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| author | Jesper Dangaard Brouer <brouer@redhat.com> | 2018-01-03 11:26:14 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-01-05 15:21:22 -0800 |
| commit | 02dd3291b2f095bbc88e1d2628fd5bf2e92de69b (patch) | |
| tree | 510ccf29fe93e944ecf20ab403c1c3089f843c0f /include/uapi | |
| parent | e817f85652c14d78f170b18797e4c477c78949e0 (diff) | |
| download | linux-02dd3291b2f095bbc88e1d2628fd5bf2e92de69b.tar.bz2 | |
bpf: finally expose xdp_rxq_info to XDP bpf-programs
Now all XDP driver have been updated to setup xdp_rxq_info and assign
this to xdp_buff->rxq. Thus, it is now safe to enable access to some
of the xdp_rxq_info struct members.
This patch extend xdp_md and expose UAPI to userspace for
ingress_ifindex and rx_queue_index. Access happens via bpf
instruction rewrite, that load data directly from struct xdp_rxq_info.
* ingress_ifindex map to xdp_rxq_info->dev->ifindex
* rx_queue_index map to xdp_rxq_info->queue_index
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/bpf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index f2f8b36e2ad4..405317f9c064 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -899,6 +899,9 @@ struct xdp_md { __u32 data; __u32 data_end; __u32 data_meta; + /* Below access go though struct xdp_rxq_info */ + __u32 ingress_ifindex; /* rxq->dev->ifindex */ + __u32 rx_queue_index; /* rxq->queue_index */ }; enum sk_action { |