[PATCH net-next 0/4] Rethink PHYLINK callbacks for SJA1105 DSA

[PATCH net-next 0/4] Rethink PHYLINK callbacks for SJA1105 DSA

[Vladimir Oltean]

This patchset implements phylink_mac_link_up and phylink_mac_link_down,
while also removing the code that was modifying the EGRESS and INGRESS
MAC settings for STP and replacing them with the "inhibit TX"
functionality.

Vladimir Oltean (4):
  net: dsa: sja1105: Use SPEED_{10,100,1000,UNKNOWN} macros
  net: dsa: sja1105: Update some comments about PHYLIB
  net: dsa: sja1105: Export the sja1105_inhibit_tx function
  net: dsa: sja1105: Rethink the PHYLINK callbacks

 drivers/net/dsa/sja1105/Kconfig        |   2 +-
 drivers/net/dsa/sja1105/sja1105.h      |   2 +
 drivers/net/dsa/sja1105/sja1105_main.c | 138 +++++++++----------------
 drivers/net/dsa/sja1105/sja1105_spi.c  |  14 +--
 4 files changed, 62 insertions(+), 94 deletions(-)

-- 
2.17.1

[PATCH net-next 1/4] net: dsa: sja1105: Use SPEED_{10,100,1000,UNKNOWN} macros

[Vladimir Oltean]

This is a cosmetic patch that replaces the link speed numbers used in
the driver with the corresponding ethtool macros.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Suggested-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/dsa/sja1105/sja1105_main.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 15bee785fd6d..580568922f35 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -689,12 +689,12 @@ static int sja1105_parse_dt(struct sja1105_private *priv,
 	return rc;
 }
 
-/* Convert back and forth MAC speed from Mbps to SJA1105 encoding */
+/* Convert link speed from SJA1105 to ethtool encoding */
 static int sja1105_speed[] = {
-	[SJA1105_SPEED_AUTO]     = 0,
-	[SJA1105_SPEED_10MBPS]   = 10,
-	[SJA1105_SPEED_100MBPS]  = 100,
-	[SJA1105_SPEED_1000MBPS] = 1000,
+	[SJA1105_SPEED_AUTO]		= SPEED_UNKNOWN,
+	[SJA1105_SPEED_10MBPS]		= SPEED_10,
+	[SJA1105_SPEED_100MBPS]		= SPEED_100,
+	[SJA1105_SPEED_1000MBPS]	= SPEED_1000,
 };
 
 /* Set link speed and enable/disable traffic I/O in the MAC configuration
@@ -720,17 +720,17 @@ static int sja1105_adjust_port_config(struct sja1105_private *priv, int port,
 	mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
 
 	switch (speed_mbps) {
-	case 0:
+	case SPEED_UNKNOWN:
 		/* No speed update requested */
 		speed = SJA1105_SPEED_AUTO;
 		break;
-	case 10:
+	case SPEED_10:
 		speed = SJA1105_SPEED_10MBPS;
 		break;
-	case 100:
+	case SPEED_100:
 		speed = SJA1105_SPEED_100MBPS;
 		break;
-	case 1000:
+	case SPEED_1000:
 		speed = SJA1105_SPEED_1000MBPS;
 		break;
 	default:
@@ -786,7 +786,7 @@ static void sja1105_mac_config(struct dsa_switch *ds, int port,
 	struct sja1105_private *priv = ds->priv;
 
 	if (!state->link)
-		sja1105_adjust_port_config(priv, port, 0, false);
+		sja1105_adjust_port_config(priv, port, SPEED_UNKNOWN, false);
 	else
 		sja1105_adjust_port_config(priv, port, state->speed, true);
 }
@@ -1311,7 +1311,7 @@ static int sja1105_static_config_reload(struct sja1105_private *priv)
 		goto out;
 
 	for (i = 0; i < SJA1105_NUM_PORTS; i++) {
-		bool enabled = (speed_mbps[i] != 0);
+		bool enabled = (speed_mbps[i] != SPEED_UNKNOWN);
 
 		if (i != dsa_upstream_port(priv->ds, i))
 			sja1105_bridge_stp_state_set(priv->ds, i, stp_state[i]);
-- 
2.17.1

