bpf: Add PTR_TO_SOCKET verifier type

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Teach the verifier a little bit about a new type of pointer, a
PTR_TO_SOCKET. This pointer type is accessed from BPF through the
'struct bpf_sock' structure.

Signed-off-by: Joe Stringer <joe@wand.net.nz>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Joe Stringer 2018-10-02 13:35:33 -07:00 • committed by Daniel Borkmann

parent 840b9615d6

commit c64b798328

4 changed files with 160 additions and 26 deletions

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34

include/linux/bpf.h

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2

include/linux/bpf_verifier.h

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120

kernel/bpf/verifier.c

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30

net/core/filter.c

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