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Alexander Lobakin
fcc680a647
The main reason for this change was to allow mixing pages from different &page_pools within one &xdp_buff/&xdp_frame. Why not? With stuff like devmem and io_uring zerocopy Rx, it's required to have separate PPs for header buffers and payload buffers. Adjust xdp_return_frame_bulk() and page_pool_put_netmem_bulk(), so that they won't be tied to a particular pool. Let the latter create a separate bulk of pages which's PP is different from the first netmem of the bulk and process it after the main loop. This greatly optimizes xdp_return_frame_bulk(): no more hashtable lookups and forced flushes on PP mismatch. Also make xdp_flush_frame_bulk() inline, as it's just one if + function call + one u32 read, not worth extending the call ladder. Co-developed-by: Toke Høiland-Jørgensen <toke@redhat.com> # iterative Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Suggested-by: Jakub Kicinski <kuba@kernel.org> # while (count) Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Link: https://patch.msgid.link/20241211172649.761483-2-aleksander.lobakin@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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.