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Beniamino Galvani 2c6d08c6ec ipv4: add new arguments to udp_tunnel_dst_lookup()
[ Upstream commit 72fc68c635 ]

We want to make the function more generic so that it can be used by
other UDP tunnel implementations such as geneve and vxlan. To do that,
add the following arguments:

 - source and destination UDP port;
 - ifindex of the output interface, needed by vxlan;
 - the tos, because in some cases it is not taken from struct
   ip_tunnel_info (for example, when it's inherited from the inner
   packet);
 - the dst cache, because not all tunnel types (e.g. vxlan) want to
   use the one from struct ip_tunnel_info.

With these parameters, the function no longer needs the full struct
ip_tunnel_info as argument and we can pass only the relevant part of
it (struct ip_tunnel_key).

Suggested-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: aa6c6d9ee0 ("bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-06-01 17:35:43 +02:00
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Linux kernel
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There are several guides for kernel developers and users. These guides can
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