[PATCH net-next 0/2] Remove unused variables

[PATCH net-next 0/2] Remove unused variables

[Florian Fainelli]

Hi David,

This removes unused variables from mlxsw and ethsw after the recent
removal of SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, build scripts are now
fixed to take care of those warnings :).

Thank you!

Florian Fainelli (2):
  mlxsw: spectrum_switchdev: Remove unused variables
  staging: fsl-dpaa2: ethsw: Remove unused port_priv variable

 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 3 ---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c                  | 2 --
 2 files changed, 5 deletions(-)

-- 
2.17.1

[PATCH net-next 1/2] mlxsw: spectrum_switchdev: Remove unused variables

[Florian Fainelli]

After 1ecb195753a1 ("mlxsw: spectrum_switchdev: Remove getting
PORT_BRIDGE_FLAGS") we are not accessing any driver private data
structure, so the mlxsw_sp_port and mlxsw_sp variables are unused.

Fixes: 1ecb195753a1 ("mlxsw: spectrum_switchdev: Remove getting PORT_BRIDGE_FLAGS")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 4c5780f8f4b2..1f492b7dbea8 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -434,9 +434,6 @@ static void mlxsw_sp_bridge_vlan_put(struct mlxsw_sp_bridge_vlan *bridge_vlan)
 static int mlxsw_sp_port_attr_get(struct net_device *dev,
 				  struct switchdev_attr *attr)
 {
-	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
-	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
-
 	switch (attr->id) {
 	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
 		attr->u.brport_flags_support = BR_LEARNING | BR_FLOOD |
-- 
2.17.1

[PATCH net-next 2/2] staging: fsl-dpaa2: ethsw: Remove unused port_priv variable

[Florian Fainelli]

After 1b8b589d9103 ("staging: fsl-dpaa2: ethsw: Remove getting
PORT_BRIDGE_FLAGS") we are not accessing any driver private data
anymore, remove port_priv which is unused.

Fixes: 1b8b589d9103 ("staging: fsl-dpaa2: ethsw: Remove getting PORT_BRIDGE_FLAGS")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index e5a14c7c777f..1b3943b71254 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -643,8 +643,6 @@ static void ethsw_teardown_irqs(struct fsl_mc_device *sw_dev)
 static int swdev_port_attr_get(struct net_device *netdev,
 			       struct switchdev_attr *attr)
 {
-	struct ethsw_port_priv *port_priv = netdev_priv(netdev);
-
 	switch (attr->id) {
 	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
 		attr->u.brport_flags_support = BR_LEARNING | BR_FLOOD;
-- 
2.17.1

[PATCH 01/13] net: bridge: Allow deying multicast snooping toggling

[Florian Fainelli]

Some Ethernet switches might not be able to support disabling multicast
flooding globally when e.g: several bridges span the same physical
device.

Introduce a new switchdev attribute:
SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED_SUPPORT which is first queried as a
blocking call using switchdev_port_attr_get() and then allow
br_mc_disabled_update() to propagate that return value all the way down
to user-space.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 include/net/switchdev.h   |  2 ++
 net/bridge/br_multicast.c | 36 +++++++++++++++++++++++++++---------
 2 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 5e87b54c5dc5..4531209e6a6a 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -50,6 +50,7 @@ enum switchdev_attr_id {
 	SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
 	SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
 	SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
+	SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED_SUPPORT,
 	SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
 };
 
@@ -67,6 +68,7 @@ struct switchdev_attr {
 		clock_t ageing_time;			/* BRIDGE_AGEING_TIME */
 		bool vlan_filtering;			/* BRIDGE_VLAN_FILTERING */
 		bool mc_disabled;			/* MC_DISABLED */
+		bool mc_disabled_support;		/* MC_DISABLED_SUPPORT */
 	} u;
 };
 
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 4a048fd1cbea..97cc5f3ad20a 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -815,20 +815,31 @@ static void br_ip6_multicast_port_query_expired(struct timer_list *t)
 }
 #endif
 
-static void br_mc_disabled_update(struct net_device *dev, bool value)
+static int br_mc_disabled_update(struct net_device *dev, bool value)
 {
 	struct switchdev_attr attr = {
 		.orig_dev = dev,
-		.id = SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
-		.flags = SWITCHDEV_F_DEFER,
-		.u.mc_disabled = !value,
+		.id = SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED_SUPPORT,
+		.flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
+		.u.mc_disabled_support = !value,
 	};
+	int err;
+
+	err = switchdev_port_attr_get(dev, &attr);
+	if (err)
+		return err;
 
-	switchdev_port_attr_set(dev, &attr);
+	attr.id = SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED;
+	attr.flags |= SWITCHDEV_F_DEFER;
+	attr.u.mc_disabled = !value;
+
+	return switchdev_port_attr_set(dev, &attr);
 }
 
 int br_multicast_add_port(struct net_bridge_port *port)
 {
+	int ret;
+
 	port->multicast_router = MDB_RTR_TYPE_TEMP_QUERY;
 
 	timer_setup(&port->multicast_router_timer,
@@ -839,8 +850,11 @@ int br_multicast_add_port(struct net_bridge_port *port)
 	timer_setup(&port->ip6_own_query.timer,
 		    br_ip6_multicast_port_query_expired, 0);
 #endif
-	br_mc_disabled_update(port->dev,
-			      br_opt_get(port->br, BROPT_MULTICAST_ENABLED));
+	ret = br_mc_disabled_update(port->dev,
+				    br_opt_get(port->br,
+					       BROPT_MULTICAST_ENABLED));
+	if (ret)
+		return ret;
 
 	port->mcast_stats = netdev_alloc_pcpu_stats(struct bridge_mcast_stats);
 	if (!port->mcast_stats)
@@ -2057,12 +2071,16 @@ static void br_multicast_start_querier(struct net_bridge *br,
 int br_multicast_toggle(struct net_bridge *br, unsigned long val)
 {
 	struct net_bridge_port *port;
+	int err = 0;
 
 	spin_lock_bh(&br->multicast_lock);
 	if (!!br_opt_get(br, BROPT_MULTICAST_ENABLED) == !!val)
 		goto unlock;
 
-	br_mc_disabled_update(br->dev, val);
+	err = br_mc_disabled_update(br->dev, val);
+	if (err)
+		goto unlock;
+
 	br_opt_toggle(br, BROPT_MULTICAST_ENABLED, !!val);
 	if (!br_opt_get(br, BROPT_MULTICAST_ENABLED)) {
 		br_multicast_leave_snoopers(br);
@@ -2079,7 +2097,7 @@ int br_multicast_toggle(struct net_bridge *br, unsigned long val)
 unlock:
 	spin_unlock_bh(&br->multicast_lock);
 
-	return 0;
+	return err;
 }
 
 bool br_multicast_enabled(const struct net_device *dev)
-- 
2.17.1


From 4de219f5de35f83f6048e2045244cfab6dd7f58a Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Mon, 10 Dec 2018 16:11:56 -0800
Subject: [PATCH 02/13] net: dsa: b53: Fix default VLAN ID

We were not consistent in how the default VID of a given port was
defined, b53_br_leave() would make sure the VLAN ID would be either 0/1
depending on the switch generation, but b53_configure_vlan(), which is
the default configuration would unconditionally set it to 1. The correct
value is 1 for 5325/5365 series and 0 otherwise. To avoid repeating that
mistake ever again, introduce a helper function: b53_default_pvid() to
factor that out.

