batman-adv: Prefix gateway-client non-static functions with batadv_

batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>

10 files changed, 51 insertions, 46 deletions

diff --git a/net/batman-adv/bat_debugfs.c b/net/batman-adv/bat_debugfs.c
index 71b225c1b5ca..7b294b431f88 100644
--- a/net/batman-adv/bat_debugfs.c
+++ b/net/batman-adv/bat_debugfs.c
@@ -236,7 +236,7 @@ static int originators_open(struct inode *inode, struct file *file)
 static int gateways_open(struct inode *inode, struct file *file)
 {
         struct net_device *net_dev = (struct net_device *)inode->i_private;
-        return single_open(file, gw_client_seq_print_text, net_dev);
+        return single_open(file, batadv_gw_client_seq_print_text, net_dev);
 }
 
 static int transtable_global_open(struct inode *inode, struct file *file)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 53bce95e5f33..defcac1184c4 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -729,8 +729,8 @@ update_tt:
                                ntohs(batman_ogm_packet->tt_crc));
 
         if (orig_node->gw_flags != batman_ogm_packet->gw_flags)
-                gw_node_update(bat_priv, orig_node,
-                               batman_ogm_packet->gw_flags);
+                batadv_gw_node_update(bat_priv, orig_node,
+                                      batman_ogm_packet->gw_flags);
 
         orig_node->gw_flags = batman_ogm_packet->gw_flags;
 
@@ -738,7 +738,7 @@ update_tt:
         if ((orig_node->gw_flags) &&
             (atomic_read(&bat_priv->gw_mode) == GW_MODE_CLIENT) &&
             (atomic_read(&bat_priv->gw_sel_class) > 2))
-                gw_check_election(bat_priv, orig_node);
+                batadv_gw_check_election(bat_priv, orig_node);
 
         goto out;
 
diff --git a/net/batman-adv/bat_sysfs.c b/net/batman-adv/bat_sysfs.c
index 5dce1abc35d4..31d23dbccc38 100644
--- a/net/batman-adv/bat_sysfs.c
+++ b/net/batman-adv/bat_sysfs.c
@@ -326,7 +326,7 @@ static ssize_t show_bat_algo(struct kobject *kobj, struct attribute *attr,
 static void post_gw_deselect(struct net_device *net_dev)
 {
         struct bat_priv *bat_priv = netdev_priv(net_dev);
-        gw_deselect(bat_priv);
+        batadv_gw_deselect(bat_priv);
 }
 
 static ssize_t show_gw_mode(struct kobject *kobj, struct attribute *attr,
@@ -397,7 +397,7 @@ static ssize_t store_gw_mode(struct kobject *kobj, struct attribute *attr,
         bat_info(net_dev, "Changing gw mode from: %s to: %s\n",
                  curr_gw_mode_str, buff);
 
-        gw_deselect(bat_priv);
+        batadv_gw_deselect(bat_priv);
         atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp);
         return count;
 }
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 1d7f08e026f3..a28d9ce86812 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -60,7 +60,7 @@ out:
         return gw_node;
 }
 
-struct orig_node *gw_get_selected_orig(struct bat_priv *bat_priv)
+struct orig_node *batadv_gw_get_selected_orig(struct bat_priv *bat_priv)
 {
         struct gw_node *gw_node;
         struct orig_node *orig_node = NULL;
@@ -103,7 +103,7 @@ static void gw_select(struct bat_priv *bat_priv, struct gw_node *new_gw_node)
         spin_unlock_bh(&bat_priv->gw_list_lock);
 }
 
-void gw_deselect(struct bat_priv *bat_priv)
+void batadv_gw_deselect(struct bat_priv *bat_priv)
 {
         atomic_set(&bat_priv->gw_reselect, 1);
 }
@@ -182,7 +182,7 @@ next:
         return curr_gw;
 }
 
-void gw_election(struct bat_priv *bat_priv)
+void batadv_gw_election(struct bat_priv *bat_priv)
 {
         struct gw_node *curr_gw = NULL, *next_gw = NULL;
         struct neigh_node *router = NULL;
@@ -212,7 +212,7 @@ void gw_election(struct bat_priv *bat_priv)
 
                 router = orig_node_get_router(next_gw->orig_node);
                 if (!router) {
-                        gw_deselect(bat_priv);
+                        batadv_gw_deselect(bat_priv);
                         goto out;
                 }
         }
@@ -246,13 +246,14 @@ out:
                 neigh_node_free_ref(router);
 }
 
-void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node)
+void batadv_gw_check_election(struct bat_priv *bat_priv,
+                              struct orig_node *orig_node)
 {
         struct orig_node *curr_gw_orig;
         struct neigh_node *router_gw = NULL, *router_orig = NULL;
         uint8_t gw_tq_avg, orig_tq_avg;
 
