[PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

This patch set adds support for Rx/Tx capabilities on DPAA2 switch port
interfaces as well as fixing up some major blunders in how we take care
of the switching domains. The last patch actually moves the driver out
of staging now that the minimum requirements are met.

I am sending this directly towards the net-next tree so that I can use
the rest of the development cycle adding new features on top of the
current driver without worrying about merge conflicts between the
staging and net-next tree.

The control interface is comprised of 3 queues in total: Rx, Rx error
and Tx confirmation. In this patch set we only enable Rx and Tx conf.
All switch ports share the same queues when frames are redirected to the
CPU.  Information regarding the ingress switch port is passed through
frame metadata - the flow context field of the descriptor.

NAPI instances are also shared between switch net_devices and are
enabled when at least on one of the switch ports .dev_open() was called
and disabled when no switch port is still up.

Since the last version of this feature was submitted to the list, I
reworked how the switching and flooding domains are taken care of by the
driver, thus the switch is now able to also add the control port (the
queues that the CPU can dequeue from) into the flooding domains of a
port (broadcast, unknown unicast etc). With this, we are able to receive
and sent traffic from the switch interfaces.

Also, the capability to properly partition the DPSW object into multiple
switching domains was added so that when not under a bridge, the ports
are not actually capable to switch between them. This is possible by
adding a private FDB table per switch interface.  When multiple switch
interfaces are under the same bridge, they will all use the same FDB
table.

Another thing that is fixed in this patch set is how the driver handles
VLAN awareness. The DPAA2 switch is not capable to run as VLAN unaware
but this was not reflected in how the driver responded to requests to
change the VLAN awareness. In the last patch, this is fixed by
describing the switch interfaces as Rx VLAN filtering on [fixed] and
declining any request to join a VLAN unaware bridge.


Ioana Ciornei (15):
  staging: dpaa2-switch: remove broken learning and flooding support
  staging: dpaa2-switch: fix up initial forwarding configuration done by
    firmware
  staging: dpaa2-switch: remove obsolete .ndo_fdb_{add|del} callbacks
  staging: dpaa2-switch: get control interface attributes
  staging: dpaa2-switch: setup buffer pool and RX path rings
  staging: dpaa2-switch: setup dpio
  staging: dpaa2-switch: handle Rx path on control interface
  staging: dpaa2-switch: add .ndo_start_xmit() callback
  staging: dpaa2-switch: enable the control interface
  staging: dpaa2-switch: properly setup switching domains
  staging: dpaa2-switch: move the notifier register to module_init()
  staging: dpaa2-switch: accept only vlan-aware upper devices
  staging: dpaa2-switch: add fast-ageing on bridge leave
  staging: dpaa2-switch: prevent joining a bridge while VLAN uppers are
    present
  staging: dpaa2-switch: move the driver out of staging

 MAINTAINERS                                   |    6 +-
 drivers/net/ethernet/freescale/dpaa2/Kconfig  |    8 +
 drivers/net/ethernet/freescale/dpaa2/Makefile |    2 +
 .../freescale/dpaa2/dpaa2-switch-ethtool.c}   |    2 +-
 .../ethernet/freescale/dpaa2/dpaa2-switch.c}  | 1704 +++++++++++++----
 .../ethernet/freescale/dpaa2/dpaa2-switch.h   |  178 ++
 .../ethernet/freescale/dpaa2}/dpsw-cmd.h      |  128 +-
 .../ethernet/freescale/dpaa2}/dpsw.c          |  328 +++-
 .../ethernet/freescale/dpaa2}/dpsw.h          |  199 +-
 drivers/staging/Kconfig                       |    2 -
 drivers/staging/Makefile                      |    1 -
 drivers/staging/fsl-dpaa2/Kconfig             |   19 -
 drivers/staging/fsl-dpaa2/Makefile            |    6 -
 drivers/staging/fsl-dpaa2/ethsw/Makefile      |   10 -
 drivers/staging/fsl-dpaa2/ethsw/README        |  106 -
 drivers/staging/fsl-dpaa2/ethsw/TODO          |   13 -
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h       |   80 -
 17 files changed, 2097 insertions(+), 695 deletions(-)
 rename drivers/{staging/fsl-dpaa2/ethsw/ethsw-ethtool.c => net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c} (99%)
 rename drivers/{staging/fsl-dpaa2/ethsw/ethsw.c => net/ethernet/freescale/dpaa2/dpaa2-switch.c} (51%)
 create mode 100644 drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
 rename drivers/{staging/fsl-dpaa2/ethsw => net/ethernet/freescale/dpaa2}/dpsw-cmd.h (76%)
 rename drivers/{staging/fsl-dpaa2/ethsw => net/ethernet/freescale/dpaa2}/dpsw.c (83%)
 rename drivers/{staging/fsl-dpaa2/ethsw => net/ethernet/freescale/dpaa2}/dpsw.h (73%)
 delete mode 100644 drivers/staging/fsl-dpaa2/Kconfig
 delete mode 100644 drivers/staging/fsl-dpaa2/Makefile
 delete mode 100644 drivers/staging/fsl-dpaa2/ethsw/Makefile
 delete mode 100644 drivers/staging/fsl-dpaa2/ethsw/README
 delete mode 100644 drivers/staging/fsl-dpaa2/ethsw/TODO
 delete mode 100644 drivers/staging/fsl-dpaa2/ethsw/ethsw.h

-- 
2.30.0

[PATCH net-next 01/15] staging: dpaa2-switch: remove broken learning and flooding support

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

This patch is removing the current configuration of learning and
flooding states per switch port because they are essentially broken in
terms of integration with the switchdev APIs and the bridge
understanding of these states.

First of all, the learning state is a per switch port configuration
while the dpaa2-switch driver was using it to configure the entire
bridging domain. This is broken since the software learning state could
be out of sync with the hardware state when ports from the same bridging
domain are configured by the user with different learning parameters.

The BR_FLOOD flag has been misinterpreted as well. Instead of denoting
whether unicast traffic for which there is no FDB entry will be flooded
towards a given port, the dpaa2-switch used the flag to configure
whether or not a frame with an unknown destination received on a given
port should be flooded or not. In summary, it was used as ingress
setting instead of a egress one.

Also, remove the unnecessary call to dpsw_if_set_broadcast() and the API
definition. The HW default is to let all switch ports to be able to
flood broadcast traffic thus there is no need to call the API again.

Instead of trying to patch things up, just remove the support for the
moment so that we'll add it back cleanly once the driver is out of
staging.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h |  24 ----
 drivers/staging/fsl-dpaa2/ethsw/dpsw.c     |  93 ----------------
 drivers/staging/fsl-dpaa2/ethsw/dpsw.h     |  18 ---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c    | 123 ---------------------
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h    |   1 -
 5 files changed, 259 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
index 450841cc6ca8..2a921ed9594d 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
@@ -48,8 +48,6 @@
 #define DPSW_CMDID_IF_SET_MAX_FRAME_LENGTH  DPSW_CMD_ID(0x044)
 
 #define DPSW_CMDID_IF_GET_LINK_STATE        DPSW_CMD_ID(0x046)
-#define DPSW_CMDID_IF_SET_FLOODING          DPSW_CMD_ID(0x047)
-#define DPSW_CMDID_IF_SET_BROADCAST         DPSW_CMD_ID(0x048)
 
 #define DPSW_CMDID_IF_GET_TCI               DPSW_CMD_ID(0x04A)
 
@@ -68,7 +66,6 @@
 #define DPSW_CMDID_FDB_REMOVE_UNICAST       DPSW_CMD_ID(0x085)
 #define DPSW_CMDID_FDB_ADD_MULTICAST        DPSW_CMD_ID(0x086)
 #define DPSW_CMDID_FDB_REMOVE_MULTICAST     DPSW_CMD_ID(0x087)
-#define DPSW_CMDID_FDB_SET_LEARNING_MODE    DPSW_CMD_ID(0x088)
 #define DPSW_CMDID_FDB_DUMP                 DPSW_CMD_ID(0x08A)
 
 #define DPSW_CMDID_IF_GET_PORT_MAC_ADDR     DPSW_CMD_ID(0x0A7)
@@ -191,18 +188,6 @@ struct dpsw_rsp_get_attr {
 	__le64 options;
 };
 
-struct dpsw_cmd_if_set_flooding {
-	__le16 if_id;
-	/* from LSB: enable:1 */
-	u8 enable;
-};
-
-struct dpsw_cmd_if_set_broadcast {
-	__le16 if_id;
-	/* from LSB: enable:1 */
-	u8 enable;
-};
-
 #define DPSW_VLAN_ID_SHIFT	0
 #define DPSW_VLAN_ID_SIZE	12
 #define DPSW_DEI_SHIFT		12
@@ -350,15 +335,6 @@ struct dpsw_cmd_fdb_multicast_op {
 	__le64 if_id[4];
 };
 
-#define DPSW_LEARNING_MODE_SHIFT	0
-#define DPSW_LEARNING_MODE_SIZE		4
-
-struct dpsw_cmd_fdb_set_learning_mode {
-	__le16 fdb_id;
-	/* only the first 4 bits from LSB */
-	u8 mode;
-};
-
 struct dpsw_cmd_fdb_dump {
 	__le16 fdb_id;
 	__le16 pad0;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
index f8bfe779bd30..f7013d71dc84 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
@@ -431,68 +431,6 @@ int dpsw_if_get_link_state(struct fsl_mc_io *mc_io,
 	return 0;
 }
 
-/**
- * dpsw_if_set_flooding() - Enable Disable flooding for particular interface
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPSW object
- * @if_id:	Interface Identifier
- * @en:		1 - enable, 0 - disable
- *
- * Return:	Completion status. '0' on Success; Error code otherwise.
- */
-int dpsw_if_set_flooding(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 u16 if_id,
-			 u8 en)
-{
-	struct fsl_mc_command cmd = { 0 };
-	struct dpsw_cmd_if_set_flooding *cmd_params;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPSW_CMDID_IF_SET_FLOODING,
-					  cmd_flags,
-					  token);
-	cmd_params = (struct dpsw_cmd_if_set_flooding *)cmd.params;
-	cmd_params->if_id = cpu_to_le16(if_id);
-	dpsw_set_field(cmd_params->enable, ENABLE, en);
-
-	/* send command to mc*/
-	return mc_send_command(mc_io, &cmd);
-}
-
-/**
- * dpsw_if_set_broadcast() - Enable/disable broadcast for particular interface
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPSW object
- * @if_id:	Interface Identifier
- * @en:		1 - enable, 0 - disable
- *
- * Return:	Completion status. '0' on Success; Error code otherwise.
- */
-int dpsw_if_set_broadcast(struct fsl_mc_io *mc_io,
-			  u32 cmd_flags,
-			  u16 token,
-			  u16 if_id,
-			  u8 en)
-{
-	struct fsl_mc_command cmd = { 0 };
-	struct dpsw_cmd_if_set_broadcast *cmd_params;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPSW_CMDID_IF_SET_BROADCAST,
-					  cmd_flags,
-					  token);
-	cmd_params = (struct dpsw_cmd_if_set_broadcast *)cmd.params;
-	cmd_params->if_id = cpu_to_le16(if_id);
-	dpsw_set_field(cmd_params->enable, ENABLE, en);
-
-	/* send command to mc*/
-	return mc_send_command(mc_io, &cmd);
-}
-
 /**
  * dpsw_if_set_tci() - Set default VLAN Tag Control Information (TCI)
  * @mc_io:	Pointer to MC portal's I/O object
@@ -1151,37 +1089,6 @@ int dpsw_fdb_remove_multicast(struct fsl_mc_io *mc_io,
 	return mc_send_command(mc_io, &cmd);
 }
 
-/**
- * dpsw_fdb_set_learning_mode() - Define FDB learning mode
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPSW object
- * @fdb_id:	Forwarding Database Identifier
- * @mode:	Learning mode
- *
- * Return:	Completion status. '0' on Success; Error code otherwise.
- */
-int dpsw_fdb_set_learning_mode(struct fsl_mc_io *mc_io,
-			       u32 cmd_flags,
-			       u16 token,
-			       u16 fdb_id,
-			       enum dpsw_fdb_learning_mode mode)
-{
-	struct fsl_mc_command cmd = { 0 };
-	struct dpsw_cmd_fdb_set_learning_mode *cmd_params;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPSW_CMDID_FDB_SET_LEARNING_MODE,
-					  cmd_flags,
-					  token);
-	cmd_params = (struct dpsw_cmd_fdb_set_learning_mode *)cmd.params;
-	cmd_params->fdb_id = cpu_to_le16(fdb_id);
-	dpsw_set_field(cmd_params->mode, LEARNING_MODE, mode);
-
-	/* send command to mc*/
-	return mc_send_command(mc_io, &cmd);
-}
-
 /**
  * dpsw_get_api_version() - Get Data Path Switch API version
  * @mc_io:	Pointer to MC portal's I/O object
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
index 9cfd8a8e0197..bc6bcfb6893d 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
@@ -235,18 +235,6 @@ int dpsw_if_get_link_state(struct fsl_mc_io *mc_io,
 			   u16 if_id,
 			   struct dpsw_link_state *state);
 
-int dpsw_if_set_flooding(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 u16 if_id,
-			 u8 en);
-
-int dpsw_if_set_broadcast(struct fsl_mc_io *mc_io,
-			  u32 cmd_flags,
-			  u16 token,
-			  u16 if_id,
-			  u8 en);
-
 /**
  * struct dpsw_tci_cfg - Tag Control Information (TCI) configuration
  * @pcp: Priority Code Point (PCP): a 3-bit field which refers
@@ -555,12 +543,6 @@ enum dpsw_fdb_learning_mode {
 	DPSW_FDB_LEARNING_MODE_SECURE = 3
 };
 
-int dpsw_fdb_set_learning_mode(struct fsl_mc_io *mc_io,
-			       u32 cmd_flags,
-			       u16 token,
-			       u16 fdb_id,
-			       enum dpsw_fdb_learning_mode mode);
-
 /**
  * struct dpsw_fdb_attr - FDB Attributes
  * @max_fdb_entries: Number of FDB entries
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 703055e063ff..edcaf99c24fc 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -161,44 +161,6 @@ static int dpaa2_switch_port_add_vlan(struct ethsw_port_priv *port_priv,
 	return 0;
 }
 
-static int dpaa2_switch_set_learning(struct ethsw_core *ethsw, bool enable)
-{
-	enum dpsw_fdb_learning_mode learn_mode;
-	int err;
-
-	if (enable)
-		learn_mode = DPSW_FDB_LEARNING_MODE_HW;
-	else
-		learn_mode = DPSW_FDB_LEARNING_MODE_DIS;
-
-	err = dpsw_fdb_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
-					 learn_mode);
-	if (err) {
-		dev_err(ethsw->dev, "dpsw_fdb_set_learning_mode err %d\n", err);
-		return err;
-	}
-	ethsw->learning = enable;
-
-	return 0;
-}
-
-static int dpaa2_switch_port_set_flood(struct ethsw_port_priv *port_priv, bool enable)
-{
-	int err;
-
-	err = dpsw_if_set_flooding(port_priv->ethsw_data->mc_io, 0,
-				   port_priv->ethsw_data->dpsw_handle,
-				   port_priv->idx, enable);
-	if (err) {
-		netdev_err(port_priv->netdev,
-			   "dpsw_if_set_flooding err %d\n", err);
-		return err;
-	}
-	port_priv->flood = enable;
-
-	return 0;
-}
-
 static int dpaa2_switch_port_set_stp_state(struct ethsw_port_priv *port_priv, u8 state)
 {
 	struct dpsw_stp_cfg stp_cfg = {
@@ -908,41 +870,6 @@ static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev,
 	return dpaa2_switch_port_set_stp_state(port_priv, state);
 }
 
-static int
-dpaa2_switch_port_attr_br_flags_pre_set(struct net_device *netdev,
-					struct switchdev_brport_flags flags)
-{
-	if (flags.mask & ~(BR_LEARNING | BR_FLOOD))
-		return -EINVAL;
-
-	return 0;
-}
-
-static int
-dpaa2_switch_port_attr_br_flags_set(struct net_device *netdev,
-				    struct switchdev_brport_flags flags)
-{
-	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
-	int err = 0;
-
-	if (flags.mask & BR_LEARNING) {
-		/* Learning is enabled per switch */
-		err = dpaa2_switch_set_learning(port_priv->ethsw_data,
-						!!(flags.val & BR_LEARNING));
-		if (err)
-			return err;
-	}
-
-	if (flags.mask & BR_FLOOD) {
-		err = dpaa2_switch_port_set_flood(port_priv,
-						  !!(flags.val & BR_FLOOD));
-		if (err)
-			return err;
-	}
-
-	return 0;
-}
-
 static int dpaa2_switch_port_attr_set(struct net_device *netdev,
 				      const struct switchdev_attr *attr)
 {
@@ -953,14 +880,6 @@ static int dpaa2_switch_port_attr_set(struct net_device *netdev,
 		err = dpaa2_switch_port_attr_stp_state_set(netdev,
 							   attr->u.stp_state);
 		break;
-	case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
-		err = dpaa2_switch_port_attr_br_flags_pre_set(netdev,
-							      attr->u.brport_flags);
-		break;
-	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
-		err = dpaa2_switch_port_attr_br_flags_set(netdev,
-							  attr->u.brport_flags);
-		break;
 	case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 		/* VLANs are supported by default  */
 		break;
@@ -1232,24 +1151,6 @@ static int dpaa2_switch_port_bridge_join(struct net_device *netdev,
 		}
 	}
 
-	/* Enable flooding */
-	err = dpaa2_switch_port_set_flood(port_priv, 1);
-	if (!err)
-		port_priv->bridge_dev = upper_dev;
-
-	return err;
-}
-
-static int dpaa2_switch_port_bridge_leave(struct net_device *netdev)
-{
-	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
-	int err;
-
-	/* Disable flooding */
-	err = dpaa2_switch_port_set_flood(port_priv, 0);
-	if (!err)
-		port_priv->bridge_dev = NULL;
-
 	return err;
 }
 
@@ -1270,8 +1171,6 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
 		if (netif_is_bridge_master(upper_dev)) {
 			if (info->linking)
 				err = dpaa2_switch_port_bridge_join(netdev, upper_dev);
-			else
-				err = dpaa2_switch_port_bridge_leave(netdev);
 		}
 	}
 
@@ -1513,13 +1412,6 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 		goto err_close;
 	}
 
-	err = dpsw_fdb_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
-					 DPSW_FDB_LEARNING_MODE_HW);
-	if (err) {
-		dev_err(dev, "dpsw_fdb_set_learning_mode err %d\n", err);
-		goto err_close;
-	}
-
 	stp_cfg.vlan_id = DEFAULT_VLAN_ID;
 	stp_cfg.state = DPSW_STP_STATE_FORWARDING;
 
@@ -1531,15 +1423,6 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 				err, i);
 			goto err_close;
 		}
-
-		err = dpsw_if_set_broadcast(ethsw->mc_io, 0,
-					    ethsw->dpsw_handle, i, 1);
-		if (err) {
-			dev_err(dev,
-				"dpsw_if_set_broadcast err %d for port %d\n",
-				err, i);
-			goto err_close;
-		}
 	}
 
 	ethsw->workqueue = alloc_ordered_workqueue("%s_%d_ordered",
@@ -1689,9 +1572,6 @@ static int dpaa2_switch_probe_port(struct ethsw_core *ethsw,
 	port_priv->idx = port_idx;
 	port_priv->stp_state = BR_STATE_FORWARDING;
 
-	/* Flooding is implicitly enabled */
-	port_priv->flood = true;
-
 	SET_NETDEV_DEV(port_netdev, dev);
 	port_netdev->netdev_ops = &dpaa2_switch_port_ops;
 	port_netdev->ethtool_ops = &dpaa2_switch_port_ethtool_ops;
@@ -1756,9 +1636,6 @@ static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
 	/* DEFAULT_VLAN_ID is implicitly configured on the switch */
 	ethsw->vlans[DEFAULT_VLAN_ID] = ETHSW_VLAN_MEMBER;
 
-	/* Learning is implicitly enabled */
-	ethsw->learning = true;
-
 	ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports),
 			       GFP_KERNEL);
 	if (!(ethsw->ports)) {
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index 5f9211ccb1ef..448f60755eea 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -69,7 +69,6 @@ struct ethsw_core {
 	struct ethsw_port_priv		**ports;
 
 	u8				vlans[VLAN_VID_MASK + 1];
-	bool				learning;
 
 	struct notifier_block		port_nb;
 	struct notifier_block		port_switchdev_nb;
-- 
2.30.0

[PATCH net-next 02/15] staging: dpaa2-switch: fix up initial forwarding configuration done by firmware

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

By default, the DPSW object is configured with VLAN ID 1 in the VLAN
table, which all ports are member of. This entry in the VLAN table
selects the same FDB ID for all ports, meaning that forwarding between
ports is permitted. This is unlike the switchdev model, where each port
should operate as standalone by default.

To make the switch operate in standalone ports mode, we need the VLAN
table to select a unique FDB ID for each port. In order to do that, we
need to simply delete the VLAN 1 created automatically by firmware, and
let dpaa2_switch_port_init take over, by readding VLAN ID 1, but
pointing towards a unique FDB ID.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 80 ++++++++++++++++---------
 1 file changed, 51 insertions(+), 29 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index edcaf99c24fc..fa0ec54b49fa 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -3,7 +3,7 @@
  * DPAA2 Ethernet Switch driver
  *
  * Copyright 2014-2016 Freescale Semiconductor Inc.
- * Copyright 2017-2018 NXP
+ * Copyright 2017-2021 NXP
  *
  */
 
@@ -1365,6 +1365,8 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 {
 	struct device *dev = &sw_dev->dev;
 	struct ethsw_core *ethsw = dev_get_drvdata(dev);
+	struct dpsw_vlan_if_cfg vcfg = {0};
+	struct dpsw_tci_cfg tci_cfg = {0};
 	struct dpsw_stp_cfg stp_cfg;
 	int err;
 	u16 i;
@@ -1416,6 +1418,12 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 	stp_cfg.state = DPSW_STP_STATE_FORWARDING;
 
 	for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
+		err = dpsw_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle, i);
+		if (err) {
+			dev_err(dev, "dpsw_if_disable err %d\n", err);
+			goto err_close;
+		}
+
 		err = dpsw_if_set_stp(ethsw->mc_io, 0, ethsw->dpsw_handle, i,
 				      &stp_cfg);
 		if (err) {
@@ -1423,6 +1431,39 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 				err, i);
 			goto err_close;
 		}
+
+		/* Switch starts with all ports configured to VLAN 1. Need to
+		 * remove this setting to allow configuration at bridge join
+		 */
+		vcfg.num_ifs = 1;
+		vcfg.if_id[0] = i;
+		err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle,
+						   DEFAULT_VLAN_ID, &vcfg);
+		if (err) {
+			dev_err(dev, "dpsw_vlan_remove_if_untagged err %d\n",
+				err);
+			goto err_close;
+		}
+
+		tci_cfg.vlan_id = 4095;
+		err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, i, &tci_cfg);
+		if (err) {
+			dev_err(dev, "dpsw_if_set_tci err %d\n", err);
+			goto err_close;
+		}
+
+		err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
+					  DEFAULT_VLAN_ID, &vcfg);
+		if (err) {
+			dev_err(dev, "dpsw_vlan_remove_if err %d\n", err);
+			goto err_close;
+		}
+	}
+
+	err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, DEFAULT_VLAN_ID);
+	if (err) {
+		dev_err(dev, "dpsw_vlan_remove err %d\n", err);
+		goto err_close;
 	}
 
 	ethsw->workqueue = alloc_ordered_workqueue("%s_%d_ordered",
@@ -1449,34 +1490,22 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 
 static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port)
 {
+	struct switchdev_obj_port_vlan vlan = {
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
+		.vid = DEFAULT_VLAN_ID,
+		.flags = BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID,
+	};
 	struct net_device *netdev = port_priv->netdev;
-	struct ethsw_core *ethsw = port_priv->ethsw_data;
-	struct dpsw_vlan_if_cfg vcfg;
 	int err;
 
-	/* Switch starts with all ports configured to VLAN 1. Need to
-	 * remove this setting to allow configuration at bridge join
+	/* We need to add VLAN 1 as the PVID on this port until it is under a
+	 * bridge since the DPAA2 switch is not able to handle the traffic in a
+	 * VLAN unaware fashion
 	 */
-	vcfg.num_ifs = 1;
-	vcfg.if_id[0] = port_priv->idx;
-
-	err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle,
-					   DEFAULT_VLAN_ID, &vcfg);
-	if (err) {
-		netdev_err(netdev, "dpsw_vlan_remove_if_untagged err %d\n",
-			   err);
-		return err;
-	}
-
-	err = dpaa2_switch_port_set_pvid(port_priv, 0);
+	err = dpaa2_switch_port_vlans_add(netdev, &vlan);
 	if (err)
 		return err;
 
-	err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
-				  DEFAULT_VLAN_ID, &vcfg);
-	if (err)
-		netdev_err(netdev, "dpsw_vlan_remove_if err %d\n", err);
-
 	return err;
 }
 
@@ -1633,9 +1662,6 @@ static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
 	if (err)
 		goto err_free_cmdport;
 
-	/* DEFAULT_VLAN_ID is implicitly configured on the switch */
-	ethsw->vlans[DEFAULT_VLAN_ID] = ETHSW_VLAN_MEMBER;
-
 	ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports),
 			       GFP_KERNEL);
 	if (!(ethsw->ports)) {
@@ -1655,10 +1681,6 @@ static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
 		goto err_free_ports;
 	}
 
-	/* Make sure the switch ports are disabled at probe time */
-	for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
-		dpsw_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle, i);
-
 	/* Setup IRQs */
 	err = dpaa2_switch_setup_irqs(sw_dev);
 	if (err)
-- 
2.30.0

[PATCH net-next 03/15] staging: dpaa2-switch: remove obsolete .ndo_fdb_{add|del} callbacks

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Since the dpaa2-switch already listens for SWITCHDEV_FDB_ADD_TO_DEVICE /
SWITCHDEV_FDB_DEL_TO_DEVICE events emitted by the bridge, we don't need
the bridge bypass operations, and now is a good time to delete them. All
'bridge fdb' commands need the 'master' flag specified now.

