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 <je...@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
