diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2018-08-12 01:59:17 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-08-13 00:52:45 +0200 |
| commit | e8d2bec0457962e8f348a9a3627b398f7fe5c5fc (patch) | |
| tree | 9bda920c6a2940980aeb18a79b827b11e3f1cb0d /kernel/bpf/devmap.c | |
| parent | 9d6f417714c3aaf67b23ffdc1d2b036cce3ecc1c (diff) | |
| download | op-kernel-dev-e8d2bec0457962e8f348a9a3627b398f7fe5c5fc.zip op-kernel-dev-e8d2bec0457962e8f348a9a3627b398f7fe5c5fc.tar.gz | |
bpf: decouple btf from seq bpf fs dump and enable more maps
Commit a26ca7c982cb ("bpf: btf: Add pretty print support to
the basic arraymap") and 699c86d6ec21 ("bpf: btf: add pretty
print for hash/lru_hash maps") enabled support for BTF and
dumping via BPF fs for array and hash/lru map. However, both
can be decoupled from each other such that regular BPF maps
can be supported for attaching BTF key/value information,
while not all maps necessarily need to dump via map_seq_show_elem()
callback.
The basic sanity check which is a prerequisite for all maps
is that key/value size has to match in any case, and some maps
can have extra checks via map_check_btf() callback, e.g.
probing certain types or indicating no support in general. With
that we can also enable retrieving BTF info for per-cpu map
types and lpm.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Diffstat (limited to 'kernel/bpf/devmap.c')
| -rw-r--r-- | kernel/bpf/devmap.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c index d361fc1..a7c6620 100644 --- a/kernel/bpf/devmap.c +++ b/kernel/bpf/devmap.c @@ -484,6 +484,7 @@ const struct bpf_map_ops dev_map_ops = { .map_lookup_elem = dev_map_lookup_elem, .map_update_elem = dev_map_update_elem, .map_delete_elem = dev_map_delete_elem, + .map_check_btf = map_check_no_btf, }; static int dev_map_notification(struct notifier_block *notifier, |