In fact, having the obsolete .ndo_fdb_{add|del} callbacks would even
complicate the bridge leave/join procedures without any real benefit.
Every FDB entry is installed in an FDB ID as far as the hardware is
concerned, and the dpaa2-switch ports change their FDB ID when they join
or leave a bridge. So we would need to manually delete these FDB entries
when the FDB ID changes. That's because, unlike FDB entries added
through switchdev, where the bridge automatically deletes those on
leave, there isn't anybody who will remove the static FDB entries
installed via the bridge bypass operations upon a change in the upper
device.

Note that we still need .ndo_fdb_dump though. The dpaa2-switch does not
emit any interrupts when a new address is learnt, so we cannot keep the
bridge FDB in sync with the hardware FDB. Therefore, we need this
callback to get a chance to print the FDB entries that were dynamically
learnt by our hardware.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 27 -------------------------
 1 file changed, 27 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index fa0ec54b49fa..3067289a15a1 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -295,31 +295,6 @@ static int dpaa2_switch_port_fdb_del_mc(struct ethsw_port_priv *port_priv,
 	return err;
 }
 
-static int dpaa2_switch_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
-				     struct net_device *dev, const unsigned char *addr,
-				     u16 vid, u16 flags,
-				     struct netlink_ext_ack *extack)
-{
-	if (is_unicast_ether_addr(addr))
-		return dpaa2_switch_port_fdb_add_uc(netdev_priv(dev),
-						    addr);
-	else
-		return dpaa2_switch_port_fdb_add_mc(netdev_priv(dev),
-						    addr);
-}
-
-static int dpaa2_switch_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
-				     struct net_device *dev,
-				     const unsigned char *addr, u16 vid)
-{
-	if (is_unicast_ether_addr(addr))
-		return dpaa2_switch_port_fdb_del_uc(netdev_priv(dev),
-						    addr);
-	else
-		return dpaa2_switch_port_fdb_del_mc(netdev_priv(dev),
-						    addr);
-}
-
 static void dpaa2_switch_port_get_stats(struct net_device *netdev,
 					struct rtnl_link_stats64 *stats)
 {
@@ -726,8 +701,6 @@ static const struct net_device_ops dpaa2_switch_port_ops = {
 	.ndo_change_mtu		= dpaa2_switch_port_change_mtu,
 	.ndo_has_offload_stats	= dpaa2_switch_port_has_offload_stats,
 	.ndo_get_offload_stats	= dpaa2_switch_port_get_offload_stats,
-	.ndo_fdb_add		= dpaa2_switch_port_fdb_add,
-	.ndo_fdb_del		= dpaa2_switch_port_fdb_del,
 	.ndo_fdb_dump		= dpaa2_switch_port_fdb_dump,
 
 	.ndo_start_xmit		= dpaa2_switch_port_dropframe,
-- 
2.30.0

[PATCH net-next 04/15] staging: dpaa2-switch: get control interface attributes

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Introduce a new structure to hold all necessary info related to an RX
queue for the control interface and populate the FQ IDs.
We only have one Rx queue and one Tx confirmation queue on the control
interface, both shared by all the switch ports.

Also, increase the minimum version of the object supported by the driver
since for a basic switch driver support we'll be in need for some ABIs
added in the latest version of firmware.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h | 13 ++++-
 drivers/staging/fsl-dpaa2/ethsw/dpsw.c     | 33 ++++++++++++-
 drivers/staging/fsl-dpaa2/ethsw/dpsw.h     | 23 ++++++++-
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c    | 56 +++++++++++++++++++---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h    | 22 ++++++++-
 5 files changed, 136 insertions(+), 11 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
index 2a921ed9594d..fc1ba45f8a3f 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright 2014-2016 Freescale Semiconductor Inc.
- * Copyright 2017-2020 NXP
+ * Copyright 2017-2021 NXP
  *
  */
 
@@ -10,7 +10,7 @@
 
 /* DPSW Version */
 #define DPSW_VER_MAJOR		8
-#define DPSW_VER_MINOR		5
+#define DPSW_VER_MINOR		9
 
 #define DPSW_CMD_BASE_VERSION	1
 #define DPSW_CMD_VERSION_2	2
@@ -72,6 +72,8 @@
 #define DPSW_CMDID_IF_GET_PRIMARY_MAC_ADDR  DPSW_CMD_ID(0x0A8)
 #define DPSW_CMDID_IF_SET_PRIMARY_MAC_ADDR  DPSW_CMD_ID(0x0A9)
 
+#define DPSW_CMDID_CTRL_IF_GET_ATTR         DPSW_CMD_ID(0x0A0)
+
 /* Macros for accessing command fields smaller than 1byte */
 #define DPSW_MASK(field)        \
 	GENMASK(DPSW_##field##_SHIFT + DPSW_##field##_SIZE - 1, \
@@ -347,6 +349,13 @@ struct dpsw_rsp_fdb_dump {
 	__le16 num_entries;
 };
 
+struct dpsw_rsp_ctrl_if_get_attr {
+	__le64 pad;
+	__le32 rx_fqid;
+	__le32 rx_err_fqid;
+	__le32 tx_err_conf_fqid;
+};
+
 struct dpsw_rsp_get_api_version {
 	__le16 version_major;
 	__le16 version_minor;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
index f7013d71dc84..a7794f012e78 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2014-2016 Freescale Semiconductor Inc.
- * Copyright 2017-2018 NXP
+ * Copyright 2017-2021 NXP
  *
  */
 
@@ -1089,6 +1089,37 @@ int dpsw_fdb_remove_multicast(struct fsl_mc_io *mc_io,
 	return mc_send_command(mc_io, &cmd);
 }
 
+/**
+ * dpsw_ctrl_if_get_attributes() - Obtain control interface attributes
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPSW object
+ * @attr:	Returned control interface attributes
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpsw_ctrl_if_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags,
+				u16 token, struct dpsw_ctrl_if_attr *attr)
+{
+	struct dpsw_rsp_ctrl_if_get_attr *rsp_params;
+	struct fsl_mc_command cmd = { 0 };
+	int err;
+
+	cmd.header = mc_encode_cmd_header(DPSW_CMDID_CTRL_IF_GET_ATTR,
+					  cmd_flags, token);
+
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	rsp_params = (struct dpsw_rsp_ctrl_if_get_attr *)cmd.params;
+	attr->rx_fqid = le32_to_cpu(rsp_params->rx_fqid);
+	attr->rx_err_fqid = le32_to_cpu(rsp_params->rx_err_fqid);
+	attr->tx_err_conf_fqid = le32_to_cpu(rsp_params->tx_err_conf_fqid);
+
+	return 0;
+}
+
 /**
  * dpsw_get_api_version() - Get Data Path Switch API version
  * @mc_io:	Pointer to MC portal's I/O object
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
index bc6bcfb6893d..8c8cc9600e8d 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright 2014-2016 Freescale Semiconductor Inc.
- * Copyright 2017-2018 NXP
+ * Copyright 2017-2021 NXP
  *
  */
 
@@ -175,6 +175,27 @@ int dpsw_get_attributes(struct fsl_mc_io *mc_io,
 			u16 token,
 			struct dpsw_attr *attr);
 
+/**
+ * struct dpsw_ctrl_if_attr - Control interface attributes
+ * @rx_fqid:		Receive FQID
+ * @rx_err_fqid:	Receive error FQID
+ * @tx_err_conf_fqid:	Transmit error and confirmation FQID
+ */
+struct dpsw_ctrl_if_attr {
+	u32 rx_fqid;
+	u32 rx_err_fqid;
+	u32 tx_err_conf_fqid;
+};
+
+int dpsw_ctrl_if_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags,
+				u16 token, struct dpsw_ctrl_if_attr *attr);
+
+enum dpsw_queue_type {
+	DPSW_QUEUE_RX,
+	DPSW_QUEUE_TX_ERR_CONF,
+	DPSW_QUEUE_RX_ERR,
+};
+
 /**
  * enum dpsw_action - Action selection for special/control frames
  * @DPSW_ACTION_DROP: Drop frame
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 3067289a15a1..b03211fb6fc9 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -20,7 +20,7 @@
 
 /* Minimal supported DPSW version */
 #define DPSW_MIN_VER_MAJOR		8
-#define DPSW_MIN_VER_MINOR		1
+#define DPSW_MIN_VER_MINOR		9
 
 #define DEFAULT_VLAN_ID			1
 
@@ -1334,6 +1334,43 @@ static void dpaa2_switch_detect_features(struct ethsw_core *ethsw)
 		ethsw->features |= ETHSW_FEATURE_MAC_ADDR;
 }
 
+static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw)
+{
+	struct dpsw_ctrl_if_attr ctrl_if_attr;
+	struct device *dev = ethsw->dev;
+	int i = 0;
+	int err;
+
+	err = dpsw_ctrl_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
+					  &ctrl_if_attr);
+	if (err) {
+		dev_err(dev, "dpsw_ctrl_if_get_attributes() = %d\n", err);
+		return err;
+	}
+
+	ethsw->fq[i].fqid = ctrl_if_attr.rx_fqid;
+	ethsw->fq[i].ethsw = ethsw;
+	ethsw->fq[i++].type = DPSW_QUEUE_RX;
+
+	ethsw->fq[i].fqid = ctrl_if_attr.tx_err_conf_fqid;
+	ethsw->fq[i].ethsw = ethsw;
+	ethsw->fq[i++].type = DPSW_QUEUE_TX_ERR_CONF;
+
+	return 0;
+}
+
+static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
+{
+	int err;
+
+	/* setup FQs for Rx and Tx Conf */
+	err = dpaa2_switch_setup_fqs(ethsw);
+	if (err)
+		return err;
+
+	return 0;
+}
+
 static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 {
 	struct device *dev = &sw_dev->dev;
@@ -1371,11 +1408,14 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 	if (ethsw->major < DPSW_MIN_VER_MAJOR ||
 	    (ethsw->major == DPSW_MIN_VER_MAJOR &&
 	     ethsw->minor < DPSW_MIN_VER_MINOR)) {
-		dev_err(dev, "DPSW version %d:%d not supported. Use %d.%d or greater.\n",
-			ethsw->major,
-			ethsw->minor,
-			DPSW_MIN_VER_MAJOR, DPSW_MIN_VER_MINOR);
-		err = -ENOTSUPP;
+		dev_err(dev, "DPSW version %d:%d not supported. Use firmware 10.28.0 or greater.\n",
+			ethsw->major, ethsw->minor);
+		err = -EOPNOTSUPP;
+		goto err_close;
+	}
+
+	if (!dpaa2_switch_supports_cpu_traffic(ethsw)) {
+		err = -EOPNOTSUPP;
 		goto err_close;
 	}
 
@@ -1447,6 +1487,10 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 		goto err_close;
 	}
 
+	err = dpaa2_switch_ctrl_if_setup(ethsw);
+	if (err)
+		goto err_destroy_ordered_workqueue;
+
 	err = dpaa2_switch_register_notifier(dev);
 	if (err)
 		goto err_destroy_ordered_workqueue;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index 448f60755eea..24a203c42f5f 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -3,7 +3,7 @@
  * DPAA2 Ethernet Switch declarations
  *
  * Copyright 2014-2016 Freescale Semiconductor Inc.
- * Copyright 2017-2018 NXP
+ * Copyright 2017-2021 NXP
  *
  */
 
@@ -39,10 +39,19 @@
 
 #define ETHSW_FEATURE_MAC_ADDR	BIT(0)
 
+/* Number of receive queues (one RX and one TX_CONF) */
+#define DPAA2_SWITCH_RX_NUM_FQS	2
+
 extern const struct ethtool_ops dpaa2_switch_port_ethtool_ops;
 
 struct ethsw_core;
 
+struct dpaa2_switch_fq {
+	struct ethsw_core *ethsw;
+	enum dpsw_queue_type type;
+	u32 fqid;
+};
+
 /* Per port private data */
 struct ethsw_port_priv {
 	struct net_device	*netdev;
@@ -74,6 +83,17 @@ struct ethsw_core {
 	struct notifier_block		port_switchdev_nb;
 	struct notifier_block		port_switchdevb_nb;
 	struct workqueue_struct		*workqueue;
+
+	struct dpaa2_switch_fq		fq[DPAA2_SWITCH_RX_NUM_FQS];
 };
 
+static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw)
+{
+	if (ethsw->sw_attr.options & DPSW_OPT_CTRL_IF_DIS) {
+		dev_err(ethsw->dev, "Control Interface is disabled, cannot probe\n");
+		return false;
+	}
+
+	return true;
+}
 #endif	/* __ETHSW_H */
-- 
2.30.0

[PATCH net-next 05/15] staging: dpaa2-switch: setup buffer pool and RX path rings

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Allocate and setup a buffer pool, needed on the Rx path of the control
interface. Also, define the Rx buffer size seen by the WRIOP from the
PAGE_SIZE buffers seeded.

Also, create the needed Rx rings for both frame queues used on the
control interface.  On the Rx path, when a pull-dequeue operation is
performed on a software portal, available frame descriptors are put in a
ring - a DMA memory storage - for further usage.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h |  12 ++
 drivers/staging/fsl-dpaa2/ethsw/dpsw.c     |  31 +++++
 drivers/staging/fsl-dpaa2/ethsw/dpsw.h     |  26 +++++
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c    | 126 +++++++++++++++++++++
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h    |  14 +++
 5 files changed, 209 insertions(+)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
index fc1ba45f8a3f..d76f80d1bd8b 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
@@ -8,6 +8,8 @@
 #ifndef __FSL_DPSW_CMD_H
 #define __FSL_DPSW_CMD_H
 
+#include "dpsw.h"
+
 /* DPSW Version */
 #define DPSW_VER_MAJOR		8
 #define DPSW_VER_MINOR		9
@@ -73,6 +75,7 @@
 #define DPSW_CMDID_IF_SET_PRIMARY_MAC_ADDR  DPSW_CMD_ID(0x0A9)
 
 #define DPSW_CMDID_CTRL_IF_GET_ATTR         DPSW_CMD_ID(0x0A0)
+#define DPSW_CMDID_CTRL_IF_SET_POOLS        DPSW_CMD_ID(0x0A1)
 
 /* Macros for accessing command fields smaller than 1byte */
 #define DPSW_MASK(field)        \
@@ -356,6 +359,15 @@ struct dpsw_rsp_ctrl_if_get_attr {
 	__le32 tx_err_conf_fqid;
 };
 
+#define DPSW_BACKUP_POOL(val, order)	(((val) & 0x1) << (order))
+struct dpsw_cmd_ctrl_if_set_pools {
+	u8 num_dpbp;
+	u8 backup_pool_mask;
+	__le16 pad;
+	__le32 dpbp_id[DPSW_MAX_DPBP];
+	__le16 buffer_size[DPSW_MAX_DPBP];
+};
+
 struct dpsw_rsp_get_api_version {
 	__le16 version_major;
 	__le16 version_minor;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
index a7794f012e78..a560270b2466 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
@@ -1120,6 +1120,37 @@ int dpsw_ctrl_if_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags,
 	return 0;
 }
 
+/**
+ * dpsw_ctrl_if_set_pools() - Set control interface buffer pools
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPSW object
+ * @cfg:	Buffer pools configuration
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpsw_ctrl_if_set_pools(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+			   const struct dpsw_ctrl_if_pools_cfg *cfg)
+{
+	struct dpsw_cmd_ctrl_if_set_pools *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+	int i;
+
+	cmd.header = mc_encode_cmd_header(DPSW_CMDID_CTRL_IF_SET_POOLS,
+					  cmd_flags, token);
+	cmd_params = (struct dpsw_cmd_ctrl_if_set_pools *)cmd.params;
+	cmd_params->num_dpbp = cfg->num_dpbp;
+	for (i = 0; i < DPSW_MAX_DPBP; i++) {
+		cmd_params->dpbp_id[i] = cpu_to_le32(cfg->pools[i].dpbp_id);
+		cmd_params->buffer_size[i] =
+			cpu_to_le16(cfg->pools[i].buffer_size);
+		cmd_params->backup_pool_mask |=
+			DPSW_BACKUP_POOL(cfg->pools[i].backup_pool, i);
+	}
+
+	return mc_send_command(mc_io, &cmd);
+}
+
 /**
  * dpsw_get_api_version() - Get Data Path Switch API version
  * @mc_io:	Pointer to MC portal's I/O object
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
index 8c8cc9600e8d..b14ec3e10b85 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
@@ -196,6 +196,32 @@ enum dpsw_queue_type {
 	DPSW_QUEUE_RX_ERR,
 };
 
+/**
+ * Maximum number of DPBP
+ */
+#define DPSW_MAX_DPBP     8
+
+/**
+ * struct dpsw_ctrl_if_pools_cfg - Control interface buffer pools configuration
+ * @num_dpbp: Number of DPBPs
+ * @pools: Array of buffer pools parameters; The number of valid entries
+ *	must match 'num_dpbp' value
+ * @pools.dpbp_id: DPBP object ID
+ * @pools.buffer_size: Buffer size
+ * @pools.backup_pool: Backup pool
+ */
+struct dpsw_ctrl_if_pools_cfg {
+	u8 num_dpbp;
+	struct {
+		int dpbp_id;
+		u16 buffer_size;
+		int backup_pool;
+	} pools[DPSW_MAX_DPBP];
+};
+
+int dpsw_ctrl_if_set_pools(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+			   const struct dpsw_ctrl_if_pools_cfg *cfg);
+
 /**
  * enum dpsw_action - Action selection for special/control frames
  * @DPSW_ACTION_DROP: Drop frame
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index b03211fb6fc9..06998578355c 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -1359,6 +1359,110 @@ static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw)
 	return 0;
 }
 
+static int dpaa2_switch_setup_dpbp(struct ethsw_core *ethsw)
+{
+	struct dpsw_ctrl_if_pools_cfg dpsw_ctrl_if_pools_cfg = { 0 };
+	struct device *dev = ethsw->dev;
+	struct fsl_mc_device *dpbp_dev;
+	struct dpbp_attr dpbp_attrs;
+	int err;
+
+	err = fsl_mc_object_allocate(to_fsl_mc_device(dev), FSL_MC_POOL_DPBP,
+				     &dpbp_dev);
+	if (err) {
+		if (err == -ENXIO)
+			err = -EPROBE_DEFER;
+		else
+			dev_err(dev, "DPBP device allocation failed\n");
+		return err;
+	}
+	ethsw->dpbp_dev = dpbp_dev;
+
+	err = dpbp_open(ethsw->mc_io, 0, dpbp_dev->obj_desc.id,
+			&dpbp_dev->mc_handle);
+	if (err) {
+		dev_err(dev, "dpbp_open() failed\n");
+		goto err_open;
+	}
+
+	err = dpbp_reset(ethsw->mc_io, 0, dpbp_dev->mc_handle);
+	if (err) {
+		dev_err(dev, "dpbp_reset() failed\n");
+		goto err_reset;
+	}
+
+	err = dpbp_enable(ethsw->mc_io, 0, dpbp_dev->mc_handle);
+	if (err) {
+		dev_err(dev, "dpbp_enable() failed\n");
+		goto err_enable;
+	}
+
+	err = dpbp_get_attributes(ethsw->mc_io, 0, dpbp_dev->mc_handle,
+				  &dpbp_attrs);
+	if (err) {
+		dev_err(dev, "dpbp_get_attributes() failed\n");
+		goto err_get_attr;
+	}
+
+	dpsw_ctrl_if_pools_cfg.num_dpbp = 1;
+	dpsw_ctrl_if_pools_cfg.pools[0].dpbp_id = dpbp_attrs.id;
+	dpsw_ctrl_if_pools_cfg.pools[0].buffer_size = DPAA2_SWITCH_RX_BUF_SIZE;
+	dpsw_ctrl_if_pools_cfg.pools[0].backup_pool = 0;
+
+	err = dpsw_ctrl_if_set_pools(ethsw->mc_io, 0, ethsw->dpsw_handle,
+				     &dpsw_ctrl_if_pools_cfg);
+	if (err) {
+		dev_err(dev, "dpsw_ctrl_if_set_pools() failed\n");
+		goto err_get_attr;
+	}
+	ethsw->bpid = dpbp_attrs.id;
+
+	return 0;
+
+err_get_attr:
+	dpbp_disable(ethsw->mc_io, 0, dpbp_dev->mc_handle);
+err_enable:
+err_reset:
+	dpbp_close(ethsw->mc_io, 0, dpbp_dev->mc_handle);
+err_open:
+	fsl_mc_object_free(dpbp_dev);
+	return err;
+}
+
+static void dpaa2_switch_free_dpbp(struct ethsw_core *ethsw)
+{
+	dpbp_disable(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle);
+	dpbp_close(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle);
+	fsl_mc_object_free(ethsw->dpbp_dev);
+}
+
+static int dpaa2_switch_alloc_rings(struct ethsw_core *ethsw)
+{
+	int i;
+
+	for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) {
+		ethsw->fq[i].store =
+			dpaa2_io_store_create(DPAA2_SWITCH_STORE_SIZE,
+					      ethsw->dev);
+		if (!ethsw->fq[i].store) {
+			dev_err(ethsw->dev, "dpaa2_io_store_create failed\n");
+			while (--i >= 0)
+				dpaa2_io_store_destroy(ethsw->fq[i].store);
+			return -ENOMEM;
+		}
+	}
+
+	return 0;
+}
+
+static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw)
+{
+	int i;
+
+	for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
+		dpaa2_io_store_destroy(ethsw->fq[i].store);
+}
+
 static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
 {
 	int err;
@@ -1368,7 +1472,21 @@ static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
 	if (err)
 		return err;
 
+	/* setup the buffer pool needed on the Rx path */
+	err = dpaa2_switch_setup_dpbp(ethsw);
+	if (err)
+		return err;
+
+	err = dpaa2_switch_alloc_rings(ethsw);
+	if (err)
+		goto err_free_dpbp;
+
 	return 0;
+
+err_free_dpbp:
+	dpaa2_switch_free_dpbp(ethsw);
+
+	return err;
 }
 
 static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
@@ -1563,6 +1681,12 @@ static void dpaa2_switch_takedown(struct fsl_mc_device *sw_dev)
 		dev_warn(dev, "dpsw_close err %d\n", err);
 }
 
+static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw)
+{
+	dpaa2_switch_destroy_rings(ethsw);
+	dpaa2_switch_free_dpbp(ethsw);
+}
+
 static int dpaa2_switch_remove(struct fsl_mc_device *sw_dev)
 {
 	struct ethsw_port_priv *port_priv;
@@ -1573,6 +1697,8 @@ static int dpaa2_switch_remove(struct fsl_mc_device *sw_dev)
 	dev = &sw_dev->dev;
 	ethsw = dev_get_drvdata(dev);
 
+	dpaa2_switch_ctrl_if_teardown(ethsw);
+
 	dpaa2_switch_teardown_irqs(sw_dev);
 
 	dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index 24a203c42f5f..f5bd2cd3d140 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -17,6 +17,8 @@
 #include <uapi/linux/if_bridge.h>
 #include <net/switchdev.h>
 #include <linux/if_bridge.h>
+#include <linux/fsl/mc.h>
+#include <soc/fsl/dpaa2-io.h>
 
 #include "dpsw.h"
 
@@ -42,6 +44,15 @@
 /* Number of receive queues (one RX and one TX_CONF) */
 #define DPAA2_SWITCH_RX_NUM_FQS	2
 
+/* Hardware requires alignment for ingress/egress buffer addresses */
+#define DPAA2_SWITCH_RX_BUF_RAW_SIZE	PAGE_SIZE
+#define DPAA2_SWITCH_RX_BUF_TAILROOM \
+	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
+#define DPAA2_SWITCH_RX_BUF_SIZE \
+	(DPAA2_SWITCH_RX_BUF_RAW_SIZE - DPAA2_SWITCH_RX_BUF_TAILROOM)
+
+#define DPAA2_SWITCH_STORE_SIZE 16
+
 extern const struct ethtool_ops dpaa2_switch_port_ethtool_ops;
 
 struct ethsw_core;
@@ -49,6 +60,7 @@ struct ethsw_core;
 struct dpaa2_switch_fq {
 	struct ethsw_core *ethsw;
 	enum dpsw_queue_type type;
+	struct dpaa2_io_store *store;
 	u32 fqid;
 };
 
