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-rw-r--r--include/net/dsa.h10
-rw-r--r--net/dsa/dsa2.c2
-rw-r--r--net/dsa/dsa_priv.h7
-rw-r--r--net/dsa/port.c42
-rw-r--r--net/dsa/slave.c97
-rw-r--r--net/dsa/switch.c187
6 files changed, 298 insertions, 47 deletions
diff --git a/include/net/dsa.h b/include/net/dsa.h
index fd1f62a6e0a8..85cb9aed4c51 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -312,6 +312,10 @@ struct dsa_port {
struct mutex addr_lists_lock;
struct list_head fdbs;
struct list_head mdbs;
+
+ /* List of VLANs that CPU and DSA ports are members of. */
+ struct mutex vlans_lock;
+ struct list_head vlans;
};
/* TODO: ideally DSA ports would have a single dp->link_dp member,
@@ -332,6 +336,12 @@ struct dsa_mac_addr {
struct list_head list;
};
+struct dsa_vlan {
+ u16 vid;
+ refcount_t refcount;
+ struct list_head list;
+};
+
struct dsa_switch {
struct device *dev;
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index e498c927c3d0..1df8c2356463 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -453,8 +453,10 @@ static int dsa_port_setup(struct dsa_port *dp)
return 0;
mutex_init(&dp->addr_lists_lock);
+ mutex_init(&dp->vlans_lock);
INIT_LIST_HEAD(&dp->fdbs);
INIT_LIST_HEAD(&dp->mdbs);
+ INIT_LIST_HEAD(&dp->vlans);
if (ds->ops->port_setup) {
err = ds->ops->port_setup(ds, dp->index);
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 2bbfa9efe9f8..6a3878157b0a 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -34,6 +34,8 @@ enum {
DSA_NOTIFIER_HOST_MDB_DEL,
DSA_NOTIFIER_VLAN_ADD,
DSA_NOTIFIER_VLAN_DEL,
+ DSA_NOTIFIER_HOST_VLAN_ADD,
+ DSA_NOTIFIER_HOST_VLAN_DEL,
DSA_NOTIFIER_MTU,
DSA_NOTIFIER_TAG_PROTO,
DSA_NOTIFIER_TAG_PROTO_CONNECT,
@@ -234,6 +236,11 @@ int dsa_port_vlan_add(struct dsa_port *dp,
struct netlink_ext_ack *extack);
int dsa_port_vlan_del(struct dsa_port *dp,
const struct switchdev_obj_port_vlan *vlan);
+int dsa_port_host_vlan_add(struct dsa_port *dp,
+ const struct switchdev_obj_port_vlan *vlan,
+ struct netlink_ext_ack *extack);
+int dsa_port_host_vlan_del(struct dsa_port *dp,
+ const struct switchdev_obj_port_vlan *vlan);
int dsa_port_mrp_add(const struct dsa_port *dp,
const struct switchdev_obj_mrp *mrp);
int dsa_port_mrp_del(const struct dsa_port *dp,
diff --git a/net/dsa/port.c b/net/dsa/port.c
index bd78192e0e47..cca5cf686f74 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -904,6 +904,48 @@ int dsa_port_vlan_del(struct dsa_port *dp,
return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
}
+int dsa_port_host_vlan_add(struct dsa_port *dp,
+ const struct switchdev_obj_port_vlan *vlan,
+ struct netlink_ext_ack *extack)
+{
+ struct dsa_notifier_vlan_info info = {
+ .sw_index = dp->ds->index,
+ .port = dp->index,
