Tobias Waldekranz
2022-Mar-15 00:25 UTC
[Bridge] [PATCH v4 net-next 12/15] net: dsa: Handle MST state changes
Add the usual trampoline functionality from the generic DSA layer down
to the drivers for MST state changes.
When a state changes to disabled/blocking/listening, make sure to fast
age any dynamic entries in the affected VLANs (those controlled by the
MSTI in question).
Signed-off-by: Tobias Waldekranz <tobias at waldekranz.com>
---
include/net/dsa.h | 3 ++
net/dsa/dsa_priv.h | 2 ++
net/dsa/port.c | 70 +++++++++++++++++++++++++++++++++++++++++++---
net/dsa/slave.c | 6 ++++
4 files changed, 77 insertions(+), 4 deletions(-)
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 1ddaa2cc5842..0f369f2e9a97 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -945,7 +945,10 @@ struct dsa_switch_ops {
struct dsa_bridge bridge);
void (*port_stp_state_set)(struct dsa_switch *ds, int port,
u8 state);
+ int (*port_mst_state_set)(struct dsa_switch *ds, int port,
+ const struct switchdev_mst_state *state);
void (*port_fast_age)(struct dsa_switch *ds, int port);
+ int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid);
int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port,
struct switchdev_brport_flags flags,
struct netlink_ext_ack *extack);
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index d90b4cf0c9d2..2ae8996cf7c8 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -215,6 +215,8 @@ static inline struct net_device
*dsa_master_find_slave(struct net_device *dev,
void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
const struct dsa_device_ops *tag_ops);
int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age);
+int dsa_port_set_mst_state(struct dsa_port *dp,
+ const struct switchdev_mst_state *state);
int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy);
int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy);
void dsa_port_disable_rt(struct dsa_port *dp);
diff --git a/net/dsa/port.c b/net/dsa/port.c
index 3ac114f6fc22..a2a817bb77b1 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -30,12 +30,11 @@ static int dsa_port_notify(const struct dsa_port *dp,
unsigned long e, void *v)
return dsa_tree_notify(dp->ds->dst, e, v);
}
-static void dsa_port_notify_bridge_fdb_flush(const struct dsa_port *dp)
+static void dsa_port_notify_bridge_fdb_flush(const struct dsa_port *dp, u16
vid)
{
struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
struct switchdev_notifier_fdb_info info = {
- /* flush all VLANs */
- .vid = 0,
+ .vid = vid,
};
/* When the port becomes standalone it has already left the bridge.
@@ -57,7 +56,42 @@ static void dsa_port_fast_age(const struct dsa_port *dp)
ds->ops->port_fast_age(ds, dp->index);
- dsa_port_notify_bridge_fdb_flush(dp);
+ /* flush all VLANs */
+ dsa_port_notify_bridge_fdb_flush(dp, 0);
+}
+
+static int dsa_port_vlan_fast_age(const struct dsa_port *dp, u16 vid)
+{
+ struct dsa_switch *ds = dp->ds;
+ int err;
+
+ if (!ds->ops->port_vlan_fast_age)
+ return -EOPNOTSUPP;
+
+ err = ds->ops->port_vlan_fast_age(ds, dp->index, vid);
+
+ if (!err)
+ dsa_port_notify_bridge_fdb_flush(dp, vid);
+
+ return err;
+}
+
+static int dsa_port_msti_fast_age(const struct dsa_port *dp, u16 msti)
+{
+ DECLARE_BITMAP(vids, VLAN_N_VID) = { 0 };
+ int err, vid;
+
+ err = br_mst_get_info(dsa_port_bridge_dev_get(dp), msti, vids);
+ if (err)
+ return err;
+
+ for_each_set_bit(vid, vids, VLAN_N_VID) {
+ err = dsa_port_vlan_fast_age(dp, vid);
+ if (err)
+ return err;
+ }
+
+ return 0;
}
static bool dsa_port_can_configure_learning(struct dsa_port *dp)
@@ -118,6 +152,32 @@ static void dsa_port_set_state_now(struct dsa_port *dp, u8
state,
pr_err("DSA: failed to set STP state %u (%d)\n", state, err);
