ip6_tunnel: add collect_md mode to IPv6 tunnels

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Similar to gre, vxlan, geneve tunnels allow IPIP6 and IP6IP6 tunnels
to operate in 'collect metadata' mode.
Unlike ipv4 code here it's possible to reuse ip6_tnl_xmit() function
for both collect_md and traditional tunnels.
bpf_skb_[gs]et_tunnel_key() helpers and ovs (in the future) are the users.

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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This commit is contained in:

Alexei Starovoitov 2016-09-15 13:00:30 -07:00 • committed by David S. Miller

parent cfc7381b30

commit 8d79266bc4

2 changed files with 134 additions and 45 deletions

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1

include/net/ip6_tunnel.h

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186

net/ipv6/ip6_tunnel.c

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