@@ -85,6 +97,8 @@ struct ethsw_core {
 	struct workqueue_struct		*workqueue;
 
 	struct dpaa2_switch_fq		fq[DPAA2_SWITCH_RX_NUM_FQS];
+	struct fsl_mc_device		*dpbp_dev;
+	u16				bpid;
 };
 
 static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw)
-- 
2.30.0

[PATCH net-next 06/15] staging: dpaa2-switch: setup dpio

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Setup interrupts on the control interface queues. We do not force an
exact affinity between the interrupts received from a specific queue and
a cpu.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h | 15 +++++
 drivers/staging/fsl-dpaa2/ethsw/dpsw.c     | 33 +++++++++++
 drivers/staging/fsl-dpaa2/ethsw/dpsw.h     | 23 ++++++++
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c    | 65 ++++++++++++++++++++++
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h    |  1 +
 5 files changed, 137 insertions(+)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
index d76f80d1bd8b..d451e1e7f0a3 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
@@ -76,6 +76,7 @@
 
 #define DPSW_CMDID_CTRL_IF_GET_ATTR         DPSW_CMD_ID(0x0A0)
 #define DPSW_CMDID_CTRL_IF_SET_POOLS        DPSW_CMD_ID(0x0A1)
+#define DPSW_CMDID_CTRL_IF_SET_QUEUE        DPSW_CMD_ID(0x0A6)
 
 /* Macros for accessing command fields smaller than 1byte */
 #define DPSW_MASK(field)        \
@@ -368,6 +369,20 @@ struct dpsw_cmd_ctrl_if_set_pools {
 	__le16 buffer_size[DPSW_MAX_DPBP];
 };
 
+#define DPSW_DEST_TYPE_SHIFT	0
+#define DPSW_DEST_TYPE_SIZE	4
+
+struct dpsw_cmd_ctrl_if_set_queue {
+	__le32 dest_id;
+	u8 dest_priority;
+	u8 pad;
+	/* from LSB: dest_type:4 */
+	u8 dest_type;
+	u8 qtype;
+	__le64 user_ctx;
+	__le32 options;
+};
+
 struct dpsw_rsp_get_api_version {
 	__le16 version_major;
 	__le16 version_minor;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
index a560270b2466..4bc5791c0fa1 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
@@ -1151,6 +1151,39 @@ int dpsw_ctrl_if_set_pools(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 	return mc_send_command(mc_io, &cmd);
 }
 
+/**
+ * dpsw_ctrl_if_set_queue() - Set Rx queue configuration
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of dpsw object
+ * @qtype:	dpsw_queue_type of the targeted queue
+ * @cfg:	Rx queue configuration
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpsw_ctrl_if_set_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+			   enum dpsw_queue_type qtype,
+			   const struct dpsw_ctrl_if_queue_cfg *cfg)
+{
+	struct dpsw_cmd_ctrl_if_set_queue *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+
+	cmd.header = mc_encode_cmd_header(DPSW_CMDID_CTRL_IF_SET_QUEUE,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dpsw_cmd_ctrl_if_set_queue *)cmd.params;
+	cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id);
+	cmd_params->dest_priority = cfg->dest_cfg.priority;
+	cmd_params->qtype = qtype;
+	cmd_params->user_ctx = cpu_to_le64(cfg->user_ctx);
+	cmd_params->options = cpu_to_le32(cfg->options);
+	dpsw_set_field(cmd_params->dest_type,
+		       DEST_TYPE,
+		       cfg->dest_cfg.dest_type);
+
+	return mc_send_command(mc_io, &cmd);
+}
+
 /**
  * dpsw_get_api_version() - Get Data Path Switch API version
  * @mc_io:	Pointer to MC portal's I/O object
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
index b14ec3e10b85..f888778b70a1 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
@@ -222,6 +222,29 @@ struct dpsw_ctrl_if_pools_cfg {
 int dpsw_ctrl_if_set_pools(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 			   const struct dpsw_ctrl_if_pools_cfg *cfg);
 
+#define DPSW_CTRL_IF_QUEUE_OPT_USER_CTX		0x00000001
+#define DPSW_CTRL_IF_QUEUE_OPT_DEST		0x00000002
+
+enum dpsw_ctrl_if_dest {
+	DPSW_CTRL_IF_DEST_NONE = 0,
+	DPSW_CTRL_IF_DEST_DPIO = 1,
+};
+
+struct dpsw_ctrl_if_dest_cfg {
+	enum dpsw_ctrl_if_dest dest_type;
+	int dest_id;
+	u8 priority;
+};
+
+struct dpsw_ctrl_if_queue_cfg {
+	u32 options;
+	u64 user_ctx;
+	struct dpsw_ctrl_if_dest_cfg dest_cfg;
+};
+
+int dpsw_ctrl_if_set_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+			   enum dpsw_queue_type qtype,
+			   const struct dpsw_ctrl_if_queue_cfg *cfg);
 /**
  * enum dpsw_action - Action selection for special/control frames
  * @DPSW_ACTION_DROP: Drop frame
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 06998578355c..5e2d441cbc38 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -1463,6 +1463,64 @@ static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw)
 		dpaa2_io_store_destroy(ethsw->fq[i].store);
 }
 
+static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw)
+{
+	struct dpsw_ctrl_if_queue_cfg queue_cfg;
+	struct dpaa2_io_notification_ctx *nctx;
+	int err, i, j;
+
+	for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) {
+		nctx = &ethsw->fq[i].nctx;
+
+		/* Register a new software context for the FQID.
+		 * By using NULL as the first parameter, we specify that we do
+		 * not care on which cpu are interrupts received for this queue
+		 */
+		nctx->is_cdan = 0;
+		nctx->id = ethsw->fq[i].fqid;
+		nctx->desired_cpu = DPAA2_IO_ANY_CPU;
+		err = dpaa2_io_service_register(NULL, nctx, ethsw->dev);
+		if (err) {
+			err = -EPROBE_DEFER;
+			goto err_register;
+		}
+
+		queue_cfg.options = DPSW_CTRL_IF_QUEUE_OPT_DEST |
+				    DPSW_CTRL_IF_QUEUE_OPT_USER_CTX;
+		queue_cfg.dest_cfg.dest_type = DPSW_CTRL_IF_DEST_DPIO;
+		queue_cfg.dest_cfg.dest_id = nctx->dpio_id;
+		queue_cfg.dest_cfg.priority = 0;
+		queue_cfg.user_ctx = nctx->qman64;
+
+		err = dpsw_ctrl_if_set_queue(ethsw->mc_io, 0,
+					     ethsw->dpsw_handle,
+					     ethsw->fq[i].type,
+					     &queue_cfg);
+		if (err)
+			goto err_set_queue;
+	}
+
+	return 0;
+
+err_set_queue:
+	dpaa2_io_service_deregister(NULL, nctx, ethsw->dev);
+err_register:
+	for (j = 0; j < i; j++)
+		dpaa2_io_service_deregister(NULL, &ethsw->fq[j].nctx,
+					    ethsw->dev);
+
+	return err;
+}
+
+static void dpaa2_switch_free_dpio(struct ethsw_core *ethsw)
+{
+	int i;
+
+	for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
+		dpaa2_io_service_deregister(NULL, &ethsw->fq[i].nctx,
+					    ethsw->dev);
+}
+
 static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
 {
 	int err;
@@ -1481,8 +1539,14 @@ static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
 	if (err)
 		goto err_free_dpbp;
 
+	err = dpaa2_switch_setup_dpio(ethsw);
+	if (err)
+		goto err_destroy_rings;
+
 	return 0;
 
+err_destroy_rings:
+	dpaa2_switch_destroy_rings(ethsw);
 err_free_dpbp:
 	dpaa2_switch_free_dpbp(ethsw);
 
@@ -1683,6 +1747,7 @@ static void dpaa2_switch_takedown(struct fsl_mc_device *sw_dev)
 
 static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw)
 {
+	dpaa2_switch_free_dpio(ethsw);
 	dpaa2_switch_destroy_rings(ethsw);
 	dpaa2_switch_free_dpbp(ethsw);
 }
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index f5bd2cd3d140..50dd529e2a79 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -61,6 +61,7 @@ struct dpaa2_switch_fq {
 	struct ethsw_core *ethsw;
 	enum dpsw_queue_type type;
 	struct dpaa2_io_store *store;
+	struct dpaa2_io_notification_ctx nctx;
 	u32 fqid;
 };
 
-- 
2.30.0

[PATCH net-next 07/15] staging: dpaa2-switch: handle Rx path on control interface

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

The dpaa2-ethsw supports only one Rx queue that is shared by all switch
ports. This means that information about which port was the ingress port
for a specific frame needs to be passed in metadata. In our case, the
Flow Context (FLC) field from the frame descriptor holds this
information. Besides the interface ID of the ingress port we also
receive the virtual QDID of the port. Below is a visual description of
the 64 bits of FLC.

63           47           31           15           0
+---------------------------------------------------+
|            |            |            |            |
|  RESERVED  |    IF_ID   |  RESERVED  |  IF QDID   |
|            |            |            |            |
+---------------------------------------------------+

Because all switch ports share the same Rx and Tx conf queues, NAPI
management takes into consideration when there is at least one switch
interface open to enable the NAPI instance.

The Rx path is common, for the most part, for both Rx and Tx conf with
the mention that each of them has its own consume function of a frame
descriptor. Dequeueing from a FQ, consuming dequeued store and also the
NAPI poll function is common between both queues.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 455 +++++++++++++++++++++++-
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h |  17 +
 2 files changed, 460 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 5e2d441cbc38..54cf87a66ab0 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -13,6 +13,7 @@
 #include <linux/msi.h>
 #include <linux/kthread.h>
 #include <linux/workqueue.h>
+#include <linux/iommu.h>
 
 #include <linux/fsl/mc.h>
 
@@ -24,6 +25,16 @@
 
 #define DEFAULT_VLAN_ID			1
 
+static void *dpaa2_iova_to_virt(struct iommu_domain *domain,
+				dma_addr_t iova_addr)
+{
+	phys_addr_t phys_addr;
+
+	phys_addr = domain ? iommu_iova_to_phys(domain, iova_addr) : iova_addr;
+
+	return phys_to_virt(phys_addr);
+}
+
 static int dpaa2_switch_add_vlan(struct ethsw_core *ethsw, u16 vid)
 {
 	int err;
@@ -433,9 +444,51 @@ static int dpaa2_switch_port_carrier_state_sync(struct net_device *netdev)
 	return 0;
 }
 
+/* Manage all NAPI instances for the control interface.
+ *
+ * We only have one RX queue and one Tx Conf queue for all
+ * switch ports. Therefore, we only need to enable the NAPI instance once, the
+ * first time one of the switch ports runs .dev_open().
+ */
+
+static void dpaa2_switch_enable_ctrl_if_napi(struct ethsw_core *ethsw)
+{
+	int i;
+
+	/* Access to the ethsw->napi_users relies on the RTNL lock */
+	ASSERT_RTNL();
+
+	/* a new interface is using the NAPI instance */
+	ethsw->napi_users++;
+
+	/* if there is already a user of the instance, return */
+	if (ethsw->napi_users > 1)
+		return;
+
+	for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
+		napi_enable(&ethsw->fq[i].napi);
+}
+
+static void dpaa2_switch_disable_ctrl_if_napi(struct ethsw_core *ethsw)
+{
+	int i;
+
+	/* Access to the ethsw->napi_users relies on the RTNL lock */
+	ASSERT_RTNL();
+
+	/* If we are not the last interface using the NAPI, return */
+	ethsw->napi_users--;
+	if (ethsw->napi_users)
+		return;
+
+	for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
+		napi_disable(&ethsw->fq[i].napi);
+}
+
 static int dpaa2_switch_port_open(struct net_device *netdev)
 {
 	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
+	struct ethsw_core *ethsw = port_priv->ethsw_data;
 	int err;
 
 	/* No need to allow Tx as control interface is disabled */
@@ -464,6 +517,8 @@ static int dpaa2_switch_port_open(struct net_device *netdev)
 		goto err_carrier_sync;
 	}
 
+	dpaa2_switch_enable_ctrl_if_napi(ethsw);
+
 	return 0;
 
 err_carrier_sync:
@@ -476,6 +531,7 @@ static int dpaa2_switch_port_open(struct net_device *netdev)
 static int dpaa2_switch_port_stop(struct net_device *netdev)
 {
 	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
+	struct ethsw_core *ethsw = port_priv->ethsw_data;
 	int err;
 
 	err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0,
@@ -486,6 +542,8 @@ static int dpaa2_switch_port_stop(struct net_device *netdev)
 		return err;
 	}
 
+	dpaa2_switch_disable_ctrl_if_napi(ethsw);
+
 	return 0;
 }
 
@@ -692,6 +750,28 @@ static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv)
 	return 0;
 }
 
+static void dpaa2_switch_free_fd(const struct ethsw_core *ethsw,
+				 const struct dpaa2_fd *fd)
+{
+	struct device *dev = ethsw->dev;
+	unsigned char *buffer_start;
+	struct sk_buff **skbh, *skb;
+	dma_addr_t fd_addr;
+
+	fd_addr = dpaa2_fd_get_addr(fd);
+	skbh = dpaa2_iova_to_virt(ethsw->iommu_domain, fd_addr);
+
+	skb = *skbh;
+	buffer_start = (unsigned char *)skbh;
+
+	dma_unmap_single(dev, fd_addr,
+			 skb_tail_pointer(skb) - buffer_start,
+			 DMA_TO_DEVICE);
+
+	/* Move on with skb release */
+	dev_kfree_skb(skb);
+}
+
 static const struct net_device_ops dpaa2_switch_port_ops = {
 	.ndo_open		= dpaa2_switch_port_open,
 	.ndo_stop		= dpaa2_switch_port_stop,
@@ -1326,6 +1406,98 @@ static int dpaa2_switch_register_notifier(struct device *dev)
 	return err;
 }
 
+/* Build a linear skb based on a single-buffer frame descriptor */
+static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw,
+						     const struct dpaa2_fd *fd)
+{
+	u16 fd_offset = dpaa2_fd_get_offset(fd);
+	dma_addr_t addr = dpaa2_fd_get_addr(fd);
+	u32 fd_length = dpaa2_fd_get_len(fd);
+	struct device *dev = ethsw->dev;
+	struct sk_buff *skb = NULL;
+	void *fd_vaddr;
+
+	fd_vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, addr);
+	dma_unmap_page(dev, addr, DPAA2_SWITCH_RX_BUF_SIZE,
+		       DMA_FROM_DEVICE);
+
+	skb = build_skb(fd_vaddr, DPAA2_SWITCH_RX_BUF_SIZE +
+			SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
+	if (unlikely(!skb)) {
+		dev_err(dev, "build_skb() failed\n");
+		return NULL;
+	}
+
+	skb_reserve(skb, fd_offset);
+	skb_put(skb, fd_length);
+
+	ethsw->buf_count--;
+
+	return skb;
+}
+
+static void dpaa2_switch_rx(struct dpaa2_switch_fq *fq,
+			    const struct dpaa2_fd *fd)
+{
+	struct ethsw_core *ethsw = fq->ethsw;
+	struct ethsw_port_priv *port_priv;
+	struct net_device *netdev;
+	struct vlan_ethhdr *hdr;
+	struct sk_buff *skb;
+	u16 vlan_tci, vid;
+	int if_id, err;
+
+	/* get switch ingress interface ID */
+	if_id = upper_32_bits(dpaa2_fd_get_flc(fd)) & 0x0000FFFF;
+
+	if (if_id >= ethsw->sw_attr.num_ifs) {
+		dev_err(ethsw->dev, "Frame received from unknown interface!\n");
+		goto err_free_fd;
+	}
+	port_priv = ethsw->ports[if_id];
+	netdev = port_priv->netdev;
+
+	/* build the SKB based on the FD received */
+	if (dpaa2_fd_get_format(fd) != dpaa2_fd_single) {
+		if (net_ratelimit()) {
+			netdev_err(netdev, "Received invalid frame format\n");
+			goto err_free_fd;
+		}
+	}
+
+	skb = dpaa2_switch_build_linear_skb(ethsw, fd);
+	if (unlikely(!skb))
+		goto err_free_fd;
+
+	skb_reset_mac_header(skb);
+
+	/* Remove the VLAN header if the packet that we just received has a vid
+	 * equal to the port PVIDs. Since the dpaa2-switch can operate only in
+	 * VLAN-aware mode and no alterations are made on the packet when it's
+	 * redirected/mirrored to the control interface, we are sure that there
+	 * will always be a VLAN header present.
+	 */
+	hdr = vlan_eth_hdr(skb);
+	vid = ntohs(hdr->h_vlan_TCI) & VLAN_VID_MASK;
+	if (vid == port_priv->pvid) {
+		err = __skb_vlan_pop(skb, &vlan_tci);
+		if (err) {
+			dev_info(ethsw->dev, "__skb_vlan_pop() returned %d", err);
+			goto err_free_fd;
+		}
+	}
+
+	skb->dev = netdev;
+	skb->protocol = eth_type_trans(skb, skb->dev);
+
+	netif_receive_skb(skb);
+
+	return;
+
+err_free_fd:
+	dpaa2_switch_free_fd(ethsw, fd);
+}
+
 static void dpaa2_switch_detect_features(struct ethsw_core *ethsw)
 {
 	ethsw->features = 0;
@@ -1359,6 +1531,146 @@ static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw)
 	return 0;
 }
 
+/* Free buffers acquired from the buffer pool or which were meant to
+ * be released in the pool
+ */
+static void dpaa2_switch_free_bufs(struct ethsw_core *ethsw, u64 *buf_array, int count)
+{
+	struct device *dev = ethsw->dev;
+	void *vaddr;
+	int i;
+
+	for (i = 0; i < count; i++) {
+		vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, buf_array[i]);
+		dma_unmap_page(dev, buf_array[i], DPAA2_SWITCH_RX_BUF_SIZE,
+			       DMA_FROM_DEVICE);
+		free_pages((unsigned long)vaddr, 0);
+	}
+}
+
+/* Perform a single release command to add buffers
+ * to the specified buffer pool
+ */
+static int dpaa2_switch_add_bufs(struct ethsw_core *ethsw, u16 bpid)
+{
+	struct device *dev = ethsw->dev;
+	u64 buf_array[BUFS_PER_CMD];
+	struct page *page;
+	int retries = 0;
+	dma_addr_t addr;
+	int err;
+	int i;
+
+	for (i = 0; i < BUFS_PER_CMD; i++) {
+		/* Allocate one page for each Rx buffer. WRIOP sees
+		 * the entire page except for a tailroom reserved for
+		 * skb shared info
+		 */
+		page = dev_alloc_pages(0);
+		if (!page) {
+			dev_err(dev, "buffer allocation failed\n");
+			goto err_alloc;
+		}
+
+		addr = dma_map_page(dev, page, 0, DPAA2_SWITCH_RX_BUF_SIZE,
+				    DMA_FROM_DEVICE);
+		if (dma_mapping_error(dev, addr)) {
+			dev_err(dev, "dma_map_single() failed\n");
+			goto err_map;
+		}
+		buf_array[i] = addr;
+	}
+
+release_bufs:
+	/* In case the portal is busy, retry until successful or
+	 * max retries hit.
+	 */
+	while ((err = dpaa2_io_service_release(NULL, bpid,
+					       buf_array, i)) == -EBUSY) {
+		if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES)
+			break;
+
+		cpu_relax();
+	}
+
+	/* If release command failed, clean up and bail out. */
+	if (err) {
+		dpaa2_switch_free_bufs(ethsw, buf_array, i);
+		return 0;
+	}
+
+	return i;
+
+err_map:
+	__free_pages(page, 0);
+err_alloc:
+	/* If we managed to allocate at least some buffers,
+	 * release them to hardware
+	 */
+	if (i)
+		goto release_bufs;
+
+	return 0;
+}
+
+static int dpaa2_switch_refill_bp(struct ethsw_core *ethsw)
+{
+	int *count = &ethsw->buf_count;
+	int new_count;
+	int err = 0;
+
+	if (unlikely(*count < DPAA2_ETHSW_REFILL_THRESH)) {
+		do {
+			new_count = dpaa2_switch_add_bufs(ethsw, ethsw->bpid);
+			if (unlikely(!new_count)) {
+				/* Out of memory; abort for now, we'll
+				 * try later on
+				 */
+				break;
+			}
+			*count += new_count;
+		} while (*count < DPAA2_ETHSW_NUM_BUFS);
+
+		if (unlikely(*count < DPAA2_ETHSW_NUM_BUFS))
+			err = -ENOMEM;
+	}
+
+	return err;
+}
+
+static int dpaa2_switch_seed_bp(struct ethsw_core *ethsw)
+{
+	int *count, i;
+
+	for (i = 0; i < DPAA2_ETHSW_NUM_BUFS; i += BUFS_PER_CMD) {
+		count = &ethsw->buf_count;
+		*count += dpaa2_switch_add_bufs(ethsw, ethsw->bpid);
+
+		if (unlikely(*count < BUFS_PER_CMD))
+			return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void dpaa2_switch_drain_bp(struct ethsw_core *ethsw)
+{
+	u64 buf_array[BUFS_PER_CMD];
+	int ret;
+
+	do {
+		ret = dpaa2_io_service_acquire(NULL, ethsw->bpid,
+					       buf_array, BUFS_PER_CMD);
+		if (ret < 0) {
+			dev_err(ethsw->dev,
+				"dpaa2_io_service_acquire() = %d\n", ret);
+			return;
+		}
+		dpaa2_switch_free_bufs(ethsw, buf_array, ret);
+
+	} while (ret);
+}
+
 static int dpaa2_switch_setup_dpbp(struct ethsw_core *ethsw)
 {
 	struct dpsw_ctrl_if_pools_cfg dpsw_ctrl_if_pools_cfg = { 0 };
@@ -1463,6 +1775,103 @@ static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw)
 		dpaa2_io_store_destroy(ethsw->fq[i].store);
 }
 
+static int dpaa2_switch_pull_fq(struct dpaa2_switch_fq *fq)
+{
+	int err, retries = 0;
+
+	/* Try to pull from the FQ while the portal is busy and we didn't hit
+	 * the maximum number fo retries
+	 */
+	do {
+		err = dpaa2_io_service_pull_fq(NULL, fq->fqid, fq->store);
+		cpu_relax();
+	} while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES);
+
+	if (unlikely(err))
+		dev_err(fq->ethsw->dev, "dpaa2_io_service_pull err %d", err);
+
+	return err;
+}
+
+/* Consume all frames pull-dequeued into the store */
+static int dpaa2_switch_store_consume(struct dpaa2_switch_fq *fq)
+{
+	struct ethsw_core *ethsw = fq->ethsw;
+	int cleaned = 0, is_last;
+	struct dpaa2_dq *dq;
+	int retries = 0;
+
+	do {
+		/* Get the next available FD from the store */
+		dq = dpaa2_io_store_next(fq->store, &is_last);
+		if (unlikely(!dq)) {
+			if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) {
+				dev_err_once(ethsw->dev,
+					     "No valid dequeue response\n");
+				return -ETIMEDOUT;
+			}
+			continue;
+		}
+
+		dpaa2_switch_rx(fq, dpaa2_dq_fd(dq));
+		cleaned++;
+
+	} while (!is_last);
+
+	return cleaned;
+}
+
+/* NAPI poll routine */
+static int dpaa2_switch_poll(struct napi_struct *napi, int budget)
+{
+	int err, cleaned = 0, store_cleaned, work_done;
+	struct dpaa2_switch_fq *fq;
+	int retries = 0;
+
+	fq = container_of(napi, struct dpaa2_switch_fq, napi);
+
+	do {
+		err = dpaa2_switch_pull_fq(fq);
+		if (unlikely(err))
+			break;
+
+		/* Refill pool if appropriate */
+		dpaa2_switch_refill_bp(fq->ethsw);
+
+		store_cleaned = dpaa2_switch_store_consume(fq);
+		cleaned += store_cleaned;
+
+		if (cleaned >= budget) {
+			work_done = budget;
+			goto out;
+		}
+
+	} while (store_cleaned);
+
+	/* We didn't consume the entire budget, so finish napi and re-enable
+	 * data availability notifications
+	 */
+	napi_complete_done(napi, cleaned);
+	do {
+		err = dpaa2_io_service_rearm(NULL, &fq->nctx);
+		cpu_relax();
+	} while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES);
+
+	work_done = max(cleaned, 1);
+out:
+
+	return work_done;
+}
+
+static void dpaa2_switch_fqdan_cb(struct dpaa2_io_notification_ctx *nctx)
+{
+	struct dpaa2_switch_fq *fq;
+
+	fq = container_of(nctx, struct dpaa2_switch_fq, nctx);
+
+	napi_schedule(&fq->napi);
+}
+
 static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw)
 {
 	struct dpsw_ctrl_if_queue_cfg queue_cfg;
@@ -1479,6 +1888,7 @@ static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw)
 		nctx->is_cdan = 0;
 		nctx->id = ethsw->fq[i].fqid;
 		nctx->desired_cpu = DPAA2_IO_ANY_CPU;
+		nctx->cb = dpaa2_switch_fqdan_cb;
 		err = dpaa2_io_service_register(NULL, nctx, ethsw->dev);
 		if (err) {
 			err = -EPROBE_DEFER;
@@ -1535,10 +1945,14 @@ static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
 	if (err)
 		return err;
 
-	err = dpaa2_switch_alloc_rings(ethsw);
+	err = dpaa2_switch_seed_bp(ethsw);
 	if (err)
 		goto err_free_dpbp;
 
+	err = dpaa2_switch_alloc_rings(ethsw);
+	if (err)
+		goto err_drain_dpbp;
+
 	err = dpaa2_switch_setup_dpio(ethsw);
 	if (err)
 		goto err_destroy_rings;
@@ -1547,6 +1961,8 @@ static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
 
 err_destroy_rings:
 	dpaa2_switch_destroy_rings(ethsw);
+err_drain_dpbp:
+	dpaa2_switch_drain_bp(ethsw);
 err_free_dpbp:
 	dpaa2_switch_free_dpbp(ethsw);
 
