Daniel Borkmann 4018ab1875
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 >
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4018ab1875