diff options
| author |   Stanislav Fomichev <sdf@google.com> | 2023-09-13 10:13:48 -0700 |
|---|---|---|
| committer |   Martin KaFai Lau <martin.lau@kernel.org> | 2023-09-15 11:26:58 -0700 |
| commit | fc45c5b642dbcac3bb10f4f904e4b863233e5369 (patch) | |
| tree | 289161c906ade0bdf3b6d7df0d65912b2756af6b /kernel/bpf/offload.c | |
| parent | xsk: add multi-buffer support for sockets sharing umem (diff) | |
| download | wireguard-linux-fc45c5b642dbcac3bb10f4f904e4b863233e5369.tar.xz wireguard-linux-fc45c5b642dbcac3bb10f4f904e4b863233e5369.zip | |
bpf: make it easier to add new metadata kfunc
No functional changes.
Instead of having hand-crafted code in bpf_dev_bound_resolve_kfunc,
move kfunc <> xmo handler relationship into XDP_METADATA_KFUNC_xxx.
This way, any time new kfunc is added, we don't have to touch
bpf_dev_bound_resolve_kfunc.
Also document XDP_METADATA_KFUNC_xxx arguments since we now have
more than two and it might be confusing what is what.
Cc: netdev@vger.kernel.org
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20230913171350.369987-2-sdf@google.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'kernel/bpf/offload.c')
| -rw-r--r-- | kernel/bpf/offload.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/bpf/offload.c b/kernel/bpf/offload.c index 3e4f2ec1af06..6aa6de8d715d 100644 --- a/kernel/bpf/offload.c +++ b/kernel/bpf/offload.c @@ -845,10 +845,11 @@ void *bpf_dev_bound_resolve_kfunc(struct bpf_prog *prog, u32 func_id) if (!ops) goto out; - if (func_id == bpf_xdp_metadata_kfunc_id(XDP_METADATA_KFUNC_RX_TIMESTAMP)) - p = ops->xmo_rx_timestamp; - else if (func_id == bpf_xdp_metadata_kfunc_id(XDP_METADATA_KFUNC_RX_HASH)) - p = ops->xmo_rx_hash; +#define XDP_METADATA_KFUNC(name, _, xmo) \ + if (func_id == bpf_xdp_metadata_kfunc_id(name)) p = ops->xmo; + XDP_METADATA_KFUNC_xxx +#undef XDP_METADATA_KFUNC + out: up_read(&bpf_devs_lock); |