@@ -1749,6 +2165,7 @@ static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw)
 {
 	dpaa2_switch_free_dpio(ethsw);
 	dpaa2_switch_destroy_rings(ethsw);
+	dpaa2_switch_drain_bp(ethsw);
 	dpaa2_switch_free_dpbp(ethsw);
 }
 
@@ -1825,12 +2242,6 @@ static int dpaa2_switch_probe_port(struct ethsw_core *ethsw,
 	if (err)
 		goto err_port_probe;
 
-	err = register_netdev(port_netdev);
-	if (err < 0) {
-		dev_err(dev, "register_netdev error %d\n", err);
-		goto err_port_probe;
-	}
-
 	ethsw->ports[port_idx] = port_priv;
 
 	return 0;
@@ -1854,6 +2265,7 @@ static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
 		return -ENOMEM;
 
 	ethsw->dev = dev;
+	ethsw->iommu_domain = iommu_get_domain_for_dev(dev);
 	dev_set_drvdata(dev, ethsw);
 
 	err = fsl_mc_portal_allocate(sw_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
@@ -1883,6 +2295,15 @@ static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
 			goto err_free_ports;
 	}
 
+	/* Add a NAPI instance for each of the Rx queues. The first port's
+	 * net_device will be associated with the instances since we do not have
+	 * different queues for each switch ports.
+	 */
+	for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
+		netif_napi_add(ethsw->ports[0]->netdev,
+			       &ethsw->fq[i].napi, dpaa2_switch_poll,
+			       NAPI_POLL_WEIGHT);
+
 	err = dpsw_enable(ethsw->mc_io, 0, ethsw->dpsw_handle);
 	if (err) {
 		dev_err(ethsw->dev, "dpsw_enable err %d\n", err);
@@ -1894,18 +2315,28 @@ static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
 	if (err)
 		goto err_stop;
 
-	dev_info(dev, "probed %d port switch\n", ethsw->sw_attr.num_ifs);
+	/* Register the netdev only when the entire setup is done and the
+	 * switch port interfaces are ready to receive traffic
+	 */
+	for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
+		err = register_netdev(ethsw->ports[i]->netdev);
+		if (err < 0) {
+			dev_err(dev, "register_netdev error %d\n", err);
+			goto err_unregister_ports;
+		}
+	}
+
 	return 0;
 
+err_unregister_ports:
+	for (i--; i >= 0; i--)
+		unregister_netdev(ethsw->ports[i]->netdev);
 err_stop:
 	dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
 
 err_free_ports:
-	/* Cleanup registered ports only */
-	for (i--; i >= 0; i--) {
-		unregister_netdev(ethsw->ports[i]->netdev);
+	for (i--; i >= 0; i--)
 		free_netdev(ethsw->ports[i]->netdev);
-	}
 	kfree(ethsw->ports);
 
 err_takedown:
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index 50dd529e2a79..238f16561979 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -53,6 +53,19 @@
 
 #define DPAA2_SWITCH_STORE_SIZE 16
 
+/* Buffer management */
+#define BUFS_PER_CMD			7
+#define DPAA2_ETHSW_NUM_BUFS		(1024 * BUFS_PER_CMD)
+#define DPAA2_ETHSW_REFILL_THRESH	(DPAA2_ETHSW_NUM_BUFS * 5 / 6)
+
+/* Number of times to retry DPIO portal operations while waiting
+ * for portal to finish executing current command and become
+ * available. We want to avoid being stuck in a while loop in case
+ * hardware becomes unresponsive, but not give up too easily if
+ * the portal really is busy for valid reasons
+ */
+#define DPAA2_SWITCH_SWP_BUSY_RETRIES		1000
+
 extern const struct ethtool_ops dpaa2_switch_port_ethtool_ops;
 
 struct ethsw_core;
@@ -62,6 +75,7 @@ struct dpaa2_switch_fq {
 	enum dpsw_queue_type type;
 	struct dpaa2_io_store *store;
 	struct dpaa2_io_notification_ctx nctx;
+	struct napi_struct napi;
 	u32 fqid;
 };
 
@@ -89,6 +103,7 @@ struct ethsw_core {
 	unsigned long			features;
 	int				dev_id;
 	struct ethsw_port_priv		**ports;
+	struct iommu_domain		*iommu_domain;
 
 	u8				vlans[VLAN_VID_MASK + 1];
 
@@ -99,7 +114,9 @@ struct ethsw_core {
 
 	struct dpaa2_switch_fq		fq[DPAA2_SWITCH_RX_NUM_FQS];
 	struct fsl_mc_device		*dpbp_dev;
+	int				buf_count;
 	u16				bpid;
+	int				napi_users;
 };
 
 static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw)
-- 
2.30.0

[PATCH net-next 08/15] staging: dpaa2-switch: add .ndo_start_xmit() callback

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Implement the .ndo_start_xmit() callback for the switch port interfaces.
For each of the switch ports, gather the corresponding queue
destination ID (QDID) necessary for Tx enqueueing.

We'll reserve 64 bytes for software annotations, where we keep a skb
backpointer used on the Tx confirmation side for releasing the allocated
memory. At the moment, we only support linear skbs.

Also, add support for the Tx confirmation path which for the most part
shares the code path with the normal Rx queue.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h |  24 ++++
 drivers/staging/fsl-dpaa2/ethsw/dpsw.c     |  41 ++++++
 drivers/staging/fsl-dpaa2/ethsw/dpsw.h     |  28 ++++
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c    | 154 ++++++++++++++++++---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h    |  14 ++
 5 files changed, 245 insertions(+), 16 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
index d451e1e7f0a3..4aa83d41d762 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
@@ -47,6 +47,8 @@
 #define DPSW_CMDID_IF_ENABLE                DPSW_CMD_ID(0x03D)
 #define DPSW_CMDID_IF_DISABLE               DPSW_CMD_ID(0x03E)
 
+#define DPSW_CMDID_IF_GET_ATTR              DPSW_CMD_ID(0x042)
+
 #define DPSW_CMDID_IF_SET_MAX_FRAME_LENGTH  DPSW_CMD_ID(0x044)
 
 #define DPSW_CMDID_IF_GET_LINK_STATE        DPSW_CMD_ID(0x046)
@@ -246,6 +248,28 @@ struct dpsw_cmd_if {
 	__le16 if_id;
 };
 
+#define DPSW_ADMIT_UNTAGGED_SHIFT	0
+#define DPSW_ADMIT_UNTAGGED_SIZE	4
+#define DPSW_ENABLED_SHIFT		5
+#define DPSW_ENABLED_SIZE		1
+#define DPSW_ACCEPT_ALL_VLAN_SHIFT	6
+#define DPSW_ACCEPT_ALL_VLAN_SIZE	1
+
+struct dpsw_rsp_if_get_attr {
+	/* cmd word 0 */
+	/* from LSB: admit_untagged:4 enabled:1 accept_all_vlan:1 */
+	u8 conf;
+	u8 pad1;
+	u8 num_tcs;
+	u8 pad2;
+	__le16 qdid;
+	/* cmd word 1 */
+	__le32 options;
+	__le32 pad3;
+	/* cmd word 2 */
+	__le32 rate;
+};
+
 struct dpsw_cmd_if_set_max_frame_length {
 	__le16 if_id;
 	__le16 frame_length;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
index 4bc5791c0fa1..bd482a9b1930 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
@@ -642,6 +642,47 @@ int dpsw_if_disable(struct fsl_mc_io *mc_io,
 	return mc_send_command(mc_io, &cmd);
 }
 
+/**
+ * dpsw_if_get_attributes() - Function obtains attributes of interface
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPSW object
+ * @if_id:	Interface Identifier
+ * @attr:	Returned interface attributes
+ *
+ * Return:	Completion status. '0' on Success; Error code otherwise.
+ */
+int dpsw_if_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+			   u16 if_id, struct dpsw_if_attr *attr)
+{
+	struct dpsw_rsp_if_get_attr *rsp_params;
+	struct fsl_mc_command cmd = { 0 };
+	struct dpsw_cmd_if *cmd_params;
+	int err;
+
+	cmd.header = mc_encode_cmd_header(DPSW_CMDID_IF_GET_ATTR, cmd_flags,
+					  token);
+	cmd_params = (struct dpsw_cmd_if *)cmd.params;
+	cmd_params->if_id = cpu_to_le16(if_id);
+
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	rsp_params = (struct dpsw_rsp_if_get_attr *)cmd.params;
+	attr->num_tcs = rsp_params->num_tcs;
+	attr->rate = le32_to_cpu(rsp_params->rate);
+	attr->options = le32_to_cpu(rsp_params->options);
+	attr->qdid = le16_to_cpu(rsp_params->qdid);
+	attr->enabled = dpsw_get_field(rsp_params->conf, ENABLED);
+	attr->accept_all_vlan = dpsw_get_field(rsp_params->conf,
+					       ACCEPT_ALL_VLAN);
+	attr->admit_untagged = dpsw_get_field(rsp_params->conf,
+					      ADMIT_UNTAGGED);
+
+	return 0;
+}
+
 /**
  * dpsw_if_set_max_frame_length() - Set Maximum Receive frame length.
  * @mc_io:		Pointer to MC portal's I/O object
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
index f888778b70a1..e741e91e485a 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
@@ -430,6 +430,34 @@ int dpsw_if_disable(struct fsl_mc_io *mc_io,
 		    u16 token,
 		    u16 if_id);
 
+/**
+ * struct dpsw_if_attr - Structure representing DPSW interface attributes
+ * @num_tcs: Number of traffic classes
+ * @rate: Transmit rate in bits per second
+ * @options: Interface configuration options (bitmap)
+ * @enabled: Indicates if interface is enabled
+ * @accept_all_vlan: The device discards/accepts incoming frames
+ *		for VLANs that do not include this interface
+ * @admit_untagged: When set to 'DPSW_ADMIT_ONLY_VLAN_TAGGED', the device
+ *		discards untagged frames or priority-tagged frames received on
+ *		this interface;
+ *		When set to 'DPSW_ADMIT_ALL', untagged frames or priority-
+ *		tagged frames received on this interface are accepted
+ * @qdid: control frames transmit qdid
+ */
+struct dpsw_if_attr {
+	u8 num_tcs;
+	u32 rate;
+	u32 options;
+	int enabled;
+	int accept_all_vlan;
+	enum dpsw_accepted_frames admit_untagged;
+	u16 qdid;
+};
+
+int dpsw_if_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+			   u16 if_id, struct dpsw_if_attr *attr);
+
 int dpsw_if_set_max_frame_length(struct fsl_mc_io *mc_io,
 				 u32 cmd_flags,
 				 u16 token,
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 54cf87a66ab0..102221263062 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -434,10 +434,13 @@ static int dpaa2_switch_port_carrier_state_sync(struct net_device *netdev)
 	WARN_ONCE(state.up > 1, "Garbage read into link_state");
 
 	if (state.up != port_priv->link_state) {
-		if (state.up)
+		if (state.up) {
 			netif_carrier_on(netdev);
-		else
+			netif_tx_start_all_queues(netdev);
+		} else {
 			netif_carrier_off(netdev);
+			netif_tx_stop_all_queues(netdev);
+		}
 		port_priv->link_state = state.up;
 	}
 
@@ -491,9 +494,6 @@ static int dpaa2_switch_port_open(struct net_device *netdev)
 	struct ethsw_core *ethsw = port_priv->ethsw_data;
 	int err;
 
-	/* No need to allow Tx as control interface is disabled */
-	netif_tx_stop_all_queues(netdev);
-
 	/* Explicitly set carrier off, otherwise
 	 * netif_carrier_ok() will return true and cause 'ip link show'
 	 * to report the LOWER_UP flag, even though the link
@@ -547,15 +547,6 @@ static int dpaa2_switch_port_stop(struct net_device *netdev)
 	return 0;
 }
 
-static netdev_tx_t dpaa2_switch_port_dropframe(struct sk_buff *skb,
-					       struct net_device *netdev)
-{
-	/* we don't support I/O for now, drop the frame */
-	dev_kfree_skb_any(skb);
-
-	return NETDEV_TX_OK;
-}
-
 static int dpaa2_switch_port_parent_id(struct net_device *dev,
 				       struct netdev_phys_item_id *ppid)
 {
@@ -772,6 +763,115 @@ static void dpaa2_switch_free_fd(const struct ethsw_core *ethsw,
 	dev_kfree_skb(skb);
 }
 
+static int dpaa2_switch_build_single_fd(struct ethsw_core *ethsw,
+					struct sk_buff *skb,
+					struct dpaa2_fd *fd)
+{
+	struct device *dev = ethsw->dev;
+	struct sk_buff **skbh;
+	dma_addr_t addr;
+	u8 *buff_start;
+	void *hwa;
+
+	buff_start = PTR_ALIGN(skb->data - DPAA2_SWITCH_TX_DATA_OFFSET -
+			       DPAA2_SWITCH_TX_BUF_ALIGN,
+			       DPAA2_SWITCH_TX_BUF_ALIGN);
+
+	/* Clear FAS to have consistent values for TX confirmation. It is
+	 * located in the first 8 bytes of the buffer's hardware annotation
+	 * area
+	 */
+	hwa = buff_start + DPAA2_SWITCH_SWA_SIZE;
+	memset(hwa, 0, 8);
+
+	/* Store a backpointer to the skb at the beginning of the buffer
+	 * (in the private data area) such that we can release it
+	 * on Tx confirm
+	 */
+	skbh = (struct sk_buff **)buff_start;
+	*skbh = skb;
+
+	addr = dma_map_single(dev, buff_start,
+			      skb_tail_pointer(skb) - buff_start,
+			      DMA_TO_DEVICE);
+	if (unlikely(dma_mapping_error(dev, addr)))
+		return -ENOMEM;
+
+	/* Setup the FD fields */
+	memset(fd, 0, sizeof(*fd));
+
+	dpaa2_fd_set_addr(fd, addr);
+	dpaa2_fd_set_offset(fd, (u16)(skb->data - buff_start));
+	dpaa2_fd_set_len(fd, skb->len);
+	dpaa2_fd_set_format(fd, dpaa2_fd_single);
+
+	return 0;
+}
+
+static netdev_tx_t dpaa2_switch_port_tx(struct sk_buff *skb,
+					struct net_device *net_dev)
+{
+	struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
+	struct ethsw_core *ethsw = port_priv->ethsw_data;
+	int retries = DPAA2_SWITCH_SWP_BUSY_RETRIES;
+	struct dpaa2_fd fd;
+	int err;
+
+	if (unlikely(skb_headroom(skb) < DPAA2_SWITCH_NEEDED_HEADROOM)) {
+		struct sk_buff *ns;
+
+		ns = skb_realloc_headroom(skb, DPAA2_SWITCH_NEEDED_HEADROOM);
+		if (unlikely(!ns)) {
+			net_err_ratelimited("%s: Error reallocating skb headroom\n", net_dev->name);
+			goto err_free_skb;
+		}
+		dev_consume_skb_any(skb);
+		skb = ns;
+	}
+
+	/* We'll be holding a back-reference to the skb until Tx confirmation */
+	skb = skb_unshare(skb, GFP_ATOMIC);
+	if (unlikely(!skb)) {
+		/* skb_unshare() has already freed the skb */
+		net_err_ratelimited("%s: Error copying the socket buffer\n", net_dev->name);
+		goto err_exit;
+	}
+
+	/* At this stage, we do not support non-linear skbs so just try to
+	 * linearize the skb and if that's not working, just drop the packet.
+	 */
+	err = skb_linearize(skb);
+	if (err) {
+		net_err_ratelimited("%s: skb_linearize error (%d)!\n", net_dev->name, err);
+		goto err_free_skb;
+	}
+
+	err = dpaa2_switch_build_single_fd(ethsw, skb, &fd);
+	if (unlikely(err)) {
+		net_err_ratelimited("%s: ethsw_build_*_fd() %d\n", net_dev->name, err);
+		goto err_free_skb;
+	}
+
+	do {
+		err = dpaa2_io_service_enqueue_qd(NULL,
+						  port_priv->tx_qdid,
+						  8, 0, &fd);
+		retries--;
+	} while (err == -EBUSY && retries);
+
+	if (unlikely(err < 0)) {
+		dpaa2_switch_free_fd(ethsw, &fd);
+		goto err_exit;
+	}
+
+	return NETDEV_TX_OK;
+
+err_free_skb:
+	dev_kfree_skb(skb);
+err_exit:
+	return NETDEV_TX_OK;
+}
+
 static const struct net_device_ops dpaa2_switch_port_ops = {
 	.ndo_open		= dpaa2_switch_port_open,
 	.ndo_stop		= dpaa2_switch_port_stop,
@@ -783,7 +883,7 @@ static const struct net_device_ops dpaa2_switch_port_ops = {
 	.ndo_get_offload_stats	= dpaa2_switch_port_get_offload_stats,
 	.ndo_fdb_dump		= dpaa2_switch_port_fdb_dump,
 
-	.ndo_start_xmit		= dpaa2_switch_port_dropframe,
+	.ndo_start_xmit		= dpaa2_switch_port_tx,
 	.ndo_get_port_parent_id	= dpaa2_switch_port_parent_id,
 	.ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name,
 };
@@ -1436,6 +1536,12 @@ static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw,
 	return skb;
 }
 
+static void dpaa2_switch_tx_conf(struct dpaa2_switch_fq *fq,
+				 const struct dpaa2_fd *fd)
+{
+	dpaa2_switch_free_fd(fq->ethsw, fd);
+}
+
 static void dpaa2_switch_rx(struct dpaa2_switch_fq *fq,
 			    const struct dpaa2_fd *fd)
 {
@@ -1813,7 +1919,10 @@ static int dpaa2_switch_store_consume(struct dpaa2_switch_fq *fq)
 			continue;
 		}
 
-		dpaa2_switch_rx(fq, dpaa2_dq_fd(dq));
+		if (fq->type == DPSW_QUEUE_RX)
+			dpaa2_switch_rx(fq, dpaa2_dq_fd(dq));
+		else
+			dpaa2_switch_tx_conf(fq, dpaa2_dq_fd(dq));
 		cleaned++;
 
 	} while (!is_last);
@@ -2111,8 +2220,19 @@ static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port)
 		.flags = BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID,
 	};
 	struct net_device *netdev = port_priv->netdev;
+	struct ethsw_core *ethsw = port_priv->ethsw_data;
+	struct dpsw_if_attr dpsw_if_attr;
 	int err;
 
+	/* Get the Tx queue for this specific port */
+	err = dpsw_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
+				     port_priv->idx, &dpsw_if_attr);
+	if (err) {
+		netdev_err(netdev, "dpsw_if_get_attributes err %d\n", err);
+		return err;
+	}
+	port_priv->tx_qdid = dpsw_if_attr.qdid;
+
 	/* We need to add VLAN 1 as the PVID on this port until it is under a
 	 * bridge since the DPAA2 switch is not able to handle the traffic in a
 	 * VLAN unaware fashion
@@ -2230,6 +2350,8 @@ static int dpaa2_switch_probe_port(struct ethsw_core *ethsw,
 	port_netdev->netdev_ops = &dpaa2_switch_port_ops;
 	port_netdev->ethtool_ops = &dpaa2_switch_port_ethtool_ops;
 
+	port_netdev->needed_headroom = DPAA2_SWITCH_NEEDED_HEADROOM;
+
 	/* Set MTU limits */
 	port_netdev->min_mtu = ETH_MIN_MTU;
 	port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index 238f16561979..ab3b75a62f01 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -66,6 +66,19 @@
  */
 #define DPAA2_SWITCH_SWP_BUSY_RETRIES		1000
 
+/* Hardware annotation buffer size */
+#define DPAA2_SWITCH_HWA_SIZE			64
+/* Software annotation buffer size */
+#define DPAA2_SWITCH_SWA_SIZE			64
+
+#define DPAA2_SWITCH_TX_BUF_ALIGN		64
+
+#define DPAA2_SWITCH_TX_DATA_OFFSET \
+	(DPAA2_SWITCH_HWA_SIZE + DPAA2_SWITCH_SWA_SIZE)
+
+#define DPAA2_SWITCH_NEEDED_HEADROOM \
+	(DPAA2_SWITCH_TX_DATA_OFFSET + DPAA2_SWITCH_TX_BUF_ALIGN)
+
 extern const struct ethtool_ops dpaa2_switch_port_ethtool_ops;
 
 struct ethsw_core;
@@ -91,6 +104,7 @@ struct ethsw_port_priv {
 	u8			vlans[VLAN_VID_MASK + 1];
 	u16			pvid;
 	struct net_device	*bridge_dev;
+	u16			tx_qdid;
 };
 
 /* Switch data */
-- 
2.30.0

[PATCH net-next 09/15] staging: dpaa2-switch: enable the control interface

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Enable the CTRL_IF of the switch object, now that all the pieces are in
place (buffer and queue management, interrupts, NAPI instances etc).

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h |  2 ++
 drivers/staging/fsl-dpaa2/ethsw/dpsw.c     | 37 ++++++++++++++++++++++
 drivers/staging/fsl-dpaa2/ethsw/dpsw.h     |  5 +++
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c    |  9 ++++++
 4 files changed, 53 insertions(+)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
index 4aa83d41d762..6f1b9d16a09f 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
@@ -78,6 +78,8 @@
 
 #define DPSW_CMDID_CTRL_IF_GET_ATTR         DPSW_CMD_ID(0x0A0)
 #define DPSW_CMDID_CTRL_IF_SET_POOLS        DPSW_CMD_ID(0x0A1)
+#define DPSW_CMDID_CTRL_IF_ENABLE           DPSW_CMD_ID(0x0A2)
+#define DPSW_CMDID_CTRL_IF_DISABLE          DPSW_CMD_ID(0x0A3)
 #define DPSW_CMDID_CTRL_IF_SET_QUEUE        DPSW_CMD_ID(0x0A6)
 
 /* Macros for accessing command fields smaller than 1byte */
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
index bd482a9b1930..edc7559b7b1e 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
@@ -1363,3 +1363,40 @@ int dpsw_if_set_primary_mac_addr(struct fsl_mc_io *mc_io, u32 cmd_flags,
 	/* send command to mc*/
 	return mc_send_command(mc_io, &cmd);
 }
+
+/**
+ * dpsw_ctrl_if_enable() - Enable control interface
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPSW object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpsw_ctrl_if_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	cmd.header = mc_encode_cmd_header(DPSW_CMDID_CTRL_IF_ENABLE, cmd_flags,
+					  token);
+
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpsw_ctrl_if_disable() - Function disables control interface
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPSW object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpsw_ctrl_if_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	cmd.header = mc_encode_cmd_header(DPSW_CMDID_CTRL_IF_DISABLE,
+					  cmd_flags,
+					  token);
+
+	return mc_send_command(mc_io, &cmd);
+}
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
index e741e91e485a..954aa4401cd9 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
@@ -245,6 +245,11 @@ struct dpsw_ctrl_if_queue_cfg {
 int dpsw_ctrl_if_set_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 			   enum dpsw_queue_type qtype,
 			   const struct dpsw_ctrl_if_queue_cfg *cfg);
+
+int dpsw_ctrl_if_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token);
+
+int dpsw_ctrl_if_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token);
+
 /**
  * enum dpsw_action - Action selection for special/control frames
  * @DPSW_ACTION_DROP: Drop frame
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 102221263062..41860187cba5 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -2066,8 +2066,16 @@ static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
 	if (err)
 		goto err_destroy_rings;
 
+	err = dpsw_ctrl_if_enable(ethsw->mc_io, 0, ethsw->dpsw_handle);
+	if (err) {
+		dev_err(ethsw->dev, "dpsw_ctrl_if_enable err %d\n", err);
+		goto err_deregister_dpio;
+	}
+
 	return 0;
 
+err_deregister_dpio:
+	dpaa2_switch_free_dpio(ethsw);
 err_destroy_rings:
 	dpaa2_switch_destroy_rings(ethsw);
 err_drain_dpbp:
@@ -2283,6 +2291,7 @@ static void dpaa2_switch_takedown(struct fsl_mc_device *sw_dev)
 
 static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw)
 {
+	dpsw_ctrl_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
 	dpaa2_switch_free_dpio(ethsw);
 	dpaa2_switch_destroy_rings(ethsw);
 	dpaa2_switch_drain_bp(ethsw);
-- 
2.30.0

[PATCH net-next 10/15] staging: dpaa2-switch: properly setup switching domains

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Until now, the DPAA2 switch was not capable to properly setup its
switching domains depending on the existence, or lack thereof, of a
upper bridge device. This meant that all switch ports of a DPSW object
were switching by default even though they were not under the same
bridge device.

Another issue was the inability to actually add the CPU in the flooding
domains (broadcast, unknown unicast etc) of a particular switch port.
This meant that a simple ping on a switch interface was not possible
since no broadcast ARP frame would actually reach the CPU queues.

This patch tries to fix exactly these problems by:

* Creating and managing a FDB table for each flooding domain. This means
  that when a switch interface is not bridged it will use its own FDB
  table. While in bridged mode all DPAA2 switch interfaces under the
  same upper will use the same FDB table, thus leverage the same FDB
  entries.

* Adding a new MC firmware command - dpsw_set_egress_flood() - through
  which the driver can setup the flooding domains as needed. For
  example, when the switch interface is standalone, thus not in a
  bridge with any other DPAA2 switch port, it will setup its broadcast
  and unknown unicast flooding domains to only include the control
  interface (the queues that reach the CPU and the driver can dequeue
  from). This flooding domain changes when the interface joins a bridge
  and is configured to include, beside the control interface, all other
  DPAA2 switch interfaces.