+ .vlan = vlan,
+ .extack = extack,
+ };
+ struct dsa_port *cpu_dp = dp->cpu_dp;
+ int err;
+
+ err = dsa_port_notify(dp, DSA_NOTIFIER_HOST_VLAN_ADD, &info);
+ if (err && err != -EOPNOTSUPP)
+ return err;
+
+ vlan_vid_add(cpu_dp->master, htons(ETH_P_8021Q), vlan->vid);
+
+ return err;
+}
+
+int dsa_port_host_vlan_del(struct dsa_port *dp,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ struct dsa_notifier_vlan_info info = {
+ .sw_index = dp->ds->index,
+ .port = dp->index,
+ .vlan = vlan,
+ };
+ struct dsa_port *cpu_dp = dp->cpu_dp;
+ int err;
+
+ err = dsa_port_notify(dp, DSA_NOTIFIER_HOST_VLAN_DEL, &info);
+ if (err && err != -EOPNOTSUPP)
+ return err;
+
+ vlan_vid_del(cpu_dp->master, htons(ETH_P_8021Q), vlan->vid);
+
+ return err;
+}
+
int dsa_port_mrp_add(const struct dsa_port *dp,
const struct switchdev_obj_mrp *mrp)
{
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 2f6caf5d037e..734c381f89ca 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -348,9 +348,8 @@ static int dsa_slave_vlan_add(struct net_device *dev,
const struct switchdev_obj *obj,
struct netlink_ext_ack *extack)
{
- struct net_device *master = dsa_slave_to_master(dev);
struct dsa_port *dp = dsa_slave_to_port(dev);
- struct switchdev_obj_port_vlan vlan;
+ struct switchdev_obj_port_vlan *vlan;
int err;
if (dsa_port_skip_vlan_configuration(dp)) {
@@ -358,14 +357,14 @@ static int dsa_slave_vlan_add(struct net_device *dev,
return 0;
}
- vlan = *SWITCHDEV_OBJ_PORT_VLAN(obj);
+ vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
/* Deny adding a bridge VLAN when there is already an 802.1Q upper with
* the same VID.
*/
if (br_vlan_enabled(dsa_port_bridge_dev_get(dp))) {
rcu_read_lock();
- err = dsa_slave_vlan_check_for_8021q_uppers(dev, &vlan);
+ err = dsa_slave_vlan_check_for_8021q_uppers(dev, vlan);
rcu_read_unlock();
if (err) {
NL_SET_ERR_MSG_MOD(extack,
@@ -374,21 +373,29 @@ static int dsa_slave_vlan_add(struct net_device *dev,
}
}
- err = dsa_port_vlan_add(dp, &vlan, extack);
- if (err)
- return err;
+ return dsa_port_vlan_add(dp, vlan, extack);
+}
- /* We need the dedicated CPU port to be a member of the VLAN as well.
- * Even though drivers often handle CPU membership in special ways,
+static int dsa_slave_host_vlan_add(struct net_device *dev,
+ const struct switchdev_obj *obj,
+ struct netlink_ext_ack *extack)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+ struct switchdev_obj_port_vlan vlan;
+
+ if (dsa_port_skip_vlan_configuration(dp)) {
+ NL_SET_ERR_MSG_MOD(extack, "skipping configuration of VLAN");
+ return 0;
+ }
+
+ vlan = *SWITCHDEV_OBJ_PORT_VLAN(obj);
+
+ /* Even though drivers often handle CPU membership in special ways,
* it doesn't make sense to program a PVID, so clear this flag.