Re: [PATCH net-next 1/4] net: dsa: sja1105: Use SPEED_{10,100,1000,UNKNOWN} macros

[Andrew Lunn]

On Sat, Jun 08, 2019 at 04:03:41PM +0300, Vladimir Oltean wrote:
> This is a cosmetic patch that replaces the link speed numbers used in
> the driver with the corresponding ethtool macros.
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
> Suggested-by: Andrew Lunn <andrew@lunn.ch>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

Re: [PATCH net-next 1/4] net: dsa: sja1105: Use SPEED_{10,100,1000,UNKNOWN} macros

[Florian Fainelli]

On 6/8/2019 6:03 AM, Vladimir Oltean wrote:
> This is a cosmetic patch that replaces the link speed numbers used in
> the driver with the corresponding ethtool macros.
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
> Suggested-by: Andrew Lunn <andrew@lunn.ch>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

[PATCH net-next 2/4] net: dsa: sja1105: Update some comments about PHYLIB

[Vladimir Oltean]

Since the driver is now using PHYLINK exclusively, it makes sense to
remove all references to it and replace them with PHYLINK.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
---
 drivers/net/dsa/sja1105/Kconfig        | 2 +-
 drivers/net/dsa/sja1105/sja1105_main.c | 6 ++----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/dsa/sja1105/Kconfig b/drivers/net/dsa/sja1105/Kconfig
index 049cea8240e4..105e8d3e380e 100644
--- a/drivers/net/dsa/sja1105/Kconfig
+++ b/drivers/net/dsa/sja1105/Kconfig
@@ -9,7 +9,7 @@ tristate "NXP SJA1105 Ethernet switch family support"
 	  This is the driver for the NXP SJA1105 automotive Ethernet switch
 	  family. These are 5-port devices and are managed over an SPI
 	  interface. Probing is handled based on OF bindings and so is the
-	  linkage to phylib. The driver supports the following revisions:
+	  linkage to PHYLINK. The driver supports the following revisions:
 	    - SJA1105E (Gen. 1, No TT-Ethernet)
 	    - SJA1105T (Gen. 1, TT-Ethernet)
 	    - SJA1105P (Gen. 2, No SGMII, No TT-Ethernet)
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 580568922f35..d7f4dbfdb15d 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -70,8 +70,7 @@ static int sja1105_init_mac_settings(struct sja1105_private *priv)
 		/* Keep standard IFG of 12 bytes on egress. */
 		.ifg = 0,
 		/* Always put the MAC speed in automatic mode, where it can be
-		 * retrieved from the PHY object through phylib and
-		 * sja1105_adjust_port_config.
+		 * adjusted at runtime by PHYLINK.
 		 */
 		.speed = SJA1105_SPEED_AUTO,
 		/* No static correction for 1-step 1588 events */
@@ -116,7 +115,6 @@ static int sja1105_init_mac_settings(struct sja1105_private *priv)
 	if (!table->entries)
 		return -ENOMEM;
 
-	/* Override table based on phylib DT bindings */
 	table->entry_count = SJA1105_NUM_PORTS;
 
 	mac = table->entries;
@@ -157,7 +155,7 @@ static int sja1105_init_mii_settings(struct sja1105_private *priv,
 	if (!table->entries)
 		return -ENOMEM;
 
-	/* Override table based on phylib DT bindings */
+	/* Override table based on PHYLINK DT bindings */
 	table->entry_count = SJA1105_MAX_XMII_PARAMS_COUNT;
 
 	mii = table->entries;
-- 
2.17.1

Re: [PATCH net-next 2/4] net: dsa: sja1105: Update some comments about PHYLIB

[Andrew Lunn]

On Sat, Jun 08, 2019 at 04:03:42PM +0300, Vladimir Oltean wrote:
> Since the driver is now using PHYLINK exclusively, it makes sense to
> remove all references to it and replace them with PHYLINK.
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

Re: [PATCH net-next 2/4] net: dsa: sja1105: Update some comments about PHYLIB

[Florian Fainelli]