We impose a minimum limit of FDB tables available equal to the number of
switch interfaces so that we guarantee that, in the maximal
configuration - all interfaces are standalone, each switch port will
have a private FDB table. At the same time, we only probe DPSW objects
that have the flooding and broadcast replicators configured to be per
FDB (DPSW_*_PER_FDB). Without this, the dpaa2-switch driver would not
be able to configure multiple switching domains.

At probe time, a FDB table will be allocated for each port. At a bridge
join event, the switch port will either continue to use the current FDB
table (if it's the first dpaa2-switch port to join that bridge) or will
switch to use the FDB table associated with the port that it's already
under the bridge. If a FDB switch is necessary, the private FDB table
which was previously used will be returned to the pool of unused FDBs.

Upon a bridge leave, the switch port needs a private FDB table thus it
will search and get the first unused FDB table. This way, all the other
ports remaining under the bridge will continue to use the same FDB
table.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h |  38 ++-
 drivers/staging/fsl-dpaa2/ethsw/dpsw.c     |  90 +++++-
 drivers/staging/fsl-dpaa2/ethsw/dpsw.h     |  76 ++++-
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c    | 321 +++++++++++++++++++--
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h    |  30 +-
 5 files changed, 514 insertions(+), 41 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
index 6f1b9d16a09f..eb620e832412 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
@@ -29,7 +29,7 @@
 
 #define DPSW_CMDID_ENABLE                   DPSW_CMD_ID(0x002)
 #define DPSW_CMDID_DISABLE                  DPSW_CMD_ID(0x003)
-#define DPSW_CMDID_GET_ATTR                 DPSW_CMD_ID(0x004)
+#define DPSW_CMDID_GET_ATTR                 DPSW_CMD_V2(0x004)
 #define DPSW_CMDID_RESET                    DPSW_CMD_ID(0x005)
 
 #define DPSW_CMDID_SET_IRQ_ENABLE           DPSW_CMD_ID(0x012)
@@ -58,7 +58,7 @@
 #define DPSW_CMDID_IF_SET_LINK_CFG          DPSW_CMD_ID(0x04C)
 
 #define DPSW_CMDID_VLAN_ADD                 DPSW_CMD_ID(0x060)
-#define DPSW_CMDID_VLAN_ADD_IF              DPSW_CMD_ID(0x061)
+#define DPSW_CMDID_VLAN_ADD_IF              DPSW_CMD_V2(0x061)
 #define DPSW_CMDID_VLAN_ADD_IF_UNTAGGED     DPSW_CMD_ID(0x062)
 
 #define DPSW_CMDID_VLAN_REMOVE_IF           DPSW_CMD_ID(0x064)
@@ -66,6 +66,8 @@
 #define DPSW_CMDID_VLAN_REMOVE_IF_FLOODING  DPSW_CMD_ID(0x066)
 #define DPSW_CMDID_VLAN_REMOVE              DPSW_CMD_ID(0x067)
 
+#define DPSW_CMDID_FDB_ADD                  DPSW_CMD_ID(0x082)
+#define DPSW_CMDID_FDB_REMOVE               DPSW_CMD_ID(0x083)
 #define DPSW_CMDID_FDB_ADD_UNICAST          DPSW_CMD_ID(0x084)
 #define DPSW_CMDID_FDB_REMOVE_UNICAST       DPSW_CMD_ID(0x085)
 #define DPSW_CMDID_FDB_ADD_MULTICAST        DPSW_CMD_ID(0x086)
@@ -82,6 +84,8 @@
 #define DPSW_CMDID_CTRL_IF_DISABLE          DPSW_CMD_ID(0x0A3)
 #define DPSW_CMDID_CTRL_IF_SET_QUEUE        DPSW_CMD_ID(0x0A6)
 
+#define DPSW_CMDID_SET_EGRESS_FLOOD         DPSW_CMD_ID(0x0AC)
+
 /* Macros for accessing command fields smaller than 1byte */
 #define DPSW_MASK(field)        \
 	GENMASK(DPSW_##field##_SHIFT + DPSW_##field##_SIZE - 1, \
@@ -176,6 +180,12 @@ struct dpsw_cmd_clear_irq_status {
 #define DPSW_COMPONENT_TYPE_SHIFT	0
 #define DPSW_COMPONENT_TYPE_SIZE	4
 
+#define DPSW_FLOODING_CFG_SHIFT		0
+#define DPSW_FLOODING_CFG_SIZE		4
+
+#define DPSW_BROADCAST_CFG_SHIFT	4
+#define DPSW_BROADCAST_CFG_SIZE		4
+
 struct dpsw_rsp_get_attr {
 	/* cmd word 0 */
 	__le16 num_ifs;
@@ -193,7 +203,11 @@ struct dpsw_rsp_get_attr {
 	u8 max_meters_per_if;
 	/* from LSB only the first 4 bits */
 	u8 component_type;
-	__le16 pad;
+	/* [0:3] - flooding configuration
+	 * [4:7] - broadcast configuration
+	 */
+	u8 repl_cfg;
+	u8 pad;
 	/* cmd word 3 */
 	__le64 options;
 };
@@ -312,6 +326,16 @@ struct dpsw_vlan_add {
 	__le16 vlan_id;
 };
 
+struct dpsw_cmd_vlan_add_if {
+	/* cmd word 0 */
+	__le16 options;
+	__le16 vlan_id;
+	__le16 fdb_id;
+	__le16 pad0;
+	/* cmd word 1-4 */
+	__le64 if_id;
+};
+
 struct dpsw_cmd_vlan_manage_if {
 	/* cmd word 0 */
 	__le16 pad0;
@@ -328,7 +352,7 @@ struct dpsw_cmd_vlan_remove {
 
 struct dpsw_cmd_fdb_add {
 	__le32 pad;
-	__le16 fdb_aging_time;
+	__le16 fdb_ageing_time;
 	__le16 num_fdb_entries;
 };
 
@@ -424,5 +448,11 @@ struct dpsw_cmd_if_set_mac_addr {
 	u8 mac_addr[6];
 };
 
+struct dpsw_cmd_set_egress_flood {
+	__le16 fdb_id;
+	u8 flood_type;
+	u8 pad[5];
+	__le64 if_id;
+};
 #pragma pack(pop)
 #endif /* __FSL_DPSW_CMD_H */
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
index edc7559b7b1e..5189f156100e 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
@@ -351,9 +351,9 @@ int dpsw_get_attributes(struct fsl_mc_io *mc_io,
 	attr->max_fdb_mc_groups = le16_to_cpu(rsp_params->max_fdb_mc_groups);
 	attr->max_meters_per_if = rsp_params->max_meters_per_if;
 	attr->options = le64_to_cpu(rsp_params->options);
-	attr->component_type = dpsw_get_field(rsp_params->component_type,
-					      COMPONENT_TYPE);
-
+	attr->component_type = dpsw_get_field(rsp_params->component_type, COMPONENT_TYPE);
+	attr->flooding_cfg = dpsw_get_field(rsp_params->repl_cfg, FLOODING_CFG);
+	attr->broadcast_cfg = dpsw_get_field(rsp_params->repl_cfg, BROADCAST_CFG);
 	return 0;
 }
 
@@ -924,6 +924,66 @@ int dpsw_vlan_remove(struct fsl_mc_io *mc_io,
 	return mc_send_command(mc_io, &cmd);
 }
 
+/**
+ * dpsw_fdb_add() - Add FDB to switch and Returns handle to FDB table for
+ *		the reference
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPSW object
+ * @fdb_id:	Returned Forwarding Database Identifier
+ * @cfg:	FDB Configuration
+ *
+ * Return:	Completion status. '0' on Success; Error code otherwise.
+ */
+int dpsw_fdb_add(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, u16 *fdb_id,
+		 const struct dpsw_fdb_cfg *cfg)
+{
+	struct dpsw_cmd_fdb_add *cmd_params;
+	struct dpsw_rsp_fdb_add *rsp_params;
+	struct fsl_mc_command cmd = { 0 };
+	int err;
+
+	cmd.header = mc_encode_cmd_header(DPSW_CMDID_FDB_ADD,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dpsw_cmd_fdb_add *)cmd.params;
+	cmd_params->fdb_ageing_time = cpu_to_le16(cfg->fdb_ageing_time);
+	cmd_params->num_fdb_entries = cpu_to_le16(cfg->num_fdb_entries);
+
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	rsp_params = (struct dpsw_rsp_fdb_add *)cmd.params;
+	*fdb_id = le16_to_cpu(rsp_params->fdb_id);
+
+	return 0;
+}
+
+/**
+ * dpsw_fdb_remove() - Remove FDB from switch
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPSW object
+ * @fdb_id:	Forwarding Database Identifier
+ *
+ * Return:	Completion status. '0' on Success; Error code otherwise.
+ */
+int dpsw_fdb_remove(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, u16 fdb_id)
+{
+	struct dpsw_cmd_fdb_remove *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPSW_CMDID_FDB_REMOVE,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dpsw_cmd_fdb_remove *)cmd.params;
+	cmd_params->fdb_id = cpu_to_le16(fdb_id);
+
+	return mc_send_command(mc_io, &cmd);
+}
+
 /**
  * dpsw_fdb_add_unicast() - Function adds an unicast entry into MAC lookup table
  * @mc_io:	Pointer to MC portal's I/O object
@@ -1400,3 +1460,27 @@ int dpsw_ctrl_if_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
 
 	return mc_send_command(mc_io, &cmd);
 }
+
+/**
+ * dpsw_set_egress_flood() - Set egress parameters associated with an FDB ID
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPSW object
+ * @cfg:	Egress flooding configuration
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpsw_set_egress_flood(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+			  const struct dpsw_egress_flood_cfg *cfg)
+{
+	struct dpsw_cmd_set_egress_flood *cmd_params;
+	struct fsl_mc_command cmd = { 0 };
+
+	cmd.header = mc_encode_cmd_header(DPSW_CMDID_SET_EGRESS_FLOOD, cmd_flags, token);
+	cmd_params = (struct dpsw_cmd_set_egress_flood *)cmd.params;
+	cmd_params->fdb_id = cpu_to_le16(cfg->fdb_id);
+	cmd_params->flood_type = cfg->flood_type;
+	build_if_id_bitmap(&cmd_params->if_id, cfg->if_id, cfg->num_ifs);
+
+	return mc_send_command(mc_io, &cmd);
+}
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
index 954aa4401cd9..9e04350f3277 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
@@ -75,6 +75,35 @@ enum dpsw_component_type {
 	DPSW_COMPONENT_TYPE_S_VLAN
 };
 
+/**
+ *  enum dpsw_flooding_cfg - flooding configuration requested
+ * @DPSW_FLOODING_PER_VLAN: Flooding replicators are allocated per VLAN and
+ * interfaces present in each of them can be configured using
+ * dpsw_vlan_add_if_flooding()/dpsw_vlan_remove_if_flooding().
+ * This is the default configuration.
+ *
+ * @DPSW_FLOODING_PER_FDB: Flooding replicators are allocated per FDB and
+ * interfaces present in each of them can be configured using
+ * dpsw_set_egress_flood().
+ */
+enum dpsw_flooding_cfg {
+	DPSW_FLOODING_PER_VLAN = 0,
+	DPSW_FLOODING_PER_FDB,
+};
+
+/**
+ * enum dpsw_broadcast_cfg - broadcast configuration requested
+ * @DPSW_BROADCAST_PER_OBJECT: There is only one broadcast replicator per DPSW
+ * object. This is the default configuration.
+ * @DPSW_BROADCAST_PER_FDB: Broadcast replicators are allocated per FDB and
+ * interfaces present in each of them can be configured using
+ * dpsw_set_egress_flood().
+ */
+enum dpsw_broadcast_cfg {
+	DPSW_BROADCAST_PER_OBJECT = 0,
+	DPSW_BROADCAST_PER_FDB,
+};
+
 int dpsw_enable(struct fsl_mc_io *mc_io,
 		u32 cmd_flags,
 		u16 token);
@@ -153,6 +182,8 @@ int dpsw_clear_irq_status(struct fsl_mc_io *mc_io,
  * @num_vlans: Current number of VLANs
  * @num_fdbs: Current number of FDBs
  * @component_type: Component type of this bridge
+ * @flooding_cfg: Flooding configuration (PER_VLAN - default, PER_FDB)
+ * @broadcast_cfg: Broadcast configuration (PER_OBJECT - default, PER_FDB)
  */
 struct dpsw_attr {
 	int id;
@@ -168,6 +199,8 @@ struct dpsw_attr {
 	u16 num_vlans;
 	u8 num_fdbs;
 	enum dpsw_component_type component_type;
+	enum dpsw_flooding_cfg flooding_cfg;
+	enum dpsw_broadcast_cfg broadcast_cfg;
 };
 
 int dpsw_get_attributes(struct fsl_mc_io *mc_io,
@@ -483,6 +516,8 @@ int dpsw_vlan_add(struct fsl_mc_io *mc_io,
 		  u16 vlan_id,
 		  const struct dpsw_vlan_cfg *cfg);
 
+#define DPSW_VLAN_ADD_IF_OPT_FDB_ID            0x0001
+
 /**
  * struct dpsw_vlan_if_cfg - Set of VLAN Interfaces
  * @num_ifs: The number of interfaces that are assigned to the egress
@@ -492,7 +527,9 @@ int dpsw_vlan_add(struct fsl_mc_io *mc_io,
  */
 struct dpsw_vlan_if_cfg {
 	u16 num_ifs;
+	u16 options;
 	u16 if_id[DPSW_MAX_IF];
+	u16 fdb_id;
 };
 
 int dpsw_vlan_add_if(struct fsl_mc_io *mc_io,
@@ -649,14 +686,14 @@ enum dpsw_fdb_learning_mode {
 /**
  * struct dpsw_fdb_attr - FDB Attributes
  * @max_fdb_entries: Number of FDB entries
- * @fdb_aging_time: Aging time in seconds
+ * @fdb_ageing_time: Ageing time in seconds
  * @learning_mode: Learning mode
  * @num_fdb_mc_groups: Current number of multicast groups
  * @max_fdb_mc_groups: Maximum number of multicast groups
  */
 struct dpsw_fdb_attr {
 	u16 max_fdb_entries;
-	u16 fdb_aging_time;
+	u16 fdb_ageing_time;
 	enum dpsw_fdb_learning_mode learning_mode;
 	u16 num_fdb_mc_groups;
 	u16 max_fdb_mc_groups;
@@ -676,4 +713,39 @@ int dpsw_if_get_primary_mac_addr(struct fsl_mc_io *mc_io, u32 cmd_flags,
 int dpsw_if_set_primary_mac_addr(struct fsl_mc_io *mc_io, u32 cmd_flags,
 				 u16 token, u16 if_id, u8 mac_addr[6]);
 
+/**
+ * struct dpsw_fdb_cfg  - FDB Configuration
+ * @num_fdb_entries: Number of FDB entries
+ * @fdb_ageing_time: Ageing time in seconds
+ */
+struct dpsw_fdb_cfg {
+	u16 num_fdb_entries;
+	u16 fdb_ageing_time;
+};
+
+int dpsw_fdb_add(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, u16 *fdb_id,
+		 const struct dpsw_fdb_cfg *cfg);
+
+int dpsw_fdb_remove(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, u16 fdb_id);
+
+/**
+ * enum dpsw_flood_type - Define the flood type of a DPSW object
+ * @DPSW_BROADCAST: Broadcast flooding
+ * @DPSW_FLOODING: Unknown flooding
+ */
+enum dpsw_flood_type {
+	DPSW_BROADCAST = 0,
+	DPSW_FLOODING,
+};
+
+struct dpsw_egress_flood_cfg {
+	u16 fdb_id;
+	enum dpsw_flood_type flood_type;
+	u16 num_ifs;
+	u16 if_id[DPSW_MAX_IF];
+};
+
+int dpsw_set_egress_flood(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+			  const struct dpsw_egress_flood_cfg *cfg);
+
 #endif /* __FSL_DPSW_H */
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 41860187cba5..5be07181399d 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -25,6 +25,91 @@
 
 #define DEFAULT_VLAN_ID			1
 
+static u16 dpaa2_switch_port_get_fdb_id(struct ethsw_port_priv *port_priv)
+{
+	return port_priv->fdb->fdb_id;
+}
+
+static struct dpaa2_switch_fdb *dpaa2_switch_fdb_get_unused(struct ethsw_core *ethsw)
+{
+	int i;
+
+	for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
+		if (!ethsw->fdbs[i].in_use)
+			return &ethsw->fdbs[i];
+	return NULL;
+}
+
+static u16 dpaa2_switch_port_set_fdb(struct ethsw_port_priv *port_priv,
+				     struct net_device *bridge_dev)
+{
+	struct ethsw_port_priv *other_port_priv = NULL;
+	struct dpaa2_switch_fdb *fdb;
+	struct net_device *other_dev;
+	struct list_head *iter;
+
+	/* If we leave a bridge (bridge_dev is NULL), find an unused
+	 * FDB and use that.
+	 */
+	if (!bridge_dev) {
+		fdb = dpaa2_switch_fdb_get_unused(port_priv->ethsw_data);
+
+		/* If there is no unused FDB, we must be the last port that
+		 * leaves the last bridge, all the others are standalone. We
+		 * can just keep the FDB that we already have.
+		 */
+
+		if (!fdb) {
+			port_priv->fdb->bridge_dev = NULL;
+			return 0;
+		}
+
+		port_priv->fdb = fdb;
+		port_priv->fdb->in_use = true;
+		port_priv->fdb->bridge_dev = NULL;
+		return 0;
+	}
+
+	/* The below call to netdev_for_each_lower_dev() demands the RTNL lock
+	 * being held. Assert on it so that it's easier to catch new code
+	 * paths that reach this point without the RTNL lock.
+	 */
+	ASSERT_RTNL();
+
+	/* If part of a bridge, use the FDB of the first dpaa2 switch interface
+	 * to be present in that bridge
+	 */
+	netdev_for_each_lower_dev(bridge_dev, other_dev, iter) {
+		if (!dpaa2_switch_port_dev_check(other_dev, NULL))
+			continue;
+
+		if (other_dev == port_priv->netdev)
+			continue;
+
+		other_port_priv = netdev_priv(other_dev);
+		break;
+	}
+
+	/* The current port is about to change its FDB to the one used by the
+	 * first port that joined the bridge.
+	 */
+	if (other_port_priv) {
+		/* The previous FDB is about to become unused, since the
+		 * interface is no longer standalone.
+		 */
+		port_priv->fdb->in_use = false;
+		port_priv->fdb->bridge_dev = NULL;
+
+		/* Get a reference to the new FDB */
+		port_priv->fdb = other_port_priv->fdb;
+	}
+
+	/* Keep track of the new upper bridge device */
+	port_priv->fdb->bridge_dev = bridge_dev;
+
+	return 0;
+}
+
 static void *dpaa2_iova_to_virt(struct iommu_domain *domain,
 				dma_addr_t iova_addr)
 {
@@ -35,14 +120,13 @@ static void *dpaa2_iova_to_virt(struct iommu_domain *domain,
 	return phys_to_virt(phys_addr);
 }
 
-static int dpaa2_switch_add_vlan(struct ethsw_core *ethsw, u16 vid)
+static int dpaa2_switch_add_vlan(struct ethsw_port_priv *port_priv, u16 vid)
 {
+	struct ethsw_core *ethsw = port_priv->ethsw_data;
+	struct dpsw_vlan_cfg vcfg = {0};
 	int err;
 
-	struct dpsw_vlan_cfg	vcfg = {
-		.fdb_id = 0,
-	};
-
+	vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 	err = dpsw_vlan_add(ethsw->mc_io, 0,
 			    ethsw->dpsw_handle, vid, &vcfg);
 	if (err) {
@@ -133,7 +217,7 @@ static int dpaa2_switch_port_add_vlan(struct ethsw_port_priv *port_priv,
 {
 	struct ethsw_core *ethsw = port_priv->ethsw_data;
 	struct net_device *netdev = port_priv->netdev;
-	struct dpsw_vlan_if_cfg vcfg;
+	struct dpsw_vlan_if_cfg vcfg = {0};
 	int err;
 
 	if (port_priv->vlans[vid]) {
@@ -141,8 +225,13 @@ static int dpaa2_switch_port_add_vlan(struct ethsw_port_priv *port_priv,
 		return -EEXIST;
 	}
 
+	/* If hit, this VLAN rule will lead the packet into the FDB table
+	 * specified in the vlan configuration below
+	 */
 	vcfg.num_ifs = 1;
 	vcfg.if_id[0] = port_priv->idx;
+	vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
+	vcfg.options |= DPSW_VLAN_ADD_IF_OPT_FDB_ID;
 	err = dpsw_vlan_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, vid, &vcfg);
 	if (err) {
 		netdev_err(netdev, "dpsw_vlan_add_if err %d\n", err);
@@ -229,15 +318,17 @@ static int dpaa2_switch_port_fdb_add_uc(struct ethsw_port_priv *port_priv,
 					const unsigned char *addr)
 {
 	struct dpsw_fdb_unicast_cfg entry = {0};
+	u16 fdb_id;
 	int err;
 
 	entry.if_egress = port_priv->idx;
 	entry.type = DPSW_FDB_ENTRY_STATIC;
 	ether_addr_copy(entry.mac_addr, addr);
 
+	fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 	err = dpsw_fdb_add_unicast(port_priv->ethsw_data->mc_io, 0,
 				   port_priv->ethsw_data->dpsw_handle,
-				   0, &entry);
+				   fdb_id, &entry);
 	if (err)
 		netdev_err(port_priv->netdev,
 			   "dpsw_fdb_add_unicast err %d\n", err);
@@ -248,15 +339,17 @@ static int dpaa2_switch_port_fdb_del_uc(struct ethsw_port_priv *port_priv,
 					const unsigned char *addr)
 {
 	struct dpsw_fdb_unicast_cfg entry = {0};
+	u16 fdb_id;
 	int err;
 
 	entry.if_egress = port_priv->idx;
 	entry.type = DPSW_FDB_ENTRY_STATIC;
 	ether_addr_copy(entry.mac_addr, addr);
 
+	fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 	err = dpsw_fdb_remove_unicast(port_priv->ethsw_data->mc_io, 0,
 				      port_priv->ethsw_data->dpsw_handle,
-				      0, &entry);
+				      fdb_id, &entry);
 	/* Silently discard error for calling multiple times the del command */
 	if (err && err != -ENXIO)
 		netdev_err(port_priv->netdev,
@@ -268,6 +361,7 @@ static int dpaa2_switch_port_fdb_add_mc(struct ethsw_port_priv *port_priv,
 					const unsigned char *addr)
 {
 	struct dpsw_fdb_multicast_cfg entry = {0};
+	u16 fdb_id;
 	int err;
 
 	ether_addr_copy(entry.mac_addr, addr);
@@ -275,9 +369,10 @@ static int dpaa2_switch_port_fdb_add_mc(struct ethsw_port_priv *port_priv,
 	entry.num_ifs = 1;
 	entry.if_id[0] = port_priv->idx;
 
+	fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 	err = dpsw_fdb_add_multicast(port_priv->ethsw_data->mc_io, 0,
 				     port_priv->ethsw_data->dpsw_handle,
-				     0, &entry);
+				     fdb_id, &entry);
 	/* Silently discard error for calling multiple times the add command */
 	if (err && err != -ENXIO)
 		netdev_err(port_priv->netdev, "dpsw_fdb_add_multicast err %d\n",
@@ -289,6 +384,7 @@ static int dpaa2_switch_port_fdb_del_mc(struct ethsw_port_priv *port_priv,
 					const unsigned char *addr)
 {
 	struct dpsw_fdb_multicast_cfg entry = {0};
+	u16 fdb_id;
 	int err;
 
 	ether_addr_copy(entry.mac_addr, addr);
@@ -296,9 +392,10 @@ static int dpaa2_switch_port_fdb_del_mc(struct ethsw_port_priv *port_priv,
 	entry.num_ifs = 1;
 	entry.if_id[0] = port_priv->idx;
 
+	fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 	err = dpsw_fdb_remove_multicast(port_priv->ethsw_data->mc_io, 0,
 					port_priv->ethsw_data->dpsw_handle,
-					0, &entry);
+					fdb_id, &entry);
 	/* Silently discard error for calling multiple times the del command */
 	if (err && err != -ENAVAIL)
 		netdev_err(port_priv->netdev,
@@ -652,6 +749,7 @@ static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callba
 	u32 fdb_dump_size;
 	int err = 0, i;
 	u8 *dma_mem;
+	u16 fdb_id;
 
 	fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof(fdb_entry);
 	dma_mem = kzalloc(fdb_dump_size, GFP_KERNEL);
@@ -666,7 +764,8 @@ static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callba
 		goto err_map;
 	}
 
-	err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
+	fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
+	err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, fdb_id,
 			    fdb_dump_iova, fdb_dump_size, &num_fdb_entries);
 	if (err) {
 		netdev_err(net_dev, "dpsw_fdb_dump() = %d\n", err);
@@ -888,8 +987,8 @@ static const struct net_device_ops dpaa2_switch_port_ops = {
 	.ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name,
 };
 
-static bool dpaa2_switch_port_dev_check(const struct net_device *netdev,
-					struct notifier_block *nb)
+bool dpaa2_switch_port_dev_check(const struct net_device *netdev,
+				 struct notifier_block *nb)
 {
 	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
 
