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-rw-r--r--net/dsa/dsa2.c41
-rw-r--r--net/dsa/dsa_priv.h8
-rw-r--r--net/dsa/port.c62
-rw-r--r--net/dsa/slave.c4
-rw-r--r--net/dsa/switch.c8
-rw-r--r--net/dsa/tag_dsa.c4
6 files changed, 87 insertions, 40 deletions
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 4915abe0d4d2..030d5f26715a 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -72,27 +72,24 @@ int dsa_broadcast(unsigned long e, void *v)
}
/**
- * dsa_lag_map() - Map LAG netdev to a linear LAG ID
+ * dsa_lag_map() - Map LAG structure to a linear LAG array
* @dst: Tree in which to record the mapping.
- * @lag_dev: Netdev that is to be mapped to an ID.
+ * @lag: LAG structure that is to be mapped to the tree's array.
*
- * dsa_lag_id/dsa_lag_dev can then be used to translate between the
+ * dsa_lag_id/dsa_lag_by_id can then be used to translate between the
* two spaces. The size of the mapping space is determined by the
* driver by setting ds->num_lag_ids. It is perfectly legal to leave
* it unset if it is not needed, in which case these functions become
* no-ops.
*/
-void dsa_lag_map(struct dsa_switch_tree *dst, struct net_device *lag_dev)
+void dsa_lag_map(struct dsa_switch_tree *dst, struct dsa_lag *lag)
{
unsigned int id;
- if (dsa_lag_id(dst, lag_dev) > 0)
- /* Already mapped */
- return;
-
for (id = 1; id <= dst->lags_len; id++) {
- if (!dsa_lag_dev(dst, id)) {
- dst->lags[id - 1] = lag_dev;
+ if (!dsa_lag_by_id(dst, id)) {
+ dst->lags[id - 1] = lag;
+ lag->id = id;
return;
}
}
@@ -108,28 +105,36 @@ void dsa_lag_map(struct dsa_switch_tree *dst, struct net_device *lag_dev)
/**
* dsa_lag_unmap() - Remove a LAG ID mapping
* @dst: Tree in which the mapping is recorded.
- * @lag_dev: Netdev that was mapped.
+ * @lag: LAG structure that was mapped.
*
* As there may be multiple users of the mapping, it is only removed
* if there are no other references to it.
*/
-void dsa_lag_unmap(struct dsa_switch_tree *dst, struct net_device *lag_dev)
+void dsa_lag_unmap(struct dsa_switch_tree *dst, struct dsa_lag *lag)
{
- struct dsa_port *dp;
unsigned int id;
- dsa_lag_foreach_port(dp, dst, lag_dev)
- /* There are remaining users of this mapping */
- return;
-
dsa_lags_foreach_id(id, dst) {
- if (dsa_lag_dev(dst, id) == lag_dev) {
+ if (dsa_lag_by_id(dst, id) == lag) {
dst->lags[id - 1] = NULL;
+ lag->id = 0;
break;
}
}
}
+struct dsa_lag *dsa_tree_lag_find(struct dsa_switch_tree *dst,
+ const struct net_device *lag_dev)
+{
+ struct dsa_port *dp;
+
+ list_for_each_entry(dp, &dst->ports, list)
+ if (dsa_port_lag_dev_get(dp) == lag_dev)
+ return dp->lag;
+
+ return NULL;
+}
+
struct dsa_bridge *dsa_tree_bridge_find(struct dsa_switch_tree *dst,
const struct net_device *br)
{
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 0293a749b3ac..8612ff8ea7fe 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -76,7 +76,7 @@ struct dsa_notifier_mdb_info {
/* DSA_NOTIFIER_LAG_* */
struct dsa_notifier_lag_info {
- struct net_device *lag_dev;
+ struct dsa_lag lag;
int sw_index;
int port;
@@ -487,8 +487,10 @@ int dsa_switch_register_notifier(struct dsa_switch *ds);
void dsa_switch_unregister_notifier(struct dsa_switch *ds);
/* dsa2.c */
-void dsa_lag_map(struct dsa_switch_tree *dst, struct net_device *lag_dev);
-void dsa_lag_unmap(struct dsa_switch_tree *dst, struct net_device *lag_dev);
+void dsa_lag_map(struct dsa_switch_tree *dst, struct dsa_lag *lag);
+void dsa_lag_unmap(struct dsa_switch_tree *dst, struct dsa_lag *lag);
+struct dsa_lag *dsa_tree_lag_find(struct dsa_switch_tree *dst,
+ const struct net_device *lag_dev);
int dsa_tree_notify(struct dsa_switch_tree *dst, unsigned long e, void *v);
int dsa_broadcast(unsigned long e, void *v);
int dsa_tree_change_tag_proto(struct dsa_switch_tree *dst,
diff --git a/net/dsa/port.c b/net/dsa/port.c
index 0b42b3693e49..338467c1adbb 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -429,7 +429,7 @@ int dsa_port_lag_change(struct dsa_port *dp,
};
bool tx_enabled;
- if (!dp->lag_dev)
+ if (!dp->lag)
return 0;
/* On statically configured aggregates (e.g. loadbalance
@@ -447,6 +447,45 @@ int dsa_port_lag_change(struct dsa_port *dp,
return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info);
}
+static int dsa_port_lag_create(struct dsa_port *dp,
+ struct net_device *lag_dev)
+{
+ struct dsa_switch *ds = dp->ds;
+ struct dsa_lag *lag;
+
+ lag = dsa_tree_lag_find(ds->dst, lag_dev);
+ if (lag) {
+ refcount_inc(&lag->refcount);
+ dp->lag = lag;
+ return 0;
+ }
+
+ lag = kzalloc(sizeof(*lag), GFP_KERNEL);
