- SR-IOV VF
- NUMA support
- Multi queue set support (up to 96 queues (12 queue sets)) per port
+- Skip data bytes
Supported ThunderX SoCs
-----------------------
for details.
To compile the ThunderX NICVF PMD for Linux arm64 gcc,
-use arm64-thunderx-linuxapp-gcc as target.
+use arm64-thunderx-linux-gcc as target.
Linux
-----
.. code-block:: console
- ./arm64-thunderx-linuxapp-gcc/app/testpmd -l 0-3 -n 4 -w 0002:01:00.2 \
+ ./arm64-thunderx-linux-gcc/app/testpmd -l 0-3 -n 4 -w 0002:01:00.2 \
-- -i --no-flush-rx \
--port-topology=loop
The nicvf thunderx driver will make use of attached secondary VFs automatically during the interface configuration stage.
+
+Module params
+--------------
+
+skip_data_bytes
+~~~~~~~~~~~~~~~
+This feature is used to create a hole between HEADROOM and actual data. Size of hole is specified
+in bytes as module param("skip_data_bytes") to pmd.
+This scheme is useful when application would like to insert vlan header without disturbing HEADROOM.
+
+Example:
+ .. code-block:: console
+
+ -w 0002:01:00.2,skip_data_bytes=8
+
Limitations
-----------
The ThunderX SoC family NICs support up to 12 segments per packet when working
in scatter/gather mode. So, setting MTU will result with ``EINVAL`` when the
frame size does not fit in the maximum number of segments.
+
+skip_data_bytes
+~~~~~~~~~~~~~~~
+
+Maximum limit of skip_data_bytes is 128 bytes and number of bytes should be multiple of 8.