*/
vlan.flags &= ~BRIDGE_VLAN_INFO_PVID;
- err = dsa_port_vlan_add(dp->cpu_dp, &vlan, extack);
- if (err)
- return err;
-
- return vlan_vid_add(master, htons(ETH_P_8021Q), vlan.vid);
+ return dsa_port_host_vlan_add(dp, &vlan, extack);
}
static int dsa_slave_port_obj_add(struct net_device *dev, const void *ctx,
@@ -415,10 +422,17 @@ static int dsa_slave_port_obj_add(struct net_device *dev, const void *ctx,
err = dsa_port_host_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
break;
case SWITCHDEV_OBJ_ID_PORT_VLAN:
- if (!dsa_port_offloads_bridge_port(dp, obj->orig_dev))
- return -EOPNOTSUPP;
+ if (netif_is_bridge_master(obj->orig_dev)) {
+ if (!dsa_port_offloads_bridge_dev(dp, obj->orig_dev))
+ return -EOPNOTSUPP;
+
+ err = dsa_slave_host_vlan_add(dev, obj, extack);
+ } else {
+ if (!dsa_port_offloads_bridge_port(dp, obj->orig_dev))
+ return -EOPNOTSUPP;
- err = dsa_slave_vlan_add(dev, obj, extack);
+ err = dsa_slave_vlan_add(dev, obj, extack);
+ }
break;
case SWITCHDEV_OBJ_ID_MRP:
if (!dsa_port_offloads_bridge_dev(dp, obj->orig_dev))
@@ -444,26 +458,29 @@ static int dsa_slave_port_obj_add(struct net_device *dev, const void *ctx,
static int dsa_slave_vlan_del(struct net_device *dev,
const struct switchdev_obj *obj)
{
- struct net_device *master = dsa_slave_to_master(dev);
struct dsa_port *dp = dsa_slave_to_port(dev);
struct switchdev_obj_port_vlan *vlan;
- int err;
if (dsa_port_skip_vlan_configuration(dp))
return 0;
vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
- /* Do not deprogram the CPU port as it may be shared with other user
- * ports which can be members of this VLAN as well.
- */
- err = dsa_port_vlan_del(dp, vlan);
- if (err)
- return err;
+ return dsa_port_vlan_del(dp, vlan);
+}
- vlan_vid_del(master, htons(ETH_P_8021Q), vlan->vid);
+static int dsa_slave_host_vlan_del(struct net_device *dev,
+ const struct switchdev_obj *obj)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+ struct switchdev_obj_port_vlan *vlan;
- return 0;
+ if (dsa_port_skip_vlan_configuration(dp))
+ return 0;
+
+ vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
+
+ return dsa_port_host_vlan_del(dp, vlan);
}
static int dsa_slave_port_obj_del(struct net_device *dev, const void *ctx,
@@ -489,10 +506,17 @@ static int dsa_slave_port_obj_del(struct net_device *dev, const void *ctx,
err = dsa_port_host_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
break;
case SWITCHDEV_OBJ_ID_PORT_VLAN:
- if (!dsa_port_offloads_bridge_port(dp, obj->orig_dev))
- return -EOPNOTSUPP;
+ if (netif_is_bridge_master(obj->orig_dev)) {
+ if (!dsa_port_offloads_bridge_dev(dp, obj->orig_dev))
+ return -EOPNOTSUPP;
- err = dsa_slave_vlan_del(dev, obj);
+ err = dsa_slave_host_vlan_del(dev, obj);
+ } else {
+ if (!dsa_port_offloads_bridge_port(dp, obj->orig_dev))
+ return -EOPNOTSUPP;
+
+ err = dsa_slave_vlan_del(dev, obj);
+ }
break;
case SWITCHDEV_OBJ_ID_MRP:
if (!dsa_port_offloads_bridge_dev(dp, obj->orig_dev))
@@ -1347,7 +1371,6 @@ static int dsa_slave_get_ts_info(struct net_device *dev,
static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
u16 vid)
{
- struct net_device *master = dsa_slave_to_master(dev);
struct dsa_port *dp = dsa_slave_to_port(dev);
struct switchdev_obj_port_vlan vlan = {
.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
@@ -1367,7 +1390,7 @@ static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
}
/* And CPU port... */
- ret = dsa_port_vlan_add(dp->cpu_dp, &vlan, &extack);
+ ret = dsa_port_host_vlan_add(dp, &vlan, &extack);
if (ret) {
if (extack._msg)
netdev_err(dev, "CPU port %d: %s\n", dp->cpu_dp->index,
@@ -1375,13 +1398,12 @@ static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
return ret;
}
- return vlan_vid_add(master, proto, vid);
+ return 0;
}
static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
u16 vid)
{
- struct net_device *master = dsa_slave_to_master(dev);
struct dsa_port *dp = dsa_slave_to_port(dev);
struct switchdev_obj_port_vlan vlan = {
.vid = vid,
@@ -1390,16 +1412,11 @@ static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
};
int err;
- /* Do not deprogram the CPU port as it may be shared with other user
- * ports which can be members of this VLAN as well.
