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mlxsw: spectrum: Offload learning to the switch ASIC 

Up until now we simply stored the learning configuration of a bridge
port in the driver and decided whether to learn a new FDB record based
on this value.

However, this is sub-optimal in cases where learning is disabled on the
bridge port, as the device repeatedly generates learning notifications
for the same record.

Instead, offload the learning configuration to the device, thereby
preventing it from generating notifications when learning is disabled.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2016-08-24 12:00:27 +02:00 committed by David S. Miller
parent 584d73df06
commit 89b548f0cf
1 changed files with 44 additions and 3 deletions
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47
drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
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@ -261,12 +261,40 @@ int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
false); false);
} }
static int mlxsw_sp_port_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool set)
{
u16 vid;
int err;
if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
return __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
set);
}
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
err = __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
set);
if (err)
goto err_port_vid_learning_set;
}
return 0;
err_port_vid_learning_set:
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
__mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid, !set);
return err;
}
static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port, static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_trans *trans, struct switchdev_trans *trans,
unsigned long brport_flags) unsigned long brport_flags)
{ {
unsigned long learning = mlxsw_sp_port->learning ? BR_LEARNING : 0;
unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0; unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
bool set;
int err; int err;
if (!mlxsw_sp_port->bridged) if (!mlxsw_sp_port->bridged)
@ -276,17 +304,30 @@ static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
return 0; return 0;
if ((uc_flood ^ brport_flags) & BR_FLOOD) { if ((uc_flood ^ brport_flags) & BR_FLOOD) {
set = mlxsw_sp_port->uc_flood ? false : true; err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port,
err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set); !mlxsw_sp_port->uc_flood);
if (err) if (err)
return err; return err;
} }
if ((learning ^ brport_flags) & BR_LEARNING) {
err = mlxsw_sp_port_learning_set(mlxsw_sp_port,
!mlxsw_sp_port->learning);
if (err)
goto err_port_learning_set;
}
mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0; mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0; mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0; mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
return 0; return 0;
err_port_learning_set:
if ((uc_flood ^ brport_flags) & BR_FLOOD)
mlxsw_sp_port_uc_flood_set(mlxsw_sp_port,
mlxsw_sp_port->uc_flood);
return err;
} }
static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time) static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)