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Daniel Borkmann eb6211d360 bpf, samples: fix build warning in cookie_uid_helper_example 
Fix the following warnings triggered by 51570a5ab2 ("A Sample of
using socket cookie and uid for traffic monitoring"):

  In file included from /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c:54:0:
  /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c: In function 'prog_load':
  /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c:119:27: warning: overflow in implicit constant conversion [-Woverflow]
     -32 + offsetof(struct stats, uid)),
                           ^
  /home/foo/net-next/samples/bpf/libbpf.h:135:12: note: in definition of macro 'BPF_STX_MEM'
   .off   = OFF,     \
            ^
  /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c:121:27: warning: overflow in implicit constant conversion [-Woverflow]
     -32 + offsetof(struct stats, packets), 1),
                           ^
  /home/foo/net-next/samples/bpf/libbpf.h:155:12: note: in definition of macro 'BPF_ST_MEM'
   .off   = OFF,     \
            ^
  /home/foo/net-next/samples/bpf/cookie_uid_helper_example.c:129:27: warning: overflow in implicit constant conversion [-Woverflow]
     -32 + offsetof(struct stats, bytes)),
                           ^
  /home/foo/net-next/samples/bpf/libbpf.h:135:12: note: in definition of macro 'BPF_STX_MEM'
   .off   = OFF,     \
            ^
  HOSTLD  /home/foo/net-next/samples/bpf/per_socket_stats_example

Fixes: 51570a5ab2 ("A Sample of using socket cookie and uid for traffic monitoring")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
History 2017-05-02 09:29:35 -04:00
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README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

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.