https://bugs.dpdk.org/show_bug.cgi?id=289
Bug ID: 289
Summary: mlx5: 100G interface capability not recognized
Product: DPDK
Version: 17.11
Hardware: All
OS: All
Status: CONFIRMED
Severity: normal
Priority: Normal
Component: ethdev
Assignee: dev@dpdk.org
Reporter: srinivas.nara...@att.com
Target Milestone: ---
mlx5_link_update uses the newer ethtool command ETHTOOL_GLINKSETTINGS to
determine interface capabilities but falls back to the older (deprecated)
ETHTOOL_GSET command if the new method fails for any reason. The older method
only supports reporting of capabilities up to 40G.
However, mlx5_link_update_unlocked_gs can return a failure for a number of
reasons (including the link being down). Using the older method in cases of
transient failure of the method can result in reporting of reduced capabilities
to the application.
The older method (mlx5_link_update_unlocked_gset) should only be invoked if the
newer method returns EOPNOTSUPP.
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