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92e68195eb
On the RX path we follow the "drop if allocation of replacement buffer fails" rule. With XDP we extended that to the TX action, so if XDP prog returned TX but allocation of replacement RX buffer failed, we will drop the packet. To improve our XDP TX performance extend the idea of rings being always full to XDP TX rings. Pre-fill the XDP TX rings with RX buffers, and when XDP prog returns TX action swap the RX buffer with the next buffer from the TX ring. XDP TX complete will no longer free the buffers but let them sit on the TX ring and wait for swap with RX buffer, instead. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.