batman-adv: refactor batadv_neigh_node_* functions to follow common style

Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index ce2f203..aa11296 100644 (file)
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -336,7 +336,8 @@ batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
 {
        struct batadv_neigh_node *neigh_node;
 
-       neigh_node = batadv_neigh_node_new(orig_node, hard_iface, neigh_addr);
+       neigh_node = batadv_neigh_node_get_or_create(orig_node,
+                                                    hard_iface, neigh_addr);
        if (!neigh_node)
                goto out;
 

diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c
index df42eb1..8909d1e 100644 (file)
--- a/net/batman-adv/bat_v_elp.c
+++ b/net/batman-adv/bat_v_elp.c
@@ -443,7 +443,8 @@ static void batadv_v_elp_neigh_update(struct batadv_priv *bat_priv,
        if (!orig_neigh)
                return;
 
-       neigh = batadv_neigh_node_new(orig_neigh, if_incoming, neigh_addr);
+       neigh = batadv_neigh_node_get_or_create(orig_neigh,
+                                               if_incoming, neigh_addr);
        if (!neigh)
                goto orig_free;
 

diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index 473ebb9..23ea9bf 100644 (file)
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -683,8 +683,8 @@ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset,
        if (!orig_node)
                return;
 
-       neigh_node = batadv_neigh_node_new(orig_node, if_incoming,
-                                          ethhdr->h_source);
+       neigh_node = batadv_neigh_node_get_or_create(orig_node, if_incoming,
+                                                    ethhdr->h_source);
        if (!neigh_node)
                goto out;
 

diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 7f51bc2..b0bad57 100644 (file)
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -602,19 +602,19 @@ batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
 }
 
 /**
- * batadv_neigh_node_new - create and init a new neigh_node object
+ * batadv_neigh_node_create - create a neigh node object
  * @orig_node: originator object representing the neighbour
  * @hard_iface: the interface where the neighbour is connected to
  * @neigh_addr: the mac address of the neighbour interface
  *
  * Allocates a new neigh_node object and initialises all the generic fields.
  *
- * Return: neighbor when found. Othwerwise NULL
+ * Return: the neighbour node if found or created or NULL otherwise.
  */
-struct batadv_neigh_node *
-batadv_neigh_node_new(struct batadv_orig_node *orig_node,
-                     struct batadv_hard_iface *hard_iface,
-                     const u8 *neigh_addr)
+static struct batadv_neigh_node *
+batadv_neigh_node_create(struct batadv_orig_node *orig_node,
+                        struct batadv_hard_iface *hard_iface,
+                        const u8 *neigh_addr)
 {
        struct batadv_neigh_node *neigh_node;
        struct batadv_hardif_neigh_node *hardif_neigh = NULL;
@@ -667,6 +667,29 @@ out:
 }
 
 /**
+ * batadv_neigh_node_get_or_create - retrieve or create a neigh node object
+ * @orig_node: originator object representing the neighbour
+ * @hard_iface: the interface where the neighbour is connected to
+ * @neigh_addr: the mac address of the neighbour interface
+ *
+ * Return: the neighbour node if found or created or NULL otherwise.
+ */
+struct batadv_neigh_node *
+batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
+                               struct batadv_hard_iface *hard_iface,
+                               const u8 *neigh_addr)
+{
+       struct batadv_neigh_node *neigh_node = NULL;
+
+       /* first check without locking to avoid the overhead */
+       neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr);
+       if (neigh_node)
+               return neigh_node;
+
+       return batadv_neigh_node_create(orig_node, hard_iface, neigh_addr);
+}
+
+/**
  * batadv_hardif_neigh_seq_print_text - print the single hop neighbour list
  * @seq: neighbour table seq_file struct
  * @offset: not used

diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
index 64a8951..566306b 100644 (file)
--- a/net/batman-adv/originator.h
+++ b/net/batman-adv/originator.h
@@ -46,9 +46,9 @@ batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
 void
 batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh);
 struct batadv_neigh_node *
-batadv_neigh_node_new(struct batadv_orig_node *orig_node,
-                     struct batadv_hard_iface *hard_iface,
-                     const u8 *neigh_addr);
+batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
+                               struct batadv_hard_iface *hard_iface,
+                               const u8 *neigh_addr);
 void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node);
 struct batadv_neigh_node *
 batadv_orig_router_get(struct batadv_orig_node *orig_node,