doc: add fields enum for modify action in flow guide

Fix the documentation about the MODIFY_FIELD flow action.
1. Include the rte_flow_field_id enumeration reference to point
to the full list of all supported Field IDs available.
2. Correct the formatting of the MODIFY_FIELD action and the
destination/source field definition tables.

Fixes: 73b68f4c54a0 ("ethdev: introduce generic modify flow action")
Cc: stable@dpdk.org
Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index aec2ba1..e1b93ec 100644 (file)
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -2779,6 +2779,7 @@ can be used as both source and destination fields as set by ``field``.
 The immediate value ``RTE_FLOW_FIELD_VALUE`` (or a pointer to it
 ``RTE_FLOW_FIELD_POINTER``) is allowed as a source only.
 ``RTE_FLOW_FIELD_START`` is used to point to the beginning of a packet.
+See ``enum rte_flow_field_id`` for the list of supported fields.
 
 ``op`` selects the operation to perform on a destination field.
 - ``set`` copies the data from ``src`` field to ``dst`` field.
@@ -2812,12 +2813,15 @@ for ``RTE_FLOW_FIELD_VALUE`` and ``RTE_FLOW_FIELD_POINTER`` respectively.
 
 .. table:: MODIFY_FIELD
 
-   +-----------------------------------------+
+   +---------------+-------------------------+
    | Field         | Value                   |
    +===============+=========================+
    | ``op``        | operation to perform    |
+   +---------------+-------------------------+
    | ``dst``       | destination field       |
+   +---------------+-------------------------+
    | ``src``       | source field            |
+   +---------------+-------------------------+
    | ``width``     | number of bits to use   |
    +---------------+-------------------------+
 
@@ -2825,12 +2829,15 @@ for ``RTE_FLOW_FIELD_VALUE`` and ``RTE_FLOW_FIELD_POINTER`` respectively.
 
 .. table:: destination/source field definition
 
-   +--------------------------------------------------------------------------+
+   +---------------+----------------------------------------------------------+
    | Field         | Value                                                    |
    +===============+==========================================================+
    | ``field``     | ID: packet field, mark, meta, tag, immediate, pointer    |
+   +---------------+----------------------------------------------------------+
    | ``level``     | encapsulation level of a packet field or tag array index |
+   +---------------+----------------------------------------------------------+
    | ``offset``    | number of bits to skip at the beginning                  |
+   +---------------+----------------------------------------------------------+
    | ``value``     | immediate value or a pointer to this value               |
    +---------------+----------------------------------------------------------+