[patch net-next 00/23] mlxsw: Preparation for IPv4 router

STALE3698d

25 messages, 2 authors, 2016-06-21 · open the first message on its own page

[patch net-next 00/23] mlxsw: Preparation for IPv4 router

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 22:50:45

From: Jiri Pirko <redacted>

Ido says:

This series prepares the driver for IPv4 router support. The router follow-up
patches are available at: https://github.com/jpirko/linux_mlxsw/tree/net-next_queue

Patches 1-9 simplify the netdevice notification block and also add several
checks during PRECHANGEUPPER events against topologies that aren't supported by
the device. This will ensure L3 interfaces are only configured on top of
valid netdevs.

Patches 10-13 contain trivial changes required for the introduction of a generic
FID struct - currently only used for vFIDs - in patch 14. Making the FID
struct generic will allow us to easily associate the underlying FIDs with
their L3-counterparts - Router interfaces (RIFs):

    FID Type        | Used by                         | RIF Type
    --------------------------------------------------------
    FID             | The VLAN-aware bridge           | VLAN
    vFID            | VLAN-unaware bridges            | FID
    rFID            | non-bridged netdevs (follow-up) | Sub-port

Obligatory ASCII art to visualize the above:

                   A.B.C.D
                      +
                      | FID RIF
                      +
                     br0                    E.F.G.H
                      +                        +
                      |                        | VLAN RIF
            +---------+---------+              +
            |                   |            br1.W
            | vFID              |              +
            |                   |              |
 vPort    +-+-+               +-+-+            +
swXpY.Z   |   |               |   |           br1
          +-+-+               +-+-+            +
            |                   |     FID=W    |
            |                   | +------------+------------+
            |                   | |                         |
        +---+---+           +---+-+-+                   +---+---+
        |       |           |       |                   |       |
        |       |           |       |                   |       |
        |       |           |       |                   |       |
        +-------+           +-------+                   +-------+
          swXpY

Patches 15-16 further generalize the struct by exploiting the fact that the
FID is a shared resource among ports. Each FID type is assigned a 'leave'
function that is invoked based on CHANGEUPPER events and takes care of the
necessary clean-up.

Patches 17-22 build upon the previous patches and use the FID struct for the
VLAN-aware bridge and take care of cleaning up FID resources in the 'leave'
functions. For now, these are only FDB records, but later on we'll have to
remove the RIFs associated with these FIDs, which will in turn take care of
routes and neighbours clean-up.

The last patch adds debug prints that proved very useful during the
development of this series.

Tested with the existing L2 recipes:
https://github.com/jpirko/lnst/tree/master/recipes/switchdev

Ido Schimmel (23):
  mlxsw: spectrum: Use notifier_from_errno() in notifier block
  mlxsw: spectrum: Sanitize port netdev upper devices
  mlxsw: spectrum: Forbid LAG slave from having VLAN uppers
  mlxsw: spectrum: Remove unnecessary checks from event processing
  mlxsw: spectrum: Use WARN_ON() return value
  mlxsw: spectrum: Make unlinking functions return void
  mlxsw: spectrum: Remove unnecessary function argument
  mlxsw: spectrum: Centralize VLAN-aware bridge ref counting
  mlxsw: spectrum: Use DECLARE_BITMAP() macro
  mlxsw: spectrum: Remove redundant function argument
  mlxsw: spectrum: Use only one function to create vFIDs
  mlxsw: spectrum: Create a function to map vPort's FID
  mlxsw: spectrum: Use FID instead of vFID to setup flooding
  mlxsw: spectrum: Make vFID struct generic
  mlxsw: spectrum: Use join / leave functions for vFID operations
  mlxsw: spectrum: Remove unused function argument
  mlxsw: spectrum: Use per-FID struct for the VLAN-aware bridge
  mlxsw: spectrum: Check if port is vPort using its VID
  mlxsw: spectrum: Add FID get / set functions
  mlxsw: spectrum: Don't count on FID being present
  mlxsw: spectrum: Refactor FDB flushing logic
  mlxsw: spectrum: Free resources upon vPort destruction
  mlxsw: spectrum: Add debug prints

 drivers/net/ethernet/mellanox/mlxsw/spectrum.c     | 852 ++++++++-------------
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h     |  62 +-
 .../ethernet/mellanox/mlxsw/spectrum_switchdev.c   | 362 +++++----
 3 files changed, 592 insertions(+), 684 deletions(-)

-- 
2.5.5

[patch net-next 03/23] mlxsw: spectrum: Forbid LAG slave from having VLAN uppers

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:16:19

From: Ido Schimmel <redacted>

When a port netdev is put under LAG it cannot have VLAN upper devices,
so forbid that. The LAG device itself can have VLAN upper devices.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index b47e3fb..46c867f 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3038,7 +3038,7 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 		    !netif_is_lag_master(upper_dev) &&
 		    !netif_is_bridge_master(upper_dev))
 			return -EINVAL;
-		if (!info->master || !info->linking)
+		if (!info->linking)
 			break;
 		/* HW limitation forbids to put ports to multiple bridges. */
 		if (netif_is_bridge_master(upper_dev) &&
@@ -3048,6 +3048,11 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 		    !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
 					       info->upper_info))
 			return -EINVAL;
+		if (netif_is_lag_master(upper_dev) && vlan_uses_dev(dev))
+			return -EINVAL;
+		if (netif_is_lag_port(dev) && is_vlan_dev(upper_dev) &&
+		    !netif_is_lag_master(vlan_dev_real_dev(upper_dev)))
+			return -EINVAL;
 		break;
 	case NETDEV_CHANGEUPPER:
 		upper_dev = info->upper_dev;
-- 
2.5.5

[patch net-next 04/23] mlxsw: spectrum: Remove unnecessary checks from event processing

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:16:19

From: Ido Schimmel <redacted>

When upper device of a VLAN device changes we already made sure it's
a bridge device in PRECHANGEUPPER, so no need to check it's a master
device in CHANGEUPPER.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 46c867f..e55c685 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3440,10 +3440,10 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 	switch (event) {
 	case NETDEV_PRECHANGEUPPER:
 		upper_dev = info->upper_dev;
-		if (!info->master || !info->linking)
-			break;
 		if (!netif_is_bridge_master(upper_dev))
 			return -EINVAL;
+		if (!info->linking)
+			break;
 		/* We can't have multiple VLAN interfaces configured on
 		 * the same port and being members in the same bridge.
 		 */
@@ -3453,8 +3453,6 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 		break;
 	case NETDEV_CHANGEUPPER:
 		upper_dev = info->upper_dev;
-		if (!info->master)
-			break;
 		if (info->linking) {
 			if (!mlxsw_sp_vport) {
 				WARN_ON(!mlxsw_sp_vport);
-- 
2.5.5

[patch net-next 15/23] mlxsw: spectrum: Use join / leave functions for vFID operations

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:16:19

From: Ido Schimmel <redacted>

When a vPort is created or when it joins a bridge we always do the same
set of operations:

1) Create the vFID, if not already created
2) Setup flooding for the vFID
3) Map the {Port, VID} to the vFID

When a vPort is destroyed or when it leaves a bridge the reverse is
performed.

Encapsulate the above in join / leave functions and simplify the code.
FIDs and rFIDs will use a similar set of functions.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 304 ++++++++++---------------
 1 file changed, 126 insertions(+), 178 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 8ef8d0b..ad8e447 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -712,8 +712,7 @@ static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
 }
 
 static struct mlxsw_sp_port *
-mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
-			   struct mlxsw_sp_fid *f)
+mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 {
 	struct mlxsw_sp_port *mlxsw_sp_vport;
 
@@ -731,8 +730,7 @@ mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
 	mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
 	mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
 	mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
-	mlxsw_sp_vport->vport.f = f;
-	mlxsw_sp_vport->vport.vid = f->vid;
+	mlxsw_sp_vport->vport.vid = vid;
 
 	list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
 
@@ -755,13 +753,62 @@ static int mlxsw_sp_vport_fid_map(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 					    vid);
 }
 
+static int mlxsw_sp_vport_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport)
+{
+	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
+	struct mlxsw_sp_fid *f;
+	int err;
+
+	f = mlxsw_sp_vfid_find(mlxsw_sp_vport->mlxsw_sp, vid);
+	if (!f) {
+		f = mlxsw_sp_vfid_create(mlxsw_sp_vport->mlxsw_sp, vid);
+		if (IS_ERR(f))
+			return PTR_ERR(f);
+	}
+
+	if (!f->ref_count) {
+		err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
+		if (err)
+			goto err_vport_flood_set;
+	}
+
+	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
+	if (err)
+		goto err_vport_fid_map;
+
+	mlxsw_sp_vport->vport.f = f;
+	f->ref_count++;
+
+	return 0;
+
+err_vport_fid_map:
+	if (!f->ref_count)
+		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
+err_vport_flood_set:
+	if (!f->ref_count)
+		mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
+	return err;
+}
+
+static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
+{
+	struct mlxsw_sp_fid *f = mlxsw_sp_vport->vport.f;
+
+	mlxsw_sp_vport->vport.f = NULL;
+
+	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
+
+	if (--f->ref_count == 0) {
+		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
+		mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
+	}
+}
+
 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_fid *f;
 	int err;
 
 	/* VLAN 0 is added to HW filter when device goes up, but it is
@@ -775,30 +822,10 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 		return 0;
 	}
 
-	f = mlxsw_sp_vfid_find(mlxsw_sp, vid);
-	if (!f) {
-		f = mlxsw_sp_vfid_create(mlxsw_sp, vid);
-		if (IS_ERR(f)) {
-			netdev_err(dev, "Failed to create vFID for VID=%d\n",
-				   vid);
-			return PTR_ERR(f);
-		}
-	}
-
-	mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, f);
+	mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vid);
 	if (!mlxsw_sp_vport) {
 		netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
-		err = -ENOMEM;
-		goto err_port_vport_create;
-	}
-
-	if (!f->ref_count) {
-		err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
-		if (err) {
-			netdev_err(dev, "Failed to setup flooding for FID=%d\n",
-				   f->fid);
-			goto err_vport_flood_set;
-		}
+		return -ENOMEM;
 	}
 
 	/* When adding the first VLAN interface on a bridged port we need to
@@ -813,11 +840,10 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 		}
 	}
 
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
+	err = mlxsw_sp_vport_vfid_join(mlxsw_sp_vport);
 	if (err) {
-		netdev_err(dev, "Failed to map {Port, VID=%d} to FID=%d\n",
-			   vid, f->fid);
-		goto err_vport_fid_map;
+		netdev_err(dev, "Failed to join vFID\n");
+		goto err_vport_vfid_join;
 	}
 
 	err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
@@ -840,8 +866,6 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 		goto err_port_stp_state_set;
 	}
 
-	f->ref_count++;
-
 	return 0;
 
 err_port_stp_state_set:
@@ -849,18 +873,12 @@ err_port_stp_state_set:
 err_port_add_vid:
 	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
 err_port_vid_learning_set:
-	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
-err_vport_fid_map:
+	mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
+err_vport_vfid_join:
 	if (list_is_singular(&mlxsw_sp_port->vports_list))
 		mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
 err_port_vp_mode_trans:
-	if (!f->ref_count)
-		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
-err_vport_flood_set:
 	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
-err_port_vport_create:
-	if (!f->ref_count)
-		mlxsw_sp_vfid_destroy(mlxsw_sp, f);
 	return err;
 }
 
@@ -869,7 +887,6 @@ 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_fid *f;
 	int err;
 
 	/* VLAN 0 is removed from HW filter when device goes down, but
@@ -884,8 +901,6 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev,
 		return 0;
 	}
 
-	f = mlxsw_sp_vport->vport.f;
-
 	err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
 					  MLXSW_REG_SPMS_STATE_DISCARDING);
 	if (err) {
@@ -906,12 +921,7 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev,
 		return err;
 	}
 
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
-	if (err) {
-		netdev_err(dev, "Failed to invalidate {Port, VID=%d} to FID=%d mapping\n",
-			   vid, f->fid);
-		return err;
-	}
+	mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
 
 	/* When removing the last VLAN interface on a bridged port we need to
 	 * transition all active 802.1Q bridge VLANs to use VID to FID
@@ -925,13 +935,8 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev,
 		}
 	}
 
-	f->ref_count--;
 	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 
-	/* Destroy the vFID if no vPorts are assigned to it anymore. */
-	if (!f->ref_count)
-		mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, f);
-
 	return 0;
 }
 
@@ -2625,10 +2630,9 @@ static int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port)
 			return mlxsw_sp_port_fdb_flush_by_port(mlxsw_sp_port);
 }
 
-static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport)
+static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport,
+				    u16 fid)
 {
-	u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
-
 	if (mlxsw_sp_vport->lagged)
 		return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport,
 							     fid);
@@ -3203,118 +3207,66 @@ static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
 	kfree(f);
 }
 
-static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
-					struct net_device *br_dev,
-					bool flush_fdb)
+static int mlxsw_sp_vport_br_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport,
+				       struct net_device *br_dev)
 {
-	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
-	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
-	struct net_device *dev = mlxsw_sp_vport->dev;
-	struct mlxsw_sp_fid *f, *new_f;
+	struct mlxsw_sp_fid *f;
 	int err;
 
