[v2] doc: update qede PMD guide
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Commit Message
- Add note for sharing an adapter between DPDK and Linux drivers.
- Update the firmware version in example.
- Add Config note for potential error due to lack of memzone desciptor
count.
Signed-off-by: Rasesh Mody <rmody@marvell.com>
---
doc/guides/nics/qede.rst | 27 ++++++++++++++++++++++-----
1 file changed, 22 insertions(+), 5 deletions(-)
Comments
On 11/22/2019 11:31 PM, Rasesh Mody wrote:
> - Add note for sharing an adapter between DPDK and Linux drivers.
> - Update the firmware version in example.
> - Add Config note for potential error due to lack of memzone desciptor
> count.
>
> Signed-off-by: Rasesh Mody <rmody@marvell.com>
Applied to dpdk-next-net/master, thanks.
@@ -70,6 +70,12 @@ Co-existence considerations
to the PFs of a given adapter and either qede PMD or Linux drivers
(qed and qede) can be bound to the VFs of the adapter.
+- For sharing an adapter between DPDK and Linux drivers, SRIOV needs
+ to be enabled. Bind all the PFs to Linux Drivers(qed/qede). Create
+ a VF on PFs where DPDK is desired and bind these VFs to qede_pmd.
+ Binding of PFs simultaneously to DPDK and Linux drivers on a given
+ adapter is not supported.
+
Supported QLogic Adapters
-------------------------
@@ -82,9 +88,7 @@ Prerequisites
inbox in certain newer Linux distros under the standard directory
``E.g. /lib/firmware/qed/qed_init_values-8.40.33.0.bin``.
If the required firmware files are not available then download it from
- `linux-firmware git repository <http://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/qed>`_
- or `QLogic Driver Download Center <http://driverdownloads.qlogic.com/QLogicDriverDownloads_UI/DefaultNewSearch.aspx>`_.
- To download firmware file from QLogic website, select adapter category, model and DPDK Poll Mode Driver.
+ `linux-firmware git repository <http://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/qed>`_.
- Requires the NIC be updated minimally with **8.30.x.x** Management firmware(MFW) version supported for that NIC.
It is highly recommended that the NIC be updated with the latest available management firmware version to get latest feature set.
@@ -99,7 +103,6 @@ Prerequisites
`QLogic Driver Download Center <http://driverdownloads.qlogic.com/QLogicDriverDownloads_UI/DefaultNewSearch.aspx>`_.
For downloading PF driver, select adapter category, model and Linux distro.
-
Performance note
~~~~~~~~~~~~~~~~
@@ -126,12 +129,26 @@ enabling debugging options may affect system performance.
- ``CONFIG_RTE_LIBRTE_QEDE_FW`` (default **""**)
Gives absolute path of firmware file.
- ``Eg: "/lib/firmware/qed/qed_init_values-8.37.7.0.bin"``
+ ``Eg: "/lib/firmware/qed/qed_init_values-8.40.33.0.bin"``
Empty string indicates driver will pick up the firmware file
from the default location /lib/firmware/qed.
CAUTION this option is more for custom firmware, it is not
recommended for use under normal condition.
+Config notes
+~~~~~~~~~~~~
+
+When there are multiple adapters and/or large number of Rx/Tx queues
+configured on the adapters, the default (2560) number of memzone
+descriptors may not be enough. Please increase the number of memzone
+descriptors to a higher number as needed. When sufficient number of
+memzone descriptors are not configured, user can potentially run into
+following error.
+
+ .. code-block:: console
+
+ EAL: memzone_reserve_aligned_thread_unsafe(): No more room in config
+
Driver compilation and testing
------------------------------