Fixes: 967dd82ffc52 ("net: dsa: b53: Add support for Broadcom RoboSwitch")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 0e4bbdcc614f..964a9ec4652a 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -632,15 +632,25 @@ static void b53_enable_mib(struct b53_device *dev)
 	b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
 }
 
+static u16 b53_default_pvid(struct b53_device *dev)
+{
+	if (is5325(dev) || is5365(dev))
+		return 1;
+	else
+		return 0;
+}
+
 int b53_configure_vlan(struct dsa_switch *ds)
 {
 	struct b53_device *dev = ds->priv;
 	struct b53_vlan vl = { 0 };
-	int i;
+	int i, def_vid;
+
+	def_vid = b53_default_pvid(dev);
 
 	/* clear all vlan entries */
 	if (is5325(dev) || is5365(dev)) {
-		for (i = 1; i < dev->num_vlans; i++)
+		for (i = def_vid; i < dev->num_vlans; i++)
 			b53_set_vlan_entry(dev, i, &vl);
 	} else {
 		b53_do_vlan_op(dev, VTA_CMD_CLEAR);
@@ -650,7 +660,7 @@ int b53_configure_vlan(struct dsa_switch *ds)
 
 	b53_for_each_port(dev, i)
 		b53_write16(dev, B53_VLAN_PAGE,
-			    B53_VLAN_PORT_DEF_TAG(i), 1);
+			    B53_VLAN_PORT_DEF_TAG(i), def_vid);
 
 	if (!is5325(dev) && !is5365(dev))
 		b53_set_jumbo(dev, dev->enable_jumbo, false);
@@ -1326,12 +1336,8 @@ int b53_vlan_del(struct dsa_switch *ds, int port,
 
 		vl->members &= ~BIT(port);
 
-		if (pvid == vid) {
-			if (is5325(dev) || is5365(dev))
-				pvid = 1;
-			else
-				pvid = 0;
-		}
+		if (pvid == vid)
+			pvid = b53_default_pvid(dev);
 
 		if (untagged && !dsa_is_cpu_port(ds, port))
 			vl->untag &= ~(BIT(port));
@@ -1644,10 +1650,7 @@ void b53_br_leave(struct dsa_switch *ds, int port, struct net_device *br)
 	b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
 	dev->ports[port].vlan_ctl_mask = pvlan;
 
-	if (is5325(dev) || is5365(dev))
-		pvid = 1;
-	else
-		pvid = 0;
+	pvid = b53_default_pvid(dev);
 
 	/* Make this port join all VLANs without VLAN entries */
 	if (is58xx(dev)) {
-- 
2.17.1


From f383f69ad8a0da53f4f2d634d4dd4f34babf6d52 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Mon, 10 Dec 2018 13:55:55 -0800
Subject: [PATCH 03/13] net: dsa: b53: Properly account for VLAN filtering

VLAN filtering can be built into the kernel, and also dynamically turned
on/off through the bridge master device. Allow re-configuring the switch
appropriately to account for that by deciding whether VLAN table
(v_table) misses should lead to a drop or forward.

Fixes: a2482d2ce349 ("net: dsa: b53: Plug in VLAN support")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 59 +++++++++++++++++++++++++++++---
 drivers/net/dsa/b53/b53_priv.h   |  3 ++
 2 files changed, 57 insertions(+), 5 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 964a9ec4652a..2fef4c564420 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -344,7 +344,8 @@ static void b53_set_forwarding(struct b53_device *dev, int enable)
 	b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
 }
 
-static void b53_enable_vlan(struct b53_device *dev, bool enable)
+static void b53_enable_vlan(struct b53_device *dev, bool enable,
+			    bool enable_filtering)
 {
 	u8 mgmt, vc0, vc1, vc4 = 0, vc5;
 
@@ -369,8 +370,13 @@ static void b53_enable_vlan(struct b53_device *dev, bool enable)
 		vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
 		vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
 		vc4 &= ~VC4_ING_VID_CHECK_MASK;
-		vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
-		vc5 |= VC5_DROP_VTABLE_MISS;
+		if (enable_filtering) {
+			vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
+			vc5 |= VC5_DROP_VTABLE_MISS;
+		} else {
+			vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
+			vc5 &= ~VC5_DROP_VTABLE_MISS;
+		}
 
 		if (is5325(dev))
 			vc0 &= ~VC0_RESERVED_1;
@@ -420,6 +426,9 @@ static void b53_enable_vlan(struct b53_device *dev, bool enable)
 	}
 
 	b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
+
+	dev->vlan_enabled = enable;
+	dev->vlan_filtering_enabled = enable_filtering;
 }
 
 static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
@@ -656,7 +665,7 @@ int b53_configure_vlan(struct dsa_switch *ds)
 		b53_do_vlan_op(dev, VTA_CMD_CLEAR);
 	}
 
-	b53_enable_vlan(dev, false);
+	b53_enable_vlan(dev, false, dev->vlan_filtering_enabled);
 
 	b53_for_each_port(dev, i)
 		b53_write16(dev, B53_VLAN_PAGE,
@@ -1265,6 +1274,46 @@ EXPORT_SYMBOL(b53_phylink_mac_link_up);
 
 int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering)
 {
+	struct b53_device *dev = ds->priv;
+	struct net_device *bridge_dev;
+	unsigned int i;
+	u16 pvid, new_pvid;
+
+	/* Handle the case were multiple bridges span the same switch device
+	 * and one of them has a different setting than what is being requested
+	 * which would be breaking filtering semantics for any of the other
+	 * bridge devices.
+	 */
+	b53_for_each_port(dev, i) {
+		bridge_dev = dsa_to_port(ds, i)->bridge_dev;
+		if (bridge_dev &&
+		    bridge_dev != dsa_to_port(ds, port)->bridge_dev &&
+		    br_vlan_enabled(bridge_dev) != vlan_filtering) {
+			netdev_err(bridge_dev,
+				   "VLAN filtering is global to the switch!\n");
+			return -EINVAL;
+		}
+	}
+
+	b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
+	new_pvid = pvid;
+	if (dev->vlan_filtering_enabled && !vlan_filtering) {
+		/* Filtering is currently enabled, use the default PVID since
+		 * the bridge does not expect tagging anymore
+		 */
+		dev->ports[port].pvid = pvid;
+		new_pvid = b53_default_pvid(dev);
+	} else if (!dev->vlan_filtering_enabled && vlan_filtering) {
+		/* Filtering is currently disabled, restore the previous PVID */
+		new_pvid = dev->ports[port].pvid;
+	}
+
+	if (pvid != new_pvid)
+		b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
+			    new_pvid);
+
+	b53_enable_vlan(dev, dev->vlan_enabled, vlan_filtering);
+
 	return 0;
 }
 EXPORT_SYMBOL(b53_vlan_filtering);
@@ -1280,7 +1329,7 @@ int b53_vlan_prepare(struct dsa_switch *ds, int port,
 	if (vlan->vid_end > dev->num_vlans)
 		return -ERANGE;
 
-	b53_enable_vlan(dev, true);
+	b53_enable_vlan(dev, true, dev->vlan_filtering_enabled);
 
 	return 0;
 }
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index ec796482792d..4dc7ee38b258 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -91,6 +91,7 @@ enum {
 struct b53_port {
 	u16		vlan_ctl_mask;
 	struct ethtool_eee eee;
+	u16		pvid;
 };
 
 struct b53_vlan {
@@ -137,6 +138,8 @@ struct b53_device {
 
 	unsigned int num_vlans;
 	struct b53_vlan *vlans;
+	bool vlan_enabled;
+	bool vlan_filtering_enabled;
 	unsigned int num_ports;
 	struct b53_port *ports;
 };
-- 
2.17.1


From adf163ed43eed53888acd5f76e84e0d0db344b4c Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Wed, 12 Dec 2018 12:23:59 -0800
Subject: [PATCH 04/13] net: systemport: Fix reception of BPDUs

SYSTEMPORT has its RXCHK parser block that attempts to validate the
packet structures, unfortunately setting the L2 header check bit will
cause Bridge PDUs (BPDUs) to be incorrectly rejected because they look
like LLC/SNAP packets with a non-IPv4 or non-IPv6 Ethernet Type.

