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| Filename | Latest commit message | Latest commit date |
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7f3249fb12
Nikita V. Shirokov says: ==================== In this patch series i'm add new bpf helper which allow to manupulate xdp's data_end pointer. right now only "shrinking" (reduce packet's size by moving pointer) is supported (and i see no use case for "growing"). Main use case for such helper is to be able to generate controll (ICMP) messages from XDP context. such messages usually contains first N bytes from original packets as a payload, and this is exactly what this helper would allow us to do (see patch 3 for sample program, where we generate ICMP "packet too big" message). This helper could be usefull for load balancing applications where after additional encapsulation, resulting packet could be bigger then interface MTU. Aside from new helper this patch series contains minor changes in device drivers (for ones which requires), so they would recal packet's length not only when head pointer was adjusted, but if tail's one as well. v2->v3: * adding missed "signed off by" in v2 v1->v2: * fixed kbuild warning * made offset eq 0 invalid for xdp_bpf_adjust_tail * splitted bpf_prog_test_run fix and selftests in sep commits * added SPDX licence where applicable * some reshuffling in patches order (tests now in the end) ==================== Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> |
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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 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.