On 6/8/2019 6:03 AM, Vladimir Oltean wrote:
> Since the driver is now using PHYLINK exclusively, it makes sense to
> remove all references to it and replace them with PHYLINK.
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

[PATCH net-next 3/4] net: dsa: sja1105: Export the sja1105_inhibit_tx function

[Vladimir Oltean]

This will be used to stop egress traffic in .phylink_mac_link_up.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
---
 drivers/net/dsa/sja1105/sja1105.h     |  2 ++
 drivers/net/dsa/sja1105/sja1105_spi.c | 14 ++++++++------
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/net/dsa/sja1105/sja1105.h b/drivers/net/dsa/sja1105/sja1105.h
index 38b6c7c7db86..ed66d00eb394 100644
--- a/drivers/net/dsa/sja1105/sja1105.h
+++ b/drivers/net/dsa/sja1105/sja1105.h
@@ -138,6 +138,8 @@ int sja1105_spi_send_long_packed_buf(const struct sja1105_private *priv,
 				     sja1105_spi_rw_mode_t rw, u64 base_addr,
 				     void *packed_buf, u64 buf_len);
 int sja1105_static_config_upload(struct sja1105_private *priv);
+int sja1105_inhibit_tx(const struct sja1105_private *priv,
+		       unsigned long port_bitmap, bool tx_inhibited);
 
 extern struct sja1105_info sja1105e_info;
 extern struct sja1105_info sja1105t_info;
diff --git a/drivers/net/dsa/sja1105/sja1105_spi.c b/drivers/net/dsa/sja1105/sja1105_spi.c
index d729a0f0b28e..d7ff74259b31 100644
--- a/drivers/net/dsa/sja1105/sja1105_spi.c
+++ b/drivers/net/dsa/sja1105/sja1105_spi.c
@@ -285,20 +285,22 @@ static int sja1105_cold_reset(const struct sja1105_private *priv)
 	return priv->info->reset_cmd(priv, &reset);
 }
 
-static int sja1105_inhibit_tx(const struct sja1105_private *priv,
-			      const unsigned long *port_bitmap)
+int sja1105_inhibit_tx(const struct sja1105_private *priv,
+		       unsigned long port_bitmap, bool tx_inhibited)
 {
 	const struct sja1105_regs *regs = priv->info->regs;
 	u64 inhibit_cmd;
-	int port, rc;
+	int rc;
 
 	rc = sja1105_spi_send_int(priv, SPI_READ, regs->port_control,
 				  &inhibit_cmd, SJA1105_SIZE_PORT_CTRL);
 	if (rc < 0)
 		return rc;
 
-	for_each_set_bit(port, port_bitmap, SJA1105_NUM_PORTS)
-		inhibit_cmd |= BIT(port);
+	if (tx_inhibited)
+		inhibit_cmd |= port_bitmap;
+	else
+		inhibit_cmd &= ~port_bitmap;
 
 	return sja1105_spi_send_int(priv, SPI_WRITE, regs->port_control,
 				    &inhibit_cmd, SJA1105_SIZE_PORT_CTRL);
@@ -415,7 +417,7 @@ int sja1105_static_config_upload(struct sja1105_private *priv)
 	 * Tx on all ports and waiting for current packet to drain.
 	 * Otherwise, the PHY will see an unterminated Ethernet packet.
 	 */
-	rc = sja1105_inhibit_tx(priv, &port_bitmap);
+	rc = sja1105_inhibit_tx(priv, port_bitmap, true);
 	if (rc < 0) {
 		dev_err(dev, "Failed to inhibit Tx on ports\n");
 		return -ENXIO;
-- 
2.17.1

Re: [PATCH net-next 3/4] net: dsa: sja1105: Export the sja1105_inhibit_tx function

[Andrew Lunn]

On Sat, Jun 08, 2019 at 04:03:43PM +0300, Vladimir Oltean wrote:
> This will be used to stop egress traffic in .phylink_mac_link_up.
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

Re: [PATCH net-next 3/4] net: dsa: sja1105: Export the sja1105_inhibit_tx function

[Florian Fainelli]

On 6/8/2019 6:03 AM, Vladimir Oltean wrote:
> This will be used to stop egress traffic in .phylink_mac_link_up.
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

[PATCH net-next 4/4] net: dsa: sja1105: Rethink the PHYLINK callbacks

[Vladimir Oltean]

The first fact that needs to be stated is that the per-MAC settings in
SJA1105 called EGRESS and INGRESS do *not* disable egress and ingress on
the MAC. They only prevent non-link-local traffic from being
sent/received on this port.

