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BPF selftest fails to build with below error:
CLNG-BPF [test_progs] lsm_cgroup.bpf.o
progs/lsm_cgroup.c:105:21: error: variable has incomplete type 'struct sockaddr_ll'
105 | struct sockaddr_ll sa = {};
| ^
progs/lsm_cgroup.c:105:9: note: forward declaration of 'struct sockaddr_ll'
105 | struct sockaddr_ll sa = {};
| ^
1 error generated.
lsm_cgroup selftest requires sockaddr_ll structure which is not there
in vmlinux.h when the kernel is built with CONFIG_PACKET=m.
Enabling CONFIG_PACKET=y ensures that sockaddr_ll is available in vmlinux,
allowing it to be captured in the generated vmlinux.h for bpf selftests.
Reported-by: Sachin P Bappalige <sachinpb@linux.ibm.com>
Signed-off-by: Saket Kumar Bhaskar <skb99@linux.ibm.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20250707071735.705137-1-skb99@linux.ibm.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 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.