batman-adv: Add const type qualifier for pointers

batman-adv uses pointers which are marked as const and should not
violate that type qualifier by passing it to functions which force a
cast to the non-const version.

Signed-off-by: Sven Eckelmann <sven@narfation.org>

1 files changed, 10 insertions, 9 deletions

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index dfbfccc9fe4..915e12b820b 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -46,7 +46,7 @@ void hardif_free_rcu(struct rcu_head *rcu)
         kfree(hard_iface);
 }
 
-struct hard_iface *hardif_get_by_netdev(struct net_device *net_dev)
+struct hard_iface *hardif_get_by_netdev(const struct net_device *net_dev)
 {
         struct hard_iface *hard_iface;
 
@@ -64,7 +64,7 @@ out:
         return hard_iface;
 }
 
-static int is_valid_iface(struct net_device *net_dev)
+static int is_valid_iface(const struct net_device *net_dev)
 {
         if (net_dev->flags & IFF_LOOPBACK)
                 return 0;
@@ -86,7 +86,7 @@ static int is_valid_iface(struct net_device *net_dev)
         return 1;
 }
 
-static struct hard_iface *hardif_get_active(struct net_device *soft_iface)
+static struct hard_iface *hardif_get_active(const struct net_device *soft_iface)
 {
         struct hard_iface *hard_iface;
 
@@ -160,7 +160,7 @@ static void primary_if_select(struct bat_priv *bat_priv,
         atomic_set(&bat_priv->tt_local_changed, 1);
 }
 
-static bool hardif_is_iface_up(struct hard_iface *hard_iface)
+static bool hardif_is_iface_up(const struct hard_iface *hard_iface)
 {
         if (hard_iface->net_dev->flags & IFF_UP)
                 return true;
@@ -176,9 +176,9 @@ static void update_mac_addresses(struct hard_iface *hard_iface)
                hard_iface->net_dev->dev_addr, ETH_ALEN);
 }
 
-static void check_known_mac_addr(struct net_device *net_dev)
+static void check_known_mac_addr(const struct net_device *net_dev)
 {
-        struct hard_iface *hard_iface;
+        const struct hard_iface *hard_iface;
 
         rcu_read_lock();
         list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
@@ -204,8 +204,8 @@ static void check_known_mac_addr(struct net_device *net_dev)
 
 int hardif_min_mtu(struct net_device *soft_iface)
 {
-        struct bat_priv *bat_priv = netdev_priv(soft_iface);
-        struct hard_iface *hard_iface;
+        const struct bat_priv *bat_priv = netdev_priv(soft_iface);
+        const struct hard_iface *hard_iface;
         /* allow big frames if all devices are capable to do so
          * (have MTU > 1500 + BAT_HEADER_LEN) */
         int min_mtu = ETH_DATA_LEN;
@@ -285,7 +285,8 @@ static void hardif_deactivate_interface(struct hard_iface *hard_iface)
         update_min_mtu(hard_iface->soft_iface);
 }
 
-int hardif_enable_interface(struct hard_iface *hard_iface, char *iface_name)
+int hardif_enable_interface(struct hard_iface *hard_iface,
+                            const char *iface_name)
 {
         struct bat_priv *bat_priv;
         struct batman_packet *batman_packet;