So instead of having .phylink_mac_config essentially mess with the STP
state and force it to DISABLED/BLOCKING (which also brings useless
complications in sja1105_static_config_reload), simply add the
.phylink_mac_link_down and .phylink_mac_link_up callbacks which inhibit
TX at the MAC level, while leaving RX essentially enabled.

Also stop from trying to put the link down in .phylink_mac_config, which
is incorrect.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
---
 drivers/net/dsa/sja1105/sja1105_main.c | 114 +++++++++----------------
 1 file changed, 40 insertions(+), 74 deletions(-)

diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index d7f4dbfdb15d..56b357a421de 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -695,18 +695,10 @@ static int sja1105_speed[] = {
 	[SJA1105_SPEED_1000MBPS]	= SPEED_1000,
 };
 
-/* Set link speed and enable/disable traffic I/O in the MAC configuration
- * for a specific port.
- *
- * @speed_mbps: If 0, leave the speed unchanged, else adapt MAC to PHY speed.
- * @enabled: Manage Rx and Tx settings for this port. If false, overrides the
- *	     settings from the STP state, but not persistently (does not
- *	     overwrite the static MAC info for this port).
- */
+/* Set link speed in the MAC configuration for a specific port. */
 static int sja1105_adjust_port_config(struct sja1105_private *priv, int port,
-				      int speed_mbps, bool enabled)
+				      int speed_mbps)
 {
-	struct sja1105_mac_config_entry dyn_mac;
 	struct sja1105_xmii_params_entry *mii;
 	struct sja1105_mac_config_entry *mac;
 	struct device *dev = priv->ds->dev;
@@ -714,8 +706,14 @@ static int sja1105_adjust_port_config(struct sja1105_private *priv, int port,
 	sja1105_speed_t speed;
 	int rc;
 
-	mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries;
+	/* On P/Q/R/S, one can read from the device via the MAC reconfiguration
+	 * tables. On E/T, MAC reconfig tables are not readable, only writable.
+	 * We have to *know* what the MAC looks like.  For the sake of keeping
+	 * the code common, we'll use the static configuration tables as a
+	 * reasonable approximation for both E/T and P/Q/R/S.
+	 */
 	mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
+	mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries;
 
 	switch (speed_mbps) {
 	case SPEED_UNKNOWN:
@@ -736,26 +734,16 @@ static int sja1105_adjust_port_config(struct sja1105_private *priv, int port,
 		return -EINVAL;
 	}
 
-	/* If requested, overwrite SJA1105_SPEED_AUTO from the static MAC
-	 * configuration table, since this will be used for the clocking setup,
-	 * and we no longer need to store it in the static config (already told
-	 * hardware we want auto during upload phase).
+	/* Overwrite SJA1105_SPEED_AUTO from the static MAC configuration
+	 * table, since this will be used for the clocking setup, and we no
+	 * longer need to store it in the static config (already told hardware
+	 * we want auto during upload phase).
 	 */
 	mac[port].speed = speed;
 