Fixes: 4e8aedfe78c7 ("net: systemport: Turn on offloads by default")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/ethernet/broadcom/bcmsysport.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 28c9b0bdf2f6..bc3ac369cbe3 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -134,6 +134,10 @@ static void bcm_sysport_set_rx_csum(struct net_device *dev,
 
 	priv->rx_chk_en = !!(wanted & NETIF_F_RXCSUM);
 	reg = rxchk_readl(priv, RXCHK_CONTROL);
+	/* Clear L2 header checks, which would prevent BPDUs
+	 * from being received.
+	 */
+	reg &= ~RXCHK_L2_HDR_DIS;
 	if (priv->rx_chk_en)
 		reg |= RXCHK_EN;
 	else
-- 
2.17.1


From 149369d20cd22fe66f8b9a499df32c20e466a9c8 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Wed, 5 Dec 2018 17:16:51 -0800
Subject: [PATCH 05/13] net: dsa: b53: Define registers for IGMP snooping

Define all necessary registers in order to implement IGMP snooping later
on, which are mostly comprised of the high-level protocol register
control definitions.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/b53/b53_regs.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h
index 2a9f421680aa..b4aecd4552b6 100644
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -115,6 +115,8 @@
 #define B53_UC_FLOOD_MASK		0x32
 #define B53_MC_FLOOD_MASK		0x34
 #define B53_IPMC_FLOOD_MASK		0x36
+#define B53_DIS_LEARN			0x3c
+#define B53_SFT_LRN_CTRL		0x3e
 
 /*
  * Override Ports 0-7 State on devices with xMII interfaces (8 bit)
@@ -253,6 +255,26 @@
 /* Revision ID register (8 bit) */
 #define B53_REV_ID			0x40
 
+/* High-level Protocol Control Register (32 bit) */
+#define B53_HL_PRTC_CTRL		0x50
+#define  HL_PRTC_ARP_EN			(1 << 0)
+#define  HL_PRTC_RARP_EN		(1 << 1)
+#define  HL_PRTC_DHCP_EN		(1 << 2)
+#define  HL_PRTC_ICMPV4_EN		(1 << 3)
+#define  HL_PRTC_ICMPV6_EN		(1 << 4)
+#define  HL_PRTC_ICMPV6_FWD_MODE	(1 << 5)
+#define  HL_PRTC_IGMP_DIP_EN		(1 << 8)
+#define  HL_PRTC_IGMP_RPTLVE_EN		(1 << 9)
+#define  HL_PRTC_IGMP_RPTVLE_FWD_MODE	(1 << 10)
+#define  HL_PRTC_IGMP_QRY_EN		(1 << 11)
+#define  HL_PRTC_IGMP_QRY_FWD_MODE	(1 << 12)
+#define  HL_PRTC_IGMP_UKN_EN		(1 << 13)
+#define  HL_PRTC_IGMP_UKN_FWD_MODE	(1 << 14)
+#define  HL_PRTC_MLD_RPTDONE_EN		(1 << 15)
+#define  HL_PRTC_MLD_RPTDONE_FWD_MODE	(1 << 16)
+#define  HL_PRTC_MLD_QRY_EN		(1 << 17)
+#define  HL_PRTC_MLD_QRY_FWD_MODE	(1 << 18)
+
 /* Broadcom header RX control (16 bit) */
 #define B53_BRCM_HDR_RX_DIS		0x60
 
-- 
2.17.1


From b9676fa661680ce69216f59afc3f90c5c5250302 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Thu, 6 Dec 2018 12:13:40 -0800
Subject: [PATCH 06/13] net: dsa: b53: Add support for MDB

In preparation for supporting IGMP snooping with or without the use of
a bridge, add support within b53_common.c to program the ARL entries for
multicast operations. The key difference is that a multicast ARL entry
is comprised of a bitmask of enabled ports, instead of a port number.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 62 ++++++++++++++++++++++++++++++--
 drivers/net/dsa/b53/b53_priv.h   |  8 ++++-
 2 files changed, 67 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 2fef4c564420..6c894ad4768a 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1503,11 +1503,25 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 		idx = 1;
 	}
 
-	memset(&ent, 0, sizeof(ent));
-	ent.port = port;
+	/* For multicast address, the port is a bitmask and the validity
+	 * is determined by having at least one port being still active
+	 */
+	if (!is_multicast_ether_addr(addr)) {
+		ent.port = port;
+		ent.is_valid = is_valid;
+	} else {
+		if (is_valid)
+			ent.port |= BIT(port);
+		else
+			ent.port &= ~BIT(port);
+
+		ent.is_valid = !!(ent.port);
+	}
+
 	ent.is_valid = is_valid;
 	ent.vid = vid;
 	ent.is_static = true;
+	ent.is_age = false;
 	memcpy(ent.mac, addr, ETH_ALEN);
 	b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
 
@@ -1626,6 +1640,47 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 }
 EXPORT_SYMBOL(b53_fdb_dump);
 
+int b53_mdb_prepare(struct dsa_switch *ds, int port,
+		    const struct switchdev_obj_port_mdb *mdb)
+{
+	struct b53_device *priv = ds->priv;
+
+	/* 5325 and 5365 require some more massaging, but could
+	 * be supported eventually
+	 */
+	if (is5325(priv) || is5365(priv))
+		return -EOPNOTSUPP;
+
+	return 0;
+}
+EXPORT_SYMBOL(b53_mdb_prepare);
+
+void b53_mdb_add(struct dsa_switch *ds, int port,
+		 const struct switchdev_obj_port_mdb *mdb)
+{
+	struct b53_device *priv = ds->priv;
+	int ret;
+
+	ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
+	if (ret)
+		dev_err(ds->dev, "failed to add MDB entry\n");
+}
+EXPORT_SYMBOL(b53_mdb_add);
+
+int b53_mdb_del(struct dsa_switch *ds, int port,
+		const struct switchdev_obj_port_mdb *mdb)
+{
+	struct b53_device *priv = ds->priv;
+	int ret;
+
+	ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, false);
+	if (ret)
+		dev_err(ds->dev, "failed to delete MDB entry\n");
+
+	return ret;
+}
+EXPORT_SYMBOL(b53_mdb_del);
+
 int b53_br_join(struct dsa_switch *ds, int port, struct net_device *br)
 {
 	struct b53_device *dev = ds->priv;
@@ -1969,6 +2024,9 @@ static const struct dsa_switch_ops b53_switch_ops = {
 	.port_fdb_del		= b53_fdb_del,
 	.port_mirror_add	= b53_mirror_add,
 	.port_mirror_del	= b53_mirror_del,
+	.port_mdb_prepare	= b53_mdb_prepare,
+	.port_mdb_add		= b53_mdb_add,
+	.port_mdb_del		= b53_mdb_del,
 };
 
 struct b53_chip_data {
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 4dc7ee38b258..620638ff9338 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -251,7 +251,7 @@ b53_build_op(write48, u64);
 b53_build_op(write64, u64);
 
 struct b53_arl_entry {
-	u8 port;
+	u16 port;
 	u8 mac[ETH_ALEN];
 	u16 vid;
 	u8 is_valid:1;
@@ -350,6 +350,12 @@ int b53_fdb_del(struct dsa_switch *ds, int port,
 		const unsigned char *addr, u16 vid);
 int b53_fdb_dump(struct dsa_switch *ds, int port,
 		 dsa_fdb_dump_cb_t *cb, void *data);
+int b53_mdb_prepare(struct dsa_switch *ds, int port,
+		    const struct switchdev_obj_port_mdb *mdb);
+void b53_mdb_add(struct dsa_switch *ds, int port,
+		 const struct switchdev_obj_port_mdb *mdb);
+int b53_mdb_del(struct dsa_switch *ds, int port,
+		const struct switchdev_obj_port_mdb *mdb);
 int b53_mirror_add(struct dsa_switch *ds, int port,
 		   struct dsa_mall_mirror_tc_entry *mirror, bool ingress);
 enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port);
-- 
2.17.1


From 2bb2f9968f6fa9c1593f338c05e696e48103b2a8 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Thu, 6 Dec 2018 12:29:16 -0800
Subject: [PATCH 07/13] net: dsa: Add ability to program multicast filter for
 CPU port

When the switch ports operate as individual network devices, the switch
driver might have configured the switch to flood multicast all the way
to the CPU port. This is really undesireable as it can lead to receiving
a lot of unwanted traffic that the network stack needs to filter in
software.

