[PATCH 3/3] doc: adds the description for send to kernel

[Jiawei Wang]

This patch adds the description for send to kernel action support.

Signed-off-by: Jiawei Wang <jiaweiw at nvidia.com>
Acked-by: Ori Kam <orika at nvidia.com>
---
 doc/guides/nics/mlx5.rst           | 7 +++++++
 doc/guides/prog_guide/rte_flow.rst | 9 +++++++++
 lib/ethdev/rte_flow.h              | 1 -
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index eac67a7864..7bee57d9dd 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -165,6 +165,7 @@ Features
 - Sub-Function.
 - Matching on represented port.
 - Matching on aggregated affinity.
+- Send to kernel.
 
 
 Limitations
@@ -720,6 +721,12 @@ Limitations
   The flow engine of a process cannot move from active to standby mode
   if preceding active application rules are still present and vice versa.
 
+- Send to kernel action (``RTE_FLOW_ACTION_TYPE_SEND_TO_KERNEL``):
+
+  - Supports on non-root table.
+  - Supports on isolated mode.
+  - In HW steering (``dv_flow_en`` = 2):
+    - not supported on guest port.
 
 Statistics
 ----------
diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 5bc998a433..f8c130bc8b 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -3490,6 +3490,15 @@ The ``quota`` value is reduced according to ``mode`` setting.
    | ``RTE_FLOW_QUOTA_MODE_L3``      | Count packet bytes starting from L3 |
    +------------------+----------------------------------------------------+
 
+Action: ``SEND_TO_KERNEL``
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Send packets to the kernel, without going to userspace at all.
+
+The packets will be received by the kernel driver sharing the
+same device as the DPDK port on which this action is configured.
+
+
 Negative types
 ~~~~~~~~~~~~~~
 
diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
index 2ebb76dbc0..23addb4382 100644
--- a/lib/ethdev/rte_flow.h
+++ b/lib/ethdev/rte_flow.h
@@ -2931,7 +2931,6 @@ enum rte_flow_action_type {
 	 * The packets will be received by the kernel driver sharing
 	 * the same device as the DPDK port on which this action is configured.
 	 * This action mostly suits bifurcated driver model.
-	 * This is an ingress non-transfer action only.
 	 *
 	 * No associated configuration structure.
 	 */
-- 
2.18.1