-	/* On P/Q/R/S, one can read from the device via the MAC reconfiguration
-	 * tables. On E/T, MAC reconfig tables are not readable, only writable.
-	 * We have to *know* what the MAC looks like.  For the sake of keeping
-	 * the code common, we'll use the static configuration tables as a
-	 * reasonable approximation for both E/T and P/Q/R/S.
-	 */
-	dyn_mac = mac[port];
-	dyn_mac.ingress = enabled && mac[port].ingress;
-	dyn_mac.egress  = enabled && mac[port].egress;
-
 	/* Write to the dynamic reconfiguration tables */
-	rc = sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG,
-					  port, &dyn_mac, true);
+	rc = sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
+					  &mac[port], true);
 	if (rc < 0) {
 		dev_err(dev, "Failed to write MAC config: %d\n", rc);
 		return rc;
@@ -767,9 +755,6 @@ static int sja1105_adjust_port_config(struct sja1105_private *priv, int port,
 	 * the clock setup does interrupt the clock signal for a certain time
 	 * which causes trouble for all PHYs relying on this signal.
 	 */
-	if (!enabled)
-		return 0;
-
 	phy_mode = mii->xmii_mode[port];
 	if (phy_mode != XMII_MODE_RGMII)
 		return 0;
@@ -784,9 +769,24 @@ static void sja1105_mac_config(struct dsa_switch *ds, int port,
 	struct sja1105_private *priv = ds->priv;
 
 	if (!state->link)
-		sja1105_adjust_port_config(priv, port, SPEED_UNKNOWN, false);
-	else
-		sja1105_adjust_port_config(priv, port, state->speed, true);
+		return;
+
+	sja1105_adjust_port_config(priv, port, state->speed);
+}
+
+static void sja1105_mac_link_down(struct dsa_switch *ds, int port,
+				  unsigned int mode,
+				  phy_interface_t interface)
+{
+	sja1105_inhibit_tx(ds->priv, BIT(port), true);
+}
+
+static void sja1105_mac_link_up(struct dsa_switch *ds, int port,
+				unsigned int mode,
+				phy_interface_t interface,
+				struct phy_device *phydev)
+{
+	sja1105_inhibit_tx(ds->priv, BIT(port), false);
 }
 
 static void sja1105_phylink_validate(struct dsa_switch *ds, int port,
@@ -1241,27 +1241,6 @@ static void sja1105_bridge_leave(struct dsa_switch *ds, int port,
 	sja1105_bridge_member(ds, port, br, false);
 }
 
-static u8 sja1105_stp_state_get(struct sja1105_private *priv, int port)
-{
-	struct sja1105_mac_config_entry *mac;
-
-	mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
-
-	if (!mac[port].ingress && !mac[port].egress && !mac[port].dyn_learn)
-		return BR_STATE_BLOCKING;
-	if (mac[port].ingress && !mac[port].egress && !mac[port].dyn_learn)
-		return BR_STATE_LISTENING;
-	if (mac[port].ingress && !mac[port].egress && mac[port].dyn_learn)
-		return BR_STATE_LEARNING;
-	if (mac[port].ingress && mac[port].egress && mac[port].dyn_learn)
-		return BR_STATE_FORWARDING;
-	/* This is really an error condition if the MAC was in none of the STP
-	 * states above. But treating the port as disabled does nothing, which
-	 * is adequate, and it also resets the MAC to a known state later on.
-	 */
-	return BR_STATE_DISABLED;
-}
-
 /* For situations where we need to change a setting at runtime that is only
  * available through the static configuration, resetting the switch in order
  * to upload the new static config is unavoidable. Back up the settings we
@@ -1272,27 +1251,18 @@ static int sja1105_static_config_reload(struct sja1105_private *priv)
 {
 	struct sja1105_mac_config_entry *mac;
 	int speed_mbps[SJA1105_NUM_PORTS];
-	u8 stp_state[SJA1105_NUM_PORTS];
 	int rc, i;
 
 	mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
 
-	/* Back up settings changed by sja1105_adjust_port_config and
-	 * sja1105_bridge_stp_state_set and restore their defaults.
+	/* Back up the dynamic link speed changed by sja1105_adjust_port_config
+	 * in order to temporarily restore it to SJA1105_SPEED_AUTO - which the
+	 * switch wants to see in the static config in order to allow us to
+	 * change it through the dynamic interface later.
 	 */
 	for (i = 0; i < SJA1105_NUM_PORTS; i++) {
 		speed_mbps[i] = sja1105_speed[mac[i].speed];
 		mac[i].speed = SJA1105_SPEED_AUTO;
-		if (i == dsa_upstream_port(priv->ds, i)) {
-			mac[i].ingress = true;
-			mac[i].egress = true;
-			mac[i].dyn_learn = true;
-		} else {
-			stp_state[i] = sja1105_stp_state_get(priv, i);
-			mac[i].ingress = false;
-			mac[i].egress = false;
-			mac[i].dyn_learn = false;
-		}
 	}
 
