Merge branch 'mlxsw-flooding-and-cosmetics'

Jiri Pirko says:

====================
mlxsw: driver update

This driver update mainly brings support for user to be able to setup
flooding on specified port, via bridge flag. Also, there is a fix in ageing
time conversion. The rest is just cosmetics.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

9 files changed, 122 insertions, 73 deletions

diff --git a/Documentation/networking/switchdev.txt b/Documentation/networking/switchdev.txt
index 0714fe555016..91994134efca 100644
--- a/Documentation/networking/switchdev.txt
+++ b/Documentation/networking/switchdev.txt
@@ -278,8 +278,8 @@ Flooding L2 domain
 For a given L2 VLAN domain, the switch device should flood multicast/broadcast
 and unknown unicast packets to all ports in domain, if allowed by port's
 current STP state.  The switch driver, knowing which ports are within which
-vlan L2 domain, can program the switch device for flooding.  The packet should
-also be sent to the port netdev for processing by the bridge driver.  The
+vlan L2 domain, can program the switch device for flooding.  The packet may
+be sent to the port netdev for processing by the bridge driver.  The
 bridge should not reflood the packet to the same ports the device flooded,
 otherwise there will be duplicate packets on the wire.
 
@@ -298,6 +298,9 @@ packets up to the bridge driver for flooding.  This is not ideal as the number
 of ports scale in the L2 domain as the device is much more efficient at
 flooding packets that software.
 
+If supported by the device, flood control can be offloaded to it, preventing
+certain netdevs from flooding unicast traffic for which there is no FDB entry.
+
 IGMP Snooping
 ^^^^^^^^^^^^^
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index bd80ac714a8a..97f0d93caf99 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -287,7 +287,7 @@ static void mlxsw_emad_pack_op_tlv(char *op_tlv,
 	mlxsw_emad_op_tlv_status_set(op_tlv, 0);
 	mlxsw_emad_op_tlv_register_id_set(op_tlv, reg->id);
 	mlxsw_emad_op_tlv_r_set(op_tlv, MLXSW_EMAD_OP_TLV_REQUEST);
-	if (MLXSW_CORE_REG_ACCESS_TYPE_QUERY == type)
+	if (type == MLXSW_CORE_REG_ACCESS_TYPE_QUERY)
 		mlxsw_emad_op_tlv_method_set(op_tlv,
 					     MLXSW_EMAD_OP_TLV_METHOD_QUERY);
 	else
@@ -362,7 +362,7 @@ static bool mlxsw_emad_is_resp(const struct sk_buff *skb)
 	char *op_tlv;
 
 	op_tlv = mlxsw_emad_op_tlv(skb);
-	return (MLXSW_EMAD_OP_TLV_RESPONSE == mlxsw_emad_op_tlv_r_get(op_tlv));
+	return (mlxsw_emad_op_tlv_r_get(op_tlv) == MLXSW_EMAD_OP_TLV_RESPONSE);
 }
 
 #define MLXSW_EMAD_TIMEOUT_MS 200
diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
index 371ea3f56aed..de69e719dc9d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -1662,8 +1662,9 @@ static int mlxsw_pci_cmd_exec(void *bus_priv, u16 opcode, u8 opcode_mod,
 							   CIR_OUT_PARAM_LO));
 			memcpy(out_mbox + sizeof(tmp), &tmp, sizeof(tmp));
 		}
-	} else if (!err && out_mbox)
+	} else if (!err && out_mbox) {
 		memcpy(out_mbox, mlxsw_pci->cmd.out_mbox.buf, out_mbox_size);
+	}
 
 	mutex_unlock(&mlxsw_pci->cmd.lock);
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index 4fcba46bbae0..236fb5d2ad69 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -348,8 +348,9 @@ MLXSW_ITEM32_INDEXED(reg, sfd, rec_action, MLXSW_REG_SFD_BASE_LEN, 28, 4,
 		     MLXSW_REG_SFD_REC_LEN, 0x0C, false);
 
 /* reg_sfd_uc_sub_port
- * LAG sub port.
- * Must be 0 if multichannel VEPA is not enabled.
+ * VEPA channel on local port.
+ * Valid only if local port is a non-stacking port. Must be 0 if multichannel
+ * VEPA is not enabled.
  * Access: RW
  */
 MLXSW_ITEM32_INDEXED(reg, sfd, uc_sub_port, MLXSW_REG_SFD_BASE_LEN, 16, 8,
@@ -396,10 +397,9 @@ static inline void mlxsw_reg_sfd_uc_pack(char *payload, int rec_index,
 	mlxsw_reg_sfd_uc_system_port_set(payload, rec_index, local_port);
 }
 
