batman-adv: add infrastructure to change routing algorithm at runtime
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 71b56cf..7c87a34 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -32,11 +32,14 @@
#include "gateway_client.h"
#include "vis.h"
#include "hash.h"
+#include "bat_algo.h"
/* List manipulations on hardif_list have to be rtnl_lock()'ed,
* list traversals just rcu-locked */
struct list_head hardif_list;
+char bat_routing_algo[20] = "BATMAN IV";
+static struct hlist_head bat_algo_list;
unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
@@ -45,6 +48,9 @@
static int __init batman_init(void)
{
INIT_LIST_HEAD(&hardif_list);
+ INIT_HLIST_HEAD(&bat_algo_list);
+
+ bat_iv_init();
/* the name should not be longer than 10 chars - see
* http://lwn.net/Articles/23634/ */
@@ -172,6 +178,72 @@
return 0;
}
+static struct bat_algo_ops *bat_algo_get(char *name)
+{
+ struct bat_algo_ops *bat_algo_ops = NULL, *bat_algo_ops_tmp;
+ struct hlist_node *node;
+
+ hlist_for_each_entry(bat_algo_ops_tmp, node, &bat_algo_list, list) {
+ if (strcmp(bat_algo_ops_tmp->name, name) != 0)
+ continue;
+
+ bat_algo_ops = bat_algo_ops_tmp;
+ break;
+ }
+
+ return bat_algo_ops;
+}
+
+int bat_algo_register(struct bat_algo_ops *bat_algo_ops)
+{
+ struct bat_algo_ops *bat_algo_ops_tmp;
+ int ret = -1;
+
+ bat_algo_ops_tmp = bat_algo_get(bat_algo_ops->name);
+ if (bat_algo_ops_tmp) {
+ pr_info("Trying to register already registered routing "
+ "algorithm: %s\n", bat_algo_ops->name);
+ goto out;
+ }
+
+ INIT_HLIST_NODE(&bat_algo_ops->list);
+ hlist_add_head(&bat_algo_ops->list, &bat_algo_list);
+ ret = 0;
+
+out:
+ return ret;
+}
+
+int bat_algo_select(struct bat_priv *bat_priv, char *name)
+{
+ struct bat_algo_ops *bat_algo_ops;
+ int ret = -1;
+
+ bat_algo_ops = bat_algo_get(name);
+ if (!bat_algo_ops)
+ goto out;
+
+ bat_priv->bat_algo_ops = bat_algo_ops;
+ ret = 0;
+
+out:
+ return ret;
+}
+
+int bat_algo_seq_print_text(struct seq_file *seq, void *offset)
+{
+ struct bat_algo_ops *bat_algo_ops;
+ struct hlist_node *node;
+
+ seq_printf(seq, "Available routing algorithms:\n");
+
+ hlist_for_each_entry(bat_algo_ops, node, &bat_algo_list, list) {
+ seq_printf(seq, "%s\n", bat_algo_ops->name);
+ }
+
+ return 0;
+}
+
module_init(batman_init);
module_exit(batman_exit);