@@ -1080,7 +1179,7 @@ static int dpaa2_switch_port_vlans_add(struct net_device *netdev,
 
 	if (!port_priv->ethsw_data->vlans[vlan->vid]) {
 		/* this is a new VLAN */
-		err = dpaa2_switch_add_vlan(port_priv->ethsw_data, vlan->vid);
+		err = dpaa2_switch_add_vlan(port_priv, vlan->vid);
 		if (err)
 			return err;
 
@@ -1163,7 +1262,11 @@ static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid
 		return -ENOENT;
 
 	if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) {
-		err = dpaa2_switch_port_set_pvid(port_priv, 0);
+		/* If we are deleting the PVID of a port, use VLAN 4095 instead
+		 * as we are sure that neither the bridge nor the 8021q module
+		 * will use it
+		 */
+		err = dpaa2_switch_port_set_pvid(port_priv, 4095);
 		if (err)
 			return err;
 	}
@@ -1273,7 +1376,48 @@ static int dpaa2_switch_port_attr_set_event(struct net_device *netdev,
 	return notifier_from_errno(err);
 }
 
-/* For the moment, only flood setting needs to be updated */
+static int dpaa2_switch_fdb_set_egress_flood(struct ethsw_core *ethsw, u16 fdb_id)
+{
+	struct dpsw_egress_flood_cfg flood_cfg;
+	int i = 0, j;
+	int err;
+
+	/* Add all the DPAA2 switch ports found in the same bridging domain to
+	 * the egress flooding domain
+	 */
+	for (j = 0; j < ethsw->sw_attr.num_ifs; j++)
+		if (ethsw->ports[j] && ethsw->ports[j]->fdb->fdb_id == fdb_id)
+			flood_cfg.if_id[i++] = ethsw->ports[j]->idx;
+
+	/* Add the CTRL interface to the egress flooding domain */
+	flood_cfg.if_id[i++] = ethsw->sw_attr.num_ifs;
+
+	/* Use the FDB of the first dpaa2 switch port added to the bridge */
+	flood_cfg.fdb_id = fdb_id;
+
+	/* Setup broadcast flooding domain */
+	flood_cfg.flood_type = DPSW_BROADCAST;
+	flood_cfg.num_ifs = i;
+	err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle,
+				    &flood_cfg);
+	if (err) {
+		dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n", err);
+		return err;
+	}
+
+	/* Setup unknown flooding domain */
+	flood_cfg.flood_type = DPSW_FLOODING;
+	flood_cfg.num_ifs = i;
+	err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle,
+				    &flood_cfg);
+	if (err) {
+		dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
 static int dpaa2_switch_port_bridge_join(struct net_device *netdev,
 					 struct net_device *upper_dev)
 {
@@ -1282,15 +1426,7 @@ static int dpaa2_switch_port_bridge_join(struct net_device *netdev,
 	struct ethsw_port_priv *other_port_priv;
 	struct net_device *other_dev;
 	struct list_head *iter;
-	int i, err;
-
-	for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
-		if (ethsw->ports[i]->bridge_dev &&
-		    (ethsw->ports[i]->bridge_dev != upper_dev)) {
-			netdev_err(netdev,
-				   "Only one bridge supported per DPSW object!\n");
-			return -EINVAL;
-		}
+	int err;
 
 	netdev_for_each_lower_dev(upper_dev, other_dev, iter) {
 		if (!dpaa2_switch_port_dev_check(other_dev, NULL))
@@ -1304,9 +1440,87 @@ static int dpaa2_switch_port_bridge_join(struct net_device *netdev,
 		}
 	}
 
+	/* Delete the previously manually installed VLAN 1 */
+	err = dpaa2_switch_port_del_vlan(port_priv, 1);
+	if (err)
+		return err;
+
+	dpaa2_switch_port_set_fdb(port_priv, upper_dev);
+
+	/* Setup the egress flood policy (broadcast, unknown unicast) */
+	err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
+	if (err)
+		goto err_egress_flood;
+
+	return 0;
+
+err_egress_flood:
+	dpaa2_switch_port_set_fdb(port_priv, NULL);
 	return err;
 }
 
+static int dpaa2_switch_port_clear_rxvlan(struct net_device *vdev, int vid, void *arg)
+{
+	__be16 vlan_proto = htons(ETH_P_8021Q);
+
+	if (vdev)
+		vlan_proto = vlan_dev_vlan_proto(vdev);
+
+	return dpaa2_switch_port_vlan_kill(arg, vlan_proto, vid);
+}
+
+static int dpaa2_switch_port_restore_rxvlan(struct net_device *vdev, int vid, void *arg)
+{
+	__be16 vlan_proto = htons(ETH_P_8021Q);
+
+	if (vdev)
+		vlan_proto = vlan_dev_vlan_proto(vdev);
+
+	return dpaa2_switch_port_vlan_add(arg, vlan_proto, vid);
+}
+
+static int dpaa2_switch_port_bridge_leave(struct net_device *netdev)
+{
+	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
+	struct dpaa2_switch_fdb *old_fdb = port_priv->fdb;
+	struct ethsw_core *ethsw = port_priv->ethsw_data;
+	int err;
+
+	/* Clear all RX VLANs installed through vlan_vid_add() either as VLAN
+	 * upper devices or otherwise from the FDB table that we are about to
+	 * leave
+	 */
+	err = vlan_for_each(netdev, dpaa2_switch_port_clear_rxvlan, netdev);
+	if (err)
+		netdev_err(netdev, "Unable to clear RX VLANs from old FDB table, err (%d)\n", err);
+
+	dpaa2_switch_port_set_fdb(port_priv, NULL);
+
+	/* Restore all RX VLANs into the new FDB table that we just joined */
+	err = vlan_for_each(netdev, dpaa2_switch_port_restore_rxvlan, netdev);
+	if (err)
+		netdev_err(netdev, "Unable to restore RX VLANs to the new FDB, err (%d)\n", err);
+
+	/* Setup the egress flood policy (broadcast, unknown unicast).
+	 * When the port is not under a bridge, only the CTRL interface is part
+	 * of the flooding domain besides the actual port
+	 */
+	err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
+	if (err)
+		return err;
+
+	/* Recreate the egress flood domain of the FDB that we just left */
+	err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id);
+	if (err)
+		return err;
+
+	/* Add the VLAN 1 as PVID when not under a bridge. We need this since
+	 * the dpaa2 switch interfaces are not capable to be VLAN unaware
+	 */
+	return dpaa2_switch_port_add_vlan(port_priv, DEFAULT_VLAN_ID,
+					  BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID);
+}
+
 static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
 					     unsigned long event, void *ptr)
 {
@@ -1324,6 +1538,8 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
 		if (netif_is_bridge_master(upper_dev)) {
 			if (info->linking)
 				err = dpaa2_switch_port_bridge_join(netdev, upper_dev);
+			else
+				err = dpaa2_switch_port_bridge_leave(netdev);
 		}
 	}
 
@@ -2202,6 +2418,10 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 		goto err_close;
 	}
 
+	err = dpsw_fdb_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, 0);
+	if (err)
+		goto err_destroy_ordered_workqueue;
+
 	err = dpaa2_switch_ctrl_if_setup(ethsw);
 	if (err)
 		goto err_destroy_ordered_workqueue;
@@ -2229,7 +2449,10 @@ static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port)
 	};
 	struct net_device *netdev = port_priv->netdev;
 	struct ethsw_core *ethsw = port_priv->ethsw_data;
+	struct dpsw_fdb_cfg fdb_cfg = {0};
+	struct dpaa2_switch_fdb *fdb;
 	struct dpsw_if_attr dpsw_if_attr;
+	u16 fdb_id;
 	int err;
 
 	/* Get the Tx queue for this specific port */
@@ -2241,6 +2464,22 @@ static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port)
 	}
 	port_priv->tx_qdid = dpsw_if_attr.qdid;
 
+	/* Create a FDB table for this particular switch port */
+	fdb_cfg.num_fdb_entries = ethsw->sw_attr.max_fdb_entries / ethsw->sw_attr.num_ifs;
+	err = dpsw_fdb_add(ethsw->mc_io, 0, ethsw->dpsw_handle,
+			   &fdb_id, &fdb_cfg);
+	if (err) {
+		netdev_err(netdev, "dpsw_fdb_add err %d\n", err);
+		return err;
+	}
+
+	/* Find an unused dpaa2_switch_fdb structure and use it */
+	fdb = dpaa2_switch_fdb_get_unused(ethsw);
+	fdb->fdb_id = fdb_id;
+	fdb->in_use = true;
+	fdb->bridge_dev = NULL;
+	port_priv->fdb = fdb;
+
 	/* We need to add VLAN 1 as the PVID on this port until it is under a
 	 * bridge since the DPAA2 switch is not able to handle the traffic in a
 	 * VLAN unaware fashion
@@ -2249,6 +2488,11 @@ static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port)
 	if (err)
 		return err;
 
+	/* Setup the egress flooding domains (broadcast, unknown unicast */
+	err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
+	if (err)
+		return err;
+
 	return err;
 }
 
@@ -2319,6 +2563,8 @@ static int dpaa2_switch_remove(struct fsl_mc_device *sw_dev)
 		unregister_netdev(port_priv->netdev);
 		free_netdev(port_priv->netdev);
 	}
+
+	kfree(ethsw->fdbs);
 	kfree(ethsw->ports);
 
 	dpaa2_switch_takedown(sw_dev);
@@ -2365,6 +2611,11 @@ static int dpaa2_switch_probe_port(struct ethsw_core *ethsw,
 	port_netdev->min_mtu = ETH_MIN_MTU;
 	port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH;
 
+	/* Populate the private port structure so that later calls to
+	 * dpaa2_switch_port_init() can use it.
+	 */
+	ethsw->ports[port_idx] = port_priv;
+
 	err = dpaa2_switch_port_init(port_priv, port_idx);
 	if (err)
 		goto err_port_probe;
@@ -2373,12 +2624,11 @@ static int dpaa2_switch_probe_port(struct ethsw_core *ethsw,
 	if (err)
 		goto err_port_probe;
 
-	ethsw->ports[port_idx] = port_priv;
-
 	return 0;
 
 err_port_probe:
 	free_netdev(port_netdev);
+	ethsw->ports[port_idx] = NULL;
 
 	return err;
 }
@@ -2420,10 +2670,17 @@ static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
 		goto err_takedown;
 	}
 
+	ethsw->fdbs = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->fdbs),
+			      GFP_KERNEL);
+	if (!ethsw->fdbs) {
+		err = -ENOMEM;
+		goto err_free_ports;
+	}
+
 	for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
 		err = dpaa2_switch_probe_port(ethsw, i);
 		if (err)
-			goto err_free_ports;
+			goto err_free_netdev;
 	}
 
 	/* Add a NAPI instance for each of the Rx queues. The first port's
@@ -2438,7 +2695,7 @@ static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
 	err = dpsw_enable(ethsw->mc_io, 0, ethsw->dpsw_handle);
 	if (err) {
 		dev_err(ethsw->dev, "dpsw_enable err %d\n", err);
-		goto err_free_ports;
+		goto err_free_netdev;
 	}
 
 	/* Setup IRQs */
@@ -2462,12 +2719,14 @@ static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
 err_unregister_ports:
 	for (i--; i >= 0; i--)
 		unregister_netdev(ethsw->ports[i]->netdev);
+	dpaa2_switch_teardown_irqs(sw_dev);
 err_stop:
 	dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
-
-err_free_ports:
+err_free_netdev:
 	for (i--; i >= 0; i--)
 		free_netdev(ethsw->ports[i]->netdev);
+	kfree(ethsw->fdbs);
+err_free_ports:
 	kfree(ethsw->ports);
 
 err_takedown:
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index ab3b75a62f01..d83a9f17f672 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -92,6 +92,12 @@ struct dpaa2_switch_fq {
 	u32 fqid;
 };
 
+struct dpaa2_switch_fdb {
+	struct net_device	*bridge_dev;
+	u16			fdb_id;
+	bool			in_use;
+};
+
 /* Per port private data */
 struct ethsw_port_priv {
 	struct net_device	*netdev;
@@ -103,8 +109,9 @@ struct ethsw_port_priv {
 
 	u8			vlans[VLAN_VID_MASK + 1];
 	u16			pvid;
-	struct net_device	*bridge_dev;
 	u16			tx_qdid;
+
+	struct dpaa2_switch_fdb	*fdb;
 };
 
 /* Switch data */
@@ -131,6 +138,8 @@ struct ethsw_core {
 	int				buf_count;
 	u16				bpid;
 	int				napi_users;
+
+	struct dpaa2_switch_fdb		*fdbs;
 };
 
 static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw)
@@ -140,6 +149,25 @@ static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw)
 		return false;
 	}
 
+	if (ethsw->sw_attr.flooding_cfg != DPSW_FLOODING_PER_FDB) {
+		dev_err(ethsw->dev, "Flooding domain is not per FDB, cannot probe\n");
+		return false;
+	}
+
+	if (ethsw->sw_attr.broadcast_cfg != DPSW_BROADCAST_PER_FDB) {
+		dev_err(ethsw->dev, "Broadcast domain is not per FDB, cannot probe\n");
+		return false;
+	}
+
+	if (ethsw->sw_attr.max_fdbs < ethsw->sw_attr.num_ifs) {
+		dev_err(ethsw->dev, "The number of FDBs is lower than the number of ports, cannot probe\n");
+		return false;
+	}
+
 	return true;
 }
+
+bool dpaa2_switch_port_dev_check(const struct net_device *netdev,
+				 struct notifier_block *nb);
+
 #endif	/* __ETHSW_H */
-- 
2.30.0

[PATCH net-next 11/15] staging: dpaa2-switch: move the notifier register to module_init()

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Move the notifier blocks register into the module_init() step, instead of
object probe, so that all DPSW devices probed by the dpaa2-switch driver
can use the same notifiers.

This will enable us to have a more straightforward approach in
determining if an event is intended for an object managed by this driver
or not. Previously, the dpaa2_switch_port_dev_check() function was
forced to also check the notifier block beside the net_device_ops
structure to determine if the event is for us or not.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 176 +++++++++++++-----------
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h |   6 +-
 2 files changed, 95 insertions(+), 87 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 5be07181399d..1f8976898291 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -80,7 +80,7 @@ static u16 dpaa2_switch_port_set_fdb(struct ethsw_port_priv *port_priv,
 	 * to be present in that bridge
 	 */
 	netdev_for_each_lower_dev(bridge_dev, other_dev, iter) {
-		if (!dpaa2_switch_port_dev_check(other_dev, NULL))
+		if (!dpaa2_switch_port_dev_check(other_dev))
 			continue;
 
 		if (other_dev == port_priv->netdev)
@@ -987,18 +987,9 @@ static const struct net_device_ops dpaa2_switch_port_ops = {
 	.ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name,
 };
 
-bool dpaa2_switch_port_dev_check(const struct net_device *netdev,
-				 struct notifier_block *nb)
+bool dpaa2_switch_port_dev_check(const struct net_device *netdev)
 {
-	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
-
-	if (netdev->netdev_ops == &dpaa2_switch_port_ops &&
-	    (!nb || &port_priv->ethsw_data->port_nb == nb ||
-	     &port_priv->ethsw_data->port_switchdev_nb == nb ||
-	     &port_priv->ethsw_data->port_switchdevb_nb == nb))
-		return true;
-
-	return false;
+	return netdev->netdev_ops == &dpaa2_switch_port_ops;
 }
 
 static void dpaa2_switch_links_state_update(struct ethsw_core *ethsw)
@@ -1429,7 +1420,7 @@ static int dpaa2_switch_port_bridge_join(struct net_device *netdev,
 	int err;
 
 	netdev_for_each_lower_dev(upper_dev, other_dev, iter) {
-		if (!dpaa2_switch_port_dev_check(other_dev, NULL))
+		if (!dpaa2_switch_port_dev_check(other_dev))
 			continue;
 
 		other_port_priv = netdev_priv(other_dev);
@@ -1529,7 +1520,7 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
 	struct net_device *upper_dev;
 	int err = 0;
 
-	if (!dpaa2_switch_port_dev_check(netdev, nb))
+	if (!dpaa2_switch_port_dev_check(netdev))
 		return NOTIFY_DONE;
 
 	/* Handle just upper dev link/unlink for the moment */
@@ -1606,7 +1597,7 @@ static int dpaa2_switch_port_event(struct notifier_block *nb,
 	struct switchdev_notifier_fdb_info *fdb_info = ptr;
 	struct ethsw_core *ethsw = port_priv->ethsw_data;
 
-	if (!dpaa2_switch_port_dev_check(dev, nb))
+	if (!dpaa2_switch_port_dev_check(dev))
 		return NOTIFY_DONE;
 
 	if (event == SWITCHDEV_PORT_ATTR_SET)
@@ -1673,7 +1664,7 @@ static int dpaa2_switch_port_blocking_event(struct notifier_block *nb,
 {
 	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
 
-	if (!dpaa2_switch_port_dev_check(dev, nb))
+	if (!dpaa2_switch_port_dev_check(dev))
 		return NOTIFY_DONE;
 
 	switch (event) {
@@ -1687,41 +1678,6 @@ static int dpaa2_switch_port_blocking_event(struct notifier_block *nb,
 	return NOTIFY_DONE;
 }
 
-static int dpaa2_switch_register_notifier(struct device *dev)
-{
-	struct ethsw_core *ethsw = dev_get_drvdata(dev);
-	int err;
-
-	ethsw->port_nb.notifier_call = dpaa2_switch_port_netdevice_event;
-	err = register_netdevice_notifier(&ethsw->port_nb);
-	if (err) {
-		dev_err(dev, "Failed to register netdev notifier\n");
-		return err;
-	}
-
-	ethsw->port_switchdev_nb.notifier_call = dpaa2_switch_port_event;
-	err = register_switchdev_notifier(&ethsw->port_switchdev_nb);
-	if (err) {
-		dev_err(dev, "Failed to register switchdev notifier\n");
-		goto err_switchdev_nb;
-	}
-
-	ethsw->port_switchdevb_nb.notifier_call = dpaa2_switch_port_blocking_event;
-	err = register_switchdev_blocking_notifier(&ethsw->port_switchdevb_nb);
-	if (err) {
-		dev_err(dev, "Failed to register switchdev blocking notifier\n");
-		goto err_switchdev_blocking_nb;
-	}
-
-	return 0;
-
-err_switchdev_blocking_nb:
-	unregister_switchdev_notifier(&ethsw->port_switchdev_nb);
-err_switchdev_nb:
-	unregister_netdevice_notifier(&ethsw->port_nb);
-	return err;
-}
-
 /* Build a linear skb based on a single-buffer frame descriptor */
 static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw,
 						     const struct dpaa2_fd *fd)
@@ -2426,10 +2382,6 @@ static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
 	if (err)
 		goto err_destroy_ordered_workqueue;
 
-	err = dpaa2_switch_register_notifier(dev);
-	if (err)
-		goto err_destroy_ordered_workqueue;
-
 	return 0;
 
 err_destroy_ordered_workqueue:
@@ -2496,38 +2448,12 @@ static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port)
 	return err;
 }
 
-static void dpaa2_switch_unregister_notifier(struct device *dev)
-{
-	struct ethsw_core *ethsw = dev_get_drvdata(dev);
-	struct notifier_block *nb;
-	int err;
-
-	nb = &ethsw->port_switchdevb_nb;
-	err = unregister_switchdev_blocking_notifier(nb);
-	if (err)
-		dev_err(dev,
-			"Failed to unregister switchdev blocking notifier (%d)\n",
-			err);
-
-	err = unregister_switchdev_notifier(&ethsw->port_switchdev_nb);
-	if (err)
-		dev_err(dev,
-			"Failed to unregister switchdev notifier (%d)\n", err);
-
-	err = unregister_netdevice_notifier(&ethsw->port_nb);
-	if (err)
-		dev_err(dev,
-			"Failed to unregister netdev notifier (%d)\n", err);
-}
-
 static void dpaa2_switch_takedown(struct fsl_mc_device *sw_dev)
 {
 	struct device *dev = &sw_dev->dev;
 	struct ethsw_core *ethsw = dev_get_drvdata(dev);
 	int err;
 
-	dpaa2_switch_unregister_notifier(dev);
-
 	err = dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle);
 	if (err)
 		dev_warn(dev, "dpsw_close err %d\n", err);
@@ -2761,7 +2687,93 @@ static struct fsl_mc_driver dpaa2_switch_drv = {
 	.match_id_table = dpaa2_switch_match_id_table
 };
 
-module_fsl_mc_driver(dpaa2_switch_drv);
+static struct notifier_block dpaa2_switch_port_nb __read_mostly = {
+	.notifier_call = dpaa2_switch_port_netdevice_event,
+};
+
+static struct notifier_block dpaa2_switch_port_switchdev_nb = {
+	.notifier_call = dpaa2_switch_port_event,
+};
+
+static struct notifier_block dpaa2_switch_port_switchdev_blocking_nb = {
+	.notifier_call = dpaa2_switch_port_blocking_event,
+};
+
+static int dpaa2_switch_register_notifiers(void)
+{
+	int err;
+
+	err = register_netdevice_notifier(&dpaa2_switch_port_nb);
+	if (err) {
+		pr_err("dpaa2-switch: failed to register net_device notifier (%d)\n", err);
+		return err;
+	}
+
+	err = register_switchdev_notifier(&dpaa2_switch_port_switchdev_nb);
+	if (err) {
+		pr_err("dpaa2-switch: failed to register switchdev notifier (%d)\n", err);
+		goto err_switchdev_nb;
+	}
+
+	err = register_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb);
+	if (err) {
+		pr_err("dpaa2-switch: failed to register switchdev blocking notifier (%d)\n", err);
+		goto err_switchdev_blocking_nb;
+	}
+
+	return 0;
+
+err_switchdev_blocking_nb:
+	unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb);
+err_switchdev_nb:
+	unregister_netdevice_notifier(&dpaa2_switch_port_nb);
+
+	return err;
+}
+
+static void dpaa2_switch_unregister_notifiers(void)
+{
+	int err;
+
+	err = unregister_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb);
+	if (err)
+		pr_err("dpaa2-switch: failed to unregister switchdev blocking notifier (%d)\n",
+		       err);
+
+	err = unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb);
+	if (err)
+		pr_err("dpaa2-switch: failed to unregister switchdev notifier (%d)\n", err);
+
+	err = unregister_netdevice_notifier(&dpaa2_switch_port_nb);
+	if (err)
+		pr_err("dpaa2-switch: failed to unregister net_device notifier (%d)\n", err);
+}
+
+static int __init dpaa2_switch_driver_init(void)
+{
+	int err;
+
+	err = fsl_mc_driver_register(&dpaa2_switch_drv);
+	if (err)
+		return err;
+
+	err = dpaa2_switch_register_notifiers();
+	if (err) {
+		fsl_mc_driver_unregister(&dpaa2_switch_drv);
+		return err;
+	}
+
+	return 0;
+}
+
+static void __exit dpaa2_switch_driver_exit(void)
+{
+	dpaa2_switch_unregister_notifiers();
+	fsl_mc_driver_unregister(&dpaa2_switch_drv);
+}
+
+module_init(dpaa2_switch_driver_init);
+module_exit(dpaa2_switch_driver_exit);
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver");
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index d83a9f17f672..0c228509fcd4 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -128,9 +128,6 @@ struct ethsw_core {
 
 	u8				vlans[VLAN_VID_MASK + 1];
 
-	struct notifier_block		port_nb;
-	struct notifier_block		port_switchdev_nb;
-	struct notifier_block		port_switchdevb_nb;
 	struct workqueue_struct		*workqueue;
 
 	struct dpaa2_switch_fq		fq[DPAA2_SWITCH_RX_NUM_FQS];
@@ -167,7 +164,6 @@ static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw)
 	return true;
 }
 
-bool dpaa2_switch_port_dev_check(const struct net_device *netdev,
-				 struct notifier_block *nb);
+bool dpaa2_switch_port_dev_check(const struct net_device *netdev);
 
 #endif	/* __ETHSW_H */
-- 
2.30.0

[PATCH net-next 12/15] staging: dpaa2-switch: accept only vlan-aware upper devices

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

The DPAA2 Switch is not capable to handle traffic in a VLAN unaware
fashion, thus the previous handling of both the accepted upper devices
and the SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING flag was wrong.

Fix this by checking if the bridge that we are joining is indeed VLAN
aware, if not return an error. Also, the RX VLAN filtering feature is
defined as 'on [fixed]' and the .ndo_vlan_rx_add_vid() and
.ndo_vlan_rx_kill_vid() callbacks are implemented just by recreating a
switchdev_obj_port_vlan object and then calling the same functions used
on the switchdev notifier path.
In addition, changing the vlan_filtering flag to 0 on a bridge under
which a DPAA2 switch interface is present is not supported, thus
rejected when SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING is received with
such a request.

