From: Ivan Malov <ivan.ma...@oktetlabs.ru>

For use with "transfer" flows. Supposed to match traffic transmitted
by the DPDK application via the specified ethdev, at e-switch level.

Must not be combined with attributes "ingress" / "egress".

Signed-off-by: Ivan Malov <ivan.ma...@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <andrew.rybche...@oktetlabs.ru>
---
 app/test-pmd/cmdline_flow.c                 | 27 ++++++++++++++++
 doc/guides/prog_guide/rte_flow.rst          | 35 +++++++++++++++++++++
 doc/guides/rel_notes/release_21_11.rst      |  2 ++
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  4 +++
 lib/ethdev/rte_flow.c                       |  1 +
 lib/ethdev/rte_flow.h                       | 27 ++++++++++++++++
 6 files changed, 96 insertions(+)

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index bb22294dd3..e05b0d83d2 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -306,6 +306,8 @@ enum index {
        ITEM_POL_PORT,
        ITEM_POL_METER,
        ITEM_POL_POLICY,
+       ITEM_ETHDEV,
+       ITEM_ETHDEV_ID,
 
        /* Validate/create actions. */
        ACTIONS,
@@ -1000,6 +1002,7 @@ static const enum index next_item[] = {
        ITEM_GENEVE_OPT,
        ITEM_INTEGRITY,
        ITEM_CONNTRACK,
+       ITEM_ETHDEV,
        END_SET,
        ZERO,
 };
@@ -1368,6 +1371,12 @@ static const enum index item_integrity_lv[] = {
        ZERO,
 };
 
+static const enum index item_ethdev[] = {
+       ITEM_ETHDEV_ID,
+       ITEM_NEXT,
+       ZERO,
+};
+
 static const enum index next_action[] = {
        ACTION_END,
        ACTION_VOID,
@@ -3608,6 +3617,21 @@ static const struct token token_list[] = {
                             item_param),
                .args = ARGS(ARGS_ENTRY(struct rte_flow_item_conntrack, flags)),
        },
+       [ITEM_ETHDEV] = {
+               .name = "ethdev",
+               .help = "match traffic at e-switch going from (sent by) the 
given ethdev",
+               .priv = PRIV_ITEM(ETHDEV,
+                                 sizeof(struct rte_flow_item_ethdev)),
+               .next = NEXT(item_ethdev),
+               .call = parse_vc,
+       },
+       [ITEM_ETHDEV_ID] = {
+               .name = "id",
+               .help = "ethdev ID",
+               .next = NEXT(item_ethdev, NEXT_ENTRY(COMMON_UNSIGNED),
+                            item_param),
+               .args = ARGS(ARGS_ENTRY(struct rte_flow_item_ethdev, id)),
+       },
        /* Validate/create actions. */
        [ACTIONS] = {
                .name = "actions",
@@ -8343,6 +8367,9 @@ flow_item_default_mask(const struct rte_flow_item *item)
        case RTE_FLOW_ITEM_TYPE_PFCP:
                mask = &rte_flow_item_pfcp_mask;
                break;
+       case RTE_FLOW_ITEM_TYPE_ETHDEV:
+               mask = &rte_flow_item_ethdev_mask;
+               break;
        default:
                break;
        }
diff --git a/doc/guides/prog_guide/rte_flow.rst 
b/doc/guides/prog_guide/rte_flow.rst
index 2b42d5ec8c..ab628d9139 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -1425,6 +1425,41 @@ Matches a conntrack state after conntrack action.
 - ``flags``: conntrack packet state flags.
 - Default ``mask`` matches all state bits.
 
