Not much to be done here:

- add SPDX header;
- use a document title from existing text;
- adjust a chapter markup;
- add to networking/index.rst.
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>