mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-05 21:44:23 -04:00
ddc87e7d47
Use page_pool_set_dma_addr() to store the DMA address of a page inside struct page, in order to avoid passing struct mlx5e_dma_info to XDP handlers. Previously, struct mlx5e_dma_info was used to pass both the DMA address and the page, and it worked well for the single-fragment case. When XDP multi buffer is in use, and a fragmented xdp_frame has to be transmitted, the driver needs to know the DMA addresses of fragments, however, the array of fragments in struct skb_shared_info doesn't contain them. In order to pass the DMA addresses, the driver puts them into struct page itself, which is accessible from the array of fragments in struct skb_shared_info. The existing XDP handlers are modified to remove the dependency on struct mlx5e_dma_info. Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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 Restructured Text 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.