+Item: ``ETHDEV``
+^^^^^^^^^^^^^^^^
+
+Matches traffic at e-switch going from (sent by) the given ethdev.
+
+::
+
+   *    (Ethdev) ~~~~~~~~~~~~ (Internal Port) >>>> [] ~~~~ (External Port)
+   *    :  SW                 :   Logical                    Net / Guest :
+   *    :                     :                                          :
+   *    | ---- PMD Layer ---- | ------------ E-Switch Layer ------------ |
+   *
+   *    [] shows the effective ("transfer") standpoint, the match engine;
+   *    >> shows the traffic flow in question hitting the match engine;
+   *    ~~ shows logical interconnects between the endpoints.
+
+Use this with attribute **transfer**. Attributes **ingress** and
+**egress** (`Attribute: Traffic direction`_) must not be used.
+
+- Default ``mask`` provides exact match behaviour.
+
+.. _table_rte_flow_item_ethdev:
+
+.. table:: ETHDEV
+
+   +----------+----------+---------------------------+
+   | Field    | Subfield | Value                     |
+   +==========+==========+===========================+
+   | ``spec`` | ``id``   | ethdev ID                 |
+   +----------+----------+---------------------------+
+   | ``last`` | ``id``   | upper range value         |
+   +----------+----------+---------------------------+
+   | ``mask`` | ``id``   | zeroed for wildcard match |
+   +----------+----------+---------------------------+
+
 Actions
 ~~~~~~~
 
diff --git a/doc/guides/rel_notes/release_21_11.rst 
b/doc/guides/rel_notes/release_21_11.rst
index f099b1cca2..91631adb4e 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -167,6 +167,8 @@ API Changes
    Also, make sure to start the actual text at the margin.
    =======================================================
 
+* ethdev: Added item ``ETHDEV`` to flow API.
+
 * cryptodev: The API rte_cryptodev_pmd_is_valid_dev is modified to
   rte_cryptodev_is_valid_dev as it can be used by the application as
   well as PMD to check whether the device is valid or not.
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst 
b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index bbef706374..6d5de5457c 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -3820,6 +3820,10 @@ This section lists supported pattern items and their 
attributes, if any.
 
 - ``conntrack``: match conntrack state.
 
+- ``ethdev``: match traffic at e-switch going from (sent by) the given ethdev
+
+  - ``id {unsigned}``: ethdev ID
+
 Actions list
 ^^^^^^^^^^^^
 
diff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c
index 8cb7a069c8..84eb61cb6c 100644
--- a/lib/ethdev/rte_flow.c
+++ b/lib/ethdev/rte_flow.c
@@ -100,6 +100,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] 
= {
        MK_FLOW_ITEM(GENEVE_OPT, sizeof(struct rte_flow_item_geneve_opt)),
        MK_FLOW_ITEM(INTEGRITY, sizeof(struct rte_flow_item_integrity)),
        MK_FLOW_ITEM(CONNTRACK, sizeof(uint32_t)),
+       MK_FLOW_ITEM(ETHDEV, sizeof(struct rte_flow_item_ethdev)),
 };
 
 /** Generate flow_action[] entry. */
diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
index 7b1ed7f110..880502098e 100644
--- a/lib/ethdev/rte_flow.h
+++ b/lib/ethdev/rte_flow.h
@@ -574,6 +574,15 @@ enum rte_flow_item_type {
         * @see struct rte_flow_item_conntrack.
         */
        RTE_FLOW_ITEM_TYPE_CONNTRACK,
+
+       /**
+        * [META]
+        *
+        * Matches traffic at e-switch going from (sent by) the given ethdev.
+        *
+        * @see struct rte_flow_item_ethdev
+        */
+       RTE_FLOW_ITEM_TYPE_ETHDEV,
 };
 
 /**
@@ -1799,6 +1808,24 @@ static const struct rte_flow_item_conntrack 
rte_flow_item_conntrack_mask = {
 };
 #endif
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ *
+ * Provides an ethdev ID for use with items which are as follows:
+ * RTE_FLOW_ITEM_TYPE_ETHDEV.
+ */
+struct rte_flow_item_ethdev {
+       uint16_t id; /**< Ethdev ID */
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_ETHDEV */
+#ifndef __cplusplus
+static const struct rte_flow_item_ethdev rte_flow_item_ethdev_mask = {
+       .id = 0xffff,
+};
+#endif
+
 /**
  * Matching pattern item definition.
  *
-- 
2.30.2

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