+ if (!lag)
+ return -ENOMEM;
+
+ refcount_set(&lag->refcount, 1);
+ lag->dev = lag_dev;
+ dsa_lag_map(ds->dst, lag);
+ dp->lag = lag;
+
+ return 0;
+}
+
+static void dsa_port_lag_destroy(struct dsa_port *dp)
+{
+ struct dsa_lag *lag = dp->lag;
+
+ dp->lag = NULL;
+ dp->lag_tx_enabled = false;
+
+ if (!refcount_dec_and_test(&lag->refcount))
+ return;
+
+ dsa_lag_unmap(dp->ds->dst, lag);
+ kfree(lag);
+}
+
int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag_dev,
struct netdev_lag_upper_info *uinfo,
struct netlink_ext_ack *extack)
@@ -454,15 +493,16 @@ int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag_dev,
struct dsa_notifier_lag_info info = {
.sw_index = dp->ds->index,
.port = dp->index,
- .lag_dev = lag_dev,
.info = uinfo,
};
struct net_device *bridge_dev;
int err;
- dsa_lag_map(dp->ds->dst, lag_dev);
- dp->lag_dev = lag_dev;
+ err = dsa_port_lag_create(dp, lag_dev);
+ if (err)
+ goto err_lag_create;
+ info.lag = *dp->lag;
err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info);
if (err)
goto err_lag_join;
@@ -480,8 +520,8 @@ int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag_dev,
err_bridge_join:
dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
err_lag_join:
- dp->lag_dev = NULL;
- dsa_lag_unmap(dp->ds->dst, lag_dev);
+ dsa_port_lag_destroy(dp);
+err_lag_create:
return err;
}
@@ -499,11 +539,10 @@ void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag_dev)
struct dsa_notifier_lag_info info = {
.sw_index = dp->ds->index,
.port = dp->index,
- .lag_dev = lag_dev,
};
int err;
- if (!dp->lag_dev)
+ if (!dp->lag)
return;
/* Port might have been part of a LAG that in turn was
@@ -512,16 +551,15 @@ void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag_dev)
if (br)
dsa_port_bridge_leave(dp, br);
- dp->lag_tx_enabled = false;
- dp->lag_dev = NULL;
+ info.lag = *dp->lag;
+
+ dsa_port_lag_destroy(dp);
err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
if (err)
dev_err(dp->ds->dev,
"port %d failed to notify DSA_NOTIFIER_LAG_LEAVE: %pe\n",
dp->index, ERR_PTR(err));
-
- dsa_lag_unmap(dp->ds->dst, lag_dev);
}
/* Must be called under rcu_read_lock() */
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index f61e6b72ffbb..e31c7710fee9 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2134,7 +2134,7 @@ dsa_slave_lag_changeupper(struct net_device *dev,
continue;
dp = dsa_slave_to_port(lower);
- if (!dp->lag_dev)
+ if (!dp->lag)
/* Software LAG */
continue;
@@ -2163,7 +2163,7 @@ dsa_slave_lag_prechangeupper(struct net_device *dev,
continue;
dp = dsa_slave_to_port(lower);
- if (!dp->lag_dev)
+ if (!dp->lag)
/* Software LAG */
continue;
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index c71bade9269e..0bb3987bd4e6 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -468,12 +468,12 @@ static int dsa_switch_lag_join(struct dsa_switch *ds,
struct dsa_notifier_lag_info *info)
{
if (ds->index == info->sw_index && ds->ops->port_lag_join)
- return ds->ops->port_lag_join(ds, info->port, info->lag_dev,
+ return ds->ops->port_lag_join(ds, info->port, info->lag,
info->info);
if (ds->index != info->sw_index && ds->ops->crosschip_lag_join)
return ds->ops->crosschip_lag_join(ds, info->sw_index,
- info->port, info->lag_dev,
+ info->port, info->lag,
info->info);
return -EOPNOTSUPP;
@@ -483,11 +483,11 @@ static int dsa_switch_lag_leave(struct dsa_switch *ds,
struct dsa_notifier_lag_info *info)
{
if (ds->index == info->sw_index && ds->ops->port_lag_leave)
- return ds->ops->port_lag_leave(ds, info->port, info->lag_dev);
+ return ds->ops->port_lag_leave(ds, info->port, info->lag);
if (ds->index != info->sw_index && ds->ops->crosschip_lag_leave)
return ds->ops->crosschip_lag_leave(ds, info->sw_index,
- info->port, info->lag_dev);
+ info->port, info->lag);
return -EOPNOTSUPP;
}
diff --git a/net/dsa/tag_dsa.c b/net/dsa/tag_dsa.c
index 26435bc4a098..c8b4bbd46191 100644
--- a/net/dsa/tag_dsa.c
+++ b/net/dsa/tag_dsa.c
@@ -246,12 +246,14 @@ static struct sk_buff *dsa_rcv_ll(struct sk_buff *skb, struct net_device *dev,
if (trunk) {
struct dsa_port *cpu_dp = dev->dsa_ptr;
+ struct dsa_lag *lag;
/* The exact source port is not available in the tag,
* so we inject the frame directly on the upper
* team/bond.
*/
- skb->dev = dsa_lag_dev(cpu_dp->dst, source_port + 1);
+ lag = dsa_lag_by_id(cpu_dp->dst, source_port + 1);
+ skb->dev = lag ? lag->dev : NULL;
} else {
skb->dev = dsa_master_find_slave(dev, source_device,
source_port);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 07:33:35 +0000