diff mbox series

[net-next,v17,2/4] net: dsa: mv88e6xxx: wrap .set_egress_port method

Message ID 20210317134643.24463-3-kabel@kernel.org (mailing list archive)
State Accepted
Commit 2fda45f019fd4feca5ed672dbb8323375adbdcfb
Delegated to: Netdev Maintainers
Headers show
Series Add support for mv88e6393x family of Marvell | expand

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Commit Message

Marek Behún March 17, 2021, 1:46 p.m. UTC 
There are two implementations of the .set_egress_port method, and both
of them, if successful, set chip->*gress_dest_port variable.

To avoid code repetition, wrap this method into
mv88e6xxx_set_egress_port.

Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Pavana Sharma <pavana.sharma@digi.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c    | 49 ++++++++++++++++++-----------
 drivers/net/dsa/mv88e6xxx/global1.c | 19 ++---------
 2 files changed, 33 insertions(+), 35 deletions(-)

Comments

Vladimir Oltean March 17, 2021, 2:22 p.m. UTC | #1 
On Wed, Mar 17, 2021 at 02:46:41PM +0100, Marek Behún wrote:
> There are two implementations of the .set_egress_port method, and both
> of them, if successful, set chip->*gress_dest_port variable.
> 
> To avoid code repetition, wrap this method into
> mv88e6xxx_set_egress_port.
> 
> Signed-off-by: Marek Behún <kabel@kernel.org>
> Reviewed-by: Pavana Sharma <pavana.sharma@digi.com>
> ---

Separately from this series, do you think you can rename the
"egress_port" into "monitor_port" across the driver? Seeing an
EGRESS_DIR_INGRESS is pretty strange.

Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Marek Behún March 17, 2021, 2:34 p.m. UTC | #2 
On Wed, 17 Mar 2021 16:22:35 +0200
Vladimir Oltean <olteanv@gmail.com> wrote:

> On Wed, Mar 17, 2021 at 02:46:41PM +0100, Marek Behún wrote:
> > There are two implementations of the .set_egress_port method, and
> > both of them, if successful, set chip->*gress_dest_port variable.
> > 
> > To avoid code repetition, wrap this method into
> > mv88e6xxx_set_egress_port.
> > 
> > Signed-off-by: Marek Behún <kabel@kernel.org>
> > Reviewed-by: Pavana Sharma <pavana.sharma@digi.com>
> > ---  
> 
> Separately from this series, do you think you can rename the
> "egress_port" into "monitor_port" across the driver? Seeing an
> EGRESS_DIR_INGRESS is pretty strange.

You mean even renaming methods .set_egress_port to .set_monitor_port,
and type
  enum mv88e6xxx_egress_direction
to
  enum mv88e6xxx_monitor_direction?
Vladimir Oltean March 17, 2021, 2:40 p.m. UTC | #3 
On Wed, Mar 17, 2021 at 03:34:33PM +0100, Marek Behún wrote:
> On Wed, 17 Mar 2021 16:22:35 +0200
> Vladimir Oltean <olteanv@gmail.com> wrote:
> 
> > On Wed, Mar 17, 2021 at 02:46:41PM +0100, Marek Behún wrote:
> > > There are two implementations of the .set_egress_port method, and
> > > both of them, if successful, set chip->*gress_dest_port variable.
> > > 
> > > To avoid code repetition, wrap this method into
> > > mv88e6xxx_set_egress_port.
> > > 
> > > Signed-off-by: Marek Behún <kabel@kernel.org>
> > > Reviewed-by: Pavana Sharma <pavana.sharma@digi.com>
> > > ---  
> > 
> > Separately from this series, do you think you can rename the
> > "egress_port" into "monitor_port" across the driver? Seeing an
> > EGRESS_DIR_INGRESS is pretty strange.
> 
> You mean even renaming methods .set_egress_port to .set_monitor_port,
> and type
>   enum mv88e6xxx_egress_direction
> to
>   enum mv88e6xxx_monitor_direction?

Yeah, if I'm not asking for too much. I think the last thing some
hardware with closed documentation needs is a driver that obfuscates the
configuration it applies to it.
diff mbox series

Patch

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index cd0c8d1ed905..fc9d3875f099 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2550,6 +2550,27 @@  static int mv88e6xxx_serdes_power(struct mv88e6xxx_chip *chip, int port,
 	return err;
 }
 
+static int mv88e6xxx_set_egress_port(struct mv88e6xxx_chip *chip,
+				     enum mv88e6xxx_egress_direction direction,
+				     int port)
+{
+	int err;
+
+	if (!chip->info->ops->set_egress_port)
+		return -EOPNOTSUPP;
+
+	err = chip->info->ops->set_egress_port(chip, direction, port);
+	if (err)
+		return err;
+
+	if (direction == MV88E6XXX_EGRESS_DIR_INGRESS)
+		chip->ingress_dest_port = port;
+	else
+		chip->egress_dest_port = port;
+
+	return 0;
+}
+
 static int mv88e6xxx_setup_upstream_port(struct mv88e6xxx_chip *chip, int port)
 {
 	struct dsa_switch *ds = chip->ds;
@@ -2572,19 +2593,17 @@  static int mv88e6xxx_setup_upstream_port(struct mv88e6xxx_chip *chip, int port)
 				return err;
 		}
 
