bpf: introduce bpf_clone_redirect() helper
authorAlexei Starovoitov <ast@plumgrid.com>
Tue, 2 Jun 2015 23:03:14 +0000 (16:03 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 4 Jun 2015 03:16:58 +0000 (20:16 -0700)
commit3896d655f4d491c67d669a15f275a39f713410f8
tree2443f64281b9acf673b4b8fc02bc5e7aeeacae5f
parent613d8c188ffc6f24b7a64dbce74a1b78017c0238
bpf: introduce bpf_clone_redirect() helper

Allow eBPF programs attached to classifier/actions to call
bpf_clone_redirect(skb, ifindex, flags) helper which will
mirror or redirect the packet by dynamic ifindex selection
from within the program to a target device either at ingress
or at egress. Can be used for various scenarios, for example,
to load balance skbs into veths, split parts of the traffic
to local taps, etc.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/uapi/linux/bpf.h
net/core/filter.c