For each valid multicast address, program it into the switch's MDB only
when the host is interested in receiving such traffic, e.g: running an
multicast application.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 net/dsa/slave.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 2e5e7c04821b..f565b6a595d2 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -68,6 +68,41 @@ static int dsa_slave_get_iflink(const struct net_device *dev)
 	return dsa_slave_to_master(dev)->ifindex;
 }
 
+static int dsa_slave_sync(struct net_device *dev, const unsigned char *addr)
+{
+	struct switchdev_obj_port_mdb mdb = {
+		.obj.id = SWITCHDEV_OBJ_ID_HOST_MDB,
+		.obj.flags = SWITCHDEV_F_DEFER,
+	};
+
+	ether_addr_copy(mdb.addr, addr);
+
+	return switchdev_port_obj_add(dev, &mdb.obj, NULL);
+}
+
+static int dsa_slave_unsync(struct net_device *dev, const unsigned char *addr)
+{
+	struct switchdev_obj_port_mdb mdb = {
+		.obj.id = SWITCHDEV_OBJ_ID_HOST_MDB,
+		.obj.flags = SWITCHDEV_F_DEFER,
+	};
+
+	ether_addr_copy(mdb.addr, addr);
+
+	return switchdev_port_obj_del(dev, &mdb.obj);
+}
+
+static int dsa_slave_mc_sync(struct net_device *dev)
+{
+	return __hw_addr_sync_dev(&dev->mc, dev, dsa_slave_sync,
+				  dsa_slave_unsync);
+}
+
+static void dsa_slave_mc_unsync(struct net_device *dev)
+{
+	__hw_addr_unsync_dev(&dev->mc, dev, dsa_slave_unsync);
+}
+
 static int dsa_slave_open(struct net_device *dev)
 {
 	struct net_device *master = dsa_slave_to_master(dev);
@@ -126,6 +161,8 @@ static int dsa_slave_close(struct net_device *dev)
 
 	dev_mc_unsync(master, dev);
 	dev_uc_unsync(master, dev);
+	dsa_slave_mc_unsync(dev);
+
 	if (dev->flags & IFF_ALLMULTI)
 		dev_set_allmulti(master, -1);
 	if (dev->flags & IFF_PROMISC)
@@ -153,7 +190,17 @@ static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
 static void dsa_slave_set_rx_mode(struct net_device *dev)
 {
 	struct net_device *master = dsa_slave_to_master(dev);
+	struct dsa_port *dp = dsa_slave_to_port(dev);
+
+	/* If the port is bridged, the bridge takes care of sending
+	 * SWITCHDEV_OBJ_ID_HOST_MDB to program the host's MC filter
+	 */
+	if (netdev_mc_empty(dev) || dp->bridge_dev)
+		goto out;
 
+	if (dsa_slave_mc_sync(dev))
+		netdev_err(dev, "failed to synchronize MC addresses\n");
+out:
 	dev_mc_sync(master, dev);
 	dev_uc_sync(master, dev);
 }
@@ -1405,6 +1452,10 @@ static int dsa_slave_changeupper(struct net_device *dev,
 
 	if (netif_is_bridge_master(info->upper_dev)) {
 		if (info->linking) {
+			/* Remove existing MC addresses that might have been
+			 * programmed
+			 */
+			dsa_slave_mc_unsync(dev);
 			err = dsa_port_bridge_join(dp, info->upper_dev);
 			err = notifier_from_errno(err);
 		} else {
-- 
2.17.1


From a18cd91ea44f55b852cd4c771da0abb014ef50ab Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Mon, 10 Dec 2018 15:15:17 -0800
Subject: [PATCH 08/13] net: dsa: Add ndo_vlan_rx_{add,kill}_vid implementation

In order to properly support VLAN filtering being enabled/disabled on a
bridge, while having other ports being non bridge port members, we need
to support the ndo_vlan_rx_{add,kill}_vid callbacks in order to make
sure the non-bridge ports can continue receiving VLAN tags, even when
the switch is globally configured to do ingress/egress VID checking.

We don't allow configuring VLAN devices on a bridge port member though,
since the bridge with VLAN awareness should be taking care of that, if
needed.

Since we can call dsa_port_vlan_{add,del} with a bridge_dev pointer
NULL, we now need to check that in these two functions.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 net/dsa/port.c  | 10 ++++++++--
 net/dsa/slave.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 60 insertions(+), 3 deletions(-)

diff --git a/net/dsa/port.c b/net/dsa/port.c
index 2d7e01b23572..a18d8409acf3 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -252,7 +252,10 @@ int dsa_port_vlan_add(struct dsa_port *dp,
 		.vlan = vlan,
 	};
 
-	if (br_vlan_enabled(dp->bridge_dev))
+	/* Can be called from dsa_slave_port_obj_add() or
+	 * dsa_slave_vlan_rx_add_vid()
+	 */
+	if (!dp->bridge_dev || br_vlan_enabled(dp->bridge_dev))
 		return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info);
 
 	return 0;
@@ -270,7 +273,10 @@ int dsa_port_vlan_del(struct dsa_port *dp,
 	if (netif_is_bridge_master(vlan->obj.orig_dev))
 		return -EOPNOTSUPP;
 
-	if (br_vlan_enabled(dp->bridge_dev))
+	/* Can be called from dsa_slave_port_obj_del() or
+	 * dsa_slave_vlan_rx_kill_vid()
+	 */
+	if (!dp->bridge_dev || br_vlan_enabled(dp->bridge_dev))
 		return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
 
 	return 0;
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index f565b6a595d2..cc4fb8725fac 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1037,6 +1037,54 @@ static int dsa_slave_get_ts_info(struct net_device *dev,
 	return ds->ops->get_ts_info(ds, p->dp->index, ts);
 }
 
+static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
+				     u16 vid)
+{
+	struct dsa_port *dp = dsa_slave_to_port(dev);
+	struct switchdev_obj_port_vlan vlan = { };
+	int ret = 0;
+
+	/* If the port is bridged and the bridge is VLAN aware, let the bridge
+	 * manage VLANs
+	 */
+	if (dp->bridge_dev && br_vlan_enabled(dp->bridge_dev))
+		return -EINVAL;
+
+	/* This API only allows programming tagged, non-PVID VIDs */
+	vlan.vid_begin = vid;
+	vlan.vid_end = vid;
+
+	ret = dsa_port_vlan_add(dp, &vlan, NULL);
+	if (ret == -EOPNOTSUPP)
+		ret = 0;
+
+	return ret;
+}
+
+static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
+				      u16 vid)
+{
+	struct dsa_port *dp = dsa_slave_to_port(dev);
+	struct switchdev_obj_port_vlan vlan = { };
+	int ret = 0;
+
+	/* If the port is bridged and the bridge is VLAN aware, let the bridge
+	 * manage VLANs
+	 */
+	if (dp->bridge_dev && br_vlan_enabled(dp->bridge_dev))
+		return -EINVAL;
+
+	/* This API only allows programming tagged, non-PVID VIDs */
+	vlan.vid_begin = vid;
+	vlan.vid_end = vid;
+
+	ret = dsa_port_vlan_del(dp, &vlan);
+	if (ret == -EOPNOTSUPP)
+		ret = 0;
+
+	return ret;
+}
+
 static const struct ethtool_ops dsa_slave_ethtool_ops = {
 	.get_drvinfo		= dsa_slave_get_drvinfo,
 	.get_regs_len		= dsa_slave_get_regs_len,
@@ -1102,6 +1150,8 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
 	.ndo_setup_tc		= dsa_slave_setup_tc,
 	.ndo_get_stats64	= dsa_slave_get_stats64,
 	.ndo_get_port_parent_id	= dsa_slave_get_port_parent_id,
+	.ndo_vlan_rx_add_vid	= dsa_slave_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid	= dsa_slave_vlan_rx_kill_vid,
 };
 
 static const struct switchdev_ops dsa_slave_switchdev_ops = {
@@ -1362,7 +1412,8 @@ int dsa_slave_create(struct dsa_port *port)
 	if (slave_dev == NULL)
 		return -ENOMEM;
 
