mlxsw: Handle config changes pertinent to SPAN
authorPetr Machata <petrm@mellanox.com>
Tue, 27 Feb 2018 13:53:46 +0000 (14:53 +0100)
committerDavid S. Miller <davem@davemloft.net>
Tue, 27 Feb 2018 19:46:27 +0000 (14:46 -0500)
commit803335acbe3371f1c0e9dd02f318b16f5abc22f4
tree7bbd1d24c2adff07c8bd7a1fadc43ed2f6d2e1df
parent169b5d95c15e01e08e1665bd8ceaff9bf8331c33
mlxsw: Handle config changes pertinent to SPAN

For some netdevices, for which mlxsw offloads mirroring, may have a
complex relationship between the declared intent and low-level
device configuration.

Trying to accurately track which changes might influence offloading
decisions is finicky and error-prone. Instead, this patch introduces a
function mlxsw_sp_span_entry_respin, which re-queries the configuration
anew and, if different, removes the existing offloads and installs new
ones.

Call this function strategically at event handlers that might influence
the mirroring configuration.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
drivers/net/ethernet/mellanox/mlxsw/spectrum_span.h