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For some mlx5 HW models (CX4, CX4Lx), the VF driver needs to put part of the packet headers on the TX descriptor so the e-switch can do proper matching and steering. This is called "min-inline", it's advertized to the VF by the FW and also enforced on them by the HW, such that if they don't obey, their packets are dropped. SRIOV VF libmlx5 instances should take into account the min-inline value of their vports. For that end, we provide this value through the vendor response part of init_ucontext command. The min inline value is reported in a way which will let newer libmlx5 instances realize that they are running over an older kernel and act accordingly (e.g apply some educated guess). Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.