-        curr_gw_orig = gw_get_selected_orig(bat_priv);
+        curr_gw_orig = batadv_gw_get_selected_orig(bat_priv);
         if (!curr_gw_orig)
                 goto deselect;
 
@@ -288,7 +289,7 @@ void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node)
                 gw_tq_avg, orig_tq_avg);
 
 deselect:
-        gw_deselect(bat_priv);
+        batadv_gw_deselect(bat_priv);
 out:
         if (curr_gw_orig)
                 orig_node_free_ref(curr_gw_orig);
@@ -328,8 +329,8 @@ static void gw_node_add(struct bat_priv *bat_priv,
                 (up > 2048 ? "MBit" : "KBit"));
 }
 
-void gw_node_update(struct bat_priv *bat_priv,
-                    struct orig_node *orig_node, uint8_t new_gwflags)
+void batadv_gw_node_update(struct bat_priv *bat_priv,
+                           struct orig_node *orig_node, uint8_t new_gwflags)
 {
         struct hlist_node *node;
         struct gw_node *gw_node, *curr_gw;
@@ -374,7 +375,7 @@ void gw_node_update(struct bat_priv *bat_priv,
         goto unlock;
 
 deselect:
-        gw_deselect(bat_priv);
+        batadv_gw_deselect(bat_priv);
 unlock:
         rcu_read_unlock();
 
@@ -382,12 +383,13 @@ unlock:
                 gw_node_free_ref(curr_gw);
 }
 
-void gw_node_delete(struct bat_priv *bat_priv, struct orig_node *orig_node)
+void batadv_gw_node_delete(struct bat_priv *bat_priv,
+                           struct orig_node *orig_node)
 {
-        gw_node_update(bat_priv, orig_node, 0);
+        batadv_gw_node_update(bat_priv, orig_node, 0);
 }
 
-void gw_node_purge(struct bat_priv *bat_priv)
+void batadv_gw_node_purge(struct bat_priv *bat_priv)
 {
         struct gw_node *gw_node, *curr_gw;
         struct hlist_node *node, *node_tmp;
@@ -416,7 +418,7 @@ void gw_node_purge(struct bat_priv *bat_priv)
 
         /* gw_deselect() needs to acquire the gw_list_lock */
         if (do_deselect)
-                gw_deselect(bat_priv);
+                batadv_gw_deselect(bat_priv);
 
         if (curr_gw)
                 gw_node_free_ref(curr_gw);
@@ -458,7 +460,7 @@ out:
         return ret;
 }
 
-int gw_client_seq_print_text(struct seq_file *seq, void *offset)
+int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset)
 {
         struct net_device *net_dev = (struct net_device *)seq->private;
         struct bat_priv *bat_priv = netdev_priv(net_dev);
@@ -568,7 +570,7 @@ out:
         return ret;
 }
 
-bool gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len)
+bool batadv_gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len)
 {
         struct ethhdr *ethhdr;
         struct iphdr *iphdr;
@@ -634,8 +636,8 @@ bool gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len)
         return true;
 }
 
-bool gw_out_of_range(struct bat_priv *bat_priv,
-                     struct sk_buff *skb, struct ethhdr *ethhdr)
+bool batadv_gw_out_of_range(struct bat_priv *bat_priv,
+                            struct sk_buff *skb, struct ethhdr *ethhdr)
 {
         struct neigh_node *neigh_curr = NULL, *neigh_old = NULL;
         struct orig_node *orig_dst_node = NULL;
@@ -644,7 +646,7 @@ bool gw_out_of_range(struct bat_priv *bat_priv,
         unsigned int header_len = 0;
         uint8_t curr_tq_avg;
 
-        ret = gw_is_dhcp_target(skb, &header_len);
+        ret = batadv_gw_is_dhcp_target(skb, &header_len);
         if (!ret)
                 goto out;
 
diff --git a/net/batman-adv/gateway_client.h b/net/batman-adv/gateway_client.h
index bf56a5aea10b..2c2446f3f124 100644
--- a/net/batman-adv/gateway_client.h
+++ b/net/batman-adv/gateway_client.h
@@ -22,17 +22,19 @@
 #ifndef _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
 #define _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
 