-	slave_dev->features = master->vlan_features | NETIF_F_HW_TC;
+	slave_dev->features = master->vlan_features | NETIF_F_HW_TC |
+				NETIF_F_HW_VLAN_CTAG_FILTER;
 	slave_dev->hw_features |= NETIF_F_HW_TC;
 	slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
 	eth_hw_addr_inherit(slave_dev, master);
-- 
2.17.1


From 2d4c257f1b9fd0d1dc2af49c50ebc215c2b561ee Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Mon, 7 Jan 2019 15:21:34 -0800
Subject: [PATCH 09/13] net: dsa: Make VLAN filtering use DSA notifiers

In preparation for allowing for global checks that would apply to the
entire switch and not just on a per-port basis, make the VLAN filtering
attribute follow other switchdev attributes/objects and make it use the
DSA notifier infrastructure.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 net/dsa/dsa_priv.h | 11 ++++++++++-
 net/dsa/port.c     | 17 +++++++----------
 net/dsa/switch.c   | 29 +++++++++++++++++++++++++++++
 3 files changed, 46 insertions(+), 11 deletions(-)

diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 1f4972dab9f2..1e3db5f2a699 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -26,6 +26,7 @@ enum {
 	DSA_NOTIFIER_MDB_DEL,
 	DSA_NOTIFIER_VLAN_ADD,
 	DSA_NOTIFIER_VLAN_DEL,
+	DSA_NOTIFIER_VLAN_FILTERING,
 };
 
 /* DSA_NOTIFIER_AGEING_TIME */
@@ -57,7 +58,7 @@ struct dsa_notifier_mdb_info {
 	int port;
 };
 
-/* DSA_NOTIFIER_VLAN_* */
+/* DSA_NOTIFIER_VLAN_{ADD,DEL} */
 struct dsa_notifier_vlan_info {
 	const struct switchdev_obj_port_vlan *vlan;
 	struct switchdev_trans *trans;
@@ -65,6 +66,14 @@ struct dsa_notifier_vlan_info {
 	int port;
 };
 
+/* DSA_NOTIFIER_VLAN_FILTERING */
+struct dsa_notifier_vlan_filtering_info {
+	bool vlan_filtering;
+	struct switchdev_trans *trans;
+	int sw_index;
+	int port;
+};
+
 struct dsa_slave_priv {
 	/* Copy of CPU port xmit for faster access in slave transmit hot path */
 	struct sk_buff *	(*xmit)(struct sk_buff *skb,
diff --git a/net/dsa/port.c b/net/dsa/port.c
index a18d8409acf3..60c6eca7d964 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -146,17 +146,14 @@ void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
 int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
 			    struct switchdev_trans *trans)
 {
-	struct dsa_switch *ds = dp->ds;
-
-	/* bridge skips -EOPNOTSUPP, so skip the prepare phase */
-	if (switchdev_trans_ph_prepare(trans))
-		return 0;
-
-	if (ds->ops->port_vlan_filtering)
-		return ds->ops->port_vlan_filtering(ds, dp->index,
-						    vlan_filtering);
+	struct dsa_notifier_vlan_filtering_info info = {
+		.sw_index = dp->ds->index,
+		.port = dp->index,
+		.trans = trans,
+		.vlan_filtering = vlan_filtering,
+	};
 
-	return 0;
+	return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_FILTERING, &info);
 }
 
 int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock,
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index 142b294d3446..831334dc5e79 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -235,6 +235,32 @@ static int dsa_switch_vlan_del(struct dsa_switch *ds,
 	return 0;
 }
 
+static int dsa_switch_vlan_filtering(struct dsa_switch *ds,
+				     struct dsa_notifier_vlan_filtering_info *info)
+{
+	struct switchdev_trans *trans = info->trans;
+	bool vlan_filtering = info->vlan_filtering;
+	int port = info->port;
+	int err;
+
+	/* bridge skips -EOPNOTSUPP, so skip the prepare phase */
+	if (switchdev_trans_ph_prepare(trans))
+		return 0;
+
+	/* Build a mask of port members */
+	bitmap_zero(ds->bitmap, ds->num_ports);
+	if (ds->index == info->sw_index)
+		set_bit(port, ds->bitmap);
+
+	for_each_set_bit(port, ds->bitmap, ds->num_ports) {
+		err = ds->ops->port_vlan_filtering(ds, port, vlan_filtering);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
 static int dsa_switch_event(struct notifier_block *nb,
 			    unsigned long event, void *info)
 {
@@ -269,6 +295,9 @@ static int dsa_switch_event(struct notifier_block *nb,
 	case DSA_NOTIFIER_VLAN_DEL:
 		err = dsa_switch_vlan_del(ds, info);
 		break;
+	case DSA_NOTIFIER_VLAN_FILTERING:
+		err = dsa_switch_vlan_filtering(ds, info);
+		break;
 	default:
 		err = -EOPNOTSUPP;
 		break;
-- 
2.17.1


From 3f2236e39d2d9b0d7d77d9033becdfeda717c41f Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Wed, 12 Dec 2018 15:14:34 -0800
Subject: [PATCH 10/13] net: dsa: Wire up multicast IGMP snooping attribute
 notification

The bridge can at runtime be configured with or without IGMP snooping
enabled but we were not processing the switchdev attribute that notifies
about that toggle, do this now.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 include/net/dsa.h  |  8 ++++++++
 net/dsa/dsa_priv.h | 11 +++++++++++
 net/dsa/port.c     | 13 +++++++++++++
 net/dsa/slave.c    |  9 +++++++++
 net/dsa/switch.c   | 28 ++++++++++++++++++++++++++++
 5 files changed, 69 insertions(+)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 7f2a668ef2cc..220f2b1d06d9 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -425,6 +425,8 @@ struct dsa_switch_ops {
 	/*
 	 * Multicast database
 	 */
+	int	(*port_mc_disabled)(struct dsa_switch *ds, int port,
+				    bool mc_disabled);
 	int (*port_mdb_prepare)(struct dsa_switch *ds, int port,
 				const struct switchdev_obj_port_mdb *mdb);
 	void (*port_mdb_add)(struct dsa_switch *ds, int port,
@@ -467,6 +469,12 @@ struct dsa_switch_ops {
 				 struct sk_buff *clone, unsigned int type);
 	bool	(*port_rxtstamp)(struct dsa_switch *ds, int port,
 				 struct sk_buff *skb, unsigned int type);
+
+	/*
+	 * SWITCHDEV integration
+	 */
+	int	(*port_attr_get)(struct dsa_switch *ds, int port,
+				 struct switchdev_attr *attr);
 };
 
 struct dsa_switch_driver {
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 1e3db5f2a699..79dd1dcbcb28 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -27,6 +27,7 @@ enum {
 	DSA_NOTIFIER_VLAN_ADD,
 	DSA_NOTIFIER_VLAN_DEL,
 	DSA_NOTIFIER_VLAN_FILTERING,
+	DSA_NOTIFIER_MC_DISABLED,
 };
 
