diff options
| author | John Fastabend | 2017-07-17 18:28:56 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-07-17 18:48:06 +0200 |
| commit | 546ac1ffb70d25b56c1126940e5ec639c4dd7413 (patch) | |
| tree | ee72376133d162b6bacd60cc6c061458a76be88c /include/uapi/linux/bpf.h | |
| parent | xdp: add trace event for xdp redirect (diff) | |
| download | kernel-qcow2-linux-546ac1ffb70d25b56c1126940e5ec639c4dd7413.tar.gz kernel-qcow2-linux-546ac1ffb70d25b56c1126940e5ec639c4dd7413.tar.xz kernel-qcow2-linux-546ac1ffb70d25b56c1126940e5ec639c4dd7413.zip | |
bpf: add devmap, a map for storing net device references
Device map (devmap) is a BPF map, primarily useful for networking
applications, that uses a key to lookup a reference to a netdevice.
The map provides a clean way for BPF programs to build virtual port
to physical port maps. Additionally, it provides a scoping function
for the redirect action itself allowing multiple optimizations. Future
patches will leverage the map to provide batching at the XDP layer.
Another optimization/feature, that is not yet implemented, would be
to support multiple netdevices per key to support efficient multicast
and broadcast support.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/bpf.h')
| -rw-r--r-- | include/uapi/linux/bpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 4dbb7a3f4677..ecbb0e7e15bc 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -104,6 +104,7 @@ enum bpf_map_type { BPF_MAP_TYPE_LPM_TRIE, BPF_MAP_TYPE_ARRAY_OF_MAPS, BPF_MAP_TYPE_HASH_OF_MAPS, + BPF_MAP_TYPE_DEVMAP, }; enum bpf_prog_type { |