[v4,1/2] batman-adv: split batadv_is_wifi_iface() into two functions
Commit Message
Previously batadv_is_wifi_iface() did two things at once: looking up a
net_device from an interface index, and determining if it is a wifi device.
The second part is useful itself when the caller already has a net_device
reference.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
---
hard-interface.c | 73 +++++++++++++++++++++++++++++++-------------------------
1 file changed, 41 insertions(+), 32 deletions(-)
@@ -117,6 +117,47 @@ static int batadv_is_valid_iface(const struct net_device *net_dev)
return 1;
}
+/* This function returns true if the net device is a 802.11 wireless device */
+static bool batadv_is_wifi_net_device(struct net_device *net_device)
+{
+#ifdef CONFIG_WIRELESS_EXT
+ /* pre-cfg80211 drivers have to implement WEXT, so it is possible to
+ * check for wireless_handlers != NULL
+ */
+ if (net_device->wireless_handlers)
+ return true;
+#endif
+
+ /* cfg80211 drivers have to set ieee80211_ptr */
+ if (net_device->ieee80211_ptr)
+ return true;
+
+ return false;
+}
+
+/* This function returns true if the interface represented by ifindex is a
+ * 802.11 wireless device
+ */
+bool batadv_is_wifi_iface(int ifindex)
+{
+ struct net_device *net_device = NULL;
+ bool ret = false;
+
+ if (ifindex == BATADV_NULL_IFINDEX)
+ goto out;
+
+ net_device = dev_get_by_index(&init_net, ifindex);
+ if (!net_device)
+ goto out;
+
+ ret = batadv_is_wifi_net_device(net_device);
+
+out:
+ if (net_device)
+ dev_put(net_device);
+ return ret;
+}
+
static struct batadv_hard_iface *
batadv_hardif_get_active(const struct net_device *soft_iface)
{
@@ -631,38 +672,6 @@ out:
return NOTIFY_DONE;
}
-/* This function returns true if the interface represented by ifindex is a
- * 802.11 wireless device
- */
-bool batadv_is_wifi_iface(int ifindex)
-{
- struct net_device *net_device = NULL;
- bool ret = false;
-
- if (ifindex == BATADV_NULL_IFINDEX)
- goto out;
-
- net_device = dev_get_by_index(&init_net, ifindex);
- if (!net_device)
- goto out;
-
-#ifdef CONFIG_WIRELESS_EXT
- /* pre-cfg80211 drivers have to implement WEXT, so it is possible to
- * check for wireless_handlers != NULL
- */
- if (net_device->wireless_handlers)
- ret = true;
- else
-#endif
- /* cfg80211 drivers have to set ieee80211_ptr */
- if (net_device->ieee80211_ptr)
- ret = true;
-out:
- if (net_device)
- dev_put(net_device);
- return ret;
-}
-
struct notifier_block batadv_hard_if_notifier = {
.notifier_call = batadv_hard_if_event,
};