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The VLAN insertion capability (`wqe_vlan_insert`) was never enabled on all mlx5 devices. When VLAN TX offload is advertised but this capability is not supported, the driver uses inline headers to insert the VLAN tag. To support this, the driver used to set the `MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE` bit to enforce L2 inline mode when `wqe_vlan_insert` was not supported. Since the capability is disabled on all devices, this logic was always active, and the SQ flag has become redundant. L2 inline is enforced unconditionally for VLAN-tagged packets. The `skb_vlan_tag_present()` check in the else-if block of `mlx5e_sq_xmit_wqe()` is never true by this point in the TX flow, as the VLAN tag has already been inserted by the driver using inline headers. As a result, this code is never executed. Remove the redundant SQ state, dead VLAN insertion code block, and related logic. Signed-off-by: Carolina Jubran <cjubran@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/1752009387-13300-2-git-send-email-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.