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bpf: move knowledge about post-translation offsets out of verifier

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Use the fact that verifier ops are now separate from program
ops to define a separate set of callbacks for verification of
already translated programs.

Since we expect the analyzer ops to be defined only for
a small subset of all program types initialize their array
by hand (don't use linux/bpf_types.h).

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2017-10-16 16:40:55 -07:00 • committed by David S. Miller
parent 00176a34d9
commit 4f9218aaf8
3 changed files with 59 additions and 39 deletions
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3
include/linux/bpf.h
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@ -291,6 +291,9 @@ DECLARE_PER_CPU(int, bpf_prog_active);
#undef BPF_PROG_TYPE
#undef BPF_MAP_TYPE
extern const struct bpf_verifier_ops tc_cls_act_analyzer_ops;
extern const struct bpf_verifier_ops xdp_analyzer_ops;
struct bpf_prog *bpf_prog_get(u32 ufd);
struct bpf_prog *bpf_prog_get_type(u32 ufd, enum bpf_prog_type type);
struct bpf_prog * __must_check bpf_prog_add(struct bpf_prog *prog, int i);