-	f = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
-	if (WARN_ON(!f))
-		return;
-
-	/* We need a vFID to go back to after leaving the bridge's vFID. */
-	new_f = mlxsw_sp_vfid_find(mlxsw_sp, vid);
-	if (!new_f) {
-		new_f = mlxsw_sp_vfid_create(mlxsw_sp, vid);
-		if (IS_ERR(new_f)) {
-			netdev_err(dev, "Failed to create vFID for VID=%d\n",
-				   vid);
-			return;
-		}
+	f = mlxsw_sp_br_vfid_find(mlxsw_sp_vport->mlxsw_sp, br_dev);
+	if (!f) {
+		f = mlxsw_sp_br_vfid_create(mlxsw_sp_vport->mlxsw_sp, br_dev);
+		if (IS_ERR(f))
+			return PTR_ERR(f);
 	}
 
-	/* Invalidate existing {Port, VID} to vFID mapping and create a new
-	 * one for the new vFID.
-	 */
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
-	if (err) {
-		netdev_err(dev, "Failed to invalidate {Port, VID} to FID=%d mapping\n",
-			   f->fid);
-		goto err_vport_fid_unmap;
-	}
+	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
+	if (err)
+		goto err_vport_flood_set;
 
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, new_f->fid, true);
-	if (err) {
-		netdev_err(dev, "Failed to map {Port, VID} to FID=%d\n",
-			   new_f->fid);
+	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
+	if (err)
 		goto err_vport_fid_map;
-	}
-
-	err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
-	if (err) {
-		netdev_err(dev, "Failed to disable learning\n");
-		goto err_port_vid_learning_set;
-	}
 
-	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
-	if (err) {
-		netdev_err(dev, "Failed clear to clear flooding\n");
-		goto err_vport_flood_set;
-	}
-
-	err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
-					  MLXSW_REG_SPMS_STATE_FORWARDING);
-	if (err) {
-		netdev_err(dev, "Failed to set STP state\n");
-		goto err_port_stp_state_set;
-	}
+	mlxsw_sp_vport->vport.f = f;
+	f->ref_count++;
 
-	if (flush_fdb && mlxsw_sp_vport_fdb_flush(mlxsw_sp_vport))
-		netdev_err(dev, "Failed to flush FDB\n");
+	return 0;
 
-	/* Switch between the vFIDs and destroy the old one if needed. */
-	new_f->ref_count++;
-	mlxsw_sp_vport->vport.f = new_f;
-	f->ref_count--;
+err_vport_fid_map:
+	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
+err_vport_flood_set:
 	if (!f->ref_count)
-		mlxsw_sp_br_vfid_destroy(mlxsw_sp, f);
+		mlxsw_sp_br_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
+	return err;
+}
 
-	mlxsw_sp_vport->learning = 0;
-	mlxsw_sp_vport->learning_sync = 0;
-	mlxsw_sp_vport->uc_flood = 0;
-	mlxsw_sp_vport->bridged = 0;
+static void mlxsw_sp_vport_br_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
+{
+	struct mlxsw_sp_fid *f = mlxsw_sp_vport->vport.f;
 
-	return;
+	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
 
-err_port_stp_state_set:
-err_vport_flood_set:
-err_port_vid_learning_set:
-err_vport_fid_map:
-err_vport_fid_unmap:
-	/* Rollback vFID only if new. */
-	if (!new_f->ref_count)
-		mlxsw_sp_vfid_destroy(mlxsw_sp, new_f);
+	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
+
+	mlxsw_sp_vport->vport.f = NULL;
+	if (--f->ref_count == 0)
+		mlxsw_sp_br_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
 }
 
 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 				      struct net_device *br_dev)
 {
-	struct mlxsw_sp_fid *old_f = mlxsw_sp_vport->vport.f;
-	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
 	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
 	struct net_device *dev = mlxsw_sp_vport->dev;
-	struct mlxsw_sp_fid *f;
 	int err;
 
-	f = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
-	if (!f) {
-		f = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
-		if (IS_ERR(f)) {
-			netdev_err(dev, "Failed to create bridge vFID\n");
-			return PTR_ERR(f);
-		}
-	}
+	mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
 
-	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
+	err = mlxsw_sp_vport_br_vfid_join(mlxsw_sp_vport, br_dev);
 	if (err) {
-		netdev_err(dev, "Failed to setup flooding for FID=%d\n",
-			   f->fid);
-		goto err_port_flood_set;
+		netdev_err(dev, "Failed to join vFID\n");
+		goto err_vport_br_vfid_join;
 	}
 
 	err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
@@ -3323,30 +3275,6 @@ static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 		goto err_port_vid_learning_set;
 	}
 
-	/* We need to invalidate existing {Port, VID} to vFID mapping and
-	 * create a new one for the bridge's vFID.
-	 */
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, old_f->fid, false);
-	if (err) {
-		netdev_err(dev, "Failed to invalidate {Port, VID} to FID=%d mapping\n",
-			   old_f->fid);
-		goto err_vport_fid_unmap;
-	}
-
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
-	if (err) {
-		netdev_err(dev, "Failed to map {Port, VID} to FID=%d\n",
-			   f->fid);
-		goto err_vport_fid_map;
-	}
-
-	/* Switch between the vFIDs and destroy the old one if needed. */
-	f->ref_count++;
-	mlxsw_sp_vport->vport.f = f;
-	old_f->ref_count--;
-	if (!old_f->ref_count)
-		mlxsw_sp_vfid_destroy(mlxsw_sp, old_f);
-
 	mlxsw_sp_vport->learning = 1;
 	mlxsw_sp_vport->learning_sync = 1;
 	mlxsw_sp_vport->uc_flood = 1;
@@ -3354,18 +3282,38 @@ static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 
 	return 0;
 
-err_vport_fid_map:
-	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, old_f->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, f->fid, false);
-err_port_flood_set:
-	if (!f->ref_count)
-		mlxsw_sp_br_vfid_destroy(mlxsw_sp, f);
+	mlxsw_sp_vport_br_vfid_leave(mlxsw_sp_vport);
+err_vport_br_vfid_join:
+	mlxsw_sp_vport_vfid_join(mlxsw_sp_vport);
 	return err;
 }
 
+static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
+					struct net_device *br_dev,
+					bool flush_fdb)
+{
+	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
+	u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
+
+	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
+
+	mlxsw_sp_vport_br_vfid_leave(mlxsw_sp_vport);
+
+	mlxsw_sp_vport_vfid_join(mlxsw_sp_vport);
+
+	mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
+				    MLXSW_REG_SPMS_STATE_FORWARDING);
+
+	if (flush_fdb)
+		mlxsw_sp_vport_fdb_flush(mlxsw_sp_vport, fid);
+
+	mlxsw_sp_vport->learning = 0;
+	mlxsw_sp_vport->learning_sync = 0;
+	mlxsw_sp_vport->uc_flood = 0;
+	mlxsw_sp_vport->bridged = 0;
+}
+
 static bool
 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
 				  const struct net_device *br_dev)
-- 
2.5.5

[patch net-next 14/23] mlxsw: spectrum: Make vFID struct generic

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:16:20

From: Ido Schimmel <redacted>

Up until now we had a dedicated struct only for vFIDs, but before
introducing support for L3 interfaces we need to make it generic and
use it for all three types of FIDs:

1) FIDs - 0..4K-1, used for the VLAN-aware bridge
2) vFIDs - 4K..15K-1, used for VLAN-unaware bridges
3) rFIDs - 15K..16K-1, used to direct traffic to / from the router in
the device. Will be introduced later in the series.

The three types of L3 interfaces - Router InterFaces, RIFs - that will
be introduced correspond to the three types of FIDs and are configured
using them. Therefore, we'll need to store the links between them as
well as a reference count on the underlying FID, so that the
corresponding RIF will be destroyed when it reaches zero.

Note that the lower 0.5K vFIDs are currently used for for non-bridged
netdevs, so that traffic could be flooded to the CPU port. However, when
rFIDs will be introduced we'll no longer need these and they too will be
used for VLAN-unaware bridges.

Make the vFID struct generic by renaming it and some of its fields. FIDs
will be converted to use it later in the series.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c     | 229 ++++++++++-----------
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h     |  24 +--
 .../ethernet/mellanox/mlxsw/spectrum_switchdev.c   |  28 +--
 3 files changed, 131 insertions(+), 150 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 7a75a45..8ef8d0b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -633,14 +633,14 @@ static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
 	return 0;
 }
 
-static struct mlxsw_sp_vfid *
+static struct mlxsw_sp_fid *
 mlxsw_sp_vfid_find(const struct mlxsw_sp *mlxsw_sp, u16 vid)
 {
-	struct mlxsw_sp_vfid *vfid;
+	struct mlxsw_sp_fid *f;
 
-	list_for_each_entry(vfid, &mlxsw_sp->port_vfids.list, list) {
-		if (vfid->vid == vid)
-			return vfid;
+	list_for_each_entry(f, &mlxsw_sp->port_vfids.list, list) {
+		if (f->vid == vid)
+			return f;
 	}
 
 	return NULL;
@@ -660,11 +660,11 @@ static int mlxsw_sp_vfid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
 	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 }
 
-static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
-						  u16 vid)
+static struct mlxsw_sp_fid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
+						 u16 vid)
 {
 	struct device *dev = mlxsw_sp->bus_info->dev;
-	struct mlxsw_sp_vfid *f;
+	struct mlxsw_sp_fid *f;
 	u16 vfid, fid;
 	int err;
 
@@ -685,7 +685,7 @@ static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
 	if (!f)
 		goto err_allocate_vfid;
 
-	f->vfid = vfid;
+	f->fid = fid;
 	f->vid = vid;
 
 	list_add(&f->list, &mlxsw_sp->port_vfids.list);
@@ -699,21 +699,21 @@ err_allocate_vfid:
 }
 
 static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
-				  struct mlxsw_sp_vfid *vfid)
+				  struct mlxsw_sp_fid *f)
 {
-	u16 fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
+	u16 vfid = mlxsw_sp_fid_to_vfid(f->fid);
 
-	clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
-	list_del(&vfid->list);
+	clear_bit(vfid, mlxsw_sp->port_vfids.mapped);
+	list_del(&f->list);
 
-	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
+	mlxsw_sp_vfid_op(mlxsw_sp, f->fid, false);
 
-	kfree(vfid);
+	kfree(f);
 }
 
 static struct mlxsw_sp_port *
 mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
-			   struct mlxsw_sp_vfid *vfid)
+			   struct mlxsw_sp_fid *f)
 {
 	struct mlxsw_sp_port *mlxsw_sp_vport;
 
@@ -731,8 +731,8 @@ mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
 	mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
 	mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
 	mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
-	mlxsw_sp_vport->vport.vfid = vfid;
-	mlxsw_sp_vport->vport.vid = vfid->vid;
+	mlxsw_sp_vport->vport.f = f;
+	mlxsw_sp_vport->vport.vid = f->vid;
 
 	list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
 
@@ -761,8 +761,7 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 	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;
+	struct mlxsw_sp_fid *f;
 	int err;
 
 	/* VLAN 0 is added to HW filter when device goes up, but it is
@@ -776,29 +775,28 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 		return 0;
 	}
 
-	vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
-	if (!vfid) {
-		vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
-		if (IS_ERR(vfid)) {
+	f = mlxsw_sp_vfid_find(mlxsw_sp, vid);
+	if (!f) {
+		f = mlxsw_sp_vfid_create(mlxsw_sp, vid);
+		if (IS_ERR(f)) {
 			netdev_err(dev, "Failed to create vFID for VID=%d\n",
 				   vid);
-			return PTR_ERR(vfid);
+			return PTR_ERR(f);
 		}
 	}
 
-	mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vfid);
+	mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, f);
 	if (!mlxsw_sp_vport) {
 		netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
 		err = -ENOMEM;
 		goto err_port_vport_create;
 	}
 
-	fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
-	if (!vfid->nr_vports) {
-		err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, fid, true);
+	if (!f->ref_count) {
+		err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
 		if (err) {
-			netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
-				   vfid->vfid);
+			netdev_err(dev, "Failed to setup flooding for FID=%d\n",
+				   f->fid);
 			goto err_vport_flood_set;
 		}
 	}
@@ -815,10 +813,10 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 		}
 	}
 
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, true);
+	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
 	if (err) {
-		netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n",
-			   vid, vfid->vfid);
+		netdev_err(dev, "Failed to map {Port, VID=%d} to FID=%d\n",
+			   vid, f->fid);
 		goto err_vport_fid_map;
 	}
 
@@ -842,7 +840,7 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 		goto err_port_stp_state_set;
 	}
 
-	vfid->nr_vports++;
+	f->ref_count++;
 
 	return 0;
 
@@ -851,18 +849,18 @@ err_port_stp_state_set:
 err_port_add_vid:
 	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
 err_port_vid_learning_set:
-	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, false);
+	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->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:
-	if (!vfid->nr_vports)
-		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, fid, false);
+	if (!f->ref_count)
+		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
 err_vport_flood_set:
 	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 err_port_vport_create:
-	if (!vfid->nr_vports)
-		mlxsw_sp_vfid_destroy(mlxsw_sp, vfid);
+	if (!f->ref_count)
+		mlxsw_sp_vfid_destroy(mlxsw_sp, f);
 	return err;
 }
 
@@ -871,8 +869,7 @@ 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;
+	struct mlxsw_sp_fid *f;
 	int err;
 
