batman-adv: Avoid name based attaching of hard interfaces

The sysfs code for the batman-adv/mesh_iface file was receiving a string of
the batadv interface. This interface name was then provided to the code
which shared sysfs+rtnetlink code for attaching an hard-interface to an
batadv interface. The rtnetlink code was also using the (extracted)
interface name from the ndo_add_slave callback to increase the shared code
- even when it would have been more efficient to use the provided
net_device object directly instead of searching it again (based on its
name) in batadv_hardif_enable_interface.

But this indirect handling is no longer necessary because the sysfs code
was dropped. There is now only a single code path which is using
batadv_hardif_enable_interface.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 0c5b34251a6d..ae368a42a4ad 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -842,14 +842,13 @@ static int batadv_softif_slave_add(struct net_device *dev,
 				   struct netlink_ext_ack *extack)
 {
 	struct batadv_hard_iface *hard_iface;
-	struct net *net = dev_net(dev);
 	int ret = -EINVAL;
 
 	hard_iface = batadv_hardif_get_by_netdev(slave_dev);
 	if (!hard_iface || hard_iface->soft_iface)
 		goto out;
 
-	ret = batadv_hardif_enable_interface(hard_iface, net, dev->name);
+	ret = batadv_hardif_enable_interface(hard_iface, dev);
 
 out:
 	if (hard_iface)