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net: mscc: ocelot: deny changing the native VLAN from the prepare phase

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Put the preparation phase of switchdev VLAN objects to some good use,
and move the check we already had, for preventing the existence of more
than one egress-untagged VLAN per port, to the preparation phase of the
addition.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Vladimir Oltean 2020-10-31 12:29:15 +02:00 committed by Jakub Kicinski
parent be0576fed6
commit 2f0402fedf
4 changed files with 57 additions and 21 deletions
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13
drivers/net/dsa/ocelot/felix.c
View File

@ -112,10 +112,21 @@ static void felix_bridge_leave(struct dsa_switch *ds, int port,
ocelot_port_bridge_leave(ocelot, port, br);
}
/* This callback needs to be present */
static int felix_vlan_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan)
{
struct ocelot *ocelot = ds->priv;
u16 vid, flags = vlan->flags;
int err;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
err = ocelot_vlan_prepare(ocelot, port, vid,
flags & BRIDGE_VLAN_INFO_PVID,
flags & BRIDGE_VLAN_INFO_UNTAGGED);
if (err)
return err;
}
return 0;
}

41
drivers/net/ethernet/mscc/ocelot.c
View File

@ -147,21 +147,12 @@ static int ocelot_vlant_set_mask(struct ocelot *ocelot, u16 vid, u32 mask)
return ocelot_vlant_wait_for_completion(ocelot);
}
static int ocelot_port_set_native_vlan(struct ocelot *ocelot, int port,
struct ocelot_vlan native_vlan)
static void ocelot_port_set_native_vlan(struct ocelot *ocelot, int port,
struct ocelot_vlan native_vlan)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
u32 val = 0;
/* Deny changing the native VLAN, but always permit deleting it */
if (ocelot_port->native_vlan.vid != native_vlan.vid &&
ocelot_port->native_vlan.valid && native_vlan.valid) {
dev_err(ocelot->dev,
"Port already has a native VLAN: %d\n",
ocelot_port->native_vlan.vid);
return -EBUSY;
}
ocelot_port->native_vlan = native_vlan;
ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_VID(native_vlan.vid),
@ -182,8 +173,6 @@ static int ocelot_port_set_native_vlan(struct ocelot *ocelot, int port,
ocelot_rmw_gix(ocelot, val,
REW_TAG_CFG_TAG_CFG_M,
REW_TAG_CFG, port);
return 0;
}
/* Default vlan to clasify for untagged frames (may be zero) */
@ -259,6 +248,24 @@ int ocelot_port_vlan_filtering(struct ocelot *ocelot, int port,
}
EXPORT_SYMBOL(ocelot_port_vlan_filtering);
int ocelot_vlan_prepare(struct ocelot *ocelot, int port, u16 vid, bool pvid,
bool untagged)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
/* Deny changing the native VLAN, but always permit deleting it */
if (untagged && ocelot_port->native_vlan.vid != vid &&
ocelot_port->native_vlan.valid) {
dev_err(ocelot->dev,
"Port already has a native VLAN: %d\n",
ocelot_port->native_vlan.vid);
return -EBUSY;
}
return 0;
}
EXPORT_SYMBOL(ocelot_vlan_prepare);
int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid,
bool untagged)
{
@ -285,9 +292,7 @@ int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid,
native_vlan.vid = vid;
native_vlan.valid = true;
ret = ocelot_port_set_native_vlan(ocelot, port, native_vlan);
if (ret)
return ret;
ocelot_port_set_native_vlan(ocelot, port, native_vlan);
}
return 0;
@ -1193,7 +1198,9 @@ int ocelot_port_bridge_leave(struct ocelot *ocelot, int port,
return ret;
ocelot_port_set_pvid(ocelot, port, pvid);
return ocelot_port_set_native_vlan(ocelot, port, native_vlan);
ocelot_port_set_native_vlan(ocelot, port, native_vlan);
return 0;
}
EXPORT_SYMBOL(ocelot_port_bridge_leave);

22
drivers/net/ethernet/mscc/ocelot_net.c
View File

@ -206,6 +206,17 @@ static void ocelot_port_adjust_link(struct net_device *dev)
ocelot_adjust_link(ocelot, port, dev->phydev);
}
static int ocelot_vlan_vid_prepare(struct net_device *dev, u16 vid, bool pvid,
bool untagged)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->chip_port;
return ocelot_vlan_prepare(ocelot, port, vid, pvid, untagged);
}
static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,
bool untagged)
{
@ -812,9 +823,14 @@ static int ocelot_port_obj_add_vlan(struct net_device *dev,
u16 vid;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
ret = ocelot_vlan_vid_add(dev, vid,
vlan->flags & BRIDGE_VLAN_INFO_PVID,
vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED);
bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
if (switchdev_trans_ph_prepare(trans))
ret = ocelot_vlan_vid_prepare(dev, vid, pvid,
untagged);
else
ret = ocelot_vlan_vid_add(dev, vid, pvid, untagged);
if (ret)
return ret;
}

2
include/soc/mscc/ocelot.h
View File

@ -747,6 +747,8 @@ int ocelot_fdb_add(struct ocelot *ocelot, int port,
const unsigned char *addr, u16 vid);
int ocelot_fdb_del(struct ocelot *ocelot, int port,
const unsigned char *addr, u16 vid);
int ocelot_vlan_prepare(struct ocelot *ocelot, int port, u16 vid, bool pvid,
bool untagged);
int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid,
bool untagged);
int ocelot_vlan_del(struct ocelot *ocelot, int port, u16 vid);