This patch is also adding the use of the switchdev_handle_port_attr_set
function so that we can iterate through all the lower devices of the
bridge that the notification was received on and actually catch if the
user is trying to change the vlan_filtering state. Since on a VLAN
filtering change the net_device is the bridge, we also move the
dpaa2_switch_port_dev_check call so that we do not return NOTIFY_DONE
right away.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/staging/fsl-dpaa2/Kconfig       |  1 +
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 88 +++++++++++++++++++------
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h |  6 ++
 3 files changed, 76 insertions(+), 19 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/Kconfig b/drivers/staging/fsl-dpaa2/Kconfig
index 244237bb068a..7cb005b6e7ab 100644
--- a/drivers/staging/fsl-dpaa2/Kconfig
+++ b/drivers/staging/fsl-dpaa2/Kconfig
@@ -12,6 +12,7 @@ config FSL_DPAA2
 
 config FSL_DPAA2_ETHSW
 	tristate "Freescale DPAA2 Ethernet Switch"
+	depends on BRIDGE || BRIDGE=n
 	depends on FSL_DPAA2
 	depends on NET_SWITCHDEV
 	help
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 1f8976898291..8058bc3ed467 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -800,6 +800,34 @@ static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callba
 	return err;
 }
 
+static int dpaa2_switch_port_vlan_add(struct net_device *netdev, __be16 proto,
+				      u16 vid)
+{
+	struct switchdev_obj_port_vlan vlan = {
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
+		.vid = vid,
+		.obj.orig_dev = netdev,
+		/* This API only allows programming tagged, non-PVID VIDs */
+		.flags = 0,
+	};
+
+	return dpaa2_switch_port_vlans_add(netdev, &vlan);
+}
+
+static int dpaa2_switch_port_vlan_kill(struct net_device *netdev, __be16 proto,
+				       u16 vid)
+{
+	struct switchdev_obj_port_vlan vlan = {
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
+		.vid = vid,
+		.obj.orig_dev = netdev,
+		/* This API only allows programming tagged, non-PVID VIDs */
+		.flags = 0,
+	};
+
+	return dpaa2_switch_port_vlans_del(netdev, &vlan);
+}
+
 static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv)
 {
 	struct ethsw_core *ethsw = port_priv->ethsw_data;
@@ -981,6 +1009,8 @@ static const struct net_device_ops dpaa2_switch_port_ops = {
 	.ndo_has_offload_stats	= dpaa2_switch_port_has_offload_stats,
 	.ndo_get_offload_stats	= dpaa2_switch_port_get_offload_stats,
 	.ndo_fdb_dump		= dpaa2_switch_port_fdb_dump,
+	.ndo_vlan_rx_add_vid	= dpaa2_switch_port_vlan_add,
+	.ndo_vlan_rx_kill_vid	= dpaa2_switch_port_vlan_kill,
 
 	.ndo_start_xmit		= dpaa2_switch_port_tx,
 	.ndo_get_port_parent_id	= dpaa2_switch_port_parent_id,
@@ -1114,7 +1144,8 @@ static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev,
 }
 
 static int dpaa2_switch_port_attr_set(struct net_device *netdev,
-				      const struct switchdev_attr *attr)
+				      const struct switchdev_attr *attr,
+				      struct netlink_ext_ack *extack)
 {
 	int err = 0;
 
@@ -1124,7 +1155,11 @@ static int dpaa2_switch_port_attr_set(struct net_device *netdev,
 							   attr->u.stp_state);
 		break;
 	case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
-		/* VLANs are supported by default  */
+		if (!attr->u.vlan_filtering) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "The DPAA2 switch does not support VLAN-unaware operation");
+			return -EOPNOTSUPP;
+		}
 		break;
 	default:
 		err = -EOPNOTSUPP;
@@ -1134,8 +1169,8 @@ static int dpaa2_switch_port_attr_set(struct net_device *netdev,
 	return err;
 }
 
-static int dpaa2_switch_port_vlans_add(struct net_device *netdev,
-				       const struct switchdev_obj_port_vlan *vlan)
+int dpaa2_switch_port_vlans_add(struct net_device *netdev,
+				const struct switchdev_obj_port_vlan *vlan)
 {
 	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
 	struct ethsw_core *ethsw = port_priv->ethsw_data;
@@ -1303,8 +1338,8 @@ static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid
 	return 0;
 }
 
-static int dpaa2_switch_port_vlans_del(struct net_device *netdev,
-				       const struct switchdev_obj_port_vlan *vlan)
+int dpaa2_switch_port_vlans_del(struct net_device *netdev,
+				const struct switchdev_obj_port_vlan *vlan)
 {
 	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
 
@@ -1356,14 +1391,13 @@ static int dpaa2_switch_port_obj_del(struct net_device *netdev,
 }
 
 static int dpaa2_switch_port_attr_set_event(struct net_device *netdev,
-					    struct switchdev_notifier_port_attr_info
-					    *port_attr_info)
+					    struct switchdev_notifier_port_attr_info *ptr)
 {
 	int err;
 
-	err = dpaa2_switch_port_attr_set(netdev, port_attr_info->attr);
-
-	port_attr_info->handled = true;
+	err = switchdev_handle_port_attr_set(netdev, ptr,
+					     dpaa2_switch_port_dev_check,
+					     dpaa2_switch_port_attr_set);
 	return notifier_from_errno(err);
 }
 
@@ -1517,14 +1551,24 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
 {
 	struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
 	struct netdev_notifier_changeupper_info *info = ptr;
+	struct netlink_ext_ack *extack;
 	struct net_device *upper_dev;
 	int err = 0;
 
 	if (!dpaa2_switch_port_dev_check(netdev))
 		return NOTIFY_DONE;
 
-	/* Handle just upper dev link/unlink for the moment */
-	if (event == NETDEV_CHANGEUPPER) {
+	extack = netdev_notifier_info_to_extack(&info->info);
+
+	switch (event) {
+	case NETDEV_PRECHANGEUPPER:
+		upper_dev = info->upper_dev;
+		if (netif_is_bridge_master(upper_dev) && !br_vlan_enabled(upper_dev)) {
+			NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge");
+			err = -EOPNOTSUPP;
+		}
+		break;
+	case NETDEV_CHANGEUPPER:
 		upper_dev = info->upper_dev;
 		if (netif_is_bridge_master(upper_dev)) {
 			if (info->linking)
@@ -1532,6 +1576,7 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
 			else
 				err = dpaa2_switch_port_bridge_leave(netdev);
 		}
+		break;
 	}
 
 	return notifier_from_errno(err);
@@ -1597,12 +1642,12 @@ static int dpaa2_switch_port_event(struct notifier_block *nb,
 	struct switchdev_notifier_fdb_info *fdb_info = ptr;
 	struct ethsw_core *ethsw = port_priv->ethsw_data;
 
-	if (!dpaa2_switch_port_dev_check(dev))
-		return NOTIFY_DONE;
-
 	if (event == SWITCHDEV_PORT_ATTR_SET)
 		return dpaa2_switch_port_attr_set_event(dev, ptr);
 
+	if (!dpaa2_switch_port_dev_check(dev))
+		return NOTIFY_DONE;
+
 	switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
 	if (!switchdev_work)
 		return NOTIFY_BAD;
@@ -1646,6 +1691,9 @@ static int dpaa2_switch_port_obj_event(unsigned long event,
 {
 	int err = -EOPNOTSUPP;
 
+	if (!dpaa2_switch_port_dev_check(netdev))
+		return NOTIFY_DONE;
+
 	switch (event) {
 	case SWITCHDEV_PORT_OBJ_ADD:
 		err = dpaa2_switch_port_obj_add(netdev, port_obj_info->obj);
@@ -1664,9 +1712,6 @@ static int dpaa2_switch_port_blocking_event(struct notifier_block *nb,
 {
 	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
 
-	if (!dpaa2_switch_port_dev_check(dev))
-		return NOTIFY_DONE;
-
 	switch (event) {
 	case SWITCHDEV_PORT_OBJ_ADD:
 	case SWITCHDEV_PORT_OBJ_DEL:
@@ -2542,6 +2587,11 @@ static int dpaa2_switch_probe_port(struct ethsw_core *ethsw,
 	 */
 	ethsw->ports[port_idx] = port_priv;
 
+	/* The DPAA2 switch's ingress path depends on the VLAN table,
+	 * thus we are not able to disable VLAN filtering.
+	 */
+	port_netdev->features = NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER;
+
 	err = dpaa2_switch_port_init(port_priv, port_idx);
 	if (err)
 		goto err_port_probe;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index 0c228509fcd4..ac9335c83357 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -166,4 +166,10 @@ static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw)
 
 bool dpaa2_switch_port_dev_check(const struct net_device *netdev);
 
+int dpaa2_switch_port_vlans_add(struct net_device *netdev,
+				const struct switchdev_obj_port_vlan *vlan);
+
+int dpaa2_switch_port_vlans_del(struct net_device *netdev,
+				const struct switchdev_obj_port_vlan *vlan);
+
 #endif	/* __ETHSW_H */
-- 
2.30.0

[PATCH net-next 13/15] staging: dpaa2-switch: add fast-ageing on bridge leave

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Upon leaving a bridge, any MAC addresses learnt on the switch port prior
to this point have to be removed so that we preserve the bridging domain
configuration.

Restructure the dpaa2_switch_port_fdb_dump() function in order to have a
common dpaa2_switch_fdb_iterate() function between the FDB dump callback
and the fast age procedure. To accomplish this, add a new callback -
dpaa2_switch_fdb_cb_t - which will be called on each MAC addr and,
depending on the situation, will either dump the FDB entry into a
netlink message or will delete the address from the FDB table, in case
of the fast-age.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 76 +++++++++++++++++++------
 drivers/staging/fsl-dpaa2/ethsw/ethsw.h |  3 +
 2 files changed, 63 insertions(+), 16 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 8058bc3ed467..5fa7e41f6866 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -729,21 +729,14 @@ static int dpaa2_switch_port_fdb_valid_entry(struct fdb_dump_entry *entry,
 	return valid;
 }
 
-static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
-				      struct net_device *net_dev,
-				      struct net_device *filter_dev, int *idx)
+static int dpaa2_switch_fdb_iterate(struct ethsw_port_priv *port_priv,
+				    dpaa2_switch_fdb_cb_t cb, void *data)
 {
-	struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
+	struct net_device *net_dev = port_priv->netdev;
 	struct ethsw_core *ethsw = port_priv->ethsw_data;
 	struct device *dev = net_dev->dev.parent;
 	struct fdb_dump_entry *fdb_entries;
 	struct fdb_dump_entry fdb_entry;
-	struct ethsw_dump_ctx dump = {
-		.dev = net_dev,
-		.skb = skb,
-		.cb = cb,
-		.idx = *idx,
-	};
 	dma_addr_t fdb_dump_iova;
 	u16 num_fdb_entries;
 	u32 fdb_dump_size;
@@ -778,17 +771,12 @@ static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callba
 	for (i = 0; i < num_fdb_entries; i++) {
 		fdb_entry = fdb_entries[i];
 
-		if (!dpaa2_switch_port_fdb_valid_entry(&fdb_entry, port_priv))
-			continue;
-
-		err = dpaa2_switch_fdb_dump_nl(&fdb_entry, &dump);
+		err = cb(port_priv, &fdb_entry, data);
 		if (err)
 			goto end;
 	}
 
 end:
-	*idx = dump.idx;
-
 	kfree(dma_mem);
 
 	return 0;
@@ -800,6 +788,59 @@ static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callba
 	return err;
 }
 
+static int dpaa2_switch_fdb_entry_dump(struct ethsw_port_priv *port_priv,
+				       struct fdb_dump_entry *fdb_entry,
+				       void *data)
+{
+	if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv))
+		return 0;
+
+	return dpaa2_switch_fdb_dump_nl(fdb_entry, data);
+}
+
+static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
+				      struct net_device *net_dev,
+				      struct net_device *filter_dev, int *idx)
+{
+	struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
+	struct ethsw_dump_ctx dump = {
+		.dev = net_dev,
+		.skb = skb,
+		.cb = cb,
+		.idx = *idx,
+	};
+	int err;
+
+	err = dpaa2_switch_fdb_iterate(port_priv, dpaa2_switch_fdb_entry_dump, &dump);
+	*idx = dump.idx;
+
+	return err;
+}
+
+static int dpaa2_switch_fdb_entry_fast_age(struct ethsw_port_priv *port_priv,
+					   struct fdb_dump_entry *fdb_entry,
+					   void *data __always_unused)
+{
+	if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv))
+		return 0;
+
+	if (!(fdb_entry->type & DPSW_FDB_ENTRY_TYPE_DYNAMIC))
+		return 0;
+
+	if (fdb_entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST)
+		dpaa2_switch_port_fdb_del_uc(port_priv, fdb_entry->mac_addr);
+	else
+		dpaa2_switch_port_fdb_del_mc(port_priv, fdb_entry->mac_addr);
+
+	return 0;
+}
+
+static void dpaa2_switch_port_fast_age(struct ethsw_port_priv *port_priv)
+{
+	dpaa2_switch_fdb_iterate(port_priv,
+				 dpaa2_switch_fdb_entry_fast_age, NULL);
+}
+
 static int dpaa2_switch_port_vlan_add(struct net_device *netdev, __be16 proto,
 				      u16 vid)
 {
@@ -1511,6 +1552,9 @@ static int dpaa2_switch_port_bridge_leave(struct net_device *netdev)
 	struct ethsw_core *ethsw = port_priv->ethsw_data;
 	int err;
 
+	/* First of all, fast age any learn FDB addresses on this switch port */
+	dpaa2_switch_port_fast_age(port_priv);
+
 	/* Clear all RX VLANs installed through vlan_vid_add() either as VLAN
 	 * upper devices or otherwise from the FDB table that we are about to
 	 * leave
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index ac9335c83357..933563064015 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -172,4 +172,7 @@ int dpaa2_switch_port_vlans_add(struct net_device *netdev,
 int dpaa2_switch_port_vlans_del(struct net_device *netdev,
 				const struct switchdev_obj_port_vlan *vlan);
 
+typedef int dpaa2_switch_fdb_cb_t(struct ethsw_port_priv *port_priv,
+				  struct fdb_dump_entry *fdb_entry,
+				  void *data);
 #endif	/* __ETHSW_H */
-- 
2.30.0

[PATCH net-next 14/15] staging: dpaa2-switch: prevent joining a bridge while VLAN uppers are present

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Each time a switch port joins a bridge, it will start to use a FDB table
common with all the other switch ports that are under the same bridge.
This means that any VLAN added prior to a bridge join, will retain its
previous FDB table destination. With this patch, I choose to restrict
when a switch port can change it's upper device (either join or leave)
so that the driver does not have to delete all the previously installed
VLANs from the previous FDB and add them into the new one.

Thus, in the PRECHANGEUPPER  notification we check if there are any VLAN
type upper devices and if that's true, deny the CHANGEUPPER.

This way, the user is not restricted in the topology but rather in the
order in which the setup is done: it must first create the bridging
domain layout and after that add the necessary VLAN devices if
necessary. The teardown is similar, the VLAN devices will need to be
destroyed prior to a change in the bridging layout.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 30 ++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index 5fa7e41f6866..97292cf570c1 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -1590,6 +1590,21 @@ static int dpaa2_switch_port_bridge_leave(struct net_device *netdev)
 					  BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID);
 }
 
+static int dpaa2_switch_prevent_bridging_with_8021q_upper(struct net_device *netdev)
+{
+	struct net_device *upper_dev;
+	struct list_head *iter;
+
+	/* RCU read lock not necessary because we have write-side protection
+	 * (rtnl_mutex), however a non-rcu iterator does not exist.
+	 */
+	netdev_for_each_upper_dev_rcu(netdev, upper_dev, iter)
+		if (is_vlan_dev(upper_dev))
+			return -EOPNOTSUPP;
+
+	return 0;
+}
+
 static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
 					     unsigned long event, void *ptr)
 {
@@ -1607,10 +1622,22 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
 	switch (event) {
 	case NETDEV_PRECHANGEUPPER:
 		upper_dev = info->upper_dev;
-		if (netif_is_bridge_master(upper_dev) && !br_vlan_enabled(upper_dev)) {
+		if (!netif_is_bridge_master(upper_dev))
+			break;
+
+		if (!br_vlan_enabled(upper_dev)) {
 			NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge");
 			err = -EOPNOTSUPP;
+			goto out;
+		}
+
+		err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev);
+		if (err) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Cannot join a bridge while VLAN uppers are present");
+			goto out;
 		}
+
 		break;
 	case NETDEV_CHANGEUPPER:
 		upper_dev = info->upper_dev;
@@ -1623,6 +1650,7 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
 		break;
 	}
 
+out:
 	return notifier_from_errno(err);
 }
 
-- 
2.30.0

[PATCH net-next 15/15] staging: dpaa2-switch: move the driver out of staging

[Ioana Ciornei]

From: Ioana Ciornei <ioana.ciornei@nxp.com>

Now that the dpaa2-switch driver has basic I/O capabilities on the
switch port net_devices and multiple bridging domains are supported,
move the driver out of staging.

The dpaa2-switch driver is placed right next to the dpaa2-eth driver
since, in the near future, they will be sharing most of the data path.
I didn't implement code reuse in this patch series because I wanted to
keep it as small as possible.

Also, the README is removed from staging with the intention to add
proper rst documentation afterwards to actually match was is supported
by the driver.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
 MAINTAINERS                                   |   6 +-
 drivers/net/ethernet/freescale/dpaa2/Kconfig  |   8 ++
 drivers/net/ethernet/freescale/dpaa2/Makefile |   2 +
 .../freescale/dpaa2/dpaa2-switch-ethtool.c}   |   2 +-
 .../ethernet/freescale/dpaa2/dpaa2-switch.c}  |   2 +-
 .../ethernet/freescale/dpaa2/dpaa2-switch.h}  |   0
 .../ethernet/freescale/dpaa2}/dpsw-cmd.h      |   0
 .../ethernet/freescale/dpaa2}/dpsw.c          |   0
 .../ethernet/freescale/dpaa2}/dpsw.h          |   0
 drivers/staging/Kconfig                       |   2 -
 drivers/staging/Makefile                      |   1 -
 drivers/staging/fsl-dpaa2/Kconfig             |  20 ----
 drivers/staging/fsl-dpaa2/Makefile            |   6 -
 drivers/staging/fsl-dpaa2/ethsw/Makefile      |  10 --
 drivers/staging/fsl-dpaa2/ethsw/README        | 106 ------------------
 drivers/staging/fsl-dpaa2/ethsw/TODO          |  13 ---
 16 files changed, 15 insertions(+), 163 deletions(-)
 rename drivers/{staging/fsl-dpaa2/ethsw/ethsw-ethtool.c => net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c} (99%)
 rename drivers/{staging/fsl-dpaa2/ethsw/ethsw.c => net/ethernet/freescale/dpaa2/dpaa2-switch.c} (99%)
 rename drivers/{staging/fsl-dpaa2/ethsw/ethsw.h => net/ethernet/freescale/dpaa2/dpaa2-switch.h} (100%)
 rename drivers/{staging/fsl-dpaa2/ethsw => net/ethernet/freescale/dpaa2}/dpsw-cmd.h (100%)
 rename drivers/{staging/fsl-dpaa2/ethsw => net/ethernet/freescale/dpaa2}/dpsw.c (100%)
 rename drivers/{staging/fsl-dpaa2/ethsw => net/ethernet/freescale/dpaa2}/dpsw.h (100%)
 delete mode 100644 drivers/staging/fsl-dpaa2/Kconfig
 delete mode 100644 drivers/staging/fsl-dpaa2/Makefile
 delete mode 100644 drivers/staging/fsl-dpaa2/ethsw/Makefile
 delete mode 100644 drivers/staging/fsl-dpaa2/ethsw/README
 delete mode 100644 drivers/staging/fsl-dpaa2/ethsw/TODO

diff --git a/MAINTAINERS b/MAINTAINERS
index 973a937386fa..5716e2eba8de 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5471,11 +5471,11 @@ F:	drivers/net/ethernet/freescale/dpaa2/dpmac*
 F:	drivers/net/ethernet/freescale/dpaa2/dpni*
 
 DPAA2 ETHERNET SWITCH DRIVER
-M:	Ioana Radulescu <ruxandra.radulescu@nxp.com>
 M:	Ioana Ciornei <ioana.ciornei@nxp.com>
-L:	linux-kernel@vger.kernel.org
+L:	netdev@vger.kernel.org
 S:	Maintained
-F:	drivers/staging/fsl-dpaa2/ethsw
+F:	drivers/net/ethernet/freescale/dpaa2/dpaa2-switch*
+F:	drivers/net/ethernet/freescale/dpaa2/dpsw*
 
 DPT_I2O SCSI RAID DRIVER
 M:	Adaptec OEM Raid Solutions <aacraid@microsemi.com>
diff --git a/drivers/net/ethernet/freescale/dpaa2/Kconfig b/drivers/net/ethernet/freescale/dpaa2/Kconfig
index ee7a906e30b3..d029b69c3f18 100644
--- a/drivers/net/ethernet/freescale/dpaa2/Kconfig
+++ b/drivers/net/ethernet/freescale/dpaa2/Kconfig
@@ -29,3 +29,11 @@ config FSL_DPAA2_PTP_CLOCK
 	help
 	  This driver adds support for using the DPAA2 1588 timer module
 	  as a PTP clock.
+
+config FSL_DPAA2_SWITCH
+	tristate "Freescale DPAA2 Ethernet Switch"
+	depends on BRIDGE || BRIDGE=n
+	depends on NET_SWITCHDEV
+	help
+	  Driver for Freescale DPAA2 Ethernet Switch. This driver manages
+	  switch objects discovered on the Freeescale MC bus.
diff --git a/drivers/net/ethernet/freescale/dpaa2/Makefile b/drivers/net/ethernet/freescale/dpaa2/Makefile
index 146cb3540e61..644ef9ae02a3 100644
--- a/drivers/net/ethernet/freescale/dpaa2/Makefile
+++ b/drivers/net/ethernet/freescale/dpaa2/Makefile
@@ -5,11 +5,13 @@
 
 obj-$(CONFIG_FSL_DPAA2_ETH)		+= fsl-dpaa2-eth.o
 obj-$(CONFIG_FSL_DPAA2_PTP_CLOCK)	+= fsl-dpaa2-ptp.o
+obj-$(CONFIG_FSL_DPAA2_SWITCH)		+= fsl-dpaa2-switch.o
 
 fsl-dpaa2-eth-objs	:= dpaa2-eth.o dpaa2-ethtool.o dpni.o dpaa2-mac.o dpmac.o dpaa2-eth-devlink.o
 fsl-dpaa2-eth-${CONFIG_FSL_DPAA2_ETH_DCB} += dpaa2-eth-dcb.o
 fsl-dpaa2-eth-${CONFIG_DEBUG_FS} += dpaa2-eth-debugfs.o
 fsl-dpaa2-ptp-objs	:= dpaa2-ptp.o dprtc.o
+fsl-dpaa2-switch-objs	:= dpaa2-switch.o dpaa2-switch-ethtool.o dpsw.o
 
 # Needed by the tracing framework
 CFLAGS_dpaa2-eth.o := -I$(src)
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw-ethtool.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
similarity index 99%
rename from drivers/staging/fsl-dpaa2/ethsw/ethsw-ethtool.c
rename to drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
index 0af2e9914ec4..70e04321c420 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
@@ -9,7 +9,7 @@
 
 #include <linux/ethtool.h>
 
-#include "ethsw.h"
+#include "dpaa2-switch.h"
 
 static struct {
 	enum dpsw_counter id;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
similarity index 99%
rename from drivers/staging/fsl-dpaa2/ethsw/ethsw.c
rename to drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
index 97292cf570c1..2fd05dd18d46 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -17,7 +17,7 @@
 
 #include <linux/fsl/mc.h>
 
-#include "ethsw.h"
+#include "dpaa2-switch.h"
 
 /* Minimal supported DPSW version */
 #define DPSW_MIN_VER_MAJOR		8
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
similarity index 100%
rename from drivers/staging/fsl-dpaa2/ethsw/ethsw.h
rename to drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h b/drivers/net/ethernet/freescale/dpaa2/dpsw-cmd.h
similarity index 100%
rename from drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
rename to drivers/net/ethernet/freescale/dpaa2/dpsw-cmd.h
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c b/drivers/net/ethernet/freescale/dpaa2/dpsw.c
similarity index 100%
rename from drivers/staging/fsl-dpaa2/ethsw/dpsw.c
rename to drivers/net/ethernet/freescale/dpaa2/dpsw.c
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h b/drivers/net/ethernet/freescale/dpaa2/dpsw.h
similarity index 100%
rename from drivers/staging/fsl-dpaa2/ethsw/dpsw.h
rename to drivers/net/ethernet/freescale/dpaa2/dpsw.h
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index b22f73d7bfc4..6e798229fe25 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -78,8 +78,6 @@ source "drivers/staging/clocking-wizard/Kconfig"
 
 source "drivers/staging/fbtft/Kconfig"
 