 	/* Reset switch and send updated static configuration */
@@ -1309,13 +1279,7 @@ static int sja1105_static_config_reload(struct sja1105_private *priv)
 		goto out;
 
 	for (i = 0; i < SJA1105_NUM_PORTS; i++) {
-		bool enabled = (speed_mbps[i] != SPEED_UNKNOWN);
-
-		if (i != dsa_upstream_port(priv->ds, i))
-			sja1105_bridge_stp_state_set(priv->ds, i, stp_state[i]);
-
-		rc = sja1105_adjust_port_config(priv, i, speed_mbps[i],
-						enabled);
+		rc = sja1105_adjust_port_config(priv, i, speed_mbps[i]);
 		if (rc < 0)
 			goto out;
 	}
@@ -1933,6 +1897,8 @@ static const struct dsa_switch_ops sja1105_switch_ops = {
 	.set_ageing_time	= sja1105_set_ageing_time,
 	.phylink_validate	= sja1105_phylink_validate,
 	.phylink_mac_config	= sja1105_mac_config,
+	.phylink_mac_link_up	= sja1105_mac_link_up,
+	.phylink_mac_link_down	= sja1105_mac_link_down,
 	.get_strings		= sja1105_get_strings,
 	.get_ethtool_stats	= sja1105_get_ethtool_stats,
 	.get_sset_count		= sja1105_get_sset_count,
-- 
2.17.1

Re: [PATCH net-next 4/4] net: dsa: sja1105: Rethink the PHYLINK callbacks

[Andrew Lunn]

On Sat, Jun 08, 2019 at 04:03:44PM +0300, Vladimir Oltean wrote:
> The first fact that needs to be stated is that the per-MAC settings in
> SJA1105 called EGRESS and INGRESS do *not* disable egress and ingress on
> the MAC. They only prevent non-link-local traffic from being
> sent/received on this port.
> 
> So instead of having .phylink_mac_config essentially mess with the STP
> state and force it to DISABLED/BLOCKING (which also brings useless
> complications in sja1105_static_config_reload), simply add the
> .phylink_mac_link_down and .phylink_mac_link_up callbacks which inhibit
> TX at the MAC level, while leaving RX essentially enabled.
> 
> Also stop from trying to put the link down in .phylink_mac_config, which
> is incorrect.
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

Re: [PATCH net-next 4/4] net: dsa: sja1105: Rethink the PHYLINK callbacks

[Florian Fainelli]

On 6/8/2019 6:03 AM, Vladimir Oltean wrote:
> The first fact that needs to be stated is that the per-MAC settings in
> SJA1105 called EGRESS and INGRESS do *not* disable egress and ingress on
> the MAC. They only prevent non-link-local traffic from being
> sent/received on this port.
> 
> So instead of having .phylink_mac_config essentially mess with the STP
> state and force it to DISABLED/BLOCKING (which also brings useless
> complications in sja1105_static_config_reload), simply add the
> .phylink_mac_link_down and .phylink_mac_link_up callbacks which inhibit
> TX at the MAC level, while leaving RX essentially enabled.
> 
> Also stop from trying to put the link down in .phylink_mac_config, which
> is incorrect.
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

Re: [PATCH net-next 0/4] Rethink PHYLINK callbacks for SJA1105 DSA

[David Miller]

From: Vladimir Oltean <olteanv@gmail.com>
Date: Sat,  8 Jun 2019 16:03:40 +0300

> This patchset implements phylink_mac_link_up and phylink_mac_link_down,
> while also removing the code that was modifying the EGRESS and INGRESS
> MAC settings for STP and replacing them with the "inhibit TX"
> functionality.

Series applied, thanks.