mlxsw: Add ECN configurations with IPinIP tunnels

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Initialize ECN mapping registers during router init according to
INET_ECN_encapsulate() and INET_ECN_decapsulate().

For IP-in-IP encapsulation, this is required to ensure that ECN bits in
the underlay are set in accordance with the kernel. For decapsulation,
this is required to ensure that packets with invalid ECN combination in
underlay and overlay are trapped to the kernel and not forwarded.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Amit Cohen 2020-01-19 15:00:52 +02:00 • committed by David S. Miller

parent 839607e2ec

commit 4a44ee67a7

3 changed files with 73 additions and 0 deletions

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60

drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.c

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10

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c

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3

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h

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