bpf: Generalize caching for sk_storage.

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Provide the a ability to define local storage caches on a per-object
type basis. The caches and caching indices for different objects should
not be inter-mixed as suggested in:

  https://lore.kernel.org/bpf/20200630193441.kdwnkestulg5erii@kafai-mbp.dhcp.thefacebook.com/

  "Caching a sk-storage at idx=0 of a sk should not stop an
  inode-storage to be cached at the same idx of a inode."

Signed-off-by: KP Singh <kpsingh@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200825182919.1118197-3-kpsingh@chromium.org

...

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KP Singh 2020-08-25 20:29:14 +02:00 • committed by Alexei Starovoitov

parent 1f00d375af

commit 4cc9ce4e73

2 changed files with 34 additions and 16 deletions

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19

include/net/bpf_sk_storage.h

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31

net/core/bpf_sk_storage.c

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