-static inline void
-mlxsw_reg_sfd_uc_unpack(char *payload, int rec_index,
-			char *mac, u16 *p_vid,
-			u8 *p_local_port)
+static inline void mlxsw_reg_sfd_uc_unpack(char *payload, int rec_index,
+					   char *mac, u16 *p_vid,
+					   u8 *p_local_port)
 {
 	mlxsw_reg_sfd_rec_mac_memcpy_from(payload, rec_index, mac);
 	*p_vid = mlxsw_reg_sfd_uc_fid_vid_get(payload, rec_index);
@@ -474,7 +474,7 @@ MLXSW_ITEM32_INDEXED(reg, sfn, rec_type, MLXSW_REG_SFN_BASE_LEN, 20, 4,
 MLXSW_ITEM_BUF_INDEXED(reg, sfn, rec_mac, MLXSW_REG_SFN_BASE_LEN, 6,
 		       MLXSW_REG_SFN_REC_LEN, 0x02);
 
-/* reg_sfd_mac_sub_port
+/* reg_sfn_mac_sub_port
  * VEPA channel on the local port.
  * 0 if multichannel VEPA is not enabled.
  * Access: RO
@@ -482,14 +482,14 @@ MLXSW_ITEM_BUF_INDEXED(reg, sfn, rec_mac, MLXSW_REG_SFN_BASE_LEN, 6,
 MLXSW_ITEM32_INDEXED(reg, sfn, mac_sub_port, MLXSW_REG_SFN_BASE_LEN, 16, 8,
 		     MLXSW_REG_SFN_REC_LEN, 0x08, false);
 
-/* reg_sfd_mac_fid
+/* reg_sfn_mac_fid
  * Filtering identifier.
  * Access: RO
  */
 MLXSW_ITEM32_INDEXED(reg, sfn, mac_fid, MLXSW_REG_SFN_BASE_LEN, 0, 16,
 		     MLXSW_REG_SFN_REC_LEN, 0x08, false);
 
-/* reg_sfd_mac_system_port
+/* reg_sfn_mac_system_port
  * Unique port identifier for the final destination of the packet.
  * Access: RO
  */
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 6e9906d8d149..3be4a2355ead 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1227,6 +1227,7 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 	mlxsw_sp_port->local_port = local_port;
 	mlxsw_sp_port->learning = 1;
 	mlxsw_sp_port->learning_sync = 1;
+	mlxsw_sp_port->uc_flood = 1;
 	mlxsw_sp_port->pvid = 1;
 
 	mlxsw_sp_port->pcpu_stats =
@@ -1899,12 +1900,12 @@ static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
 				if (err)
 					netdev_err(dev, "Failed to join bridge\n");
 				mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
-				mlxsw_sp_port->bridged = true;
+				mlxsw_sp_port->bridged = 1;
 			} else {
 				err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
 				if (err)
 					netdev_err(dev, "Failed to leave bridge\n");
-				mlxsw_sp_port->bridged = false;
+				mlxsw_sp_port->bridged = 0;
 				mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
 			}
 		}
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index fc0074902ab5..4365c8bccc6d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -84,10 +84,11 @@ struct mlxsw_sp_port {
 	struct mlxsw_sp *mlxsw_sp;
 	u8 local_port;
 	u8 stp_state;
-	u8 learning:1;
-	u8 learning_sync:1;
+	u8 learning:1,
+	   learning_sync:1,
+	   uc_flood:1,
+	   bridged:1;
 	u16 pvid;
-	bool bridged;
 	/* 802.1Q bridge VLANs */
 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 	/* VLAN interfaces */
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index c39b7a188726..617fb22b5d81 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -66,7 +66,8 @@ static int mlxsw_sp_port_attr_get(struct net_device *dev,
 	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 		attr->u.brport_flags =
 			(mlxsw_sp_port->learning ? BR_LEARNING : 0) |
-			(mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0);
+			(mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
+			(mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
 		break;
 	default:
 		return -EOPNOTSUPP;
@@ -123,15 +124,89 @@ static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 	return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
 }
 
+static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
+				     u16 fid_begin, u16 fid_end, bool set,
+				     bool only_uc)
+{
+	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+	u16 range = fid_end - fid_begin + 1;
+	char *sftr_pl;
+	int err;
+
+	sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
+	if (!sftr_pl)
+		return -ENOMEM;
+
+	mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, fid_begin,
+			    MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, range,
+			    mlxsw_sp_port->local_port, set);
+	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
+	if (err)
+		goto buffer_out;
+
+	/* Flooding control allows one to decide whether a given port will
+	 * flood unicast traffic for which there is no FDB entry.
+	 */
+	if (only_uc)
+		goto buffer_out;
+
+	mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, fid_begin,
+			    MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, range,
+			    mlxsw_sp_port->local_port, set);
+	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
+
+buffer_out:
+	kfree(sftr_pl);
+	return err;
+}
+
+static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
+				      bool set)
+{
+	struct net_device *dev = mlxsw_sp_port->dev;
+	u16 vid, last_visited_vid;
+	int err;
+
+	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
+		err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
+						true);
+		if (err) {
+			last_visited_vid = vid;
+			goto err_port_flood_set;
+		}
+	}
+
+	return 0;
+
+err_port_flood_set:
+	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
+		__mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
+	netdev_err(dev, "Failed to configure unicast flooding\n");
+	return err;
+}
+
 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 					   struct switchdev_trans *trans,
 					   unsigned long brport_flags)
 {
+	unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
+	bool set;
+	int err;
+
 	if (switchdev_trans_ph_prepare(trans))
 		return 0;
 
