batman-adv: suppress false warning when changing the mac address
Commit Message
Whenever the mac address of an batman interface is changed
check_known_mac_addr() is called to print a warning if the newly added
mac address exists an another batman interface. While looping through
the batman interface list check_known_mac_addr() only compares mac
addresses and does not make sure they belong to different interfaces,
thus always printing a warning.
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
batman-adv/hard-interface.c | 15 ++++++++++-----
1 files changed, 10 insertions(+), 5 deletions(-)
Comments
On Wednesday 03 November 2010 15:41:35 Marek Lindner wrote:
> Whenever the mac address of an batman interface is changed
> check_known_mac_addr() is called to print a warning if the newly added
> mac address exists an another batman interface. While looping through
> the batman interface list check_known_mac_addr() only compares mac
> addresses and does not make sure they belong to different interfaces,
> thus always printing a warning.
Applied in revision 1857.
Regards,
Marek
@@ -175,7 +175,7 @@ static void update_mac_addresses(struct batman_if *batman_if)
batman_if->net_dev->dev_addr, ETH_ALEN);
}
-static void check_known_mac_addr(uint8_t *addr)
+static void check_known_mac_addr(struct net_device *net_dev)
{
struct batman_if *batman_if;
@@ -185,11 +185,16 @@ static void check_known_mac_addr(uint8_t *addr)
(batman_if->if_status != IF_TO_BE_ACTIVATED))
continue;
- if (!compare_orig(batman_if->net_dev->dev_addr, addr))
+ if (batman_if->net_dev == net_dev)
+ continue;
+
+ if (!compare_orig(batman_if->net_dev->dev_addr,
+ net_dev->dev_addr))
continue;
pr_warning("The newly added mac address (%pM) already exists "
- "on: %s\n", addr, batman_if->net_dev->name);
+ "on: %s\n", net_dev->dev_addr,
+ batman_if->net_dev->name);
pr_warning("It is strongly recommended to keep mac addresses "
"unique to avoid problems!\n");
}
@@ -439,7 +444,7 @@ static struct batman_if *hardif_add_interface(struct net_device *net_dev)
INIT_LIST_HEAD(&batman_if->list);
kref_init(&batman_if->refcount);
- check_known_mac_addr(batman_if->net_dev->dev_addr);
+ check_known_mac_addr(batman_if->net_dev);
spin_lock(&if_list_lock);
list_add_tail_rcu(&batman_if->list, &if_list);
@@ -520,7 +525,7 @@ static int hard_if_event(struct notifier_block *this,
if (batman_if->if_status == IF_NOT_IN_USE)
goto hardif_put;
- check_known_mac_addr(batman_if->net_dev->dev_addr);
+ check_known_mac_addr(batman_if->net_dev);
update_mac_addresses(batman_if);
bat_priv = netdev_priv(batman_if->soft_iface);