 /* DSA_NOTIFIER_AGEING_TIME */
@@ -74,6 +75,14 @@ struct dsa_notifier_vlan_filtering_info {
 	int port;
 };
 
+/* DSA_NOTIFIER_MC_DISABLED */
+struct dsa_notifier_mc_disabled_info {
+	bool mc_disabled;
+	struct switchdev_trans *trans;
+	int sw_index;
+	int port;
+};
+
 struct dsa_slave_priv {
 	/* Copy of CPU port xmit for faster access in slave transmit hot path */
 	struct sk_buff *	(*xmit)(struct sk_buff *skb,
@@ -155,6 +164,8 @@ int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy);
 void dsa_port_disable(struct dsa_port *dp, struct phy_device *phy);
 int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br);
 void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br);
+int dsa_port_mc_disabled(struct dsa_port *dp, bool mc_disabled,
+			 struct switchdev_trans *trans);
 int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
 			    struct switchdev_trans *trans);
 int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock,
diff --git a/net/dsa/port.c b/net/dsa/port.c
index 60c6eca7d964..725824fd88cb 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -143,6 +143,19 @@ void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
 	dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
 }
 
+int dsa_port_mc_disabled(struct dsa_port *dp, bool mc_disabled,
+			 struct switchdev_trans *trans)
+{
+	struct dsa_notifier_mc_disabled_info info = {
+		.sw_index = dp->ds->index,
+		.port = dp->index,
+		.trans = trans,
+		.mc_disabled = mc_disabled,
+	};
+
+	return dsa_port_notify(dp, DSA_NOTIFIER_MC_DISABLED, &info);
+}
+
 int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
 			    struct switchdev_trans *trans)
 {
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index cc4fb8725fac..128a8e5b3a42 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -342,6 +342,9 @@ static int dsa_slave_port_attr_set(struct net_device *dev,
 	case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 		ret = dsa_port_ageing_time(dp, attr->u.ageing_time, trans);
 		break;
+	case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
+		ret = dsa_port_mc_disabled(dp, attr->u.mc_disabled, trans);
+		break;
 	default:
 		ret = -EOPNOTSUPP;
 		break;
@@ -428,6 +431,12 @@ static int dsa_slave_get_port_parent_id(struct net_device *dev,
 static int dsa_slave_port_attr_get(struct net_device *dev,
 				   struct switchdev_attr *attr)
 {
+	struct dsa_port *dp = dsa_slave_to_port(dev);
+	struct dsa_switch *ds = dp->ds;
+
+	if (ds->ops->port_attr_get)
+		return ds->ops->port_attr_get(ds, dp->index, attr);
+
 	switch (attr->id) {
 	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
 		attr->u.brport_flags_support = 0;
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index 831334dc5e79..9e7ac39a8dc0 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -261,6 +261,31 @@ static int dsa_switch_vlan_filtering(struct dsa_switch *ds,
 	return 0;
 }
 
+static int dsa_switch_mc_disabled(struct dsa_switch *ds,
+				  struct dsa_notifier_mc_disabled_info *info)
+{
+	struct switchdev_trans *trans = info->trans;
+	bool mc_disabled = info->mc_disabled;
+	int port = info->port;
+	int err;
+
+	if (switchdev_trans_ph_prepare(trans))
+		return ds->ops->port_mc_disabled ? 0 : -EOPNOTSUPP;
+
+	/* Build a mask of port members */
+	bitmap_zero(ds->bitmap, ds->num_ports);
+	if (ds->index == info->sw_index)
+		set_bit(port, ds->bitmap);
+
+	for_each_set_bit(port, ds->bitmap, ds->num_ports) {
+		err = ds->ops->port_mc_disabled(ds, port, mc_disabled);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
 static int dsa_switch_event(struct notifier_block *nb,
 			    unsigned long event, void *info)
 {
@@ -298,6 +323,9 @@ static int dsa_switch_event(struct notifier_block *nb,
 	case DSA_NOTIFIER_VLAN_FILTERING:
 		err = dsa_switch_vlan_filtering(ds, info);
 		break;
+	case DSA_NOTIFIER_MC_DISABLED:
+		err = dsa_switch_mc_disabled(ds, info);
+		break;
 	default:
 		err = -EOPNOTSUPP;
 		break;
-- 
2.17.1


From 224cfbb5f7920bc53c5ba7e025301646dca839cf Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Wed, 12 Dec 2018 15:35:52 -0800
Subject: [PATCH 11/13] net: dsa: b53: Add support for toggling IGMP snooping

Add the required configuration knobs to honor the turning off of IGMP
snooping (typically through the bridge interface) which means that when
IGMP snooping is off, we must be flooding mutlicast since we do not get
any notifications about IGMP join/leave through the network stack
running on the bridge.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 88 ++++++++++++++++++++++++++++++++
 drivers/net/dsa/b53/b53_priv.h   |  3 ++
 2 files changed, 91 insertions(+)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 6c894ad4768a..22a6f6afff7a 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1640,6 +1640,93 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 }
 EXPORT_SYMBOL(b53_fdb_dump);
 
+int b53_port_attr_get(struct dsa_switch *ds, int port,
+		      struct switchdev_attr *attr)
+{
+	struct b53_device *dev = ds->priv;
+	struct net_device *bridge_dev;
+	const struct dsa_port *dp;
+	bool mc_disabled;
+	unsigned int i;
+
+	if (is5325(dev) || is5365(dev))
+		return -EOPNOTSUPP;
+
+	switch (attr->id) {
+	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
+		attr->u.brport_flags_support = 0;
+		return 0;
+	case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED_SUPPORT:
+		mc_disabled = attr->u.mc_disabled_support;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	/* Handle the case were multiple bridges span the same switch device
+	 * and one of them has a different setting than what is being requested
+	 * which would be breaking filtering semantics for any of the other
+	 * bridge devices. We must also take care of non-bridged ports which
+	 * expect multicast filtering to remain turned on.
+	 */
+	for (i = 0; i < ds->num_ports; i++) {
+		if (dsa_is_unused_port(ds, i) || dsa_is_cpu_port(ds, i))
+			continue;
+
+		if (i == port)
+			continue;
+
+		dp = dsa_to_port(ds, i);
+		bridge_dev = dp->bridge_dev;
+		if ((bridge_dev &&
+		     bridge_dev != dsa_to_port(ds, port)->bridge_dev &&
+		     br_multicast_enabled(bridge_dev) != !mc_disabled) ||
+		     (!bridge_dev && mc_disabled)) {
+			netdev_err(dp->slave,
+				   "MC filtering is global to the switch!\n");
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(b53_port_attr_get);
+
+int b53_mc_disabled(struct dsa_switch *ds, int port, bool mc_disabled)
+{
+	unsigned int cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
+	struct b53_device *dev = ds->priv;
+	u8 port_ctrl;
+	u16 mc_ctrl;
+
+	/* Allow CPU port to receive multicast traffic */
+	b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(cpu_port), &port_ctrl);
+	if (mc_disabled)
+		port_ctrl |= PORT_CTRL_RX_MCST_EN;
+	else
+		port_ctrl &= ~PORT_CTRL_RX_MCST_EN;
+	b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(cpu_port), port_ctrl);
+
+	/* Allow port to flood multicast */
+	b53_read16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, &mc_ctrl);
+	if (mc_disabled)
+		mc_ctrl |= BIT(port);
+	else
+		mc_ctrl &= ~BIT(port);
+	b53_write16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, mc_ctrl);
+
+	/* And flood IP multicast as well */
+	b53_read16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, &mc_ctrl);
+	if (mc_disabled)
+		mc_ctrl |= BIT(port);
+	else
+		mc_ctrl &= ~BIT(port);
+	b53_write16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, mc_ctrl);
+
+	return 0;
+}
+EXPORT_SYMBOL(b53_mc_disabled);
+
 int b53_mdb_prepare(struct dsa_switch *ds, int port,
 		    const struct switchdev_obj_port_mdb *mdb)
 {
@@ -2025,6 +2112,7 @@ static const struct dsa_switch_ops b53_switch_ops = {
 	.port_mirror_add	= b53_mirror_add,
 	.port_mirror_del	= b53_mirror_del,
 	.port_mdb_prepare	= b53_mdb_prepare,
+	.port_mc_disabled	= b53_mc_disabled,
 	.port_mdb_add		= b53_mdb_add,
 	.port_mdb_del		= b53_mdb_del,
 };
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 620638ff9338..d407512180e3 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -350,6 +350,9 @@ int b53_fdb_del(struct dsa_switch *ds, int port,
 		const unsigned char *addr, u16 vid);
 int b53_fdb_dump(struct dsa_switch *ds, int port,
 		 dsa_fdb_dump_cb_t *cb, void *data);
+int b53_port_attr_get(struct dsa_switch *ds, int port,
+		      struct switchdev_attr *attr);
+int b53_mc_disabled(struct dsa_switch *ds, int port, bool mc_disabled);
 int b53_mdb_prepare(struct dsa_switch *ds, int port,
 		    const struct switchdev_obj_port_mdb *mdb);
 void b53_mdb_add(struct dsa_switch *ds, int port,
-- 
2.17.1


