[Intel-wired-lan] [PATCH iwl-next v6 11/12] ice: implement static version of ageing

[Wojciech Drewek <wojciech.drewek@intel.com>]

From: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>

Remove fdb entries always when ageing time expired.

Allow user to set ageing time using port object attribute.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
---
v2: use msecs_to_jiffies upon definition of
    ICE_ESW_BRIDGE_UPDATE_INTERVA
---
 .../net/ethernet/intel/ice/ice_eswitch_br.c   | 48 +++++++++++++++++++
 .../net/ethernet/intel/ice/ice_eswitch_br.h   | 10 ++++
 2 files changed, 58 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch_br.c b/drivers/net/ethernet/intel/ice/ice_eswitch_br.c
index 20355c633000..9ccd082f9ac4 100644
--- a/drivers/net/ethernet/intel/ice/ice_eswitch_br.c
+++ b/drivers/net/ethernet/intel/ice/ice_eswitch_br.c
@@ -8,6 +8,8 @@
 #include "ice_vlan.h"
 #include "ice_vf_vsi_vlan_ops.h"
 
+#define ICE_ESW_BRIDGE_UPDATE_INTERVAL msecs_to_jiffies(1000)
+
 static const struct rhashtable_params ice_fdb_ht_params = {
 	.key_offset = offsetof(struct ice_esw_br_fdb_entry, data),
 	.key_len = sizeof(struct ice_esw_br_fdb_data),
@@ -406,6 +408,7 @@ ice_eswitch_br_fdb_entry_create(struct net_device *netdev,
 	fdb_entry->br_port = br_port;
 	fdb_entry->flow = flow;
 	fdb_entry->dev = netdev;
+	fdb_entry->last_use = jiffies;
 	event = SWITCHDEV_FDB_ADD_TO_BRIDGE;
 
 	if (added_by_user) {
@@ -805,6 +808,10 @@ ice_eswitch_br_port_obj_attr_set(struct net_device *netdev, const void *ctx,
 		ice_eswitch_br_vlan_filtering_set(br_port->bridge,
 						  attr->u.vlan_filtering);
 		return 0;
+	case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
+		br_port->bridge->ageing_time =
+			clock_t_to_jiffies(attr->u.ageing_time);
+		return 0;
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -976,6 +983,7 @@ ice_eswitch_br_init(struct ice_esw_br_offloads *br_offloads, int ifindex)
 	INIT_LIST_HEAD(&bridge->fdb_list);
 	bridge->br_offloads = br_offloads;
 	bridge->ifindex = ifindex;
+	bridge->ageing_time = clock_t_to_jiffies(BR_DEFAULT_AGEING_TIME);
 	xa_init(&bridge->ports);
 	br_offloads->bridge = bridge;
 
@@ -1171,6 +1179,7 @@ ice_eswitch_br_offloads_deinit(struct ice_pf *pf)
 	if (!br_offloads)
 		return;
 
+	cancel_delayed_work_sync(&br_offloads->update_work);
 	unregister_netdevice_notifier(&br_offloads->netdev_nb);
 	unregister_switchdev_blocking_notifier(&br_offloads->switchdev_blk);
 	unregister_switchdev_notifier(&br_offloads->switchdev_nb);
@@ -1185,6 +1194,40 @@ ice_eswitch_br_offloads_deinit(struct ice_pf *pf)
 	rtnl_unlock();
 }
 
+static void ice_eswitch_br_update(struct ice_esw_br_offloads *br_offloads)
+{
+	struct ice_esw_br *bridge = br_offloads->bridge;
+	struct ice_esw_br_fdb_entry *entry, *tmp;
+
+	if (!bridge)
+		return;
+
+	rtnl_lock();
+	list_for_each_entry_safe(entry, tmp, &bridge->fdb_list, list) {
+		if (entry->flags & ICE_ESWITCH_BR_FDB_ADDED_BY_USER)
+			continue;
+
+		if (time_is_after_eq_jiffies(entry->last_use +
+					     bridge->ageing_time))
+			continue;
+
+		ice_eswitch_br_fdb_entry_notify_and_cleanup(bridge, entry);
+	}
+	rtnl_unlock();
+}
+
+static void ice_eswitch_br_update_work(struct work_struct *work)
+{
+	struct ice_esw_br_offloads *br_offloads;
+
+	br_offloads = ice_work_to_br_offloads(work);
+
+	ice_eswitch_br_update(br_offloads);
+
+	queue_delayed_work(br_offloads->wq, &br_offloads->update_work,
+			   ICE_ESW_BRIDGE_UPDATE_INTERVAL);
+}
+
 int
 ice_eswitch_br_offloads_init(struct ice_pf *pf)
 {
@@ -1233,6 +1276,11 @@ ice_eswitch_br_offloads_init(struct ice_pf *pf)
 		goto err_reg_netdev_nb;
 	}
 
+	INIT_DELAYED_WORK(&br_offloads->update_work,
+			  ice_eswitch_br_update_work);
+	queue_delayed_work(br_offloads->wq, &br_offloads->update_work,
+			   ICE_ESW_BRIDGE_UPDATE_INTERVAL);
+
 	return 0;
 
 err_reg_netdev_nb:
diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch_br.h b/drivers/net/ethernet/intel/ice/ice_eswitch_br.h
index 978e9ce8e277..85a8fadb2928 100644
--- a/drivers/net/ethernet/intel/ice/ice_eswitch_br.h
+++ b/drivers/net/ethernet/intel/ice/ice_eswitch_br.h
@@ -5,6 +5,7 @@
 #define _ICE_ESWITCH_BR_H_
 
 #include <linux/rhashtable.h>
+#include <linux/workqueue.h>
 
 struct ice_esw_br_fdb_data {
 	unsigned char addr[ETH_ALEN];
@@ -30,6 +31,8 @@ struct ice_esw_br_fdb_entry {
 	struct net_device *dev;
 	struct ice_esw_br_port *br_port;
 	struct ice_esw_br_flow *flow;
+
+	unsigned long last_use;
 };
 
 enum ice_esw_br_port_type {
@@ -59,6 +62,7 @@ struct ice_esw_br {
 
 	int ifindex;
 	u32 flags;
+	unsigned long ageing_time;
 };
 
 struct ice_esw_br_offloads {
@@ -69,6 +73,7 @@ struct ice_esw_br_offloads {
 	struct notifier_block switchdev_nb;
 
 	struct workqueue_struct *wq;
+	struct delayed_work update_work;
 };
 
 struct ice_esw_br_fdb_work {
@@ -88,6 +93,11 @@ struct ice_esw_br_vlan {
 		     struct ice_esw_br_offloads, \
 		     nb_name)
 
+#define ice_work_to_br_offloads(w) \
+	container_of(w, \
+		     struct ice_esw_br_offloads, \
+		     update_work.work)
+
 #define ice_work_to_fdb_work(w) \
 	container_of(w, \
 		     struct ice_esw_br_fdb_work, \
-- 
2.40.1

_______________________________________________
Intel-wired-lan mailing list
Intel-wired-lan@osuosl.org
https://lists.osuosl.org/mailman/listinfo/intel-wired-lan