-source "drivers/staging/fsl-dpaa2/Kconfig"
-
 source "drivers/staging/most/Kconfig"
 
 source "drivers/staging/ks7010/Kconfig"
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 2245059e69c7..8d4d9812ecdf 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -29,7 +29,6 @@ obj-$(CONFIG_GS_FPGABOOT)	+= gs_fpgaboot/
 obj-$(CONFIG_UNISYSSPAR)	+= unisys/
 obj-$(CONFIG_COMMON_CLK_XLNX_CLKWZRD)	+= clocking-wizard/
 obj-$(CONFIG_FB_TFT)		+= fbtft/
-obj-$(CONFIG_FSL_DPAA2)		+= fsl-dpaa2/
 obj-$(CONFIG_MOST)		+= most/
 obj-$(CONFIG_KS7010)		+= ks7010/
 obj-$(CONFIG_GREYBUS)		+= greybus/
diff --git a/drivers/staging/fsl-dpaa2/Kconfig b/drivers/staging/fsl-dpaa2/Kconfig
deleted file mode 100644
index 7cb005b6e7ab..000000000000
--- a/drivers/staging/fsl-dpaa2/Kconfig
+++ /dev/null
@@ -1,20 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Freescale DataPath Acceleration Architecture Gen2 (DPAA2) drivers
-#
-
-config FSL_DPAA2
-	bool "Freescale DPAA2 devices"
-	depends on FSL_MC_BUS
-	help
-	  Build drivers for Freescale DataPath Acceleration
-	  Architecture (DPAA2) family of SoCs.
-
-config FSL_DPAA2_ETHSW
-	tristate "Freescale DPAA2 Ethernet Switch"
-	depends on BRIDGE || BRIDGE=n
-	depends on FSL_DPAA2
-	depends on NET_SWITCHDEV
-	help
-	  Driver for Freescale DPAA2 Ethernet Switch. Select
-	  BRIDGE to have support for bridge tools.
diff --git a/drivers/staging/fsl-dpaa2/Makefile b/drivers/staging/fsl-dpaa2/Makefile
deleted file mode 100644
index 9645db7689c9..000000000000
--- a/drivers/staging/fsl-dpaa2/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Freescale DataPath Acceleration Architecture Gen2 (DPAA2) drivers
-#
-
-obj-$(CONFIG_FSL_DPAA2_ETHSW)		+= ethsw/
diff --git a/drivers/staging/fsl-dpaa2/ethsw/Makefile b/drivers/staging/fsl-dpaa2/ethsw/Makefile
deleted file mode 100644
index f6f2cf798faf..000000000000
--- a/drivers/staging/fsl-dpaa2/ethsw/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the Freescale DPAA2 Ethernet Switch
-#
-# Copyright 2014-2017 Freescale Semiconductor Inc.
-# Copyright 2017-2018 NXP
-
-obj-$(CONFIG_FSL_DPAA2_ETHSW) += dpaa2-ethsw.o
-
-dpaa2-ethsw-objs := ethsw.o ethsw-ethtool.o dpsw.o
diff --git a/drivers/staging/fsl-dpaa2/ethsw/README b/drivers/staging/fsl-dpaa2/ethsw/README
deleted file mode 100644
index b48dcbf7c5fb..000000000000
--- a/drivers/staging/fsl-dpaa2/ethsw/README
+++ /dev/null
@@ -1,106 +0,0 @@
-DPAA2 Ethernet Switch driver
-============================
-
-This file provides documentation for the DPAA2 Ethernet Switch driver
-
-
-Contents
-========
-	Supported Platforms
-	Architecture Overview
-	Creating an Ethernet Switch
-	Features
-
-
-	Supported Platforms
-===================
-This driver provides networking support for Freescale LS2085A, LS2088A
-DPAA2 SoCs.
-
-
-Architecture Overview
-=====================
-The Ethernet Switch in the DPAA2 architecture consists of several hardware
-resources that provide the functionality. These are allocated and
-configured via the Management Complex (MC) portals. MC abstracts most of
-these resources as DPAA2 objects and exposes ABIs through which they can
-be configured and controlled.
-
-For a more detailed description of the DPAA2 architecture and its object
-abstractions see:
-	drivers/staging/fsl-mc/README.txt
-
-The Ethernet Switch is built on top of a Datapath Switch (DPSW) object.
-
-Configuration interface:
-
-          ---------------------
-         | DPAA2 Switch driver |
-          ---------------------
-                   .
-                   .
-              ----------
-             | DPSW API |
-              ----------
-                   .           software
- ================= . ==============
-                   .           hardware
-          ---------------------
-         | MC hardware portals |
-          ---------------------
-                   .
-                   .
-                 ------
-                | DPSW |
-                 ------
-
-Driver uses the switch device driver model and exposes each switch port as
-a network interface, which can be included in a bridge. Traffic switched
-between ports is offloaded into the hardware. Exposed network interfaces
-are not used for I/O, they are used just for configuration. This
-limitation is going to be addressed in the future.
-
-The DPSW can have ports connected to DPNIs or to PHYs via DPMACs.
-
-
- [ethA]     [ethB]     [ethC]     [ethD]     [ethE]     [ethF]
-    :          :          :          :          :          :
-    :          :          :          :          :          :
-[eth drv]  [eth drv]  [                ethsw drv              ]
-    :          :          :          :          :          :        kernel
-========================================================================
-    :          :          :          :          :          :        hardware
- [DPNI]      [DPNI]     [============= DPSW =================]
-    |          |          |          |          |          |
-    |           ----------           |       [DPMAC]    [DPMAC]
-     -------------------------------            |          |
-                                                |          |
-                                              [PHY]      [PHY]
-
-For a more detailed description of the Ethernet switch device driver model
-see:
-	Documentation/networking/switchdev.rst
-
-Creating an Ethernet Switch
-===========================
-A device is created for the switch objects probed on the MC bus. Each DPSW
-has a number of properties which determine the configuration options and
-associated hardware resources.
-
-A DPSW object (and the other DPAA2 objects needed for a DPAA2 switch) can
-be added to a container on the MC bus in one of two ways: statically,
-through a Datapath Layout Binary file (DPL) that is parsed by MC at boot
-time; or created dynamically at runtime, via the DPAA2 objects APIs.
-
-Features
-========
-Driver configures DPSW to perform hardware switching offload of
-unicast/multicast/broadcast (VLAN tagged or untagged) traffic between its
-ports.
-
-It allows configuration of hardware learning, flooding, multicast groups,
-port VLAN configuration and STP state.
-
-Static entries can be added/removed from the FDB.
-
-Hardware statistics for each port are provided through ethtool -S option.
diff --git a/drivers/staging/fsl-dpaa2/ethsw/TODO b/drivers/staging/fsl-dpaa2/ethsw/TODO
deleted file mode 100644
index 4d46857b0b2b..000000000000
--- a/drivers/staging/fsl-dpaa2/ethsw/TODO
+++ /dev/null
@@ -1,13 +0,0 @@
-* Add I/O capabilities on switch port netdevices. This will allow control
-traffic to reach the CPU.
-* Add ACL to redirect control traffic to CPU.
-* Add support for multiple FDBs and switch port partitioning
-* MC firmware uprev; the DPAA2 objects used by the Ethernet Switch driver
-need to be kept in sync with binary interface changes in MC
-* refine README file
-* cleanup
-
-NOTE: At least first three of the above are required before getting the
-DPAA2 Ethernet Switch driver out of staging. Another requirement is that
-dpio driver is moved to drivers/soc (this is required for I/O).
-
-- 
2.30.0

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[Greg KH]

On Wed, Mar 10, 2021 at 02:14:37PM +0200, Ioana Ciornei wrote:
> From: Ioana Ciornei <ioana.ciornei@nxp.com>
> 
> This patch set adds support for Rx/Tx capabilities on DPAA2 switch port
> interfaces as well as fixing up some major blunders in how we take care
> of the switching domains. The last patch actually moves the driver out
> of staging now that the minimum requirements are met.
> 
> I am sending this directly towards the net-next tree so that I can use
> the rest of the development cycle adding new features on top of the
> current driver without worrying about merge conflicts between the
> staging and net-next tree.
> 
> The control interface is comprised of 3 queues in total: Rx, Rx error
> and Tx confirmation. In this patch set we only enable Rx and Tx conf.
> All switch ports share the same queues when frames are redirected to the
> CPU.  Information regarding the ingress switch port is passed through
> frame metadata - the flow context field of the descriptor.
> 
> NAPI instances are also shared between switch net_devices and are
> enabled when at least on one of the switch ports .dev_open() was called
> and disabled when no switch port is still up.
> 
> Since the last version of this feature was submitted to the list, I
> reworked how the switching and flooding domains are taken care of by the
> driver, thus the switch is now able to also add the control port (the
> queues that the CPU can dequeue from) into the flooding domains of a
> port (broadcast, unknown unicast etc). With this, we are able to receive
> and sent traffic from the switch interfaces.
> 
> Also, the capability to properly partition the DPSW object into multiple
> switching domains was added so that when not under a bridge, the ports
> are not actually capable to switch between them. This is possible by
> adding a private FDB table per switch interface.  When multiple switch
> interfaces are under the same bridge, they will all use the same FDB
> table.
> 
> Another thing that is fixed in this patch set is how the driver handles
> VLAN awareness. The DPAA2 switch is not capable to run as VLAN unaware
> but this was not reflected in how the driver responded to requests to
> change the VLAN awareness. In the last patch, this is fixed by
> describing the switch interfaces as Rx VLAN filtering on [fixed] and
> declining any request to join a VLAN unaware bridge.

I'll take the first 14 patches now, and then you will have a "clean"
place to ask for the movement of this out of staging.

thanks,

greg k-h

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[Ioana Ciornei]

On Wed, Mar 10, 2021 at 01:44:46PM +0100, Greg KH wrote:
> On Wed, Mar 10, 2021 at 02:14:37PM +0200, Ioana Ciornei wrote:
> > From: Ioana Ciornei <ioana.ciornei@nxp.com>
> > 
> > This patch set adds support for Rx/Tx capabilities on DPAA2 switch port
> > interfaces as well as fixing up some major blunders in how we take care
> > of the switching domains. The last patch actually moves the driver out
> > of staging now that the minimum requirements are met.
> > 
> > I am sending this directly towards the net-next tree so that I can use
> > the rest of the development cycle adding new features on top of the
> > current driver without worrying about merge conflicts between the
> > staging and net-next tree.
> > 
> > The control interface is comprised of 3 queues in total: Rx, Rx error
> > and Tx confirmation. In this patch set we only enable Rx and Tx conf.
> > All switch ports share the same queues when frames are redirected to the
> > CPU.  Information regarding the ingress switch port is passed through
> > frame metadata - the flow context field of the descriptor.
> > 
> > NAPI instances are also shared between switch net_devices and are
> > enabled when at least on one of the switch ports .dev_open() was called
> > and disabled when no switch port is still up.
> > 
> > Since the last version of this feature was submitted to the list, I
> > reworked how the switching and flooding domains are taken care of by the
> > driver, thus the switch is now able to also add the control port (the
> > queues that the CPU can dequeue from) into the flooding domains of a
> > port (broadcast, unknown unicast etc). With this, we are able to receive
> > and sent traffic from the switch interfaces.
> > 
> > Also, the capability to properly partition the DPSW object into multiple
> > switching domains was added so that when not under a bridge, the ports
> > are not actually capable to switch between them. This is possible by
> > adding a private FDB table per switch interface.  When multiple switch
> > interfaces are under the same bridge, they will all use the same FDB
> > table.
> > 
> > Another thing that is fixed in this patch set is how the driver handles
> > VLAN awareness. The DPAA2 switch is not capable to run as VLAN unaware
> > but this was not reflected in how the driver responded to requests to
> > change the VLAN awareness. In the last patch, this is fixed by
> > describing the switch interfaces as Rx VLAN filtering on [fixed] and
> > declining any request to join a VLAN unaware bridge.
> 
> I'll take the first 14 patches now, and then you will have a "clean"
> place to ask for the movement of this out of staging.
> 

I was about to respond but it seems that you already applied them into
the staging tree. By the way, I was expecting a bit of review from the
netdev community since these changes are mainly to get the driver in a
proper state for the move.

Ok, I am mainly interested in getting all these patches into net-next as
well so that other general switchdev changes do not generate conflicts.

I assume that the next step would be to get acks from the netdev
maintainers especially on the last patch, merge the move in the staging
tree and then get all these changes into net-next through some kind of
cross-tree merge?

Ioana

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[Greg KH]

On Wed, Mar 10, 2021 at 03:47:44PM +0200, Ioana Ciornei wrote:
> On Wed, Mar 10, 2021 at 01:44:46PM +0100, Greg KH wrote:
> > On Wed, Mar 10, 2021 at 02:14:37PM +0200, Ioana Ciornei wrote:
> > > From: Ioana Ciornei <ioana.ciornei@nxp.com>
> > > 
> > > This patch set adds support for Rx/Tx capabilities on DPAA2 switch port
> > > interfaces as well as fixing up some major blunders in how we take care
> > > of the switching domains. The last patch actually moves the driver out
> > > of staging now that the minimum requirements are met.
> > > 
> > > I am sending this directly towards the net-next tree so that I can use
> > > the rest of the development cycle adding new features on top of the
> > > current driver without worrying about merge conflicts between the
> > > staging and net-next tree.
> > > 
> > > The control interface is comprised of 3 queues in total: Rx, Rx error
> > > and Tx confirmation. In this patch set we only enable Rx and Tx conf.
> > > All switch ports share the same queues when frames are redirected to the
> > > CPU.  Information regarding the ingress switch port is passed through
> > > frame metadata - the flow context field of the descriptor.
> > > 
> > > NAPI instances are also shared between switch net_devices and are
> > > enabled when at least on one of the switch ports .dev_open() was called
> > > and disabled when no switch port is still up.
> > > 
> > > Since the last version of this feature was submitted to the list, I
> > > reworked how the switching and flooding domains are taken care of by the
> > > driver, thus the switch is now able to also add the control port (the
> > > queues that the CPU can dequeue from) into the flooding domains of a
> > > port (broadcast, unknown unicast etc). With this, we are able to receive
> > > and sent traffic from the switch interfaces.
> > > 
> > > Also, the capability to properly partition the DPSW object into multiple
> > > switching domains was added so that when not under a bridge, the ports
> > > are not actually capable to switch between them. This is possible by
> > > adding a private FDB table per switch interface.  When multiple switch
> > > interfaces are under the same bridge, they will all use the same FDB
> > > table.
> > > 
> > > Another thing that is fixed in this patch set is how the driver handles
> > > VLAN awareness. The DPAA2 switch is not capable to run as VLAN unaware
> > > but this was not reflected in how the driver responded to requests to
> > > change the VLAN awareness. In the last patch, this is fixed by
> > > describing the switch interfaces as Rx VLAN filtering on [fixed] and
> > > declining any request to join a VLAN unaware bridge.
> > 
> > I'll take the first 14 patches now, and then you will have a "clean"
> > place to ask for the movement of this out of staging.
> > 
> 
> I was about to respond but it seems that you already applied them into
> the staging tree. By the way, I was expecting a bit of review from the
> netdev community since these changes are mainly to get the driver in a
> proper state for the move.

They are only in my "testing" branch, I can easily drop them right now
if you want me to.

> Ok, I am mainly interested in getting all these patches into net-next as
> well so that other general switchdev changes do not generate conflicts.

What other general switchdev changes?

> I assume that the next step would be to get acks from the netdev
> maintainers especially on the last patch, merge the move in the staging
> tree and then get all these changes into net-next through some kind of
> cross-tree merge?

Yes, either I can provide a stable tag to pull from for the netdev
maintainers, or they can just add the whole driver to the "proper" place
in the network tree and I can drop the one in staging entirely.  Or
people can wait until 5.13-rc1 when this all shows up in Linus's tree,
whatever works best for the networking maintainers, after reviewing it.

thanks,

greg k-h

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[Vladimir Oltean]

Hey Greg,

On Wed, Mar 10, 2021 at 03:12:57PM +0100, Greg KH wrote:
> > Ok, I am mainly interested in getting all these patches into net-next as
> > well so that other general switchdev changes do not generate conflicts.
>
> What other general switchdev changes?

During the merge window I sent some RFC patches that change the
interaction between all switchdev drivers and the bridge:
https://patchwork.kernel.org/project/netdevbpf/patch/20210224114350.2791260-17-olteanv@gmail.com/

I would like to be able to submit that patch as non-RFC (to the net-next
tree, of course) during this release cycle, and it touches the dpaa2
switch.

Let's see what the network maintainers think about dealing with this
cross-tree situation.

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[Ioana Ciornei]

On Wed, Mar 10, 2021 at 03:12:57PM +0100, Greg KH wrote:
> On Wed, Mar 10, 2021 at 03:47:44PM +0200, Ioana Ciornei wrote:
> > On Wed, Mar 10, 2021 at 01:44:46PM +0100, Greg KH wrote:
> > > On Wed, Mar 10, 2021 at 02:14:37PM +0200, Ioana Ciornei wrote:
> > > > From: Ioana Ciornei <ioana.ciornei@nxp.com>
> > > > 
> > > > This patch set adds support for Rx/Tx capabilities on DPAA2 switch port
> > > > interfaces as well as fixing up some major blunders in how we take care
> > > > of the switching domains. The last patch actually moves the driver out
> > > > of staging now that the minimum requirements are met.
> > > > 
> > > > I am sending this directly towards the net-next tree so that I can use
> > > > the rest of the development cycle adding new features on top of the
> > > > current driver without worrying about merge conflicts between the
> > > > staging and net-next tree.
> > > > 
> > > > The control interface is comprised of 3 queues in total: Rx, Rx error
> > > > and Tx confirmation. In this patch set we only enable Rx and Tx conf.
> > > > All switch ports share the same queues when frames are redirected to the
> > > > CPU.  Information regarding the ingress switch port is passed through
> > > > frame metadata - the flow context field of the descriptor.
> > > > 
> > > > NAPI instances are also shared between switch net_devices and are
> > > > enabled when at least on one of the switch ports .dev_open() was called
> > > > and disabled when no switch port is still up.
> > > > 
> > > > Since the last version of this feature was submitted to the list, I
> > > > reworked how the switching and flooding domains are taken care of by the
> > > > driver, thus the switch is now able to also add the control port (the
> > > > queues that the CPU can dequeue from) into the flooding domains of a
> > > > port (broadcast, unknown unicast etc). With this, we are able to receive
> > > > and sent traffic from the switch interfaces.
> > > > 
> > > > Also, the capability to properly partition the DPSW object into multiple
> > > > switching domains was added so that when not under a bridge, the ports
> > > > are not actually capable to switch between them. This is possible by
> > > > adding a private FDB table per switch interface.  When multiple switch
> > > > interfaces are under the same bridge, they will all use the same FDB
> > > > table.
> > > > 
> > > > Another thing that is fixed in this patch set is how the driver handles
> > > > VLAN awareness. The DPAA2 switch is not capable to run as VLAN unaware
> > > > but this was not reflected in how the driver responded to requests to
> > > > change the VLAN awareness. In the last patch, this is fixed by
> > > > describing the switch interfaces as Rx VLAN filtering on [fixed] and
> > > > declining any request to join a VLAN unaware bridge.
> > > 
> > > I'll take the first 14 patches now, and then you will have a "clean"
> > > place to ask for the movement of this out of staging.
> > > 
> > 
> > I was about to respond but it seems that you already applied them into
> > the staging tree. By the way, I was expecting a bit of review from the
> > netdev community since these changes are mainly to get the driver in a
> > proper state for the move.
> 
> They are only in my "testing" branch, I can easily drop them right now
> if you want me to.

Well, it seems that I added some checks at the last minute, forgot to
compile-test patch by patch and the checks were added too early in the
series therefore it fails to build now on patches 10 and 11.

Could you please just drop this so that that I can respin them with that
addressed as well as any other review feedback?

Ioana

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[David Miller]

From: Greg KH <gregkh@linuxfoundation.org>
Date: Wed, 10 Mar 2021 15:12:57 +0100

> Yes, either I can provide a stable tag to pull from for the netdev
> maintainers, or they can just add the whole driver to the "proper" place
> in the network tree and I can drop the one in staging entirely.  Or
> people can wait until 5.13-rc1 when this all shows up in Linus's tree,
> whatever works best for the networking maintainers, after reviewing it.

I've added this whole series to my tree as I think that makes things easiest
for everyone.

Thanks!

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (refs/heads/master):

On Wed, 10 Mar 2021 14:14:37 +0200 you wrote:
> From: Ioana Ciornei <ioana.ciornei@nxp.com>
> 
> This patch set adds support for Rx/Tx capabilities on DPAA2 switch port
> interfaces as well as fixing up some major blunders in how we take care
> of the switching domains. The last patch actually moves the driver out
> of staging now that the minimum requirements are met.
> 
> [...]

Here is the summary with links:
  - [net-next,01/15] staging: dpaa2-switch: remove broken learning and flooding support
    https://git.kernel.org/netdev/net-next/c/93a4d0ab1e44
  - [net-next,02/15] staging: dpaa2-switch: fix up initial forwarding configuration done by firmware
    https://git.kernel.org/netdev/net-next/c/282d47de29c7
  - [net-next,03/15] staging: dpaa2-switch: remove obsolete .ndo_fdb_{add|del} callbacks
    https://git.kernel.org/netdev/net-next/c/5dda9a7921c7
  - [net-next,04/15] staging: dpaa2-switch: get control interface attributes
    https://git.kernel.org/netdev/net-next/c/26d419f36a23
  - [net-next,05/15] staging: dpaa2-switch: setup buffer pool and RX path rings
    https://git.kernel.org/netdev/net-next/c/2877e4f7e189
  - [net-next,06/15] staging: dpaa2-switch: setup dpio
    https://git.kernel.org/netdev/net-next/c/04abc97d3ef7
  - [net-next,07/15] staging: dpaa2-switch: handle Rx path on control interface
    https://git.kernel.org/netdev/net-next/c/0b1b71370458
  - [net-next,08/15] staging: dpaa2-switch: add .ndo_start_xmit() callback
    https://git.kernel.org/netdev/net-next/c/7fd94d86b7f4
  - [net-next,09/15] staging: dpaa2-switch: enable the control interface
    https://git.kernel.org/netdev/net-next/c/613c0a5810b7
  - [net-next,10/15] staging: dpaa2-switch: properly setup switching domains
    https://git.kernel.org/netdev/net-next/c/539dda3c5d19
  - [net-next,11/15] staging: dpaa2-switch: move the notifier register to module_init()
    https://git.kernel.org/netdev/net-next/c/16abb6ad6abc
  - [net-next,12/15] staging: dpaa2-switch: accept only vlan-aware upper devices
    https://git.kernel.org/netdev/net-next/c/d671407fccbb
  - [net-next,13/15] staging: dpaa2-switch: add fast-ageing on bridge leave
    https://git.kernel.org/netdev/net-next/c/685b480145c1
  - [net-next,14/15] staging: dpaa2-switch: prevent joining a bridge while VLAN uppers are present
    https://git.kernel.org/netdev/net-next/c/1c4928fc2929
  - [net-next,15/15] staging: dpaa2-switch: move the driver out of staging
    https://git.kernel.org/netdev/net-next/c/f48298d3fbfa

You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[Ioana Ciornei]

On Wed, Mar 10, 2021 at 03:13:10PM -0800, David Miller wrote:
> From: Greg KH <gregkh@linuxfoundation.org>
> Date: Wed, 10 Mar 2021 15:12:57 +0100
> 
> > Yes, either I can provide a stable tag to pull from for the netdev
> > maintainers, or they can just add the whole driver to the "proper" place
> > in the network tree and I can drop the one in staging entirely.  Or
> > people can wait until 5.13-rc1 when this all shows up in Linus's tree,
> > whatever works best for the networking maintainers, after reviewing it.
> 
> I've added this whole series to my tree as I think that makes things easiest
> for everyone.
> 
> Thanks!

Sorry for bothering you again.. but it seems that Greg has also added
the first 14 patches to staging-next. I just want to make sure that the
linux-next will be happy with these patches being in 2 trees.

Thanks!

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[Greg KH]

On Thu, Mar 11, 2021 at 08:54:37AM +0200, Ioana Ciornei wrote:
> On Wed, Mar 10, 2021 at 03:13:10PM -0800, David Miller wrote:
> > From: Greg KH <gregkh@linuxfoundation.org>
> > Date: Wed, 10 Mar 2021 15:12:57 +0100
> > 
> > > Yes, either I can provide a stable tag to pull from for the netdev
> > > maintainers, or they can just add the whole driver to the "proper" place
> > > in the network tree and I can drop the one in staging entirely.  Or
> > > people can wait until 5.13-rc1 when this all shows up in Linus's tree,
> > > whatever works best for the networking maintainers, after reviewing it.
> > 
> > I've added this whole series to my tree as I think that makes things easiest
> > for everyone.
> > 
> > Thanks!
> 
> Sorry for bothering you again.. but it seems that Greg has also added
> the first 14 patches to staging-next. I just want to make sure that the
> linux-next will be happy with these patches being in 2 trees.

It should, git is nice :)

I can also just drop them from my staging tree as well, that's trivial.

thanks,

greg k-h

Re: [PATCH net-next 00/15] dpaa2-switch: CPU terminated traffic and move out of staging

[Greg KH]

On Thu, Mar 11, 2021 at 08:04:29AM +0100, Greg KH wrote:
> On Thu, Mar 11, 2021 at 08:54:37AM +0200, Ioana Ciornei wrote:
> > On Wed, Mar 10, 2021 at 03:13:10PM -0800, David Miller wrote:
> > > From: Greg KH <gregkh@linuxfoundation.org>
> > > Date: Wed, 10 Mar 2021 15:12:57 +0100
> > > 
> > > > Yes, either I can provide a stable tag to pull from for the netdev
> > > > maintainers, or they can just add the whole driver to the "proper" place
> > > > in the network tree and I can drop the one in staging entirely.  Or
> > > > people can wait until 5.13-rc1 when this all shows up in Linus's tree,
> > > > whatever works best for the networking maintainers, after reviewing it.
> > > 
> > > I've added this whole series to my tree as I think that makes things easiest
> > > for everyone.
> > > 
> > > Thanks!
> > 
> > Sorry for bothering you again.. but it seems that Greg has also added
> > the first 14 patches to staging-next. I just want to make sure that the
> > linux-next will be happy with these patches being in 2 trees.
> 
> It should, git is nice :)
> 
> I can also just drop them from my staging tree as well, that's trivial.

Ah, just saw your "these are broken" email, I'll go drop these.

thanks,

greg k-h