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net: ocelot: replay switchdev events when joining bridge

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The premise of this change is that the switchdev port attributes and
objects offloaded by ocelot might have been missed when we are joining
an already existing bridge port, such as a bonding interface.

The patch pulls these switchdev attributes and objects from the bridge,
on behalf of the 'bridge port' net device which might be either the
ocelot switch interface, or the bonding upper interface.

The ocelot_net.c belongs strictly to the switchdev ocelot driver, while
ocelot.c is part of a library shared with the DSA felix driver.
The ocelot_port_bridge_leave function (part of the common library) used
to call ocelot_port_vlan_filtering(false), something which is not
necessary for DSA, since the framework deals with that already there.
So we move this function to ocelot_switchdev_unsync, which is specific
to the switchdev driver.

The code movement described above makes ocelot_port_bridge_leave no
longer return an error code, so we change its type from int to void.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2021-03-23 01:51:52 +02:00 committed by David S. Miller
parent 81ef35e761
commit e4bd44e89d
5 changed files with 113 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/dsa/ocelot/felix.c
View File

@ -719,7 +719,9 @@ static int felix_bridge_join(struct dsa_switch *ds, int port,
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_bridge_join(ocelot, port, br);
ocelot_port_bridge_join(ocelot, port, br);
return 0;
}
static void felix_bridge_leave(struct dsa_switch *ds, int port,

3
drivers/net/ethernet/mscc/Kconfig
View File

@ -11,7 +11,7 @@ config NET_VENDOR_MICROSEMI
if NET_VENDOR_MICROSEMI
# Users should depend on NET_SWITCHDEV, HAS_IOMEM
# Users should depend on NET_SWITCHDEV, HAS_IOMEM, BRIDGE
config MSCC_OCELOT_SWITCH_LIB
select NET_DEVLINK
select REGMAP_MMIO
@ -24,6 +24,7 @@ config MSCC_OCELOT_SWITCH_LIB
config MSCC_OCELOT_SWITCH
tristate "Ocelot switch driver"
depends on BRIDGE || BRIDGE=n
depends on NET_SWITCHDEV
depends on HAS_IOMEM
depends on OF_NET

18
drivers/net/ethernet/mscc/ocelot.c
View File

@ -1514,34 +1514,28 @@ int ocelot_port_mdb_del(struct ocelot *ocelot, int port,
}
EXPORT_SYMBOL(ocelot_port_mdb_del);
int ocelot_port_bridge_join(struct ocelot *ocelot, int port,
struct net_device *bridge)
void ocelot_port_bridge_join(struct ocelot *ocelot, int port,
struct net_device *bridge)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
ocelot_port->bridge = bridge;
return 0;
ocelot_apply_bridge_fwd_mask(ocelot);
}
EXPORT_SYMBOL(ocelot_port_bridge_join);
int ocelot_port_bridge_leave(struct ocelot *ocelot, int port,
struct net_device *bridge)
void ocelot_port_bridge_leave(struct ocelot *ocelot, int port,
struct net_device *bridge)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct ocelot_vlan pvid = {0}, native_vlan = {0};
int ret;
ocelot_port->bridge = NULL;
ret = ocelot_port_vlan_filtering(ocelot, port, false);
if (ret)
return ret;
ocelot_port_set_pvid(ocelot, port, pvid);
ocelot_port_set_native_vlan(ocelot, port, native_vlan);
return 0;
ocelot_apply_bridge_fwd_mask(ocelot);
}
EXPORT_SYMBOL(ocelot_port_bridge_leave);

