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mlxsw: spectrum: Create a function to map vPort's FID
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A FID used by a vPort (vFID, but also rFID later in the series) is
always mapped using {Port, VID} and not only VID as with the 4K FIDs of
the VLAN-aware bridge.

Instead of specifying all the arguments each time, just wrap this
operation using a dedicated function and simplify the code.

As before, the function takes FID as its argument in preparation for a
generic FID struct.

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>
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Ido Schimmel authored and David S. Miller committed Jun 21, 2016
1 parent c7e920b commit 9c4d442
Showing 1 changed file with 38 additions and 46 deletions.
84 changes: 38 additions & 46 deletions drivers/net/ethernet/mellanox/mlxsw/spectrum.c
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Original file line number Diff line number Diff line change
Expand Up @@ -745,13 +745,24 @@ static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
kfree(mlxsw_sp_vport);
}

static int mlxsw_sp_vport_fid_map(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
bool valid)
{
enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);

return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport, mt, valid, fid,
vid);
}

int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
u16 vid)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_port *mlxsw_sp_vport;
struct mlxsw_sp_vfid *vfid;
u16 fid;
int err;

/* VLAN 0 is added to HW filter when device goes up, but it is
Expand Down Expand Up @@ -804,15 +815,12 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
}
}

err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
true,
mlxsw_sp_vfid_to_fid(vfid->vfid),
vid);
fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, true);
if (err) {
netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n",
vid, vfid->vfid);
goto err_port_vid_to_fid_set;
goto err_vport_fid_map;
}

err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
Expand Down Expand Up @@ -844,10 +852,8 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
err_port_add_vid:
mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
err_port_vid_learning_set:
mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
mlxsw_sp_vfid_to_fid(vfid->vfid), vid);
err_port_vid_to_fid_set:
mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, false);
err_vport_fid_map:
if (list_is_singular(&mlxsw_sp_port->vports_list))
mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
err_port_vp_mode_trans:
Expand All @@ -867,6 +873,7 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev,
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp_port *mlxsw_sp_vport;
struct mlxsw_sp_vfid *vfid;
u16 fid;
int err;

/* VLAN 0 is removed from HW filter when device goes down, but
Expand Down Expand Up @@ -903,11 +910,8 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev,
return err;
}

err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
false,
mlxsw_sp_vfid_to_fid(vfid->vfid),
vid);
fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, false);
if (err) {
netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n",
vid, vfid->vfid);
Expand Down Expand Up @@ -3213,6 +3217,7 @@ static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
struct net_device *dev = mlxsw_sp_vport->dev;
struct mlxsw_sp_vfid *vfid, *new_vfid;
u16 fid, new_fid;
int err;

vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
Expand All @@ -3233,26 +3238,20 @@ static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
/* Invalidate existing {Port, VID} to vFID mapping and create a new
* one for the new vFID.
*/
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
false,
mlxsw_sp_vfid_to_fid(vfid->vfid),
vid);
fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, false);
if (err) {
netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
vfid->vfid);
goto err_port_vid_to_fid_invalidate;
goto err_vport_fid_unmap;
}

err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
true,
mlxsw_sp_vfid_to_fid(new_vfid->vfid),
vid);
new_fid = mlxsw_sp_vfid_to_fid(new_vfid->vfid);
err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, new_fid, true);
if (err) {
netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
new_vfid->vfid);
goto err_port_vid_to_fid_validate;
goto err_vport_fid_map;
}

err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
Expand Down Expand Up @@ -3294,8 +3293,8 @@ static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
err_port_stp_state_set:
err_vport_flood_set:
err_port_vid_learning_set:
err_port_vid_to_fid_validate:
err_port_vid_to_fid_invalidate:
err_vport_fid_map:
err_vport_fid_unmap:
/* Rollback vFID only if new. */
if (!new_vfid->nr_vports)
mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
Expand All @@ -3309,6 +3308,7 @@ static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
struct net_device *dev = mlxsw_sp_vport->dev;
struct mlxsw_sp_vfid *vfid;
u16 fid, old_fid;
int err;

vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
Expand Down Expand Up @@ -3336,26 +3336,20 @@ static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
/* We need to invalidate existing {Port, VID} to vFID mapping and
* create a new one for the bridge's vFID.
*/
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
false,
mlxsw_sp_vfid_to_fid(old_vfid->vfid),
vid);
old_fid = mlxsw_sp_vfid_to_fid(old_vfid->vfid);
err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, old_fid, false);
if (err) {
netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
old_vfid->vfid);
goto err_port_vid_to_fid_invalidate;
goto err_vport_fid_unmap;
}

err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
true,
mlxsw_sp_vfid_to_fid(vfid->vfid),
vid);
fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, true);
if (err) {
netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
vfid->vfid);
goto err_port_vid_to_fid_validate;
goto err_vport_fid_map;
}

/* Switch between the vFIDs and destroy the old one if needed. */
Expand All @@ -3372,11 +3366,9 @@ static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,

return 0;

err_port_vid_to_fid_validate:
mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
err_port_vid_to_fid_invalidate:
err_vport_fid_map:
mlxsw_sp_vport_fid_map(mlxsw_sp_vport, old_fid, true);
err_vport_fid_unmap:
mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
err_port_vid_learning_set:
mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false);
Expand Down

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