 	/* VLAN 0 is removed from HW filter when device goes down, but
@@ -887,7 +884,7 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev,
 		return 0;
 	}
 
-	vfid = mlxsw_sp_vport->vport.vfid;
+	f = mlxsw_sp_vport->vport.f;
 
 	err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
 					  MLXSW_REG_SPMS_STATE_DISCARDING);
@@ -909,11 +906,10 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev,
 		return err;
 	}
 
-	fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, false);
+	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
 	if (err) {
-		netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n",
-			   vid, vfid->vfid);
+		netdev_err(dev, "Failed to invalidate {Port, VID=%d} to FID=%d mapping\n",
+			   vid, f->fid);
 		return err;
 	}
 
@@ -929,12 +925,12 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev,
 		}
 	}
 
-	vfid->nr_vports--;
+	f->ref_count--;
 	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 
 	/* Destroy the vFID if no vPorts are assigned to it anymore. */
-	if (!vfid->nr_vports)
-		mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, vfid);
+	if (!f->ref_count)
+		mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, f);
 
 	return 0;
 }
@@ -2631,8 +2627,7 @@ static int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port)
 
 static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport)
 {
-	u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_vport);
-	u16 fid = mlxsw_sp_vfid_to_fid(vfid);
+	u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
 
 	if (mlxsw_sp_vport->lagged)
 		return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport,
@@ -3126,15 +3121,15 @@ static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
 	return 0;
 }
 
-static struct mlxsw_sp_vfid *
+static struct mlxsw_sp_fid *
 mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
 		      const struct net_device *br_dev)
 {
-	struct mlxsw_sp_vfid *vfid;
+	struct mlxsw_sp_fid *f;
 
-	list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
-		if (vfid->br_dev == br_dev)
-			return vfid;
+	list_for_each_entry(f, &mlxsw_sp->br_vfids.list, list) {
+		if (f->dev == br_dev)
+			return f;
 	}
 
 	return NULL;
@@ -3156,11 +3151,11 @@ static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
 				   MLXSW_SP_VFID_BR_MAX);
 }
 
-static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
-						     struct net_device *br_dev)
+static struct mlxsw_sp_fid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
+						    struct net_device *br_dev)
 {
 	struct device *dev = mlxsw_sp->bus_info->dev;
-	struct mlxsw_sp_vfid *f;
+	struct mlxsw_sp_fid *f;
 	u16 vfid, fid;
 	int err;
 
@@ -3181,8 +3176,8 @@ static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
 	if (!f)
 		goto err_allocate_vfid;
 
-	f->vfid = vfid;
-	f->br_dev = br_dev;
+	f->fid = fid;
+	f->dev = br_dev;
 
 	list_add(&f->list, &mlxsw_sp->br_vfids.list);
 	set_bit(mlxsw_sp_vfid_to_br_vfid(vfid), mlxsw_sp->br_vfids.mapped);
@@ -3195,17 +3190,17 @@ err_allocate_vfid:
 }
 
 static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
-				     struct mlxsw_sp_vfid *vfid)
+				     struct mlxsw_sp_fid *f)
 {
-	u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
-	u16 fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
+	u16 vfid = mlxsw_sp_fid_to_vfid(f->fid);
+	u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid);
 
 	clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
-	list_del(&vfid->list);
+	list_del(&f->list);
 
-	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
+	mlxsw_sp_vfid_op(mlxsw_sp, f->fid, false);
 
-	kfree(vfid);
+	kfree(f);
 }
 
 static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
@@ -3215,19 +3210,18 @@ static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
 	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;
+	struct mlxsw_sp_fid *f, *new_f;
 	int err;
 
-	vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
-	if (WARN_ON(!vfid))
+	f = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
+	if (WARN_ON(!f))
 		return;
 
 	/* We need a vFID to go back to after leaving the bridge's vFID. */
-	new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
-	if (!new_vfid) {
-		new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
-		if (IS_ERR(new_vfid)) {
+	new_f = mlxsw_sp_vfid_find(mlxsw_sp, vid);
+	if (!new_f) {
+		new_f = mlxsw_sp_vfid_create(mlxsw_sp, vid);
+		if (IS_ERR(new_f)) {
 			netdev_err(dev, "Failed to create vFID for VID=%d\n",
 				   vid);
 			return;
@@ -3237,19 +3231,17 @@ 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.
 	 */
-	fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, false);
+	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
 	if (err) {
-		netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
-			   vfid->vfid);
+		netdev_err(dev, "Failed to invalidate {Port, VID} to FID=%d mapping\n",
+			   f->fid);
 		goto err_vport_fid_unmap;
 	}
 
-	new_fid = mlxsw_sp_vfid_to_fid(new_vfid->vfid);
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, new_fid, true);
+	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, new_f->fid, true);
 	if (err) {
-		netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
-			   new_vfid->vfid);
+		netdev_err(dev, "Failed to map {Port, VID} to FID=%d\n",
+			   new_f->fid);
 		goto err_vport_fid_map;
 	}
 
@@ -3259,7 +3251,7 @@ static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 		goto err_port_vid_learning_set;
 	}
 
-	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, fid, false);
+	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
 	if (err) {
 		netdev_err(dev, "Failed clear to clear flooding\n");
 		goto err_vport_flood_set;
@@ -3276,11 +3268,11 @@ static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 		netdev_err(dev, "Failed to flush FDB\n");
 
 	/* Switch between the vFIDs and destroy the old one if needed. */
-	new_vfid->nr_vports++;
-	mlxsw_sp_vport->vport.vfid = new_vfid;
-	vfid->nr_vports--;
-	if (!vfid->nr_vports)
-		mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
+	new_f->ref_count++;
+	mlxsw_sp_vport->vport.f = new_f;
+	f->ref_count--;
+	if (!f->ref_count)
+		mlxsw_sp_br_vfid_destroy(mlxsw_sp, f);
 
 	mlxsw_sp_vport->learning = 0;
 	mlxsw_sp_vport->learning_sync = 0;
@@ -3295,35 +3287,33 @@ err_port_vid_learning_set:
 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);
+	if (!new_f->ref_count)
+		mlxsw_sp_vfid_destroy(mlxsw_sp, new_f);
 }
 
 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 				      struct net_device *br_dev)
 {
-	struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
+	struct mlxsw_sp_fid *old_f = mlxsw_sp_vport->vport.f;
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
 	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;
+	struct mlxsw_sp_fid *f;
 	int err;
 
-	vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
-	if (!vfid) {
-		vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
-		if (IS_ERR(vfid)) {
+	f = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
+	if (!f) {
+		f = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
+		if (IS_ERR(f)) {
 			netdev_err(dev, "Failed to create bridge vFID\n");
-			return PTR_ERR(vfid);
+			return PTR_ERR(f);
 		}
 	}
 
-	fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
-	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, fid, true);
+	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
 	if (err) {
-		netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
-			   vfid->vfid);
+		netdev_err(dev, "Failed to setup flooding for FID=%d\n",
+			   f->fid);
 		goto err_port_flood_set;
 	}
 
@@ -3336,27 +3326,26 @@ 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.
 	 */
-	old_fid = mlxsw_sp_vfid_to_fid(old_vfid->vfid);
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, old_fid, false);
+	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, old_f->fid, false);
 	if (err) {
-		netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
-			   old_vfid->vfid);
+		netdev_err(dev, "Failed to invalidate {Port, VID} to FID=%d mapping\n",
+			   old_f->fid);
 		goto err_vport_fid_unmap;
 	}
 
-	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, fid, true);
+	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
 	if (err) {
-		netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
-			   vfid->vfid);
+		netdev_err(dev, "Failed to map {Port, VID} to FID=%d\n",
+			   f->fid);
 		goto err_vport_fid_map;
 	}
 
 	/* Switch between the vFIDs and destroy the old one if needed. */
-	vfid->nr_vports++;
-	mlxsw_sp_vport->vport.vfid = vfid;
-	old_vfid->nr_vports--;
-	if (!old_vfid->nr_vports)
-		mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);
+	f->ref_count++;
+	mlxsw_sp_vport->vport.f = f;
+	old_f->ref_count--;
+	if (!old_f->ref_count)
+		mlxsw_sp_vfid_destroy(mlxsw_sp, old_f);
 
 	mlxsw_sp_vport->learning = 1;
 	mlxsw_sp_vport->learning_sync = 1;
@@ -3366,14 +3355,14 @@ static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 	return 0;
 
 err_vport_fid_map:
-	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, old_fid, true);
+	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, old_f->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, fid, false);
+	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
 err_port_flood_set:
-	if (!vfid->nr_vports)
-		mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
+	if (!f->ref_count)
+		mlxsw_sp_br_vfid_destroy(mlxsw_sp, f);
 	return err;
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 0ae929e..c973ab5 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -87,11 +87,11 @@ struct mlxsw_sp_upper {
 	unsigned int ref_count;
 };
 
-struct mlxsw_sp_vfid {
+struct mlxsw_sp_fid {
 	struct list_head list;
-	u16 nr_vports;
-	u16 vfid;	/* Starting at 0 */
-	struct net_device *br_dev;
+	unsigned int ref_count;
+	struct net_device *dev;
+	u16 fid;
 	u16 vid;
 };
 
@@ -217,7 +217,7 @@ struct mlxsw_sp_port {
 	u16 lag_id;
 	struct {
 		struct list_head list;
-		struct mlxsw_sp_vfid *vfid;
+		struct mlxsw_sp_fid *f;
 		u16 vid;
 	} vport;
 	struct {
@@ -262,13 +262,13 @@ mlxsw_sp_port_lagged_get(struct mlxsw_sp *mlxsw_sp, u16 lag_id, u8 port_index)
 static inline bool
 mlxsw_sp_port_is_vport(const struct mlxsw_sp_port *mlxsw_sp_port)
 {
-	return mlxsw_sp_port->vport.vfid;
+	return mlxsw_sp_port->vport.f;
 }
 
 static inline struct net_device *
 mlxsw_sp_vport_br_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 {
-	return mlxsw_sp_vport->vport.vfid->br_dev;
+	return mlxsw_sp_vport->vport.f->dev;
 }
 
 static inline u16
@@ -278,9 +278,9 @@ mlxsw_sp_vport_vid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 }
 
 static inline u16
-mlxsw_sp_vport_vfid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
+mlxsw_sp_vport_fid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 {
-	return mlxsw_sp_vport->vport.vfid->vfid;
+	return mlxsw_sp_vport->vport.f->fid;
 }
 
 static inline struct mlxsw_sp_port *
@@ -298,14 +298,14 @@ mlxsw_sp_port_vport_find(const struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 }
 
 static inline struct mlxsw_sp_port *
-mlxsw_sp_port_vport_find_by_vfid(const struct mlxsw_sp_port *mlxsw_sp_port,
-				 u16 vfid)
+mlxsw_sp_port_vport_find_by_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
+				u16 fid)
 {
 	struct mlxsw_sp_port *mlxsw_sp_vport;
 
 	list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
 			    vport.list) {
-		if (mlxsw_sp_vport_vfid_get(mlxsw_sp_vport) == vfid)
+		if (mlxsw_sp_vport_fid_get(mlxsw_sp_vport) == fid)
 			return mlxsw_sp_vport;
 	}
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 76f53c2..3e9ba58 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -57,11 +57,8 @@ static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port,
 {
 	u16 fid = vid;
 
-	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
-		u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
-
-		fid = mlxsw_sp_vfid_to_fid(vfid);
-	}
+	if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
+		fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
 
 	if (!fid)
 		fid = mlxsw_sp_port->pvid;
@@ -236,8 +233,9 @@ static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 	int err;
 
 	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
-		u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
+		u16 vfid, fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
 
+		vfid = mlxsw_sp_fid_to_vfid(fid);
 		return  __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
 						  set, true);
 	}
@@ -1136,12 +1134,8 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (!sfd_pl)
 		return -ENOMEM;
 
-	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
-		u16 tmp;
-
-		tmp = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
-		vport_fid = mlxsw_sp_vfid_to_fid(tmp);
-	}
+	if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
+		vport_fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
 
 	mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
 	do {
@@ -1313,11 +1307,10 @@ static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
 	}
 
 	if (mlxsw_sp_fid_is_vfid(fid)) {
-		u16 vfid = mlxsw_sp_fid_to_vfid(fid);
 		struct mlxsw_sp_port *mlxsw_sp_vport;
 
-		mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
-								  vfid);
+		mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
+								 fid);
 		if (!mlxsw_sp_vport) {
 			netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
 			goto just_remove;
@@ -1373,11 +1366,10 @@ static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
 	}
 
 	if (mlxsw_sp_fid_is_vfid(fid)) {
-		u16 vfid = mlxsw_sp_fid_to_vfid(fid);
 		struct mlxsw_sp_port *mlxsw_sp_vport;
 
-		mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
-								  vfid);
+		mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
+								 fid);
 		if (!mlxsw_sp_vport) {
 			netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
 			goto just_remove;
-- 
2.5.5

[patch net-next 18/23] mlxsw: spectrum: Check if port is vPort using its VID

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:16:38

From: Ido Schimmel <redacted>

When L3 interfaces will be introduced a vPort won't necessarily have a
FID assigned to it. This can happen if it's not member in a bridge (in
which case it's assigned a vFID) or doesn't have an IP address (in which
case it's assigned an rFID).

