net/hsr: Move to per-hsr device prune timer.

Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: Arvid Brodin

net/hsr/hsr_device.c

@@ -429,7 +429,8 @@ static void hsr_dev_destroy(struct net_device *hsr_dev)
 
 	hsr = netdev_priv(hsr_dev);
 
-	del_timer(&hsr->announce_timer);
+	del_timer_sync(&hsr->prune_timer);
+	del_timer_sync(&hsr->announce_timer);
 	unregister_hsr_master(hsr);    /* calls list_del_rcu on hsr */
 	restore_slaves(hsr_dev);
 	call_rcu(&hsr->rcu_head, reclaim_hsr_dev);   /* reclaim hsr */
@@ -523,6 +524,10 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
 	hsr->announce_timer.function = hsr_announce;
 	hsr->announce_timer.data = (unsigned long) hsr;
 
+	init_timer(&hsr->prune_timer);
+	hsr->prune_timer.function = hsr_prune_nodes;
+	hsr->prune_timer.data = (unsigned long) hsr;
+
 	ether_addr_copy(hsr->sup_multicast_addr, def_multicast_addr);
 	hsr->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;
 
@@ -596,6 +601,9 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
 	if (res)
 		goto fail;
 
+	hsr->prune_timer.expires = jiffies + msecs_to_jiffies(PRUNE_PERIOD);
+	add_timer(&hsr->prune_timer);
+
 	register_hsr_master(hsr);
 
 	return 0;

net/hsr/hsr_framereg.c

@@ -366,12 +366,15 @@ static bool is_late(struct hsr_node *node, enum hsr_dev_idx dev_idx)
 /* Remove stale sequence_nr records. Called by timer every
  * HSR_LIFE_CHECK_INTERVAL (two seconds or so).
  */
-void hsr_prune_nodes(struct hsr_priv *hsr)
+void hsr_prune_nodes(unsigned long data)
 {
+	struct hsr_priv *hsr;
 	struct hsr_node *node;
 	unsigned long timestamp;
 	unsigned long time_a, time_b;
 
+	hsr = (struct hsr_priv *) data;
+
 	rcu_read_lock();
 	list_for_each_entry_rcu(node, &hsr->node_db, mac_list) {
 		/* Shorthand */

net/hsr/hsr_framereg.h

@@ -32,7 +32,7 @@ void hsr_register_frame_in(struct hsr_node *node, enum hsr_dev_idx dev_idx);
 int hsr_register_frame_out(struct hsr_node *node, enum hsr_dev_idx dev_idx,
 			   struct sk_buff *skb);
 
-void hsr_prune_nodes(struct hsr_priv *hsr);
+void hsr_prune_nodes(unsigned long data);
 
 int hsr_create_self_node(struct list_head *self_node_db,
 			 unsigned char addr_a[ETH_ALEN],

net/hsr/hsr_main.c

@@ -175,22 +175,6 @@ static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,
 }
 
 
-static struct timer_list prune_timer;
-
-static void prune_nodes_all(unsigned long data)
-{
-	struct hsr_priv *hsr;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(hsr, &hsr_list, hsr_list)
-		hsr_prune_nodes(hsr);
-	rcu_read_unlock();
-
-	prune_timer.expires = jiffies + msecs_to_jiffies(PRUNE_PERIOD);
-	add_timer(&prune_timer);
-}
-
-
 static struct notifier_block hsr_nb = {
 	.notifier_call = hsr_netdev_notify,	/* Slave event notifications */
 };
@@ -202,14 +186,7 @@ static int __init hsr_init(void)
 
 	BUILD_BUG_ON(sizeof(struct hsr_tag) != HSR_HLEN);
 
-	init_timer(&prune_timer);
-	prune_timer.function = prune_nodes_all;
-	prune_timer.data = 0;
-	prune_timer.expires = jiffies + msecs_to_jiffies(PRUNE_PERIOD);
-	add_timer(&prune_timer);
-
 	register_netdevice_notifier(&hsr_nb);
-
 	res = hsr_netlink_init();
 
 	return res;
@@ -218,7 +195,6 @@ static int __init hsr_init(void)
 static void __exit hsr_exit(void)
 {
 	unregister_netdevice_notifier(&hsr_nb);
-	del_timer_sync(&prune_timer);
 	hsr_netlink_exit();
 }
 

net/hsr/hsr_main.h

@@ -153,6 +153,7 @@ struct hsr_priv {
 	struct list_head	node_db;	/* Other HSR nodes */
 	struct list_head	self_node_db;	/* MACs of slaves */
 	struct timer_list	announce_timer;	/* Supervision frame dispatch */
+	struct timer_list	prune_timer;
 	int announce_count;
 	u16 sequence_nr;
 	spinlock_t seqnr_lock;			/* locking for sequence_nr */