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| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2018-01-16 15:51:45 -0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-01-17 01:15:05 +0100 |
| commit | 0a2d28ff516c48a21c1e3be1ff7fba3e94248baa (patch) | |
| tree | 65ee7b65a852fcc14ed31d3b11bf88abc17ef296 /kernel | |
| parent | 4c38f74c9186e2bc32789ddab3a95ed384c695d7 (diff) | |
| download | talos-obmc-linux-0a2d28ff516c48a21c1e3be1ff7fba3e94248baa.tar.gz talos-obmc-linux-0a2d28ff516c48a21c1e3be1ff7fba3e94248baa.zip | |
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>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/offload.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/bpf/offload.c b/kernel/bpf/offload.c index 453785fa1881..a88cebf368bf 100644 --- a/kernel/bpf/offload.c +++ b/kernel/bpf/offload.c @@ -395,10 +395,8 @@ bool bpf_offload_dev_match(struct bpf_prog *prog, struct bpf_map *map) struct bpf_prog_offload *offload; bool ret; - if (!!bpf_prog_is_dev_bound(prog->aux) != !!bpf_map_is_dev_bound(map)) + if (!bpf_prog_is_dev_bound(prog->aux) || !bpf_map_is_dev_bound(map)) return false; - if (!bpf_prog_is_dev_bound(prog->aux)) - return true; down_read(&bpf_devs_lock); offload = prog->aux->offload; |