Therefore, instead check the VID parameter to test whether a port is a
vPort or not.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index d6cf6de..1d34419 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -259,12 +259,6 @@ mlxsw_sp_port_lagged_get(struct mlxsw_sp *mlxsw_sp, u16 lag_id, u8 port_index)
 	return mlxsw_sp_port && mlxsw_sp_port->lagged ? mlxsw_sp_port : NULL;
 }
 
-static inline bool
-mlxsw_sp_port_is_vport(const struct mlxsw_sp_port *mlxsw_sp_port)
-{
-	return mlxsw_sp_port->vport.f;
-}
-
 static inline struct net_device *
 mlxsw_sp_vport_br_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 {
@@ -277,6 +271,14 @@ mlxsw_sp_vport_vid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 	return mlxsw_sp_vport->vport.vid;
 }
 
+static inline bool
+mlxsw_sp_port_is_vport(const struct mlxsw_sp_port *mlxsw_sp_port)
+{
+	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
+
+	return vid != 0;
+}
+
 static inline u16
 mlxsw_sp_vport_fid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 {
-- 
2.5.5

[patch net-next 23/23] mlxsw: spectrum: Add debug prints

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:18:18

From: Ido Schimmel <redacted>

For debug purposes, it's useful to know the order in which the driver
responds to changes in the topology of its upper devices.

Add debug prints to signal these events.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c           | 10 ++++++++++
 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c |  4 ++++
 2 files changed, 14 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 9f48ec5..d23948b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2589,6 +2589,9 @@ mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
 	mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl,
 						mlxsw_sp_port->local_port);
 
+	netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using Port=%d, FID=%d\n",
+		   mlxsw_sp_port->local_port, fid);
+
 	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
 }
 
@@ -2603,6 +2606,9 @@ mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
 	mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
 	mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
 
+	netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using LAG ID=%d, FID=%d\n",
+		   mlxsw_sp_port->lag_id, fid);
+
 	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
 }
 
@@ -3174,6 +3180,8 @@ static int mlxsw_sp_vport_br_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, f);
 	f->ref_count++;
 
+	netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", f->fid);
+
 	return 0;
 
 err_vport_fid_map:
@@ -3188,6 +3196,8 @@ static void mlxsw_sp_vport_br_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
 {
 	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
 
+	netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);
+
 	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
 
 	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 7c2b0f8..a0c7376 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -488,6 +488,8 @@ static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 
 	f->ref_count++;
 
+	netdev_dbg(mlxsw_sp_port->dev, "Joined FID=%d\n", fid);
+
 	return 0;
 }
 
@@ -500,6 +502,8 @@ static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (WARN_ON(!f))
 		return;
 
+	netdev_dbg(mlxsw_sp_port->dev, "Left FID=%d\n", fid);
+
 	mlxsw_sp_port_fdb_flush(mlxsw_sp_port, fid);
 
 	if (--f->ref_count == 0)
-- 
2.5.5

[patch net-next 02/23] mlxsw: spectrum: Sanitize port netdev upper devices

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:18:18

From: Ido Schimmel <redacted>

We currently only support the following upper devices for port netdevs:
1) Bridge
2) LAG (bond / team)
3) VLAN

Any other device is forbidden, so return an error.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 3d57008..b47e3fb 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3034,6 +3034,10 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 	switch (event) {
 	case NETDEV_PRECHANGEUPPER:
 		upper_dev = info->upper_dev;
+		if (!is_vlan_dev(upper_dev) &&
+		    !netif_is_lag_master(upper_dev) &&
+		    !netif_is_bridge_master(upper_dev))
+			return -EINVAL;
 		if (!info->master || !info->linking)
 			break;
 		/* HW limitation forbids to put ports to multiple bridges. */
@@ -3070,6 +3074,9 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 			else
 				err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
 							      upper_dev);
+		} else {
+			err = -EINVAL;
+			WARN_ON(1);
 		}
 		break;
 	}
-- 
2.5.5

[patch net-next 13/23] mlxsw: spectrum: Use FID instead of vFID to setup flooding

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:18:18

From: Ido Schimmel <redacted>

Use a FID index instead of vFID and ease the transition towards a
generic FID struct.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c           | 15 +++++++--------
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h           |  2 +-
 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c |  5 ++++-
 3 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 6df944b..7a75a45 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -793,9 +793,9 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 		goto err_port_vport_create;
 	}
 
+	fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
 	if (!vfid->nr_vports) {
-		err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid,
-					       true);
+		err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, fid, true);
 		if (err) {
 			netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
 				   vfid->vfid);
@@ -815,7 +815,6 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 		}
 	}
 
-	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",
@@ -858,7 +857,7 @@ err_vport_fid_map:
 		mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
 err_port_vp_mode_trans:
 	if (!vfid->nr_vports)
-		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false);
+		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, fid, false);
 err_vport_flood_set:
 	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 err_port_vport_create:
@@ -3260,7 +3259,7 @@ static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 		goto err_port_vid_learning_set;
 	}
 
-	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false);
+	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, fid, false);
 	if (err) {
 		netdev_err(dev, "Failed clear to clear flooding\n");
 		goto err_vport_flood_set;
@@ -3320,7 +3319,8 @@ static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 		}
 	}
 
-	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true);
+	fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
+	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, fid, true);
 	if (err) {
 		netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
 			   vfid->vfid);
@@ -3344,7 +3344,6 @@ static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 		goto err_vport_fid_unmap;
 	}
 
-	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",
@@ -3371,7 +3370,7 @@ err_vport_fid_map:
 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);
+	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, fid, false);
 err_port_flood_set:
 	if (!vfid->nr_vports)
 		mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 58a2a5d..0ae929e 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -366,7 +366,7 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 			  u16 vid);
 int mlxsw_sp_port_kill_vid(struct net_device *dev,
 			   __be16 __always_unused proto, u16 vid);
-int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
+int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 			     bool set);
 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port);
 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 02c126c..76f53c2 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -260,12 +260,15 @@ err_port_flood_set:
 	return err;
 }
 
-int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
+int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 			     bool set)
 {
+	u16 vfid;
+
 	/* In case of vFIDs, index into the flooding table is relative to
 	 * the start of the vFIDs range.
 	 */
+	vfid = mlxsw_sp_fid_to_vfid(fid);
 	return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
 					 false);
 }
-- 
2.5.5

[patch net-next 20/23] mlxsw: spectrum: Don't count on FID being present

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:18:18

From: Ido Schimmel <redacted>

Not all vPorts will have FIDs assigned to them, so make sure functions
first test for FID presence.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c           |  4 +++-
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h           |  4 ++--
 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 11 ++++++-----
 3 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index ea007f0..0c42515 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3323,7 +3323,9 @@ mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
 
 	list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
 			    vport.list) {
-		if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
+		struct net_device *dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
+
+		if (dev && dev == br_dev)
 			return false;
 	}
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index a6dd295..f419535 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -290,7 +290,7 @@ mlxsw_sp_vport_br_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 {
 	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
 
-	return f->dev;
+	return f ? f->dev : NULL;
 }
 
 static inline struct mlxsw_sp_port *
@@ -317,7 +317,7 @@ mlxsw_sp_port_vport_find_by_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
 			    vport.list) {
 		struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
 
-		if (f->fid == fid)
+		if (f && f->fid == fid)
 			return mlxsw_sp_vport;
 	}
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index b31b2ce..fc34c46 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -55,10 +55,10 @@
 static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port,
 					u16 vid)
 {
+	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
 	u16 fid = vid;
 
-	if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
-		fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
+	fid = f ? f->fid : fid;
 
 	if (!fid)
 		fid = mlxsw_sp_port->pvid;
@@ -1196,7 +1196,8 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 {
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 	struct mlxsw_sp_port *tmp;
-	u16 vport_fid = 0;
+	struct mlxsw_sp_fid *f;
+	u16 vport_fid;
 	char *sfd_pl;
 	char mac[ETH_ALEN];
 	u16 fid;
@@ -1211,8 +1212,8 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (!sfd_pl)
 		return -ENOMEM;
 
-	if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
-		vport_fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
+	f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
+	vport_fid = f ? f->fid : 0;
 
 	mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
 	do {
-- 
2.5.5

[patch net-next 16/23] mlxsw: spectrum: Remove unused function argument

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:18:53

From: Ido Schimmel <redacted>

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index ad8e447..4869392 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2872,7 +2872,6 @@ err_col_port_add:
 }
 
 static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
-					struct net_device *br_dev,
 					bool flush_fdb);
 
 static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
@@ -2903,7 +2902,7 @@ static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 			continue;
 
 		br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
-		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, false);
+		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, false);
 	}
 
 	if (mlxsw_sp_port->bridged) {
@@ -2995,7 +2994,7 @@ static void mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
 		struct net_device *br_dev;
 
 		br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
-		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, true);
+		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, true);
 	}
 
 	mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
@@ -3290,7 +3289,6 @@ err_vport_br_vfid_join:
 }
 
 static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
-					struct net_device *br_dev,
 					bool flush_fdb)
 {
 	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
@@ -3369,8 +3367,7 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 			 */
 			if (!mlxsw_sp_vport)
 				return 0;
-			mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, upper_dev,
-						    true);
+			mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, true);
 		}
 	}
 
-- 
2.5.5

[patch net-next 10/23] mlxsw: spectrum: Remove redundant function argument

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:18:57

From: Ido Schimmel <redacted>

In all call sites 'only_uc' is set to false, so strip it.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c           | 12 +++++-------
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h           |  2 +-
 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c |  4 ++--
 3 files changed, 8 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index b999802..90cf6c5 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -791,7 +791,7 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 
 	if (!vfid->nr_vports) {
 		err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid,
-					       true, false);
+					       true);
 		if (err) {
 			netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
 				   vfid->vfid);
@@ -859,8 +859,7 @@ err_port_vid_to_fid_set:
 		mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
 err_port_vp_mode_trans:
 	if (!vfid->nr_vports)
-		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
-					 false);
+		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false);
 err_vport_flood_set:
 	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 err_port_vport_create:
@@ -3267,8 +3266,7 @@ static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 		goto err_port_vid_learning_set;
 	}
 
-	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
-				       false);
+	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false);
 	if (err) {
 		netdev_err(dev, "Failed clear to clear flooding\n");
 		goto err_vport_flood_set;
@@ -3327,7 +3325,7 @@ static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 		}
 	}
 
-	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
+	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true);
 	if (err) {
 		netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
 			   vfid->vfid);
@@ -3386,7 +3384,7 @@ err_port_vid_to_fid_validate:
 err_port_vid_to_fid_invalidate:
 	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, false);
+	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false);
 err_port_flood_set:
 	if (!vfid->nr_vports)
 		mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 5da98b4..58a2a5d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -367,7 +367,7 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 int mlxsw_sp_port_kill_vid(struct net_device *dev,
 			   __be16 __always_unused proto, u16 vid);
 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
-			     bool set, bool only_uc);
+			     bool set);
 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port);
 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid);
 int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 3710f19..02c126c 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -261,13 +261,13 @@ err_port_flood_set:
 }
 
 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
-			     bool set, bool only_uc)
+			     bool set)
 {
 	/* In case of vFIDs, index into the flooding table is relative to
 	 * the start of the vFIDs range.
 	 */
 	return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
-					 only_uc);
+					 false);
 }
 
 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
-- 
2.5.5

[patch net-next 12/23] mlxsw: spectrum: Create a function to map vPort's FID

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:19:04

From: Ido Schimmel <redacted>

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 <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 84 ++++++++++++--------------
 1 file changed, 38 insertions(+), 46 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 4f53dd2..6df944b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -745,6 +745,16 @@ 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)
 {
@@ -752,6 +762,7 @@ int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 	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
@@ -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);
@@ -844,10 +852,8 @@ err_port_stp_state_set:
 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:
@@ -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
@@ -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);
@@ -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);
@@ -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);
@@ -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);
@@ -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);
@@ -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. */
@@ -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);
-- 
2.5.5

[patch net-next 19/23] mlxsw: spectrum: Add FID get / set functions

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:19:05

From: Ido Schimmel <redacted>

As previously explained, not all vPorts will be assigned FIDs, so instead
of returning the FID index of a vPort, return a pointer to its FID
struct. This will allow us to know whether it's legal to access the
vPort's FID parameters such as index and device.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c     | 17 ++++++-------
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h     | 28 +++++++++++++++-------
 .../ethernet/mellanox/mlxsw/spectrum_switchdev.c   |  8 +++----
 3 files changed, 32 insertions(+), 21 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 08f3f51..ea007f0 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -776,7 +776,7 @@ static int mlxsw_sp_vport_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport)
 	if (err)
 		goto err_vport_fid_map;
 
-	mlxsw_sp_vport->vport.f = f;
+	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, f);
 	f->ref_count++;
 
 	return 0;
@@ -792,9 +792,9 @@ err_vport_flood_set:
 
 static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
 {
-	struct mlxsw_sp_fid *f = mlxsw_sp_vport->vport.f;
+	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
 
-	mlxsw_sp_vport->vport.f = NULL;
+	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
 
 	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
 
@@ -2639,7 +2639,8 @@ static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport,
 		return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport,
 							     fid);
 	else
-		return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_vport, fid);
+		return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_vport,
+							   fid);
 }
 
 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
@@ -3229,7 +3230,7 @@ static int mlxsw_sp_vport_br_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport,
 	if (err)
 		goto err_vport_fid_map;
 
