65ddc82d3b
This patch changes bpf_getsockopt(SOL_SOCKET) to reuse sk_getsockopt(). It removes all duplicated code from bpf_getsockopt(SOL_SOCKET). Before this patch, there were some optnames available to bpf_setsockopt(SOL_SOCKET) but missing in bpf_getsockopt(SOL_SOCKET). It surprises users from time to time. For example, SO_REUSEADDR, SO_KEEPALIVE, SO_RCVLOWAT, and SO_MAX_PACING_RATE. This patch automatically closes this gap without duplicating more code. The only exception is SO_BINDTODEVICE because it needs to acquire a blocking lock. Thus, SO_BINDTODEVICE is not supported. Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://lore.kernel.org/r/20220902002912.2894040-1-kafai@fb.com 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 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.