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skel is used. Global variables are used to store the result from bpf prog. addr_map, sock_result_map, and tcp_sock_result_map are gone. Instead, global variables listen_tp, srv_sa6, cli_tp,, srv_tp, listen_sk, srv_sk, and cli_sk are added. Because of that, bpf_addr_array_idx and bpf_result_array_idx are also no longer needed. CHECK() macro from test_progs.h is reused and bail as soon as a CHECK failure. shutdown() is used to ensure the previous data-ack is received. The bytes_acked, bytes_received, and the pkt_out_cnt checks are using "<" to accommodate the final ack may not have been received/sent. It is enough since it is not the focus of this test. The sk local storage is all initialized to 0xeB9F now, so the check_sk_pkt_out_cnt() always checks with the 0xeB9F base. It is to keep things simple. The next patch will reuse helpers from network_helpers.h to simplify things further. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200925000434.3858204-1-kafai@fb.com
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.