From: Marek Lindner <mareklind...@neomailbox.ch>
Signed-off-by: Marek Lindner <mareklind...@neomailbox.ch>
Signed-off-by: Sven Eckelmann <s...@narfation.org>
Signed-off-by: Simon Wunderlich <s...@simonwunderlich.de>
---
net/batman-adv/bat_iv_ogm.c | 3 ++-
net/batman-adv/bat_v_elp.c | 3 ++-
net/batman-adv/bat_v_ogm.c | 4 ++--
net/batman-adv/originator.c | 35 +++++++++++++++++++++++++++++------
net/batman-adv/originator.h | 6 +++---
5 files changed, 38 insertions(+), 13 deletions(-)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index ce2f203..aa11296 100644
--- 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
--- 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
--- 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
--- 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
--- 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,
--
2.8.1