From 7fa263f108e8148a86762d73c74fde048a6e0eb3 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Thu, 6 Dec 2018 12:33:08 -0800
Subject: [PATCH 12/13] net: dsa: bcm_sf2: Enable management mode

Now that we have all the necessary plumbing in place to get notified
when a multicast MAC address must be programmed, configure the switch to
operate in managed mode and let the network stack learn about management
traffic.

During suspend, we need to bring the switch back into unmanaged/dumb
forwarding mode to allow stations to communicate with each other despite
the host CPU being suspended.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 39 ++++++++++++++++++-
 drivers/net/dsa/b53/b53_priv.h   |  1 +
 drivers/net/dsa/bcm_sf2.c        | 65 +++++++++++++++++++++++++-------
 drivers/net/dsa/bcm_sf2_regs.h   |  5 +++
 4 files changed, 95 insertions(+), 15 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 22a6f6afff7a..2d56e045c7be 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -364,8 +364,6 @@ static void b53_enable_vlan(struct b53_device *dev, bool enable,
 		b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);
 	}
 
-	mgmt &= ~SM_SW_FWD_MODE;
-
 	if (enable) {
 		vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
 		vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
@@ -490,6 +488,43 @@ static int b53_fast_age_vlan(struct b53_device *dev, u16 vid)
 	return b53_flush_arl(dev, FAST_AGE_VLAN);
 }
 
+void b53_port_learn_setup(struct dsa_switch *ds, int port)
+{
+	struct b53_device *dev = ds->priv;
+	u16 reg;
+
+	/* Enable learning */
+	b53_read16(dev, B53_CTRL_PAGE, B53_DIS_LEARN, &reg);
+	reg &= ~BIT(port);
+	b53_write16(dev, B53_CTRL_PAGE, B53_DIS_LEARN, reg);
+
+	/* Software learning control disabled */
+	b53_read16(dev, B53_CTRL_PAGE, B53_SFT_LRN_CTRL, &reg);
+	reg &= ~BIT(port);
+	b53_write16(dev, B53_CTRL_PAGE, B53_SFT_LRN_CTRL, reg);
+
+	/* Configure IP multicast, allow Unicast ARL misses to be forwarded */
+	b53_read16(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &reg);
+	reg |= B53_IPMC_FWD_EN | B53_UC_FWD_EN;
+	b53_write16(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, reg);
+
+	/* Set port in Unicast lookup forward map */
+	b53_read16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, &reg);
+	reg |= BIT(port);
+	b53_write16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, reg);
+
+	/* Do not set port in Multicast lookup forward map, learn */
+	b53_read16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, &reg);
+	reg &= ~BIT(port);
+	b53_write16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, reg);
+
+	/* Do not set port in IP multicast lookup formward map, learn */
+	b53_read16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, &reg);
+	reg &= ~BIT(port);
+	b53_write16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, reg);
+}
+EXPORT_SYMBOL(b53_port_learn_setup);
+
 void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
 {
 	struct b53_device *dev = ds->priv;
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index d407512180e3..0af394161be7 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -309,6 +309,7 @@ static inline int b53_switch_get_reset_gpio(struct b53_device *dev)
 #endif
 
 /* Exported functions towards other drivers */
+void b53_port_learn_setup(struct dsa_switch *ds, int port);
 void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port);
 int b53_configure_vlan(struct dsa_switch *ds);
 void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset,
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 5193da67dcdc..05bcfbf26495 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -51,20 +51,25 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
 	reg &= ~P_TXQ_PSM_VDD(port);
 	core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
 
-	/* Enable Broadcast, Multicast, Unicast forwarding to IMP port */
-	reg = core_readl(priv, CORE_IMP_CTL);
-	reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN);
-	reg &= ~(RX_DIS | TX_DIS);
-	core_writel(priv, reg, CORE_IMP_CTL);
+	/* Enable forwarding and managed mode */
+	core_writel(priv, SW_FWDG_EN | SW_FWDG_MODE, CORE_SWMODE);
 
-	/* Enable forwarding */
-	core_writel(priv, SW_FWDG_EN, CORE_SWMODE);
+	/* Configure port for learning */
+	b53_port_learn_setup(ds, port);
 
-	/* Enable IMP port in dumb mode */
+	/* Disable dumb forwarding mode for IMP port */
 	reg = core_readl(priv, CORE_SWITCH_CTRL);
-	reg |= MII_DUMB_FWDG_EN;
+	reg &= ~MII_DUMB_FWDG_EN;
 	core_writel(priv, reg, CORE_SWITCH_CTRL);
 
+	/* Enable IGMP and MLD high-level protocol snooping support */
+	reg = HL_PRTC_IGMP_RPTLVE_EN | HL_PRTC_IGMP_RPTVLE_FWD_MODE |
+	      HL_PRTC_IGMP_QRY_EN | HL_PRTC_IGMP_QRY_FWD_MODE |
+	      HL_PRTC_IGMP_UKN_EN | HL_PRTC_IGMP_UKN_FWD_MODE |
+	      HL_PRTC_MLD_RPTDONE_EN | HL_PRTC_MLD_RPTDONE_FWD_MODE |
+	      HL_PRTC_MLD_QRY_EN | HL_PRTC_MLD_QRY_FWD_MODE;
+	b53_write32(priv->dev, B53_MGMT_PAGE, B53_HL_PRTC_CTRL, reg);
+
 	/* Configure Traffic Class to QoS mapping, allow each priority to map
 	 * to a different queue number
 	 */
@@ -75,10 +80,26 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
 
 	b53_brcm_hdr_setup(ds, port);
 
