[net-next,v6,5/6] net: dsa: microchip: enable MTU normalization for KSZ8795 and KSZ9477 compatible switches
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From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Woojung Huh <woojung.huh@microchip.com>,
UNGLinuxDriver@microchip.com, Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Vladimir Oltean <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
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Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>, kernel@pengutronix.de,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
Arun.Ramadoss@microchip.com
Subject: [PATCH net-next v6 5/6] net: dsa: microchip: enable MTU normalization
for KSZ8795 and KSZ9477 compatible switches
Date: Thu, 24 Nov 2022 11:14:57 +0100
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| Series |
net: dsa: microchip: add MTU support for KSZ8 series
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Commit Message
Oleksij Rempel
Nov. 24, 2022, 10:14 a.m. UTC
KSZ8795 and KSZ9477 compatible series of switches use global max frame
size configuration register. So, enable MTU normalization for this reason.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
drivers/net/dsa/microchip/ksz8795.c | 2 ++
drivers/net/dsa/microchip/ksz9477.c | 2 ++
2 files changed, 4 insertions(+)
Comments
On Thu, 2022-11-24 at 11:14 +0100, Oleksij Rempel wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you > know the content is safe > > KSZ8795 and KSZ9477 compatible series of switches use global max > frame > size configuration register. So, enable MTU normalization for this > reason. Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com> > > Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> > --- > drivers/net/dsa/microchip/ksz8795.c | 2 ++ > drivers/net/dsa/microchip/ksz9477.c | 2 ++ > 2 files changed, 4 insertions(+) > > diff --git a/drivers/net/dsa/microchip/ksz8795.c > b/drivers/net/dsa/microchip/ksz8795.c > index d01bfd609130..060e41b9b6ef 100644 > --- a/drivers/net/dsa/microchip/ksz8795.c > +++ b/drivers/net/dsa/microchip/ksz8795.c > @@ -1357,6 +1357,8 @@ int ksz8_setup(struct dsa_switch *ds) > struct ksz_device *dev = ds->priv; > int i; > > + ds->mtu_enforcement_ingress = true; > + > ksz_cfg(dev, S_REPLACE_VID_CTRL, SW_FLOW_CTRL, true); > > /* Enable automatic fast aging when link changed detected. */ > diff --git a/drivers/net/dsa/microchip/ksz9477.c > b/drivers/net/dsa/microchip/ksz9477.c > index f6e7968ab105..47b54ecf2c6f 100644 > --- a/drivers/net/dsa/microchip/ksz9477.c > +++ b/drivers/net/dsa/microchip/ksz9477.c > @@ -1134,6 +1134,8 @@ int ksz9477_setup(struct dsa_switch *ds) > struct ksz_device *dev = ds->priv; > int ret = 0; > > + ds->mtu_enforcement_ingress = true; > + > /* Required for port partitioning. */ > ksz9477_cfg32(dev, REG_SW_QM_CTRL__4, UNICAST_VLAN_BOUNDARY, > true); > -- > 2.30.2 >
On Thu, Nov 24, 2022 at 11:14:57AM +0100, Oleksij Rempel wrote: > KSZ8795 and KSZ9477 compatible series of switches use global max frame > size configuration register. So, enable MTU normalization for this reason. > > Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> > --- Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index d01bfd609130..060e41b9b6ef 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -1357,6 +1357,8 @@ int ksz8_setup(struct dsa_switch *ds) struct ksz_device *dev = ds->priv; int i; + ds->mtu_enforcement_ingress = true; + ksz_cfg(dev, S_REPLACE_VID_CTRL, SW_FLOW_CTRL, true); /* Enable automatic fast aging when link changed detected. */ diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index f6e7968ab105..47b54ecf2c6f 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -1134,6 +1134,8 @@ int ksz9477_setup(struct dsa_switch *ds) struct ksz_device *dev = ds->priv; int ret = 0; + ds->mtu_enforcement_ingress = true; + /* Required for port partitioning. */ ksz9477_cfg32(dev, REG_SW_QM_CTRL__4, UNICAST_VLAN_BOUNDARY, true);