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7e41df5dbb
This patch adds a few optnames for bpf_setsockopt: SO_REUSEADDR, IPV6_AUTOFLOWLABEL, TCP_MAXSEG, TCP_NODELAY, and TCP_THIN_LINEAR_TIMEOUTS. Thanks to the previous patches of this set, all additions can reuse the sk_setsockopt(), do_ipv6_setsockopt(), and do_tcp_setsockopt(). The only change here is to allow them in bpf_setsockopt. The bpf prog has been able to read all members of a sk by using PTR_TO_BTF_ID of a sk. The optname additions here can also be read by the same approach. Meaning there is a way to read the values back. These optnames can also be added to bpf_getsockopt() later with another patch set that makes the bpf_getsockopt() to reuse the sock_getsockopt(), tcp_getsockopt(), and ip[v6]_getsockopt(). Thus, this patch does not add more duplicated code to bpf_getsockopt() now. Reviewed-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/r/20220817061841.4181642-1-kafai@fb.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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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.