}
+int dsa_port_set_mst_state(struct dsa_port *dp,
+ const struct switchdev_mst_state *state)
+{
+ struct dsa_switch *ds = dp->ds;
+ int err;
+
+ if (!ds->ops->port_mst_state_set)
+ return -EOPNOTSUPP;
+
+ err = ds->ops->port_mst_state_set(ds, dp->index, state);
+ if (err)
+ return err;
+
+ if (dp->learning) {
+ switch (state->state) {
+ case BR_STATE_DISABLED:
+ case BR_STATE_BLOCKING:
+ case BR_STATE_LISTENING:
+ err = dsa_port_msti_fast_age(dp, state->msti);
+ break;
+ }
+ }
+
+ return err;
+}
+
int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy)
{
struct dsa_switch *ds = dp->ds;
@@ -326,6 +386,8 @@ static bool dsa_port_supports_mst(struct dsa_port *dp)
struct dsa_switch *ds = dp->ds;
return ds->ops->vlan_msti_set &&
+ ds->ops->port_mst_state_set &&
+ ds->ops->port_vlan_fast_age &&
dsa_port_can_configure_learning(dp);
}
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 5e986cdeaae5..4300fc76f3af 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -450,6 +450,12 @@ static int dsa_slave_port_attr_set(struct net_device *dev,
const void *ctx,
ret = dsa_port_set_state(dp, attr->u.stp_state, true);
break;
+ case SWITCHDEV_ATTR_ID_PORT_MST_STATE:
+ if (!dsa_port_offloads_bridge_port(dp, attr->orig_dev))
+ return -EOPNOTSUPP;
+
+ ret = dsa_port_set_mst_state(dp, &attr->u.mst_state);
+ break;
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
if (!dsa_port_offloads_bridge_dev(dp, attr->orig_dev))
return -EOPNOTSUPP;
--
2.25.1
Vladimir Oltean
2022-Mar-15 16:42 UTC
[Bridge] [PATCH v4 net-next 12/15] net: dsa: Handle MST state changes
On Tue, Mar 15, 2022 at 01:25:40AM +0100, Tobias Waldekranz wrote:> Add the usual trampoline functionality from the generic DSA layer down > to the drivers for MST state changes. > > When a state changes to disabled/blocking/listening, make sure to fast > age any dynamic entries in the affected VLANs (those controlled by the > MSTI in question). > > Signed-off-by: Tobias Waldekranz <tobias at waldekranz.com> > --- > include/net/dsa.h | 3 ++ > net/dsa/dsa_priv.h | 2 ++ > net/dsa/port.c | 70 +++++++++++++++++++++++++++++++++++++++++++--- > net/dsa/slave.c | 6 ++++ > 4 files changed, 77 insertions(+), 4 deletions(-) > > diff --git a/include/net/dsa.h b/include/net/dsa.h > index 1ddaa2cc5842..0f369f2e9a97 100644 > --- a/include/net/dsa.h > +++ b/include/net/dsa.h > @@ -945,7 +945,10 @@ struct dsa_switch_ops { > struct dsa_bridge bridge); > void (*port_stp_state_set)(struct dsa_switch *ds, int port, > u8 state); > + int (*port_mst_state_set)(struct dsa_switch *ds, int port, > + const struct switchdev_mst_state *state); > void (*port_fast_age)(struct dsa_switch *ds, int port); > + int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); > int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, > struct switchdev_brport_flags flags, > struct netlink_ext_ack *extack); > diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h > index d90b4cf0c9d2..2ae8996cf7c8 100644 > --- a/net/dsa/dsa_priv.h > +++ b/net/dsa/dsa_priv.h > @@ -215,6 +215,8 @@ static inline struct net_device *dsa_master_find_slave(struct net_device *dev, > void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp, > const struct dsa_device_ops *tag_ops); > int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age); > +int dsa_port_set_mst_state(struct dsa_port *dp, > + const struct switchdev_mst_state *state); > int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy); > int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy); > void dsa_port_disable_rt(struct dsa_port *dp); > diff --git a/net/dsa/port.c b/net/dsa/port.c > index 3ac114f6fc22..a2a817bb77b1 100644 > --- a/net/dsa/port.c > +++ b/net/dsa/port.c > @@ -30,12 +30,11 @@ static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v) > return dsa_tree_notify(dp->ds->dst, e, v); > } > > -static void dsa_port_notify_bridge_fdb_flush(const struct dsa_port *dp) > +static void dsa_port_notify_bridge_fdb_flush(const struct dsa_port *dp, u16 vid) > { > struct net_device *brport_dev = dsa_port_to_bridge_port(dp); > struct switchdev_notifier_fdb_info info = { > - /* flush all VLANs */ > - .vid = 0, > + .vid = vid, > }; > > /* When the port becomes standalone it has already left the bridge. > @@ -57,7 +56,42 @@ static void dsa_port_fast_age(const struct dsa_port *dp) > > ds->ops->port_fast_age(ds, dp->index); > > - dsa_port_notify_bridge_fdb_flush(dp); > + /* flush all VLANs */ > + dsa_port_notify_bridge_fdb_flush(dp, 0); > +} > + > +static int dsa_port_vlan_fast_age(const struct dsa_port *dp, u16 vid) > +{ > + struct dsa_switch *ds = dp->ds; > + int err; > + > + if (!ds->ops->port_vlan_fast_age) > + return -EOPNOTSUPP; > + > + err = ds->ops->port_vlan_fast_age(ds, dp->index, vid); > + > + if (!err) > + dsa_port_notify_bridge_fdb_flush(dp, vid); > + > + return err; > +} > + > +static int dsa_port_msti_fast_age(const struct dsa_port *dp, u16 msti) > +{ > + DECLARE_BITMAP(vids, VLAN_N_VID) = { 0 }; > + int err, vid; > + > + err = br_mst_get_info(dsa_port_bridge_dev_get(dp), msti, vids); > + if (err) > + return err; > + > + for_each_set_bit(vid, vids, VLAN_N_VID) { > + err = dsa_port_vlan_fast_age(dp, vid); > + if (err) > + return err; > + } > + > + return 0; > } > > static bool dsa_port_can_configure_learning(struct dsa_port *dp) > @@ -118,6 +152,32 @@ static void dsa_port_set_state_now(struct dsa_port *dp, u8 state, > pr_err("DSA: failed to set STP state %u (%d)\n", state, err); > } > > +int dsa_port_set_mst_state(struct dsa_port *dp, > + const struct switchdev_mst_state *state) > +{ > + struct dsa_switch *ds = dp->ds; > + int err; > + > + if (!ds->ops->port_mst_state_set) > + return -EOPNOTSUPP; > + > + err = ds->ops->port_mst_state_set(ds, dp->index, state); > + if (err) > + return err; > + > + if (dp->learning) { > + switch (state->state) { > + case BR_STATE_DISABLED: > + case BR_STATE_BLOCKING: > + case BR_STATE_LISTENING:Is there a requirement in br_mst_set_state() to put the switchdev notifier at the end instead of at the beginning? I'm tempted to ask you to introduce br_mst_get_state(), then assign old_state = br_mst_get_state(dsa_port_bridge_dev_get(dp), state->msti), then perform the VLAN fast age only on the appropriate state transitions, just like the regular fast age.> + err = dsa_port_msti_fast_age(dp, state->msti); > + break; > + } > + } > + > + return err; > +} > + > int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy) > { > struct dsa_switch *ds = dp->ds; > @@ -326,6 +386,8 @@ static bool dsa_port_supports_mst(struct dsa_port *dp) > struct dsa_switch *ds = dp->ds; > > return ds->ops->vlan_msti_set && > + ds->ops->port_mst_state_set && > + ds->ops->port_vlan_fast_age && > dsa_port_can_configure_learning(dp); > } > > diff --git a/net/dsa/slave.c b/net/dsa/slave.c > index 5e986cdeaae5..4300fc76f3af 100644 > --- a/net/dsa/slave.c > +++ b/net/dsa/slave.c > @@ -450,6 +450,12 @@ static int dsa_slave_port_attr_set(struct net_device *dev, const void *ctx, > > ret = dsa_port_set_state(dp, attr->u.stp_state, true); > break; > + case SWITCHDEV_ATTR_ID_PORT_MST_STATE: > + if (!dsa_port_offloads_bridge_port(dp, attr->orig_dev)) > + return -EOPNOTSUPP; > + > + ret = dsa_port_set_mst_state(dp, &attr->u.mst_state); > + break; > case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: > if (!dsa_port_offloads_bridge_dev(dp, attr->orig_dev)) > return -EOPNOTSUPP; > -- > 2.25.1 >