-	mlxsw_sp_vport->vport.f = f;
+	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, f);
 	f->ref_count++;
 
 	return 0;
@@ -3244,13 +3245,13 @@ err_vport_flood_set:
 
 static void mlxsw_sp_vport_br_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
 {
-	struct mlxsw_sp_fid *f = mlxsw_sp_vport->vport.f;
+	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
 
 	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
 
 	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
 
-	mlxsw_sp_vport->vport.f = NULL;
+	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
 	if (--f->ref_count == 0)
 		mlxsw_sp_br_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
 }
@@ -3293,8 +3294,8 @@ err_vport_br_vfid_join:
 static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 					bool flush_fdb)
 {
+	u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_vport)->fid;
 	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
-	u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
 
 	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 1d34419..a6dd295 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -259,12 +259,6 @@ mlxsw_sp_port_lagged_get(struct mlxsw_sp *mlxsw_sp, u16 lag_id, u8 port_index)
 	return mlxsw_sp_port && mlxsw_sp_port->lagged ? mlxsw_sp_port : NULL;
 }
 
-static inline struct net_device *
-mlxsw_sp_vport_br_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
-{
-	return mlxsw_sp_vport->vport.f->dev;
-}
-
 static inline u16
 mlxsw_sp_vport_vid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 {
@@ -279,10 +273,24 @@ mlxsw_sp_port_is_vport(const struct mlxsw_sp_port *mlxsw_sp_port)
 	return vid != 0;
 }
 
-static inline u16
+static inline void mlxsw_sp_vport_fid_set(struct mlxsw_sp_port *mlxsw_sp_vport,
+					  struct mlxsw_sp_fid *f)
+{
+	mlxsw_sp_vport->vport.f = f;
+}
+
+static inline struct mlxsw_sp_fid *
 mlxsw_sp_vport_fid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 {
-	return mlxsw_sp_vport->vport.f->fid;
+	return mlxsw_sp_vport->vport.f;
+}
+
+static inline struct net_device *
+mlxsw_sp_vport_br_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
+{
+	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
+
+	return f->dev;
 }
 
 static inline struct mlxsw_sp_port *
@@ -307,7 +315,9 @@ mlxsw_sp_port_vport_find_by_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
 
 	list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
 			    vport.list) {
-		if (mlxsw_sp_vport_fid_get(mlxsw_sp_vport) == fid)
+		struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
+
+		if (f->fid == fid)
 			return mlxsw_sp_vport;
 	}
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 6713769..b31b2ce 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -58,7 +58,7 @@ static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port,
 	u16 fid = vid;
 
 	if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
-		fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
+		fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
 
 	if (!fid)
 		fid = mlxsw_sp_port->pvid;
@@ -233,9 +233,9 @@ static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 	int err;
 
 	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
-		u16 vfid, fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
+		u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
+		u16 vfid = mlxsw_sp_fid_to_vfid(fid);
 
-		vfid = mlxsw_sp_fid_to_vfid(fid);
 		return  __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
 						  set, true);
 	}
@@ -1212,7 +1212,7 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 		return -ENOMEM;
 
 	if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
-		vport_fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
+		vport_fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
 
 	mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
 	do {
-- 
2.5.5

[patch net-next 09/23] mlxsw: spectrum: Use DECLARE_BITMAP() macro

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:19:32

From: Ido Schimmel <redacted>

There is a macro to do this kind of declarations, so use it.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 13b30ea..5da98b4 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -155,17 +155,17 @@ struct mlxsw_sp_sb {
 struct mlxsw_sp {
 	struct {
 		struct list_head list;
-		unsigned long mapped[BITS_TO_LONGS(MLXSW_SP_VFID_PORT_MAX)];
+		DECLARE_BITMAP(mapped, MLXSW_SP_VFID_PORT_MAX);
 	} port_vfids;
 	struct {
 		struct list_head list;
-		unsigned long mapped[BITS_TO_LONGS(MLXSW_SP_VFID_BR_MAX)];
+		DECLARE_BITMAP(mapped, MLXSW_SP_VFID_BR_MAX);
 	} br_vfids;
 	struct {
 		struct list_head list;
-		unsigned long mapped[BITS_TO_LONGS(MLXSW_SP_MID_MAX)];
+		DECLARE_BITMAP(mapped, MLXSW_SP_MID_MAX);
 	} br_mids;
-	unsigned long active_fids[BITS_TO_LONGS(VLAN_N_VID)];
+	DECLARE_BITMAP(active_fids, VLAN_N_VID);
 	struct mlxsw_sp_port **ports;
 	struct mlxsw_core *core;
 	const struct mlxsw_bus_info *bus_info;
-- 
2.5.5

[patch net-next 07/23] mlxsw: spectrum: Remove unnecessary function argument

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:19:51

From: Ido Schimmel <redacted>

The argument 'br_dev' is never used, so remove it.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 3500a72..cd85316 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2708,8 +2708,7 @@ static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
 	mlxsw_sp->master_bridge.ref_count++;
 }
 
-static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp,
-				       struct net_device *br_dev)
+static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp)
 {
 	if (--mlxsw_sp->master_bridge.ref_count == 0)
 		mlxsw_sp->master_bridge.dev = NULL;
@@ -2911,7 +2910,7 @@ static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (mlxsw_sp_port->bridged) {
 		mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
 		mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false);
-		mlxsw_sp_master_bridge_dec(mlxsw_sp, NULL);
+		mlxsw_sp_master_bridge_dec(mlxsw_sp);
 	}
 
 	if (lag->ref_count == 1) {
@@ -3055,7 +3054,7 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 				mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
 			} else {
 				mlxsw_sp_port_bridge_leave(mlxsw_sp_port, true);
-				mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
+				mlxsw_sp_master_bridge_dec(mlxsw_sp);
 			}
 		} else if (netif_is_lag_master(upper_dev)) {
 			if (info->linking)
-- 
2.5.5

[patch net-next 01/23] mlxsw: spectrum: Use notifier_from_errno() in notifier block

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:20:03

From: Ido Schimmel <redacted>

Instead of checking the error value and returning NOTIFY_BAD, just use
notifier_from_errno() and simplify the code.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 92 ++++++++------------------
 1 file changed, 29 insertions(+), 63 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 6f9e3dd..3d57008 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -49,6 +49,7 @@
 #include <linux/jiffies.h>
 #include <linux/bitops.h>
 #include <linux/list.h>
+#include <linux/notifier.h>
 #include <linux/dcbnl.h>
 #include <net/switchdev.h>
 #include <generated/utsrelease.h>
@@ -3024,7 +3025,7 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 	struct mlxsw_sp_port *mlxsw_sp_port;
 	struct net_device *upper_dev;
 	struct mlxsw_sp *mlxsw_sp;
-	int err;
+	int err = 0;
 
 	mlxsw_sp_port = netdev_priv(dev);
 	mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
@@ -3038,68 +3039,42 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 		/* HW limitation forbids to put ports to multiple bridges. */
 		if (netif_is_bridge_master(upper_dev) &&
 		    !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
-			return NOTIFY_BAD;
+			return -EINVAL;
 		if (netif_is_lag_master(upper_dev) &&
 		    !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
 					       info->upper_info))
-			return NOTIFY_BAD;
+			return -EINVAL;
 		break;
 	case NETDEV_CHANGEUPPER:
 		upper_dev = info->upper_dev;
 		if (is_vlan_dev(upper_dev)) {
-			if (info->linking) {
+			if (info->linking)
 				err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
 							      upper_dev);
-				if (err) {
-					netdev_err(dev, "Failed to link VLAN device\n");
-					return NOTIFY_BAD;
-				}
-			} else {
+			else
 				err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
 								upper_dev);
-				if (err) {
-					netdev_err(dev, "Failed to unlink VLAN device\n");
-					return NOTIFY_BAD;
-				}
-			}
 		} else if (netif_is_bridge_master(upper_dev)) {
 			if (info->linking) {
 				err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
-				if (err) {
-					netdev_err(dev, "Failed to join bridge\n");
-					return NOTIFY_BAD;
-				}
 				mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
 			} else {
 				err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port,
 								 true);
 				mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
-				if (err) {
-					netdev_err(dev, "Failed to leave bridge\n");
-					return NOTIFY_BAD;
-				}
 			}
 		} else if (netif_is_lag_master(upper_dev)) {
-			if (info->linking) {
+			if (info->linking)
 				err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
 							     upper_dev);
-				if (err) {
-					netdev_err(dev, "Failed to join link aggregation\n");
-					return NOTIFY_BAD;
-				}
-			} else {
+			else
 				err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
 							      upper_dev);
-				if (err) {
-					netdev_err(dev, "Failed to leave link aggregation\n");
-					return NOTIFY_BAD;
-				}
-			}
 		}
 		break;
 	}
 
-	return NOTIFY_DONE;
+	return err;
 }
 
 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
@@ -3123,7 +3098,7 @@ static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
 		break;
 	}
 
-	return NOTIFY_DONE;
+	return 0;
 }
 
 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
@@ -3137,7 +3112,7 @@ static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
 		return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
 	}
 
-	return NOTIFY_DONE;
+	return 0;
 }
 
 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
@@ -3150,12 +3125,12 @@ static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
 	netdev_for_each_lower_dev(lag_dev, dev, iter) {
 		if (mlxsw_sp_port_dev_check(dev)) {
 			ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
-			if (ret == NOTIFY_BAD)
+			if (ret)
 				return ret;
 		}
 	}
 
-	return NOTIFY_DONE;
+	return 0;
 }
 
 static struct mlxsw_sp_vfid *
@@ -3446,7 +3421,7 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 	struct netdev_notifier_changeupper_info *info = ptr;
 	struct mlxsw_sp_port *mlxsw_sp_vport;
 	struct net_device *upper_dev;
-	int err;
+	int err = 0;
 
 	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
 
@@ -3456,13 +3431,13 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 		if (!info->master || !info->linking)
 			break;
 		if (!netif_is_bridge_master(upper_dev))
-			return NOTIFY_BAD;
+			return -EINVAL;
 		/* We can't have multiple VLAN interfaces configured on
 		 * the same port and being members in the same bridge.
 		 */
 		if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
 						       upper_dev))
-			return NOTIFY_BAD;
+			return -EINVAL;
 		break;
 	case NETDEV_CHANGEUPPER:
 		upper_dev = info->upper_dev;
@@ -3471,31 +3446,23 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 		if (info->linking) {
 			if (!mlxsw_sp_vport) {
 				WARN_ON(!mlxsw_sp_vport);
-				return NOTIFY_BAD;
+				return -EINVAL;
 			}
 			err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
 							 upper_dev);
-			if (err) {
-				netdev_err(dev, "Failed to join bridge\n");
-				return NOTIFY_BAD;
-			}
 		} else {
 			/* We ignore bridge's unlinking notifications if vPort
 			 * is gone, since we already left the bridge when the
 			 * VLAN device was unlinked from the real device.
 			 */
 			if (!mlxsw_sp_vport)
-				return NOTIFY_DONE;
+				return 0;
 			err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
 							  upper_dev, true);
-			if (err) {
-				netdev_err(dev, "Failed to leave bridge\n");
-				return NOTIFY_BAD;
-			}
 		}
 	}
 
-	return NOTIFY_DONE;
+	return err;
 }
 
 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
@@ -3510,12 +3477,12 @@ static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
 		if (mlxsw_sp_port_dev_check(dev)) {
 			ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
 							     vid);
-			if (ret == NOTIFY_BAD)
+			if (ret)
 				return ret;
 		}
 	}
 
-	return NOTIFY_DONE;
+	return 0;
 }
 
 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
@@ -3531,24 +3498,23 @@ static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
 		return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
 							  vid);
 
-	return NOTIFY_DONE;
+	return 0;
 }
 
 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
 				    unsigned long event, void *ptr)
 {
 	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+	int err = 0;
 
 	if (mlxsw_sp_port_dev_check(dev))
-		return mlxsw_sp_netdevice_port_event(dev, event, ptr);
-
-	if (netif_is_lag_master(dev))
-		return mlxsw_sp_netdevice_lag_event(dev, event, ptr);
-
-	if (is_vlan_dev(dev))
-		return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
+		err = mlxsw_sp_netdevice_port_event(dev, event, ptr);
+	else if (netif_is_lag_master(dev))
+		err = mlxsw_sp_netdevice_lag_event(dev, event, ptr);
+	else if (is_vlan_dev(dev))
+		err = mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
 
-	return NOTIFY_DONE;
+	return notifier_from_errno(err);
 }
 
 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
-- 
2.5.5

[patch net-next 22/23] mlxsw: spectrum: Free resources upon vPort destruction

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:22:06

From: Ido Schimmel <redacted>

There are situations in which a vPort is destroyed while still holding
references to device's resources such as FIDs and FDB records. This can
happen, for example, when a VLAN device is deleted while still being
bridged.