-		if (chip->info->ops->set_egress_port) {
-			err = chip->info->ops->set_egress_port(chip,
+		err = mv88e6xxx_set_egress_port(chip,
 						MV88E6XXX_EGRESS_DIR_INGRESS,
 						upstream_port);
-			if (err)
-				return err;
+		if (err && err != -EOPNOTSUPP)
+			return err;
 
-			err = chip->info->ops->set_egress_port(chip,
+		err = mv88e6xxx_set_egress_port(chip,
 						MV88E6XXX_EGRESS_DIR_EGRESS,
 						upstream_port);
-			if (err)
-				return err;
-		}
+		if (err && err != -EOPNOTSUPP)
+			return err;
 	}
 
 	return 0;
@@ -5338,9 +5357,6 @@  static int mv88e6xxx_port_mirror_add(struct dsa_switch *ds, int port,
 	int i;
 	int err;
 
-	if (!chip->info->ops->set_egress_port)
-		return -EOPNOTSUPP;
-
 	mutex_lock(&chip->reg_lock);
 	if ((ingress ? chip->ingress_dest_port : chip->egress_dest_port) !=
 	    mirror->to_local_port) {
@@ -5355,9 +5371,8 @@  static int mv88e6xxx_port_mirror_add(struct dsa_switch *ds, int port,
 			goto out;
 		}
 
-		err = chip->info->ops->set_egress_port(chip,
-						       direction,
-						       mirror->to_local_port);
+		err = mv88e6xxx_set_egress_port(chip, direction,
+						mirror->to_local_port);
 		if (err)
 			goto out;
 	}
@@ -5390,10 +5405,8 @@  static void mv88e6xxx_port_mirror_del(struct dsa_switch *ds, int port,
 
 	/* Reset egress port when no other mirror is active */
 	if (!other_mirrors) {
-		if (chip->info->ops->set_egress_port(chip,
-						     direction,
-						     dsa_upstream_port(ds,
-								       port)))
+		if (mv88e6xxx_set_egress_port(chip, direction,
+					      dsa_upstream_port(ds, port)))
 			dev_err(ds->dev, "failed to set egress port\n");
 	}
 
diff --git a/drivers/net/dsa/mv88e6xxx/global1.c b/drivers/net/dsa/mv88e6xxx/global1.c
index 33d443a37efc..815b0f681d69 100644
--- a/drivers/net/dsa/mv88e6xxx/global1.c
+++ b/drivers/net/dsa/mv88e6xxx/global1.c
@@ -315,7 +315,6 @@  int mv88e6095_g1_set_egress_port(struct mv88e6xxx_chip *chip,
 				 enum mv88e6xxx_egress_direction direction,
 				 int port)
 {
-	int *dest_port_chip;
 	u16 reg;
 	int err;
 
@@ -325,13 +324,11 @@  int mv88e6095_g1_set_egress_port(struct mv88e6xxx_chip *chip,
 
 	switch (direction) {
 	case MV88E6XXX_EGRESS_DIR_INGRESS:
-		dest_port_chip = &chip->ingress_dest_port;
 		reg &= ~MV88E6185_G1_MONITOR_CTL_INGRESS_DEST_MASK;
 		reg |= port <<
 		       __bf_shf(MV88E6185_G1_MONITOR_CTL_INGRESS_DEST_MASK);
 		break;
 	case MV88E6XXX_EGRESS_DIR_EGRESS:
-		dest_port_chip = &chip->egress_dest_port;
 		reg &= ~MV88E6185_G1_MONITOR_CTL_EGRESS_DEST_MASK;
 		reg |= port <<
 		       __bf_shf(MV88E6185_G1_MONITOR_CTL_EGRESS_DEST_MASK);
@@ -340,11 +337,7 @@  int mv88e6095_g1_set_egress_port(struct mv88e6xxx_chip *chip,
 		return -EINVAL;
 	}
 
-	err = mv88e6xxx_g1_write(chip, MV88E6185_G1_MONITOR_CTL, reg);
-	if (!err)
-		*dest_port_chip = port;
-
-	return err;
+	return mv88e6xxx_g1_write(chip, MV88E6185_G1_MONITOR_CTL, reg);
 }
 
 /* Older generations also call this the ARP destination. It has been
@@ -380,28 +373,20 @@  int mv88e6390_g1_set_egress_port(struct mv88e6xxx_chip *chip,
 				 enum mv88e6xxx_egress_direction direction,
 				 int port)
 {
-	int *dest_port_chip;
 	u16 ptr;
-	int err;
 
 	switch (direction) {
 	case MV88E6XXX_EGRESS_DIR_INGRESS:
-		dest_port_chip = &chip->ingress_dest_port;
 		ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_INGRESS_DEST;
 		break;
 	case MV88E6XXX_EGRESS_DIR_EGRESS:
-		dest_port_chip = &chip->egress_dest_port;
 		ptr = MV88E6390_G1_MONITOR_MGMT_CTL_PTR_EGRESS_DEST;
 		break;
 	default:
 		return -EINVAL;
 	}
 
-	err = mv88e6390_g1_monitor_write(chip, ptr, port);
-	if (!err)
-		*dest_port_chip = port;
-
-	return err;
+	return mv88e6390_g1_monitor_write(chip, ptr, port);
 }
 
 int mv88e6390_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port)