- */
err = dsa_port_vlan_del(dp, &vlan);
if (err)
return err;
- vlan_vid_del(master, proto, vid);
-
- return 0;
+ return dsa_port_host_vlan_del(dp, &vlan);
}
static int dsa_slave_restore_vlan(struct net_device *vdev, int vid, void *arg)
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index 4866b58649e4..0bb3987bd4e6 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -558,6 +558,7 @@ static int dsa_switch_host_mdb_del(struct dsa_switch *ds,
return err;
}
+/* Port VLANs match on the targeted port and on all DSA ports */
static bool dsa_port_vlan_match(struct dsa_port *dp,
struct dsa_notifier_vlan_info *info)
{
@@ -570,6 +571,126 @@ static bool dsa_port_vlan_match(struct dsa_port *dp,
return false;
}
+/* Host VLANs match on the targeted port's CPU port, and on all DSA ports
+ * (upstream and downstream) of that switch and its upstream switches.
+ */
+static bool dsa_port_host_vlan_match(struct dsa_port *dp,
+ struct dsa_notifier_vlan_info *info)
+{
+ struct dsa_port *targeted_dp, *cpu_dp;
+ struct dsa_switch *targeted_ds;
+
+ targeted_ds = dsa_switch_find(dp->ds->dst->index, info->sw_index);
+ targeted_dp = dsa_to_port(targeted_ds, info->port);
+ cpu_dp = targeted_dp->cpu_dp;
+
+ if (dsa_switch_is_upstream_of(dp->ds, targeted_ds))
+ return dsa_port_is_dsa(dp) || dp == cpu_dp;
+
+ return false;
+}
+
+static struct dsa_vlan *dsa_vlan_find(struct list_head *vlan_list,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ struct dsa_vlan *v;
+
+ list_for_each_entry(v, vlan_list, list)
+ if (v->vid == vlan->vid)
+ return v;
+
+ return NULL;
+}
+
+static int dsa_port_do_vlan_add(struct dsa_port *dp,
+ const struct switchdev_obj_port_vlan *vlan,
+ struct netlink_ext_ack *extack)
+{
+ struct dsa_switch *ds = dp->ds;
+ int port = dp->index;
+ struct dsa_vlan *v;
+ int err = 0;
+
+ /* No need to bother with refcounting for user ports. */
+ if (!(dsa_port_is_cpu(dp) || dsa_port_is_dsa(dp)))
+ return ds->ops->port_vlan_add(ds, port, vlan, extack);
+
+ /* No need to propagate on shared ports the existing VLANs that were
+ * re-notified after just the flags have changed. This would cause a
+ * refcount bump which we need to avoid, since it unbalances the
+ * additions with the deletions.