Instead of trying to make sure vPort destruction is invoked when it no
longer uses device's resources, just free them upon destruction. This
simplifies the code, as we no longer need to take different situations
into account when events are received - cleanup is taken care of in one
place.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 49 ++++++++------------------
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h |  1 +
 2 files changed, 15 insertions(+), 35 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 2b1748d..9f48ec5 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -660,6 +660,8 @@ static int mlxsw_sp_vfid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
 	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 }
 
+static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
+
 static struct mlxsw_sp_fid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
 						 u16 vid)
 {
@@ -685,6 +687,7 @@ static struct mlxsw_sp_fid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
 	if (!f)
 		goto err_allocate_vfid;
 
+	f->leave = mlxsw_sp_vport_vfid_leave;
 	f->fid = fid;
 	f->vid = vid;
 
@@ -887,6 +890,7 @@ 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_fid *f;
 	int err;
 
 	/* VLAN 0 is removed from HW filter when device goes down, but
@@ -921,7 +925,12 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev,
 		return err;
 	}
 
-	mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
+	/* Drop FID reference. If this was the last reference the
+	 * resources will be freed.
+	 */
+	f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
+	if (f && !WARN_ON(!f->leave))
+		f->leave(mlxsw_sp_vport);
 
 	/* When removing the last VLAN interface on a bridged port we need to
 	 * transition all active 802.1Q bridge VLANs to use VID to FID
@@ -2836,15 +2845,12 @@ err_col_port_add:
 	return err;
 }
 
-static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
-
 static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 				    struct net_device *lag_dev)
 {
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
-	struct mlxsw_sp_port *mlxsw_sp_vport;
-	struct mlxsw_sp_upper *lag;
 	u16 lag_id = mlxsw_sp_port->lag_id;
+	struct mlxsw_sp_upper *lag;
 
 	if (!mlxsw_sp_port->lagged)
 		return;
@@ -2854,21 +2860,6 @@ static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 	mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
 	mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
 
-	/* In case we leave a LAG device that has bridges built on top,
-	 * then their teardown sequence is never issued and we need to
-	 * invoke the necessary cleanup routines ourselves.
-	 */
-	list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
-			    vport.list) {
-		struct net_device *br_dev;
-
-		if (!mlxsw_sp_vport->bridged)
-			continue;
-
-		br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
-		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
-	}
-
 	if (mlxsw_sp_port->bridged) {
 		mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
 		mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
@@ -2947,17 +2938,6 @@ static void mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (WARN_ON(!mlxsw_sp_vport))
 		return;
 
-	/* When removing a VLAN device while still bridged we should first
-	 * remove it from the bridge, as we receive the bridge's notification
-	 * when the vPort is already gone.
-	 */
-	if (mlxsw_sp_vport->bridged) {
-		struct net_device *br_dev;
-
-		br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
-		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
-	}
-
 	mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
 }
 
@@ -3115,6 +3095,8 @@ static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
 				   MLXSW_SP_VFID_BR_MAX);
 }
 
+static void mlxsw_sp_vport_br_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
+
 static struct mlxsw_sp_fid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
 						    struct net_device *br_dev)
 {
@@ -3140,6 +3122,7 @@ static struct mlxsw_sp_fid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
 	if (!f)
 		goto err_allocate_vfid;
 
+	f->leave = mlxsw_sp_vport_br_vfid_leave;
 	f->fid = fid;
 	f->dev = br_dev;
 
@@ -3321,10 +3304,6 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 			err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
 							 upper_dev);
 		} else {
-			/* We ignore bridge's unlinking notifications if vPort
-			 * is gone, since we already left the bridge when the
-			 * VLAN device was unlinked from the real device.
-			 */
 			if (!mlxsw_sp_vport)
 				return 0;
 			mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 9122abb..36c9835 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -88,6 +88,7 @@ struct mlxsw_sp_upper {
 };
 
 struct mlxsw_sp_fid {
+	void (*leave)(struct mlxsw_sp_port *mlxsw_sp_vport);
 	struct list_head list;
 	unsigned int ref_count;
 	struct net_device *dev;
-- 
2.5.5

[patch net-next 05/23] mlxsw: spectrum: Use WARN_ON() return value

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:22:06

From: Ido Schimmel <redacted>

Instead of checking for a condition and then issue the warning, just do
it in one go and simplify the code.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index e55c685..f297b10 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2980,10 +2980,8 @@ static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
 	u16 vid = vlan_dev_vlan_id(vlan_dev);
 
 	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
-	if (!mlxsw_sp_vport) {
-		WARN_ON(!mlxsw_sp_vport);
+	if (WARN_ON(!mlxsw_sp_vport))
 		return -EINVAL;
-	}
 
 	mlxsw_sp_vport->dev = vlan_dev;
 
@@ -2997,10 +2995,8 @@ static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
 	u16 vid = vlan_dev_vlan_id(vlan_dev);
 
 	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
-	if (!mlxsw_sp_vport) {
-		WARN_ON(!mlxsw_sp_vport);
+	if (WARN_ON(!mlxsw_sp_vport))
 		return -EINVAL;
-	}
 
 	/* When removing a VLAN device while still bridged we should first
 	 * remove it from the bridge, as we receive the bridge's notification
@@ -3236,10 +3232,8 @@ static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 	int err;
 
 	vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
-	if (!vfid) {
-		WARN_ON(!vfid);
+	if (WARN_ON(!vfid))
 		return -EINVAL;
-	}
 
 	/* We need a vFID to go back to after leaving the bridge's vFID. */
 	new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
@@ -3454,10 +3448,8 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 	case NETDEV_CHANGEUPPER:
 		upper_dev = info->upper_dev;
 		if (info->linking) {
-			if (!mlxsw_sp_vport) {
-				WARN_ON(!mlxsw_sp_vport);
+			if (WARN_ON(!mlxsw_sp_vport))
 				return -EINVAL;
-			}
 			err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
 							 upper_dev);
 		} else {
-- 
2.5.5

[patch net-next 21/23] mlxsw: spectrum: Refactor FDB flushing logic

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:22:06

From: Ido Schimmel <redacted>

FDB entries are learned using {Port / LAG ID, FID} and therefore should
be flushed whenever a port (vPort) leaves its FID (vFID).

However, when the bridge port is a LAG device (or a VLAN device on top),
then FDB flushing is conditional. Ports removed from such LAG
configurations must not trigger flushing, as other ports might still be
members in the LAG and therefore the bridge port is still active.

The decision whether to flush or not was previously computed in the
netdevice notification block, but in order to flush the entries when a
port leaves its FID this decision should be computed there.

Strip the notification block from this logic and instead move it to one
FDB flushing function that is invoked from both the FID / vFID leave
functions.

When port isn't member in LAG, FDB flushing should always occur.
Otherwise, it should occur only when the last port (vPort) member in the
LAG leaves the FID (vFID).

This will allow us - in the next patch - to simplify the cleanup code
paths that are hit whenever the topology above the port netdevs changes.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c     | 133 +++++++--------------
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h     |   1 +
 .../ethernet/mellanox/mlxsw/spectrum_switchdev.c   |   2 +
 3 files changed, 47 insertions(+), 89 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 0c42515..2b1748d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2535,16 +2535,37 @@ static struct mlxsw_driver mlxsw_sp_driver = {
 	.profile			= &mlxsw_sp_config_profile,
 };
 
-static int
-mlxsw_sp_port_fdb_flush_by_port(const struct mlxsw_sp_port *mlxsw_sp_port)
+static bool mlxsw_sp_lag_port_fid_member(struct mlxsw_sp_port *lag_port,
+					 u16 fid)
+{
+	if (mlxsw_sp_fid_is_vfid(fid))
+		return mlxsw_sp_port_vport_find_by_fid(lag_port, fid);
+	else
+		return test_bit(fid, lag_port->active_vlans);
+}
+
+static bool mlxsw_sp_port_fdb_should_flush(struct mlxsw_sp_port *mlxsw_sp_port,
+					   u16 fid)
 {
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
-	char sfdf_pl[MLXSW_REG_SFDF_LEN];
+	u8 local_port = mlxsw_sp_port->local_port;
+	u16 lag_id = mlxsw_sp_port->lag_id;
+	int i, count = 0;
 
-	mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT);
-	mlxsw_reg_sfdf_system_port_set(sfdf_pl, mlxsw_sp_port->local_port);
+	if (!mlxsw_sp_port->lagged)
+		return true;
 
-	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
+	for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
+		struct mlxsw_sp_port *lag_port;
+
+		lag_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
+		if (!lag_port || lag_port->local_port == local_port)
+			continue;
+		if (mlxsw_sp_lag_port_fid_member(lag_port, fid))
+			count++;
+	}
+
+	return !count;
 }
 
 static int
@@ -2563,18 +2584,6 @@ mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
 }
 
 static int
-mlxsw_sp_port_fdb_flush_by_lag_id(const struct mlxsw_sp_port *mlxsw_sp_port)
-{
-	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
-	char sfdf_pl[MLXSW_REG_SFDF_LEN];
-
-	mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG);
-	mlxsw_reg_sfdf_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
-
-	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
-}
-
-static int
 mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
 				      u16 fid)
 {
@@ -2588,59 +2597,16 @@ mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
 	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
 }
 
-static int
-__mlxsw_sp_port_fdb_flush(const struct mlxsw_sp_port *mlxsw_sp_port)
-{
-	int err, last_err = 0;
-	u16 vid;
-
-	for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
-		err = mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, vid);
-		if (err)
-			last_err = err;
-	}
-
-	return last_err;
-}
-
-static int
-__mlxsw_sp_port_fdb_flush_lagged(const struct mlxsw_sp_port *mlxsw_sp_port)
+int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
 {
-	int err, last_err = 0;
-	u16 vid;
-
-	for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
-		err = mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port, vid);
-		if (err)
-			last_err = err;
-	}
-
-	return last_err;
-}
-
-static int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port)
-{
-	if (!list_empty(&mlxsw_sp_port->vports_list))
-		if (mlxsw_sp_port->lagged)
-			return __mlxsw_sp_port_fdb_flush_lagged(mlxsw_sp_port);
-		else
-			return __mlxsw_sp_port_fdb_flush(mlxsw_sp_port);
-	else
-		if (mlxsw_sp_port->lagged)
-			return mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port);
-		else
-			return mlxsw_sp_port_fdb_flush_by_port(mlxsw_sp_port);
-}
+	if (!mlxsw_sp_port_fdb_should_flush(mlxsw_sp_port, fid))
+		return 0;
 
-static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport,
-				    u16 fid)
-{
-	if (mlxsw_sp_vport->lagged)
-		return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport,
+	if (mlxsw_sp_port->lagged)
+		return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port,
 							     fid);
 	else
-		return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_vport,
-							   fid);
+		return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, fid);
 }
 
 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
@@ -2693,14 +2659,10 @@ static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port,
 	return 0;
 }
 
-static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
-				       bool flush_fdb)
+static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
 {
 	struct net_device *dev = mlxsw_sp_port->dev;
 
-	if (flush_fdb && mlxsw_sp_port_fdb_flush(mlxsw_sp_port))
-		netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
-
 	mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
 
 	mlxsw_sp_master_bridge_dec(mlxsw_sp_port->mlxsw_sp);
@@ -2874,8 +2836,7 @@ err_col_port_add:
 	return err;
 }
 
-static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
-					bool flush_fdb);
+static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
 
 static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 				    struct net_device *lag_dev)
@@ -2905,19 +2866,16 @@ static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 			continue;
 
 		br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
-		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, false);
+		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
 	}
 
 	if (mlxsw_sp_port->bridged) {
 		mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
-		mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false);
+		mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
 	}
 
-	if (lag->ref_count == 1) {
-		if (mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port))
-			netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
+	if (lag->ref_count == 1)
 		mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
-	}
 
 	mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
 				     mlxsw_sp_port->local_port);
@@ -2997,7 +2955,7 @@ static void mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
 		struct net_device *br_dev;
 
 		br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
-		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, true);
+		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
 	}
 
 	mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
@@ -3053,7 +3011,7 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 				err = mlxsw_sp_port_bridge_join(mlxsw_sp_port,
 								upper_dev);
 			else
-				mlxsw_sp_port_bridge_leave(mlxsw_sp_port, true);
+				mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
 		} else if (netif_is_lag_master(upper_dev)) {
 			if (info->linking)
 				err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
@@ -3251,6 +3209,8 @@ static void mlxsw_sp_vport_br_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
 
 	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
 
+	mlxsw_sp_port_fdb_flush(mlxsw_sp_vport, f->fid);
+
 	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
 	if (--f->ref_count == 0)
 		mlxsw_sp_br_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
@@ -3291,10 +3251,8 @@ err_vport_br_vfid_join:
 	return err;
 }
 
-static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
-					bool flush_fdb)
+static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
 {
-	u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_vport)->fid;
 	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
 
 	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
@@ -3306,9 +3264,6 @@ static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 	mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
 				    MLXSW_REG_SPMS_STATE_FORWARDING);
 
-	if (flush_fdb)
-		mlxsw_sp_vport_fdb_flush(mlxsw_sp_vport, fid);
-
 	mlxsw_sp_vport->learning = 0;
 	mlxsw_sp_vport->learning_sync = 0;
 	mlxsw_sp_vport->uc_flood = 0;
@@ -3372,7 +3327,7 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 			 */
 			if (!mlxsw_sp_vport)
 				return 0;
-			mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, true);
+			mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
 		}
 	}
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index f419535..9122abb 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -382,6 +382,7 @@ int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 			     bool set);
 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port);
 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid);
+int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid);
 int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
 			  enum mlxsw_reg_qeec_hr hr, u8 index, u8 next_index,
 			  bool dwrr, u8 dwrr_weight);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index fc34c46..7c2b0f8 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -500,6 +500,8 @@ static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (WARN_ON(!f))
 		return;
 
+	mlxsw_sp_port_fdb_flush(mlxsw_sp_port, fid);
+
 	if (--f->ref_count == 0)
 		mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
 }
-- 
2.5.5

[patch net-next 11/23] mlxsw: spectrum: Use only one function to create vFIDs

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 21:59:49

From: Ido Schimmel <redacted>

Simplify the code and use only one function for vFID creation /
destruction.

