netdev - [PATCH net 2/3] 6lowpan: clean up fragments list if module unloaded

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Date:	Thu, 26 Apr 2012 13:24:57 +0400
From:	Alexander Smirnov <alex.bluesman.smirnov@...il.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, linux-zigbee-devel@...ts.sourceforge.net,
	Alexander Smirnov <alex.bluesman.smirnov@...il.com>
Subject: [PATCH net 2/3] 6lowpan: clean up fragments list if module unloaded

Clean all the pending fragments and relative timers if 6lowpan link
is going to be deleted.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@...il.com>
---
 net/ieee802154/6lowpan.c |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index 7ce508f..a21ca6e 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -1177,11 +1177,20 @@ static void lowpan_dellink(struct net_device *dev, struct list_head *head)
 {
 	struct lowpan_dev_info *lowpan_dev = lowpan_dev_info(dev);
 	struct net_device *real_dev = lowpan_dev->real_dev;
-	struct lowpan_dev_record *entry;
-	struct lowpan_dev_record *tmp;
+	struct lowpan_dev_record *entry, *tmp;
+	struct lowpan_fragment *frame, *tframe;
 
 	ASSERT_RTNL();
 
+	spin_lock(&flist_lock);
+	list_for_each_entry_safe(frame, tframe, &lowpan_fragments, list) {
+		del_timer(&frame->timer);
+		list_del(&frame->list);
+		dev_kfree_skb(frame->skb);
+		kfree(frame);
+	}
+	spin_unlock(&flist_lock);
+
 	mutex_lock(&lowpan_dev_info(dev)->dev_list_mtx);
 	list_for_each_entry_safe(entry, tmp, &lowpan_devices, list) {
 		if (entry->ldev == dev) {
-- 
1.7.2.3

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