-void gw_deselect(struct bat_priv *bat_priv);
-void gw_election(struct bat_priv *bat_priv);
-struct orig_node *gw_get_selected_orig(struct bat_priv *bat_priv);
-void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node);
-void gw_node_update(struct bat_priv *bat_priv,
-                    struct orig_node *orig_node, uint8_t new_gwflags);
-void gw_node_delete(struct bat_priv *bat_priv, struct orig_node *orig_node);
-void gw_node_purge(struct bat_priv *bat_priv);
-int gw_client_seq_print_text(struct seq_file *seq, void *offset);
-bool gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len);
-bool gw_out_of_range(struct bat_priv *bat_priv,
-                     struct sk_buff *skb, struct ethhdr *ethhdr);
+void batadv_gw_deselect(struct bat_priv *bat_priv);
+void batadv_gw_election(struct bat_priv *bat_priv);
+struct orig_node *batadv_gw_get_selected_orig(struct bat_priv *bat_priv);
+void batadv_gw_check_election(struct bat_priv *bat_priv,
+                              struct orig_node *orig_node);
+void batadv_gw_node_update(struct bat_priv *bat_priv,
+                           struct orig_node *orig_node, uint8_t new_gwflags);
+void batadv_gw_node_delete(struct bat_priv *bat_priv,
+                           struct orig_node *orig_node);
+void batadv_gw_node_purge(struct bat_priv *bat_priv);
+int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset);
+bool batadv_gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len);
+bool batadv_gw_out_of_range(struct bat_priv *bat_priv,
+                            struct sk_buff *skb, struct ethhdr *ethhdr);
 
 #endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */
diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c
index 6e3b052b935d..a0b0f52d961a 100644
--- a/net/batman-adv/gateway_common.c
+++ b/net/batman-adv/gateway_common.c
@@ -165,7 +165,7 @@ ssize_t gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count)
         if (atomic_read(&bat_priv->gw_bandwidth) == gw_bandwidth_tmp)
                 return count;
 
-        gw_deselect(bat_priv);
+        batadv_gw_deselect(bat_priv);
         bat_info(net_dev,
                  "Changing gateway bandwidth from: '%i' to: '%ld' (propagating: %d%s/%d%s)\n",
                  atomic_read(&bat_priv->gw_bandwidth), gw_bandwidth_tmp,
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 3e1bb7a1f8b4..8fe70b487b49 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -149,7 +149,7 @@ void mesh_free(struct net_device *soft_iface)
 
         vis_quit(bat_priv);
 
-        gw_node_purge(bat_priv);
+        batadv_gw_node_purge(bat_priv);
         originator_free(bat_priv);
 
         tt_free(bat_priv);
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index cf83c5422e9a..2f921bff84a9 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -361,7 +361,8 @@ static void _purge_orig(struct bat_priv *bat_priv)
                                           head, hash_entry) {
                         if (purge_orig_node(bat_priv, orig_node)) {
                                 if (orig_node->gw_flags)
-                                        gw_node_delete(bat_priv, orig_node);
+                                        batadv_gw_node_delete(bat_priv,
+                                                              orig_node);
                                 hlist_del_rcu(node);
                                 orig_node_free_ref(orig_node);
                                 continue;
@@ -374,8 +375,8 @@ static void _purge_orig(struct bat_priv *bat_priv)
                 spin_unlock_bh(list_lock);
         }
 
-        gw_node_purge(bat_priv);
-        gw_election(bat_priv);
+        batadv_gw_node_purge(bat_priv);
+        batadv_gw_election(bat_priv);
 }
 
 static void purge_orig(struct work_struct *work)
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 16e866ad1759..bfc4fe03cafa 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -181,14 +181,14 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
                 case GW_MODE_SERVER:
                         /* gateway servers should not send dhcp
                          * requests into the mesh */
-                        ret = gw_is_dhcp_target(skb, &header_len);
+                        ret = batadv_gw_is_dhcp_target(skb, &header_len);
                         if (ret)
                                 goto dropped;
                         break;
                 case GW_MODE_CLIENT:
                         /* gateway clients should send dhcp requests
                          * via unicast to their gateway */
-                        ret = gw_is_dhcp_target(skb, &header_len);
+                        ret = batadv_gw_is_dhcp_target(skb, &header_len);
                         if (ret)
                                 do_bcast = false;
                         break;
@@ -232,7 +232,7 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
         /* unicast packet */
         } else {
                 if (atomic_read(&bat_priv->gw_mode) != GW_MODE_OFF) {
-                        ret = gw_out_of_range(bat_priv, skb, ethhdr);
+                        ret = batadv_gw_out_of_range(bat_priv, skb, ethhdr);
                         if (ret)
                                 goto dropped;
                 }
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
index 74175c210858..92d3ea3e6ce4 100644
--- a/net/batman-adv/unicast.c
+++ b/net/batman-adv/unicast.c
@@ -294,7 +294,7 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv)
 
         /* get routing information */
         if (is_multicast_ether_addr(ethhdr->h_dest)) {
-                orig_node = gw_get_selected_orig(bat_priv);
+                orig_node = batadv_gw_get_selected_orig(bat_priv);
                 if (orig_node)
                         goto find_router;
         }