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6caf9efaa1
Verify that out-of-band packets are silently dropped before they reach the redirection logic. The idea is to test with a 2 byte long send(). Should a MSG_OOB flag be in use, only the last byte will be treated as out-of-band. Test fails if verd_mapfd indicates a wrong number of packets processed (e.g. if OOB wasn't dropped at the source) or if it was possible to recv() MSG_OOB from the mapped socket, or if any stale OOB data have been left reachable from the unmapped socket. Signed-off-by: Michal Luczaj <mhal@rbox.co> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Tested-by: Jakub Sitnicki <jakub@cloudflare.com> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/20240713200218.2140950-5-mhal@rbox.co |
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| .get_maintainer.ignore | ||
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| README | ||
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.