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This patch adds a few tcp related helper functions to bpf_tracing_net.h. They will be useful for both tcp-cc and network tracing related bpf progs. They have already been in the bpf_tcp_helpers.h. This change is needed to retire the bpf_tcp_helpers.h and consolidate all tests to vmlinux.h (i.e. bpf_tracing_net.h). Some of the helpers (tcp_sk and inet_csk) are also defined in bpf_cc_cubic.c and they are removed. While at it, remove the vmlinux.h from bpf_cc_cubic.c. bpf_tracing_net.h (which has vmlinux.h after this patch) is enough and will be consistent with the other tcp-cc tests in the later patches. The other TCP_* macro additions will be needed for the bpf_dctcp changes in the later patch. Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://lore.kernel.org/r/20240509175026.3423614-3-martin.lau@linux.dev Signed-off-by: Alexei Starovoitov <ast@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.