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net: geneve: support IPv4/IPv6 as inner protocol

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This patch adds support for encapsulating IPv4/IPv6 within GENEVE.

In order to use this, a new IFLA_GENEVE_INNER_PROTO_INHERIT flag needs
to be provided at device creation. This property cannot be changed for
the time being.

In case IP traffic is received on a non-tun device the drop count is
increased.

Signed-off-by: Eyal Birger <eyal.birger@gmail.com>
Link: https://lore.kernel.org/r/20220316061557.431872-1-eyal.birger@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Eyal Birger 2022-03-16 08:15:57 +02:00 • committed by Paolo Abeni
parent 82192c49f3
commit 435fe1c0c1
2 changed files with 64 additions and 19 deletions
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1
include/uapi/linux/if_link.h
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@ -842,6 +842,7 @@ enum {
IFLA_GENEVE_LABEL,
IFLA_GENEVE_TTL_INHERIT,
IFLA_GENEVE_DF,
IFLA_GENEVE_INNER_PROTO_INHERIT,
__IFLA_GENEVE_MAX
};
#define IFLA_GENEVE_MAX (__IFLA_GENEVE_MAX - 1)