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[$] The intersection of mlx5, netdev, and lockdown
Monday December 18, 2023. 04:01 PM , from LWN.net
The NVIDIA Mellanox ConnectX HW family of adapters is a complex beast,
supporting networking, InfiniBand, RDMA, and more. As a result, the mlx5 kernel driver that supports this hardware is also complex, as is the interface that it provides to user space. The mlx5 developers have, for a while now, been proposing the addition of a new control interface, in the form of a separate virtual device exported by the kernel, that would make vast amounts of debugging information available. This driver has encountered some significant opposition on its way toward the mainline, though, raising a number of questions about appropriate interfaces and when subsystem maintainers have veto power over submissions.
https://lwn.net/Articles/955001/
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