Unlike before, the function receives a FID index as its argument and not
a vFID index. Instead of passing 0, now one would need to pass 4K, which
is the first vFID.

This is the first step in creating a generic FID struct that will be
used for all three types of FIDs.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 79 ++++++++++++--------------
 1 file changed, 37 insertions(+), 42 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 90cf6c5..4f53dd2 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -652,68 +652,61 @@ static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
 				   MLXSW_SP_VFID_PORT_MAX);
 }
 
-static int __mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid)
+static int mlxsw_sp_vfid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
 {
-	u16 fid = mlxsw_sp_vfid_to_fid(vfid);
 	char sfmr_pl[MLXSW_REG_SFMR_LEN];
 
-	mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, 0);
+	mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, 0);
 	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 }
 
-static void __mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid)
-{
-	u16 fid = mlxsw_sp_vfid_to_fid(vfid);
-	char sfmr_pl[MLXSW_REG_SFMR_LEN];
-
-	mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, fid, 0);
-	mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
-}
-
 static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
 						  u16 vid)
 {
 	struct device *dev = mlxsw_sp->bus_info->dev;
-	struct mlxsw_sp_vfid *vfid;
-	u16 n_vfid;
+	struct mlxsw_sp_vfid *f;
+	u16 vfid, fid;
 	int err;
 
-	n_vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
-	if (n_vfid == MLXSW_SP_VFID_PORT_MAX) {
+	vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
+	if (vfid == MLXSW_SP_VFID_PORT_MAX) {
 		dev_err(dev, "No available vFIDs\n");
 		return ERR_PTR(-ERANGE);
 	}
 
-	err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
+	fid = mlxsw_sp_vfid_to_fid(vfid);
+	err = mlxsw_sp_vfid_op(mlxsw_sp, fid, true);
 	if (err) {
-		dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
+		dev_err(dev, "Failed to create FID=%d\n", fid);
 		return ERR_PTR(err);
 	}
 
-	vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
-	if (!vfid)
+	f = kzalloc(sizeof(*f), GFP_KERNEL);
+	if (!f)
 		goto err_allocate_vfid;
 
-	vfid->vfid = n_vfid;
-	vfid->vid = vid;
+	f->vfid = vfid;
+	f->vid = vid;
 
-	list_add(&vfid->list, &mlxsw_sp->port_vfids.list);
-	set_bit(n_vfid, mlxsw_sp->port_vfids.mapped);
+	list_add(&f->list, &mlxsw_sp->port_vfids.list);
+	set_bit(vfid, mlxsw_sp->port_vfids.mapped);
 
-	return vfid;
+	return f;
 
 err_allocate_vfid:
-	__mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
+	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
 	return ERR_PTR(-ENOMEM);
 }
 
 static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
 				  struct mlxsw_sp_vfid *vfid)
 {
+	u16 fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
+
 	clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
 	list_del(&vfid->list);
 
-	__mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
+	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
 
 	kfree(vfid);
 }
@@ -3164,36 +3157,37 @@ static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
 						     struct net_device *br_dev)
 {
 	struct device *dev = mlxsw_sp->bus_info->dev;
-	struct mlxsw_sp_vfid *vfid;
-	u16 n_vfid;
+	struct mlxsw_sp_vfid *f;
+	u16 vfid, fid;
 	int err;
 
-	n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
-	if (n_vfid == MLXSW_SP_VFID_MAX) {
+	vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
+	if (vfid == MLXSW_SP_VFID_MAX) {
 		dev_err(dev, "No available vFIDs\n");
 		return ERR_PTR(-ERANGE);
 	}
 
-	err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
+	fid = mlxsw_sp_vfid_to_fid(vfid);
+	err = mlxsw_sp_vfid_op(mlxsw_sp, fid, true);
 	if (err) {
-		dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
+		dev_err(dev, "Failed to create FID=%d\n", fid);
 		return ERR_PTR(err);
 	}
 
-	vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
-	if (!vfid)
+	f = kzalloc(sizeof(*f), GFP_KERNEL);
+	if (!f)
 		goto err_allocate_vfid;
 
-	vfid->vfid = n_vfid;
-	vfid->br_dev = br_dev;
+	f->vfid = vfid;
+	f->br_dev = br_dev;
 
-	list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
-	set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
+	list_add(&f->list, &mlxsw_sp->br_vfids.list);
+	set_bit(mlxsw_sp_vfid_to_br_vfid(vfid), mlxsw_sp->br_vfids.mapped);
 
-	return vfid;
+	return f;
 
 err_allocate_vfid:
-	__mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
+	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
 	return ERR_PTR(-ENOMEM);
 }
 
@@ -3201,11 +3195,12 @@ static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
 				     struct mlxsw_sp_vfid *vfid)
 {
 	u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
+	u16 fid = mlxsw_sp_vfid_to_fid(vfid->vfid);
 
 	clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
 	list_del(&vfid->list);
 
-	__mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
+	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
 
 	kfree(vfid);
 }
-- 
2.5.5

[patch net-next 06/23] mlxsw: spectrum: Make unlinking functions return void

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 22:07:20

From: Ido Schimmel <redacted>

When responding to unlinking CHANGEUPPER notifications we shouldn't
return any value, as it's not checked by upper layers.

In addition, there's nothing the driver can do in case of failure, so it
should simply continue and try to free as much resources as possible and
not stop on first error.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 68 +++++++++++---------------
 1 file changed, 28 insertions(+), 40 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index f297b10..3500a72 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2673,8 +2673,8 @@ static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
 	return 0;
 }
 
-static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
-				      bool flush_fdb)
+static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
+				       bool flush_fdb)
 {
 	struct net_device *dev = mlxsw_sp_port->dev;
 
@@ -2691,7 +2691,7 @@ static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 	/* Add implicit VLAN interface in the device, so that untagged
 	 * packets will be classified to the default vFID.
 	 */
-	return mlxsw_sp_port_add_vid(dev, 0, 1);
+	mlxsw_sp_port_add_vid(dev, 0, 1);
 }
 
 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
@@ -2873,30 +2873,25 @@ err_col_port_add:
 	return err;
 }
 
-static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
-				       struct net_device *br_dev,
-				       bool flush_fdb);
+static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
+					struct net_device *br_dev,
+					bool flush_fdb);
 
-static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
-				   struct net_device *lag_dev)
+static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
+				    struct net_device *lag_dev)
 {
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 	struct mlxsw_sp_port *mlxsw_sp_vport;
 	struct mlxsw_sp_upper *lag;
 	u16 lag_id = mlxsw_sp_port->lag_id;
-	int err;
 
 	if (!mlxsw_sp_port->lagged)
-		return 0;
+		return;
 	lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
 	WARN_ON(lag->ref_count == 0);
 
-	err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
-	if (err)
-		return err;
-	err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
-	if (err)
-		return err;
+	mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
+	mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
 
 	/* In case we leave a LAG device that has bridges built on top,
 	 * then their teardown sequence is never issued and we need to
@@ -2922,16 +2917,13 @@ static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (lag->ref_count == 1) {
 		if (mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port))
 			netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
-		err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
-		if (err)
-			return err;
+		mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
 	}
 
 	mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
 				     mlxsw_sp_port->local_port);
 	mlxsw_sp_port->lagged = 0;
 	lag->ref_count--;
-	return 0;
 }
 
 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
@@ -2988,15 +2980,15 @@ static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
 	return 0;
 }
 
-static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
-				     struct net_device *vlan_dev)
+static void mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
+				      struct net_device *vlan_dev)
 {
 	struct mlxsw_sp_port *mlxsw_sp_vport;
 	u16 vid = vlan_dev_vlan_id(vlan_dev);
 
 	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
 	if (WARN_ON(!mlxsw_sp_vport))
-		return -EINVAL;
+		return;
 
 	/* When removing a VLAN device while still bridged we should first
 	 * remove it from the bridge, as we receive the bridge's notification
@@ -3010,8 +3002,6 @@ static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
 	}
 
 	mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
-
-	return 0;
 }
 
 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
@@ -3057,15 +3047,14 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 				err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
 							      upper_dev);
 			else
-				err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
-								upper_dev);
+				 mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
+							   upper_dev);
 		} else if (netif_is_bridge_master(upper_dev)) {
 			if (info->linking) {
 				err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
 				mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
 			} else {
-				err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port,
-								 true);
+				mlxsw_sp_port_bridge_leave(mlxsw_sp_port, true);
 				mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
 			}
 		} else if (netif_is_lag_master(upper_dev)) {
@@ -3073,8 +3062,8 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 				err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
 							     upper_dev);
 			else
-				err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
-							      upper_dev);
+				mlxsw_sp_port_lag_leave(mlxsw_sp_port,
+							upper_dev);
 		} else {
 			err = -EINVAL;
 			WARN_ON(1);
@@ -3221,9 +3210,9 @@ static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
 	kfree(vfid);
 }
 
-static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
-				       struct net_device *br_dev,
-				       bool flush_fdb)
+static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
+					struct net_device *br_dev,
+					bool flush_fdb)
 {
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
 	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
@@ -3233,7 +3222,7 @@ static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 
 	vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
 	if (WARN_ON(!vfid))
-		return -EINVAL;
+		return;
 
 	/* We need a vFID to go back to after leaving the bridge's vFID. */
 	new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
@@ -3242,7 +3231,7 @@ static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 		if (IS_ERR(new_vfid)) {
 			netdev_err(dev, "Failed to create vFID for VID=%d\n",
 				   vid);
-			return PTR_ERR(new_vfid);
+			return;
 		}
 	}
 
@@ -3306,7 +3295,7 @@ static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
 	mlxsw_sp_vport->uc_flood = 0;
 	mlxsw_sp_vport->bridged = 0;
 
-	return 0;
+	return;
 
 err_port_stp_state_set:
 err_vport_flood_set:
@@ -3316,7 +3305,6 @@ err_port_vid_to_fid_invalidate:
 	/* Rollback vFID only if new. */
 	if (!new_vfid->nr_vports)
 		mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
-	return err;
 }
 
 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
@@ -3459,8 +3447,8 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
 			 */
 			if (!mlxsw_sp_vport)
 				return 0;
-			err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
-							  upper_dev, true);
+			mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, upper_dev,
+						    true);
 		}
 	}
 
-- 
2.5.5

[patch net-next 17/23] mlxsw: spectrum: Use per-FID struct for the VLAN-aware bridge

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-20 22:15:57

From: Ido Schimmel <redacted>

In a very similar way to the vFIDs, make the first 4K FIDs - used in the
VLAN-aware bridge - use the new FID struct.

Upon first use of the FID by any of the ports do the following:

1) Create the FID
2) Setup a matching flooding entry
3) Create a mapping for the FID

Unlike vFIDs, upon creation of a FID we always create a global
VID-to-FID mapping, so that ports without upper vPorts can use it
instead of creating an explicit {Port, VID} to FID mapping.

When a port leaves a FID the reverse is performed. Whenever the FID's
reference count reaches zero the FID is deleted along with the global
mapping.