117
drivers/net/ethernet/mscc/ocelot_net.c
View File

@ -1117,47 +1117,126 @@ static int ocelot_port_obj_del(struct net_device *dev,
return ret;
}
static void ocelot_inherit_brport_flags(struct ocelot *ocelot, int port,
struct net_device *brport_dev)
{
struct switchdev_brport_flags flags = {0};
int flag;
flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
for_each_set_bit(flag, &flags.mask, 32)
if (br_port_flag_is_set(brport_dev, BIT(flag)))
flags.val |= BIT(flag);
ocelot_port_bridge_flags(ocelot, port, flags);
}
static void ocelot_clear_brport_flags(struct ocelot *ocelot, int port)
{
struct switchdev_brport_flags flags;
flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
flags.val = flags.mask & ~BR_LEARNING;
ocelot_port_bridge_flags(ocelot, port, flags);
}
static int ocelot_switchdev_sync(struct ocelot *ocelot, int port,
struct net_device *brport_dev,
struct net_device *bridge_dev,
struct netlink_ext_ack *extack)
{
clock_t ageing_time;
u8 stp_state;
int err;
ocelot_inherit_brport_flags(ocelot, port, brport_dev);
stp_state = br_port_get_stp_state(brport_dev);
ocelot_bridge_stp_state_set(ocelot, port, stp_state);
err = ocelot_port_vlan_filtering(ocelot, port,
br_vlan_enabled(bridge_dev));
if (err)
return err;
ageing_time = br_get_ageing_time(bridge_dev);
ocelot_port_attr_ageing_set(ocelot, port, ageing_time);
err = br_mdb_replay(bridge_dev, brport_dev,
&ocelot_switchdev_blocking_nb, extack);
if (err && err != -EOPNOTSUPP)
return err;
err = br_fdb_replay(bridge_dev, brport_dev, &ocelot_switchdev_nb);
if (err)
return err;
err = br_vlan_replay(bridge_dev, brport_dev,
&ocelot_switchdev_blocking_nb, extack);
if (err && err != -EOPNOTSUPP)
return err;
return 0;
}
static int ocelot_switchdev_unsync(struct ocelot *ocelot, int port)
{
int err;
err = ocelot_port_vlan_filtering(ocelot, port, false);
if (err)
return err;
ocelot_clear_brport_flags(ocelot, port);
ocelot_bridge_stp_state_set(ocelot, port, BR_STATE_FORWARDING);
return 0;
}
static int ocelot_netdevice_bridge_join(struct net_device *dev,
struct net_device *brport_dev,
struct net_device *bridge,
struct netlink_ext_ack *extack)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
struct switchdev_brport_flags flags;
int port = priv->chip_port;
int err;
flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
flags.val = flags.mask;
ocelot_port_bridge_join(ocelot, port, bridge);
err = ocelot_port_bridge_join(ocelot, port, bridge);
err = ocelot_switchdev_sync(ocelot, port, brport_dev, bridge, extack);
if (err)
return err;
ocelot_port_bridge_flags(ocelot, port, flags);
goto err_switchdev_sync;
return 0;
err_switchdev_sync:
ocelot_port_bridge_leave(ocelot, port, bridge);
return err;
}
static int ocelot_netdevice_bridge_leave(struct net_device *dev,
struct net_device *brport_dev,
struct net_device *bridge)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
struct switchdev_brport_flags flags;
int port = priv->chip_port;
int err;
flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
flags.val = flags.mask & ~BR_LEARNING;
err = ocelot_switchdev_unsync(ocelot, port);
if (err)
return err;
err = ocelot_port_bridge_leave(ocelot, port, bridge);
ocelot_port_bridge_leave(ocelot, port, bridge);
ocelot_port_bridge_flags(ocelot, port, flags);
return err;
return 0;
}
static int ocelot_netdevice_lag_join(struct net_device *dev,
@ -1182,7 +1261,7 @@ static int ocelot_netdevice_lag_join(struct net_device *dev,
if (!bridge_dev || !netif_is_bridge_master(bridge_dev))
return 0;
err = ocelot_netdevice_bridge_join(dev, bridge_dev, extack);
err = ocelot_netdevice_bridge_join(dev, bond, bridge_dev, extack);
if (err)
goto err_bridge_join;
@ -1208,7 +1287,7 @@ static int ocelot_netdevice_lag_leave(struct net_device *dev,
if (!bridge_dev || !netif_is_bridge_master(bridge_dev))
return 0;
return ocelot_netdevice_bridge_leave(dev, bridge_dev);
return ocelot_netdevice_bridge_leave(dev, bond, bridge_dev);
}
static int ocelot_netdevice_changeupper(struct net_device *dev,
@ -1221,10 +1300,12 @@ static int ocelot_netdevice_changeupper(struct net_device *dev,
if (netif_is_bridge_master(info->upper_dev)) {
if (info->linking)
err = ocelot_netdevice_bridge_join(dev, info->upper_dev,
err = ocelot_netdevice_bridge_join(dev, dev,
info->upper_dev,
extack);
else
err = ocelot_netdevice_bridge_leave(dev, info->upper_dev);
err = ocelot_netdevice_bridge_leave(dev, dev,
info->upper_dev);
}
if (netif_is_lag_master(info->upper_dev)) {
if (info->linking)

6
include/soc/mscc/ocelot.h
View File

@ -803,10 +803,10 @@ int ocelot_port_pre_bridge_flags(struct ocelot *ocelot, int port,
struct switchdev_brport_flags val);
void ocelot_port_bridge_flags(struct ocelot *ocelot, int port,
struct switchdev_brport_flags val);
int ocelot_port_bridge_join(struct ocelot *ocelot, int port,
struct net_device *bridge);
int ocelot_port_bridge_leave(struct ocelot *ocelot, int port,
void ocelot_port_bridge_join(struct ocelot *ocelot, int port,
struct net_device *bridge);
void ocelot_port_bridge_leave(struct ocelot *ocelot, int port,
struct net_device *bridge);
int ocelot_fdb_dump(struct ocelot *ocelot, int port,
dsa_fdb_dump_cb_t *cb, void *data);
int ocelot_fdb_add(struct ocelot *ocelot, int port,