doc: describe ixgbe devargs fiber_sdp3_no_tx_disable
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Commit Message
The devargs option for the IXGBE driver is introduced in order to
inform the driver to skip checking SDP3 as an indicator of laser
enable/disable for SFP modules.
Signed-off-by: Jeff Daly <jeffd@silicom-usa.com>
---
doc/guides/nics/ixgbe.rst | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
Comments
> -----Original Message-----
> From: Jeff Daly <jeffd@silicom-usa.com>
> Sent: Wednesday, April 27, 2022 10:21 PM
> To: Wang, Haiyue <haiyue.wang@intel.com>
> Cc: dev@dpdk.org
> Subject: [PATCH] doc: describe ixgbe devargs fiber_sdp3_no_tx_disable
>
> The devargs option for the IXGBE driver is introduced in order to inform the
> driver to skip checking SDP3 as an indicator of laser enable/disable for SFP
> modules.
>
> Signed-off-by: Jeff Daly <jeffd@silicom-usa.com>
> ---
> doc/guides/nics/ixgbe.rst | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/doc/guides/nics/ixgbe.rst b/doc/guides/nics/ixgbe.rst index
> 82fa453fa28e..ad1a3da6101e 100644
> --- a/doc/guides/nics/ixgbe.rst
> +++ b/doc/guides/nics/ixgbe.rst
> @@ -101,6 +101,23 @@ To guarantee the constraint, capabilities in
> dev_conf.rxmode.offloads will be ch
>
> fdir_conf->mode will also be checked.
>
> +Disable SDP3 TX_DISABLE for Fiber Links
> +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> +
> +The following ``devargs`` option can be enabled at runtime. It must be
> +passed as part of EAL arguments. For example,
> +
> +.. code-block:: console
> +
> + dpdk-testpmd -a fiber_sdp3_no_tx_disable=1 -- -i
> +
> +- ``fiber_sdp3_no_tx_disable`` (default **0**)
> +
> + Not all IXGBE implementations with SFP cages use the SDP3 signal as
> + TX_DISABLE as a means to disable the laser on fiber SFP modules.
> + This option informs the driver that in this case, SDP3 is not to be
> + used as a check for link up by testing for laser on/off.
> +
> VF Runtime Options
> ^^^^^^^^^^^^^^^^^^
>
> --
> 2.25.1
Please squash the document update into the code path.
@@ -101,6 +101,23 @@ To guarantee the constraint, capabilities in dev_conf.rxmode.offloads will be ch
fdir_conf->mode will also be checked.
+Disable SDP3 TX_DISABLE for Fiber Links
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The following ``devargs`` option can be enabled at runtime. It must
+be passed as part of EAL arguments. For example,
+
+.. code-block:: console
+
+ dpdk-testpmd -a fiber_sdp3_no_tx_disable=1 -- -i
+
+- ``fiber_sdp3_no_tx_disable`` (default **0**)
+
+ Not all IXGBE implementations with SFP cages use the SDP3 signal as
+ TX_DISABLE as a means to disable the laser on fiber SFP modules.
+ This option informs the driver that in this case, SDP3 is not to be
+ used as a check for link up by testing for laser on/off.
+
VF Runtime Options
^^^^^^^^^^^^^^^^^^