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Currently, skbs generated by pktgen always have their reference count incremented before transmission, causing their reference count to be always greater than 1, leading to two issues: 1. Only the code paths for shared skbs can be tested. 2. In certain situations, skbs can only be released by pktgen. To enhance testing comprehensiveness, we are introducing the "SHARED" flag to indicate whether an SKB is shared. This flag is enabled by default, aligning with the current behavior. However, disabling this flag allows skbs with a reference count of 1 to be transmitted. So we can test non-shared skbs and code paths where skbs are released within the stack. Signed-off-by: Liang Chen <liangchen.linux@gmail.com> Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com> Link: https://lore.kernel.org/r/20230920125658.46978-2-liangchen.linux@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.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.