tree 8ffadc3b984132b1cd44a8ab53e7fce257a8198f
parent 8eb3b99554b82da968d1fbc00df9f3156c5e2d63
author Daniel Borkmann <daniel@iogearbox.net> 1457488805 +0100
committer David S. Miller <davem@davemloft.net> 1457727267 -0500

bpf: support flow label for bpf_skb_{set, get}_tunnel_key

This patch extends bpf_tunnel_key with a tunnel_label member, that maps
to ip_tunnel_key's label so underlying backends like vxlan and geneve
can propagate the label to udp_tunnel6_xmit_skb(), where it's being set
in the IPv6 header. It allows for having 20 more bits to encode/decode
flow related meta information programmatically. Tested with vxlan and
geneve.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>