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084ceda7de
Add helpers for implementing .ndo_xdp_xmit(). Same as for XDP_TX, accumulate up to 16 DMA-mapped frames on the stack, then flush. If DMA mapping is failed for some reason, don't try mapping further frames, but still flush what was already prepared. DMA address of a head frame is stored in its headroom, assuming it has enough of it for an 8 (or 4) byte value. In addition to @prep and @xmit driver callbacks in XDP_TX, xmit also needs @finalize to kick the XDPSQ after filling. Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.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 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.