The per-FID struct will later allow us to configure L3 interfaces on top
of the VLAN-aware bridge.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c     |   2 +
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h     |   2 +-
 .../ethernet/mellanox/mlxsw/spectrum_switchdev.c   | 316 +++++++++++++--------
 3 files changed, 195 insertions(+), 125 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 4869392..08f3f51 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2396,6 +2396,7 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
 
 	mlxsw_sp->core = mlxsw_core;
 	mlxsw_sp->bus_info = mlxsw_bus_info;
+	INIT_LIST_HEAD(&mlxsw_sp->fids);
 	INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
 	INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
 	INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
@@ -2472,6 +2473,7 @@ static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
 	mlxsw_sp_traps_fini(mlxsw_sp);
 	mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
 	mlxsw_sp_ports_remove(mlxsw_sp);
+	WARN_ON(!list_empty(&mlxsw_sp->fids));
 }
 
 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index c973ab5..d6cf6de 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -165,7 +165,7 @@ struct mlxsw_sp {
 		struct list_head list;
 		DECLARE_BITMAP(mapped, MLXSW_SP_MID_MAX);
 	} br_mids;
-	DECLARE_BITMAP(active_fids, VLAN_N_VID);
+	struct list_head fids;	/* VLAN-aware bridge FIDs */
 	struct mlxsw_sp_port **ports;
 	struct mlxsw_core *core;
 	const struct mlxsw_bus_info *bus_info;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 3e9ba58..6713769 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -384,6 +384,192 @@ static int mlxsw_sp_port_attr_set(struct net_device *dev,
 	return err;
 }
 
+static struct mlxsw_sp_fid *mlxsw_sp_fid_find(struct mlxsw_sp *mlxsw_sp,
+					      u16 fid)
+{
+	struct mlxsw_sp_fid *f;
+
+	list_for_each_entry(f, &mlxsw_sp->fids, list)
+		if (f->fid == fid)
+			return f;
+
+	return NULL;
+}
+
+static int mlxsw_sp_fid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
+{
+	char sfmr_pl[MLXSW_REG_SFMR_LEN];
+
+	mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, fid);
+	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
+}
+
+static int mlxsw_sp_fid_map(struct mlxsw_sp *mlxsw_sp, u16 fid, bool valid)
+{
+	enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
+	char svfa_pl[MLXSW_REG_SVFA_LEN];
+
+	mlxsw_reg_svfa_pack(svfa_pl, 0, mt, valid, fid, fid);
+	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
+}
+
+static struct mlxsw_sp_fid *mlxsw_sp_fid_alloc(u16 fid)
+{
+	struct mlxsw_sp_fid *f;
+
+	f = kzalloc(sizeof(*f), GFP_KERNEL);
+	if (!f)
+		return NULL;
+
+	f->fid = fid;
+
+	return f;
+}
+
+static struct mlxsw_sp_fid *mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp,
+						u16 fid)
+{
+	struct mlxsw_sp_fid *f;
+	int err;
+
+	err = mlxsw_sp_fid_op(mlxsw_sp, fid, true);
+	if (err)
+		return ERR_PTR(err);
+
+	/* Although all the ports member in the FID might be using a
+	 * {Port, VID} to FID mapping, we create a global VID-to-FID
+	 * mapping. This allows a port to transition to VLAN mode,
+	 * knowing the global mapping exists.
+	 */
+	err = mlxsw_sp_fid_map(mlxsw_sp, fid, true);
+	if (err)
+		goto err_fid_map;
+
+	f = mlxsw_sp_fid_alloc(fid);
+	if (!f) {
+		err = -ENOMEM;
+		goto err_allocate_fid;
+	}
+
+	list_add(&f->list, &mlxsw_sp->fids);
+
+	return f;
+
+err_allocate_fid:
+	mlxsw_sp_fid_map(mlxsw_sp, fid, false);
+err_fid_map:
+	mlxsw_sp_fid_op(mlxsw_sp, fid, false);
+	return ERR_PTR(err);
+}
+
+static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp,
+				 struct mlxsw_sp_fid *f)
+{
+	u16 fid = f->fid;
+
+	list_del(&f->list);
+
+	kfree(f);
+
+	mlxsw_sp_fid_op(mlxsw_sp, fid, false);
+}
+
+static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
+				    u16 fid)
+{
+	struct mlxsw_sp_fid *f;
+
+	f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
+	if (!f) {
+		f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid);
+		if (IS_ERR(f))
+			return PTR_ERR(f);
+	}
+
+	f->ref_count++;
+
+	return 0;
+}
+
+static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
+				      u16 fid)
+{
+	struct mlxsw_sp_fid *f;
+
+	f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
+	if (WARN_ON(!f))
+		return;
+
+	if (--f->ref_count == 0)
+		mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
+}
+
+static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid,
+				 bool valid)
+{
+	enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
+
+	/* If port doesn't have vPorts, then it can use the global
+	 * VID-to-FID mapping.
+	 */
+	if (list_empty(&mlxsw_sp_port->vports_list))
+		return 0;
+
+	return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, valid, fid, fid);
+}
+
+static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
+				  u16 fid_begin, u16 fid_end)
+{
+	int fid, err;
+
+	for (fid = fid_begin; fid <= fid_end; fid++) {
+		err = __mlxsw_sp_port_fid_join(mlxsw_sp_port, fid);
+		if (err)
+			goto err_port_fid_join;
+	}
+
+	err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end,
+					true, false);
+	if (err)
+		goto err_port_flood_set;
+
+	for (fid = fid_begin; fid <= fid_end; fid++) {
+		err = mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, true);
+		if (err)
+			goto err_port_fid_map;
+	}
+
+	return 0;
+
+err_port_fid_map:
+	for (fid--; fid >= fid_begin; fid--)
+		mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
+	__mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
+				  false);
+err_port_flood_set:
+	fid = fid_end;
+err_port_fid_join:
+	for (fid--; fid >= fid_begin; fid--)
+		__mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
+	return err;
+}
+
+static void mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
+				    u16 fid_begin, u16 fid_end)
+{
+	int fid;
+
+	for (fid = fid_begin; fid <= fid_end; fid++)
+		mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
+
+	__mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
+				  false);
+
+	for (fid = fid_begin; fid <= fid_end; fid++)
+		__mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
+}
+
 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 				    u16 vid)
 {
@@ -441,55 +627,6 @@ err_port_allow_untagged_set:
 	return err;
 }
 
-static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
-{
-	char sfmr_pl[MLXSW_REG_SFMR_LEN];
-	int err;
-
-	mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
-	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
-
-	if (err)
-		return err;
-
-	set_bit(fid, mlxsw_sp->active_fids);
-	return 0;
-}
-
-static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
-{
-	char sfmr_pl[MLXSW_REG_SFMR_LEN];
-
-	clear_bit(fid, mlxsw_sp->active_fids);
-
-	mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID,
-			    fid, fid);
-	mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
-}
-
-static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
-{
-	enum mlxsw_reg_svfa_mt mt;
-
-	if (!list_empty(&mlxsw_sp_port->vports_list))
-		mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
-	else
-		mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
-
-	return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
-}
-
-static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
-{
-	enum mlxsw_reg_svfa_mt mt;
-
-	if (list_empty(&mlxsw_sp_port->vports_list))
-		return 0;
-
-	mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
-	return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
-}
-
 static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
 				  u16 vid_end)
 {
@@ -534,10 +671,8 @@ static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 				     u16 vid_begin, u16 vid_end,
 				     bool flag_untagged, bool flag_pvid)
 {
-	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 	struct net_device *dev = mlxsw_sp_port->dev;
-	u16 vid, last_visited_vid, old_pvid;
-	enum mlxsw_reg_svfa_mt mt;
+	u16 vid, old_pvid;
 	int err;
 
 	/* In case this is invoked with BRIDGE_FLAGS_SELF and port is
@@ -547,44 +682,10 @@ static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (!mlxsw_sp_port->bridged)
 		return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
 
-	for (vid = vid_begin; vid <= vid_end; vid++) {
-		if (!test_bit(vid, mlxsw_sp->active_fids)) {
-			err = mlxsw_sp_fid_create(mlxsw_sp, vid);
-			if (err) {
-				netdev_err(dev, "Failed to create FID=%d\n",
-					   vid);
-				return err;
-			}
-
-			/* When creating a FID, we set a VID to FID mapping
-			 * regardless of the port's mode.
-			 */
-			mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
-			err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
-							   true, vid, vid);
-			if (err) {
-				netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
-					   vid);
-				goto err_port_vid_to_fid_set;
-			}
-		}
-	}
-
-	/* Set FID mapping according to port's mode */
-	for (vid = vid_begin; vid <= vid_end; vid++) {
-		err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
-		if (err) {
-			netdev_err(dev, "Failed to map FID=%d", vid);
-			last_visited_vid = --vid;
-			goto err_port_fid_map;
-		}
-	}
-
-	err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
-					true, false);
+	err = mlxsw_sp_port_fid_join(mlxsw_sp_port, vid_begin, vid_end);
 	if (err) {
-		netdev_err(dev, "Failed to configure flooding\n");
-		goto err_port_flood_set;
+		netdev_err(dev, "Failed to join FIDs\n");
+		return err;
 	}
 
 	err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
@@ -629,10 +730,6 @@ static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 
 	return 0;
 
-err_port_vid_to_fid_set:
-	mlxsw_sp_fid_destroy(mlxsw_sp, vid);
-	return err;
-
 err_port_stp_state_set:
 	for (vid = vid_begin; vid <= vid_end; vid++)
 		clear_bit(vid, mlxsw_sp_port->active_vlans);
@@ -642,13 +739,7 @@ err_port_pvid_set:
 	__mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 				  false);
 err_port_vlans_set:
-	__mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false,
-				  false);
-err_port_flood_set:
-	last_visited_vid = vid_end;
-err_port_fid_map:
-	for (vid = last_visited_vid; vid >= vid_begin; vid--)
-		mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
+	mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 	return err;
 }
 
@@ -971,21 +1062,7 @@ static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 		}
 	}
 
-	err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
-					false, false);
-	if (err) {
-		netdev_err(dev, "Failed to clear flooding\n");
-		return err;
-	}
-
-	for (vid = vid_begin; vid <= vid_end; vid++) {
-		/* Remove FID mapping in case of Virtual mode */
-		err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
-		if (err) {
-			netdev_err(dev, "Failed to unmap FID=%d", vid);
-			return err;
-		}
-	}
+	mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 
 out:
 	/* Changing activity bits only if HW operation succeded */
@@ -1490,14 +1567,6 @@ static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
 	cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
 }
 
-static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
-{
-	u16 fid;
-
-	for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
-		mlxsw_sp_fid_destroy(mlxsw_sp, fid);
-}
-
 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
 {
 	return mlxsw_sp_fdb_init(mlxsw_sp);
@@ -1506,7 +1575,6 @@ int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
 {
 	mlxsw_sp_fdb_fini(mlxsw_sp);
-	mlxsw_sp_fids_fini(mlxsw_sp);
 }
 
 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
-- 
2.5.5

[patch net-next 08/23] mlxsw: spectrum: Centralize VLAN-aware bridge ref counting

From: Jiri Pirko <jiri@resnulli.us>
Date: 2016-06-21 01:22:24

From: Ido Schimmel <redacted>

We hold a reference count on the number of ports member in the
VLAN-aware bridge, as we only support one.

Instead of always incrementing / decrementing the reference count after
joining / leaving the bridge, simply do this accounting in the join /
leave functions.

Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 58 +++++++++++++-------------
 1 file changed, 30 insertions(+), 28 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index cd85316..b999802 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2651,7 +2651,28 @@ static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
 	return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
 }
 
-static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
+static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
+					 struct net_device *br_dev)
+{
+	return !mlxsw_sp->master_bridge.dev ||
+	       mlxsw_sp->master_bridge.dev == br_dev;
+}
+
+static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
+				       struct net_device *br_dev)
+{
+	mlxsw_sp->master_bridge.dev = br_dev;
+	mlxsw_sp->master_bridge.ref_count++;
+}
+
+static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp)
+{
+	if (--mlxsw_sp->master_bridge.ref_count == 0)
+		mlxsw_sp->master_bridge.dev = NULL;
+}
+
+static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port,
+				     struct net_device *br_dev)
 {
 	struct net_device *dev = mlxsw_sp_port->dev;
 	int err;
@@ -2665,6 +2686,8 @@ static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
 	if (err)
 		return err;
 
+	mlxsw_sp_master_bridge_inc(mlxsw_sp_port->mlxsw_sp, br_dev);
+
 	mlxsw_sp_port->learning = 1;
 	mlxsw_sp_port->learning_sync = 1;
 	mlxsw_sp_port->uc_flood = 1;
@@ -2683,6 +2706,8 @@ static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 
 	mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
 
+	mlxsw_sp_master_bridge_dec(mlxsw_sp_port->mlxsw_sp);
+
 	mlxsw_sp_port->learning = 0;
 	mlxsw_sp_port->learning_sync = 0;
 	mlxsw_sp_port->uc_flood = 0;
@@ -2694,26 +2719,6 @@ static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 	mlxsw_sp_port_add_vid(dev, 0, 1);
 }
 
-static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
-					 struct net_device *br_dev)
-{
-	return !mlxsw_sp->master_bridge.dev ||
-	       mlxsw_sp->master_bridge.dev == br_dev;
-}
-
-static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
-				       struct net_device *br_dev)
-{
-	mlxsw_sp->master_bridge.dev = br_dev;
-	mlxsw_sp->master_bridge.ref_count++;
-}
-
-static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp)
-{
-	if (--mlxsw_sp->master_bridge.ref_count == 0)
-		mlxsw_sp->master_bridge.dev = NULL;
-}
-
 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
 {
 	char sldr_pl[MLXSW_REG_SLDR_LEN];
@@ -2910,7 +2915,6 @@ static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (mlxsw_sp_port->bridged) {
 		mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
 		mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false);
-		mlxsw_sp_master_bridge_dec(mlxsw_sp);
 	}
 
 	if (lag->ref_count == 1) {
@@ -3049,13 +3053,11 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
 				 mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
 							   upper_dev);
 		} else if (netif_is_bridge_master(upper_dev)) {
-			if (info->linking) {
-				err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
-				mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
-			} else {
+			if (info->linking)
+				err = mlxsw_sp_port_bridge_join(mlxsw_sp_port,
+								upper_dev);
+			else
 				mlxsw_sp_port_bridge_leave(mlxsw_sp_port, true);
-				mlxsw_sp_master_bridge_dec(mlxsw_sp);
-			}
 		} else if (netif_is_lag_master(upper_dev)) {
 			if (info->linking)
 				err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
-- 
2.5.5

Re: [patch net-next 00/23] mlxsw: Preparation for IPv4 router

From: David Miller <davem@davemloft.net>
Date: 2016-06-21 09:14:58

From: Jiri Pirko <jiri@resnulli.us>
Date: Mon, 20 Jun 2016 23:03:58 +0200
From: Jiri Pirko <redacted>

Ido says:

This series prepares the driver for IPv4 router support. The router follow-up
patches are available at: https://github.com/jpirko/linux_mlxsw/tree/net-next_queue
 ...

Looks good, series applied, thanks.
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help