diff options
| author | John Fastabend <john.fastabend@gmail.com> | 2017-07-17 09:28:56 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-17 09:48:06 -0700 |
| commit | 546ac1ffb70d25b56c1126940e5ec639c4dd7413 (patch) | |
| tree | ee72376133d162b6bacd60cc6c061458a76be88c /kernel/bpf/Makefile | |
| 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 'kernel/bpf/Makefile')
| -rw-r--r-- | kernel/bpf/Makefile | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/bpf/Makefile b/kernel/bpf/Makefile index e1e5e658f2db..48e92705be59 100644 --- a/kernel/bpf/Makefile +++ b/kernel/bpf/Makefile @@ -2,6 +2,9 @@ obj-y := core.o obj-$(CONFIG_BPF_SYSCALL) += syscall.o verifier.o inode.o helpers.o obj-$(CONFIG_BPF_SYSCALL) += hashtab.o arraymap.o percpu_freelist.o bpf_lru_list.o lpm_trie.o map_in_map.o +ifeq ($(CONFIG_NET),y) +obj-$(CONFIG_BPF_SYSCALL) += devmap.o +endif ifeq ($(CONFIG_PERF_EVENTS),y) obj-$(CONFIG_BPF_SYSCALL) += stackmap.o endif |