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author | John Fastabend <john.fastabend@gmail.com> | 2017-07-17 09:28:56 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2017-07-17 09:48:06 -0700 |
commit | 546ac1ffb70d25b56c1126940e5ec639c4dd7413 (patch) | |
tree | ee72376133d162b6bacd60cc6c061458a76be88c /tools/testing/selftests/ptrace | |
parent | 5acaee0a8964c9bab7775ab8bedcd1f66a2a1011 (diff) |
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 'tools/testing/selftests/ptrace')
0 files changed, 0 insertions, 0 deletions