+	/* Set IMP0 or IMP1 port to be managed port, enable BPDU */
+	reg = core_readl(priv, CORE_GMNCFGCFG);
+	reg &= ~(FRM_MGNP_MASK << FRM_MGNP_SHIFT);
+	if (port == core_readl(priv, CORE_IMP0_PRT_ID))
+		reg |= FRM_MNGP_IMP0 << FRM_MGNP_SHIFT;
+	if (port == core_readl(priv, CORE_IMP1_PRT_ID))
+		reg |= FRM_MGNP_IMP_DUAL << FRM_MGNP_SHIFT;
+	reg |= RXBPDU_EN;
+	core_writel(priv, reg, CORE_GMNCFGCFG);
+
 	/* Force link status for IMP port */
 	reg = core_readl(priv, offset);
 	reg |= (MII_SW_OR | LINK_STS);
 	core_writel(priv, reg, offset);
+
+	/* Enable Broadcast, Unicast forwarding to IMP port */
+	reg = core_readl(priv, CORE_IMP_CTL);
+	reg |= (RX_BCST_EN | RX_UCST_EN);
+	reg &= ~(RX_DIS | TX_DIS);
+	core_writel(priv, reg, CORE_IMP_CTL);
 }
 
 static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
@@ -166,10 +187,8 @@ static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
 	reg &= ~P_TXQ_PSM_VDD(port);
 	core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
 
-	/* Enable learning */
-	reg = core_readl(priv, CORE_DIS_LEARN);
-	reg &= ~BIT(port);
-	core_writel(priv, reg, CORE_DIS_LEARN);
+	/* Configure port for learning */
+	b53_port_learn_setup(ds, port);
 
 	/* Enable Broadcom tags for that port if requested */
 	if (priv->brcm_tag_mask & BIT(port))
@@ -683,6 +702,7 @@ static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
 {
 	struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
 	unsigned int port;
+	u32 reg;
 
 	bcm_sf2_intr_disable(priv);
 
@@ -695,6 +715,20 @@ static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
 			bcm_sf2_port_disable(ds, port, NULL);
 	}
 
+	/* Disable management mode since we won't be able to
+	 * perform any tasks while being suspended.
+	 */
+	reg = core_readl(priv, CORE_SWMODE);
+	reg &= ~SW_FWDG_MODE;
+	core_writel(priv, reg, CORE_SWMODE);
+
+	/* Enable IMP port in dumb switching mode to allow
+	 * Magic Packets to reach IMP port.
+	 */
+	reg = core_readl(priv, CORE_SWITCH_CTRL);
+	reg |= MII_DUMB_FWDG_EN;
+	core_writel(priv, reg, CORE_SWITCH_CTRL);
+
 	return 0;
 }
 
@@ -962,6 +996,11 @@ static const struct dsa_switch_ops bcm_sf2_ops = {
 	.set_rxnfc		= bcm_sf2_set_rxnfc,
 	.port_mirror_add	= b53_mirror_add,
 	.port_mirror_del	= b53_mirror_del,
+	.port_mc_disabled	= b53_mc_disabled,
+	.port_mdb_prepare	= b53_mdb_prepare,
+	.port_mdb_add		= b53_mdb_add,
+	.port_mdb_del		= b53_mdb_del,
+	.port_attr_get		= b53_port_attr_get,
 };
 
 struct bcm_sf2_of_data {
diff --git a/drivers/net/dsa/bcm_sf2_regs.h b/drivers/net/dsa/bcm_sf2_regs.h
index 67f056206f37..d95572a175bc 100644
--- a/drivers/net/dsa/bcm_sf2_regs.h
+++ b/drivers/net/dsa/bcm_sf2_regs.h
@@ -222,8 +222,13 @@ enum bcm_sf2_reg_offs {
 #define CORE_GMNCFGCFG			0x0800
 #define  RST_MIB_CNT			(1 << 0)
 #define  RXBPDU_EN			(1 << 1)
+#define  FRM_MGNP_SHIFT			6
+#define  FRM_MGNP_MASK			0x3
+#define  FRM_MNGP_IMP0			2
+#define  FRM_MGNP_IMP_DUAL		3
 
 #define CORE_IMP0_PRT_ID		0x0804
+#define CORE_IMP1_PRT_ID		0x0808
 
 #define CORE_RST_MIB_CNT_EN		0x0950
 
-- 
2.17.1


From 3fd8225c5a60005141d7c5f0954aaa37d49a51b5 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Thu, 31 Jan 2019 17:04:33 -0800
Subject: [PATCH 13/13] DNP: b53: Debugging

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 2d56e045c7be..2a05ff3fce27 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -281,7 +281,7 @@ static void b53_set_vlan_entry(struct b53_device *dev, u16 vid,
 		b53_do_vlan_op(dev, VTA_CMD_WRITE);
 	}
 
-	dev_dbg(dev->ds->dev, "VID: %d, members: 0x%04x, untag: 0x%04x\n",
+	dev_info(dev->ds->dev, "VID: %d, members: 0x%04x, untag: 0x%04x\n",
 		vid, vlan->members, vlan->untag);
 }
 
@@ -427,6 +427,9 @@ static void b53_enable_vlan(struct b53_device *dev, bool enable,
 
 	dev->vlan_enabled = enable;
 	dev->vlan_filtering_enabled = enable_filtering;
+
+       dev_info(dev->dev, "VLAN: %d, filtering: %d\n",
+               dev->vlan_enabled, dev->vlan_filtering_enabled);
 }
 
 static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
@@ -1343,6 +1346,8 @@ int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering)
 		new_pvid = dev->ports[port].pvid;
 	}
 
+	dev_info(ds->dev, "PVID: %d, new PVID: %d\n", pvid, new_pvid);
+
 	if (pvid != new_pvid)
 		b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
 			    new_pvid);
@@ -1385,7 +1390,7 @@ void b53_vlan_add(struct dsa_switch *ds, int port,
 		b53_get_vlan_entry(dev, vid, vl);
 
 		vl->members |= BIT(port);
-		if (untagged && !dsa_is_cpu_port(ds, port))
+		if (untagged) //!dsa_is_cpu_port(ds, port))
 			vl->untag |= BIT(port);
 		else
 			vl->untag &= ~BIT(port);
@@ -1394,7 +1399,7 @@ void b53_vlan_add(struct dsa_switch *ds, int port,
 		b53_fast_age_vlan(dev, vid);
 	}
 
-	if (pvid) {
+	if (pvid && !dsa_is_cpu_port(ds, port)) {
 		b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
 			    vlan->vid_end);
 		b53_fast_age_vlan(dev, vid);
@@ -1758,6 +1763,8 @@ int b53_mc_disabled(struct dsa_switch *ds, int port, bool mc_disabled)
 		mc_ctrl &= ~BIT(port);
 	b53_write16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, mc_ctrl);
 
+	dev_info(dev->dev, "MC: %d, port: %d\n", mc_disabled, port);
+
 	return 0;
 }
 EXPORT_SYMBOL(b53_mc_disabled);
@@ -1783,6 +1790,9 @@ void b53_mdb_add(struct dsa_switch *ds, int port,
 	struct b53_device *priv = ds->priv;
 	int ret;
 
+       dev_info(ds->dev, "Adding, port: %d MAC: %pM, VID: %d\n",
+                port, mdb->addr, mdb->vid);
+
 	ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
 	if (ret)
 		dev_err(ds->dev, "failed to add MDB entry\n");
@@ -1795,6 +1805,9 @@ int b53_mdb_del(struct dsa_switch *ds, int port,
 	struct b53_device *priv = ds->priv;
 	int ret;
 
+       dev_info(ds->dev, "Removing, port: %d MAC: %pM, VID: %d\n",
+                port, mdb->addr, mdb->vid);
+
 	ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, false);
 	if (ret)
 		dev_err(ds->dev, "failed to delete MDB entry\n");
-- 
2.17.1

Re: [PATCH net-next 0/2] Remove unused variables

[David Miller]

From: Florian Fainelli <f.fainelli@gmail.com>
Date: Tue, 12 Feb 2019 15:39:57 -0800

> This removes unused variables from mlxsw and ethsw after the recent
> removal of SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, build scripts are now
> fixed to take care of those warnings :).

Series applied, thanks Florian.