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bpf: offload: make bpf_offload_dev_match() reject host+host case
Daniel suggests it would be more logical for bpf_offload_dev_match() to return false is either the program or the map are not offloaded, rather than treating the both not offloaded case as a "matching CPU/host device". This makes no functional difference today, since verifier only calls bpf_offload_dev_match() when one of the objects is offloaded. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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1 changed files with 1 additions and 3 deletions
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@ -395,10 +395,8 @@ bool bpf_offload_dev_match(struct bpf_prog *prog, struct bpf_map *map)
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struct bpf_prog_offload *offload;
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bool ret;
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if (!!bpf_prog_is_dev_bound(prog->aux) != !!bpf_map_is_dev_bound(map))
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if (!bpf_prog_is_dev_bound(prog->aux) || !bpf_map_is_dev_bound(map))
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return false;
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if (!bpf_prog_is_dev_bound(prog->aux))
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return true;
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down_read(&bpf_devs_lock);
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offload = prog->aux->offload;
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