(["/failed to query port patch-.*/d
> +/connection dropped.*/d"])
> +
> +AT_CLEANUP
> +])
> +
> +OVN_FOR_EACH_NORTHD([
> +AT_SETUP([ACL label - conntrack label change])
> +AT_KEYWORDS([acl label ct_commit label change])
> +
> +CHECK_CONNTRACK()
> +ovn_start
> +
> +OVS_TRAFFIC_VSWITCHD_START()
> +ADD_BR([br-int])
> +
> +# Set external-ids in br-int needed for ovn-controller
> +ovs-vsctl \
> +        -- set Open_vSwitch . external-ids:system-id=hv1 \
> +        -- set Open_vSwitch . 
> external-ids:ovn-remote=unix:$ovs_base/ovn-sb/ovn-sb.sock \
> +        -- set Open_vSwitch . external-ids:ovn-encap-type=geneve \
> +        -- set Open_vSwitch . external-ids:ovn-encap-ip=169.0.0.1 \
> +        -- set bridge br-int fail-mode=secure 
> other-config:disable-in-band=true
> +
> +# Start ovn-controller
> +start_daemon ovn-controller
> +
> +check ovn-nbctl ls-add sw0
> +
> +check ovn-nbctl lsp-add sw0 sw0-p1
> +check ovn-nbctl lsp-set-addresses sw0-p1 "50:54:00:00:00:02 10.0.0.2"
> +check ovn-nbctl lsp-set-port-security sw0-p1 "50:54:00:00:00:02 10.0.0.2"
> +
> +check ovn-nbctl lsp-add sw0 sw0-p2
> +check ovn-nbctl lsp-set-addresses sw0-p2 "50:54:00:00:00:03 10.0.0.3"
> +check ovn-nbctl lsp-set-port-security sw0-p2 "50:54:00:00:00:03 10.0.0.3"
> +
> +# ACLs
> +# sw0-p1 ---> sw0-p2 allowed, label=1234
> +
> +check ovn-nbctl --label=1234 acl-add sw0 from-lport 1002 'ip4 && inport == 
> "sw0-p1" && ip4.dst == 10.0.0.3' allow-related
> +
> +ADD_NAMESPACES(sw0-p1)
> +ADD_VETH(sw0-p1, sw0-p1, br-int, "10.0.0.2/24", "50:54:00:00:00:02", \
> +         "10.0.0.1")
> +ADD_NAMESPACES(sw0-p2)
> +ADD_VETH(sw0-p2, sw0-p2, br-int, "10.0.0.3/24", "50:54:00:00:00:03", \
> +         "10.0.0.1")
> +
> +# Ensure ovn-controller is caught up
> +ovn-nbctl --wait=hv sync
> +
> +on_exit 'ovn-nbctl acl-list sw0'
> +on_exit 'ovn-sbctl lflow-list'
> +on_exit 'ovs-ofctl dump-flows br-int'
> +
> +wait_for_ports_up
> +
> +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> +
> +# start a background ping for ~30 secs.
> +NETNS_DAEMONIZE([sw0-p1], [[ping -q -c 100 -i 0.3 -w 15 10.0.0.3]], 
> [ns-sw0-p1.pid])
> +
> +sleep 3s
> +
> +# Ensure conntrack entry is present and ct_label is set.
> +AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.0.0.3) | \
> +sed -e 's/zone=[[0-9]]*/zone=<cleared>/' | \
> +sed -e 's/labels=0x4d2[[0-9a-f]]*/labels=0x4d2000000000000000000000000/'], 
> [0], [dnl
> +icmp,orig=(src=10.0.0.2,dst=10.0.0.3,id=<cleared>,type=8,code=0),reply=(src=10.0.0.3,dst=10.0.0.2,id=<cleared>,type=0,code=0),zone=<cleared>,labels=0x4d2000000000000000000000000
> +icmp,orig=(src=10.0.0.2,dst=10.0.0.3,id=<cleared>,type=8,code=0),reply=(src=10.0.0.3,dst=10.0.0.2,id=<cleared>,type=0,code=0),zone=<cleared>
> +])
> +
> +# Add a higher priority ACL with different label.
> +# This ACL also allows the ping running in background.
> +
> +check ovn-nbctl --label=1235 acl-add sw0 from-lport 1003 'ip4 && inport == 
> "sw0-p1" && ip4.dst == 10.0.0.3' allow-related
> +ovn-nbctl --wait=hv sync
> +
> +sleep 3s
> +
> +# Ensure conntrack entry is updated with new ct_label is set.
> +AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.0.0.3) | \
> +sed -e 's/zone=[[0-9]]*/zone=<cleared>/' | \
> +sed -e 's/labels=0x4d3[[0-9a-f]]*/labels=0x4d3000000000000000000000000/'], 
> [0], [dnl
> +icmp,orig=(src=10.0.0.2,dst=10.0.0.3,id=<cleared>,type=8,code=0),reply=(src=10.0.0.3,dst=10.0.0.2,id=<cleared>,type=0,code=0),zone=<cleared>,labels=0x4d3000000000000000000000000
> +icmp,orig=(src=10.0.0.2,dst=10.0.0.3,id=<cleared>,type=8,code=0),reply=(src=10.0.0.3,dst=10.0.0.2,id=<cleared>,type=0,code=0),zone=<cleared>
> +])
> +
> +OVS_APP_EXIT_AND_WAIT([ovn-controller])
> +
> +as ovn-sb
> +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> +
> +as ovn-nb
> +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> +
> +as northd
> +OVS_APP_EXIT_AND_WAIT([NORTHD_TYPE])
> +
> +as
> +OVS_TRAFFIC_VSWITCHD_STOP(["/failed to query port patch-.*/d
> +/connection dropped.*/d"])
> +
>  AT_CLEANUP
>  ])
> diff --git a/utilities/ovn-nbctl.8.xml b/utilities/ovn-nbctl.8.xml
> index 987797860..80a564660 100644
> --- a/utilities/ovn-nbctl.8.xml
> +++ b/utilities/ovn-nbctl.8.xml
> @@ -399,7 +399,7 @@
>        must be either <code>switch</code> or <code>port-group</code>.
