gre: add collect_md mode to ERSPAN tunnel

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Similar to gre, vxlan, geneve, ipip tunnels, allow ERSPAN 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.

Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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William Tu 2017-08-25 09:21:28 -07:00 • committed by David S. Miller

parent 862a03c35e

commit 1a66a836da

2 changed files with 101 additions and 5 deletions

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4

include/net/ip_tunnels.h

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102

net/ipv4/ip_gre.c

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