On Tue, Sep 29, 2015 at 10:52 AM, Jiri Benc <jb...@redhat.com> wrote:
> Store tunnel protocol (AF_INET or AF_INET6) in sw_flow_key. This field now
> also acts as an indicator whether the flow contains tunnel data (this was
> previously indicated by tun_key.u.ipv4.dst being set but with IPv6 addresses
> in an union with IPv4 ones this won't work anymore).
>
> The new field was added to a hole in sw_flow_key.
>
> Signed-off-by: Jiri Benc <jb...@redhat.com>
> ---
> net/openvswitch/flow.c | 4 ++--
> net/openvswitch/flow.h | 1 +
> net/openvswitch/flow_netlink.c | 7 +++++--
> net/openvswitch/flow_table.c | 2 +-
> 4 files changed, 9 insertions(+), 5 deletions(-)
>
...
> diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
> index fe527d2dd4b7..5688e33e2de6 100644
> --- a/net/openvswitch/flow.h
> +++ b/net/openvswitch/flow.h
> @@ -63,6 +63,7 @@ struct sw_flow_key {
> u32 skb_mark; /* SKB mark. */
> u16 in_port; /* Input switch port (or
> DP_MAX_PORTS). */
> } __packed phy; /* Safe when right after 'tun_key'. */
> + u8 tun_proto; /* Protocol of encapsulating tunnel.
> */
We can add rather add TUNNEL_IPV6 flag to distinguish IPv4 and IPv6
tunnel keys. This can be stored in ip_tunnel_key.tun_flags. That also
saves space in flow key.
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