>      </p>
>      <dl>
> -      <dt>[<code>--type=</code>{<code>switch</code> | 
> <code>port-group</code>}] [<code>--log</code>] 
> [<code>--meter=</code><var>meter</var>] 
> [<code>--severity=</code><var>severity</var>] 
> [<code>--name=</code><var>name</var>] [<code>--may-exist</code>] 
> <code>acl-add</code> <var>entity</var> <var>direction</var> 
> <var>priority</var> <var>match</var> <var>verdict</var></dt>
> +      <dt>[<code>--type=</code>{<code>switch</code> | 
> <code>port-group</code>}] [<code>--log</code>] 
> [<code>--meter=</code><var>meter</var>] 
> [<code>--severity=</code><var>severity</var>] 
> [<code>--name=</code><var>name</var>] [<code>--label=</code><var>label</var>] 
> [<code>--may-exist</code>] <code>acl-add</code> <var>entity</var> 
> <var>direction</var> <var>priority</var> <var>match</var> 
> <var>verdict</var></dt>
>        <dd>
>          <p>
>            Adds the specified ACL to <var>entity</var>.  <var>direction</var>
> diff --git a/utilities/ovn-nbctl.c b/utilities/ovn-nbctl.c
> index f41238990..ada53b662 100644
> --- a/utilities/ovn-nbctl.c
> +++ b/utilities/ovn-nbctl.c
> @@ -2011,6 +2011,9 @@ nbctl_acl_list(struct ctl_context *ctx)
>              ds_chomp(&ctx->output, ',');
>              ds_put_cstr(&ctx->output, ")");
>          }
> +        if (acl->label) {
> +          ds_put_format(&ctx->output, " label=%"PRId64, acl->label);
> +        }
>          ds_put_cstr(&ctx->output, "\n");
>      }
>
> @@ -2069,6 +2072,19 @@ parse_priority(const char *arg, int64_t *priority_p)
>      return NULL;
>  }
>
> +static char * OVS_WARN_UNUSED_RESULT
> +parse_acl_label(const char *arg, int64_t *label_p)
> +{
> +    /* Validate label. */
> +    int64_t label;
> +    if (!ovs_scan(arg, "%"SCNd64, &label)
> +        || label < 0 || label > UINT32_MAX) {
> +        return xasprintf("%s: label must in range 0...4294967295", arg);
> +    }
> +    *label_p = label;
> +    return NULL;
> +}
> +
>  static void
>  nbctl_pre_acl(struct ctl_context *ctx)
>  {
> @@ -2093,6 +2109,7 @@ nbctl_pre_acl_list(struct ctl_context *ctx)
>      ovsdb_idl_add_column(ctx->idl, &nbrec_acl_col_name);
>      ovsdb_idl_add_column(ctx->idl, &nbrec_acl_col_severity);
>      ovsdb_idl_add_column(ctx->idl, &nbrec_acl_col_meter);
> +    ovsdb_idl_add_column(ctx->idl, &nbrec_acl_col_label);
>  }
>
>  static void
> @@ -2160,6 +2177,25 @@ nbctl_acl_add(struct ctl_context *ctx)
>          nbrec_acl_set_meter(acl, meter);
>      }
>
> +    /* Set the ACL label */
> +    const char *label = shash_find_data(&ctx->options, "--label");
> +    if (label) {
> +      /* Ensure that the action is either allow or allow-related */
> +      if (strcmp(action, "allow") && strcmp(action, "allow-related")) {
> +        ctl_error(ctx, "label can only be set with actions \"allow\" or "
> +                  "\"allow-related\"");
> +        return;
> +      }
> +
> +      int64_t label_value = 0;
> +      error = parse_acl_label(label, &label_value);
> +      if (error) {
> +        ctx->error = error;
> +        return;
> +      }
> +      nbrec_acl_set_label(acl, label_value);
> +    }
> +
>      /* Check if same acl already exists for the ls/portgroup */
>      size_t n_acls = pg ? pg->n_acls : ls->n_acls;
>      struct nbrec_acl **acls = pg ? pg->acls : ls->acls;
> @@ -6757,7 +6793,7 @@ static const struct ctl_command_syntax nbctl_commands[] 
> = {
>      /* acl commands. */
>      { "acl-add", 5, 6, "{SWITCH | PORTGROUP} DIRECTION PRIORITY MATCH 
> ACTION",
>        nbctl_pre_acl, nbctl_acl_add, NULL,
> -      "--log,--may-exist,--type=,--name=,--severity=,--meter=", RW },
> +      "--log,--may-exist,--type=,--name=,--severity=,--meter=,--label=", RW 
> },
>      { "acl-del", 1, 4, "{SWITCH | PORTGROUP} [DIRECTION [PRIORITY MATCH]]",
>        nbctl_pre_acl, nbctl_acl_del, NULL, "--type=", RW },
>      { "acl-list", 1, 1, "{SWITCH | PORTGROUP}",
> --
> 2.30.1 (Apple Git-130)
>
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> dev mailing list
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> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>
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