+	if ((uc_flood ^ brport_flags) & BR_FLOOD) {
+		set = mlxsw_sp_port->uc_flood ? false : true;
+		err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
+		if (err)
+			return err;
+	}
+
+	mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
 	mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
 	mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
+
 	return 0;
 }
 
@@ -150,9 +225,10 @@ static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 
 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 					    struct switchdev_trans *trans,
-					    unsigned long ageing_jiffies)
+					    unsigned long ageing_clock_t)
 {
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 	u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 
 	if (switchdev_trans_ph_prepare(trans))
@@ -247,40 +323,6 @@ static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
 	return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
 }
 
-static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
-				     u16 fid, bool set, bool only_uc)
-{
-	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
-	char *sftr_pl;
-	int err;
-
-	sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
-	if (!sftr_pl)
-		return -ENOMEM;
-
-	mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, fid,
-			    MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, 0,
-			    mlxsw_sp_port->local_port, set);
-	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
-	if (err)
-		goto buffer_out;
-
-	/* Flooding control allows one to decide whether a given port will
-	 * flood unicast traffic for which there is no FDB entry.
-	 */
-	if (only_uc)
-		goto buffer_out;
-
-	mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, fid,
-			    MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, 0,
-			    mlxsw_sp_port->local_port, set);
-	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
-
-buffer_out:
-	kfree(sftr_pl);
-	return err;
-}
-
 static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
 				  u16 vid_end)
 {
@@ -345,14 +387,13 @@ static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 			netdev_err(dev, "Failed to map FID=%d", vid);
 			return err;
 		}
+	}
 
-		err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, true,
-						false);
-		if (err) {
-			netdev_err(dev, "Failed to set flooding for FID=%d",
-				   vid);
-			return err;
-		}
+	err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
+					true, false);
+	if (err) {
+		netdev_err(dev, "Failed to configure flooding\n");
+		return err;
 	}
 
 	for (vid = vid_begin; vid <= vid_end;
@@ -530,15 +571,14 @@ static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (init)
 		goto out;
 
-	for (vid = vid_begin; vid <= vid_end; vid++) {
-		err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, false,
-						false);
-		if (err) {
-			netdev_err(dev, "Failed to clear flooding for FID=%d",
-				   vid);
-			return err;
-		}
+	err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
+					false, false);
+	if (err) {
+		netdev_err(dev, "Failed to clear flooding\n");
+		return err;
+	}
 
+	for (vid = vid_begin; vid <= vid_end; vid++) {
 		/* Remove FID mapping in case of Virtual mode */
 		err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
 		if (err) {
@@ -692,7 +732,7 @@ static int mlxsw_sp_port_obj_dump(struct net_device *dev,
 	return err;
 }
 
-const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
+static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
 	.switchdev_port_attr_get	= mlxsw_sp_port_attr_get,
 	.switchdev_port_attr_set	= mlxsw_sp_port_attr_set,
 	.switchdev_port_obj_add		= mlxsw_sp_port_obj_add,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c
index 50e29c4879db..d85960cfb694 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c
@@ -1147,7 +1147,7 @@ static void mlxsw_sx_pude_event_func(const struct mlxsw_reg_info *reg,
 	}
 
 	status = mlxsw_reg_pude_oper_status_get(pude_pl);
-	if (MLXSW_PORT_OPER_STATUS_UP == status) {
+	if (status == MLXSW_PORT_OPER_STATUS_UP) {
 		netdev_info(mlxsw_sx_port->dev, "link up\n");
 		netif_carrier_on(mlxsw_sx_port->dev);
 	} else {
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 1eb76956b439..8950d39af341 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -746,7 +746,7 @@ int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 		.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
 	};
 	u16 mode = BRIDGE_MODE_UNDEF;
-	u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
+	u32 mask = BR_LEARNING | BR_LEARNING_SYNC | BR_FLOOD;
 	int err;
 
 	err = switchdev_port_attr_get(dev, &attr);
@@ -817,6 +817,9 @@ static int switchdev_port_br_setlink_protinfo(struct net_device *dev,
 			err = switchdev_port_br_setflag(dev, attr,
 							BR_LEARNING_SYNC);
 			break;
+		case IFLA_BRPORT_UNICAST_FLOOD:
+			err = switchdev_port_br_setflag(dev, attr, BR_FLOOD);
+			break;
 		default:
 			err = -EOPNOTSUPP;
 			break;