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Peter Oskolkov 3bd0b15281 bpf: add handling of BPF_LWT_REROUTE to lwt_bpf.c
This patch builds on top of the previous patch in the patchset,
which added BPF_LWT_ENCAP_IP mode to bpf_lwt_push_encap. As the
encapping can result in the skb needing to go via a different
interface/route/dst, bpf programs can indicate this by returning
BPF_LWT_REROUTE, which triggers a new route lookup for the skb.

v8 changes: fix kbuild errors when LWTUNNEL_BPF is builtin, but
   IPV6 is a module: as LWTUNNEL_BPF can only be either Y or N,
   call IPV6 routing functions only if they are built-in.

v9 changes:
   - fixed a kbuild test robot compiler warning;
   - call IPV6 routing functions via ipv6_stub.

v10 changes: removed unnecessary IS_ENABLED and pr_warn_once.

v11 changes: fixed a potential dst leak.

Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-02-13 18:27:55 -08:00
arch
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drivers bpf: offload: add priv field for drivers 2019-02-12 17:07:09 +01:00
firmware
fs
include ipv6_stub: add ipv6_route_input stub/proxy. 2019-02-13 18:27:55 -08:00
init
ipc
kernel bpf: offload: add priv field for drivers 2019-02-12 17:07:09 +01:00
lib
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net bpf: add handling of BPF_LWT_REROUTE to lwt_bpf.c 2019-02-13 18:27:55 -08:00
samples
scripts
security
sound
tools tools: bpftool: doc, add text about feature-subcommand 2019-02-12 17:06:18 +01:00
usr
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Linux kernel
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There are several guides for kernel developers and users. These guides can
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In order to build the documentation, use ``make htmldocs`` or
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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
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