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authorJakub Kicinski <jakub.kicinski@netronome.com>2017-12-27 18:39:07 -0800
committerDaniel Borkmann <daniel@iogearbox.net>2017-12-31 16:12:23 +0100
commitad8ad79f4f6078f456792f7f8d344da2be9bc74f (patch)
tree0381e442d0e7c6271548366931ab662806711627 /Documentation/vm
parentce3b9db4db0e0e2b9761c56d08615ea0159e4a1b (diff)
bpf: offload: free program id when device disappears
Bound programs are quite useless after their device disappears. They are simply waiting for reference count to go to zero, don't list them in BPF_PROG_GET_NEXT_ID by freeing their ID early. Note that orphaned offload programs will return -ENODEV on BPF_OBJ_GET_INFO_BY_FD so user will never see ID 0. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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