Alexei Starovoitov cfc7381b30
ip_tunnel: add collect_md mode to IPIP tunnel ...
Similar to gre, vxlan, geneve tunnels allow IPIP tunnels to
operate in 'collect metadata' mode.
bpf_skb_[gs]et_tunnel_key() helpers can make use of it right away.
ovs can use it as well in the future (once appropriate ovs-vport
abstractions and user apis are added).
Note that just like in other tunnels we cannot cache the dst,
since tunnel_info metadata can be different for every packet.
Signed-off-by: Alexei Starovoitov <ast@kernel.org >
Acked-by: Thomas Graf <tgraf@suug.ch >
Acked-by: Daniel Borkmann <daniel@iogearbox.net >
Signed-off-by: David S. Miller <davem@davemloft.net >
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cfc7381b30