netdev - split up filter.rst v2

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Message-Id: <20211119163215.971383-1-hch@lst.de>
Date:   Fri, 19 Nov 2021 17:32:10 +0100
From:   Christoph Hellwig <hch@....de>
To:     Jonathan Corbet <corbet@....net>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>
Cc:     Martin KaFai Lau <kafai@...com>, Song Liu <songliubraving@...com>,
        Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, linux-doc@...r.kernel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: split up filter.rst v2

Hi all,

for historical reasons filter.rst not only documents the classic Berkely
Packet Filter, but also contains some of the most fundamental eBPF
documentation.  This series moves the actual eBPF documentation into newly
created files under Documentation/bpf/ instead.  Note that the instruction
set document is still a bit of a mess due to all the references to classic
BPF, but if this split goes through I plan to start on working to clean
that up as well.

Changes since v1:
 - rebased to the latest bpf-next
 - just refernence BPF instead of eBPF in most code
 - split the patches further up
 - better link the BPF documentation from filter.rst


Diffstat:
 Documentation/bpf/index.rst           |    9 
 Documentation/bpf/instruction-set.rst |  467 +++++++++++++++
 Documentation/bpf/maps.rst            |   43 +
 Documentation/bpf/verifier.rst        |  529 +++++++++++++++++
 Documentation/networking/filter.rst   | 1036 ----------------------------------
 arch/arm/net/bpf_jit_32.c             |    2 
 arch/arm64/net/bpf_jit_comp.c         |    2 
 arch/sparc/net/bpf_jit_comp_64.c      |    2 
 arch/x86/net/bpf_jit_comp.c           |    4 
 kernel/bpf/core.c                     |    3 
 net/core/filter.c                     |   11 
 11 files changed, 1063 insertions(+), 1045 deletions(-)