+ */
+ if (vlan->changed)
+ return 0;
+
+ mutex_lock(&dp->vlans_lock);
+
+ v = dsa_vlan_find(&dp->vlans, vlan);
+ if (v) {
+ refcount_inc(&v->refcount);
+ goto out;
+ }
+
+ v = kzalloc(sizeof(*v), GFP_KERNEL);
+ if (!v) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = ds->ops->port_vlan_add(ds, port, vlan, extack);
+ if (err) {
+ kfree(v);
+ goto out;
+ }
+
+ v->vid = vlan->vid;
+ refcount_set(&v->refcount, 1);
+ list_add_tail(&v->list, &dp->vlans);
+
+out:
+ mutex_unlock(&dp->vlans_lock);
+
+ return err;
+}
+
+static int dsa_port_do_vlan_del(struct dsa_port *dp,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ struct dsa_switch *ds = dp->ds;
+ int port = dp->index;
+ struct dsa_vlan *v;
+ int err = 0;
+
+ /* No need to bother with refcounting for user ports */
+ if (!(dsa_port_is_cpu(dp) || dsa_port_is_dsa(dp)))
+ return ds->ops->port_vlan_del(ds, port, vlan);
+
+ mutex_lock(&dp->vlans_lock);
+
+ v = dsa_vlan_find(&dp->vlans, vlan);
+ if (!v) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ if (!refcount_dec_and_test(&v->refcount))
+ goto out;
+
+ err = ds->ops->port_vlan_del(ds, port, vlan);
+ if (err) {
+ refcount_set(&v->refcount, 1);
+ goto out;
+ }
+
+ list_del(&v->list);
+ kfree(v);
+
+out:
+ mutex_unlock(&dp->vlans_lock);
+
+ return err;
+}
+
static int dsa_switch_vlan_add(struct dsa_switch *ds,
struct dsa_notifier_vlan_info *info)
{
@@ -581,8 +702,8 @@ static int dsa_switch_vlan_add(struct dsa_switch *ds,
dsa_switch_for_each_port(dp, ds) {
if (dsa_port_vlan_match(dp, info)) {
- err = ds->ops->port_vlan_add(ds, dp->index, info->vlan,
- info->extack);
+ err = dsa_port_do_vlan_add(dp, info->vlan,
+ info->extack);
if (err)
return err;
}
@@ -594,15 +715,61 @@ static int dsa_switch_vlan_add(struct dsa_switch *ds,
static int dsa_switch_vlan_del(struct dsa_switch *ds,
struct dsa_notifier_vlan_info *info)
{
+ struct dsa_port *dp;
+ int err;
+
if (!ds->ops->port_vlan_del)
return -EOPNOTSUPP;
- if (ds->index == info->sw_index)
- return ds->ops->port_vlan_del(ds, info->port, info->vlan);
+ dsa_switch_for_each_port(dp, ds) {
+ if (dsa_port_vlan_match(dp, info)) {
+ err = dsa_port_do_vlan_del(dp, info->vlan);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int dsa_switch_host_vlan_add(struct dsa_switch *ds,
+ struct dsa_notifier_vlan_info *info)
+{
+ struct dsa_port *dp;
+ int err;
+
+ if (!ds->ops->port_vlan_add)
+ return -EOPNOTSUPP;
+
+ dsa_switch_for_each_port(dp, ds) {
+ if (dsa_port_host_vlan_match(dp, info)) {
+ err = dsa_port_do_vlan_add(dp, info->vlan,
+ info->extack);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int dsa_switch_host_vlan_del(struct dsa_switch *ds,
+ struct dsa_notifier_vlan_info *info)
+{
+ struct dsa_port *dp;
+ int err;
+
+ if (!ds->ops->port_vlan_del)
+ return -EOPNOTSUPP;
+
+ dsa_switch_for_each_port(dp, ds) {
+ if (dsa_port_host_vlan_match(dp, info)) {
+ err = dsa_port_do_vlan_del(dp, info->vlan);
+ if (err)
+ return err;
+ }
+ }
- /* Do not deprogram the DSA links as they may be used as conduit
- * for other VLAN members in the fabric.
- */
return 0;
}
@@ -764,6 +931,12 @@ static int dsa_switch_event(struct notifier_block *nb,
case DSA_NOTIFIER_VLAN_DEL:
err = dsa_switch_vlan_del(ds, info);
break;
+ case DSA_NOTIFIER_HOST_VLAN_ADD:
+ err = dsa_switch_host_vlan_add(ds, info);
+ break;
+ case DSA_NOTIFIER_HOST_VLAN_DEL:
+ err = dsa_switch_host_vlan_del(ds, info);
+ break;
case DSA_NOTIFIER_MTU:
err = dsa_switch_mtu(ds, info);
break;
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-26 13:16:26 +0300